EP 0968334 A1 20000105 - HYDRAULIC CONTROL SYSTEM FOR A MOBILE WORK MACHINE, ESPECIALLY A WHEEL LOADER
Title (en)
HYDRAULIC CONTROL SYSTEM FOR A MOBILE WORK MACHINE, ESPECIALLY A WHEEL LOADER
Title (de)
HYDRAULISCHE STEUERANORDNUNG FÜR EINE MOBILE ARBEITSMASCHINE, INSBESONDERE FÜR EINEN RADLADER
Title (fr)
SYSTEME DE COMMANDE HYDRAULIQUE POUR UNE MACHINE DE TRAVAIL MOBILE, EN PARTICULIER POUR UN CHARGEUR SUR ROUES
Publication
Application
Priority
- DE 19711769 A 19970321
- EP 9801543 W 19980317
Abstract (en)
[origin: DE19711769A1] The invention relates to a hydraulic control system for use predominantly for a mobile working machine, especially a wheel loader, comprising at least one hydraulic cylinder (12) which helps to move the working tool, a distribution valve (11) for controlling the pressure channels between the hydraulic cylinder (12), a pressure source and a tank (27), a hydraulic accumulator (21) which can be connected to the pressure source via a filling line (20) and a control valve (50, 60, 75). Said control valve provides the means for controlling the opening and closing of a connection between the hydraulic accumulator (21) and the hydraulic cylinder (12). The aim of a hydraulic control system of this type is to avoid unwanted movements of the hydraulic cylinder. According to the invention, the inventive hydraulic accumulator can only be filled up when the distribution valve is activated in order to achieve this aim.
IPC 1-7
IPC 8 full level
E02F 3/43 (2006.01); E02F 9/22 (2006.01); F15B 1/02 (2006.01); F15B 21/14 (2006.01)
CPC (source: EP KR US)
E02F 9/2207 (2013.01 - EP KR US); E02F 9/2217 (2013.01 - EP KR US); E02F 9/2267 (2013.01 - KR); F15B 1/02 (2013.01 - EP US); F15B 1/02 (2013.01 - KR)
Designated contracting state (EPC)
DE FR GB IT SE
DOCDB simple family (publication)
DE 19711769 A1 19981001; DE 19711769 C2 19990602; DE 59804420 D1 20020718; EP 0968334 A1 20000105; EP 0968334 B1 20020612; JP 2001519009 A 20011016; KR 100491841 B1 20050527; KR 20010005508 A 20010115; US 6260355 B1 20010717; WO 9842923 A1 19981001
DOCDB simple family (application)
DE 19711769 A 19970321; DE 59804420 T 19980317; EP 9801543 W 19980317; EP 98916979 A 19980317; JP 54207098 A 19980317; KR 19997008566 A 19990920; US 38143999 A 19990916