Adjustable pressure's hydraulic pump

The utility model discloses an adjustable pressure's hydraulic pump, including the pump body, oil tank and engine, the internally mounted engine of the pump body, the oil tank is connected to the bottom of engine, and one side of oil tank separates has the cavity, and the oil pipe one end in the cavity feeds through the oil outlet of the oil tank of oil tank, and its other end intercommunication oil -out, and the last pressure regulating valve that installs of oil pipe, pressure regulating valve pass through pipe intercommunication sediment tube, and the oil pipe that returns of one side top of sediment tube feeds through the oil tank, mounting cam on the engine, two plungers of connecting piece symmetric connection are passed through to the both sides of cam, and just the oil -out is plugged up to a plunger, and the oil inlet of oil tank one end is plugged up to another plunger, the utility model discloses a hydraulic pump can be adjusted the pressure of hydraulic pump through settingup pressure regulating v