JPS57157854A - Speed change controller of transmission - Google Patents

Speed change controller of transmission

Info

Publication number
JPS57157854A
JPS57157854A JP4323481A JP4323481A JPS57157854A JP S57157854 A JPS57157854 A JP S57157854A JP 4323481 A JP4323481 A JP 4323481A JP 4323481 A JP4323481 A JP 4323481A JP S57157854 A JPS57157854 A JP S57157854A
Authority
JP
Japan
Prior art keywords
speed change
selector valve
shift valves
pilot
single selector
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
JP4323481A
Other languages
Japanese (ja)
Other versions
JPH0117021B2 (en
Inventor
Masaru Nakamura
Toshio Uchimura
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.)
Komatsu Ltd
Original Assignee
Komatsu Ltd
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 Komatsu Ltd filed Critical Komatsu Ltd
Priority to JP4323481A priority Critical patent/JPS57157854A/en
Publication of JPS57157854A publication Critical patent/JPS57157854A/en
Publication of JPH0117021B2 publication Critical patent/JPH0117021B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To simplify an operation system by using a single selector valve which has speed change combination patterns.
CONSTITUTION: Brake cylinder circuits of frictional brake cylinders H, L, R,I, II, III of gear trains include first to fifth pilot differential shift valves 10W14, respectively. Shifting motions of the pilot differential shift valves are controlled by a single selector valve 29 which selectively releases pilot pressure drain circuits 24W28. The single selector valve 29, having combination change-over positions of speed change patterns, combines the pilot differential shift valves 10W14 of the frictional brake cylinders for shifting to supply pressurized working fluid, for engaging the brake.
COPYRIGHT: (C)1982,JPO&Japio
JP4323481A 1981-03-26 1981-03-26 Speed change controller of transmission Granted JPS57157854A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4323481A JPS57157854A (en) 1981-03-26 1981-03-26 Speed change controller of transmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4323481A JPS57157854A (en) 1981-03-26 1981-03-26 Speed change controller of transmission

Publications (2)

Publication Number Publication Date
JPS57157854A true JPS57157854A (en) 1982-09-29
JPH0117021B2 JPH0117021B2 (en) 1989-03-28

Family

ID=12658212

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4323481A Granted JPS57157854A (en) 1981-03-26 1981-03-26 Speed change controller of transmission

Country Status (1)

Country Link
JP (1) JPS57157854A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6249063A (en) * 1985-08-28 1987-03-03 Kubota Ltd Hydraulic structure of working vehicle
CN109649368A (en) * 2019-01-25 2019-04-19 眉山中车制动科技股份有限公司 A kind of brake auxiliary system, brake and detection method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5085032A (en) * 1973-12-05 1975-07-09
JPS5122137A (en) * 1974-08-19 1976-02-21 Matsushita Electric Works Ltd NENSHO SOCHI

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5085032A (en) * 1973-12-05 1975-07-09
JPS5122137A (en) * 1974-08-19 1976-02-21 Matsushita Electric Works Ltd NENSHO SOCHI

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6249063A (en) * 1985-08-28 1987-03-03 Kubota Ltd Hydraulic structure of working vehicle
JPH0586517B2 (en) * 1985-08-28 1993-12-13 Kubota Kk
CN109649368A (en) * 2019-01-25 2019-04-19 眉山中车制动科技股份有限公司 A kind of brake auxiliary system, brake and detection method

Also Published As

Publication number Publication date
JPH0117021B2 (en) 1989-03-28

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