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.: US14726658Application Date: 2015-06-01
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Publication No.: US09309646B2Publication Date: 2016-04-12
- Inventor: Kota Imanishi , Hiroyuki Chikugo , Shuuji Hori , Mitsumasa Akashi , Akira Hasebe , Shuki Akushichi , Nobumasa Takamatsu
- Applicant: KOMATSU LTD.
- 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
- Main IPC: B62D5/20
- IPC: B62D5/20 ; E02F9/22 ; B62D1/22 ; B62D5/09 ; B62D12/00 ; E02F9/08 ; B62D5/07 ; B62D5/28 ; B62D5/12 ; B62D5/18

Abstract:
A steering device for a wheel loader includes a handle for steering, a lever for steering, a steering cylinder, a steering valve that controls a direction of operating fluid to the steering cylinder, and a pump that supplies operating fluid to the steering cylinder via the steering valve. The steering device further includes a handle control valve that controls the supply direction of the operating fluid according the handle, a lever electromagnetic control valve that controls the supply direction of operating fluid according to the lever, and a handle prioritization valve that shuts off a pilot hydraulic pressure supplied from the lever electromagnetic control valve to the steering valve according to a pressure produced by operating fluid flowing through the handle control valve when the handle is operated. The handle prioritization valve includes a switching valve and a priority control valve switchable between a handle stage and a lever stage.
Public/Granted literature
- US20150259884A1 STEERING DEVICE FOR WHEEL LOADER Public/Granted day:2015-09-17
Information query
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