JPS56124745A - Speed controller for agricultural tractor or the like - Google Patents
Speed controller for agricultural tractor or the likeInfo
- Publication number
- JPS56124745A JPS56124745A JP2769980A JP2769980A JPS56124745A JP S56124745 A JPS56124745 A JP S56124745A JP 2769980 A JP2769980 A JP 2769980A JP 2769980 A JP2769980 A JP 2769980A JP S56124745 A JPS56124745 A JP S56124745A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- revolution
- control
- change
- speed regulator
- 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 Or Mounting Of Control Devices For Change-Speed Gearing (AREA)
- Gear-Shifting Mechanisms (AREA)
- Structure Of Transmissions (AREA)
Abstract
PURPOSE: To perform stepless speed change control and stabilized control with a simple structure by controlling a change of the oil pressure to be set for a pressure regulating valve in response to the number of revolution detected by an output revolution number detecting means and to the number of revolution set by a revolution number setting means.
CONSTITUTION: Output signals from an output revolution number detecting means 56 are entered through an A/D converter 58 into a comparator circuit 57, and compared with set values from a revolution number setting means 59. Outputs from the comparator circuit 57 are entered into a speed regulator circuit 60, and output signals from the speed regulator circuit 60 are given through an amplifier 61 to a solenoid 62 of a pressure regulator valve. Besides, a control circuit 63 is connected to the speed regulator circuit 60 for the purpose of being alternatively used with the comparator circuit 57 by a circuit change-over switch in order to control the vehicle when it runs at speeds of the front first, front second, or the back first.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2769980A JPS56124745A (en) | 1980-03-04 | 1980-03-04 | Speed controller for agricultural tractor or the like |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2769980A JPS56124745A (en) | 1980-03-04 | 1980-03-04 | Speed controller for agricultural tractor or the like |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56124745A true JPS56124745A (en) | 1981-09-30 |
Family
ID=12228221
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2769980A Pending JPS56124745A (en) | 1980-03-04 | 1980-03-04 | Speed controller for agricultural tractor or the like |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56124745A (en) |
-
1980
- 1980-03-04 JP JP2769980A patent/JPS56124745A/en active Pending
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