JPS644535A - Hydraulic four-wheel-drive device - Google Patents
Hydraulic four-wheel-drive deviceInfo
- 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
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.
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)
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)
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 |
-
1987
- 1987-06-27 JP JP62160687A patent/JP2594951B2/en not_active Expired - Fee Related
Patent Citations (2)
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)
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
Date | Code | Title | Description |
---|---|---|---|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
LAPS | Cancellation because of no payment of annual fees |