A new type of run-flat tire structure design of agricultural tire

Abstract

The utility model discloses a novel agricultural tire of anti -explosion bead structure design relates to tire technical field, including tire body, the bead in tire body is equipped with by single steel wire winding generation's big inclined bottom hexagonal bead, big inclined bottom hexagonal bead outside is equipped with the layer of reinforced rubber sheet, the layer of reinforced rubber sheet outside is equipped with inner wrapping cloth, the upper side of inner wrapping cloth is equipped with triangular rubber core, steel wire wrapping cloth is equipped in triangular rubber core and inner wrapping cloth outside still, the utility model discloses a single steel wire winding's big inclined bottom hexagonal bead and the layer of reinforced rubber sheet, promote the strength of bead, increase the contact area with the rim, optimize stress distribution, enhance steel wire adhesion, reduce the heat of friction, thereby prevent the bead crack and steel wire to stick out, have excellent anti -bead twist effect simultaneously, can effectively improve the hoop pressure between bead and rim, avoid the slip between bead and rim.

Description

Technical Field

[0001] This utility model relates to the field of tire technology, specifically to an agricultural tire with a novel explosion-proof bead structure design. Background Technology

[0002] With the increasing automation of society, the demand for agricultural tires is also increasing, and the application fields of agricultural tires are becoming more diversified, with the market space continuously expanding. To adapt to various complex working conditions and meet higher load-bearing requirements, the tire bead bears enormous impact forces and torsional forces during steering under full load.

[0003] However, when traditional agricultural tires are subjected to high speeds and heavy loads, the bead area will repeatedly twist and deform, causing friction and heat between materials, aging of the rubber compound, and a decline in physical properties. This can easily lead to early and mid-stage bead cracks and delamination problems. In severe cases, the bead wires may puncture and burst, seriously affecting driving safety and increasing transportation costs.

[0004] Based on this, a novel explosion-proof bead structure design for agricultural tires is now provided, which can eliminate the drawbacks of existing devices. Utility Model Content

[0005] The purpose of this invention is to provide an agricultural tire with a novel explosion-proof bead structure design to solve the problems in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A novel explosion-proof tire bead structure design for agricultural tires includes a tire body. The tire body has a bead with a large hexagonal wire ring formed by winding a single steel wire inside. A reinforcing rubber layer is provided on the outside of the large hexagonal wire ring. An inner wrapping cloth is provided on the outside of the reinforcing rubber layer. A triangular rubber core is provided above the inner wrapping cloth. A steel wire wrapping cloth is also provided on the outside of the triangular rubber core and the inner wrapping cloth.

[0008] Based on the above technical solutions, this utility model also provides the following optional technical solutions:

[0009] In one alternative: the bottom of the large sloping hexagonal wire coil is provided with a 6° to 18° sloping angle.

[0010] In one alternative: the reinforcing film layer is a multi-layer composite structure, including a bottom layer, an intermediate layer, and a top layer.

[0011] In one alternative: the bottom layer is made of a mixture of natural rubber and nitrile rubber, and the thickness of the bottom layer is 1 to 2 mm.

[0012] In one alternative: the intermediate layer is made of a mixture of butadiene rubber and styrene-butadiene rubber, and the thickness of the intermediate layer is 2-3 mm.

[0013] In one alternative: the surface layer is made of a mixture of chloroprene rubber and nitrile rubber, and the thickness of the surface layer is 1 to 2 mm.

[0014] In one alternative: a stress diffusion layer is provided between the intermediate layer and the surface layer, wherein the stress diffusion layer uses thermoplastic polyurethane elastomer as the matrix material and adds nano-silica particles as the reinforcing phase, with a mass ratio of 9:1.

[0015] In one alternative: the stress diffusion layer has micropores inside, and the micropore diameter is 0.1 to 0.3 mm.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] This invention improves tire bead strength, increases the contact area with the rim, optimizes stress distribution, enhances wire adhesion, and reduces frictional heat generation by using a single wire-wound, large-sloping-bottom hexagonal wire ring and a reinforcing rubber layer. This prevents tire bead cracks and wire protrusion, while also providing excellent anti-torsion properties. It effectively increases the clamping force between the tire bead and the rim, preventing slippage between them. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the structure of the reinforcing film layer in this utility model.

[0020] Figure 3 This is a schematic diagram of the stress diffusion layer in this utility model.

[0021] Figure label annotations: 1. Hexagonal steel wire ring; 2. Reinforcing film layer; 201. Bottom layer; 202. Middle layer; 203. Top layer; 3. Inner wrapping fabric; 4. Triangular rubber core; 5. Steel wire wrapping fabric; 601. Micropores; 6. Stress diffusion layer. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0023] Example 1

[0024] In one embodiment, such as Figure 1As shown, an agricultural tire with a novel explosion-proof bead structure design includes a tire body. Inside the bead of the tire body, there is a large-sloping-bottom hexagonal steel wire ring 1 formed by winding a single steel wire. A reinforcing rubber layer 2 is provided on the outside of the large-sloping-bottom hexagonal steel wire ring 1. An inner wrapping cloth 3 is provided on the outside of the reinforcing rubber layer 2. A triangular rubber core 4 is provided above the inner wrapping cloth 3. A steel wire wrapping cloth 5 is also provided on the outside of the triangular rubber core 4 and the inner wrapping cloth 3. By setting the large-sloping-bottom hexagonal steel wire ring 1 and the reinforcing rubber layer 2 in the bead, the bead strength is improved and the effective contact area with the rim is increased.

[0025] In one embodiment, such as Figure 1 As shown, the bottom of the large-sloping-bottom hexagonal wire ring 1 is provided with a 6° to 18° angle, which increases the effective contact area between the large-sloping-bottom hexagonal wire ring 1 and the rim.

[0026] In one embodiment, such as Figure 2 As shown, the reinforcing film layer 2 is a multi-layer composite structure, including a bottom layer 201, an intermediate layer 202, and a top layer 203. The bottom layer 201 ensures a tight bond with the steel wire ring, preventing the steel wire from protruding and the rubber from separating. The intermediate layer 202 disperses stress and reduces excessive local stress. The top layer 203 enhances the friction and clamping force between the tire bead and the rim, preventing the tire bead from slipping on the rim.

[0027] In one embodiment, the bottom layer 201 is made of a mixture of natural rubber and nitrile rubber. The thickness of the bottom layer 201 is 1-2 mm. Natural rubber has good elasticity and wear resistance, and can provide a certain cushioning effect. Nitrile rubber has excellent adhesion and oil resistance, and can enhance the adhesion to the steel wire. The combination of the two can combine their advantages to form a bottom layer that is tightly bonded to the steel wire and wear-resistant.

[0028] In one embodiment, the intermediate layer 202 is made of a mixture of butadiene rubber and styrene-butadiene rubber. The thickness of the intermediate layer 202 is 2-3 mm. The high elasticity and low heat generation of butadiene rubber enable it to effectively disperse energy when subjected to stress, while styrene-butadiene rubber provides good wear resistance and aging resistance. The combination of the two can enable the intermediate layer to have a certain degree of durability while dispersing stress.

[0029] In one embodiment, the surface layer 203 is made of a mixture of chloroprene rubber and nitrile rubber, and the thickness of the surface layer 203 is 1-2 mm. Chloroprene rubber has good adhesion and weather resistance, while nitrile rubber enhances its wear resistance and oil resistance. The combination of the two can make the surface layer fit tightly with the rim, while also having good resistance to environmental aging and extending the service life of the tire bead.

[0030] The above embodiments disclose an agricultural tire with a novel anti-explosion bead structure design. By setting a large-sloping-bottom hexagonal steel wire ring 1 and a reinforcing rubber layer 2 in the bead, the strength of the bead is improved, the effective contact area with the rim is increased, the stress distribution in various parts of the bead is improved, the adhesion between the steel wires is enhanced, heat generation is reduced, and the generation of bead cracks and punctures is effectively prevented. At the same time, it has excellent anti-bead torsion effect, which can effectively improve the clamping force between the bead and the rim and avoid slippage between the bead and the rim.

[0031] Example 2

[0032] The difference from Example 1 is that, as Figure 3 As shown, a stress diffusion layer 6 is provided between the intermediate layer 202 and the surface layer 203. The stress diffusion layer 6 uses thermoplastic polyurethane elastomer as the matrix material and adds nano-silica particles as the reinforcing phase, with a mass ratio of 9:1. The stress diffusion layer 6 has micropores 601 inside, with a pore size of 0.1 to 0.3 mm. The stress diffusion layer 6 improves stress dispersion, so that the stress is evenly transmitted to the surrounding reinforcing film layer 2, avoiding local stress concentration. The stress is dispersed by the elastic deformation of the micropores 601, which can reduce stress concentration.

[0033] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A novel agricultural tire with a puncture-proof bead structure, comprising a tire body, characterized in that, The tire body has a large hexagonal wire ring (1) formed by winding a single steel wire inside the bead. The large hexagonal wire ring (1) has a reinforcing rubber layer (2) on the outside. The reinforcing rubber layer (2) has an inner wrapping cloth (3) on the outside. A triangular rubber core (4) is provided above the inner wrapping cloth (3). The triangular rubber core (4) and the inner wrapping cloth (3) are also provided with a steel wire wrapping cloth (5) on the outside.

2. The agricultural tire with a novel explosion-proof bead structure design according to claim 1, characterized in that, The bottom of the large sloping hexagonal wire coil (1) is provided with a 6° to 18° sloping angle.

3. The agricultural tire with a novel explosion-proof bead structure design according to claim 1, characterized in that, The reinforcing film layer (2) is a multi-layer composite structure, including a bottom layer (201), an intermediate layer (202) and a top layer (203).

4. The agricultural tire with a novel explosion-proof bead structure design according to claim 3, characterized in that, The bottom layer (201) is made of a mixture of natural rubber and nitrile rubber, and the thickness of the bottom layer (201) is 1-2 mm.

5. The agricultural tire with a novel explosion-proof bead structure design according to claim 3, characterized in that, The intermediate layer (202) is made of a mixture of butadiene rubber and styrene-butadiene rubber, and the thickness of the intermediate layer (202) is 2-3 mm.

6. The agricultural tire with a novel explosion-proof bead structure design according to claim 3, characterized in that, The surface layer (203) is made of a mixture of chloroprene rubber and nitrile rubber, and the thickness of the surface layer (203) is 1-2 mm.

7. The agricultural tire with a novel explosion-proof bead structure design according to claim 3, characterized in that, A stress diffusion layer (6) is provided between the intermediate layer (202) and the surface layer (203). The stress diffusion layer (6) uses thermoplastic polyurethane elastomer as the matrix material and adds nano-silica particles as the reinforcing phase, with a mass ratio of 9:

1.

8. The agricultural tire with a novel explosion-proof bead structure design according to claim 7, characterized in that, The stress diffusion layer (6) has micropores (601) inside, and the pore diameter of the micropores (601) is 0.1 to 0.3 mm.

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