Wet type three-action clutch assembly

Abstract

The invention relates to the technical field of tractor clutch assemblies, in particular to a wet type three-action 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 invention relates to the technical field of tractor clutch assemblies, in particular to a wet three-acting 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. Summary of the invention

[0005] The purpose of the present invention is to overcome the above-mentioned defects in the prior art and to provide a wet three-acting 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 present invention 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 traveling shaft by transmission, and the secondary clutch part is connected to the second traveling 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 present invention, 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] 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;

[0011] 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.

[0012] 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;

[0013] 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.

[0014] The outer edge of the steel sheet of the oil-resistant friction component assembly of the main clutch part 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 part 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;

[0015] 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;

[0016] The middle fixed plate is connected to the main wheel hub via a second deep groove ball bearing.

[0017] The auxiliary clutch part also includes an auxiliary clutch oil cylinder piston, an auxiliary clutch flywheel disc, an auxiliary clutch outer ring and an intermediate fixed disc forming a closed chamber, and the auxiliary clutch oil cylinder piston and the auxiliary clutch oil-resistant friction parts combination are all arranged in the closed chamber;

[0018] 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.

[0019] 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;

[0020] 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;

[0021] The auxiliary clutch flywheel disc and the auxiliary wheel hub are connected through a first deep groove ball bearing.

[0022] 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;

[0023] The hydraulic oil flow passage is communicated with the main clutch cylinder piston and the auxiliary clutch cylinder piston respectively.

[0024] 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;

[0025] 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;

[0026] 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.

[0027] 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;

[0028] 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;

[0029] 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.

[0030] 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;

[0031] 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;

[0032] The cooling oil is collected and falls into the oil guide wheel, and then flows out through the cooling oil outlet.

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

[0034] 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.

[0035] The auxiliary clutch flywheel disc is powered by a spline connection or a flexible disc.

[0036] The beneficial effects of the present invention are:

[0037] The wet three-acting clutch assembly proposed in the present application effectively solves the high-temperature ablation problem of the tractor clutch, prolongs 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, the clutch assembly solves the use requirements of existing multifunctional automatic transmissions for large and medium-sized tractors, filling the gap in multifunctional automatic transmissions for domestic tractors. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 is a first cross-sectional structural schematic diagram of the present invention in Example 1;

[0040] Figure 2 is a second cross-sectional structural schematic diagram of the present invention in Example 1;

[0041] Figure 3 is a schematic cross-sectional structural diagram of the present invention in Example 2;

[0042] Figure 4 It is a schematic diagram of the first cross-sectional structure of the present invention in Example 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 oil cylinder piston; 6 second O-ring; 7 middle fixed plate; 8 secondary clutch oil cylinder piston; 9 secondary clutch pressure plate; 10 secondary clutch outer ring; 11 steel plate; 12 paper base plate; 13 secondary clutch flywheel disc; 14 first nut; 15 secondary clutch cooling oil conduit; 16 first rivet; 17 spline shaft hole; 18 first deep groove ball bearing; 19 second deep groove ball bearing; 20 secondary disc hub; 21 second rivet; 22 secondary disc hub outer teeth; 23 first hexagon socket bolt; 24 third O-ring; 25 secondary clutch cooling oil fixed disc; 26 transmission plate; 27 first bolt seat; 28 first spring pad; 29 second hexagon socket Bolt; 30 Cylinder return spring; 31 Separation spring; 32 Fourth O-ring; 33 Third hexagon socket bolt; 34 Main clutch cooling oil cover; 35 Main disc hub outer teeth; 36 Main disc hub; 37 Hydraulic oil flow channel; 38 Fourth hexagon socket bolt; 39 Bearing sleeve; 40 Fifth hexagon socket bolt; 41 First throttle plug wire; 42 Second throttle plug wire; 43 Cooling oil flow channel; 44 Plug wire; 45 Sixth hexagon socket bolt; 46 Guide belt; 47 Second spring pad; 48 Seventh hexagon socket bolt; 49 Cooling oil inlet; 50 Oil guide wheel; 51 Shield; 52 Fifth O-ring; 53 Third rivet; 54 Second clutch flywheel plate gasket; 55 Eighth hexagon socket bolt; 56 Flexible disc; 57 Ninth hexagon socket bolt; 58 Hydraulic oil inlet and outlet. DETAILED DESCRIPTION

[0044] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0045] In the following description, specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in a variety of other ways than those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0046] Example 1

[0047] like Figure 1 and Figure 2 As shown, the wet three-acting clutch assembly in this embodiment includes a main clutch part and a secondary clutch part. During the operation of the main clutch part, the first travel shaft is driven to rotate; during the operation of the secondary clutch part, the second travel shaft is driven to rotate. At the same time, the secondary clutch part is also provided with a spline hole, and a spline shaft is provided in the spline hole, and the spline shaft is connected to the power output shaft. During the rotation of the secondary clutch part, the torque is transmitted to the power output shaft through the spline 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 fixed disc 7 is located between the main clutch part and the auxiliary clutch part, and plays the role of connecting the main clutch part and the auxiliary clutch part. Figure 2 As shown, the outer cylindrical end surface of the main clutch flywheel disc 1, the main clutch outer ring 3, the outer cylindrical part of the intermediate fixed disc 7, the auxiliary clutch outer ring 10, and the outer cylindrical end surface of the auxiliary clutch flywheel disc 13 are fixedly connected in sequence by the fifth hexagon socket bolt 40, thereby connecting the main clutch part and the auxiliary clutch part into an integral structure.

[0049] The axial side of the main clutch flywheel disc 1 away from the intermediate fixed disc is fixedly connected to the bearing sleeve 39 through the sixth hexagon socket bolt 45, and the oil pump is driven through the bearing sleeve 39. The axial side of the auxiliary clutch flywheel disc 1 away from the intermediate fixed disc is provided with a spline shaft, 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 the 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 cylindrical end surface 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 cylindrical end surface of the intermediate fixed disc 7. The first O-ring 2 and the second O-ring 6 both play a sealing role. The main clutch flywheel disc 1, the main clutch outer ring 3 and the intermediate fixed disc 7 form a closed chamber, and the main clutch oil cylinder piston 5 and the main clutch oil-resistant friction member combination are arranged in the chamber.

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

[0052] In the present application, the main clutch oil cylinder piston 5 and the main clutch oil-resistant friction component combination are not limited to the above structural relationship. 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 component combination is located between the push plate and the main clutch flywheel disc 1, or between the push plate and the intermediate fixed disc 7.

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

[0054] A hydraulic oil inlet and outlet 58 is provided at the annular inner wall of the main clutch flywheel disc 1, and correspondingly, mutually connected hydraulic oil flow channels 37 are provided in the main clutch flywheel disc 1, the main clutch outer ring 3 and the intermediate fixed disc 7, and the hydraulic oil inlet and outlet 58 is connected 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 oil cylinder piston 5 through the main clutch flywheel disc 1, the main clutch outer ring 3 and the hydraulic oil flow channel 37 in the intermediate fixed disc 7 in sequence, and the inflowing hydraulic oil causes the main clutch oil cylinder piston 5 to apply a pressing force to the main clutch oil-resistant friction component assembly.

[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 component combination. During the movement of the main clutch piston 5, the clamping force is applied to the main clutch oil-resistant friction component combination through the main clutch pressure plate 4. A cylinder return spring 30 is connected between the main clutch pressure plate 4 and the main clutch outer ring 3. During the process in which the main clutch cylinder piston 5 pushes the main clutch pressure plate 4 to move in the direction of the main clutch oil-resistant friction component combination, the cylinder return spring 30 is in a compressed state. When the hydraulic oil refluxes and the pressure of the hydraulic oil acting on the main clutch cylinder 5 is removed, the main clutch piston 5 and the main clutch pressure plate 4 can be automatically reset under the elastic force of the cylinder return spring 30.

[0056] The main clutch oil-resistant friction component assembly includes a plurality of steel sheets 11 and paper-based sheets 12 arranged at staggered intervals, and a paper-based sheet is arranged on one side or both sides of the steel sheet. A paper-based sheet is arranged between the main clutch oil-resistant friction component assembly and the main clutch pressure plate 4, and between the main clutch oil-resistant friction component assembly and the first clutch flywheel disc 1. In the present application, the steel sheets 11 and the paper-based sheets 12 are arranged at staggered intervals along the axial direction of the clutch assembly.

[0057] The outer edge of the steel sheet 11 is provided with external teeth, and the steel sheet is connected to the main clutch outer ring 3 through its external teeth. Therefore, the main clutch outer ring 3 drives the steel sheet 11 to rotate together during rotation, and the steel sheet 11 can also slide axially along the inner wall of the first clutch outer ring 3. A separation spring 31 is provided between the outer edges of two adjacent steel sheets. When the clutch is in a disengaged state, the separation spring 31 can ensure that the distance between the two adjacent steel sheets is the same, thereby preventing uneven spacing between the steel sheets.

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

[0059] A second deep groove ball bearing 19 is provided between the inner circumferential end surface of the intermediate fixed plate 7 and the main plate hub 36 , and the concentricity between the intermediate fixed plate 7 and the main plate hub 36 is ensured by the second deep groove ball bearing 19 .

[0060] The main clutch flywheel disc is provided with a cooling oil inlet 49, and the main clutch flywheel disc, the main clutch outer ring and the intermediate fixed disc are provided with cooling oil flow channels 43 that are connected in sequence. The cooling oil inlet 49 is connected with the cooling oil flow channel 43 in the main clutch flywheel disc, and a plugging wire 44 is provided at the cooling oil inlet 49. The cooling oil flow channel 43 is provided with two oil outlets so that the cooling oil in the cooling oil flow channel 43 can flow into the main clutch part and the auxiliary clutch part.

[0061] A main clutch cooling oil cover 34 is fixed on the axial side of the main clutch flywheel disc facing the middle fixed disc, and the main clutch cooling oil cover 34 is fixedly connected to the main clutch flywheel disc 1 through the third hexagon socket bolt 33. A cooling oil chamber is formed between the main clutch cooling oil cover 34 and the main clutch flywheel disc 1, and the cooling oil chamber is connected to one of the oil outlets, and the cooling oil in the cooling oil flow channel 43 can flow into the cooling oil chamber through the oil outlet. A second throttling plug 42 is provided at the oil outlet, and the cooling oil flowing into the main clutch part is throttled and depressurized by the second throttling plug. An oil outlet groove is provided on the side of the main clutch cooling oil cover 34 facing the main clutch oil-resistant friction parts combination, and the cooling oil flows into the main clutch oil-resistant friction parts combination through the oil outlet groove to cool the main clutch oil-resistant friction parts combination participating in the clutch action.

[0062] The hydraulic oil with oil pressure enters the hydraulic oil flow channel 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 to move in the direction of the main clutch oil-resistant friction parts combination by the pressure of the hydraulic oil. Therefore, the main clutch cylinder piston 5 presses the main clutch pressure plate 4 in the direction of the main clutch oil-resistant friction parts combination. The torque of the engine is transmitted to the main clutch oil-resistant friction parts combination through the main clutch flywheel 1 and the main clutch outer ring 3. The paper base sheet in the main clutch oil-resistant friction parts combination drives the first travel shaft to rotate through the main clutch disc hub. In the process of the main clutch oil-resistant friction parts combination being compressed, the cylinder return spring 30 and the separation spring 31 are squeezed to generate elastic force.

[0063] During the engagement process, the torque is actually transmitted by the friction between the paper substrate and the steel sheet. A large amount of heat is generated during the friction between the paper substrate and the steel sheet. The main clutch oil-resistant friction component combination is cooled by cooling oil. The cooling oil flows into the main clutch oil-resistant friction component 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 component combination can be taken away, thereby cooling the main clutch oil-resistant friction component combination.

[0064] When the main clutch part is in a disengaged state, the oil pressure of the hydraulic oil supplied to the main clutch becomes smaller, the cylinder return spring 30 and the separation spring 31 are reset, and under the return force of the cylinder return spring 30 and the separation spring 31, the main clutch cylinder piston 5 is pushed and moves in the opposite direction. At this time, the friction torque acting on the oil-resistant friction parts combination of the main clutch disappears, interrupting the power transmission.

[0065] In the auxiliary clutch part, a sealed chamber is formed between the auxiliary clutch flywheel disc 13, the auxiliary clutch outer ring 10 and the intermediate fixed disc 7, and the auxiliary clutch oil cylinder piston 8 and the auxiliary clutch oil-resistant friction component assembly are arranged in the sealed chamber. A spline hole is arranged 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 component assembly can be located between the auxiliary clutch oil cylinder piston 8 and the auxiliary clutch flywheel disc 13, in which case a groove is provided on the axial side of the intermediate fixed disc facing the auxiliary clutch flywheel disc 13, and the auxiliary clutch oil cylinder piston 8 is slidably disposed in the groove. The auxiliary clutch oil-resistant friction component assembly can also be located between the auxiliary clutch oil cylinder piston 8 and the intermediate fixed disc 7, in which case a groove is provided on the axial side of the auxiliary clutch flywheel disc 13 facing the intermediate fixed disc, and the auxiliary clutch oil cylinder piston 8 is slidably disposed in the groove.

[0067] In addition, the output end of the auxiliary clutch oil cylinder piston 8 can also be fixedly connected with a push plate, and the auxiliary clutch oil cylinder piston 8 is located between the push plate and the auxiliary clutch flywheel disc 13, or between the push plate and the intermediate fixed disc 7.

[0068] In this embodiment, a secondary clutch pressure plate 9 is provided between the secondary clutch oil cylinder piston 8 and the secondary clutch oil-resistant friction component assembly. During the movement of the secondary clutch oil cylinder piston 8, the secondary clutch pressure plate 9 transmits the thrust to the secondary clutch oil-resistant friction component assembly, thereby applying a squeezing force to the secondary clutch oil-resistant friction component assembly. The secondary clutch pressure plate 9 is connected to the secondary clutch outer ring 10 via a cylinder return spring 30.

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

[0070] Specifically, the inner edge of the paper base sheet 12 of the auxiliary clutch oil-resistant friction member assembly is provided with internal teeth, and the paper base sheet 12 is connected to the auxiliary hub outer teeth 22 through the internal teeth. The auxiliary hub 20 is arranged in the center hole of the auxiliary hub outer teeth 22, and the annular outer circle of the auxiliary hub 20 is fixedly connected to the auxiliary hub outer teeth 22 through the second rivet 21, and the annular inner wall of the auxiliary hub 20 is connected to the second travel shaft through a spline.

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

[0072] Several auxiliary clutch cooling oil conduits 15 are arranged at intervals on the axial side of the intermediate fixed plate 7 facing the auxiliary clutch flywheel plate, and the end of the auxiliary clutch cooling oil conduit 15 is fixedly connected to the intermediate fixed plate 7. The auxiliary clutch cooling oil conduit 15 is connected to one of the oil outlets on the cooling oil flow channel, and a first throttling plug 41 is provided at the oil inlet of the auxiliary clutch cooling oil conduit 15, and the cooling oil entering the auxiliary clutch part is throttled by the first throttling plug 41. The auxiliary clutch cooling oil conduit 15 is provided with an oil outlet groove on one side facing the auxiliary clutch oil-resistant friction component combination. After the cooling oil in the cooling oil flow channel flows into the auxiliary clutch cooling oil conduit 15, it flows into the auxiliary clutch oil-resistant friction component combination through the oil outlet groove. In the process of the cooling oil flowing in the auxiliary clutch oil-resistant friction component combination, the auxiliary clutch oil-resistant friction component combination is cooled.

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

[0074] The working principle of the auxiliary clutch part is the same as that of the main clutch part, so it will not be repeated here.

[0075] The intermediate fixed plate 7 is connected to the main clutch outer ring 3 and the auxiliary clutch outer ring 9 through the transmission plate 26, so that the main clutch outer ring 3 and the auxiliary clutch outer ring 9 can be driven to rotate during the rotation of the intermediate fixed plate 7. The axial sides of the intermediate fixed plate 7 are respectively connected to the transmission plates 26. Taking the transmission plate 26 arranged between the intermediate fixed plate 7 and the main clutch outer ring 3 as an example, the specific arrangement of the transmission plate 26 is specifically described.

[0076] The transmission plate 26 is in the shape of a long strip, one end of which is connected to the intermediate fixing plate 7, and the other end is connected to the main clutch outer ring 3, thereby realizing the connection between the intermediate fixing plate 7 and the main clutch outer ring 3. Specifically, one end of the transmission plate 26 is connected to the outer cylindrical end surface of one axial side of the intermediate fixing plate 7 through a second inner hexagonal bolt 29, the second inner hexagonal bolt 29 is arranged in the first bolt seat 27, and a first spring washer 28 is arranged between the second inner hexagonal bolt 29 and the first bolt seat 27. In this embodiment, the intermediate fixing plate 7 is connected to the transmission plates on both sides through a second inner hexagonal bolt 29. A through hole is arranged in the intermediate fixing plate 7, and the second inner hexagonal bolt 29 is arranged in the through hole.

[0077] The other end of the transmission plate 26 is fixedly connected to the outer cylindrical end surface of the main clutch outer ring 3 through the seventh inner hexagonal bolt 48. The seventh inner hexagonal bolt 48 is arranged in the second bolt seat, and a second spring washer 47 is arranged between the seventh inner hexagonal bolt 48 and the second bolt seat. Through the above connection method, it can ensure that the intermediate fixed plate 7 drives the main clutch outer ring 3 to rotate through the transmission plate 26, and will not affect the reciprocating movement of the main clutch outer ring 3.

[0078] During the operation of the wet three-action clutch assembly, the main clutch part can realize the movement of the tractor through the first travel shaft, and the auxiliary clutch part can realize the movement of the tractor through the second travel shaft. Through the main clutch part and the auxiliary clutch part, the power of the tractor automatic gear is not interrupted. During the rotation of the auxiliary clutch flywheel 13 in the clutch assembly, the spline shaft can be driven to rotate, and the spline shaft drives the external power input shaft to rotate, thereby completing the function of the tractor power output shaft.

[0079] Example 2

[0080] like Figure 3 As shown, in this embodiment, a shield 51 is provided on the annular outer side of the auxiliary clutch outer ring 10, the intermediate fixed plate 7, the main clutch outer ring 3 and the main clutch flywheel disc 1, and the outer cylindrical end surface of the shield 51 is fixedly connected to the auxiliary clutch flywheel disc 13 by an eighth inner hexagonal bolt 55, and an auxiliary clutch flywheel disc gasket 54 is provided between the shield 51 and the auxiliary clutch outer ring 10. A bearing sleeve 39 is provided in the center hole of the shield 51, and the outer cylindrical end surfaces of the shield 51 and the bearing sleeve 39 are 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 of the shield 51 and the outer circumferential wall of the adjacent auxiliary clutch outer ring 10, the intermediate fixed plate 7, and the main clutch outer ring 3, and an oil guide paddle is provided on the inner wall of the shield 51. There is also a gap between the axial inner wall of the shield 51 and the axial side wall of the adjacent main clutch flywheel 1, and an oil guide wheel 50 is provided in the gap. The oil guide wheel 50 is connected to the cooling oil outlet. A paddle is provided at the bearing sleeve near the cooling oil outlet, and the cooling oil at the oil guide wheel 50 is easily guided out through the paddle. Therefore, in this embodiment, the bearing sleeve can play the role of driving the oil pump and guiding the cooling oil.

[0082] The cooling oil flowing into the oil-resistant friction component assembly of the main clutch and the oil-resistant friction component assembly of the auxiliary clutch is continuously thrown into the inner wall of the shield 51 as the clutch assembly rotates, and the cooling oil is collected to the outer side of the oil guide wheel 50 by the oil guide paddle on the inner wall of the shield 51. The cooling oil is guided to the cooling oil outlet through the oil guide wheel 50 and discharged, and the discharged cooling oil can flow into the clutch assembly again, realizing the recycling of the cooling oil.

[0083] The rest is the same as in Example 1.

[0084] Example 3

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

[0086] The rest is the same as in Example 2.

[0087] In Embodiment 1, the clutch assembly is powered by spline connection, which can also be replaced by the flexible disk power drive in this embodiment.

[0088] The wet three-acting clutch assembly provided by the present invention is described in detail above. The principles and implementation methods of the present invention are described herein using specific examples. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention. The above description of the disclosed embodiments enables professionals and technicians in this field to implement or use the present invention. Various modifications to these embodiments will be obvious to professionals and technicians in this field, and the general principles defined in this article can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown in this article, but will conform to the widest scope consistent with the principles and novel features disclosed in this article.

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

2. The wet triple-acting clutch assembly according to claim 1, characterized in that: 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.

3. The wet triple-acting clutch assembly according to claim 2, characterized in that: 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 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.

4. The wet triple-acting clutch assembly according to claim 3, 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.

5. The wet triple-acting clutch assembly according to claim 3, characterized in that: The auxiliary clutch part also includes an auxiliary clutch oil cylinder piston, an auxiliary clutch flywheel disc, an auxiliary clutch outer ring and an intermediate fixed disc forming a closed chamber, and the auxiliary clutch oil cylinder piston and the auxiliary clutch oil-resistant friction parts combination are all arranged in the closed chamber; 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.

6. The wet triple-acting clutch assembly according to claim 5, 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.

7. The wet triple-acting clutch assembly according to claim 2, 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.

8. The wet triple-acting clutch assembly according to claim 2, 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.

9. The wet triple-acting clutch assembly according to claim 2, 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.

10. The wet triple-acting clutch assembly according to claim 2, 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.

11. The wet triple-acting clutch assembly according to claim 2 or 10, 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.

12. The wet triple-acting clutch assembly according to claim 2, characterized in that: The auxiliary clutch flywheel disc is powered by a spline connection or a flexible disc.

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