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1. (WO1998013604) LOAD-SENSING HYDRAULIC CIRCUIT FOR A SELF-PROPELLED BUILDING AND WORKING MACHINE

Pub. No.:    WO/1998/013604    International Application No.:    PCT/EP1997/004846
Publication Date: Apr 2, 1998 International Filing Date: Sep 6, 1997
IPC: E02F 9/22
F15B 11/16
Applicants: O & K ORENSTEIN & KOPPEL AG
BÖSEBECK, Volker
HOLTMANN, Michael
Inventors: BÖSEBECK, Volker
HOLTMANN, Michael
Title: LOAD-SENSING HYDRAULIC CIRCUIT FOR A SELF-PROPELLED BUILDING AND WORKING MACHINE
Abstract:
A device for the load-dependent automatic opening and closing of a closed-centre load-sensing hydraulic circuit containing control and regulating elements for self-propelled hydraulic building and working machines has at least one variable displacement pump that can be driven by a corresponding pressure regulator. The signals that cause the hydraulic circuit to close and open are derived from the pump and load-sensing load pressure in the hydraulic circuit.