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 TRACTORInfo
- 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
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>
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)
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)
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 |
-
1984
- 1984-05-22 FI FI842051A patent/FI72931C/en not_active IP Right Cessation
-
1985
- 1985-05-14 SE SE8502395A patent/SE458298B/en not_active IP Right Cessation
- 1985-05-21 DK DK225885A patent/DK159383C/en active
- 1985-05-21 BR BR8502401A patent/BR8502401A/en not_active IP Right Cessation
- 1985-05-21 NO NO852019A patent/NO159842C/en unknown
- 1985-05-21 GB GB08512789A patent/GB2159228B/en not_active Expired
- 1985-05-22 FR FR858507685A patent/FR2564922B1/en not_active Expired - Lifetime
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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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NUG | Patent has lapsed |
Ref document number: 8502395-0 Effective date: 19921204 Format of ref document f/p: F |