A load-resistant all-steel radial tire

Abstract

The utility model relates to a load-resistant all-steel radial tire, an airtight layer, a bead, a sidewall and a tread, wherein the bead comprises a carcass cord layer and four groups of wire bead structures, wherein the carcass cord layer is folded outward on both sides to form a filling interval, and the four groups of wire bead structures are equally distributed in two groups of filling intervals, and a apex rubber is arranged between the outer sides of the two groups of wire bead structures on the same side. The load-resistant all-steel radial tire is designed with two groups of wire bead structures that are not in contact with each other in the filling interval, and a double wire bead structure is formed in any filling interval, so as to reduce the deformation of the tire mouth, enhance the strength at the tire mouth, improve the load-bearing performance of the tire, and wrap the end points of the carcass cord layer with a wire wrap, so as to enhance the strength of the tire mouth, enhance the load-bearing capacity of the tire, and prevent the tire mouth from cracking.

Description

Technical Field

[0001] The utility model relates to the technical field of radial tires, in particular to a load-resistant all-steel radial tire. Background Art

[0002] A tire is a circular elastic rubber product that rolls on the ground and is installed on various vehicles or machinery. It is usually installed on a metal rim and can support the vehicle body, cushion external impacts, achieve contact with the road surface and ensure the vehicle's drivability. A radial tire is a type of tire classification. Its carcass cord layers are arranged in the meridian direction, and a new type of tire is tightly clamped on the carcass by a buffer layer that is arranged circumferentially or nearly circumferentially.

[0003] As a kind of vacuum tire, all-steel radial tire will be used on trucks. When the all-steel radial tire is used for a long time at high speed, the stress on its spigot is great. When the truck is loaded with goods, the goods are often overweight. Therefore, safety accidents caused by cracking of the spigot of the all-steel radial tire often occur. It can be seen that the existing all-steel radial tire has insufficient spigot deformation bearing capacity performance. Therefore, a load-resistant all-steel radial tire is proposed. Utility Model Content

[0004] Based on the above description, the utility model provides a load-resistant all-steel radial tire, which solves the technical problem that the existing all-steel radial tire is prone to cracking at the tip.

[0005] The utility model solves the above-mentioned technical problems with the following technical solutions: a load-resistant all-steel radial tire, an airtight layer, a bead, a sidewall and a tread, wherein the bead includes a carcass cord layer and four groups of wire bead structures, wherein the carcass cord layer is folded outward on both sides to form a filling interval, the four groups of wire bead structures are equally distributed in two groups of filling intervals, and a apex rubber is arranged between the outer sides of the two groups of wire bead structures on the same side.

[0006] On the basis of the above technical solution, the present invention can also be improved as follows.

[0007] Furthermore, it also includes a wire cloth, which is located between the carcass cord layer and the airtight layer and outside the outward folded part of the carcass cord layer. One side of the wire cloth wraps the end point of the carcass cord layer inward.

[0008] Furthermore, the wire ring structure includes an inner ring steel wire, an outer ring steel wire, an inner steel wire isolation rubber and an outer steel wire isolation rubber, wherein the inner steel wire isolation rubber wraps a plurality of inner ring steel wires, and the outer steel wire isolation rubber is located on the outside of the inner steel wire isolation rubber and wraps a plurality of outer steel wire isolation rubbers.

[0009] Furthermore, the cross-sectional shape of the inner ring steel wire and the outer ring steel wire is one of square, circular and hexagonal.

[0010] Furthermore, a belt structure is provided between the carcass cord layer and the tread.

[0011] Furthermore, the belt layer structure includes a first belt layer, a second belt layer and a zero-degree belt layer, wherein the first belt layer is arranged on the carcass cord layer, the zero-degree belt layer is arranged at the bottom of the tread, and the second belt layer is arranged between the first belt layer and the zero-degree belt layer.

[0012] Furthermore, a rubber pad is provided on the shoulder of the carcass cord layer, and the first belt layer is attached to the rubber pad.

[0013] Furthermore, the carcass cord layer is arranged on the airtight layer, and is one of terylene cords or polyester fiber cords.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0015] The load-resistant all-steel radial tire is designed with two sets of steel bead structures that are not in contact with each other in the filling interval, and a double steel bead structure is formed in any filling interval, so as to reduce the deformation of the tire bead, enhance the strength at the tire bead, improve the load-bearing performance of the tire, and wrap the end points of the carcass cord layer with steel wire wrapping cloth, thereby enhancing the strength of the tire bead, enhancing the load-bearing capacity of the tire, and preventing the tire bead from cracking. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic structural diagram of a load-resistant all-steel radial tire provided in an embodiment of the utility model;

[0017] Figure 2 for Figure 1 A partial enlarged schematic diagram of the middle A area;

[0018] Figure 3 It is a front view structural schematic diagram of an embodiment of the utility model;

[0019] Figure 4 It is a schematic diagram of the structure of the carcass cord layer in an embodiment of the utility model.

[0020] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0021] 1. Airtight layer; 2. Bead; 21. Carcass cord layer; 22. Wire bead structure; 221. Inner ring steel wire; 222. Outer ring steel wire; 223. Inner steel wire isolation rubber; 224. Outer steel wire isolation rubber; 23. Filling area; 24. Triangle rubber; 25. Steel wire wrap; 3. Sidewall; 4. Rubber pad; 5. Tread; 6. Belt layer structure; 61. First belt layer; 62. Second belt layer; 63. Zero-degree belt layer. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0023] like Figure 1 As shown, a load-resistant all-steel radial tire in this embodiment comprises an airtight layer 1, a tire bead 2, a sidewall 3 and a tread 5, wherein the sidewall 3 is arranged on the side of the load-resistant all-steel radial tire and is fixedly connected to the airtight layer 1 and the tread 5, and the tire bead 2 is arranged on the airtight layer 1.

[0024] As the focus of this application, Figure 2-4 As shown, the tire bead 2 in the load-resistant all-steel radial tire includes a carcass ply 21 and four groups of wire bead structures 22, wherein the carcass ply 21 is folded outward on both sides to form a filling interval 23, and the four groups of wire bead structures 22 are equally distributed in two groups of filling intervals 23. There is a spacing between the two groups of wire bead structures 22 in any group of filling intervals 23, and they are not in contact with each other, and both can give the tire bead 2 the necessary strength and rigidity, reduce the deformation of the tire mouth, enhance the strength at the tire mouth, improve the load-bearing performance of the tire, and enable the tire to be firmly fixed to the rim. When the rim is tightened, it can avoid bead unseating and relative slippage. A apex 24 is arranged between the outer sides of the two groups of wire bead structures 22 on the same side, and a part of the apex 24 is fixedly connected to the airtight layer 1 and the sidewall 3, thereby playing a supporting and transitional role, and the apex 24 has good elasticity, so that the vibration and impact from the road surface can be alleviated, thereby improving the handling and comfort of the vehicle.

[0025] It should be noted that the carcass ply 21 is fixedly arranged on the airtight layer 1, and the carcass ply 21 is one of polyester cords or polyester fiber cords, preferably polyester fiber cords. Polyester fiber has the characteristics of high strength and high modulus, which can enhance the wear resistance and durability of the tire. In addition, a belt layer structure 6 is arranged between the carcass ply 21 and the tread 5. The belt layer structure 6 is used to buffer the stress and impact of the carcass and improve the load-bearing and durability of the tire. The belt layer structure 6 includes a first belt layer 61, a second belt layer 62, and a second belt layer 63. Layer 62 and zero-degree belt layer 63, wherein the first belt layer 61 is arranged on the carcass ply 21, the zero-degree belt layer 63 is arranged at the bottom of the tread 5, the second belt layer 62 is arranged between the first belt layer 61 and the zero-degree belt layer 63, and a rubber pad 4 is arranged on the shoulder of the carcass ply 21, and the first belt layer 61 is attached to the rubber pad 4, so that the rubber pad 4 can absorb the stress from the shoulder of the tread 5, thereby preventing the belt layer structure 6 from delamination, ensuring the safety of the tire and improving the service life of the tire.

[0026] Further explanation, such as Figure 2 As shown, the wire ring structure 22 includes an inner ring steel wire 221, an outer ring steel wire 222, an inner steel wire isolation rubber 223 and an outer steel wire isolation rubber 224, wherein the inner steel wire isolation rubber 223 wraps a plurality of inner ring steel wires 221, and the outer steel wire isolation rubber 224 is located on the outside of the inner steel wire isolation rubber 223 and wraps a plurality of outer steel wire isolation rubbers 224.

[0027] It should be noted that the cross-sectional shape of the inner ring steel wire 221 and the outer ring steel wire 222 is one of square, circular and hexagonal, and the present application prefers circular. The inner steel wire isolation rubber 223 and the outer steel wire isolation rubber 224 preferably use a composition with styrene-butadiene rubber as the main material and recycled rubber as the auxiliary material, which has the characteristics of high hardness and high bonding strength. In this way, the inner ring steel wire 221 and the outer ring steel wire 222 can avoid loosening during use, so that the steel wire ring structure 22 can bear the characteristics of giving the tire bead 2 the necessary strength and rigidity.

[0028] In order to further strengthen the tire mouth, the outer folded part of the carcass ply 21 is strengthened. Figure 2 and 3 As shown, the load-resistant all-steel radial tire also includes a wire cloth 25, which is located between the carcass cord layer 21 and the airtight layer 1, and is located on the outside of the outward folded part of the carcass cord layer 21. One side of the wire cloth 25 wraps the end point of the carcass cord layer 21 inwardly, thereby enhancing the tire bead strength and preventing the tire bead from cracking.

[0029] Working principle:

[0030] First, any group of filling intervals 23 has two groups of non-contacting steel wire ring structures 22, and both groups of steel wire ring structures 22 can give the tire bead 2 the necessary strength and rigidity, thereby reducing the deformation of the tire bead, enhancing the strength at the tire bead, and improving the load-bearing performance of the tire. Secondly, the end points of the carcass cord layer 21 are wrapped inwardly by the steel wire wrap 25, thereby enhancing the strength of the tire bead, enhancing the tire load-bearing capacity, and preventing the tire bead from cracking.

[0031] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A load-resistant all-steel radial tire, comprising an airtight layer (1), a bead (2), a sidewall (3) and a tread (5), characterized in that: The tire bead (2) comprises a carcass ply (21) and four groups of wire bead structures (22), wherein filling intervals (23) are formed by folding back outwards on both sides of the carcass ply (21), and the four groups of wire bead structures (22) are equally distributed in the two groups of filling intervals (23), and an apex rubber (24) is arranged between the outer sides of the two groups of wire bead structures (22) on the same side.

2. The load-resistant all-steel radial tire according to claim 1, characterized in that: The invention also comprises a wire-wrapped cloth (25), which is located between the carcass cord layer (21) and the airtight layer (1) and is located on the outside of the outwardly folded portion of the carcass cord layer (21), and one side of the wire-wrapped cloth (25) inwardly wraps the end point of the carcass cord layer (21).

3. The load-resistant all-steel radial tire according to claim 2, characterized in that: The wire ring structure (22) comprises an inner ring steel wire (221), an outer ring steel wire (222), an inner steel wire isolation rubber (223) and an outer steel wire isolation rubber (224), wherein the inner steel wire isolation rubber (223) wraps a plurality of inner ring steel wires (221), and the outer steel wire isolation rubber (224) is located outside the inner steel wire isolation rubber (223) and wraps a plurality of outer steel wire isolation rubbers (224).

4. The load-resistant all-steel radial tire according to claim 3, characterized in that: The cross-sectional shape of the inner ring steel wire (221) and the outer ring steel wire (222) is one of square, circular and hexagonal.

5. The load-resistant all-steel radial tire according to claim 1, characterized in that: A belt structure (6) is arranged between the carcass ply (21) and the tread (5).

6. The load-resistant all-steel radial tire according to claim 5, characterized in that: The belt layer structure (6) includes a first belt layer (61), a second belt layer (62) and a zero-degree belt layer (63), wherein the first belt layer (61) is arranged on the carcass cord layer (21), the zero-degree belt layer (63) is arranged at the bottom of the tread (5), and the second belt layer (62) is arranged between the first belt layer (61) and the zero-degree belt layer (63).

7. The load-resistant all-steel radial tire according to claim 6, characterized in that: A rubber pad (4) is provided on the shoulder of the carcass cord layer (21), and the first belt layer (61) is attached to the rubber pad (4).

8. The load-resistant all-steel radial tire according to claim 1, characterized in that: The carcass cord layer (21) is arranged on the airtight layer (1) and is one of terylene cords or polyester fiber cords.

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