CN102042347B - Clutch buffer piston mechanism for power shift gearbox - Google Patents
Clutch buffer piston mechanism for power shift gearbox Download PDFInfo
- Publication number
- CN102042347B CN102042347B CN201010593913A CN201010593913A CN102042347B CN 102042347 B CN102042347 B CN 102042347B CN 201010593913 A CN201010593913 A CN 201010593913A CN 201010593913 A CN201010593913 A CN 201010593913A CN 102042347 B CN102042347 B CN 102042347B
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- oil
- chamber
- damper piston
- oil seal
- clutch
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- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
The invention discloses a clutch buffer piston mechanism for a power shift gearbox, and relates to the technical field of manufacturing of clutch buffer pistons. The mechanism comprises an outer oil seal (1), a middle oil seal (2), a cavity A (3), an inner oil seal (4), an oil inlet P1 (5), a check valve (6), an oil cylinder (7), a buffer piston (8), a throttle hole (9), a throttle gap delta (10) and a cavity B (11), wherein the inner oil seal (4), the middle oil seal (2) and the outer oil seal (1) are arranged between the buffer piston (8) and the oil cylinder (7); the middle oil seal (2) divides the oil inlet side face of the buffer piston (8) into two working faces; the two cavities are formed by enclosing the working faces and the oil cylinder (7); and different oil chambers work in different piston strokes. The buffer piston mechanism can improve the shift performance of the power shift gearbox, makes shift stable, shortens the sliding friction time of a clutch and prolongs the service life of parts.
Description
Technical field
The present invention relates to clutch damper piston manufacturing technology field, a kind of power-shift transmission clutch damper piston mechanism that is applied to automobile.
Background technique
What the automobile power manual transmission adopted is the hydraulic power operation, but because liquid has incompressibility, Hydraulic Power Transmission System rigidity is bigger; In case liquid is full of oil hydraulic cylinder, behind the elimination binding member friction plate gap, the just instantaneous rising of oil pressure; Can cause many adverse consequencess, as:
(1) produces shift impact, make power train produce bigger dynamic load, the wearing and tearing of aggravation part;
(2) it is excessive that friction plate combines the initial stage unit friction power, and the Friction Disk Surface temperature rise is too fast, is easy to generate buckling deformation, forms scaling loss;
(3) influence the travelling comfort of taking.
Patent documentation 1:CN101065594A discloses a kind of clutch plunger mechanism.This clutch plunger mechanism compression face external diameter is set to the diameter greater than clutch pushing portion, can obtain bigger active force, and required cost is lower.But adopt this structure, in the clutch's jointing process, the suffered activating pressure of friction plate is a definite value, can't obtain best moment rising characteristic, causes bigger shift impact, the travelling comfort that influence is taken.
Patent documentation 2:CN101520072A discloses a kind of clutch that has dual area piston.This dual area piston mechanism is made up of two pistons independent of each other, and the control valve of two independent regulation is respectively the two-piston fuel feeding, through changing the control valve fuel delivery, can obtain clutch friction plate engagement characteristics preferably.But this structure is made up of the control valve of two independent pistons and two independent regulation, and structure is comparatively complicated, and manufacture cost is higher.
In order to overcome above-mentioned shortcoming, invent a kind of power-shift transmission clutch damper piston mechanism, adopt this structure can improve the clutch frictional torque rising characteristic, reduce the impulsive load of power train, improve the temperature variation of friction plate cohesive process.
Summary of the invention
Main purpose of the present invention is through adopting clutch damper piston mechanism, improve clutch friction plate moment rising characteristic, reduce the shift impact in the using process of automobile power manual transmission, the working life of improve vehicle ride comfort, improving part.
The scheme that technical problem adopted that the present invention solves is: power-shift transmission clutch damper piston mechanism.Its key is: damper piston is contained in the oil cylinder, have between damper piston and the oil cylinder interior, in, outer three road oil sealings, middle oil sealing is separated into two working surfaces with damper piston oil-feed side, working surface and oil cylinder surround A chamber and B chamber.In different piston strokes, the oil-filled work of different oil pockets.
Concrete technological scheme of the present invention does,
Comprise outer oil seal, middle oil sealing, A chamber, inner oil seal, oil inlet P
1, one-way valve, oil cylinder, damper piston, throttle orifice, throttle clearance Δ and B chamber; Damper piston is contained in the oil cylinder, and damper piston and oil cylinder are through outer oil seal, middle oil sealing, inner oil seal three road oil sealing sealings; Damper piston adopts step-like double layer construction; The outer rim of damper piston is through outer oil seal and cylinder seal; Middle oil sealing is located between the outer rim and oil cylinder of damper piston step; Middle oil sealing is separated into two working surfaces with the oil-feed side of damper piston, and the inner edge of damper piston is through inner oil seal and cylinder seal; Two said working surfaces and oil cylinder surround A chamber and B chamber respectively; Communicate through one-way valve, throttle orifice, throttle clearance Δ between A chamber, the B chamber, one-way valve arrives the unidirectional conducting in A chamber for the B chamber; A passes through oil inlet P in the chamber
1Communicate oil inlet P with the control oil channel of clutch damper piston
1Be opened in the oil cylinder inboard, communicate with the A chamber.
A passes through oil inlet P in the chamber
1Communicate oil inlet P with control oil channel
1Be opened in before the inner oil seal.The A chamber is through the sealing of inner oil seal and realization of middle oil sealing and cylinder body, through the isolation of middle oil sealing realization with the B chamber.Communicate through one-way valve, throttle orifice, throttle clearance Δ between A chamber, the B chamber, one-way valve, throttle orifice, throttle clearance are opened in after the middle oil sealing.The B chamber is through the sealing of middle oil sealing and outer oil seal realization and cylinder body.When clutch combined, fluid flowed to the B chamber by the A chamber, and one-way valve ends, and A chamber, B chamber communicate through throttle orifice.When clutch separation, fluid flows to the A chamber by the B chamber, one-way valve work, and A chamber, B chamber communicate through one-way valve.
Be described below according to above-mentioned its working procedure of power-shift transmission clutch damper piston mechanism that is assembled into: middle oil sealing is divided into two faces with damper piston oil-feed side, when clutch combines, can be divided into two stages.The fluid of the 1st stage through main pressure regulator valve and control valve has P
1Pressure, get into the A chamber, then through throttle orifice d again through getting into the B chamber after twice throttling of throttle clearance Δ, in this moment, the B cavity pressure is starkly lower than the A chamber, can be similar to this moment to think to have only the work of A chamber, active force only is the parts of two chambeies when all working.During the free clearance of the clutch plate that the 2nd stage equaled to eliminate when the damper piston stroke, throttle orifice d directly leads to the B chamber, and fluid no longer receives the second throttle effect of throttle clearance Δ, and the pressure in the oil cylinder equals P
1, make gearshift steadily because the damper piston chamber holds the volume increase of fluid, and the damper piston travel speed slows down this moment, active force increases sharply simultaneously.When clutch separation, the fluid in B chamber can separate clutch plate rapidly through one-way valve and the rapid oil extraction of throttle orifice d.
The invention has the beneficial effects as follows that after the employing damper piston adopted step-like double layer construction, A chamber and B chamber cooperating had improved the gearshift performance, made the sliding wear time of shifting gears steadily and having shortened clutch.
Description of drawings
Fig. 1 is a structural drawing of the present invention.
Among the figure, 1, outer oil seal, 2, middle oil sealing, 3, the A chamber, 4, inner oil seal, 5, oil inlet P
1, 6, one-way valve, 7, oil cylinder, 8, damper piston, 9, throttle orifice d, 10, the throttle clearance Δ, 11, the B chamber.
Embodiment
With reference to accompanying drawing, specific embodiments of the invention is further described.
Damper piston 8 is contained in the oil cylinder 7, realizes the sealing of damper piston 8 and oil cylinder 7 through outer oil seal 1, middle oil sealing 2, inner oil seal 4 three road oil sealings.Middle oil sealing 2 is separated into two working surfaces with damper piston oil-feed side, and working surface and oil cylinder surround A chamber 3 and B chamber 11.Oil inlet P is passed through in A chamber 3
15 communicate oil inlet P with control oil channel
1Be opened in before the inner oil seal 4.Communicate through one-way valve 6, throttle orifice 9, throttle clearance Δ 10 between A chamber 3, the B chamber 11, one-way valve, throttle orifice, throttle clearance are opened in after the middle oil sealing 2.
Claims (1)
1. a power-shift transmission clutch damper piston mechanism is characterized in that: comprise outer oil seal (1), middle oil sealing (2), A chamber (3), inner oil seal (4), oil inlet P
1(5), one-way valve (6), oil cylinder (7), damper piston (8), throttle orifice (9), throttle clearance Δ (10) and B chamber (11); Said damper piston (8) is contained in the oil cylinder (7), and damper piston (8) passes through outer oil seal (1), middle oil sealing (2), inner oil seal (4) three road oil sealing sealings with oil cylinder (7); Said damper piston (8) adopts step-like double layer construction; The outer rim of said damper piston (8) is through outer oil seal (1) and oil cylinder (7) sealing; Oil sealing (2) is located between the outer rim and oil cylinder (7) of damper piston (8) step in said; Oil sealing (2) is separated into two working surfaces with the oil-feed side of damper piston (8) in said, and the inner edge of said damper piston (8) is through inner oil seal (4) and oil cylinder (7) sealing; Two said working surfaces and oil cylinder surround A chamber (3) and B chamber (11) respectively; Communicate through one-way valve (6), throttle orifice (9) and throttle clearance Δ (10) between said A chamber (3) and B chamber (11), said one-way valve (6) is that B chamber (11) is to the unidirectional conducting in A chamber (3); Oil inlet P is passed through in A chamber (3)
1(5) control oil channel with said damper piston (8) communicates oil inlet P
1(5) it is inboard and communicate with A chamber (3) to be opened in oil cylinder (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010593913A CN102042347B (en) | 2010-12-17 | 2010-12-17 | Clutch buffer piston mechanism for power shift gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010593913A CN102042347B (en) | 2010-12-17 | 2010-12-17 | Clutch buffer piston mechanism for power shift gearbox |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102042347A CN102042347A (en) | 2011-05-04 |
| CN102042347B true CN102042347B (en) | 2012-08-29 |
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ID=43908776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010593913A Expired - Fee Related CN102042347B (en) | 2010-12-17 | 2010-12-17 | Clutch buffer piston mechanism for power shift gearbox |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102042347B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196916A (en) * | 2014-08-26 | 2014-12-10 | 广西柳工机械股份有限公司 | Oil charge buffering device of hydraulic gear-shifting gearbox clutch |
| CN106838047B (en) * | 2017-03-14 | 2021-04-13 | 杭州前进齿轮箱集团股份有限公司 | Double-oil-cylinder clutch structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2813990Y (en) * | 2004-01-15 | 2006-09-06 | 高焕元 | Mechanical hydraulic two-purpose vehicle clutch assembly |
| CN2903548Y (en) * | 2005-10-20 | 2007-05-23 | 陈金祥 | Clutch branch pump of automobile |
| EP1918602A2 (en) * | 2006-10-23 | 2008-05-07 | CNH Italia S.p.A. | Clutch assembly with bleed assembly for centrifugal pressure |
| CN201487084U (en) * | 2009-07-25 | 2010-05-26 | 徐州工程机械科技股份有限公司 | Novel plug-in buffer type clutch |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007047852A1 (en) * | 2007-11-23 | 2009-05-28 | Zf Friedrichshafen Ag | Load switching element |
-
2010
- 2010-12-17 CN CN201010593913A patent/CN102042347B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2813990Y (en) * | 2004-01-15 | 2006-09-06 | 高焕元 | Mechanical hydraulic two-purpose vehicle clutch assembly |
| CN2903548Y (en) * | 2005-10-20 | 2007-05-23 | 陈金祥 | Clutch branch pump of automobile |
| EP1918602A2 (en) * | 2006-10-23 | 2008-05-07 | CNH Italia S.p.A. | Clutch assembly with bleed assembly for centrifugal pressure |
| CN201487084U (en) * | 2009-07-25 | 2010-05-26 | 徐州工程机械科技股份有限公司 | Novel plug-in buffer type clutch |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102042347A (en) | 2011-05-04 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120829 Termination date: 20121217 |