SE8502395D0 - DUMPING VALVE FOR THE CLUTCH TO A POWER SHAFT ON A TRACTOR - Google Patents

DUMPING VALVE FOR THE CLUTCH TO A POWER SHAFT ON A TRACTOR

Info

Publication number
SE8502395D0
SE8502395D0 SE8502395A SE8502395A SE8502395D0 SE 8502395 D0 SE8502395 D0 SE 8502395D0 SE 8502395 A SE8502395 A SE 8502395A SE 8502395 A SE8502395 A SE 8502395A SE 8502395 D0 SE8502395 D0 SE 8502395D0
Authority
SE
Sweden
Prior art keywords
valve
opening
clutch
attenuation
tractor
Prior art date
Application number
SE8502395A
Other languages
Swedish (sv)
Other versions
SE8502395L (en
SE458298B (en
Inventor
T Vainiomeki
P K Mailas
Original Assignee
Valmet Oy
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 Valmet Oy filed Critical Valmet Oy
Publication of SE8502395D0 publication Critical patent/SE8502395D0/en
Publication of SE8502395L publication Critical patent/SE8502395L/en
Publication of SE458298B publication Critical patent/SE458298B/en

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
    • 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
    • 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
    • F16D2048/0215—Control by fluid pressure for damping of pulsations within the fluid system
    • 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
    • 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
    • F16D2300/00—Special features for couplings or clutches
    • F16D2300/22—Vibration damping

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Safety Valves (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
  • Mechanical Operated Clutches (AREA)

Abstract

The valve is fitted in the pressure pipe passing from a hydraulic pump operated by the tractor engine to a clutch of the power take-off shaft to avoid shock on clutch engagement. The valve is provided with an inlet opening (A), an outlet opening (B), which are in direct connection with each other, and a leakage opening (C), which communicates with the inlet and outlet openings (A and B) of the attenuation valve via a bleed valve (20) placed inside the body (10) of the attenuation valve (4). The bleed valve (20) automatically regulates the ratio of the flows passing through the outlet opening (B) of the attenuation valve (4) and through the leakage opening (C) as well as the pressure of the flow passing from the outlet opening (B) to the clutch (5), and thereby the engagement time of the power take off shaft (9). The valve also contains a choke channel (11) in which a floating piston (12) is located with clearance to provide throttled flow into an annular space (14) to act on a piston (16) influencing the opening of bleed valve (20). <IMAGE>
SE8502395A 1984-05-22 1985-05-14 DUMPING VALVE PUTS THE CLUTCH TO A POWER SHAFT ON A TRACTOR SE458298B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI842051A FI72931C (en) 1984-05-22 1984-05-22 Damping valve for the clutch in a tractor's PTO shaft.

Publications (3)

Publication Number Publication Date
SE8502395D0 true SE8502395D0 (en) 1985-05-14
SE8502395L SE8502395L (en) 1985-11-23
SE458298B SE458298B (en) 1989-03-13

Family

ID=8519118

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8502395A SE458298B (en) 1984-05-22 1985-05-14 DUMPING VALVE PUTS THE CLUTCH TO A POWER SHAFT ON A TRACTOR

Country Status (7)

Country Link
BR (1) BR8502401A (en)
DK (1) DK159383C (en)
FI (1) FI72931C (en)
FR (1) FR2564922B1 (en)
GB (1) GB2159228B (en)
NO (1) NO159842C (en)
SE (1) SE458298B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2336641B (en) * 1998-04-25 2002-10-16 Agco Gmbh & Co Hydraulic system for a power-take-off clutch
DE112014003435B4 (en) * 2013-07-24 2020-06-18 Schaeffler Technologies AG & Co. KG Hydraulic system with a pressure relief valve

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE543023A (en) * 1954-12-03 1900-01-01
DE1284184B (en) * 1964-09-11 1968-11-28 Hengstler Hydraulik Control unit for the alternating loading of two hydraulically operated friction clutches
US3363649A (en) * 1965-12-27 1968-01-16 Allis Chalmers Mfg Co Fluid pressure control valve
US4083382A (en) * 1976-06-03 1978-04-11 J. I. Case Company Regulating valve with hydraulic detent
US4465168A (en) * 1981-11-25 1984-08-14 Kabushiki Kaisha Komatsu Seisakusho Pressure control system for a transmission
DE3275653D1 (en) * 1982-06-23 1987-04-16 Deere & Co Hydraulic actuator arrangement

Also Published As

Publication number Publication date
FR2564922B1 (en) 1990-09-14
NO852019L (en) 1985-11-25
NO159842C (en) 1989-02-15
FI842051A (en) 1985-11-23
DK159383B (en) 1990-10-08
BR8502401A (en) 1986-01-21
DK225885D0 (en) 1985-05-21
GB2159228A (en) 1985-11-27
NO159842B (en) 1988-11-07
DK225885A (en) 1985-11-23
GB8512789D0 (en) 1985-06-26
FI842051A0 (en) 1984-05-22
SE8502395L (en) 1985-11-23
DK159383C (en) 1991-03-18
FR2564922A1 (en) 1985-11-29
SE458298B (en) 1989-03-13
FI72931B (en) 1987-04-30
GB2159228B (en) 1988-09-01
FI72931C (en) 1987-08-10

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