Title:
WORK VEHICLE
Document Type and Number:
WIPO Patent Application WO/2018/034017
Kind Code:
A1
Abstract:
The purpose of the present invention is to suppress lug down that occurs during a forward/backward movement switching operation or excavation work, and to enable the movement of a work vehicle to be made smoother. Provided is a work vehicle comprising a work device that is operated by hydraulic oil ejected from a main pump, an operation device that operates the work device, auxiliary equipment that is operated by hydraulic oil from an accessory pump, a priority valve that can be switched between a normal position at which the hydraulic oil from the accessory pump is guided to the accessory equipment and a confluence position at which the hydraulic oil from the accessory pump is guided to the operation device, and a forward/backward movement operation device, wherein: the priority valve is maintained in the normal position when either the forward movement direction or backward movement direction indicated by the forward/backward movement operation device and the movement direction of the work vehicle do not match; and the priority valve is switched to the confluence position when either the forward movement direction or backward movement direction indicated by the forward/backward movement operation device and the movement direction of the work vehicle do match and the operation device is being operated.
Inventors:
KAMIYA JUMPEI (JP)
TANAKA HIDEYUKI (JP)
TANAKA HIDEYUKI (JP)
Application Number:
PCT/JP2017/008377
Publication Date:
February 22, 2018
Filing Date:
March 02, 2017
Export Citation:
Assignee:
KCM CORP (JP)
International Classes:
F15B11/02; E02F9/22
Foreign References:
| JPH0776859A | 1995-03-20 | |||
| JP2015158099A | 2015-09-03 |
Other References:
See also references of EP 3425212A4
Attorney, Agent or Firm:
THE PATENT BODY CORPORATE TAKEWA INTERNATIONAL PATENT OFFICE (JP)
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