JPS6418728A - Hydraulic circuit structure of four-wheel drive type working vehicle - Google Patents
Hydraulic circuit structure of four-wheel drive type working vehicleInfo
- Publication number
- JPS6418728A JPS6418728A JP17558887A JP17558887A JPS6418728A JP S6418728 A JPS6418728 A JP S6418728A JP 17558887 A JP17558887 A JP 17558887A JP 17558887 A JP17558887 A JP 17558887A JP S6418728 A JPS6418728 A JP S6418728A
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic
- working device
- relief valve
- drainage
- path
- 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 make it possible to maintain a 4 wheel driving state by supplying the drainage drained from a relief valve to the hydraulic clutch of a front wheel transmission system when a hydraulic working device is overloaded and the relief valve is opened resulting in the stop of the working device. CONSTITUTION:The hydraulic operating fluid from a pump 22 is supplied to the control valves 26 and 27 for the hydraulic cylinders 9 and 20 of a hydraulic working device 8 respectively through an oil supply path 25. The first drainage path 29 from the control valve 27 is connected to the control valve 24 for the hydraulic clutches 18 and 19 of a front wheel speed reduction gear 10 ... In such constitution the second drainage path 31 from the first relief valve 28 supporting the circuit pressure of the working device 8 arranged in the line of an oil supply path 25 is connected to the first drainage path 29 through a check valve 32. When the working device 8 is overloaded and the first relief valve 28 is opened resulting in the stop of the working device 8, the drainage from the first relief valve 28 is supplied to each of the hydraulic clutches 18 and 19 through the second drainage path 31.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17558887A JPS6418728A (en) | 1987-07-14 | 1987-07-14 | Hydraulic circuit structure of four-wheel drive type working vehicle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17558887A JPS6418728A (en) | 1987-07-14 | 1987-07-14 | Hydraulic circuit structure of four-wheel drive type working vehicle |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6418728A true JPS6418728A (en) | 1989-01-23 |
Family
ID=15998706
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17558887A Pending JPS6418728A (en) | 1987-07-14 | 1987-07-14 | Hydraulic circuit structure of four-wheel drive type working vehicle |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6418728A (en) |
-
1987
- 1987-07-14 JP JP17558887A patent/JPS6418728A/en active Pending
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US2336911A (en) | Power transmission and steering control for traction devices | |
JPS6474153A (en) | Wheel brake control device | |
GB2065244A (en) | Hydraulic control system for two/four wheel drive transfer gearbox | |
ES487486A1 (en) | Anti-stall controller. | |
JPS6467478A (en) | Power assist-steering gear | |
GB521741A (en) | Combined system of shock absorbers and device for overcoming the centrifugal force of a motor vehicle | |
EP0768478A3 (en) | Automatic clutch device for hydrostatic continuously variable transmission | |
EP0404946A4 (en) | Hydraulic circuit device of construction vehicle | |
JPS6418728A (en) | Hydraulic circuit structure of four-wheel drive type working vehicle | |
CA1221559A (en) | Control system for hydraulic operating fluid pressure | |
US3719102A (en) | Control system for hydraulic clutches of reversible gear-shift mechanism | |
ATE172009T1 (en) | DRIVE DEVICE FOR A MOTOR VEHICLE, IN PARTICULAR A CONSTRUCTION MACHINE | |
JPS6470268A (en) | Fluid-pressure steering system | |
JPS6418729A (en) | Hydraulic circuit structure of four-wheel drive type working vehicle | |
EP0293195A3 (en) | System for controlling the pressure of oil for a continuously variable transmission | |
KR850007952A (en) | Differential device with differential limiting device | |
JPS61252922A (en) | Hydraulic clutch structure in farm working machine | |
SU1724823A1 (en) | Drive for motor grader front driving wheels | |
US4574838A (en) | Means for saving energy in a hydraulic circuit | |
JPH0798457B2 (en) | Hydraulic circuit for switching drive of four-wheel drive type vehicle | |
SU1239235A1 (en) | Hydraulic drive of amelioration machine | |
EP0314637B1 (en) | A hydraulic operating system for tractors | |
JPH03121937A (en) | Two-wheel and four-wheel drive selector device for transfer device | |
SU1199690A1 (en) | Vehicle steering gear system | |
SU1537573A1 (en) | Hydraulic system of vehicle hydromechanical transmission |