Hydraulic directional valve e.g. pressure maintenance valve, for controlling pressure medium flow path, has detent device formed such that detent device is triggered if pressure medium volumetric flow in pressure medium flow path is zero

The valve (46) has a detent device (66) over which a valve slide (58) of the valve is locked in a function position. The detent device is formed such that the detent device is triggered if pressure medium volumetric flow in a pressure medium flow path is zero. The detent device has a piston (84) for...

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Bibliographische Detailangaben
Hauptverfasser:	PIEKATZ, PETER, GOETZ, KURT, WEISS, STEFAN, EHMANN, SIMON, LANG, STEFAN, ROSER, BERTHOLD, BLAU, ALFRED-ALEXANDER, LANG, CARSTEN, BREID, JOACHIM, KEYL, CHRISTOPH, MALLACH, MICHAEL, ERNSTMEIER, TANJA
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	ACTUATING-FLOATS BLASTING COCKS DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR DEVICES FOR VENTING OR AERATING ENGINEERING ELEMENTS AND UNITS FLUID-PRESSURE ACTUATORS FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING HYDRAULICS OR PNEUMATICS IN GENERAL LIGHTING MECHANICAL ENGINEERING SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL TAPS THERMAL INSULATION IN GENERAL VALVES WEAPONS
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Beschreibung
Zusammenfassung:	The valve (46) has a detent device (66) over which a valve slide (58) of the valve is locked in a function position. The detent device is formed such that the detent device is triggered if pressure medium volumetric flow in a pressure medium flow path is zero. The detent device has a piston (84) for locking the valve slide. The piston has two piston surfaces (90, 92) turned away from each other. Upstream pressure in a locking direction of the detent device acts on one of the piston surfaces. Downstream pressure in a release direction acts on the other piston surface. Offenbart ist ein hydraulisches Wegeventil zum Steuern eines Druckmittelströmungspfads mit einer Rasteinrichtung. Ein Ventilschieber des Ventils ist hierbei über die Rasteinrichtung verrastbar. Diese ist dabei derart ausgestaltet, dass sie in Abhängigkeit eines Druckmittelvolumenstroms gesteuert ist. Die Rasteinrichtung löst dabei dann aus, wenn der Druckmittelvolumenstrom im Wesentlichen Null ist.