CN114056006A

CN114056006A - Tyre and manufacturing method

Info

Publication number: CN114056006A
Application number: CN202010792678.3A
Authority: CN
Inventors: 朱健鹏; 潘川
Original assignee: Qingdao Muwo Technology Co ltd
Current assignee: Qingdao Muwo Technology Co ltd
Priority date: 2020-08-10
Filing date: 2020-08-10
Publication date: 2022-02-18
Anticipated expiration: 2040-08-10
Also published as: CN114056006B

Abstract

The invention provides a novel dual-purpose tire which can be used for a long time under the condition of inflation or non-inflation and a molding process thereof. The tire comprises a tire tread, a belt ply, a mother tire body, a sub tire body, an inner support body, an inner pressure bearing ring, a steel ring, a breathing hole and the like from outside to inside in sequence; the high molecular liquid mixture with different formulas is adopted to tightly combine each part into a whole through curing and crosslinking reaction, thereby not only meeting the different requirements of each part of the tire on the material performance, but also ensuring the rapid molding of the tire, the production efficiency of the tire is high, and the production cost can be effectively reduced. Suitable for heavy truck, trailer, light truck, off-road vehicle, ATV, bus, aircraft, agricultural, mining, bicycle, motorcycle and passenger vehicle tires.

Description

Tyre and manufacturing method

Technical Field

The invention relates to the technical field of tires, in particular to a dual-purpose tire and a manufacturing process thereof.

Background

With the development of the tire industry, pneumatic tires have become a general-purpose tire due to their excellent characteristics, which is widely used in various vehicles, machines, airplanes, and mobile devices. However, the pneumatic tire has some defects due to its own characteristics: if the tire pressure is unsuitable to influence the condition of the tire under different temperatures and road conditions, especially, potential safety hazards such as tire burst exist in the use process, accidents caused by tire burst often cause casualties of people, therefore, technical personnel in the field of tires begin to develop non-pneumatic tires without tire burst, although the non-pneumatic tires can avoid the risk of tire burst, the weight of the tires is almost doubled due to the diversity of internal structures, and the cost cannot be comparable to that of rubber pneumatic tires. The pneumatic tire and the non-pneumatic tire have respective advantages, the two have clear limits, the non-pneumatic tire cannot be inflated due to the structural characteristics, and the pneumatic tire cannot run in a deflated state.

Disclosure of Invention

The invention aims to provide a novel dual-purpose tire which can be normally used for a long time in an inflated state and a non-inflated state and a manufacturing process thereof. The novel tire comprises a tire tread, a belt ply, a circumferential inner support body, a mother tire body, a sub tire body, an inner pressure bearing ring, a steel ring, a breathing hole and the like (figure 1). The tire has high bearing capacity in an inflated or non-inflated state, and is suitable for heavy truck, trailer, light truck, off-road, ATV, bus, airplane, agriculture, mining, bicycle, motorcycle and passenger vehicle tires, and is particularly suitable for engineering tires and giant tires with low speed and high load.

In order to achieve the above purpose, the invention provides the following technical scheme:

a dual-purpose tire is characterized by comprising a tire tread, a belted layer, a mother tire body, a child tire body, a support body, an inner pressure bearing ring, a steel ring, a breathing hole and the like which are sequentially arranged from outside to inside; wherein, the tread is the part of the tire directly contacting with the ground; the belted layer is used for improving the support and stress of the tire; the female carcass comprises an outer carcass part of the tyre, providing partial support; the sub-tire body comprises a framework component of the internal support body of the tire, and the strength and the toughness of the internal support body are enhanced; the inner support body provides the integral support of the tire; the steel ring is arranged in the inner pressure-bearing ring, so that the rigidity of the inner pressure-bearing ring is enhanced, and the stability of the joint of the inner pressure-bearing ring and the rim is ensured; the breathing holes are positioned in the inner pressure bearing ring and are holes for air inlet and outlet of the tire, and the section of the dual-purpose tire is shown as figure 2 (the outline of the tire body is convex).

Preferably, the novel structural tire has various profiles, and is of a concave profile type as shown in fig. 3.

Preferably, the tread is provided with patterns of different shapes.

Preferably, the steel wire belt layers are arranged between the tire tread and the tire body at different angles of 0-180 degrees by using steel wires.

Preferably, the belt layer may have a single-layer or multi-layer structure, and may be formed by single-layer lamination or may be directly woven into multiple layers.

When the steel wire angle of the steel wire belt layer is 0 degree, a single steel wire can be used for winding, as shown in figure 4.

The steel wire of the belt layer can be fixed by weaving polymer fibers or metal filaments, particularly when the angle of the steel wire of the belt layer is 0 degrees.

Preferably, the tire may use a liquid polymer material, and the hardness (shore a) of each component is:

55-95 degrees of tread rubber; the belt ply rubber, the mother tire body rubber, the inner support body rubber are 60-95 degrees, and the inner pressure-bearing ring rubber is 70-95 degrees.

Preferably, the sub-tire body is a framework material of a support body in the tire, and a steel wire or a high polymer fiber curtain can be adopted.

Preferably, the cord winding angle of any layer of the sub-carcass can be performed at any angle.

Preferably, the sub-carcass is wrapped around the inner support core (fig. 5) with a steel wire or cord, as shown in fig. 6.

Preferably, the sub-carcass can be wound with a single inner support core to form a sub-carcass of size 1 or wound with a plurality of inner support cores to form a sub-carcass of size 2, as shown in the schematic view of the sub-carcass in fig. 7.

Preferably, the sub-carcass may be wound with a plurality of layers of cords, and any angle may be used for the carcass steel wire angle.

Preferably, when the sub-carcass is wound with polymer fibers, a single cord may be wound on the support mold, or a cord woven to have a predetermined width may be wound.

Preferably, when the sub-carcass is designed into a multi-layer carcass structure, the sub-carcass can be wound in a manner of mixing a steel carcass layer and a polymer fiber (such as nylon) layer, for example, the first layer can be a steel wire layer, and the second layer is a nylon layer, or the first layer is a nylon layer and the second layer is a steel wire layer.

Preferably, the sub-tire body comprises a framework material and elastomer rubber, and the framework material such as steel wires can be omitted under the condition that the tire guarantees the load.

Preferably, the mother tire body is in a closed inner tire shape, and only the breathing hole is reserved.

The main tire body framework is formed by winding a steel wire around the inner core of the support body, and the steel wire is a cylindrical steel wire ring after winding is finished, and the steel wires of the main tire body are not in contact with each other. (as shown in FIG. 8)

And the starting point and the end point of the steel wire framework materials of the primary and secondary tire bodies are connected by welding and other methods.

Preferably, the steel wire arrangement of the female tire body can be perpendicular (90 degrees) to the tread surface and can be wound at other angles.

Preferably, the mother carcass can be provided as a multi-layer steel wire carcass for reinforcement, and the angle of the steel wires of the carcass can be the same as or different from that of the first layer carcass.

Preferably, the female carcass frame portion may be wound with a cord of a polymer fiber (e.g., a high-strength polymer material such as nylon, polyurethane, etc.), and the carcass polymer cord may be wound at an angle perpendicular (90 °) to the tread surface or at another angle.

Preferably, when the carcass is wound with polymer fibers, the carcass may be wound with a single cord or a cord woven to have a predetermined width.

Preferably, the female carcass can be reinforced by adding a plurality of layers of nylon cord carcasses, and the nylon cords can be used at the same or different angles with the first layer of carcasses.

Preferably, the mother carcass may be locally reinforced with cords of different materials or reinforcing materials.

Preferably, when the mother carcass is designed into a multi-layer carcass structure, the mother carcass can be wound by using a mixed manner of a steel carcass layer and a polymer fiber (such as nylon) layer, for example, the first layer can be a steel wire layer, and the second layer is a nylon layer, or the first layer is a nylon layer and the second layer is a steel wire layer.

Preferably, the mother tire body comprises a framework material and elastomer rubber, and the framework material such as steel wires can be omitted under the condition of ensuring the load.

Preferably, the inner support is a circumferential support member inside the tyre, connecting the tread and the inner pressure-bearing ring.

Preferably, the number of the inner supports of the tire can be different according to the bearing and use scenes, and the tire can be designed into I-type supports and III-type supports as shown in fig. 9 besides II-type inner supports as shown in fig. 2.

Preferably, reinforcing ribs can be additionally arranged between the inner supporting bodies for reinforcing, and the reinforcing ribs are I-S type and III-S type as shown in figure 10.

Preferably, the inner support body may be provided in various shapes, such as a butterfly support as shown in fig. 11.

Preferably, the inner pressure bearing ring closes the whole tire into an O-shaped structure, and the tire is attached to a rim after being mounted on the hub, and only breathing holes are reserved.

Preferably, the steel rings are arranged inside the inner pressure bearing ring, and the using number of the steel rings is determined according to the tire load condition.

Preferably, the steel ring can be arranged on the inner side or the outer side of the mother tyre body.

Preferably, the tire according to any one of the above claims, wherein the manufacturing method comprises:

steel belt layer: please refer to cn201910815970.x, CN 201911421934.1.

Winding the primary and secondary tire bodies:

and (4) winding the sub tire body by adopting special equipment. During winding, one end of the carcass cord is fixed on the inner core. The wound godet roller is continuously passed through the inner core inner ring. The gap is controlled according to different requirements of the carcass design during winding. The termination point is fixed after winding is completed as shown in fig. 6.

And (4) winding the mother tyre body by adopting special equipment. During winding, one end of the carcass cord is fixed on the inner core. The cord is wound around several cores and a godet wheel is continuously passed through the inner core turns. The gap is controlled according to different requirements of the carcass design during winding. The termination point was fixed after winding was completed as shown in fig. 8.

The inner core is fixed on the outer mold part of the inner pressure-bearing ring, the tire body and the support body are cast firstly, the outer mold is opened after the tire body is formed, and then the seam allowance is cast. And winding the belt layers with different angles on the tire body after the tire body is molded by casting, and casting the tire tread after the pattern block mold is closed again, so that the whole tire is molded.

For a belt at 0 ° to tread, a cord may be wrapped around the carcass after the carcass is prepared, as shown in fig. 4.

After the pouring is finished, the tire with the inner core is placed into a post-vulcanization chamber after being demoulded.

During the post-cure, the inner core is removed, completing the manufacture of the entire tire.

The structural tire has the following characteristics: (1) the dual-purpose tire can achieve the load of a rubber solid tire when being inflated; (2) the dual-purpose tire can achieve the load of the pneumatic rubber tire under the non-inflation condition; (3) the customer can independently select inflation or non-inflation according to the application scene, so that the customer can conveniently use the tire (4) the tire with the structure can be used under two conditions of inflation and non-inflation, the advantages of both the inflatable tire and the non-inflatable tire are achieved, and no accident occurs after the tire is burst; (5) the weight of the tire is reduced by adopting the circumferential supporting structure, so that the weight of the tire can be reduced to the weight of the rubber pneumatic tire, and the production cost is reduced; (6) when the vehicle is impacted, the dual-purpose tire can still maintain the position of the tire on the rim unchanged, and the safety is high; (7) the technology has simple and efficient production process and low use of fixed assets and production areas. The dual-purpose tire breaks the difference between the structure and the use of the inflatable tire and the non-inflatable tire, so that one structure has two use functions. The dual-purpose tire provided by the invention is suitable for various types of tires, including car tires, truck tires, engineering tires, giant tires, various special tires and the like, and is particularly suitable for engineering tires and giant tires with lower speed and higher load.

Drawings

In order to more clearly illustrate the embodiments of the present application or 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 described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.

FIG. 1 is a three-dimensional structural view of a type II dual-purpose tire;

FIG. 2 is a sectional view of a profile of a type II support cam;

FIG. 3 is a cross-sectional view of a type II support dimple profile;

FIG. 4 is a schematic view of winding a 0 belt;

FIG. 5 is a schematic view of a type II support core;

FIG. 6 is a schematic view of a type II support sub-carcass wound core;

FIG. 7 is a schematic view of the winding of a No. 1, No. 2 carcass around a plurality of cores;

FIG. 8 is a schematic view of a mother carcass wound about an inner core;

FIG. 9 is a cross-sectional view of a type I and type II support tire;

FIG. 10 is a cross-sectional view of an I-S, II-S support tire;

FIG. 11 is a cross-sectional view of a tire with a butterfly-shaped support body;

FIG. 12 is a schematic view of a sub-carcass winding;

FIG. 13 is a schematic view of a III-S core with internal support rib holes;

FIG. 14 is a schematic three-dimensional view of a type II-S tire;

FIG. 15 is a schematic view of a coral type irregular inner support tire;

FIG. 16 is a three-dimensional structure diagram of a type II tire with a foamed inner core

Description of reference numerals:

1. a tread; 2. a belt ply; 3. a parent carcass; 4. a carcass body; 5. an inner support body; 6. an inner pressure-bearing ring; 7. steel rings; 8. a breathing hole;

Detailed Description

In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrases "comprising … …" or "comprising … …" does not exclude the presence of additional elements in a process, method, article, or terminal that comprises the element. Further, herein, "greater than," "less than," "more than," and the like are understood to exclude the present numbers; the terms "above", "below", "within" and the like are to be understood as including the number.

Taking the specification of 12.00-10 tires as an example, the tire comprises a tire tread 1, a belt ply 2, a mother tire body 3, a child tire body 4, an inner support body 5, an inner pressure-bearing ring 6, a steel ring 7 and a breathing hole 8 which are arranged in sequence from outside to inside; wherein, the tread 1 is the part of the tire directly contacting with the ground; the belt ply 2 is used for improving the support and stress of the tire; the parent carcass 3 comprises the main carcass components of the tire; the sub-carcass 4 comprises an inner-tire support carcass member; the inner support body 5 mainly plays a supporting role in the rolling process of the tire; the inner pressure-bearing ring 6 wraps the steel ring 7 and plays a certain role in bearing load; the breathing hole 8 is mainly a gas passage when the tire is inflated and deflated.

Each part of the tire can be made of liquid polymer material such as polyurethane by casting. The structure and function of each component in the tire are as follows:

the tread 1: the tread 1 is the part of the tire in direct contact with the ground, has patterns of different shapes according to different use conditions and different requirements, has the function of protecting the tire body, is also the part of the tire which is used most and has the largest loss, and provides the functions of driving, traction, braking, water drainage and skid resistance, shock absorption, steering and the like. The polyurethane tire can greatly improve the traction performance of vehicles on mud and snow. The strength and the wear resistance of the tread can be improved, and the daily wear loss of the tread can be reduced. The wear resistance of polyurethane is 3-8 times of that of rubber, so that the depth of tyre patterns can be reduced, and the whole weight of the tyre can be reduced by 5-20%.

Belt layer 2: the belted layer 2 is arranged between the tread 1 and the mother tyre body 3 by steel wires according to different angles and is used for improving the supporting and stress parts of the tyre. The main functions are as follows: firstly, the tyre cord layer resists the centrifugal force together with the tyre body cord layer, prevents the outward bulge phenomenon of the tyre crown caused by the action of the centrifugal force, and ensures the stable external diameter and the tyre circumference. Secondly, the desired shape of the tire footprint is controlled, thereby effectively providing grip/traction. Third, it provides rigidity required for the tire to oversteer and turn, and thus provides excellent handling. Fourthly, the invasion of foreign matters on the road surface is resisted. In the polyurethane tire, the polyurethane and the steel wires have natural high viscosity, and meanwhile, carcinogenic toxic substances such as heavy metal, phenol and the like used in the traditional rubber belt layer manufacturing process are avoided in the production and manufacturing process, the operation environment of a workshop is improved, and the pollution and damage to the natural environment in the whole life cycle of a tire product are reduced. The high-strength performance enables the polyurethane all-steel tire to reduce the number of belted layers to the maximum extent, and the weight and the thickness of the tire are reduced, so that the heat generation is reduced.

A mother carcass 3: the carcass 3 comprises the main frame members of the tire for receiving the impact force of the tire, such as the load pressure, the internal air pressure and the lateral shear force of the tire. The polyurethane has higher strength and stronger steel wire and cord thread adhesive force, is similar to the production of a steel wire belted layer, ensures green production and can improve the bearing capacity of the tire in the manufacturing process.

A carcass 4; the sub-carcass 4 is a framework material surrounding the inner support body, and mainly plays a role in enhancing the strength of the inner support body and improving the load.

Inner support body 5: the inner support body 5 is circumferentially supported in the tire, plays a good supporting role in the rolling process of the tire, and can adjust the area of a mark and the pressure distribution of a tire tread by adjusting the structural parameters of the inner support body. The main pressure-bearing component is used when the tire is not inflated, so that the normal running of the tire is ensured. The number, width and shape of the inner supporting bodies can be designed according to the actual use condition of the tire.

Inner pressure-bearing ring 6: the inner pressure-bearing ring 6 is a pressure-bearing part with a certain thickness around the rim, the inner side of the inner pressure-bearing ring clings to the rim, the outer side of the inner pressure-bearing ring is connected with the inner support body, and the steel ring is wrapped in the inner support body after pouring.

Steel ring 7: the rim 7 is a member for securing the tire to the rim and is an important bearing point.

All relevant modifications of the above structure are covered by this patent protection.

The materials are described by way of example as liquid polyurethanes. The polyurethane has excellent wear resistance and puncture resistance, and the basic properties of the required raw materials are as follows (table 1): the polyurethane tire with the specification of 12.00-10 is mainly divided into a tire tread, a primary and secondary tire body, an inner support body, an inner pressure bearing ring and other different material parts, wherein the tire tread is made of a material with the Shore A55-95 degrees; the tyre body, the belt ply and the inner support body are made of materials with Shore A60-95 degrees; the hardness of the inner pressure-bearing ring is Shore A70-95 degrees.

TABLE 1 Property requirements of the polyurethane tire formulation

Example 1

The type II support structure is described as an example. As shown in fig. 1, there are two circumferential supports inside the tire, and polyurethane is used as the tire manufacturing material, and the tire manufacturing method is as follows:

steel belt layer: please refer to cn201910815970.x, CN 201911421934.1.

Winding the primary and secondary tire bodies:

and (4) winding the sub tire body by adopting special equipment. During winding, one end of the 3+9+15 × 0.175+0.15NT cord is fixed onto a single core. The wound godet wheel continuously passes through the inner core inner ring. The gap is controlled according to different requirements of the carcass design during winding. The termination point is fixed after winding is completed as shown in fig. 12. Winding of all the individual cores is completed as shown in fig. 6.

And (4) winding the mother tyre body by adopting special equipment. During winding, one end of the 3+9+15 × 0.175+0.15NT cord is fixed to the outermost ring of the inner core. The cord is wound around several cores and a godet wheel is continuously passed through the inner core turns. The gap is controlled according to different requirements of the carcass design during winding. The termination point was fixed after winding was completed as shown in fig. 8.

And fixing the inner core on the outer mold part of the inner pressure-bearing ring, firstly pouring the tire body and the support body, opening the outer mold after molding, and then pouring the seam allowance. And winding the belt layers with different angles on the tire body after the tire body is molded by casting, and casting the tire tread after the pattern block mold is closed again, so that the whole tire is molded.

For a belt with a 0 ° angle to the tread, a steel wire may be wrapped around the carcass after the carcass is completely prepared, as shown in fig. 4.

After the casting is completed, the tire and the inner core are taken out of the mold together. The tire with the inner core is placed in a post-cure chamber. During the post-cure, the inner core is removed, completing the manufacture of the entire tire.

The core removal process is described in patent 2020107941410.

Example 2

Taking a polyurethane material with a II-type support structure as an example, a nylon cord is taken as a framework material of a primary and secondary carcass cord, and the manufacturing method is as follows:

steel belt layer: please refer to cn201910815970.x, CN 201911421934.1.

Winding the primary and secondary tire bodies:

and (4) winding the sub tire body by adopting special equipment. During winding, one end of a polymer fiber (nylon) cord is fixed on the single inner core. The wound godet wheel continuously passes through the inner core inner ring. The gap is controlled according to different requirements of the carcass design during winding. The termination point is fixed after winding is completed as shown in fig. 12. Winding of all the individual cores is completed as shown in fig. 6.

And (4) winding the mother tyre body by adopting special equipment. During winding, one end of a high polymer fiber (nylon) cord is fixed on the outermost ring of the inner core. The cord is wound around several cores and a godet wheel is continuously passed through the inner core turns. The gap is controlled according to different requirements of the carcass design during winding. The termination point was fixed after winding was completed as shown in fig. 8.

The core removal process is described in patent 2020107941410.

Example 3

Taking a tire with support ribs as an example, the manufacturing method comprises the following steps:

steel belt layer: please refer to cn201910815970.x, CN 201911421934.1.

Winding the primary and secondary tire bodies:

The difference between this embodiment 3 and

embodiments

1 and 2 is that the inner core of the sub-carcass has a plurality of holes, as shown in fig. 13. After casting, I-S and III-S structures, as well as II-S, are formed as shown in FIG. 10. FIG. 14 is a schematic three-dimensional perspective view of a II-S tire with support ribs.

The core removal process is described in patent 2020107941410.

Example 4

Taking the special-shaped support as an example, the method for manufacturing the polyurethane tire comprises the following steps:

steel belt layer: please refer to cn201910815970.x, CN 201911421934.1.

This example 4 is different from examples 1 and 2 in that the core is shaped like coral. After the pouring is finished, the tire structure of the coral-shaped inner support body and the special-shaped support ribs shown in the figure 15 can be formed.

The core removal process is described in patent 2020107941410.

Example 5

Steel belt layer: please refer to cn201910815970.x for specific processes.

Winding the primary and secondary tire bodies:

In this embodiment, unlike other core materials, the core can be made of a foam material.

After the casting is completed, the tire and the inner core are taken out of the mold together. The tire with the inner core is placed in a post-cure chamber. And finishing post vulcanization, namely finishing the manufacture of the whole tire. The tire with the inner core is shown in fig. 16. The tire is suitable for heavy vehicles with overload environment and large load.

The core removal process is described in patent 2020107941410.

In the technical scheme, the novel dual-purpose tire and the molding process provided by the invention have the following beneficial effects:

the structural tire has the following characteristics: (1) the maximum load of the dual-purpose tire can reach the load of a rubber solid tire when the dual-purpose tire is inflated; (2) the dual-purpose tire can achieve the load of the pneumatic rubber tire under the non-inflation condition; (3) the customer can independently select inflation or non-inflation according to the self application scene, so that the customer can conveniently use the tire (4) the tire with the structure can be used under two conditions of inflation and non-inflation, the advantages of both the inflation tire and the non-inflation tire are achieved, and no accident occurs after the tire is burst; (5) the weight of the tire is reduced by adopting the circumferential supporting structure, so that the weight of the tire can be reduced to the weight of the rubber pneumatic tire, and the production cost is reduced; (6) when the vehicle is impacted, the dual-purpose tire can still maintain the position of the tire on the rim unchanged, and the safety is high; (7) the technology has simple and efficient production process and low use of fixed assets and production areas. The dual-purpose tire breaks the difference between the structure and the use of the inflatable tire and the non-inflatable tire, so that one structure has two use functions. The dual-purpose tire provided by the invention is suitable for various types of tires, including car tires, truck tires, engineering tires, giant tires, various special tires and the like, and is particularly suitable for engineering tires and giant tires with lower speed and higher load.

While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.

Claims

1. A novel dual-purpose tire is characterized by comprising a tire tread [1], a belt ply [2], a mother tire body [3], a sub tire body [4], an inner support body [5], an inner bearing ring [6], a steel ring [7], a breathing hole [8] and the like which are sequentially arranged from outside to inside; wherein, the tread [1] is the part of the tire which is directly contacted with the ground; the belted layer [2] is used for improving the support and stress of the tire; the mother tyre body [3] comprises an outer framework part of the tyre and provides partial support; the sub-tire body [4] comprises internal framework components of the tire, and the strength and the toughness of the internal support body [5] are enhanced; the inner support body [5] provides the integral support of the tire; the steel ring [7] is arranged inside the inner pressure-bearing ring [6], so that the rigidity of the inner pressure-bearing ring is enhanced, and the stability of the joint of the inner pressure-bearing ring and the rim is ensured; the breathing hole (8) is positioned in the inner pressure-bearing ring and is a hole for the air inlet and outlet of the tire.

2. A new dual-purpose tyre as claimed in claim 1, characterized in that said tread (1) is provided with patterns of different shapes.

3. A novel dual-purpose tyre as claimed in claim 1, wherein said components are made of liquid polymer material, and the hardness (shore a) of each component is:

the rubber on the tread [1] is 55-95 degrees; the belt ply [2] glue, the mother tire body [3] glue, the inner support body [5] glue are 60-95 degrees, and the inner pressure-bearing ring glue is 70-95 degrees.

4. A new dual-purpose tyre as claimed in claim 1, characterized in that said belt layer [2] is arranged between the tread and the carcass by steel cords at different angles ranging from 0 ° to 180 °; when the angle of the steel wire is 0 degree, a single steel wire can be used for winding; the belt may also be wound in a single or multiple layer structure.

5. The new dual-purpose tire as claimed in claim 1, wherein said main tire body [3] and said sub tire body [4] are both a closed shape, and comprise a frame material and an elastomer rubber, wherein the frame material can be wound around the inner core at any angle.

6. A new dual-purpose tyre as claimed in claim 1, characterized in that said inner supporting body [5] is a circumferential supporting component inside the tyre, connecting the tread and the inner bearing ring, the number and shape of different types of tyre being different.

7. The novel dual-purpose tire as claimed in claim 1, wherein the inner pressure ring (6) closes the whole tire into an approximately O-shaped structure, and the tire is attached to a rim after being mounted on the hub, and a breathing hole (8) is reserved.

8. The novel dual-purpose tire as claimed in claim 1, wherein the steel rim (7) is arranged inside the inner pressure-bearing ring, and the number of the steel rim used is determined according to the tire load condition.

9. The new dual purpose tire of claim 1, made by the following method:

winding a sub-carcass cord around each inner core; winding a mother carcass cord around the integral inner core; fixing the inner core on the outer mold part of the inner pressure-bearing ring, casting the tire body and the support body, opening the mold after molding, and then casting the inner pressure-bearing ring; and winding the belt layers with different angles on the tire body after the tire body is molded by casting, and casting the tire tread after the pattern block mold is closed, so that the whole tire is molded.

10. The new dual use tire as set forth in claim 9, further comprising, after the step of integrally forming:

after all pouring is finished, adjusting to a specified temperature; and (4) detaching the whole die and the product from the equipment, and placing the die and the product into a constant temperature chamber for curing.

Opening the mold after the product is cured, taking out the product, putting the product into a thermostatic chamber for post-vulcanization, removing the inner core as required after the post-vulcanization is finished, and removing to obtain the whole product; for high load tires, an inner core of a particular material may be left inside the tire as desired.