tire

Abstract

This utility model provides a tire with a tread pattern structure, including: multiple longitudinal grooves that divide at least a portion of the tread into two shoulder tread portions and multiple intermediate tread portions located between the two shoulder tread portions; anti-wear steel sheets, one end of which extends to a longitudinal groove adjacent to an intermediate tread portion, and the other end of which is spaced apart from the other side of the intermediate tread portion; and stepped corrugated steel sheets, with multiple stepped corrugated steel sheets provided on at least one intermediate tread portion, spaced apart along the extension direction of the intermediate tread portion, one end of each stepped corrugated steel sheet connected to an anti-wear steel sheet, and the other end of each stepped corrugated steel sheet extending to the other side of the intermediate tread portion. The technical solution provided by this utility model can solve the problem that existing all-steel radial trailer tires cannot simultaneously meet the requirements of wet skid resistance and long mileage.

Description

Technical Field

[0001] This utility model relates to the field of tire technology, and more specifically, to a tire. Background Technology

[0002] Currently, all-steel radial tires for trailers generally face a technical bottleneck in their design, making it difficult to balance wet grip with long mileage. Wet grip performance is crucial for improving tire safety in wet conditions, while long mileage performance directly affects tire lifespan and economic efficiency. To improve wet grip, traditional tire designs tend to use deep tread grooves and multi-groove structures to increase drainage channels and improve wet grip.

[0003] However, this design strategy often comes at the cost of sacrificing the rigidity of the tread blocks and the overall wear resistance of the tire, resulting in uneven wear and block breakage during long-term rolling wear, and thus premature scrapping, failing to meet the needs of long-distance towing. Utility Model Content

[0004] The main objective of this invention is to provide a tire that solves the problem that existing all-steel radial tires for trailers cannot simultaneously meet the requirements of wet skid resistance and long mileage.

[0005] To achieve the above objectives, this utility model provides a tire, wherein the tire tread is provided with a tread pattern, the tread pattern comprising:

[0006] Multiple longitudinal grooves, each of which extends circumferentially along the tire, are spaced apart along the width direction of the tire to divide at least a portion of the tread into two shoulder tread portions and multiple intermediate tread portions located between the two shoulder tread portions.

[0007] Anti-wear steel sheet, at least one side of the intermediate patterned portion is provided with a plurality of anti-wear steel sheets, the plurality of anti-wear steel sheets are spaced apart along the extension direction of the intermediate patterned portion, one end of each anti-wear steel sheet extends to the longitudinal groove adjacent to the intermediate patterned portion, and the other end is spaced apart from the other side of the intermediate patterned portion;

[0008] A stepped corrugated steel sheet is provided on at least one of the intermediate patterned portions, and the stepped corrugated steel sheets are spaced apart along the extension direction of the intermediate patterned portion. One end of each stepped corrugated steel sheet is connected to an anti-wear steel sheet, and the other end of each stepped corrugated steel sheet extends to the other side of the intermediate patterned portion, so that a circumferential discontinuous structure is formed on at least one of the intermediate patterned portions.

[0009] Furthermore, the width of the longitudinal groove on one side of the intermediate patterned portion is greater than the width of the longitudinal groove on the other side of the intermediate patterned portion, and multiple anti-wear steel plates are provided on both sides of the longitudinal groove on one side of the intermediate patterned portion.

[0010] Furthermore, multiple anti-wear steel plates are provided on both sides of the longitudinal groove located on one side of the intermediate patterned portion, respectively, and are arranged opposite each other; and / or,

[0011] The distance between two adjacent anti-wear steel plates is the longitudinal distance, and the ratio between two adjacent longitudinal distances is in the range of 1 to 1.2; and / or,

[0012] The spacing between two adjacent stepped corrugated steel sheets is greater than the spacing between two adjacent anti-wear steel sheets, and the number of anti-wear steel sheets between any two adjacent stepped corrugated steel sheets on the same intermediate pattern is equal.

[0013] Furthermore, on both sides of the longitudinal groove located on the other side of the intermediate patterned portion, there are multiple flow guide chamfers that communicate with the longitudinal groove and are spaced apart along the extension direction of the longitudinal groove.

[0014] Wherein, the plurality of flow-guiding chamfers on one side of the longitudinal groove located on the other side of the intermediate pattern portion are misaligned with the plurality of flow-guiding chamfers on the other side of the longitudinal groove located on the other side of the intermediate pattern portion; and / or,

[0015] The distance between any two of the plurality of guide angles on either side of the longitudinal groove located on the other side of the intermediate pattern portion forms a guide spacing, and the ratio between two adjacent guide spacings ranges from 1 to 1.2; and / or,

[0016] Along the width direction of the tire, the width of the guide angle ranges from 1.5mm to 4mm; along the circumferential extension direction of the longitudinal groove, the circumferential length of the guide angle ranges from 7mm to 11mm; along the radial direction of the tire, the depth of the guide angle ranges from 2mm to 4mm; the guide angle has a first guide side and a second guide side connected sequentially along the circumferential extension direction of the longitudinal groove, and the angle between at least one of the first guide side and the second guide side and the circumferential direction of the longitudinal groove ranges from 15° to 45°.

[0017] Further, the anti-wear steel sheet extends radially along the tire; along the radial direction of the tire, the ratio between the depth of the anti-wear steel sheet and the depth of the longitudinal groove passing through the central symmetry plane of the tire is greater than 0.5; along the circumferential direction of the tire, the thickness of the anti-wear steel sheet ranges from 0.5 mm to 0.8 mm; along the width direction of the tire, the width of the anti-wear steel sheet ranges from 2.5 mm to 5 mm; and / or,

[0018] The stepped corrugated steel sheet includes a first connecting segment, a second connecting segment, and a third connecting segment connected in sequence. The first connecting segment and the third connecting segment are respectively connected to both sides of the middle tread portion where the stepped corrugated steel sheet is located and extend along the width direction of the tire. The angle between the second connecting segment and the circumferential direction of the tire is in the range of 20° to 30°. Along the circumferential direction of the tire, the thickness of the stepped corrugated steel sheet is in the range of 0.8mm to 1.2mm. Along the radial direction of the tire, the depth of the stepped corrugated steel sheet is in the range of 1.5mm to 3mm.

[0019] Furthermore, the longitudinal groove includes two shoulder pattern grooves, two crown pattern grooves located between the two shoulder pattern grooves, and a central pattern groove located between the two crown pattern grooves. The plurality of intermediate pattern portions are all located between the two shoulder pattern grooves. The width of the shoulder pattern groove is greater than the width of the crown pattern groove, and the width of the central pattern groove is greater than the width of the crown pattern groove.

[0020] The central groove is provided with multiple anti-wear steel plates on both sides, the two shoulder grooves are provided with multiple anti-wear steel plates on both sides, the two crown grooves are provided with multiple guide chamfers on both sides, and each of the intermediate grooves is provided with multiple stepped corrugated steel plates, so that each of the intermediate grooves forms a circumferential discontinuous pattern structure.

[0021] Furthermore, the plurality of intermediate tread portions include two crown tread ribs and two center tread ribs, the two center tread ribs being located between the two crown tread ribs, the longitudinal grooves also including two circumferential annular grooves, and each of the tire shoulder tread portions is provided with one of the circumferential annular grooves to divide each of the tire shoulder tread portions into anti-shoulder wear tread ribs and shoulder tread ribs, the anti-shoulder wear tread ribs being located on the side of the shoulder tread ribs away from the crown tread ribs;

[0022] Wherein, the anti-shoulder abrasion patterned ribs and the shoulder patterned ribs are both circumferentially continuous ribs; and / or,

[0023] The outer peripheral surface of the anti-shoulder wear rib is set lower than the outer peripheral surface of the tire, and the distance between the outer peripheral surfaces of the anti-shoulder wear rib and the outer peripheral surface of the tire is <3mm.

[0024] Further, the ratio of the width of the shoulder patterned rib to the width of the central patterned rib is in the range of 1 to 1.4; the ratio of the width of the crown patterned rib to the width of the central patterned rib is in the range of 1 to 1.4; the ratio of the width of the anti-shoulder abrasion patterned rib to the width of the central patterned rib is less than or equal to 0.25; and / or,

[0025] The ratio between the width of the shoulder groove and the width of the central groove is in the range of 1 to 2; the ratio between the width of the crown groove and the width of the central groove is greater than 1 and less than or equal to 2; and / or,

[0026] The width of the circumferential annular groove is less than 2 mm, the depth of the central pattern groove is equal to the depth of the shoulder pattern groove, the ratio between the depth of the circumferential annular groove and the depth of the central pattern groove is less than or equal to 0.9, and the ratio between the depth of the crown pattern groove and the depth of the central pattern groove is less than or equal to 0.9.

[0027] Further, the ratio between the depth of the anti-abrasion steel plate on the side of the shoulder rib closest to the anti-shoulder abrasion rib and the groove depth of the central groove is greater than 0.5, and the ratio between the depth of the anti-abrasion steel plate on the side of the shoulder rib closest to the crown rib and the groove depth of the central groove is greater than 0.7; and / or,

[0028] The bottom of the circumferential annular groove is an arc, and the ratio of the diameter of the arc to the width of the circumferential annular groove is in the range of 1 to 1.4. The circumferential annular groove is a circumferential straight-line patterned groove, and the width of the circumferential annular groove is in the range of 1.25 mm to 1.75 mm.

[0029] Furthermore, the shoulder groove is a circumferential straight groove, and the draft angle of the shoulder groove is >25°; and / or,

[0030] The crown groove is a circumferential straight groove, and the draft angle of the crown groove is >10°; and / or,

[0031] The central pattern groove is a circumferential straight pattern groove, and the draft angle of the central pattern groove is >25°.

[0032] By applying the technical solution of this utility model, and through precise adjustments to the position, size, and connection relationship of the tread grooves, anti-wear steel sheets, stepped corrugated steel sheets, and guide angles, synergistic optimization of wet skid resistance and long-mileage performance is achieved, while also taking into account low rolling resistance. Specifically, the introduction of anti-wear steel sheets and stepped corrugated steel sheets enhances the tire's wear resistance and anti-wear performance; the design of the guide angles significantly improves wet grip; and the rational design of the tread grooves further optimizes drainage performance and the overall wear performance of the tire. Actual testing shows that this tire improves grip on wet roads by 20%, wear resistance by 15%, and rolling resistance by 10%, effectively extending tire life, reducing transportation costs, and providing a more reliable and economical tire option for safe and efficient transportation of trailers in complex road conditions, meeting the high performance standards required by the modern logistics industry. Attached Figure Description

[0033] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0034] Figure 1 A schematic diagram of a partial tread pattern structure of a tire provided according to an embodiment of the present invention is shown;

[0035] Figure 2 It shows Figure 1 Sectional view along line AA in the middle;

[0036] Figure 3 It shows Figure 1 BB-direction sectional view in the middle;

[0037] Figure 4 It shows Figure 1 The C-C' sectional view in the middle;

[0038] Figure 5 It shows Figure 1 DD section view.

[0039] The above figures include the following reference numerals:

[0040] 10. Longitudinal groove; 11. Shoulder pattern groove; 12. Crown pattern groove; 13. Central pattern groove; 14. Circumferential annular groove;

[0041] 20. Shoulder tread pattern; 21. Shoulder wear rib pattern; 22. Shoulder tread rib pattern;

[0042] 30. Central pattern section; 31. Crown pattern ribs; 32. Central pattern ribs;

[0043] 40. Anti-wear steel sheet;

[0044] 50. Stepped corrugated steel sheet; 51. First connecting section; 52. Second connecting section; 53. Third connecting section;

[0045] 60. Guide angle cut. Detailed Implementation

[0046] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0047] like Figures 1 to 5 As shown, an embodiment of this utility model provides a tire with a tread pattern structure, including: multiple longitudinal grooves 10, anti-wear steel sheets 40, and stepped corrugated steel sheets 50. Each longitudinal groove 10 extends along the circumference of the tire, and the multiple longitudinal grooves 10 are spaced apart along the width direction of the tire to divide at least a portion of the tread into two shoulder tread portions 20 and multiple intermediate tread portions 30 located between the two shoulder tread portions 20; the anti-wear steel sheets 40 are provided on at least one side of at least one intermediate tread portion 30, and the multiple anti-wear steel sheets 40 extend along the middle tread portion 30. The anti-wear steel sheets 40 are spaced apart in the extension direction. One end of each anti-wear steel sheet 40 extends to the longitudinal groove 10 adjacent to the intermediate patterned part 30, and the other end is spaced apart from the other side of the intermediate patterned part 30. There are multiple stepped corrugated steel sheets 50 on at least one intermediate patterned part 30. The multiple stepped corrugated steel sheets 50 are spaced apart along the extension direction of the intermediate patterned part 30. One end of each stepped corrugated steel sheet 50 is connected to an anti-wear steel sheet 40, and the other end of each stepped corrugated steel sheet 50 extends to the other side of the intermediate patterned part 30, so that a circumferential discontinuous structure is formed on at least one intermediate patterned part 30.

[0048] The technical solution provided in this embodiment includes a tire tread pattern structure comprising multiple longitudinal grooves 10, anti-wear steel strips 40, and stepped corrugated steel strips 50. These features, combined, effectively solve the technical problem of existing all-steel radial tires struggling to balance wet grip and long-mileage performance. Specifically, the multiple longitudinal grooves 10 are spaced apart along the tire's circumference and width, dividing the tread into a shoulder tread portion 20 and a central tread portion 30. This structure helps optimize drainage paths and enhances wet grip. The anti-wear steel strips 40, especially on at least one side of the central tread portion 30, reduce uneven wear of the tread blocks during rolling, preventing uneven wear and extending tire life. The introduction of the stepped corrugated steel strips 50 forms a circumferentially discontinuous structure on the central tread portion 30, which not only disperses tread stress and enhances tread block rigidity but also reduces rolling resistance when the tire contacts the ground through its unique shape design, while maintaining good wet grip performance. In summary, the technical solution of this embodiment, through the innovative combination of these key features, achieves an effective synergy between the tire's excellent grip performance in wet conditions and its high wear resistance in dry conditions. It overcomes the limitations of existing technologies where it is difficult to achieve both anti-skid performance and long-mileage performance, providing more balanced tire performance for trailers and other vehicles, and meeting the dual needs of modern transportation for tire safety and economy.

[0049] Specifically, the longitudinal groove 10 on one side of the central tread portion 30 has a wider groove width than the longitudinal groove 10 on the other side of the central tread portion 30. Multiple anti-wear steel plates 40 are provided on both sides of the longitudinal groove 10 on one side of the central tread portion 30. Thus, the longitudinal groove 10 on one side of the central tread portion 30 has a wider groove width, and multiple anti-wear steel plates 40 are arranged on both sides. This design considers the balance between the tire's drainage efficiency under wet conditions and the overall wear resistance of the tire. The wider groove width enhances the drainage capacity of the central tread portion 30, effectively breaking up the water film and improving the tire's grip and handling stability on wet and slippery roads. At the same time, the anti-wear steel plates 40 are designed to reduce uneven wear of the tread blocks by increasing the rigidity of the local structure, thereby extending the tire's service life. During tire rolling, these steel plates can distribute the pressure on the longitudinal tread grooves, preventing excessive wear at the groove edges, maintaining the stability of the groove depth, and ensuring continuous and efficient drainage capacity. Furthermore, the distribution of the anti-wear steel strips 40 can optimize the distribution of tire contact pressure, reduce uneven wear, and improve tire durability and economy. The implementation of this technical solution, through precise control of the groove width of the longitudinal grooves 10 and the layout of the anti-wear steel strips 40, achieves a synergistic improvement in wet performance and long-mileage durability, providing a new perspective and solution for tire design.

[0050] Furthermore, multiple anti-wear steel plates 40 are provided on both sides of the longitudinal groove 10 located on one side of the intermediate patterned part 30, and are arranged opposite each other in a one-to-one correspondence; and / or, the distance between two adjacent anti-wear steel plates 40 is the longitudinal distance, and the ratio between two adjacent longitudinal distances is in the range of 1 to 1.2; and / or, the distance between two adjacent stepped corrugated steel plates 50 is greater than the distance between two adjacent anti-wear steel plates 40, and the number of anti-wear steel plates 40 between any two adjacent stepped corrugated steel plates 50 on the same intermediate patterned part 30 is equal.

[0051] Multiple anti-wear steel plates 40 are provided on both sides of the longitudinal groove 10 located on one side of the central tread section 30. These anti-wear steel plates 40 are arranged in a one-to-one correspondence, effectively enhancing the tire's anti-wear performance. By providing additional support when the tread blocks contact the ground, they slow down the wear rate of the tread block edges. The longitudinal spacing ratio between two adjacent anti-wear steel plates 40 is set between 1 and 1.2. This non-equidistant pitch distribution helps to break the resonance frequency during tire rolling, reduce tire noise, and improve the overall tread block rigidity distribution, enabling the tire to maintain good stability and grip under different road conditions. In addition, the spacing between two adjacent stepped corrugated steel plates 50 is greater than the spacing between two adjacent anti-wear steel plates 40, and the number of anti-wear steel plates 40 between any two adjacent stepped corrugated steel plates 50 on the same central tread section 30 is equal. This aims to optimize stress distribution, improve drainage efficiency, and improve wet grip while ensuring tread block rigidity and reducing rolling resistance, thereby achieving a performance balance between wet skid resistance and long mileage. The synergistic effect of the stepped corrugated steel sheet 50 and the anti-uneven wear steel sheet 40 not only enhances the structural stability of the tire but also improves the geometry of the tread blocks, enabling the tire to more effectively break through the water film when driving on wet roads, thus improving safety. Simultaneously, it maintains low rolling resistance on dry roads, extending tire lifespan. This design, through precise control of the tread blocks, ultimately achieves the goal of improving the overall performance of the tire. The regular distribution of the stepped corrugated steel sheet 50 and the anti-uneven wear steel sheet 40 on the same tread section ensures uniform tread wear during long-term use, further improving tire mileage performance and economic efficiency.

[0052] Specifically, on both sides of the longitudinal groove 10 located on the other side of the intermediate patterned portion 30, multiple flow-guiding chamfers 60 are provided, communicating with the longitudinal groove 10 and spaced apart along the extension direction of the longitudinal groove 10; wherein, the multiple flow-guiding chamfers 60 on one side of the longitudinal groove 10 located on the other side of the intermediate patterned portion 30 are staggered with the multiple flow-guiding chamfers 60 on the other side of the longitudinal groove 10 located on the other side of the intermediate patterned portion 30; and / or, the distance between any two flow-guiding chamfers 60 on any side of the longitudinal groove 10 located on the other side of the intermediate patterned portion 30 forms a flow-guiding spacing, and adjacent flow-guiding chamfers 60 are spaced apart. The ratio between the spacings is in the range of 1 to 1.2; and / or, along the width direction of the tire, the width value of the guide angle 60 is in the range of 1.5 mm to 4 mm; along the circumferential extension direction of the longitudinal groove 10, the circumferential length value of the guide angle 60 is in the range of 7 mm to 11 mm; along the radial direction of the tire, the depth value of the guide angle 60 is in the range of 2 mm to 4 mm; the guide angle 60 has a first guide side and a second guide side connected sequentially along the circumferential extension direction of the longitudinal groove 10, and the angle between at least one of the first guide side and the second guide side and the circumferential direction of the longitudinal groove 10 is in the range of 15° to 45°.

[0053] Multiple guide angles 60 are provided on both sides of the longitudinal groove 10 located on the other side of the central tread pattern 30. These guide angles 60 are arranged at intervals along the extension direction of the longitudinal groove 10. By staggering the guide angles 60 on both sides, the tire can effectively break the water film when driving on wet ground, improve drainage efficiency, and thus enhance wet grip performance. The reasonable ratio range of 1 to 1.2 of the guide spacing ensures smooth water flow and avoids water stagnation and the reformation of the water film. In the tire width direction, the width of the guide angle 60 is controlled within the range of 1.5mm to 4mm. This size design maintains good drainage performance while avoiding an excessively large angle that could affect the overall rigidity of the tire. Along the circumferential extension direction of the longitudinal groove 10, the circumferential length of the guide angle 60 ranges from 7mm to 11mm. This increases the effective contact area between the angle and the ground, improving drainage efficiency. Along the radial direction of the tire, the depth of the guide angle 60 ranges from 2mm to 4mm. This depth selection helps to quickly drain accumulated water while maintaining tread block stability. The angle between the first and second guide sides of the guide angle 60 and the circumferential direction of the longitudinal groove 10 ranges from 15° to 45°. This angle design facilitates the formation of an oblique drainage channel, increasing the water discharge speed. Overall, this layout and size design of the guide angle 60 significantly improves the tire's anti-slip performance without sacrificing tire wear resistance and mileage performance, providing a more stable and safer driving experience on wet and slippery roads.

[0054] In other embodiments not shown in the figure, the guide angle 60 can also adopt a curved surface design that smoothly transitions with the longitudinal groove 10, further optimizing the water flow path, making drainage smoother, and reducing wind resistance and noise during tire operation, thereby improving ride comfort. In addition, by adjusting the horizontal movement of the upper mold plate to achieve progressive pressing, the guide angle 60 can also be ensured to be dimensionally accurate and structurally stable during the molding process, thus ensuring the tire's excellent performance under complex road conditions.

[0055] Specifically, the anti-wear steel sheet 40 extends radially along the tire; along the radial direction of the tire, the ratio between the depth of the anti-wear steel sheet 40 and the depth of the longitudinal groove 10 passing through the central symmetry plane of the tire is greater than 0.5; along the circumferential direction of the tire, the thickness of the anti-wear steel sheet 40 ranges from 0.5mm to 0.8mm; along the width direction of the tire, the width of the anti-wear steel sheet 40 ranges from 2.5mm to 5mm; and / or, the stepped corrugated steel sheet 50 includes a first connecting segment 51 connected in sequence. The second connecting section 52 and the third connecting section 53, the first connecting section 51 and the third connecting section 53 are respectively connected to both sides of the middle tread portion 30 where the stepped corrugated steel sheet 50 is located and extend along the width direction of the tire. The angle between the second connecting section 52 and the circumferential direction of the tire is in the range of 20° to 30°. Along the circumferential direction of the tire, the thickness of the stepped corrugated steel sheet 50 is in the range of 0.8mm to 1.2mm. Along the radial direction of the tire, the depth of the stepped corrugated steel sheet 50 is in the range of 1.5mm to 3mm.

[0056] With this configuration, the anti-wear steel sheet 40 extends radially along the tire, and its depth is more than 0.5 times the depth of the longitudinal groove 10 at the tire's center symmetry plane. This ensures that the steel sheet can function effectively across most of the tread depth, preventing excessive wear. The circumferential thickness of the steel sheet is set between 0.5mm and 0.8mm, and its width is between 2.5mm and 5mm. This size configuration ensures sufficient support rigidity without excessively increasing tire weight and rolling resistance. The stepped corrugated steel sheet 50 consists of a first connecting section 51, a second connecting section 52, and a third connecting section 53. The first and third connecting sections 53 are connected to both sides of the central tread portion 30 and extend along the tire width direction, while the angle formed between the second connecting section 52 and the tire circumference is between 20° and 30°. This geometric layout helps to distribute stress during tire operation, while improving tread stability and reducing deformation. The stepped corrugated steel sheet 50 has a circumferential thickness between 0.8 mm and 1.2 mm and a radial depth between 1.5 mm and 3 mm. This choice of thickness and depth allows the steel sheet to optimize rolling resistance while maintaining the integrity of the tire structure, thereby achieving an overall improvement in performance.

[0057] This embodiment, through precise control of the steel sheet size and layout, not only solves the problem of uneven wear that easily occurs in tires during long-mileage use, but also enhances the tire's anti-slip capability, especially its grip performance in wet environments, by introducing stepped corrugated steel sheets 50. Due to the rational design of the steel sheets, the tire's wear resistance is significantly enhanced while maintaining low rolling resistance, thanks to the selection of the steel sheet's depth, thickness, and width parameters, as well as its synergistic configuration with the tread grooves. The specific angle setting of the stepped corrugated steel sheets 50, combined with their unique thickness and depth range, effectively balances the tire's rigidity and flexibility, enabling the tire to exhibit excellent adaptability and durability on complex road surfaces, thus meeting the dual requirements of modern logistics trailers for tire safety and durability.

[0058] Specifically, the longitudinal groove 10 includes two shoulder grooves 11, two crown grooves 12 located between the two shoulder grooves 11, and a central groove 13 located between the two crown grooves 12. Multiple intermediate grooves 30 are located between the two shoulder grooves 11. The width of the shoulder grooves 11 is greater than the width of the crown grooves 12, and the width of the central groove 13 is greater than the width of the crown grooves 12. Multiple anti-wear steel plates 40 are provided on both sides of the central groove 13, multiple anti-wear steel plates 40 are provided on both sides of the two shoulder grooves 11, multiple flow guide chamfers 60 are provided on both sides of the two crown grooves 12, and multiple stepped corrugated steel plates 50 are provided on each intermediate groove 30, so that each intermediate groove 30 forms a circumferential discontinuous pattern structure.

[0059] In this embodiment, the longitudinal groove 10 comprises two shoulder grooves 11, two crown grooves 12, and a central groove 13, collectively dividing the tread into multiple intermediate tread sections 30, thus optimizing the tread pattern distribution. By designing differences in the width of the grooves at different locations—specifically, the shoulder grooves 11 are wider than the crown grooves 12, and the central groove 13 is also wider than the crown grooves 12—the rigidity distribution of each area of ​​the tread is effectively adjusted, enhancing the tire's directional stability and drainage performance. Furthermore, the stepped corrugated steel sheets 50 arranged on each intermediate tread section 30 form a circumferentially discontinuous tread structure. This innovative design effectively disperses tread stress, preventing uneven wear or damage to the tread blocks due to excessive stress concentration. Simultaneously, the corrugated pattern enhances tire grip and reduces rolling resistance, ensuring excellent tire performance during long-term operation. Anti-wear steel plates 40 are evenly distributed on both sides of the shoulder groove 11 and the center groove 13. Their special construction, with a depth exceeding the tire tread depth by a certain proportion, effectively strengthens the rigidity of the tread block edges, preventing edge wear and extending tire life. As for the guide angles 60 on both sides of the crown groove 12, their acute angle and position design promote rapid water drainage on wet roads, breaking the water film phenomenon, improving wet grip, and further ensuring driving safety. In summary, the synergistic effect of the various designs in this embodiment achieves synergistic optimization of tire anti-slip performance and long mileage, improving the tire's overall performance and meeting the high standards required for tires in modern logistics trailers.

[0060] Specifically, the multiple intermediate tread sections 30 include two crown tread ribs 31 and two center tread ribs 32, with the two center tread ribs 32 located between the two crown tread ribs 31. The longitudinal groove 10 also includes two circumferential annular grooves 14. Each shoulder tread section 20 is provided with a circumferential annular groove 14 to separate each shoulder tread section 20 into anti-shoulder wear tread ribs 21 and shoulder tread ribs 22. The anti-shoulder wear tread ribs 21 are located on the side of the shoulder tread ribs 22 away from the crown tread ribs 31. Both the anti-shoulder wear tread ribs 21 and the shoulder tread ribs 22 are circumferentially continuous ribs. And / or, the outer circumferential surface of the anti-shoulder wear tread ribs 21 is set lower than the outer circumferential surface of the tire, and the distance between the outer circumferential surface of the anti-shoulder wear ribs 21 and the outer circumferential surface of the tire is <3mm.

[0061] Specifically, two crown tread ribs 31 and two center tread ribs 32 are arranged alternately, while two circumferential grooves 14 are respectively placed between the anti-shoulder wear tread ribs 21 and the shoulder tread ribs 22, effectively separating the shoulder tread portion 20. It is worth noting that both the anti-shoulder wear tread ribs 21 and the shoulder tread ribs 22 adopt a continuous circumferential rib design, and the outer circumferential surface of the anti-shoulder wear ribs 21 is lower than the outer circumferential surface of the tire, with a spacing of less than 3mm. This unique tread design, through precise control of the contact characteristics between the tread blocks and the ground, and optimization of the tread's water flow lines, significantly improves the tire's wet grip and long-mileage performance. The anti-shoulder wear ribs 21 effectively reduce shoulder wear during steering or lateral forces. Simultaneously, the synergistic effect of the shoulder ribs 22 and crown tread ribs 31 ensures the tire's stability and grip under complex road conditions. The introduction of the circumferential groove 14 further optimizes the drainage path, enhancing tire safety and handling in wet conditions. Overall, this embodiment, through the combined design of the circumferential continuous ribs and the circumferential groove 14, and the careful balance between tread block rigidity and drainage capacity, achieves multiple goals: improving tire anti-skid performance, extending service life, and maintaining low rolling resistance, providing trailers with a safer and more durable driving experience in various weather conditions.

[0062] Specifically, the ratio of the width of the shoulder patterned rib 22 to the width of the central patterned rib 32 ranges from 1 to 1.4; the ratio of the width of the crown patterned rib 31 to the width of the central patterned rib 32 ranges from 1 to 1.4; the ratio of the width of the anti-shoulder abrasion patterned rib 21 to the width of the central patterned rib 32 is less than or equal to 0.25; and / or, the ratio between the groove width of the shoulder patterned groove 11 and the groove width of the central patterned groove 13 ranges from 1 to 2; the ratio of the width of the crown patterned rib 21 to the width of the central patterned rib 32 is less than or equal to 0.25; and / or, the ratio between the groove width of the shoulder patterned groove 11 and the groove width of the central patterned groove 13 ranges from 1 to 2. The ratio between the width of groove 12 and the width of central patterned groove 13 is greater than 1 and less than or equal to 2; and / or, the width of circumferential annular groove 14 is less than 2 mm, the depth of central patterned groove 13 is equal to the depth of shoulder patterned groove 11, the ratio between the depth TD1 of circumferential annular groove 14 and the depth of central patterned groove 13 is less than or equal to 0.9, and the ratio between the depth of crown patterned groove 12 and the depth of central patterned groove 13 is less than or equal to 0.9.

[0063] Specifically, the ratio of the width of the shoulder tread rib 22 to the width of the center tread rib 32 is controlled within the range of 1 to 1.4, and the width of the crown tread rib 31 also follows this ratio to match the center tread rib 32; the width of the anti-shoulder wear tread rib 21 is limited to no more than 0.25 times the width of the center tread rib 32. This design ensures the rigidity and stability of the crown and center tread blocks when the tire is rolling, while enhancing the tire's wear resistance by adjusting the width ratio of the shoulder tread blocks, especially in the shoulder area, effectively preventing excessive wear. In addition, the ratio of the groove width of the shoulder tread groove 11 to the groove width of the center tread groove 13 is maintained between 1 and 2, and the ratio of the groove width of the crown tread groove 12 to the groove width of the center tread groove 13 is within the range of 1 to 2. This arrangement helps maintain the tire's drainage performance and tread block stability on wet and slippery roads. The circumferential groove 14 has a width of less than 2mm. This narrow groove design reduces the possibility of stress concentration at the bottom of the groove, decreases the formation of cracks at the bottom of the groove, and thus protects adjacent tread ribs from damage. It is worth noting that the depth of the center tread groove 13 is equal to that of the shoulder tread groove 11, both being the full tread depth. The ratio of the depth of the circumferential groove 14 to the depth of the center tread groove 13 does not exceed 0.9, and the ratio of the depth of the crown tread groove 12 to the depth of the center tread groove 13 also does not exceed 0.9. This indicates that the tread depth of the crown and circumferential grooves 14 is slightly lower than that of the center and shoulder tread grooves 11, effectively improving the balance between wet grip and rolling resistance while maintaining long mileage. Through precise control of these details, the tire not only effectively drains water and improves safety on wet roads, but also ensures a reasonable distribution of tread block rigidity, reduces wear, extends service life, and maintains low rolling resistance, achieving synergistic optimization of anti-slip performance, long mileage, and low rolling resistance.

[0064] It should be noted that all numerical ranges involved in this application include two endpoint values. For example, if the ratio between the width of the shoulder groove 11 and the width of the center groove 13 is 1 to 2, then it includes cases with a ratio value of 1 and a ratio value of 2.

[0065] Specifically, the ratio between the depth of the anti-abrasion steel plate 40 on the side of the shoulder rib 22 near the anti-shoulder abrasion rib 21 and the groove depth of the central groove 13 is greater than 0.5; the ratio between the depth of the anti-abrasion steel plate 40 on the side of the shoulder rib 22 near the crown rib 31 and the groove depth of the central groove 13 is greater than 0.7; and / or, the bottom of the circumferential groove 14 is an arc, the ratio of the diameter of the arc to the width of the circumferential groove 14 is in the range of 1 to 1.4, the circumferential groove 14 is a circumferential straight groove, and the width of the circumferential groove 14 is in the range of 1.25 mm to 1.75 mm.

[0066] With this configuration, the ratio between the depth of the anti-wear steel plate 40 on the side of the shoulder tread rib 22 near the anti-shoulder wear tread rib 21 and the groove depth of the central tread groove 13 is greater than 0.5. This allows the anti-wear steel plate 40 to effectively reduce uneven wear in the shoulder area of ​​the tire without affecting drainage performance. Similarly, the ratio between the depth of the anti-wear steel plate 40 on the side of the shoulder tread rib 22 near the crown tread rib 31 and the groove depth of the central tread groove 13 is greater than 0.7, further enhancing the tire's anti-wear capability in the crown area and ensuring the overall durability of the tire. The bottom of the circumferential groove 14 is designed as an arc, with the ratio of the arc diameter to the groove width controlled within the range of 1 to 1.4. The width of the circumferential groove 14 is maintained between 1.25 mm and 1.75 mm. This design not only improves the stress distribution when the tire contacts the ground, preventing cracks caused by excessive stress concentration at the bottom of the groove, but also enhances the tire's self-cleaning performance through the arc-shaped groove bottom, effectively preventing gravel from getting stuck in the groove. Simultaneously, the narrow design of the circumferential groove 14 helps reduce rolling resistance and improve fuel economy. In summary, the tire structure in this embodiment optimizes the wear resistance and water drainage of various parts. By precisely controlling the depth ratio of each component and the arc-shaped groove bottom design, it achieves high-efficiency tire performance under complex road conditions, extends tire life, and reduces transportation costs.

[0067] Furthermore, the shoulder groove 11 is a circumferential straight groove with a draft angle > 25°; and / or, the crown groove 12 is a circumferential straight groove with a draft angle > 10°; and / or, the center groove 13 is a circumferential straight groove with a draft angle > 25°.

[0068] Specifically, the shoulder groove 11, crown groove 12, and center groove 13 are all designed as circumferential straight grooves, providing support for different areas of the tread blocks. The shoulder groove 11 has a draft angle greater than 25°, facilitating pull-out. This angle is also designed to optimize drainage performance, reduce wear on the tread ribs, and enhance the tire's shoulder area's wet grip and durability. The crown groove 12 has a draft angle greater than 10°, facilitating pull-out. It is designed to maintain good wet grip while reducing rolling resistance and improving overall tire efficiency. The center groove 13 also has a draft angle greater than 25°, facilitating pull-out. This design not only supports efficient drainage but also ensures stability and grip in the tire's center area, thereby improving vehicle handling and safety. The setting of these draft angles, combined with the design of the non-equidistant pitch micro anti-wear steel plates 40 of the tread ribs and the guide tangent angle 60, forms a comprehensive performance optimization system. By finely adjusting the size and angle of each component, a balance is achieved in optimizing water drainage, reducing rolling resistance, enhancing grip, and extending mileage under wet conditions. In other embodiments not shown, the draft angles of these grooves can be further adjusted to adapt to the needs of different usage conditions, ensuring the flexibility and adaptability of tire performance.

[0069] When the rubber compound is placed in the vulcanizing mold during tire manufacturing, the drive unit is activated, pushing the upper mold plate along a predetermined trajectory to the initial pressing position. At this position, the distance between the upper and lower mold plates is sufficient to accommodate the rubber compound, but they are not yet in close contact. As the drive unit continues to operate, the upper mold plate slowly descends to the first position. At this stage, the rubber compound begins to be initially compressed, and a preliminary outline is formed, but it is not yet fully shaped, especially in the tire shoulder area, where slight indentations may form due to uneven contact pressure distribution. Subsequently, the upper mold plate continues to move to the second position, gradually increasing the pressing force on the shoulder area until it is fully in contact with the lower mold plate. During this process, the inclined surface of the upper mold plate contacts the shoulder tread blocks, gradually eliminating the initially formed indentations and ensuring a smooth and uniform surface for the tread blocks. When the upper mold plate reaches the second position and is tightly in contact with the lower mold plate, the rubber compound is subjected to all-around pressure inside the mold. At this point, the mold is completely closed, and the rubber compound vulcanizes under high temperature and high pressure, forming the final tire product. After the vulcanization process is complete and the rubber compound hardens into a tire, the drive unit controls the upper mold plate to retract to a non-working position, the mold opens, and the tire is removed, completing one manufacturing cycle. Next, through automated equipment or manual operation, the mold is prepared again, filled with rubber compound, and the above process is repeated to continuously produce high-quality tire products. Throughout the manufacturing process, the design of the mold structure and movement path ensures that the tire has the required tread pattern and performance characteristics in different areas, meeting the requirements for long mileage, wet skid resistance, and low rolling resistance.

[0070] During tire use, the tire contacts the ground, and the tread pattern begins to function. The shoulder tread blocks, due to their anti-shoulder-wear ribs 21 and circumferential grooves 14, effectively disperse lateral forces during cornering, reducing shoulder wear. Simultaneously, the narrow circumferential grooves 14 reduce stress concentration at the groove bottom, lowering the risk of groove bottom cracks. When the tire rolls on a wet surface, the draft angle design of the center tread groove 13 and crown tread groove 12 promotes rapid water expulsion, breaking the water film and improving wet grip. Simultaneously, the synergistic effect of the anti-uneven wear steel sheet 40 and the stepped corrugated steel sheet 50 forms a microscopic mechanical structure inside the tire, effectively dispersing stress during contact with the ground, preventing excessive stress concentration on the tread blocks, and reducing uneven wear. As the tire rolls, the micro-anti-wear steel plates 40 on the outer and inner sides of the shoulder tread ribs 22 enhance the tire's wear resistance without significantly increasing rolling resistance. Meanwhile, the guide angle 60 design on the crown and center tread ribs 32, utilizing its angle with the circumferential direction and its small size, guides the water flow generated at the moment of tire contact with the ground to quickly drain away along the angle, further enhancing wet grip. These designs also function effectively on dry roads. Due to the discontinuous structure of the tread ribs, vibration and noise during tire-road contact are reduced. Simultaneously, the groove design between the tread blocks ensures tire heat dissipation and self-cleaning functions, supporting long-term tire operation. Throughout its service life, this tire structure design balances wet grip, wear resistance, and low rolling resistance, enabling it to exhibit excellent driving performance under various road conditions and meeting the high demands of modern logistics trailers.

[0071] like Figure 1As shown, the tire in this embodiment is suitable for a wet-slip, long-mileage trailer tire with an all-steel radial tread pattern. The tire tread pattern includes two circumferential round-head groove bottom ring grooves (corresponding to circumferential ring grooves), five circumferential main grooves, anti-wear steel sheet 40, stepped corrugated steel sheet 50, and guide angle 60. The two circumferential round-head groove bottom ring grooves and five circumferential main grooves divide the entire tread into eight parts: from the sides to the middle, they successively include two anti-shoulder wear tread ribs, round-head groove bottom ring grooves located on the two shoulders, two shoulder tread ribs 22, two shoulder tread grooves 11, two crown tread ribs 31, two crown tread grooves 12, two center tread ribs 32, and center tread groove 13. Among them, the width ratio of the shoulder patterned rib 22 and the crown patterned rib 31 to the width of the central patterned rib 32 is in the range of 1.0 to 1.4; the width of the shoulder anti-shoulder abrasion patterned rib A is ≤25% of the width of the central patterned rib 32D; the width ratio of the circumferential main groove is in the range of 1.0 to 2.0, specifically, the groove width of the central patterned groove 13 is equal to the groove width of the shoulder patterned groove 11, the groove width of the central patterned groove 13 is twice the groove width of the crown patterned groove 12, and the width of the bottom ring groove of the circumferential round head groove is <2mm; the depth of the central patterned groove 13 and the depth of the shoulder patterned groove 11 adopt the full pattern depth design, and the depth of the bottom ring groove of the round head groove and the depth of the crown patterned groove 12 are ≤90% of the full pattern depth.

[0072] Specifically, the anti-shoulder wear ribs located on both sides are circumferential continuous ribs, with their top surface slightly lower than the tire surface, and the range can be set to <3mm.

[0073] Specifically, five miniature anti-wear steel plates 40 with a thickness of 0.5-0.8 mm and a width of 2.5-5 mm are equidistantly arranged inside each pitch of the shoulder patterned ribs 22 on both sides, and are arranged perpendicular to the longitudinal patterned grooves.

[0074] The depth of the outer micro anti-wear steel plate 40 of the shoulder patterned rib 22 is greater than 50% of the full pattern depth, and the depth of the inner micro anti-wear steel plate 40 of the shoulder patterned rib 22 is greater than 70% of the full pattern depth.

[0075] Five miniature anti-wear steel plates 40 with a thickness of 0.5-0.8 mm and a width of 2.5-5 mm are equidistantly arranged inside each pitch of the outer side of the ribs 31 of the crown on both sides. They are arranged perpendicular to the longitudinal groove and have a depth of >70% of the full groove depth.

[0076] The two sides of the crown rib 31 are provided with stepped corrugated steel sheets 50 at intervals of five micro anti-wear steel sheets 40, which vary with the pitch. The two ends of the stepped corrugated steel sheets 50 are connected to the shoulder groove 11 and the crown groove 12, respectively; the stepped corrugated steel sheets 50 form an angle of 20°-30° with the circumferential direction, have a thickness of 0.8-1.2 mm, and a depth of 1.5-3.0 mm.

[0077] The inner sides of the two crown-shaped ribs 31 are provided with guide chamfers 60 according to the principle of non-equidistant spacing. Within one pitch, the ratio of the distance between the pitch dividing line and the guide chamfer 60, the guide chamfer 60 and the guide chamfer 60 is 1.2-1.5:1. The width of the guide chamfer 60 perpendicular to the tread groove direction ranges from 1.5-4mm, the circumferential length ranges from 7-11mm, the chamfer depth ranges from 2-4mm, and the acute angle between the two sides of the chamfer and the circumferential direction ranges from 15°-45°.

[0078] Five miniature anti-wear steel plates 40, with a thickness of 0.5-0.8 mm and a width of 2.5-5 mm, are equidistantly arranged inside each pitch of the inner side of the central patterned ribs 32 on both sides. They are arranged perpendicular to the longitudinal patterned grooves and have a depth greater than 70% of the full pattern depth.

[0079] On the inner side of the central patterned block ribs 32 on both sides, there are stepped corrugated steel sheets 50 with variable pitch every five micro anti-wear steel sheets 40. The two ends of the stepped corrugated steel sheets 50 are connected to the shoulder patterned groove 11 and the crown patterned groove 12 respectively; the stepped corrugated steel sheets 50 form an angle of 20°-30° with the circumferential direction, have a thickness of 0.8-1.2m, and a depth of 1.5-3.0m.

[0080] On both sides, the outer sides of the central patterned ribs 32 are provided with guide chamfers 60 according to the principle of non-equidistant spacing. Within one pitch, the ratio of the distance between the pitch dividing line and the guide chamfer 60, the guide chamfer 60 and the guide chamfer 60 is 1.2-1.5:1. The guide chamfer 60 has a width of 1.5-4mm perpendicular to the patterned groove direction, a circumferential length of <7-11mm, a chamfer depth of 2-4mm, and an acute angle of 15°-45° between the two sides of the chamfer and the circumferential direction.

[0081] As shown in the sectional view along AA, the rounded-head bottom annular grooves on both sides (corresponding to circumferential annular grooves 14) are circumferential straight-line patterned grooves. The width TW1 of the rounded-head bottom annular groove ranges from 1.25 to 1.75 mm, and the bottom is provided with a full arc fillet. The ratio of the diameter of the fillet to the width of the axial annular groove ranges from 1.0 to 1.4. The groove depth of the circumferential annular groove 14 is TD1, and the depth of the anti-wear steel plate 40 connected to the circumferential annular groove 14 is TD2.

[0082] As shown in the sectional view along BB, the shoulder grooves 11 on both sides are circumferential straight grooves. The groove depth TD3 of the shoulder groove 11 is the full groove depth, and the draft angle deg1 between the groove walls is greater than 25°. Shoulder ribs 22 and crown ribs 31 are respectively provided on both sides of the shoulder grooves 11. The depth of the anti-wear steel plate 40 connected to the shoulder grooves 11 is TD4.

[0083] As shown in the C-C' sectional view, the two crown grooves 12 are circumferential straight grooves. The depth TD5 of the crown groove 12 is ≤90% of the full pattern depth, and the draft angle deg2 between the groove walls is >10°. Two central pattern ribs 32 and two crown pattern ribs 31 are respectively provided on both sides of the crown groove 12. The groove depth of the crown groove 12 is TD5, and the width of the guide angle 60 is TW2.

[0084] As shown in the DD sectional view, the central patterned groove 13 is a circumferential straight-line patterned groove. The depth TD6 of the central patterned groove 13 is the full patterned depth, and the draft angle deg3 between the groove walls is greater than 25°. Central patterned ribs 32 are respectively provided on both sides of the central patterned groove 13. The groove depth of the central patterned groove 13 is TD6, and the depth of the anti-wear steel plate 40 connected to the central patterned groove 13 is TD7.

[0085] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0086] The anti-shoulder-wear ribs located on both sides have a continuous circumferential top surface that is lower than the tire surface. This design can effectively reduce the ground pressure on the shoulder areas on both sides when touching the ground and turning, and effectively improve the anti-shoulder-wear performance of the tread blocks on both sides.

[0087] The shoulder ribs on both sides have a continuous circumferential rib structure, which not only makes the tire look more robust, but also further increases the contact area, optimizes the contact pressure distribution, reduces abnormal wear of the tread blocks, and provides protection for long-distance driving.

[0088] The shoulder, crown, and center ribs are all equipped with micro anti-wear steel plates based on the principle of non-equidistant pitch, with a steel plate thickness of <1mm and a depth of >70% of the full tread depth (>50% of the full tread depth on the outer side of the shoulder). This design effectively increases the deformation of the rib edges during tire operation without significantly increasing rolling resistance, preventing uneven wear of the rib edges, extending the service life of the tread blocks, and indirectly improving the overall mileage performance of the tire.

[0089] The ribs on both sides of the crown are circumferentially discontinuous. This discontinuous structure reduces the overall rigidity of the tread and improves grip during driving.

[0090] The tread ribs on both sides and the center tread ribs are equipped with stepped corrugated steel strips with variable pitch (20°-30° angle with the circumference, thickness ≤1mm, depth <3mm) every five micro anti-wear steel strips. The stepped structure can disperse tread stress, enhance the rigidity of the tread blocks, and reduce deformation wear during long-term rolling. At the same time, the corrugation shape and the non-continuous rib design not only avoid the problem of insufficient grip of the fully continuous structure, but also control the increase of rolling resistance through a shallow depth of less than 3mm, thus achieving an effective balance of grip, low rolling resistance, and wear resistance.

[0091] The angled cuts on the shoulder and crown ribs on both sides effectively guide water out and break the water film effect. These guide cuts are located on the inner side of the ribs, with an angle ≥45° to the circumferential direction, a width <3mm perpendicular to the tread grooves, and a circumferential length <10mm. This angle and size design creates a directional flow channel: when the tire is driving on wet surfaces, water between the tread and the ground first enters the circumferential main grooves (crown grooves and center grooves), while "corner water" easily remains at the junction of the inner side of the ribs and the tread grooves (the main grooves cannot completely drain it). The notches formed by the guide cuts quickly guide this residual water into the main grooves, preventing the formation of a localized water film at the bottom of the ribs. Simultaneously, the slightly inclined surface of the cut accelerates water flow along the cut direction, reducing the time water remains between the ribs and the ground, significantly improving wet grip.

[0092] The guide angle also helps reduce noise and dissipate heat, improving the overall tire performance. The guide angle is set at non-equidistant intervals (spacing ratio 1.0 to 1.2), which breaks the continuous sound wave reflection path inside the rib, avoiding the formation of single-frequency resonance noise. Combined with the multi-type tread pitch design, it further reduces overall noise. The tiny grooves formed by the guide angle can increase the surface area of ​​the tread grooves, providing more channels for air to flow in the tread grooves, accelerating the dissipation of tread heat through the tread grooves and the cut angle grooves, and extending tire life.

[0093] The central patterned ribs on both sides are designed as circumferentially discontinuous ribs. The micro anti-wear steel plates, transversely curved steel plates, transversely curved grooves, and non-equally spaced chamfers on the outer side of the ribs serve the same purpose as the patterned ribs on the crown side.

[0094] The rounded bottom grooves on both shoulders are designed with circumferential straight patterned grooves. While improving drainage, the rounded bottom design can effectively reduce the stress on the bottom of the grooves, thereby preventing the tearing of the anti-shoulder abrasion patterned ribs on both shoulders.

[0095] The circumferential straight grooves on both sides of the shoulder, the crown, and the center improve heat dissipation and drainage capabilities. The draft angle design between the groove walls effectively enhances the stability of the patterned blocks, while also improving the anti-stone-clamping performance and self-cleaning performance of the grooves on both sides of the shoulder.

[0096] The multi-pattern pitch design, with each pitch width set according to a certain proportion and arranged irregularly in the circumference (the optimal solution is calculated through computer simulation), can effectively reduce pitch noise caused by pitch resonance, thereby reducing tire noise.

[0097] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0098] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0099] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms 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 on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0100] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0101] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0102] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A tire characterized by, The tire tread has a tread pattern, the tread pattern comprising: Multiple longitudinal grooves (10), each of the longitudinal grooves (10) extending along the circumference of the tire, and the multiple longitudinal grooves (10) being spaced apart along the width direction of the tire to divide at least a portion of the tread into two shoulder tread portions (20) and multiple intermediate tread portions (30) located between the two shoulder tread portions (20). Anti-wear steel sheet (40), at least one side of the intermediate patterned portion (30) is provided with a plurality of anti-wear steel sheets (40), the plurality of anti-wear steel sheets (40) are spaced apart along the extension direction of the intermediate patterned portion (30), one end of each anti-wear steel sheet (40) extends to the longitudinal groove (10) adjacent to the intermediate patterned portion (30), and the other end is spaced apart from the other side of the intermediate patterned portion (30); A stepped corrugated steel sheet (50) is provided on at least one of the intermediate patterned portions (30). The stepped corrugated steel sheets (50) are spaced apart along the extension direction of the intermediate patterned portion (30). One end of each stepped corrugated steel sheet (50) is connected to an anti-wear steel sheet (40). The other end of each stepped corrugated steel sheet (50) extends to the other side of the intermediate patterned portion (30), so that a circumferential discontinuous structure is formed on at least one of the intermediate patterned portions (30).

2. The tire according to claim 1, characterized in that, The width of the longitudinal groove (10) located on one side of the intermediate patterned part (30) is greater than the width of the longitudinal groove (10) located on the other side of the intermediate patterned part (30). Multiple anti-wear steel plates (40) are provided on both sides of the longitudinal groove (10) located on one side of the intermediate patterned part (30).

3. The tire according to claim 2, characterized in that, On both sides of the longitudinal groove (10) located on one side of the intermediate patterned portion (30), a plurality of anti-wear steel plates (40) are provided, corresponding to each other; and / or, The distance between two adjacent anti-wear steel plates (40) is the longitudinal distance, and the ratio between two adjacent longitudinal distances is in the range of 1 to 1.2; and / or, The spacing between two adjacent stepped corrugated steel sheets (50) is greater than the spacing between two adjacent anti-wear steel sheets (40), and the number of anti-wear steel sheets (40) between any two adjacent stepped corrugated steel sheets (50) on the same intermediate pattern part (30) is equal.

4. The tire according to claim 2, characterized in that, On both sides of the longitudinal groove (10) located on the other side of the middle patterned part (30), there are multiple flow guide chamfers (60) that communicate with the longitudinal groove (10) and are spaced apart along the extension direction of the longitudinal groove (10). Among them, the plurality of flow-guiding chamfers (60) on one side of the longitudinal groove (10) located on the other side of the intermediate patterned portion (30) are misaligned with the plurality of flow-guiding chamfers (60) on the other side of the longitudinal groove (10) located on the other side of the intermediate patterned portion (30); and / or, The spacing between any two of the plurality of guide angles (60) on any side of the longitudinal groove (10) located on the other side of the intermediate patterned portion (30) forms a guide spacing, and the ratio between two adjacent guide spacings ranges from 1 to 1.2; and / or, Along the width direction of the tire, the width of the guide angle (60) ranges from 1.5 mm to 4 mm; along the circumferential extension direction of the longitudinal groove (10), the circumferential length of the guide angle (60) ranges from 7 mm to 11 mm; along the radial direction of the tire, the depth of the guide angle (60) ranges from 2 mm to 4 mm; the guide angle (60) has a first guide side and a second guide side connected sequentially along the circumferential extension direction of the longitudinal groove (10), and the angle between at least one of the first guide side and the second guide side and the circumferential direction of the longitudinal groove (10) ranges from 15° to 45°.

5. The tire according to claim 1, characterized in that, The anti-wear steel sheet (40) extends radially along the tire; the ratio between the depth of the anti-wear steel sheet (40) and the depth of the longitudinal groove (10) passing through the central symmetry plane of the tire is greater than 0.5 along the radial direction of the tire; the thickness of the anti-wear steel sheet (40) ranges from 0.5 mm to 0.8 mm along the circumferential direction of the tire; the width of the anti-wear steel sheet (40) ranges from 2.5 mm to 5 mm along the width direction of the tire; and / or, The stepped corrugated steel sheet (50) includes a first connecting section (51), a second connecting section (52), and a third connecting section (53) connected in sequence. The first connecting section (51) and the third connecting section (53) are respectively connected to both sides of the middle tread portion (30) where the stepped corrugated steel sheet (50) is located and extend along the width direction of the tire. The angle between the second connecting section (52) and the circumferential direction of the tire is in the range of 20° to 30°. Along the circumferential direction of the tire, the thickness of the stepped corrugated steel sheet (50) is in the range of 0.8 mm to 1.2 mm. Along the radial direction of the tire, the depth of the stepped corrugated steel sheet (50) is in the range of 1.5 mm to 3 mm.

6. The tire according to claim 1, characterized in that, The longitudinal groove (10) includes two shoulder pattern grooves (11), two crown pattern grooves (12) located between the two shoulder pattern grooves (11), and a central pattern groove (13) located between the two crown pattern grooves (12). The plurality of intermediate pattern portions (30) are all located between the two shoulder pattern grooves (11). The width of the shoulder pattern groove (11) is greater than the width of the crown pattern groove (12), and the width of the central pattern groove (13) is greater than the width of the crown pattern groove (12). Among them, multiple anti-wear steel plates (40) are provided on both sides of the central pattern groove (13), multiple anti-wear steel plates (40) are provided on both sides of the two shoulder pattern grooves (11), multiple flow guide chamfers (60) are provided on both sides of the two crown pattern grooves (12), and multiple stepped corrugated steel plates (50) are provided on each of the intermediate pattern parts (30) so that each of the intermediate pattern parts (30) forms a circumferential discontinuous pattern structure.

7. The tire according to claim 6, characterized in that, The plurality of intermediate tread sections (30) include two crown tread ribs (31) and two center tread ribs (32), the two center tread ribs (32) being located between the two crown tread ribs (31), the longitudinal groove (10) further includes two circumferential grooves (14), and each of the shoulder tread sections (20) is provided with a circumferential groove (14) to separate each of the shoulder tread sections (20) into anti-shoulder wear tread ribs (21) and shoulder tread ribs (22), the anti-shoulder wear tread ribs (21) being located on the side of the shoulder tread ribs (22) away from the crown tread ribs (31); Wherein, the anti-shoulder abrasion patterned rib (21) and the shoulder patterned rib (22) are both circumferentially continuous ribs; and / or, The outer peripheral surface of the anti-shoulder wear pattern rib (21) is set lower than the outer peripheral surface of the tire, and the distance between the outer peripheral surface of the anti-shoulder wear pattern rib (21) and the outer peripheral surface of the tire is <3mm.

8. The tire according to claim 7, characterized in that, The ratio of the width of the shoulder patterned rib (22) to the width of the central patterned rib (32) ranges from 1 to 1.4; the ratio of the width of the crown patterned rib (31) to the width of the central patterned rib (32) ranges from 1 to 1.4; the ratio of the width of the anti-shoulder abrasion patterned rib (21) to the width of the central patterned rib (32) ranges from less than or equal to 0.25; and / or, The ratio between the width of the shoulder groove (11) and the width of the central groove (13) is in the range of 1 to 2; the ratio between the width of the crown groove (12) and the width of the central groove (13) is greater than 1 and less than or equal to 2; and / or, The width of the circumferential annular groove (14) is less than 2 mm, the groove depth of the central pattern groove (13) is equal to the groove depth of the shoulder pattern groove (11), the ratio between the groove depth of the circumferential annular groove (14) and the groove depth of the central pattern groove (13) is less than or equal to 0.9, and the ratio between the groove depth of the crown pattern groove (12) and the groove depth of the central pattern groove (13) is less than or equal to 0.

9.

9. The tire according to claim 7, characterized in that, The ratio between the depth of the anti-abrasion steel plate (40) on the side of the shoulder rib (22) near the anti-shoulder abrasion rib (21) and the groove depth of the central groove (13) is greater than 0.5; the ratio between the depth of the anti-abrasion steel plate (40) on the side of the shoulder rib (22) near the crown rib (31) and the groove depth of the central groove (13) is greater than 0.7; and / or, The bottom of the circumferential annular groove (14) is an arc, and the ratio of the diameter of the arc to the width of the circumferential annular groove (14) is in the range of 1 to 1.

4. The circumferential annular groove (14) is a circumferential straight-line patterned groove, and the width of the circumferential annular groove (14) is in the range of 1.25 mm to 1.75 mm.

10. The tire according to claim 7, characterized in that, The shoulder groove (11) is a circumferential straight groove, and the draft angle of the shoulder groove (11) is >25°; and / or, The crown groove (12) is a circumferential straight groove, and the draft angle of the crown groove (12) is >10°; and / or, The central pattern groove (13) is a circumferential straight pattern groove, and the draft angle of the central pattern groove (13) is >25°.

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