JPS6416428A - Hydraulic circuit structure for four-wheel-drive type working vehicle - Google Patents

Hydraulic circuit structure for four-wheel-drive type working vehicle

Info

Publication number
JPS6416428A
JPS6416428A JP17341387A JP17341387A JPS6416428A JP S6416428 A JPS6416428 A JP S6416428A JP 17341387 A JP17341387 A JP 17341387A JP 17341387 A JP17341387 A JP 17341387A JP S6416428 A JPS6416428 A JP S6416428A
Authority
JP
Japan
Prior art keywords
oil passage
wheel
circuit structure
hydraulic circuit
drive type
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
JP17341387A
Other languages
Japanese (ja)
Inventor
Kuniaki Honjo
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 JP17341387A priority Critical patent/JPS6416428A/en
Publication of JPS6416428A publication Critical patent/JPS6416428A/en
Pending legal-status Critical Current

Links

Landscapes

  • Arrangement And Driving Of Transmission Devices (AREA)

Abstract

PURPOSE:To prevent the lowering of operating pressure to the hydraulic clutch of a front-wheel power transmission system by providing a bypass oil passage for connecting a feeding oil passage and a discharging oil passage and providing a throttle part in the bypass oil passage. CONSTITUTION:A discharging oil passage 29 from a second control valve 27 is connected to the control valve 24 for the first and second hydraulic clutches 18, 19 of a front wheel speed change gear 10. And, a second relief valve 30 is provided to maintain the clutch pressure of the first and second hydraulic clutches 18, 19. This second relief valve 30 is set to be opened at a lower pressure than a first relief valve 18. A part in which a feeding oil passage 25 is connected to a front loader device 8 and a part in which the discharging oil passage 29 is connected to the front loader device are formed into one block type, and the feeding oil passage 25 and the discharging oil passage 29 are connected to this block part 32 while a bypass oil passage 31 with a throttle part 31a is provided in it.
JP17341387A 1987-07-10 1987-07-10 Hydraulic circuit structure for four-wheel-drive type working vehicle Pending JPS6416428A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17341387A JPS6416428A (en) 1987-07-10 1987-07-10 Hydraulic circuit structure for four-wheel-drive type working vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17341387A JPS6416428A (en) 1987-07-10 1987-07-10 Hydraulic circuit structure for four-wheel-drive type working vehicle

Publications (1)

Publication Number Publication Date
JPS6416428A true JPS6416428A (en) 1989-01-19

Family

ID=15959974

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17341387A Pending JPS6416428A (en) 1987-07-10 1987-07-10 Hydraulic circuit structure for four-wheel-drive type working vehicle

Country Status (1)

Country Link
JP (1) JPS6416428A (en)

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