CN111391575A - Electrically driven wheel based on non-pneumatic tire - Google Patents

Abstract

The invention discloses an electric drive wheel based on a non-pneumatic tire, comprising: an electric wheel hub, a non-pneumatic tire and a fastening cover; the non-pneumatic tire is a circular structure, the electric wheel hub is a cylindrical structure, and the The non-pneumatic tire is coaxially sleeved on the outer circumference of the electric wheel hub and has an interference fit with it; the fastening cover is a cylindrical structure with one end open, which is coaxially embedded in the non-pneumatic tire and is connected to the electric wheel hub through fasteners. Fixed connection; the wheel of the present invention integrates the electric wheel hub and the non-pneumatic tire into a whole, which not only enables each wheel to have a good independent driving ability, but also can effectively prevent the occurrence of tire blowout and tire breakout, and at the same time effectively reduce the spring rate. The lower quality is beneficial to improve the mobility, comfort and operational reliability of the vehicle.

Description

An electric drive wheel based on non-pneumatic tires

technical field

The present invention relates to the technical field of vehicles, in particular to an electric drive wheel based on a non-pneumatic tire.

Background technique

In the past 20 years, with the continuous development of electrification and electric drive technology, the volume power density of automotive motors has been continuously improved. The electric drive wheels integrating the motor into the rim have attracted close attention and a lot of R&D investment from home and abroad. Because its wheel torque and rotational speed can be independently and precisely controlled, it can achieve high maneuverability, and the power system is arranged inside the rim, which saves space in the vehicle and is beneficial to the modularization and overall layout of the vehicle. Therefore, from the civilian market In the military field, electric drive wheel products have emerged one after another. In the civil field, there are electric drive wheels with outer rotor solutions represented by Protean; in the field of military and special vehicles, in order to improve the torque density of electric drive wheels and reduce the volume and mass, most of them use inner rotor motors to match planetary The technical scheme of the reducer.

In order to get rid of the risk of tire blowout and improve the easy maintenance of vehicles, many tire manufacturers at home and abroad have successively launched non-pneumatic tires based on high-performance rubber, polymer composite materials and other elastic materials, most of which are based on web-shaped and honeycomb-shaped tires. Elastic topological support structures, such as Tweel and Uptis launched by Michelin, TurfCommand launched by Goodyear, etc. Non-pneumatic tires have been the first to be used in special-purpose vehicles (such as all-terrain vehicles, loading and unloading forklifts, etc.). However, these are all vehicles driven by traditional internal combustion engines, and the driving speed is not high. In high-speed electric drive vehicles, especially high-speed electric drive wheel devices, the application of non-pneumatic tires is rarely seen.

On the one hand, although extensive progress has been made in the research and development of electric drive wheels, the electric drive wheels that can be seen on the market for vehicles with more than four wheels are all based on traditional pneumatic tire solutions. In-wheel motors, deceleration mechanisms and other components bring about the problem of increased unsprung mass, which will seriously affect the ride comfort and handling stability of the vehicle. The characteristics of traditional pneumatic tires are difficult to further improve the adverse effects of unsprung mass. More seriously, the increased unsprung mass will bring about more severe road impact vibration, which will further increase the risk of tire blowout and affect the safety of vehicle driving, which is also an unavoidable problem with pneumatic tires.

On the other hand, the existing non-pneumatic tires do not carry out targeted optimization design for the application of medium and heavy special vehicles and high-power electric drive wheels, so there are some problems:

1. The driving conditions of special vehicles are relatively harsh, especially when doing some complex high-mobility actions, the comprehensive action of the vertical force, longitudinal force, lateral force, and return moment, etc., which the wheels are subjected to, has a large amplitude. And the changes are drastic; traditional pneumatic tires realize the tight fit between the tire and the rim through the expansion of high-pressure gas in the tire, and are prone to accidental "tipping off" accidents. Non-pneumatic tires require special installation and fastening devices to achieve Firm and reliable fit between the electric drive hubs and easy disassembly at the same time;

2. When the wheel turns and encounters bumps and uneven road surfaces, due to the existence of factors such as the caster angle of the wheel kingpin and the camber angle, it is difficult for the tread to maintain sufficient parallel contact with the ground at all times. In this case, pneumatic tires can fully deform the tread through the free flow of "isotropic" high-pressure gas in the tire, so as to achieve sufficient and good contact with the ground; non-pneumatic tires mostly use special topological structures The elastic material realizes support and shock absorption, and the "anisotropy" of its topological support structure is not conducive to sufficient and good contact between the tread and the ground, and the adhesion performance of the tire is poor;

3. The in-wheel motor and transmission mechanism in the electric drive wheel increase the unsprung mass, which adversely affects the ride comfort of the vehicle and the adhesion performance of the wheel. The existing non-pneumatic tire structure does not carry out special development for this factor. consideration and optimization design.

In addition, most of the current non-pneumatic tire designs are only suitable for medium and low-speed vehicles (vehicle speeds below 60km/h) in special driving scenarios, such as single-occupant all-terrain vehicles and loading and unloading forklifts. Driving high-speed vehicles (the maximum speed can reach 100km/h), such as military tactical vehicles and police anti-riot vehicles, due to the limitations of non-pneumatic tires in terms of shock absorption performance, adhesion performance, installation firmness, etc., they are not yet fully competent.

Therefore, in order to achieve a sufficient matching combination between non-pneumatic tires and electric drive wheels to improve the overall performance of the vehicle and make it more suitable for applications on complex roads and higher driving speeds, it is necessary to design a non-pneumatic-based Electric drive wheels with tires.

SUMMARY OF THE INVENTION

In view of this, the present invention provides an electric drive wheel based on non-pneumatic tires, which can not only make each wheel have better independent driving ability, but also can effectively prevent tire blowout, and at the same time effectively reduce the unsprung mass, thereby effectively reducing the unsprung mass. It is beneficial to improve the mobility, comfort and operational reliability of the vehicle.

The technical scheme of the present invention is: an electric drive wheel based on a non-pneumatic tire, comprising: an electric wheel hub, a non-pneumatic tire and a fastening cover; the non-pneumatic tire is a circular structure, and the electric wheel hub is a cylindrical structure , the non-pneumatic tire is coaxially sleeved on the outer circumference of the electric wheel hub and has an interference fit with it; the fastening cover is a cylindrical structure with one end open, which is coaxially embedded in the non-pneumatic tire, and is inserted into the non-pneumatic tire through a fastener Fixed connection with electric wheel hub.

Preferably, the electric wheel hub comprises: brake calipers, disc brakes, high-speed inner rotor permanent magnet synchronous motor, planetary reduction mechanism and wheel hub outer ring;

The outer ring of the hub is a cylindrical structure with one end open, and a hollow center shaft is provided in the axial direction; the high-speed inner rotor permanent magnet synchronous motor is coaxially supported on the outer periphery of the center shaft through the bearing B, as the motor hub. The prime mover part; the planetary reduction mechanism is coaxially installed between the high-speed inner rotor permanent magnet synchronous motor and the outer ring of the wheel hub, and is used to decelerate and increase the torque for the electric wheel hub; the high-speed inner rotor permanent magnet synchronous motor shaft More than one brake caliper is arranged in the circumferential direction of the end portion, one end of the disc brake is arranged in the brake caliper, and the other end is connected with the inner key of the central shaft to provide braking effect for the wheel.

Preferably, the high-speed inner rotor permanent magnet synchronous motor comprises: a motor housing, a motor stator, a motor rotor and a motor output shaft;

The motor output shaft is a hollow shaft, which is coaxially supported on the outer periphery of the central shaft by the bearing B; the motor housing is an annular cavity structure, which is coaxially supported on the outer periphery of the rear end of the motor output shaft by the bearing A107, and the planetary The deceleration mechanism is coaxially fixed on the outer periphery of the front end of the motor output shaft; the motor stator and the motor rotor are coaxially installed in the motor housing, wherein the motor stator is coaxially arranged outside the motor rotor, and the motor rotor is coaxially fixed on the motor output. the periphery of the shaft.

Preferably, the planetary reduction mechanism includes: a sun gear, a planetary gear, an outer ring gear and a planetary cage; the sun gear is coaxially fixed on the outer circumference of the front end of the motor output shaft; the outer ring gear is coaxially fixed on the motor the front end of the casing; the planetary cage is uniformly fixed on the inner end surface of the front end of the outer ring of the hub in the circumferential direction; each planetary cage is coaxially mounted with a planetary gear, and the planetary gear is respectively connected with the sun gear and the outer gear Ring engagement.

Preferably, a suspension interface is also installed on the outer end surface of the rear end of the motor housing for connecting with the suspension of the vehicle body.

Preferably, the non-pneumatic tire comprises: a tire inner ring, a topological support body, a cushioning and shock absorption layer and a high wear-resistant tread;

The inner ring of the tire and the topological support body are both composed of elastic materials and are annular structures, and the topological support body is coaxially fixed on the inner ring of the tire; the buffer and shock absorption layer is an annular high-elasticity cavity, which is coaxially fixed On the outer circumference of the topological support body; the high wear-resistant tread is an annular structure, which is coaxially fixed on the outer circumference of the buffering and shock-absorbing layer.

Preferably, the topological support body adopts a web structure or a honeycomb structure uniformly arranged in the circumferential direction.

Preferably, the outer wall of the buffering and shock absorbing layer is made of elastic material, and the inside thereof is filled with ETPU.

Preferably, the relative thicknesses of the topological support body and the buffering and damping layer in the radial direction are adjustable.

Preferably, the fastening cover includes: an end panel and a claw-shaped structure; the end panel is a disc-shaped structure, the claw-shaped structure is a serrated annular structure, and the claw-shaped structure is perpendicular to the end panel, and the two are integrated A cylindrical structure with one end open is formed by molding; the claw structure is fixedly connected with the electric wheel hub after passing through the hollow part in the topological support body.

Beneficial effects:

(1) The wheel of the present invention integrates the electric wheel hub and the non-pneumatic tire into one, which not only enables each wheel to have a good independent driving ability, but also can effectively prevent the occurrence of tire blowout and tire breakout, and at the same time effectively reduce the spring rate. The lower quality is beneficial to improve the mobility, comfort and operational reliability of the vehicle.

(2) The high-speed inner rotor permanent magnet synchronous motor in the electric hub of the wheel of the present invention can significantly improve the power density of the electric hub, but the high speed of the motor will cause its working speed to not match the actual working speed of the wheel. A planetary deceleration mechanism is added between the output shaft of the rotor permanent magnet synchronous motor and the outer ring of the wheel hub, which can effectively balance the mismatch between the high speed of the motor and the actual working speed of the wheel.

(3) The arrangement of the rear suspension interface of the wheel motor housing of the present invention is beneficial to the connection with the vehicle body suspension.

(4) The non-pneumatic tire of the wheel of the present invention adopts a double-structure layer design, which can not only cooperate well with the electric wheel hub, but also can effectively support, and can effectively control the shock absorption effect under the condition of effectively reducing the unsprung mass.

(5) In the non-pneumatic tire of the present invention, the relative thicknesses of the topological support body and the buffer and shock absorption layer can be adjusted, which can effectively balance the support function and shock absorption function of the two, and at the same time, is conducive to reducing the unsprung mass.

(6) The claw-shaped structure provided in the fastening cover of the present invention is convenient to pass through the hollow part in the topological support body, and is beneficial to further fasten the non-pneumatic tire and the electric wheel hub after being fixed with the electric wheel hub.

Description of drawings

Figure 1 is a front view of the wheel of the present invention.

Fig. 2 is a partial cross-sectional view of the wheel of the present invention (only the tire is cut away).

Figure 3 is an exploded view of the wheel of the present invention.

Figure 4 is a sectional view of the wheel of the present invention.

FIG. 5 is a front view of the non-pneumatic tire of the present invention (using a web structure as a topological support body).

FIG. 6 is a front view of the non-pneumatic tire in the present invention (using a honeycomb structure as a topological support body).

7 is a cross-sectional view of a non-pneumatic tire in the present invention.

Among them, 1-electric hub, 101-motor housing, 102-brake caliper, 103-disc brake, 104-motor stator, 105-motor rotor, 106-motor output shaft, 107-bearing A, 108-sun wheel, 109-planet gear, 110-hub outer ring, 111-bearing B, 112-outer ring gear, 113-planet cage, 114-central shaft, 115-limit flange, 116-suspension interface, 2- Non-pneumatic tire, 201-Tire inner ring, 202-Topological support body, 203-Cushion shock absorption layer, 204-High abrasion tread, 3-Fixed cover, 301-End panel, 302-Claw structure, 4- Fasteners, 401 - Bolt A, 402 - Bolt B.

Detailed ways

The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

Example 1:

This embodiment provides an electric drive wheel based on non-pneumatic tires, which not only enables each wheel to have a good independent driving capability, but also can effectively prevent tire blowouts, and at the same time effectively reduce the unsprung mass, which is conducive to improving the The mobility, comfort and operational reliability of the vehicle.

As shown in Figure 1-3, the wheel includes: an electric wheel hub 1, a non-pneumatic tire 2 and a fastening cover 3; as shown in Figure 4-7, the electric wheel hub 1 includes: a brake caliper 102, a disc brake 103, a high-speed The inner rotor permanent magnet synchronous motor, the planetary reduction mechanism and the hub outer ring 110; the high speed inner rotor permanent magnet synchronous motor includes: the motor housing 101, the motor stator 104, the motor rotor 105 and the motor output shaft 106; the planetary reduction mechanism includes: the sun Wheel 108 , planetary gear 109 , outer ring gear 112 and planetary cage 113 ; Non-pneumatic tire 2 includes: tire inner ring 201 , topological support body 202 , cushioning layer 203 and high wear-resistant tread 204 ; Fastening cover 3 Including: an end panel 301 and a claw structure 302 .

The connection relationship of the wheel is as follows: the non-pneumatic tire 2 is an annular structure as a whole, and the topological support body 202 and the buffering and shock absorption layer 203 are double-structure layers of the non-pneumatic tire 2; wherein, the tire inner ring 201 and the topological support body 202 are both composed of The topological support body 202 is coaxially fixed on the inner ring 201 of the tire, and the topological support body 202 adopts a web structure or a honeycomb structure uniformly arranged along the circumferential direction. It can play a supporting role, and can also be used to absorb large-scale and low-frequency shocks from the ground; the buffer shock-absorbing layer 203 is an annular cavity structure, which is composed of elastic materials (such as high-strength rubber materials) to form the outer wall of the cavity, and its interior Filled with a large number of small polyurethane thermoplastic foam particles (ETPU) to form a highly elastic cavity with mechanical properties similar to isotropic, which can not only help absorb small-amplitude and high-frequency vibrations from the ground, but also can be used when the wheels are tilted and In the case of bumps and uneven road surfaces, the extrusion cavity is deformed to make the wheel and the road surface have more sufficient contact and adhesion, and the buffer and shock absorption layer 203 is coaxially fixed on the outer circumference of the topological support body 202; high wear-resistant tires The surface 204 is an annular structure, which is coaxially fixed on the outer periphery of the buffering and shock-absorbing layer 203;

The hub outer ring 110 is a cylindrical structure with one end open, the tire inner ring 201 is arranged on the outer periphery of the hub outer ring 110 with an interference fit, and one end of the hub outer ring 110 (let it be the axial rear end) is provided with a limit flange for use For the axial limit of the tire inner ring 201;

The end plate 301 is a disc-shaped structure, the claw-shaped structure 302 is a serrated ring structure, the claw-shaped structure 302 is perpendicular to the end plate 301, and the two are integrally formed to form a cylindrical structure with one end open; the claw-shaped structure 302 passes through the topology The hollow part of the support body 202 protrudes from the axial front end of the non-pneumatic tire 2 to the axial rear end, so that the end panel 301 is in contact with the axial front end face of the hub outer ring 110, and the two are fixed by bolts B402 to realize electric The hub 1 and the non-pneumatic tire 2 are axially reinforced; the inner diameter of the claw-shaped structure 302 is slightly smaller than the outer diameter of the tire inner ring 201, and the interference fit between the two is conducive to pressing the tire inner ring 201 on the hub outer ring 110; the claw The end of the shape structure 302 protruding from the axial rear end of the non-pneumatic tire 2 is provided with a through hole, and the limit flange 115 is provided with a corresponding threaded hole, and the axis of the two holes is parallel to the radial direction of the wheel. The outer cover 3 is fastened with the outer ring 110 of the hub, and the electric hub 1 and the non-pneumatic tire 2 are radially limited, so that the two are fully compressed in the radial direction and fully tightened in the circumferential direction, so as to prevent the inner ring of the tire under heavy load. 201 rotates and slides relative to the outer ring 110 of the hub; since the radial, axial and circumferential installation and tightening are respectively performed between the electric hub 1 and the non-pneumatic tire 2, the wheel can meet the requirements of the vehicle in high-speed driving and off-road driving conditions. It is safe and reliable, and the various parts of the wheel are easy and quick to disassemble, which is conducive to replacement, maintenance and storage;

The hub outer ring 110 is axially provided with a central shaft 114; the motor output shaft 106 is a hollow shaft, which is coaxially supported on the outer periphery of the central shaft 114 by a bearing B111; the motor housing 101 is coaxially supported on the motor output shaft 106 by a bearing A107 At the outer periphery of the rear end, the sun gear 108 is coaxially fixed on the outer periphery of the front end of the motor output shaft 106; the motor stator 104 and the motor rotor 105 are respectively coaxially installed in the motor housing 101, wherein the motor stator 104 is coaxially arranged on the motor rotor 105 In addition, the motor rotor 105 composed of permanent magnets and silicon steel sheets is coaxially fixed on the outer periphery of the motor output shaft 106 as the prime mover part of the electric hub 1; the outer gear ring 112 is coaxially fixed on the front end of the motor housing 101 , which is a non-rotating fixed part; the planetary cage 113 is uniformly fixed on the inner end face of the front end of the hub outer ring 110 in the circumferential direction, as the final power output part of the entire electric wheel hub 1; each planetary cage 113 is coaxially installed There are planetary gears 109, and the planetary gears 109 mesh with the sun gear 108 and the outer ring gear 112 respectively; more than one brake caliper 102 is circumferentially arranged on the outer end surface of the rear end of the motor housing 101, the central shaft 114 is a hollow shaft, and the disc The type brake 103 includes: a braking shaft and a disc, the disc is fixed on one end of the axial direction of the braking shaft, the braking shaft is coaxially arranged in the central shaft 114, the two are connected by a key, and the outer circumference of the disc is arranged on the brake shaft. In the movable caliper 102 , when the brake caliper 102 exerts a frictional braking force on the disc brake 103 , a braking effect can be generated on the wheel through the outer ring 110 of the hub.

The working principle of the wheel: According to the rotational speed and torque relationship of each component of the planetary reduction mechanism, if the gear ratio between the outer ring gear 112 and the sun gear 108 is k, then when the outer ring gear 112 is fixed, the rotational speed of the sun gear 108 ω _S , the torque T _S and the rotational speed ω _C and the torque T _C of the planetary cage 113 satisfy the following relationship: ω _C =ω _S /(1+k), T _C = _TS (1+k); therefore, The mechanical power of the high-speed inner rotor permanent magnet synchronous motor is input from the sun gear 108 and output from the hub outer ring 110, which can achieve the effect of "deceleration and torque increase" for the mechanical power output by the high-speed inner rotor permanent magnet synchronous motor, and effectively drive the vehicle.

It should be noted that the above only takes the electric wheel hub 1 of the single-stage planetary reduction mechanism as an example for description. In the specific implementation process, according to the matching of the characteristics of the motor and the characteristics of the electric wheel hub, the electric wheel hub 1 can also adopt a series of multi-stage Planetary deceleration mechanisms, deceleration mechanisms composed of complex planetary rows, and even multi-speed (more than two gears) transmission mechanisms; various electric wheel hubs can be applied to the non-pneumatic tire and its installation structure proposed by the present invention.

Example 2:

On the basis of Example 1, by adjusting the relative thicknesses of the topological support body 202 and the buffer and shock absorption layer 203 in the radial direction, the matching degree between the two and the overall mechanical properties of the non-pneumatic tire 2 can be effectively adjusted, thereby facilitating further Mitigate the unsprung mass of this wheel and its effects.

Example 3:

On the basis of Embodiment 1 or 2, a suspension interface 116 is also installed on the outer end surface of the rear end of the motor housing 101 for connecting with the suspension of the vehicle body.

Example 4:

On the basis of Embodiment 1, 2 or 3, and according to the requirements for the tread of the non-pneumatic tire 2 according to the specific driving road conditions, the high wear-resistant tread 204 is cast by mold or 3D printed.

Example 5:

On the basis of Embodiment 1 or 2 or 3 or 4, a cooling structure (such as a cooling water jacket) is provided inside the motor housing 101 to cool the motor hub 1 to prevent overheating.

Example 6:

On the basis of Embodiment 1 or 2 or 3 or 4 or 5, the stiffness of the topological support body 202 is greater than the stiffness of the buffer and shock absorbing layer 203 , that is, the topological support body 202 is mainly based on the support function, supplemented by the damping function, and the buffer reduces the The seismic layer 203 is mainly used for the shock absorption function and supplemented by the supporting function;

To sum up, the above are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. An electrically driven wheel based on a non-pneumatic tire, comprising: an electric hub (1), a non-pneumatic tire (2) and a fastening cover (3); the non-pneumatic tire (2) is of an annular structure, the electric hub (1) is of a cylindrical structure, and the non-pneumatic tire (2) is coaxially sleeved on the periphery of the electric hub (1) and is in interference fit with the electric hub; the fastening outer cover (3) is of a cylindrical structure with an opening at one end, is coaxially embedded into the non-pneumatic tire (2), and is fixedly connected with the electric hub (1) through a fastening piece (4).

2. Electrically driven wheel based on a non-pneumatic tyre, as claimed in claim 1, characterized in that said motorized hub (1) comprises: the brake comprises a brake caliper (102), a disc brake (103), a high-speed inner rotor permanent magnet synchronous motor, a planetary speed reducing mechanism and a hub outer ring (110);

the hub outer ring (110) is of a cylindrical structure with one open end, and a hollow central shaft (114) is axially arranged on the hub outer ring; the high-speed inner rotor permanent magnet synchronous motor is coaxially supported on the periphery of a central shaft (114) through a bearing B (111) and serves as a prime mover part of the electric hub (1); the planetary speed reducing mechanism is coaxially arranged between the high-speed inner rotor permanent magnet synchronous motor and a hub outer ring (110) and is used for reducing speed and increasing torque of the electric hub (1); more than one brake caliper (102) is arranged on the circumferential direction of the axial end portion of the high-speed inner rotor permanent magnet synchronous motor, one end of the disc brake (103) is arranged in the brake caliper (102), and the other end of the disc brake is connected with the inner key of the central shaft (114) and used for providing a braking effect for wheels.

3. A non-pneumatic tire based electrically driven wheel as in claim 2, wherein said high speed inner rotor permanent magnet synchronous motor comprises: a motor housing (101), a motor stator (104), a motor rotor (105) and a motor output shaft (106);

the motor output shaft (106) is a hollow shaft and is coaxially supported on the periphery of the central shaft (114) through a bearing B (111); the motor shell (101) is of an annular cavity structure, and is coaxially supported on the periphery of the rear end of the motor output shaft (106) through a bearing A107, and the planetary speed reducing mechanism is coaxially fixed on the periphery of the front end of the motor output shaft (106); the motor stator (104) and the motor rotor (105) are respectively and coaxially installed in the motor shell (101), wherein the motor stator (104) is coaxially arranged outside the motor rotor (105), and the motor rotor (105) is coaxially fixed on the periphery of the motor output shaft (106).

4. A non-pneumatic tire based electrically driven wheel as in claim 3, wherein said planetary reduction mechanism comprises: a sun gear (108), a planetary gear (109), an outer ring gear (112) and a planetary carrier (113); the sun gear (108) is coaxially fixed on the periphery of the front end of the motor output shaft (106); the outer gear ring (112) is coaxially and fixedly connected to the front end part of the motor shell (101); the planet retainer (113) is uniformly fixed on the inner end surface of the front end of the hub outer ring (110) along the circumferential direction; a planetary gear (109) is coaxially arranged on each planetary retainer (113), and the planetary gear (109) is respectively meshed with the sun gear (108) and the outer gear ring (112).

5. A non-pneumatic electrically driven wheel as claimed in claim 3, wherein said motor housing (101) further has a suspension interface (116) mounted on the outer end surface at the rear end thereof for connection to a vehicle body suspension.

6. A non-pneumatic tyre based electrically-driven wheel as claimed in claim 1, wherein said non-pneumatic tyre (2) comprises: the tyre comprises a tyre inner ring (201), a topological support body (202), a buffer shock-absorbing layer (203) and a high-wear-resistance tread (204);

the tire inner ring (201) and the topological support main body (202) are both made of elastic materials and are both of annular structures, and the topological support main body (202) is coaxially fixed on the tire inner ring (201); the buffer damping layer (203) is an annular high-elasticity cavity and is coaxially fixed on the periphery of the topological support main body (202); the high-wear-resistance tread (204) is of an annular structure and is coaxially fixed on the periphery of the buffering and shock-absorbing layer (203).

7. A non-pneumatic tire-based, electrically driven wheel as in claim 6, wherein said topological support body (202) is of a web structure or a honeycomb structure uniformly arranged in a circumferential direction.

8. Electrically driven wheel based on a non-pneumatic tyre, as claimed in claim 6, characterized in that the outer wall of said shock-absorbing layer (203) is made of elastomeric material, the interior of which is filled with ETPU.

9. A non-pneumatic tire based electrically driven wheel as in claim 6, wherein the relative thickness of said topological support body (202) and said cushioning layer (203) in the radial direction is adjustable.

10. Electrically driven non-pneumatic tyre-based wheel as claimed in claim 7, characterized in that said fastening housing (3) comprises: an end panel (301) and a claw structure (302); the end plate (301) is of a disc-shaped structure, the claw-shaped structure (302) is of a sawtooth annular structure, the claw-shaped structure (302) is perpendicular to the end plate (301), and the claw-shaped structure and the end plate (301) are integrally formed to form a cylindrical structure with one open end; the claw-shaped structure (302) penetrates through the hollow part in the topological support main body (202) and then is fixedly connected with the electric hub (1).

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