EP 3443182 B1 20220126 - ELECTROHYDRAULIC CONTROL CIRCUIT FOR A LARGE MANIPULATOR
Title (en)
ELECTROHYDRAULIC CONTROL CIRCUIT FOR A LARGE MANIPULATOR
Title (de)
ELEKTROHYDRAULISCHER STEUERKREIS FÜR EINEN GROSSMANIPULATOR
Title (fr)
CIRCUIT DE COMMANDE ÉLECTROHYDRAULIQUE POUR MANIPULATEUR DE GRANDE TAILLE
Publication
Application
Priority
- DE 102016106616 A 20160411
- EP 2017058510 W 20170410
Abstract (en)
[origin: WO2017178413A1] The invention relates to an electrohydraulic control circuit (1) for actuating a hydraulically actuated drive assembly (2, 2a, 2b, 2c, 2d), by means of which the orientation of a mast segment (3, 3a, 3b, 3c, 3d) of a manipulator (4), in particular of a large manipulator for truck-mounted concrete pumps, can be adjusted, having an electrically actuated proportional valve (28) which is connected to hydraulic operating lines (29, 30) of the drive assembly (2, 2a, 2b, 2c, 2d) in order to actuate it during normal operation, wherein the proportional valve (28) is connected to a pressure supply line (24) and to a return line (25), wherein, for emergency operation, an emergency valve (36) is connected to the hydraulic operating lines (29, 30) of the drive assembly (2, 2a, 2b, 2c, 2d) in order to actuate it during emergency operation. It is an object of the invention to specify a control circuit and a manipulator which makes reliable emergency operation possible in the event of the failure of the regular control circuit components. To this end, the invention proposes that, in emergency operation, the emergency valve (36) is actuated via an emergency operating unit (56). As an alternative or in addition to this, the emergency valve (36) can be connected to a further pressure supply line (26) which is connected to an emergency pressure supply unit (8), and as an alternative or in addition, furthermore, the emergency valve (36) can be connected to a further return line. Moreover, the invention relates to a manipulator (4), in particular a large manipulator for truck-mounted concrete pumps.
IPC 8 full level
E04G 21/04 (2006.01); F15B 15/20 (2006.01); F15B 20/00 (2006.01)
CPC (source: EP US)
E04G 21/0436 (2013.01 - EP US); E04G 21/0445 (2013.01 - EP US); F15B 15/202 (2013.01 - EP US); F15B 20/00 (2013.01 - EP US); F15B 13/10 (2013.01 - US); F15B 2211/20576 (2013.01 - EP US); F15B 2211/30515 (2013.01 - EP US); F15B 2211/30565 (2013.01 - EP US); F15B 2211/6313 (2013.01 - EP US); F15B 2211/8633 (2013.01 - EP US); F15B 2211/8636 (2013.01 - EP US); F15B 2211/8757 (2013.01 - EP US)
Citation (examination)
- WO 2010031389 A1 20100325 - WILHELM KARMANN GMBH I L [DE], et al
- DE 19511501 A1 19961002 - DANFOSS AS [DK]
- WO 2015162229 A1 20151029 - PUTZMEISTER ENGINEERING GMBH [DE]
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 102016106616 A1 20171012; DE 102016106616 B4 20230706; CN 109312569 A 20190205; EP 3443182 A1 20190220; EP 3443182 B1 20220126; US 10900244 B2 20210126; US 2019119934 A1 20190425; WO 2017178413 A1 20171019
DOCDB simple family (application)
DE 102016106616 A 20160411; CN 201780035090 A 20170410; EP 17720371 A 20170410; EP 2017058510 W 20170410; US 201716092539 A 20170410