The basic structure and working principle of excavator:First, the overall structure of single bucket hydraulic excavatorThe overall structure of single bucket hydraulic excavator includes power unit, working device, slewing mechanism, control mechanism, transmission system, walking mechanism and auxiliary equipment, etc..The power unit, the main parts of the drive system, the slewing mechanism, the auxiliary equipment and the cab are all installed on the rotatable platform, which is usually called the upper turntable. Therefore, the single bucket hydraulic excavator can be summarized into three parts: working device, upper rotating platform and running mechanism.The excavator is through the diesel engine of the diesel oil chemical energy into mechanical energy, the hydraulic piston pump to convert mechanical energy into hydraulic energy, the hydraulic system of the hydraulic can be assigned to each actuator (hydraulic cylinder, rotary motor + reducer, walking motor + reducer), by the actuator to the hydraulic energy into the mechanical energy, realize the working device of rotary platform motion, rotary motion, the walking motion.
The excavator is driven by the engine work in pump operation, the pump is divided into pump and pump, and then by the operation of the hydraulic excavator driver rod of the hydraulic oil distribution to the pilot valve and main control valve, such as the hydraulic oil distribution to the main control valve, hydraulic oil delivered by the main control valve to the arm; small arms; dig bucket cylinder, and then drive the arm; small arms; digging bucket. If the hydraulic oil is allocated to the pilot valve, the hydraulic oil drives the motor through the pilot valve to make the excavator rotate and drive.
