Pneumatic radial tyre
A radial tire and tire technology, applied in the reinforcement layer, tire parts, transportation and packaging of pneumatic tires, etc., can solve the problems of little improvement in tire impact resistance, decreased cushioning performance at the crown, and increased steel wire rigidity. , to achieve the effect of stable quality performance, good tire durability and enhanced strength
Inactive Publication Date: 2008-02-13
QINGDAO DOUBLESTAR TIRE IND CO LTD
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Problems solved by technology
At present, in order to enhance the strength of the tire crown in the production process, increasing the density of steel cords or replacing large-diameter, high-strength steel cords is often used. Although this can improve the strength of the tire crown to a certain extent, due to the steel wire The reduction of the rubber material or the increase of the rigidity of the steel wire will reduce the cushioning performance of the tire crown when it is impacted, resulting in little improvement in the impact resistance of the tire.
Method used
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Embodiment Construction
[0019] 1 and 2, a pneumatic radial tire includes a tread 1 circumferentially surrounding the crown of the tire, sidewalls 2 symmetrically on both sides of the tire, two beads 3 and extending between the two beads 3 and Bypassing the bead 3 from the inner side to the outer side, a pair of turned-up parts and the tire main frame 4 located inside the bead 3 are formed; at the crown part, a steel wire curtain is arranged between the tread 1 and the corresponding main frame 4 The belt layer 5 formed by line rolling. The belt layer 5 includes four belt layers, and the belt layers are successively the first belt layer 501, the second belt layer 502, the third belt layer 503, and the fourth belt layer 504 from the inside of the tire to the outside. There is a certain width difference between the belt layers, and the value of the difference is 5mm, 15mm or 35mm.
[0020] The belt layer 5 is a rolled steel rubber ply layer with steel cords intersecting each other. The steel cords form ...
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Abstract
The invention discloses an aerated radial tire, including a tread encircling circumferentially a crown, sidewalls which are symmetrical at the both sides of the tire, two beads, a pair of reversely bending parts which extend along the beads and bend from inner side towards the outer side round the beads and a main framework at the inner side of the beads. A belt formed by pressing and extending an all-steel cord is arranged between the tread and the main framework corresponding to the tread at the crown part. The belt is divided into four layers and the both sides of the outmost belt are respectively provided with an edge belt. The edge belt is a steel wire belt, formed by the all-steel cord encircling the crown for tow circles and the angle between the all-steel cord in the steel wire belt and a tire equator is 0. The design can not only reinforce the intension for the crown but also improve the cushioning performance of the crown when the crown is impacted.
Description
technical field [0001] The invention relates to a pneumatic radial tire, and more specifically relates to a radial tire for improving the overall performance of the tire and making the bearing capacity and impact resistance of the tire stronger. Background technique [0002] For pneumatic tires, especially truck tires, under the condition of high air pressure and heavy load for a long time, the crown of the tire is prone to bursting when it is impacted, causing major accidents and losses. In order to improve the load capacity of the vehicle, it is necessary to strengthen the tire The overall strength and rigidity, especially the strength and safety factor of the tire crown. At present, in order to enhance the strength of the tire crown in the production process, increasing the density of steel cords or replacing large-diameter, high-strength steel cords is often used. Although this can improve the strength of the tire crown to a certain extent, due to the steel wire The red...
Claims
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Inventor 李勇徐静戚顺青陈红文丁始伟
Owner QINGDAO DOUBLESTAR TIRE IND CO LTD