Diagonal aircraft tire
By adopting a wire ring structure with at least four layers and three steel wires, the problem of easy deformation of the wire ring in the prior art is solved, resulting in different bead widths and air leakage, and a more uniform bead width and higher air tightness are achieved.
Patent Information
- Application Number
- CN202421408446.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-19
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-06-19
AI Technical Summary
The wire ring structure of existing bias aviation tires is easily extruded and deformed, resulting in different bead widths and improper assembly and air leakage is likely to occur.
A wire ring structure with at least four layers and at least three steel wires per layer is adopted, and is fixed by bonding and fixing of the wire wrapping cloth and the bead core wrapping cloth to enhance the resistance to deformation.
It significantly improves the different distribution of vulcanized bead widths, reduces the risk of bead air leakage, and improves the air tightness of the tire and the reliability of the tire installation.
Smart Images
Figure CN222933655U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bias aviation tires, in particular to a bias aviation tire. Background Art
[0002] A bias aviation tire mainly includes a tread, a carcass and a bead. The whole is mainly composed of three basic materials: rubber, nylon cord and steel wire, which are bonded together by vulcanization. The tread is arranged on the outside of the carcass, and the beads are located at both side edges of the carcass. The bead mainly consists of a bead core and a bead wrapper. The bead core includes a wire ring and a wire ring wrapper wrapped around the wire ring. The carcass mainly consists of a main ply and a turn-up ply. The turn-up ply turns up around the wire ring, and the main ply turns up around the turn-up ply. At present, the wire ring mainly consists of three layers of three steel wires. After the tire is vulcanized in the curing bladder, the three layers of three steel wires are extremely easy to be extruded and deformed, causing the rubber compound at the bead part to flow towards the severely deformed section, resulting in uneven width at the bead part, and it is easy to have problems such as improper fitting and air leakage during assembly. Summary of the Invention
[0003] The purpose of the utility model is to solve the above technical problems, and provide a bias aviation tire. The structure of the wire ring is optimized. The wire ring includes at least four layers and each layer includes at least three steel wires. Compared with the structure of the three-layer three-steel-wire ring, it has strong anti-deformation ability, can significantly improve the uneven width distribution of the vulcanized bead, and reduce the risk of bead air leakage.
[0004] To achieve the above purpose, the utility model provides the following solution: The utility model discloses a bias aviation tire, which includes a tread, a carcass and a bead. The bead includes a bead core. The bead core includes a bead core wrapper and a wire ring wrapped inside the bead core wrapper. The wire ring includes a wire layer and a wire wrap cloth wrapped around the wire layer. The wire layer includes at least four layers of steel wires, and each layer of steel wires includes at least three steel wires. The bead core wrapper is bonded and fixed to the wire wrap cloth. The carcass includes a turn-up ply and at least one main ply. The end of the turn-up ply reversely wraps the bead core wrapper inside, and the end of the main ply semi-wraps the end of the turn-up ply forward. The end of the main ply exceeds the midline of the wire ring, and the end of the main ply exceeds the midline of the wire ring by 5-10 mm.
[0005] Preferably, the multi-layer steel wires of the wire layer are arranged in a rectangular array.
[0006] Preferably, the rubber coating thickness of each steel wire is 1.3 mm.
[0007] Preferably, the breaking strength of a single cord of the main ply ≥ 100 N.
[0008] Preferably, the positive ply is made of nylon cord.
[0009] The utility model has achieved the following technical effects compared with the prior art:
[0010] 1. For the bead core of the utility model, there are at least four layers and at least three steel wires in each layer. Compared with the bead core structure of three steel wires in three layers in the prior art, for the bias aircraft tire with the bead core designed in this form, the uneven width distribution of the vulcanized bead is significantly improved, and the risk of bead air leakage is reduced.
[0011] 2. For the bias aircraft tire of the utility model, compared with the bias aircraft tire in the prior art, for the bias aircraft tire with the bead core designed in this form, the uneven width distribution of the vulcanized bead can be significantly improved, and the risk of bead air leakage is reduced.
[0012] 3. In the bias aircraft tire of the utility model, the end of the positive ply exceeds the midline of the bead core by 5 - 10 mm, which improves the problem that the bead is not firm due to the too narrow wrapping range of the positive ply, resulting in adverse dynamic simulation tests, and the problem of hard edges is likely to occur when the wrapping range is too wide. Description of the Drawings
[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.
[0014] Figure 1 It is a cross-sectional view of a bias aircraft tire;
[0015] Figure 2 It is a cross-sectional view of a bias aircraft tire (with different hatching).
[0016] Description of the reference numerals: 1, tread; 2, positive ply; 3, turn-up ply; 4, bead core wrapper; 5, wire wrap; 6, steel wire; 7, bead wrapper. Detailed Embodiments
[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model. Embodiment
[0018] This embodiment provides a bead ring, as Figures 1 to 2 shown, which includes a steel wire layer and a steel wire wrapped cloth 5. The steel wire wrapped cloth 5 wraps the steel wire layer. The steel wire layer includes at least four layers of steel wires 6, and each layer of steel wires 6 includes at least three steel wires 6. Compared with the traditional bead ring with three layers and three steel wires, the bead ring composed of at least four layers and at least three steel wires 6 has strong anti-deformation ability, and can significantly improve the phenomenon that the bead width is uneven due to the extrusion of the water tire bead on the bottom of the bead during tire vulcanization. Subsequently, there will be no problem of improper fitting during assembly, which can effectively prevent tire air leakage problems, and then improve the safety and stability of the aircraft.
[0019] In this embodiment, as Figures 1 to 2 shown, the multi-layer steel wires 6 of the steel wire layer are arranged in a rectangular array, that is, at least four rows of steel wires 6 and at least three columns of steel wires 6. The row arrangement direction of the steel wires 6 can be understood as the direction from the bead wrapper 7 of the bead to the crown of the tread 1, that is, the layer arrangement direction of the steel wires 6 is from the bead wrapper 7 of the bead to the crown of the tread 1.
[0020] Furthermore, in this embodiment, as Figures 1 to 2 shown, the rubber coating thickness of each steel wire 6 is 1.3 mm. The bead ring has at least four layers and three steel wires, and each has a rubber coating thickness of 1.3 mm, which can not only ensure the strength of the bead but also stabilize the rigidity of the bead, as proven by a large amount of engineering experience. Embodiment
[0021] This embodiment provides a bias aviation tire, as Figures 1 to 2 shown, which includes a tread 1, a carcass, and a bead. The bead includes a bead core, and the bead core includes a bead core wrapper 4 and the bead ring in Embodiment 1. The bead core wrapper 4 wraps the bead ring, and the bead core wrapper 4 is adhesively fixed to the steel wire wrapped cloth 5. Compared with the bias aviation tire containing a bead ring with three layers and three steel wires, the bead ring of this bias aviation tire is composed of at least four layers and at least three steel wires 6, which has strong anti-deformation ability, and can significantly improve the phenomenon that the bead width is uneven due to the extrusion of the water tire bead on the bottom of the bead during tire vulcanization. Subsequently, there will be no problem of improper fitting during assembly, which can effectively prevent tire air leakage problems, and then improve the safety and stability of the aircraft.
[0022] Furthermore, in this embodiment, as Figures 1 to 2 shown, the carcass includes a main ply 2 and a turn-up ply 3. The main ply 2 has at least one layer. The end of the turn-up ply 3 reversely wraps the bead core wrapper 4, the end of the main ply 2 semi-wraps the end of the turn-up ply 3 forward, and the end of the main ply 2 exceeds the midline of the bead ring.
[0023] Furthermore, in this embodiment, as Figures 1 to 2As shown, the end of the main ply 2 extends 5 - 10 mm beyond the midline of the bead ring. If the main ply 2 is too narrow (the end of the main ply 2 extends less than 5 mm beyond the midline of the bead ring), it is likely to cause the bead to be insecure, which is not conducive to the dynamic simulation test. If the main ply 2 is too wide (the end of the main ply 2 extends more than 10 mm beyond the midline of the bead ring), hard edges are likely to appear at the bead. From the above, it can be seen that this bias aircraft tire mainly improves the main ply 2 and the bead ring structure disposed between the bead wrapper 7 and the turn-up ply 3, and the rest of the structure can adopt the normal structure design of a bias aircraft tire.
[0024] In this embodiment, as Figures 1 to 2 shown, the breaking strength of a single cord of the main ply 2 ≥ 100 N.
[0025] Furthermore, in this embodiment, as Figures 1 to 2 shown, the main ply 2 uses nylon cords. Of course, the above is the preferred method, which does not mean that only nylon cords can be selected, and other materials can also be selected according to needs.
[0026] Furthermore, in this embodiment, as Figures 1 to 2 shown, the thickness of the single-layer main ply 2 is 0.85 - 1.2 mm. Of course, the above is the preferred method, which does not mean that only the above thickness can be selected, and it can also be adjusted according to needs.
[0027] Furthermore, in this embodiment, as Figures 1 to 2 shown, the wire-wrapped fabric 5 and the bead core wrapper 4 generally use 1400 dtex / 2 fabric. Of course, the above is the preferred method, which does not mean that only 1400 dtex / 2 fabric can be selected, and it can also be adjusted according to needs.
[0028] In this embodiment, as Figures 1 to 2 shown, according to the above solution, a 260×115 - 85IV specification tire was prepared. After testing, it was found that the bead ring structure width of the bead ring solution with improved design was significantly improved, and the airtightness was good during tire mounting. For the bead ring with conventional design, the bead ring width was uneven at the end of vulcanization, and air leakage occurred during inflation.
[0029] In the present utility model, specific examples are used to elaborate the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model; at the same time, for those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present utility model.
Claims
1. A bias aircraft tire, comprising a tread, a carcass and a bead, wherein the bead comprises a bead core, characterized in that: The tire bead core includes a tire bead core wrap and a steel wire ring wrapped by the tire bead core wrap, the steel wire ring includes a steel wire layer and a steel wire wrapping cloth wrapped outside the steel wire layer, the steel wire layer includes at least four layers of steel wires, each layer of steel wire includes at least three steel wires, the tire bead core wrap is bonded and fixed to the steel wire wrapping cloth, the tire body includes a turn-up cord layer and at least one positive cord layer, the end of the turn-up cord layer reversely wraps the tire bead core wrap, the end of the positive cord layer positively half-wraps the end of the turn-up cord layer, the end of the positive cord layer exceeds the center line of the steel wire ring, and the end of the positive cord layer exceeds the center line of the steel wire ring by 5 to 10 mm.
2. The bias aircraft tire according to claim 1, characterized in that: The multiple layers of steel wires in the steel wire layer are arranged in a rectangular array.
3. A bias aircraft tire according to claim 1 or 2, characterized in that: The thickness of glue on each steel wire is 1.3mm.
4. The bias aircraft tire according to claim 1, characterized in that: The breaking strength of a single cord of the positive cord layer is ≥100N.
5. The bias aircraft tire according to claim 4, characterized in that: The front cord layer is made of nylon cords.