HYDRAULIC DRIVE Russian patent published in 1995 - IPC

FIELD: mechanical engineering. SUBSTANCE: plunger cavities of two-sheeted hydraulic cylinders placed in two stories are communicated between themselves. The distributing device is connected with the power supply, with the tank and with the piston cavities of the hydraulic cylinders through pressure mains. The mechanisms of fixating the object are connected with the hydraulic cylinders. In the pressure lines throttle devices are mounted with two-positioned two-linear distributors switched on parallel to the devices. The pressure mains bound with the tank are connected with the piston cavities of the hydraulic cylinders through the controllable no-return valves. The drive is equipped with a by-pass device switched on to the plunger cavities of the hydraulic cylinders and with additional gate valves communicating the piston cavities of the controllable no-return valves with the power supply and with the tank. EFFECT: simpler design. 14 cl, 9 dwg