Clutch assembly and agricultural operation machine

Abstract

The clutch assembly comprises a transmission shaft, a clutch gear, a clutch hub gear and a friction assembly, the clutch gear is sleeved with the friction assembly, the clutch gear comprises a first tooth part, a friction tooth part and a connecting part, and the friction tooth part is provided with a groove structure. The clutch hub gear comprises a second tooth part, an extending part, a containing cavity and a limiting part, the limiting part is arranged in the containing cavity and relatively close to the second tooth part in the axial direction of the clutch hub gear, the friction tooth part is sleeved with the friction assembly, the friction assembly is arranged in the containing cavity, and at least part of the end, relatively close to the second tooth part, of the friction assembly makes contact with the limiting part; the friction assembly is limited to move in the axial direction. According to the clutch assembly and the agricultural operation machine, the problems that the limiting part is uneven in stress, prone to deformation and the like are solved, the service life of parts is prolonged, the service life of a clutch is prolonged, and the safety of the clutch is enhanced.

Description

Technical Field

[0001] The utility model relates to the field of agricultural machinery, in particular to a clutch assembly and an agricultural working machine. Background Art

[0002] In an agricultural working machine, in order to realize the walking of the working machine in multiple modes, it is necessary to cooperate with the clutch system of the gearbox to better meet different walking requirements. When operating such as steering, the cooperation of the clutch assembly is indispensable. Therefore, if the performance of the clutch assembly is enhanced, it will have a certain positive effect on the walking of the working machine. In the related clutch technology, problems such as uneven force and easy deformation of the structure are likely to occur in the clutch assembly, thus affecting the overall cooperation effect of the clutch system, which also has a certain impact on the service life and safety of the clutch.

[0003] Therefore, it is necessary to provide a clutch assembly and an agricultural working machine to overcome the defects existing above. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a clutch assembly and an agricultural working machine. Through the design of the clutch assembly, problems such as uneven force and easy deformation of key structures are improved, and at the same time, unnecessary wear is reduced, and the service life of parts is increased, thereby contributing to improving the service life of the clutch and enhancing the safety of the clutch.

[0005] According to one aspect of the utility model, a clutch assembly is provided, which includes a transmission shaft, a clutch gear sleeved on the transmission shaft, a clutch hub gear sleeved on the clutch gear, and a friction assembly placed between the clutch gear and the clutch hub gear along the radial direction of the transmission shaft, and the friction assembly is sleeved on the clutch gear.

[0006] The clutch gear includes a first tooth part, a friction tooth part, and a connecting part placed between the first tooth part and the friction tooth part, and the friction tooth part is provided with a groove structure.

[0007] The clutch hub gear includes a second tooth part, an extension part, a receiving cavity, and a limiting part. The extension part is connected to the second tooth part. An inner surface of the extension part is provided with the receiving cavity. The limiting part is placed in the receiving cavity and is relatively close to the second tooth part along the axial direction of the clutch hub gear, and the limiting part is a protrusion extending along the radial direction of the receiving cavity.

[0008] The friction assembly is sleeved on the friction tooth part and placed in the receiving cavity. At least a part of one end of the friction assembly relatively close to the second tooth part is in contact with the limiting part to limit the axial movement of the friction assembly.

[0009] This application increases the force-bearing area of the limiting part of the friction assembly, improves problems such as uneven force on the limiting part and easy deformation, increases the service life of the components, thereby helping to improve the service life of the clutch and enhance the safety of the clutch.

[0010] Preferably, the limiting part includes at least two annular protrusions arranged at intervals. This application helps to limit the friction assembly and prevent problems such as uneven force and easy deformation of parts.

[0011] Preferably, the limiting part includes four annular protrusions arranged at intervals.

[0012] Preferably, the limiting part includes a limiting surface facing the friction assembly. The limiting surface is at least partially in contact with the friction assembly, and the contact area between the limiting surface and the friction assembly in the radial direction is larger than the non-contact area between the limiting surface and the friction assembly in the radial direction.

[0013] Preferably, the inner wall of the accommodating cavity further includes a circlip groove, and the position of the circlip groove is relatively far from the second tooth part.

[0014] Preferably, the clutch assembly further includes a limiting component arranged at the other end of the friction assembly relatively far from the second tooth part, and the limiting component is used to limit the axial movement of the friction assembly.

[0015] Preferably, the limiting component includes a retaining ring. The retaining ring is sleeved on the friction tooth part and arranged in the groove structure, and at least part of one end of the retaining ring relatively close to the second tooth part is in contact with the friction assembly. When the shift fork moves, the retaining ring is synchronously stressed and moves to drive the clutch gear to move.

[0016] Preferably, the limiting component further includes a bearing. The bearing is sleeved on the friction tooth part and arranged on the side of the retaining ring relatively far from the second tooth part, and the bearing is at least partially in contact with the retaining ring. Prevent the contact between the end faces of the pressure plate and the clutch gear, which helps to reduce wear. Further, the bearing can be a thrust cylindrical roller bearing. Prevent the contact between the end faces of the pressure plate and the clutch gear, which helps to reduce wear.

[0017] The clutch gear can be moved along the axis to the friction component side by the limit assembly. The limit assembly can be set as a shoulder structure placed on the clutch gear and integrated with the clutch gear. Since the clutch gear is a moving part, the clutch gear is still in a rotating state when it moves. The shift fork moves the slider to push the shoulder to move. The shoulder contacts the pressure plate to compress the friction component. There is a certain friction between the shoulder and the slider, and between the shoulder and the pressure plate, which causes great wear and affects the service life of the parts. The limit assembly can also be set as a retaining ring and a bearing. The shift fork moves the slider to move the bearing and the retaining ring. Although the clutch gear is in a rotating state when it moves, one end of the bearing contacts the slider and the other end of the bearing contacts the retaining ring. The retaining ring contacts the pressure plate to compress the friction component. At this time, the rotating clutch component avoids friction with the slider and the pressure plate through the bearing, thereby effectively realizing the movement of the clutch gear while improving the service life of the parts.

[0018] Preferably, the clutch assembly further comprises a slider, the slider is disposed at the connection portion and at least partially contacts the bearing, and the slider comprises a first slider and a second slider. The present application helps to reduce the friction between the slider and the clutch gear, avoids excessive wear on the slider, and thus helps to increase the service life of the slider.

[0019] Preferably, the clutch assembly further comprises a shift fork connected to the slider, and the slider can move along the transmission shaft direction along with the shift fork.

[0020] Preferably, the friction assembly includes a thick partition, a pressure plate, a friction plate disposed between the thick partition and the pressure plate, and a partition disposed between the thick partition and the pressure plate, the thick partition is at least partially in contact with the limit portion, and the pressure plate is at least partially in contact with the retaining ring.

[0021] Preferably, the number of friction plates is at least eight, and the number of partition plates is one less than the number of the plurality of friction plates. The clutch operation performance is improved.

[0022] Preferably, each separator is disposed between two adjacent friction plates.

[0023] Preferably, the number of friction plates is nine.

[0024] Preferably, the clutch assembly further comprises a transmission gear sleeved on the transmission shaft to drive the transmission shaft to rotate.

[0025] Preferably, the clutch assembly includes a first clutch assembly and a second clutch assembly arranged on both sides of the transmission gear. The first clutch assembly and the second clutch assembly can respectively realize the clutch system operation on the left side and the right side of the working machine.

[0026] Preferably, the first tooth portion is provided with a first tooth embedding portion, and the first tooth embedding portion comprises a first tooth embedding protrusion and a first tooth embedding recess.

[0027] Preferably, second dog clutch parts are arranged at both end parts on two sides of the transmission gear, and each second dog clutch part includes a second dog clutch protruding part and a second dog clutch concave part.

[0028] Preferably, one side of the clutch gear and the transmission gear are connected through the first dog clutch part and the second dog clutch part, the first dog clutch protruding part is placed inside the second dog clutch concave part, and the second dog clutch protruding part is placed inside the first dog clutch concave part.

[0029] Preferably, the clutch gear can move along the axial direction of the transmission shaft, and the fork drives the sliding block to move along the direction of the transmission shaft towards the friction assembly side, thereby driving the clutch gear to move along the direction of the transmission shaft towards the friction assembly side.

[0030] Preferably, the clutch assembly further includes a snap ring, and the snap ring is placed inside the snap ring groove to limit the friction plate.

[0031] Preferably, the clutch assembly further includes a spring sleeved on the transmission shaft and placed inside the clutch gear.

[0032] Preferably, a gearbox includes the clutch assembly of the above solution.

[0033] Preferably, the utility model provides an agricultural operation machine, which includes a cab, traveling tracks, working tools, and a clutch assembly of the above solution.

[0034] A clutch assembly and an agricultural operation machine provided by the utility model include a clutch gear, a clutch hub gear, and a friction assembly. The clutch hub gear includes a limiting part, and the friction assembly is limited through the limiting part, the stress area of the limiting part is increased, the deformation of parts is reduced, and through the design of the clutch assembly, problems such as uneven stress and easy deformation of key structures are improved, the service life of parts is increased, thereby contributing to improving the service life of the clutch and enhancing the safety of the clutch. Description of the Drawings

[0035] The following further describes the utility model in detail with reference to the drawings and specific embodiments:

[0036] Figure 1 is a sectional view of the clutch assembly;

[0037] Figure 2 is Figure 1 a partial enlarged view of position A in

[0038] Figure 3 is a partial exploded view of the clutch assembly;

[0039] Figure 4 is a schematic diagram of the clutch gear;

[0040] Figure 5 is a schematic diagram of the clutch hub gear;

[0041] Figure 6 Front view of the clutch hub gear;

[0042] Figure 7 Cross-sectional view of the clutch hub gear along the C perspective;

[0043] Figure 8 For Figure 3 Partial enlarged view of position B in

[0044] Figure 9 Partial schematic diagram of the transmission;

[0045] Figure 10 Schematic diagram of an agricultural operation machine.

[0046] Explanation of the reference numerals in the drawings:

[0047] 10. Clutch assembly; 101. Clutch hub gear; 102. Clutch gear; 103. Friction assembly; 103a. Thick partition; 103b. Friction plate; 103c. Partition; 103d. Pressure plate; 104. Spring; 105. Limit assembly; 105a. Retaining ring; 105b. Bearing; 106. Slide block; 106a. First slide block; 106b. Second slide block; 107. Fork; 108. Snap ring; 109. Transmission shaft; 110. Transmission gear; 1011. Second tooth part; 1012. Extension part; 1013. Limit part; 1014. Accommodation cavity; 1012b. Snap ring groove; 1021. First tooth part; 1022. Friction tooth part; 1023. Connection part; 1024. Groove; 100. Transmission; 200. Operation machine; P1. First spline projection; Q1. First spline recess; P2. Second spline projection; Q2. Second spline recess; 1. Cab; 2. Traveling track; 3. Working implement. Detailed implementation manners

[0048] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0049] To make the drawings concise, only the parts related to the present invention are schematically shown in each drawing, and they do not represent the actual structure of the product. In addition, to make the drawings concise and easy to understand, in some drawings, parts with the same structure or function are only schematically shown for one of them, or only one of them is marked. In this article, "one" not only means "only this one", but also means "more than one" situation.

[0050] It should also be further understood that the term "and / or" used in the description of the present application and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0051] In this text, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0052] In addition, in the description of the present application, the terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0053] To more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will describe the specific embodiments of the present utility model with reference to the accompanying drawings. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings, and other embodiments can also be obtained.

[0054] See Figures 1 to 7 As shown, this embodiment provides a clutch assembly 10, including a transmission shaft 109, a clutch gear 102 sleeved on the transmission shaft 109, a clutch hub gear 101 sleeved on the clutch gear 102, and a friction assembly 103 placed between the clutch gear 102 and the clutch hub gear 101 in the radial direction of the transmission shaft 109. The friction assembly 103 is sleeved on the clutch gear 102.

[0055] The clutch gear 102 includes a first tooth portion 1021, a friction tooth portion 1022, and a connecting portion 1023 between the first tooth portion 1021 and the friction tooth portion 1022. The friction tooth portion 1022 is provided with a groove 1024 structure.

[0056] The clutch hub gear 101 includes a second tooth portion 1011, an extension portion 1012, a receiving cavity 1014, and a limiting portion 1013. The extension portion 1012 is connected to the second tooth portion 1011. The inner surface of the extension portion 1012 is provided with the receiving cavity 1014. The limiting portion 1013 is placed in the receiving cavity 1014 and is relatively close to the second tooth portion 1011 in the axial direction of the clutch hub gear 101. The limiting portion 1013 is a protrusion extending in the radial direction of the receiving cavity 1014.

[0057] The friction assembly 103 is sleeved on the friction tooth portion 1022 and placed in the accommodation cavity 1014. At least a part of one end of the friction assembly 103 relatively close to the second tooth portion 1011 is in contact with the limiting portion 1013 to limit the axial movement of the friction assembly 103.

[0058] In this application, the force-bearing area of the limiting portion 1013 on the friction assembly 103 is increased, problems such as uneven force on the limiting portion 1013 and easy deformation are improved, the service life of the parts is increased, which helps to improve the service life of the clutch and enhance the safety of the clutch.

[0059] The limiting portion 1013 includes at least two annular protrusions arranged at intervals. This application helps to realize the limitation of the friction assembly 103 and prevent problems such as uneven force and easy deformation of parts.

[0060] The limiting portion 1013 includes four annular protrusions arranged at intervals. The limiting portion 1013 further includes a limiting surface facing the friction assembly 103. The limiting surface is at least partially in contact with the friction assembly 103, and the contact area of the limiting surface with the friction assembly 103 in the radial direction is larger than the non-contact area of the limiting surface with the friction assembly 103 in the radial direction.

[0061] The inner wall of the accommodation cavity 1014 further includes a snap ring groove 1012b, and the snap ring groove 1012b is relatively far from the second tooth portion 1011.

[0062] The clutch assembly 10 further includes a limiting component 105 placed at the other end of the friction assembly 103 relatively far from the second tooth portion 1011, and the limiting component 105 is used to limit the axial movement of the friction assembly 103.

[0063] The movement of the clutch gear 102 along the axial direction towards the friction assembly 103 can be achieved through the limit assembly 105. The limit assembly 105 can be a shoulder structure that is set on and integrated with the clutch gear 102. Since the clutch gear 102 is a moving part and is still in a rotating state when it moves, the fork 107 toggles the slider 106 to push the shoulder to move. When the shoulder contacts the pressure plate 103d to compress the friction assembly 103, there is a certain amount of friction between the shoulder and the slider 106, as well as between the shoulder and the pressure plate 103d, which causes significant wear and affects the service life of the parts. The limit assembly 105 can also be set as a retaining ring 105a and a bearing 105b. Then, the fork 107 toggles the slider 106 to move the bearing 105b and the retaining ring 105a. Although the clutch gear 102 is in a rotating state when it moves, at this time, one end of the bearing 105b contacts the slider 106, the other end of the bearing 105b contacts the retaining ring 105a, and the retaining ring 105a contacts the pressure plate 103d to compress the friction assembly 103. Then, the rotating clutch assembly 10 avoids friction with the slider 106 and the pressure plate 103d through the bearing 105b. Therefore, while effectively realizing the movement of the clutch gear 102, the service life of the parts is improved.

[0064] In this embodiment, the limit assembly 105 is set as a retaining ring 105a and a bearing 105b.

[0065] The retaining ring 105a is sleeved on the friction tooth part 1022 and is placed in the groove 1024 structure. At least part of the end of the retaining ring 105a relatively close to the second tooth part 1011 contacts the friction assembly 103. When moving through the fork 107, the retaining ring 105a is synchronously moved under force to drive the clutch gear 102 to move.

[0066] The bearing 105b is sleeved on the friction tooth part 1022 and is placed on the side of the retaining ring 105a relatively far from the second tooth part 1011. The bearing 105b is at least partially in contact with the retaining ring 105a. It prevents contact between the end face of the pressure plate 103d and the clutch gear 102, which helps to reduce wear. Further, the bearing 105b can be a thrust cylindrical roller bearing 105b. It prevents contact between the end face of the pressure plate 103d and the clutch gear 102, which helps to reduce wear.

[0067] The clutch assembly 10 further includes a slider 106 and a fork 107. The slider 106 is placed on the connecting part 1023 and at least partially contacts the bearing 105b. The slider 106 includes a first slider 106a and a second slider 106b. The fork 107 is partially sleeved outside the slider 106 and is connected to the slider 106 to drive the slider 106 to move synchronously along the axis. This application helps to reduce the friction force between the slider 106 and the clutch gear 102, avoid excessive wear on the slider 106, and thus helps to improve the service life of the slider 106.

[0068] The clutch assembly 10 further includes a snap ring 108, which is placed in the snap ring groove 1012b to limit the friction plate 103b.

[0069] The clutch assembly 10 further includes a spring 104 sleeved on the transmission shaft 109 and placed inside the clutch gear 102.

[0070] The friction assembly 103 includes a thick partition 103a, a pressure plate 103d, a friction plate 103b placed between the thick partition 103a and the pressure plate 103d, and a partition 103c placed between the thick partition 103a and the pressure plate 103d. The thick partition 103a is at least partially in contact with the limiting portion 1013, and the pressure plate 103d is at least partially in contact with the snap ring 105a.

[0071] The number of the friction plates 103b is nine, and the number of the partitions 103c is eight. The friction plates 103b and the partitions 103c are arranged at intervals.

[0072] See Figure 8 As shown, the clutch assembly 10 further includes a transmission gear 110 sleeved on the transmission shaft 109 to drive the transmission shaft 109 to rotate.

[0073] The clutch assembly 10 includes a first clutch assembly 10 and a second clutch assembly 10 arranged on both sides of the transmission gear 110. Through the first clutch assembly 10 and the second clutch assembly 10, the clutch systems on the left and right sides of the working machine 200 can be respectively realized to work.

[0074] The first tooth portion 1021 is provided with a first jaw portion, and the first jaw portion includes a first jaw protrusion P1 and a first jaw recess Q1.

[0075] Both ends of the transmission gear 110 are provided with second jaw portions, and the second jaw portions include a second jaw protrusion P2 and a second jaw recess Q2.

[0076] One side of the clutch gear 102 and the transmission gear 110 are connected through the first jaw portion and the second jaw portion. The first jaw protrusion P1 is placed inside the second jaw recess Q2, and the second jaw protrusion P2 is placed inside the first jaw recess Q1.

[0077] The clutch gear 102 can move axially along the transmission shaft 109. The fork 107 drives the slider 106 to move along the transmission shaft 109 towards the friction assembly 103 side, thereby driving the clutch gear 102 to move along the transmission shaft 109 towards the friction assembly 103 side.

[0078] See Figure 9 As shown, this embodiment provides a transmission 100, which includes the clutch assembly 10 of the above solution.

[0079] See Figure 10As shown in the figure, this embodiment provides an agricultural operation machine 200, which includes a cab 1, a traveling track 2, a working implement 3, and a clutch assembly 10 of the above solution.

[0080] It will be apparent to those skilled in the art that various modifications and variations can be made to the above exemplary embodiments of the present invention without departing from the spirit and scope of the present invention. Therefore, it is intended that the present invention cover modifications and variations of the present invention that fall within the scope of the appended claims and their equivalent technical solutions.

Claims

1. A clutch assembly, characterized in that, Comprising: A drive shaft, a clutch gear sleeved on the drive shaft, a clutch hub gear sleeved on the clutch gear, and a friction assembly disposed between the clutch gear and the clutch hub gear in the radial direction of the drive shaft, the friction assembly being sleeved on the clutch gear; The clutch gear includes a first tooth portion, a friction tooth portion, and a connecting portion disposed between the first tooth portion and the friction tooth portion, and the friction tooth portion is provided with a groove structure; The clutch hub gear includes a second tooth portion, an extension portion, a receiving cavity, and a limiting portion. The extension portion is connected to the second tooth portion. The inner surface of the extension portion is provided with a receiving cavity. The limiting portion is disposed in the receiving cavity and relatively close to the second tooth portion in the axial direction of the clutch hub gear. The limiting portion is a protrusion extending in the radial direction of the receiving cavity; The friction assembly is sleeved on the friction tooth portion and disposed in the receiving cavity. At least a part of one end of the friction assembly relatively close to the second tooth portion is in contact with the limiting portion to limit the axial movement of the friction assembly.

2. The clutch assembly according to claim 1, wherein: The limiting portion includes at least two annular protrusions spaced apart.

3. A clutch assembly according to claim 2, characterized in that: The clutch assembly further includes a limiting assembly disposed at the other end of the friction assembly relatively far from the second tooth portion, and the limiting assembly is used to limit the axial movement of the friction assembly.

4. A clutch assembly according to claim 3, wherein: The limiting assembly includes a retaining ring, the retaining ring is sleeved on the friction tooth portion and disposed in the groove structure, and at least a part of one end of the retaining ring relatively close to the second tooth portion is in contact with the friction assembly.

5. The clutch assembly according to claim 4, characterized in that: The limiting assembly further includes a bearing, the bearing is sleeved on the friction tooth portion and disposed on the side of the retaining ring relatively far from the second tooth portion, and the bearing is at least partially in contact with the retaining ring.

6. A clutch assembly as claimed in claim 5, characterized in that: The clutch assembly further includes a slider, the slider is disposed on the connecting portion and at least partially in contact with the bearing, and the slider includes a first slider and a second slider.

7. The clutch assembly according to claim 6, characterized in that: The clutch assembly further includes a fork connected to the slider, and the slider can move along the drive shaft direction with the fork.

8. A clutch assembly according to claim 7, characterized in that: The friction assembly includes a thick partition plate, a pressure plate, a friction plate disposed between the thick partition plate and the pressure plate, and a partition plate disposed between the thick partition plate and the pressure plate. At least a part of the thick partition plate is in contact with the limiting portion, and at least a part of the pressure plate is in contact with the retaining ring.

9. A clutch assembly according to claim 8, characterized in that: The clutch assembly further includes a transmission gear sleeved on the drive shaft to drive the drive shaft to rotate.

10. An agricultural working machine, characterized in that, Comprising the clutch assembly according to claim 1 or claim 9.

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