Working Principle of Wheel Excavator

One diesel engine or motor drives two main hydraulic pumps of the hydraulic tire excavator to generate high-pressure oil and deliver it to the multi way valve, which is controlled by the pilot control valve and sent to the relevant hydraulic actuator (hydraulic cylinder or hydraulic motor, etc.) through the multi way valve to drive the corresponding mechanism for work. Generally, more than two compound actions and the combination of boom and stick actions are required in the working process of working devices to make full use of engine power and shorten the working cycle time. The traveling of wheeled excavator generally adopts hydraulic mechanical transmission, that is, the high-pressure oil directly drives the gearbox from the central rotary body to the traveling hydraulic motor, and then drives the vehicle traveling through the transmission shaft and drive axle. The traveling speed of wheel excavation is generally divided into two grades: the low grade is the traveling speed during operation, and the high grade is the highway traveling speed.