EP 3523120 B1 20200422 - ELECTRO-HYDRAULIC DRIVE UNIT
Title (en)
ELECTRO-HYDRAULIC DRIVE UNIT
Title (de)
ELEKTROHYDRAULISCHE ANTRIEBSEINHEIT
Title (fr)
GROUPE D'ENTRAÎNEMENT ÉLECTO-HYDRAULIQUE
Publication
Application
Priority
- DE 102016118854 A 20161005
- EP 2017073886 W 20170921
Abstract (en)
[origin: WO2018065226A1] The invention relates to an electro-hydraulic drive unit comprising a cylinder-piston arrangement (1) having a piston-side first hydraulic operating chamber (5) and a piston-rod-side second hydraulic operating chamber (6), a tank (4), a variable-speed-driven hydraulic pump (3) having a tank connection (T) and an operating connection (P), a valve arrangement connected between the operating connection (P) of the hydraulic pump (3) and between the cylinder-piston arrangement (1), a feeder valve (8) connected between the tank (4) and the first hydraulic operating chamber (5), and a machine control. By means of said machine control, switch valves (S1-S6) of the valve arrangement can be switched between an application of the first hydraulic operating chamber (5) and of the second hydraulic operating chamber (6) of the cylinder-piston arrangement (1) in the pump operation of the hydraulic pump (3) from the operating connection (P) thereof. According to the invention, a hydraulic decompression module (9) having a hydraulic accumulator (10) is provided, which can be connected via a line arrangement (L) to a the second hydraulic operating chamber (6) by means of a charging/discharging valve (14) arranged therein.
IPC 8 full level
B30B 15/16 (2006.01); B30B 15/20 (2006.01)
CPC (source: EP)
B30B 15/16 (2013.01); B30B 15/163 (2013.01); B30B 15/20 (2013.01)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
DE 102016118854 A1 20180405; EP 3523120 A1 20190814; EP 3523120 B1 20200422; WO 2018065226 A1 20180412
DOCDB simple family (application)
DE 102016118854 A 20161005; EP 17772687 A 20170921; EP 2017073886 W 20170921