CN110701209B - Synchronous gear shifting wet type hydraulic clutch for automatic gearbox - Google Patents
Synchronous gear shifting wet type hydraulic clutch for automatic gearbox Download PDFInfo
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- CN110701209B CN110701209B CN201911021338.4A CN201911021338A CN110701209B CN 110701209 B CN110701209 B CN 110701209B CN 201911021338 A CN201911021338 A CN 201911021338A CN 110701209 B CN110701209 B CN 110701209B
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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 36
- 238000005245 sintering Methods 0.000 claims abstract description 23
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 22
- 238000001816 cooling Methods 0.000 claims abstract description 22
- 239000010959 steel Substances 0.000 claims abstract description 22
- 239000000758 substrate Substances 0.000 claims abstract description 20
- 230000005540 biological transmission Effects 0.000 claims abstract description 17
- 238000007789 sealing Methods 0.000 claims abstract description 11
- 239000003921 oil Substances 0.000 claims description 119
- 230000006835 compression Effects 0.000 claims description 20
- 238000007906 compression Methods 0.000 claims description 20
- 238000003825 pressing Methods 0.000 claims description 16
- 230000001050 lubricating effect Effects 0.000 claims description 12
- 239000010720 hydraulic oil Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 11
- 238000009434 installation Methods 0.000 abstract description 7
- 238000005461 lubrication Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 5
- 239000002184 metal Substances 0.000 abstract description 5
- 238000005299 abrasion Methods 0.000 abstract description 4
- 239000010425 asbestos Substances 0.000 abstract description 4
- 229910052895 riebeckite Inorganic materials 0.000 abstract description 4
- 230000003068 static effect Effects 0.000 abstract description 4
- 230000007246 mechanism Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000008713 feedback mechanism Effects 0.000 description 1
- 239000002783 friction material Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Abstract
The invention discloses a synchronous gear shifting wet type hydraulic clutch for an automatic gearbox, which comprises a power input/output component, a friction pair component, a control execution component, a synchronous feedback component and a sealing component. The invention is an integrated design, integrates four parts of control, execution, cooling and lubrication, improves the working stability and the transmission efficiency of the clutch through the integrated design, reduces the daily maintenance cost, saves the installation space, and has simpler and more convenient and flexible use method. The friction pair is a wet-type multi-plate structure formed by alternately installing steel and sintering/paper substrates, has the characteristics of high specific pressure, large friction coefficient, small abrasion coefficient and high heat capacity, determines that the torque generated by small clutch volume is large, can generate very high torque under very small inertia, basically does not need maintenance, is made of metal sintering materials, does not pollute the environment due to no asbestos component, has small ratio of dynamic friction coefficient to static friction coefficient, and does not generate noise due to meshing balance.
Description
Technical Field
The invention relates to the technical field of clutches, in particular to a synchronous gear shifting wet type hydraulic clutch for an automatic gearbox.
Background
Clutches are common components in mechanical transmissions that can disengage or engage the transmission system at any time. The traditional clutch has unreasonable structural design, lower working stability and transmission efficiency, high daily maintenance cost and inconvenient installation. Therefore, a clutch with high stability and transmission efficiency, low maintenance cost and simple and flexible use method is urgently needed.
Disclosure of Invention
The invention aims to provide a synchronous gear shifting wet type hydraulic clutch for an automatic gearbox, which is used for improving the anti-disorder capacity, stability and transmission efficiency of the clutch, reducing the development cost of the automatic gearbox and saving the installation space.
In order to achieve the above object, the present invention provides the following solutions:
The invention provides a synchronous gear shifting wet type hydraulic clutch for an automatic gearbox, which comprises the following components:
The power input/output assembly comprises a clutch hub, an outer gear ring A and an outer gear ring B, wherein an inner hole of the clutch hub is used for being connected with a central power shaft, a stop ring is sleeved on the outer circle of the clutch hub, and the stop ring is limited by a retainer ring; the clutch hub is simultaneously connected with a clutch A and a clutch B, the clutch A and the clutch B are sleeved on the outer circle of the clutch hub through a clutch A friction pair and a clutch B friction pair respectively and are positioned on two sides of the stop ring respectively, and the outer tooth ring A and the outer tooth ring B are connected with the clutch A friction pair and the clutch B friction pair respectively; the clutch hub is internally provided with a lubricating and cooling oil way, the upper end of the throttling hole is provided with a throttling plug in a pressing mode, the outer rim of the clutch hub is provided with axial cooling and lubricating holes uniformly distributed on the circumference, and both ends of each axial cooling and lubricating hole are provided with ball plugs;
the control execution component comprises a clutch A control oil cylinder, a clutch B control oil cylinder and an emptying one-way valve, wherein the clutch A control oil cylinder and the clutch B control oil cylinder are respectively fixed on the left end face and the right end face of the clutch hub through bolts; the clutch A control oil cylinder comprises a compression cylinder cover, a piston type pressing plate and a cylinder sleeve, wherein the compression cylinder cover is sleeved on a short boss of the cylinder sleeve, the piston type pressing plate is sleeved on the compression cylinder cover and the outer circle of the cylinder sleeve, and the emptying check valve is arranged between the compression cylinder cover and the cylinder sleeve and symmetrically arranged in the circumferential direction; the clutch B control oil cylinder and the clutch A control oil cylinder are identical in structure and symmetrically arranged;
The synchronous feedback component comprises a piston common reset spring, an A2 balance oil cavity and a B2 balance oil cavity, wherein the piston common reset spring is arranged in a circumferential axial hole at a spoke of the clutch hub and is connected between a piston type pressing plate of the clutch A control oil cylinder and a piston type pressing plate of the clutch B control oil cylinder in a compressed state; the A2 balance oil cavity is surrounded by the clutch A control oil cylinder and the clutch hub, the B2 balance oil cavity is surrounded by the clutch B control oil cylinder and the clutch hub, and the A2 balance oil cavity and the B2 balance oil cavity are connected in series to share one path of oil liquid control.
Optionally, an external spline is machined on the outer circle of the clutch hub and used for connecting the friction pair assembly, a snap spring groove is machined in the middle of the external spline, and the stop ring is sleeved on the external spline through an internal spline.
Optionally, threaded holes uniformly distributed on the circumference are machined on two end surfaces of the clutch hub, and the threaded holes are used for installing the clutch A control oil cylinder and the clutch B control oil cylinder.
Optionally, the friction pair assembly comprises a sintering/paper substrate and a steel sheet, and the sintering/paper substrate and the steel sheet are alternately sleeved on the external spline.
Optionally, the clutch control device further comprises a seal lining ring, wherein a plurality of radial circumference holes are formed in the seal lining ring, the seal lining ring is embedded in an inner hole of the compression cylinder cover, and the seal lining ring can form an annular seal groove in transition fit with the outer circle of the central power shaft so as to control hydraulic oil to enter the clutch A control cylinder and/or the clutch B control cylinder from the radial holes of the central power shaft through the radial circumference holes.
Optionally, the cylinder sleeve and the outer circular groove of the compression cylinder cover are respectively sleeved with a first O-shaped ring and a check ring.
Optionally, a second O-ring is disposed in the rim hole groove of the clutch hub.
Alternatively, the inner friction plates of the clutch a and the inner friction plates of the clutch B are both driven by the clutch hub.
Compared with the prior art, the invention has the following technical effects:
The synchronous gear shifting wet type hydraulic clutch for the automatic gearbox adopts a synchronous action linkage feedback design of two clutches, so that the possibility of preventing gear shifting is realized, and the feedback time of any clutch is saved, so that the gear shifting speed is improved; the control execution part and the synchronous feedback part adopt an integrated design, so that the working stability and the transmission efficiency of the clutch are improved through the integrated design, the daily maintenance cost is greatly reduced, the installation space is saved, and the use method is simpler, more convenient and more flexible; the clutch is in wet operation, and a lubricating and cooling device is integrated, so that the working reliability is improved.
Meanwhile, the friction pair comprises a steel sheet and a sintering/paper substrate, is of a wet-type multi-sheet structure, has the characteristics of high specific pressure, large friction coefficient, small abrasion coefficient and high heat capacity, determines that the clutch is small in volume and large in generated torque, can generate very high torque under very small inertia, basically does not need maintenance, is made of metal sintering materials, does not pollute the environment due to asbestos components, has small ratio of dynamic and static friction coefficients, and is meshed and balanced and does not generate noise.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic cross-sectional view of a wet hydraulic clutch for synchronous shifting for an automatic transmission according to the present invention;
FIG. 2 is a schematic diagram of the installation structure of a synchronous shift wet hydraulic clutch for an automatic transmission according to the present invention;
Wherein, the reference numerals are as follows: 1-sintering/paper substrate; 2-steel sheet; 3-stop ring; 4. 19-a retainer ring; 5. 12-piston press plate; 6. 14-emptying a one-way valve; 7. 15-compacting the cylinder cover; 8. 16-cylinder sleeve; 9. 17-a seal collar; 10-a first O-ring; 11-a piston common return spring; 13-a clutch hub; 18-ball blocking; 20-a throttle plug; 21-an outer ring gear B; 22-outer ring gear a; 23. a second O-ring; 24-lubricating and cooling oil ways; 25-A2 balance oil chamber; 26-B2 balance oil chamber; 27-A1 oil chamber; 28-B1 oil chamber; 29-orifice.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Embodiment one:
As shown in fig. 1 to 2, the present embodiment provides a synchronous shift wet hydraulic clutch for an automatic transmission, including a power input output assembly, a control execution part, and a synchronous feedback part; wherein,
The power input-output assembly includes a clutch hub 13, an outer ring gear B21, and an outer ring gear a22. The clutch hub 13 serves as a clutch main body member, and the clutches A, B share one clutch hub 13. The clutch hub 13 is internally splined or flat keyed for connection to a central power shaft. The clutch hub 13 is externally provided with splines for connecting the steel sheet 2 with internal splines. The middle of the external spline of the clutch hub 13 is provided with a snap ring groove, the stop ring 3 is sleeved on the external spline of the clutch hub 13 through an internal spline and limited by the retainer ring 4, the clutch hub 13 is divided into a left part and a right part, and friction pair assemblies of the clutch A, B are respectively sleeved on the left side and the right side of the clutch hub 13. Threaded holes uniformly distributed on the circumference are processed on the two end surfaces of the clutch hub 13 and are used for connecting and fixing a clutch A control oil cylinder and a clutch B control oil cylinder. The clutch hub 13 is provided with a lubrication/cooling oil passage 24 and a throttle plug 20 is pressed against the upper end of a throttle hole 29 to maintain the oil pressure of the A2 balance oil chamber 25 and the B2 balance oil chamber 26. The clutch hub 13 has axially cooling and lubricating holes distributed circumferentially and homogeneously in the outer rim, and the two ends are plugged with ball plugs 18 to flow lubricating and cooling oil to the friction pair assembly via several radial holes to provide lubricating and cooling for the steel sheet 2 and the sintered/paper substrate 1. The outer gear ring A22 is connected with the outer friction plate sintering/paper substrate 1 of the clutch A, and the outer gear ring B21 is connected with the sintering/paper substrate 1 of the clutch B. The outer ring gear A, B may be used as a power input or output member, respectively, and the clutch hub 13 may be used as a power input or output member.
Wherein, the friction pair component consists of a sintering/paper substrate 1 and a steel sheet 2. In each clutch, an inner friction plate steel sheet 2 is used, the steel sheet 2 is driven by a clutch hub 13, and an outer friction plate sintering/paper substrate 1 is driven by an outer gear ring A, B. The inner friction plate or the outer friction plate can be a driving piece or a driven piece, and the inner friction plate and the outer friction plate can be made of friction materials, so that the clutch is characterized in that the clutch is dependent on the using condition of the gearbox. The friction plate must be matched with other driving parts for use, and the number of friction pairs depends on the magnitude of clutch torque. The sintered/paper substrate 1 and the steel sheet 2 in the friction pair are alternately sleeved on the external spline of the clutch hub 13.
The control executing component comprises a clutch A control oil cylinder, a clutch B control oil cylinder and a drain check valve 6/14, and can respectively control the engagement and the separation of the clutch A, B. The clutch a control cylinder and the clutch B control cylinder are fixed to the left and right sides of the clutch hub 13 by bolts, respectively. The clutch A control oil cylinder consists of a compression cylinder cover 7, a piston type pressing plate 5 and a cylinder sleeve 8, and the clutch B control oil cylinder consists of a compression cylinder cover 15, a piston type pressing plate 12 and a cylinder sleeve 16. The cylinder sleeve 8/16 and the outer circular groove of the compacting cylinder cover 7/15 are respectively sleeved with a first O-shaped ring 10 and a check ring 19; the compression cylinder cover 7/15 is sleeved on the short boss of the cylinder sleeve 8/16, and the piston type pressing plate 5/12 is sleeved on the outer circles of the compression cylinder cover 7/15 and the cylinder sleeve 8/16. The emptying check valves 6/14 are arranged between the compression cylinder cover 7/15 and the cylinder sleeve 8/16 in a symmetrical way in the circumferential direction. And the oil in the oil cavity 27 and the oil in the oil cavity 28 of the oil cavity A1 and the oil in the oil cavity B1 are emptied under the high-speed rotation working condition, so that misoperation of the control oil cylinder of the clutch A and the control oil cylinder of the clutch B is prevented. The clutch a control cylinder and the clutch B control cylinder are fixed to the left and right end surfaces of the clutch hub 13 by bolts, respectively.
The synchronous feedback component comprises a clutch A, a common piston return spring 11 common to pistons of an oil cylinder of the clutch B, an A2 balance oil cavity 25 and a B2 balance oil cavity 26, wherein the common piston return spring 11 is arranged in a circumferential axial hole at a spoke of a clutch hub 13, and a proper compression amount is selected according to the size of the clutch. A piston press 5 and a piston press 12 to reset the clutch A, B. The A2 balance oil chamber 25 and the B2 balance oil chamber 26 are formed by a control cylinder of the clutch A, B combined with the clutch hub 13 to form a cavity. The A2 balance oil chamber 25 and the B2 balance oil chamber 26 are sealed by a second O-ring 23 mounted in a rim hole groove of the clutch hub 13. The A2 balance oil chamber 25, the B2 balance oil chamber 26, and the piston common return spring 11 together ensure rapid disengagement of the clutch A, B.
Meanwhile, the embodiment also comprises a sealing part, which consists of a sealing lining ring 9/17 and a compression cylinder cover 7/15. The sealing lining ring 9/17 is embedded in the inner hole of the compression cylinder cover 7/15. The seal lining ring 9/17 is in transition fit with the outer circle of the central power shaft to form an annular seal groove, so that hydraulic oil is controlled to enter the clutch A control oil cylinder and the clutch B control oil cylinder from radial circumferential holes of the radial Kong Jingmi seal lining ring 9/17 of the power shaft, and the effect of sealing and preventing leakage is achieved.
For a clearer illustration of an embodiment of the present invention, reference is made to fig. 2 for an example of a dual countershaft, four-speed automatic transmission incorporating a synchronous shifting wet clutch.
The automatic transmission of this embodiment has two states of disengagement and engagement between the clutches A, B with the wet hydraulic clutch for synchronous gear shifting. The A2 balance oil chamber 25 and the B2 balance oil chamber 26 are located on the back sides of the A1 oil chamber 27 and the B1 oil chamber 28, respectively. In the neutral state, oil in the A1 oil cavity 27 and the B1 oil cavity 28 of the clutch A, B has no control pressure, the piston pressing plate 5/12 resets under the combined action of the common piston return spring 11, the A2 balance oil cavity 25 and the B2 balance oil cavity 26, at the moment, the emptying one-way valve 6/14 is opened under the action of the rotating centrifugal force, and the oil compressed by the centrifugal force is discharged out of the A1 oil cavity 27 and the B1 oil cavity 28, so that the phenomenon of misoperation of the clutch A, B is avoided. The friction pair of clutch A, B is in a free state, the power input shaft transmits power to clutch hub 13, the inner friction plate steel sheet 2 of clutch A, B matched with the clutch is in a free rotation state, and the power is not transmitted to the outer friction plate sintering/paper substrate 1 of clutch A, B. At this time, the input shaft is in an idle state, and no power is output.
And when the clutch A works, the oil port of the clutch B is depressurized. The control oil from the control valve enters an axial oil passage corresponding to the rotary sealing mechanism through an oil port A, enters six oil passages A uniformly distributed on the circumference between a cylinder cover 7 and a cylinder sleeve 8 through a sealing lining ring 9, then enters an oil cavity A1, and is emptied to close a check valve 6 under the action of oil pressure, and compressed oil continuously pushes a piston pressing plate 5 to move towards a stop ring 3 to compress an outer friction plate sintering/paper substrate 1 and an inner friction plate steel sheet 2. At this time, power is transmitted to the inner friction plate steel sheet 2 of the clutch A matched with the clutch hub 13, the plurality of steel sheets 2 transmit power to the outer friction plate sintering/paper substrate 1 matched with the outer gear ring A22 through friction force, the outer gear ring A22 transmits power to the sun gear at the left side of the clutch A, and the sun gear transmits power to the intermediate shaft gear meshed with the sun gear.
And when the clutch B works, the oil port A is depressurized. The control oil from the control valve enters an axial oil passage corresponding to the rotary sealing mechanism through an oil port B, enters six B oil passages uniformly distributed on the circumference between the cylinder cover 15 and the cylinder sleeve 16 through a sealing liner ring 17, then enters a B1 oil cavity 28, the emptying one-way valve 18 is closed under the action of oil pressure, and the compressed oil continuously pushes the piston pressing plate 12 to move towards the direction of the stop ring 3 so as to compress the outer friction plate sintering/paper substrate 1 and the inner friction plate steel sheet 2. At this time, the power is transmitted to the inner friction plate steel sheet 2 of the clutch B matched with the clutch hub 13, the plurality of steel sheets 2 transmit the power to the outer friction plate sintering/paper substrate 1 matched with the outer gear ring B21 through friction force, the outer gear ring B21 transmits the power to the sun gear on the right side of the clutch B, and the sun gear transmits the power to the intermediate shaft gear meshed with the sun gear.
The clutch B is engaged while pushing the pre-compressed piston common return spring 11 to move in the direction of the clutch a, which in turn pushes the piston pressure plate 5 of the clutch a to move away from the stop ring 3. While the oil in the B2 balance oil chamber 26 of clutch B is compressed by the piston type pressure plate 12 to flow into the A2 balance oil chamber 25 of clutch a. The clutch a is rapidly released under the combined action of the oil pressures in the piston common return spring 11 and the A2 balance oil chamber 25, and the engagement of the clutch B and the release of the clutch a are completed at approximately the same time.
The lubrication cooling oil enters the lubrication cooling oil passage 24 through an axial cooling lubrication hole corresponding to the rotary seal mechanism, a small portion of the lubrication cooling oil enters the A2 balance oil chamber 25 and the B2 balance oil chamber 26 of the clutch A, B, and another portion enters the friction pair assembly of the clutch A, B through the throttle plug 20 to provide reliable cooling. The throttle of the throttle plug 20 promotes maintenance of a certain low oil in the lubrication-cooling passage 24. Since the A2 balance oil chamber 25 and the B2 balance oil chamber 26 are connected in series with the lubrication cooling oil passage 24 through the orifice 29, in neutral, the low oil pressure acts on the inner sides of the piston type pressure plate 5 and the piston type pressure plate 12 together, so that the piston type pressure plate 5 and the piston type pressure plate 12 do not move in the direction of the stop ring 3, thereby eliminating the malfunction of the clutch A, B.
In the four-gear box example, two wet hydraulic clutches for synchronous gear shifting are arranged. Can be freely combined according to gear requirements.
In the prior art, the friction pair has various types, the adopted friction pair is of a wet-type multi-sheet structure, the outer friction sheet sintering/paper substrate 1 is of a metal sintering sheet, the inner friction sheet is of a steel sheet 2, the specific pressure is high, the friction coefficient is large, the abrasion coefficient is small, the heat capacity is high, the characteristics of the friction pair determine that the torque generated by the small clutch volume is large, the combined structure form can generate very high torque under very small inertia, maintenance is basically not needed, the friction pair is of a metal sintering material, no asbestos component can not pollute the environment, the ratio of dynamic friction coefficient to static friction coefficient of the multi-sheet structure is small, and the meshing balance can not generate noise. Other materials of friction plates can be selected by those skilled in the art according to the working conditions.
Compared with the prior art, the synchronous gear shifting wet hydraulic clutch for the automatic gearbox adopts a two-clutch synchronous action linkage feedback design, so that the possibility of preventing wrong gear shifting is realized, and the feedback time of any clutch is saved, so that the gear shifting speed is improved. And the control execution part and the synchronous feedback part adopt an integrated design. The working stability and the transmission efficiency of the clutch are improved through the integrated design, the daily maintenance cost is greatly reduced, the installation space is saved, and the using method is simpler, more convenient and flexible. The clutch is in wet operation, and a lubricating and cooling device is integrated, so that the working reliability is improved. The main machine factory of the gearbox can change the mechanical synchronizer into a synchronous gear shifting wet type hydraulic clutch based on the traditional manual gearbox, and then can change the mechanical synchronizer into an automatic gearbox (parallel shaft type) by matching with a corresponding control system, so that the development cost is directly reduced. The automatic gearbox with the synchronous gear shifting wet hydraulic clutch is different from the traditional parallel shaft AMT gearbox, the double clutch gearbox and the parallel shaft AT gearbox. The synchronous gear shifting wet type hydraulic clutch of the embodiment does not have a gear shifting fork of an AMT gearbox and a double-clutch gearbox, so that gear shifting is more reliable and faster, and is different from a parallel shaft AT gearbox (Honda), the double clutch body of the synchronous gear shifting wet type hydraulic clutch has no synchronous action linkage feedback mechanism, the possibility of gear shifting is avoided, feedback time is saved, and therefore the teaching of a computer control system is simplified.
Therefore, the synchronous action linkage feedback design of the two clutches is adopted by the synchronous gear shifting wet type hydraulic clutch for the automatic gearbox, so that the possibility of preventing wrong gear shifting is realized, and the feedback time of any clutch is saved, so that the gear shifting speed is improved; the control execution part and the synchronous feedback part adopt an integrated design, so that the working stability and the transmission efficiency of the clutch are improved through the integrated design, the daily maintenance cost is greatly reduced, the installation space is saved, and the use method is simpler, more convenient and more flexible; the clutch is in wet operation, and a lubricating and cooling device is integrated, so that the working reliability is improved.
Meanwhile, the friction pair comprises a steel sheet and a sintering/paper substrate, is of a wet-type multi-sheet structure, has the characteristics of high specific pressure, large friction coefficient, small abrasion coefficient and high heat capacity, determines that the clutch is small in volume and large in generated torque, can generate very high torque under very small inertia in the combined structure mode, basically does not need maintenance, is made of metal sintering materials, does not pollute the environment due to asbestos components, has small ratio of dynamic and static friction coefficients, and is meshed and balanced and does not generate noise.
It should be noted that it will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
The principles and embodiments of the present invention have been described in detail with reference to specific examples, which are provided to facilitate understanding of the method and core ideas of the present invention; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.
Claims (5)
1. A synchronous shift wet hydraulic clutch for an automatic transmission, comprising:
The power input/output assembly comprises a clutch hub, an outer gear ring A and an outer gear ring B, wherein an inner hole of the clutch hub is used for being connected with a central power shaft, a stop ring is sleeved on the outer circle of the clutch hub, and the stop ring is limited by a retainer ring; the clutch hub is simultaneously connected with a clutch A and a clutch B, the clutch A and the clutch B are sleeved on the outer circle of the clutch hub through a clutch A friction pair and a clutch B friction pair respectively and are positioned on two sides of the stop ring respectively, and the outer tooth ring A and the outer tooth ring B are connected with the clutch A friction pair and the clutch B friction pair respectively; an external spline is processed on the outer circle of the clutch hub and used for connecting the friction pair, a clamp spring groove is processed in the middle of the external spline, and the stop ring is sleeved on the external spline through an internal spline; the friction pair comprises a sintering/paper substrate and a steel sheet, wherein the sintering/paper substrate and the steel sheet are alternately sleeved on the external spline; the clutch hub is internally provided with a lubricating and cooling oil way, the upper end of the throttling hole is provided with a throttling plug in a pressing mode, the outer rim of the clutch hub is provided with axial cooling and lubricating holes uniformly distributed on the circumference, and both ends of each axial cooling and lubricating hole are provided with ball plugs;
the control execution component comprises a clutch A control oil cylinder, a clutch B control oil cylinder and an emptying one-way valve, wherein the clutch A control oil cylinder and the clutch B control oil cylinder are respectively fixed on the left end face and the right end face of the clutch hub through bolts; the clutch A control oil cylinder comprises a compression cylinder cover, a piston type pressing plate and a cylinder sleeve, wherein the compression cylinder cover is sleeved on a short boss of the cylinder sleeve, the piston type pressing plate is sleeved on the compression cylinder cover and the outer circle of the cylinder sleeve, and the emptying check valve is arranged between the compression cylinder cover and the cylinder sleeve and symmetrically arranged in the circumferential direction; the clutch B control oil cylinder and the clutch A control oil cylinder are identical in structure and symmetrically arranged;
The sealing lining ring is provided with a plurality of radial circumference holes, is embedded in the inner hole of the compression cylinder cover and can be in transitional fit with the outer circle of the central power shaft to form an annular sealing groove so as to control hydraulic oil to enter the clutch A control cylinder and/or the clutch B control cylinder from the radial holes of the central power shaft through the radial circumference holes;
The synchronous feedback component comprises a piston common reset spring, an A2 balance oil cavity and a B2 balance oil cavity, wherein the piston common reset spring is arranged in a circumferential axial hole at a spoke of the clutch hub and is connected between a piston type pressing plate of the clutch A control oil cylinder and a piston type pressing plate of the clutch B control oil cylinder in a compressed state; the A2 balance oil cavity is surrounded by the clutch A control oil cylinder and the clutch hub, the B2 balance oil cavity is surrounded by the clutch B control oil cylinder and the clutch hub, and the A2 balance oil cavity and the B2 balance oil cavity are connected in series to share one path of oil liquid control.
2. The synchronous shift wet hydraulic clutch for an automatic gearbox according to claim 1, wherein threaded holes uniformly distributed in circumference are machined on two end surfaces of the clutch hub for installing the clutch a control cylinder and the clutch B control cylinder.
3. The synchronous shift wet hydraulic clutch for an automatic transmission according to claim 1, wherein the cylinder sleeve and the outer circumferential groove of the compression cylinder cover are respectively sleeved with a first O-ring and a check ring.
4. The synchronous shift wet hydraulic clutch for an automatic transmission according to claim 1, wherein a second O-ring is provided in a rim hole groove of the clutch hub.
5. The synchronous shift wet hydraulic clutch for an automatic transmission according to claim 1, wherein the inner friction plates of the clutch a and the inner friction plates of the clutch B are both driven by the clutch hub.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911021338.4A CN110701209B (en) | 2019-10-25 | Synchronous gear shifting wet type hydraulic clutch for automatic gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911021338.4A CN110701209B (en) | 2019-10-25 | Synchronous gear shifting wet type hydraulic clutch for automatic gearbox |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110701209A CN110701209A (en) | 2020-01-17 |
| CN110701209B true CN110701209B (en) | 2024-07-26 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211398355U (en) * | 2019-10-25 | 2020-09-01 | 上海良琦机电设备有限公司 | Synchronous gear shifting wet hydraulic clutch for automatic gearbox |
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211398355U (en) * | 2019-10-25 | 2020-09-01 | 上海良琦机电设备有限公司 | Synchronous gear shifting wet hydraulic clutch for automatic gearbox |
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