Hydraulic system

摘要

The hydraulic system has a pump (10) which is driven by a drive machine (16) and delivers pressure medium to one or more consumers via a load-sensing directional control valve (13). The rotational speed of the drive machine (16) is determined by a speed controller (17) which is itself in turn adjusted via a servo cylinder (18) to which pressure is admitted. Pressure is admitted to the servo cylinder via the load-sensing directional control valve (13), which has a control spool (60) which makes a connection both from the pump to a return and from the pump via a special piston section (31) to an inflow (30), from which a line (21) leads to the servo cylinder (18). In this way, a relatively simple and very compact system and arrangement is obtained for the cost-effective supply of hydraulic consumers. <IMAGE>