The working mechanism includes lifting mechanism, running mechanism, luffing mechanism and rotating mechanism, which are called four big bodies of crane.
Lifting mechanism, which is used to realize vertical lifting of materials, is an indispensable part of any crane. Therefore, it is the most important and basic mechanism of cranes.
The operating mechanism is a mechanism for carrying materials horizontally by crane or lifting trolley. There are two kinds of track and rail operation, which are divided into self-propelled and traction.
Luffing mechanism is a special working mechanism of boom crane. The luffing mechanism changes the operation amplitude by changing the length and elevation of the boom.
The rotating mechanism is to swing the boom around the vertical axis of the crane and move the material in the annular space. The act of carrying materials by means of a single movement of a mechanism or a combination of many mechanisms.