All-steel radial truck tire

Abstract

The invention relates to the technical field of tires, in particular to an all-steel radial truck tire which comprises a triangular rubber core, a tire body cord fabric layer, an outer seam allowance reinforcing cord fabric layer, an inner seam allowance reinforcing cord fabric layer and an outer fiber cord fabric layer. The tire body cord fabric layer wraps the apex rubber core, and the upper end of the tire body cord fabric layer is wrapped with a first protective layer; the outer seam allowance reinforcing cord fabric layer is arranged on the surface of one side, far away from the apex core, of the part, located on the outer side of the tire bead structure, of the tire body cord fabric layer, and the end of the upper end is coated with a second protective layer; the inner seam allowance reinforcing cord fabric layer is arranged on the surface of one side, far away from the triangular rubber core, of the part, located on the inner side of the tire bead structure, of the tire body cord fabric layer, and the upper end is coated with a third protective layer; the outer fiber cord fabric layer is arranged on the side, away from the tire body cord fabric layer, of the outer seam allowance reinforcing cord fabric layer, and the upper end of the outer fiber cord fabric layer is higher than the outer seam allowance reinforcing cord fabric layer. According to the all-steel radial truck tire, endpoint protection can be achieved, tire body endpoint stress is effectively dispersed, and early damage to tire body endpoints is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of all-steel radial tires, in particular to an all-steel radial load-bearing tire. Background Art

[0002] See also Figure 1 The existing all-steel radial load-bearing tire includes: an existing sidewall 1 on the outside, an existing bead wear-resistant rubber 2 on the outside, an existing carcass cord layer 5, an existing bead wire cloth 3, an existing inner liner rubber 4, an existing lower triangle rubber 6, an existing upper triangle rubber 7, and an existing wire ring 8. At present, the all-steel market is highly competitive, and more pulling and running fast has become the current market development trend. In order to adapt to the market development needs, the bead structure of the existing all-steel radial load-bearing tire can no longer meet the market demand for load, and the tire is prone to quality problems such as bead emptying, bead cracking, and explosion. It is urgent to design the heavy-duty bead of the tire.

[0003] Therefore, the existing all-steel radial load-bearing tires cannot meet the market load-bearing demand and are prone to problems such as ring hollowing, ring cracking or explosion. Summary of the invention

[0004] The invention provides an all-steel radial load-bearing tire, which is used to solve the problems of ring emptying, ring cracking and explosion that are easy to occur in the existing all-steel radial load-bearing tires.

[0005] In one aspect, the present invention provides an all-steel radial load-carrying tire, comprising a bead structure; wherein the bead structure comprises:

[0006] Triangle rubber core;

[0007] The carcass ply is wrapped around the outside of the apex rubber core, and the upper end is covered with a first protective layer;

[0008] The outer bead reinforcement cord layer is arranged on the surface of the part of the carcass cord layer located at the outer side of the bead structure and away from the apex rubber core, and the upper end is covered with a second protective layer;

[0009] The inner bead reinforcement cord layer is arranged on the surface of the part of the carcass cord layer located on the inner side of the bead structure and away from the apex rubber core, and the upper end is covered with a third protective layer;

[0010] The outer fiber cord layer is arranged on a side of the outer bead reinforcing cord layer away from the carcass cord layer, and the upper end thereof is higher than the outer bead reinforcing cord layer.

[0011] In some of the embodiments, the upper end of the outer cuff reinforcement ply is higher than the carcass ply.

[0012] In some of these embodiments, the outer fiber ply comprises:

[0013] The first cord layer is attached to the surface of the outer reinforcing cord layer on the side away from the carcass cord layer;

[0014] The second cord layer is attached to the surface of the first cord layer on one side away from the outer cord reinforcement layer; wherein,

[0015] The upper end of the first ply is higher than that of the second ply.

[0016] In some embodiments, there is a first distance between the upper end of the first protective layer and the upper end of the carcass cord layer, and the first distance ranges from 10 mm to 20 mm;

[0017] And / or, there is a second distance between the upper end of the second protective layer and the upper end of the outer cord reinforcement layer, and the second distance ranges from 10 mm to 20 mm.

[0018] In some of the embodiments, there is a third distance between the upper end of the outer fiber cord layer and the upper end of the carcass cord layer, and the third distance ranges from 25 mm to 50 mm.

[0019] In some of the embodiments, the first protective layer is a nylon cord or a film; and / or, the second protective layer is a nylon cord or a film.

[0020] In some of the embodiments, a wire ring is provided inside the apex rubber core, and the apex rubber core includes a lower apex rubber and an upper apex rubber, the lower apex rubber is provided on the top of the wire ring, and the upper apex rubber is provided on the side of the lower apex rubber away from the wire ring; wherein the hardness of the wire ring is greater than the hardness of the lower apex rubber.

[0021] In some of the embodiments, the carcass cord layer is wrapped around the bottom of the steel wire ring from the inner side to the outside and turned up to form a carcass cord layer turned-up part; wherein the carcass cord layer turned-up part is in contact with the carcass cord layer, and the turned-up height of the carcass cord layer turned-up part to the steel wire ring ranges from 35mm to 45mm.

[0022] In some of the embodiments, it also includes a wear-resistant rubber at the end, which is wrapped around the outside of the outer fiber cord layer and connected to the inner lining after passing through the steel wire ring.

[0023] In some of the embodiments, the hardness of the sub-mouth wear-resistant rubber ranges from 70 Shore hardness to 80 Shore hardness.

[0024] The beneficial effects of the present invention are as follows: the all-steel radial load-bearing tire of the present invention comprises a apex rubber core, a carcass cord layer, an outer bead reinforcing cord layer, an inner bead reinforcing cord layer and an outer fiber cord layer; wherein the carcass cord layer is wrapped around the outside of the apex rubber core, and the upper end is covered with a first protective layer; the outer bead reinforcing cord layer is arranged on a side surface of the carcass cord layer located on the outer side of the bead structure and away from the apex rubber core, and the upper end is covered with a second protective layer; the inner bead reinforcing cord layer is arranged on a side surface of the carcass cord layer located on the inner side of the bead structure and away from the apex rubber core, and the upper end is covered with a third protective layer; the outer fiber cord layer is arranged on a side of the outer bead reinforcing cord layer away from the carcass cord layer, and the upper end is higher than the outer bead reinforcing cord layer. Therefore, the all-steel radial load-bearing tire of the present invention covers the upper end of the carcass cord layer with the first protective layer, and the first protective layer is attached to the inner side of the outer bead reinforcement cord layer; the second protective layer covers the upper end of the outer bead reinforcement cord layer, the upper end of the outer fiber cord layer is higher than the outer bead reinforcement cord layer, and the second protective layer is attached to the inner side of the outer fiber cord layer; the third protective layer covers the upper end of the inner bead reinforcement cord layer, so that the upper end point of the carcass cord layer can be lower than the outer bead reinforcement cord layer, and the upper end point of the outer bead reinforcement cord layer is lower than the outer fiber cord layer, thereby realizing the end point protection of the carcass cord layer and the outer bead reinforcement cord layer, effectively dispersing the stress of the carcass end point, avoiding the early damage of the carcass end point, and improving the durability of the all-steel radial load-bearing tire of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of an existing all-steel radial load-bearing tire;

[0026] Figure 2 Schematic diagram of an all-steel radial load-bearing tire in an embodiment of the present invention.

[0027] In the figure: 1. existing sidewall; 2. existing tread wear-resistant rubber; 3. existing tread wire cloth; 4. existing inner lining rubber; 5. existing carcass cord layer; 6. existing lower apex rubber; 7. existing upper apex rubber; 8. existing wire ring; 10. sidewall rubber; 20. inner liner; 100. carcass cord layer; 110. first protective layer; 200. outer tread reinforcing cord layer; 210. second protective layer; 300. inner tread reinforcing cord layer; 310. third protective layer; 400. outer fiber cord layer; 410. first cord layer; 420. second cord layer; 500. wire ring; 600. lower apex rubber; 700. upper apex rubber; 800. tread wear-resistant rubber. DETAILED DESCRIPTION

[0028] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] As the background technology, the bead structure of the all-steel radial load-bearing tire is a very critical part. The bead structure is a composite of multiple semi-components and frame materials. It bears the internal pressure stress of the tire and the additional stress of the rim under load. It is related to the load-bearing performance of the tire and requires a strict production process.

[0030] Under the current conditions of severe overloading in the transportation market, the existing all-steel radial load-bearing tires and their bead structures have insufficient supporting performance, large deformation, compression deformation of the carcass cord layer and the bead reinforcement cord, which easily leads to stress concentration. As a result, the existing all-steel radial load-bearing tires are prone to problems such as bead emptying, bead cracking, and explosion.

[0031] To solve the above problems, refer to Figure 2The present invention provides an all-steel radial load-bearing tire, comprising: an apex rubber core, a carcass cord layer 100, an outer bead reinforcement cord layer 200, an inner bead reinforcement cord layer 300 and an outer fiber cord layer 400. Among them, the carcass cord layer 100 is wrapped on the outside of the apex rubber core, and the upper end of the carcass cord layer 100 is covered with a first protective layer 110; the outer mouth reinforcement cord layer 200 is arranged on the side surface of the carcass cord layer 100 away from the apex rubber core, and the upper end of the outer mouth reinforcement cord layer 200 is covered with a second protective layer 210; the inner mouth reinforcement cord layer 300 is arranged on the side surface of the carcass cord layer 100 away from the apex rubber core, and the upper end of the inner mouth reinforcement cord layer 300 is covered with a third protective layer 310; the outer fiber cord layer 400 is arranged on the side of the outer mouth reinforcement cord layer 200 away from the carcass cord layer 100, and the upper end of the outer fiber cord layer 400 is higher than the upper end of the outer mouth reinforcement cord layer 200. Therefore, the all-steel radial load-bearing tire of the present invention covers the upper end of the carcass ply 100 with the first protective layer 110, and the first protective layer 110 is attached to the inner side of the outer bead reinforcing ply 200, so that the first protective layer 110 protects the upper end of the carcass ply 100; and the upper end of the outer bead reinforcing ply 200 is covered with the second protective layer 210, and the upper end of the outer fiber ply 400 is higher than the outer bead reinforcing ply 200, and the second protective layer 210 is 210 is attached to the inner side of the outer fiber cord layer 400, so that the second protective layer 210 protects the upper end of the outer bead reinforcement cord layer 200; and the third protective layer 310 covers the upper end of the inner bead reinforcement cord layer 300, so that the third protective layer 310 protects the upper end of the inner bead reinforcement cord layer 300; thereby, the stress of the tire body end point can be effectively dispersed, the early damage of the tire body end point can be avoided, and the durability of the all-steel radial load-bearing tire of the present invention can be improved.

[0032] It should be added that, in the embodiment of the present invention, the all-steel radial load-bearing tire of the present invention specifically includes: a tread, a sidewall and a bead structure. The all-steel radial load-bearing tire has a tire circumferential direction and a tire radial direction, the tread extends along the tire circumferential direction and is distributed in a ring shape, a pair of sidewalls are respectively arranged on both sides of the tread, and a pair of bead structures are respectively arranged on the radial inner side of the sidewall. And the bead structure includes the above-mentioned apex rubber core, carcass cord layer 100, outer bead reinforcement cord layer 200, inner bead reinforcement cord layer 300 and outer fiber cord layer 400.

[0033] And it should be noted that, in some embodiments, such as Figure 2 As shown, the outer bead reinforcing ply 200 is located on the surface of the inner portion of the bead structure; the inner bead reinforcing ply 300 is located on the surface of the outer portion of the bead structure; and the outer fiber ply 400 is located on the outer side of the bead structure.

[0034] In some of the embodiments, the upper end of the outer fiber cord layer 400 is higher than the outer bead reinforcing cord layer 200 and the upper end of the outer bead reinforcing cord layer 200; and / or, the upper end of the outer bead reinforcing cord layer 200 is higher than the carcass cord layer 100 and the upper end of the carcass cord layer 100, which can effectively disperse the carcass end point stress.

[0035] In some embodiments, the outer fiber ply 400 includes a first ply 410 and a second ply 420, which are stacked, the first ply 410 is attached to the surface of the outer bead reinforcement ply 200 on the side away from the carcass ply 100, and the second ply 420 is attached to the surface of the first ply 410 on the side away from the outer bead reinforcement ply 200. By adding the first ply 410 and the second ply 420, the defects of high density and heavy weight of the steel wire material can be reduced, and a special carcass and bead winding method can be formed. The first ply 410 and the second ply 420 use new rubber materials to ensure adhesion.

[0036] In some embodiments, there is a first distance between the upper end of the first protective layer 110 and the upper end of the carcass cord layer 100, and the first distance ranges from 10 mm to 20 mm, that is, the rubber height of the first protective layer 110 ranges from 10 mm to 20 mm.

[0037] And / or, in some embodiments, there is a second distance between the upper end of the second protective layer 210 and the upper end of the outer reinforcing cord layer 200, and the second distance ranges from 10 mm to 20 mm. That is, the height of the rubber material of the second protective layer 210 is 10 mm to 20 mm.

[0038] In some of the embodiments, there is a third distance between the upper end of the outer fiber ply 400 and the upper end of the carcass ply 100 , and the third distance ranges from 25 mm to 50 mm.

[0039] In some embodiments, the first protective layer 110 is a nylon cord or film, and the first protective layer 110 can be a single-layer film with a film thickness of 0.5 mm to 2.0 mm and a film width of 20 mm to 50 mm. The first protective layer 110 is used to hem or overlap the carcass cord 100. And / or, in some other embodiments, the second protective layer 210 is a nylon cord or film, and the second protective layer 210 can be a single-layer film with a film thickness of 0.5 mm to 2.0 mm and a film width of 20 mm to 50 mm. The second protective layer 210 is used to hem or overlap the outer reinforcing cord layer 200.

[0040] Furthermore, in some of these embodiments, Figure 2As shown, the outer mouth reinforcement cord layer 200 is set to 1 to 2 layers, preferably 1 layer, with a step of 15mm to 30mm.

[0041] like Figure 2 As shown, a wire ring 500 is provided inside the apex core. In addition, the apex core includes a lower apex 600 and an upper apex 700, wherein the upper apex 700 is located near the end surface of the tire bead structure, and the lower apex 600 is located inside the tire bead structure.

[0042] In some embodiments, the hardness of the wire ring 500 is greater than the hardness of the lower apex 600. And / or, in some other embodiments, the lower apex 600 is a soft apex core, and the upper apex 700 is a hard apex core. The hardness of the lower apex 600 can be adjusted under the above conditions.

[0043] In some embodiments, the height of the upper apex 700 is higher than the height of the carcass ply 100. Further, the height of the upper apex 700 is much higher than the height of the carcass ply 100. There is a strong adhesive force between the upper apex 700 and the carcass ply 100, ensuring that the all-steel radial load-bearing tire of the present invention can maintain good anti-destruction performance during vehicle driving.

[0044] In some embodiments, the steel wires of the carcass ply 100 have an angle of 90 degrees and are symmetrically distributed for winding the steel wire ring 700. The carcass ply 100 can be made of different types of steel wire materials.

[0045] In some embodiments, the carcass ply 100 is turned up around the steel bead 500, specifically, the carcass ply 100 is turned up from the inside of the steel bead 500 to the outside around the bottom of the steel bead 500 and then turned up to form a carcass ply turned up portion, the carcass ply turned up portion is curved, the carcass ply turned up portion and the carcass ply 100 are attached to each other, and the turned up height of the carcass ply turned up portion to the steel bead 500 ranges from 35 mm to 45 mm. Among them, the carcass ply turned up portion is a film, which can realize the hemming or overlapping of the carcass ply 100.

[0046] In some embodiments, the outer sprocket reinforcement cord layer 200 goes from the outer side of the wire ring 500 inward around the bottom of the wire ring 500 and then turns up to form the sprocket wire cloth turning part, which is equivalent to forming the inner sprocket reinforcement cord layer 300. In some embodiments, the upper end of the inner sprocket reinforcement cord layer 300 is wrapped with a third protective layer 310, which is a nylon cord or film, and is used to hem or overlap the inner sprocket reinforcement cord layer 300. In some other embodiments, the angle of the third protective layer 310 is 30° to 50°.

[0047] In some embodiments, the all-steel radial load-bearing tire of the present invention further includes an inner liner 20. The inner liner 20 is disposed at the end surface of the bead structure and the inner side of the bead structure, and the inner liner 20 is used to cover the inner bead reinforcement cord layer 300, the outer bead reinforcement cord layer 200, the outer fiber cord layer 400 and the carcass cord layer 100. That is, specifically, the inner liner 20 is wrapped around the inner side of the bead wrapped with the carcass cord layer 100 and the outer bead reinforcement cord layer 200.

[0048] In some embodiments, the all-steel radial load-bearing tire of the present invention further includes a bead wear-resistant rubber 800, which is arranged at the end surface of the bead structure and the outer side of the bead structure, and is used to wrap the outer fiber cord layer 400. Specifically, the bead wear-resistant rubber 800 is connected to the inner liner 20 after bypassing the wire ring 500, and the sidewall rubber 10 is arranged at the side of the wall, and the carcass cord layer 100 is located between the inner liner 20 and the sidewall rubber 10. The bead wear-resistant rubber 800 and the sidewall rubber 10 are wrapped on the outer side of the bead wrapped with the carcass cord layer 100 and the outer bead reinforcement cord layer 200.

[0049] In some of the embodiments, the hardness of the sub-mouth wear-resistant rubber 800 ranges from 70 Shore hardness to 80 Shore hardness, and the hardness of the sub-mouth wear-resistant rubber 800 can be adjusted within the range of the above Shore hardness.

[0050] The tire bead structure of the all-steel radial load-bearing tire of the present invention comprises the above-mentioned apex rubber core, carcass ply 100, outer bead reinforcing ply 200, inner bead reinforcing ply 300 and outer fiber ply 400. The carcass ply 100 is wrapped around the outside of the apex rubber core, and the carcass ply 100 is provided with a first protective layer 110, and the first protective layer 110 is used to wrap the upper end of the carcass ply 100; the outer bead reinforcing ply 200 is provided on the side surface of the carcass ply 100 away from the apex rubber core and is located on the inner side of the tire bead structure, and the outer bead reinforcing ply 200 is provided with a second protective layer 210, and the second protective layer 210 is used to wrap the outer bead reinforcing ply The upper end of the layer 200; the inner bead reinforcing cord layer 300 is arranged on the side surface of the carcass cord layer 100 away from the apex rubber core, and is located on the outside of the bead structure, and the inner bead reinforcing cord layer 300 is provided with a third protective layer 310, and the third protective layer 310 is used to wrap the upper end of the inner bead reinforcing cord layer 300; the outer fiber cord layer 400 is arranged on the side of the outer bead reinforcing cord layer 200 away from the carcass cord layer 100, and is located on the outside of the bead structure.

[0051] Therefore, the all-steel radial load-bearing tire of the present invention can improve the durability of the bead structure by improving the form and material distribution of the bead structure, and implements end point protection for the carcass cord layer 100, the outer bead reinforcement cord layer 200, and the inner bead reinforcement cord layer 300, thereby effectively dispersing the stress of the carcass end points and avoiding early damage to the carcass end points.

[0052] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0053] In addition, the terms "above" and "below" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "above" and "below" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0054] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0056] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. An all-steel radial load-carrying tire, characterized in that: Comprising a tire bead structure; wherein the tire bead structure comprises: Triangle rubber core; A carcass ply is wrapped around the outside of the apex rubber core, and the upper end thereof is coated with a first protective layer; An outer bead reinforcing cord layer is provided on a side surface of a portion of the carcass cord layer located at the outer side of the bead structure and away from the apex rubber core, and the upper end is covered with a second protective layer; An inner reinforcing cord layer is provided on a side surface of a portion of the carcass cord layer located at the inner side of the bead structure and away from the apex rubber core, and the upper end is covered with a third protective layer; The outer fiber cord layer is arranged on a side of the outer serration reinforcing cord layer away from the carcass cord layer, and the upper end thereof is higher than the outer serration reinforcing cord layer.

2. The all-steel radial load-carrying tire according to claim 1, characterized in that: The upper end of the outer cord reinforcement layer is higher than the carcass cord layer.

3. The all-steel radial load-carrying tire according to claim 1, characterized in that: The outer fiber cord layer comprises: A first cord layer is attached to a surface of the outer cord reinforcement layer on a side away from the carcass cord layer; The second cord layer is attached to a surface of the first cord layer on a side away from the outer cord reinforcement cord layer; wherein: An upper end of the first cord layer is higher than that of the second cord layer.

4. The all-steel radial load-carrying tire according to claim 1, characterized in that: There is a first distance between the upper end of the first protective layer and the upper end of the carcass ply, and the first distance ranges from 10 mm to 20 mm; And / or, there is a second distance between the upper end of the second protective layer and the upper end of the outer cord reinforcement layer, and the second distance ranges from 10 mm to 20 mm.

5. The all-steel radial load-carrying tire according to claim 1, characterized in that: There is a third distance between the upper end of the outer fiber cord layer and the upper end of the carcass cord layer, and the third distance ranges from 25 mm to 50 mm.

6. The all-steel radial load-carrying tire according to claim 1, characterized in that: The first protective layer is a nylon cord or a film; and / or the second protective layer is a nylon cord or a film.

7. The all-steel radial load-carrying tire according to claim 1, characterized in that: A wire ring is provided inside the apex rubber core, and the apex rubber core includes a lower apex rubber and an upper apex rubber, wherein the lower apex rubber is provided on the top of the wire ring, and the upper apex rubber is provided on the side of the lower apex rubber away from the wire ring; wherein the hardness of the wire ring is greater than the hardness of the lower apex rubber.

8. The all-steel radial load-carrying tire according to claim 7, characterized in that: The carcass cord layer goes around the bottom of the steel wire ring from the inner side of the steel wire ring to the outside and is turned up to form a carcass cord layer turned-up part; wherein the carcass cord layer turned-up part is in contact with the carcass cord layer, and the turned-up height of the carcass cord layer turned-up part to the steel wire ring ranges from 35mm to 45mm.

9. The all-steel radial load-carrying tire according to claim 8, characterized in that: It also includes a sub-mouth wear-resistant rubber, which is wrapped around the outside of the outer fiber cord layer and connected to the inner liner after passing through the steel wire ring.

10. The all-steel radial load-carrying tire according to claim 9, characterized in that: The hardness of the sub-mouth wear-resistant rubber ranges from 70 to 80 Shore hardness.

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