Common excavator structures include power device, working device, slewing mechanism, control mechanism, transmission mechanism, traveling mechanism and auxiliary facilities.
From the appearance, the excavator is composed of working device, upper turntable and traveling mechanism. According to its structure and use, it can be divided into crawler type, tire type, walking type, full hydraulic, semi hydraulic, full rotation, non full rotation, universal type, articulated type, telescopic arm type and other types.
The working device is a device that can directly complete the excavation task. It is hinged by boom, stick, bucket, etc. Boom lifting and lowering, stick telescoping and bucket rotation are controlled by reciprocating double acting hydraulic cylinders. In order to meet the needs of various construction operations, excavators can be equipped with a variety of working devices, such as excavation, lifting, loading, leveling, clamps, bulldozers, impact hammers and other operating devices.
The slewing and traveling device is the body of the hydraulic excavator, and the upper part of the turntable is equipped with a power device and a transmission system. The engine is the power source of the excavator, and most of them use diesel as the fuel.
The transmission mechanism transmits the power of the engine to the hydraulic motor, wave pressure cylinder and other actuating elements through the hydraulic pump to push the working device to act, thus completing various operations.
