公开(公告)号：EP1736672B1

公开(公告)日：2012-12-19

申请号：EP06115088.4

申请日：2006-06-07

申请人： Kobelco Construction Machinery Co., Ltd.

发明人： Ueda, Koji c/o Kobelco Construction

IPC分类号： F15B20/00 ,  F15B19/00

CPC分类号： F15B20/00 ,  F15B19/005 ,  F15B2211/3138 ,  F15B2211/31558 ,  F15B2211/329 ,  F15B2211/355 ,  F15B2211/634 ,  F15B2211/6346 ,  F15B2211/6658 ,  F15B2211/7135 ,  F15B2211/87 ,  F15B2211/8755

公开(公告)号：EP1736672A3

公开(公告)日：2011-11-09

申请号：EP06115088.4

申请日：2006-06-07

申请人： Kobelco Construction Machinery Co., Ltd.

发明人： Ueda, Koji c/o Kobelco Construction

IPC分类号： F15B20/00 ,  F15B19/00

CPC分类号： F15B20/00 ,  F15B19/005 ,  F15B2211/3138 ,  F15B2211/31558 ,  F15B2211/329 ,  F15B2211/355 ,  F15B2211/634 ,  F15B2211/6346 ,  F15B2211/6658 ,  F15B2211/7135 ,  F15B2211/87 ,  F15B2211/8755

摘要： A hydraulic circuit for a working machine includes hydraulic actuators (9,10) which respectively drive a plurality of kinds of working devices and which are driven by a drive circuit having circuit states that correspond to the working devices, a directional control valve unit (19) which, when one of the working devices is attached to the attachment, switches in response to a signal from a controller (21) to select one of the circuit states, a detection sensor (23) that detects the actual circuit state, and a display (24) operated by the controller. The controller activates the display when the detected actual circuit state and the selected circuit state do not match.