JPS57175428A - Speed reduction shifter for tractor - Google Patents
Speed reduction shifter for tractorInfo
- Publication number
- JPS57175428A JPS57175428A JP6200781A JP6200781A JPS57175428A JP S57175428 A JPS57175428 A JP S57175428A JP 6200781 A JP6200781 A JP 6200781A JP 6200781 A JP6200781 A JP 6200781A JP S57175428 A JPS57175428 A JP S57175428A
- Authority
- JP
- Japan
- Prior art keywords
- speed reduction
- solenoid
- section
- transmission
- shifted
- 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
- Lifting Devices For Agricultural Implements (AREA)
- Arrangement Of Transmissions (AREA)
Abstract
PURPOSE: To simplify operation, by composing a transmission of a constant speed section and a speed reduction section and shifting the transmission to the operation of the speed reduction section in connection with the elevation of an earth moving machine caused by a vertical motion operating lever.
CONSTITUTION: A transmission 10 is composed of a constant speed section 8 and a speed reduction section 9, which are alternatively operated by supplying pressurized oil from a pump 19 depending on the shifted position of a changeover solenoid valve 17. When electric power is applied to the solenoid 17a of the valve 17, it is shifted so that the pressurized oil flows through a constant speed port 17b. When the solenoid 17a is deenergized, the valve is shifted so that the pressurized oil flows through a speed reduction port 17c. A switch 21 is provided so that when a vertical motion operating lever 14 is turned to an elevation position, an actuating member 21c is pushed by the lever to open a normally closed contact 21b. The electric power supply to the solenoid 17a is controlled by the switch 21.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6200781A JPS57175428A (en) | 1981-04-24 | 1981-04-24 | Speed reduction shifter for tractor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6200781A JPS57175428A (en) | 1981-04-24 | 1981-04-24 | Speed reduction shifter for tractor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57175428A true JPS57175428A (en) | 1982-10-28 |
Family
ID=13187661
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6200781A Pending JPS57175428A (en) | 1981-04-24 | 1981-04-24 | Speed reduction shifter for tractor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57175428A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61110625A (en) * | 1984-11-05 | 1986-05-28 | Kubota Ltd | Governor apparatus for working car |
-
1981
- 1981-04-24 JP JP6200781A patent/JPS57175428A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61110625A (en) * | 1984-11-05 | 1986-05-28 | Kubota Ltd | Governor apparatus for working car |
JPH0353128B2 (en) * | 1984-11-05 | 1991-08-14 | Kubota Kk |
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