EP 0582859 B1 19970129 - Hydraulic control device
Title (en)
Hydraulic control device
Title (de)
Hydraulische Steuervorrichtung
Title (fr)
Dispositif de commande hydraulique
Publication
Application
Priority
DE 9210646 U 19920810
Abstract (en)
[origin: EP0582859A1] A hydraulic control device (1), comprising at least one directional control valve (4) which is connected to a pump and return line (7, 9; 8, 10) and from which at least one consumer line (5, 6) leads to a hydraulic consumer (50), a fixed displacement pump (11) supplying a pump line (7, 9) via a regulating valve (12), and a control-pressure circuit (20) in which a control pressure dependent upon the load pressure in the consumer line (5, 6) can be controlled, the regulating valve (12) of which can be acted upon on a closing-pressure side (49) by the control pressure from the control circuit (20) and by spring force (24) as well as on an opening-pressure side (48) by the pump pressure, has a hydraulic, mechanically preloaded, opening-movement damping device (15) between the closing-pressure side (49) and the control circuit (20), which opening-movement damping device (15) can be automatically cut out if a predetermined pressure difference between the higher control pressure applied to the closing-pressure side (49) and the lower control pressure prevailing in the control circuit (20) is exceeded. <IMAGE>
IPC 1-7
IPC 8 full level
F15B 11/05 (2006.01); F15B 11/16 (2006.01)
CPC (source: EP)
F15B 11/165 (2013.01); F15B 2211/205 (2013.01); F15B 2211/30535 (2013.01); F15B 2211/3111 (2013.01); F15B 2211/31576 (2013.01); F15B 2211/324 (2013.01); F15B 2211/329 (2013.01); F15B 2211/50518 (2013.01); F15B 2211/50536 (2013.01); F15B 2211/513 (2013.01); F15B 2211/5151 (2013.01); F15B 2211/528 (2013.01); F15B 2211/57 (2013.01); F15B 2211/6054 (2013.01); F15B 2211/6055 (2013.01); F15B 2211/7053 (2013.01)
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 0582859 A1 19940216; EP 0582859 B1 19970129; AT E148534 T1 19970215; DE 59305313 D1 19970313; DE 9210646 U1 19931216; DK 0582859 T3 19970630; ES 2096809 T3 19970316
DOCDB simple family (application)
EP 93111555 A 19930719; AT 93111555 T 19930719; DE 59305313 T 19930719; DE 9210646 U 19920810; DK 93111555 T 19930719; ES 93111555 T 19930719