All-steel radial tire bead structure

Abstract

The utility model relates to the technical field of tire bead structure, concretely is a kind of all-steel radial tire bead structure, including the steel wire ring a for resisting pressure, the outside of steel wire ring a is provided with the steel wire ring b for resisting pressure, the outside of steel wire ring a and steel wire ring b is all wrapped with the high thermal expansion composite rubber sleeve for preventing displacement, the outside of high thermal expansion composite rubber sleeve is connected with the bead wire cover cloth for wear resistance, the outside of bead wire cover cloth is provided with the hard triangular rubber strip for limiting. The utility model is closely arranged together by high thermal expansion composite rubber sleeve steel wire ring a and steel wire ring b, prevent steel wire ring a and steel wire ring b displacement from opening when pressure is larger, improve support strength, by the transition hard glue of different hardness, filler glue and soft rubber core fill internal space, the stress transition between adjacent materials is balanced, prevent stress concentration, improve the load capacity and service life of tire, reduce bead heat generation simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of tire bead structure technology, specifically to an all-steel radial tire bead structure. Background Technology

[0002] All-steel radial tires are defined as tires in which the carcass cords are arranged in a radial direction (at 90° or close to 90° to the center line of the tire crown), and the carcass is tightened by belt layers with cords arranged almost circumferentially.

[0003] Most existing all-steel radial tires use hexagonal steel wire rings for their bead structure. Stress is concentrated at the contact point between the end of the steel wire ring and the tire carcass. When the tire is subjected to a large load during use, the steel wire at the end of the steel wire ring comes into direct contact with the steel wire of the tire carcass, causing friction and resulting in tire carcass damage. This leads to a decrease in tire carcass strength and a weaker load-bearing capacity. Utility Model Content

[0004] The purpose of this invention is to provide an all-steel radial tire bead structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a bead structure for an all-steel radial tire, comprising a steel wire ring a for pressure resistance, a steel wire ring b for pressure resistance on the outer side of the steel wire ring a, both the outer sides of the steel wire ring a and the steel wire ring b being wrapped with a high thermal expansion composite rubber sleeve for preventing displacement, a wear-resistant bead steel wire covering cloth being connected to the outer side of the high thermal expansion composite rubber sleeve, and a rigid triangular rubber strip for limiting positioning being provided on the outer side of the bead steel wire covering cloth.

[0006] Preferably, the outer side of the hard triangular rubber strip is connected to a tire carcass for separation.

[0007] Preferably, the outer side of the tire body is abutted by a wear-resistant fiber cord.

[0008] Preferably, the outer side of the fiber curtain is connected with abrasion-resistant adhesive for protection.

[0009] Preferably, the inner wall of the wear-resistant rubber is connected to a protective sidewall rubber and an inner liner.

[0010] Preferably, the inner walls of the wear-resistant rubber and the sidewall soft rubber are connected with a transitional hard rubber for filling.

[0011] Preferably, one side of the transition hard adhesive is connected to a filler adhesive for filling.

[0012] Preferably, a soft rubber core for filling is connected to one side of the filler adhesive.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. The steel wire rings a and b are tightly arranged together by a high thermal expansion composite rubber sleeve to prevent them from shifting and spreading out under high pressure, thereby improving the support strength;

[0015] 2. By filling the internal space with transitional hard rubber, filler rubber and soft rubber core of different hardness, the stress transition between adjacent materials is balanced, stress concentration is prevented, the load-bearing capacity and service life of the tire are improved, and the heat generation of the tire bead is reduced. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the three-dimensional cross-sectional structure of the wear-resistant adhesive described in this utility model;

[0017] Figure 2 This is a schematic diagram of the main cross-sectional structure of the wire ring b described in this utility model;

[0018] Figure 3 This is a three-dimensional structural diagram of the high thermal expansion composite rubber sleeve described in this utility model;

[0019] Figure 4 This is a schematic diagram of the three-dimensional cross-sectional structure of the neutron aperture steel wire-wrapped cloth of this utility model.

[0020] In the diagram: 1. Steel wire bead a; 2. Steel wire bead b; 3. High thermal expansion composite rubber sleeve; 4. Bead steel wire wrapping cloth; 5. Hard triangular rubber strip; 6. Tire carcass; 7. Fiber cord fabric; 8. Abrasion-resistant rubber; 9. Sidewall soft rubber; 10. Inner liner; 11. Transition hard rubber; 12. Filler rubber; 13. Soft rubber core. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the embodiments described are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-4 The present invention proposes an all-steel radial tire bead structure, including a steel wire ring a1 for pressure resistance, a steel wire ring b2 for pressure resistance on the outside of the steel wire ring a1, both steel wire rings a1 and b2 are wrapped with a high thermal expansion composite rubber sleeve 3 for anti-displacement, the outside of the high thermal expansion composite rubber sleeve 3 is connected with a wear-resistant bead steel wire wrapping cloth 4, and the outside of the bead steel wire wrapping cloth 4 is provided with a hard triangular rubber strip 5 for limiting position.

[0023] In this utility model, the high thermal expansion composite rubber sleeve 3 is made of high thermal expansion composite rubber strip wrapped around the outside of steel wire ring a1 and steel wire ring b2. It has strong bonding force with rubber, high temperature resistance, and can ensure that it still has high thermal expansion at high operating temperature. It ensures that the steel wires of steel wire ring a1 and steel wire ring b2 are tightly arranged, and suppresses radial displacement of steel wire ring a1 and steel wire ring b2 during vehicle operation. The steel wire wrapping cloth 4 is wrapped around the outside of steel wire ring a1 and steel wire ring b2 in a figure-eight shape to prevent steel wire ring a1 and steel wire ring b2 from wearing the hard triangular rubber strip 5.

[0024] exist Figure 1 and Figure 2 In the middle, the outer side of the hard triangular rubber strip 5 is connected to the tire body 6, the outer side of the tire body 6 is abutted by the wear-resistant fiber cord 7, the outer side of the fiber cord 7 is connected to the wear-resistant rubber 8, and the inner wall of the wear-resistant rubber 8 is connected to the sidewall soft rubber 9 and the inner liner 10. The wear-resistant rubber 8, the sidewall soft rubber 9 and the inner liner 10 are used for protection.

[0025] In this invention, the wear-resistant rubber 8, the sidewall soft rubber 9, and the inner liner 10 protect the internal components from external corrosion.

[0026] exist Figure 1 and Figure 2 In the middle, the inner wall of the wear-resistant rubber 8 and the sidewall soft rubber 9 is connected to the transition hard rubber 11, one side of the transition hard rubber 11 is connected to the filler rubber 12, and one side of the filler rubber 12 is connected to the soft rubber core 13. The transition hard rubber 11, the filler rubber 12 and the soft rubber core 13 are used for filling.

[0027] In this invention, the transition hard rubber 11, filler rubber 12, and soft rubber core 13 fill the internal space, and are supported by rubber materials of different hardnesses. The rubber hardness of the transition hard rubber 11 is 80 Shore A, the rubber hardness of the filler rubber 12 is 75 Shore A, and the rubber hardness of the soft rubber core 13 is 70 Shore A. This balances the stress-strain transition between adjacent materials, making the material properties more rationally matched, preventing stress concentration, reducing heat generation in the tire bead, and improving the tire's load-bearing capacity and service life.

[0028] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0029] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A bead structure for an all-steel radial tire, characterized in that: It includes a steel wire ring a (1) for pressure resistance, and a steel wire ring b (2) for pressure resistance is provided on the outside of the steel wire ring a (1). Both the steel wire ring a (1) and the steel wire ring b (2) are wrapped with a high thermal expansion composite rubber sleeve (3) for preventing displacement. The outside of the high thermal expansion composite rubber sleeve (3) is connected with a wear-resistant steel wire wrapping cloth (4). The outside of the steel wire wrapping cloth (4) is provided with a hard triangular rubber strip (5) for limiting position.

2. The all-steel radial tire bead structure according to claim 1, characterized in that: The outer side of the hard triangular rubber strip (5) is connected to the tire body (6) for separation.

3. The all-steel radial tire bead structure according to claim 2, characterized in that: The outer side of the tire body (6) is abutted by a fiber cord (7) for wear resistance.

4. The all-steel radial tire bead structure according to claim 3, characterized in that: The outer side of the fiber curtain (7) is connected with abrasion-resistant adhesive (8) for protection.

5. The all-steel radial tire bead structure according to claim 4, characterized in that: The inner wall of the wear-resistant rubber (8) is connected to the sidewall soft rubber (9) and the inner liner (10) for protection.

6. The all-steel radial tire bead structure according to claim 5, characterized in that: The inner walls of the wear-resistant rubber (8) and the sidewall soft rubber (9) are connected with transition hard rubber (11) for filling.

7. The all-steel radial tire bead structure according to claim 6, characterized in that: One side of the transition hard adhesive (11) is connected to a filler adhesive (12) for filling.

8. The all-steel radial tire bead structure according to claim 7, characterized in that: One side of the filler adhesive (12) is connected to a soft rubber core (13) for filling.

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