Excavators are earth-moving machinery, which use buckets to excavate materials above or below the bearing surface, and load them into transport vehicles or unload them into the stockyard. Excavator is a special engineering vehicle, which consists of a rotating platform, a shovel and a mechanical arm.

Excavators usually run on tracks or wheels. Because of its special shape, there are various names in the industry, such as strange hand, backhoe, excavator and so on. Judging from the development of construction machinery in recent years, excavators have developed relatively rapidly, and excavators have become one of the most important construction machinery in engineering construction.

Structural composition:

Common excavator structures include power device, working device, slewing mechanism, control mechanism, transmission mechanism, walking mechanism and auxiliary facilities.

The transmission mechanism transmits the power of the engine to the hydraulic motor, hydraulic cylinder and other executive elements through the hydraulic pump, and pushes the working device to move, thus completing various operations.