Lifting the working principle, characteristics and operation Note

Lifting is a transportation equipment, mainly for heavy objects shift operation, through which you can make to reduce labor intensity, improve labor productivity, so it is also an integral part of modern production, mechanization of production and automated.
1 crane works
Lifting with a  jib crane  hook or other lifting devices or extract plus mobile lifting heavy objects. Lifting the working process generally includes lifting, running, down and back in situ and other steps. Hoisting device via extract extract location from the heavy lifting, after running, slewing or luffing mechanism to shift weight, weight at the designated location and returned to its original position decentralization.
(2) the characteristics of lifting machinery
(1) Lifting general structure of large complex organizations, to complete the lifting movement, horizontal movement. For example, to complete the lifting crane, dolly carts run and run three sports; portal  bridge crane  can complete hoisting, luffing, slewing and carts run four movements. In the working process, often several different directions of motion simultaneously, greater technical difficulty.
(2) lifting the lifting of heavy objects varied load varies. Some heavy objects weighing several hundred tons or even thousands of tons, and some objects up to tens of meters, irregular shape, with scattered granules, hot melt state, inflammable and explosive dangerous goods, etc., lifting process is complex and danger.
(3) Most of lifting machinery, you need to operate within a larger space, and some want to install rails and wheels; some should be fitted with tires or caterpillar walking on the ground; others need to walk on a wire, activity larger space, once the effects of the accident caused by a range of well.
(4) requires some lifting carriage of persons on the rail, platform or rope to do lifting movement, which directly affects the reliability safety.
(5) Lifting exposed, moving parts more, and often direct contact with the lifting operation, the potential risk factors for many sporadic.
(6) operating environment is complex. From large-scale iron and steel enterprises to modernize ports, construction sites, railway hubs, tourist attractions, there are lifting machinery in operation; workplaces often case temperature, high pressure, flammable, transmission lines, magnetic and other risk factors , for equipment and operating personnel a threat.
(7) Lifting operations often require more than one match, jointly conducted. An operation requiring command, strapping, driving and other operations personnel with skilled, motor coordination, mutual care. Workers should have the ability to deal with on-site emergencies. More close cooperation between workers, usually there is a big difficulty.
3 lifting operations Note
Lifting operations often require more than one match, jointly conducted. An operation requiring command,hoist crane strapping, driving and other operations personnel with skilled, motor coordination, mutual care. Workers should have the ability to deal with on-site emergencies. More close cooperation between workers, usually there is a big difficulty. Lifting of the work characteristics, determine its relationship with great safety. If lifting the design, manufacture, installation and maintenance of such links is the slightest negligence may cause equipment accidents.