JPS641660A - Hydraulic circuit for working vehicle - Google Patents

Hydraulic circuit for working vehicle

Info

Publication number
JPS641660A
JPS641660A JP62156883A JP15688387A JPS641660A JP S641660 A JPS641660 A JP S641660A JP 62156883 A JP62156883 A JP 62156883A JP 15688387 A JP15688387 A JP 15688387A JP S641660 A JPS641660 A JP S641660A
Authority
JP
Japan
Prior art keywords
oil
valve
pressure
speed change
change hydraulic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP62156883A
Other languages
Japanese (ja)
Other versions
JPH011660A (en
Inventor
Masaru Machida
Shigekazu Hasegawa
Yoshimi Ota
Akio Hattori
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kubota Corp
Kubota Seiki Co Ltd
Original Assignee
Kubota Corp
Kubota Seiki Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kubota Corp, Kubota Seiki Co Ltd filed Critical Kubota Corp
Priority to JP62-156883A priority Critical patent/JPH011660A/en
Priority claimed from JP62-156883A external-priority patent/JPH011660A/en
Publication of JPS641660A publication Critical patent/JPS641660A/en
Publication of JPH011660A publication Critical patent/JPH011660A/en
Pending legal-status Critical Current

Links

Landscapes

  • Power Steering Mechanism (AREA)
  • Gear-Shifting Mechanisms (AREA)
  • Auxiliary Drives, Propulsion Controls, And Safety Devices (AREA)

Abstract

PURPOSE: To suppress pressure drop in No.1 oil path on the speed change hydraulic clutch side by actuating a valve furnished on No.2 oil path of PS when a pressure oil exceeding a certain amount flows in the No.1 oil with gear shifting.
CONSTITUTION: Through an unload valve 31, the pressure oil from a pump 24 is parallelly supplied to No.1 oil line a for the speed change hydraulic and No.2 oil line b of PS system. A decompression valve 33 for setting of circuit pressure is installed in the No.1 oil line a which supplies pressure oil to the speed change hydraulic system, and an orifice 34 is provided downstream of this valve, and a pilot selector valve 35 is connected which is actuated by the differential pressure between in front of and behind this orifice 34. Another decompression valve 36 and a valve mechanism 37 for restriction of pressure oil supply are mounted on the No.2 oil line b for supply of pressure oil to the PS system, wherein the valve mechanism is shut with impression of the pilot pressure from the pilot selector valve 35.
COPYRIGHT: (C)1989,JPO&Japio
JP62-156883A 1987-06-24 Hydraulic circuit structure of work vehicle Pending JPH011660A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62-156883A JPH011660A (en) 1987-06-24 Hydraulic circuit structure of work vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62-156883A JPH011660A (en) 1987-06-24 Hydraulic circuit structure of work vehicle

Publications (2)

Publication Number Publication Date
JPS641660A true JPS641660A (en) 1989-01-06
JPH011660A JPH011660A (en) 1989-01-06

Family

ID=

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6428367U (en) * 1987-08-12 1989-02-20

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6428367U (en) * 1987-08-12 1989-02-20

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