公开(公告)号：US09719530B2

公开(公告)日：2017-08-01

申请号：US14783556

申请日：2014-04-09

申请人： TTControl GMBH

发明人： Marcus Specks ,  Marcus Pfeiffer ,  Stephan Grün ,  Reiner Vierkotten ,  Joseph Schnittker ,  Andreas Lehmann ,  Wolfgang Tebeek ,  Wolfgang Kemmetmüller ,  Johannes Henikl ,  Andreas Kugi

IPC分类号： F15B11/00 ,  E04G21/04 ,  F15B20/00 ,  F15B11/08

CPC分类号： F15B11/003 ,  E04G21/0436 ,  E04G21/0454 ,  E04G21/0463 ,  F15B11/08 ,  F15B20/005 ,  F15B2211/30515 ,  F15B2211/30565 ,  F15B2211/327 ,  F15B2211/8636 ,  F15B2211/8757

摘要： An electrohydraulic control circuit for driving a hydraulically actuated actuating element (5, 6), by means of which a segment (5.3) of a manipulator, in particular of a large manipulator for truck-mounted concrete pumps, can be adjusted in terms of its orientation, wherein there are provided an electrically driven first valve (2.4), which is connected to hydraulic working lines of the actuating element (5.6) for the drive thereof, and leak-free check valves (2.5, 2.6) provided in the working lines of the actuating element (5.6), which valves are arranged on the actuating element (5.6) or on the segment (5.3) associated with this actuating element (5.6) and can be released for the normal operation of the actuating element (5.6), wherein the release of the check valves (2.5, 2.6) is driven by an electronic control unit (ECU) separate from the first valve (2.4) and the check valves (2.5, 2.6).