JPS577720A - Vehicle speed controller for agricultural tractor or the like - Google Patents

Vehicle speed controller for agricultural tractor or the like

Info

Publication number
JPS577720A
JPS577720A JP8046380A JP8046380A JPS577720A JP S577720 A JPS577720 A JP S577720A JP 8046380 A JP8046380 A JP 8046380A JP 8046380 A JP8046380 A JP 8046380A JP S577720 A JPS577720 A JP S577720A
Authority
JP
Japan
Prior art keywords
rotational frequency
speed
vehicle
sensor
clutch
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
JP8046380A
Other languages
Japanese (ja)
Inventor
Hiroyuki Hashimoto
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 JP8046380A priority Critical patent/JPS577720A/en
Publication of JPS577720A publication Critical patent/JPS577720A/en
Pending legal-status Critical Current

Links

Landscapes

  • Arrangement Or Mounting Of Control Devices For Change-Speed Gearing (AREA)

Abstract

PURPOSE: To automatically control a vehicle to a constant speed and simplify the structure of a vehicle speed controller, by regulating the degree of engagement of a friction clutch, which acts to perform stepless transmission control between the speed shift stages of a step transmission, so that the output rotational frequency of the clutch is equal to a set level.
CONSTITUTION: The rotational frequency of a transmission shaft 5, to which the torque of a transmission shaft 4 is applied through a friction clutch 6, is detected by a sensor 68. The output signal of the sensor 68 is applied to a summing point 76 through an F-V converter 70. A signal corresponding to an output rotational frequency level set in a control amplifier 75 and the signal from the sensor 68 are compared with each other at the summing point 76 so that the difference between the signals is determined. An electrical current of such polarity as to reduce the difference is applied to a servomechanism to change applied oil pressure on the friction clutch 6 to alter the degree of engagement of the clutch. The speed of a vehicle is thus controlled to a constant level. The changing control is steplessly effected within the range of vehicle speed change ratio between the speed shift stages of the step transmission of the tractor by altering the set rotational frequency in the amplifier 75.
COPYRIGHT: (C)1982,JPO&Japio
JP8046380A 1980-06-13 1980-06-13 Vehicle speed controller for agricultural tractor or the like Pending JPS577720A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8046380A JPS577720A (en) 1980-06-13 1980-06-13 Vehicle speed controller for agricultural tractor or the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8046380A JPS577720A (en) 1980-06-13 1980-06-13 Vehicle speed controller for agricultural tractor or the like

Publications (1)

Publication Number Publication Date
JPS577720A true JPS577720A (en) 1982-01-14

Family

ID=13718945

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8046380A Pending JPS577720A (en) 1980-06-13 1980-06-13 Vehicle speed controller for agricultural tractor or the like

Country Status (1)

Country Link
JP (1) JPS577720A (en)

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