WO1994008158A1 - Dispositif d'avance pas a pas - Google Patents

Dispositif d'avance pas a pas Download PDF

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Publication number
WO1994008158A1
WO1994008158A1 PCT/JP1993/001437 JP9301437W WO9408158A1 WO 1994008158 A1 WO1994008158 A1 WO 1994008158A1 JP 9301437 W JP9301437 W JP 9301437W WO 9408158 A1 WO9408158 A1 WO 9408158A1
Authority
WO
WIPO (PCT)
Prior art keywords
inching
rod
pressure
spool
balance chamber
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.)
Ceased
Application number
PCT/JP1993/001437
Other languages
English (en)
Japanese (ja)
Inventor
Toshihiro Fukuno
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
Publication of WO1994008158A1 publication Critical patent/WO1994008158A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D48/00—External control of clutches
    • F16D48/02—Control by fluid pressure
    • F16D48/04—Control by fluid pressure providing power assistance
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D25/00—Fluid-actuated clutches
    • F16D25/12—Details not specific to one of the before-mentioned types
    • F16D25/14—Fluid pressure control
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D48/00—External control of clutches
    • F16D48/02—Control by fluid pressure
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D48/00—External control of clutches
    • F16D48/02—Control by fluid pressure
    • F16D2048/0209—Control by fluid pressure characterised by fluid valves having control pistons, e.g. spools
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D48/00—External control of clutches
    • F16D48/02—Control by fluid pressure
    • F16D2048/0221—Valves for clutch control systems; Details thereof

Definitions

  • FIG. 3 shows how the pressure in the balance chamber 23 changes.
  • the vertical axis is the pressure Pa of the balance chamber 23, and the horizontal axis is the time t.
  • the present invention is useful as an inching device for a transmission that can achieve engagement of a hydraulic clutch clutch pack with less impact, is comfortable for a driver, and contributes to safety of a power transmission mechanism.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
  • Gear-Shifting Mechanisms (AREA)

Abstract

L'invention concerne un dispositif d'avance pas à pas permettant l'engagement d'un ensemble embrayage hydraulique réduisant les à-coups, lequel apporte un confort au conducteur et contribue à la sécurité d'un mécanisme de transmission de puissance. A cette fin, une chambre d'équilibrage (23) d'une soupape de modulation (10) ainsi qu'une partie d'une barre (36) d'avance pas à pas d'une soupape (30) d'avance pas à pas sont reliées mutuellement à un conduit (61), et la pression de la chambre d'équilibrage (23) est réduite par une partie entaillée (36b) se trouvant dans la barre (36) d'avance pas à pas lors du fonctionnement de cette dernière. Ensuite, lorsque l'on ramène la barre (36) d'avance pas à pas à sa position d'origine, la pression de la chambre d'équilibrage (23) est rétablie à son niveau d'origine pendant une certaine durée tout en modulant. On augmente graduellement la pression d'alimentation d'un ensemble embrayage (50) afin de réduire les à-coups au moment de l'embrayage.
PCT/JP1993/001437 1992-10-07 1993-10-06 Dispositif d'avance pas a pas Ceased WO1994008158A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP4/293862 1992-10-07
JP4293862A JPH06117534A (ja) 1992-10-07 1992-10-07 インチング装置

Publications (1)

Publication Number Publication Date
WO1994008158A1 true WO1994008158A1 (fr) 1994-04-14

Family

ID=17800122

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1993/001437 Ceased WO1994008158A1 (fr) 1992-10-07 1993-10-06 Dispositif d'avance pas a pas

Country Status (2)

Country Link
JP (1) JPH06117534A (fr)
WO (1) WO1994008158A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50146941A (fr) * 1974-05-16 1975-11-25
JPH02102064U (fr) * 1989-01-31 1990-08-14

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50146941A (fr) * 1974-05-16 1975-11-25
JPH02102064U (fr) * 1989-01-31 1990-08-14

Also Published As

Publication number Publication date
JPH06117534A (ja) 1994-04-26

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