发明公开
- 专利标题： BENDING CONSTRUCTION VEHICLE
- 专利标题（中）： 弯曲的施工车辆
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申请号： EP07831374.9申请日： 2007-11-07
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公开(公告)号： EP2090496A1公开(公告)日： 2009-08-19
- 发明人: TANAKA, Toshio , NAKAMURA, Tsuyoshi
- 申请人： Hitachi Construction Machinery Co., Ltd , TCM Corporation
- 申请人地址： 5-1, Koraku 2-chome, Bunkyo-ku Tokyo 112-0004 JP
- 专利权人： Hitachi Construction Machinery Co., Ltd,TCM Corporation
- 当前专利权人： Hitachi Construction Machinery Co., Ltd,TCM Corporation
- 当前专利权人地址： 5-1, Koraku 2-chome, Bunkyo-ku Tokyo 112-0004 JP
- 代理机构： Hatzmann, Martin
- 优先权： JP2006302859 20061108
- 国际公布： WO2008056703 20080515
- 主分类号： B62D5/28
- IPC分类号： B62D5/28 ; B62D5/07 ; B62D5/09 ; E02F9/20
摘要：
[PROBLEM]
To provide an articulated vehicle which permits steering control not only suited for traveling on general roadways but also suited for work at construction sites.
[SOLUTION]
An articulated construction vehicle is provided with an articulated, self-propelled body 1, body-articulating hydraulic cylinders 2 for articulating the self-propelled body, a pilot-operated directional control valve 5 for controlling a flow of pressure oil to the body-articulating hydraulic cylinders 2, and a steering-wheel-operated control device 6 for outputting a pilot signal to corresponding one of signal-receiving ports of a directional control valve 7 by rotational operation of a steering wheel 7A. The articulated construction vehicle is also provided with a lever-operated, electrical control device 10 for outputting an electrical signal by tilt operation of a lever 11A, a controller 11 for being inputted with the electrical signal from the control device 10 to output an electrical signal concerning the operation of the lever 11A, a signal conversion means for converting the electrical signal into a pilot signal and outputting the pilot signal to corresponding one of the signal-receiving ports of the directional control valve 5 to switch the control valve 5, and a selection means of an operation system that operation of the directional control valve 5 by the rotational operation of the steering wheel 7A and operation of the directional control valve 5 by the tilt-operation of the lever 11A can be selectively performed.
To provide an articulated vehicle which permits steering control not only suited for traveling on general roadways but also suited for work at construction sites.
[SOLUTION]
An articulated construction vehicle is provided with an articulated, self-propelled body 1, body-articulating hydraulic cylinders 2 for articulating the self-propelled body, a pilot-operated directional control valve 5 for controlling a flow of pressure oil to the body-articulating hydraulic cylinders 2, and a steering-wheel-operated control device 6 for outputting a pilot signal to corresponding one of signal-receiving ports of a directional control valve 7 by rotational operation of a steering wheel 7A. The articulated construction vehicle is also provided with a lever-operated, electrical control device 10 for outputting an electrical signal by tilt operation of a lever 11A, a controller 11 for being inputted with the electrical signal from the control device 10 to output an electrical signal concerning the operation of the lever 11A, a signal conversion means for converting the electrical signal into a pilot signal and outputting the pilot signal to corresponding one of the signal-receiving ports of the directional control valve 5 to switch the control valve 5, and a selection means of an operation system that operation of the directional control valve 5 by the rotational operation of the steering wheel 7A and operation of the directional control valve 5 by the tilt-operation of the lever 11A can be selectively performed.
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