Hydraulic pump for providing pressure for operation of hydraulic system, has main pump and loading pump that are formed as separate units, where main pump is designed as tandem pump, and loading pump is arranged in suction pipe of main pump

摘要

The pump has a main pump and a loading pump that are formed as separate units, where the main pump is designed as tandem pump. The loading pump is driven by a motor (30) via a spur wheel or a koruny wheel in an electrical and hydraulic manner. The loading pump is arranged in a suction pipe (10) of the main pump, and is arranged at a suction connection of a hydraulic tank of the hydraulic pump. The loading pump has an impeller (20) that is arranged in a common suction region of the main pump.