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.
Overhead crane is Hengjia in workshops, warehouses and empty field for material lifting material lifting equipment. Because of its ends located in the tall concrete pillars or metal bracket, shaped like a bridge. Overhead crane overhead bridge along the laying of tracks on both sides longitudinally running, you can take advantage of the space under the bridge lifting material from ground equipment obstacles. It is the most widely used, the largest number of a lifting machinery.
bridge gantry crane
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