APPARATUS FOR BLOCKING AND FOR ADJUSTING A PRESSURE

摘要

The invention relates to an apparatus (10) for blocking and for adjusting a pressure for a hydraulically controllable actuator mechanism (12), in particular in the form of a lifting unit (16) of a machine (18). Said apparatus (10) allows at least one working chamber (20, 22) to be selectively connected to a pressure supply unit (94) comprising a storage device (34) or to a discharge end (66), in particular a reservoir end, by means of a valve unit (38). The apparatus (10) of the invention is characterized in that in a controlling position of the valve unit (38), when the storage pressure in the storage device (34) is greater than the working pressure in the at least one working chamber (20) of the actuator mechanism (12), the storage pressure is relieved in the direction of the discharge end (66) until the working pressure has been reached.

主权项

1. An apparatus for locking and adjustment of pressure for a hydraulically controllable actuator device (12), in particular in the form of a lifting mechanism (16) of a working machine (18), of which at least one working chamber (20, 22) can be selectively connected to a pressure supply device (94), comprising an accumulator device (34), or to a discharge side (66), in particular a tank side, by means of a valve device (38), characterized in that, in a control position of the valve device (38) at an accumulator pressure of the accumulator device (34) that is higher than the working pressure in the one working chamber (20) of the actuator device (12), this accumulator pressure is relieved to the discharge side (66) until this working pressure is reached.