JPS644531A - Hydraulic four-wheel-drive device - Google Patents

Hydraulic four-wheel-drive device

Info

Publication number
JPS644531A
JPS644531A JP16064887A JP16064887A JPS644531A JP S644531 A JPS644531 A JP S644531A JP 16064887 A JP16064887 A JP 16064887A JP 16064887 A JP16064887 A JP 16064887A JP S644531 A JPS644531 A JP S644531A
Authority
JP
Japan
Prior art keywords
drive motor
speed
variable displacement
displacement type
pump
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
JP16064887A
Other languages
Japanese (ja)
Other versions
JPH0649424B2 (en
Inventor
Kojiro Yamaoka
Tomoaki Azuma
Kazuhiko Yano
Ryota Ohashi
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.)
Kanzaki Kokyukoki Manufacturing Co Ltd
Original Assignee
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 Kanzaki Kokyukoki Manufacturing Co Ltd filed Critical Kanzaki Kokyukoki Manufacturing Co Ltd
Priority to JP16064887A priority Critical patent/JPH0649424B2/en
Priority to US07/211,912 priority patent/US4886142A/en
Publication of JPS644531A publication Critical patent/JPS644531A/en
Publication of JPH0649424B2 publication Critical patent/JPH0649424B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Arrangement And Driving Of Transmission Devices (AREA)

Abstract

PURPOSE:To make it possible to simply and surely eliminate the difference in rotational speed between front and rear wheels by associating a variable displacement type front wheels drive motor to which hydraulic oil branching from oil discharged from a variable displacement pump is fed, with a steering unit so as to increase the speed of the front wheels in accordance with the radius of turn. CONSTITUTION:A charge pump 4 is incorporated to a viable displacement pump P which is mounted to an engine E. Pressure oil discharged from the pump P is bifurcated and fed into a variable displacement type front wheel drive motor MF and a fixed displacement type rear wheel drive motor MR through constant ratio flow dividing valves 5, 6, respectively. In this arrangement, the variable displacement type front wheel drive motor MF is arranged so as to make the rotational speed of a motor shaft 7 variable in association with the rotational speed of a swash plate 2 as a speed changing device, and the swash plate 2 is associated with a member corresponding to the turning angle of a steering wheel 1. Further the angle of the swash plate 2 is changed correspond ing to the turning angle of the steering wheel 1 so as to increase the speed of the left and right front wheels 11L, 11R.
JP16064887A 1987-06-26 1987-06-26 Hydraulic four-wheel drive Expired - Lifetime JPH0649424B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP16064887A JPH0649424B2 (en) 1987-06-26 1987-06-26 Hydraulic four-wheel drive
US07/211,912 US4886142A (en) 1987-06-26 1988-06-27 Hydraulic four-wheel drive system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16064887A JPH0649424B2 (en) 1987-06-26 1987-06-26 Hydraulic four-wheel drive

Publications (2)

Publication Number Publication Date
JPS644531A true JPS644531A (en) 1989-01-09
JPH0649424B2 JPH0649424B2 (en) 1994-06-29

Family

ID=15719476

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16064887A Expired - Lifetime JPH0649424B2 (en) 1987-06-26 1987-06-26 Hydraulic four-wheel drive

Country Status (1)

Country Link
JP (1) JPH0649424B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0459435A (en) * 1990-06-29 1992-02-26 Kubota Corp Turning operation structure of four wheel drive vehicle
US6189641B1 (en) * 1998-04-15 2001-02-20 Kanzaki Kokyukoki Mfg. Co., Ltd. Four-wheel hydraulic drive system for working vehicle
JP2006258119A (en) * 2005-03-15 2006-09-28 Hitachi Constr Mach Co Ltd Hst running system for work machine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0459435A (en) * 1990-06-29 1992-02-26 Kubota Corp Turning operation structure of four wheel drive vehicle
US6189641B1 (en) * 1998-04-15 2001-02-20 Kanzaki Kokyukoki Mfg. Co., Ltd. Four-wheel hydraulic drive system for working vehicle
JP2006258119A (en) * 2005-03-15 2006-09-28 Hitachi Constr Mach Co Ltd Hst running system for work machine

Also Published As

Publication number Publication date
JPH0649424B2 (en) 1994-06-29

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