Invention Grant
- Patent Title: Work machine
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Application No.: US17233698Application Date: 2021-04-19
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Publication No.: US11519157B2Publication Date: 2022-12-06
- Inventor: Takuya Uemura , Yusuke Yamazaki
- Applicant: KOMATSU LTD.
- Applicant Address: JP Tokyo
- Assignee: KOMATSU LTD.
- Current Assignee: KOMATSU LTD.
- Current Assignee Address: JP Tokyo
- Agency: Faegre Drinker Biddle & Reath LLP
- Priority: JPJP2020-146962 20200901
- Main IPC: E02F9/22
- IPC: E02F9/22

Abstract:
There is provided a work machine that can avoid an unintended movement of a blade. A crawler dozer includes a controller. The controller controls EPC valves. A left tilt cylinder and a right tilt cylinder are asymmetrically attached to a blade. The EPC valves control direction and flow rate of supply of hydraulic oil to the right tilt cylinder. The EPC valves control direction and flow rate of supply of the hydraulic oil to the left tilt cylinder. The controller controls the EPC valves and the EPC valves to extend or contract the left tilt cylinder and the right tilt cylinder at different rates.
Public/Granted literature
- US20220064906A1 WORK MACHINE Public/Granted day:2022-03-03
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