Invention Grant
- Patent Title: Articulated construction vehicle including a lever-operated electrical Control device
- Patent Title (中): 铰接式施工车辆，包括杠杆式电气控制装置
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Application No.: US12513989Application Date: 2007-11-07
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Publication No.: US08087489B2Publication Date: 2012-01-03
- Inventor: Toshio Tanaka , Tsuyoshi Nakamura
- Applicant: Toshio Tanaka , Tsuyoshi Nakamura
- Applicant Address: JP Tokyo
- Assignee: Hitachi Construction Machinery Co., Ltd.
- Current Assignee: Hitachi Construction Machinery Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Crowell & Moring LLP
- Priority: JP2006-302859 20061108
- International Application: PCT/JP2007/071643 WO 20071107
- International Announcement: WO2008/056703 WO 20080515
- Main IPC: B62D5/06
- IPC: B62D5/06
Abstract:
An articulated construction vehicle is provided with an articulated, self-propelled body, body-articulating hydraulic cylinders for articulating the self-propelled body, a pilot-operated directional control valve for controlling a flow of pressure oil to the body-articulating hydraulic cylinders, and a steering-wheel-operated control device for outputting a pilot signal to corresponding one of signal-receiving ports of a directional control valve by rotational operation of a steering wheel. The articulated construction vehicle includes a lever-operated, electrical control device for outputting an electrical signal by tilt operation of a lever, a controller for receiving the electrical signal from the control device to output an electrical signal concerning the operation of the lever, a signal converter for converting the electrical signal into a pilot signal and outputting the pilot signal to a corresponding signal-receiving port of the directional control valve to switch the control valve, and a selector of an operation system.
Public/Granted literature
- US20100051376A1 Bending Construction Vehicle Public/Granted day:2010-03-04
Information query
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