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Patent Searching and Data


Title:
WORK VEHICLE
Document Type and Number:
WIPO Patent Application WO/2019/198183
Kind Code:
A1
Abstract:
A work vehicle comprises: a hydraulic pump driven by an engine; a hydraulic actuator driven by hydraulic fluid supplied from the hydraulic pump; a switching valve that can switch from a first state in which the hydraulic fluid supplied from the hydraulic pump is supplied to a first channel or a second state in which the hydraulic fluid supplied from the hydraulic pump is supplied to a second channel to the other state; an operation limitation device that can generate an operation signal to limit driving the hydraulic actuator; and a control device that controls the switching valve. The control device has an operation signal acquisition unit that acquires the operation signal, and a command output unit that outputs to the switching valve, on the basis of the operation signal, a control command that limits driving the hydraulic actuator while the engine is running.

Inventors:
TANAKA, Yushi (2-3-6 Akasaka, Minato-k, Tokyo 14, 〒1078414, JP)
MAEDA, Ryosuke (2-3-6 Akasaka, Minato-k, Tokyo 14, 〒1078414, JP)
IMAIZUMI, Masaaki (2-3-6 Akasaka, Minato-k, Tokyo 14, 〒1078414, JP)
Application Number:
JP2018/015295
Publication Date:
October 17, 2019
Filing Date:
April 11, 2018
Export Citation:
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Assignee:
KOMATSU LTD. (2-3-6, Akasaka Minato-k, Tokyo 14, 〒1078414, JP)
International Classes:
E02F9/20; B60S5/00; B62D5/07; E02F3/34; F15B20/00
Domestic Patent References:
WO1998002322A11998-01-22
Foreign References:
JP2014202244A2014-10-27
JPH05208621A1993-08-20
JP2016194331A2016-11-17
JPH0642506U1994-06-07
JP2009068164A2009-04-02
JP2001234559A2001-08-31
JP2011106269A2011-06-02
JPH1122226A1999-01-26
JP2000072395A2000-03-07
JP2002106508A2002-04-10
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (Toranomon Mitsui Building, 8-1 Kasumigaseki 3-chome, Chiyoda-k, Tokyo 13, 〒1000013, JP)
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