Common excavator structures include power devices, working devices, slewing mechanisms, operating mechanisms, transmission mechanisms, walking mechanisms and auxiliary facilities.

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

walking device

The walking device is the chassis, including the crawler frame and the walking system, which is mainly composed of the crawler frame, the walking motor + reducer and its pipeline, the driving wheel, the guide wheel, the carrier wheel, the roller, the crawler, and the tensioning buffer device. The function is to support the weight of the excavator, and convert the power transmitted by the driving wheel into traction, so as to realize the walking of the whole machine.

The frame assembly (that is, the crawler walking frame assembly) is an integral welded part and adopts an X-shaped structure. Its main advantage is that it has a high bearing capacity. The frame assembly is welded by three parts: the left longitudinal beam (ie the left track frame), the main frame (ie the middle frame) and the right longitudinal beam (ie the right track frame). The weight of the frame assembly is 2 tons.

The central rotary joint is a hydraulic component connecting the rotary platform and the oil circuit of the chassis. It ensures that after the rotary platform rotates at any angle, the travel motor can still distribute oil normally. The current rotary joint is 5-way.