CN114801591A

CN114801591A - Non-pneumatic tire

Info

Publication number: CN114801591A
Application number: CN202210415461.XA
Authority: CN
Inventors: 王�锋; 李大双; 路波; 徐静; 刘伟婧; 宋明亮; 陈全波; 臧学华
Original assignee: Shandong Linglong Tyre Co Ltd
Current assignee: Shandong Linglong Tyre Co Ltd
Priority date: 2022-04-20
Filing date: 2022-04-20
Publication date: 2022-07-29

Abstract

The invention relates to the field of tires, and discloses a non-pneumatic tire, which comprises: a hub; the tire tread is sleeved on the hub; a reinforced shear band attached to the inner side of the tread; the spoke plate is fixed between the reinforced shear band and the hub; the web includes: a plurality of support body groups, adjacent support body groups are arranged in a staggered mode; each support body group consists of two support bodies, any support body is in an irregular Z shape, and the directions of the two support bodies in the same support body group are opposite; the first connecting surface is connected to the outer side of the hub and used for fixing one end of the supporting body; and the second connecting surface is connected to the inner side of the reinforced shear band and used for fixing the other end of the support body. The support body adopts the bionic principle, so that the rigidity decoupling design of the non-pneumatic tire is realized, and the operating stability is improved; the support body group adopts a staggered arrangement mode, so that the heat dissipation capability of the non-pneumatic tire is improved, and the noise value is reduced.

Description

Non-pneumatic tire

Technical Field

The invention relates to the field of tires, in particular to a non-pneumatic tire.

Background

All basic performance characteristics of the vehicle, such as braking and driving characteristics, are closely related to the tire. At present, most of the market mainstream adopts the pneumatic tire, but the pneumatic tire has the defects that the puncture resistance is poor, the vehicle can not run basically after air leakage, the tire burst risk is caused, the manufacturing process is complex and the like. When the pneumatic tire is optimally designed, the vertical rigidity and the longitudinal rigidity are generally reduced by reducing the inflation pressure, but the lateral rigidity is also reduced, so that the handling performance of a vehicle is deteriorated, which is a difficulty which cannot be solved by the pneumatic tire at present.

Compared with the traditional pneumatic tire, the non-pneumatic tire has the characteristics of inflation-free, puncture-proof, economy, wear resistance and the like, and in addition, the standing wave phenomenon does not exist, and the rolling resistance can be reduced. However, existing non-pneumatic tires still do not address the problems of load bearing, noise and heat dissipation.

When the structure of the existing non-pneumatic tire is designed, the arrangement mode that the wheel disc extends along the axial direction is mostly adopted, so that the noise peak value is larger, and the noise is larger. In order to avoid high noise, the web is designed to minimize the overall amplitude of the noise, and to maximize the energy distribution of the noise over a wider frequency range to avoid peaks in a narrow frequency range.

The polyurethane material has the characteristics of high strength, high elasticity, long service life, simple production process and the like, and is an ideal material for manufacturing novel tires. The frog legs are flexible and powerful, so that the frog can bounce and fall on the ground stably and freely. Therefore, the structural design of the non-pneumatic tire is carried out by imitating the leg structure of the frog, the thought and the method are provided for improving the performance of the non-pneumatic tire, and the operation stability and the driving smoothness of the vehicle can be improved by applying the structure.

Disclosure of Invention

In some embodiments of the application, the support body group is designed according to the structure of the leg of the frog, so that the rigidity decoupling design of the non-pneumatic tire can be realized, and the control stability is improved; the support body group adopts a staggered arrangement mode, so that the energy of noise is dispersed, and the influence of the rotation mode and the harmonic waves of the tire on a spectrogram is avoided, so that the noise of the tire is reduced; the support body groups are arranged between the first connecting surface and the second connecting surface along the circumferential direction of the tire, the angle between the adjacent support body groups can be 5-15 degrees, and the number of the support body groups is set through reasonable layout, so that the heat dissipation performance of the non-pneumatic tire cannot be influenced by too many support body groups, the operating stability cannot be reduced and the use of the non-pneumatic tire cannot be influenced by too few support body groups.

In some embodiments of the present application, the arrangement of the webs 4 extending in the axial direction is improved to maximize the distribution of noise energy over a wider frequency range, avoiding peaks in a narrow frequency range.

In some embodiments of the application, in order to better enable the non-pneumatic tire to realize a rigidity decoupling design, the structure of the support body is improved, the support body is in an irregular Z shape, and one end of the first connecting body is connected to the outer side of the first connecting surface; the second connecting body is fixedly connected with the other end of the first connecting body; and one end of the third connecting body is connected to the inner side of the second connecting surface, and the other end of the third connecting body is integrally formed with the first connecting body through the second connecting body. The length of the second connector is not less than that of the first connector, and the lengths of the first connector and the second connector are both greater than that of the third connector. The included angle between the first connector and the second connector can be 70-110 degrees; the angle of the included angle between the second connector and the third connector can be 50-90 degrees. The opening direction of the included angle between the first connecting body and the second connecting body of the two supporting bodies is opposite to that of the included angle between the second connecting body and the third connecting body. The two supporting bodies are designed according to the leg structure of the frog, so that the rigidity of each supporting body changes along the preset direction. When the spoke plate is subjected to vertical and longitudinal loads, the spoke plate is easy to bend and deform along the loading direction, so that the rigidity is low; however, during lateral loading, the upper end and the lower end are fixed, and lateral bending of the spoke plate is not easy to realize, so that the lateral rigidity is high, and the rigidity decoupling design is realized.

In some embodiments of the application, the reinforced shear band adopts a shear band structure, so that the pressure of the grounding trace can be uniformly distributed, and the wear resistance is improved; the tire tread is made of rubber materials, is positioned on the outer surface of the tire and has good wear resistance and wet skid resistance; the tread 2 positioned on the outer surface of the tire comprises a plurality of longitudinal pattern grooves, and the drainage capacity can be improved and the tire is prevented from sideslipping by additionally arranging the pattern grooves; the cap ply layer 31 is made of nylon material; the belt 32 is made of steel wire.

The invention aims to provide a non-pneumatic tire, which solves the problems of poor bearing capacity, high noise and poor heat dissipation performance of the existing non-pneumatic tire.

To achieve the above object, the present invention provides a non-pneumatic tire including a hub; the tire tread is sleeved on the hub; a reinforced shear band attached to the inner side of the tread; the spoke plate is fixed between the reinforced shear band and the hub; the web includes: a plurality of support body groups, wherein the adjacent support body groups are arranged in a staggered manner; each support body group consists of two support bodies, any support body is in an irregular Z shape, and the directions of the two support bodies in the same support body group are opposite; the first connecting surface is connected to the outer side of the hub and used for fixing one end of the supporting body; and the second connecting surface is connected to the inner side of the reinforced shear band and used for fixing the other end of the support body.

In some embodiments of the present application, the support body group is arranged in the tire circumferential direction between the first connection surface and the second connection surface.

In some embodiments of the present application, the support comprises: one end of the first connecting body is connected to the outer side of the first connecting surface; the second connecting body is fixedly connected with the other end of the first connecting body; and one end of the third connecting body is connected to the inner side of the second connecting surface, and the other end of the third connecting body is integrally formed with the first connecting body through the second connecting body.

In some embodiments of the present application, the length of the second connector is not less than the length of the first connector, and the lengths of the first connector and the second connector are both greater than the length of the third connector.

In some embodiments of the present application, the cross-sectional area of the support body decreases in a direction from the first connection surface to the second connection surface.

In some embodiments of the present application, each of the support groups consists of two supports, in particular: each support body group consists of a left support body and a right support body, and the distance of a perpendicular line between the left support body and the right support body along the width direction of the section of the tire is more than 0; the left side surface of the left support body is flush with the left side surface of the first connecting surface and the left side surface of the second connecting surface; the right side surface of the right support body is flush with the right side surface of the first connecting surface and the right side surface of the second connecting surface.

In some embodiments of the present application, the reinforced shear band comprises: a cap ply connected to an inner side of the tread; and a belt layer connected to the inner side of the cap ply layer.

In some embodiments of the present application, the belt comprises: a first belt ply connected to an inner side of the cap ply layer; and a second belt layer connected to an inner side of the first belt layer.

In some embodiments of the present application, the support is made of a polyurethane material.

In some embodiments of the present application, a rounded corner is disposed between the first connecting body and the first connecting surface, between the first connecting body and the second connecting body, between the second connecting body and the third connecting body, and between the third connecting body and the second connecting surface.

The invention discloses a non-pneumatic tire, which has the following technical effects compared with the prior art:

(1) the bionic principle is adopted, so that the rigidity decoupling design of the non-pneumatic tire is realized, and the operating stability is improved;

(2) the two support bodies are arranged in a staggered mode, so that high noise is avoided, and the overall amplitude of the noise is reduced;

(3) a reinforced shear band structure is added, so that the pressure of the grounding trace is uniformly distributed, and the wear resistance is improved;

(4) the gaps among the radial plates accelerate the exchange between heat and air, and improve the drainage efficiency;

(5) the support body is made of high-strength and high-elasticity polyurethane materials, so that the bearing mode of the tire is changed, and the bearing capacity is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.

FIG. 1 is a schematic view of a non-pneumatic tire of the present invention;

FIG. 2 is a front elevational view of the non-pneumatic tire of the present invention;

FIG. 3 is a schematic view of a support assembly of the present invention;

FIG. 4 is a schematic view of the reinforced shear band of the present invention;

FIG. 5 is a schematic view of an 145/70R format support stack of the present invention;

wherein: 1. a hub; 2. a tread; 3. strengthening the shear band; 31. a cap ply layer; 32. a belt ply; 321. a first belt layer; 322. a second belt layer; 4. a web; 40. a support group; 41. a first connection face; 42. a support body; 43. a second connection face; 44. a left support; 45. a right support body; 421. a first connecting body; 422. a second connector; 423. a third connector.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

As shown in fig. 1 to 5, the present invention discloses a non-pneumatic tire comprising a hub 1; the tire tread 2 is sleeved on the hub 1; a reinforced shear band 3 attached to the inner side of the tread 2; the spoke plate 4 is fixed between the reinforced shear band 3 and the hub 1; the web 4 includes: a plurality of supporter groups 40, adjacent supporter groups 40 being staggered; each support body group 40 consists of two support bodies 42, any support body 42 is in an irregular Z shape, and the directions of the two support bodies 42 in the same support body group 40 are opposite; a first connecting surface 41 connected to the outer side of the hub 1 for fixing one end of the supporting body 42; and a second connection surface 43 connected to the inside of the reinforced shear band 3 for fixing the other end of the support body 42.

It should be noted that the thickness of the first connecting surface 41 and the thickness of the second connecting surface 43 can be determined according to the specification of the tire, and the thickness of the first connecting surface 41 and the thickness of the second connecting surface 43 of tires with different specifications are different;

as shown in fig. 2, the support body group 40 is designed according to the leg structure of the frog, so that the rigidity decoupling design of the non-pneumatic tire is realized, and the operation stability is improved; the specific number of support groups 40 is determined by the actual situation. The first connecting surface 41 and the second connecting surface 43 are formed on the support body set 40 in a winding manner and are integrated into a whole by press-molding vulcanization in a vulcanizing machine.

The support body groups 40 are arranged in a staggered mode, so that gaps among the radial plates 4 are increased, the exchange between heat and air is accelerated, and the heat dissipation performance of the radial plates 4 is improved; gaps among the radial plates 4 also improve the drainage efficiency in rainy days;

the support body group 40 adopts a staggered arrangement mode, so that the energy of noise is dispersed, the influence of the rotation mode and the harmonic waves of the tire on a spectrogram is avoided, and the noise of the tire is reduced.

It should be noted that the above solution of the preferred embodiment is only one specific implementation proposed in the present application, and those skilled in the art can determine the thicknesses of the first connection surface 41 and the second connection surface 43 according to practical situations, which does not affect the protection scope of the present application.

According to some embodiments of the present application, the support body group 40 is arranged in the tire circumferential direction between the first connection face 41 and the second connection face 43.

The angle between adjacent support body groups 40 can be 5-15 degrees, and the number of the support body groups 40 is set through reasonable layout, so that the heat radiation performance of the non-pneumatic tire cannot be influenced by setting the support body groups 40 too much, and the use of the non-pneumatic tire cannot be influenced by reducing the operation stability due to setting too little.

It should be noted that the above solution of the preferred embodiment is only one specific implementation proposed in the present application, and those skilled in the art can select the selection of the angle between the adjacent support body groups 40 according to practical situations, which does not affect the protection scope of the present application.

In some embodiments according to the present application, the support body 42 comprises: a first connecting body 421 having one end connected to the outside of the first connecting surface 41; a second connection body 422 fixedly connected to the other end of the first connection body 421; the third connecting body 423 has one end connected to the inside of the second connection surface 43 and the other end integrally formed with the first connecting body 421 through the second connecting body 422.

The arrangement mode that the spoke plates 4 extend along the axial direction is adopted, so that the noise peak value is larger, and the noise is larger, the support body 42 is designed by imitating frog legs, the arrangement mode that the spoke plates 4 extend along the axial direction is changed, the noise energy is distributed on a wider frequency range to the greatest extent, and the peak value is avoided in a narrow frequency range.

It should be noted that the supporting bodies 42 are all irregular Z-shaped, and an included angle between the first connecting body 421 and the second connecting body 422 may be 70-110 °; the angle between the second connection body 422 and the third connection body 423 may be 50 ° to 90 °. The opening directions of the included angles between the first connecting body 421 and the second connecting body 422 of the two supporting bodies 42 are opposite to each other, and the opening directions of the included angles between the second connecting body 422 and the third connecting body 423 are opposite to each other. The supporting bodies 42 of the two supporting bodies 42 are designed according to the leg structures of the frogs, so that the rigidity of each direction is changed according to the preset direction. When the radial plate 4 is subjected to vertical and longitudinal loads, the radial plate is easy to bend and deform along the loading direction, so that the rigidity is low; however, during lateral loading, because the upper end and the lower end are fixed, lateral bending of the spoke plate 4 is not easy to realize, so that the lateral rigidity is higher, and the rigidity decoupling design is realized.

To better enable the non-pneumatic tire to achieve a stiffness decoupled design, according to some embodiments of the present application, the length of second link 422 is no less than the length of first link 421, and the lengths of first link 421 and second link 422 are both greater than the length of third link 423.

It should be noted that the above solution of the preferred embodiment is only a specific implementation manner proposed in the present application, and a person skilled in the art may determine the length of the first connecting body 421, the second connecting body 422 and the third connecting body 423 according to practical situations, which does not affect the protection scope of the present application.

To better enable a stiffness decoupled design for a non-pneumatic tire, the cross-sectional area of the support body 42, according to some embodiments of the present application, is decreasing in the direction from the first connection face 41 to the second connection face 43.

It should be noted that the above solution of the preferred embodiment is only one specific implementation proposed in the present application, and those skilled in the art can determine the cross-sectional area of the supporting body 42 according to practical situations, which does not affect the protection scope of the present application.

According to some embodiments of the present application, each group of struts 40 consists of two struts, in particular: each support body group 40 consists of a left support body 42 and a right support body, and the distance of a vertical line between a left support body 44 and a right support body 45 along the width direction of the section of the tire is more than 0; the left side surface of the left support 44 is flush with the left side surface of the first connecting surface 41 and the left side surface of the second connecting surface 43; the right side surface of the right supporting body 45 is flush with the right side surface of the first connecting surface 41 and the right side surface of the second connecting surface 43.

The distance between the left support body 44 and the right support body 45 of the adjacent support body group 40 along the width direction of the section of the tire is larger than 0, so that the heat radiation performance of the non-pneumatic tire is improved;

the left side surface of the left support 44 is flush with the left side surface of the first connecting surface 41 and the left side surface of the second connecting surface 43; the right side surface of the right support 45 is flush with the right side surface of the first connecting surface 41 and the right side surface of the second connecting surface 43, that is, the plurality of support groups 40 are flush with the two side surfaces of the web 4 formed by the first connecting surface 41 and the second connecting surface 43.

It should be noted that the above solution of the preferred embodiment is only a specific implementation manner proposed in the present application, and a person skilled in the art may express the distribution manner of specific positions of the left support 44 of the support group 40 and the right support 45 of the adjacent support group 40 according to practical situations, which does not affect the protection scope of the present application.

According to some embodiments of the present application, reinforced shear band 3 comprises: a cap ply 31 connected to the inner side of the tread 2; the belt 32 is connected to the inner side of the cap ply 31.

It should be noted that, the reinforced shear band 3 adopts a shear band structure, so that the pressure of the ground contact patch can be uniformly distributed, and the wear resistance can be improved. The tread 2 is made of rubber materials, and the tread 2 is positioned on the outer surface of the tire and has good wear resistance and wet skid resistance; the tread 2 positioned on the outer surface of the tire comprises a plurality of longitudinal pattern grooves, and the drainage capacity can be improved and the tire is prevented from sideslipping by additionally arranging the pattern grooves; the cap ply layer 31 is made of nylon material; the belt 32 is made of steel wire.

It should be noted that the above solution of the preferred embodiment is only one specific implementation proposed in the present application, and those skilled in the art can select the material of the tread 2, the material of the cap ply 31 and the material of the belt 32 according to practical situations, which does not affect the protection scope of the present application.

According to some embodiments of the present application, the belt 32 comprises: a first belt layer 321 connected to the inside of the cap ply layer 31; and a second belt layer 322 connected to the inside of the first belt layer 321.

Explained further, the first belt layer 321 and the second belt layer 322 are arranged in the same direction or in a crossed manner, and the design of the staggered direction between the belt layers and the tire circumferential direction can obviously reduce the shear strain energy between the crossed belt layers and reduce the heat generation of the tire shoulder, thereby improving the endurance performance, the high-speed performance and the service life of the tire.

It should be noted that the above solution of the preferred embodiment is only one specific implementation proposed in the present application, and those skilled in the art can select the number of belt layers according to practical situations, which does not affect the protection scope of the present application.

In some embodiments according to the present application, the support body 42 is made of a polyurethane material.

It should be noted here that the polyurethane material has the characteristics of high strength, high elasticity, long service life, simple production process and the like, and compared with a rubber material, the polyurethane material has the advantages of higher wear resistance and tensile strength, and has good shock absorption and shock absorption effects when used, so that the polyurethane material is an ideal material for manufacturing a novel tire.

It should be noted that the above solution of the preferred embodiment is only one specific implementation proposed in the present application, and those skilled in the art can select the material for manufacturing the supporting body 42 according to practical situations, which does not affect the protection scope of the present application.

According to some embodiments of the present disclosure, rounded corners are disposed between the first connecting body 421 and the first connecting surface 41, between the first connecting body 421 and the second connecting body 422, between the second connecting body 422 and the third connecting body 423, and between the third connecting body 423 and the second connecting surface 43.

It should be noted that stress can be removed by designing a fillet, so as to improve the stress concentration; the transition performance can be improved by designing the rounding off, and the support body 42 can be attractive; the actual radius is sized according to the tire specifications.

It should be noted that the above solution of the preferred embodiment is only one specific implementation manner proposed in the present application, and those skilled in the art can select the size of the fillet according to the actual situation, which does not affect the protection scope of the present application.

Compared with the prior art, the non-pneumatic tire provided by the invention has the following technical effects:

(1) the bionic principle is adopted, so that the rigidity decoupling design of the non-pneumatic tire is realized, and the operating stability is improved; (2) the two support bodies are arranged in a staggered mode, so that high noise is avoided, and the overall amplitude of the noise is reduced; (3) a reinforced shear band structure is added, so that the pressure of the grounding trace is uniformly distributed, and the wear resistance is improved; (4) the gaps among the radial plates accelerate the exchange between heat and air, and improve the drainage efficiency; (5) the support body is made of high-strength and high-elasticity polyurethane materials, so that the bearing mode of the tire is changed, and the bearing capacity is improved.

In the specific embodiment 1, the method comprises the following steps of,

as shown in fig. 1 to 5, the 145/70R standard tire is taken as an example for further explanation.

145/70R size tire, 145 represents the tire with a section width of 145 mm, wherein the section width of the tire refers to the maximum distance between two outer sides of the tire after the tire is inflated according to the specification; 70 represents the aspect ratio of the tire of 70:100, i.e. the section height of the tire is 145 x 0.7=101.5 mm; r represents that the tire is a radial tire.

As shown in fig. 2, a non-pneumatic tire includes a hub 1, a tread 2, a reinforcing shear band 3, and a web 4 fixed between the reinforcing shear band 3 and the hub 1; the web 4 includes: a plurality of supporter groups 40, adjacent supporter groups 40 being staggered; each support body group 40 consists of two support bodies 42, any support body 42 is in an irregular Z shape, and the directions of the two support bodies 42 in the same support body group 40 are opposite; a first connecting surface 41 connected to the outer side of the hub 1 for fixing one end of the supporting body 42; and a second connection surface 43 connected to the inside of the reinforced shear band 3 for fixing the other end of the support body 42.

Wherein, the thickness of the first connecting surface 41 and the thickness of the second connecting surface 43 are determined according to the specification of the tire; the first connecting surface 41 and the second connecting surface 43 are formed on the support body group 40 in a winding manner and are integrated by press-molding vulcanization in a vulcanizing machine.

The support body group 40 adopts a staggered arrangement mode, the support body group 40 is arranged between the first connecting surface 41 and the second connecting surface 43 along the circumferential direction of the tire, wherein the support body group 40 is designed by imitating the leg structure of the frog, and the frog leg is flexible and powerful so that the frog can bounce and land stably;

in order to better realize rigidity decoupling of the non-pneumatic tire through the bionic frog leg, the number of the support body groups is determined according to the specification of the tire, the number of the support body groups is preset to be 36 in the support body groups 40 of the 145/70R specification tire, then the 36 support body groups 40 are in an annular array with the axle center of the tire as the center of a circle, and the angle between the adjacent support body groups 40 is 10 degrees; it should be noted that the number of support groups is not necessarily constant; the support body groups 40 of the 145/70R standard tire are preset to 36, so that the heat radiation performance of the non-pneumatic tire cannot be influenced by too many support body groups 40, and the use of the non-pneumatic tire cannot be influenced by reduced steering stability caused by too few support body groups.

The supporting body 42 is designed by imitating frog legs, changes the arrangement mode of the radial plate 4 extending along the axial direction, furthest distributes the energy of noise in a wider frequency range, and avoids the peak value in a narrow frequency range; specifically, each support group 40 is composed of two supports 42, specifically: each support body group 40 consists of a left support body 44 and a right support body, and the distance of a vertical line between the left support body 44 and the right support body 45 along the width direction of the section of the tire is more than 0; the left side surface of the left support 44 is flush with the left side surface of the first connecting surface 41 and the left side surface of the second connecting surface 43; the right side surface of the right supporting body 45 is flush with the right side surface of the first connecting surface 41 and the right side surface of the second connecting surface 43.

The support body 42 includes: a first connecting body 421 having one end connected to the outside of the first connecting surface 41; a second connection body 422 fixedly connected to the other end of the first connection body 421; a third connection body 423 having one end connected to the inner side of the second connection surface 43 and the other end integrally formed with the first connection body 421 through a second connection body 422; the length of second connecting body 422 is not less than the length of first connecting body 421, and the lengths of first connecting body 421 and second connecting body 422 are both greater than the length of third connecting body 423.

The supporting bodies 42 are all in an irregular Z shape, and the included angle between the first connecting body 421 and the second connecting body 422 can be 70-110 degrees; the angle between the second connection body 422 and the third connection body 423 may be 50 ° to 90 °. The opening directions of the included angles between the first connecting body 421 and the second connecting body 422 of the two supporting bodies 42 are opposite to each other, and the opening directions of the included angles between the second connecting body 422 and the third connecting body 423 are opposite to each other. The support body 42 is designed by imitating the leg structure of the frog, so that the rigidity of each direction is changed according to the preset direction. When the support body is subjected to vertical and longitudinal loads, the support body 42 is easy to bend and deform along the loading direction, so that the rigidity is low; however, during lateral loading, since the upper and lower ends are fixed, lateral bending of the support body 42 is not easy to achieve, so that lateral stiffness is large, and therefore a stiffness decoupling design is achieved.

145/70R, wherein AB represents the length of the first connector 421, BC represents the length of the connector, CD represents the length of the third connector 423, and AB, BC, CD are 35cm, 15cm in sequence;

alpha is an arc angle corresponding to the circumference of the non-pneumatic tire occupied by the support body group 40, angle ABC is an included angle between the first connector 421 and the second connector 422, angle BCD is an included angle between the second connector 422 and the third connector 423, and the angles alpha, angle ABC and angle BCD are 30 degrees, 95 degrees and 70 degrees in sequence;

l1 is the distance between the first connector 421 and one side of the first connector 421, L2 is the distance between the third connector 423 and one side of the second connector 422, L3 is the diameter of the bottom of the first connector 421, L4 is the diameter of the top of the first connector 421 or the bottom of the second connector 422, L5 is the diameter of the bottom of the second connector 422 or the top of the third connector 423, and L1, L2, L3, L4 and L5 are 15mm, 20mm, 15mm, 10mm and 5mm in length;

in order to avoid the generation of stress concentration, chamfer design is carried out at the connecting position, and R1, R2, R3 and R4 are 1mm, 2mm, 5mm and 20mm in sequence.

The above data parameter selection is not the only determined value, and the worker in the art can select the data parameter according to the actual situation, which does not affect the protection scope of the present application.

The determination of the parameters of the tire web 4 with different specifications specifically comprises the following steps:

step a, obtaining specification parameters of a tire;

step B, determining the thickness A of the first connecting surface 41, the thickness B of the second connecting surface 43 and the data parameters of the support body group 40 according to the data acquired in the step a;

step c, after determining the thickness a of the first connection surface 41, the thickness B of the second connection surface 43 and the manufacturing parameters of the data parameters of the support body group 40, processing the web 4 by the processing device;

in step a, if the specification of the tire is 195/55/R1685V, the specification parameters of the tire include: 195-refers to a tire section width of 195 mm; 55-refers to the tire aspect ratio, i.e., the section height is 55% of the width; r-means that the tire is a radial tire; 15-means the rim diameter is 15 inches; 85-load index 85 represents the maximum weight bearing of 515 kilograms, four tires 515 x 4=2060 kilograms; v-refers to a speed level of 240 km/h.

In step b, the data parameters of the support body group 40 include the number of the support body groups 40, the angle between adjacent support body groups 40, the perpendicular distance between the left support body 44 and the right support body 45 along the width direction of the tire section, the cross sectional area of the support body 42, the length of the first connecting body 421, the length of the second connecting body 422, the length of the third connecting body 423, the angle between the first connecting body 421 and the second connecting body 422, the angle between the second connecting body 422 and the third connecting body 423, and the size of the fillet.

In the specific embodiment 2, the method comprises the following steps of,

as shown in fig. 1-5, the 195/55R tire is further illustrated.

195/55R tire, 195 represents the tire with a section width of 195 mm, wherein the section width of the tire refers to the maximum distance between two outer sides of the tire after the tire is inflated according to the specification; 55 represents the aspect ratio of the tire of 55:100, i.e. the section height of the tire is 195 x 0.55=107.25 mm; r represents that the tire is a radial tire.

Wherein, the thickness of the first connecting surface 41 and the thickness of the second connecting surface 43 are determined according to the specification of the tire; the first connecting surface 41 and the second connecting surface 43 are formed on the support body set 40 in a winding manner and are integrated into a whole by press-molding vulcanization in a vulcanizing machine.

in order to better realize rigidity decoupling of the non-pneumatic tire through the bionic frog leg, the number of the support body groups is determined according to the specification of the tire, the number of the support body groups is preset to be 36 in the support body groups 40 of the 195/55R specification tire, then the 36 support body groups 40 are in an annular array with the axle center of the tire as the center of a circle, and the angle between the adjacent support body groups 40 is 10 degrees; it should be noted that the number of support groups is not necessarily constant; the support body group 40 of the 145/70R standard tire is preset to 36, so that the heat radiation performance of the non-pneumatic tire is not influenced by too many support body groups 40, and the use of the non-pneumatic tire is not influenced by the reduction of the steering stability due to too few support body groups.

145/70R size tire, by labeling support assembly 40, for convenience, wherein AB represents the length of first connector 421, BC represents the length of the connector, CD represents the length of third connector 423, and AB, BC, CD are 38cm, 16cm in sequence;

alpha is an arc angle corresponding to the circumference of the non-pneumatic tire occupied by the support body group 40, angle ABC is an included angle between the first connector 421 and the second connector 422, angle BCD is an included angle between the second connector 422 and the third connector 423, and the angles alpha, angle ABC and angle BCD are 30 degrees, 100 degrees and 75 degrees in sequence;

l1 is the distance between the first connector 421 and one side of the first connector 421, L2 is the distance between the third connector 423 and one side of the second connector 422, L3 is the diameter of the bottom of the first connector 421, L4 is the diameter of the top of the first connector 421 or the bottom of the second connector 422, L5 is the diameter of the bottom of the second connector 422 or the top of the third connector 423, and L1, L2, L3, L4 and L5 are 20mm, 25mm, 20mm, 12mm and 8mm in length;

In summary, the embodiment of the invention provides a non-pneumatic tire, which has strong heat dissipation capacity and high operation stability, and the non-pneumatic tire also reduces noise generated by movement and improves drainage efficiency in rainy days.

Claims

1. A non-pneumatic tire, comprising:

a hub;

the tire tread is sleeved on the hub;

a reinforced shear band attached to the inner side of the tread;

the spoke plate is fixed between the reinforced shear band and the hub;

the web includes:

a plurality of support body groups, wherein the adjacent support body groups are arranged in a staggered manner; each support body group consists of two support bodies, any support body is in an irregular Z shape, and the directions of the two support bodies in the same support body group are opposite;

the first connecting surface is connected to the outer side of the hub and used for fixing one end of the supporting body;

and the second connecting surface is connected to the inner side of the reinforced shear band and used for fixing the other end of the support body.

2. The non-pneumatic tire of claim 1, wherein the support body group is arranged in the tire circumferential direction between the first connection face and the second connection face.

3. A non-pneumatic tire according to claim 1, wherein said support body comprises:

one end of the first connecting body is connected to the outer side of the first connecting surface;

the second connecting body is fixedly connected with the other end of the first connecting body;

and one end of the third connecting body is connected to the inner side of the second connecting surface, and the other end of the third connecting body is integrally formed with the first connecting body through the second connecting body.

4. The non-pneumatic tire of claim 3, wherein the length of the second connector is not less than the length of the first connector, and the length of each of the first connector and the second connector is greater than the length of the third connector.

5. A non-pneumatic tire according to claim 1, wherein said support body has a decreasing cross-sectional area in a direction from said first connection face to said second connection face.

6. The non-pneumatic tire according to claim 1, wherein each of the support groups is composed of a left support and a right support, and a perpendicular distance between the left support and the right support in a tire section width direction is greater than 0;

the left side surface of the left support body is flush with the left side surface of the first connecting surface and the left side surface of the second connecting surface;

the right side surface of the right support body is flush with the right side surface of the first connecting surface and the right side surface of the second connecting surface.

7. The non-pneumatic tire of claim 1, wherein the reinforced shear band comprises:

a cap ply connected to an inner side of the tread;

and a belt layer connected to the inner side of the cap ply layer.

8. The non-pneumatic tire of claim 7, wherein said belt comprises:

a first belt ply connected to an inner side of the cap ply layer;

and a second belt layer connected to an inner side of the first belt layer.

9. A non-pneumatic tyre as claimed in claim 7, wherein said support body is of polyurethane material.

10. A non-pneumatic tire according to claim 3, wherein rounded corners are provided between said first connector and said first connection surface, between said first connector and said second connector, between said second connector and said third connector, and between said third connector and said second connection surface.