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Title:
WORK MACHINE
Document Type and Number:
WIPO Patent Application WO/2019/003289
Kind Code:
A1
Abstract:
A plurality of electromagnetic proportional control valves control the pressure of pilot oil generated by the operation of a first operation lever device (41) and a second operation lever device (42), and adjust the flow rate of operation oil supplied to a hydraulic cylinder in accordance with the pressure of the pilot oil. The plurality of electromagnetic proportional control valves are divided into a first valve block (71) that includes at least one electromagnet proportional control valve, and a second valve block (72) that includes at least one electromagnetic proportional control valve. The first valve block (71) and the second valve block (72) are disposed so as to be separated from each other.

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Inventors:
YAMADA TAKEO (JP)
NAKAMURA SHOTA (JP)
NAKASHIMA GOUSUKE (JP)
Application Number:
PCT/JP2017/023495
Publication Date:
January 03, 2019
Filing Date:
June 27, 2017
Export Citation:
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Assignee:
KOMATSU MFG CO LTD (JP)
International Classes:
E02F9/00
Foreign References:
JP2005248569A2005-09-15
JPH10292425A1998-11-04
JP2001032331A2001-02-06
US20050166429A12005-08-04
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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