Diagonal industrial tire
By adopting a bias industrial tire design in industrial vehicle tires, including a buffer layer and a ply, and setting buffer film and isolation film between them, the problem of heating and delamination of the tire under high torsion and large load is solved, and the tire performance is improved.
Patent Information
- Application Number
- CN202421895423.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-07
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-08-07
AI Technical Summary
Industrial vehicle tires are prone to heat up under high torsion and large loads, resulting in delamination and damage between the tread and the carcass.
The oblique industrial tire design is adopted, including a buffer layer and a ply layer. The buffer layer is composed of multiple buffer layers with narrow outside and wide inside. The crown angle of each buffer layer gradually increases from the inside to the outside, and buffer film and isolation film are provided between the buffer layer and the tread glue and between the inner and outer buffer layers.
Reduce the expansion of the tire crown, keep the outer edge of the tire stable, avoid local excessive stress and early damage to the ply, and improve the tire performance.
Smart Images
Figure CN222793139U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a bias industrial tire, belonging to the field of vehicle tires. Background Art
[0002] Industrial vehicle tires usually travel on harsh roads and have a high frequency of turning. For industrial vehicles with high torsion and heavy loads, such as forklift trucks, the tire body is prone to heat up due to the high torsion and heavy loads during driving, resulting in delamination and damage between the tread and the tire body. Summary of the invention
[0003] In view of the problems existing in the prior art, the utility model provides a bias industrial tire to improve the performance of the industrial tire.
[0004] In order to achieve the above-mentioned purpose, the utility model adopts a bias industrial tire, comprising:
[0005] the tread cap, including the tread compound;
[0006] The buffer layer includes a plurality of outer buffer layers and a plurality of inner buffer layers which are narrow outside and wide inside, wherein the crown angle of each buffer layer increases gradually from inside to outside, and a buffer rubber sheet is provided between the buffer layer and the tread rubber;
[0007] The cord layer is arranged in an oblique mesh shape, and an isolation film is arranged between the cord layer and the inner buffer layer, and between the inner buffer layer and the outer buffer layer.
[0008] In some embodiments, the buffer layer includes an outer buffer layer 1, an outer buffer layer 2, an inner buffer layer 1 and an inner buffer layer 2 arranged sequentially from the outside to the inside;
[0009] The isolation film is arranged between the second outer buffer layer and the inner buffer layer, and between the second inner buffer layer and the cord layer.
[0010] In some embodiments, the buffer rubber sheet is provided between the outer buffer layer 1 and the tread rubber, and the width of the buffer rubber sheet is 15-30 mm greater than the width of the outer buffer layer 2.
[0011] In some embodiments, an isolation film 2 is provided between the inner buffer layer 2 and the cord layer, the width of the isolation film 2 does not exceed the cross-sectional width, and the thickness of the isolation film 2 is 0.4-0.6 mm.
[0012] In some embodiments, an isolation film one is provided between the outer buffer layer two and the inner buffer layer one, and the width of the isolation film one is not less than the width of the inner buffer layer one.
[0013] In some embodiments, the width of the outer buffer layer is 70-80% of the running surface width, and both ends of the inner buffer layer extend to the connection between the shoulder tangent line and the anti-scratch line.
[0014] In some embodiments, the crown angle of the inner buffer layer is 52-55°, and the crown angle of the outer buffer layer is 58-65°.
[0015] In some embodiments, the buffer layer is made of nylon cord fabric, and the thickness of the glue coating on the nylon cord fabric is 1.3-1.4 mm.
[0016] In some embodiments, the cord layer is made of 4-6 layers of nylon cord.
[0017] Compared with the prior art, the bias industrial tire of the utility model adopts a design of progressively increasing the crown angle of the buffer layer, which reduces the expansion of the tire crown and maintains the stability of the outer edge size of the tire. Buffer rubber and isolation rubber are added on the upper and lower sides of the buffer layer to avoid excessive local stress and cause early damage to the cord layer, thereby improving the performance of the tire. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.
[0019] Figure 1 It is a structural schematic diagram of the utility model;
[0020] In the figure: 1. crown, 2. buffer film, 3. outer buffer layer 1, 4. outer buffer layer 2, 5. isolation film 1, 6. inner buffer layer 1, 7. inner buffer layer 2, 8. isolation film 2, 9. cord layer, a. anti-scratch line, b. shoulder tangent line, c. running surface width, d. section width. DETAILED DESCRIPTION
[0021] In order to make the objectives, technical solutions and advantages of the present invention more clear, the technical solutions of the present application are described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of the present application and the specific features in the embodiments are detailed descriptions of the technical solutions of the present application, rather than limitations on the technical solutions of the present application. In the absence of conflict, the embodiments of the present application and the technical features in the embodiments can be combined with each other.
[0022] In the description of the present invention, it is necessary to understand that the terms "inside", "outside", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the protection content of the present invention.
[0023] like Figure 1 As shown, a bias industrial tire includes tread rubber, grooves, buffer films, buffer layers, isolation films, cord layers 9, sidewall rubber, apex rubber, wire rings, etc. The tread rubber is located at the crown 1; the buffer layer includes multiple outer buffer layers and multiple inner buffer layers that are narrow outside and wide inside, and the crown angle of each buffer layer gradually increases from the inside to the outside, and a buffer film 2 is provided between the buffer layer and the tread rubber; the cord layers 9 are arranged in a bias mesh, and isolation films are provided between the cord layers 9 and the inner buffer layers, and between the inner buffer layers and the outer buffer layers. The purpose of the utility model is to improve the performance of industrial tires. The cord layers 9 of the carcass are arranged in a bias mesh, and the larger the crown angle (referring to the angle between the carcass cord and the vertical line of the crown centerline), the greater the stretch of the cord, the smaller the circumferential expansion of the carcass, which can increase the lateral rigidity of the tread, reduce the creep of the pattern blocks, and improve the wear resistance and impact resistance of the tire.
[0024] In some embodiments, Figure 1 As shown, the buffer layer includes an outer buffer layer 1 3, an outer buffer layer 2 4, an inner buffer layer 1 6 and an inner buffer layer 2 7 which are arranged from the outside to the inside in sequence; the isolation film is provided between the outer buffer layer 2 4 and the inner buffer layer 1 6, and between the inner buffer layer 2 7 and the cord layer 9. The tire carcass of this embodiment adopts a four-layer buffer, with a narrow outer and wide inner design. The buffer layer is a transition layer between the tread rubber and the cord layer 9. It is the part that bears the greatest shear stress during tire driving, and plays a role in buffering and dispersing stress to avoid excessive local stress and cause early damage to the cord layer.
[0025] In some embodiments, the buffer film 2 is provided between the outer buffer layer 1 3 and the tread rubber, and the width of the buffer film 2 is 15-30 mm greater than the width of the outer buffer layer 2 4. The buffer film 2 is added between the buffer layer and the tread rubber to reduce tire heat generation.
[0026] In some embodiments, an isolation film 28 is provided between the inner buffer layer 27 and the cord layer 9, the width of the isolation film 28 does not exceed the cross-sectional width d, and the thickness of the isolation film 28 is 0.4-0.6mm. An isolation film 15 is provided between the outer buffer layer 24 and the inner buffer layer 16, the width of the isolation film 15 is not less than the width of the inner buffer layer 16, and the quality risk of air leakage during tire use can be reduced. The utility model increases the thickness of the rubber between the cloth layers by providing isolation films between the inner and outer buffer layers and between the inner buffer layer and the cord layer 9. When the conventional crown buffer layer cord is subjected to pressure deformation and the tire is frequently twisted, the cloth layer stretches, the rubber between the cloth layers becomes thinner, and frictional heat is generated to cause delamination. The utility model compensates for the lack of rubber when the buffer layer cord stretches and deforms through the isolation film, thereby reducing frictional heat.
[0027] In some embodiments, the width of the outer buffer layer is 70-80% of the running surface width c, and the two ends of the inner buffer layer extend to the connection between the shoulder tangent line b and the anti-scratch line a. The buffer layer is located between the tread and the cord layer 9, and its function is to strengthen the connection between the two and reduce the impact and vibration of the road surface on the tire. The buffer layer is narrow on the outside, smaller than the running surface width c, which can reduce the shoulder thickness and generate heat during driving; the inner width reaches the sidewall anti-scratch line a to protect the shoulder tangent line b from impact. The end point position of each buffer layer avoids the shoulder stress concentration area.
[0028] In some embodiments, the crown angle of the inner buffer layer is 52-55°, and the crown angle of the outer buffer layer is 58-65°, which can reduce the expansion of the tire crown, maintain the stability of the outer edge size of the tire, and improve the strength and rigidity of the tire crown, increasing the wear resistance and impact resistance of the tire.
[0029] In some embodiments, the buffer layer is made of nylon cord fabric, and the thickness of the nylon cord fabric coated with glue is 1.3-1.4mm. When using nylon cord fabric, the wire diameter is 1.0mm, and after coating with glue, it is 1.3-1.4mm. If there is no glue between the cords, the friction between the cords will generate a lot of heat. After coating with glue, when the cords are deformed by force, they are not in direct contact, which reduces the heat generation.
[0030] In some embodiments, the cord layer 9 is made of 4-6 layers of nylon cord, which has high sidewall hardness and small deformation, so as to promote uniform pressure distribution of the tire on the ground and maintain excellent traction and torsional force.
[0031] The bias industrial tire of the utility model can be processed by adopting conventional technology and conventional raw materials.
[0032] The utility model bias industrial tire adopts a design of gradually increasing the crown angle of the buffer layer to reduce the expansion of the tire crown and maintain the stability of the outer edge size of the tire. Buffer rubber and isolation rubber are added on the upper and lower sides of the buffer layer to avoid excessive local stress and cause early damage to the cord layer, thereby improving the tire performance.
[0033] In addition, those skilled in the art will understand that, although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments also means being within the scope of protection of the present utility model and forming different embodiments. For example, in the above embodiments, those skilled in the art can use them in combination according to the known technical solutions and the technical problems to be solved by the present application.
Claims
1. A bias industrial tire, characterized in that: include: A tread crown (1), including tread rubber; The buffer layer comprises a plurality of outer buffer layers and a plurality of inner buffer layers which are narrow on the outside and wide on the inside, wherein the crown angle of each buffer layer gradually increases from the inside to the outside, and a buffer rubber sheet (2) is provided between the buffer layer and the tread rubber; The cord layer (9) is arranged in an oblique mesh shape, and an isolation film is provided between the cord layer (9) and the inner buffer layer, and between the inner buffer layer and the outer buffer layer.
2. The bias industrial tire according to claim 1, characterized in that: The buffer layer comprises an outer buffer layer 1 (3), an outer buffer layer 2 (4), an inner buffer layer 1 (6) and an inner buffer layer 2 (7) which are arranged in sequence from the outside to the inside; The isolation film is provided between the outer buffer layer 2 (4) and the inner buffer layer 1 (6), and between the inner buffer layer 2 (7) and the cord layer (9).
3. The bias industrial tire according to claim 2, characterized in that: The buffer rubber sheet (2) is provided between the outer buffer layer 1 (3) and the tread rubber, and the width of the buffer rubber sheet (2) is 15-30 mm greater than the width of the outer buffer layer 2 (4).
4. The bias industrial tire according to claim 2, characterized in that: An isolation film (8) is provided between the inner buffer layer (7) and the cord layer (9). The width of the isolation film (8) does not exceed the cross-sectional width (d), and the thickness of the isolation film (8) is 0.4-0.6 mm.
5. The bias industrial tire according to claim 2, characterized in that: An isolation film one (5) is provided between the outer buffer layer two (4) and the inner buffer layer one (6), and the width of the isolation film one (5) is not less than the width of the inner buffer layer one (6).
6. The bias industrial tire according to claim 1, characterized in that: The width of the outer buffer layer is 70-80% of the running surface width (c), and both ends of the inner buffer layer extend to the connection between the shoulder tangent line (b) and the anti-scratch line (a).
7. The bias industrial tire according to claim 1, characterized in that: The crown angle of the inner buffer layer is 52-55°, and the crown angle of the outer buffer layer is 58-65°.
8. The bias industrial tire according to claim 1, characterized in that: The buffer layer is made of nylon cord fabric, and the thickness of the glue coating on the nylon cord fabric is 1.3-1.4 mm.
9. The bias industrial tire according to claim 1, characterized in that: The cord layer (9) is made of 4-6 layers of nylon cord.