JPS5715020A - Travelling speed changer for 4-wheel drive tractor - Google Patents

Travelling speed changer for 4-wheel drive tractor

Info

Publication number
JPS5715020A
JPS5715020A JP8987480A JP8987480A JPS5715020A JP S5715020 A JPS5715020 A JP S5715020A JP 8987480 A JP8987480 A JP 8987480A JP 8987480 A JP8987480 A JP 8987480A JP S5715020 A JPS5715020 A JP S5715020A
Authority
JP
Japan
Prior art keywords
speed
wheels
speed change
nonoperated
interlock
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
JP8987480A
Other languages
Japanese (ja)
Inventor
Osami Hashimoto
Ryozo Kuroiwa
Masatoshi Sakamitsu
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.)
Kubota Corp
Original Assignee
Kubota Corp
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 Kubota Corp filed Critical Kubota Corp
Priority to JP8987480A priority Critical patent/JPS5715020A/en
Publication of JPS5715020A publication Critical patent/JPS5715020A/en
Pending legal-status Critical Current

Links

Landscapes

  • Arrangement And Mounting Of Devices That Control Transmission Of Motive Force (AREA)
  • Arrangement And Driving Of Transmission Devices (AREA)

Abstract

PURPOSE: To improve performance for rapid swivel by disconnecting interlock between both speed changers and by reducing a circumferential speed of a nonoperated wheel by a speed change control device for operating put side by side when an operating angle of the tractor mentioned on the top equipped with a hydraulic stepless speed changer on each of front and rear wheels exceeds a prescribed value.
CONSTITUTION: With front wheels 1 operated by a control handle, if the operating angle exceeds a fixed value, a claw member 31 is disconnected from an engaged tooth part, and interlock between the first and the second speed change drivers is disconnected allowing the second speed change driver 6 to become independent. At the same time with handle operation a limit switch L is actuated to interrupt an input signal from an arithmetic unit 15 to a comparator 18, while a detected speed from the arithmetic unit 15 is stored and a speed lower than the detected speed is inputted from a setting device 36 to the comparator 18, allowing a circumferential speed of nonoperated wheels 2 to be made to be lower than that of operated wheels 1. Through the process, rapid swivel performance is improved.
COPYRIGHT: (C)1982,JPO&Japio
JP8987480A 1980-06-30 1980-06-30 Travelling speed changer for 4-wheel drive tractor Pending JPS5715020A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8987480A JPS5715020A (en) 1980-06-30 1980-06-30 Travelling speed changer for 4-wheel drive tractor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8987480A JPS5715020A (en) 1980-06-30 1980-06-30 Travelling speed changer for 4-wheel drive tractor

Publications (1)

Publication Number Publication Date
JPS5715020A true JPS5715020A (en) 1982-01-26

Family

ID=13982906

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8987480A Pending JPS5715020A (en) 1980-06-30 1980-06-30 Travelling speed changer for 4-wheel drive tractor

Country Status (1)

Country Link
JP (1) JPS5715020A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58136521A (en) * 1982-02-05 1983-08-13 Kubota Ltd Steering and traveling device of front wheel driven tractor
US4886142A (en) * 1987-06-26 1989-12-12 Kanzaki Kokyukoki Mfg. Co. Ltd. Hydraulic four-wheel drive system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58136521A (en) * 1982-02-05 1983-08-13 Kubota Ltd Steering and traveling device of front wheel driven tractor
JPS6235929B2 (en) * 1982-02-05 1987-08-04 Kubota Ltd
US4886142A (en) * 1987-06-26 1989-12-12 Kanzaki Kokyukoki Mfg. Co. Ltd. Hydraulic four-wheel drive system

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