CN212124750U

CN212124750U - Non-pneumatic elastic tyre of gentle spoke formula

Info

Publication number: CN212124750U
Application number: CN202020210164.8U
Authority: CN
Inventors: 郑皓天; 陈伟; 刘亚飞; 乔志伟; 张秀才; 付宏勋
Original assignee: Shandong University of Technology
Current assignee: Shandong University of Technology
Priority date: 2020-02-26
Filing date: 2020-02-26
Publication date: 2020-12-11
Anticipated expiration: 2030-02-26

Abstract

The utility model discloses a gentle non-pneumatic elastic tire of spoke formula relates to the rubber tire field. It includes: the tire comprises a tire tread, an elastic support body and an inner pressure bearing ring; the tread, the elastic support body and the inner pressure bearing ring are sequentially arranged from outside to inside in the radial direction of the tire; the elastic support body comprises a nested arch structure, a linear structure, a circular structure and a negative Poisson ratio concave curved side triangular structure unit with the same size and structure, wherein the linear structure and the circular structure are in proportion; the nested arch structures comprise long-distance arch structures, short-distance arch structures and small arch structures; the short-distance arch structure is designed to simulate an arch bridge structure; an inward concave curved side triangular structure with a negative Poisson ratio characteristic is formed between the two adjacent long-distance arch structures and the tire tread and between the linear structure and the top of the long-distance arch structure, so that the tire has good impact resistance and noise reduction performance; the elastic supporting body and the inner pressure bearing ring are made of high-modulus polyurethane materials and have the advantages of high hardness, fatigue resistance, cutting resistance and environmental protection.

Description

Non-pneumatic elastic tyre of gentle spoke formula

Technical Field

The utility model relates to a tire field, in particular to non-pneumatic elastic tire of gentle spoke formula.

Background

The inflation structure of the tire has a plurality of hidden dangers in the aspect of safety, and the phenomena of tire breakage or tire burst sometimes occur. In order to solve the potential safety hazard of the pneumatic tire, scientific researchers are focusing on the research and development of the safety tire. The tire safety technology can be classified into a run-flat technology and a non-inflation technology according to technical principles.

The run-flat tire is similar to a general tire in appearance, except that it has no inner tube, air is directly pressed into the outer tire, and the run-flat tire prevents the tire from being deflated by the additional rubber sealing layer on the inner wall of the outer tire and the self-adhesive layer made of vulcanized rubber. But still keep the original pneumatic structure of the tire, still have the phenomenon of tire burst because of excessive wearing and tearing, and when the weather is hot, the self-adhesive layer on the tire probably softens and moves downwards to destroy wheel balance, the promotion space of security performance is limited.

The prior non-pneumatic tire mainly has the structural forms of spoke-like type, honeycomb type and oblique radiation type. The novel non-inflatable structure is generally adopted to replace compressed air in the inner cavity of the tire, so that the inflatable structure of the tire is broken away, and the overall safety performance of the tire can be obviously improved. Non-pneumatic technology has become a trend in tire safety technology. However, the existing non-pneumatic tire has single structural design and material selection, and has defects in the aspects of tire strength, impact resistance, thermal deformation degree, bearing capacity and the like.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a non-pneumatic elastic tyre of gentle spoke formula has solved the problem that pneumatic tyre bursts, has also solved current non-pneumatic tyre bearing capacity simultaneously and has hanged down, intensity is little, inhale the poor shortcoming of shake, has fine practical value.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a radial non-pneumatic elastomeric tire, comprising: the tire comprises a tire tread (1), an elastic supporting body (2) and an inner pressure bearing ring (9); the tire tread (1), the elastic support body (2) and the inner pressure-bearing ring (9) are sequentially arranged from outside to inside in the radial direction of the tire; the elastic support body (2) comprises a nested arch structure (3), a linear structure (7), a circular structure (8) and negative Poisson ratio inner concave curved side triangular structure units (10) and (11) which are in proportion to each other in size and have the same structure; the nested arch structures (3) comprise long-distance arch structures (4), short-distance arch structures (5) and small arch structures (6); the short-distance arch structure (5) is designed to simulate an arch bridge structure; and concave curved-edge triangular structures (10) and (11) with negative Poisson's ratio characteristics are formed between the two adjacent long-distance arch structures (4) and the tread (1) and between the linear structure (7) and the top of the long-distance arch structure (4).

Preferably, the tread (1) is made of thermoplastic elastomer material, the structure of which is consistent with the pattern and the common tire.

Preferably, the inner pressure bearing ring (9) is made of high-modulus polyurethane material, the upper surface of the inner pressure bearing ring is connected with the elastic support body (2), and the lower surface of the inner pressure bearing ring is in interference fit with the rim.

Preferably, the nested arch structures (3) are made of high-modulus polyurethane materials, structurally, each nested arch structure serves as a structural unit, is connected left and right and is annularly arranged around the inner pressure bearing ring (9), the interval angle of each nested arch structure is 30 degrees, and the center of an array circle is the axis of the flexible spoke type non-pneumatic tire.

Preferably, a circular structure (8) is designed at the intersection of the two adjacent nested arch structures (3), the circular structures (8) are positioned above the short-distance arch structures (5) and are annularly arranged around the inner pressure bearing ring (9), the interval angle is 30 degrees, and the center of the array is the axis of the flexible spoke type non-pneumatic tire.

Preferably, each linear structure (7) is positioned in the center of the nested arch structure (3), the long-distance arch structure (4) and the short-distance arch structures (5) at the left end and the right end of the long-distance arch structure are connected through polyurethane adhesive, and the linear structures (7) are made of high-modulus polyurethane materials and play a role in supporting the tire.

Preferably, concave curved side triangular structures (10) and (11) with negative Poisson's ratio characteristics are respectively formed between the two adjacent nested arch structures (3) and the tread (1) and at the tops of the linear structures (7) and the long-distance arch structures (4), so that the energy absorption is more stable under the action of impact load, the compression amount is larger, and the energy absorption capacity is stronger along with the increase of the impact speed.

Preferably, the short-distance arch structure (5) is designed to be an arch bridge structure, and has a force relief effect.

Preferably, the tread (1) and the elastic support body (2), the elastic support body (2) and the upper surface of the inner pressure bearing ring (9), and the long-distance arch structure (4) and the linear structure (7) are connected together through polyurethane adhesive.

Preferably, the structures in the elastic support body (2) are in smooth transition.

Compared with the prior art, the beneficial effects of the utility model reside in that:

(1) compare with current non-pneumatic tire, the utility model discloses design non-pneumatic tire into the non-pneumatic tire that has different bearing structure, replace solid construction and the inflatable mode of the inner tube of a tyre with the elastic support body, need not to aerify and maintain, can greatly avoid pneumatic tire's potential safety hazard.

(2) The tyre is designed into a mode of mutually nesting an arch, an inward concave curved side triangle with a negative Poisson ratio and a circle, so that the tyre can meet more working conditions, the enough large deformation degree of the tyre is ensured, and the larger adhesive force and the larger vibration absorption capacity are obtained; meanwhile, the short-distance arch structure is designed to imitate an arch bridge structure, so that the effects of absorbing vibration, dispersing pressure to the outside and discharging pressure can be better achieved; the triangular structure enables the tire to have the characteristics of stability and pressure resistance, the negative Poisson ratio characteristic absorbs energy more stably under the action of impact load, the compression amount is larger, and stronger energy absorption capacity is expressed along with the improvement of the impact speed;

(3) the tire material is designed into the combination of different materials with various properties, the inner pressure-bearing ring and the elastic support body are made of high-modulus polyurethane materials, and the linear structure contained in the elastic support body has a better supporting effect, so that the structural strength of the elastic support body is increased, the damage of the support body is reduced as much as possible, and the safety and reliability of the tire are improved. The tread is made of thermoplastic elastomer materials, so that the tread has higher heat resistance and wear resistance, the problems of heat generation and impact resistance of the tread are solved, the structural design is more compact, the bearing load capacity and impact resistance of the tire are improved, the defect of stress concentration easily caused is overcome, and the service life of the tire is prolonged.

Drawings

FIG. 1 is a schematic view of a non-pneumatic elastomeric radial tire;

FIG. 2 is a front view of a radial non-pneumatic elastomeric tire;

FIG. 3 is a schematic view of the structure of the elastic support body;

FIG. 4 is a schematic view of a negative Poisson's ratio concave curved side triangle between two adjacent nested arches and the tread; fig. 5 is a schematic view of an arch bridge structure.

Detailed Description

The present invention will be described in further detail with reference to the following drawings and specific examples, which are provided for illustration only and are not intended to limit the scope of the present invention.

The utility model provides a gentle spoke formula non-pneumatic elastic tire, the tire model is 235/60R16, gentle spoke formula non-pneumatic elastic tire's technical parameter does, and the section is wide: 235mm, flatness 60%, load index: 85.

as shown in figure 1, the surface of the tread (1) has a common pattern structure which is the same as that of a common automobile tire, and the tread (1) is made of a thermoplastic elastomer material, so that the tire has good heat resistance and wear resistance.

As shown in fig. 2, the front view of the radial non-pneumatic elastic tire, three structural units of the long-distance arch structure (4), the short-distance arch structure (5) and the small arch structure (6) are arranged in a nested manner, and the annular arrangement mode of each group of nested arch structural units is that every structural unit with an angle of 30 degrees takes the axis of the radial non-pneumatic elastic tire as the center of a circle and twelve annular arrays are arranged, and meanwhile, the nested combination can better play the roles of absorbing vibration and dispersing pressure to the outside.

As shown in fig. 2, the short-distance arch structures (5) are in contact with a wheel rim, and twelve annular arrays are formed by taking the axle center of the wheel rim as the center of a circle according to each structural unit with an angle of 30 degrees; meanwhile, the upper end of each short-distance arch structure unit (5) is provided with a circular structure (8), the short-distance arch structure (5) is designed into an arch bridge simulating structure, small arch structures (6) are embedded in the short-distance arch structure, the small arch structures (6) are in contact with an inner pressure bearing ring (9), and twelve annular arrays are formed by taking the axle center of a wheel rim as the center of a circle according to each structure unit with an angle of 30 degrees.

As shown in fig. 2, the top of the long-distance arch structure (4) is in contact with the tread (1), the bottom end of the long-distance arch structure (4) is tangent to the left tangent line and the right tangent line of the left and right short-distance arch structures (5), and the left and right tangent lines are intersected with the short-distance arch structures (5) at the left and right ends and extend to the upper surface of the inner pressure-bearing ring (9).

As shown in fig. 3, each long-distance arch structure (4) has a group of linear structures (7), and each linear structure (7) is respectively connected with the left short-distance arch structure (5) and the right short-distance arch structure (5) and the long-distance arch structure (4) through polyurethane adhesive; the linear structure (7) is made of high-modulus polyurethane materials, has a good supporting effect, increases the structural strength of the elastic supporting body, and avoids deformation of the supporting body.

As shown in fig. 3, each linear structure (7) and the top end of each long-distance arch structure (4) form a small negative poisson's ratio concave-curved triangle (11). Meanwhile, every two adjacent long-distance arch structures (4) and the tire tread (1) form a large negative poisson ratio concave curved triangle (10), so that the tire is ensured to deform to a large extent, and a large adhesive force and a large vibration absorption capacity are obtained.

As shown in fig. 4, the triangular structure (10) with the negative poisson ratio concave curved surface between two adjacent nested arch structures (3) and the tread (1) has the arc length of L1 being 10.99cm, the size of theta 1 being 30 degrees and the size of theta 2 being 30 degrees. The negative Poisson ratio concave triangular structural units (10) and (11) which are in proportional relation in size and have the same shape structure have the corresponding arc length ratio of 0.5. Meanwhile, the tire has the characteristics of stability and pressure resistance of a triangular structure, and has the effects of impact resistance and noise reduction with the characteristic of negative Poisson ratio, and the safety and reliability of the tire are improved.

As shown in the schematic diagram of the arch bridge structure shown in FIG. 5, the short-distance arch structure (5) is designed to be similar to the arch bridge structure, and has good relief effect.

It should be understood that the above-mentioned embodiments are the preferred embodiments of the present invention, but the present invention is not limited to these embodiments, and any obvious modifications, substitutions or variations can be made by those skilled in the art without departing from the scope of the present invention.

Claims

1. A soft spoke type non-pneumatic elastic tire relates to the field of rubber tires; it includes: the tire comprises a tire tread (1), an elastic supporting body (2) and an inner pressure bearing ring (9); the method is characterized in that: the tire tread (1), the elastic support body (2) and the inner pressure-bearing ring (9) are sequentially arranged from outside to inside in the radial direction of the tire; the elastic support body (2) comprises a nested arch structure (3), a linear structure (7), a circular structure (8) and negative Poisson ratio inner concave curved side triangular structures (10, 11) which are in proportion to each other in size and have the same structure; the nested arch structures (3) comprise long-distance arch structures (4), short-distance arch structures (5) and small arch structures (6); the short-distance arch structure (5) is designed to simulate an arch bridge structure; concave curved side triangular structures (10 and 11) with negative Poisson's ratio characteristics are formed between the two adjacent long-distance arch structures (4) and the tread (1) and between the linear structure (7) and the top of the long-distance arch structure (4); the elastic supporting body (2) and the inner pressure bearing ring (9) are made of high-modulus polyurethane materials.

2. A radial non-pneumatic elastomeric tyre according to claim 1, characterized in that said tread (1) is made of thermoplastic elastomeric material.

3. A radial non-pneumatic elastomeric tyre according to claim 1, characterised in that said inner pressure-bearing ring (9) is made of high modulus polyurethane material, the upper surface of which is connected to said elastomeric support body (2) and the lower surface of which is in interference fit with said rim.

4. A radial non-pneumatic elastomeric tyre according to claim 1, characterized in that said nested arches (3) are made of high modulus polyurethane material, and structurally each nested arch (3) is made as a structural unit, connected left and right and arranged annularly around the inner bearing ring (9), with an angular interval of 30 °, the centre of the array being the axis of said radial non-pneumatic tyre.

5. A radial non-pneumatic elastomeric tyre according to claim 1, wherein the intersection of two adjacent nested arches (3) is designed with a circular structure (8), said circular structure (8) being positioned above the short-distance arch (5) and arranged annularly around the inner bearing ring (9) with a spacing angle of 30 ° and the centre of the array being the axis of said radial non-pneumatic tyre.

6. A radial non-pneumatic elastomeric tire according to claim 1, wherein each of said linear structures (7) is centrally located in said nested arches (3) and is connected to said long arch (4) and said short arch (5) at the left and right ends thereof by a polyurethane adhesive, said linear structures (7) being made of a high modulus polyurethane material and serving to support the tire.

7. A radial non-pneumatic elastomeric tyre according to claim 1, characterized in that between two adjacent nested arches (3) and the tread (1), and between the linear structure (7) and the top of the long-distance arch (4), respectively, there are formed inner concave triangular structures (10, 11) with negative poisson's ratio.

8. A radial non-pneumatic elastomeric tyre according to claim 1, characterized in that said short-distance arch structure (5) is designed to resemble an arch bridge structure, with a relief effect.

9. A radial non-pneumatic elastomeric tyre according to claim 1, characterized in that said tread (1) and elastomeric support (2), said elastomeric support (2) and the upper surface of the inner pressure ring (9), said long-distance arch structures (4) and linear structures (7) are connected together by polyurethane adhesive.

10. A radial non-pneumatic elastomeric tyre according to claim 1, characterized in that the various structures of the elastomeric support body (2) have smooth transitions between them.