Abstract: A hydraulic valve device has a valve housing (10) in which an activating piston (16) is guided in a movable manner. The activating piston (16) is actuatable by an actuating device (18) and activates a pilot valve (20) to connect a fluid port (T) in the valve housing (10) to a fluid chamber (22) of a shut-off piston (24). The shut-off piston (24) activates at least one fluid-conducting connecting line (1, 2) of the valve device and has a fluid conducting control line (26) opening from the connecting line (1, 2) into the fluid chamber (22) of the shut-off piston (24).

Abstract: A method for operating a hydraulic system has at least one supply device, in particular a hydraulic pump (3) supplying different hydraulic consumers. A synchronizing device (33, 35) ensures that, if at least one hydraulic consumer is not supplied sufficiently, the deficit in volumetric flow for that consumer is compensated such that all the consumers compensate for the deficit equally.

Abstract: A hydraulic valve device has a fluid port arrangement (10) with various ports extending at least partially in the valve housing (14), and has a movable control device (18) for at least partially activating the ports. The control device (18) can be acted on at two opposite control sides with a control pressure (XA, XB) of an activation unit (46). A valve device of narrow construction and functionally reliable is created by a media-conducting duct (66) with a guide path extending at least partially as an open duct channel that can be closed off by a cover part or by other housing parts of the multi-part valve housing (14), to conduct the control pressure (XB) from the activation unit (46) to the assignable control side of the control device (18).

Abstract: A hydraulic valve device, especially an LS current regulating valve, includes a fluid connection arrangement (10). As the respective control device (14) associated with a useful connection (A) comprises a control slide (16) upstream of which a pressure balance (18) is mounted in the fluid direction towards each useful connection (A, B), any system vibrations occurring in the load sensing regulating circuit can be better controlled and the respectively connected hydraulic consumer can be subjected to a constant current regulation.

Abstract: A valve arrangement has an adjustable control valve (10) including a control slide (12) for actuating at least one consumer connection (A, B) and an LS control line. The differential pressure of two actuating pressures (xa, xb) serves for the actuation of the control slide (12). Since the actuating pressures (xa, xb) also actuate a logic valve, which in turn influences an additional valve, and/or actuates a pressure compensator connected upstream to the control valve (10), the difference of the two actuating pressures (xa, xb) initially displaces the control slide of the control valve. The higher or the lower of the two actuating pressures (xa, xb) either actuate the further valve in the form of the additional valve, and/or influences the pressure compensator.

Abstract: A hydraulic valve device includes a fluid connection arrangement (10) having different connections and a mobile control (18) for at least partially controlling connections of the fluid connection arrangement (10). The control (18) is provided with load reporting and load detecting connections (32, 38; 34, 36). According to the displacement position of the control (18), at least one part of the connections of the fluid connection arrangement (10) are interconnected in a fluid-guiding manner. The control can then be brought with precision into the required functional positions, with a favorable dynamic driving behavior.

Abstract: A hydraulic valve device, especially in the form of at least one load sensing valve, includes a valve housing (10), a control slide (12) longitudinally movable in the housing and controlling a fluid connection arrangement (14). The fluid connection arrangement includes at least one control pressure line (PST) and at least one supply pressure line (Y). At least for a load sensing connection (LS), a pocket-type channel (18) is arranged between the valve housing (10) and the control slide (12), as well as for a control pressure line (PST) and a supply pressure line (Y). This arrangement enables the available ring channel of the load sensing message chain to be used on axial point of the control slide axle, reducing cost and space.

Abstract: A controlling device for hydraulic consumers (10, 12) has one controlling valve (18) for controlling a supply pipeline (TReg) for the hydraulic consumer (10, 12) and a tank return pipeline (TRO). Because the control valve (18) is connected to an additional supply pipeline (TR) and constructed as a priority valve, the supply pipeline (TReg) receives priority preference of a fluid supply system over the priority of the tank return pipeline (TRO). A sensor circuit is realized which checks whether, in accordance with the load situation at the hydraulic consumer (10, 12), there is any need at all for a supply flow.

Abstract: The invention relates to a device for locking an axially movable component (2) of a hydraulic system, wherein the axially movable component (2) can be detachably fixed in a positively locking manner in at least one axial position by means of a detent mechanism (4) with at least one detent body (5), and with a release device (6) for releasing the respective detent body (5) from the axially movable component (2), wherein the detent mechanism (4) can be latched and released by means of a clamping piston (7) and using a force store (8), and wherein the clamping piston (7) can be moved in a working chamber (27) which can be charged with a clamping pressure, which device is characterized in that the clamping piston (7) can be adjusted at least into one switching position by a switching device (9), in that the clamping piston (7) can be acted on with the clamping pressure by means of the switching device (9) and, in said switching position, can be moved out of the latching position thereof by the force store (8) in

Abstract: The invention relates to a hydraulic valve device (1) having a fluid connection arrangement (10) comprising a multiplicity of fluid connection points which can at least partially be actuated by means of a control device (18). As a result of the fact that, by way of a means (2) for measuring the load pressure, the control device (18) can be moved into a rapid traverse position when a maximum load pressure is exceeded in a power stroke position and vice versa, and that at least one fluid-conducting working chamber of a consumer (4) is connected to one of the use connections (A) during a switch of the control device (18) for a change from power stroke to rapid traverse, a jerk-free transition from a working stroke to a rapid traverse is attained and a homogeneous, jerk-free return to the working stroke is enabled when an overload situation is encountered in the rapid traverse.

Abstract: The invention relates to a hydraulic valve device having a fluid connector arrangement (10) comprising at least one pressure supply connector P for providing a pump pressure, a return flow connector R,—a section load sensing connector LS, two control connectors P?A and P?B, and two utility connectors A, B for providing a utility connection pressure, and having a displaceable control device (18) for at least partially controlling the connector arrangement (10), wherein a pressure balance (14) is connected upstream of the control device (18), and wherein the pressure balance (14) comprises a check valve (56).

Abstract: The invention relates to a hydraulic valve device having a valve housing (10) in which an activating piston (16) is guided in a movable manner, which activating piston (16), being actuable by an actuating device (18), activates a pilot valve (20) by means of which a fluid port (T) in the valve housing (10) can be connected to a fluid chamber (22) of a shut-off piston (24), which shut-off piston (24) activates at least one fluid-conducting connecting line (1, 2) of the valve device and has a fluid-conducting control line (26) which opens out from the connecting line (1, 2) into the fluid chamber (22) of the shut-off piston (24).

Abstract: The invention relates to a hydraulic valve device having a fluid port arrangement (10) with various ports which runs at least partially in the valve housing (14), and having a movable control device (18) for at least partially activating ports of the fluid port arrangement (10), wherein the control device (18) can be acted on at two opposite control sides with a control pressure (XA, XB) of an assignable activation unit (46). A valve device which is of narrow construction and which is functionally reliable is created in that a media-conducting duct (66), the guide path of which runs at least partially as an open duct channel which can be closed off by a cover part or by other housing parts of the multi-part valve housing (14), serves to conduct the control pressure (XB) from the activation unit (46) to the assignable control side of the control device (18).

Abstract: The invention relates to a hydraulic valve device, especially an LS current regulating valve, comprising a fluid connection arrangement (10) containing a plurality of useful connections and supply connections, and at least one mobile control device (14) for at least partially controlling the connections of the fluid connection arrangement (10). As the respective control device (14) associated with a useful connection (A,b) comprises a control slide (16) upstream of which a pressure balance (18) is mounted in the fluid direction towards each useful connection (A, B), any system vibrations occurring in the load sensing regulating circuit can be better controlled and the respectively connected hydraulic consumer can be subjected to a constant current regulation.

Abstract: The invention relates to a hydraulic valve device comprising a fluid connection arrangement (10) having different types of connections, and a mobile control device (18) for at least partially controlling connections of the fluid connection arrangement (10). As the control device (18) is provided with load reporting and load detecting connections (32,34; 36,38) that are interconnected and thereby associate a load reporting connection with a detection connection (32,38; 34,36), and, according to the displacement position of the control device (18), interconnect at least one part of the connections of the fluid connection arrangement (10) in a fluid-guiding manner, the control device can be brought with precision into the required functional positions, with a favourable dynamic driving behaviour.

Abstract: The invention relates to a hydraulic valve device, especially in the form of at least one load sensing valve, comprising a valve housing (10), a control slide (12) arranged in a longitudinally mobile manner and used to control a fluid connection arrangement (14) comprising a plurality of connection points, at least one control pressure line (PST), and at least one supply pressure line (Y). At least for a load sensing connection (LS), a pocket-type channel (18) is arranged between the valve housing (10) and the control slide (12), for a control pressure line (PST) and a supply pressure line (Y), and this enables the already available ring channel of the load sensing message chain to also be used on an axial point of the control slide axle of, thereby reducing cost and space.

Abstract: The invention relates to a controlling device for hydraulic consumers (10, 12) with at least one controlling valve (18) for controlling a supply pipeline (TReg) for the respective hydraulic consumer (10, 12) and with a tank return pipeline (TR0). Because the control valve (18) is connected to an additional supply pipeline (T0) and constructed as a priority valve in such a manner that the supply pipeline (TReg) receives priority preference of a fluid supply system over the priority of the tank return pipeline (TR0), a type of sensor circuit is realized which checks whether, in accordance with the load situation at the hydraulic consumer (10, 12), then is any need at all for a supply flow.

Abstract: A method for operating a hydraulic system having at least one supply device, in particular a hydraulic pump (39)), which supplies different hydraulic consumers is characterized in that a synchronizing device (33, 35) ensures that, if at least one hydraulic consumer is not supplied sufficiently, the deficit in volumetric flow for said consumer is compensated for in such a way that all the consumers compensate for the deficit equally.

Abstract: The invention relates to a valve arrangement having an adjustable control valve (10), comprising a control slide (12) for actuating at least one consumer connection (A,B), and having an LS control line, wherein the differential pressure of two actuating pressures (Xa, Xb) serves for the actuation of the control slide (12). Due to the fact that the actuating pressures (Xa, Xb) also actuate a logic valve, which in turn influences an additional valve, and/or actuates a pressure scale that is connected upstream to the control valve (10) having the control slide (12), the difference of the two actuating pressures (Xa, Xb) initially displaces the control slide of the control valve, wherein the higher or the lower of the two actuating pressures (Xa, Xb) either actuate the further valve in the form of the additional valve, and/or influences the pressure scale.

Abstract: The invention relates to a control valve (10) for controlling the pressure and flow of hydraulic oil from or to the working connections (A, B) of a consumer. The pressure and the pressure flow are controlled by means of at least one sliding piston which can be actuated by at least one drive mechanism and which can be displaced in a slider hole and in co-operating annular channels. The invention is characterized in that the annular channels are symmetrically arranged, whereby a tank connection annular channel is arranged in the symmetrical centre point on a symmetrical axis. Annular channels associated with the working connections (A, B), pump-pressure annular channels, load-sensing annular channels and end-chamber annular channels are arranged behind each other on both sides. According to the invention, the latter can be connected to other channels.