Invention Grant
- Patent Title: Steering device for wheel loader
- Patent Title (中): 轮式装载机转向装置
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Application No.: US14122405Application Date: 2012-04-19
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Publication No.: US09085319B2Publication Date: 2015-07-21
- Inventor: Kota Imanishi , Hiroyuki Chikugo , Shuuji Hori , Mitsumasa Akashi , Akira Hasebe , Shuki Akushichi , Nobumasa Takamatsu
- Applicant: Kota Imanishi , Hiroyuki Chikugo , Shuuji Hori , Mitsumasa Akashi , Akira Hasebe , Shuki Akushichi , Nobumasa Takamatsu
- Applicant Address: JP Tokyo
- Assignee: KOMATSU LTD.
- Current Assignee: KOMATSU LTD.
- Current Assignee Address: JP Tokyo
- Agency: Global IP Counselors, LLP
- Priority: JP2012-076093 20120329
- International Application: PCT/JP2012/060541 WO 20120419
- International Announcement: WO2013/145334 WO 20131003
- Main IPC: B62D5/09
- IPC: B62D5/09 ; B62D5/07 ; B62D1/22 ; B62D12/00 ; E02F9/08 ; E02F9/22 ; B62D5/28

Abstract:
A steering device for a wheel loader includes a rotatable handle, a tiltable lever, a steering cylinder, a steering valve, a pump, a handle control valve, a lever control valve, and a handle prioritization valve. The steering valve controls a supply direction of operating fluid to the steering cylinder with pilot hydraulic pressure. The pump supplies operating fluid to the steering cylinder via the steering valve. The handle and lever control valves supply pilot hydraulic pressure to control the supply direction to the steering valve according to handle rotation and lever tilt, respectively. The handle prioritization valve shuts off the pilot hydraulic pressure supplied from the lever control valve to the steering valve according to a differential pressure or an absolute pressure in a hydraulic circuit produced due to operating fluid flowing through the handle control valve when the handle is operated.
Public/Granted literature
- US20140083792A1 STEERING DEVICE OF WHEEL LOADER Public/Granted day:2014-03-27
Information query
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