JPS644535A - Hydraulic four-wheel-drive device - Google Patents

Hydraulic four-wheel-drive device

Info

Publication number
JPS644535A
JPS644535A JP16068787A JP16068787A JPS644535A JP S644535 A JPS644535 A JP S644535A JP 16068787 A JP16068787 A JP 16068787A JP 16068787 A JP16068787 A JP 16068787A JP S644535 A JPS644535 A JP S644535A
Authority
JP
Japan
Prior art keywords
variable displacement
displacement type
pump
motor
drive motor
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
JP16068787A
Other languages
Japanese (ja)
Other versions
JP2594951B2 (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 JP62160687A priority Critical patent/JP2594951B2/en
Priority to US07/211,912 priority patent/US4886142A/en
Publication of JPS644535A publication Critical patent/JPS644535A/en
Application granted granted Critical
Publication of JP2594951B2 publication Critical patent/JP2594951B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PURPOSE:To make it possible to simply and surely eliminate the difference in rotational speed between front and rear wheels by disposing a variable displacement type steered wheel drive motor in a closed circuit composed of a variable displacement pump and a fixed displacement type unsteered wheel drive motor, and by associating the variable displacement type motor with a steering wheel. CONSTITUTION:A change pump 4 is incorporated to a variable displacement pump P which is mounted to an engine E. Pressure oil discharged from the pump 4 is replenished through check valves 25, 26 into a closed circuit composed of the variable displacement pump P, a fixed displacement type unsteered wheel drive motor MR and a variable displacement type steered drive motor MF when the amount of hydraulic oil in the closed circuit is decreased. In this arrangement, return oil from the fixed displacement type motor MR is fed into the variable displacement type motor MF which 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 associated with a steering wheel 1.
JP62160687A 1987-06-26 1987-06-27 Hydraulic four-wheel drive Expired - Fee Related JP2594951B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP62160687A JP2594951B2 (en) 1987-06-27 1987-06-27 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
JP62160687A JP2594951B2 (en) 1987-06-27 1987-06-27 Hydraulic four-wheel drive

Publications (2)

Publication Number Publication Date
JPS644535A true JPS644535A (en) 1989-01-09
JP2594951B2 JP2594951B2 (en) 1997-03-26

Family

ID=15720296

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62160687A Expired - Fee Related JP2594951B2 (en) 1987-06-26 1987-06-27 Hydraulic four-wheel drive

Country Status (1)

Country Link
JP (1) JP2594951B2 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6467423A (en) * 1987-09-08 1989-03-14 Kubota Ltd Front-wheel-drive device for four-wheel-drive vehicle
JPH057526U (en) * 1991-07-17 1993-02-02 ヤンマー農機株式会社 Front wheel speed increasing device for steering four-wheel drive power work vehicle
EP1433647A2 (en) * 2002-12-27 2004-06-30 Kanzaki Kokyukoki Mfg. Co., Ltd. Hydraulic four-wheel driving apparatus
US7987669B2 (en) 2003-09-26 2011-08-02 Kanzaki Kokyukoki Mfg. Co., Ltd Hydraulic steering transaxle and hydraulic driving vehicle
WO2012005178A1 (en) * 2010-07-05 2012-01-12 株式会社神崎高級工機製作所 Hydraulic four-wheel-drive work vehicle
KR20170023129A (en) * 2014-06-24 2017-03-02 안톤 파르 게엠베하 Positioning unit

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53119531A (en) * 1977-03-28 1978-10-19 Ishikawajima Shibaura Mach Steering wheel driving system for fourrwheel drive tractor or the like
JPS5463330U (en) * 1977-10-12 1979-05-04

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53119531A (en) * 1977-03-28 1978-10-19 Ishikawajima Shibaura Mach Steering wheel driving system for fourrwheel drive tractor or the like
JPS5463330U (en) * 1977-10-12 1979-05-04

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6467423A (en) * 1987-09-08 1989-03-14 Kubota Ltd Front-wheel-drive device for four-wheel-drive vehicle
JPH057526U (en) * 1991-07-17 1993-02-02 ヤンマー農機株式会社 Front wheel speed increasing device for steering four-wheel drive power work vehicle
EP1433647A2 (en) * 2002-12-27 2004-06-30 Kanzaki Kokyukoki Mfg. Co., Ltd. Hydraulic four-wheel driving apparatus
US7987669B2 (en) 2003-09-26 2011-08-02 Kanzaki Kokyukoki Mfg. Co., Ltd Hydraulic steering transaxle and hydraulic driving vehicle
WO2012005178A1 (en) * 2010-07-05 2012-01-12 株式会社神崎高級工機製作所 Hydraulic four-wheel-drive work vehicle
JP2012011964A (en) * 2010-07-05 2012-01-19 Kanzaki Kokyukoki Manufacturing Co Ltd Hydraulic four-wheel-drive working vehicle
US8887855B2 (en) 2010-07-05 2014-11-18 Kanzaki Kokyukoki Mfg. Co., Ltd. Hydraulic four-wheel-drive work vehicle
KR20170023129A (en) * 2014-06-24 2017-03-02 안톤 파르 게엠베하 Positioning unit

Also Published As

Publication number Publication date
JP2594951B2 (en) 1997-03-26

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Legal Events

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