Gantry
Steel crane boom system is transmitted to the rotating platform to load the main components, can be made into single boom boom system or combination of systems.
Arm rack system: single boom luffing system is divided into rigid and flexible cable transmission amplitude of the arm frame. The former is characterized by the boom arm of the entire boom system is only rigid parts, as with weight balance system and a rigid arm drive means, which are arranged close to the luffing jib pull the root point, relying on the screw, screw drive achieve pitching arm. The second boom boom without balancing device luffing jib rope fixed on the head, relying on the income and the flexible cable release to achieve jib luffing.
Combination boom system: four-link portal
overhead gantry crane boom system is modular crane jib a typical pattern, it avoids some of the shortcomings arm frame body, so a combination boom system is widely used. And this combined with flexible arm can be divided into rigid cable type and cable type two.
1, the flexible cable type. It is the use of wire rope for the rod, and with the rear trunk frame geometry shape of the curve must achieve a level luffing movement of goods in the process. The whole structure lighter weight, but there are less rigid structure, rear rack and trunk cable connections easy to wear and other shortcomings. Previously in the small gantry
jib crane lifting weight greater use in recent years has gradually been rigid rod replaced jib combinations.
2, the rigid rod combination arm. Rigid rod jib combination is determined by the trunk frame, rigid rod and hinge arm three part through the combination and makes up four-bar linkage with the rack in order to achieve a level luffing cargo movement process.
bridge gantry crane
2013年8月30日星期五
Cranes rising limit position limiter
Up limit position limiter is lifting one important safety device. When hoisting motion, the spreader in working height range. At the maximum working position, the spreader with the top of the supporting mechanism (such as a frame or a small
bridge crane, etc.) should have a certain distance. The specific size of this space, the driver is more difficult to master at work, coupled with inevitable negligence in work. Therefore, if the installation does not increase the limit position limiter or limiters failure, work, may occur to the upper supporting structure spreader top, and rising operation of the drive system lifting spreader situation continues,hoist crane resulting in wire breakage, and to spreader fall accidents.
Adopt and maintain its upper limiter work effectively to prevent similar incidents from happening, so "crane safety regulations" in the states: all power-driven crane, its lifting mechanism (including main and auxiliary hoisting mechanism), should be installation rising limit position limiter.
Up limit position limiter basic principle is the separation of a drive by the lifting motion action to trigger an electrical switch, resulting in increased transmission system to stop working,overhead bridge crane and thus play a protective role. The common form of hammer and screw two.
Adopt and maintain its upper limiter work effectively to prevent similar incidents from happening, so "crane safety regulations" in the states: all power-driven crane, its lifting mechanism (including main and auxiliary hoisting mechanism), should be installation rising limit position limiter.
Up limit position limiter basic principle is the separation of a drive by the lifting motion action to trigger an electrical switch, resulting in increased transmission system to stop working,overhead bridge crane and thus play a protective role. The common form of hammer and screw two.
Common Crane Anti-tilting device
Performed with a flexible wire rope luffing
jib crane , when faced with handling such situations , it will produce the boom backward force . Resulting boom exceeds the minimum amplitude backward crane accident occurred . Therefore, this type of crane installation Anti-tilting devices. Boom backward mainly caused by the following types :
1 , with the lifting slings, rigging or hoisting wire rope defects in the process of lifting a sudden rupture ; makes heavy fall ; or because rigger help hang properly, the process of lifting heavy objects scattered . These conditions can form suddenly unloaded , causing the boom bounce backward accidents.
2, due to failure of lifting height limiter , over winding farm accidents , resulting in wire breakage ; or directly on the boom is generated traction , resulting boom after dumping incidents.
3 , luffing mechanism out of control , while luffing limit switch failure , resulting in a luffing jib backward during an accident .
4, due to hurricane impact in the process of lifting crane backward causing accidents.
In order to prevent similar accidents in the country crane safety regulations in the clear requirements of mobile gantry crane and tower cranes moving wall should be installed on Anti-tilting device ( except hydraulic luffing crane ) .
Currently used anti- tilt device after most had two parts. First, by installing the hinge point on the jib luffing limit switches near luffing position . Sometimes boom driven via a linkage indicator amplitude and amplitude disc set position switch for limit . Then through a mechanical stopper means for the crane . Insurance rope and bumper are two commonly used anti- reclining device . Good safety rope has been calculated using the length and strength of the rope , one end fixed on the turntable , and the other end fixed to the jib , through the rope length , defining the inclination of the crane .
The Anti-tilting device shortcomings can not play the role of cushioning and shock absorption , shock and vibration bigger. To mitigate vibration and shock often used bumpers . The working principle of the bumper , the bumper is hinged at the upper end of the boom ,bridge gantry crane the lower end pivotally attached to the turntable ; bumper is a telescopic mechanism , with the bow and the tilt telescopic jib ; in the buffer spring is installed in the sleeve the boom a buffer , shock absorption and limit the role . Bumper also used hydraulic oil and gas combined way, this way of shock absorption, cushioning properties better than spring .
1 , with the lifting slings, rigging or hoisting wire rope defects in the process of lifting a sudden rupture ; makes heavy fall ; or because rigger help hang properly, the process of lifting heavy objects scattered . These conditions can form suddenly unloaded , causing the boom bounce backward accidents.
2, due to failure of lifting height limiter , over winding farm accidents , resulting in wire breakage ; or directly on the boom is generated traction , resulting boom after dumping incidents.
3 , luffing mechanism out of control , while luffing limit switch failure , resulting in a luffing jib backward during an accident .
4, due to hurricane impact in the process of lifting crane backward causing accidents.
In order to prevent similar accidents in the country crane safety regulations in the clear requirements of mobile gantry crane and tower cranes moving wall should be installed on Anti-tilting device ( except hydraulic luffing crane ) .
Currently used anti- tilt device after most had two parts. First, by installing the hinge point on the jib luffing limit switches near luffing position . Sometimes boom driven via a linkage indicator amplitude and amplitude disc set position switch for limit . Then through a mechanical stopper means for the crane . Insurance rope and bumper are two commonly used anti- reclining device . Good safety rope has been calculated using the length and strength of the rope , one end fixed on the turntable , and the other end fixed to the jib , through the rope length , defining the inclination of the crane .
The Anti-tilting device shortcomings can not play the role of cushioning and shock absorption , shock and vibration bigger. To mitigate vibration and shock often used bumpers . The working principle of the bumper , the bumper is hinged at the upper end of the boom ,bridge gantry crane the lower end pivotally attached to the turntable ; bumper is a telescopic mechanism , with the bow and the tilt telescopic jib ; in the buffer spring is installed in the sleeve the boom a buffer , shock absorption and limit the role . Bumper also used hydraulic oil and gas combined way, this way of shock absorption, cushioning properties better than spring .
2013年8月29日星期四
The next three years , or show a downward trend in the international shipbuilding industry
Since 2011 , China's shipbuilding industry suffered a widespread "winter" , the shipbuilding industry is not optimistic the three indicators ,overhead gantry crane shipbuilding capacity growth is slowing, new orders up sharply , orderbook also accelerated decline.
For imports of marine equipment in large quantities, batch and more, and most of it comes to handling characteristics of the business and the current CCC shipbuilding industry problems , inspection and quarantine departments recommend shipbuilding enterprises to take timely measures to deal with the following :
Recognize the direction of development , adjusting the industrial structure, conditions permitting , homogeneous small shipbuilding enterprises should carry out strategic alliances , complementary advantages , the formation mechanism of competition unanimously , increase bargaining power.
Improve the technical level , and enhance the capability of independent innovation . Increase LNG carriers ,eot crane large marine equipment, high value-added production capacity, improve the overall competitiveness of shipbuilding industry , from cost advantages and product advantages to technical changes .
Emphasis on international shipbuilding new codes, standards affecting the shipbuilding industry . Carefully combined saving and energy-saving requirements to develop new ship, to avoid falling into the trap of technical barriers .
Strengthen production management , improve production efficiency. Avoid the manufacturing cycle , product quality problems led to difficulties in delivery of the ship . At the same time , strengthen the production and meticulous management , to take to improve labor productivity, promote technological progress , reduce procurement costs, improve utilization of steel , reducing energy consumption and other measures to improve profitability .
Do everything possible to ensure delivery of the ship , go all orders . Highly concerned about the container ship , LNG ships, multipurpose vessels , special vessels and marine engineering equipment and other areas of market opportunities.
Strengthen cooperation between banks and explore new financing. Vigorously carry out the ship financial leasing companies, the use of funds to establish shipbuilding industrial chain financing model .
It should be noted that the next three years will show a downward trend in the international shipbuilding industry is expected to pick up gradually until after 2015 , which is Forced Chinese shipbuilding industry to achieve leapfrog development opportunities. On the one hand , despite the downturn in the market for bulk carriers and oil tankers ,bridge gantry crane but the high value-added ships , energy-saving ships, marine engineering equipment orders have not been affected , but there was a substantial upgrade ; hand, new ship also means the end of peak demand the peak of the upcoming ship repair , shipbuilding industry will be the future has tremendous business opportunities , with the advantages of the port to implement shipbuilding industry cluster development , but also the development of domestic and international shipping industry, a successful model . Domestic shipbuilding enterprises should take timely measures to deal with the crisis in the industry , to seize the opportunities which bears , changing industrial structure, enhance the technical level, to achieve " shipbuilding power," the goal.
For imports of marine equipment in large quantities, batch and more, and most of it comes to handling characteristics of the business and the current CCC shipbuilding industry problems , inspection and quarantine departments recommend shipbuilding enterprises to take timely measures to deal with the following :
Recognize the direction of development , adjusting the industrial structure, conditions permitting , homogeneous small shipbuilding enterprises should carry out strategic alliances , complementary advantages , the formation mechanism of competition unanimously , increase bargaining power.
Improve the technical level , and enhance the capability of independent innovation . Increase LNG carriers ,eot crane large marine equipment, high value-added production capacity, improve the overall competitiveness of shipbuilding industry , from cost advantages and product advantages to technical changes .
Emphasis on international shipbuilding new codes, standards affecting the shipbuilding industry . Carefully combined saving and energy-saving requirements to develop new ship, to avoid falling into the trap of technical barriers .
Strengthen production management , improve production efficiency. Avoid the manufacturing cycle , product quality problems led to difficulties in delivery of the ship . At the same time , strengthen the production and meticulous management , to take to improve labor productivity, promote technological progress , reduce procurement costs, improve utilization of steel , reducing energy consumption and other measures to improve profitability .
Do everything possible to ensure delivery of the ship , go all orders . Highly concerned about the container ship , LNG ships, multipurpose vessels , special vessels and marine engineering equipment and other areas of market opportunities.
Strengthen cooperation between banks and explore new financing. Vigorously carry out the ship financial leasing companies, the use of funds to establish shipbuilding industrial chain financing model .
It should be noted that the next three years will show a downward trend in the international shipbuilding industry is expected to pick up gradually until after 2015 , which is Forced Chinese shipbuilding industry to achieve leapfrog development opportunities. On the one hand , despite the downturn in the market for bulk carriers and oil tankers ,bridge gantry crane but the high value-added ships , energy-saving ships, marine engineering equipment orders have not been affected , but there was a substantial upgrade ; hand, new ship also means the end of peak demand the peak of the upcoming ship repair , shipbuilding industry will be the future has tremendous business opportunities , with the advantages of the port to implement shipbuilding industry cluster development , but also the development of domestic and international shipping industry, a successful model . Domestic shipbuilding enterprises should take timely measures to deal with the crisis in the industry , to seize the opportunities which bears , changing industrial structure, enhance the technical level, to achieve " shipbuilding power," the goal.
2013 China Industrial Automation Equipment Development Trend Analysis
With the deepening of social information , key industries critical task will increasingly rely on industrial machines,gantry crane and to IPC -based low-cost industrial control automation are becoming mainstream , local industrial machine manufacturers and the attention degree increasingly high. With electric power, metallurgy , petrochemical, environmental protection, transportation , construction and other industries developed rapidly, from a digital set-top boxes for home use , digital TV, to the bank teller , highway toll collection system , gas station management , manufacturing production line control , finance, government , defense and other industries increasing demand for information technology , a large demand for IPC , IPC market prospect is very broad.
First, the development trend analysis
( 1 ) specialized
DCS is more suitable for the respective fields of application ,bridge gantry crane it is necessary to further understand the professional technology and application requirements, such as nuclear power plants in order to gradually form this S, change drill DGS, glass and cement DCS DCS and other .
( 2 ) to an integrated direction
Because standardized data communication lines and communication networks, the various single ( multi ) loop controller , PLC, industrial ratio , NC and other industrial equipment constitutes a large system to meet the requirements of factory automation , and adapt to the trend of opening .
( 3 ) to the intelligent direction
Because database systems, reasoning functions such as development, particularly in knowledge-based systems (KBS) and expert system (ES) applications, such as self-learning control , remote diagnostics and look for Excellence , artificial intelligence will be implemented at all levels in the DCS . And FF Fieldbus similar to microprocessor-based smart devices, such as intelligent I / O intelligent PID control, intelligent sensors, transmitters , actuators , intelligent human interfaces and programmable regulator has emerged.
( 4 ) Industrial PC technology
Since S Gong became a big part of this trend , PC as the DCS operator station or node machine has been very common . PC-PLC, PC-S, 19, Pc-Nc so is Pc-Dcs pioneer .
Two , IPC Market Distribution
At present, the T- controlling machine supply channels mainly from China Taiwan and the mainland manufacturers, foreign products after years of market grappling , due to high costs , high prices, service difficult , is now completely out of the domestic market. At present, the domestic IT industry, research and development, processing technology to constantly improve ; kinds of chips and a variety of devices , cattle production :hoist gantry crane did not prepare an equal footing in the international market is basically optional ; software resources portability can save a lot of manpower and material resources. In these favorable conditions, some domestic manufacturers seize the opportunity to rise rapidly , the use of local competitive advantages in foreign brands will gradually squeeze the domestic labor market. Some businesses more than 100% per year growth rate of assets , utmost in the domestic industrial market, and has successfully entered the international labor market.
Industrial sector 's products and technology is very special , are intermediate products for other industries to provide reliable , embedded , intelligent industrial computer . With the deepening of social information , key industries critical task will increasingly rely on industrial machines, and to IPC -based low-cost industrial control automation are becoming mainstream , local industrial machine manufacturers and the attention degree increasingly high. With electric power, metallurgy , petrochemical, environmental protection, transportation , construction and other industries developed rapidly, from a digital set-top boxes for home use , digital TV,Steel crane to the bank teller , highway toll collection system , gas station management , manufacturing production line control , finance, government , defense and other industries increasing demand for information technology , a large demand for IPC , IPC market prospect is very broad.
First, the development trend analysis
( 1 ) specialized
DCS is more suitable for the respective fields of application ,bridge gantry crane it is necessary to further understand the professional technology and application requirements, such as nuclear power plants in order to gradually form this S, change drill DGS, glass and cement DCS DCS and other .
( 2 ) to an integrated direction
Because standardized data communication lines and communication networks, the various single ( multi ) loop controller , PLC, industrial ratio , NC and other industrial equipment constitutes a large system to meet the requirements of factory automation , and adapt to the trend of opening .
( 3 ) to the intelligent direction
Because database systems, reasoning functions such as development, particularly in knowledge-based systems (KBS) and expert system (ES) applications, such as self-learning control , remote diagnostics and look for Excellence , artificial intelligence will be implemented at all levels in the DCS . And FF Fieldbus similar to microprocessor-based smart devices, such as intelligent I / O intelligent PID control, intelligent sensors, transmitters , actuators , intelligent human interfaces and programmable regulator has emerged.
( 4 ) Industrial PC technology
Since S Gong became a big part of this trend , PC as the DCS operator station or node machine has been very common . PC-PLC, PC-S, 19, Pc-Nc so is Pc-Dcs pioneer .
Two , IPC Market Distribution
At present, the T- controlling machine supply channels mainly from China Taiwan and the mainland manufacturers, foreign products after years of market grappling , due to high costs , high prices, service difficult , is now completely out of the domestic market. At present, the domestic IT industry, research and development, processing technology to constantly improve ; kinds of chips and a variety of devices , cattle production :hoist gantry crane did not prepare an equal footing in the international market is basically optional ; software resources portability can save a lot of manpower and material resources. In these favorable conditions, some domestic manufacturers seize the opportunity to rise rapidly , the use of local competitive advantages in foreign brands will gradually squeeze the domestic labor market. Some businesses more than 100% per year growth rate of assets , utmost in the domestic industrial market, and has successfully entered the international labor market.
Industrial sector 's products and technology is very special , are intermediate products for other industries to provide reliable , embedded , intelligent industrial computer . With the deepening of social information , key industries critical task will increasingly rely on industrial machines, and to IPC -based low-cost industrial control automation are becoming mainstream , local industrial machine manufacturers and the attention degree increasingly high. With electric power, metallurgy , petrochemical, environmental protection, transportation , construction and other industries developed rapidly, from a digital set-top boxes for home use , digital TV,Steel crane to the bank teller , highway toll collection system , gas station management , manufacturing production line control , finance, government , defense and other industries increasing demand for information technology , a large demand for IPC , IPC market prospect is very broad.
China's construction crane industry status and future development of
Address the issue , to strengthen self-reflection
At present, China's construction jib crane industry affected by overcapacity , marketing tools are not standardized, product homogeneity and rising operating costs and other unfavorable factors, led to a price war industry , corporate capital chain issues grim , profitability is becoming increasingly difficult problems, leading enterprises operating deteriorating SMEs face life and death decisions , industry operating pressures continue to increase . Industries and enterprises to rationally analyze and address these issues resolved quickly .
Connotation and denotation , seeking to develop the path
2012 , China's construction crane industry in the market ups and difficulties ahead . Construction Steel crane industry is facing a new shuffle , how in the fierce competition in the market through difficult times , become the primary task of the current strategic development .
Organic growth is sustainable and stable development foundation
Increase product core technology research and optimize the product structure , improve product quality , foster product innovation capabilities, platform technology, security technology, environmental technology , energy technology and other fields to establish a common platform for the industry , vigorously develop innovative , energy saving, reduction rows of high-end products . Enhanced ability to resist risks strengthen the industry 's scientific judgment and market forecasts, and industry self- consciously combined with increased operational capacity to resist risks . Optimize production patterns and resource allocation should increase technical and supporting platform development and the transformation of the efforts to reduce manufacturing costs and improve after-market service capabilities. Strengthen the industry and corporate synergies and avoid vicious market competition and price Rush .
Extensive development is the future development of enterprises powerful boosters
Innovation and continuous improvement to enhance marketing management marketing channel construction system, increase efforts to support the agents . Strengthening fine management , improve service chain , enhance market service efforts . Differences based on user demand market segments , improve product user satisfaction. Constantly improve the product chain according to changes in market demand and strategic development needs ,overhead gantry crane increase capital operation and related areas of mergers and acquisitions , rapid expansion of product lines and customer access to resources in order to obtain a strong competitive advantage .
Actively explore overseas markets through a diversified, international road of development , and actively to infrastructure demand in emerging countries with economies expand markets, to further establish and improve the products and service chain , enhance corporate competitiveness in international markets .
At present, China's construction jib crane industry affected by overcapacity , marketing tools are not standardized, product homogeneity and rising operating costs and other unfavorable factors, led to a price war industry , corporate capital chain issues grim , profitability is becoming increasingly difficult problems, leading enterprises operating deteriorating SMEs face life and death decisions , industry operating pressures continue to increase . Industries and enterprises to rationally analyze and address these issues resolved quickly .
Connotation and denotation , seeking to develop the path
2012 , China's construction crane industry in the market ups and difficulties ahead . Construction Steel crane industry is facing a new shuffle , how in the fierce competition in the market through difficult times , become the primary task of the current strategic development .
Organic growth is sustainable and stable development foundation
Increase product core technology research and optimize the product structure , improve product quality , foster product innovation capabilities, platform technology, security technology, environmental technology , energy technology and other fields to establish a common platform for the industry , vigorously develop innovative , energy saving, reduction rows of high-end products . Enhanced ability to resist risks strengthen the industry 's scientific judgment and market forecasts, and industry self- consciously combined with increased operational capacity to resist risks . Optimize production patterns and resource allocation should increase technical and supporting platform development and the transformation of the efforts to reduce manufacturing costs and improve after-market service capabilities. Strengthen the industry and corporate synergies and avoid vicious market competition and price Rush .
Extensive development is the future development of enterprises powerful boosters
Innovation and continuous improvement to enhance marketing management marketing channel construction system, increase efforts to support the agents . Strengthening fine management , improve service chain , enhance market service efforts . Differences based on user demand market segments , improve product user satisfaction. Constantly improve the product chain according to changes in market demand and strategic development needs ,overhead gantry crane increase capital operation and related areas of mergers and acquisitions , rapid expansion of product lines and customer access to resources in order to obtain a strong competitive advantage .
Actively explore overseas markets through a diversified, international road of development , and actively to infrastructure demand in emerging countries with economies expand markets, to further establish and improve the products and service chain , enhance corporate competitiveness in international markets .
Chinese crane industry worldwide regional market status
Global crane market (except China) total capacity of about 15,000 units. Among emerging market development speed, such as Brazil, Russia, etc.; Chinese
bridge crane is gradually towards European markets, on a global scale with the International Crane compete with Taiwan, China Crane in product technology, production capacity, sales channels, overseas distribution already has the international market condition.
Based on the overall market volume,bridge gantry crane market economy status and stage of growth, nature of the market can be divided into three categories:
Potential market: large capacity, slow growth, such as the Middle East and Africa;
Growth markets: large capacity, high growth, such as Brazil, Russia, India, China, the CIS;
Mature markets: large capacity,gantry crane changes in the growth and stability, such as Europe, North America and Australia.
Based on the overall market volume,bridge gantry crane market economy status and stage of growth, nature of the market can be divided into three categories:
Potential market: large capacity, slow growth, such as the Middle East and Africa;
Growth markets: large capacity, high growth, such as Brazil, Russia, India, China, the CIS;
Mature markets: large capacity,gantry crane changes in the growth and stability, such as Europe, North America and Australia.
Chinese crane industry competitiveness in the regional market Market Situation
1) Technical aspects
At present, the Chinese eot crane through years of accumulated technology, product technology matures, major product technology to large-scale, high-speed and dedicated development, standardization and diversification to the general technology development, product performance progressive realization of automation, intelligent and digitization has have the ability to participate in international competition.
2) production capacity
Domestic crane market demand exceeds the sum of the market demand in other regions around the world, of which more than 90% of production capacity is driven by Chinese demand. hoist gantry crane domestic enterprises have been efforts to expand exports share, the target is to achieve market share of 30 to 35%. Currently China crane capacity far exceeds global demand, 2011 annual capacity up to 40,000 units.
3) sales channels
Global marketing network, personnel and equipment for gradual improvement. Chinese enterprises have gradually in sales of large cranes and sales network in areas without creating a new sales outlets around the world looking for new dealers, and the corresponding complete perfect global sales and service network, in order to lay the foundation for the hoist crane industry globalization.
4) the pace of internationalization
Gradually accelerated the pace of internationalization, construction machinery exports in 2015 will reach 20 billion U.S. dollars. Currently, dozens of companies to look into overseas markets, mergers and acquisitions continue to improve the industrial chain, to expand market share, enhance competitiveness, increasing exports, and constantly win billions of dollars in export large orders, record industry history record.
At present, the Chinese eot crane through years of accumulated technology, product technology matures, major product technology to large-scale, high-speed and dedicated development, standardization and diversification to the general technology development, product performance progressive realization of automation, intelligent and digitization has have the ability to participate in international competition.
2) production capacity
Domestic crane market demand exceeds the sum of the market demand in other regions around the world, of which more than 90% of production capacity is driven by Chinese demand. hoist gantry crane domestic enterprises have been efforts to expand exports share, the target is to achieve market share of 30 to 35%. Currently China crane capacity far exceeds global demand, 2011 annual capacity up to 40,000 units.
3) sales channels
Global marketing network, personnel and equipment for gradual improvement. Chinese enterprises have gradually in sales of large cranes and sales network in areas without creating a new sales outlets around the world looking for new dealers, and the corresponding complete perfect global sales and service network, in order to lay the foundation for the hoist crane industry globalization.
4) the pace of internationalization
Gradually accelerated the pace of internationalization, construction machinery exports in 2015 will reach 20 billion U.S. dollars. Currently, dozens of companies to look into overseas markets, mergers and acquisitions continue to improve the industrial chain, to expand market share, enhance competitiveness, increasing exports, and constantly win billions of dollars in export large orders, record industry history record.
Chinese crane industry product quality status
In recent years, in order to meet market demand, domestic enterprises constantly adjust product structure, improve the level of product technology and continuously improve product quality, to provide users with high-quality products, but still mainly targeted at the low-end market, compared with foreign construction
overhead bridge crane quality there are still large gaps, mainly reflected in the following aspects:
(1) product design sophistication uneven
Domestic construction cranes in appearance compared with foreign products, humane, product reliability, ease of installation, detail design some gaps. Domestic construction crane in appearance, humane, reliability, and other fine design mixed.
(2) the level of technology and assembly technology varies greatly
Precision-made overhead gantry crane materials, the appearance of coating, the flatness of the main cover and key parts of the weld and assembly technology level compared with foreign products have a certain gap.
Manufacturing and assembling technical level varies greatly, weld appearance of rough irregular, paint quality, but off, poor paint adhesion and corrosion resistance.
(3) the stability of the product quality is poor
Stability and quality of domestic parts larger than the gap with foreign products, affecting product life, such as the hydraulic system leakage, abnormal noise; electrical component aging, poor contact, malfunction; institutions like oil spills, abnormal sound, easy to maneuver , unreliable; bridge box category oil spills, leaks, broken teeth, badly operated; chambers and exterior parts leaking weld cracking,bridge gantry crane sealing off the aging and so on. Such as engine life abroad as 8000h, while China only 3000h; foreign service life of the hydraulic cylinder 100 to 200 million, while China is only 60 to 80 million times.
(1) product design sophistication uneven
Domestic construction cranes in appearance compared with foreign products, humane, product reliability, ease of installation, detail design some gaps. Domestic construction crane in appearance, humane, reliability, and other fine design mixed.
(2) the level of technology and assembly technology varies greatly
Precision-made overhead gantry crane materials, the appearance of coating, the flatness of the main cover and key parts of the weld and assembly technology level compared with foreign products have a certain gap.
Manufacturing and assembling technical level varies greatly, weld appearance of rough irregular, paint quality, but off, poor paint adhesion and corrosion resistance.
(3) the stability of the product quality is poor
Stability and quality of domestic parts larger than the gap with foreign products, affecting product life, such as the hydraulic system leakage, abnormal noise; electrical component aging, poor contact, malfunction; institutions like oil spills, abnormal sound, easy to maneuver , unreliable; bridge box category oil spills, leaks, broken teeth, badly operated; chambers and exterior parts leaking weld cracking,bridge gantry crane sealing off the aging and so on. Such as engine life abroad as 8000h, while China only 3000h; foreign service life of the hydraulic cylinder 100 to 200 million, while China is only 60 to 80 million times.
Crane product quality problems
Crane product quality problems,hoist gantry crane lead to the following conditions occur:
(1) out of the market due to product quality issues
1930s, the Japanese construction machinery in the process of expanding the international market as product quality is not reliable, the lack of spare parts, no maintenance service system, making the Japanese construction machinery into the U.S. market,overhead gantry crane bad reputation, resulting in product delisting.
(2) product quality fine compensation for the international market
20 In the 1990s, South Korea construction machinery into the international market, due to product quality caused damages, the majority of product returns, a lot of the claim.
(3) quality of products on the international market, the adverse impact
Some domestic construction machinery export products due to quality problems arise batches, made in China in the international community to have a negative impact, "Made in China" image cast a shadow of cheap and shoddy.
"Product quality" wake-up call to us, bridge gantry crane enterprises to enter the international market must ensure that the product quality, to avoid longer follow Japan, Korea and China construction machinery into the international market formula.
(1) out of the market due to product quality issues
1930s, the Japanese construction machinery in the process of expanding the international market as product quality is not reliable, the lack of spare parts, no maintenance service system, making the Japanese construction machinery into the U.S. market,overhead gantry crane bad reputation, resulting in product delisting.
(2) product quality fine compensation for the international market
20 In the 1990s, South Korea construction machinery into the international market, due to product quality caused damages, the majority of product returns, a lot of the claim.
(3) quality of products on the international market, the adverse impact
Some domestic construction machinery export products due to quality problems arise batches, made in China in the international community to have a negative impact, "Made in China" image cast a shadow of cheap and shoddy.
"Product quality" wake-up call to us, bridge gantry crane enterprises to enter the international market must ensure that the product quality, to avoid longer follow Japan, Korea and China construction machinery into the international market formula.
2013年8月28日星期三
Tower crane technology trends (3)
In product development to implement experimental verification.
Experimental validation of new products the most direct way is to improve product reliability and safety the most important means of inspection.
Reliability and safety of the product is mainly determined by the parts is parts safety and reliability of expression.hoist gantry crane Parts of the reliability and safety, reliability and safety of naturally high. Therefore, a large tower bridge crane manufacturer, invested a lot of financial and material resources to build their own experimental field, such as the structure and organization Potain experimental field in the 1980s, has been basically completed, a total area of 170,000 m2, with a variety of experiments stand over a hundred kinds of products subject to harsh conditions true and verify eligibility to the factory.bridge gantry crane Zoomlion is currently building its own tower cranes special experimental base.
Experimental validation of new products the most direct way is to improve product reliability and safety the most important means of inspection.
Reliability and safety of the product is mainly determined by the parts is parts safety and reliability of expression.hoist gantry crane Parts of the reliability and safety, reliability and safety of naturally high. Therefore, a large tower bridge crane manufacturer, invested a lot of financial and material resources to build their own experimental field, such as the structure and organization Potain experimental field in the 1980s, has been basically completed, a total area of 170,000 m2, with a variety of experiments stand over a hundred kinds of products subject to harsh conditions true and verify eligibility to the factory.bridge gantry crane Zoomlion is currently building its own tower cranes special experimental base.
Tower crane technology trends (2)
In recent years, with the development of technology tower crane, tower crane model specifications continuous improvement, performance, quality and continuous improvement, tower
overhead gantry crane s in addition to meet its secure, reliable and efficient basic performance, tends to be more intelligent and green . In China, Zoomlion is undoubtedly the most advanced technology enterprise, the following points highlight the latest technology trends. Especially international large enterprises the most advanced technology.
Intelligent control.
With digital, integrated, intelligent rapid development of technology, high reliability, low power consumption, miniaturization, integration, digitization of various hydraulic, mechanical and electrical components in a tower crane have been widely used, so that the drive and control system small size, light weight, compact structure. The control means, variable speed, security and surveillance systems, remote maintenance systems, automatic fault diagnosis system and other widely used to achieve a tower eot crane operations process control, automatic display and recording, remote remote control, etc., to ensure the tower the safe use of cranes and real-time monitoring, reducing the control points of failure and improve the reliability of tower crane, tower crane industry significantly enhance the management level.
Manufacture green.
Foreign tower bridge gantry crane s are designed to take full account of the common parts, modularity, high degree of intensification of component parts, suitable for mass production. Bulk of the parts from raw material pre-treatment, cutting, welding, machining, assembly, production lines are used to paint, so that not only improves the utilization of materials, parts commonality, product quality and aesthetics, and ease of management, reduce pollution and cost savings.
Intelligent control.
With digital, integrated, intelligent rapid development of technology, high reliability, low power consumption, miniaturization, integration, digitization of various hydraulic, mechanical and electrical components in a tower crane have been widely used, so that the drive and control system small size, light weight, compact structure. The control means, variable speed, security and surveillance systems, remote maintenance systems, automatic fault diagnosis system and other widely used to achieve a tower eot crane operations process control, automatic display and recording, remote remote control, etc., to ensure the tower the safe use of cranes and real-time monitoring, reducing the control points of failure and improve the reliability of tower crane, tower crane industry significantly enhance the management level.
Manufacture green.
Foreign tower bridge gantry crane s are designed to take full account of the common parts, modularity, high degree of intensification of component parts, suitable for mass production. Bulk of the parts from raw material pre-treatment, cutting, welding, machining, assembly, production lines are used to paint, so that not only improves the utilization of materials, parts commonality, product quality and aesthetics, and ease of management, reduce pollution and cost savings.
Tower crane technology trends (1)
Design method precision.
Deepening the development of computer technology has changed the tower crane design. Finite element technique, fatigue analysis, dynamic simulation analysis extensive application of tower gantry crane design calculations, stress analysis more precise, tower crane parts, structure design more reasonable; several powerful tower crane manufacturer, has their superior design capabilities, they take advantage of the development of tower cranes parametric design special software to make the tower crane design to further optimize the direction of advance, effectively improve tower crane product safety, reliability, energy saving effect while greatly shorten product development cycles,bridge gantry crane improve competitiveness.
Modular components.
The modular design may slight increase in manufacturing costs, but it can not only improve the yield and quality, but also can reduce management costs, but also correspondingly reduce the user acquisition costs. Models such as A and B models have many structural components (such as the standard section and the boom sections, the balance arm section) is generic, then the user can buy less common structure, staggered use of these common parts may idle , thereby reducing the cost of ownership. Thus, the modular design is the inevitable trend of development of tower cranes, tower hoist gantry crane many international manufacturers such as Liebherr, Potain, Terex, Wolffkran are all modular design of the model.
Deepening the development of computer technology has changed the tower crane design. Finite element technique, fatigue analysis, dynamic simulation analysis extensive application of tower gantry crane design calculations, stress analysis more precise, tower crane parts, structure design more reasonable; several powerful tower crane manufacturer, has their superior design capabilities, they take advantage of the development of tower cranes parametric design special software to make the tower crane design to further optimize the direction of advance, effectively improve tower crane product safety, reliability, energy saving effect while greatly shorten product development cycles,bridge gantry crane improve competitiveness.
Modular components.
The modular design may slight increase in manufacturing costs, but it can not only improve the yield and quality, but also can reduce management costs, but also correspondingly reduce the user acquisition costs. Models such as A and B models have many structural components (such as the standard section and the boom sections, the balance arm section) is generic, then the user can buy less common structure, staggered use of these common parts may idle , thereby reducing the cost of ownership. Thus, the modular design is the inevitable trend of development of tower cranes, tower hoist gantry crane many international manufacturers such as Liebherr, Potain, Terex, Wolffkran are all modular design of the model.
Lifting machinery and other industries need to support a large number of high-quality steel as a raw material
Construction machinery industry leading products including concrete machinery, road construction machinery, mining machinery,overhead gantry crane piling machinery, lifting machinery and wind power equipment such as a full range of products. Wide range of products in the industry are the need to support a large number of high-quality steel as raw material.
Iron and steel industry as excavators, rollers, rotary drilling rig, loaders, jib crane , concrete pumps and other construction machinery products are the main suppliers of raw materials, it is necessary to strengthen inter-sectoral cooperation, and promote the healthy development of the two industries, in order to achieve win-win situation. On the one hand, the construction machinery industry can help the steel industry to digest excess capacity; the other hand, the quality of construction machinery high demand for steel products, iron and steel enterprises can promote technological innovation to improve steel quality, so as to promote the sound development of the industry.
In this regard, some suggestions: First, the establishment of an information exchange platform, to strengthen inter-industry exchanges. Formed steel production development and construction machinery industry, seamless steel demand information; establish regular inter-industry discussion and consultation mechanisms, thematic studies on major issues, joint development of the industry to address the constraints of the problem.
Second is to strengthen industry research, providing valuable consulting services. Integration of two industry-related information, including changes in the steel market, steel, construction machinery industry demand for construction machinery enterprises and steel companies, providing a valuable reference information services.
Three is to guide the steel industry, engineering machinery enterprises to strengthen cooperation and establish a substantive strategic partnership in steel pretreatment, processing,Steel crane distribution and other areas of mutual shareholding, forming a true strategic alliance. Joint research and design, regular exchange of visits, and timely information about construction machinery enterprises demand for steel products, steel products quality problems feedback, so that mutual support and joint development.
Fourth is to strengthen go out and work together to develop overseas markets. Steel industry can bring in terms of going further develop the overseas market of construction machinery.
Iron and steel industry as excavators, rollers, rotary drilling rig, loaders, jib crane , concrete pumps and other construction machinery products are the main suppliers of raw materials, it is necessary to strengthen inter-sectoral cooperation, and promote the healthy development of the two industries, in order to achieve win-win situation. On the one hand, the construction machinery industry can help the steel industry to digest excess capacity; the other hand, the quality of construction machinery high demand for steel products, iron and steel enterprises can promote technological innovation to improve steel quality, so as to promote the sound development of the industry.
In this regard, some suggestions: First, the establishment of an information exchange platform, to strengthen inter-industry exchanges. Formed steel production development and construction machinery industry, seamless steel demand information; establish regular inter-industry discussion and consultation mechanisms, thematic studies on major issues, joint development of the industry to address the constraints of the problem.
Second is to strengthen industry research, providing valuable consulting services. Integration of two industry-related information, including changes in the steel market, steel, construction machinery industry demand for construction machinery enterprises and steel companies, providing a valuable reference information services.
Three is to guide the steel industry, engineering machinery enterprises to strengthen cooperation and establish a substantive strategic partnership in steel pretreatment, processing,Steel crane distribution and other areas of mutual shareholding, forming a true strategic alliance. Joint research and design, regular exchange of visits, and timely information about construction machinery enterprises demand for steel products, steel products quality problems feedback, so that mutual support and joint development.
Fourth is to strengthen go out and work together to develop overseas markets. Steel industry can bring in terms of going further develop the overseas market of construction machinery.
2013年8月27日星期二
Bridge crane related presentations
Here to tell you
overhead bridge crane related issues, so that we know more about:
Overhead bridge crane is the bridge in orbit a bridge crane. Bridge crane bridge laying on both sides along the elevated tracks run vertically, lifting trolley along the track on the bridge laying sideways to form a rectangle scope of work, you can take advantage of the space under the bridge lifting materials, not hampered by ground equipment.
Bridge crane is widely used in indoor and outdoor warehouses, factories, docks and open storage yard, etc.. hoist crane can be divided into ordinary, simple beam bridge crane bridge crane and metallurgical dedicated three.
General overhead cranes generally lifting trolley bridge operating agencies, bridge metal structures. Lifting trolley and the hoisting mechanism, trolley run institutions and small frame of three parts.
Lifting mechanism includes a motor, brake, reducer, drum and pulley. Motor through reducer, driving drum rotation, so that the wire rope around the drum or from a roll down to lift heavy loads.jib crane Small frame and mounting bracket is lifting mechanism and trolley run institutions and other parts of the rack, usually welded structure.
Overhead bridge crane is the bridge in orbit a bridge crane. Bridge crane bridge laying on both sides along the elevated tracks run vertically, lifting trolley along the track on the bridge laying sideways to form a rectangle scope of work, you can take advantage of the space under the bridge lifting materials, not hampered by ground equipment.
Bridge crane is widely used in indoor and outdoor warehouses, factories, docks and open storage yard, etc.. hoist crane can be divided into ordinary, simple beam bridge crane bridge crane and metallurgical dedicated three.
General overhead cranes generally lifting trolley bridge operating agencies, bridge metal structures. Lifting trolley and the hoisting mechanism, trolley run institutions and small frame of three parts.
Lifting mechanism includes a motor, brake, reducer, drum and pulley. Motor through reducer, driving drum rotation, so that the wire rope around the drum or from a roll down to lift heavy loads.jib crane Small frame and mounting bracket is lifting mechanism and trolley run institutions and other parts of the rack, usually welded structure.
Loosening of crane tracks
Often encountered in the inspection hoist gantry crane rail carts loose issues, from the following analysis of the reasons for this phenomenon:
One, carts are not synchronized
1, both sides of the wheel brake carts have successively
Has braking system makes the wheel carts parked on both sides of the time bias, resulting in the pendulum bridge, the situation will be severe bite rail phenomenon. At this point, the wheels will be in carts carts track along the main beam is generated perpendicular to the friction of the cart track, prompting the cart track loose.
2, the side of the brake, brake or no obvious side
In this case, the carts start or stop the system tray will see significant torsion moment, the brake is not obvious side, the end beam will swing back and forth, the cart wheel flange and rail side thereof,overhead gantry crane generate a horizontal lateral force, causing flange and rail friction, leading to loose track. So while one side of the braking effect is obvious in the torsion process to act as "support", in orbit will produce friction along the track direction, if not timely repair, rail will gradually loose.
Second, the bridge uneven
Likely to cause uneven tray carts four wheels not in the same plane, the run-time generated "three legs" and so on. Runtime carts will be "bumpy", severe cases occur throat rail phenomenon, generating friction along the track direction, leading to the track and plate loose.
Three, wheel problem
1, horizontal deflection wheels. Deformation due to the bridge, prompting the end of the horizontal beam bending, resulting in horizontal deflection wheels or wheel installation tolerance level already skewed tolerance.
2, the wheel vertical deflection. Deformation due to the bridge, causing the wheel vertical deviation tolerance. Installation should pay attention to the same set of wheels are slightly skewed to the outside, causing the bridge to reduce wheel bearing rear vertical deflection.
3, two equal diameter capstan. The bridge gantry crane operation, the speed is not the same as the left and right.
4, the front and rear wheels are not run along the same line. Bridge span due to deformation caused by excessive bias or diagonal, the front and rear wheels can run on the same straight line.
2013年8月25日星期日
Inadequate crane industry: basic components, basic research and development lags behind.
Through research and development, technological innovation, the introduction of digestion, China tower
bridge gantry crane business tools and accessories designed production capacity have made great progress, advanced computer design, microelectronic technology, remote monitoring and other technologies are tower crane has been applied. But the Chinese tower crane technical performance, production quality, variety and reliability models, compared with developed countries, there are still gaps, mainly reflected in: the reliability of domestic components, such as electrical components, hydraulic components, transmission components; process equipment, laboratory equipment and testing means not complete; basic research is not deep enough, such as the local structure of quantitative analysis and reliability studies. This has affected our whole product quality and reliability, increased accidents.
In addition, the transmission mechanism configured low tower eot crane has become a constraint to improve technical performance bottleneck, the host development are severely constrained. Transmission mechanism to use more than the backward speed control mode, the impact of large speed range is narrow. Hoisting mechanism is still much lower transmission efficiency using a soft tooth cylindrical gear reducer, using pole squirrel cage motor speed, two-speed motor winding plus eddy current brake governor, RCS dual motor speed; slewing mechanism to use more around line speed motor plus fluid coupling;hoist gantry crane luffing mechanism of multi-use multi-speed motor speed.
In addition, the transmission mechanism configured low tower eot crane has become a constraint to improve technical performance bottleneck, the host development are severely constrained. Transmission mechanism to use more than the backward speed control mode, the impact of large speed range is narrow. Hoisting mechanism is still much lower transmission efficiency using a soft tooth cylindrical gear reducer, using pole squirrel cage motor speed, two-speed motor winding plus eddy current brake governor, RCS dual motor speed; slewing mechanism to use more around line speed motor plus fluid coupling;hoist gantry crane luffing mechanism of multi-use multi-speed motor speed.
Chinese tower crane continuously enhance international competitiveness.
Since the 2008 financial crisis, the U.S. and European markets to drop sharply; And thanks to the accelerated process of urbanization in China, China tower
hoist gantry crane market ushered in a rapid growth phase. At present, China has more than 400 tower crane manufacturer, can produce more than 100 kinds of models of the tower crane, to achieve annual sales of 100,000 units.
Domestic tower structural analysis of the product gradually applied accurate calculation method, by the computer to the tower body parts for strength, stiffness, stability and overall stability calculations, to enhance the precision and design capabilities. Control systems, PLC systems, transformation and frequency conversion stepless speed, fault self-diagnosis monitoring, field bus, remote control and other technology has been in the tower Steel crane has been widely applied to improve tower crane performance and security. Basic research, the strength of enterprises, the construction of a complete laboratory, through the new technologies, new structures for quantitative analysis and assessment, improve the reliability of the tower crane.
Chinese tower crane manufacturing industry chain has been formed and matured, the quality has reached the international advanced level, while foreign companies tower crane products are basically localized. Meanwhile, the Chinese tower crane industry independent innovation capability by leaps and bounds. Chinese tower crane export areas more than 144 countries and regions, only 2012 exports to more than 300 million U.S. dollars. China has become the world tower crane tower crane indispensable part.
Particularly the European Union through the international industry standard tower crane in-depth research, to enhance the industry's in-depth understanding of the tower crane, thereby increasing the level of the overall design of the tower crane, the Chinese tower overhead gantry crane product performance and security in Europe and America market access threshold.
Domestic tower structural analysis of the product gradually applied accurate calculation method, by the computer to the tower body parts for strength, stiffness, stability and overall stability calculations, to enhance the precision and design capabilities. Control systems, PLC systems, transformation and frequency conversion stepless speed, fault self-diagnosis monitoring, field bus, remote control and other technology has been in the tower Steel crane has been widely applied to improve tower crane performance and security. Basic research, the strength of enterprises, the construction of a complete laboratory, through the new technologies, new structures for quantitative analysis and assessment, improve the reliability of the tower crane.
Chinese tower crane manufacturing industry chain has been formed and matured, the quality has reached the international advanced level, while foreign companies tower crane products are basically localized. Meanwhile, the Chinese tower crane industry independent innovation capability by leaps and bounds. Chinese tower crane export areas more than 144 countries and regions, only 2012 exports to more than 300 million U.S. dollars. China has become the world tower crane tower crane indispensable part.
Particularly the European Union through the international industry standard tower crane in-depth research, to enhance the industry's in-depth understanding of the tower crane, thereby increasing the level of the overall design of the tower crane, the Chinese tower overhead gantry crane product performance and security in Europe and America market access threshold.
China the status of tower cranes
Chinese tower crane began in the 1950s. Looking at the 60-year history, China tower crane industry from scratch,overhead bridge crane from small to large, and gradually formed a relatively complete system and more complete spectrum, tower crane industry has also become China's construction machinery industry the fastest growing one. Today, China has been able to produce 100 kN to 52,000 kN m m tower crane, construction will not only meet the domestic demand, but also are exported to all over the world, especially in small quantities are exported to European and American countries and regions. China has become the world's largest producer of tower cranes.
A status quo
Through 60 years of efforts, China tower bridge gantry crane industry in the industrial scale, independent innovation, restructuring, etc. have achieved remarkable results.
(1) industry continues to expand rapidly.
Since the 1990s, China tower crane industry has been rapid development, especially in recent years, research and development capabilities continue to increase, the various forms of tower crane product spectrum increasingly sophisticated, the tower crane production and sales continued to climb, China has become the world's civil tower crane largest producer, is the world's largest tower crane use of power.
2007 China's total sales of tower crane 31020 units, compared with 2006 increased by 59.72%, domestic tower overhead gantry crane holdings exceed 10 million units. Since then China tower crane market has entered a rapid development stage one, as of 2012 the domestic tower crane ownership has more than 300,000 units, with an annual growth rate of over 25%.
A status quo
Through 60 years of efforts, China tower bridge gantry crane industry in the industrial scale, independent innovation, restructuring, etc. have achieved remarkable results.
(1) industry continues to expand rapidly.
Since the 1990s, China tower crane industry has been rapid development, especially in recent years, research and development capabilities continue to increase, the various forms of tower crane product spectrum increasingly sophisticated, the tower crane production and sales continued to climb, China has become the world's civil tower crane largest producer, is the world's largest tower crane use of power.
2007 China's total sales of tower crane 31020 units, compared with 2006 increased by 59.72%, domestic tower overhead gantry crane holdings exceed 10 million units. Since then China tower crane market has entered a rapid development stage one, as of 2012 the domestic tower crane ownership has more than 300,000 units, with an annual growth rate of over 25%.
New bridge crane lightweight design is concerned with energy-saving technology
As a chemical, nuclear, construction and other areas of essential machinery and equipment, for decades, there has been the whole of the
bridge gantry crane itself weight, more energy, lifting height and low vulnerability. Many domestic crane manufacturer, has been engaged in research and innovation, but most manufacturers to create
The focus of the new process improvements on the main beam, a large crane structure, manufacturing costs and higher energy consumption defects still hard to change.
How to break the "short board", the implementation of competitive differentiation? Bump Heavy Industries will look aimed at "lightweight, energy-saving, intelligent crane." Which is what the current domestic eot crane industry has not yet overcome the technical problems.
Since 2008, the bump Heavy Industries began implementing the "energy-saving lightweight design crane" development plan. After four years of research and development, Heavy bump key components for cranes that lift trolley, electric hoist and crane girders, etc. of innovation and improvement. "Simply, is the
The weight of these components down, the lift going up and achieve intelligent control. "Bump Heavy chairman Zhu Jianjun said.
Lifting crane trolley is hidden in the core of the "engine." Structure in the conventional crane, a lifting capacity of 100 tons lifting trolley, its own weight is 30 tons. The "heavy" burden direct result of the hoist gantry crane in size, weight, energy consumption, the "
Backward. "
How to reduce weight even lifting the car, but also improve work efficiency? Bump Heavy flexible introduction more than 10 technical experts, lightweight lifting trolley for research and development. More than two years of exploration, not only to achieve the lifting trolley remote control while lifting force according to the situation on the start
Weight trolley wheel material, such as heat treatment process has been redesigned, lifting the car a new look.
Data show that the practical application of the same lifting height of crane trolley, reduce its weight by 55%, lifting power consumption reduced by half, the volume is significantly reduced. With the most advanced compared to similar products, the new car and light weight lifting by 9.2%. At present, this innovative technology has been applied
National invention patent.
Overhead crane in accordance with current domestic market holdings calculated that if all use of this new lightweight energy bump crane, the annual saving for the consumer with more than 500 million kwh, equivalent to the average daily power generation of Three Gorges power station more than 2 times.
The focus of the new process improvements on the main beam, a large crane structure, manufacturing costs and higher energy consumption defects still hard to change.
How to break the "short board", the implementation of competitive differentiation? Bump Heavy Industries will look aimed at "lightweight, energy-saving, intelligent crane." Which is what the current domestic eot crane industry has not yet overcome the technical problems.
Since 2008, the bump Heavy Industries began implementing the "energy-saving lightweight design crane" development plan. After four years of research and development, Heavy bump key components for cranes that lift trolley, electric hoist and crane girders, etc. of innovation and improvement. "Simply, is the
The weight of these components down, the lift going up and achieve intelligent control. "Bump Heavy chairman Zhu Jianjun said.
Lifting crane trolley is hidden in the core of the "engine." Structure in the conventional crane, a lifting capacity of 100 tons lifting trolley, its own weight is 30 tons. The "heavy" burden direct result of the hoist gantry crane in size, weight, energy consumption, the "
Backward. "
How to reduce weight even lifting the car, but also improve work efficiency? Bump Heavy flexible introduction more than 10 technical experts, lightweight lifting trolley for research and development. More than two years of exploration, not only to achieve the lifting trolley remote control while lifting force according to the situation on the start
Weight trolley wheel material, such as heat treatment process has been redesigned, lifting the car a new look.
Data show that the practical application of the same lifting height of crane trolley, reduce its weight by 55%, lifting power consumption reduced by half, the volume is significantly reduced. With the most advanced compared to similar products, the new car and light weight lifting by 9.2%. At present, this innovative technology has been applied
National invention patent.
Overhead crane in accordance with current domestic market holdings calculated that if all use of this new lightweight energy bump crane, the annual saving for the consumer with more than 500 million kwh, equivalent to the average daily power generation of Three Gorges power station more than 2 times.
Crane industry users need to have basic knowledge
Construction engineering machinery products more harsh working conditions, machine failure is common.gantry crane Some product quality problems, some improper use ...... but no matter what the problem is, are allowing companies struggling to cope with disputes; For the user, the loss of time and money is no longer
France to restore. To avoid unnecessary disputes when try to avoid, rather than disputes arising from the use of the product, the user and the enterprise or agency in court, as both sides will be more work done full and pro-active approach. The appeal of the enterprise is more common topic,jib crane mainly lies in the End
Good quality management and service sectors; appeal lies users need to take care of the machine.
First, the user must have sufficient expertise, engineering machinery products generally expensive, at the time of purchase to carefully check the performance of the machine and wearing parts. Whether buying new models, still has some models, you must read the instruction manual carefully and carefully check
Investigation, in order to avoid the possibility of accidentally buy defective.
Second, in addition to seriously listen to manufacturers to explain the product to use, but also carefully studied repair and maintenance instruction manual, and timely with the distributor or manufacturer service agreement. Fails, the user should promptly get in touch with the enterprise, to take the quickest way to solve the problem. Now
After a number of enterprises to establish a more perfect service examination system, from the user to the enterprise from the time of the problem, the relevant departments have begun to service engineers to supervise and urge them to improve work efficiency.
Third, the user must possess the necessary skills,overhead gantry crane equipment maintenance, after-sales service to make it easier for businesses and consumers to save time.
Fourth, the operator should possess professional qualifications of the personnel to use and routine maintenance. As a result of improper use of product failures are common, such cases do not belong to the scope of rights. This will not only delay the use of the user, but also to manufacturers resulting in unnecessary trouble. In order to avoid
Avoid this from happening, we must strengthen the operator's skills training, obtaining the necessary operating certificate to posts.
Fifth, we should grasp the law as a weapon. Encounter difficult problem, indeed proven responsibility manufacturers, but manufacturers mediation fails, the user should be timely recourse to consumer protection associations, if necessary, should take legal action.
Xieyanmache proposals do not want to weaken the user to seek their own awareness of rights protection, but rather to promote communication and cooperation with the user enterprise, and strive in the most convenient way to solve the real problems occur
France to restore. To avoid unnecessary disputes when try to avoid, rather than disputes arising from the use of the product, the user and the enterprise or agency in court, as both sides will be more work done full and pro-active approach. The appeal of the enterprise is more common topic,jib crane mainly lies in the End
Good quality management and service sectors; appeal lies users need to take care of the machine.
First, the user must have sufficient expertise, engineering machinery products generally expensive, at the time of purchase to carefully check the performance of the machine and wearing parts. Whether buying new models, still has some models, you must read the instruction manual carefully and carefully check
Investigation, in order to avoid the possibility of accidentally buy defective.
Second, in addition to seriously listen to manufacturers to explain the product to use, but also carefully studied repair and maintenance instruction manual, and timely with the distributor or manufacturer service agreement. Fails, the user should promptly get in touch with the enterprise, to take the quickest way to solve the problem. Now
After a number of enterprises to establish a more perfect service examination system, from the user to the enterprise from the time of the problem, the relevant departments have begun to service engineers to supervise and urge them to improve work efficiency.
Third, the user must possess the necessary skills,overhead gantry crane equipment maintenance, after-sales service to make it easier for businesses and consumers to save time.
Fourth, the operator should possess professional qualifications of the personnel to use and routine maintenance. As a result of improper use of product failures are common, such cases do not belong to the scope of rights. This will not only delay the use of the user, but also to manufacturers resulting in unnecessary trouble. In order to avoid
Avoid this from happening, we must strengthen the operator's skills training, obtaining the necessary operating certificate to posts.
Fifth, we should grasp the law as a weapon. Encounter difficult problem, indeed proven responsibility manufacturers, but manufacturers mediation fails, the user should be timely recourse to consumer protection associations, if necessary, should take legal action.
Xieyanmache proposals do not want to weaken the user to seek their own awareness of rights protection, but rather to promote communication and cooperation with the user enterprise, and strive in the most convenient way to solve the real problems occur
Crane brake selection requirements
In the daily special equipment inspection and testing work, often come into contact with the
hoist crane brake, brake device's configuration meet the actual relationship to the life of the equipment and the use of safety. Crane commonly used standard series brake device has electro-hydraulic block brake, electromagnetic brake blocks, disc brakes, band brake, with its selection generally consider type, size, and be checked checking, taking into account the use of the environment, etc. relevant factors.
In order to alleviate the wear on the brakes, the brake excessive alleviate the impact and vibration, it is recommended to support the brake and controlling the brake and use. Braking is generally electric braking control, such as regenerative braking, reverse braking, braking and eddy current braking. Electric braking is used only dissipate the kinetic energy, so that institutions safe deceleration. With electric braking when used to support the brake shall be solely to meet the minimum safety factor of the original regulations. Secondary brake can also be used to reduce wear and impact, dissipate the kinetic energy for the first braking, deceleration and stop the mechanical safety, and the second brake to ensure the safety of the brake support, such as for wind braking. National standards: For hook bridge crane, hoisting mechanism when working level equal to or higher than the M4 and the rated lifting speed is equal to or higher than 5m/min should be used when electrical braking methods to ensure 0.2-1.0 times the rated capacity in fall within the scope of the load, the speed of the motor before the brake is reduced to 1.3 or less synchronous speed. Conventional standard brakes work environment may not have flammable, explosive and corrosive gases, such as environmental conditions exceed the relevant provisions should be used in explosion-proof type brakes.
Brake specifications determined, in order to ensure the brake or brakes can effectively support the load and avoid braking distance is too long or too much impact braking, the brake mechanism should be checked average deceleration, braking time, the system moving distance. Different equipment used in different conditions, the relevant standard for the appropriate agency, the average deceleration, braking time and braking distance are made clear. For vertical brake Brake and frequently used in a high temperature environment should be heat checking the brakes,bridge gantry crane the brake test at the maximum allowable temperature is greater than the heat of the heat generated during braking, in order to avoid overheating damage or failure of the friction surface .
In order to alleviate the wear on the brakes, the brake excessive alleviate the impact and vibration, it is recommended to support the brake and controlling the brake and use. Braking is generally electric braking control, such as regenerative braking, reverse braking, braking and eddy current braking. Electric braking is used only dissipate the kinetic energy, so that institutions safe deceleration. With electric braking when used to support the brake shall be solely to meet the minimum safety factor of the original regulations. Secondary brake can also be used to reduce wear and impact, dissipate the kinetic energy for the first braking, deceleration and stop the mechanical safety, and the second brake to ensure the safety of the brake support, such as for wind braking. National standards: For hook bridge crane, hoisting mechanism when working level equal to or higher than the M4 and the rated lifting speed is equal to or higher than 5m/min should be used when electrical braking methods to ensure 0.2-1.0 times the rated capacity in fall within the scope of the load, the speed of the motor before the brake is reduced to 1.3 or less synchronous speed. Conventional standard brakes work environment may not have flammable, explosive and corrosive gases, such as environmental conditions exceed the relevant provisions should be used in explosion-proof type brakes.
Brake specifications determined, in order to ensure the brake or brakes can effectively support the load and avoid braking distance is too long or too much impact braking, the brake mechanism should be checked average deceleration, braking time, the system moving distance. Different equipment used in different conditions, the relevant standard for the appropriate agency, the average deceleration, braking time and braking distance are made clear. For vertical brake Brake and frequently used in a high temperature environment should be heat checking the brakes,bridge gantry crane the brake test at the maximum allowable temperature is greater than the heat of the heat generated during braking, in order to avoid overheating damage or failure of the friction surface .
2013年8月23日星期五
Broken crane industry ---- decade deep integration
Summit in 2012 list, released worldwide in cranes, XCMG ranks first. Decade, domestic crane emerge in the international market,bridge gantry crane recalling the course of growth, vice president of XCMG, XCMG heavy general manager Lu Chuan that this is mainstream enterprise leading the industry to upgrade, to achieve technological breakthroughs in the golden years.
From 2000 to 2005, the global crane industry in more than 25% compound annual growth of high-speed growth, of which China contributed the largest increase, cranes sales grow exponentially since 1999, in 2003 exceeded 1 million units. Following 70 years of the last century, the United States mid-annual 7500 Taiwan, Japan in 1980 after record 8000 production, China has become the world's largest crane producer.
Meanwhile, mainstream companies achieve two key breakthroughs, one scale production capacity exceeded 1 million units, the second is innovation needs to adapt to China's one hundred-ton crane technology less,hoist gantry crane overcome all terrain crane core technology, forming a low-end high school Chinese technical schools, which is particularly critical, it establishes a Chinese crane unique cost advantage.
2005 to 2010, the macroeconomic environment presents important changes: States to increase investment in infrastructure, energy and other major construction projects led to the lifting process of technological innovation, the process to achieve three major breakthroughs in mainstream enterprise: First international speed, the second is the crane Product structure and category further subdivided spectrum coverage spans from 5 tons to 2,000 tons, vehicle type, car type, all terrain, crawler, off-road tire, etc. have been developed; Third, large-scale. China's largest tonnage of 200 tons crane history is broken, the global crane industry completed from the hundred-ton to kiloton leap.
2010-2012, the macroeconomic environment remains tight, but the supply capacity has nearly tripled, mainstream enterprise on the one hand to deal with a variety of competitive pressures, but also to seize the area of structural changes in the strategic layout to achieve the second international take-off, the layout of the products and technologies quickly seize large tonnage highs, Chinese enterprises once again demonstrated the advantage, one by one, "the world" is being, or is about to be born, and a user in order to enhance the value of the theme of the next generation technological revolution is emerging.
Lu Chuan that after 2012 Chinese crane market will be more exciting, in 3 to 5 years time,overhead gantry crane one hundred-ton to kiloton product spectrum will be more intensive, technology will be more mature, people will gradually from the initial pair of Chinese Enterprise successive breakthrough "world's largest" surprise calm down, deeper into engineering applications and user requirements.
From 2000 to 2005, the global crane industry in more than 25% compound annual growth of high-speed growth, of which China contributed the largest increase, cranes sales grow exponentially since 1999, in 2003 exceeded 1 million units. Following 70 years of the last century, the United States mid-annual 7500 Taiwan, Japan in 1980 after record 8000 production, China has become the world's largest crane producer.
Meanwhile, mainstream companies achieve two key breakthroughs, one scale production capacity exceeded 1 million units, the second is innovation needs to adapt to China's one hundred-ton crane technology less,hoist gantry crane overcome all terrain crane core technology, forming a low-end high school Chinese technical schools, which is particularly critical, it establishes a Chinese crane unique cost advantage.
2005 to 2010, the macroeconomic environment presents important changes: States to increase investment in infrastructure, energy and other major construction projects led to the lifting process of technological innovation, the process to achieve three major breakthroughs in mainstream enterprise: First international speed, the second is the crane Product structure and category further subdivided spectrum coverage spans from 5 tons to 2,000 tons, vehicle type, car type, all terrain, crawler, off-road tire, etc. have been developed; Third, large-scale. China's largest tonnage of 200 tons crane history is broken, the global crane industry completed from the hundred-ton to kiloton leap.
2010-2012, the macroeconomic environment remains tight, but the supply capacity has nearly tripled, mainstream enterprise on the one hand to deal with a variety of competitive pressures, but also to seize the area of structural changes in the strategic layout to achieve the second international take-off, the layout of the products and technologies quickly seize large tonnage highs, Chinese enterprises once again demonstrated the advantage, one by one, "the world" is being, or is about to be born, and a user in order to enhance the value of the theme of the next generation technological revolution is emerging.
Lu Chuan that after 2012 Chinese crane market will be more exciting, in 3 to 5 years time,overhead gantry crane one hundred-ton to kiloton product spectrum will be more intensive, technology will be more mature, people will gradually from the initial pair of Chinese Enterprise successive breakthrough "world's largest" surprise calm down, deeper into engineering applications and user requirements.
Southeast ---- Chinese construction machinery exports popular area
In 2012, the Chinese people in Southeast Asia have a new understanding of its not because of the tension between the Philippines,jib crane Southeast Asia and Japan is not because the steel market of the dispute, but along with housing construction, roads, power plants and other infrastructure projects continue to be launched Southeast Asia's rapid economic growth, China has become a hot spot for exports of construction machinery. If the world economy are strong, and Southeast Asian markets may not be so eye-catching. The face of the European debt crisis, the Spanish real estate bubble in the entire world economy cope with the Depression, when the sudden emergence of Southeast Asia,overhead gantry crane I believe, this is not just Chinese construction machinery enterprises, "cornucopia", is the world of construction machinery enterprises competing to compete in the new battlefield.
Southeast Asia, Southeast Asia, appeared late in World War II a new area name, owner, including Vietnam, Laos, Cambodia, Thailand, Myanmar, Malaysia, Singapore, Indonesia, Brunei, the Philippines, East Timor, May 20, 2002, democratic Republic of Timor-Leste was formally established in 11 countries,Steel crane with an area of about 4,570,000 square kilometers, a population of about 560 million. Is one such area, has become a Chinese construction machinery exports popular area.
Southeast Asia, Southeast Asia, appeared late in World War II a new area name, owner, including Vietnam, Laos, Cambodia, Thailand, Myanmar, Malaysia, Singapore, Indonesia, Brunei, the Philippines, East Timor, May 20, 2002, democratic Republic of Timor-Leste was formally established in 11 countries,Steel crane with an area of about 4,570,000 square kilometers, a population of about 560 million. Is one such area, has become a Chinese construction machinery exports popular area.
Vietnam construction machinery market: long expecting development opportunities
Day, China CCPIT professionals said that the Vietnamese market in 2012 depends on three conditions: first, the euro crisis could last; Second, the U.S. economy can revive; Third,bridge crane if there is a new Vietnam policy to stimulate the economy and new investment plans. Vietnam is relatively weak manufacturing countries, weak infrastructure is Vietnam Industrial Zone in the development process a major obstacle. At present, Vietnam's infrastructure projects is on the rise in the demand for large construction machinery but eager, Vietnam local industry is still in its infancy, can not meet the needs of social development, more than 90% dependent on foreign imports of machinery and equipment. For excavators, bulldozers, graders, rollers, lifts, tower cranes, concrete mixing equipment, steel structures, cranes,bridge gantry crane piling machinery and other products in great demand, for the Chinese construction machinery enterprises, this can be described as a Millennium rare development opportunity.
According to the Vietnam General Statistics Office released data show, Vietnam 2012 Vietnam 2 months ago merchandise exports $ 15.3 billion, an increase of 24.8%. Growth in exports of products, machinery and parts for the $ 719 million, an increase of 56.5%, transport and parts of $ 589 million,gantry crane an increase of 86.4%. From these figures show that Vietnam's construction machinery market is constantly active in.
Philippines - construction machinery enterprises export optimistic response
In recent years, the Philippines, construction machinery market is growing, the price competition is fierce.overhead bridge craneoverhead bridge crane In contrast, the Chinese engineering machinery products affordable and fast delivery widely Philippine customers. Philippines is currently under construction and planning of future infrastructure projects are many, the Philippines is also very rich in minerals, nickel ore reserves is 70% of the world's total, and the strength of the Chinese commercial deep penetration of the Philippines, "mining, real estate, aviation industry , infrastructure ...... trekking are the lifeblood of the Chinese control. "
Philippine Trade and Industry officials have said in the beginning of this year, the Philippines will adjust the direction of exports, the export focus from the United States and Europe to China and others have signed a free trade area agreement economies, which are for Chinese exports of construction machinery in the Philippines to create a unique advantage.bridge gantry crane So far, the Southeast Asian countries of China's construction machinery enterprises is definitely an enormous temptation. Infrastructure, agriculture, construction and mining engineering, increasing the demand for construction machinery, whether it is equipment leasing or sale, it is undeniable Southeast Asia is a huge potential market. How can capture the huge potential in Southeast Asia construction machinery market? In addition to utilizing the unique geographical advantages, the price advantage, China's construction machinery enterprises should innovate in an effort to service and quality counterparts,overhead gantry crane meanwhile, should pay close attention to market developments after the Southeast Asian countries, so as to achieve a long history.
Philippine Trade and Industry officials have said in the beginning of this year, the Philippines will adjust the direction of exports, the export focus from the United States and Europe to China and others have signed a free trade area agreement economies, which are for Chinese exports of construction machinery in the Philippines to create a unique advantage.bridge gantry crane So far, the Southeast Asian countries of China's construction machinery enterprises is definitely an enormous temptation. Infrastructure, agriculture, construction and mining engineering, increasing the demand for construction machinery, whether it is equipment leasing or sale, it is undeniable Southeast Asia is a huge potential market. How can capture the huge potential in Southeast Asia construction machinery market? In addition to utilizing the unique geographical advantages, the price advantage, China's construction machinery enterprises should innovate in an effort to service and quality counterparts,overhead gantry crane meanwhile, should pay close attention to market developments after the Southeast Asian countries, so as to achieve a long history.
Indonesia: Chinese construction machinery export outlook
Many countries in Southeast Asia, Indonesia, can be described as the pearl of this emerging market. Indonesia is Southeast Asia's largest country in the total economy, the construction machinery market is Southeast Asia's most important construction machinery market.
Since 2002, Indonesia's booming construction industry,eot crane with the construction of infrastructure for construction machinery and equipment needs, the government for roads, railways, ports, airports, power stations and other investment projects totaling U.S. $ 230 billion. According to Indonesian media reports, in view of the growing demand for rail transport large Indonesian Ministry of National Railway Administration must build more railway network, according to the Indonesian government's plan, until 2030, the National Railway Administration should be able to add 10,000 2,100 km of railway lines. China Construction Machinery Business senior analyst optimistic estimates,hoist gantry crane Indonesia infrastructure market in the future will be to maintain the good momentum of rapid development.
2011 bilateral trade volume between China and Indonesia nearly $ 43 billion, China has become Indonesia's main trading partner and export markets. The Indonesian government announced the official launch of "Indonesia's economic development plan 2011-2025", the government hopes to implement the overall plan, and strive to achieve in 2025 among the world's top ten economic powers vision goals. This ambitious goal is bound to further promote the introduction of large-scale infrastructure in Indonesia building program.
In addition to traditional engineering machinery products, Indonesia mining equipment, transportation equipment and other products, demand is also very great. Indonesia is very rich in coal resources, coal industry has become a pillar industry of Indonesia's exports,hoist crane according to the Indonesian Ministry of Energy and Mines is expected that by 2025, Indonesia's coal production will reach 405 million tons, of which 2/3 will be used for export.
Since 2002, Indonesia's booming construction industry,eot crane with the construction of infrastructure for construction machinery and equipment needs, the government for roads, railways, ports, airports, power stations and other investment projects totaling U.S. $ 230 billion. According to Indonesian media reports, in view of the growing demand for rail transport large Indonesian Ministry of National Railway Administration must build more railway network, according to the Indonesian government's plan, until 2030, the National Railway Administration should be able to add 10,000 2,100 km of railway lines. China Construction Machinery Business senior analyst optimistic estimates,hoist gantry crane Indonesia infrastructure market in the future will be to maintain the good momentum of rapid development.
2011 bilateral trade volume between China and Indonesia nearly $ 43 billion, China has become Indonesia's main trading partner and export markets. The Indonesian government announced the official launch of "Indonesia's economic development plan 2011-2025", the government hopes to implement the overall plan, and strive to achieve in 2025 among the world's top ten economic powers vision goals. This ambitious goal is bound to further promote the introduction of large-scale infrastructure in Indonesia building program.
In addition to traditional engineering machinery products, Indonesia mining equipment, transportation equipment and other products, demand is also very great. Indonesia is very rich in coal resources, coal industry has become a pillar industry of Indonesia's exports,hoist crane according to the Indonesian Ministry of Energy and Mines is expected that by 2025, Indonesia's coal production will reach 405 million tons, of which 2/3 will be used for export.
Aerial of future industry development prospects
Aerial is a kind of operating personnel, tools, materials, and so on through aerial work platforms lifted to specify the location for a variety of installation, maintenance and other job-specific aerial work machinery, both belonging to private cars,overhead gantry crane but also belong to the engineering machinery, is a Important construction equipment.
The impact of macroeconomic developments
Aerial vehicles used for aerial work is an advanced way of climbing operation, and its level of development and national economic development are closely related, according to foreign media magazine aerial work machinery "AccessInternational" reports,Steel crane statistics are shown in Table 1. Economy is more developed, The greater the demand, and the greater the demand per unit of GDP. From Table 1 and Table 2 shows that the demand of the trade gap with developed countries or regions. Compared with developed countries and regions, China is not only the demand per unit of GDP is small, but the demand per unit of GDP and GDP ratio is also low, indicating that the market demand for aerial work only with the economies of scale, but also with the degree of economic development, This just shows aerial vehicles in China has a very broad prospects for development.
High security, high operating efficiency and high environmental adaptability
Aerial vehicles as an engineering vehicle, its particularity is: First manned aerial, its operational safety requirements than general engineering vehicles is high, the so-called high security; Second, the non-structural construction workplace environment, that is, its unpredictable and changing work environment, thus requiring a high adaptability to the environment; three is often used for its repair work, and more for outdoor or field operations, operating environment conditions are poor, so they requested that it has a high operating efficiency.
Cities with the engineering vehicle characteristics
Currently our users is concentrated in the city or town,hoist gantry crane and its working conditions than the general transport vehicles and construction machinery better, but mainly for the back-end infrastructure and routine maintenance and repair of its service life expectations are high, therefore, requires General construction vehicles having different characteristics requirements: Multifunction; appearance, coating color construction vehicles have both athletic, but also have cars vitality, and to maintain long-term. Flexible; may be appropriate to load cargo, such as job with the tools, equipment, materials, and so on. Can carry operations team personnel, such as the power industry 4-6 people, 3-5 people street industry, with features and construction vehicles car comfort.
Personalized, differentiated demand
As versatile aerial vehicles, involving industry and more jobs with different contents for each industry,
According to incomplete statistics, China's annual urban building maintenance only due to the use of the aerial gondola fall occurs, has led to nearly 5,000 deaths, while in developed countries, such practices have basically disappeared, replaced by aerial vehicles. Therefore, the future maintenance of the extensive use of urban architecture aerial vehicles.
Equipment leasing industry in developed countries is the main force aerial vehicles procurement, accounting for 80% of total demand, while China is almost zero, the user must use to buy. With China's construction equipment rental industry, users do not have to invest in can be rented, will inevitably lead to a large number of additions to the leasing industry,eot crane therefore leasing industry will be aerial vehicles market demand growth potential of the industry.
The foregoing analysis, referring to the situation in developed countries, China's demand for high-altitude operation truck realities and needs of the potential is very small compared to that in the next 20-30 years, China aerial vehicles will maintain a sustained rapid pace of product development. By 2015, the ownership will be 10,000 units in 2008 increased to at least 40,000 or so units, and about 10% -20% annual growth pace.
The impact of macroeconomic developments
Aerial vehicles used for aerial work is an advanced way of climbing operation, and its level of development and national economic development are closely related, according to foreign media magazine aerial work machinery "AccessInternational" reports,Steel crane statistics are shown in Table 1. Economy is more developed, The greater the demand, and the greater the demand per unit of GDP. From Table 1 and Table 2 shows that the demand of the trade gap with developed countries or regions. Compared with developed countries and regions, China is not only the demand per unit of GDP is small, but the demand per unit of GDP and GDP ratio is also low, indicating that the market demand for aerial work only with the economies of scale, but also with the degree of economic development, This just shows aerial vehicles in China has a very broad prospects for development.
High security, high operating efficiency and high environmental adaptability
Aerial vehicles as an engineering vehicle, its particularity is: First manned aerial, its operational safety requirements than general engineering vehicles is high, the so-called high security; Second, the non-structural construction workplace environment, that is, its unpredictable and changing work environment, thus requiring a high adaptability to the environment; three is often used for its repair work, and more for outdoor or field operations, operating environment conditions are poor, so they requested that it has a high operating efficiency.
Cities with the engineering vehicle characteristics
Currently our users is concentrated in the city or town,hoist gantry crane and its working conditions than the general transport vehicles and construction machinery better, but mainly for the back-end infrastructure and routine maintenance and repair of its service life expectations are high, therefore, requires General construction vehicles having different characteristics requirements: Multifunction; appearance, coating color construction vehicles have both athletic, but also have cars vitality, and to maintain long-term. Flexible; may be appropriate to load cargo, such as job with the tools, equipment, materials, and so on. Can carry operations team personnel, such as the power industry 4-6 people, 3-5 people street industry, with features and construction vehicles car comfort.
Personalized, differentiated demand
As versatile aerial vehicles, involving industry and more jobs with different contents for each industry,
According to incomplete statistics, China's annual urban building maintenance only due to the use of the aerial gondola fall occurs, has led to nearly 5,000 deaths, while in developed countries, such practices have basically disappeared, replaced by aerial vehicles. Therefore, the future maintenance of the extensive use of urban architecture aerial vehicles.
Equipment leasing industry in developed countries is the main force aerial vehicles procurement, accounting for 80% of total demand, while China is almost zero, the user must use to buy. With China's construction equipment rental industry, users do not have to invest in can be rented, will inevitably lead to a large number of additions to the leasing industry,eot crane therefore leasing industry will be aerial vehicles market demand growth potential of the industry.
The foregoing analysis, referring to the situation in developed countries, China's demand for high-altitude operation truck realities and needs of the potential is very small compared to that in the next 20-30 years, China aerial vehicles will maintain a sustained rapid pace of product development. By 2015, the ownership will be 10,000 units in 2008 increased to at least 40,000 or so units, and about 10% -20% annual growth pace.
2013年8月22日星期四
China has become an important global crane market
With the Chinese economy and the rapid development of infrastructure, led the Chinese crane market's rapid development, China has become an important global crane market. The rapid development of
hoist crane , lifting equipment is stimulated by market boom, lifting equipment development to bring more power source.
According to the analysis, in recent years, especially in areas of the energy industry to develop, led the Chinese crane industry's continued healthy development, it is driven by a large number of extremely powerful lifting equipment construction enterprises. China lifting industry has emerged a group with considerable scale and strong competitive large lifting equipment companies; these lifting equipment manufacturing enterprises, but also with Chinese crane market, overseas expansion into foreign markets is also positive.
Lifting equipment industry and the eot crane industry can be said that mutual promotion and mutual development. China lifting equipment in the field of rapid development, but also for the Chinese crane industry has supported the development. At present the domestic crane market, brings together almost all of the world-renowned manufacturers. Many foreign brands have a large crane assembly manufacturing base in the country to build, it can be said is also very optimistic about the strength of domestic enterprises lifting equipment.
Large foreign lifting equipment to seize the Chinese market, coupled with the escalating demand for Chinese users, for local businesses and lifting equipment lifting machinery enterprises, it is an opportunity and a challenge. There is competition, will progress.jib crane Local enterprises in response to the lifting equipment and lifting equipment market changes in the products and technologies are also constantly innovate.
According to the analysis, in recent years, especially in areas of the energy industry to develop, led the Chinese crane industry's continued healthy development, it is driven by a large number of extremely powerful lifting equipment construction enterprises. China lifting industry has emerged a group with considerable scale and strong competitive large lifting equipment companies; these lifting equipment manufacturing enterprises, but also with Chinese crane market, overseas expansion into foreign markets is also positive.
Lifting equipment industry and the eot crane industry can be said that mutual promotion and mutual development. China lifting equipment in the field of rapid development, but also for the Chinese crane industry has supported the development. At present the domestic crane market, brings together almost all of the world-renowned manufacturers. Many foreign brands have a large crane assembly manufacturing base in the country to build, it can be said is also very optimistic about the strength of domestic enterprises lifting equipment.
Large foreign lifting equipment to seize the Chinese market, coupled with the escalating demand for Chinese users, for local businesses and lifting equipment lifting machinery enterprises, it is an opportunity and a challenge. There is competition, will progress.jib crane Local enterprises in response to the lifting equipment and lifting equipment market changes in the products and technologies are also constantly innovate.
Refinement is a focus of future development direction of the crane
Although China has become the world's largest
eot crane market, the largest exporter of small tonnage crane products, but the large tonnage crane competitiveness is still insufficient, engines, hydraulic parts as well as the development of electronic control system is still hindered. For large tonnage technological breakthroughs more hopes on technical strength of the domestic large enterprises, because of the large-tonnage products are technology-oriented small and medium enterprises fear the lack of technical and financial support precipitation.
With the national electric power, petrochemical, steel, transportation and other infrastructure construction reached a climax, the domestic market with the rapid expansion of the crane. Crane has become the trend of large irreversible fact. In addition, companies can do a good job marketing the gantry crane coordination, to ensure performance of the contract, to achieve product delivery schedule, set up overseas repair outlets, service on the export of products to increase efforts to improve the recognition of overseas customers, and constantly improve the sales process , with services to boost market share gains.
Currently, the industry segment has been the early clues, Refinement is a key direction for future development. Therefore, for customers in different areas to provide specialized products, to the maximum extent to meet their specific needs has become the most brands next stage of development focus.bridge gantry crane Not only is the lifting industry is moving towards a customer-centric marketing concept of change, the whole construction machinery industry are constantly increasing sales concepts, change the development model.
With the national electric power, petrochemical, steel, transportation and other infrastructure construction reached a climax, the domestic market with the rapid expansion of the crane. Crane has become the trend of large irreversible fact. In addition, companies can do a good job marketing the gantry crane coordination, to ensure performance of the contract, to achieve product delivery schedule, set up overseas repair outlets, service on the export of products to increase efforts to improve the recognition of overseas customers, and constantly improve the sales process , with services to boost market share gains.
Currently, the industry segment has been the early clues, Refinement is a key direction for future development. Therefore, for customers in different areas to provide specialized products, to the maximum extent to meet their specific needs has become the most brands next stage of development focus.bridge gantry crane Not only is the lifting industry is moving towards a customer-centric marketing concept of change, the whole construction machinery industry are constantly increasing sales concepts, change the development model.
Chinese tower crane favorable factors and constraints coexist
In recent years, China tower crane export volume increased, the quality has been improved. But its development is still a lot of constraints, in particular those affecting China tower
hoist gantry crane for further export. Chinese tower crane exports significantly favorable factors: one is the Chinese tower crane short lead times, low price; hand in recent years, China tower crane export development quickly; third aspect is that China has strengthened lifting machinery industry development strategy and the overall planning; Fourth, some tower crane manufacturers have formed the core competitiveness of enterprises; Fifth, accelerate the establishment of industry self-regulatory organization coordinating mechanism. Strengthen the product into the "mainstream market" certification.
Chinese tower crane development has two constraints:
A: Chinese tower Steel crane in brand building requires further efforts, in particular with international companies compared to similar products there are still some gaps.
Two: service issues. Chinese tower crane training local agents of multinational enterprises and users obviously inadequate, some less able to service agents. Agents as a bridge connecting manufacturers and users, to promote the prosperity and development of the tower jib crane industry plays an extremely important role and should actively promote and improve after-sales service system agents.
Three: people-oriented Chinese enterprises safety awareness, service consciousness lags far behind developed countries. Some warning signs pasted improper location, not a security warning; various protective facility design and set up either poor, unsightly appearance.bridge crane Such problems are often caused because of safety consciousness, and it does not require too much cost solution.
Chinese tower crane development has two constraints:
A: Chinese tower Steel crane in brand building requires further efforts, in particular with international companies compared to similar products there are still some gaps.
Two: service issues. Chinese tower crane training local agents of multinational enterprises and users obviously inadequate, some less able to service agents. Agents as a bridge connecting manufacturers and users, to promote the prosperity and development of the tower jib crane industry plays an extremely important role and should actively promote and improve after-sales service system agents.
Three: people-oriented Chinese enterprises safety awareness, service consciousness lags far behind developed countries. Some warning signs pasted improper location, not a security warning; various protective facility design and set up either poor, unsightly appearance.bridge crane Such problems are often caused because of safety consciousness, and it does not require too much cost solution.
Lifting machinery market is facing a severe test
Universal
overhead bridge crane is currently facing a severe test of the market, production and management more difficult. Since March 2011 until the end of July 2013, China's construction machinery industry has been going on for 27 months running sluggish. This habit over the years grew 30 percent of the industry, some companies grew 100% is also not uncommon in the industry.
In recent years, with the national industrial policy adjustment and industry to accelerate the pace of opening up, construction machinery industry has become no policy barriers perfectly competitive industry, general gantry bridge crane rapid rise of private enterprises within the industry, the international construction machinery giant rapid penetration, the internationally renowned almost all construction machinery company in China to establish wholly-owned, joint ventures, industry competition pattern changed radically.
Compared with foreign enterprises still have a large gap, the competitiveness particularly urgent need to improve international competitiveness, especially in the international construction machinery market, the competitiveness of the very weak, which is our current universal gantry hoist crane construction machinery development pole disproportionate.
Gantry crane in the general market growth down in the case, construction machinery enterprises in order to achieve sustainable and healthy development, we must shift from scale growth of intensive development, hard skills, speed upgrades, really put the focus to enhance the development of quality and efficiency.
In recent years, with the national industrial policy adjustment and industry to accelerate the pace of opening up, construction machinery industry has become no policy barriers perfectly competitive industry, general gantry bridge crane rapid rise of private enterprises within the industry, the international construction machinery giant rapid penetration, the internationally renowned almost all construction machinery company in China to establish wholly-owned, joint ventures, industry competition pattern changed radically.
Compared with foreign enterprises still have a large gap, the competitiveness particularly urgent need to improve international competitiveness, especially in the international construction machinery market, the competitiveness of the very weak, which is our current universal gantry hoist crane construction machinery development pole disproportionate.
Gantry crane in the general market growth down in the case, construction machinery enterprises in order to achieve sustainable and healthy development, we must shift from scale growth of intensive development, hard skills, speed upgrades, really put the focus to enhance the development of quality and efficiency.
Gantry crane linkage console operating instructions
bridge gantry crane and other mechanical transmission parts mounted on the upper part of the hood enclosure, the drive mechanism is divided into single lever linkage control mechanism, grab double handle control mechanism, main and auxiliary hook double handle control mechanism, single handle and single handle control mechanism level control mechanism. Lever movement spur gears are used camshaft. Controllers are vertical layout camshaft, transmission part of the pivot bearing all in order to reduce the power loss.
Gantry crane joystick is spherical. To avoid vibration and accidental collision because the overhead gantry crane control mechanism malfunction, the handle with zero self-locking devices. Composed by the two hemispheres of the handle up and down, only to mention Woxia hemisphere can leave the handle zero position actuator.
Leave the zero position when the handle can loosen the lower hemisphere will continue to operate. If you often use reverse parking brake, feel manipulated inconvenience hoist gantry crane, can be re-instituted the lower hemisphere handle clockwise, so that the lower hemisphere fixed at lifting position, so zero self-locking device does not work. Six agencies under the rear handle with the zero-touch self-locking device.
Gantry crane positioning ratchet 3 mm thick steel plate stamping of, and after treatment to obtain a higher wear resistance. There are six on the red ratchet positioning holes, positioning screws into the holes in different positions, you can determine the number of stalls joystick. In the left and six-speed range, the number of stalls can be arbitrarily selected. Positioning ratchet spring force can be adjusted, so that you can depending on the circumstances, in the sub-file clear premise,Steel crane adjust the ratchet spring force so that the handle control force within the permitted range.
Gantry crane joystick is spherical. To avoid vibration and accidental collision because the overhead gantry crane control mechanism malfunction, the handle with zero self-locking devices. Composed by the two hemispheres of the handle up and down, only to mention Woxia hemisphere can leave the handle zero position actuator.
Leave the zero position when the handle can loosen the lower hemisphere will continue to operate. If you often use reverse parking brake, feel manipulated inconvenience hoist gantry crane, can be re-instituted the lower hemisphere handle clockwise, so that the lower hemisphere fixed at lifting position, so zero self-locking device does not work. Six agencies under the rear handle with the zero-touch self-locking device.
Gantry crane positioning ratchet 3 mm thick steel plate stamping of, and after treatment to obtain a higher wear resistance. There are six on the red ratchet positioning holes, positioning screws into the holes in different positions, you can determine the number of stalls joystick. In the left and six-speed range, the number of stalls can be arbitrarily selected. Positioning ratchet spring force can be adjusted, so that you can depending on the circumstances, in the sub-file clear premise,Steel crane adjust the ratchet spring force so that the handle control force within the permitted range.
Large crane erection Technical Guidelines for Safety instructionseot crane
Universal gantry
eot crane because they belong to large equipment, so installation should be done by erecting a qualified professional with the installation department is responsible for. Erection of the installation process, to observe the following safety technology rules:
1) Universal gantry crane erected before the commanding officers of all personnel should participate in erecting details lifting method, lifting step, command signal, precautions and individual responsibility should be borne by the members.
2) Crane Erection area, without adequate lighting equipment is prohibited at night erection work.
3) prohibits any person together with the gantry crane hoisting, nor along the rope or pulley drop.
4) In the erection area, to ensure that persons charged shall not touch bare.
5) Universal gantry crane lifting the erection process is prohibited under the crane to stay in or pass. With the erection unrelated persons are not allowed to enter the set area.
6) To prepare the blackout prevention efforts and ensure effective lifting braking system.
7) In order to check whether the work is completely normal erection, should be first crane lifting 100 to 200 mm from the ground, stay for some time, carefully inspect all lifting equipment and lifting tools have all the right places, is firmly tied, cranes whether the center of gravity right so that only parts of correct recognition only after the formal erection of work to do.
8) Universal gantry bridge crane installed under the crossbar when the first put to the track, and then the legs and lower beams fixed cable connection and with the wind, and then lifting the leg of the main beams, integrally connected with bolts finally lifting trolley. For the main beam length greater than 35m, you need to be bolted into the ground then lifting the whole.
1) Universal gantry crane erected before the commanding officers of all personnel should participate in erecting details lifting method, lifting step, command signal, precautions and individual responsibility should be borne by the members.
2) Crane Erection area, without adequate lighting equipment is prohibited at night erection work.
3) prohibits any person together with the gantry crane hoisting, nor along the rope or pulley drop.
4) In the erection area, to ensure that persons charged shall not touch bare.
5) Universal gantry crane lifting the erection process is prohibited under the crane to stay in or pass. With the erection unrelated persons are not allowed to enter the set area.
6) To prepare the blackout prevention efforts and ensure effective lifting braking system.
7) In order to check whether the work is completely normal erection, should be first crane lifting 100 to 200 mm from the ground, stay for some time, carefully inspect all lifting equipment and lifting tools have all the right places, is firmly tied, cranes whether the center of gravity right so that only parts of correct recognition only after the formal erection of work to do.
8) Universal gantry bridge crane installed under the crossbar when the first put to the track, and then the legs and lower beams fixed cable connection and with the wind, and then lifting the leg of the main beams, integrally connected with bolts finally lifting trolley. For the main beam length greater than 35m, you need to be bolted into the ground then lifting the whole.
2013年8月21日星期三
Crane type of work
Crane types of work: refers to how busy working crane and loading degree of change parameters.
How busy work, the bridge gantry crane terms, this means the total time in a year, the actual operation of the crane and the total number of hours when the ratio of the number; against institutions, it refers to an institution operating hours within a year the ratio of the total number of hours. A work cycle of the crane, the agency running time percentage, called the agency's duty cycle, expressed by JC. Changes in load level, according to the design rated capacity of the crane in the actual operation, the crane lifting loads are often less than the rated capacity. The degree of this change in load lifting capacity utilization factor k. k = crane year's actual average starting weight / crane's rated capacity.
According to the work of the crane and the load busy the degree of change, the type of work the crane usually divided into: light, intermediate, heavy and extra heavy duty grade four levels.
The type of work the crane and lifting capacity are two different concepts, lifting capacity, is not necessarily a weight class, from the weight of a small, not necessarily light level. Such as hydropower eot crane lifting capacity with hundreds of tons, but not much chance to use only the installation unit, used only when repairing the unit, and the remaining time stop there, so even though from the weight of large, but still belongs to light level . Another example is the use of the station yard gantry crane, although from the weight of small, but very busy, are heavy duty type.
How busy work, the bridge gantry crane terms, this means the total time in a year, the actual operation of the crane and the total number of hours when the ratio of the number; against institutions, it refers to an institution operating hours within a year the ratio of the total number of hours. A work cycle of the crane, the agency running time percentage, called the agency's duty cycle, expressed by JC. Changes in load level, according to the design rated capacity of the crane in the actual operation, the crane lifting loads are often less than the rated capacity. The degree of this change in load lifting capacity utilization factor k. k = crane year's actual average starting weight / crane's rated capacity.
According to the work of the crane and the load busy the degree of change, the type of work the crane usually divided into: light, intermediate, heavy and extra heavy duty grade four levels.
The type of work the crane and lifting capacity are two different concepts, lifting capacity, is not necessarily a weight class, from the weight of a small, not necessarily light level. Such as hydropower eot crane lifting capacity with hundreds of tons, but not much chance to use only the installation unit, used only when repairing the unit, and the remaining time stop there, so even though from the weight of large, but still belongs to light level . Another example is the use of the station yard gantry crane, although from the weight of small, but very busy, are heavy duty type.
Several major categories of cranes
Cranes different ways depending on the installation can be divided into
1, truck cranes
Truck Steel crane the crane mounted on the chassis of the vehicle on the general or special low disk performance is equivalent to the total weight of the same vehicle truck, road vehicles comply with the technical requirements, which can be on the road in all kinds of passage. Such cranes generally available, and get off two control room, legs stretched out operations necessary to maintain stability. From the weight of a large range, from 8 tons to 1,000 tons, the chassis number of axles, from 2 to 10. Is the largest output, the most widely used type of crane.
2, the tire crane
Lifting part of the installation in a special crane chassis of a pneumatic tire. Combined with an engine on and off, speed is generally not more than 30KM / H, vehicle width is wider, it should not travel long distances on the highway. Has no legs and hoists with lifting function for garages, docks, construction sites and other places with limited movement distance hoist operation.
3, rough terrain cranes
Developed in the 1970s as a crane whose lifting crane tires similar function can also be performed without legs and hoists with lifting. The difference is the form and structure of the chassis chassis structure by a unique brought improved running performance. Such overhead gantry crane are mounted on the chassis engine, the chassis has two axles and four large diameter off-road tread tires. Four wheel drive wheels and steering wheel are when the muddy uneven transfer station on the site, the four wheels to transmit power, that four-wheel drive to improve through the muddy ground and uneven road capabilities. When on a flat surface at a faster rate when traveling with only two wheels on the front axle or rear axle drive to reduce energy consumption. Random file of the crane, with said four-wheel drive 4 × 4, 4 × 2 represents 4 there are two axle wheels are wheels. The models suitable for small venue operations. Enabling continuous infinitely variable, in the case of road resistance mutation does not turn off the engine, and thus greatly facilitates the driver's operation. The rough terrain cranes can be a performance extended, powerful and flexible tire cranes.
4, all-terrain crane
Is a combined truck cranes and rough terrain cranes characteristics of high-performance products. It can not only transfer as fast as cranes, long distance running, but also to meet in a narrow and bumpy or muddy pitch on the job requirements, namely traveling speed, multi-axle drive, all-wheel steering, three kinds of steering mode from the ground gap, high climbing ability, you can do leg lifting and other functions, is a very promising product. But the price is higher, use and maintenance require a higher level.
5, special cranes
To accomplish a specific task and the development of special cranes.bridge crane For example: for the mechanized implement tactical and technical safeguards used, mounted on armored vehicles in off-road vehicle or lifting wheel rescue vehicle; to deal with road traffic accidents wrecker, etc., fall into this category.
1, truck cranes
Truck Steel crane the crane mounted on the chassis of the vehicle on the general or special low disk performance is equivalent to the total weight of the same vehicle truck, road vehicles comply with the technical requirements, which can be on the road in all kinds of passage. Such cranes generally available, and get off two control room, legs stretched out operations necessary to maintain stability. From the weight of a large range, from 8 tons to 1,000 tons, the chassis number of axles, from 2 to 10. Is the largest output, the most widely used type of crane.
2, the tire crane
Lifting part of the installation in a special crane chassis of a pneumatic tire. Combined with an engine on and off, speed is generally not more than 30KM / H, vehicle width is wider, it should not travel long distances on the highway. Has no legs and hoists with lifting function for garages, docks, construction sites and other places with limited movement distance hoist operation.
3, rough terrain cranes
Developed in the 1970s as a crane whose lifting crane tires similar function can also be performed without legs and hoists with lifting. The difference is the form and structure of the chassis chassis structure by a unique brought improved running performance. Such overhead gantry crane are mounted on the chassis engine, the chassis has two axles and four large diameter off-road tread tires. Four wheel drive wheels and steering wheel are when the muddy uneven transfer station on the site, the four wheels to transmit power, that four-wheel drive to improve through the muddy ground and uneven road capabilities. When on a flat surface at a faster rate when traveling with only two wheels on the front axle or rear axle drive to reduce energy consumption. Random file of the crane, with said four-wheel drive 4 × 4, 4 × 2 represents 4 there are two axle wheels are wheels. The models suitable for small venue operations. Enabling continuous infinitely variable, in the case of road resistance mutation does not turn off the engine, and thus greatly facilitates the driver's operation. The rough terrain cranes can be a performance extended, powerful and flexible tire cranes.
4, all-terrain crane
Is a combined truck cranes and rough terrain cranes characteristics of high-performance products. It can not only transfer as fast as cranes, long distance running, but also to meet in a narrow and bumpy or muddy pitch on the job requirements, namely traveling speed, multi-axle drive, all-wheel steering, three kinds of steering mode from the ground gap, high climbing ability, you can do leg lifting and other functions, is a very promising product. But the price is higher, use and maintenance require a higher level.
5, special cranes
To accomplish a specific task and the development of special cranes.bridge crane For example: for the mechanized implement tactical and technical safeguards used, mounted on armored vehicles in off-road vehicle or lifting wheel rescue vehicle; to deal with road traffic accidents wrecker, etc., fall into this category.
Crane technical operation
A crane workplaces should be smooth and firm, you should check whether it is the foundation endurance requirements. Operators should be familiar with the work environment, check the mechanical work area, turning space accessibility and other insecurity.
Two bridge gantry crane at work should be carefully checked before each part, limit switches, safety devices, braking performance is sensitive, and the empty load test run, confirm the normal behind the prospective work.
Third, before lifting operations, the operator should be aware of lifting operations programs and related issues and unify their thinking and commanding officers. The operator must closely cooperate with the commanding officers, commanding officers in strict accordance with the signals to operate. Command signal unclear if found or an error, the right to refuse to perform. Other staff are issued for danger signals, but also should pay attention to. Warning whistle before crane operation.
Fourth, non- gantry crane overload operation, oblique hanging and pull the hanging. Allowed to be hanging heavy weight lifting unclear. Prohibited or condensate lifting underground burial in the ground or objects on the device.
Fifth, in the job, it was prohibited under heavy lifting, boom next strictly prohibited.
Six, manned strictly prohibited hook, lifting objects over someone is strictly prohibited.
Seven, crane operation, maintenance and adjustment work is strictly prohibited personnel.
Eight, when lifting heavy banding firm. Prohibit stacked or hung on a sporadic heavy objects. Place heavy objects on the situation to the attention of the ground, to prevent tilting skew. Sporadic materials and articles must hoists or rope lashing firmly before lifting. Lifting explosive and other dangerous goods, safety measures must be taken.
Nine, lifting weights, weight hook vertically through the center of gravity should be. First trial cranes, heavy lifting from the ground 200 mm should be stopped and checked; crane stability, braking reliability, weight balance, lashing the firmness. Heavy lifting, try to avoid decentralization boom, must be put in, the first weight down, and put the boom.
Ten, as with dual-lift crane, the two cars arm should maintain a certain distance (to prevent head collide and coincide with the center of gravity caused by lifting emphasis) have special unity of command, slowly, so closely coordinated action, weight should not exceed two cranes from the weight of the sum of the nominal 75% less load on each crane bear its nominal weight of 80%.
Eleven, heavy lifting and rotation, the speed should be uniform, action should be smooth. Heavy falls, must slow light up. Prevention of sudden braking. Diaoqi weight prohibiting the free fall. Job, pay close attention to the operating state of the hook and rope to let roll back bar and so on.
Twelve, rotary or landing shall not reverse lever is not completely stopped before the action. Strictly prohibited to use way to fight anti-car brake achieve the purpose.
Thirteen, lifting operations, in case of emergency, should promptly take the necessary measures.
Fourteen, job, arm elevation shall not exceed the maximum original requirements. If no data are available at the maximum over 75 degrees is appropriate. Under certain extent when lifting heavy objects, such as exceeding the rated total weight, rotation speed should be slow. Heavy lifting arm and arm elevation large, heavy objects should be first unloaded on the ground, and keep rope taut, the lower arm and then decoupled. Except in special cases, try not to use 30. The following angles.
Fifteen, jib crane downtime or rest, should heavy fall to the ground, not on the hook hanging heavy objects.
Sixteen, rain and snow work, in order to prevent moisture brake failure, particular emphasis should be suspended through a trial to prove reliable brakes only after work. Rain, snow-fall more slowly.
Seventeen, outdoor operations, heavy rain, fog, and 6 and 6 above winds affect safety, they should stop operation.
Two bridge gantry crane at work should be carefully checked before each part, limit switches, safety devices, braking performance is sensitive, and the empty load test run, confirm the normal behind the prospective work.
Third, before lifting operations, the operator should be aware of lifting operations programs and related issues and unify their thinking and commanding officers. The operator must closely cooperate with the commanding officers, commanding officers in strict accordance with the signals to operate. Command signal unclear if found or an error, the right to refuse to perform. Other staff are issued for danger signals, but also should pay attention to. Warning whistle before crane operation.
Fourth, non- gantry crane overload operation, oblique hanging and pull the hanging. Allowed to be hanging heavy weight lifting unclear. Prohibited or condensate lifting underground burial in the ground or objects on the device.
Fifth, in the job, it was prohibited under heavy lifting, boom next strictly prohibited.
Six, manned strictly prohibited hook, lifting objects over someone is strictly prohibited.
Seven, crane operation, maintenance and adjustment work is strictly prohibited personnel.
Eight, when lifting heavy banding firm. Prohibit stacked or hung on a sporadic heavy objects. Place heavy objects on the situation to the attention of the ground, to prevent tilting skew. Sporadic materials and articles must hoists or rope lashing firmly before lifting. Lifting explosive and other dangerous goods, safety measures must be taken.
Nine, lifting weights, weight hook vertically through the center of gravity should be. First trial cranes, heavy lifting from the ground 200 mm should be stopped and checked; crane stability, braking reliability, weight balance, lashing the firmness. Heavy lifting, try to avoid decentralization boom, must be put in, the first weight down, and put the boom.
Ten, as with dual-lift crane, the two cars arm should maintain a certain distance (to prevent head collide and coincide with the center of gravity caused by lifting emphasis) have special unity of command, slowly, so closely coordinated action, weight should not exceed two cranes from the weight of the sum of the nominal 75% less load on each crane bear its nominal weight of 80%.
Eleven, heavy lifting and rotation, the speed should be uniform, action should be smooth. Heavy falls, must slow light up. Prevention of sudden braking. Diaoqi weight prohibiting the free fall. Job, pay close attention to the operating state of the hook and rope to let roll back bar and so on.
Twelve, rotary or landing shall not reverse lever is not completely stopped before the action. Strictly prohibited to use way to fight anti-car brake achieve the purpose.
Thirteen, lifting operations, in case of emergency, should promptly take the necessary measures.
Fourteen, job, arm elevation shall not exceed the maximum original requirements. If no data are available at the maximum over 75 degrees is appropriate. Under certain extent when lifting heavy objects, such as exceeding the rated total weight, rotation speed should be slow. Heavy lifting arm and arm elevation large, heavy objects should be first unloaded on the ground, and keep rope taut, the lower arm and then decoupled. Except in special cases, try not to use 30. The following angles.
Fifteen, jib crane downtime or rest, should heavy fall to the ground, not on the hook hanging heavy objects.
Sixteen, rain and snow work, in order to prevent moisture brake failure, particular emphasis should be suspended through a trial to prove reliable brakes only after work. Rain, snow-fall more slowly.
Seventeen, outdoor operations, heavy rain, fog, and 6 and 6 above winds affect safety, they should stop operation.
The structure of the crane truck mounted crane
Truck
overhead gantry crane structure is divided into: 1, crane boom and telescopic mechanism; 2, luffing structure; 3, the operating room and operating structure: 4, rotary structure; 5, turntable; 6, hoisting mechanism; 7, chassis ; 8 legs; 9, slewing ring.
Truck crane jib Category:
One, given the long arm truck mounted crane lattice boom with a fixed length, mostly for small mechanical transmission cranes, used car universal chassis, all the power is supplied by the vehicle engine, the engine does not separate. Boom angles and steel plate welded into use, was folding arm-shaped, in order to increase lifting amplitude.
2, then the long arm of the bridge gantry crane truck mounted crane is truss structure, composed by a number of arm, sub-base of the arm, the top arm and insert the arm. As needed, to change the boom length shutdown. Since truss force is good, the frontal area is small, light weight, it is the large-tonnage truck mounted crane unique structure.
3, telescopic hydraulic crane truck mounted hoist gantry crane structure is characterized by a box-shaped cross-section of multi-section telescopic boom from each other, the use of arms mounted on the hydraulic cylinder can be simultaneously or by-section telescopic or retract fully retracted when , the shortest arm, you can have the largest weight: fully extended, the arm up, you can have a maximum lifting height or working radius. Such products has developed into a major center of the tonnage truck mounted crane species.
Truck crane jib Category:
One, given the long arm truck mounted crane lattice boom with a fixed length, mostly for small mechanical transmission cranes, used car universal chassis, all the power is supplied by the vehicle engine, the engine does not separate. Boom angles and steel plate welded into use, was folding arm-shaped, in order to increase lifting amplitude.
2, then the long arm of the bridge gantry crane truck mounted crane is truss structure, composed by a number of arm, sub-base of the arm, the top arm and insert the arm. As needed, to change the boom length shutdown. Since truss force is good, the frontal area is small, light weight, it is the large-tonnage truck mounted crane unique structure.
3, telescopic hydraulic crane truck mounted hoist gantry crane structure is characterized by a box-shaped cross-section of multi-section telescopic boom from each other, the use of arms mounted on the hydraulic cylinder can be simultaneously or by-section telescopic or retract fully retracted when , the shortest arm, you can have the largest weight: fully extended, the arm up, you can have a maximum lifting height or working radius. Such products has developed into a major center of the tonnage truck mounted crane species.
What crane safety device
To ensure safe and reliable lifting operations,
jib crane equipped with a better safety devices in order to unexpected circumstances, play a protective parts or alert the operator, and thus play a security role.
A hydraulic system, the pressure relief valve: inhibit loop abnormally high pressure in order to prevent damage to the hydraulic pumps and motors, and to prevent is overloaded.
2 luffing jib safety device: When the unexpected accident, boom luffing cylinder loop pressure hose or pipe burst or cut off, the hydraulic circuit balancing valves on the work, lock cylinder lower chamber from work oil, the boom will not fall, thereby ensuring the safety of operation.
3 telescopic eot crane safety device: When unexpected accidents, telescopic boom cylinder circuit of the high-pressure hose or pipe burst or cut off, the hydraulic circuit balancing valves on the work, lock cylinder lower chamber from the working oil, the suspension will retract themselves, thus ensuring the safety of operation.
4 height limit device: hook up the required height to rise after touching limit hammer, turn the trip switch, "over round" indicator light that is bright, while cutting off the hook lifting, boom stretched out, hanging Arm volts to the operation of such action to ensure safety. Then just manipulate the hook down, boom boom retracted or looked up (to the Security side operation), etc. handle, lift the weight limit constraint, the operation returns to normal. For special occasions, such as still need to make a small amount of over-winding operation, press the release button on the meter box, this time limit will be lifted role, but this time the operation must be very careful to prevent accidents.
5 leg locking device: When unexpected accident occurred, leading to the leg vertical cylinder hoses or tubing rupture or cutting, the hydraulic system can be disabled with a two-way hydraulic lock cylinder two leg blocking pressure oil chamber, the branch Notations or throw the legs,bridge crane thereby ensuring the safety of the lifting operation.
6 from the weight indicator: Starting weight indicator is set in the basic arm together side (ie, the right side of the cab), the operator sitting in the control room can be clearly observed, can accurately indicate the boom elevation and the corresponding conditions allow cranes rated capacity.
7 Lifting Characteristics Table: Set in the control room on the front side of the lower wall, the table lists the various arm lengths and a variety of work rate and the nominal weight lifting height for operation inspection. Lifting operation, must not exceed the values specified in the table. To ensure safe and reliable lifting operations, Steel crane equipped with a better safety devices in order to unexpected circumstances, play a protective parts or alert the operator, and thus play a security role.
A hydraulic system, the pressure relief valve: inhibit loop abnormally high pressure in order to prevent damage to the hydraulic pumps and motors, and to prevent is overloaded.
2 luffing jib safety device: When the unexpected accident, boom luffing cylinder loop pressure hose or pipe burst or cut off, the hydraulic circuit balancing valves on the work, lock cylinder lower chamber from work oil, the boom will not fall, thereby ensuring the safety of operation.
3 telescopic eot crane safety device: When unexpected accidents, telescopic boom cylinder circuit of the high-pressure hose or pipe burst or cut off, the hydraulic circuit balancing valves on the work, lock cylinder lower chamber from the working oil, the suspension will retract themselves, thus ensuring the safety of operation.
4 height limit device: hook up the required height to rise after touching limit hammer, turn the trip switch, "over round" indicator light that is bright, while cutting off the hook lifting, boom stretched out, hanging Arm volts to the operation of such action to ensure safety. Then just manipulate the hook down, boom boom retracted or looked up (to the Security side operation), etc. handle, lift the weight limit constraint, the operation returns to normal. For special occasions, such as still need to make a small amount of over-winding operation, press the release button on the meter box, this time limit will be lifted role, but this time the operation must be very careful to prevent accidents.
5 leg locking device: When unexpected accident occurred, leading to the leg vertical cylinder hoses or tubing rupture or cutting, the hydraulic system can be disabled with a two-way hydraulic lock cylinder two leg blocking pressure oil chamber, the branch Notations or throw the legs,bridge crane thereby ensuring the safety of the lifting operation.
6 from the weight indicator: Starting weight indicator is set in the basic arm together side (ie, the right side of the cab), the operator sitting in the control room can be clearly observed, can accurately indicate the boom elevation and the corresponding conditions allow cranes rated capacity.
7 Lifting Characteristics Table: Set in the control room on the front side of the lower wall, the table lists the various arm lengths and a variety of work rate and the nominal weight lifting height for operation inspection. Lifting operation, must not exceed the values specified in the table. To ensure safe and reliable lifting operations, Steel crane equipped with a better safety devices in order to unexpected circumstances, play a protective parts or alert the operator, and thus play a security role.
Crane safety rules
A crane driver
1.1 crane drivers specialized training, passing the examination by the relevant departments, issued certificate shall be allowed to induction operation is prohibited undocumented workers operating lifting equipment.
1.2 for lifting operations before the hoist gantry crane driver must make sure that all devices are working properly, wire rope safety compliance, formulation, hydraulic and safety devices are complete, reliable, sensitive, non-working parts of the crane sick to run.
1.3 crane driver must closely cooperate with the commanding officers, to obey the command signal commanding officer. Before the operation must be honking. Command signal unclear if found or an error, the driver the right to refuse; work, drivers for any person to issue an emergency stop signal, you must immediately obey, to be eliminate unsafe factors in order to continue working.
1.4 crane lifting load only vertically, drag prohibited not load from the ground, to avoid side load.
1.5 During full load lifting bridge gantry crane , disabled simultaneously with two or more operating movements. Crane jib rotation angle should not exceed about 45 °, is strictly prohibited oblique hanging, hanging and fast pull down. Non-hanging pull objects buried in the ground is forbidden to force hanging pull suction affixed to the floor area of larger objects.
1.6 crane working near energized lines, they should maintain a safe distance with the maximum turning range, allow the closest distance transmission lines below, rain and fog weather safety distance should be increased to 1.5 times. Crane through the transmission line, it must be jib down.
1.7 Do not overload the crane use, if you use two cranes while lifting a heavy object, someone must obey the unified command, the two planes landing speed to maintain equal, the object's weight must not exceed two machines allowed total weight of 75%. Lashing slings, pay attention to the load distribution, load-sharing per vehicle must not exceed the allowed maximum weight of 80%.
1.8 cranes at work, between the hook and the pulley should maintain a certain distance, to prevent over-limit the cable winch or crane to pull off back flip. Luffing the jib fully extended to the maximum elevation and minimize the hook position, the winch wire rope on the drum should be kept for at least three turns or more.
1.9 Boom elevation work not less than 30 °, crane lifting a load should be avoided in case of luffing jib, crane load absolute prohibition on converting lever before stopping sound.
1.10 cranes at work is prohibited for maintenance and adjustment.
1.11 stoppages or rest, hanging objects will be allowed to hang in the air.
1.12 After work, hook and boom should be placed under secure position, and put all the control handle to neutral position.
Two commanding officers
2.1 Command signal to advance to the hoist crane driver made clear, in case of operation command signal is seen in clear, shall be provided transit assistant, accurate signal transmission.
2.2 Command gestures should be clear, the signal must be clear, are not allowed to wear gloves conductor.
2.3 lifting objects, you should first check whether the firm tied, ropes through angular, fast liner should be located at the mouth, hanging position the center of gravity must be accurate, and not the object after the force generated in the twisted, curved, Shen, oblique and so on.
2.4 In the hanging objects fixed in place before the crane driver shall leave their jobs, are not allowed in the rigging or lifting objects floating force the case to interrupt your work.
2.5 when the crane driver was rejected when lifting heavy objects, commanding officers should take measures to try to alleviate the heavy load cranes, crane overload operation directed strengthen prohibited.
1.1 crane drivers specialized training, passing the examination by the relevant departments, issued certificate shall be allowed to induction operation is prohibited undocumented workers operating lifting equipment.
1.2 for lifting operations before the hoist gantry crane driver must make sure that all devices are working properly, wire rope safety compliance, formulation, hydraulic and safety devices are complete, reliable, sensitive, non-working parts of the crane sick to run.
1.3 crane driver must closely cooperate with the commanding officers, to obey the command signal commanding officer. Before the operation must be honking. Command signal unclear if found or an error, the driver the right to refuse; work, drivers for any person to issue an emergency stop signal, you must immediately obey, to be eliminate unsafe factors in order to continue working.
1.4 crane lifting load only vertically, drag prohibited not load from the ground, to avoid side load.
1.5 During full load lifting bridge gantry crane , disabled simultaneously with two or more operating movements. Crane jib rotation angle should not exceed about 45 °, is strictly prohibited oblique hanging, hanging and fast pull down. Non-hanging pull objects buried in the ground is forbidden to force hanging pull suction affixed to the floor area of larger objects.
1.6 crane working near energized lines, they should maintain a safe distance with the maximum turning range, allow the closest distance transmission lines below, rain and fog weather safety distance should be increased to 1.5 times. Crane through the transmission line, it must be jib down.
1.7 Do not overload the crane use, if you use two cranes while lifting a heavy object, someone must obey the unified command, the two planes landing speed to maintain equal, the object's weight must not exceed two machines allowed total weight of 75%. Lashing slings, pay attention to the load distribution, load-sharing per vehicle must not exceed the allowed maximum weight of 80%.
1.8 cranes at work, between the hook and the pulley should maintain a certain distance, to prevent over-limit the cable winch or crane to pull off back flip. Luffing the jib fully extended to the maximum elevation and minimize the hook position, the winch wire rope on the drum should be kept for at least three turns or more.
1.9 Boom elevation work not less than 30 °, crane lifting a load should be avoided in case of luffing jib, crane load absolute prohibition on converting lever before stopping sound.
1.10 cranes at work is prohibited for maintenance and adjustment.
1.11 stoppages or rest, hanging objects will be allowed to hang in the air.
1.12 After work, hook and boom should be placed under secure position, and put all the control handle to neutral position.
Two commanding officers
2.1 Command signal to advance to the hoist crane driver made clear, in case of operation command signal is seen in clear, shall be provided transit assistant, accurate signal transmission.
2.2 Command gestures should be clear, the signal must be clear, are not allowed to wear gloves conductor.
2.3 lifting objects, you should first check whether the firm tied, ropes through angular, fast liner should be located at the mouth, hanging position the center of gravity must be accurate, and not the object after the force generated in the twisted, curved, Shen, oblique and so on.
2.4 In the hanging objects fixed in place before the crane driver shall leave their jobs, are not allowed in the rigging or lifting objects floating force the case to interrupt your work.
2.5 when the crane driver was rejected when lifting heavy objects, commanding officers should take measures to try to alleviate the heavy load cranes, crane overload operation directed strengthen prohibited.
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