EP 1592638 B1 20121107 - DAMPING DEVICE FOR A HYDRAULIC CIRCUIT
Title (en)
DAMPING DEVICE FOR A HYDRAULIC CIRCUIT
Title (de)
DÄMPFUNGSVORRICHTUNG FÜR EINE HYDRAULISCHEKREIS
Title (fr)
DISPOSITIF AMORTISSEUR PUR UN CIRCUIT HYDRAULIQUE
Publication
Application
Priority
- SE 2004000147 W 20040205
- SE 0300395 A 20030214
Abstract (en)
[origin: WO2004071929A1] Damping device (5) for a hydraulic system of a working machine, for damping pressure oscillations in the hydraulic system including a hydraulic cylinder (1), said damping device having a first accumulator (6), having a first preloading pressure P1, and a second accumulator (7), having a second preloading pressure Per wherein P1<P2, said accumulators being in hydraulic connection with the hydraulic cylinder. According to the invention, the first accumulator is connected to the hydraulic cylinder via a first throttle valve (8), which has a flow opening having a flow area A1, and the second accumulator is connected to the hydraulic cylinder via a second throttle valve (9), which has a flow opening having a flow area A2, wherein A1>A2. The invention also relates to a hydraulic system including such a damping device.
IPC 8 full level
B66C 13/06 (2006.01); E02F 9/22 (2006.01); F15B 1/02 (2006.01)
CPC (source: EP)
B66C 13/06 (2013.01); E02F 9/2207 (2013.01); F15B 1/021 (2013.01)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2004071929 A1 20040826; WO 2004071929 A8 20050113; EP 1592638 A1 20051109; EP 1592638 B1 20121107; SE 0300395 D0 20030214; SE 0300395 L 20040815; SE 524812 C2 20041005
DOCDB simple family (application)
SE 2004000147 W 20040205; EP 04708534 A 20040205; SE 0300395 A 20030214