JPS641625A - Four-wheel-drive working vehicle - Google Patents

Four-wheel-drive working vehicle

Info

Publication number
JPS641625A
JPS641625A JP15378787A JP15378787A JPS641625A JP S641625 A JPS641625 A JP S641625A JP 15378787 A JP15378787 A JP 15378787A JP 15378787 A JP15378787 A JP 15378787A JP S641625 A JPS641625 A JP S641625A
Authority
JP
Japan
Prior art keywords
controller
fed
control valve
friction clutch
wheel
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.)
Granted
Application number
JP15378787A
Other languages
Japanese (ja)
Other versions
JPH011625A (en
JPH0676020B2 (en
Inventor
Kenji Kondo
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 JP62153787A priority Critical patent/JPH0676020B2/en
Publication of JPH011625A publication Critical patent/JPH011625A/en
Publication of JPS641625A publication Critical patent/JPS641625A/en
Publication of JPH0676020B2 publication Critical patent/JPH0676020B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Arrangement And Driving Of Transmission Devices (AREA)

Abstract

PURPOSE: To simplify the structure by operating a control valve for feeding/ discharging working oil to/from a friction clutch intermittently thereby eliminating one transmission system in a conventional structure.
CONSTITUTION: Working oil is fed from a pump 14 through a two-position solenoid control valve 17 energized to oil discharge side by a spring 16 to a friction clutch 11. The switching valve 17 is switched between supply side and oil discharge side based on an operating signal fed from a controller 18. A potentiometer 20 for detecting steering angle of front wheel 1 is arranged at the base portion of a pitman arm 19 and provides a detection signal to the controller 18. Furthermore, front and rear wheel speed sensors 21, 22 for detecting driving speeds of front and rear wheels 1, 2 in the form of rotation of transmission shaft are provided. These signals are fed to the controller 18.
COPYRIGHT: (C)1989,JPO&Japio
JP62153787A 1987-06-19 1987-06-19 Four-wheel drive work vehicle Expired - Lifetime JPH0676020B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62153787A JPH0676020B2 (en) 1987-06-19 1987-06-19 Four-wheel drive work vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62153787A JPH0676020B2 (en) 1987-06-19 1987-06-19 Four-wheel drive work vehicle

Publications (3)

Publication Number Publication Date
JPH011625A JPH011625A (en) 1989-01-06
JPS641625A true JPS641625A (en) 1989-01-06
JPH0676020B2 JPH0676020B2 (en) 1994-09-28

Family

ID=15570130

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62153787A Expired - Lifetime JPH0676020B2 (en) 1987-06-19 1987-06-19 Four-wheel drive work vehicle

Country Status (1)

Country Link
JP (1) JPH0676020B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005343419A (en) * 2004-06-07 2005-12-15 Ishikawajima Shibaura Mach Co Ltd Front wheel rotation control device for four-wheel drive vehicle

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS563027U (en) * 1979-06-20 1981-01-12
JPS59176117A (en) * 1983-03-22 1984-10-05 Kubota Ltd 4-wheel-drive type tractor
JPS6288619A (en) * 1985-10-12 1987-04-23 Kubota Ltd Transmission construction for traveling of agricultural tractor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS563027U (en) * 1979-06-20 1981-01-12
JPS59176117A (en) * 1983-03-22 1984-10-05 Kubota Ltd 4-wheel-drive type tractor
JPS6288619A (en) * 1985-10-12 1987-04-23 Kubota Ltd Transmission construction for traveling of agricultural tractor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005343419A (en) * 2004-06-07 2005-12-15 Ishikawajima Shibaura Mach Co Ltd Front wheel rotation control device for four-wheel drive vehicle

Also Published As

Publication number Publication date
JPH0676020B2 (en) 1994-09-28

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