Traveling Principle: The used excavator adopts a steel track traveling mechanism. The travel motor drives the drive sprocket to rotate the track cyclically. The track enlarges the contact area with the ground and effectively distributes the whole‑machine weight. It can move stably on complex grounds such as soil and gravel, adapting to various harsh road conditions on construction sites.

          Excavation Working Principle: The equipment is equipped with a backhoe working device. Excavation movements are realized through the linkage of three groups of hydraulic cylinders for boom, arm and bucket. The operator manipulates the pilot joystick to output control signals. The hydraulic system delivers pressurized oil to each working cylinder to complete a full set of operations including boom lifting/lowering, arm crowding/dumping, bucket digging and material dumping.