Pneumatic radial tire capable of improving endurance

Abstract

The invention provides a pneumatic radial tire capable of improving endurance. The pneumatic radial tire comprises a tire body, wherein the tire body is divided into a tire body layer, a tire shoulder part, a tire side part and a tire ring part; the tire body layer comprises a reverse covering layer and a front covering layer from inside to outside around a tire ring core; the tire ring core and triangular glue are arranged in the reverse covering layer; seam allowance adhesive tape is arranged at the axial outer side of the tire of the front covering layer; a tie side-adhesion reinforcing adhesive tape is arranged from a position which accounts for 30%-34% of tire section height to a position which accounts for 4%-7% of the section height of the tire along the reverse covering layer between the tire axial outer side of the reverse covering layer and the tire axial inner side of the seam allowance adhesive tape; and the side of a belted layer is equipped with side adhesive for preventing the belted layer from crawling. According to the pneumatic radial tire provided by the invention, on the basis of keeping the formula and the patterns unchanged and guaranteeing excellent bearing performance, the endurance of the tire is improved by additionally arranging the belted layer side adhesive, the front covering structure and the tire-side adhesion reinforcing adhesive tape, and limiting the dimensions and the relative positions of parts.

Description

technical field [0001] The invention relates to the technical field of tires, in particular to a pneumatic radial tire for improving endurance performance. Background technique [0002] Endurance performance is an important indicator of pneumatic tires, especially for commercial trucks. Especially for tires in the domestic market, overloading and long-term driving are more serious. The current regulatory experiments can no longer meet the existing market demand, so more stringent technical requirements have been put forward, that is, overloading and long-term durability tests. The experiment time is increased from 34h (regulation value) in current regulations to 300h. [0003] According to the feedback from the research, the problems in the tire endurance test and actual use are mainly concentrated in the shoulders and rims. According to the finite element analysis, the stress at the end of the shoulder belt is the largest, and this area is the most prone to delamination. ...

AI Technical Summary

Problems solved by technology

Especially for tires in the domestic market, overloading and long-term driving are more serious. The current regulatory experiments can no longer meet the existing market demand, so more stringent technical requirements have been put forward, that is, overloading and long-term durability tests. The experiment time is increased from 34h (regulation value) in current regulations to 300h

[0003] According to the feedback from the research, the problems in the tire endurance test and actual use are mainly concentrated in the shoulders and rims. According to the finite element analysis, the stres

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