An aircraft tire having an asymmetric carcass structure
Patent Information
- Application Number
- CN202521914101.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-05
- Publication Date
- 2026-09-04
- Estimated Expiration
- 2035-09-05
AI Technical Summary
其中帘布贴合机与成型机更是焕然一新，帘布与胶片的供料方式已全面转型为汽车轮胎成型机所采用的储料小车加供料架模式，然而，受限于设备的复杂性和空间因素，帘布筒贴合机或成型机的供料架工位最多仅设6个
[0017]基于上述技术方案，本申请实施例至少具有以下有益效果：各层反包帘布从内层到外层依次贴合设置，各层反包帘布采用错位设置的方式，即各层反包帘布的宽度对齐，各层反包帘布的长度方向错位设置，这样在反包帘布的两端的形成阶梯式结构，其中反包帘布层一端的阶梯式结构能在正上方直接看到，即为明差级，而另一端的阶梯式结构在正上方看不到，即为暗差级，这种非对称结构设计能够在一台帘布贴合机上完成多层帘布的贴合作业，显著降低了生产成本和设备投入，从而降低制作成本，减少空间占用率。
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Figure CN224714734U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of tire technology, and in particular to an aircraft tire with an asymmetric structure of tire carcass plies. Background Technology
[0002] Due to their high internal pressure and high rated load, aircraft tires have high requirements for the number of layers in their carcass material. Bias-ply aircraft tires often require 2 to 20 layers of carcass material, while radial tires typically require 3 to 6 layers of cord. The cord bonding and forming machines have undergone significant upgrades, with the feeding method for cords and rubber sheets now entirely transformed to the material storage trolley and feeding rack mode used in automotive tire forming machines. However, due to the complexity of the equipment and space constraints, the cord bonding or forming machine can only have a maximum of 6 feeding rack stations. It is worth noting that most bias-ply aircraft tires have approximately 10 layers of carcass material. Combined with the layering of various rubber sheets, if the multi-layer cord bonding still uses the traditional symmetrical differential bonding method, 2 to 4 bonding machines would be needed to operate simultaneously for a single specification of aircraft tire. This undoubtedly increases the investment of manpower, financial resources, and space, resulting in increased production costs. Utility Model Content
[0003] This application aims to at least partially address one of the aforementioned technical problems in the prior art. To this end, embodiments of this application provide an aircraft tire with an asymmetrical carcass ply structure, which reduces production costs and equipment investment, decreases equipment space occupancy, and lowers manufacturing costs.
[0004] An aircraft tire with an asymmetric carcass ply structure includes:
[0005] The steel ring assembly includes two steel rings distributed on the left and right sides;
[0006] The reverse-wrapped fabric layer comprises multiple layers of reverse-wrapped fabric that are aligned and bonded together in sequence. Each layer of reverse-wrapped fabric has the same width, and adjacent layers of reverse-wrapped fabric are staggered so that the two ends of the reverse-wrapped fabric layer have a stepped structure, and the stepped structures at both ends of the reverse-wrapped fabric layer face opposite directions. The two ends of the reverse-wrapped fabric layer with the stepped structure are respectively wrapped around two adjacent steel rings, and each layer of reverse-wrapped fabric is connected to the steel rings by triangular adhesive.
[0007] The front covering fabric layer includes multiple layers of front covering fabric sequentially attached to the back covering fabric layer. The two ends of each layer of front covering fabric are staggered, and the two sides of the staggered front covering fabric layer respectively cover the two steel rings covered by the back covering fabric layer.
[0008] Tread compound is disposed on the top outer side of the positive wrapping fabric layer;
[0009] Sidewall rubber is disposed on the side of the positive plywood layer and connected to the tread rubber.
[0010] Multiple sets of steel ring assemblies and reverse-wrapped fabric layers are provided. Each set of steel ring assemblies is connected to a set of reverse-wrapped fabric layers. The reverse-wrapped fabric layers connected to each set of steel ring assemblies are sequentially attached. The two sides of the forward-wrapped fabric layers are respectively wrapped around the bottom of each steel ring covered by each set of reverse-wrapped fabric layers.
[0011] In optional or preferred embodiments, the outer wrapping fabric is provided with 2 to 20 layers.
[0012] In an optional or preferred embodiment, the outer covering fabric is provided with two layers.
[0013] In an optional or preferred embodiment, in each layer of the reverse-wrapped curtain, the reverse-wrapping height of the inner layer of the reverse-wrapped curtain on the left steel ring is less than its reverse-wrapping height on the right steel ring, and the reverse-wrapping height of the outer layer of the reverse-wrapped curtain on the left steel ring is greater than its reverse-wrapping height on the right steel ring.
[0014] In an optional or preferred embodiment, in each layer of the reverse-wrapped curtain, the reverse-wrapping height of the inner layer of the reverse-wrapped curtain on the left steel ring is greater than its reverse-wrapping height on the right steel ring, and the reverse-wrapping height of the outer layer of the reverse-wrapped curtain on the left steel ring is less than its reverse-wrapping height on the right steel ring.
[0015] In an optional or preferred embodiment, in each layer of the positive wrapping fabric, the positive wrapping width of the inner layer of the positive wrapping fabric at the bottom of the left steel ring is greater than its positive wrapping width at the bottom of the right steel ring, and the positive wrapping width of the outer layer of the positive wrapping fabric at the bottom of the left steel ring is less than its positive wrapping width at the bottom of the right steel ring.
[0016] In an optional or preferred embodiment, in each layer of the positive wrapping fabric, the positive wrapping width of the inner layer of the positive wrapping fabric at the bottom of the left steel ring is smaller than its positive wrapping width at the bottom of the right steel ring, and the positive wrapping width of the outer layer of the positive wrapping fabric at the bottom of the left steel ring is larger than its positive wrapping width at the bottom of the right steel ring.
[0017] Based on the above technical solution, the embodiments of this application have at least the following beneficial effects: each layer of reverse-wrapped curtain fabric is sequentially bonded from the inner layer to the outer layer, and each layer of reverse-wrapped curtain fabric is staggered, that is, the width of each layer of reverse-wrapped curtain fabric is aligned, and the length direction of each layer of reverse-wrapped curtain fabric is staggered. This forms a stepped structure at both ends of the reverse-wrapped curtain fabric. The stepped structure at one end of the reverse-wrapped curtain fabric layer can be directly seen from directly above, which is the light difference level, while the stepped structure at the other end cannot be seen from directly above, which is the dark difference level. This asymmetrical structural design can complete the bonding operation of multiple layers of curtain fabric on one curtain fabric bonding machine, which significantly reduces production costs and equipment investment, thereby reducing manufacturing costs and space occupancy. Attached Figure Description
[0018] The present application will be further described below with reference to the accompanying drawings and embodiments;
[0019] Figure 1 This is a cross-sectional view of an aircraft tire with an asymmetric structure of carcass ply provided in an embodiment of this application;
[0020] Figure 2 This is a cross-sectional view of an aircraft tire with an asymmetric structure of carcass ply provided in another embodiment of this application;
[0021] Figure 3 This is a cross-sectional view of an aircraft tire with an asymmetric structure of carcass ply provided in the third embodiment of this application;
[0022] Figure 4 yes Figure 2 , Figure 3 A schematic diagram of the misaligned distribution of each layer of reverse-wrapped fabric in the embodiment shown. Detailed Implementation
[0023] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.
[0024] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0026] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0027] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0028] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.
[0029] Due to their high internal pressure and high rated load, aircraft tires have high requirements for the number of layers in their carcass material. Bias-ply aircraft tires often require 2 to 20 layers of carcass material, while radial tires typically require 3 to 6 layers of cord. The cord bonding and forming machines have undergone significant upgrades, with the feeding method for cords and rubber sheets now entirely transformed to the material storage trolley and feeding rack mode used in automotive tire forming machines. However, due to the complexity of the equipment and space constraints, the cord bonding or forming machine can only have a maximum of 6 feeding rack stations. It is worth noting that most bias-ply aircraft tires have approximately 10 layers of carcass material. Combined with the layering of various rubber sheets, if the multi-layer cord bonding still uses the traditional symmetrical differential bonding method, 2 to 4 bonding machines would be needed to operate simultaneously for a single specification of aircraft tire. This undoubtedly increases the investment of manpower, financial resources, and space, resulting in increased production costs.
[0030] Reference Figures 1 to 4This application provides an aircraft tire with an asymmetrical carcass ply structure, including a steel rim assembly, a reverse ply 1, a forward ply 2, a tread compound 6, and a sidewall compound 7. The steel rim assembly includes two steel rims 4 distributed left and right. The reverse-wrapped ply layer 1 includes multiple layers of reverse-wrapped ply fabric that are aligned and pasted together in sequence. Each layer of reverse-wrapped ply fabric has the same width. Adjacent layers of reverse-wrapped ply fabric are staggered so that the two ends of the reverse-wrapped ply layer 1 have a stepped structure, and the stepped structure at both ends of the reverse-wrapped ply layer 1 faces opposite directions. The two ends of the reverse-wrapped ply layer 1 with the stepped structure are respectively wrapped around the two adjacent steel rims 4. Each layer of reverse-wrapped ply fabric is connected to the steel rim 4 by triangular adhesive 3. The forward-wrapped ply layer 2 includes multiple layers of forward-wrapped ply fabric that are sequentially pasted onto the reverse-wrapped ply layer 1. The two ends of each layer of forward-wrapped ply fabric are staggered. The two sides of the staggered arrangement of each layer of forward-wrapped ply fabric are respectively wrapped around the two steel rims 4 covered by the reverse-wrapped ply layer 1. The tread rubber 6 is located on the top outer side of the forward-wrapped ply layer 2. The sidewall rubber 7 is located on the side of the forward-wrapped ply layer 2 and connected to the tread rubber 6. The tread compound 6 is in direct contact with the runway, bearing the brunt of tire wear and providing grip. The sidewall compound 7 protects the tire sidewalls and transmits lateral forces.
[0031] Specifically, the reverse-wrapped curtain is a rectangular curtain, with each layer of reverse-wrapped curtain being sequentially bonded from the innermost layer to the outermost layer. The layers of reverse-wrapped curtain are staggered, meaning that the widths of each layer of reverse-wrapped curtain are aligned, but the lengths of each layer are staggered. This creates a stepped structure at both ends of the reverse-wrapped curtain. The stepped structure at one end of the reverse-wrapped curtain layer 1 is directly visible from above, which is the visible difference level, while the stepped structure at the other end is not visible from above, which is the invisible difference level. This asymmetrical structural design allows the bonding of multiple layers of curtain to be completed on a single curtain bonding machine, significantly reducing production costs and equipment investment, thereby reducing manufacturing costs and space occupancy.
[0032] like Figure 4 The embodiment shown has four layers of reverse-wrapped curtains, each with the same length, and the layers are staggered in the length direction, thus achieving a light contrast level at one end and a dark contrast level at the other end.
[0033] The stepped staggered arrangement of the reverse-wrapped ply 1 provides better stress dispersion, improving the tire's load-bearing capacity and durability; the asymmetrical design makes stress transition smoother, reduces stress abrupt change points, extends tire life, and maintains the advantage of a single machine completing multi-layer ply bonding, further reducing production costs.
[0034] In some embodiments, both the steel ring assembly and the reverse-wrapped fabric layer 1 are provided in one set, such as... Figure 1 In the embodiment shown, the steel ring assembly includes two steel rings 4 distributed on the left and right, and the reverse-wrapped fabric layer 1 is wrapped around the two steel rings 4.
[0035] In some embodiments, multiple sets of steel ring assemblies and reverse wrapping fabric layers 1 are provided. Each steel ring assembly is connected to a corresponding set of reverse wrapping fabric layers 1. The reverse wrapping fabric layers 1 connected to each steel ring assembly are sequentially attached, and the two sides of the forward wrapping fabric layer 2 are respectively wrapped under each steel ring 4 covered by each reverse wrapping fabric layer 1.
[0036] Specifically, such as Figure 2 In the illustrated embodiment, two steel ring assemblies are provided, for a total of four steel rings 4. Two sets of reverse-wrapped fabric layers 1 are also provided. Each set of reverse-wrapped fabric layers 1 has a stepped structure on both sides that wrap around two steel rings 4 respectively. Each set of reverse-wrapped fabric layers 1 is sequentially attached to form an inner reverse-wrapped fabric layer 1 and an outer reverse-wrapped fabric layer 1. The front-wrapped fabric layer 2 is attached to the outer reverse-wrapped fabric layer 1, and the two sides of the front-wrapped fabric layer 2 are respectively wrapped around the two steel rings 4 wrapped by the two sets of reverse-wrapped fabric layers 1.
[0037] Of course, in other embodiments, the steel ring assembly can also be provided in three sets, and similarly, the reverse-wrapped fabric layer 1 can also be provided in three sets, specifically, as follows: Figure 3 The example shown.
[0038] The reverse-wrapped curtain fabric can be installed in 2 to 20 layers. The specific number of layers can be determined according to the actual situation. For example... Figure 2 , Figure 3 In the illustrated embodiment, each reverse-wrapped curtain layer 1 includes four reverse-wrapped curtains: a first reverse-wrapped curtain 101, a second reverse-wrapped curtain 102, a third reverse-wrapped curtain 103, and a fourth reverse-wrapped curtain 104. The forward-wrapped curtain layer 2 includes two forward-wrapped curtains: a first forward-wrapped curtain 21 and a second forward-wrapped curtain 22. The staggered distribution of each reverse-wrapped curtain layer is as follows: Figure 4 As shown.
[0039] Similarly, the main curtain can be installed in 2 to 20 layers. For example... Figure 2 , Figure 3 In the embodiment shown, each positive wrapping fabric layer 2 includes an inner positive wrapping fabric 21 and an outer positive wrapping fabric 22.
[0040] In some embodiments, in each layer of the reverse-wrapped fabric, the reverse-wrapping height of the inner layer on the left steel ring 4 is less than its reverse-wrapping height on the right steel ring 4, and the reverse-wrapping height of the outer layer on the left steel ring 4 is greater than its reverse-wrapping height on the right steel ring 4. Through this mutually compensating asymmetrical design, the entire reverse-wrapped fabric 1 can achieve a more balanced stress distribution.
[0041] Specifically, such as Figure 1In the illustrated embodiment, among the layers of reverse-wrapped fabric, the reverse-wrapping height H11 of the inner layer of reverse-wrapped fabric 12 on the left steel ring 44 is greater than its reverse-wrapping height H12 on the right steel ring 44, while the reverse-wrapping height H21 of the outer layer of reverse-wrapped fabric 12 on the left steel ring 44 is less than its reverse-wrapping height H22 on the right steel ring 44. This mutually compensating asymmetrical design allows for a more balanced stress distribution across the entire reverse-wrapped fabric 1.
[0042] Of course, in other embodiments, the inner layer of the reverse-wrapped curtain 12 can be configured such that the reverse-wrapping height H11 on the left steel ring 44 is less than its reverse-wrapping height H12 on the right steel ring 44, while the outer layer of the reverse-wrapped curtain 12 has a greater reverse-wrapping height H21 on the left steel ring 44 than its reverse-wrapping height H22 on the right steel ring 44. This also achieves a mutually compensating asymmetrical design.
[0043] Furthermore, in each layer of the front-covering fabric, the width of the inner front-covering fabric at the bottom of the left steel ring 4 is greater than its width at the bottom of the right steel ring 4, while the width of the outer front-covering fabric at the bottom of the left steel ring 4 is less than its width at the bottom of the right steel ring 4.
[0044] Specifically, such as Figure 1 As shown, the inner layer of the front-covering fabric 21 has a front-covering width W11 at the bottom of the left steel ring 44 that is greater than its front-covering width W12 at the bottom of the right steel ring 44, while the outer layer of the front-covering fabric 22 has a front-covering width W21 at the bottom of the left steel ring 44 that is less than its front-covering width W22 at the bottom of the right steel ring 44.
[0045] Of course, in other embodiments, it can also be configured such that the width W11 of the inner layer front-covering fabric 21 at the bottom of the left steel ring 44 is smaller than its width W12 at the bottom of the right steel ring 44, while the width W21 of the outer layer front-covering fabric 22 at the bottom of the left steel ring 44 is larger than its width W22 at the bottom of the right steel ring 44.
[0046] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.
Claims
1. An aircraft tire with an asymmetrical structure of carcass ply fabric, characterized in that, include: The steel ring assembly includes two steel rings distributed on the left and right sides; The reverse-wrapped fabric layer comprises multiple layers of reverse-wrapped fabric that are aligned and bonded together in sequence. Each layer of reverse-wrapped fabric has the same width, and adjacent layers of reverse-wrapped fabric are staggered so that the two ends of the reverse-wrapped fabric layer have a stepped structure, and the stepped structures at both ends of the reverse-wrapped fabric layer face opposite directions. The two ends of the reverse-wrapped fabric layer with the stepped structure are respectively wrapped around two adjacent steel rings, and each layer of reverse-wrapped fabric is connected to the steel rings by triangular adhesive. The front covering fabric layer includes multiple layers of front covering fabric sequentially attached to the back covering fabric layer. The two ends of each layer of front covering fabric are staggered, and the two sides of the staggered front covering fabric layer respectively cover the two steel rings covered by the back covering fabric layer. Tread compound is disposed on the top outer side of the positive wrapping fabric layer; Sidewall rubber is disposed on the side of the positive plywood layer and connected to the tread rubber.
2. The aircraft tire with an asymmetric structure of carcass ply fabric according to claim 1, characterized in that: Multiple sets of steel ring assemblies and reverse-wrapped fabric layers are provided. Each set of steel ring assemblies is connected to a set of reverse-wrapped fabric layers. The reverse-wrapped fabric layers connected to each set of steel ring assemblies are sequentially attached. The two sides of the forward-wrapped fabric layers are respectively wrapped around the bottom of each steel ring covered by each set of reverse-wrapped fabric layers.
3. The aircraft tire with an asymmetric carcass ply structure according to claim 1, characterized in that: The reverse-wrapped curtain fabric has 2 to 20 layers.
4. The aircraft tire with an asymmetric carcass ply structure according to claim 1, characterized in that: The main curtain fabric has two layers.
5. The aircraft tire with an asymmetric structure of carcass ply fabric according to claim 3, characterized in that: In each layer of the reverse-wrapped curtain, the reverse-wrapping height of the inner layer on the left steel ring is less than its reverse-wrapping height on the right steel ring, and the reverse-wrapping height of the outer layer on the left steel ring is greater than its reverse-wrapping height on the right steel ring.
6. The aircraft tire with an asymmetric structure of carcass ply fabric according to claim 3, characterized in that: In each layer of the reverse-wrapped curtain, the reverse-wrapping height of the inner layer on the left steel ring is greater than its reverse-wrapping height on the right steel ring, and the reverse-wrapping height of the outer layer on the left steel ring is less than its reverse-wrapping height on the right steel ring.
7. The aircraft tire with an asymmetric carcass ply structure according to claim 3, characterized in that: In each layer of the positive wrapping fabric, the width of the inner layer of the positive wrapping fabric at the bottom of the left steel ring is greater than its width at the bottom of the right steel ring, and the width of the outer layer of the positive wrapping fabric at the bottom of the left steel ring is less than its width at the bottom of the right steel ring.
8. The aircraft tire with an asymmetric carcass ply structure according to claim 3, characterized in that: In each layer of the positive wrapping fabric, the width of the inner layer of the positive wrapping fabric at the bottom of the left steel ring is smaller than its width at the bottom of the right steel ring, and the width of the outer layer of the positive wrapping fabric at the bottom of the left steel ring is larger than its width at the bottom of the right steel ring.