JPS62242167A - Speed change operating structure for working vehicle - Google Patents

Speed change operating structure for working vehicle

Info

Publication number
JPS62242167A
JPS62242167A JP8691086A JP8691086A JPS62242167A JP S62242167 A JPS62242167 A JP S62242167A JP 8691086 A JP8691086 A JP 8691086A JP 8691086 A JP8691086 A JP 8691086A JP S62242167 A JPS62242167 A JP S62242167A
Authority
JP
Japan
Prior art keywords
speed change
change operation
gear shifter
control valve
auxiliary
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
JP8691086A
Other languages
Japanese (ja)
Other versions
JPH0670470B2 (en
Inventor
Teruo Minami
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 JP61086910A priority Critical patent/JPH0670470B2/en
Publication of JPS62242167A publication Critical patent/JPS62242167A/en
Publication of JPH0670470B2 publication Critical patent/JPH0670470B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

PURPOSE: To check any shock at the time of speed change operation, by interlocking the speed change operation of an auxiliary control valve, releasing a hydraulic feed system for a main gear shifter in the point midway in this speed change operation, and closing it at a time when auxiliary speed change operation is over.
CONSTITUTION: In an interval between a high speed position and a low speed position, there is provided with a relief part 32 which drains pressure oil from each hydraulic clutch 20 for a main gear shifter 17 and both hydraulic clutches 21a and 21b for a main control valve 23 and a sub-gear shifter 16, constituting an unload system, interlocking with speed change operation of an auxiliary control valve 26, and a hydraulic feed system for the main gear shifter 17 is released in the point midway in this speed change operation, closing it when auxiliary speed change operation is over. With this constitution, even if the sub-gear shifter 16 is operated for speed change during travel, power transmission is smoothly selectable, thus any shock at the time of the speed change operation is checkable.
COPYRIGHT: (C)1987,JPO&Japio
JP61086910A 1986-04-15 1986-04-15 Shifting structure of work vehicle Expired - Lifetime JPH0670470B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61086910A JPH0670470B2 (en) 1986-04-15 1986-04-15 Shifting structure of work vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61086910A JPH0670470B2 (en) 1986-04-15 1986-04-15 Shifting structure of work vehicle

Publications (2)

Publication Number Publication Date
JPS62242167A true JPS62242167A (en) 1987-10-22
JPH0670470B2 JPH0670470B2 (en) 1994-09-07

Family

ID=13899995

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61086910A Expired - Lifetime JPH0670470B2 (en) 1986-04-15 1986-04-15 Shifting structure of work vehicle

Country Status (1)

Country Link
JP (1) JPH0670470B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107202042A (en) * 2017-07-28 2017-09-26 重集团大连工程技术有限公司 A kind of fore pump constant pressure loop for cancelling overflow valve
CN107327447A (en) * 2017-07-28 2017-11-07 重集团大连工程技术有限公司 A kind of fore pump pressure limit protective loop for being applied to cancel overflow valve

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4897831U (en) * 1972-02-24 1973-11-19
JPS5720171A (en) * 1980-07-09 1982-02-02 Fuji Electric Co Ltd Operating method for transverter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4897831U (en) * 1972-02-24 1973-11-19
JPS5720171A (en) * 1980-07-09 1982-02-02 Fuji Electric Co Ltd Operating method for transverter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107202042A (en) * 2017-07-28 2017-09-26 重集团大连工程技术有限公司 A kind of fore pump constant pressure loop for cancelling overflow valve
CN107327447A (en) * 2017-07-28 2017-11-07 重集团大连工程技术有限公司 A kind of fore pump pressure limit protective loop for being applied to cancel overflow valve

Also Published As

Publication number Publication date
JPH0670470B2 (en) 1994-09-07

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