Radial tire tread structure

Abstract

The invention discloses a radial tire tread structure, which comprises a Z-shaped central main groove in the center of the tread, and second main grooves located on both sides of the central main groove; the central main groove and the second main groove are connected by inclined The side pattern grooves form side pattern blocks at intervals; the lateral side sipe grooves are formed at the inner and outer folds of the side pattern blocks, and trapezoidal small depressions are provided at the outer folds of the side pattern blocks; Between the main groove and the sidewall of the tire, the shoulder pattern blocks are formed by intervals between the laterally arranged shoulder grooves; the land ratio of the central part of the tread is at least 20% greater than the land ratio of the shoulder part. Due to the large land ratio and strong rigidity of the central part of the pattern tread, it can prevent the early blockage of the tire and ensure the service life of the tire; the land ratio of the shoulder part is low and the rigidity is weak, ensuring the wear performance of the pattern. The water drainage and mud discharge performance of the pattern is improved, so the invention effectively improves the anti-slip effect on the muddy road surface, and the effect is remarkable.

Description

technical field [0001] The invention relates to a radial tire tread structure, in particular to a tread pattern structure. Background technique [0002] Existing driving roads are various, including flat roads, gravel roads, muddy roads, etc., and different pattern designs can adapt to different road surfaces, and on this basis, they can exert the greatest effect. For example, on flat pavement, the basic traction performance and wetland performance of the pattern should be considered, while on gravel pavement, the anti-stone trapping performance of the pattern is high, and small bosses of a certain height are often set at the bottom of the pattern groove. For muddy pavement , it will also have higher requirements for the drainage and mud discharge of the pattern. Therefore, for tires used on different road surfaces, the pattern should have different performance emphases. [0003] As a means of transportation, light trucks often drive on some urban-rural combined roads, whi...

AI Technical Summary

Problems solved by technology

[0003] As a means of transportation, light trucks often drive on some urban-rural combined roads, which include not only flat roads, but also muddy or gravel roads to varying degrees. Generally, truck tires drive on such urban-rural combined roads. When encountering muddy roads , the muddy water is often not discharged in time, especially in extremely muddy rainy days, the tires are often prone to slippage when driving, and if the design focuses on the mud drainage performance of the tire tread, it is usually adopted to increase the width of the groove or increase the groove Due to the design of the quantity, the tire tread tends to wear quickly, and sometimes even the overall rigidity of the pattern block decreases due to too many grooves, and local abnormal wear occurs, which may easily cause early bad use and affect the service life of the tire

For such urban-rural combined road sections, it is often difficult to balance drainage and mud discharge performance and tread wear performance at the same time

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