Inflatable polyurethane tire with high-strength composite structure

Abstract

The utility model discloses an inflatable polyurethane tire with a high-strength composite structure, which relates to the technical field of polyurethane tires and comprises a tire body, the tire body is divided into a tire tread part and a tire sidewall part, the tire sidewall part of the tire body is provided with support teeth which are uniformly distributed at intervals, the inner wall of the tire body is provided with a heat dissipation layer, and the heat dissipation layer is arranged on the tire tread part. The two sides of the heat dissipation layer penetrate through gaps of the supporting teeth to form heat dissipation teeth, the reinforcing layer is arranged between the heat dissipation layer and the tread part of the tire body, the tire body, the heat dissipation layer and the reinforcing layer are connected into a whole through the vulcanization technology, function division is achieved through a composite layered structure, the wear resistance of polyurethane materials is reserved, and the service life of the tire is prolonged. The heat-sensitive defect of the material is overcome through the synergistic effect of the heat dissipation layer and the reinforcing layer, a heat dissipation channel surrounding the tire in the circumferential direction is formed by the heat dissipation layer extending structure in the tire side area, and when the tire runs to generate heat, the heat is rapidly conducted to the outer side of the tire through the heat dissipation tooth part of the heat dissipation layer; and active heat dissipation is realized by matching with airflow generated by tire rotation.

Description

TECHNICAL FIELD

[0001] The utility model relates to polyurethane tire technical field especially relates to a kind of inflatable polyurethane tires with high-strength composite structure. BACKGROUND

[0002] Polyurethane is one of the most wear-resistant elastomers, and it is widely used in tire manufacturing due to its good wear resistance.

[0003] However, the tires made of polyurethane material are affected in high temperature environment. For example, the polyurethane material will become soft in high temperature environment, which reduces the wear resistance, cutting resistance and impact resistance of the tire. Moreover, the polyurethane material has poor heat dissipation capacity, and the temperature accumulated in the tire and inside the tire cannot be quickly discharged when the tire is used in normal environment or high temperature environment, which causes a vicious cycle when the tire is used in high temperature environment and shortens the service life of the tire. SUMMARY

[0004] To solve the problem that the temperature cannot be quickly discharged when the tire is used, causing the tire to soften, the utility model provides an inflatable polyurethane tire with high-strength composite structure.

[0005] The technical solution of the utility model is as follows: an inflatable polyurethane tire with high-strength composite structure, comprising a carcass, the carcass is divided into a tread portion and a sidewall portion, the sidewall portion of the carcass is provided with uniformly spaced support teeth, the inner wall of the carcass is provided with a heat dissipation layer, the heat dissipation layer forms heat dissipation teeth through the gaps between the support teeth on both sides, a reinforcing layer is arranged between the heat dissipation layer and the tread portion of the carcass, and the carcass, the heat dissipation layer and the reinforcing layer are connected as a whole by vulcanization process.

[0006] Further, the heat dissipation layer is made of styrene-butadiene rubber material, the heat dissipation layer made of styrene-butadiene rubber material is vulcanized and combined with the polyurethane carcass, which ensures the flexibility of the whole tire and ensures that the overall structure has excellent heat conduction performance.

[0007] Further, the heat dissipation layer is in the form of a downwardly open groove structure, the heat dissipation teeth are arranged on both sides of the heat dissipation layer and staggered with the support teeth, the inner sides of the heat dissipation teeth are connected to each other, the staggered distribution of the two materials ensures that the strength of the tire is not greatly affected, and the material of the sufficient heat dissipation layer is exposed to the air for effective heat dissipation, and the heat dissipation teeth are connected to each other to maintain the integrity of the heat dissipation layer.

[0008] Further, the heat dissipation teeth are in the form of a rectangle with a small upper part and a large lower part, and the side wall of the tooth-shaped part is provided with staggered irregular tooth-shaped lines to ensure the bonding strength when the heat dissipation teeth are vulcanized and combined with the carcass.

[0009] Further, the reinforcing layer is made of thermoplastic polyurethane, which can form better combination with the carcass, and the reinforcing layer made of thermoplastic polyurethane can maintain material rigidity when the temperature rises, preventing strength attenuation caused by carcass softening.

[0010] Further, the rough plane of the reinforcing layer in contact with the heat dissipation layer and the regular toothed plane of the reinforcing layer in contact with the carcass can increase the contact area of the reinforcing layer and the heat dissipation layer, and better connection effect is obtained in the vulcanization combination process, the mechanical interlocking structure is formed between the toothed plane of the reinforcing layer and the carcass, and the steel wire belt layer in the carcass is embedded in the toothed gap in the vulcanization process, so that physical interlocking is realized.

[0011] Further, the heat dissipation teeth on both sides of the heat dissipation layer extend upward along the side wall of the heat dissipation layer to the inner wall top of the heat dissipation layer, and the uniformly spaced ribs are formed at the inner wall top of the heat dissipation layer, which smoothly transitions between the ribs and the heat dissipation layer, and the ribs can strengthen the support of the heat dissipation layer to the carcass.

[0012] Further, the area occupied by the side portion support teeth of the carcass is greater than the area of the heat dissipation teeth, so that the effective support of the carcass is not affected.

[0013] The beneficial effects of the utility model are as follows:

[0014] 1. The utility model discloses a composite layered structure to realize functional partition, which not only retains the wear-resistant properties of polyurethane material, but also overcomes the thermal sensitivity defects of the material through the synergistic effect of the heat dissipation layer and the reinforcing layer.

[0015] 2. The utility model discloses a partition design of the carcass, which provides vertical rigid support when the tread area bears the main ground pressure, and the heat dissipation layer extension structure of the sidewall area forms a heat dissipation channel around the tire circumference, so that when the tire generates heat during operation, the heat is quickly conducted to the outside of the tire through the heat dissipation teeth of the heat dissipation layer, and active heat dissipation is realized in cooperation with the air flow generated by the rotation of the tire. DRAWINGS

[0016] Fig. 1 It is a whole structure schematic view of the utility model;

[0017] Fig. 2 It is a front view of the utility model;

[0018] Fig. 3 It is a whole structure exploded schematic view of the utility model.

[0019] The drawings show that: 1, the carcass; 2, the heat dissipation layer; 3, the reinforcing layer; 4, the support tooth; 5, the heat dissipation tooth. DETAILED DESCRIPTION

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] like Figs. 1-3 As shown, a pneumatic polyurethane tire with a high-strength composite structure includes a tire body 1, which is divided into a tread portion and a sidewall portion. The sidewall portion of the tire body 1 is provided with evenly spaced support teeth 4. The inner wall of the tire body 1 is provided with a heat dissipation layer 2, which is made entirely of styrene-butadiene rubber. The heat dissipation layer 2 made of styrene-butadiene rubber is vulcanized and composited with the polyurethane tire body 1 to ensure the overall flexibility of the tire and to ensure that the overall structure has excellent thermal conductivity.

[0022] Heat dissipation layer 2 forms heat dissipation teeth 5 through the gaps in the support teeth 4 on both sides. The area occupied by the support teeth 4 on the sidewall of the tire body 1 is larger than the area of ​​the heat dissipation teeth 5, ensuring that the effective support of the tire body 1 is not affected. The heat dissipation layer 2 has a groove-shaped structure with the opening facing downward. The heat dissipation teeth 5 are set on both sides of the heat dissipation layer 2 and are staggered with the support teeth 4. The inner sides of the heat dissipation teeth 5 are connected to each other. The staggered distribution of the two materials ensures that the strength of the tire itself is not greatly affected, and ensures that enough material of the heat dissipation layer 2 is exposed to the air for effective heat dissipation. At the same time, the interconnected heat dissipation teeth 5 maintain the integrity of the heat dissipation layer 2. The heat dissipation teeth 5 are rectangular with a smaller top and a larger bottom. The sidewall of the toothed part is provided with staggered irregular toothed patterns to ensure the bonding strength of the heat dissipation teeth 5 when vulcanized with the tire body 1. The heat dissipation teeth 5 on both sides of the heat dissipation layer 2 extend upward along the sidewall of the heat dissipation layer 2 to the top of the inner wall of the heat dissipation layer 2, forming ribs with uniform intervals at the top of the inner wall of the heat dissipation layer 2. The ribs are smoothly transitioned between the heat dissipation layer 2 and the heat dissipation layer 2. The ribs can enhance the support of the heat dissipation layer 2 for the tire body 1.

[0023] A reinforcing layer 3 is provided between the heat dissipation layer 2 and the tread portion of the tire carcass 1. The tire carcass 1, the heat dissipation layer 2, and the reinforcing layer 3 are connected as a whole through a vulcanization process. The reinforcing layer 3 is made of thermoplastic polyurethane. Using this material can form a better bonding effect with the tire carcass 1. Furthermore, the use of thermoplastic polyurethane in the reinforcing layer 3 can maintain the rigidity of the material when the temperature rises, preventing the tire carcass 1 from softening and causing a decrease in strength. The side of the reinforcing layer 3 that contacts the heat dissipation layer 2 is a rough plane, while the side of the reinforcing layer 3 that contacts the tire carcass 1 is a regular toothed plane. When the tire carcass 1 and the reinforcing layer 3 are connected, the steel wire bundle layer in the tire carcass 1 fuses with the toothed plane of the reinforcing layer 3. The rough plane can increase the contact area between the reinforcing layer 3 and the heat dissipation layer 2, achieving a better connection effect during the vulcanization process. The toothed plane of the reinforcing layer 3 forms a mechanical interlocking structure with the tire carcass 1, and during the vulcanization process, the steel wire bundle layer in the tire carcass 1 is embedded in the toothed gaps, achieving physical interlocking.

[0024] The utility model discloses a working principle: tire in the operation process, tire body 1 is influenced by outside environment factor and working condition temperature rise, temperature transmission reaches the heat dissipation layer 2 and its both sides heat dissipation tooth 5, and the heat dissipation tooth 5 of heat dissipation layer 2 both sides passes through tire body 1 and is connected with outside environment, and the airflow that tire rotates and produces in the operation process can take along the heat in heat dissipation tooth 5, and the heat in tire continuously dissipates outward through the heat dissipation tooth 5 of heat dissipation layer 2, avoids the temperature of tire whole structure to keep in the higher position in the use process continuously,

[0025] Meanwhile tire temperature rises in the process tire body 1 softens, at this moment, when tire body 1 is extruded, deformation occurs, but in the deformation process, the rib plate formed by reinforcing layer 3 and heat dissipation tooth 5 can effectively support tire body 1, ensure that tire body 1 will not occur excessive deformation when softening to cause abrasion increase, ensure the normal use of tire whole.

[0026] The above, only for the preferable specific implementation mode of the utility model, but the protection scope of the utility model does not limit to this, any skilled person in the art in the technical range disclosed by the utility model, according to the technical scheme of the utility model and the utility model concept, carries out equivalent replacement or change, all should cover in the protection scope of the utility model.

Claims

1. Pneumatic polyurethane tire with high-strength composite structure, comprising a carcass (1), characterized in that: The tire body (1) is divided into a tread portion and a side portion. The side portion of the tire body (1) is provided with evenly spaced support teeth (4). The inner wall of the tire body (1) is provided with a heat dissipation layer (2). The heat dissipation layer (2) passes through the gap of the support teeth (4) on both sides to form heat dissipation teeth (5). A reinforcing layer (3) is provided between the heat dissipation layer (2) and the tread portion of the tire body (1). The tire body (1), the heat dissipation layer (2), and the reinforcing layer (3) are connected as a whole.

2. The pneumatic polyurethane tire with high strength composite structure according to claim 1, characterized in that: The heat dissipation layer (2) is made entirely of styrene-butadiene rubber.

3. The pneumatic polyurethane tire with high strength composite structure according to claim 1, characterized in that: The heat dissipation layer (2) has an overall groove structure with the opening facing downward. The heat dissipation teeth (5) are arranged on both sides of the heat dissipation layer (2) and are staggered with the support teeth (4). The inner sides of the heat dissipation teeth (5) are connected to each other.

4. The pneumatic polyurethane tire with high strength composite structure according to claim 3, characterized in that: The heat dissipation teeth (5) are rectangular with a smaller top and a larger bottom, and the sidewalls of the tooth-shaped part are provided with interlaced irregular tooth-shaped patterns.

5. The pneumatic polyurethane tire with high strength composite structure according to claim 1, characterized in that: The reinforcing layer (3) is made of thermoplastic polyurethane.

6. A pneumatic polyurethane tire with a high-strength composite structure according to claim 1, characterized in that: The side of the reinforcing layer (3) that contacts the heat dissipation layer (2) is a rough plane, and the side of the reinforcing layer (3) that contacts the tire body (1) is a regular toothed plane. When the tire body (1) is connected to the reinforcing layer (3), the steel wire bundle layer in the tire body (1) merges with the toothed plane of the reinforcing layer (3).

7. A pneumatic polyurethane tire with a high-strength composite structure according to claim 3, characterized in that: The heat dissipation teeth (5) on both sides of the heat dissipation layer (2) extend upward along the side wall of the heat dissipation layer (2) to the top of the inner wall of the heat dissipation layer (2), forming uniformly spaced ribs at the top of the inner wall of the heat dissipation layer (2), with a smooth transition between the ribs and the heat dissipation layer (2).

8. A pneumatic polyurethane tire with a high-strength composite structure according to claim 1, characterized in that: The area occupied by the supporting teeth (4) on the side of the tire body (1) is larger than the area occupied by the heat dissipation teeth (5).

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