JPS5657522A - Hydraulic type four wheel drive tractor - Google Patents
Hydraulic type four wheel drive tractorInfo
- Publication number
- JPS5657522A JPS5657522A JP13434079A JP13434079A JPS5657522A JP S5657522 A JPS5657522 A JP S5657522A JP 13434079 A JP13434079 A JP 13434079A JP 13434079 A JP13434079 A JP 13434079A JP S5657522 A JPS5657522 A JP S5657522A
- Authority
- JP
- Japan
- Prior art keywords
- speed
- motors
- rear wheels
- pump
- wheels
- 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 Mounting Of Devices That Control Transmission Of Motive Force (AREA)
- Arrangement And Driving Of Transmission Devices (AREA)
Abstract
PURPOSE: To prevent occurrence of the speed difference between the front and rear wheels, by providing an automatic control mechanism interlocking with high speed or low speed operation of a gear type speed change apparatus, the automatic control mechanism being capable of keeping the rotational speed of two hydraulic motors for driving the front wheels at the same level as that of the rear wheels.
CONSTITUTION: When the gear type speed change apparatus 15 is in a low speed position, a valve 17 is closed so that both motors M1 may be connected to a pump P1 in parallel, and the discharged hydraulic oil from the pump P1 is supplied to the motors M1 in half amounts respectively so that the speed of the front wheels 1 in the low speed state may be kept at the same as that of the rear wheels 2. When the gear type speed change apparatus 15 is in a high speed position, and the speed of the rear wheels 2 is twice the former case, the valve 17 is opened so that both the motors M1 may be connected to the pump P1 in seriese, and the whole amount of the discharged hydraulic oil from the pump P1 is supplied to the motors M1 so that the speed of the front wheels 1 may become twice the former case and therefore the front and rear wheels 1, 2 may be kept at the same speed state.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13434079A JPS5657522A (en) | 1979-10-17 | 1979-10-17 | Hydraulic type four wheel drive tractor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13434079A JPS5657522A (en) | 1979-10-17 | 1979-10-17 | Hydraulic type four wheel drive tractor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5657522A true JPS5657522A (en) | 1981-05-20 |
Family
ID=15126055
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13434079A Pending JPS5657522A (en) | 1979-10-17 | 1979-10-17 | Hydraulic type four wheel drive tractor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5657522A (en) |
-
1979
- 1979-10-17 JP JP13434079A patent/JPS5657522A/en active Pending
Similar Documents
Publication | Publication Date | Title |
---|---|---|
ES436626A1 (en) | Hydrostatic propulsion system | |
JPS5347631A (en) | Construction for front wheel driving section of power-driven agricultural machinery | |
JPS5657522A (en) | Hydraulic type four wheel drive tractor | |
JPS5643031A (en) | Four wheel drive with automatic transmission | |
JPS56112327A (en) | Four-wheel drive type tractor | |
JPS55160618A (en) | Hydraulic running device | |
JPS54105641A (en) | Transmission system of four-wheel drive agricultual tractor | |
JPS53131627A (en) | Hydraulic driven working car | |
JPS55142105A (en) | Revolving hydraulic circuit | |
JPS5751052A (en) | Backing mechanism for movable agricultural machine | |
JPS5618155A (en) | Self-traveling tractor | |
JPS55123039A (en) | Traveling agricultural machine | |
JPS5313732A (en) | Working vehicle | |
JPS54104125A (en) | Speed change transmission mechanism for tractor | |
JPS57121936A (en) | Automatic two-or four-wheel drive selector | |
JPS5427130A (en) | Four-wheel drive vehicle | |
JPS5657521A (en) | Hydraulic type four wheel drive tractor | |
JPS55152624A (en) | Work vehicle | |
JPS5643032A (en) | Four wheel drive with automatic transmission | |
JPS51143227A (en) | Steering differential control apparatus for hydraulic driven vehicle | |
JPS52141925A (en) | Movable agricultural machine provided with running means of oil hydraulic drive type | |
JPS5760914A (en) | Wheel driving mechanism for agriculatural tractor | |
JPS5433950A (en) | Hydraulic planetary speed reduction gear unit | |
JPS56112325A (en) | Travel drive unit for agricultural tractor | |
JPS5231293A (en) | Rotary speed controls |