Continuously variable transmission and motorcycle

Abstract

The invention relates to the field of motorcycle transmissions, and discloses a continuously variable transmission which comprises an executing mechanism and a speed change mechanism, the speed change mechanism comprises an input assembly, an output assembly and a connecting piece, the connecting piece is arranged between the input assembly and the output assembly in a tensioning mode, the executing mechanism comprises a displacement assembly and a measuring assembly, and the measuring assembly can measure the moving distance of the displacement assembly. The displacement assembly comprises a driving part, a speed reduction part, an inner lead screw and a sleeve, the speed reduction part is coaxially arranged in the driving part and meshed with the output end of the driving part, the sleeve is arranged at the output end of the speed reduction part, the inner lead screw sleeves the outer wall of the sleeve and is in threaded fit with the sleeve, and the end, away from the driving part, of the inner lead screw is rotationally connected with a driving wheel of the primary belt wheel; the speed reducing part can reduce the speed of the driving part and drive the sleeve to rotate, so that the inner lead screw can axially move on the outer wall of the sleeve, the primary belt wheel moving wheel is close to or away from the primary belt wheel fixed wheel, and the diameter of the input assembly tensioning connecting part is changed.

Description

Technical Field

[0001] The present invention relates to the field of motorcycle transmissions, and particularly to continuously variable transmissions and motorcycles. Background Art

[0002] A continuously variable transmission (CVT) is an automatic transmission system that can continuously change the transmission ratio. Its core feature is that it does not require fixed gears. By adjusting the contact radius of the drive belt or chain, it can achieve smooth acceleration and deceleration processes. This type of transmission is widely used in vehicles such as cars and motorcycles, and has the advantages of simple structure, small volume, good fuel economy, and high driving comfort.

[0003] There is a multi-scheme, modular, constant-power continuously variable speed control mechanism disclosed in a patent with the patent number CN204153070U. This continuously variable speed control mechanism achieves continuously variable speed by reducing or increasing the distance between the driving wheel and the fixed wheel of the split-type connecting piece: during the operation of the machine, the connecting piece wheel rotates. There is a bearing installed in the bearing support. The outer ring of the bearing is fixed to the bearing support, and the inner ring of the bearing is fixed to the connecting piece wheel. When the connecting piece rotates, it only drives the inner ring of the bearing to rotate, while the outer ring of the bearing and the bearing support remain stationary. In this way, the bearing support can be used for continuously variable speed control. During use, the speed control component directly or indirectly controls the up and down movement of the bearing support, drives the driving wheel of the split-type connecting piece wheel pair to move up and down, changes the distance between the driving and static wheels of the connecting piece wheel pair, and thus changes the transmission speed ratio of the two ends of the connecting piece wheel pair, achieving the purpose of continuously variable mechanical speed control.

[0004] However, in actual application, the driving wheel, static wheel of the connecting piece wheel pair of the transmission, and the actuator structures such as the motor and the intermediate shaft gear are all installed inside the motorcycle. Therefore, when assembling the motorcycle, it is necessary to complete the installation of the structures such as the motor that make up the actuator one by one before installing the pulley housing cover and other structures of the motorcycle, resulting in a low overall assembly efficiency of the motorcycle. Summary of the Invention

[0005] The present invention aims to provide a continuously variable transmission and a motorcycle to solve the problem of low assembly efficiency of motorcycles.

[0006] To achieve the above object, the present invention adopts the following technical solutions: a continuously variable transmission, comprising an actuator and a speed change mechanism. The speed change mechanism includes an input assembly, an output assembly, and a connecting member. The connecting member is tensioned between the input assembly and the output assembly. The output assembly includes a crankshaft, a primary pulley fixed wheel, and a primary pulley movable wheel. Both the primary pulley movable wheel and the primary pulley fixed wheel are provided on the crankshaft, and the primary pulley movable wheel can axially move along the crankshaft. The primary pulley movable wheel is located on the side away from the motorcycle, and the primary pulley fixed wheel is located on the side close to the motorcycle. The actuator includes a displacement assembly, which includes a driving member, a reduction member, an inner lead screw, and a sleeve. The reduction member is coaxially provided inside the driving member and meshes with the output end of the driving member. The sleeve is provided at the output end of the reduction member. The inner lead screw is sleeved on the outer wall of the sleeve and is in threaded cooperation with the sleeve. One end of the inner lead screw away from the driving member is rotatably connected to the primary pulley movable wheel. The reduction member can reduce the speed of the driving member and drive the sleeve to rotate, so that the inner lead screw can axially move on the outer wall of the sleeve, thereby making the primary pulley movable wheel approach or move away from the primary pulley fixed wheel, and further changing the diameter of the input assembly for tensioning the connecting member.

[0007] The traditional ECVT transmission includes an actuator, a pulley housing cover, a primary pulley fixed wheel, a primary pulley movable wheel, a secondary pulley fixed wheel, a secondary pulley movable wheel, a crankshaft, and an output shaft. Among them, the actuator is used to move the primary pulley movable wheel axially along the crankshaft for shifting gears. Moreover, the primary pulley fixed wheel is provided on the side close to the pulley housing cover, that is, the primary pulley fixed wheel is close to the outside of the motorcycle, and the primary pulley movable wheel is close to the inside of the motorcycle. The actuator structures such as the motor and the intermediate shaft gear of the transmission are also installed inside the pulley housing cover of the motorcycle. Therefore, when assembling the motorcycle, it is necessary to complete the installation of the structures such as the motor that make up the actuator one by one before installing the structures such as the pulley housing cover, resulting in a low overall assembly efficiency of the motorcycle.

[0008] The beneficial effect of this solution is: to solve the above problems, the applicant has developed a technology of installing the actuator outside the pulley housing cover, that is, the pulley housing cover can be installed first without installing the actuator, and the overall assembly of the motorcycle can be completed first. When the motorcycle is assembled, the externally mounted actuator can be buckled on the pulley housing cover to quickly complete the installation of the transmission actuator, effectively improving the assembly efficiency of the motorcycle. Moreover, the assembly of the motorcycle and the assembly of the actuator can be carried out simultaneously. After the motorcycle is assembled, the assembled actuator can be directly connected to the motorcycle, making the installation of the actuator more convenient and improving the assembly efficiency of the motorcycle at the same time.

[0009] At the same time, the actuator being independent of the motorcycle can also improve the heat dissipation efficiency and can be provided with an independent sealing and lubrication system. During the maintenance process of the motorcycle, it is not necessary to disassemble the power assembly of the motorcycle to separately maintain the actuator and the lubrication system of the actuator, making the maintenance more convenient.

[0010] In this solution, the driving pulley of the primary belt pulley is located on the side close to the belt pulley housing cover, and the fixed pulley of the primary belt pulley is located on the side close to the motorcycle. Therefore, when the driving pulley of the primary belt pulley is pushed to move axially along the sleeve by the actuator for shifting gears, the structure that pushes the driving pulley of the primary belt pulley will not be blocked by the fixed pulley of the primary belt pulley, enabling the above-mentioned external hanging technology to be realized.

[0011] Preferably, as an improvement, the input assembly includes a fixed pulley of the secondary belt pulley, a driving pulley of the secondary belt pulley, and an output shaft. Both the driving pulley of the secondary belt pulley and the fixed pulley of the secondary belt pulley are arranged on the outer wall of the output shaft, and the driving pulley of the secondary belt pulley can move axially along the outer wall of the output shaft. The driving pulley of the secondary belt pulley is located on the side close to the motorcycle, the fixed pulley of the secondary belt pulley is located on the side away from the motorcycle, a limiting ring is provided at one end of the fixed pulley of the secondary belt pulley close to the motorcycle, and a pre-tightening spring is provided between the limiting ring and the driving pulley of the secondary belt pulley.

[0012] The beneficial effect is that by arranging the driving pulley of the secondary belt pulley, the fixed pulley of the secondary belt pulley in the opposite direction to the driving pulley of the primary belt pulley and the fixed pulley of the primary belt pulley, stepless speed change matching of the output assembly and the input assembly is achieved. The limiting ring is used to install the pre-tightening spring, and the pre-tightening spring is used to cooperate with the output assembly to change the distance between the driving pulley of the secondary belt pulley and the fixed pulley of the secondary belt pulley, thereby changing the diameter of the tensioning connecting piece of the input assembly.

[0013] Preferably, as an improvement, the actuator further includes a measurement assembly. The measurement assembly includes a distance sensor and a signal block. The signal block is arranged on the outer wall of the inner lead screw and moves axially along with the inner lead screw. The distance sensor is arranged on one side of the output end of the displacement assembly, and the distance sensor can detect the moving distance of the signal block.

[0014] The beneficial effect is that in this solution, only one sensor needs to be set to accurately measure the displacement. Compared with the current method that requires the cooperation of an angle sensor and a stroke sensor to achieve displacement measurement, the structure of this solution is simpler and the weight of the measurement mechanism is smaller.

[0015] Preferably, as an improvement, the distance sensor is a stroke sensor, and a slope is provided at one end of the signal block close to the distance sensor. The distance between the end of the slope close to the end of the inner lead screw and the inner lead screw is greater than or less than the distance between the end away from the end of the inner lead screw and the inner lead screw.

[0016] The beneficial effects are as follows: Since the inclined surface is inclined, there is a difference in the distances between the two ends of the inclined surface, one end close to the end of the inner screw rod and the other end far from the end of the inner screw rod, and the sensor. During gear shifting, the signal block moves axially synchronously. At this time, the inclined surface moves accordingly, and the relative position between the inclined surface and the sensor changes, causing the sensor to detect a change in the distance from the signal block. The stroke sensor can collect the magnetic field change signal of the stroke displacement, thereby more quickly and accurately determining the position of the inclined surface, and improving the measurement efficiency and accuracy.

[0017] Preferably, as an improvement, the speed change mechanism is arranged inside the pulley housing cover. An opening is provided on the outer wall of the pulley housing cover, and a housing is arranged at the opening. The driving member and the decelerating member are arranged on the outer wall of the housing far from the pulley housing cover, and the output end of the decelerating member rotates through the housing into the housing. The sleeve, the inner screw rod, and the measuring assembly are all located inside the housing. A positioning groove is provided on the inner wall of the housing, and the positioning groove extends along the axial direction of the inner screw rod. The end of the signal block far from the inner screw rod is located in the positioning groove and is slidably matched with the positioning groove.

[0018] The beneficial effects are as follows: During the gear shifting process, since the signal block is eccentrically arranged on the outer wall of the inner screw rod, the cooperation between the positioning groove and the signal block can guide the inner screw rod, thereby preventing the inner screw rod from rotating. While simplifying the structure, it ensures that the inner screw rod can move axially, pushing the primary pulley driving wheel axially, thereby completing the gear shift.

[0019] Preferably, as an improvement, a first bearing is arranged between the sleeve and the housing. A connecting member is arranged at the output end of the decelerating member, and the connecting member is connected to the sleeve through a spline.

[0020] The beneficial effects are as follows: The bearing supports the sleeve to prevent the sleeve from shaking when rotating. The connecting member is used to connect the decelerating member and the sleeve, enabling the driving member to drive the sleeve to rotate.

[0021] Preferably, as an improvement, it further includes a mounting seat. The mounting seat is arranged on the outer wall of the housing, and the distance sensor is arranged on the mounting seat.

[0022] The beneficial effects are as follows: By installing the mounting seat on the housing, the sensor can be quickly installed at the preset position on the housing.

[0023] Preferably, as an improvement, a limiting ring is arranged at one end of the sleeve close to the driving member. A plurality of limiting rods are evenly arranged at one end of the limiting ring close to the inner screw rod, and the signal block can abut against the limiting rods; or a plurality of limiting grooves are evenly opened at one end of the limiting ring close to the inner screw rod, and an abutting rod is arranged at one end of the signal block close to the limiting ring, and the abutting rod can abut against the inner wall of the limiting groove.

[0024] The beneficial effects are as follows: By providing a limiting ring on the outer wall of the sleeve to limit the moving distance of the inner lead screw on the outer wall of the sleeve and prevent the inner lead screw from rotating out of the connection range of the sleeve. During the rotation of the sleeve, the limiting rod performs a circular motion along with the limiting ring. When the inner lead screw moves towards the sleeve, the rotating limiting rod will abut against the side wall of the signal block. When the signal block abuts against the limiting rod, the driving member controls the sleeve to stop rotating, thereby preventing the signal block from hitting the limiting ring, further preventing the first bearing from deforming or being damaged under the impact of the inner lead screw, and improving the service life of the actuator. Or by providing an abutting rod and a limiting groove, when the abutting rod abuts against the end of the limiting groove, the driving member controls the sleeve to stop rotating, thereby preventing the signal block from hitting the limiting ring, further preventing the first bearing from deforming or being damaged under the impact of the inner lead screw, and improving the service life of the actuator.

[0025] Preferably, as an improvement: The signal block includes a permanent magnet block, and the distance sensor is a Hall sensor.

[0026] The beneficial effects are as follows: In this solution, under the Hall effect between the Hall sensor and the permanent magnet block on the signal block, the moving distance of the signal block can be accurately detected.

[0027] A motorcycle includes the continuously variable transmission according to any one of claims 1-8. Description of the Drawings

[0028] Figure 1 It is a top view of Embodiment 1 of the present invention; Figure 2 is Figure 1 a cross-sectional view taken along line A-A in Detailed Description of the Invention

[0029] The following is a further detailed description through specific embodiments: The reference numerals in the accompanying drawings of the specification include: pulley housing cover 1, crankshaft 2, primary pulley fixed wheel 3, primary pulley moving wheel 4, mounting pipe 5, secondary pulley fixed wheel 6, secondary pulley moving wheel 7, output shaft 8, first connecting pipe 9, limiting ring 10, pre-tightening spring 11, housing 12, driving member 13, connecting member 14, oil seal 15, sleeve 16, first bearing 17, inner lead screw 18, second connecting pipe 19, second bearing 20, distance sensor 21, signal block 22, mounting seat 23, inclined surface 24.

[0030] Embodiment 1 Embodiment 1 is basically as shown in the accompanying Figure 1-2 drawings, such as the continuously variable transmission shown in Figure 1 which includes a pulley housing cover 1, an actuator and a speed change mechanism. The pulley housing cover 1 is fixedly installed on the outer wall of the motorcycle through bolts. In this embodiment, the speed change mechanism is arranged inside the pulley housing cover 1, and the speed change mechanism includes an input assembly, an output assembly and a connecting member; As Figure 2 shown, the output component is located on the left side of the input component. The output component includes a crankshaft 2, a primary pulley fixed wheel 3, and a primary pulley moving wheel 4. The primary pulley fixed wheel 3 is sleeved on the lower end of the crankshaft 2 and is spline-connected to the crankshaft 2. The primary pulley moving wheel 4 is coaxially fixed with an installation pipe 5. The installation pipe 5 is sleeved on the outer wall of the crankshaft 2 and is in small-gap fit with the crankshaft 2, so that the primary pulley moving wheel 4 can axially move along the outer wall of the crankshaft 2. In this embodiment, the primary pulley moving wheel 4 is located above the primary pulley fixed wheel 3, that is, the primary pulley fixed wheel 3 is close to the inside of the motorcycle, while the primary pulley moving wheel 4 is close to the pulley housing cover 1; The input component includes a secondary pulley fixed wheel 6, a secondary pulley moving wheel 7, and an output shaft 8. Both the upper and lower ends of the secondary pulley fixed wheel 6 are integrally formed with a first connecting pipe 9 coaxially. The output shaft 8 axially penetrates the secondary pulley fixed wheel 6 along the first connecting pipe 9 and drives the secondary pulley fixed wheel 6 to rotate synchronously. The secondary pulley moving wheel 7 is sleeved on the lower end of the first connecting pipe 9. The secondary pulley moving wheel 7 and the first connecting pipe 9 are in small-gap fit, so that the secondary pulley moving wheel 7 can axially move relative to the secondary pulley fixed wheel 6 along the first connecting pipe 9. In this embodiment, the secondary pulley moving wheel 7 is located below the secondary pulley fixed wheel 6, that is, the secondary pulley fixed wheel 6 is close to the pulley housing cover 1, while the secondary pulley moving wheel 7 is close to the inside of the motorcycle. A limiting ring 10 is integrally formed at the lower end of the first connecting pipe 9. A pre-tightening spring 11 is sleeved on the outer wall of the lower end of the first connecting pipe 9, and both ends of the pre-tightening spring 11 are abutted against the secondary pulley moving wheel 7 and the limiting ring 10 respectively; The connecting member is tensioned between the input component and the output component. In this embodiment, the connecting member is set as a belt. Specifically, the left end of the belt is tensioned between the primary pulley moving wheel 4 and the primary pulley fixed wheel 3, and the right end of the belt is tensioned between the secondary pulley moving wheel 7 and the secondary pulley fixed wheel 6.

[0031] An opening is formed on the outer wall of the pulley housing cover 1 located above the output component. An outer shell 12 is fixedly installed at the opening through bolts. The outer shell 12 is used to install the actuator; The actuator includes a displacement component and a measurement component. The measurement component can measure the moving distance of the displacement component. The displacement component includes a driving member 13, a speed reducer, an inner lead screw 18, and a sleeve 16. The driving member 13 is fixedly installed at the upper end of the housing 12 by bolts. The speed reducer is coaxially arranged inside the driving member 13 and meshes with the output end of the driving member 13. The specific structure is as in the prior art (Chinese Patent Publication No.: CN222423329U), and will not be elaborated here. A connecting member 14 is fixedly installed at the lower end of the output end of the speed reducer by bolts, and the lower end of the connecting member 14 rotatably penetrates through the housing 12 through an opening. An oil seal 15 is fixedly installed between the connecting member 14 and the housing 12. The sleeve 16 is located inside the housing 12, and the upper end of the sleeve 16 is in interference fit with the lower end of the connecting member 14 through splines. A first bearing 17 is fixedly installed between the sleeve 16 and the housing 12. Threads are provided on the outer wall of the sleeve 16, and the inner lead screw 18 is threadedly connected to the outer wall of the sleeve 16. The upper end of the primary pulley moving wheel 4 is integrally formed with a second connecting pipe 19 coaxially, and the upper end of the second connecting pipe 19 extends into the sleeve 16 and is in clearance fit with the sleeve 16. A second bearing 20 is fixedly installed between the inner lead screw 18 and the second connecting pipe 19. The second bearing 20 is not only used to connect the inner lead screw 18 and the second connecting pipe 19, so that the inner lead screw 18 can drive the primary pulley moving wheel 4 to move axially through the second connecting pipe 19, but also prevent the second connecting pipe 19 from driving the inner lead screw 18 to rotate, improving the accuracy of the measurement component. An oil seal 15 is provided between the outer wall of the lower end of the second connecting pipe 19 and the inner wall of the lower end of the inner lead screw 18. The speed reducer can decelerate the driving member 13 and drive the sleeve 16 to rotate, so that the inner lead screw 18 can move axially on the outer wall of the sleeve 16.

[0032] It further includes a measurement component. The measurement component includes a distance sensor 21 and a signal block 22. The signal block 22 is located on the left side wall of the inner lead screw 18 and is integrally formed with the inner lead screw 18. A mounting seat 23 is fixedly installed at the left end of the housing 12 by bolts. The distance sensor 21 is fixedly installed on the mounting seat 23. The distance sensor 21 is a travel sensor. An inclined surface 24 is provided at one end of the signal block 22 opposite to the distance sensor 21. The inclined surface 24 is inclined with the upper end to the left and the lower end to the right, so that from top to bottom, the distance between the part of the inclined surface 24 opposite to the travel sensor and the travel sensor gradually increases. A positioning groove is provided on the inner wall of the housing 12, and the positioning groove extends along the axial direction of the inner lead screw 18. The cross-section of the signal block 22 along the radial direction of the inner lead screw 18 is fan-shaped, increasing the contact area between the signal block 22 and the positioning groove and increasing the stability when the inner lead screw 18 moves axially. The signal block 22 is located in the positioning groove and is in sliding fit with the positioning groove. The cooperation between the positioning groove and the signal block 22 can limit the inner lead screw 18, so that when the driving member 13 drives, the inner lead screw 18 can slide axially along the sleeve 16, thereby driving the primary pulley moving wheel 4 to move axially along the crankshaft 2.

[0033] A limiting ring is integrally formed on the outer wall of the upper end of the sleeve 16. A number of limiting rods (not shown in the figure) are uniformly fixedly installed at the lower end of the limiting ring by welding. In this embodiment, the number of limiting rods is set to 3. By increasing the number of limiting rods, the probability of the signal block 22 abutting against the limiting rods is increased, thereby further preventing the inner lead screw 18 from colliding with the limiting ring. When the inner lead screw 18 moves towards the sleeve 16, the rotating limiting rod will abut against the side wall of the signal block 22. When the signal block 22 abuts against the limiting rod, the driving member 13 controls the sleeve 16 to stop rotating, thereby preventing the signal block 22 from hitting the limiting ring, and further preventing the first bearing 17 from deforming or being damaged under the impact of the inner lead screw 18, and improving the service life of the actuator. Of course, 3 limiting grooves can also be opened at the lower end of the limiting ring, and the upper end of the signal block 22 is fixedly installed with an abutting rod by welding. The sleeve 16 stops rotating by abutting the abutting rod against the end of the limiting groove, thereby preventing the inner lead screw 18 from hitting the limiting ring.

[0034] The specific implementation process is as follows: When the variable speed structure of this solution is in use, the actuator is arranged in the housing 12 externally hung on the outer wall of the pulley housing cover 1. During installation, the inner lead screw 18 will not be blocked by the primary pulley fixed pulley 3, so that it can be quickly fixedly connected to the primary pulley moving pulley 4. When the actuator needs to shift gears, the driving member 13 is started and output through the speed reducing member, so that the connecting member 14 connected to the output end of the speed reducing member drives the sleeve 16 to rotate, causing the inner lead screw 18 to move along the axial direction of the sleeve 16. At the same time, the inner lead screw 18 drives the primary pulley moving pulley 4 to move synchronously. At this time, the signal block 22 also moves synchronously, and the position of the inclined surface 24 relative to the travel sensor changes, causing the distance detected by the travel sensor to change. At this time, according to the change amount and the slope of the inclined surface 24, the axial sliding distance of the inner lead screw 18 along the sleeve 16 can be quickly calculated. This distance is the axial movement distance of the primary pulley moving pulley 4 along the sleeve 16, thereby determining the shift amount.

[0035] This application also proposes a motorcycle, which includes the above-mentioned continuously variable transmission. Of course, it also includes other necessary components that make up the motorcycle, which will not be elaborated here and can be referred to the prior art.

[0036] Embodiment 2 Based on Embodiment 1, the signal block 22 in this embodiment is strip-shaped and extends along the axial direction of the inner lead screw 18. The signal block 22 includes a permanent magnet block. Specifically, the permanent magnet block in this embodiment is a magnet, and the signal block 22 is formed by plastic coating on the outside of the magnet. The signal block 22 is installed on the inner lead screw 18 by bolts. At the same time, the distance sensor 21 in this embodiment uses a Hall sensor, and the detection end of the Hall sensor is located at the rear side of the signal block 22 and faces the signal block 22. Compared with Embodiment 1, the Hall sensor in this embodiment uses the Hall effect to detect the moving distance of the signal block 22.

[0037] The above are only embodiments of the present invention. Specific technical solutions and / or common knowledge such as characteristics that are well known in the art are not described in detail here. It should be noted that for those skilled in the art, without departing from the technical solution of the present invention, several deformations and improvements can still be made, and these should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicability of the patent. The protection scope required by this application should be based on the content of its claims, and the specific implementation manners and the like described in the specification can be used to interpret the content of the claims.

Claims

1. Continuously variable transmission, characterized in that: It includes an actuator and a speed change mechanism. The speed change mechanism includes an input component, an output component and a connecting member. The connecting member is tensioned between the input component and the output component. The output component includes a crankshaft, a primary pulley fixed wheel and a primary pulley moving wheel. Both the primary pulley moving wheel and the primary pulley fixed wheel are arranged on the crankshaft, and the primary pulley moving wheel can axially move along the crankshaft. The primary pulley moving wheel is located on the side away from the motorcycle, and the primary pulley fixed wheel is located on the side close to the motorcycle. The actuator includes a displacement component. The displacement component includes a driving member, a reduction member, an inner lead screw and a sleeve. The reduction member is coaxially arranged inside the driving member and meshes with the output end of the driving member. The sleeve is arranged at the output end of the reduction member. The inner lead screw is sleeved on the outer wall of the sleeve and is in threaded cooperation with the sleeve. One end of the inner lead screw away from the driving member is rotatably connected to the primary pulley moving wheel. The reduction member can reduce the speed of the driving member and drive the sleeve to rotate, so that the inner lead screw can axially move on the outer wall of the sleeve, thereby making the primary pulley moving wheel approach or move away from the primary pulley fixed wheel, and further changing the diameter of the input component for tensioning the connecting member.

2. The continuously variable transmission according to claim 1, wherein: The input component includes a secondary pulley fixed wheel, a secondary pulley moving wheel and an output shaft. Both the secondary pulley moving wheel and the secondary pulley fixed wheel are arranged on the outer wall of the output shaft, and the secondary pulley moving wheel can axially move along the outer wall of the output shaft. The secondary pulley moving wheel is located on the side close to the motorcycle, and the secondary pulley fixed wheel is located on the side away from the motorcycle. A limiting ring is arranged at one end of the secondary pulley fixed wheel close to the motorcycle, and a pre-tightening spring is arranged between the limiting ring and the secondary pulley moving wheel.

3. The continuously variable transmission according to claim 2, characterized in that: The actuator further includes a measuring component. The measuring component includes a distance sensor and a signal block. The signal block is arranged on the outer wall of the inner lead screw and axially moves along with the inner lead screw. The distance sensor is arranged on one side of the output end of the displacement component, and the distance sensor can detect the moving distance of the signal block.

4. The continuously variable transmission according to claim 3, wherein: The distance sensor is a travel sensor. A bevel surface is opened at one end of the signal block close to the distance sensor. The distance between one end of the bevel surface close to the end of the inner lead screw and the inner lead screw is greater than or less than the distance between the end away from the end of the inner lead screw and the inner lead screw.

5. The continuously variable transmission according to claim 4, characterized in that: The speed change mechanism is arranged inside a pulley housing cover. An opening is opened on the outer wall of the pulley housing cover, and a housing is arranged at the opening. The driving member and the reduction member are arranged on the outer wall of the end of the housing away from the pulley housing cover, and the output end of the reduction member rotates through the housing to the inside. The sleeve, the inner lead screw and the measuring component are all located inside the housing. A positioning groove is opened on the inner wall of the housing, and the positioning groove extends along the axial direction of the inner lead screw. One end of the signal block away from the inner lead screw is located in the positioning groove and is in sliding cooperation with the positioning groove.

6. The continuously variable transmission according to claim 5, wherein: A first bearing is arranged between the sleeve and the housing. A connecting member is arranged at the output end of the reduction member, and the connecting member is connected to the sleeve by splines.

7. The continuously variable transmission according to claim 6, wherein: It further includes a mounting seat. The mounting seat is arranged on the outer wall of the housing, and the distance sensor is arranged on the mounting seat.

8. The continuously variable transmission according to claim 7, wherein: A limiting ring is arranged at one end of the sleeve close to the driving member. A plurality of limiting rods are evenly arranged at one end of the limiting ring close to the inner lead screw, and the signal block can abut against the limiting rods; or a plurality of limiting grooves are evenly opened at one end of the limiting ring close to the inner lead screw, and an abutting rod is arranged at one end of the signal block close to the limiting ring, and the abutting rod can abut against the inner wall of the limiting groove.

9. The continuously variable transmission according to claim 3, characterized in that: The signal block includes a permanent magnet block, and the distance sensor is a Hall sensor.

10. A motorcycle, characterized in that: Comprising the continuously variable transmission according to any one of claims 1-8.

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