FIELD: motors and pumps.
SUBSTANCE: system is intended for door movement. The system contains a double-acting oil-hydraulic cylinder (11) kinematically connected with a door and an electrohydraulic pump (12) for oil supply into the cylinder and its actuation by command. The switching valve (13) connects the cylinder (11) alternately with the pump (12) or with the tank (14) with oil-hydraulic liquid. In initial state the valve (13) connects the cylinder (11) with the tank (14), allowing freely to move manually the door connected with the cylinder. The valve (13) is automatically controlled by pressure changes in the system which occur with of the pump (12) starting, for disconnection of the cylinder (11) from the tank (14) and connection with the pump (12).
EFFECT: system operation reliability improvement.
4 cl, 6 dwg
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