阅读说明：本技术 具有仿生牙齿结构的非充气弹性体轮胎 (Non-pneumatic elastomer tire with bionic tooth structure ) 是由 王伟 王竹清 王月娥 于 2021-01-18 设计创作，主要内容包括：本发明属于非充气轮胎胎体结构技术领域,公开了具有仿生牙齿结构的非充气弹性体轮胎。该非充气弹性体轮胎的支撑柱在所述内圆周连接构件与外圆周连接构件之间延伸并分别与内圆周连接构件、外圆周连接构件匹配连接,所述支撑柱具有一定弧度向胎侧外弯曲,所述支撑柱在轮胎轴向对应设置两个并呈镜像对称排布,形成“牙齿”形状的支撑对。本发明的非充气轮胎结构不仅具有充气轮胎的承载能力和静刚度特点,而且接地压力分布合理,有利于减震性能的提高。(The invention belongs to the technical field of non-pneumatic tire body structures, and discloses a non-pneumatic elastomer tire with a bionic tooth structure. The support columns of the non-pneumatic elastomer tire extend between the inner circumference connecting component and the outer circumference connecting component and are respectively connected with the inner circumference connecting component and the outer circumference connecting component in a matching manner, the support columns are bent outwards towards the tire side in a certain radian, and two support columns are correspondingly arranged in the axial direction of the tire and are arranged in a mirror symmetry manner to form a tooth-shaped support pair. The non-pneumatic tire structure not only has the characteristics of bearing capacity and static rigidity of the pneumatic tire, but also has reasonable ground pressure distribution, and is beneficial to improving the damping performance.)

1. A non-pneumatic elastomeric tire having a biomimetic dental structure, comprising an inner circumferential connecting member, an outer circumferential connecting member, and a support strut connecting the inner circumferential connecting member to the outer circumferential connecting member, characterized in that: the support columns extend between the inner circumference connecting component and the outer circumference connecting component and are respectively connected with the inner circumference connecting component and the outer circumference connecting component in a matching mode, the support columns are bent outwards towards the tire side with a certain radian, two support columns are correspondingly arranged in the axial direction of the tire and are arranged in a mirror symmetry mode to form a support pair in a tooth shape, the thickness of the support columns is reduced at the part close to the inner circumference connecting component, and the thickness of the support columns is increased at the part close to the outer circumference connecting component.

2. A non-pneumatic elastomeric tire as in claim 1, wherein: the inner side of the supporting column is provided with a first shape curve, and the outer side of the supporting column is provided with a second shape curve.

3. A non-pneumatic elastomeric tire as in claim 2, wherein: radius of curvature R of the first shape curve₁R is within the range of 160mm₁No more than 400mm, the curvature radius R of the second shape curve₅R is within the range of 100mm or less₅≤350mm。

4. A non-pneumatic elastomeric tire according to claim 1 or 2, wherein: the contact part of the support column and the outer circumference connecting component is provided with a third shape curve, and the curvature radius R of the third shape curve₄R is within the range of 60mm or less₄≤300mm。

5. A non-pneumatic elastomeric tire as in claim 1, wherein: the outer circumference connecting component presents a profile of a 'gum' shape, the middle of the outer circumference connecting component is thicker than the two sides of the outer circumference connecting component, the middle part of the outer circumference connecting component protrudes outwards to form a convex part, and the two side parts of the outer circumference connecting component both recess inwards to form concave parts.

6. The non-pneumatic elastomeric tire according to claim 5, wherein: radius of curvature R of the convex portion₂R is within the range of 240 mm-R₂Less than or equal to 500 mm; radius of curvature R of the recessed portion₃R is within the range of 150 mm-R₃≤400mm。

7. A non-pneumatic elastomeric tire as in claim 1, wherein: the supporting columns are arranged in a circumferential array mode, and the number of the supporting pairs is between 30 and 40.

8. A non-pneumatic elastomeric tire as in claim 1, wherein: the inner circumferential connecting member is configured to be connected to a hub, the outer circumferential connecting member is spaced apart from the inner circumferential connecting member in a tire radial direction, and is configured to be connected to a tire tread.

Technical Field

The invention relates to the technical field of non-pneumatic tire body structures, in particular to a non-pneumatic elastomer tire with a bionic tooth structure.

Background

The tires are divided into two types, namely pneumatic tires and non-pneumatic tires, and the pneumatic tires adopt rubber and rim closed compressed air to support the tire crown, so that the working conditions of insufficient tire pressure, puncture and air leakage of the tires by objects, tire burst and the like can occur in the using process. The non-pneumatic tire is generally a solid tire, and the crown is supported by replacing compressed air in the pneumatic tire with a solid support, so that the problems of insufficient tire pressure, puncture, tire burst and the like which can be caused in the non-pneumatic tire can be effectively avoided, and meanwhile, the non-pneumatic tire has higher transverse rigidity than the pneumatic tire, and the steering stability of a vehicle can be improved. However, the solid non-pneumatic tire has a heavy weight and needs to be improved in bearing capacity, and the structure of the common non-pneumatic tire deforms in the tire side when stressed, which is not favorable for improving the damping performance, and causes the defects of poor damping performance, poor riding comfort and the like.

Disclosure of Invention

The invention provides a non-pneumatic elastomer tire with a bionic tooth structure, aiming at solving the problem of poor bearing capacity and shock absorption effect in the prior art.

In order to solve the technical problems, the invention adopts the following technical scheme:

a non-pneumatic elastomeric tire having a biomimetic dental structure, comprising an inner circumferential connecting member, an outer circumferential connecting member, and a support strut connecting the inner circumferential connecting member to the outer circumferential connecting member; the support columns extend between the inner circumference connecting component and the outer circumference connecting component and are respectively connected with the inner circumference connecting component and the outer circumference connecting component in a matching mode, the support columns are bent outwards towards the tire side with a certain radian, two support columns are correspondingly arranged in the axial direction of the tire and are arranged in a mirror symmetry mode to form a support pair in a tooth shape, the thickness of the support columns is reduced at the part close to the inner circumference connecting component, and the thickness of the support columns is increased at the part close to the outer circumference connecting component.

The inner side of the supporting column provided by the invention is provided with a first shape curve, the outer side of the supporting column is provided with a second shape curve, and the curvature radius R of the first shape curve₁R is within the range of 160mm₁No more than 400mm, the curvature radius R of the second shape curve₅R is within the range of 100mm or less₅Less than or equal to 350 mm. The contact part of the support column and the outer circumference connecting component is provided with a third shape curve, and the curvature radius R of the third shape curve₄R is within the range of 60mm or less₄≤300mm。

The outer circumference connecting component provided by the invention presents a profile of a 'gum' shape, the middle of the outer circumference connecting component is thicker than the two sides, the middle part of the outer circumference connecting component protrudes outwards to form a convex part, and the two side parts of the outer circumference connecting component both recess inwards to form concave parts.

Preferably, the radius of curvature R of the convex portion₂R is within the range of 240 mm-R₂Less than or equal to 500 mm; radius of curvature R of the recessed portion₃R is within the range of 150 mm-R₃≤400mm。

The supporting columns provided by the invention are arranged in a circumferential array mode, and preferably, the number of the supporting pairs is between 30 and 40.

The inner circumferential connecting member provided by the present invention is configured to be connected to a hub, the outer circumferential connecting member being spaced apart from the inner circumferential connecting member in a tire radial direction and configured to be connected to a tire tread.

The invention provides a non-pneumatic elastomer tire with a bionic tooth structure, wherein a supporting column of the non-pneumatic elastomer tire is bent outwards towards a tire side in a certain radian, and a supporting pair presents a tooth-shaped outline; the bionic tooth non-pneumatic tire disclosed by the invention is bent outwards towards the tire side when bearing deformation, is more close to the deformation condition of the pneumatic tire, is beneficial to improving the damping performance, and can be applied to tires of various vehicles. The non-pneumatic elastomer tire provided by the invention has the advantages of puncture resistance, easiness in processing, maintenance and maintenance, long service life, easiness in tread replacement and the like, and is particularly suitable for being used under the condition of severe working environment.

Drawings

FIG. 1 is a schematic structural view of a non-pneumatic elastomeric tire provided in accordance with the present invention;

FIG. 2 is another schematic structural view of a non-pneumatic elastomeric tire provided in accordance with the present invention;

FIG. 3 is a cross-sectional view of a non-pneumatic elastomeric tire provided in accordance with the present invention;

FIG. 4 is a partial schematic structural view of a support post and an outer circumferential connecting member provided in the present invention;

FIG. 5 is a graph comparing stiffness curves for a non-pneumatic elastomeric tire and a pneumatic tire provided in accordance with the present invention.

Detailed Description

The invention discloses a non-pneumatic elastomer tire with a bionic tooth structure, and the content of the non-pneumatic elastomer tire can be referred by persons skilled in the art, and the relevant structure can be properly improved. It is expressly intended that all such similar substitutes and modifications which would be obvious to those skilled in the art are deemed to be included in the invention. While the methods and applications of this invention have been described in terms of preferred embodiments, it will be apparent to those of ordinary skill in the art that variations and modifications in the methods and applications described herein, as well as other suitable variations and combinations, may be made to implement and use the techniques of this invention without departing from the spirit and scope of the invention.

The following detailed description of the invention refers to specific embodiments thereof for better understanding by those skilled in the art.

The non-pneumatic elastomer tire with the bionic tooth structure comprises an inner circumference connecting member 40, an outer circumference connecting member 20 and support columns 30, wherein the support columns 30 extend between the inner circumference connecting member 40 and the outer circumference connecting member 20 and connect the inner circumference connecting member 40 to the outer circumference connecting member 20, the support columns 30 are respectively matched and connected with the inner circumference connecting member 40 and the outer circumference connecting member 20, the support columns 30 are bent outwards from the side walls with certain radian, two support columns 30 are correspondingly arranged in the axial direction of the tire and are arranged in a mirror symmetry mode to form support pairs in a tooth shape, the thickness of the support columns 30 is reduced at the part close to the inner circumference connecting member, and the thickness of the support columns is increased at the part close to the outer circumference connecting member.

The outer circumference connecting member 20 and the support pair of the non-pneumatic elastomer tire are similar to a gum and a tooth structure in shape, the tooth structure of the support column is similar to the hardest tooth organ, the outline structure of the tooth enables the support column 30 to have larger rigidity, the support pair of the non-pneumatic tire is a bionic tooth outline, the bearing capacity of the tire can be improved, the service life of the tire can be prolonged, the defects that the tire cannot be used due to puncture, air leakage, tire burst and the like in the running process of the tire are avoided, and the running safety and reliability of the tire are improved. The root of the supporting column 30 is an outer circumference connecting component 20 of a simulated teethridge structure, and is used as a supporting body of teeth, so that stress borne by the tooth-shaped supporting column can be well dispersed, the bearing capacity of the tire is improved, vibration and impact from the road surface can be well dispersed by a structure with thick middle and thin two sides, the grounding pressure is uniformly distributed, and the driving mileage of the tire is improved. The bionic tooth non-pneumatic tire disclosed by the invention is bent outwards towards the tire side when bearing deformation, is more close to the deformation condition of the pneumatic tire, is beneficial to improving the damping performance, and can be applied to tires of various vehicles.

Further, the support pillar 20 of the present invention is used for bearing vehicle loads, and unlike the deformation of a common non-pneumatic tire along the circumferential direction of the tire, the support pillar of the present invention bends and deforms towards the outer side of the tire, and is closer to the deformation condition of the pneumatic tire, so as to better buffer the vibration and impact from the road surface; the inner side of the support column 30 provided by the invention is provided with a first shape curve 301, the outer side of the support column is provided with a second shape curve 302, and the curvature radius R of the first shape curve 301₁R is within the range of 160mm₁400mm or less, the curvature radius R of the second shape curve 302₅R is within the range of 100mm or less₅Less than or equal to 350 mm; the contact part of the supporting column 30 and the outer circumferential connecting member 20 has a third shape curve 303 having a radius of curvature R₄R is within the range of 60mm or less₄Less than or equal to 300 mm; thus, the support pillar 20 plays a main role in supporting and cushioning during the running of the tire, and needs to have a certain rigidity to bear the weight of the vehicle, the necessary radian parameters enable the support pillar to bend and deform towards the outer side of the tire to play a role in cushioning, and the proper thickness changes to reduce the weight of the tire.

The outer circumference connecting component 20 provided by the invention presents a profile of a 'teethridge' shape, the middle of the outer circumference connecting component 20 is thicker than the two sides, the ground contact pressure of the tire can be effectively dispersed, the impact vibration of the ground can be buffered, the wear resistance of the tire can be improved, and the service life of the tire can be prolonged. The middle part of the outer circumference connecting component protrudes outwards to form a convex part 201, and both side parts of the outer circumference connecting component are sunken inwards to form an inner concave part 202; the shape of the root of the supporting column 30 is matched with the convex part 201 and the concave part 202 of the outer circumference connecting member 20 to form a state similar to the tight connection matching of the gum and the tooth structure; outer circumference connecting elements 20 is outer ring bionical "teethridge" profile for fixed stay post and laminating tread decorative pattern piece, when because of the tire contacts with ground, ground pressure reduces progressively all around from the contact center, so will be thicker than both sides in the middle of the outer ring, similar teethridge structure, but dispersible ground pressure reduces stress concentration, alleviates tire weight, improves the life of tire.

Radius of curvature R of the convex portion 201₂R is within the range of 240 mm-R₂Less than or equal to 500 mm; the radius of curvature R of the concave portion 202₃R is within the range of 150 mm-R₃Less than or equal to 400mm, better ground pressure dispersion, stress concentration reduction, tire weight reduction and tire service life improvement.

In this embodiment, the plurality of support columns 30 provided by the present invention are arranged in a circumferential array, and the number of the support pairs is between 30 and 40 pairs. The present invention provides that the inner circumferential connecting member 40 is configured to be connected to a hub, the outer circumferential connecting member 20 is spaced apart from the inner circumferential connecting member 20 in the tire radial direction, and is configured to be connected to the tire tread 10.

The non-pneumatic elastic body tire provided by the invention can adopt the following two schemes: the first solution is that the tread 10 of the tire utilizes an extruder to extrude a tread semi-finished product for vulcanization and fitting on the outer circumferential connecting member 20 connected with the supporting body 30, the supporting body 30 can be molded once by injection or pouring with polyurethane, and the tread semi-finished product is placed in a tire mold before injection or pouring, thereby completing fitting and vulcanization molding of the tread and the supporting body 30. The second solution is to use polyurethane material to inject or cast the tread 10 and the support 30, and the molding method is simple, the production efficiency is high, and the product quality is easy to guarantee.

The non-pneumatic tire provided by the invention has the characteristics of bearing capacity and static rigidity of the pneumatic tire with the same specification, as shown in figure 5. FIG. 5 shows that the non-pneumatic elastomer tire with bionic tooth structure provided by the invention can be close to the pneumatic tire with the same specification or similar specification in the aspects of bearing capacity and static rigidity.

The performance of the non-pneumatic tire provided by the present invention was calculated in a simulation and compared with the pneumatic tire test results, as shown in table 1.

Table 1 non-pneumatic tire performance data of the present invention

Item	Measured value of pneumatic tire	Non-pneumatic tire simulation value
			Standard load (kN)	34.79	34.79
Vertical deflection (mm) under load	34.30	35.86
			Footprint area (mm)2)	42838	35792
Average grounding pressure (MPa)	0.812	0.97
			Maximum ground pressure (MPa)	5.31	3.44

The data in table 1 shows that the non-pneumatic tire has a slightly smaller vertical deflection under the same load, which is advantageous for improving the damping effect. In addition, the maximum value of the grounding pressure is obviously smaller than the actual measurement value of the pneumatic tire, the grounding pressure is more uniform, and the wear resistance and the driving mileage of the tire are favorably improved.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.