CN111486183A - Wet-type multiplate formula clutch of shifting - Google Patents
Wet-type multiplate formula clutch of shifting Download PDFInfo
- Publication number
- CN111486183A CN111486183A CN202010311049.4A CN202010311049A CN111486183A CN 111486183 A CN111486183 A CN 111486183A CN 202010311049 A CN202010311049 A CN 202010311049A CN 111486183 A CN111486183 A CN 111486183A
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- China
- Prior art keywords
- friction
- friction plate
- plate
- arc groove
- clutch
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Classifications
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- 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
- F16D25/06—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch
- F16D25/062—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces
- F16D25/063—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially
- F16D25/0635—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially with flat friction surfaces, e.g. discs
- F16D25/0638—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially with flat friction surfaces, e.g. discs with more than two discs, e.g. multiple lamellae
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- 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
- F16D25/06—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch
- F16D25/062—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces
- F16D25/063—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially
- F16D25/064—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially the friction surface being grooved
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- 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
- F16D25/123—Details not specific to one of the before-mentioned types in view of cooling and lubrication
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
The invention provides a wet-type multi-plate type gear shifting clutch which comprises a cylinder sleeve, wherein a piston and a pressure plate are arranged in the cylinder sleeve, a plurality of dual steel plates and a plurality of friction plates are arranged between the piston and the pressure plate, the dual steel plates and the friction plates are alternately arranged, the friction plates comprise a first friction plate and a second friction plate, a first arc groove is arranged on each of two sides of the first friction plate, a second arc groove is arranged on each of two sides of the second friction plate, the first friction plate is arranged at the middle position in the axial direction of the clutch along the direction from the piston to the pressure plate, the second friction plate is arranged on each of two sides of the first friction plate, and the area proportion of the first arc groove to the first friction plate is smaller than the area proportion of the second arc groove. The invention enables the clutch to obtain excellent friction torque, lower temperature rise and lower abrasion by quantitatively changing the areas of the circular arc grooves of the friction plates at different axial positions, prolongs the service life of a friction element and improves the reliability of the clutch.
Description
Technical Field
The invention relates to the technical field of clutches, in particular to a wet type multi-plate type gear shifting clutch.
Background
In the complex transmission of a heavy vehicle, the most vulnerable equipment or element is the wet clutch. The most important reason for the failure of the clutch is that the temperature between the friction pairs is too high, so that the friction elements are subjected to buckling deformation or wear failure. The friction performance of the friction element is directly determined by the friction material selected and is influenced by the structure of the friction element, the operating parameters, the flow rate and the temperature of the lubricating oil. Most researchers are currently developing new friction materials to improve the frictional wear performance of clutches, thereby reducing the engagement time and wear rate of the clutches.
However, the heat dissipation and heat generation conditions at different axial positions of the multi-plate clutch are not uniform, which results in a significant difference in the frictional wear characteristics of the friction elements at different positions. Because the friction element in the middle of the multi-disc clutch system has poor heat dissipation conditions and generates more heat, thermal buckling and abrasion failure are most likely to occur, so that the failure of the whole clutch is caused, and the reliability of a transmission system and the safety of the whole vehicle are further influenced.
The above disadvantages need to be improved.
Disclosure of Invention
The invention aims to provide a wet type multi-plate type gear shifting clutch, which is used for solving the technical problem that the service life of the clutch is shortened due to the fact that a friction element at the middle position in the conventional multi-plate clutch is easy to lose efficacy.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a wet type multi-plate type gear shifting clutch is characterized by comprising a cylinder sleeve, wherein a piston and a pressure plate are arranged in the cylinder sleeve, a plurality of dual steel plates and a plurality of friction plates are arranged between the piston and the pressure plate, the dual steel plates and the friction plates are alternately arranged, the friction plates comprise a first friction plate and a second friction plate, first arc grooves are formed in two sides of the first friction plate, second arc grooves are formed in two sides of the second friction plate,
the first friction plate is arranged at the middle position in the axial direction of the clutch along the direction from the piston to the pressure plate, the second friction plate is arranged on two sides of the first friction plate, and the area proportion of the first arc groove to the first friction plate is smaller than that of the second arc groove to the second friction plate.
The invention according to the above scheme is characterized in that the number ratio of the first friction plates to the second friction plates is 1 to 2, and the second friction plates are uniformly arranged on both sides of the first friction plates.
In the present invention according to the above aspect, the area of the first circular arc groove accounts for 30% to 40% of the area of the first friction plate, and the area of the second circular arc groove accounts for 45% to 55% of the area of the second friction plate.
Further, the area of the first arc groove accounts for 35% of the area of the first friction plate, and the area of the second arc groove accounts for 50% of the area of the second friction plate.
Further, the width of the first arc groove is 0.8-1.2 mm, and the width of the second arc groove is 1.3-1.7 mm.
Furthermore, the width of the first circular arc groove is 1mm, and the width of the second circular arc groove is 1.5 mm.
The invention according to the above aspect is characterized in that the first arc groove and the second arc groove are both 45 ° bisected double arc grooves.
The invention according to the above aspect is characterized in that the paired steel sheets are flat steel sheets.
The invention according to the scheme is characterized in that a limiting snap ring is arranged in a groove of the cylinder sleeve and connected with the pressure plate.
The invention according to the above scheme is characterized in that the dual steel sheets are circumferentially connected with the cylinder sleeve, and the friction plate is connected with the input gear.
The invention has the following beneficial effects:
the invention enables the clutch to obtain the optimal comprehensive performance by quantitatively changing the circular arc groove areas of the friction plates at different axial positions, improves the thermal load environment in the middle of the clutch by the friction plate at the middle position, and improves the friction torque of the clutch by the friction plates at the two sides of the clutch, so that the clutch obtains excellent friction torque, lower temperature rise and lower abrasion, the service life of a friction element is prolonged, the reliability of the clutch is improved, and even the safety of a transmission system and the whole vehicle is improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic illustration of the friction element arrangement of the present invention;
FIG. 3 is a front view of a friction plate of the present invention;
FIG. 4 is a side view of a friction plate of the present invention;
in the figure, 1, a piston; 2. an oil cylinder; 3. a cylinder liner; 4. dual steel sheets; 5. a friction plate; 5A, a first friction plate; 5B, a second friction plate; 6. pressing a plate; 7. a limit snap ring; 501. a circular arc groove; 502. a layer of friction material.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.
As shown in fig. 1 and 2, the invention provides a wet-type multi-plate type gear shifting clutch, which comprises a cylinder sleeve 3, wherein a piston 1 and a pressure plate 6 are arranged in the cylinder sleeve 3, a plurality of dual steel plates 4 and a plurality of friction plates 5 are arranged between the piston 1 and the pressure plate 6, the dual steel plates 4 and the friction plates 5 are alternately arranged, arc grooves 501 are arranged on two sides of each friction plate 5, and the dual steel plates 4 are straight steel plates. The friction plates 5 are divided into two types, including a first friction plate 5A and a second friction plate 5B, wherein first arc grooves are arranged on two sides of the first friction plate 5A, and second arc grooves are arranged on two sides of the second friction plate 5B. Along the direction from the piston 1 to the pressure plate 6, the first friction plate 5A is arranged at the middle position in the axial direction of the clutch, the second friction plates 5B are uniformly arranged at two sides of the first friction plate 5A, and the area proportion of the first arc-shaped groove to the first friction plate 5A is smaller than that of the second arc-shaped groove to the second friction plate 5B. The invention enables the clutch to obtain the optimal comprehensive performance by quantitatively changing the circular arc groove areas of the friction plates at different axial positions, improves the thermal load environment in the middle of the clutch by the friction plate at the middle position, and improves the friction torque of the clutch by the friction plates at the two sides of the clutch, so that the clutch can obtain excellent friction torque, lower temperature rise and lower abrasion, the service life of the clutch is prolonged, the reliability of the clutch is improved, and the safety of a transmission system and the whole vehicle is even improved.
In one embodiment of the present invention, the number ratio of the first friction plates 5A to the second friction plates 5B is 1 to 2. Specifically, when the clutch is a clutch comprising three friction plates 5, the number of the first friction plates 5A is 1, the number of the second friction plates 5B is 2, and the arrangement mode of the friction elements is 1-4-5B-4-5A-4-5B-6; when the clutch is a clutch containing six friction plates 5, the number of the first friction plates 5A is 2, the number of the second friction plates 5B is 4, the arrangement mode of the friction elements is 1-4-5B-4-5B-4-5A-4-5A-4-5B-4-5B-6, and the like. The friction plate arrangement described above allows the clutch to achieve optimum overall performance.
As shown in fig. 3 to 4, in an embodiment of the present invention, the circular arc grooves 501 are disposed on the friction material layer 502 on both sides of the friction plate 3, and the circular arc grooves 501 are double circular arc grooves equally divided by 45 °, that is, the included angle between the two circular arc grooves is 45 ° and 135 °.
In an embodiment of the present invention, the area of the first arc groove accounts for 30% to 40% of the area of the first friction plate 5A, and the area of the second arc groove accounts for 45% to 55% of the area of the second friction plate 5B. The design ensures that the first friction plate 5A has excellent comprehensive performance, moderate generated friction torque, good heat dissipation performance and lower surface temperature, and the friction plate is not easy to wear and is placed in the axial middle position of the clutch; while the second friction plate 5B can generate a large friction torque and is excellent in heat radiation performance, but the specific pressure of the contact area is too large to cause severe wear, so it is placed close to the piston 1 and the pressure plate 6.
Preferably, the area of the first circular arc groove accounts for 35% of the area of the first friction plate 5A, and the area of the second circular arc groove accounts for 50% of the area of the second friction plate 5B. When the area of the first arc groove accounts for 35% of the area of the first friction plate 5A, the effect of improving the thermal load environment in the middle of the clutch through the first friction plate 5A is the best; when the area of the second arc groove occupies 50% of the area of the second friction plate 5B, the effect of increasing the friction torque of the clutch by the second friction plates 5B on both sides of the clutch is the best.
Further, when the area of the first arc groove accounts for 30% -40% of the area of the first friction plate 5A, the width of the first arc groove is 0.8 mm-1.2 mm; when the area of the second arc groove accounts for 45% -55% of the area of the second friction plate 5B, the width of the second arc groove is 1.3 mm-1.7 mm. Preferably, when the area of the first arc groove accounts for 35% of the area of the first friction plate 5A, the width of the first arc groove is 1mm, and the design optimizes the effect of improving the thermal load environment in the middle of the clutch by the first friction plate 5A; when the area of the second arc groove accounts for 50% of the area of the second friction plate 5B, the width of the second arc groove is 1.5mm, and the design optimizes the effect of improving the friction torque of the clutch by the second friction plates 5B on both sides of the clutch.
In one embodiment of the invention, a limiting snap ring 7 is arranged in a groove of the cylinder sleeve 3, and the limiting snap ring 7 is connected with the pressure plate 6.
In one embodiment of the present invention, the dual steel plates 4 and the friction plates 5 can be used as active plates or passive plates.
In one embodiment of the invention, the dual steel sheets 4 are circumferentially connected with the cylinder sleeve 3, and the friction plate 5 is connected with the input gear 8. When the friction plate 5 is used as an active plate, the friction plate 5 is connected with the input gear 8 through an internal spline, and the dual steel plate 4 is circumferentially meshed with the spline on the cylinder sleeve 3 through an external spline. When the clutch is engaged, control oil enters the cavity of the piston 1, overcomes the resistance of the separation spring to push the piston 1 to move along the axial direction, eliminates the clearance of the friction element, and realizes the transmission of torque by the sliding friction between the dual steel sheet 4 and the friction plate 5.
In an embodiment of the present invention, the material of the dual steel sheet 4 is the same as that of the pressing plate 6, and the thickness of the pressing plate 6 is greater than that of the dual steel sheet 4.
The invention has the following beneficial effects:
the invention enables the clutch to obtain the optimal comprehensive performance by quantitatively changing the circular arc groove areas of the friction plates at different axial positions, improves the thermal load environment in the middle of the clutch by the friction plate at the middle position, and improves the friction torque of the clutch by the friction plates at the two sides of the clutch, so that the clutch obtains excellent friction torque, lower temperature rise and lower abrasion, the service life of a friction element is prolonged, the reliability of the clutch is improved, and even the safety of a transmission system and the whole vehicle is improved.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
The invention is described above by way of example, and it is obvious that the implementation of the invention is not limited by the above-mentioned manner, and it is within the scope of the invention to adopt various modifications of the inventive method concept and technical solution, or to apply the inventive concept and technical solution to other occasions without modification.
Claims (9)
1. A wet type multi-plate type gear shifting clutch is characterized by comprising a cylinder sleeve, wherein a piston and a pressure plate are arranged in the cylinder sleeve, a plurality of dual steel plates and a plurality of friction plates are arranged between the piston and the pressure plate, the dual steel plates and the friction plates are alternately arranged, the friction plates comprise a first friction plate and a second friction plate, first arc grooves are formed in two sides of the first friction plate, second arc grooves are formed in two sides of the second friction plate,
the first friction plate is arranged at the middle position in the axial direction of the clutch along the direction from the piston to the pressure plate, the second friction plate is arranged on two sides of the first friction plate, and the area proportion of the first arc groove to the first friction plate is smaller than that of the second arc groove to the second friction plate.
2. The wet multiple disc shifting clutch according to claim 1, wherein a ratio of the number of the first friction plate to the second friction plate is 1 to 2, and the second friction plate is uniformly disposed on both sides of the first friction plate.
3. The wet multiplate shifting clutch of claim 1, wherein the area of the first circular arc groove accounts for 30-40% of the area of the first friction plate, and the area of the second circular arc groove accounts for 45-55% of the area of the second friction plate.
4. The wet multiplate shifting clutch of claim 3, wherein the area of the first circular arc groove accounts for 35% of the area of the first friction plate, and the area of the second circular arc groove accounts for 50% of the area of the second friction plate.
5. The wet multiplate shifting clutch of claim 3, wherein the first circular arc groove has a width of 0.8mm to 1.2mm, and the second circular arc groove has a width of 1.3mm to 1.7 mm.
6. The wet multiplate shifting clutch of claim 5, wherein the first circular arc groove has a width of 1mm and the second circular arc groove has a width of 1.5 mm.
7. The wet multiple disc shifting clutch according to claim 1, wherein the first circular arc groove and the second circular arc groove are both 45 ° bisected double circular arc grooves.
8. The wet multiplate shifting clutch of claim 1, wherein the dual steel plates are flat steel plates.
9. The wet multiple disc shifting clutch according to claim 1, wherein a limit snap ring is disposed in a groove of the cylinder sleeve, and the limit snap ring is connected to the pressure plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010311049.4A CN111486183B (en) | 2020-04-20 | 2020-04-20 | Wet-type multiplate formula clutch of shifting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010311049.4A CN111486183B (en) | 2020-04-20 | 2020-04-20 | Wet-type multiplate formula clutch of shifting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111486183A true CN111486183A (en) | 2020-08-04 |
| CN111486183B CN111486183B (en) | 2021-09-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010311049.4A Expired - Fee Related CN111486183B (en) | 2020-04-20 | 2020-04-20 | Wet-type multiplate formula clutch of shifting |
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| CN (1) | CN111486183B (en) |
Citations (18)
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| EP1106855A2 (en) * | 1999-11-30 | 2001-06-13 | BorgWarner Automotive GmbH | Annular friction-clutch facing for a multi-disk clutch |
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| WO2007038228A2 (en) * | 2005-09-22 | 2007-04-05 | Raytech Composites, Inc. | Friction plates and reaction plates for friction clutches and brakes with reduced thermal stresses |
| JP2012017808A (en) * | 2010-07-08 | 2012-01-26 | Aisin Chemical Co Ltd | Wet multiple disc clutch |
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| CN105987094A (en) * | 2015-02-13 | 2016-10-05 | 中国北方车辆研究所 | Modified clutch |
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-
2020
- 2020-04-20 CN CN202010311049.4A patent/CN111486183B/en not_active Expired - Fee Related
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| US20150053525A1 (en) * | 2008-05-15 | 2015-02-26 | Ker-Train Holdings Ltd. | Concentric v-groove coupling |
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| CN111486183B (en) | 2021-09-21 |
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