Electro-hydraulic switch torque-changing oil-dispensing type rotating cylinder barrel type quantitative plunger piston hydraulic motor

Abstract

The invention relates to a hydraulic motor, which aims at providing a liquid switch torque-converting and oil-matching rotating cylinder type quantitative plunger hydraulic motor. The motor comprises a motor casing body, plungers, a driving disc, an oil matching valve group and a liquid torque-converting driving mechanism, wherein, the oil matching valve group is composed of integrated valves of identical number of the plungers; each integrated valve is composed of a high-speed switch high pressure oil supplying valve and a corresponding high-speed switch oil discharging / complementing valve; each high speed switch oil discharging / complementing valve is provided with an oil return hole, and each high speed switch high pressure oil supplying valve is provided with a pressure oil hole; the plunger heads of the plungers are connected with the driving disc, and the driving disc is connected with the extending axle of the motor; the tail part of a push and pull rod penetrates out of a spring cavity of the high speed switch high pressure oil supplying valve and is connected with the liquid torque-converting driving mechanism; the push and pull rod head is positioned between end surfaces of two valve cores; the liquid torque-converting driving mechanism is used for driving the integrated valves to work. The hydraulic motor has the advantages that the torque-converting control of the switch can be realized; a large quantity of energy consumption can be saved; the driving pressure of the hydraulic motor is greatly improved.

Description

technical field [0001] The invention relates to a hydraulic motor, more specifically, to a hydraulic motor with a mechanical-hydraulic switch, variable torque and oil distribution type, rotary cylinder, quantitative plunger. Background technique [0002] The plunger hydraulic motor relies on the pressure oil to act on the plunger so that the motor output shaft obtains a certain torque. In order to make the plunger communicate with the pressure oil port and the oil return port alternately, a flow distribution device must be used. At present, the plunger hydraulic motor Most of the end face distribution is used, and the main device used in the end face distribution is the oil distribution plate. The oil distribution plate is similar to a plate valve. A plane with two arc-shaped ("waist") windows is attached to the end face of the cylinder block with a flow distribution hole, so that the cylinder block and the oil distribution plate are on the surface perpendicular to the motor...

AI Technical Summary

Problems solved by technology

Due to the relative rotation between the oil distribution plate and the cylinder body, they will wear each other to form an end face gap. The leakage of the hydraulic motor mainly comes from the end face leakage between the oil distribution plate and the cylinder body. major obstacle to stress

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