All-steel radial tire

Abstract

The invention relates to the field of tires, in particular to an all-steel radial tire which comprises a tire body layer, a tire core layer and a tire core layer, the steel wire wrapping cloth layer is arranged on the outer side of the tire body layer and connected to form a framework; the lining rubber layer wraps the inner side of the framework, is arranged on the outer side of the tire body layer and covers the steel wire wrapping cloth layer; the seam allowance rubber layer wraps the seam allowance part of the framework; wherein a rim fitting width point w1 is arranged on the edge of the outer side of the seam allowance rubber layer; a first positioning line L1 is formed by extending along the vertical direction from the rim bonding width point w1; and the inner end point of the steel wire wrapping cloth layer is lower than or equal to the intersection point of the first positioning line L1 and the inner contour of the tire. According to the all-steel radial tire, the inner end point of the steel wire wrapping cloth layer is limited to be lower than or equal to the intersection point of the first positioning line L1 formed by extending from the rim bonding width w1 in the vertical direction and the inner contour of the tire, so that the rigidity of the tire bead part of the tire can be in uniform transition, and the bearing performance of the tire bead part is improved.

Description

Technical Field

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

[0002] The bead of an all-steel radial tire is a very critical part. It 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.

[0003] The wire cloth of the traditional tire bead structure is directly attached to the tire body, and the tire body and the wire cloth are in direct contact on the inner side of the tire bead. During the use of the tire, especially for high-load tires, the tire bead is deformed by force, causing the tire body and the wire cloth to bend and deform. In particular, stress concentration is easily formed at the end point where the tire body and the wire cloth are turned up on the inner side of the tire bead, resulting in early damage.

[0004] The current problem that needs to be solved is how to provide a new all-steel radial tire to resist deformation, eliminate stress concentration, improve tire bead durability and improve tire load-bearing performance. Summary of the invention

[0005] The present invention provides an all-steel radial tire, which is used to solve the problems of how to resist deformation, eliminate stress concentration, improve tire bead durability and improve tire load-bearing performance.

[0006] In one aspect, the present invention provides an all-steel radial tire, comprising:

[0007] Carcass layer;

[0008] The steel wire cloth layer is arranged outside the carcass layer and connected to form a skeleton;

[0009] The inner lining rubber layer is wrapped on the inner side of the frame, arranged on the outer side of the carcass layer and covered with the steel wire cloth layer;

[0010] The sub-mouth glue layer is wrapped around the sub-mouth of the skeleton; wherein,

[0011] The outer edge of the sub-mouth rubber layer is provided with a rim engagement width point w1; and,

[0012] A first positioning line L1 is formed extending from the rim contact width point w1 in the vertical direction; and,

[0013] The inner end point of the steel wire cloth layer is lower than or equal to the intersection point of the first positioning line L1 and the inner contour of the tire.

[0014] In some embodiments, a second positioning line L2 is formed by horizontally extending inward from the outer end point of the steel wire cloth layer;

[0015] The inner end point of the steel wire cloth layer is higher than or equal to the intersection point of the second positioning line L2 and the inner contour of the tire.

[0016] In some embodiments, it also includes:

[0017] The edge wrapping film is wrapped around the inner end point of the steel wire cloth layer, and comprises a first part and a second part connected to each other, wherein the first part is arranged between the steel wire cloth layer and the carcass layer, and the second part is arranged between the steel wire cloth layer and the inner lining layer.

[0018] In some of the embodiments, the edge wrapping film is distributed along the entire circumference of the tire.

[0019] In some embodiments, it also includes:

[0020] Apex rubber core, the carcass layer is wrapped around the outside of the apex rubber core;

[0021] The wire ring is arranged inside the triangle rubber core.

[0022] In some embodiments, the apex comprises:

[0023] Lower triangle rubber, the wire ring is arranged inside the lower triangle rubber;

[0024] The upper apex is arranged on the upper side of the lower apex.

[0025] In some embodiments, it also includes:

[0026] The sidewall rubber layer is wrapped around the outside of the frame.

[0027] In some of the embodiments, it also includes: a sub-mouth reinforcing rubber, which is located at the sub-mouth part of the frame, one end of which is arranged between the steel wire cloth layer and the sub-mouth rubber layer, and the other end of which is arranged between the frame and the sidewall rubber layer, and multiple layers of sub-mouth reinforcing rubber are stacked.

[0028] In some of the embodiments, the upper end point of the bead reinforcing rubber is higher than the outer end point of the carcass layer.

[0029] In some of the embodiments, the outer end point of the steel wire covering layer is lower than the outer end point of the carcass layer.

[0030] The beneficial effects of the present invention are as follows: the all-steel radial tire comprises: a carcass layer, a steel wire cloth layer, an inner lining rubber layer, and a bead rubber layer; the steel wire cloth layer is arranged on the outer side of the carcass layer and connected to form a skeleton; the inner lining rubber layer is wrapped on the inner side of the skeleton, and is arranged on the outer side of the carcass layer and covers the steel wire cloth layer; the bead rubber layer is wrapped on the bead portion of the skeleton; wherein the outer edge of the bead rubber layer is provided with a rim engagement width point w1; and a first positioning line L1 is formed by extending from the rim engagement width point w1 in the vertical direction; and the inner end point of the steel wire cloth layer is lower than or equal to the intersection of the first positioning line L1 and the inner contour of the tire. The all-steel radial tire can make the rigidity of the bead portion of the tire evenly transition and improve the load-bearing performance of the bead portion by limiting the inner end point of the steel wire cloth layer to be lower than or equal to the intersection of the first positioning line L1 formed by extending from the rim engagement width w1 in the vertical direction and the inner contour of the tire. The all-steel radial tire of the present invention improves the tire load-bearing performance by optimizing the rubber components and frame materials at the tire bead area; and improves the durability of the tire bead area by adjusting the position of the inner end point of the steel wire cloth layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of an all-steel radial tire in the prior art;

[0032] Figure 2 Schematic diagram of the structure of the all-steel radial tire in the embodiment of the present invention.

[0033] In the figure: 1. existing inner lining; 2. existing carcass; 3. existing steel wire cloth; 4. existing hard apex rubber core; 5. existing groin rubber; 6. existing sidewall rubber; 7. existing groin reinforcement strip; 8. existing soft apex rubber core; 10. existing steel wire ring; 100. inner lining rubber layer; 200. carcass layer; 300. steel wire cloth layer; 400. apex rubber core; 410. lower apex rubber; 420. upper apex rubber; 500. groin rubber layer; 600. sidewall rubber layer; 700. groin reinforcement rubber; 800. steel wire ring; 900. edge wrapping film; 910. first part; 920. second part. DETAILED DESCRIPTION

[0034] 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.

[0035] As mentioned in the background technology, the bead area of ​​the all-steel radial tire is a very critical area. The bead area 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 strict production technology. Figure 1 As shown, the existing tire includes: an existing inner liner 1, an existing carcass 2, an existing wire cloth 3, an existing hard triangle rubber core 4, an existing bead rubber 5, an existing sidewall rubber 6, an existing bead reinforcement strip 7, an existing soft triangle rubber core 8 and an existing wire ring 10. In the traditional tire, the existing wire cloth 3 is directly attached to the existing carcass 2, especially the existing carcass 2 on the inner side of the bead part is in direct contact with the existing wire cloth 3. During the use of the tire, especially for high-load tires, the bead part is deformed by force, causing the existing carcass 2 and the existing wire cloth 3 to bend and deform, especially the existing carcass 2 on the inner side of the bead part and the existing wire cloth 3 The end point of the reverse package is very likely to form stress concentration, resulting in early damage.

[0036] Therefore, the current problem that needs to be solved is how to provide a new all-steel radial tire to resist deformation, eliminate stress concentration, improve the durability of the bead area, and improve the tire load-bearing performance.

[0037] To solve the above problems, refer to Figure 2 The present invention provides an all-steel radial tire, wherein the all-steel radial tire comprises: a carcass layer 200, a steel wire cloth layer 300, an inner liner rubber layer 100 and a spur rubber layer 500; the steel wire cloth layer 300 is arranged on the outer side of the carcass layer 200 and connected to form a skeleton, and the spur rubber layer 500 is wrapped around the spur part of the skeleton; wherein the outer edge of the spur rubber layer 500 is provided with a rim engagement width point w1; and a first positioning line L1 is formed by extending from the rim engagement width point w1 in a vertical direction; and an inner end point of the steel wire cloth layer 300 is lower than or equal to an intersection of the first positioning line L1 and an inner contour of the tire and is recorded as a first limiting area.

[0038] The all-steel radial tire of the present invention determines the rim engagement width point w1, and extends from the rim engagement width point w1 in the vertical direction to form a first positioning line L1, ensuring that the inner end point of the wire cloth layer 300 is lower than or equal to the intersection of the first positioning line L1 and the inner contour of the tire, that is, the first limiting area. Therefore, the first positioning line L1 is determined to be a straight line extending from the rim engagement width point w1 in the vertical direction, and the inner end point position of the wire cloth layer 300 is limited to be lower than or equal to the first limiting area, so that the inner positioning of the wire cloth layer 300 can be adjusted, so that the rigidity of the tire bead portion is uniformly transitioned, and the load-bearing performance of the bead portion is improved.

[0039] It should be noted that since the rim engagement width point w1 is located near the top edge of the rim, the center point can usually be found by observing the mark on the rim or the shape of the rim; as the rim engagement width value increases, the inward displacement of the tire bead portion can be increased, thereby balancing the stress distribution of the bead portion and the shoulder portion, which helps to improve the durability of the tire; and, the adjustment of the rim engagement width can also affect the ground contact pressure distribution of the tire. By appropriately increasing the rim engagement width, the center of the ground contact pressure distribution can be transferred to the shoulder, thereby improving the wear resistance; and, as the rim engagement width increases, the load capacity of the tire is slightly improved, because the increase in width can disperse the pressure and improve the overall load-bearing capacity of the tire; in addition, as the rim engagement width value increases, the stress, strain and strain energy extreme values ​​and their variation amplitudes in the outer end point area of ​​the wire cloth layer 300 are significantly reduced as a whole.

[0040] In some embodiments, such as Figure 2 As shown, the second positioning line L2 is horizontally extended from the outer end point of the steel wire cloth layer 300; the inner end point of the steel wire cloth layer 300 is higher than or equal to the intersection of the second positioning line L2 and the inner contour of the tire and is recorded as the second limiting area. By determining the second positioning line L2 on the basis of determining the first positioning line L1, and limiting the inner end point of the steel wire cloth layer 300 to be lower than or equal to the first limiting area, the inner end point of the steel wire cloth layer 300 is also limited to be higher than or equal to the second limiting area, so that the inner end point of the steel wire cloth layer 300 is limited to the first limiting area and the second limiting area at the same time, the tire bead part can achieve a uniform rigid transition and improve the load-bearing performance of the bead part.

[0041] In some embodiments, the all-steel radial tire of the present invention further includes an edge wrapping film 900, which is wrapped around the inner end point of the steel wire cloth layer 300, and the edge wrapping film 900 includes a first part 910 and a second part 920 connected to each other, wherein the first part 910 and the second part 920 are integrally connected, the first part 910 is arranged between the steel wire cloth layer 300 and the carcass layer 200, and both side surfaces of the first part 910 are respectively adhered to the steel wire cloth layer 300 and the carcass layer 200, the second part 920 is arranged between the steel wire cloth layer 300 and the inner lining rubber layer 100, and both side surfaces of the second part 920 are respectively adhered to the steel wire cloth layer 300 and the inner lining rubber layer 100. On the basis of limiting the inner end point of the wire cloth layer 300 in the first limiting zone and the second limiting zone, the edge film 900 can be used as an isolation structural member between the carcass layer 200 and the wire cloth layer 300, thereby improving the durability of the bead area of ​​the all-steel radial tire.

[0042] In some of the embodiments, the edge tape 900 is distributed along the entire circumference of the tire.

[0043] In some of the embodiments, the all-steel radial tire of the present invention further includes a apex rubber core 400 and a wire bead 800; the carcass layer 200 is wrapped around the outside of the apex rubber core 400; the wire bead 800 is arranged inside the apex rubber core 400; wherein a skeleton is formed between the wire bead 800, the apex rubber core 400 and the carcass layer 200.

[0044] In some embodiments, the all-steel radial tire of the present invention further includes a grommet rubber layer 500 and a sidewall rubber layer 600. The sidewall rubber layer 600 is coated on the outer side of the frame. The grommet rubber layer 500 is wrapped around the grommet portion of the frame; wherein the above-mentioned rim contact width point w1 is located at the outer edge of the grommet rubber layer 500.

[0045] In some embodiments, the apex core 400 includes a lower apex 410 and an upper apex 420. The wire ring 800 is disposed inside the lower apex 410. The upper apex 420 is disposed on the upper side of the lower apex 410.

[0046] In some of the embodiments, the all-steel radial tire of the present invention further includes an inner liner rubber layer 100 , which is wrapped around the inner side of the frame, and is arranged on the outer side of the carcass layer 200 and covers the steel wire cloth layer 300 .

[0047] In some embodiments, the all-steel radial tire of the present invention further includes a bead reinforcing rubber 700. The bead reinforcing rubber 700 is located at the bead portion of the frame; one end of the bead reinforcing rubber 700 is disposed between the steel wire cloth layer 300 and the bead rubber layer 500, and the other end of the bead reinforcing rubber 700 is disposed between the frame and the sidewall rubber layer 600; and the bead reinforcing rubber 700 is configured as multiple layers, and the multiple layers of bead reinforcing rubber 700 are stacked.

[0048] In some of the embodiments, the upper end point of the spur reinforcing rubber 700 is higher than the outer end point of the carcass layer 200 .

[0049] And / or, in some other embodiments, the outer endpoint of the steel wire cloth layer 300 is lower than the outer endpoint of the carcass layer 200. Since the outer endpoint of the steel wire cloth layer 300 extends in the horizontal direction to form the second positioning line L2, and the inner endpoint of the steel wire cloth layer 300 is higher than or equal to the intersection of the second positioning line L2 and the inner contour of the tire, the height of the outer endpoint of the steel wire cloth layer 300 can be adjusted by limiting the height of the outer endpoint of the carcass layer 200, and further, the height of the inner endpoint of the steel wire cloth layer 300 can be limited by limiting the height of the outer endpoint of the steel wire cloth layer 300. By adjusting the position of the steel wire cloth layer 300, the rigidity of the tire bead portion is uniformly transitioned, and the load-bearing performance of the bead portion is improved.

[0050] Therefore, the all-steel radial tire of the present invention is formed by arranging the steel wire cloth layer 300 on the outside of the carcass layer 200 and connecting them to form a skeleton, the inner lining rubber layer 100 is wrapped on the inside of the skeleton, and is arranged on the outside of the carcass layer 200 and covers the steel wire cloth layer 300, and the spur rubber layer 500 is wrapped on the spur part of the skeleton; the outer edge of the spur rubber layer 500 is provided with a rim engagement width point w1, and a first positioning line L1 is formed by extending from the rim engagement width point w1 in the vertical direction, and the inner end point of the steel wire cloth layer 300 is lower than or equal to the intersection of the first positioning line L1 and the inner contour of the tire, that is, the first limiting area, so that the inner end point of the steel wire cloth layer 300 is limited by the first limiting area. In addition, a second positioning line L2 is formed by horizontally extending inward from the outer end point of the steel wire cloth layer 300; wherein, the inner end point of the steel wire cloth layer 300 is higher than or equal to the intersection of the second positioning line L2 and the inner contour of the tire. The inner endpoint of the wire cloth layer 300 is higher than or equal to the intersection of the second positioning line L2 and the inner contour of the tire, namely the second limiting area. Therefore, the inner endpoint of the wire cloth layer 300 is limited by the first limiting area and the second limiting area, which can make the rigidity of the bead part of the tire transition evenly and improve the load-bearing performance of the bead part.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 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.

[0055] 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 tire, characterized in that: include: Carcass layer; A steel wire cloth layer is arranged outside the carcass layer and connected to form a skeleton; An inner lining rubber layer, wrapped on the inner side of the frame, arranged on the outer side of the carcass layer and covering the steel wire cloth layer; The sub-mouth glue layer is wrapped around the sub-mouth part of the skeleton; wherein, The outer edge of the sub-mouth rubber layer is provided with a rim contact width point w1; and A first positioning line L1 is formed extending from the rim contact width point w1 in the vertical direction; and The inner end point of the steel wire cloth layer is lower than or equal to the intersection point of the first positioning line L1 and the inner contour of the tire.

2. The all-steel radial tire according to claim 1, characterized in that: A second positioning line L2 is horizontally extended from the outer end point of the steel wire cloth layer; wherein, The inner end point of the steel wire cloth layer is higher than or equal to the intersection point of the second positioning line L2 and the inner contour of the tire.

3. The all-steel radial tire according to claim 1, characterized in that: Also includes: The edge wrapping film is wrapped around the inner end point of the steel wire cloth layer, and includes a first part and a second part connected to each other, wherein the first part is arranged between the steel wire cloth layer and the carcass layer, and the second part is arranged between the steel wire cloth layer and the inner lining rubber layer.

4. The all-steel radial tire according to claim 3, characterized in that: The edge wrapping rubber sheets are distributed along the entire circumference of the tire.

5. The all-steel radial tire according to claim 3, characterized in that: Also includes: Apex rubber core, the carcass layer is wrapped outside the apex rubber core; The wire ring is arranged inside the triangle rubber core.

6. The all-steel radial tire according to claim 5, characterized in that: The apex rubber core comprises: A lower triangle rubber, wherein the wire ring is arranged inside the lower triangle rubber; The upper apex rubber is arranged on the upper side of the lower apex rubber.

7. The all-steel radial tire according to claim 1, characterized in that: Also includes: The sidewall rubber layer is coated on the outer side of the frame.

8. The all-steel radial tire according to claim 7, characterized in that: Also includes: The spur reinforcing rubber is located at the spur part of the frame, one end of which is arranged between the steel wire cloth layer and the spur rubber layer, and the other end of which is arranged between the frame and the sidewall rubber layer. Multiple layers of the spur reinforcing rubber are stacked.

9. The all-steel radial tire according to claim 8, characterized in that: The upper end point of the bead reinforcing rubber is higher than the outer end point of the carcass layer.

10. The all-steel radial tire according to claim 2 or 9, characterized in that: The outer end point of the steel wire covering layer is lower than the outer end point of the carcass layer.

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