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Patent Searching and Data


Title:
WORK VEHICLE AND WORK VEHICLE CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2017/209058
Kind Code:
A1
Abstract:
Steering cylinders (21, 22) of a wheel loader (1) are hydraulically driven and perform, in response to an operation of a joystick lever (24), an articulation action that changes a steering angle θs of a front frame (11) with regard to a rear frame (12). A pilot valve (42) is connected to the joystick lever (24) and controls the flow rate of an oil that is provided to the steering cylinders (21, 22), so as to make the steering angle θs match a rotational angle θin. A force imparting part (27) imparts an assistive force or a counterforce to an operation of the joystick lever (24). On the basis of a deviation angle ±θ7, which is an example of a start timing of the articulation action, a control part (28) controls the force imparting part (27) so as to generate a resistance to an operation of the joystick lever.

Inventors:
TAKENAKA, Yuita (2-3-6 Akasaka, Minato-k, Tokyo 14, 〒1078414, JP)
NAKABAYASHI, Masanobu (2-3-6 Akasaka, Minato-k, Tokyo 14, 〒1078414, JP)
IKARI, Masanori (2-3-6 Akasaka, Minato-k, Tokyo 14, 〒1078414, JP)
Application Number:
JP2017/019935
Publication Date:
December 07, 2017
Filing Date:
May 29, 2017
Export Citation:
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Assignee:
KOMATSU LTD. (2-3-6, Akasaka Minato-k, Tokyo 14, 〒1078414, JP)
International Classes:
B62D5/28; B62D5/09; B62D6/00; B62D12/00
Foreign References:
JPH01105723A1989-04-24
JPH01321664A1989-12-27
Attorney, Agent or Firm:
SHINJYU GLOBAL IP (South Forest Bldg, 1-4-19 Minamimori-machi, Kita-ku, Osaka-sh, Osaka 54, 〒5300054, JP)
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