Control valve unit for hydraulic consumer; has distributing valve formed as longitudinal slider, which controls connection of container channel and at least one consumer channel having check valve

摘要

The unit (1) has a distributing valve (2) formed as a longitudinal slider (3), which controls the connection of at least one consumer channel (9a,b) and a container channel (11). A check valve (15a,b) arranged in the consumer channel prevents flow back from the consumer to the distributing valve and is controlled by a pre-control valve. When the consumer channel is connected to the container channel, the pre-control valve is opened. The pre-control valve is connected to a drive shaft (50) driving by a drive device. The drive shaft is connected by a gear unit (52) to the longitudinal slider. The pre-control valve is opened by a rotation of the drive shaft.