CN209869973U

CN209869973U - End structure of reinforcing layer of all-steel truck radial tire

Info

Publication number: CN209869973U
Application number: CN201920648238.3U
Authority: CN
Inventors: 袁时超
Original assignee: Jiangsu General Science Technology Co Ltd
Current assignee: Jiangsu General Science Technology Co Ltd
Priority date: 2019-05-07
Filing date: 2019-05-07
Publication date: 2019-12-31
Anticipated expiration: 2029-05-07

Abstract

The utility model relates to a strengthening layer tip structure of all-steel load radial tire, be equipped with the tire bead steel wire bundle in the tire matrix, be equipped with the triangle colloid above the tire bead steel wire bundle, be equipped with matrix curtain cloth in the outside of tire bead steel wire bundle and triangle colloid, be equipped with the steel wire bead in the outside of matrix curtain cloth, the tip of steel wire bead is located the tip of matrix curtain cloth above; also includes a buffer film; the buffer rubber sheet is stuck and fixed on the outer side surface of the triangular rubber body, the triangular rubber body is separated from the end part of the tire body cord fabric and the end part of the steel wire seam allowance by the buffer rubber sheet, and the end part of the tire body cord fabric and the end part of the steel wire seam allowance are located in the middle of the buffer rubber sheet in the width direction. The utility model solves the problems of stress concentration and excessive heat generation existing in the ply turn-up end point of the all-steel load-carrying radial tire body cord fabric and the ply turn-up end point of the steel wire seam; the utility model reduces the problems of external crack of the steel wire bead and the like, and improves the safety performance of the tire; the utility model provides the high production efficiency of tire has improved product quality's stability.

Description

End structure of reinforcing layer of all-steel truck radial tire

Technical Field

The utility model relates to an all-steel load radial tire's reinforcement layer tip structure, the utility model belongs to the technical field of all-steel load radial tire structure.

Background

With the needs of national city construction, the application fields of all-steel truck radial tires are wider and wider, and various problems are easy to occur to a tire bead in the use process of the all-steel truck radial tire due to the reasons of heavy load, harsh running conditions and the like. The main problem is expressed in the form of cracking or empty opening, and the abnormal parts are mostly at the ends of the carcass turn-up or turn-up of the opening, which are collectively called as the ends of the reinforcing layer. In recent years, the structure of all-steel radial tires is continuously improved, but finding a method which is simple in production and has outstanding effect becomes a difficult problem.

The original steel wire seam turn-up end point is basically protected by the simple covering of a nylon seam turn-up or the turn-up covering of a rubber sheet, and the side wall rubber effectively protects the outer side of the turn-up reinforcing layer, and the inner side of the turn-up reinforcing layer is not effectively protected by direct contact with the triangular rubber. The protection mode can be completed by wrapping the end part of the tire body and the end part of the steel wire seam allowance, but the method needs to wrap the steel wire seam allowance and the tire body at the same time, the process is complicated, and the production efficiency is influenced. If the edge covering quality is not good, the product quality is affected, and the effect of protecting the inner side of the reinforcing layer cannot be achieved.

Disclosure of Invention

The utility model aims at overcoming the not enough of existence among the prior art, provide one kind and can improve the bearing performance of tire and simplify the all steel load radial tire's of production technology strengthening layer tip structure.

According to the technical scheme provided by the utility model, the end structure of the reinforcing layer of the all-steel load radial tire comprises a tire body, a bead wire bundle, a triangular colloid, a tire body cord fabric and a steel wire opening; the tire is characterized in that a tire bead wire bundle is arranged in a tire body, a triangular colloid is arranged above the tire bead wire bundle, a tire body cord fabric is arranged outside the tire bead wire bundle and the triangular colloid, a steel wire opening is arranged outside the tire body cord fabric, and the end part of the steel wire opening is positioned above the end part of the tire body cord fabric; also includes a buffer film; the buffer rubber sheet is fixedly adhered to the outer side face of the triangular rubber body, the triangular rubber body is separated from the end portion of the tire body cord fabric and the end portion of the steel wire seam allowance by the buffer rubber sheet, and the end portion of the tire body cord fabric and the end portion of the steel wire seam allowance are located in the middle of the buffer rubber sheet in the width direction.

The thickness of the buffer film is 1.5 ~ 3mm, and the width of the buffer film is 30 ~ 50 mm.

The lower end part of the buffer film is stuck and fixed at the position 15 ~ 50mm above the root part of the triangular colloid.

The utility model solves the problems of stress concentration and excessive heat generation existing in the ply turn-up end point of the all-steel load-carrying radial tire body cord fabric and the ply turn-up end point of the steel wire seam; the utility model reduces the problems of bead external crack, improves the service life of the tire, and improves the safety performance of the tire; the utility model provides high production efficiency of tire, reduced the quality fluctuation, improved product quality's stability.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of the middle triangular colloid of the present invention.

Detailed Description

The present invention will be further described with reference to the following specific embodiments.

The utility model discloses a strengthening layer end structure of an all-steel load radial tire, which comprises a tire carcass 1, a bead wire bundle 2, a triangular colloid 3, a carcass cord fabric 4 and a steel wire seam 5; a tire bead wire bundle 2 is arranged in a tire body 1, a triangular colloid 3 is arranged above the tire bead wire bundle 2, a tire body cord fabric 4 is arranged outside the tire bead wire bundle 2 and the triangular colloid 3, a steel wire opening 5 is arranged outside the tire body cord fabric 4, and the end part of the steel wire opening 5 is positioned above the end part of the tire body cord fabric 4; also comprises a buffer film 6; the cushion rubber sheet 6 is fixedly adhered to the outer side surface of the triangular rubber body 3, the triangular rubber body 3 is separated from the end portion of the tire body cord fabric 4 and the end portion of the steel wire seam allowance 5 through the cushion rubber sheet 6, and the end portion of the tire body cord fabric 4 and the end portion of the steel wire seam allowance 5 are located in the middle of the cushion rubber sheet 6 in the width direction.

The thickness of said cushion rubber sheet 6 is 1.5 ~ 3mm and the width b of the cushion rubber sheet 6 is 30 ~ 50mm, which is already applicable to most bead structures.

The lower end part of the buffer rubber sheet 6 is fixedly adhered to the position 15 ~ 50mm above the root part of the triangular rubber body 3, and the specific numerical value can be determined according to tires with different specifications.

The utility model discloses replace the limit portion rubber sheet at original strengthening layer turn-up end point position on the triangle colloid 3 with the attached buffering film 6.

The rubber seeds of the buffer rubber sheet 6 are steel wire rubber seeds, namely the same rubber seeds as the tire body or the steel wire seam. The buffer rubber sheet 6 can protect and buffer the end part of the tire body cord fabric 4 and the end part of the steel wire seam allowance 6, and the direct contact between the buffer rubber sheet and the triangular colloid 3 is avoided. The attachment operation of the cushion rubber sheet 6 can be performed when the triangular colloid 3 is formed.

Because the utility model discloses cancelled the film of borduring of reinforcement layer extreme point, simplified production technology, improved production efficiency. The utility model provides a buffer film 6 plays the cushioning effect between the tip of steel wire rim of mouth 5 and the tip of matrix curtain cloth 4 and triangle colloid 3, reduces stress concentration excessively, and the themogenesis is too high, improves the bearing capacity of tire.

Claims

1. An end structure of a reinforcing layer of an all-steel load-carrying radial tire comprises a tire body (1), a tire bead steel wire bundle (2), a triangular colloid (3), a tire body cord fabric (4) and a steel wire opening (5); a tire bead wire bundle (2) is arranged in a tire body (1), a triangular colloid (3) is arranged above the tire bead wire bundle (2), a tire body cord fabric (4) is arranged outside the tire bead wire bundle (2) and the triangular colloid (3), a steel wire opening (5) is arranged outside the tire body cord fabric (4), and the end part of the steel wire opening (5) is positioned above the end part of the tire body cord fabric (4); the method is characterized in that: also comprises a buffer film (6); the buffer rubber sheet (6) is stuck and fixed on the outer side surface of the triangular rubber body (3), the end parts of the triangular rubber body (3) and the tire body cord fabric (4) and the end parts of the steel wire seam allowance (5) are separated by the buffer rubber sheet (6), and the end parts of the tire body cord fabric (4) and the steel wire seam allowance (5) are located in the middle position of the width direction of the buffer rubber sheet (6).

2. The end structure of the reinforcing layer of an all-steel heavy duty radial tire according to claim 1, wherein the thickness of the cushion rubber sheet (6) is 1.5 ~ 3mm, and the width of the cushion rubber sheet (6) is 30 ~ 50 mm.

3. The end part structure of the reinforcing layer of the all-steel heavy duty radial tire according to claim 1 or 2, wherein the lower end part of the cushion rubber sheet (6) is fixedly attached to a position 15 ~ 50mm above the root part of the bead filler (3).