Title:
MOTOR GRADER
Document Type and Number:
WIPO Patent Application WO/2018/235523
Kind Code:
A1
Abstract:
A pair of lift cylinders (44, 45) suspend a working machine (4) relative to a vehicle body and changes the height of the working machine (4) relative to the vehicle body. An accumulator (72a) is connected to the head-side circuit of the lift cylinder (44). A switching valve (71a) is connected between the lift cylinder (44) and the accumulator (72a). A controller (74) controls the opening and closing of the switching valve (71a) on the basis of the height of the working machine (4) relative to the vehicle body.
Inventors:
HARADA MUNEO (JP)
Application Number:
PCT/JP2018/020126
Publication Date:
December 27, 2018
Filing Date:
May 25, 2018
Export Citation:
Assignee:
KOMATSU MFG CO LTD (JP)
International Classes:
E02F3/85
Foreign References:
JPH05339959A | 1993-12-21 | |||
JPS63185849U | 1988-11-29 |
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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