Hydraulic drive single bucket excavator An excavator that transmits power using components such as oil pumps, hydraulic cylinders, and hydraulic motors. The pressure oil output by the oil pump drives the hydraulic cylinder or the motor to work, so that the corresponding parts of the machine operate. Common is the backhoe (see color map). During the backhoeing operation, the boom is lowered. As a support, the bucket cylinder is placed below the stop surface by the arm cylinder or the bucket hydraulic cylinder, and the arc is moved to excavate and load the soil, and then the starting arm is lifted. The motor turns to the unloading point and the bucket is turned over to unload the soil. The whole machine is driven by the left and right hydraulic motors, and the motor is reversed and can be moved in, out or turned. Tire walking is also driven by the engine through the gearbox, main drive shaft and differential, but the mechanism is complex. Small and medium-sized machines are mostly driven by a double pump, and a pump is separately added to drive the slewing mechanism to save power. The main technical parameters of hydraulic transmission excavators are bucket capacity, and the main parameters are machine weight or engine power. The excavator is compact in structure and light in weight. It often has a variety of workable devices to meet various operational needs. The operation is light and flexible, and the work is stable and reliable. Therefore, it has developed rapidly and has become a major variety of excavators.engineering construction.