JPS56124745A - Speed controller for agricultural tractor or the like - Google Patents

Speed controller for agricultural tractor or the like

Info

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
Application number
JP2769980A
Other languages
Japanese (ja)
Inventor
Koji Irikura
Tomoaki Azuma
Koichiro Fujisaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KAMIZAKI KOKYU KOKI SEISAKUSHO KK
Kanzaki Kokyukoki Manufacturing Co Ltd
Original Assignee
KAMIZAKI KOKYU KOKI SEISAKUSHO KK
Kanzaki Kokyukoki Manufacturing Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by KAMIZAKI KOKYU KOKI SEISAKUSHO KK, Kanzaki Kokyukoki Manufacturing Co Ltd filed Critical KAMIZAKI KOKYU KOKI SEISAKUSHO KK
Priority to JP2769980A priority Critical patent/JPS56124745A/en
Publication of JPS56124745A publication Critical patent/JPS56124745A/en
Pending legal-status Critical Current

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
JP2769980A 1980-03-04 1980-03-04 Speed controller for agricultural tractor or the like Pending JPS56124745A (en)

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)

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