EP 1225281 B1 20080116 - Hydraulic control, in particular for controlling the turning mechanism of an excavator
Title (en)
Hydraulic control, in particular for controlling the turning mechanism of an excavator
Title (de)
Hydraulische Steuerung, insbesondere zum Ansteuern des Drehwerks eines Baggers
Title (fr)
Commande hydraulique, notamment pour commander le mécanisme rotatif d'une excavatrice
Publication
Application
Priority
- DE 10102986 A 20010123
- DE 10110935 A 20010307
Abstract (en)
[origin: EP1225281A1] The hydraulic control system (1), especially for the rotary drive at an excavator, has two control valves (71,72) in the auxiliary control lines (75,76) which branch from the control lines (33,34), and are connected to an auxiliary pressure supply. Their control inputs are linked to the control lines through control branch lines (83,84). They are operated by the control pressure in the control lines on one side and, on the other side, by a piston position transmitter (78). On the operation of the manual control (53) from the active to a neutral setting, the setting pressure chamber (11,12) is given an auxiliary pressure to move the setting piston (7) which had been pushed into the active setting.
IPC 8 full level
E02F 9/12 (2006.01); E02F 9/22 (2006.01); F15B 11/05 (2006.01)
CPC (source: EP)
E02F 9/123 (2013.01); E02F 9/128 (2013.01); E02F 9/2232 (2013.01); E02F 9/2296 (2013.01)
Designated contracting state (EPC)
DE FR GB IT SE
DOCDB simple family (publication)
EP 1225281 A1 20020724; EP 1225281 B1 20080116; DE 50113501 D1 20080306
DOCDB simple family (application)
EP 01128050 A 20011126; DE 50113501 T 20011126