Hydrostatic drive system, e.g. for working machine, has pressure valve that interacts with anti-cavitation device that can change pressure valve to inactive state

摘要

The system has a pump (3) driven by a drive motor, especially an internal combustion engine, and at least one load, especially a motor, connected to the pump in a closed circuit. A pressure valve (10a) that produces a braking pressure for the load is arranged in at least one pressurized medium line from the pump to the load. The pressure valve interacts with an anti-cavitation device (50a) that can change the pressure valve to the inactive state.