HYDRAULIC SYSTEM Russian patent published in 1995 - IPC

FIELD: hydraulics. SUBSTANCE: inputs of two discharge valves are connected up to the pump output, their outputs to the opposite cavities of the hydraulic motor. The inputs of two drain valves are connected up to the cavities, their outputs to the drainage into the tank. The hydraulic lines of controlling the discharge and drain valves connected with the opposite cavities are communicated between themselves and are connected up to the hydraulic distributor. The inputs of two safety valves are connected up to the corresponding hydraulic lines of control, their outputs to the drainage. The hydraulic distributor is made as three-positioned, four-linear, its discharge line in the neutral position is communicated with the working taps and is connected up to the pump through the reducing valve. In the extreme positions it is communicated with the corresponding control line. EFFECT: enhanced efficiency. 1 dwg