Hydac Mobilhydraulik Gmbh

Hydac Systems & Services Gmbh

Marc Anton

Timo Kiefer

Heinz-Peter Huth

Stephan Grün

Michael Berwanger

Josef Scholl

Markus Mohrbacher

The invention relates to an actuation device for at least one fluidically drivable load (), such as a hydraulic actuator, consisting of at least one valve controller (V) for controlling an alternating movement of each load () and at least one suspension device () which is connected between the valve controller (V) and each load (), wherein the suspension device () has an additional valve controller (V), the valve piston () of which can be moved in a corresponding valve housing in a continuously adjustable manner. The invention is characterized in that a storage device () of the suspension device () is connected to the respective load () via a fluid path by means of the additional valve controller (V) in a suspension position (V.IV) of the valve piston () of the additional valve controller (V).

Actuating apparatus for at least one fluidically drivable load

A hydropneumatic suspension system for vehicles, at least consisting of an axle suspension () and a cabin suspension (), which for supplying them with pressurized fluid, can be connected to a pressure supply source, is characterized in that both the axle suspension () and the cabin suspension () can be actuated jointly by means of an control device (), and in that, by means of a priority detection system () involving a sensor device () for the respective suspension (), the supply with pressurized fluid of the one suspension () takes precedence depending on demand over the other suspension ().

Hydropneumatic suspension system for vehicles

A control device for controlling a hydraulic consumer (), such as a working cylinder, has at least one control valve () having a control spool (). Control spool () is guided in a valve housing () in a longitudinally movable manner and is actuated by an electric motor (). Electric motor () can be controlled by control electronics (MC), which receive input signals from a sensor device () detecting at least one operating state of the consumer ().

Control device

A control apparatus for supplying at least one hydraulic consumer with fluid has a variable displacement pump () controlled by a load-sensing pressure (LS). For a case-by-case increase in the volume flow in the supply of fluid () to the hydraulic consumer, the load-sensing pressure (LS) is passed via a control line () to a control circuit () that ensures the increase in the supply () by connecting in a constant-displacement pump () as soon as an operator calls for the relevant function by operating the control circuit ().

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Völklingen, Germany

Marc Anton