CN114932801A

CN114932801A - All-terrain vehicle

Info

Publication number: CN114932801A
Application number: CN202210467497.2A
Authority: CN
Inventors: 不公告发明人
Original assignee: Segway Technology Co Ltd
Current assignee: Segway Technology Co Ltd
Priority date: 2022-04-29
Filing date: 2022-04-29
Publication date: 2022-08-23

Abstract

The application provides an all-terrain vehicle, which relates to the technical field of vehicles and is used for solving the technical problem of poor operation stability of a driven wheel set in a continuously variable transmission of the existing all-terrain vehicle; the second rim plate is connected with the gear change piece to the gear change piece can drive the transmission seat and rotate, and transmit power to the transmission shaft through the transmission seat. The application provides an all terrain vehicle will come from the output torque transmission of driving wheel group to driven wheelset through the transmission seat, can reduce the distance between the torque input point of driven wheelset and the torque output point of driven wheelset to promote driven wheelset operating stability.

Description

All-terrain vehicle

Technical Field

The application relates to the technical field of vehicles, in particular to an all-terrain vehicle.

Background

In order to reduce the phenomena of impact, pause and the like during transmission, the continuously variable transmission is produced. Among them, a Continuously Variable Transmission (CVT) is widely used in all terrain vehicles, motorcycles, and the like as a common Continuously Variable Transmission. The CVT continuously variable transmission generally includes a driving pulley set, a driven pulley set, and a belt, where the driving pulley set and the driven pulley set transmit power through the belt, and realize continuously variable transmission through automatic change of an output radius of the driving pulley set and an input radius of the driven pulley set.

Wherein, driven wheelset includes from the fixed rim plate of driving wheel, from driving wheel removal rim plate and from driving wheel output shaft, from fixed rim plate of driving wheel and from driving wheel transmission shaft fixed connection to can transmit the output torque who comes from driving wheelset to from the driving wheel transmission shaft, and transmit to the gearbox from the driving wheel transmission shaft.

However, in the continuously variable transmission described above, the distance between the torque input point of the driven wheel set and the torque output point of the driven wheel set is large, affecting the operational stability of the driven wheel set.

Disclosure of Invention

In view of the above, embodiments of the present application provide an all-terrain vehicle capable of improving the operational stability of a driven wheel set.

In order to achieve the above object, the embodiments of the present application provide the following technical solutions:

a first aspect of an embodiment of the present application provides an all-terrain vehicle comprising a frame, front and rear wheels supporting the frame, and a powertrain disposed on the frame, the powertrain comprising a continuously variable transmission having a driving wheel set, a driven wheel set, and a transmission; the driving wheel set transmits power to the driven wheel set through the transmission piece, and the driven wheel set comprises a first wheel disc, a second wheel disc, a transmission shaft, a speed change piece and a transmission seat; the first wheel disc and the second wheel disc are coaxially arranged with the transmission shaft, the first wheel disc and the second wheel disc rotate relative to the transmission shaft, the second wheel disc can axially move along the transmission shaft, two disc surfaces of the first wheel disc and the second wheel disc, which face each other, are obliquely arranged relative to the transmission shaft so as to jointly form a wheel groove for accommodating the transmission member, and the width of the groove opening of the wheel groove is greater than the groove width of the groove bottom of the wheel groove; the transmission seat is positioned between the first wheel disc and the second wheel disc, the transmission seat is connected to the transmission shaft and rotates synchronously with the transmission shaft, the second wheel disc is connected with the speed change piece, and the speed change piece is configured to drive the transmission seat to rotate so as to transmit power to the transmission shaft through the transmission seat; the power transmission assembly is connected to the first wheel disc, the first wheel disc transmits power to the second wheel disc through the power transmission assembly, and the power transmission assembly and the transmission seat are located in different circumferential directions of the second wheel disc respectively.

In an alternative embodiment, the actuator seat comprises an annular sleeve and at least one rolling element; the annular sleeve is sleeved on the transmission shaft and rotates synchronously with the transmission shaft; the rolling piece is rotatably arranged on the side of the annular sleeve, an included angle is formed between the rotating axis of the rolling piece and the axis of the transmission shaft, and the rolling piece is configured to abut against the speed changing piece so as to transmit power to the second wheel disc.

In an alternative embodiment, the axis of rotation of the rolling member is perpendicular to the axis of the drive shaft.

In an alternative embodiment, the driven wheel set further comprises a return spring; the return spring is sleeved on the transmission shaft, one end of the return spring is abutted to the transmission seat, and the other end of the return spring is abutted to the second wheel disc, so that the second wheel disc can move along the axial direction of the transmission shaft relatively.

In an alternative embodiment, the annular sleeve is provided with an annular positioning groove, and the axial direction of the annular positioning groove is consistent with the axial direction of the annular sleeve; one end of the return spring is abutted to the annular positioning groove, and the other end of the return spring is abutted to the inner surface of the second wheel disc.

In an alternative embodiment, a spline or a gear is provided between the annular sleeve and the transmission shaft, and the annular sleeve and the transmission shaft are in transmission connection through the spline or the gear.

In an optional embodiment, a pin shaft is arranged on the side wall of the annular sleeve; the axis of the pin shaft is perpendicular to the axis of the transmission shaft, and the rolling part is rotatably connected to the pin shaft.

In an alternative embodiment, the drive shaft is provided with a circlip and/or a washer for axially limiting the annulus.

In an optional embodiment, a rolling bearing is arranged between the first wheel disc and the transmission shaft, and the first wheel disc is rotatably connected to the transmission shaft through the rolling bearing; a sliding bearing is arranged between the second wheel disc and the transmission shaft, and the second wheel disc is connected to the transmission shaft through the sliding bearing.

In an alternative embodiment, the transmission has a limit groove engaged with the rolling member, and the rolling member is engaged with a groove wall of the limit groove to transmit power to the second disk.

In an alternative embodiment, the transmission member includes an annular side wall extending in an axial direction of the drive shaft; the annular side wall is provided with a notch to form the limiting groove, and the notch of the limiting groove faces the first wheel disc so that the rolling piece can extend into the limiting groove.

In an alternative embodiment, the annular side wall also forms a guide chute; one end of the guide chute extends to the edge of the annular side wall, and the other end of the guide chute is communicated with the limiting groove.

In an alternative embodiment, the profile dimensions of the guide chute and the limit groove are larger than the profile outer diameter of the rolling member; the rolling piece can roll along the groove walls of the limiting groove and the guide chute.

In an alternative embodiment, the continuously variable transmission further comprises a power conducting assembly connected to the first sheave; the first wheel disc transmits power to the second wheel disc through the power transmission assembly.

In an alternative embodiment, the power conducting assembly includes a slider; the sliding block is arranged on one side, facing the second wheel disc, of the first wheel disc, the second wheel disc is provided with a guide groove matched with the sliding block, and the sliding block is embedded in the guide groove; the sliding block is configured to rotate circumferentially relative to the second wheel disc and is in contact with the groove surface of the guide groove to drive the second wheel disc to rotate.

In an alternative embodiment, the power conducting assembly further comprises a slider mount; the slider mounting frame is used for mounting the slider, and the slider mounting frame is fixedly connected with the first wheel disc.

In an alternative embodiment, the slider is mounted on the slider mounting bracket by a pin, and the slider rotates relative to the slider mounting bracket.

In an alternative embodiment, the sliding block is a rectangular sliding block, and the extending direction of the guide groove is consistent with the axial direction of the transmission shaft.

In an alternative embodiment, the slider and the rolling elements are offset from each other in different circumferential directions of the second wheel disc.

In an alternative embodiment, the second wheel disc has a guide cylinder facing the first wheel disc, the outer wall of the guide cylinder being cylindrical; the axial direction of the guide cylinder is consistent with the axial direction of the transmission shaft, and the guide cylinder is inserted into the cavity of the first wheel disc.

In an alternative embodiment, the outer side wall surface of the guide cylinder is smooth, and the outer side wall surface is in clearance fit with the inner wall of the cavity.

In an alternative embodiment, the powertrain further comprises an engine and a transmission; the engine is connected with a transmission shaft of a driving wheel set of the continuously variable transmission and is used for inputting power to the driving wheel set; the gearbox is connected with a transmission shaft of a driven wheel set of the continuously variable transmission and used for receiving output power from the driven wheel set.

Compared with the related art, the all-terrain vehicle provided by the embodiment of the application has the following advantages:

the all-terrain vehicle that this application embodiment provided includes buncher, buncher's driven wheelset is used for receiving power (output torque) that comes from the initiative wheelset, and driven wheelset includes first rim plate, second rim plate, transmission shaft, gear change and transmission gear, and wherein first rim plate, second rim plate all set up with the transmission shaft is coaxial, and both are relative the transmission shaft rotates. The transmission seat is arranged between the first wheel disc and the second wheel disc, is connected with the transmission shaft and synchronously rotates with the transmission shaft; the second rim plate is connected with the gear change piece to the gear change piece can drive the transmission seat and rotate, and transmit power to the transmission shaft through the transmission seat.

Compared with the scheme that in the driven wheel set in the transmission in the related art, the fixed wheel disc of the driven wheel set is fixedly connected with the transmission shaft, namely the output torque from the driving wheel set is transmitted to the driven wheel set through the fixed wheel disc; the output torque that will come from the driving wheel group through the transmission gear in this application embodiment transmits to driven wheelset, and the transmission gear is located between first rim plate, the second rim plate, can reduce the distance between the torque input point of driven wheelset and the torque output point of driven wheelset to promote driven wheelset operating stability.

In addition to the technical problems addressed by the embodiments of the present disclosure, the technical features constituting the technical solutions, and the advantages brought by the technical features of the technical solutions described above, other technical problems solved by the all-terrain vehicles provided by the embodiments of the present disclosure, other technical features included in the technical solutions, and advantages brought by the technical features will be further explained in detail in the detailed description.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic structural view of an all-terrain vehicle provided by an embodiment of the present application;

FIG. 2 is a schematic illustration of a powertrain according to an embodiment of the present disclosure;

FIG. 3 is an exploded schematic view of the infinitely variable transmission of FIG. 2;

FIG. 4 is a schematic connection diagram of a driving wheel set, a driven wheel set and a transmission member according to an embodiment of the present disclosure;

FIG. 5 is a top view of a driven wheel set provided in an embodiment of the present application;

FIG. 6 is a sectional view taken along line A-A of FIG. 5;

FIG. 7 is a sectional view taken along line B-B of FIG. 5;

FIG. 8 is a schematic illustration of a first state of the continuously variable transmission according to the exemplary embodiment of the present disclosure at a maximum speed ratio;

FIG. 9 is a schematic second state diagram illustrating a maximum speed ratio of the continuously variable transmission provided by the embodiment of the present application;

FIG. 10 is a schematic illustration of a continuously variable transmission provided in an embodiment of the present application in a minimum speed ratio state;

FIG. 11 is a schematic illustration of a first angular split of a driven wheel set according to an embodiment of the present application;

FIG. 12 is a second angular split schematic view of a driven wheel set provided in accordance with an embodiment of the present application;

FIG. 13 is an exploded view of the embodiment of the present application showing the connection of the transmission base and the transmission shaft;

FIG. 14 is a first schematic view illustrating the assembly of the slider, the rolling elements and the second wheel disc according to the embodiment of the present application;

FIG. 15 is a second schematic view illustrating an assembly of the slider, the rolling elements, and the second wheel according to an embodiment of the present application;

FIG. 16 is a schematic assembly view of the slider, the rolling elements and the transmission according to an embodiment of the present application;

FIG. 17 is an exploded view of the slider and slider mount connection provided in accordance with an embodiment of the present application;

fig. 18 is a schematic illustration of an insertion of a first wheel disc and a second wheel disc provided in an embodiment of the present application.

Description of reference numerals:

10-a driven wheel set;

11-a first wheel;

111-cylindrical unthreaded hole;

12-a second wheel;

121-a guide groove; 122-a guide cylinder;

13-driven wheel transmission shaft;

14-a transmission seat;

141-an annular sleeve; 142-a rolling member; 143-pin axis; 144-annular positioning groove; 145-gear teeth;

15-a transmission;

151-limiting groove; 152-a guide chute;

16-a return spring;

17-a power conducting component;

171-a slide; 172-a slider mount;

18-rolling bearings;

20-a belt;

30-a driving wheel set;

31-driving wheel fixing wheel disc; 32-driving wheel moving wheel disc; 33-driving wheel transmission shaft; 34-driving wheel slope board; 35-a limiting block; 36-a speed change slider; 37-a return spring; 38-spring mount; 39-a stop collar;

40-a housing;

41-an air inlet pipe; 42-an air outlet pipe;

100-continuously variable transmission;

200-a gearbox;

300-an engine;

400-a frame;

500-front axle drive shaft;

610-front wheels;

620-rear wheel.

Detailed Description

As described in the background art, the following wheel sets of the continuously variable transmissions of the all-terrain vehicles of the related art have a problem of poor operational stability, and the inventors have found that the problem occurs because the continuously variable transmissions of the related art include a driving wheel set, a following wheel set, and a belt, and the driving wheel set and the following wheel set transmit power through the belt; wherein driven wheelset includes from the fixed rim plate of driving wheel, from driving wheel removal rim plate and from driving wheel transmission shaft, from driving wheel fixed rim plate with from driving wheel transmission shaft fixed connection to can transmit the output torque who comes from the driving wheelset to from the driving wheel transmission shaft, and transmit to the gearbox from the driving wheel transmission shaft. However, the distance between the torque input point of the driven wheel set and the torque output point of the driven wheel set is large, which affects the operation stability of the driven wheel set.

To solve the above technical problem, an embodiment of the present application provides an all-terrain vehicle, and its continuously variable transmission includes driven wheelset, driving wheel group, speed change spare and transmission gear, wherein, the first rim plate of driven wheelset, second rim plate all with the coaxial setting of transmission shaft, and both homoenergetic are relative the transmission shaft rotates.

Furthermore, a transmission seat is arranged between the first wheel disc and the second wheel disc, and the transmission seat is connected with the transmission shaft and synchronously rotates with the transmission shaft; the second rim plate is connected with the gear change piece to the gear change piece can drive the transmission seat and rotate, and transmit power to the transmission shaft through the transmission seat. So set up the accessible transmission seat and will come from the output torque transmission of driving wheel group to driven wheelset, and the transmission seat is located between first rim plate and the second rim plate, can reduce the distance between the torque input point of driven wheelset and the torque output point of driven wheelset to promote driven wheelset operating stability.

In order to make the aforementioned objects, features and advantages of the embodiments of the present application more comprehensible, embodiments of the present application are described in detail below with reference to the accompanying drawings. It is to be understood that the described embodiments are merely a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

As shown in fig. 1 and fig. 2, an all-terrain vehicle provided by the embodiment of the present application includes a frame 400, and a power assembly, a front wheel 610 and a rear wheel 620 disposed on the frame 400; the powertrain includes an engine 300, a transmission 200 and the continuously variable transmission 100, wherein the engine 300 is in transmission connection with the continuously variable transmission 100, and when the engine 300 is in operation, the reciprocating motion of the piston is converted into the rotating motion of the crankshaft through the crank-connecting rod mechanism, and the power is output to the continuously variable transmission 100 through the crankshaft.

As shown in fig. 3 and 4, the continuously variable transmission 100 according to the embodiment of the present disclosure includes a housing 40, and a driving wheel set 30, a driven wheel set 10 and a transmission member disposed in the housing 40, wherein the driving wheel set 30 and the driven wheel set 10 transmit power through the transmission member, and the driving wheel set 30 receives output power from an engine 300 and transmits the output power to the driven wheel set 10 through the transmission member.

For example, the transmission member in the embodiment of the present application may be a belt 20, and the driving pulley set 30 and the driven pulley set 10 transmit power through the belt 20, and realize stepless speed change through automatic change of the driving radius of the belt 20 on the driving pulley set 30 and the input radius of the belt 20 on the driven pulley set 10.

Further, a driven wheel transmission shaft of the driven wheel set 10 is in transmission connection with the differential, and outputs power to the left end and the right end of the rear axle through the differential, and drives the rear wheels 620 of the all-terrain vehicle to rotate. Furthermore, the transmission shaft of the driven wheel set 10 is in transmission connection with the front axle driving shaft 500 of the gearbox 200, sequentially passes through the front axle driving shaft, the front transmission shaft, the front axle input shaft and the front driving axle, and then drives the left and right front wheels 610 of the all-terrain vehicle through the left and right half axles of the front axle.

With reference to fig. 5 to 10, when the continuously variable transmission 100 is in the maximum speed ratio state and the minimum speed ratio state, the structure of the driving pulley set 30 and the driven pulley set 10 and the operation process of the continuously variable transmission 100 will be described in detail in conjunction with the driving radius of the belt 20 on the driving pulley set 30 and the input radius of the belt 20 on the driven pulley set 10.

Referring to fig. 9 and 10, the driving pulley set 30 provided in the embodiment of the present application includes a driving wheel fixing wheel disc 31, a driving wheel moving wheel disc 32, a driving wheel transmission shaft 33, and a driving wheel slope plate 34, wherein the driving wheel fixing wheel disc 31 is in transmission connection with the driving wheel transmission shaft 33 through a knurled inner hole, and the driving wheel fixing wheel disc and the driving wheel transmission shaft can rotate synchronously.

The driving wheel moving wheel disc 32 and the driving wheel slope plate 34 are oppositely arranged, and the driving wheel moving wheel disc 32 and the driving wheel slope plate 34 are respectively sleeved on the driving wheel transmission shaft 33. The driver ramp plate 34 is fixedly connected to the driver transmission shaft 33, and the driver ramp plate 34 rotates in synchronization with the driver transmission shaft 33. The driving wheel moving wheel disc 32 is provided with an inner hole matched with the driving wheel transmission shaft 33, a sliding bearing is arranged in the inner hole, and the driving wheel moving wheel disc 32 is sleeved on the driving wheel transmission shaft 33 through the sliding bearing.

The driving wheel slope plate 34 is connected with the driving wheel moving wheel disc 32 through a limiting block 35, one side of the limiting block 35 is fixed on the driving wheel slope plate 34, and the other side of the limiting block 35 is provided with a notch and is clamped with a guide rib of the driving wheel moving wheel disc 32 through the notch.

The extending direction of the guide rib of the driving wheel moving wheel disc 32 is consistent with the circumferential direction of the driving wheel transmission shaft 33, and the extending direction of the notch is consistent with the axial direction of the driving wheel transmission shaft 33; when the driving wheel moving wheel 32 moves relative to the driving wheel transmission shaft 33, the sliding direction of the driving wheel moving wheel 32 can be limited by the limiting block 35. It should be noted that a plurality of limit blocks 35 may be disposed between the driver ramp plate 34 and the driver moving wheel disc 32, and the plurality of limit blocks 35 are circumferentially disposed on the driver ramp plate 34.

An accommodating groove is formed between the driving wheel slope plate 34 and the driving wheel moving wheel disc 32, a return spring 37 and a spring mounting seat 38 are arranged in the accommodating groove, wherein the spring mounting seat 38 is sleeved on the driving wheel transmission shaft 33, and the spring mounting seat 38 is mounted on the driving wheel transmission shaft 33 through a sliding bearing, so that the spring mounting seat 38 can move along the axial direction of the driving wheel transmission shaft 33.

The spring mounting seat 38 is disposed between the driving wheel slope plate 34 and the driving wheel moving wheel disk 32, and one side of the spring mounting seat 38 close to the driving wheel moving wheel disk 32 is fixedly connected with the driving wheel moving wheel disk 32 through screws, so that the two can synchronously move or rotate relative to the driving wheel transmission shaft 33.

Reset spring 37 sets up in the cavity of spring mount 38, and reset spring 37's one end and the shaft shoulder butt of action wheel transmission shaft 33 to it is spacing to carry out the axial to reset spring 37's one end. The other end of the return spring 37 abuts against the top wall of the spring mounting seat 38, and when the return spring 37 changes in extension and contraction, the spring mounting seat 38 can move in the axial direction relative to the drive wheel transmission shaft 33.

It should be noted that a limiting sleeve 39 is arranged in the spring mounting seat 38, the limiting sleeve 39 is sleeved on the driving wheel transmission shaft 33 and axially limits one end (bottom end) of the driving wheel transmission shaft, and a certain limiting space is kept between the other end (top end) of the limiting sleeve 39 and a thrust surface of the spring mounting seat 38. When the top end of the stop collar 39 contacts the thrust surface of the spring mounting seat 38, the return spring 37 is in a compressed state, the driving radius of the corresponding belt 20 at the driving pulley set 30 is maximum, the input radius of the belt 20 at the driven pulley set 10 is minimum, and the transmission ratio of the continuously variable transmission 100 is minimum.

The driving pulley set 30 in the embodiment of the present application includes a plurality of shift sliders 36, the shift sliders 36 are uniformly distributed on the driving pulley ramp plate 34 along the circumferential direction, and under the action of the return spring 37, the shift sliders 36 are pressed between the driving pulley ramp plate 34 and the driving pulley moving disk 32.

Due to the different rotation speeds of the driving wheel transmission shaft 33 and the different centrifugal forces borne by the shifting slider 36, the shifting slider 36 can change its position under the action of the centrifugal force, thereby changing the position of the driving wheel moving wheel disk 32 on the driving wheel transmission shaft 33.

It should be noted that the drive wheel moving sheave 32 and the drive wheel fixing sheave 31 have opposite tapered surfaces to form a V-shaped groove therebetween, and accordingly, the belt 20 may be a V-shaped belt. The pulley groove is used for accommodating the belt 20, and the position of the belt 20 in the pulley groove changes along with the change of the rotating speed of the driving wheel transmission shaft 33.

Referring to fig. 8 and 9, when the engine 300 is in an idle state, the centrifugal force of the shift slider 36 is not enough to overcome the elastic force of the return spring 37, the belt 20 is pressed against the surface of the friction rotating sleeve, and the friction rotating sleeve is sleeved on the driving wheel transmission shaft 33, and part of the friction rotating sleeve is positioned in the wheel groove. The driving pulley moving sheave 32 is at the initial maximum speed ratio position where the driving radius of the belt 20 at the driving pulley set 30 is minimum, and the input radius of the belt 20 at the driven pulley set 10 is maximum.

Referring to fig. 10, when the engine 300 is accelerated from the idle state, the centrifugal force applied to the shift slider 36 is also increased continuously, the shift slider 36 uses the driving wheel slope plate 34 as a moving fulcrum and overcomes the elastic force of the return spring 37 to push the driving wheel moving wheel disc 32 to move axially toward the driving wheel fixed wheel disc 31, the side surface of the belt 20 is gradually contacted with the driving wheel moving wheel disc 32, on one hand, the friction force of the belt 20 is gradually increased after being squeezed, and the driving wheel set 30 drives the belt 20 to rotate.

On the other hand, as the driving wheel moving wheel disc 32 is pushed by the speed changing slider 36, the driving wheel moving wheel disc 32 moves axially along the driving wheel shaft, and the belt 20 correspondingly moves up and down in the V-shaped wheel groove formed between the driving wheel fixing wheel disc 31 and the driving wheel moving wheel disc 32, so as to control the moving driving radius of the belt 20. When the thrust surface of the spring mounting seat 38 contacts the stop collar 39, the shifting slider 36 is limited in displacement, and the transmission ratio of the continuously variable transmission 100 is at a minimum, i.e., the driving radius of the belt 20 on the driving pulley set 30 is at a maximum, and the input radius of the belt 20 on the driven pulley set 10 is at a minimum.

Referring to fig. 5 to 7, the driven wheel set 10 in the embodiment of the present application includes a first wheel disc 11, a second wheel disc 12, a driven wheel transmission shaft 13, a transmission 15 and a transmission seat 14; wherein, first rim plate 11, second rim plate 12 have conical surface relative to each other, and first rim plate 11 and second rim plate 12 all set up with following driving shaft 13 is coaxial to first rim plate 11 and second rim plate 12 rotate respectively and connect on following driving shaft 13.

Specifically, the inner hole of the first wheel disc 11 is provided with a rolling bearing 18, this rolling bearing 18 may be a double-row ball bearing, the first wheel disc 11 is sleeved on the driven wheel transmission shaft 13 through the double-row ball bearing, and the first wheel disc 11 can only circumferentially rotate relative to the driven wheel transmission shaft 13, but the first wheel disc 11 cannot move along the axial direction of the driven wheel transmission shaft 13, so that the first wheel disc 11 may be defined as a driven wheel fixed wheel disc.

The inner hole of the second wheel disc 12 is provided with a sliding bearing, and the second wheel disc 12 is sleeved on the driven wheel transmission shaft 13 through the sliding bearing, so that the second wheel disc 12 not only can rotate circumferentially relative to the driven wheel transmission shaft 13, but also can move along the axial direction of the driven wheel transmission shaft 13, and therefore the second wheel disc 12 can be defined as a driven wheel moving wheel disc.

First rim plate 11 and second rim plate 12 in this application embodiment have the conical surface that sets up each other relatively mutually, can form the race that holds belt 20 between the conical surface of first rim plate 11 and second rim plate 12, and the both sides quotation that faces each other of first rim plate 11 and second rim plate 12 promptly all sets up from driving wheel transmission shaft 13 slope to constitute the race that is used for holding the belt jointly.

The wheel groove can be a V-shaped groove, and the width of the position of the wheel groove close to the driven wheel transmission shaft 13 is smaller than the width of the outermost side of the wheel groove, namely the width of the groove opening of the wheel groove is larger than the groove width of the groove bottom of the wheel groove; accordingly, the belt 20 may be a V-belt.

Two side surfaces of the belt 20 are respectively contacted with the tapered surfaces of the first wheel disc 11 and the second wheel disc 12, and when the driven wheel set 10 is driven by the belt 20 to rotate, friction force is generated between the belt 20 and the first wheel disc 11 and the second wheel disc 12, so that the position of the belt 20 on the wheel groove is gradually changed, and the input radius of the belt 20 on the driven wheel set 10 is changed. Accordingly, the second disc 12 can be moved in the axial direction during this process to change the relative positions of the first disc 11 and the second disc 12.

The transmission seat 14 in this application embodiment is located between first rim plate 11 and second rim plate 12, and transmission seat 14 is connected with driven driving shaft 13 transmission, and both can synchronous rotation. The transmission seat 14 is used for receiving power from a transmission member 15, the transmission member 15 is fixedly connected with the second pulley 12, and the transmission member 15 can move axially or rotate circumferentially along with the second pulley 12 relative to the driven wheel transmission shaft 13.

For example, the transmission member 15 is sleeved on the driven wheel transmission shaft 13, and a sliding bearing is arranged between the transmission member 15 and the driven wheel transmission shaft 13, so that the transmission member 15 can rotate and move around the driven wheel transmission shaft 13; further, the transmission member 15 is fixed to one side of the second disk 12 by screws so as to rotate or move synchronously.

Further, transmission 15 in this application embodiment can drive transmission seat 14 and rotate, and transmission 15 can transmit power to transmission seat 14, and then transmits power to driven wheel transmission shaft 13 through transmission seat 14, and the input torque that receives from driven wheel set 10 is spread out through driven wheel transmission shaft 13 promptly.

When the input torque of the driving wheel set 30 is transmitted to the driven wheel set 10 through the transmission member, the transmission member can drive the first wheel disc 11 and the second wheel disc 12 to rotate, transmit power to the transmission seat 14 through the speed changing member 15, transmit the power to the driven wheel transmission shaft 13 through the transmission seat 14, and drive the driven wheel transmission shaft 13 to rotate.

Compared to the prior art transmission that transmits the output torque from the driving wheel set 30 to the driven wheel set 10 through a fixed sheave; the output torque that will come from main driving wheel group 30 is transmitted to driven wheelset 10 through driving seat 14 in this application embodiment, and driving seat 14 is located between first rim plate 11, the second rim plate 12, can reduce the distance between the torque input point of driven wheelset 10 and the torque output point of driven wheelset 10 to promote driven wheelset 10 operating stability.

As shown in fig. 11 to 13, the driving seat 14 provided in the embodiment of the present application includes an annular sleeve 141 and at least one rolling element 142, wherein the annular sleeve 141 is sleeved on the driven wheel transmission shaft 13 and is located between the first wheel disc 11 and the second wheel disc 12; the annular sleeve 141 is in transmission connection with the driven wheel transmission shaft 13, and the annular sleeve and the driven wheel transmission shaft can synchronously rotate.

The rolling member 142 is rotatably disposed at a side of the annular sleeve 141, that is, the rolling member 142 is disposed at a side of the annular sleeve 141. The rolling part 142 can rotate relative to the annular sleeve 141, and the rotating axis of the rolling part 142 and the axis of the driven wheel transmission shaft 13 form an included angle which can be 90 degrees, that is to say, the rotating axis of the rolling part 142 and the axis of the driven wheel transmission shaft 13 are mutually perpendicular, so that when the rolling part 142 is stressed, the force transmission effect can be improved, and the annular sleeve 141 and the rolling part 142 can rotate synchronously.

Further, the rolling member 142 is configured to abut against the transmission 15 to receive power from the second sheave 12. Specifically, the transmission member 15 can abut against the rolling member 142 when rotating, and can drive the rolling member 142 to rotate along with the transmission member 15, that is, when the transmission member 15 rotates, the power on the transmission member 15 can be transmitted to the rolling member 142 and transmitted to the annular sleeve 141 through the rolling member 142, so as to drive the driven wheel transmission shaft 13 to rotate.

For example, the transmission seat 14 provided in the embodiment of the present application may include an annular sleeve 141 and two rolling members 142, wherein a spline or transmission tooth 145 is disposed between the annular sleeve 141 and the driven wheel transmission shaft 13, and the two are in transmission connection through the spline or transmission tooth 145, that is, power applied to the annular sleeve 141 may be transmitted to the driven wheel transmission shaft 13 through the spline or transmission tooth 145, so as to drive the driven wheel transmission shaft 13 to rotate.

The rolling members 142 may be rollers, the two rolling members 142 may be symmetrically disposed on two sides of the annular sleeve 141, two sides of the annular sleeve 141 are respectively provided with a pin 143 for mounting the rolling members 142, and a mounting direction of the pin 143 is perpendicular to an axial direction of the driven wheel transmission shaft 13, that is, an axis of the pin 143 is perpendicular to an axis of the driven wheel transmission shaft 13.

One end of the pin 143 is fixedly connected with the annular sleeve 141, the rolling member 142 is rotatably mounted on the pin 143, and the rotation axis of the rolling member 142 is perpendicular to the axis of the driven wheel transmission shaft 13. So set up, can make the annular sleeve 141 atress even to guarantee annular sleeve 141 pivoted stability, prevent that it from appearing eccentrically.

In order to further improve the rotation stability of the annular sleeve 141, a circlip and/or a gasket is/are arranged at the position of the driven wheel transmission shaft 13 close to the annular sleeve 141, so that the annular sleeve 141 is axially limited on the transmission shaft, and the positioning accuracy of the annular sleeve 141 on the driven wheel transmission shaft 13 is improved, and the annular sleeve is prevented from moving along the axial direction.

On the basis of the above embodiments, the driven wheel set 10 provided in the embodiment of the present application further includes a return spring 16, and the return spring 16 is configured to provide a return force to the second disk 12. Referring to fig. 9, when the driven pulley set 10 is at the maximum speed ratio, the rotation radius of the belt 20 at the driven pulley set 10 is the largest, and accordingly, the belt 20 is located at the outermost side of the wheel groove of the driven pulley set 10, and the return spring 16 is in the initial state.

When the rotation radius of the belt 20 in the driven pulley set 10 becomes smaller, the second pulley 12 must overcome the elastic force of the return spring 16 so that the second pulley 12 moves along the driven pulley transmission shaft 13 in a direction away from the first pulley 11.

As shown in fig. 10, when the driven wheel set 10 is at the minimum speed ratio, the rotation radius of the belt 20 at the driven wheel set 10 is minimum, and accordingly, the belt 20 is at the innermost side of the race of the driven wheel set 10, and the return spring 16 is in a compressed state.

For optimizing the overall arrangement of driven wheelset 10, this application embodiment transmission 14 can regard as return spring 16's mount pad, that is to say that return spring 16 cover is established on driven driving shaft 13, and return spring 16's one end and transmission 14 butt, the other end and 12 butts of second rim plate to make second rim plate 12 under return spring 16's effect, second rim plate 12 is along the axial displacement from driving shaft 13.

Specifically, the annular sleeve 141 is provided with an annular positioning groove 144 along the circumferential direction thereof, and the axial direction of the annular positioning groove 144 coincides with the axial direction of the annular sleeve 141, that is, an annular groove having a certain depth is provided on the end surface of the annular sleeve 141, and the annular groove is coaxial with the annular sleeve 141.

The return spring 16 is sleeved on the driven wheel transmission shaft 13, part of the return spring 16 is positioned in the annular positioning groove 144, the end part of the return spring 16 is abutted against the bottom wall of the annular positioning groove 144, and the other end of the return spring 16 is abutted against the inner surface of the second wheel disc 12.

It can be understood that, the inner surface of the second wheel disc 12 may also be provided with a positioning structure as required to ensure that the extending and retracting direction of the return spring 16 is consistent with the axial direction of the driven wheel transmission shaft 13, so as to improve the stability of the second wheel disc 12 moving along the driven wheel transmission shaft 13.

As shown in fig. 14 to 16, the transmission member 15 in the embodiment of the present application can abut against the rolling members 142 of the transmission seat 14, so as to drive the transmission seat 14 to rotate, so as to transmit power to the transmission seat 14.

Specifically, the transmission 15 is provided with a stopper groove 151, and the stopper groove 151 is engaged with the rolling member 142. When the assembly of the driven wheel set 10 is completed, the rolling member 142 may be located in the limiting groove 151, and when the second wheel disc 12 rotates, the rolling member 142 may abut against a groove wall of the limiting groove 151, so that the rolling member 142 may rotate along with the second wheel disc 12, that is, the power transmitted to the second wheel disc 12 is transmitted to the driven wheel transmission shaft 13 through the speed changing member 15, the rolling member 142, and the annular sleeve 141, and drives the driven wheel transmission shaft 13 to rotate.

For example, the transmission member 15 includes a body and an annular sidewall, the transmission member 15 is fixed on the second wheel disc 12 through the body, and the body is sleeved on the driven wheel transmission shaft 13 and rotates relative to the driven wheel transmission shaft 13. The annular side wall is located on one side of the body and has a length extending in a direction that coincides with the axial direction of the driven wheel drive shaft 13.

The annular side wall is notched to form a retaining groove 151, and the retaining groove 151 conforms to the contour of the rolling member 142. For example, the catching groove 151 is a circular groove having a radius larger than that of the rolling member 142 so that the rolling member 142 can roll along the groove wall of the catching groove 151. It should be noted that the notch of the limiting groove 151 faces the first wheel disc 11, so that the rolling element 142 extends into the limiting groove 151.

Further, the notch of the stopper groove 151 extends to the edge of the annular side wall through the introduction passage. Illustratively, the annular side wall also has a guide chute 152, the guide chute 152 forms a guide channel, and the guide chute 152 is an arc-shaped groove obliquely arranged on the annular side wall. The guide inclined groove 152 extends in the axial direction of the driven wheel drive shaft 13, one end of the guide inclined groove 152 extends to the edge of the annular side wall, and the other end of the guide inclined groove 152 communicates with the stopper groove 151, so that the rolling member 142 can move on the continuous side wall formed by the guide inclined groove 152 and the stopper groove 151.

It should be noted that the profile dimensions of the guiding chute 152 and the limiting groove 151 are larger than the profile outer diameter of the rolling member 142; the rolling member 142 can roll along the groove walls of the limiting groove 151 and the guide chute 152. When the second wheel disc 12 moves relative to the driven wheel transmission shaft 13, the rolling member 142 can move along the side wall of the guide chute 152, so that the rolling member 142 is always abutted against the limiting groove 151 and the guide chute 152, and the stability of the second wheel disc 12 in transmitting the power thereof to the transmission seat 14 is ensured.

Because first rim plate 11 of this application embodiment rotates to be connected on driven wheel transmission shaft 13, consequently on the power on the first rim plate 11 need transmit to second rim plate 12, transmit to driven wheel transmission shaft 13 through derailleur 15, transmission seat 14 again on.

The continuously variable transmission 100 provided by the embodiment of the application further comprises a power transmission assembly 17, the power transmission assembly 17 is connected to the first pulley 11, the power transmission assembly 17 can rotate synchronously with the first pulley 11, and the power transmission assembly 17 is used for transmitting power to the second pulley 12.

As shown in fig. 17, and with reference to fig. 14 and 15, the power transmission assembly 17 according to the embodiment of the present application includes at least one sliding block 171, the sliding block 171 is disposed on a side of the first wheel disc 11 facing the second wheel disc 12, the second wheel disc 12 is provided with a guide groove 121 engaged with the sliding block 171, and the sliding block 171 is embedded in the guide groove 121; the slider 171 may abut against the groove wall of the guide groove 121 in the circumferential direction of the second disk 12.

For example, when the driven wheel set 10 is assembled, the sliding block 171 is located in the guide groove 121, and both sides of the sliding block 171 keep a certain interval with the groove wall of the guide groove 121; when the driven wheelset 10 starts to rotate, first rim plate 11, second rim plate 12 synchronous rotation, when rotating in-process gear change 15 and the rolling piece 142 contact of transmission 14, the rolling resistance that produces this moment acts on second rim plate 12, because the rolling resistance of first rim plate 11 is less than the rolling resistance of second rim plate 12, first rim plate 11 second rim plate 12 circumference deflection relatively, and then first rim plate 11 drives the relative second rim plate 12 rotation of slider 171, slider 171 can with the lateral wall butt of guide way 121.

So set up, when driven wheelset 10 starts the rotation, because the rotation resistance of first rim plate 11 is different with the rotation resistance of second rim plate 12, the amount of deflection appears in belt 20, causes belt 20 to damage easily, and when the both sides atress of belt 20 was uneven in the embodiment of this application, first rim plate 11 second rim plate 12 circumference deflection relatively to prevent that the amount of deflection from appearing in belt 20, promote belt 20's life.

Furthermore, when the driven wheel set 10 rotates, the sliding block 171 can abut against the guiding groove 121, so that a positive pressure is formed between the first wheel disc 11 and the second wheel disc 12, and a friction force along the axial direction is formed, so as to block the axial movement of the first wheel disc 11 and the second wheel disc 12 on the driven wheel transmission shaft 13, and it can be avoided that the second wheel disc 12 moves too fast when the all-terrain vehicle speeds up, that is, the groove width of the wheel groove of the driven wheel set 10 changes too fast when the all-terrain vehicle speeds up, so that the input radius of the belt 20 on the driven wheel set 10 is rapidly reduced, and the situation of insufficient output torque occurs.

On the basis of the above embodiment, the power transmission assembly 17 provided by the embodiment of the present application further includes a slider mounting bracket 172, the slider mounting bracket 172 is used for mounting the slider 171, and the slider mounting bracket 172 and the first wheel disc 11 are fixedly connected together by screws.

For example, the power transmission assembly 17 includes two sliding blocks 171, the sliding block mounting frame 172 includes two mounting lugs, the two mounting lugs are located at one end of the sliding block mounting frame 172, the two mounting lugs are symmetrically disposed, and each mounting lug is provided with one sliding block 171, that is, the two sliding blocks 171 are symmetrically disposed at one end of the sliding block mounting frame 172. The other end of the slider mounting bracket 172 is fixedly connected to the first wheel 11, so that the two sliders 171 can rotate synchronously with the first wheel 11. So set up, two slider 171 symmetries set up on slider mounting bracket 172, can promote first rim plate 11 and second rim plate 12 power transmission's homogeneity and stability.

Further, the sliding block 171 provided in the embodiment of the present application is rotatable relative to the sliding block mounting bracket 172, and the rotation axis of the sliding block 171 is perpendicular to the axis of the driven wheel transmission shaft 13. For example, the slider 171 is mounted on the slider mounting bracket 172 by a pin, and the slider 171 is rotatable along the pin, the axial direction of which is perpendicular to the axial direction of the driven wheel transmission shaft 13.

With this arrangement, when the slider mounting bracket 172 is fixed to the first wheel 11, if there is a deviation in mounting between the two, the slider 171 inclines in the guide groove 121, and when the slider 171 abuts against the groove wall of the guide groove 121, the slider 171 can rotate at a certain angle, so that the abutting area of the slider 171 against the groove wall of the guide groove 121 is increased, and the power of the first wheel 11 can be uniformly transmitted to the second wheel 12 through the slider 171.

It should be understood that the sliding block 171 may be a rectangular sliding block, and the length direction of the sliding block 171 is consistent with the extending direction of the guiding groove 121, and the extending direction of the guiding groove 121 is consistent with the axial direction of the driven wheel transmission shaft 13, so as to further increase the abutting area between the sliding block 171 and the groove wall of the guiding groove 121, and enable the power of the first wheel disc 11 to be uniformly transmitted to the second wheel disc 12 through the sliding block 171.

Further, referring to fig. 14, in the embodiment of the present application, the power transmission assembly 17 and the transmission seat 14 may be respectively located in different circumferential directions of the second wheel 12, for example, two rectangular sliding blocks 171 in the power transmission assembly 17 are symmetrically arranged on the second wheel 12, and a connecting line of the two rectangular sliding blocks 171 extends in a first direction; the transmission seat 14 comprises two rolling members symmetrically arranged, a connecting line between the two rolling members extends along a second direction, and the first direction is perpendicular to the second direction; in other words, the rectangular slider 171 and the rolling elements are arranged offset from each other in the circumferential direction of the second disk 12. So set up, can optimize the interior installation space of driven wheelset.

As shown in fig. 18, the second wheel disc 12 provided in the embodiment of the present application is further provided with a guide cylinder 122, the guide cylinder 122 is located on one side of the second wheel disc 12 facing the first wheel disc 11, an outer wall of the guide cylinder 122 is cylindrical, and an axial direction of the guide cylinder 122 is consistent with an axial direction of the driven wheel transmission shaft 13. The guide cylinder 122 is configured to be capable of being inserted into a cavity of the first wheel disc 11 to assist in guiding the second wheel disc 12 when moving in the axial direction of the driven wheel transmission shaft 13, so as to improve the movement stability of the second wheel disc 12.

Further, the surface of the outer wall of the guide cylinder 122 is a smooth surface, the first wheel disc 11 is provided with a cylindrical unthreaded hole 111, and the guide cylinder 122 can be inserted into the cylindrical unthreaded hole 111; the outer wall surface of the guide cylinder 122 is in clearance fit with the inner wall of the cylindrical unthreaded hole 111, and the guide cylinder 122 can be ensured to slide in the cylindrical unthreaded hole 111 along the axial direction of the driven wheel transmission shaft 13; and the belt 20 can be kept in contact with the outer wall of the guide cylinder 122 when the driven wheel set 10 is in the state of the minimum speed ratio.

First rim plate 11 among the prior art and from driving wheel transmission shaft 13 fixed connection, carry out circumference spacing and transmission power through the keyway structure between first rim plate 11 and the second rim plate 12, the outer wall of the guide cylinder 122 of second rim plate 12 has the keyway, when the belt 20 is laminated with the outer wall of guide cylinder 122, the area of taking the tooth of belt 20 leads to belt 20 to damage easily with the keyway friction, and the piece that belt 20 produced in the operation process can get into the inside of driven wheelset 10 through the keyway, influence driven wheelset 10 operational reliability.

Compared with the prior art, the outer wall surface of the guide cylinder 122 of the second wheel disc 12 in the embodiment of the application is smooth, so that the belt teeth of the belt 20 can be prevented from being worn when the belt 20 is attached to the outer wall of the guide cylinder 122; further, the outer wall surface of the guide cylinder 122 is in clearance fit with the inner wall of the cavity of the first wheel disc 11, so that the chips generated by the belt 20 in the operation process can be prevented from entering the interior of the driven wheel set 10, and the operation reliability of the driven wheel set 10 is improved.

Referring to fig. 2 and 3, in order to improve the heat dissipation performance of the continuously variable transmission 100 according to the embodiment of the present disclosure, the continuously variable transmission 100 further includes an air inlet pipe 41 and an air outlet pipe 42, the housing 40 is provided with an air inlet, and the air inlet is communicated with the air inlet pipe 41 to introduce air into the housing 40; the housing 40 is further provided with an air outlet, which is communicated with the air outlet pipe 42 and used for leading out the air after heat exchange to the outside of the housing 40.

For example, the housing 40 of the continuously variable transmission 100 may be provided with two air inlets, one of which is opposed to the driven wheel set 10 for cooling the driven wheel set 10; the other air inlet is opposite to the driving wheel set 30 and is used for cooling the driving wheel set 30.

Accordingly, the continuously variable transmission 100 may be provided with one intake pipe 41, and one intake pipe 41 has two branches and is respectively communicated with the two intake ports through the two branches; or the continuously variable transmission 100 has two intake pipes 41, and the two intake pipes 41 communicate with the two intake ports, respectively. One end of the air outlet pipe 42 is communicated with the air outlet, the other end of the air outlet pipe 42 may be opposite to an exhaust pipe of the engine 300, and the air flowing out of the continuously variable transmission 100 may be used to cool the exhaust pipe.

The embodiments or implementation modes in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other.

It should be noted that references in the specification to "one embodiment," "an example embodiment," "some embodiments," etc., indicate that the embodiment described may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is within the knowledge of one skilled in the art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.

In general, terms should be understood at least in part by their use in context. For example, the term "one or more" as used herein may be used to describe any feature, structure, or characteristic in the singular or may be used to describe a combination of features, structures, or characteristics in the plural, depending, at least in part, on the context. Similarly, terms such as "a" or "the" may also be understood to convey a singular use or to convey a plural use, depending at least in part on the context.

Furthermore, spatially relative terms, such as "below," "lower," "above," "upper," and the like, may be used herein for ease of description to describe one element or feature's illustrated relationship to another element or feature. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and these modifications or substitutions do not depart from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An all-terrain vehicle comprising a frame, front and rear wheels supporting the frame, and a powertrain disposed on the frame, wherein the powertrain comprises a continuously variable transmission having a driving wheel set, a driven wheel set, a drive member, and a power transmission component;

the driving wheel set transmits power to the driven wheel set through the transmission piece, and the driven wheel set comprises a first wheel disc, a second wheel disc, a transmission shaft, a speed change piece and a transmission seat; the first wheel disc and the second wheel disc are coaxially arranged with the transmission shaft, the first wheel disc and the second wheel disc rotate relative to the transmission shaft, and the second wheel disc can axially move along the transmission shaft; the two disc surfaces of the first wheel disc and the second wheel disc, which face each other, are obliquely arranged relative to the transmission shaft so as to jointly form a wheel groove for accommodating the transmission part, and the width of the notch of the wheel groove is greater than the groove width of the groove bottom of the wheel groove;

the transmission seat is positioned between the first wheel disc and the second wheel disc, the transmission seat is connected to the transmission shaft and rotates synchronously with the transmission shaft, the second wheel disc is connected with the speed change piece, and the speed change piece is configured to drive the transmission seat to rotate so as to transmit power to the transmission shaft through the transmission seat;

the power transmission assembly is connected to the first wheel disc, the first wheel disc transmits power to the second wheel disc through the power transmission assembly, and the power transmission assembly and the transmission seat are located in different circumferential directions of the second wheel disc respectively.

2. The all-terrain vehicle of claim 1, characterized in that the drive mount comprises an annular sleeve and at least one rolling element;

the annular sleeve is sleeved on the transmission shaft and rotates synchronously with the transmission shaft;

the rolling piece is rotatably arranged on one side of the annular sleeve, an included angle is formed between the rotating axis of the rolling piece and the axis of the transmission shaft, and the rolling piece is configured to abut against the speed changing piece so as to transmit power to the second wheel disc.

3. The all-terrain vehicle of claim 2, characterized in that the axes of rotation of the rolling members and the axis of the drive shaft are mutually perpendicular.

4. The all-terrain vehicle of claim 3, characterized in that the driven wheel set further comprises a return spring;

the return spring is sleeved on the transmission shaft, one end of the return spring is abutted to the transmission seat, and the other end of the return spring is abutted to the second wheel disc, so that the second wheel disc can move along the axial direction of the transmission shaft relatively.

5. The all-terrain vehicle of claim 4, characterized in that the annulus is provided with annular positioning slots having an axial direction that coincides with an axial direction of the annulus;

one end of the return spring is abutted to the annular positioning groove, and the other end of the return spring is abutted to the inner surface of the second wheel disc.

6. The all-terrain vehicle of any of claims 2-5, characterized in that a spline or a gear tooth is provided between the annular sleeve and the transmission shaft and is in driving connection therewith.

7. The all-terrain vehicle of claim 6, characterized in that the sidewall of the annular sleeve is provided with a pin;

the axis of the pin shaft is perpendicular to the axis of the transmission shaft, and the rolling part is rotatably connected to the pin shaft.

8. The all-terrain vehicle of claim 6, characterized in that the transmission shaft is provided with a circlip and/or a washer for axially limiting the annular sleeve.

9. The all-terrain vehicle of any of claims 1-5, characterized in that a rolling bearing is disposed between the first wheel disc and the drive shaft, through which rolling bearing the first wheel disc is rotationally connected to the drive shaft;

a sliding bearing is arranged between the second wheel disc and the transmission shaft, and the second wheel disc is connected to the transmission shaft through the sliding bearing.

10. The all-terrain vehicle of any of claims 2-5, characterized in that the transmission has a limit groove that cooperates with the rolling member, the rolling member and a groove wall of the limit groove cooperating in abutment to transmit power to the second wheel disc.

11. The all-terrain vehicle of claim 10, characterized in that the transmission includes an annular sidewall extending in an axial direction of the drive shaft;

the annular side wall is provided with a notch to form the limit groove, and a notch of the limit groove faces the first wheel disc so that the rolling piece can stretch into the limit groove.

12. The all-terrain vehicle of claim 11, characterized in that the annular sidewall further defines guide chutes;

one end of the guide chute extends to the edge of the annular side wall, and the other end of the guide chute is communicated with the limiting groove.

13. The all-terrain vehicle of claim 12, characterized in that the guide chutes and the retaining grooves have a profile dimension greater than the outer diameter of the profile of the rolling members;

the rolling piece can roll along the groove walls of the limiting groove and the guide chute.

14. The all-terrain vehicle of any of claims 2-5, characterized in that the power conducting component comprises a slider;

the sliding block is arranged on one side, facing the second wheel disc, of the first wheel disc, the second wheel disc is provided with a guide groove matched with the sliding block, and the sliding block is embedded in the guide groove;

the sliding block is configured to rotate circumferentially relative to the second wheel disc and is in contact with the groove surface of the guide groove to drive the second wheel disc to rotate.

15. The all-terrain vehicle of claim 14, characterized in that the power transmission assembly further comprises a slider mount;

the slider mounting bracket is used for mounting the slider, and the slider mounting bracket is fixedly connected with the first wheel disc.

16. The all terrain vehicle of claim 15 wherein the slider is mounted on the slider mount by a pin, and the slider rotates relative to the slider mount.

17. The all-terrain vehicle of claim 16, characterized in that the slider is a rectangular slider and the guide slot extends in a direction that is coincident with the axial direction of the drive shaft.

18. The all terrain vehicle of claim 14 wherein the sliders and the rollers are offset from each other in different circumferential directions of the second wheel.

19. The all-terrain vehicle of any of claims 1-5, characterized in that the second wheel disc has a guide cylinder facing the first wheel disc, the outer wall of the guide cylinder being cylindrical;

the axial direction of the guide cylinder is consistent with the axial direction of the transmission shaft, and the guide cylinder is inserted into the cavity of the first wheel disc.

20. The all-terrain vehicle of claim 19, characterized in that the outer sidewall surface of the guide cylinder is smooth and the outer sidewall surface is a clearance fit with the inner wall of the cavity.

21. The all-terrain vehicle of claim 1, characterized in that the powertrain further comprises an engine and a transmission;

the engine is connected with a transmission shaft of a driving wheel set of the continuously variable transmission and is used for inputting power to the driving wheel set;

the gearbox is connected with a transmission shaft of a driven wheel set of the continuously variable transmission and used for receiving output power from the driven wheel set.