Hydraulic control device for mobile working machine e.g. hydraulic excavators, has delivery pressure regulator that includes shuttle valve connected to steering pressure and pump pressure, such that pressure set-point is derived

The device (10) has a hydraulic steering device (20) that comprises a steering valve (21) which controls the flow of fluid. A pump (40) has an adjustable displacement volume which adjusts the displacement volume, such that one pump pressure (41) is controlled. A pump (50) has a constant displacement...

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Bibliographische Detailangaben
1. Verfasser:	HARNISCHFEGER, EDWIN
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	BLASTING DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR DREDGING FIXED CONSTRUCTIONS FLUID-PRESSURE ACTUATORS FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS FOUNDATIONS HEATING HYDRAULIC ENGINEERING HYDRAULICS OR PNEUMATICS IN GENERAL LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS LIGHTING MECHANICAL ENGINEERING MOTOR VEHICLES PERFORMING OPERATIONS SOIL SHIFTING SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL TRAILERS TRANSPORTING WEAPONS
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