Wet-type double clutch assembly

Abstract

The utility model relates to a clutch with multiple layers of laminated sheets, in particular to a wet-type double-clutch assembly. Comprising a first clutch and a second clutch, the first clutch and the second clutch 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 utility model relates to a clutch with multiple laminated sheets, especially a wet dual clutch assembly. Background Art

[0002] At present, the existing dry clutch includes a clutch cover assembly and a clutch driven disc assembly. A dry friction plate is provided on the clutch driven disc assembly. During actual operation, friction occurs between the friction plate and the clutch cover assembly. Especially when used in vehicles with extremely harsh working conditions or when the friction plate and the cover assembly are in a semi - engaged 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 above 350°C will be generated instantaneously. At present, the temperature critical value of the commonly used dry friction plate is about 350°C. Therefore, it is very easy to burn the plate. In addition, the friction between the friction plate and the clutch cover assembly at high temperature will cause the wear of the friction plate to accelerate. Therefore, when the clutch with the existing structure is used in vehicles with extremely harsh working conditions or when the friction plate and the cover assembly are in a semi - engaged state for a long time, once it is ablated, 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 use cost of the vehicle.

[0003] Especially for the manual and automatic transmissions of mine wide - body trucks, engineering vehicles, and commercial trucks with a large load capacity, which have large horsepower, long continuous working hours, and harsh working environments, the scrap rate of their clutches is even higher. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the above - mentioned defects existing in the prior art and propose a wet dual clutch assembly, which can extend the service life of the clutch used in large - horsepower vehicles.

[0005] The technical solution of the utility model is: a wet dual clutch assembly, which includes a first clutch and a second clutch. The first clutch and the second clutch respectively include an oil - resistant friction member combination. The oil - resistant friction member combination includes several paper base sheets and steel sheets arranged at intervals in an alternating manner, and the paper base sheets and the steel sheets are arranged along the axial direction of the wet dual clutch assembly.

[0006] In the utility model, the first clutch and the second clutch are fixedly connected through an intermediate fixing plate.

[0007] The first clutch includes:

[0008] A first clutch flywheel disc, on the inner wall of whose hole there are several oil inlet and outlet holes, and the outer - circle end of which is fixedly connected to the outer ring of the first clutch;

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

[0010] A first oil cylinder piston, a first clutch flywheel disc, a first clutch outer ring and an intermediate fixing disc form a first sealing chamber. The first oil cylinder piston and an oil-resistant friction member assembly are disposed in the first sealing chamber. The first oil cylinder piston contacts the oil-resistant friction member assembly through a first pressure plate. An oil cylinder return spring is connected between the first pressure plate and the first clutch outer ring;

[0011] External teeth of a first disc hub, a first disc hub is fixed in a central hole thereof. The external teeth of the first disc hub are connected to internal teeth of the oil-resistant friction member assembly. The first disc hub is connected to a power input shaft of a first transmission.

[0012] The second clutch includes:

[0013] A second clutch flywheel disc, an outer circumferential end portion thereof is fixedly connected to a second clutch outer ring;

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

[0015] A second oil cylinder piston, a second clutch flywheel disc, a second clutch outer ring and an intermediate fixing disc form a second sealing chamber. The second oil cylinder piston and an oil-resistant friction member assembly are disposed in the second sealing chamber. The second oil cylinder piston contacts the oil-resistant friction member assembly through a second pressure plate. An oil cylinder return spring is connected between the second pressure plate and the second clutch outer ring;

[0016] External teeth of a second disc hub, a second disc hub is fixed in a central hole thereof. The external teeth of the second disc hub are connected to internal teeth of the oil-resistant friction member assembly. The second disc hub is connected to a power input shaft of a second transmission.

[0017] The oil-resistant friction member assembly further includes a separating spring;

[0018] Outer edges of the steel sheets are in tooth connection with both the first clutch outer ring and the second clutch outer ring. A separating spring is provided between outer edges of adjacent steel sheets. Inner edges of the paper base sheets are in tooth connection with both the external teeth of the first disc hub and the external teeth of the second disc hub.

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

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

[0021] The combination of the two oil-resistant friction members may also be located between the first oil cylinder piston and the second oil cylinder piston; at this time, the combination of oil-resistant friction members in the first clutch is located between the intermediate fixed disk and the first pressure plate, and the combination of oil-resistant friction members in the second clutch is located between the intermediate fixed disk and the second pressure plate.

[0022] The combination of oil-resistant friction members in the first clutch is located between the intermediate fixed disk and the first pressure plate. At this time, the combination of oil-resistant friction members in the second clutch is located between the second pressure plate and the flywheel disk of the second clutch.

[0023] Or, the combination of oil-resistant friction members in the first clutch is located between the first pressure plate and the flywheel disk of the first clutch. At this time, the combination of oil-resistant friction members in the second clutch is located between the second pressure plate and the intermediate fixed disk.

[0024] Synchronous rotation is achieved between the intermediate fixed disk and the first pressure plate, and between the intermediate fixed disk and the second pressure plate respectively through transmission plates.

[0025] One end of the transmission plate is connected to the intermediate fixed disk, and a spring washer is provided at the connection between the transmission plate and the intermediate fixed disk.

[0026] The other end of the transmission plate is connected to the first pressure plate or the second pressure plate, and a spring washer 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] At the hole wall of the flywheel disk of the first clutch, there are an oil inlet / outlet hole for the hydraulic oil of the first clutch, an oil inlet / outlet hole for the hydraulic oil of the second clutch, and a circulating oil inlet hole.

[0028] In both the flywheel disk of the first clutch and the intermediate fixed disk, there are interconnected hydraulic oil channels. The oil inlet / outlet hole for the hydraulic oil of the first clutch and the oil inlet / outlet hole for the hydraulic oil of the second clutch are respectively connected to the hydraulic oil channels in the flywheel disk of the first clutch.

[0029] In both the flywheel disk of the first clutch and the intermediate fixed disk, there are interconnected circulating oil channels. The circulating oil inlet hole is connected to the circulating oil channels in the flywheel disk of the first clutch.

[0030] On the axial side of the intermediate fixed disk facing the flywheel disk of the second clutch, several second clutch circulating oil conduits are provided at intervals. The second clutch circulating oil conduits are connected to the circulating oil channels in the intermediate fixed disk, and an oil outlet groove is provided on the side of the second clutch circulating oil conduits facing the combination of oil-resistant friction members.

[0031] On the axial side of the flywheel disk of the first clutch facing the intermediate fixed disk, a first clutch circulating oil cover is fixed. A first circulating oil inflow chamber is formed between the first clutch circulating oil cover and the flywheel disk of the first clutch, and the first circulating oil inflow chamber is connected to the circulating oil channels in the flywheel disk of the first clutch.

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

[0033] The first clutch and the second clutch are provided with shields on the outside;

[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 sides of the first clutch and the second clutch, 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 utility model 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 It is a schematic diagram of the first cross-sectional structure of the utility model in Example 1;

[0043] Figure 2 It is a schematic diagram of the second cross-sectional structure of the utility model in embodiment 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 4 It is a schematic cross-sectional structure diagram of the utility model in Example 2;

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

[0047] In the figure: 1 Second clutch flywheel disc; 2 Paper base sheet; 3 Steel sheet; 4 Second clutch outer ring; 5 Second clutch pressure plate; 6 Second oil cylinder piston; 7 Intermediate fixing 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 head cap screw; 20 First hub; 21 External teeth of the first hub; 22 Third O-ring; 23 First clutch circulating oil cover; 24 Second hexagon socket head cap screw; 25 Fourth O-ring; 26 Separation spring; 27 Oil cylinder return spring; 28 Third hexagon socket head cap screw; 29 First spring washer; 30 Bolt seat; 31 Driving plate; 32 Second clutch circulating oil fixing plate; 33 Fourth hexagon socket head cap screw; 34 External teeth of the second hub; 35 First rivet; 36 Second hub; 37 First deep groove ball bearing; 38 Second deep groove ball bearing; 39 Fifth hexagon socket head cap screw; 40 Sixth hexagon socket head cap screw; 41 First hub bearing pressing piece; 42 Seventh hexagon socket head cap screw; 43 Second rivet; 44 Second clutch circulating oil conduit; 45 Nut; 46 Second clutch hydraulic oil inlet and outlet hole; 47 First clutch hydraulic oil inlet and outlet hole; 49 Circulating oil inlet and outlet hole; 50 Plug screw; 51 Circulating oil passage; 52 First throttle plug screw; 53 Second throttle plug screw; 54 Eighth hexagon socket head cap screw; 55 Ninth hexagon socket head cap screw; 56 Guide strip; 57 Second spring washer; 58 Tenth hexagon socket head cap screw; 59 Oil guide wheel; 60 Protective cover; 61 Fifth O-ring; 62 Third rivet; 63 Sixth O-ring; 64 Third deep groove ball bearing; 65 Eleventh hexagon socket head cap screw. Detailed implementation manners

[0048] In order to make the above objects, features and advantages of the present utility model more obvious and understandable, the following detailed description of the specific implementation manners of the present utility model will be given with reference to the accompanying drawings.

[0049] In the following description, specific details are set forth in order to provide a thorough understanding of the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific implementation manners disclosed below.

[0050] Embodiment 1

[0051] As Figures 1 to 3As shown, in this embodiment, the wet dual clutch assembly includes a first clutch and a second clutch, and the first clutch and the second clutch are connected by an intermediate fixing plate 7. The first clutch realizes power transmission between the transmission or the actuating component through the first transmission power input shaft, and the second clutch realizes power transmission between the transmission or the actuating component through the second transmission power input shaft.

[0052] The first clutch includes a first clutch flywheel disc 15, a first clutch outer ring 12, and a first oil cylinder piston 10. The outer circumferential end face of the first clutch flywheel disc 15 is fixedly connected to the first clutch outer ring 12, and several oil inlet and outlet grooves are provided on the hole wall of the first clutch flywheel disc 15.

[0053] The first clutch outer ring 12 is located between the first clutch flywheel disc 15 and the intermediate fixing plate 7. The axial outer side face of the first clutch outer ring 12 is fixedly connected to the outer circumferential end face of the first clutch flywheel disc 15, and correspondingly, the axial inner side face of the first clutch outer ring 12 is fixedly connected to the outer circumferential end face of the intermediate fixing plate 7. The first clutch flywheel disc 15, the first clutch outer ring 12, and the intermediate fixing plate 7 form a first sealing chamber, and the first oil cylinder piston 10 and the first oil-resistant friction member combination are arranged in the first sealing 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 fixing plate 7. The second O-ring 13 and the first O-ring 9 play a sealing role for the first sealing chamber.

[0054] In this embodiment, the axial side face of the first clutch flywheel disc 15 facing away from the first clutch outer ring 12 is fixedly connected to the bearing sleeve 16 by a ninth internal hexagonal bolt 55. The bearing sleeve 16 plays a role in driving the oil pump.

[0055] A first groove is provided on the axial side face of the intermediate fixing plate 7 facing the first clutch flywheel disc 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. Among them, the third O-ring 22 and the fourth O-ring 25 play a sealing role for the sliding connection between the first oil cylinder piston 10 and the first groove. The guide belt 56 plays a guiding role for the reciprocating movement of the first oil cylinder piston 10 in the first groove.

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

[0057] The first oil-resistant friction part combination includes steel sheets and paper-based sheets. The first oil-resistant friction part combination includes several steel sheets and several paper-based sheets, and the steel sheets and the paper-based sheets are arranged at staggered intervals, with paper-based sheets provided on one or both sides of the steel sheets. Paper-based sheets are provided between the first oil-resistant friction part combination and the first clutch pressure plate 11, and between the first oil-resistant friction part combination and the first clutch flywheel 15. The steel sheets and the paper-based sheets are both arranged at axial intervals along the clutch assembly.

[0058] External teeth are provided at the outer edge of the steel sheet. The steel sheet is connected to the first clutch outer ring 12 through its external teeth. During the rotation of the first clutch outer ring 12, the steel sheet can be driven to rotate, and at the same time, the steel sheet can also slide axially along the first clutch outer ring 12. Separation springs 26 are provided between the outer edges of adjacent two steel sheets. When the clutch is in the separated state, the separation springs 26 can ensure that the distance between adjacent two steel sheets is the same, preventing the uneven spacing between the steel sheets.

[0059] Internal teeth are provided at the inner edge of the paper-based sheet. The paper-based sheet is connected to the first hub outer teeth 21 through its internal teeth. The first hub 20 is arranged in the central 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 transmission power input shaft through a spline.

[0060] A first clutch circulating oil cover 23 is provided in the first sealing chamber. In this embodiment, both ends of the first clutch circulating oil cover 23 are fixedly connected to the first clutch flywheel 15 through the first hexagon socket head cap screw 17 and the second hexagon socket head cap screw 24 respectively. A first circulating oil inflow chamber is formed between the first clutch circulating oil cover 23 and the first clutch flywheel 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 part combination, playing a cooling role for the working first oil-resistant friction part combination.

[0061] A first deep groove ball bearing 37 is provided between the inner circular end face of the intermediate fixed disk 7 and the first hub 20. The inner ring of the first deep groove ball bearing 37 is fixedly connected to the first hub 20 through the fifth hexagon socket head cap screw 39, and the outer ring of the first deep groove ball bearing 37 is fixedly connected to the intermediate fixed disk 7 through the first hub bearing pressing piece 41 and the seventh hexagon socket head cap screw 42. Through the first deep groove ball bearing 37, the connection between the intermediate fixed disk 7 and the first hub 20 can be realized, and the concentricity between the intermediate fixed disk 7 and the first hub 20 is also ensured.

[0062] The second clutch 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 symmetric two sides of the intermediate fixed disc 7. A second clutch outer ring 4 is provided between the outer circumferential end face of the second clutch flywheel disc 1 and the intermediate fixed disc 7. The eighth inner hexagon bolt 54 sequentially 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, thereby realizing the fixed connection among 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 fixedly provided at the center of the axial side of the second clutch flywheel disc 1 facing away from the intermediate fixed disc, and the connection between the clutch assembly and the shock absorber is realized through the spline shaft. Through the spline connection, the power drive of the second clutch flywheel disc is realized.

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

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

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

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

[0068] External teeth are provided at the outer edge of the steel sheet 3 of the second oil-resistant friction part combination, and the steel sheet 3 realizes the connection with the second clutch outer ring 4 through its external teeth. During the rotation of the first clutch outer ring 4, the steel sheet 3 can be driven to rotate, and at the same time, the steel sheet 3 can also axially slide along the second clutch outer ring 4.

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

[0070] A plurality of second clutch circulating oil conduits 44 are arranged in the second sealing chamber. The second clutch circulating oil conduits 44 are fixedly connected to the second clutch circulating oil fixed disk 32 through nuts 45. The second clutch circulating oil fixed disk 32 is fixedly connected to the intermediate fixed disk 7 through fourth hexagon socket head cap screws 33. A plurality of second clutch circulating oil conduits 44 are arranged at intervals on the axial side surface of the intermediate fixed disk 7 facing the second clutch flywheel disk. An oil outlet groove is arranged at the pipe wall of the second clutch circulating oil conduit 44 facing the oil-resistant friction member assembly. After the circulating oil flows into the second clutch circulating oil conduit 44, it flows to the second oil-resistant friction member assembly through the oil outlet groove on the conduit, playing a cooling role for the working second oil-resistant friction member assembly.

[0071] A second deep groove ball bearing 38 is arranged between the second clutch flywheel disk 1 and the second disk hub 36. The inner ring of the second deep groove ball bearing 38 is fixedly connected to the second disk hub 36, and the outer ring of the second deep groove ball bearing 38 is fixedly connected to the second clutch flywheel disk 1 through a sixth hexagon socket head cap screw 40. Through the second deep groove ball bearing 38, the concentricity between the second clutch flywheel disk 1 and the second disk hub 36 is ensured.

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

[0073] As Figure 1 and Figure 2 shown, transmission plates 31 are arranged between the intermediate fixed disk 7 and the first clutch pressure plate 11, and between the intermediate fixed disk 7 and the second clutch pressure plate 5. One end of the transmission plate 31 between the intermediate fixed disk 7 and the first clutch pressure plate 11 is connected to the intermediate fixed disk 7 through a third hexagon socket head cap screw 28, and the other end is connected to the first clutch pressure plate 11 through a tenth hexagon socket head cap screw 58. A first spring washer 29 is arranged between the third hexagon socket head cap screw 28 and its corresponding bolt seat 30. A second spring washer 57 is arranged between the tenth hexagon socket head cap screw 58 and its corresponding bolt seat. During the rotation of the intermediate fixed disk 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 driving plate between the intermediate fixing plate 7 and the second clutch pressure plate 5 has the same connection relationship as the driving plate between the intermediate fixing plate 7 and the first clutch pressure plate 11, so it will not be elaborated here.

[0075] As Figure 3 shown, at the hole wall of the first clutch flywheel 15, there are a first clutch hydraulic oil inlet / outlet hole 47, a second clutch hydraulic oil inlet / outlet hole 46, and a circulating oil inlet hole 49. Both the first clutch flywheel 15 and the intermediate fixing plate 7 are provided with hydraulic oil channels. The hydraulic oil enters the hydraulic oil channel in the first clutch flywheel 15 through the first clutch hydraulic oil inlet / outlet hole 47, and flows along the hydraulic oil channel in the intermediate fixing plate 7 to the first cylinder piston 10, which plays a role in pushing the first cylinder piston 10. The first cylinder piston 10 exerts an extrusion effect on the first oil-resistant friction part combination, making the first clutch in the engaged state. When the first clutch is in the disengaged state, under the reset action of the separation spring 26 and the cylinder return spring 27, the first cylinder piston 10 is reset. At this time, the hydraulic oil flows out along the hydraulic oil channel in the intermediate fixing plate 7, the hydraulic oil channel in the first clutch flywheel 15, and the first clutch hydraulic oil inlet / outlet hole 47 respectively.

[0076] The second clutch hydraulic oil inlet / outlet hole 46 is communicated with the hydraulic oil channel in the first clutch flywheel 15, and the hydraulic oil channels are communicated with each other. The hydraulic oil channel in the intermediate fixing plate 7 is communicated with the second groove where the second cylinder piston 6 is placed. Through the flow of the hydraulic oil in the second clutch hydraulic oil inlet / outlet hole 46, the hydraulic oil channel in the first clutch flywheel 15, and the hydraulic oil channel in the intermediate fixing plate 7, the separation and engagement of the second clutch are realized. The separation and engagement process is the same as the working process of the first clutch above, so it will not be elaborated here.

[0077] The first clutch flywheel 15 and the intermediate fixing plate 7 are also provided with circulating oil channels, and the circulating oil channels are communicated with each other. The circulating oil channel in the first clutch flywheel 15 is communicated with the circulating oil inlet hole 49 on the first clutch flywheel 15. The circulating oil channel in the intermediate fixing plate 7 is communicated with the second clutch circulating oil conduit 44, and a second throttle plug 53 is provided at the communication place to control the flow rate of the circulating oil. The circulating oil channel in the first clutch flywheel 15 is communicated with the first circulating oil inflow chamber, and a first throttle plug 52 is provided at the communication place. Through the first throttle plug 52, a certain blocking effect is exerted on the flow of the circulating oil. A plug 50 is provided in the circulating oil inlet hole 49.

[0078] The circulating oil sequentially passes through the circulating oil inlet hole 49, the circulating oil passage in the first clutch flywheel disc 15, and the circulating oil passage in the intermediate fixed disc 7, enters the first sealing chamber of the first clutch and the second sealing chamber of the second clutch, and enters the first oil-resistant friction part combination and the second oil-resistant friction part combination, so as to form an oil friction between the paper base sheet 2 and the steel sheet 3, and at the same time, the temperature generated by the friction between the paper base sheet 2 and the steel sheet 3 can be reduced.

[0079] In this embodiment, taking the first clutch as an example, its specific working process is introduced. When the first clutch is in the engaged state, the hydraulic oil with oil pressure flows into the first oil cylinder piston 10 through the first clutch hydraulic oil inlet and outlet hole 47. Under the pressure of the hydraulic oil, the first oil cylinder piston 10 presses the first clutch pressure plate 11 towards the first clutch flywheel disc. The torque of the engine is transmitted to the first oil-resistant friction part combination through the first clutch flywheel disc 15 and the first clutch pressure plate 11, and is transmitted to the first transmission power input shaft through the first disc hub. During the process of being pressed against each other, the oil cylinder return spring 27 between the first clutch pressure plate 11 and the first clutch outer ring 12, and the separation spring 26 located between adjacent steel sheets are pressed, and a thrust is generated inside the spring.

[0080] When the first clutch is in the separated state, the clutch pedal is depressed, and the oil pressure of the hydraulic oil supplied to the first oil cylinder piston 10 is removed. The oil cylinder return spring 27 and the separation spring 26 are reset. Under the return force of the oil cylinder return spring 27 and the separation spring 26, the first oil cylinder piston 10 moves in the reverse 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 frictional torque acting on the first oil-resistant friction part combination disappears, and the resistance transmission is interrupted.

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

[0082] In this embodiment, through the alternating separation and engagement between the first clutch and the second clutch, that is, when the first clutch is in the separated state, the second clutch is in the engaged state; when the second clutch is in the engaged state, the second clutch is in the separated state, so as to realize the uninterrupted power of the automatic vehicle. In addition, since this application includes two clutch assemblies, one of the clutch assemblies can also be used to realize the walking drive, and the other clutch assembly can be used to drive the action components to complete other actions at this time.

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

[0084] In this application, two oil-resistant friction members can be arranged between the first oil cylinder piston and the second oil cylinder piston. At this time, the first oil cylinder piston is located in the groove of the first clutch flywheel disc, and the first combination of oil-resistant friction members is located between the first oil cylinder piston and the intermediate fixing disc. The second oil cylinder piston is located in the groove of the second clutch flywheel disc, and the second combination of oil-resistant friction members is located between the second oil cylinder piston and the intermediate fixing disc.

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

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

[0087] In this application, the first oil cylinder piston can also be located in the first sealing chamber. The first oil cylinder piston is connected to the first connecting plate. The first connecting plate is located on the left or right side of the first combination of oil-resistant friction members. During the reciprocating movement of the first oil cylinder piston driving the first connecting plate, the separation or engagement of the first clutch is achieved. When the first connecting plate is located on the left side of the first combination of oil-resistant friction members, at this time, the first oil-resistant friction member is located between the first pressure plate connected to the first connecting plate and the first clutch flywheel disc. When the first connecting plate is located on the right side of the first combination of oil-resistant friction members, at this time, the first oil-resistant friction member is located between the first pressure plate connected to the first connecting plate and the intermediate fixing disc.

[0088] Similarly, the second oil cylinder piston can also be located in the second sealing 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 combination of oil-resistant friction members. During the reciprocating movement of the second oil cylinder piston driving the second connecting plate, the separation or engagement of the second clutch is achieved. When the second connecting plate is located on the left side of the second combination of oil-resistant friction members, at this time, the second oil-resistant friction member is located between the second pressure plate connected to the second connecting plate and the second clutch flywheel disc. When the second connecting plate is located on the right side of the second combination of oil-resistant friction members, at this time, the second oil-resistant friction member is located between the second pressure plate connected to the second connecting plate and the intermediate fixing disc.

[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] Embodiment 3

[0098] Different from Embodiment 2, in this embodiment, the second clutch flywheel disc 1 is driven to rotate by a flexible disc, as Figure 5 shown. The flexible disc is fixedly connected to the second clutch flywheel disc 1 by bolts. Through the rigid connection between the flexible disc and the second clutch flywheel disc 1, when the flexible disc rotates, it drives the second clutch flywheel disc 1 to rotate.

[0099] Others are the same as Embodiment 2.

[0100] In the above Embodiment 1, the driving mode of the spline connection can also be replaced by the driving mode of the flexible disc.

[0101] The wet dual clutch assembly provided by the present utility model has been introduced in detail above. Specific examples are used herein to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model. It should be noted that for those of ordinary skill in the art of this technology, without departing from the principle of the present utility model, several improvements and modifications can be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model. The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to these embodiments shown herein, but rather will be accorded 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 and a second clutch, wherein the first clutch and the second clutch respectively comprise an oil-resistant friction member assembly, wherein the oil-resistant friction member assembly comprises a plurality of paper substrates and steel sheets arranged at staggered intervals, and the paper substrates and the steel sheets are arranged along the axial direction of the wet dual clutch assembly; The first clutch and the second clutch are fixedly connected via an intermediate fixed plate; The first clutch comprises: 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 external teeth, the center hole of which is fixed with the first hub, the external teeth of the first hub are connected with the internal teeth of the oil-resistant friction member assembly, and the first hub is connected with the power input shaft of the first gearbox; The second clutch comprises: 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.

2. The wet dual clutch assembly according to claim 1, 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.

3. The wet dual clutch assembly according to claim 2, 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 is located between the first clutch flywheel disc and the first pressure plate, and the oil-resistant friction component combination in the second clutch is located between the second clutch flywheel disc and the second pressure plate.

4. The wet dual clutch assembly according to claim 2, 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 is located between the intermediate fixed plate and the first pressure plate, and the oil-resistant friction component combination in the second clutch is located between the intermediate fixed plate and the second pressure plate.

5. The wet dual clutch assembly according to claim 2, characterized in that: The oil-resistant friction component combination in the first clutch is located between the intermediate fixed plate and the first pressure plate, while the oil-resistant friction component combination in the second clutch is located between the second pressure plate and the second clutch flywheel plate; Alternatively, the oil-resistant friction component combination in the first clutch is located between the first pressure plate and the first clutch flywheel plate, and the oil-resistant friction component combination in the second clutch is located between the second pressure plate and the intermediate fixed plate.

6. The wet dual clutch assembly according to claim 2, 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.

7. The wet dual clutch assembly according to claim 2, 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.

8. The wet dual clutch assembly according to claim 7, 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.

9. The wet dual clutch assembly according to claim 7, 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.

10. The wet dual clutch assembly according to claim 1, characterized in that: The first clutch and the second clutch are provided with shields on the outside; 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.

11. The wet dual clutch assembly according to claim 1 or 10, 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 sides of the first clutch and the second clutch, the bearing sleeve is arranged in the central hole of the shield, and the bearing sleeve is fixedly connected to the shield.

12. The wet dual clutch assembly according to claim 1, 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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