Hydraulische Steuervorrichtung zur Druckmittelversorgung mehrerer hydraulischer Verbraucher

摘要

The invention concerns a hydraulic control device which has a first pressure medium source (11) and a first priority valve (14) allocated to it, via which the following pressure medium from the first pressure medium source (11) is supplied to a higher-priority hydraulic consumer (19) and to a first lower-priority hydraulic consumer (51). In addition, the hydraulic control device in question has a second pressure medium source (27) and a second priority valve (28) allocated to it, via which pressure medium is also supplied to the higher-priority hydraulic consumer (19) and to a second lower-priority hydraulic consumer (53). According to the invention, the higher-priority hydraulic consumer (19) is supplied respectively with pressure medium from both pressure medium sources (11, 27). To that end, downstream of the primary outlet (15) of the first priority valve (14) is provided a first metering orifice (28) via which a constant pressure difference can be adjusted by the first priority valve (14), and downstream of the primary outlet (15) of the second priority valve (28) is provided a second metering orifice (30) via which a constant pressure difference can be adjusted by the second priority valve (28). The two pressure medium flows flowing through the metering orifices (25, 30) are reunited downstream of the metering orifices.