The invention relates to a
hydraulic motor and aims at providing an electro-hydraulic switch variable torque
oil distribution type rotary cylinder type quantitative
plunger hydraulic motor. The motor includes a motor housing, a
swash plate, a switch variable torque valve-controlled
oil distribution assembly, an electro-mechanical converter, a drive
amplifier, a
brush, an induction ring and an
electronic controller; the switch variable torque valve-controlled
oil distribution assembly includes an oil distribution valve The oil distribution valve group includes a high-speed switch high-pressure
oil supply valve and a high-speed switch oil
discharge / fill valve; each valve is connected to an electro-mechanical converter, and each electro-mechanical converter is connected to a drive
amplifier; the high-speed switch high-
voltage supply valve The inlet port of the oil valve is connected to the pressure oil port, and the outlet port is connected to the
plunger chamber of the
plunger; one end of the spring chamber of the high-speed switch oil
discharge / fill valve is connected to the plunger chamber of the plunger, and the other end is connected to the oil return port . The invention realizes switch variable torque control and saves a lot of
energy consumption; the valve-controlled oil distribution component is directly installed on the end face of the
hydraulic motor plunger cylinder body, which greatly improves the driving pressure of the hydraulic motor.