Hydraulic excavator consists of an engine, hydraulic system, equipment, running gear and electrical control components. The hydraulic system assembled by the hydraulic pump, control valves, hydraulic cylinders, hydraulic motors, piping, tanks and other components. Electrical control system includes monitoring disk, engine control systems, pump control systems, sensors, solenoid valve.
Hydraulic excavator working device of h
ydraulic excavator generally consists of three parts, rotary devices and walking device (Figure 1). According to its configuration and use can be divided into: Crawler, tire, walker, hydraulic, semi-hydraulic, full swing, non-full rotation, general, special type, articulated, telescopic boom and other types.
Working device is a direct means to complete the mining task. It consists of the boom, arm and bucket three parts hinged together. Ups and downs of the boom, arm and bucket rotation are telescopic double-acting hydraulic cylinder reciprocating control. In order to meet the various needs of different construction operations, the hydraulic excavator can be equipped with a variety of work devices, such as digging, lifting, loading, smooth, clamps, dozer, hammer and other work tools.
Rotary and walking device is a hydraulic excavator body, the upper turret with a power plant and transmission. Engine is the power source of the hydraulic excavator, they use diesel to be at a convenient venue, but also can switch to the motor.
