Radial tire with belted layer structure and high durability

Abstract

The utility model relates to a radial tire with a belted layer structure and high durability, which comprises a tire body, a tread base part and a cord fabric layer, the cord fabric layer is positioned between the tire body and the tread base part, a belted layer is arranged between the cord fabric layer and the tread base part and comprises a first belted layer, a second belted layer and a third belted layer, and the first belted layer, the second belted layer and the third belted layer are arranged on the tire body. A first empty groove is formed in the inner side of the tread base part in the circumferential direction, a first rubber sheet making close contact with the surface of the third belted layer is arranged in the first empty groove formed in the tread base part, and through the crossed design of the first belted layer, the second belted layer and the third belted layer and the first empty groove formed in the tread base part, the first rubber sheet makes close contact with the surface of the third belted layer. And the first rubber sheet which is in close contact with the surface of the third belted layer is arranged in the first empty groove, so that the stability among the belted layers is ensured, the durability of the belted layers can be effectively improved, the mirror image wear of the tread is more uniform, and the wear performance is improved.

Description

Technical Field

[0001] This utility model relates to the field of radial tire technology, specifically to a belt-layered radial tire with high durability. Background Technology

[0002] Radial tires are a specific type of tire structure. Their most notable feature is that the tire carcass cords are arranged in a radial direction. They have a buffer layer with cords arranged circumferentially or nearly circumferentially tightly wrapped around the tire carcass. The arrangement of the tire carcass cords in radial tires makes them different from traditional bias-ply tires in terms of performance and structure, resulting in higher load-bearing capacity, better handling, and longer service life.

[0003] Radial tires have carcass cords arranged in a radial direction. This structure allows the tire to better distribute stress when under pressure, thereby improving its load-bearing capacity and durability. In addition, the bead portion of radial tires is usually made of steel cord, which increases the tire's stability and safety. However, with the increasing demand for higher vehicle speeds and lower chassis, tires installed on vehicles are becoming increasingly flat. The lower the tire's aspect ratio, the greater the radial expansion after inflation, which increases stress concentration at the ends of the belt layer. This can easily lead to premature separation of the tire belt ends, affecting service durability. Therefore, it is necessary to design a radial tire with a belt layer structure that has high durability to solve the aforementioned problems. Utility Model Content

[0004] Based on the above description, this utility model provides a radial tire with a belt layer structure that has high durability, in order to solve the problem of early separation of the belt end that is prone to occur during the use of traditional radial tires.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A radial tire with a belt layer structure and high durability includes a tire carcass, a tread base and a ply layer. The ply layer is located between the tire carcass and the tread base. A belt layer is provided between the ply layer and the tread base. The belt layer includes a first belt layer, a second belt layer and a third belt layer. A groove is opened on the inner side of the tread base along the circumferential direction. A rubber sheet that is in close contact with the surface of the third belt layer is provided in the groove opened on the tread base.

[0006] Based on the above technical solution, the present invention can be further improved as follows.

[0007] Furthermore, the first belt layer, the second belt layer, and the third belt layer are stacked from the inside out between the tire carcass and the tread base.

[0008] Furthermore, a crown layer is provided between the tread base and the belt layer.

[0009] Furthermore, a second groove is provided on the inner side of the tread base and near the crown layer, and a second rubber sheet is provided in the second groove of the tread base that is in close contact with the surface of the crown layer.

[0010] Furthermore, both rubber sheet one and rubber sheet two are arc-shaped, with the protruding surface of rubber sheet one being tangent to the outer surface of the third belt layer, and rubber sheet two being tangent to the outer surface of the crown belt layer.

[0011] Furthermore, both rubber sheet one and rubber sheet two are made of styrene-butadiene rubber.

[0012] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0013] 1. By using the cross design between the first belt layer, the second belt layer and the third belt layer, and opening a groove in the base of the tread, and placing a rubber sheet in the groove that is in close contact with the surface of the third belt layer, the stability between each belt layer is ensured, which can effectively improve the durability of the belt layer and make the mirror wear of the tread more uniform, thus improving the wear performance.

[0014] 2. By setting a crown layer on the belt layer and using the crown layer to wrap the belt layer, the ends of the belt layer can be better protected, thereby preventing the high temperature generated by mutual friction between the belt steel wires, further improving the stability between the multiple belt layers and the durability of the tire.

[0015] 3. By opening a second groove on the base of the tread and placing a second rubber sheet inside the second groove, the second rubber sheet can be effectively used to further restrict the crown belt layer and ensure the restriction effect of the crown belt layer on the belt layer. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of the present utility model;

[0017] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0018] Figure 3 This utility model Figure 1 Enlarged structural diagram at point B.

[0019] The attached diagram lists the components represented by each number as follows:

[0020] 1. Tire body; 2. Tread base; 21. Groove 1; 22. Groove 2; 3. Cord layer; 4. Belt layer; 41. First belt layer; 42. Second belt layer; 43. Third belt layer; 5. Rubber sheet 1; 6. Crown belt layer; 7. Rubber sheet 2. Detailed Implementation

[0021] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0023] Example

[0024] Please refer to Figures 1-3 This embodiment provides a radial tire with a belt layer structure and high durability, including a tire carcass 1, a tread base 2, and a ply 3. The ply 3 is located between the tire carcass 1 and the tread base 2. A belt layer 4 is provided between the ply 3 and the tread base 2. The belt layer 4 includes a first belt layer 41, a second belt layer 42, and a third belt layer 43. The first belt layer 41, the second belt layer 42, and the third belt layer 43 are stacked from the inside out between the tire carcass 1 and the tread base 2. The cord directions of the first belt layer 41 and the second belt layer 42 are the same. The tilt angle of the first belt layer 41 is 52°, the tilt angle of the second belt layer 42 is 18°, and the third belt layer... The cord direction of the third belt layer 43 is opposite to that of the first belt layer 41 and the second belt layer 42. The inclination angle of the third belt layer 43 is the same as that of the second belt layer 42. The width ratio of the first belt layer 41 to the tread base 2 is 0.85:1, the width ratio of the second belt layer 42 to the tread base 2 is 0.7:1, and the width ratio of the third belt layer 43 to the tread base 2 is 0.9:1. A groove 21 is provided on the inner side of the tread base 2 along the circumferential direction. A rubber sheet 5 that is in close contact with the surface of the third belt layer 43 is provided in the groove 21 of the tread base 2. The rubber sheet 5 is in a compressed deformation state. A nylon crown belt layer 6 is provided between the tread base 2 and the belt layer 4.

[0025] In this embodiment, the design of the tilt direction and tilt angle of the first belt layer 41, the second belt layer 42 and the third belt layer 43, as well as the different proportions of the first belt layer 41, the second belt layer 42 and the third belt layer 43 to the width of the tread base 2, improves the durability of the belt layer, while making the mirror wear of the tread more uniform and improving the wear performance.

[0026] As an optional implementation, a groove 22 is provided on the inner side of the tread base 2 and near the crown layer 6. A rubber sheet 7 is provided in the groove 22 of the tread base 2, which is in close contact with the surface of the crown layer 6. The rubber sheet 7 is in a compressed and deformed state.

[0027] In this embodiment, the second rubber sheet 7 is used to further restrict the crown band layer 6, ensuring the restriction effect of the crown band layer 6 on the belt layer 4, thus making it more practical.

[0028] As an optional implementation, both rubber sheet 5 and rubber sheet 7 are arc-shaped. The protruding surface of rubber sheet 5 is tangent to the outer surface of the third belt layer 43, and rubber sheet 7 is tangent to the outer surface of the crown layer 6. Both rubber sheet 5 and rubber sheet 7 are made of styrene-butadiene rubber.

[0029] In this embodiment, by designing the positional structure between rubber sheet 5, rubber sheet 7, the third belt layer 43 and the coronal belt layer 6, the pressure applied by rubber sheet 5 and rubber sheet 7 to the third belt layer 43 and the coronal belt layer 6 can be made more ideal, ensuring that the rebound force of rubber sheet 5 and rubber sheet 7 is fully applied to the third belt layer 43 and the coronal belt layer 6.

[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A radial tire with a belt-ply structure and high durability, comprising a carcass (1), a tread base (2), and a ply (3), wherein the ply (3) is located between the carcass (1) and the tread base (2), characterized in that, A belt layer (4) is provided between the ply layer (3) and the tread base (2). The belt layer (4) includes a first belt layer (41), a second belt layer (42) and a third belt layer (43). A groove (21) is provided on the inner side of the tread base (2) along the circumferential direction. A rubber sheet (5) that is in close contact with the surface of the third belt layer (43) is provided in the groove (21) of the tread base (2).

2. The radial tire with a belt-ply structure and high durability according to claim 1, characterized in that, The first belt layer (41), the second belt layer (42) and the third belt layer (43) are stacked from the inside out between the tire body (1) and the tread base (2).

3. A radial tire with a belt-ply structure and high durability according to claim 1, characterized in that, A crown layer (6) is provided between the tread base (2) and the belt layer (4).

4. A radial tire with a belt-ply structure and high durability according to claim 1, characterized in that, A groove 2 (22) is provided on the inner side of the tread base (2) and near the crown layer (6). A rubber sheet 2 (7) that is in close contact with the surface of the crown layer (6) is provided in the groove 2 (22) of the tread base (2).

5. A radial tire with a belt-ply structure and high durability according to claim 1, characterized in that, Both the first rubber sheet (5) and the second rubber sheet (7) are arc-shaped. The protruding surface of the first rubber sheet (5) is tangent to the outer surface of the third belt layer (43), and the second rubber sheet (7) is tangent to the outer surface of the crown belt layer (6).

6. A radial tire with a belt-ply structure and high durability according to claim 1, characterized in that, Both rubber sheet one (5) and rubber sheet two (7) are made of styrene-butadiene rubber.

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