A kind of bead reinforced all-steel radial tire

Abstract

The utility model relates to a kind of bead reinforced type full steel radial tire, comprising: carcass;Bead, the number is two, and is respectively arranged at the inner ring of the two sides of carcass;Tire bead wire, it is arranged in bead;Carcass wire, it is arranged in carcass, and end extends to bead, and U-shaped around tire bead wire forms reverse packing wire section;Steel wire wrapping cloth, it is located in bead, and it is U-shaped around the outside of carcass wire and reverse packing wire section;Bead wrapping cloth, the number is multiple, and it is wrapped in the outside of steel wire wrapping cloth one by one. By setting multiple layers of bead wrapping cloth outside steel wire wrapping cloth, and the bead wrapping cloth is fiber cloth material, to effectively improve the strength of its wrapping, effectively prevent its puncture bead, form the cracking of bead, simultaneously by the arrangement of bead wrapping cloth in inside step, can reduce weight increase and cost rise due to wrapping cloth too thick while ensuring strength.

Description

Technical Field

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

[0002] All-steel radial tires are widely used in heavy-duty trucks due to their excellent performance. However, the bead area often suffers from wear and aging due to complex stress environments (such as rim pressure, internal air pressure, and driving vibration), affecting service life and safety. With the development of the logistics and transportation industry, the requirements for tire load capacity and durability are increasing.

[0003] However, traditional all-steel radial tires (such as the 11.00R20 model) have shortcomings in design and manufacturing processes. Existing technologies mostly use simple designs such as reverse-wrapped tire carcass, closed-loop rubber bonding, or nylon winding reinforcement, but under heavy-load conditions, there is still a risk that the tire carcass cords will be cut and broken by the steel wire bead. Therefore, a bead-reinforced all-steel radial tire is proposed to solve the above problems. Utility Model Content

[0004] This utility model provides a bead-reinforced all-steel radial tire. By setting up a bead wrapping material with multiple layers of reverse-wrapped fiber cloth, and by adjusting the thickness and number of layers of the wrapping material, the effect of precise protection of the bead area can be achieved.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A bead-reinforced all-steel radial tire, comprising:

[0006] fetus;

[0007] There are two tire beads, one on each side of the tire body, located on the inner ring.

[0008] Bead wires are installed in the bead.

[0009] The carcass steel wire is set in the carcass, with its end extending into the bead and forming a U-shaped wrap around the bead steel wire to form a reverse-wrapped steel wire segment;

[0010] The steel wire wrapping is located in the tire bead and is wrapped in a U-shape around the outside of the tire carcass steel wires and the reverse-wrapped steel wire section;

[0011] The bead wrappings are multiple in number and are wrapped one by one around the outside of the wire wrappings, with the length of the inner end increasing from the inside to the outside.

[0012] Based on the above technical solution, the present invention can be further improved as follows.

[0013] Furthermore, the reverse-wrapped steel wire segment bends inward toward the bead after passing around the bead wire, and the shape of the steel wire wrapping cloth matches that of the bead wrapping cloth.

[0014] Furthermore, the bead wire comprises multiple strands of wire wound in the bead, and the outside of the wire strands is provided with a rubber coating that covers them.

[0015] Furthermore, the steel wire coils in each layer are arranged in an alternating pattern.

[0016] Furthermore, the number of steel wire rings in each layer increases progressively from the top and bottom sides towards the middle.

[0017] Furthermore, the bead wrapping fabric is specifically one or more of PBO fiber, aramid fiber, and ultra-high molecular weight polyethylene.

[0018] Furthermore, a nano-clay reinforced adhesive layer is also provided between the bead wrappings.

[0019] Furthermore, a counterweight is embedded on the inner side of the tire bead to compensate for the mass difference.

[0020] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0021] 1. This bead-reinforced all-steel radial tire features multiple layers of bead wrapping outside the steel wire wrapping. The bead wrapping is made of fiber cloth, effectively increasing the strength of the wrapping and preventing punctures and cracking. The stepped arrangement of the bead wrapping on the inner side ensures strength while reducing weight and cost increases caused by excessive wrapping thickness. Furthermore, the progressively increasing length from the inside out effectively wraps the inner layers, preventing detachment and improving wrapping stability.

[0022] 2. This bead-reinforced all-steel radial tire features a reverse-wrapped steel wire section that bends inward after passing over the bead wire. This bend facilitates matching the fabric angle with the tire carcass cord angle, effectively reducing shear stress between the fabric and the tire carcass and improving the overall stability of the bead. Furthermore, the addition of a nano-clay reinforcing layer between the bead fabric layers effectively inhibits relative slippage between the fabric layers, enhancing the bead's shear resistance, fatigue resistance, and durability. Attached Figure Description

[0023] Figure 1 A schematic diagram of a bead-reinforced all-steel radial tire provided for an embodiment of this utility model;

[0024] Figure 2 for Figure 1 Enlarged schematic diagram of structure A in the middle;

[0025] Figure 3 This is a front view schematic diagram of a bead-reinforced all-steel radial tire according to an embodiment of the present invention;

[0026] Figure 4 for Figure 3 Enlarged schematic diagram of the B-structure.

[0027] The attached diagram lists the components represented by each number as follows:

[0028] Tire body 1; Tire bead 2; Tire bead wire 3; Wire bead 301; Wire bead with rubber coating 302; Tire body wire 5; Reverse wrapped wire segment 6; Wire wrapped fabric 7; Tire bead wrapped fabric 8; Counterweight plate 9. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0030] like Figure 1-4 As shown, a bead-reinforced all-steel radial tire in this embodiment includes a tire carcass 1; a bead 2; a bead wire 3; a tire carcass wire 5; a reverse-wrapped wire segment 6; a wire wrapping fabric 7; and a bead wrapping fabric 8.

[0031] There are two bead 2s, which are respectively located on the inner rings of both sides of the tire body 1. The bead wire 3 is arranged in a ring in the bead 2. The two ends of the tire body wire 5 extend into the bead 2 and form a U-shaped wrapping wire segment 6 around the bead wire 3, thus forming an integral transmission structure with the bead wire 3. The wire wrapping cloth 7 is located in the bead 2 and is arranged in a U-shape around the outside of the tire body wire 5 and the wrapping wire segment 6. In this embodiment, the length of the end of the wire wrapping cloth 7 is longer than the end of the wrapping wire segment 6, so that its end is wrapped in it to prevent it from puncturing the bead 2 under heavy pressure and causing the bead 2 to crack.

[0032] The bead wrapping 8 is made of fiber cloth. The fiber cloth is made of one or more of the following materials: high modulus, low elongation and good flexural resistance, such as PBO fiber, aramid fiber and ultra-high molecular weight polyethylene. This effectively improves the strength of the bead part and prevents the inner and outer steel wire wrapping 7 from puncturing the bead 2 and causing cracks in the bead 2.

[0033] There are multiple bead wraps 8, which are individually wrapped around the outside of the steel wire wrap 7. It should be noted that both ends of the bead wrap 8 wrap around the ends of the steel wire wrap 7, thereby forming effective protection for it.

[0034] In this embodiment, the number of bead wraps 8 is three layers, and the length of the inner end increases progressively from the inside to the outside. Thus, the stepped arrangement of the inner side of the bead wraps 8 can reduce the increase in weight and cost caused by excessively thick wraps while ensuring strength. In addition, since the length increases progressively from the inside to the outside, the inner wraps can be effectively wrapped, preventing multiple layers from detaching and improving the stability of the wrapping.

[0035] Furthermore, the reverse-wrapped steel wire segment 6, after passing around the bead wire 3, bends inward toward the bead 2, forming a shape as shown in the image. Figure 4 As shown, the teardrop shape of the steel wire wrapping fabric 7 and the bead wrapping fabric 8 are adapted to each other, so that the angle of the wrapping fabric can be matched with the angle of the tire cord by bending, which effectively reduces the shear stress between the wrapping fabric and the tire carcass and improves the overall stability of the bead.

[0036] Furthermore, the bead wire 3 includes multiple strands of wire coil 301 wound in the bead 2, and the outside of the wire coil 301 is provided with a wire coil coating 302 that wraps around it.

[0037] The steel wire rings 301 in each layer are arranged in an alternating pattern. Compared with the traditional parallel arrangement, this makes the arrangement of the steel wires more compact and orderly, effectively dispersing stress concentration points and enhancing the overall strength and toughness of the steel wire rings.

[0038] In addition, the number of steel wire rings 301 in each layer increases gradually from the top and bottom to the middle, thus forming a gradual cross-section from the sides to the middle, which improves its compressive strength.

[0039] In a preferred embodiment, a nano-clay reinforced adhesive layer is further provided between the bead wrappings 8, which can effectively suppress the relative slippage between the wrapping layers, construct a high-performance transition layer in the wrapping gap, and improve the bead's shear resistance, fatigue resistance and durability.

[0040] In a preferred embodiment, a counterweight 9 is also embedded on the inner side of the tire bead 2 to compensate for the mass difference. The counterweight 9 is specifically a tungsten powder counterweight to avoid uneven mass distribution caused by the asymmetrical structure of the wrapping fabric, which would exacerbate vibration at high speeds.

[0041] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A bead-reinforced all-steel radial tire, characterized in that, include: Fetal body (1); There are two bead rings (2), which are respectively set on the inner rings on both sides of the tire body (1); Bead wire (3) is set in bead (2); The carcass wire (5) is set in the carcass (1), with its end extending into the bead (2) and forming a U-shaped wrapping wire segment (6) around the bead wire (3). The steel wire wrap (7) is located in the bead (2) and is wrapped in a U-shape around the outside of the carcass steel wire (5) and the reverse-wrap steel wire section (6); There are multiple bead wraps (8), which are wrapped around the outside of the wire wraps (7) one by one, and the length of the inner end increases from the inside to the outside.

2. The bead-reinforced all-steel radial tire according to claim 1, characterized in that: The reverse-wrapped steel wire segment (6) bends inward toward the bead (2) after passing around the bead wire (3), and the shape of the steel wire wrapping cloth (7) and the bead wrapping cloth (8) are adapted to it.

3. A bead-reinforced all-steel radial tire according to claim 1 or 2, characterized in that: The bead wire (3) includes multiple wire loops (301) wound in the bead (2), and the wire loops (301) are covered with a wire loop coating (302) on the outside.

4. A bead-reinforced all-steel radial tire according to claim 3, characterized in that: The steel wire rings (301) in each layer are arranged in an alternating pattern.

5. A bead-reinforced all-steel radial tire according to claim 4, characterized in that: The number of wire rings (301) in each layer increases progressively from the top and bottom sides toward the middle.

6. The bead-reinforced all-steel radial tire according to claim 1, characterized in that: The bead wrapping (8) is specifically one or more of PBO fiber, aramid fiber and ultra-high molecular weight polyethylene.

7. A bead-reinforced all-steel radial tire according to claim 1, characterized in that: A nano-clay reinforced adhesive layer is also provided between the bead wrapping fabric (8).

8. A bead-reinforced all-steel radial tire according to claim 1, characterized in that: The inner side of the bead (2) is also embedded with a counterweight (9) to compensate for the mass difference.

Images