Reinforced tire bead structure with edge coated with nylon wrapping cloth and preparation method thereof

Abstract

The invention discloses a reinforced tire bead structure with an edge coated with nylon wrapping cloth and a preparation method thereof. The nylon wrapping cloth is arranged as a single layer and wraps around the end point of the outer side of a steel wire wrapping cloth, and the cross section is in an inverted U shape. The end point of the inner side of the nylon wrapping cloth is disposed between the reservedly wrapped end point of the outer side of a tire body cord fabric and the reservedly wrapped end point of the outer side of the steel wire wrapping cloth; and the nylon wrapping cloth has an angle of reducing stress concentration, and the height of the reservedly wrapped end point of the outer side of the steel wire wrapping cloth is larger than the height of the reservedly wrapped end point of the outer side of the tire body cord fabric. A layer of nylon wrapping cloth is used for edge covering at the end point of the outer side of the steel wire wrapping cloth and extends between the reservedly wrapped end point of the tire body cord fabric and the steel wire wrapping cloth, and the stress concentration of a tire bead part is reduced. An angled nylon wrapping cloth is additionally arranged between the outer end point of the steel wire wrapping cloth and rubber and between the reservedly wrapped end point of a carcass and the steel wire wrapping cloth to reduce stress concentration. The rigidity of the nylon wrapping cloth is higher than that of the rubber, the rigidity of the tire bead part can be improved, and the failure rate of the tire bead part of the tire is reduced.

Description

technical field [0001] The invention relates to the technical field of tires, in particular to a nylon-wrapped reinforced bead structure and a preparation method thereof. Background technique [0002] Domestic commercial trucks generally have the phenomenon of overloading and driving for a long time. During the use of tires, cracks and deformations often occur in the bead parts, which become frequent parts of tire failures, affecting the life and performance of tires. There are many, such as carcass, steel wire cloth, apex rubber, wear-resistant rubber, etc. According to the finite element analysis, the stress concentration at the end point of the carcass cord wrapping and the outer end point of the steel wire cloth will easily lead to the separation of the steel wire and rubber at the end point. resulting in failure. Contents of the invention [0003] The object of the present invention is to provide a reinforced bead structure wrapped with nylon cloth and its preparatio...

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Problems solved by technology

[0002] Domestic commercial trucks generally have the phenomenon of overloading and driving for a long time. During the use of tires, cracks and deformations often occur in the bead parts, which become frequent parts of tire failures, affecting the life and performance of tires. There are many, such as carcass, steel wire cloth, apex rubber, wear-resistant rubber, etc. According to the finite element analysis, the stress concentration at the end point of the carcass cord wrapping and the outer end point of the steel wire cloth will easily lead to the separation of the steel wire and rubber at the end point. causing the failure to occur

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