JPS641660A - Hydraulic circuit for working vehicle - Google Patents
Hydraulic circuit for working vehicleInfo
- 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
Links
- 230000006837 decompression Effects 0.000 abstract 2
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
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6428367U (en) * | 1987-08-12 | 1989-02-20 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6428367U (en) * | 1987-08-12 | 1989-02-20 |
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