JPS646551A - Automatic transmission for wheel loader - Google Patents

Automatic transmission for wheel loader

Info

Publication number
JPS646551A
JPS646551A JP16114387A JP16114387A JPS646551A JP S646551 A JPS646551 A JP S646551A JP 16114387 A JP16114387 A JP 16114387A JP 16114387 A JP16114387 A JP 16114387A JP S646551 A JPS646551 A JP S646551A
Authority
JP
Japan
Prior art keywords
speed
engine revolution
revolution speed
maintained
controller
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
JP16114387A
Other languages
Japanese (ja)
Other versions
JP2819464B2 (en
Inventor
Masao Fukuda
Yasuo Yamazaki
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 JP16114387A priority Critical patent/JP2819464B2/en
Publication of JPS646551A publication Critical patent/JPS646551A/en
Application granted granted Critical
Publication of JP2819464B2 publication Critical patent/JP2819464B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/16—Inhibiting  or initiating  shift during unfavourable conditions , e.g. preventing forward-reverse shift at high vehicle speed, preventing engine overspeed  

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Driving Devices And Active Controlling Of Vehicle (AREA)
  • Control Of Transmission Device (AREA)

Abstract

PURPOSE:To permit smooth work by constituting the titled device so that the speed stage selected at present is maintained when the engine revolution speed reaches a prescribed value or less, while the speed corresponding to the car speed at that time point is set when the engine revolution speed becomes over a prescribed revolution speed. CONSTITUTION:A speed stage holding function-automatic selecting switch 6 installed onto a wristrest 4 is connected with the ON-OFF detecting circuit of a controller 9, and a means for operating a solenoid vale 8 for T/M shift by the set signal outputted from the controller is installed so that when the engine revolution speed is lower than a set value, automatic speed change is not carried out and the selected speed at present is maintained, while if the engine revolution speed becomes higher than a set value, speed stage is set according to the car speed at that time. Therefore, the trouble that load falls in the sharp brake application state due to the shift down or an operator is given with the discomfortable feeling in the prior art can be suppressed, and work can be executed smoothly.
JP16114387A 1987-06-30 1987-06-30 Automatic transmission for wheel loader Expired - Lifetime JP2819464B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16114387A JP2819464B2 (en) 1987-06-30 1987-06-30 Automatic transmission for wheel loader

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16114387A JP2819464B2 (en) 1987-06-30 1987-06-30 Automatic transmission for wheel loader

Publications (2)

Publication Number Publication Date
JPS646551A true JPS646551A (en) 1989-01-11
JP2819464B2 JP2819464B2 (en) 1998-10-30

Family

ID=15729409

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16114387A Expired - Lifetime JP2819464B2 (en) 1987-06-30 1987-06-30 Automatic transmission for wheel loader

Country Status (1)

Country Link
JP (1) JP2819464B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008066170A1 (en) * 2006-11-30 2008-06-05 Tcm Corporation Speed change control system for industrial vehicle
WO2008066171A1 (en) * 2006-11-30 2008-06-05 Tcm Corporation Speed change control system for industrial vehicle
JP2008138700A (en) * 2006-11-30 2008-06-19 Tcm Corp Shift control device for industrial vehicle
US11293902B2 (en) * 2019-03-25 2022-04-05 Kabushiki Kaisha Toshiba Inspection apparatus, inspection system, inspection method, and storage medium
CN115143275A (en) * 2022-06-28 2022-10-04 徐工集团工程机械股份有限公司科技分公司 Planet box control system and method and loader

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008066170A1 (en) * 2006-11-30 2008-06-05 Tcm Corporation Speed change control system for industrial vehicle
WO2008066171A1 (en) * 2006-11-30 2008-06-05 Tcm Corporation Speed change control system for industrial vehicle
JP2008138700A (en) * 2006-11-30 2008-06-19 Tcm Corp Shift control device for industrial vehicle
JPWO2008066170A1 (en) * 2006-11-30 2010-03-11 Tcm株式会社 Shift control device for industrial vehicle
JP4838861B2 (en) * 2006-11-30 2011-12-14 日立建機株式会社 Shift control device for industrial vehicle
US8380408B2 (en) 2006-11-30 2013-02-19 Hitachi Construction Machinery Co., Ltd. Speed change control system for industrial vehicle
US8423247B2 (en) 2006-11-30 2013-04-16 Hitachi Construction Machinery, Co., Ltd. Speed change control system for industrial vehicle
US11293902B2 (en) * 2019-03-25 2022-04-05 Kabushiki Kaisha Toshiba Inspection apparatus, inspection system, inspection method, and storage medium
CN115143275A (en) * 2022-06-28 2022-10-04 徐工集团工程机械股份有限公司科技分公司 Planet box control system and method and loader
CN115143275B (en) * 2022-06-28 2024-04-09 徐工集团工程机械股份有限公司科技分公司 Planet box control system, method and loader

Also Published As

Publication number Publication date
JP2819464B2 (en) 1998-10-30

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term