JPS6416428A - Hydraulic circuit structure for four-wheel-drive type working vehicle - Google Patents
Hydraulic circuit structure for four-wheel-drive type working vehicleInfo
- Publication number
- JPS6416428A JPS6416428A JP17341387A JP17341387A JPS6416428A JP S6416428 A JPS6416428 A JP S6416428A JP 17341387 A JP17341387 A JP 17341387A JP 17341387 A JP17341387 A JP 17341387A JP S6416428 A JPS6416428 A JP S6416428A
- Authority
- JP
- Japan
- Prior art keywords
- oil passage
- wheel
- circuit structure
- hydraulic circuit
- drive type
- 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
Landscapes
- Arrangement And Driving Of Transmission Devices (AREA)
Abstract
PURPOSE:To prevent the lowering of operating pressure to the hydraulic clutch of a front-wheel power transmission system by providing a bypass oil passage for connecting a feeding oil passage and a discharging oil passage and providing a throttle part in the bypass oil passage. CONSTITUTION:A discharging oil passage 29 from a second control valve 27 is connected to the control valve 24 for the first and second hydraulic clutches 18, 19 of a front wheel speed change gear 10. And, a second relief valve 30 is provided to maintain the clutch pressure of the first and second hydraulic clutches 18, 19. This second relief valve 30 is set to be opened at a lower pressure than a first relief valve 18. A part in which a feeding oil passage 25 is connected to a front loader device 8 and a part in which the discharging oil passage 29 is connected to the front loader device are formed into one block type, and the feeding oil passage 25 and the discharging oil passage 29 are connected to this block part 32 while a bypass oil passage 31 with a throttle part 31a is provided in it.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17341387A JPS6416428A (en) | 1987-07-10 | 1987-07-10 | Hydraulic circuit structure for four-wheel-drive type working vehicle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17341387A JPS6416428A (en) | 1987-07-10 | 1987-07-10 | Hydraulic circuit structure for four-wheel-drive type working vehicle |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6416428A true JPS6416428A (en) | 1989-01-19 |
Family
ID=15959974
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17341387A Pending JPS6416428A (en) | 1987-07-10 | 1987-07-10 | Hydraulic circuit structure for four-wheel-drive type working vehicle |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6416428A (en) |
-
1987
- 1987-07-10 JP JP17341387A patent/JPS6416428A/en active Pending
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