Wet type three-action clutch assembly

Abstract

The utility model relates to the technical field of tractor clutch assemblies, in particular to a wet type three-function clutch assembly. The clutch comprises a main clutch part and an auxiliary clutch part, the main clutch part is in transmission connection with the first walking shaft, and the auxiliary clutch part is in transmission connection with the second walking shaft; each of the main clutch part and the auxiliary clutch part comprises an oil-resistant friction piece combination, each oil-resistant friction piece combination comprises a plurality of steel sheets and a plurality of paper substrates, and the steel sheets and the paper substrates are sequentially and alternately arranged at intervals in the axial direction of the clutch assembly; a spline hole is formed in the auxiliary clutch part, and a spline shaft connected with an external power input shaft is arranged in the spline hole. The service life of the clutch of the tractor is prolonged, and the working efficiency of the tractor is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tractor clutch assemblies, in particular to a wet three-action clutch assembly. Background Art

[0002] The clutch failure rate of domestic large and medium-sized tractors is relatively high, among which the clutch system failure rate accounts for about 11.7% of the failure rate of medium-sized tractors and 27.5% of the failure rate of large tractors. This shows that clutch failure is a more prominent problem in the use of tractors, which has a great impact on the user experience and safety.

[0003] The most common clutch failure is the burning of the clutch plate. The main reason for the burning of the clutch plate is the slipping of the clutch, and the direct reason for the slipping of the clutch is that the ability of the clutch to transmit torque is less than the torque required by the load. The above situation usually occurs for the following reasons: first, overload work and excessive load; second, improper operation, such as half-stepping on the clutch, that is, the friction plate and the cover assembly are in a semi-linked state for a long time. Once the friction plate 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 tractor.

[0004] The wet three-acting clutch assembly proposed in the present application solves the use requirements of the multifunctional automatic transmission for large and medium-sized tractors, and fills the gap of the multifunctional automatic transmission for domestic tractors. Utility Model Content

[0005] The utility model aims to overcome the above-mentioned defects in the prior art and proposes a wet three-action clutch assembly, which prolongs the service life of the tractor clutch and improves the working efficiency of the tractor.

[0006] The technical solution of the utility model is: a wet three-acting clutch assembly, which includes a main clutch part and a secondary clutch part, the main clutch part is connected to the first travel shaft by transmission, and the secondary clutch part is connected to the second travel shaft by transmission;

[0007] The main clutch part and the auxiliary clutch part both include an oil-resistant friction component assembly, which includes a plurality of steel sheets and a plurality of paper-based sheets, and the steel sheets and the paper-based sheets are sequentially spaced and alternately arranged along the axial direction of the clutch assembly;

[0008] A spline hole is arranged in the auxiliary clutch part, and a spline shaft connected with an external power input shaft is arranged in the spline hole.

[0009] In the utility model, the main clutch part includes a main clutch flywheel disc and a main clutch outer ring, the auxiliary clutch part includes an auxiliary clutch flywheel disc and an auxiliary clutch outer ring, and the main clutch part and the auxiliary clutch part are fixedly connected through an intermediate fixed disc;

[0010] One axial side of the outer ring of the main clutch is fixedly connected to the flywheel disc of the main clutch, and the other axial side of the outer ring of the clutch is fixedly connected to the intermediate fixing disc;

[0011] One axial side of the outer ring of the auxiliary clutch is fixedly connected to the intermediate fixing disc, and the other axial side of the outer ring of the auxiliary clutch is fixedly connected to the flywheel disc of the auxiliary clutch.

[0012] The main clutch part further includes a main clutch cylinder piston. The main clutch flywheel disc, the outer ring of the main clutch and the intermediate fixing disc form a sealed chamber, and both the main clutch cylinder piston and the oil-resistant friction part combination of the main clutch are arranged in this sealed chamber;

[0013] The oil-resistant friction part combination of the main clutch part is arranged between the main clutch cylinder piston and the main clutch flywheel disc, or between the main clutch cylinder piston and the intermediate fixing disc. A main clutch pressure plate is arranged between the main clutch cylinder piston and the oil-resistant friction part combination of the main clutch part, and an oil cylinder return spring is connected between the main clutch pressure plate and the outer ring of the main clutch.

[0014] The outer edge of the steel sheet of the oil-resistant friction part combination of the main clutch part is in tooth connection with the outer ring of the main clutch, and the inner edge of the paper base sheet of the oil-resistant friction part combination of the main clutch part is in tooth connection with the external teeth of the main hub. A main hub is arranged in the central hole of the external teeth of the main hub;

[0015] The outer circular end face of the main hub is fixedly connected to the external teeth of the main hub, and the inner wall of the main hub is connected to the first walking shaft through splines;

[0016] The intermediate fixing disc is connected to the main hub through a second deep groove ball bearing.

[0017] The auxiliary clutch part further includes an auxiliary clutch cylinder piston. The flywheel disc of the auxiliary clutch, the outer ring of the auxiliary clutch and the intermediate fixing disc form a sealed chamber, and both the auxiliary clutch cylinder piston and the oil-resistant friction part combination of the auxiliary clutch are arranged in this sealed chamber;

[0018] The oil-resistant friction part combination of the auxiliary clutch part is arranged between the auxiliary clutch cylinder piston and the flywheel disc of the auxiliary clutch, or between the auxiliary clutch cylinder piston and the intermediate fixing disc. An auxiliary clutch pressure plate is arranged between the auxiliary clutch cylinder piston and the oil-resistant friction part combination of the auxiliary clutch part, and an oil cylinder return spring is connected between the auxiliary clutch pressure plate and the outer ring of the auxiliary clutch.

[0019] The outer edge of the steel sheet of the oil-resistant friction part combination of the auxiliary clutch is in tooth connection with the outer ring of the auxiliary clutch, and the inner edge of the paper base sheet of the oil-resistant friction part combination of the auxiliary clutch is in tooth connection with the external teeth of the auxiliary hub. An auxiliary hub is arranged in the central hole of the external teeth of the auxiliary hub;

[0020] The outer circular end face of the auxiliary hub is fixedly connected to the external teeth of the main hub, and the inner wall of the auxiliary hub is connected to the second walking shaft through a spline;

[0021] The auxiliary clutch flywheel disc is connected to the auxiliary hub through a first deep groove ball bearing.

[0022] There are sequentially connected hydraulic oil flow channels in the main clutch flywheel disc, the main clutch outer ring, the intermediate fixing disc, the auxiliary clutch outer ring, and the auxiliary clutch flywheel disc. The hydraulic oil inlet and outlet provided on the main clutch flywheel disc are connected to the hydraulic oil flow channels;

[0023] The hydraulic oil flow channels are respectively connected to the piston of the main clutch oil cylinder and the piston of the auxiliary clutch oil cylinder.

[0024] There are sequentially connected cooling oil flow channels in the main clutch flywheel disc, the main clutch outer ring, and the intermediate fixing disc. The cooling oil inlet provided on the main clutch flywheel disc is connected to the cooling oil flow channels;

[0025] A main clutch cooling oil cover is provided on the axial side of the main clutch flywheel disc facing the intermediate fixing disc. There are several oil outlet grooves on the surface of the main clutch cooling oil cover facing the main clutch oil-resistant friction part combination. A cooling oil cavity is formed between the main clutch cooling oil cover and the main clutch flywheel disc. The cooling oil flow channels are connected to the cooling oil cavity, and a second throttle plug is provided at the connection;

[0026] Several auxiliary clutch cooling oil conduits are provided at intervals on the axial side of the intermediate fixing disc facing the auxiliary clutch flywheel disc. There are several oil outlet grooves on the surface of the auxiliary clutch cooling oil conduit facing the auxiliary clutch oil-resistant friction part combination. The cooling oil flow channels are connected to the auxiliary clutch cooling oil conduits, and a first throttle plug is provided at the connection.

[0027] The intermediate fixing disc is respectively connected to the main clutch outer ring and the auxiliary clutch outer ring through drive plates;

[0028] One end of the drive plate is connected to the intermediate fixing disc through an inner hexagonal bolt. The inner hexagonal bolt is arranged in a bolt sleeve, and a spring washer is provided between the inner hexagonal bolt and the bolt sleeve;

[0029] The other end of the transmission plate is connected to the main clutch outer ring or the auxiliary clutch outer ring through an inner hexagonal bolt. The inner hexagonal bolt is arranged in a bolt sleeve, and a spring washer is provided between the inner hexagonal bolt and the bolt sleeve.

[0030] A protective cover is provided on the outside of the main clutch flywheel disc, the main clutch outer ring, the intermediate fixing disc, the auxiliary clutch outer ring, and the auxiliary clutch flywheel disc;

[0031] There are gaps between the outer ring of the main clutch, the intermediate fixed disk, the outer ring of the secondary clutch, and the annular outer wall of the secondary clutch flywheel disk and the inner wall of the adjacent shield. There is also a gap between the axial side wall of the main clutch flywheel disk and the inner wall of the adjacent shield. An oil guide wheel is provided in this gap, and the oil guide wheel is communicated with the cooling oil outlet;

[0032] After the cooling oil converges and falls into the oil guide wheel, it flows out through the cooling oil outlet.

[0033] A bearing sleeve is fixed on the axial side of the main clutch flywheel disk facing away from the intermediate fixed disk;

[0034] When a shield is provided on the outside of the main clutch flywheel disk and the secondary clutch flywheel disk, one end of the shield is fixedly connected to the outer circular end face of the secondary clutch flywheel disk, and a bearing sleeve is provided in the central hole at the other end of the shield, and the bearing sleeve is fixedly connected to the shield.

[0035] The secondary clutch flywheel disk is driven by power through a spline connection method or through a flexible disk.

[0036] The beneficial effects of the present utility model are:

[0037] The wet triple-action clutch assembly proposed in this application effectively solves the problem of high-temperature ablation of the tractor clutch, extends the service life of the clutch in the tractor, and improves the working efficiency and service life of the tractor;

[0038] At the same time, this clutch assembly meets the usage requirements of the existing large and medium-sized tractor multi-functional automatic transmission, filling the domestic blank of the tractor multi-functional automatic transmission. Description of the Drawings

[0039] Figure 1 It is the first sectional structural schematic diagram of the present utility model in Embodiment 1;

[0040] Figure 2 It is the second sectional structural schematic diagram of the present utility model in Embodiment 1;

[0041] Figure 3 It is the sectional structural schematic diagram of the present utility model in Embodiment 2;

[0042] Figure 4 It is the first sectional structural schematic diagram of the present utility model in Embodiment 3.

[0043] In the figure: 1 main clutch flywheel disc; 2 first O-ring; 3 main clutch outer ring; 4 main clutch pressure plate; 5 main clutch cylinder piston; 6 second O-ring; 7 intermediate fixing plate; 8 secondary clutch cylinder piston; 9 secondary clutch pressure plate; 10 secondary clutch outer ring; 11 steel sheet; 12 paper-based sheet; 13 secondary clutch flywheel disc; 14 first nut; 15 secondary clutch cooling oil conduit; 16 first rivet; 17 splined shaft hole; 18 first deep groove ball bearing; 19 second deep groove ball bearing; 20 secondary disc hub; 21 second rivet; 22 external teeth of secondary disc hub; 23 first hexagon socket head bolt; 24 third O-ring; 25 secondary clutch cooling oil fixing plate; 26 drive plate; 27 first bolt seat; 28 first spring washer; 29 second hexagon socket head bolt; 30 cylinder return spring; 31 release spring; 32 fourth O-ring; 33 third hexagon socket head bolt; 34 main clutch cooling oil cover; 35 external teeth of main disc hub; 36 main disc hub; 37 hydraulic oil flow passage; 38 fourth hexagon socket head bolt; 39 bearing sleeve; 40 fifth hexagon socket head bolt; 41 first throttle plug; 42 second throttle plug; 43 cooling oil flow passage; 44 plug; 45 sixth hexagon socket head bolt; 46 guide band; 47 second spring washer; 48 seventh hexagon socket head bolt; 49 cooling oil inlet; 50 oil guide wheel; 51 guard; 52 fifth O-ring; 53 third rivet; 54 secondary clutch flywheel disc gasket; 55 eighth hexagon socket head bolt; 56 flexible disc; 57 ninth hexagon socket head bolt; 58 hydraulic oil inlet and outlet. Detailed implementation manners

[0044] 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 in conjunction with the accompanying drawings.

[0045] 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.

[0046] Embodiment 1

[0047] As Figure 1 and Figure 2 shown, the wet triple-action clutch assembly in this embodiment includes a main clutch part and a secondary clutch part. During the operation of the main clutch part, it drives the first walking shaft to rotate; during the operation of the secondary clutch part, it drives the second walking shaft to rotate. At the same time, the secondary clutch part is also provided with a splined hole, and a splined shaft is arranged in the splined hole, and the splined shaft is connected to the power output shaft. During the rotation of the secondary clutch part, torque is transmitted to the power output shaft through the splined shaft.

[0048] The main clutch part includes the main clutch flywheel disc 1 and the main clutch outer ring 3. The auxiliary clutch part includes the auxiliary clutch flywheel disc 13 and the auxiliary clutch outer ring 10. The intermediate fixing disc 7 is located between the main clutch part and the auxiliary clutch part, and plays a role in connecting the main clutch part and the auxiliary clutch part. Therefore, as Figure 2 shown, the outer circumferential end face of the main clutch flywheel disc 1, the main clutch outer ring 3, the outer circumference of the intermediate fixing disc 7, the auxiliary clutch outer ring 10, and the outer circumferential end face of the auxiliary clutch flywheel disc 13 are sequentially fixedly connected by the fifth hexagon socket head cap screw 40, so as to connect the main clutch part and the auxiliary clutch part into an integral structure.

[0049] The axial side of the main clutch flywheel disc 1 facing away from the intermediate fixing disc is fixedly connected to the bearing sleeve 39 by the sixth hexagon socket head cap screw 45, and the driving of the oil pump is realized through the bearing sleeve 39. A spline shaft is provided on the axial side of the auxiliary clutch flywheel disc 1 facing away from the intermediate fixing disc, and the connection between the clutch assembly and the shock absorber is realized through the spline shaft. Therefore, in this embodiment, the power drive of the clutch assembly is realized through spline connection.

[0050] In the main clutch part, a first O-ring 2 is provided at the connection between one end of the main clutch outer ring 3 and the outer circumferential end face of the main clutch flywheel disc 1, and a second O-ring 6 is provided at the connection between the other end of the main clutch outer ring 3 and the outer circumferential end face of the intermediate fixing disc 7. Both the first O-ring 2 and the second O-ring 6 play a role in sealing. The main clutch flywheel disc 1, the main clutch outer ring 3 and the intermediate fixing disc 7 form a closed chamber, and the main clutch oil cylinder piston 5 and the main clutch oil-resistant friction part combination are arranged in this chamber.

[0051] In this embodiment, the main clutch oil-resistant friction part combination is located between the main clutch oil cylinder piston 5 and the main clutch flywheel disc 1. Therefore, a groove is provided on the axial side of the intermediate fixing disc facing the main clutch flywheel disc 1, and the main clutch oil cylinder piston 5 is slidably arranged in this groove. The main clutch oil-resistant friction part combination can also be located between the main clutch oil cylinder piston 5 and the intermediate fixing disc 7. At this time, a groove is provided on the axial side of the main clutch flywheel disc 1 facing the intermediate fixing disc, and the main clutch oil cylinder piston 5 is located in this groove.

[0052] In this application, the structural relationship between the main clutch oil cylinder piston 5 and the main clutch oil-resistant friction part combination is not limited to the above. A push plate can be fixedly connected to the output end of the main clutch oil cylinder piston 5, and the main clutch oil-resistant friction part combination is located between the push plate and the main clutch flywheel disc 1, or between the push plate and the intermediate fixing disc 7.

[0053] A fourth O-ring 32 and a guide belt 46 are provided between the annular outer wall of the main clutch cylinder piston 5 and the side wall of the adjacent groove, and a third O-ring 24 is provided between the annular inner wall of the main clutch cylinder piston 5 and the side wall of the adjacent groove. Through the fourth O-ring 32 and the third O-ring 24, the sealing of the hydraulic oil is achieved during the reciprocating movement of the main clutch cylinder piston 5 in the groove. During the movement of the main clutch cylinder piston 5 in the groove, the guide belt 46 plays a guiding role.

[0054] A hydraulic oil inlet and outlet 58 is provided at the annular inner wall of the main clutch flywheel disc 1. Correspondingly, hydraulic oil flow channels 37 that communicate with each other are provided in the main clutch flywheel disc 1, the main clutch outer ring 3, and the intermediate fixing disc 7. The hydraulic oil inlet and outlet 58 is communicated with the hydraulic oil flow channel 37 in the main clutch flywheel disc 1. After the hydraulic oil enters the main clutch flywheel disc through the hydraulic oil inlet and outlet 58, it flows into the main clutch cylinder piston 5 through the hydraulic oil flow channels 37 in the main clutch flywheel disc 1, the main clutch outer ring 3, and the intermediate fixing disc 7 in sequence. The flowing hydraulic oil enables the main clutch cylinder piston 5 to apply a pressing force to the main clutch oil-resistant friction part combination.

[0055] In this embodiment, a main clutch pressure plate 4 is provided between the main clutch cylinder piston 5 and the main clutch oil-resistant friction part combination. During the movement of the main clutch piston 5, the pressing force is applied to the main clutch oil-resistant friction part combination through the main clutch pressure plate 4. An oil cylinder return spring 30 is connected between the main clutch pressure plate 4 and the main clutch outer ring 3. During the process of the main clutch cylinder piston 5 pushing the main clutch pressure plate 4 to move towards the main clutch oil-resistant friction part combination, the oil cylinder return spring 30 is in a compressed state. When the hydraulic oil flows back and the pressure of the hydraulic oil acting on the main clutch oil cylinder 5 is removed, under the elastic force of the oil cylinder return spring 30, the main clutch piston 5 and the main clutch pressure plate 4 can automatically reset.

[0056] The main clutch oil-resistant friction part combination includes several steel sheets 11 and paper base sheets 12 that are arranged alternately at intervals. The paper base sheets are provided on one or both sides of the steel sheet. Paper base sheets are provided between the main clutch oil-resistant friction part combination and the main clutch pressure plate 4, and between the main clutch oil-resistant friction part combination and the first clutch flywheel disc 1. In this application, the steel sheets 11 and the paper base sheets 12 are arranged alternately at intervals along the axial direction of the clutch assembly.

[0057] External teeth are provided at the outer edge of the steel sheet 11. The steel sheet is connected to the main clutch outer ring 3 through its external teeth. Therefore, when the main clutch outer ring 3 rotates, it drives the steel sheet 11 to rotate together, and at the same time, the steel sheet 11 can also slide axially along the inner wall of the first clutch outer ring 3. Separation springs 31 are provided between the outer edges of adjacent two steel sheets. When the clutch is in the separated state, the separation springs 31 can ensure that the distance between adjacent two steel sheets is the same, preventing the uneven spacing between the steel sheets.

[0058] The paper base sheet 12 is connected to the main disk hub 36 through the external teeth 35 of the main disk hub. The main disk hub 36 is connected to the first traveling shaft through a spline. Specifically, internal teeth are provided at the inner edge of the paper base sheet 12, and the paper base sheet 12 is connected to the external teeth 35 of the main disk hub through its internal teeth. The main disk hub 36 is arranged in the central hole of the external teeth 35 of the main disk hub. The annular outer circle of the main disk hub 36 is fixedly connected to the external teeth 35 of the main disk hub through the first rivet 16, and the annular inner wall of the main disk hub 36 is connected to the first traveling shaft through a spline.

[0059] A second deep groove ball bearing 19 is provided between the inner circular end face of the intermediate fixing disk 7 and the main disk hub 36. Through the second deep groove ball bearing 19, the concentricity between the intermediate fixing disk 7 and the main disk hub 36 is ensured.

[0060] A cooling oil inlet 49 is provided on the main clutch flywheel disk. Cooling oil flow channels 43 that are sequentially connected are provided in the main clutch flywheel disk, the outer ring of the main clutch, and the intermediate fixing disk. The cooling oil inlet 49 is communicated with the cooling oil flow channel 43 in the main clutch flywheel disk, and a plug screw 44 is provided at the cooling oil inlet 49. Two oil outlets are provided on the cooling oil flow channel 43 so that the cooling oil in the cooling oil flow channel 43 can flow into the main clutch part and the sub-clutch part.

[0061] A main clutch cooling oil cover 34 is fixed on the axial side of the main clutch flywheel disk facing the intermediate fixing disk. The main clutch cooling oil cover 34 is fixedly connected to the main clutch flywheel disk 1 through the third hexagon socket head cap screw 33. A cooling oil cavity is formed between the main clutch cooling oil cover 34 and the main clutch flywheel disk 1. The cooling oil cavity is communicated with one of the oil outlets, and the cooling oil in the cooling oil flow channel 43 can flow into the cooling oil cavity through this oil outlet. A second throttle plug screw 42 is provided at this oil outlet to throttle and reduce the pressure of the cooling oil flowing into the main clutch part. An oil outlet groove is provided on the side of the main clutch cooling oil cover 34 facing the main clutch oil-resistant friction part assembly. The cooling oil flows into the main clutch oil-resistant friction part assembly through the oil outlet groove to cool the main clutch oil-resistant friction part assembly participating in the clutch action.

[0062] Hydraulic oil with hydraulic pressure enters the hydraulic oil flow passage 37 through the hydraulic oil inlet and outlet 58 and flows into the main clutch cylinder piston 5. At this time, the main clutch part is in the engaged state. The main clutch cylinder piston 5 is pushed by the pressure of the hydraulic oil to move in the direction of the main clutch oil-resistant friction part combination. Therefore, the main clutch cylinder piston 5 presses the main clutch pressure plate 4 tightly in the direction of the main clutch oil-resistant friction part combination. The torque of the engine is transmitted to the main clutch oil-resistant friction part combination through the main clutch flywheel disc 1 and the main clutch outer ring 3. The paper-based sheet in the main clutch oil-resistant friction part combination drives the first walking shaft to rotate through the main clutch hub. During the process of the main clutch oil-resistant friction part combination being pressed tightly, the cylinder return spring 30 and the release spring 31 are squeezed to generate elastic force.

[0063] During the engagement process, in fact, the transmission of torque is achieved by using the friction between the paper-based sheet and the steel sheet. A large amount of heat will be generated during the friction process between the paper-based sheet and the steel sheet. The main clutch oil-resistant friction part combination is cooled by the cooling oil. The cooling oil flows into the main clutch oil-resistant friction part combination and is thrown out as the main clutch rotates. During the flow of the cooling oil, the heat in the main clutch oil-resistant friction part combination can be taken away, realizing the cooling of the main clutch oil-resistant friction part combination.

[0064] When the main clutch part is in the disengaged state, the hydraulic pressure of the hydraulic oil supplied to the main clutch becomes smaller at this time. The cylinder return spring 30 and the release spring 31 return to their original positions. Under the return force of the cylinder return spring 30 and the release spring 31, the main clutch cylinder piston 5 is pushed and moves in the reverse direction. At this time, the frictional torque acting on the main clutch oil-resistant friction part combination disappears, interrupting the power transmission.

[0065] In the auxiliary clutch part, a closed chamber is also formed among the auxiliary clutch flywheel disc 13, the auxiliary clutch outer ring 10, and the intermediate fixed disc 7. The auxiliary clutch cylinder piston 8 and the auxiliary clutch oil-resistant friction part combination are arranged in the closed chamber. A spline hole is provided in the auxiliary clutch flywheel disc 13, and a spline shaft is arranged in the spline hole. The spline shaft is connected to the power input shaft outside the clutch assembly.

[0066] As described above, the auxiliary clutch oil-resistant friction part combination can be located between the auxiliary clutch cylinder piston 8 and the auxiliary clutch flywheel disc 13. At this time, a groove is provided on the axial side of the intermediate fixed disc facing the auxiliary clutch flywheel disc 13, and the auxiliary clutch cylinder piston 8 is slidably arranged in the groove. The auxiliary clutch oil-resistant friction part combination can also be located between the auxiliary clutch cylinder piston 8 and the intermediate fixed disc 7. At this time, a groove is provided on the axial side of the auxiliary clutch flywheel disc 13 facing the intermediate fixed disc, and the auxiliary clutch cylinder piston 8 is slidably arranged in the groove.

[0067] In addition, a push plate may be fixedly connected to the output end of the sub-clutch cylinder piston 8, and the sub-clutch cylinder piston 8 is located between the push plate and the sub-clutch flywheel disc 13, or between the push plate and the intermediate fixed disc 7.

[0068] In this embodiment, a sub-clutch pressure plate 9 is provided between the sub-clutch cylinder piston 8 and the sub-clutch oil-resistant friction part combination. During the movement of the sub-clutch cylinder piston 8, the thrust is transmitted to the sub-clutch oil-resistant friction part combination through the sub-clutch pressure plate 9, so as to apply an extrusion force to the sub-clutch oil-resistant friction part combination. The sub-clutch pressure plate 9 is connected to the sub-clutch outer ring 10 through an oil cylinder return spring 30.

[0069] The structure of the sub-clutch oil-resistant friction part combination is exactly the same as that of the main-clutch oil-resistant friction part combination, so it will not be elaborated here. The paper base sheet 12 of the sub-clutch oil-resistant friction part combination is connected to the sub-disc hub 20 through the outer teeth of the sub-disc hub 22, and the sub-disc hub 20 is connected to the second traveling shaft through a spline.

[0070] Specifically, internal teeth are provided at the inner edge of the paper base sheet 12 of the sub-clutch oil-resistant friction part combination, and the paper base sheet 12 is connected to the outer teeth of the sub-disc hub 22 through the internal teeth. The sub-disc hub 20 is arranged in the central hole of the outer teeth of the sub-disc hub 22. The annular outer circle of the sub-disc hub 20 is fixedly connected to the outer teeth of the sub-disc hub 22 through a second rivet 21, and the annular inner wall of the sub-disc hub 20 is connected to the second traveling shaft through a spline.

[0071] A first deep groove ball bearing 18 is provided between the sub-clutch flywheel disc 13 and the sub-disc hub 20. Through the first deep groove ball bearing 18, the concentricity between the sub-clutch flywheel disc 13 and the sub-disc hub 20 is ensured.

[0072] Several sub-clutch cooling oil conduits 15 are provided at intervals on the axial side of the intermediate fixed disc 7 facing the sub-clutch flywheel disc, and the ends of the sub-clutch cooling oil conduits 15 are fixedly connected to the intermediate fixed disc 7. The sub-clutch cooling oil conduit 15 is connected to one of the oil outlets on the cooling oil flow path, and a first throttle plug 41 is provided at the oil inlet of the sub-clutch cooling oil conduit 15. Through the first throttle plug 41, the cooling oil entering the sub-clutch part is depressurized and throttled. An oil outlet groove is provided on one side of the sub-clutch cooling oil conduit 15 facing the sub-clutch oil-resistant friction part combination. After the cooling oil in the cooling oil flow path flows into the sub-clutch cooling oil conduit 15, it flows into the sub-clutch oil-resistant friction part combination through the oil outlet groove. During the flow of the cooling oil in the sub-clutch oil-resistant friction part combination, the sub-clutch oil-resistant friction part combination is cooled.

[0073] In this embodiment, the secondary clutch cooling oil conduit 15 passes through the secondary clutch cooling oil fixing plate 25. The secondary clutch cooling oil fixing plate 25 is fixedly connected to the intermediate fixing plate 7 by the first hexagon socket head cap screw. By tightening the first nut 14, the fixed connection between the secondary clutch cooling oil conduit 15 and the secondary clutch cooling oil fixing plate 25 is achieved.

[0074] The working principle of the secondary clutch part is the same as that of the primary clutch part, so it will not be elaborated here.

[0075] The intermediate fixing plate 7 is respectively connected to the primary clutch outer ring 3 and the secondary clutch outer ring 9 through the driving plates 26. Thus, when the intermediate fixing plate 7 rotates, it can drive the primary clutch outer ring 3 and the secondary clutch outer ring 9 to rotate. The two axial side surfaces of the intermediate fixing plate 7 are respectively connected to the driving plates 26. Taking the driving plate 26 arranged between the intermediate fixing plate 7 and the primary clutch outer ring 3 as an example, the specific setting method of the driving plate 26 will be introduced in detail.

[0076] The driving plate 26 is strip-shaped. One end of it is connected to the intermediate fixing plate 7, and the other end is connected to the primary clutch outer ring 3, thus realizing the connection between the intermediate fixing plate 7 and the primary clutch outer ring 3. Specifically, one end of the driving plate 26 is connected to the outer circular end face on one axial side of the intermediate fixing plate 7 through the second hexagon socket head cap screw 29. The second hexagon socket head cap screw 29 is arranged in the first bolt seat 27, and a first spring washer 28 is provided between the second hexagon socket head cap screw 29 and the first bolt seat 27. In this embodiment, the intermediate fixing plate 7 realizes the connection with the driving plates on both sides through one second hexagon socket head cap screw 29. A through hole is provided in the intermediate fixing plate 7, and the second hexagon socket head cap screw 29 is arranged in this through hole.

[0077] The other end of the driving plate 26 is fixedly connected to the outer circular end face of the primary clutch outer ring 3 through the seventh hexagon socket head cap screw 48. The seventh hexagon socket head cap screw 48 is arranged in the second bolt seat, and a second spring washer 47 is provided between the seventh hexagon socket head cap screw 48 and the second bolt seat. Through the above connection method, it can not only ensure that the intermediate fixing plate 7 drives the primary clutch outer ring 3 to rotate through the driving plate 26, but also has no influence on the reciprocating movement of the primary clutch outer ring 3.

[0078] During the working process of this wet triple-action clutch assembly, the primary clutch part can realize the walking of the tractor through the first walking shaft, and the secondary clutch part can realize the walking of the tractor through the second walking shaft. Through the primary clutch part and the secondary clutch part, the power interruption of the tractor's automatic transmission is realized. During the rotation of the secondary clutch flywheel disc 13 in this clutch assembly, it can drive the spline shaft to rotate, and the spline shaft drives the external power input shaft to rotate, thus completing the function of the tractor's power output shaft.

[0079] Embodiment 2

[0080] As Figure 3 shown, in this embodiment, a shield 51 is provided on the annular outer sides of the outer ring 10 of the secondary clutch, the intermediate fixing plate 7, the outer ring 3 of the primary clutch, and the flywheel disc 1 of the primary clutch. The outer circumferential end face of the shield 51 is fixedly connected to the flywheel disc 13 of the secondary clutch by an eighth hexagon socket head cap screw 55, and a flywheel disc gasket 54 of the secondary clutch is provided between the shield 51 and the outer ring 10 of the secondary clutch. A bearing sleeve 39 is provided in the central hole of the shield 51, and the outer circumferential end face between the shield 51 and the bearing sleeve 39 is fixedly connected by a third rivet 53, and a fifth O-ring 52 is provided on the contact surface between the shield 51 and the bearing sleeve 39.

[0081] There is a gap between the inner wall surface of the shield 51 and the outer circumferential wall surfaces of the adjacent outer ring 10 of the secondary clutch, the intermediate fixing plate 7, and the outer ring 3 of the primary clutch, and an oil guiding flap is provided on the inner wall of the shield 51. There is also a gap between the axial inner wall surface of the shield 51 and the axial side wall of the adjacent flywheel disc 1 of the primary clutch, and an oil guiding wheel 50 is provided in this gap. The oil guiding wheel 50 is communicated with the cooling oil outlet. A flap is provided at the bearing sleeve near the cooling oil outlet, and it is convenient to discharge the cooling oil at the oil guiding wheel 50 through the flap. Therefore, in this embodiment, the bearing sleeve can not only play the role of driving the oil pump, but also play the role of discharging the cooling oil.

[0082] The cooling oil flowing into the primary clutch oil-resistant friction part assembly and the secondary clutch oil-resistant friction part assembly is continuously thrown to the inner wall of the shield 51 as the clutch assembly rotates, and the oil guiding flap on the inner wall of the shield 51 collects the cooling oil to the outside of the oil guiding wheel 50. The cooling oil is guided to the cooling oil outlet and discharged through the oil guiding wheel 50, and the discharged cooling oil can flow into the clutch assembly again, realizing the recycling of the cooling oil.

[0083] Others are the same as in Embodiment 1.

[0084] Embodiment 3

[0085] As Figure 4 shown, different from Embodiment 2, in this embodiment, the flywheel disc 13 of the secondary clutch is fixedly connected to the flexible disc by bolts. Through the rigid connection between the flywheel disc of the secondary clutch and the flexible disc, during the rotation of the flexible disc, the flywheel disc of the secondary clutch and the entire clutch assembly are driven to rotate, realizing the power drive of the clutch assembly.

[0086] Others are the same as in Embodiment 2.

[0087] In Embodiment 1, the way of realizing power drive by spline connection of the clutch assembly can also be replaced by the power drive way of the flexible disc in this embodiment.

[0088] The above has introduced in detail the wet three - function clutch assembly provided by the present utility model. Specific examples are used in this article 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 still 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 to the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. A wet three-acting clutch assembly, characterized in that: It includes a main clutch part and a secondary clutch part, the main clutch part is connected to the first traveling shaft by transmission, and the secondary clutch part is connected to the second traveling shaft by transmission; The main clutch part and the auxiliary clutch part both include an oil-resistant friction component assembly, which includes a plurality of steel sheets and a plurality of paper-based sheets, and the steel sheets and the paper-based sheets are sequentially spaced and alternately arranged along the axial direction of the clutch assembly; A spline hole is provided in the auxiliary clutch part, and a spline shaft connected to an external power input shaft is provided in the spline hole; The main clutch part includes a main clutch flywheel disc and a main clutch outer ring, and the auxiliary clutch part includes an auxiliary clutch flywheel disc and an auxiliary clutch outer ring. The main clutch part and the auxiliary clutch part are fixedly connected through an intermediate fixed disc; The axial side surface of one side of the main clutch outer ring is fixedly connected to the main clutch flywheel disc, and the axial side surface of the other side of the clutch outer ring is fixedly connected to the intermediate fixed disc; The axial side surface of one side of the auxiliary clutch outer ring is fixedly connected to the middle fixed disk, and the axial side surface of the other side of the auxiliary clutch outer ring is fixedly connected to the auxiliary clutch flywheel disk; The main clutch part also includes a main clutch oil cylinder piston, a main clutch flywheel disc, a main clutch outer ring and an intermediate fixed disc forming a closed chamber, and the main clutch oil cylinder piston and the main clutch oil-resistant friction parts combination are all arranged in the closed chamber; The auxiliary clutch part also includes an auxiliary clutch cylinder piston. The auxiliary clutch flywheel disc, the auxiliary clutch outer ring and the intermediate fixed disc form a closed chamber. The auxiliary clutch cylinder piston and the auxiliary clutch oil-resistant friction parts combination are all arranged in the closed chamber.

2. The wet triple-acting clutch assembly according to claim 1, characterized in that: The oil-resistant friction parts combination of the main clutch part is arranged between the main clutch cylinder piston and the main clutch flywheel plate, or between the main clutch cylinder piston and the intermediate fixed plate. A main clutch pressure plate is arranged between the main clutch cylinder piston and the oil-resistant friction parts combination of the main clutch part. A cylinder return spring is connected between the main clutch pressure plate and the main clutch outer ring.

3. The wet triple-acting clutch assembly according to claim 2, characterized in that: The outer edge of the steel sheet of the oil-resistant friction component assembly of the main clutch is connected to the outer ring of the main clutch by teeth, the inner edge of the paper base sheet of the oil-resistant friction component assembly of the main clutch is connected to the outer teeth of the main wheel hub by teeth, and the main wheel hub is arranged in the center hole of the outer teeth of the main wheel hub; The outer cylindrical end surface of the main wheel hub is fixedly connected to the outer teeth of the main wheel hub, and the inner wall of the main wheel hub is connected to the first traveling shaft via a spline; The middle fixed plate is connected to the main wheel hub via a second deep groove ball bearing.

4. The wet triple-acting clutch assembly according to claim 2, characterized in that: The oil-resistant friction parts combination of the auxiliary clutch is arranged between the auxiliary clutch cylinder piston and the auxiliary clutch flywheel plate, or between the auxiliary clutch cylinder piston and the intermediate fixed plate. A auxiliary clutch pressure plate is arranged between the auxiliary clutch cylinder piston and the oil-resistant friction parts combination of the auxiliary clutch. A cylinder return spring is connected between the auxiliary clutch pressure plate and the auxiliary clutch outer ring.

5. The wet triple-acting clutch assembly according to claim 4, characterized in that: The outer edge of the steel sheet of the oil-resistant friction component assembly of the auxiliary clutch is connected to the outer ring of the auxiliary clutch by teeth, the inner edge of the paper base sheet of the oil-resistant friction component assembly of the auxiliary clutch is connected to the outer teeth of the auxiliary wheel hub by teeth, and the auxiliary wheel hub is arranged in the center hole of the outer teeth of the auxiliary wheel hub; The outer cylindrical end surface of the secondary wheel hub is fixedly connected to the external teeth of the secondary main wheel hub, and the inner wall of the secondary wheel hub is connected to the second traveling shaft through a spline; The auxiliary clutch flywheel disc and the auxiliary wheel hub are connected through a first deep groove ball bearing.

6. The wet triple-acting clutch assembly according to claim 1, characterized in that: The main clutch flywheel disc, the main clutch outer ring, the intermediate fixed disc, the auxiliary clutch outer ring, and the auxiliary clutch flywheel disc are provided with hydraulic oil flow passages that are connected in sequence, and the hydraulic oil inlet and outlet arranged on the main clutch flywheel disc are connected with the hydraulic oil flow passages; The hydraulic oil flow passage is communicated with the main clutch cylinder piston and the auxiliary clutch cylinder piston respectively.

7. The wet triple-acting clutch assembly according to claim 1, characterized in that: The main clutch flywheel disc, the main clutch outer ring and the intermediate fixed disc are provided with cooling oil flow passages which are connected in sequence, and the cooling oil inlet arranged on the main clutch flywheel disc is connected with the cooling oil flow passage; A main clutch cooling oil cover is provided on the axial side of the main clutch flywheel disc facing the intermediate fixed disc, and a plurality of oil outlet grooves are provided on the surface of the main clutch cooling oil cover facing the main clutch oil-resistant friction component assembly. A cooling oil cavity is formed between the main clutch cooling oil cover and the main clutch flywheel disc, and the cooling oil flow channel is connected with the cooling oil cavity, and a second throttling plugging wire is provided at the connection point; Several auxiliary clutch cooling oil ducts are arranged at intervals on the axial side of the middle fixed plate toward the auxiliary clutch flywheel plate, and several oil outlet grooves are arranged on the surface of the auxiliary clutch cooling oil duct toward the auxiliary clutch oil-resistant friction part combination. The cooling oil flow channel is connected with the auxiliary clutch cooling oil duct, and a first throttling plug is arranged at the connection point.

8. The wet triple-acting clutch assembly according to claim 1, characterized in that: The intermediate fixed plate and the outer ring of the main clutch, and the intermediate fixed plate and the outer ring of the auxiliary clutch are connected respectively through transmission plates; One end of the transmission plate is connected to the middle fixed plate through a hexagon socket bolt, the hexagon socket bolt is arranged in the bolt sleeve, and a spring washer is arranged between the hexagon socket bolt and the bolt sleeve; The other end of the transmission plate is connected to the outer ring of the main clutch or the outer ring of the auxiliary clutch through a hexagon socket bolt, the hexagon socket bolt is arranged in the bolt sleeve, and a spring washer is arranged between the hexagon socket bolt and the bolt sleeve.

9. The wet triple-acting clutch assembly according to claim 1, characterized in that: The main clutch flywheel disc, the main clutch outer ring, the intermediate fixed disc, the auxiliary clutch outer ring, and the auxiliary clutch flywheel disc are provided with a protective cover on the outside; There is a gap between the annular outer wall of the main clutch outer ring, the intermediate fixed plate, the auxiliary clutch outer ring, the auxiliary clutch flywheel plate and the adjacent inner wall of the shield, and there is a gap between the axial side wall of the main clutch flywheel plate and the adjacent inner wall of the shield, and an oil guide wheel is arranged in the gap, and the oil guide wheel is connected with the cooling oil outlet; The cooling oil is collected and falls into the oil guide wheel, and then flows out through the cooling oil outlet.

10. The wet triple-acting clutch assembly according to claim 1 or 9, characterized in that: A bearing sleeve is fixed to the axial side of the main clutch flywheel disc facing away from the intermediate fixed disc; When a shield is provided on the outside of the main clutch flywheel disc and the auxiliary clutch flywheel disc, one end of the shield is fixedly connected to the outer cylindrical end surface of the auxiliary clutch flywheel disc, and a bearing sleeve is provided in the center hole of the other end of the shield, and the bearing sleeve is fixedly connected to the shield.

11. The wet triple-acting clutch assembly according to claim 1, characterized in that: The auxiliary clutch flywheel disc is powered by a spline connection or a flexible disc.

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