Explosion-proof reinforcing structure for high-internal-pressure tire
By setting a shoulder reinforcement layer between the carcass and the transition layer of the high internal pressure tire, including a nylon layer and a buffer film, the problem of tire blowouts easily when the inflation pressure is high is solved, and the tire shoulder rigidity and vertical stiffness are improved, which significantly reduces the tire blowout rate and glue peeling frequency.
Patent Information
- Application Number
- CN202422040691.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-22
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-08-22
AI Technical Summary
Existing high internal pressure tires are prone to shoulder and sidewall bursts when the inflation pressure is high, especially on uneven roads in the mine, resulting in glue peeling on the surface of the reverse carcass or the main carcass.
An explosion-proof reinforcement structure for high internal pressure tires is designed. By setting a shoulder reinforcement layer between the carcass and the transition layer, including several layers of nylon layers and buffer film, the tire shoulder rigidity and vertical stiffness are improved, and the speed of the sidewall crack to the airtight layer is delayed.
It effectively reduces the shoulder and sidewall tire burst rate caused by uneven road surfaces of the mine when the inflation pressure of high internal pressure is ≥900kPa, and reduces the frequency of glue peeling on the reverse carcass or main carcass surface.
Smart Images
Figure CN223045495U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of tires, in particular to an explosion-proof reinforcement structure for high-internal-pressure tires. Background Art
[0002] With the development of economy and society, the demand for mineral resources is becoming increasingly strong, which requires continuous improvement of labor productivity and reduction of the operation cost of mines. When the tire specifications of domestic mine mainframe factories are relatively small, they continuously improve the load capacity of vehicles to reduce the operation cost of mines and improve the mining and transportation efficiency. In order to cope with the increase in vehicle load, strict requirements are put forward for the bearing capacity of tires. In order to meet the requirements of heavy loads when the tire specifications remain unchanged or are relatively small, major tire companies improve the load capacity of tires by increasing the internal pressure.
[0003] At present, engineering radial tires use a layer of steel wire as the carcass skeleton material. The adhesion performance between the upper layer of the carcass rubber and the carcass will decrease with the increase of use time, and small cracks may occur when the tire impacts with the ground protrusions. Generally, the maximum inflation pressure of engineering radial tires is up to 900 kPa. For the heavy-load field, the tire inflation pressure will increase. When it exceeds 900 kPa, the stress of the internal skeleton material of the tire will increase significantly. When the inflation pressure reaches 1000 kPa, when the tire encounters road surface protrusions, its risk of bursting will increase significantly. Especially for tubeless tires, due to the lack of the buffering of the inner tube, it is easier to have bursting at the shoulder and sidewall of the tire, and the characteristic of this kind of bursting is that the carcass of the reverse wrapping or the attached rubber on the surface of the main carcass peels off. Therefore, in view of this problem, it is necessary to design an explosion-proof high-internal-pressure tire to reduce the occurrence of peeling of the carcass of the reverse wrapping or the attached rubber on the surface of the main carcass. Summary of the Utility Model
[0004] The technical problem to be solved by the utility model is: overcoming the deficiencies of the prior art, providing an explosion-proof reinforcement structure for high-internal-pressure tires. Through the shoulder reinforcement layer, the rigidity and vertical stiffness of the tire shoulder can be improved, and after the sidewall is cut, the speed of the sidewall crack extending to the airtight layer can be delayed, thereby reducing the occurrence of peeling of the carcass of the reverse wrapping or the attached rubber on the surface of the main carcass. When the tire inflation pressure ≥ 900 kPa (cold air pressure), the bursting rate of the tire shoulder and sidewall caused by the uneven road surface in the mine will increase significantly.
[0005] The technical solution of the utility model is as follows:
[0006] An explosion-proof reinforcement structure for high-internal-pressure tires, including a shoulder reinforcement layer arranged between the carcass and the transition layer. The shoulder reinforcement layer includes several layers of nylon layers. The upper endpoint of the shoulder reinforcement layer is located at the 1 / 4 crown of the tire, and the lower endpoint is located below the endpoint of the reverse wrapping carcass; a buffer rubber sheet is arranged between adjacent nylon layers.
[0007] Preferably, with the carcass angle being 90°, the angle of the shoulder reinforcing layer is 45° - 135°.
[0008] Preferably, all the nylon layers and the buffer rubber sheets have the same width.
[0009] Preferably, all the nylon layers and the buffer rubber sheets are arranged in a staggered manner up and down in sequence, and the lower end point of the inner nylon layer is higher than that of the outer nylon layer.
[0010] Preferably, both ends of all the nylon layers and the buffer rubber sheets are aligned.
[0011] Preferably, the shoulder reinforcing layer includes 2 - 4 nylon layers.
[0012] Preferably, the nylon diameter in the nylon layer is 0.53 - 0.74 mm.
[0013] Preferably, the thickness of the buffer rubber sheet is 0.5 - 2 mm.
[0014] Preferably, the nylon layer is made of nylon 6 or nylon 66.
[0015] Preferably, the buffer rubber sheet is made of the same material as the transition layer.
[0016] Compared with the prior art, the present utility model has the following beneficial effects:
[0017] The explosion-proof reinforcement structure for high-internal-pressure tires of the present utility model can improve the shoulder rigidity and vertical stiffness of the tire through the shoulder reinforcing layer, and can also delay the speed of the sidewall crack to the airtight layer after the sidewall is cut, thereby reducing the occurrence of the stripping of the attached rubber on the reversed carcass or the surface of the main carcass. When the tire inflation pressure ≥ 900 kPa (cold air pressure), it will significantly increase the explosion rate of the tire shoulder and sidewall caused by the uneven road surface in the mine. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 is a schematic structural diagram of the explosion-proof reinforcement structure for high-internal-pressure tires of the present utility model.
[0019] Figure 2 is Figure 1 a partial enlarged view at A.
[0020] Figure 3 is Figure 1 a schematic diagram of the staggered nylon layers and buffer rubber sheets in.
[0021] Figure 4 is a schematic diagram of the nylon layers and buffer rubber sheets with both ends aligned in the present utility model.
[0022] In the figure, 1 is the carcass; 2 is the transition layer; 3 is the shoulder reinforcement layer; 301 is the nylon layer; 302 is the buffer rubber sheet; 4 is the crown; 5 is the turned-up carcass. Detailed implementation mode
[0023] In order to enable those skilled in the art to better understand the technical solutions in the present utility model, the following will clearly and completely describe the technical solutions of the present utility model in conjunction with the embodiments of the present utility model.
[0024] Embodiment 1
[0025] As Figure 1-2 shown, this embodiment provides an explosion-proof reinforcement structure for a high internal pressure tire, including a shoulder reinforcement layer 3 arranged between the carcass 1 and the transition layer 2. The shoulder reinforcement layer 3 includes 2 nylon layers 301, and the material of the nylon layer 301 can be selected from nylon 6 or nylon 66. At the same time, a buffer rubber sheet 302 is arranged between the 2 nylon layers 301, and the buffer rubber sheet 302 can be made of the same material as the transition layer 2. The widths of the 2 nylon layers 301 and the buffer rubber sheet 302 are the same, and the three-layer structure is arranged in a staggered manner in turn (as Figure 3 shown), that is, the lower end point of the inner nylon layer 301 is higher than the lower end point of the outer nylon layer 301, and as Figure 1 shown, the upper end point of the inner nylon layer 301 is located at 1 / 4 of the crown 4, and the lower end point of the outer nylon layer 301 is located below the end point of the turned-up carcass 5; of course, the three-layer structure can also be arranged with both ends aligned (as Figure 4 shown). Among them, the nylon diameter in the nylon layer 301 is 0.53 - 0.74 mm, and the thickness of the buffer rubber sheet 302 is 0.5 - 2 mm. In addition, taking the angle of the carcass 1 as 90°, the angle of the shoulder reinforcement layer 3 is 45° - 135°, and it is arranged crosswise with the tire tube. The nylon layer and the carcass form a cross-shaped network structure, and the strength is much higher than that of the non-network structure, which can effectively reduce the probability of tire blowout and the gas rushing out during tire blowout. If the angle of the shoulder reinforcement layer 3 is too large or too small, it will cause difficulties in tire molding.
[0026] The shoulder reinforcement layer 3 of this embodiment can improve the rigidity of the tire shoulder and the vertical stiffness, and can also delay the speed of the sidewall crack to the airtight layer after the sidewall is cut. When the tire inflation pressure ≥ 900 kPa (cold air pressure), it will significantly increase the tire shoulder and sidewall blowout rate caused by the uneven road surface in the mine. In addition, the buffer rubber sheet 302 between the nylon layers 301 can effectively reduce the frictional heat generation between the nylon layers 301.
Claims
1. An explosion-proof reinforcement structure for high internal pressure tires, characterized in that: The invention comprises a shoulder reinforcement layer (3) arranged between a tire body (1) and a transition layer (2), the shoulder reinforcement layer (3) comprising a plurality of nylon layers (301), the upper end point of the shoulder reinforcement layer (3) being located at the 1 / 4 tire crown (4), and the lower end point being located below the end point of the turned-up tire body (5); and a buffer film (302) being arranged between adjacent nylon layers (301).
2. The explosion-proof reinforcement structure for high internal pressure tire according to claim 1, characterized in that: Taking the tire body (1) angle as 90°, the tire shoulder reinforcement layer (3) angle is 45°-135°.
3. The explosion-proof reinforcement structure for high internal pressure tire according to claim 1, characterized in that: All nylon layers (301) and buffer films (302) have the same width.
4. The explosion-proof reinforcement structure for high internal pressure tire according to claim 3, characterized in that: All nylon layers (301) and buffer films (302) are sequentially arranged in an up-and-down staggered manner, and the lower end point of the inner nylon layer (301) is higher than the lower end point of the outer nylon layer (301).
5. The explosion-proof reinforcement structure for high internal pressure tire according to claim 3, characterized in that: All nylon layers (301) and buffer films (302) are arranged with both ends aligned.
6. The explosion-proof reinforcement structure for high internal pressure tire according to claim 1, characterized in that: The shoulder reinforcement layer (3) comprises 2 to 4 nylon layers (301).
7. The explosion-proof reinforcement structure for high internal pressure tire according to claim 1, characterized in that: The diameter of the nylon in the nylon layer (301) is 0.53-0.74 mm.
8. The explosion-proof reinforcement structure for high internal pressure tire according to claim 1, characterized in that: The thickness of the buffer film (302) is 0.5-2 mm.
9. The explosion-proof reinforcement structure for a high internal pressure tire according to claim 1, characterized in that: The nylon layer (301) is made of nylon 6 or nylon 66.
10. The explosion-proof reinforcement structure for a high internal pressure tire according to claim 1, characterized in that: The buffer film (302) is made of the same material as the transition layer (2).