Hydraulic power pack unit system for Hydraulic Dock Leveller

Hydraulic power unit discription
This HPU is designed for Hydraulic Dock Ramp(wharf bridge),it's made of high pressure gear pump,AC motor,manofoid block,Hydraulic Vavle and oil tank,etc.When the main deck rises in place,the labial lamina rises automaticly,solenoid valves control it down,the down speed is controlled by the flow control valve .