EP 1351879 B1 20061129 - FORK LIFT WITH CONTROL DEVICE
Title (en)
FORK LIFT WITH CONTROL DEVICE
Title (de)
GABELSTAPLER MIT STEUERVORRICHTUNG
Title (fr)
CHARIOT ELEVATEUR A FOURCHE AVEC DISPOSITIF DE COMMANDE
Publication
Application
Priority
- DE 10102409 A 20010115
- EP 0200155 W 20020110
Abstract (en)
[origin: WO02055426A2] The invention relates to a control device for a working device (12) connected to a hydraulic circuit (10), especially for a load fork (16) which can be raised and lowered with a working cylinder (14) in a fork-lift truck, comprising a valve control unit which moves into an adjustment position when the load fork (16) is lowered even when carrying a load (18), a predefinable maximum volume flow being maintained in the hydraulic circuit (10). By providing the valve control unit with a pressure regulator (26) limiting a pilot control pressure for the control valve (28), once a predefinable regulating pressure differential is reached in the hydraulic circuit, said control valve moves into a regulating position in order to maintain the maximum volume flow and the known flow control valve is replaced in the main flow by a pressure regulator (26) disposed in the pilot control circuit (40) and which only needs to be dimensioned for low volume flows. As a result, the control system can be constructed using simple, low-cost components which operate in a functionally reliable manner and enable stabile control behaviour.
IPC 8 full level
B66F 9/22 (2006.01); B66F 17/00 (2006.01); F15B 11/00 (2006.01); F15B 11/044 (2006.01)
CPC (source: EP US)
B66F 9/22 (2013.01 - EP US); B66F 17/003 (2013.01 - EP US); F15B 11/003 (2013.01 - EP US); F15B 11/044 (2013.01 - EP US); F15B 2211/40507 (2013.01 - EP US); F15B 2211/40515 (2013.01 - EP US); F15B 2211/413 (2013.01 - EP US); F15B 2211/41581 (2013.01 - EP US); F15B 2211/426 (2013.01 - EP US); F15B 2211/428 (2013.01 - EP US); F15B 2211/455 (2013.01 - EP US); F15B 2211/46 (2013.01 - EP US); F15B 2211/5756 (2013.01 - EP US); F15B 2211/6355 (2013.01 - EP US); F15B 2211/7052 (2013.01 - EP US); Y10S 91/02 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
WO 02055426 A2 20020718; WO 02055426 A3 20020919; AT E346819 T1 20061215; DE 10102409 A1 20020725; DE 50208840 D1 20070111; EP 1351879 A2 20031015; EP 1351879 B1 20061129; JP 2004517016 A 20040610; JP 4094954 B2 20080604; US 2004065081 A1 20040408; US 7040215 B2 20060509
DOCDB simple family (application)
EP 0200155 W 20020110; AT 02708269 T 20020110; DE 10102409 A 20010115; DE 50208840 T 20020110; EP 02708269 A 20020110; JP 2002556114 A 20020110; US 46630103 A 20031113