Hydac Fluidtechnik Gmbh

Hydac Mobilhydraulik Gmbh

Christian Stauch

Peter Bruck

Frank Schulz

Marcus Karl Pfeiffer

Philippe Vande Kerckhove

Jan Lübbert

Joachim Rudolph

A system for charging and discharging at least one hydraulic accumulator () can be connected to a valve control device (). The valve control device () has at least one logic valve (). A shuttle valve () and a hydraulically operated switching valve () are also provided. The valves () are interconnected such that the hydraulically actuatable switching valve () compares the accumulator pressure (p) to a minimum accumulator pressure (p) that can be adjusted via the control pressure setting of this switching valve ().

System for charging and discharging at least one hydraulic accumulator

A valve arrangement for supplying pressure medium to a hydraulic consumer has two utility ports (A, B) for fluid connection to the consumer and has a first control valve. The first control valve () has a first intake () via which a first intake flow from the first utility port (A) to the consumer () is controllable, has a first return control orifice () via which a first return flow () from the consumer () via the second utility port (B) is controllable simultaneously with the first intake (), has a second intake () via which a second intake flow from the second utility port (B) to the consumer () is controllable, and having a second return control orifice (), via which a second return flow () from the consumer () via the first utility port (A) is controllable simultaneously with the second intake (). A second control valve () has an intake control orifice () used to control the respective intake () of the first control valve ().

Valve arrangement for pressure medium supply of a hydraulic consumer

Growing community of inventors

Schwalbach, Germany

Christian Stauch