JPS5657522A - Hydraulic type four wheel drive tractor - Google Patents

Hydraulic type four wheel drive tractor

Info

Publication number
JPS5657522A
JPS5657522A JP13434079A JP13434079A JPS5657522A JP S5657522 A JPS5657522 A JP S5657522A JP 13434079 A JP13434079 A JP 13434079A JP 13434079 A JP13434079 A JP 13434079A JP S5657522 A JPS5657522 A JP S5657522A
Authority
JP
Japan
Prior art keywords
speed
motors
rear wheels
pump
wheels
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
JP13434079A
Other languages
Japanese (ja)
Inventor
Norimi Nakamura
Osami Hashimoto
Shigeaki Okuyama
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 JP13434079A priority Critical patent/JPS5657522A/en
Publication of JPS5657522A publication Critical patent/JPS5657522A/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 prevent occurrence of the speed difference between the front and rear wheels, by providing an automatic control mechanism interlocking with high speed or low speed operation of a gear type speed change apparatus, the automatic control mechanism being capable of keeping the rotational speed of two hydraulic motors for driving the front wheels at the same level as that of the rear wheels.
CONSTITUTION: When the gear type speed change apparatus 15 is in a low speed position, a valve 17 is closed so that both motors M1 may be connected to a pump P1 in parallel, and the discharged hydraulic oil from the pump P1 is supplied to the motors M1 in half amounts respectively so that the speed of the front wheels 1 in the low speed state may be kept at the same as that of the rear wheels 2. When the gear type speed change apparatus 15 is in a high speed position, and the speed of the rear wheels 2 is twice the former case, the valve 17 is opened so that both the motors M1 may be connected to the pump P1 in seriese, and the whole amount of the discharged hydraulic oil from the pump P1 is supplied to the motors M1 so that the speed of the front wheels 1 may become twice the former case and therefore the front and rear wheels 1, 2 may be kept at the same speed state.
COPYRIGHT: (C)1981,JPO&Japio
JP13434079A 1979-10-17 1979-10-17 Hydraulic type four wheel drive tractor Pending JPS5657522A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13434079A JPS5657522A (en) 1979-10-17 1979-10-17 Hydraulic type four wheel drive tractor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13434079A JPS5657522A (en) 1979-10-17 1979-10-17 Hydraulic type four wheel drive tractor

Publications (1)

Publication Number Publication Date
JPS5657522A true JPS5657522A (en) 1981-05-20

Family

ID=15126055

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13434079A Pending JPS5657522A (en) 1979-10-17 1979-10-17 Hydraulic type four wheel drive tractor

Country Status (1)

Country Link
JP (1) JPS5657522A (en)

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