Title:
MOBILE AGRICULTURAL MACHINE
Document Type and Number:
Japanese Patent JP2023037907
Kind Code:
A
Abstract:
To provide a mobile agricultural machine capable of reducing a load on a hydraulic pump.SOLUTION: A tractor has, in a hydraulic control circuit 20: a hydraulic circuit 40 for power steering that hydraulically controls a power steering mechanism based on a hydraulic pressure supplied from a hydraulic pump 21; and a hydraulic circuit 60 for front wheel acceleration that hydraulically controls a front wheel accelerating mechanism based on a back pressure of the hydraulic circuit 40 for power steering. The hydraulic circuit 60 for front wheel acceleration has: a safety valve 62 that discharges a hydraulic pressure when the back pressure becomes equal to or higher than a predetermined pressure; and a front wheel acceleration switching valve 61. The front wheel acceleration switching valve 61 is switched between an accelerating position 61A for increasing a rotating speed of a front wheel by supplying the back pressure to a hydraulic servo 51 of the front wheel accelerating mechanism and a normal position 61B for discharging the back pressure and a hydraulic pressure of the hydraulic servo 51.SELECTED DRAWING: Figure 4
Inventors:
TSUJI YASUHITO
Application Number:
JP2021144738A
Publication Date:
March 16, 2023
Filing Date:
September 06, 2021
Export Citation:
Assignee:
MITSUBISHI MAHINDRA AGRICULTURAL MACHINERY CO LTD
International Classes:
B62D5/07; A01B69/00; B62D11/08
Attorney, Agent or Firm:
Patent Attorney Corporation Chikajima International Patent Office