Lifting machinery to the mechanic electrical equipment that used to lift vertically or lift vertically and moving horizontally of heavy objects, the scope weight should not more than 0.5t that the lifter lifts vertically. Crane with rated lifting weight greater than or equal to 3t (or rated lifting moment greater than or equal to 40t·m tower crane, or productivity greater than or equal to 300t/h unloading bridge).

The driving device is used to drive the power equipment of the working mechanism. The common driving devices are electric drive, internal combustion engine drive and human drive. As the development of the slip ring motor, the integrated slip ring combined many electric power and signals more and more apply to the lifter. Take the lifting mechanism for example, through the electrical, hydraulic system control crane and the movement of the whole machine, a variety of lifting operations. The control and control system includes various manipulators, displays and related components and lines, which is the interface of man-machine dialogue.