Wet-type double clutch assembly

Abstract

The invention relates to a clutch with multiple layers of laminations, in particular to a wet dual clutch assembly. Comprising a first clutch assembly and a second clutch assembly, the first clutch assembly and the second clutch assembly respectively comprise an oil-resistant friction piece combination, each oil-resistant friction piece combination comprises a plurality of paper substrates and steel sheets which are arranged at intervals in a staggered mode, and the paper substrates and the steel sheets are arranged in the axial direction of the wet-type double clutch assembly. The service life of the clutch for the high-horsepower vehicle can be prolonged.

Description

Technical Field

[0001] The invention relates to a clutch with multi-layered plates, in particular to a wet double clutch assembly. Background Art

[0002] At present, the existing dry clutch includes a clutch cover assembly and a clutch driven disc assembly. The clutch driven disc assembly is provided with a dry friction plate. In the actual working process, friction will occur between the friction plate and the clutch cover assembly. Especially when used in vehicles with extremely bad working conditions or when the friction plate and the cover assembly are in a semi-linked state for a long time, the friction plate and the cover assembly are in a friction state for a long time. During the friction process, a high temperature of more than 350°C will be instantly generated. The temperature critical value of the commonly used dry friction plate is about 350°C, so it is easy to burn the plate; in addition, the friction between the friction plate and the clutch cover assembly under high temperature will cause the friction plate to wear faster. Therefore, when the clutch of the existing structure is used in a vehicle with extremely bad working conditions or when the friction plate and the cover assembly are in a semi-linked state for a long time, once it is burned, the clutch must be scrapped and replaced. Frequent replacement of the clutch not only greatly reduces the working efficiency of the vehicle, but also increases the cost of using the vehicle.

[0003] Especially for the manual and automatic transmissions of wide-body mining vehicles, engineering vehicles, and commercial trucks with large load capacity, they have high horsepower, long continuous working hours, and harsh working environments, and their clutch scrapping rate is higher. Summary of the invention

[0004] The purpose of the present invention is to overcome the above-mentioned defects in the prior art and to provide a wet dual clutch assembly which can extend the service life of a clutch for a high-horsepower vehicle.

[0005] The technical solution of the present invention is: a wet dual clutch assembly, which includes a first clutch assembly and a second clutch assembly, the first clutch assembly and the second clutch assembly respectively include an oil-resistant friction component combination, the oil-resistant friction component combination includes a plurality of paper substrates and steel sheets arranged at staggered intervals, and the paper substrates and steel sheets are arranged along the axial direction of the wet dual clutch assembly.

[0006] In the present invention, the first clutch assembly and the second clutch assembly are fixedly connected via an intermediate fixed plate.

[0007] The first clutch assembly includes:

[0008] The first clutch flywheel disc has a plurality of oil inlet and outlet holes on its hole wall, and its outer circular end portion is fixedly connected to the outer ring of the first clutch;

[0009] The first clutch outer ring is located between the first clutch flywheel disc and the intermediate fixed disc, and is fixedly connected to the first clutch flywheel disc and the intermediate fixed disc, and is connected to the outer teeth of the oil-resistant friction member assembly;

[0010] A first oil cylinder piston, a first clutch flywheel disc, a first clutch outer ring and an intermediate fixed disc form a first sealed chamber, the first oil cylinder piston and an oil-resistant friction member combination are arranged in the first sealed chamber, the first oil cylinder piston contacts the oil-resistant friction member combination through a first pressure plate, and an oil cylinder return spring is connected between the first pressure plate and the first clutch outer ring;

[0011] The first hub has outer teeth, and the first hub is fixed in the center hole thereof. The outer teeth of the first hub are connected to the inner teeth of the oil-resistant friction component combination, and the first hub is connected to the power input shaft of the first gearbox.

[0012] The second clutch assembly includes:

[0013] A second clutch flywheel disc, the outer circumferential end of which is fixedly connected to the outer ring of the second clutch;

[0014] The second clutch outer ring is located between the second clutch flywheel disc and the middle fixed disc, and is fixedly connected to the second clutch flywheel disc and the middle fixed disc, and is connected to the outer teeth of the oil-resistant friction member assembly;

[0015] A second cylinder piston, a second clutch flywheel disc, a second clutch outer ring and an intermediate fixed disc form a second sealed chamber, the second cylinder piston and an oil-resistant friction member combination are arranged in the second sealed chamber, the second cylinder piston contacts the oil-resistant friction member combination through a second pressure plate, and a cylinder return spring is connected between the second pressure plate and the second clutch outer ring;

[0016] The second hub has outer teeth, and the second hub is fixed in the center hole. The outer teeth of the second hub are connected with the inner teeth of the oil-resistant friction component combination, and the second hub is connected with the power input shaft of the second gearbox.

[0017] The oil-resistant friction component assembly also includes a release spring;

[0018] The outer edge of the steel sheet is connected to the first clutch outer ring and the second clutch outer ring by teeth, a separation spring is arranged between the outer edges of adjacent steel sheets, and the inner edge of the paper base sheet is connected to the outer teeth of the first disc hub and the second disc hub by teeth.

[0019] The first oil cylinder piston and the second oil cylinder piston are located between the two oil-resistant friction component assemblies;

[0020] At this time, the oil-resistant friction component combination in the first clutch assembly is located between the first clutch flywheel disc and the first pressure plate, and the oil-resistant friction component combination in the second clutch assembly is located between the second clutch flywheel disc and the second pressure plate.

[0021] The two oil-resistant friction parts combination can also be located between the first cylinder piston and the second cylinder piston; at this time, the oil-resistant friction parts combination in the first clutch assembly is located between the middle fixed plate and the first pressure plate, and the oil-resistant friction parts combination in the second clutch assembly is located between the middle fixed plate and the second pressure plate.

[0022] The oil-resistant friction component combination in the first clutch assembly is located between the intermediate fixed plate and the first pressure plate, while the oil-resistant friction component combination in the second clutch assembly is located between the second pressure plate and the second clutch flywheel plate;

[0023] Alternatively, the oil-resistant friction component combination in the first clutch assembly is located between the first pressure plate and the first clutch flywheel plate, and the oil-resistant friction component combination in the second clutch assembly is located between the second pressure plate and the intermediate fixed plate.

[0024] The middle fixed plate and the first pressure plate, and the middle fixed plate and the second pressure plate respectively realize synchronous rotation through transmission sheets;

[0025] One end of the transmission plate is connected to the middle fixed plate, and a spring pad is provided at the connection between the transmission plate and the middle fixed plate;

[0026] The other end of the transmission plate is connected to the first pressure plate or the second pressure plate, and a spring pad is provided at the connection between the transmission plate and the first pressure plate, or at the connection between the transmission plate and the second pressure plate.

[0027] The hole wall of the first clutch flywheel disc is provided with a first clutch hydraulic oil inlet and outlet hole, a second clutch hydraulic oil inlet and outlet hole and a circulating oil inlet hole;

[0028] The first clutch flywheel disc and the intermediate fixed disc are both provided with interconnected hydraulic oil channels, and the first clutch hydraulic oil inlet and outlet holes and the second clutch hydraulic oil inlet and outlet holes are respectively connected to the hydraulic oil channels in the first clutch flywheel disc;

[0029] The first clutch flywheel disc and the middle fixed disc are both provided with circulating oil passages which are interconnected, and the circulating oil inlet hole is connected with the circulating oil passage in the first clutch flywheel disc.

[0030] A plurality of second clutch circulating oil ducts are arranged at intervals on the axial side of the intermediate fixed plate facing the second clutch flywheel plate. The second clutch circulating oil duct is connected to the circulating oil channel in the intermediate fixed plate. An oil outlet groove is arranged on the side of the second clutch circulating oil duct facing the oil-resistant friction part combination.

[0031] A first clutch circulating oil cover is fixed on the axial side of the first clutch flywheel disc facing the middle fixed disc, a first circulating oil inflow chamber is formed between the first clutch circulating oil cover and the first clutch flywheel disc, and the first circulating oil inflow chamber is connected to the circulating oil channel in the first clutch flywheel disc;

[0032] An oil groove is arranged on one side of the first clutch circulating oil cover facing the oil-resistant friction component assembly.

[0033] A shield is provided on the outer sides of the first clutch assembly and the second clutch;

[0034] The first clutch flywheel disc, the first clutch outer ring, the intermediate fixed disc, and the second clutch outer ring are all located in the shield, and the outer cylindrical end surface of the shield is fixedly connected to the second clutch flywheel disc;

[0035] There is a gap between the outer circumferential wall surfaces of the first clutch outer ring, the intermediate fixed plate, the second clutch outer ring and the adjacent inner wall surfaces of the shield, and a paddle inclined toward the first clutch flywheel plate is provided in the gap;

[0036] There is a gap between the axial side surface of the first clutch flywheel facing the shield and the adjacent axial side surface of the shield. A fixed oil guide wheel is arranged in the gap. The oil guide wheel is provided with oil guide vanes for guiding circulating oil along its circumferential direction.

[0037] The axial side of the first clutch flywheel disc facing away from the intermediate fixed disc is fixedly connected to the bearing sleeve;

[0038] When a shield is provided on the outer side of the first clutch assembly and the second clutch assembly, the bearing sleeve is arranged in the central hole of the shield, and the bearing sleeve is fixedly connected to the shield.

[0039] The second clutch flywheel disc in the present application can be powered by a spline connection or a flexible disc.

[0040] The beneficial effects of the present invention are:

[0041] The wet dual-clutch assembly described in the present application is suitable for manual and automatic transmissions of wide-body mining vehicles, engineering vehicles, and commercial trucks with high horsepower. It solves the problem of high-temperature ablation of the clutch, realizes a wear-free working mode of the clutch, greatly extends the service life of the clutch, and improves the working efficiency of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 is a schematic diagram of the first cross-sectional structure of the present invention in Example 1;

[0043] Figure 2 is a schematic diagram of a second cross-sectional structure of the present invention in Example 1;

[0044] Figure 3 is a schematic structural diagram of the hydraulic oil flow channels of the first clutch and the second clutch in Embodiment 1;

[0045] Figure 4is a schematic diagram of the cross-sectional structure of the present invention in Example 2;

[0046] Figure 5 It is a schematic diagram of the cross-sectional structure of the present invention in Example 3.

[0047] In the figure: 1 second clutch flywheel disc; 2 paper base plate; 3 steel plate; 4 second clutch outer ring; 5 second clutch pressure plate; 6 second oil cylinder piston; 7 middle fixed plate; 9 first O-ring; 10 first oil cylinder piston; 11 first clutch pressure plate; 12 first clutch outer ring; 13 second O-ring; 15 first clutch flywheel disc; 16 bearing sleeve; 17 first hexagon socket bolt; 20 first disc hub; 21 first disc hub outer teeth; 22 third O-ring; 23 first clutch circulating oil cover; 24 second hexagon socket bolt; 25 fourth O-ring; 26 release spring; 27 oil cylinder return spring; 28 third hexagon socket bolt; 29 first spring pad; 30 bolt seat; 31 transmission plate; 32 second clutch circulating oil fixed disc; 33 fourth hexagon socket bolt; 34 second disc hub outer teeth; 35 first rivet nail; 36 second disc hub; 37 first deep groove ball bearing; 38 second deep groove ball bearing; 39 fifth hexagon socket bolt; 40 sixth hexagon socket bolt; 41 first disc hub bearing pressure plate; 42 seventh hexagon socket bolt; 43 second rivet; 44 second clutch circulating oil guide tube; 45 nut; 46 second clutch hydraulic oil inlet and outlet holes; 47 first clutch hydraulic oil inlet and outlet holes; 49 circulating oil inlet and outlet holes; 50 plugging wire; 51 circulating oil channel; 52 first throttling plugging wire; 53 second throttling plugging wire; 54 eighth hexagon socket bolt; 55 ninth hexagon socket bolt; 56 guide belt; 57 second spring washer; 58 tenth hexagon socket bolt; 59 oil guide wheel; 60 shield; 61 fifth O-ring; 62 third rivet; 63 sixth O-ring; 64 third deep groove ball bearing; 65 eleventh hexagon socket bolt. DETAILED DESCRIPTION

[0048] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0049] In the following description, specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in a variety of other ways than those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0050] Example 1

[0051] like Figures 1 to 3As shown, the wet dual clutch assembly described in this embodiment includes a first clutch assembly and a second clutch assembly, and the first clutch assembly and the second clutch assembly are connected via an intermediate fixed plate 7. The first clutch assembly realizes power transmission with the gearbox or the moving parts via the first gearbox power input shaft, and the second clutch assembly realizes power transmission with the gearbox or the moving parts via the second gearbox power input shaft.

[0052] The first clutch assembly includes a first clutch flywheel disc 15, a first clutch outer ring 12 and a first oil cylinder piston 10. The outer cylindrical end surface of the first clutch flywheel disc 15 is fixedly connected to the first clutch outer ring 12. The hole wall of the first clutch flywheel disc 15 is provided with a plurality of oil inlet and outlet grooves.

[0053] The first clutch outer ring 12 is located between the first clutch flywheel disc 15 and the intermediate fixed disc 7. The axial outer side surface of the first clutch outer ring 12 is fixedly connected to the outer cylindrical end surface of the first clutch flywheel disc 15, and the corresponding axial inner side surface of the first clutch outer ring 12 is fixedly connected to the outer cylindrical end surface of the intermediate fixed disc 7. The first clutch flywheel disc 15, the first clutch outer ring 12 and the intermediate fixed disc 7 form a first sealed chamber, and the first cylinder piston 10 and the first oil-resistant friction member are combined and arranged in the first sealed chamber. A second O-ring 13 is provided at the contact surface between the first clutch outer ring 12 and the first clutch flywheel disc 15, and a first O-ring 9 is provided at the contact surface between the first clutch outer ring 12 and the intermediate fixed disc 7. The second O-ring 13 and the first O-ring 9 play a sealing role in the first sealed chamber.

[0054] In this embodiment, the axial side surface of the first clutch flywheel disc 15 facing away from the first clutch outer ring 12 is fixedly connected to the bearing sleeve 16 through the ninth hexagon socket bolt 55. The bearing sleeve 16 plays the role of driving the oil pump.

[0055] A first groove is provided at the axial side of the intermediate fixed plate 7 facing the first clutch flywheel plate 15, and the first oil cylinder piston 10 is movably arranged in the groove. A fourth O-ring 25 is provided between the outer side wall of the first oil cylinder piston 10 and the groove wall of the adjacent first groove. A third O-ring 22 and a guide belt 56 are provided between the inner side wall of the first oil cylinder piston 10 and the groove wall of the adjacent first groove. The third O-ring 22 and the fourth O-ring 25 play a sealing role in the sliding connection between the first oil cylinder piston 10 and the first groove. The guide belt 56 plays a guiding role in the reciprocating motion of the first oil cylinder piston 10 in the first groove.

[0056] The first oil-resistant friction member assembly is arranged between the first clutch pressure plate 11 and the first clutch flywheel plate 15 , and the first clutch pressure plate 11 is connected to the first clutch outer ring 12 via the cylinder return spring 27 . The first clutch pressure plate 11 is in contact with the first cylinder piston 10 .

[0057] The first oil-resistant friction component assembly includes a steel sheet and a paper-based sheet. The first oil-resistant friction component assembly includes a plurality of steel sheets and a plurality of paper-based sheets. The steel sheets and the paper-based sheets are arranged in a staggered interval. The paper-based sheets are arranged on one side or both sides of the steel sheets. Paper-based sheets are arranged between the first oil-resistant friction component assembly and the first clutch pressure plate 11, and between the first oil-resistant friction component assembly and the first clutch flywheel disc 15. The steel sheets and the paper-based sheets are arranged at intervals along the axial direction of the clutch assembly.

[0058] The outer edge of the steel sheet is provided with external teeth, and the steel sheet is connected to the first clutch outer ring 12 through its external teeth. The first clutch outer ring 12 can drive the steel sheet to rotate during rotation, and the steel sheet can also slide axially along the first clutch outer ring 12. A separation spring 26 is provided between the outer edges of two adjacent steel sheets. When the clutch is in a disengaged state, the separation spring 26 can ensure that the distance between the two adjacent steel sheets is the same, thereby preventing uneven spacing between the steel sheets.

[0059] The inner edge of the paper substrate is provided with inner teeth, and the paper substrate is connected to the first hub outer teeth 21 through its inner teeth. The first hub 20 is arranged in the center hole of the first hub outer teeth 21, and the first hub 20 is fixedly connected to the first hub outer teeth 21 through the second rivet 43. The first hub 20 is connected to the first gearbox power input shaft through a spline.

[0060] A first clutch circulating oil cover 23 is provided in the first sealed chamber. In this embodiment, both ends of the first clutch circulating oil cover 23 are fixedly connected to the first clutch flywheel disc 15 by means of a first hexagon socket bolt 17 and a second hexagon socket bolt 24, respectively. A first circulating oil inflow chamber is formed between the first clutch circulating oil cover 23 and the first clutch flywheel disc 15, and an oil groove is provided on the first clutch circulating oil cover 23. After the circulating oil enters the first circulating oil inflow chamber, it flows along the oil groove on the first clutch circulating oil cover 23 to the first oil-resistant friction component assembly, thereby cooling the first oil-resistant friction component assembly in operation.

[0061] A first deep groove ball bearing 37 is provided between the inner circular end surface of the intermediate fixed disk 7 and the first disk hub 20. The inner ring of the first deep groove ball bearing 37 is fixedly connected to the first disk hub 20 by a fifth inner hexagonal bolt 39, and the outer ring of the first deep groove ball bearing 37 is fixedly connected to the intermediate fixed disk 7 by a first disk hub bearing pressing plate 41 and a seventh inner hexagonal bolt 42. The first deep groove ball bearing 37 can not only realize the connection between the intermediate fixed disk 7 and the first disk hub 20, but also ensure the concentricity between the intermediate fixed disk 7 and the first disk hub 20.

[0062] The second clutch assembly includes a second clutch flywheel disc 1, a second clutch outer ring 4 and a second oil cylinder piston 6. In this embodiment, the second clutch flywheel disc 1 and the first clutch flywheel disc 15 are respectively located on the symmetrical sides of the intermediate fixed disc 7. The second clutch outer ring 4 is provided between the outer cylindrical end surface of the second clutch flywheel disc 1 and the intermediate fixed disc 7. The eighth hexagon socket bolt 54 passes through the second clutch flywheel disc 1, the second clutch outer ring 4, the intermediate fixed disc 7, the first clutch outer ring 12 and the first clutch flywheel disc 15 in sequence, thereby realizing the fixed connection between the second clutch flywheel disc 1, the second clutch outer ring 4, the intermediate fixed disc 7, the first clutch outer ring 12 and the first clutch flywheel disc 15.

[0063] In this embodiment, a spline shaft is fixed to the center of the axial side of the second clutch flywheel disc 1 away from the middle fixed disc, and the clutch assembly is connected to the shock absorber through the spline shaft. The power drive of the second clutch flywheel disc is realized through the spline connection.

[0064] The second clutch flywheel disc 1, the second clutch outer ring 4 and the intermediate fixed disc 7 form a second sealed chamber, and the second oil cylinder piston 6 and the second oil-resistant friction member are combined and arranged in the second sealed chamber.

[0065] A second groove is provided on the axial side of the middle fixed plate 7 facing the second clutch flywheel plate 1, and the second oil cylinder piston 6 is movably arranged in the second groove. The O-ring and guide belt arranged between the second oil cylinder piston and the inner wall of the second groove are the same as the O-ring and guide belt arranged between the first oil cylinder piston and the first groove, so they are not repeated here.

[0066] The second oil-resistant friction member assembly is arranged between the second clutch pressure plate 5 and the second clutch flywheel plate 1, and the second clutch pressure plate 5 is connected to the second clutch outer ring 4 through the cylinder return spring 27. The second clutch pressure plate 5 is in contact with the second cylinder piston 6.

[0067] The structure of the second oil-resistant friction component combination is exactly the same as that of the first oil-resistant friction component combination described above, so it will not be described again here.

[0068] The outer edge of the steel plate 3 of the second oil-resistant friction part combination is provided with external teeth, and the steel plate 3 is connected to the second clutch outer ring 4 through its external teeth. The steel plate 3 can be driven to rotate during the rotation of the first clutch outer ring 4, and the steel plate 3 can also slide axially along the second clutch outer ring 4.

[0069] The inner edge of the paper base sheet 2 of the second oil-resistant friction member assembly is provided with inner teeth, and the paper base sheet 2 is connected to the second hub outer teeth 34 through its inner teeth. The second hub 36 is arranged in the center hole of the second hub outer teeth 34. In this embodiment, the second hub 36 is connected to the second gearbox power input shaft through a spline, and the second hub 36 is fixedly connected to the second hub outer teeth 34 through a second rivet 35.

[0070] Several second clutch circulating oil conduits 44 are provided in the second sealed chamber, and the second clutch circulating oil conduits 44 are fixedly connected to the second clutch circulating oil fixed plate 32 through nuts 45. The second clutch circulating oil fixed plate 32 is fixedly connected to the intermediate fixed plate 7 through the fourth hexagon socket bolt 33. Several second clutch circulating oil conduits 44 are provided at intervals on the axial side surface of the intermediate fixed plate 7 toward the second clutch flywheel plate. An oil outlet groove is provided at the wall of the second clutch circulating oil conduit 44 facing the oil-resistant friction component combination. After the circulating oil flows into the second clutch circulating oil conduit 44, it flows to the second oil-resistant friction component combination through the oil outlet groove on the conduit, which has a cooling effect on the working second oil-resistant friction component combination.

[0071] A second deep groove ball bearing 38 is provided between the second clutch flywheel disc 1 and the second disc hub 36. The inner ring of the second deep groove ball bearing 38 is fixedly connected to the second disc hub 36, and the outer ring of the second deep groove ball bearing 38 is fixedly connected to the second clutch flywheel disc 1 through a sixth hexagon socket bolt 40. The concentricity between the second clutch flywheel disc 1 and the second disc hub 36 is ensured by the second deep groove ball bearing 38.

[0072] During the operation of the engine, the second clutch flywheel disc 1, the intermediate fixed disc 7 and the first clutch flywheel disc 15 are driven to rotate. During the rotation of the intermediate fixed disc 7, its torque is transmitted to the first clutch pressure disc 11 and the second clutch pressure disc 5 through the transmission plate 31.

[0073] like Figure 1 and Figure 2 As shown, a transmission plate 31 is provided between the intermediate fixed plate 7 and the first clutch pressure plate 11, and between the intermediate fixed plate 7 and the second clutch pressure plate 5. The transmission plate 31 located between the intermediate fixed plate 7 and the first clutch pressure plate 11 is connected to the intermediate fixed plate 7 at one end through the third hexagon socket bolt 28, and connected to the first clutch pressure plate 11 at the other end through the tenth hexagon socket bolt 58. A first spring washer 29 is provided between the third hexagon socket bolt 28 and its corresponding bolt seat 30. A second spring washer 57 is provided between the tenth hexagon socket bolt 58 and its corresponding bolt seat. During the rotation of the intermediate fixed plate 7, the torque is transmitted to the first clutch pressure plate 11 through the transmission plate 31, driving the first clutch pressure plate 11 to rotate accordingly.

[0074] The connection relationship between the transmission plate between the intermediate fixed plate 7 and the second clutch pressure plate 5 is exactly the same as the connection relationship between the transmission plate between the intermediate fixed plate 7 and the first clutch pressure plate 11, so it will not be repeated here.

[0075] like Figure 3 As shown, the hole wall of the first clutch flywheel disc 15 is provided with a first clutch hydraulic oil inlet and outlet hole 47, a second clutch hydraulic oil inlet and outlet hole 46 and a circulating oil inlet hole 49. The first clutch flywheel disc 15 and the intermediate fixed disc 7 are both provided with hydraulic oil channels. The hydraulic oil enters the hydraulic oil channel in the first clutch flywheel disc 15 through the first clutch hydraulic oil inlet and outlet hole 47, and flows along the hydraulic oil channel in the intermediate fixed disc 7 to the first oil cylinder piston 10, which has a pushing effect on the first oil cylinder piston 10. The first oil cylinder piston 10 has a squeezing effect on the first oil-resistant friction component combination, so that the first clutch assembly is in an engaged state. When the first clutch assembly is in a disengaged state, the first oil cylinder piston 10 is reset under the reset action of the disengagement spring 26 and the oil cylinder return spring 27. At this time, the hydraulic oil flows out along the hydraulic oil channel in the intermediate fixed disc 7, the hydraulic oil channel in the first clutch flywheel disc 15, and the first clutch hydraulic oil inlet and outlet hole 47.

[0076] The hydraulic oil inlet and outlet holes 46 of the second clutch are connected to the hydraulic oil passages in the first clutch flywheel disc 15, and the hydraulic oil passages are connected to each other. The hydraulic oil passages in the intermediate fixed disc 7 are connected to the second groove in which the second oil cylinder piston 6 is placed. The hydraulic oil flows through the hydraulic oil inlet and outlet holes 46 of the second clutch, the hydraulic oil passages in the first clutch flywheel disc 15, and the hydraulic oil passages in the intermediate fixed disc 7, thereby realizing the separation and engagement of the second clutch assembly. The separation and engagement process is the same as the working process of the first clutch assembly, so it will not be repeated here.

[0077] The first clutch flywheel disc 15 and the intermediate fixed disc 7 are also provided with circulating oil channels, and the circulating oil channels are interconnected. The circulating oil channel in the first clutch flywheel disc 15 is connected to the circulating oil inlet hole 49 on the first clutch flywheel disc 15. The circulating oil channel in the intermediate fixed disc 7 is connected to the second clutch circulating oil conduit 44, and a second throttling plug 53 is provided at the connection point, and the flow rate of the circulating oil is controlled by the second throttling plug. The circulating oil channel in the first clutch flywheel disc 15 is connected to the first circulating oil inflow chamber, and a first throttling plug 52 is provided at the connection point, and the first throttling plug 52 has a certain blocking effect on the flow of the circulating oil. A plug 50 is provided in the circulating oil inlet hole 49.

[0078] The circulating oil enters the first sealed chamber of the first clutch assembly and the second sealed chamber of the second clutch assembly in sequence through the circulating oil inlet hole 49, the circulating oil channel in the first clutch flywheel disc 15, the circulating oil channel in the intermediate fixed disc 7, and enters the first oil-resistant friction part combination and the second oil-resistant friction part combination, so that oily friction is formed between the paper substrate 2 and the steel sheet 3, and at the same time, the temperature generated by the friction between the paper substrate 2 and the steel sheet 3 can be reduced.

[0079] In this embodiment, the specific working process is introduced by taking the first clutch assembly as an example. When the first clutch assembly is in the engaged state, the hydraulic oil with oil pressure flows into the first cylinder piston 10 through the first clutch hydraulic oil inlet and outlet holes 47. Through the pressure of the hydraulic oil, the first cylinder piston 10 presses the first clutch pressure plate 11 toward the first clutch flywheel disc, and the engine torque is transmitted to the first oil-resistant friction component combination through the first clutch flywheel disc 15 and the first clutch pressure plate 11, and is transmitted to the first gearbox power input shaft through the first disc hub. During the mutual pressing process, the cylinder return spring 27 between the first clutch pressure plate 11 and the first clutch outer ring 12, and the separation spring 26 between the two adjacent steel sheets are compressed, and thrust is generated in the spring.

[0080] When the first clutch assembly is in the disengaged state, the clutch pedal is depressed, the oil pressure of the hydraulic oil provided to the first cylinder piston 10 is removed, the cylinder return spring 27 and the release spring 26 are reset, and under the return force of the cylinder return spring 27 and the release spring 26, the first cylinder piston 10 moves in the opposite direction away from the first clutch flywheel disc, and a gap is generated between the first clutch pressure plate 11, the first oil-resistant friction part combination and the first clutch flywheel disc 15, the friction torque acting on the first oil-resistant friction part combination disappears, and the resistance transmission is interrupted.

[0081] When the second clutch assembly is in the engaged state, it drives the second gearbox power input shaft to rotate. The working principle of the second clutch assembly is exactly the same as that of the first clutch assembly, so it will not be repeated here.

[0082] In this embodiment, the first clutch assembly and the second clutch assembly are separated and engaged alternately, that is, when the first clutch assembly is in a separated state, the second clutch assembly is in an engaged state; when the second clutch assembly is in an engaged state, the second clutch assembly is in a separated state, thereby achieving uninterrupted power of the automatic transmission vehicle. In addition, since the present application includes two clutch assemblies, one of the clutch assemblies can also be used to achieve walking drive, while the other clutch assembly can be used to drive the action component to complete other actions.

[0083] In this embodiment, the first oil cylinder piston and the second oil cylinder piston are located between the two oil-resistant friction member combinations. In fact, the positions of the first oil cylinder piston and the second oil cylinder piston are not limited to the range defined in this embodiment.

[0084] In the present application, two oil-resistant friction parts can be arranged between the first oil cylinder piston and the second oil cylinder piston, at which time the first oil cylinder piston is located in the groove of the first clutch flywheel disc, and the first oil-resistant friction part combination is located between the first oil cylinder piston and the middle fixed disc. The second oil cylinder piston is located in the groove of the second clutch flywheel disc, and the second oil-resistant friction part combination is located between the second oil cylinder piston and the middle fixed disc.

[0085] In addition, when the first oil-resistant friction part combination is located between the first clutch flywheel disc and the first pressure plate, the second oil-resistant friction part combination can be located between the second pressure plate and the intermediate fixed plate. At this time, the first cylinder piston is located in the groove on the axial side of the intermediate fixed plate facing the first clutch flywheel disc, and the second cylinder piston is located in the groove on the axial side of the second clutch flywheel disc facing the intermediate fixed plate.

[0086] When the first oil-resistant friction part combination is located between the intermediate fixed plate and the first pressure plate, the second oil-resistant friction part combination can be located between the second pressure plate and the second clutch flywheel plate. At this time, the first cylinder piston is located in the groove on the axial side of the first clutch flywheel plate facing the intermediate fixed plate, and the second cylinder piston is located in the groove on the axial side of the intermediate fixed plate facing the second clutch flywheel plate.

[0087] In the present application, the first cylinder piston can also be located in the first sealed chamber, the first cylinder piston is connected to the first connecting plate, the first connecting plate is located on the left or right side of the first oil-resistant friction component combination, and the first clutch assembly is separated or engaged during the reciprocating motion of the first connecting plate driven by the first cylinder piston. When the first connecting plate is located on the left side of the first oil-resistant friction component combination, the first oil-resistant friction component is located between the first pressure plate connected to the first connecting plate and the first clutch flywheel plate. When the first connecting plate is located on the right side of the first oil-resistant friction component combination, the first oil-resistant friction component is located between the first pressure plate connected to the first connecting plate and the intermediate fixed plate.

[0088] Similarly, the second oil cylinder piston can also be located in the second sealed chamber. The second oil cylinder piston is connected to the second connecting plate. The second connecting plate is located on the left or right side of the second oil-resistant friction component combination. In the process of the second oil cylinder piston driving the second connecting plate to move back and forth, the second clutch assembly is separated or engaged. When the second connecting plate is located on the left side of the second oil-resistant friction component combination, the second oil-resistant friction component is located between the second pressure plate connected to the second connecting plate and the second clutch flywheel plate. When the second connecting plate is located on the right side of the second oil-resistant friction component combination, the second oil-resistant friction component is located between the second pressure plate connected to the second connecting plate and the middle fixed plate.

[0089] Example 2

[0090] Different from Example 1, Figure 4 As shown, the wet dual clutch assembly in this embodiment further includes a shield 60, which is located outside the first clutch flywheel disc 15, the first clutch outer ring 12, the middle fixed disc 7, and the second clutch outer ring 4. Figure 4 As shown, the outer cylindrical end surface of the shield 60 is fixedly connected to the second clutch flywheel disc 1 through several eleventh hexagon socket bolts 65, the center of the shield 60 is fixedly connected to the bearing sleeve 16 through a third rivet 62, and a fifth O-ring 61 and a sixth O-ring 63 are provided at the connection between the shield 60 and the bearing sleeve 22.

[0091] The first clutch flywheel disc 15 , the first clutch outer ring 12 , the intermediate fixed disc 7 , and the second clutch outer ring 4 are arranged in a chamber formed by the protective cover 60 , the second clutch flywheel disc 1 , and the bearing sleeve 16 .

[0092] There is a gap between the outer circumferential wall of the first clutch outer ring 12, the intermediate fixed plate 7, the second clutch outer ring 4 and the inner side of the corresponding shield 60. A paddle is provided in the gap, and the paddle is tilted in the direction toward the first clutch flywheel. During the rotation of the entire clutch assembly, the circulating oil in the first oil-resistant friction component combination and the second oil-resistant friction component combination is continuously thrown into the gap between the first clutch outer ring, the second clutch outer ring and the shield, and flows along the paddle to one end close to the first clutch flywheel.

[0093] There is also a gap between the axial side of the first clutch flywheel disc 15 facing the shield and the corresponding axial side of the shield, and an oil guide wheel 59 is arranged in the gap. The position of the oil guide wheel 59 is always fixed and does not rotate with the first clutch flywheel disc. A third deep groove ball bearing 64 is arranged between the oil guide wheel 59 and the first clutch flywheel disc 15, and the concentricity and parallelism between the oil guide wheel 59 and the first clutch flywheel disc 15 are ensured by the third deep groove ball bearing 64.

[0094] The oil guide wheel 59 is provided with several oil guide blades arranged along the circumferential direction. The circulating oil collected by the paddles drips onto the guide wheel 59 and is discharged along the oil guide blades. After the discharged circulating oil is collected, it can be circulated again into the clutch assembly for cooling, thereby realizing the recycling of the circulating oil.

[0095] A paddle is also provided at the wall of the bearing sleeve hole near the outlet of the oil guide wheel, which helps to guide the circulating oil in the oil guide wheel. Therefore, in this embodiment, the bearing sleeve can not only drive the oil pump, but also play an oil guiding role.

[0096] The rest is the same as in Example 1.

[0097] Example 3

[0098] Different from the second embodiment, in this embodiment, the second clutch flywheel disc 1 is driven to rotate by a flexible disc, such as Figure 5 The flexible disk is fixedly connected to the second clutch flywheel disk 1 by bolts, and the second clutch flywheel disk 1 is driven to rotate by the rigid connection between the flexible disk and the second clutch flywheel disk 1 during the rotation of the flexible disk.

[0099] The rest is the same as Example 2.

[0100] In the above-mentioned embodiment 1, the spline connection driving method can also be replaced by the driving method of a floppy disk.

[0101] The wet dual clutch assembly provided by the present invention is described in detail above. The principles and implementation methods of the present invention are described herein using specific examples. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. It should be noted that for ordinary technicians in the technical field, without departing from the principles of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention. The above description of the disclosed embodiments enables professionals in the field to implement or use the present invention. Various modifications to these embodiments will be obvious to professionals in the field, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A wet dual clutch assembly, characterized in that: The invention comprises a first clutch assembly and a second clutch assembly. The first clutch assembly and the second clutch assembly respectively comprise an oil-resistant friction component assembly. The oil-resistant friction component assembly comprises a plurality of paper substrates and steel sheets arranged at staggered intervals. The paper substrates and the steel sheets are arranged along the axial direction of the wet dual clutch assembly.

2. The wet dual clutch assembly according to claim 1, characterized in that: The first clutch assembly and the second clutch assembly are fixedly connected via an intermediate fixed plate.

3. The wet dual clutch assembly according to claim 2, characterized in that: The first clutch assembly includes: The first clutch flywheel disc has a plurality of oil inlet and outlet holes on its hole wall, and its outer circular end portion is fixedly connected to the outer ring of the first clutch; The first clutch outer ring is located between the first clutch flywheel disc and the intermediate fixed disc, and is fixedly connected to the first clutch flywheel disc and the intermediate fixed disc, and is connected to the outer teeth of the oil-resistant friction member assembly; A first oil cylinder piston, a first clutch flywheel disc, a first clutch outer ring and an intermediate fixed disc form a first sealed chamber, the first oil cylinder piston and an oil-resistant friction member combination are arranged in the first sealed chamber, the first oil cylinder piston contacts the oil-resistant friction member combination through a first pressure plate, and an oil cylinder return spring is connected between the first pressure plate and the first clutch outer ring; The first hub has outer teeth, and the first hub is fixed in the center hole thereof. The outer teeth of the first hub are connected to the inner teeth of the oil-resistant friction component combination, and the first hub is connected to the power input shaft of the first gearbox.

4. The wet dual clutch assembly according to claim 3, characterized in that: The second clutch assembly includes: A second clutch flywheel disc, the outer circumferential end of which is fixedly connected to the outer ring of the second clutch; The second clutch outer ring is located between the second clutch flywheel disc and the middle fixed disc, and is fixedly connected to the second clutch flywheel disc and the middle fixed disc, and is connected to the outer teeth of the oil-resistant friction member assembly; A second cylinder piston, a second clutch flywheel disc, a second clutch outer ring and an intermediate fixed disc form a second sealed chamber, the second cylinder piston and an oil-resistant friction member combination are arranged in the second sealed chamber, the second cylinder piston contacts the oil-resistant friction member combination through a second pressure plate, and a cylinder return spring is connected between the second pressure plate and the second clutch outer ring; The second hub has outer teeth, and the second hub is fixed in the center hole. The outer teeth of the second hub are connected with the inner teeth of the oil-resistant friction component combination, and the second hub is connected with the power input shaft of the second gearbox.

5. The wet dual clutch assembly according to claim 4, characterized in that: The oil-resistant friction component assembly also includes a release spring; The outer edge of the steel sheet is connected to the first clutch outer ring and the second clutch outer ring by teeth, a separation spring is arranged between the outer edges of adjacent steel sheets, and the inner edge of the paper base sheet is connected to the outer teeth of the first disc hub and the second disc hub by teeth.

6. The wet dual clutch assembly according to claim 5, characterized in that: The first oil cylinder piston and the second oil cylinder piston are located between the two oil-resistant friction component assemblies; At this time, the oil-resistant friction component combination in the first clutch assembly is located between the first clutch flywheel disc and the first pressure plate, and the oil-resistant friction component combination in the second clutch assembly is located between the second clutch flywheel disc and the second pressure plate.

7. The wet dual clutch assembly according to claim 5, characterized in that: The two oil-resistant friction parts are combined and located between the first oil cylinder piston and the second oil cylinder piston; At this time, the oil-resistant friction component combination in the first clutch assembly is located between the intermediate fixed plate and the first pressure plate, and the oil-resistant friction component combination in the second clutch assembly is located between the intermediate fixed plate and the second pressure plate.

8. The wet dual clutch assembly according to claim 5, characterized in that: The oil-resistant friction component combination in the first clutch assembly is located between the intermediate fixed plate and the first pressure plate, while the oil-resistant friction component combination in the second clutch assembly is located between the second pressure plate and the second clutch flywheel plate; Alternatively, the oil-resistant friction component combination in the first clutch assembly is located between the first pressure plate and the first clutch flywheel plate, and the oil-resistant friction component combination in the second clutch assembly is located between the second pressure plate and the intermediate fixed plate.

9. The wet dual clutch assembly according to claim 5, characterized in that: The middle fixed plate and the first pressure plate, and the middle fixed plate and the second pressure plate respectively realize synchronous rotation through transmission sheets; One end of the transmission plate is connected to the middle fixed plate, and a spring pad is provided at the connection between the transmission plate and the middle fixed plate; The other end of the transmission plate is connected to the first pressure plate or the second pressure plate, and a spring pad is provided at the connection between the transmission plate and the first pressure plate, or at the connection between the transmission plate and the second pressure plate.

10. The wet dual clutch assembly according to claim 5, characterized in that: The hole wall of the first clutch flywheel disc is provided with a first clutch hydraulic oil inlet and outlet hole, a second clutch hydraulic oil inlet and outlet hole and a circulating oil inlet hole; The first clutch flywheel disc and the intermediate fixed disc are both provided with interconnected hydraulic oil channels, and the first clutch hydraulic oil inlet and outlet holes and the second clutch hydraulic oil inlet and outlet holes are respectively connected to the hydraulic oil channels in the first clutch flywheel disc; The first clutch flywheel disc and the middle fixed disc are both provided with circulating oil passages which are interconnected, and the circulating oil inlet hole is connected with the circulating oil passage in the first clutch flywheel disc.

11. The wet dual clutch assembly according to claim 10, characterized in that: A plurality of second clutch circulating oil ducts are arranged at intervals on the axial side of the intermediate fixed plate facing the second clutch flywheel plate. The second clutch circulating oil duct is connected to the circulating oil channel in the intermediate fixed plate. An oil outlet groove is arranged on the side of the second clutch circulating oil duct facing the oil-resistant friction part combination.

12. The wet dual clutch assembly according to claim 10, characterized in that: A first clutch circulating oil cover is fixed on the axial side of the first clutch flywheel disc facing the middle fixed disc, a first circulating oil inflow chamber is formed between the first clutch circulating oil cover and the first clutch flywheel disc, and the first circulating oil inflow chamber is connected to the circulating oil channel in the first clutch flywheel disc; An oil groove is arranged on one side of the first clutch circulating oil cover facing the oil-resistant friction component assembly.

13. The wet dual clutch assembly according to claim 4, characterized in that: A shield is provided on the outer sides of the first clutch assembly and the second clutch; The first clutch flywheel disc, the first clutch outer ring, the intermediate fixed disc, and the second clutch outer ring are all located in the shield, and the outer cylindrical end surface of the shield is fixedly connected to the second clutch flywheel disc; There is a gap between the outer circumferential wall surfaces of the first clutch outer ring, the intermediate fixed plate, the second clutch outer ring and the adjacent inner wall surfaces of the shield, and a paddle inclined toward the first clutch flywheel plate is provided in the gap; There is a gap between the axial side surface of the first clutch flywheel facing the shield and the adjacent axial side surface of the shield. A fixed oil guide wheel is arranged in the gap. The oil guide wheel is provided with oil guide vanes for guiding circulating oil along its circumferential direction.

14. The wet dual clutch assembly according to claim 4 or 13, characterized in that: The axial side of the first clutch flywheel disc facing away from the intermediate fixed disc is fixedly connected to the bearing sleeve; When a shield is provided on the outer side of the first clutch assembly and the second clutch assembly, the bearing sleeve is arranged in the central hole of the shield, and the bearing sleeve is fixedly connected to the shield.

15. The wet clutch assembly according to claim 4, characterized in that: The second clutch flywheel disc is driven by a spline connection, or is powered by a flexible disc.

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