Power assembly and motorcycle adopting same

Abstract

The invention provides a power assembly which comprises an engine, a transmission and a clutch, and the clutch is arranged between the engine and the transmission. The clutch comprises a pressing plate assembly, a friction plate assembly and a pressing disc assembly. The pressing plate assembly and the pressing disc assembly are arranged on the two sides of the friction plate assembly respectively. The clutch further comprises a slide way and a centrifugal part. The centrifugal part has a first state and a second state on the slide way. When the rotating speed of the engine is lower than the preset rotating speed, the centrifugal part is in the first state, and the pressing plate assembly is separated from the friction plate assembly; when the rotating speed of the engine is higher than the preset rotating speed, the centrifugal part is in the second state, and the pressing plate assembly and the friction plate assembly are pressed tightly. The invention further provides a motorcycle. The motorcycle comprises the power assembly. Through the arrangement, when the rotating speed of the engine is lower than the preset rotating speed, the clutch automatically cuts off power transmission, and driving is more convenient.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular, to a power assembly and a motorcycle using the power assembly. Background Art

[0002] The powertrain of a motorcycle is a device that generates and transmits power. The powertrain usually includes an engine, a gearbox and a clutch. The clutch is a device arranged between the engine and the gearbox. Its main function is to transmit or cut off the power of the engine. The purpose of transmitting power is to make the motorcycle move forward, and the purpose of cutting off power is usually to facilitate gear shifting. In the related structure of the clutch, the driver needs to operate the clutch when starting and stopping, that is, when starting or stopping, the accelerator and the clutch need to be operated at the same time, which is complicated to operate. Summary of the invention

[0003] In order to solve the above problems, the present application provides a motorcycle with a convenient power assembly operation.

[0004] In order to achieve the above objectives, this application adopts the following technical solutions:

[0005] A power assembly comprises: an engine, which is used to provide power; a transmission, which is transmission-connected to the engine; a clutch, which is arranged between the engine and the transmission; the clutch comprises a center sleeve, a friction plate assembly and a pressure plate assembly, and the friction plate assembly is sleeved outside the center sleeve; the pressure plate assembly is arranged on one side of the friction plate assembly; wherein the clutch also comprises a slideway, a centrifugal member and a pressure plate assembly, the pressure plate assembly is arranged on one side of the centrifugal member, the slideway is arranged on the side of the centrifugal member away from the pressure plate assembly, and the centrifugal member is at least partially arranged in the slideway; the pressure plate assembly comprises a first elastic member and a pressure plate, the first elastic member abuts against one side of the pressure plate, and the centrifugal member abuts against the other side of the pressure plate, the force exerted by the centrifugal member on the pressure plate is opposite to the direction of the force exerted by the first elastic member on the pressure plate, and the pressure plate is pressed or separated from the friction plate assembly under the action of the centrifugal member and the first elastic member.

[0006] Furthermore, the clutch comprises an outer cover, the outer cover comprises a receiving portion, the receiving portion is arranged on a side of the outer cover close to the pressure plate assembly, the slideway is arranged on the receiving portion, and the centrifugal member slides in the slideway.

[0007] Furthermore, the slide includes a first limiting portion and a second limiting portion. When the engine speed is lower than a preset speed, the centrifugal component is in the first limiting portion; when the engine speed is higher than the preset speed, the centrifugal component is in the second limiting portion.

[0008] Furthermore, the pressure plate assembly is provided with a pressure plate, a second elastic member and a second fixing member, the second fixing member connects the pressure plate to the center sleeve, the second elastic member is at least partially arranged between the second fixing member and the pressure plate, and the second elastic member abuts against the pressure plate.

[0009] Furthermore, it is characterized in that the centrifugal component is configured as a centrifugal bead, and the centrifugal component is configured as a metal material.

[0010] The present application also provides a power assembly, including: an engine, the engine is used to provide power; a transmission, the transmission is connected to the engine; a clutch, the clutch is arranged between the engine and the transmission; the clutch includes a center sleeve, a friction plate assembly and a pressure plate assembly, the friction plate assembly is sleeved outside the center sleeve; the pressure plate assembly is arranged on one side of the friction plate assembly; wherein the clutch also includes a slideway, a centrifugal member and a pressure plate assembly, the centrifugal member has a first state and a second state on the slideway, and the pressure plate assembly and the friction plate assembly have two states of compression and separation; when the engine speed is lower than the preset speed, the centrifugal member is in the first state, and the pressure plate assembly and the friction plate assembly are separated; when the engine speed is higher than the preset speed, the centrifugal member is in the second state, and the pressure plate assembly and the friction plate assembly are compressed; the preset speed can be set to be greater than or equal to 1500rpm and less than or equal to 3000rpm.

[0011] Furthermore, the pressure plate assembly and the pressure plate assembly are respectively arranged on both sides of the friction plate assembly, the pressure plate assembly is provided with a pressure plate, a second elastic member and a second fixing member, the second fixing member connects the pressure plate to the center sleeve, the second elastic member is at least partially arranged between the second fixing member and the pressure plate, the second elastic member abuts against the pressure plate, and the clutch also includes a pull rod assembly, the pull rod assembly is at least partially connected to the pressure plate assembly, and the pressure plate is pressed or separated from the friction plate assembly under the action of the pull rod assembly.

[0012] Furthermore, the outer cover includes a accommodating portion, the centrifugal member is at least partially within the accommodating portion, the accommodating portion includes a plurality of slideways, the centrifugal member is configured as a plurality of centrifugal beads, the slideways have a certain slope, the slideways include a first limiting portion and a second limiting portion, and the centrifugal beads slide between the first limiting portion and the second limiting portion.

[0013] Furthermore, the friction plate assembly includes multiple connecting plates and multiple friction plates. The friction plates and the connecting plates are arranged at intervals. The left and right sides of the friction plate assembly are both arranged as friction plates. The inner circle of the connecting plate abuts against the outer circle of the center sleeve, and the outer circle of the friction plate abuts against the inner circle of the outer cover.

[0014] The present application also provides a motorcycle, comprising: a frame; a running assembly, the running assembly being transmission-connected to the frame; a powertrain, the powertrain being at least partially disposed on the frame; and a body covering, the body covering at least partially covering the powertrain; wherein the motorcycle comprises the powertrain as described above.

[0015] The motorcycle provided by the present application has a clutch with two states of compression and separation by setting a pressure plate assembly and a friction plate assembly; when the engine speed is lower than a preset speed, the centrifugal member is in the first state, the pressure plate assembly and the friction plate assembly are separated, and the clutch does not transmit power; when the engine speed is higher than the preset speed, the centrifugal member is in the second state, the pressure plate assembly and the friction plate assembly are compressed, and the friction plate transmits power. Through the above arrangement, when the engine speed is lower than the preset speed, the clutch automatically cuts off the power transmission, and the driver does not need to operate the clutch, which is convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope.

[0017] Figure 1 A schematic diagram of the structure of the motorcycle of the present application;

[0018] Figure 2 This is a schematic diagram of the structure of the powertrain of this application.

[0019] Figure 3 This is a schematic diagram of the structure of the clutch of the present application;

[0020] Figure 4 An exploded view of the clutch of the present application;

[0021] Figure 5 This is a connection schematic diagram of the centrifugal member of the present application in a first state;

[0022] Figure 6 This is a connection schematic diagram of the centrifugal component of the present application in the second state. DETAILED DESCRIPTION

[0023] In order to make the technical scheme of the present application better understood by the persons skilled in the art, the technical scheme in the specific implementation mode of the present application will be described clearly and completely below in conjunction with the drawings in the implementation mode of the present application. It should be understood that, for the ordinary technicians in the field, the above description can be improved or changed, and all these improvements and changes should belong to the protection scope of the claims attached to the present application.

[0024] like Figure 1 and Figure 2As shown, the present application provides a powertrain 100 including an engine 11, a clutch 12 and a transmission 13. The engine 11 provides driving force; the transmission 13 is used to change the transmission ratio so that the engine 11 is suitable for different working scenarios; the clutch 12 connects the engine 11 and the transmission 13 to transmit or cut off the power of the engine 11, facilitating the operation of speed change and gear shifting. In order to clearly illustrate the technical solution of the present application, the following definitions are also provided: Figure 1 Front, back, top and bottom sides shown.

[0025] like Figures 2 to 4 As shown, the clutch 12 includes a center sleeve 121, a friction plate assembly 122 and an outer cover 123. The friction plate assembly 122 is respectively connected to the center sleeve 121 and the outer cover 123, and the friction plate assembly 122 is used to transmit power between the center sleeve 121 and the outer cover 123. The center sleeve 121 assembly is connected to the transmission 13, and the outer cover 123 is connected to the engine 11. The friction plate assembly 122 can transmit or cut off the power between the engine 11 and the transmission 13.

[0026] As an optional embodiment, the clutch 12 further includes a pressure plate assembly 124 and a pressure plate assembly 125. The pressure plate assembly 124 and the pressure plate assembly 125 are respectively arranged on opposite sides of the friction plate assembly 122, and can be used to compress the friction plate assembly 122. The friction plate assembly 122 itself includes a transmission state and a disconnection state. When the pressure plate assembly 125 and the pressure plate assembly 124 simultaneously compress the friction plate assembly 122, the friction plate assembly 122 is in the transmission state, and the clutch 12 transmits power between the engine 11 and the transmission 13; when the pressure plate assembly 125 and / or the pressure plate assembly 124 are separated from the friction plate assembly 122, the friction plate assembly 122 is in the disconnection state, and the clutch 12 does not transmit power between the engine 11 and the transmission 13.

[0027] like Figure 3 to Figure 4As shown, the clutch 12 further includes a pull rod assembly 126, which is at least partially disposed on the pressure plate assembly 125 and can control the compression or separation between the pressure plate assembly 125 and the friction plate assembly 122. The pressure plate assembly 124 is disposed on a side of the friction plate assembly 122 away from the pressure plate assembly 125, and the outer cover 123 is at least partially disposed on a side of the pressure plate assembly 124 away from the friction plate assembly 122. The clutch 12 further includes a centrifugal member 127 and a slideway 128, and the centrifugal member 127 is disposed between the slideway 128 and the pressure plate assembly 124. The centrifugal member 127 is at least partially disposed in the slideway 128. The centrifugal member 127 can control the compression or separation between the pressure plate assembly 124 and the friction plate assembly 122. The centrifugal member 127 has a first state and a second state. When the speed of the engine 11 is lower than the preset speed, the centrifugal member 127 is in the first state, and the pressure plate assembly 124 is separated from the friction plate assembly 122; when the speed of the engine 11 is higher than the preset speed, the centrifugal member 127 is in the second state, and the pressure plate assembly 124 abuts against the friction plate assembly 122 under the action of the centrifugal member 127, and the pressure plate assembly 124 and the friction plate assembly 122 are pressed tightly. When the pressure plate assembly 125 and the pressure plate assembly 124 simultaneously press the friction plate assembly 122, the friction plate assembly 122 is in the transmission state, and the friction plate assembly 122 can transmit power; when the pressure plate assembly 125 and / or the pressure plate assembly 124 are separated from the friction plate assembly 122, the friction plate assembly 122 is in the disconnection state, and the friction plate assembly 122 cannot transmit power.

[0028] like Figure 4As shown, the friction plate assembly 122 includes a plurality of friction plates 1221 and a plurality of connecting plates 1222. The friction plates 1221 and the connecting plates 1222 are arranged at intervals, and the left and right sides of the friction plate assembly 122 are both arranged with friction plates 1221. The friction plate assembly 122 is sleeved on the outside of the center sleeve 121, and the outer cover 123 is at least partially sleeved on the outside of the friction plate assembly 122. The inner ring of the connecting plate 1222 abuts against the outer ring of the center sleeve 121, and the center sleeve 121 and the connecting plate 1222 can rotate synchronously. The outer ring of the friction plate 1221 abuts against the inner ring of the outer cover 123, and the friction plate 1221 and the outer cover 123 can rotate synchronously. The outer cover 123 is connected to the engine 11, and the center sleeve 121 is connected to the gearbox. When the pressure plate assembly 125 and the pressure plate assembly 124 simultaneously press the friction plate assembly 122, the friction plate 1221 and the connecting plate 1222 are pressed, the friction plate assembly 122 is in a transmission state, the friction plate 1221 and the connecting plate 1222 rotate synchronously, and power can be transmitted between them, that is, power can be transmitted between the engine 11 and the gearbox; when the pressure plate assembly 125 and / or the pressure plate assembly 124 are separated from the friction plate assembly 122, the friction plate 1221 and the connecting plate 1222 are not pressed, the friction plate assembly 122 is in a disconnected state, the friction plate 1221 and the connecting plate 1222 cannot rotate synchronously, and power cannot be completely transmitted between them, that is, power cannot be transmitted between the engine 11 and the gearbox.

[0029] like Figure 4 As shown, the centrifuge 12 has a first installation direction X and a second installation direction Y, and the first installation direction X and the second installation direction Y are opposite. The pressing plate assembly 124 includes a pressing plate 1241, a first fixing member 1242 and a first elastic member 1243. Along the second installation direction Y, the first fixing member 1242, the first elastic member 1243, the pressing plate 1241, the centrifugal member 127 and the outer cover 123 are arranged in sequence. The first fixing member 1242 sets the pressing plate 1241 on the outer cover 123, the first elastic member 1243 is at least partially arranged between the first fixing member 1242 and the pressing plate 1241, and the first elastic member 1243 abuts against the pressing plate 1241. The pressure plate 1241 moves back and forth within a preset distance under the action of the first elastic member 1243 and the centrifugal member 127. The pressure plate 1241 can be separated from the friction plate assembly 122 under the action of the first elastic member 1243. The pressure plate 1241 can overcome the force of the first elastic member 1243 under the action of the centrifugal member 127. At this time, the pressure plate 1241 and the friction plate assembly 122 are pressed tightly.

[0030] As an optional embodiment, the pressure plate assembly 125 includes a pressure plate 1251, a second fixing member 1252 and a second elastic member 1253. The pressure plate 1251, the second elastic member 1253 and the second fixing member 1252 are arranged in sequence along the first installation direction X. The pressure plate 1251 is at least partially arranged through the tie rod assembly 126. The second fixing member 1252 sets the pressure plate 1251 on the center sleeve 121, the second elastic member 1253 is at least partially arranged between the second fixing member 1252 and the pressure plate 1251, and the second elastic member 1253 abuts against the pressure plate 1251. The pressure plate 1251 can move back and forth within a preset distance under the action of the tie rod assembly 126 and the second elastic member 1253. When the tie rod assembly 126 is not operated, the pressure plate 1251 is pressed against the friction plate assembly 122; when the tie rod assembly 126 is operated, the pressure plate 1241 can be separated from the friction plate assembly 122 under the action of the tie rod assembly 126.

[0031] like Figures 4 to 6 As shown, the outer cover 123 includes a receiving portion 1231, the centrifugal member 127 is at least partially arranged in the receiving portion and abuts against the receiving portion 1231, a plurality of slideways 128 are arranged on the receiving portion 1231, the centrifugal member 127 is arranged as a plurality of centrifugal beads, and at least one centrifugal bead is arranged in each slideway 128. The plurality of slideways 128 are distributed around the central sleeve 121, and the slideways 128 extend along the radial direction of the central sleeve 121. Taking one of the slideways 128 as an example, the slideway 128 includes a first limiting portion 1281 and a second limiting portion 1282. The slideway 128 has a certain slope, and the end of the pressing plate 1241 close to the centrifugal member 127 has a preset plane, the preset plane is perpendicular to the first installation direction X, and the distance from the first limiting portion 1281 to the preset plane is greater than the distance from the second limiting portion 1282 to the preset plane. The outer cover 123 is connected to the engine 11 in a transmission manner, and the outer cover 123 rotates when the engine 11 is started. When the speed of the engine 11 is lower than the preset speed, the centrifugal beads are in the first limiting portion 1281, and the centrifugal member 127 is in the first state; when the speed of the engine 11 is higher than the preset speed, the centrifugal beads gradually slide from the first limiting portion 1281 to the second limiting portion 1282 along the slideway 128, and the centrifugal member 127 is in the second state. When the centrifugal member 127 is in the second state, since the distance from the first limiting portion 1281 to the preset plane is less than the diameter of the centrifugal beads, the pressure plate 1241 is subjected to the force of the centrifugal beads, and the force of the centrifugal beads on the pressure plate 1241 is opposite to the force of the first elastic member 1243 on the pressure plate 1241.

[0032] When the vehicle is running at a low speed, the speed of the engine 11 is lower than the preset speed, the force of the first elastic member 1243 on the pressure plate 1241 is greater than the force of the centrifugal beads on the pressure plate 1241, the centrifugal beads abut against the first limiter 1281, and the pressure plate assembly 14 and the friction plate assembly 122 are separated; when the vehicle is running at a high speed, the speed of the engine 11 is higher than the preset speed, the force of the first elastic member 1243 on the pressure plate 1241 is less than the force of the centrifugal beads on the pressure plate 1241, the centrifugal beads abut against the second limiter 1282, at this time, the force of the centrifugal beads on the pressure plate 1241 overcomes the elastic force of the first elastic member 1243 on the pressure plate 1241, and the pressure plate assembly 14 and the friction plate assembly 122 are pressed tightly. According to the material and size of the centrifugal member 127 in this application, the preset speed of the engine 11 is greater than or equal to 1500rpm and less than or equal to 3000rpm. Further, the preset speed of the engine 11 is greater than or equal to 1800rpm and less than or equal to 2700rpm. Furthermore, the preset speed of the engine 11 is greater than or equal to 2100 rpm and less than or equal to 2400 rpm. In this setting mode, the preset speed is in a suitable range. When the preset speed of the engine 11 is less than this range, the force exerted by the centrifugal member 127 on the pressure plate 1241 is insufficient to counteract the elastic force exerted by the first elastic member 1243 on the pressure plate 1241, and the clutch 12 does not need to be operated; when the preset speed of the engine 11 is greater than this range, the force exerted by the centrifugal member 127 on the pressure plate 1241 overcomes the elastic force exerted by the first elastic member 1243 on the pressure plate 1241, and the clutch 12 will need to be operated by the driver.

[0033] like Figure 4 As shown, the first fixing member 1242 can be configured as a bolt, and the first elastic member 1243 can be configured as a spring. The first fixing member 1242 penetrates the pressing plate 1241 , the first elastic member 1243 and the outer cover 123 . When the speed of the engine 11 is lower than the preset speed, the pressure plate 1241 abuts against the outer cover 123 under the pressure of the spring, and the centrifugal member 127 is in the first limiting portion 1281. At this time, the force of the centrifugal member 127 on the pressure plate 1241 is not enough to overcome the elastic force of the spring. At this time, the pressure plate 1241 is separated from the friction plate assembly 122; when the speed of the engine 11 is higher than the preset speed, the centrifugal member 127 is in the second limiting portion 1282, and the force of the centrifugal member 127 on the pressure plate 1241 is greater than the force of the first elastic member 1243 on the pressure plate 1241. The pressure plate 1241 is pressed along the first installation direction X. At this time, the pressure plate 1241 abuts against the friction plate assembly 122, and the pressure plate assembly 124 and the friction plate assembly 122 are pressed tightly.

[0034] As an optional embodiment, the second fixing member 1252 can be set as a bolt, and the second elastic member 1253 can be set as a spring. The pull rod assembly 126 includes a first rod 1261, a lifting plate 1262 and a second rod 1263. The first rod 1261 is sequentially arranged on the lifting plate 1262, the pressure plate 1251 and the center sleeve 121 along the second installation direction Y, and the first fixing member 1242 is sequentially arranged on the lifting plate 1262, the second elastic member 1253, the pressure plate 1251 and the center sleeve 121 along the second installation direction Y. The second fixing member 1252 connects the lifting plate 1262 with the pressure plate 1251, and the second elastic member 1253 is arranged between the lifting plate 1262 and the pressure plate 1251. The first rod 1261, the lifting plate 1262 and the second rod 1263 are used to control the axial movement of the pressure plate 1251 along the first rod 1261. When the driver does not operate the clutch 12, the lifting plate 1262 compresses the spring under the action of the second fixing member 1252. At this time, the pressure plate 1251 and the friction plate assembly 122 are pressed tightly, and the friction plate assembly 122 is in a transmission state; when the driver operates the clutch 12, the second rod 1263 prevents the spring from loosening through the lifting plate 1262, and the pressure plate 1251 and the friction plate assembly 122 are separated, and the friction plate assembly 122 is in a disconnected state.

[0035] The vehicle of the present application is provided with a pressure plate assembly 125 and a pressure plate assembly 124 at both ends of the clutch 12, respectively. The pressure plate assembly 125 and the pressure plate assembly 124 are used to cooperate in pressing the friction plate assembly 122. When the pressure plate assembly 125 and the pressure plate assembly 124 simultaneously press the friction plate assembly 122, the clutch 12 transmits power between the engine 11 and the transmission 13; when the pressure plate assembly 125 and / or the pressure plate assembly 124 are separated from the friction plate assembly 122, the clutch 12 does not transmit power between the engine 11 and the transmission 13. Among them, the pressure plate assembly 125 is controlled by the driver through the pull rod assembly 126, and the pressure plate assembly 124 is affected by the speed of the engine 11. When the vehicle starts or stops, the vehicle speed is low, the engine 11 speed is low, the clutch 12 speed is low, the pressure plate assembly 124 is separated from the friction plate assembly 122 under the elastic force of the spring, and the driver can cut off the power transmission without operation; when the vehicle speed increases, the engine 11 speed increases, the clutch 12 speed also increases, the centrifugal member 127 moves away from the center sleeve 121 around the axis of the center sleeve 121 under the action of centrifugal force, and the centrifugal member 127 applies a certain pressure to the pressure plate 1241 to overcome the elastic force of the spring. At this time, the pressure plate assembly 124 is pressed against the friction plate assembly 122 under the elastic force of the spring, and the driver can control the clutch 12 by controlling the pressure plate assembly 125. Under this setting, the clutch 12 does not need to be operated in the low-speed state of vehicle starting and stopping, and the driver's operation is more convenient.

[0036] like Figure 1 and Figure 2As shown, the present application also provides a motorcycle 200, which includes a frame 21, a body cover 22, and a running assembly 23. The frame 21 is used to form the overall structure of the motorcycle 200 and support the components installed on the motorcycle 200. The body cover 12 is at least partially connected to the frame 11, and is used to protect the equipment and structure inside the motorcycle 200. The running assembly 13 is at least partially arranged under the frame 11, and is used to drive the frame 11 to move. The motorcycle 200 adopts a powertrain 100, and the powertrain 100 is at least partially arranged on the frame 11. The powertrain 100 is used to drive the running assembly 13 to operate and then drive the motorcycle 200.

[0037] The above is a detailed introduction to the motorcycle and the clutch provided by the present application. The present application uses specific examples to illustrate the principles and implementation methods of the present application, but the technical features of the present application are not limited thereto. For ordinary technicians in this technical field, the present application can also be improved and modified without departing from the principles of the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A powertrain, comprising: An engine, the engine being used to provide power; A transmission, the transmission being drivingly connected to the engine; a clutch, the clutch being disposed between the engine and the transmission; The clutch comprises a center sleeve, a friction plate assembly and a pressure plate assembly, wherein the friction plate assembly is sleeved outside the center sleeve; the pressure plate assembly is arranged on one side of the friction plate assembly; It is characterized in that The clutch further comprises a slideway, a centrifugal member and a pressure plate assembly, wherein the pressure plate assembly is arranged on one side of the centrifugal member, the slideway is arranged on a side of the centrifugal member away from the pressure plate assembly, and the centrifugal member is at least partially arranged in the slideway; The pressure plate assembly includes a first elastic member and a pressure plate, the first elastic member abuts against one side of the pressure plate, and the centrifugal member abuts against the other side of the pressure plate. The force exerted by the centrifugal member on the pressure plate is opposite to the force exerted by the first elastic member on the pressure plate. The pressure plate is pressed against or separated from the friction plate assembly under the action of the centrifugal member and the first elastic member.

2. The powertrain according to claim 1, characterized in that: The clutch further comprises an outer cover, the outer cover comprises a receiving portion, the receiving portion is located at a side of the outer cover close to the pressure plate assembly, the slideway is arranged on the receiving portion, and the centrifugal member slides in the slideway.

3. The powertrain according to claim 2, characterized in that: The slideway includes a first limiting portion and a second limiting portion. When the engine speed is lower than a preset speed, the centrifugal member is located in the first limiting portion; when the engine speed is higher than the preset speed, the centrifugal member is located in the second limiting portion.

4. The powertrain according to claim 1, characterized in that: The pressure plate assembly is provided with a pressure plate, a second elastic member and a second fixing member, the second fixing member connects the pressure plate to the center sleeve, the second elastic member is at least partially arranged between the second fixing member and the pressure plate, and the second elastic member abuts against the pressure plate.

5. The powertrain according to claim 1, characterized in that: The centrifugal component is configured as the centrifugal bead, and the centrifugal component is configured as a metal material.

6. A powertrain, comprising: An engine, the engine being used to provide power; A transmission, the transmission being drivingly connected to the engine; a clutch, the clutch being disposed between the engine and the transmission; The clutch comprises a center sleeve, a friction plate assembly and a pressure plate assembly, wherein the friction plate assembly is sleeved outside the center sleeve; the pressure plate assembly is arranged on one side of the friction plate assembly; It is characterized in that The clutch further comprises a slideway, a centrifugal member and a pressure plate assembly, wherein the centrifugal member has a first state and a second state on the slideway; When the engine speed is lower than the preset speed, the centrifugal component is in the first state, and the pressure plate assembly and the friction plate assembly are separated; when the engine speed is higher than the preset speed, the centrifugal component is in the second state, and the pressure plate assembly and the friction plate assembly are pressed together; the preset speed can be set to be greater than or equal to 1500rpm and less than or equal to 3000rpm.

7. The powertrain according to claim 6, characterized in that: The pressure plate assembly and the pressure plate assembly are respectively arranged on both sides of the friction plate assembly, and the pressure plate assembly is provided with a pressure plate, a second elastic member and a second fixing member, the second fixing member connects the pressure plate to the center sleeve, the second elastic member is at least partially arranged between the second fixing member and the pressure plate, the second elastic member abuts against the pressure plate, and the clutch also includes a pull rod assembly, the pull rod assembly is at least partially connected to the pressure plate assembly, and the pressure plate is pressed or separated from the friction plate assembly under the action of the pull rod assembly.

8. The powertrain according to claim 6, characterized in that: The clutch also includes an outer cover, the outer cover includes a receiving portion, the centrifugal member is at least partially within the receiving portion, the receiving portion includes a plurality of slideways, the centrifugal member is configured as a plurality of centrifugal beads, the slideways have a certain slope, the slideways include a first limiting portion and a second limiting portion, and the centrifugal beads slide between the first limiting portion and the second limiting portion.

9. The powertrain according to claim 8, characterized in that: The friction plate assembly includes a plurality of connecting plates and a plurality of friction plates, the friction plates and the connecting plates are arranged at intervals, the friction plates are arranged on both sides of the friction plate assembly, the inner ring of the connecting plate abuts against the outer ring of the center sleeve, and the outer ring of the friction plate abuts against the inner ring of the outer cover.

10. A motorcycle, comprising: Frame; A traveling assembly, the traveling assembly being transmission-connected to the frame; a powertrain, the powertrain being at least partially disposed on the frame; a body covering, the body covering at least partially covering the powertrain; It is characterized in that The motorcycle comprises a powertrain as claimed in any one of claims 1 to 9.

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