| 摘要 |
A control device for a hydraulic pressure valve 1 has a pilot-control valve 3 which can be activated via a hydraulic line 20 and consists of a control spool 11, which can be acted upon against the force of a restoring spring 13, for a hydraulic control line 2 of the pressure valve 1. In order to be able to carry out a sensitive adjustment, the control spool 11 is acted upon by an actuating element 14 arranged between two pressure spaces 16a, 16b and displaceable under the pressure effect of these pressure spaces 16a, 16b, of which one pressure space 16a is in pressure connection with the inflow side 19a and the other pressure space 16b is in pressure connection with the outflow side 19b of a measurement orifice 19 connected in the hydraulic line 20 for activating the pilot-control valve 3. <IMAGE> |
