JPS5657521A - Hydraulic type four wheel drive tractor - Google Patents

Hydraulic type four wheel drive tractor

Info

Publication number
JPS5657521A
JPS5657521A JP13433979A JP13433979A JPS5657521A JP S5657521 A JPS5657521 A JP S5657521A JP 13433979 A JP13433979 A JP 13433979A JP 13433979 A JP13433979 A JP 13433979A JP S5657521 A JPS5657521 A JP S5657521A
Authority
JP
Japan
Prior art keywords
speed
wheels
swash plate
motor
wheel side
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
JP13433979A
Other languages
Japanese (ja)
Inventor
Norimi Nakamura
Osami Hashimoto
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 JP13433979A priority Critical patent/JPS5657521A/en
Publication of JPS5657521A publication Critical patent/JPS5657521A/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 run the tractor at a speed in the state having less power loss in the whole speed range, by providing a mechanism for automatically controlling front and rear wheels so that the speed ratio of them is 1 to 1.
CONSTITUTION: S1, S2 designate swash plates for regulating amounts of oil of pumps P1, P2 to be discharged, the swash plate S1 on the front wheel side is provided with a lever 12 for manual operation of the swash plate S1 and the swash plate S2 on the rear wheel side is provided with a motor 13. To an output shaft of each of the motors M1, on the front wheel side is provided a detecting device 14 for detecting the rotational speed thereof, and the detecting devices 14 are connected with the motor 13 interactively through a control mechanism A. According to the rotational speed detected by the detectors 14, the control mechanism A rotates the motor 13 so that the swash plate S2 may be rotated by an angle to discharge an amount of hydraulic oil that causes the speed of the rear wheels 2 to be the same as the speed of the wheels 1. Thus, if the speed of the wheels 1 is changed by the operation of the lever 12, the speed ratio of the rear wheels 2 to the front wheels 1 can be kept at 1 to 1 at all times.
COPYRIGHT: (C)1981,JPO&Japio
JP13433979A 1979-10-17 1979-10-17 Hydraulic type four wheel drive tractor Pending JPS5657521A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13433979A JPS5657521A (en) 1979-10-17 1979-10-17 Hydraulic type four wheel drive tractor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13433979A JPS5657521A (en) 1979-10-17 1979-10-17 Hydraulic type four wheel drive tractor

Publications (1)

Publication Number Publication Date
JPS5657521A true JPS5657521A (en) 1981-05-20

Family

ID=15126033

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13433979A Pending JPS5657521A (en) 1979-10-17 1979-10-17 Hydraulic type four wheel drive tractor

Country Status (1)

Country Link
JP (1) JPS5657521A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5820522A (en) * 1981-07-24 1983-02-07 Kubota Ltd Tractor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5820522A (en) * 1981-07-24 1983-02-07 Kubota Ltd Tractor
JPS6230939B2 (en) * 1981-07-24 1987-07-06 Kubota Ltd

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