Title:
WORK VEHICLE
Document Type and Number:
Japanese Patent JP2016037218
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To prevent operation of a control handle from becoming heavy even in an idling state of an engine in a torque generator for assisting steering operation of front wheels.SOLUTION: A torque generator 26 comprises: an input shaft 27; an output shaft 28 engaged with and connected to the input shaft 27; a change-over valve 34 operated by the input shaft 27; and a hydraulic motor 35 actuated by a hydraulic oil of the change-over valve 34 for applying power to the output shaft 28. A work vehicle comprises: a suction oil passage 40 for supplying a hydraulic oil of a hydraulic pump 39 driven by an engine 19 to the change-over valve 34; and a discharge oil passage 44 for discharging the hydraulic oil of the change-over valve 34. A bypass oil passage 44 is connected between the suction oil passage 40 and the discharge oil passage 41. The bypass oil passage 44 is provided with a check valve 45 for blocking the flow of the hydraulic oil from the suction oil passage 40 to the discharge oil passage 41, and allowing the flow of the hydraulic oil from the discharge oil passage 41 to the suction oil passage 40.SELECTED DRAWING: Figure 2
Inventors:
ANDO TOMOKAZU
Application Number:
JP2014162680A
Publication Date:
March 22, 2016
Filing Date:
August 08, 2014
Export Citation:
Assignee:
KUBOTA KK
International Classes:
B62D5/07; B62D5/083; F15B9/14
Attorney, Agent or Firm:
Patent business corporation r&c