Brand Zhonggong Excavator Type Wheel Excavator Excavator Size Medium

Transmission Method Hydraulic Bucket Capacity 0.8 (m3) Engine Power 37 (kW) Digging Width 4000 (mm) Digging Depth 2000 (mm) Rotation Speed 3 (rpm) Gradeability 30 (°) Vehicle Weight 3230 (kg) Application Universal

Product Type Model 922 Wheel Excavator Has Own Brand Yes

Cross-Border Goods Yes

Wheel excavator full rotation mechanism, according to the structural form of the hydraulic motor, can be divided into high-speed and low-speed schemes. The high-speed scheme is driven by a high-speed hydraulic motor through a gear reducer to rotate the fixed ring gear on the small support, causing the turntable to rotate. Hydraulic system scheme design, according to the transmission requirements of each mechanism and device of the excavator, the combination of hydraulic components connected by pipelines is called the hydraulic system of the excavator. The function of the hydraulic system is to convert the mechanical energy of the engine into hydraulic energy using oil as the medium through a hydraulic pump for transmission, and then convert it back into mechanical energy through actuators such as hydraulic cylinders and hydraulic motors to achieve movement.

The operation process of a single-bucket hydraulic excavator includes the following intermittent actions:

Boom lifting, arm retraction and extension, bucket loading and unloading, turntable rotation, machine travel, and other actions. Except for actions that do not require full power drive, the others are the main actions of the excavator and require consideration of full power drive. Due to the significant variations in the excavator's working objects and conditions, the host machine has two main requirements:

, When performing main actions, resistance and operating speed change, therefore, the pressure and flow of hydraulic cylinders and hydraulic motors must also change accordingly.

, To utilize engine power and shorten the operation cycle time, it is often required that two main actions be performed simultaneously, known as compound actions. These two requirements need to be met by the hydraulic system.