CN110001294A - All-steel radial tyre crown structure - Google Patents

Abstract

The invention relates to a tire crown structure, in particular to an all-steel radial tire crown structure, and belongs to the technical field of tire structures. It comprises an inner liner, a carcass and a tread which are sequentially arranged from the inside to the outside, and the belt structure comprises a first belt layer, a second belt layer, a third belt layer and The fourth belt layer, the two ends of the first belt layer extend along the outer surface of the carcass and the inner surface of the sidewall rubber layer to the position of the sidewall; The shoulder pads are respectively connected with the inner side surface of the tread, the inner side surface of the second belt layer and the outer side surface of the first belt layer. The invention extends the first belt layer to the sidewall, strengthens the sidewall part, reduces the deformation of the sidewall part, improves the sidewall rigidity, and improves the tire bearing capacity; the sidewall deformation part is protected by the first belt layer. It is still easy to contact hard objects on the ground, which can also greatly reduce the risk of being punctured and improve the safety performance of the tire.

Description

All-steel radial tire crown structure

technical field

The invention relates to a tire crown structure, in particular to an all-steel radial tire crown structure, and belongs to the technical field of tire structures.

Background technique

With the needs of urban development, all-steel radial tires are more and more widely used in various transportation industries, whether it is mining areas, high-speed, or township transshipment, the shadow of all-steel radial tires can be seen everywhere. With the continuous promotion of applications, people gradually put forward higher requirements for the performance of all-steel radial tires. These different requirements promote all-steel radial tires to change in load, faster, longer driving life, and safety performance. The higher direction continues to develop. Of course, some difficulties and bottlenecks have been encountered in the process of performance improvement. For example, the improvement of the tire crown bearing performance and the improvement of the sidewall strength under bad road conditions have not been greatly improved, and technical personnel are urgently in need of improvement.

In the prior art, most of the all-steel radial tires have a four-layer belt structure, and gradually developed into a 0° belt plus three-layer belt load-bearing tire crown structure. In the prior art, the sidewall deformation of the all-steel radial tire is large under the condition of heavy tire load, and it is easy to be damaged under severe road conditions, which affects the service life of the all-steel radial tire.

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome the above deficiencies, thereby providing an all-steel radial tire crown structure, extending the two ends of the first belt layer to the tire sidewall position, strengthening the structural strength of the sidewall part, making the sidewall part The deformation is reduced, the rigidity of the sidewall is improved, and the bearing capacity of the tire is improved.

According to the technical solution provided by the present invention, the crown structure of the all-steel radial tire includes an inner liner, a carcass and a tread which are arranged in sequence from the inside to the outside. The left and right parts of the outer surface of the carcass are connected to the sidewall rubber layer, and the sidewall rubber layer extends upward to the outer surface of the carcass. The second belt layer, the third belt layer and the fourth belt layer, both ends of the first belt layer extend along the outer surface of the carcass and the inner surface of the sidewall rubber layer to the position of the sidewall; the belt layer The left and right sides of the structure are provided with shoulder pads, which are respectively connected with the inner surface of the tread, the inner surface of the second belt layer and the outer surface of the first belt layer.

Further, the fourth belt layer includes at least two 0° belt layers, and the at least two 0° belt layers are stacked and connected to form a whole.

Further, the tread comprises a tread base rubber layer and a tread cap rubber layer which are sequentially arranged from the inside to the outside, the inner side of the tread base rubber layer is connected to the belt layer structure, and the outer side of the tread base rubber layer is connected to the tread cap rubber layer. .

Further, the width dimension of the first belt layer is 150-200 mm larger than the width dimension of the second belt layer.

Compared with the prior art, the present invention has the following advantages:

The structure of the invention is simple, compact and reasonable. The first belt layer extends to the sidewall to strengthen the sidewall part, so that the deformation of the sidewall part is reduced, the rigidity of the sidewall is improved, and the bearing capacity of the tire is improved; Under the protection of the belt layer, even if it is easy to contact the hard objects on the ground, it can greatly reduce the risk of being punctured and improve the safety performance of the tire; due to the increase in the width of the first belt layer, the overall bearing capacity of the tire crown is effectively improved, especially the tire The shoulder part can assist the 0° belt layer to improve the tightening coefficient of the tire crown, thereby improving the tire's load-bearing capacity.

Description of drawings

FIG. 1 is a front view of the present invention.

Description of reference numerals: 1- inner liner, 2- carcass, 3- tread cap rubber layer, 4- tread base rubber layer, 5- sidewall rubber layer, 6- first belt layer, 7- first Second belt, 8-third belt, 9-fourth belt, 10-shoulder pad.

Detailed ways

The present invention will be further described below in conjunction with the embodiments in the accompanying drawings:

As shown in FIG. 1 , the present invention mainly includes an inner liner 1 , a carcass 2 and a tread which are sequentially arranged from the inside to the outside, and a belt layer structure is provided at the center position between the carcass 2 and the tread.

The tread 3 includes a tread base rubber layer 4 and a tread cap rubber layer 3 that are sequentially arranged from the inside to the outside. The inner side of the tread base rubber layer 4 is connected to the belt layer structure, and the outer side of the tread base rubber layer 4 is connected to the tire. Crown glue layer 3.

The left and right parts of the outer surface of the carcass 2 are connected to the sidewall rubber layer 5 , and the sidewall rubber layer 5 extends upward to the outer surface of the carcass 2 .

The belt layer structure includes a first belt layer 6, a second belt layer 7, a third belt layer 8 and a fourth belt layer 9 which are sequentially arranged from the inside to the outside. The width of the first belt layer 6 The size is 150-200mm larger than the width of the second belt layer 7 , and both ends of the first belt layer 6 extend to the sidewall along the outer surface of the carcass 2 and the inner surface of the sidewall rubber layer 5 .

The fourth belt layer 9 includes at least two 0° belt layers, and the at least two 0° belt layers are stacked and connected to form a whole.

Shoulder pads 10 are provided on the left and right sides of the belt structure, and the shoulder pads 10 are respectively connected to the inner surface of the tread, the inner surface of the second belt layer 7 and the outer surface of the first belt layer 6 .

The structure of the invention is simple, compact and reasonable. The first belt layer extends to the sidewall to strengthen the sidewall part, so that the deformation of the sidewall part is reduced, the rigidity of the sidewall is improved, and the bearing capacity of the tire is improved; the sidewall deformation part is 1# Under the protection of the belt layer, even if it is easy to contact the hard objects on the ground, it can greatly reduce the risk of being punctured and improve the safety performance of the tire; due to the increase in the width of the first belt layer, the overall bearing capacity of the tire crown is effectively improved, especially the tire The shoulder part can assist the 0° belt layer to improve the tightening coefficient of the tire crown, thereby improving the tire's load-bearing capacity.

Claims (4)

1. a kind of all-steel radial tyre crown structure, including the liner layer (1), carcass (2) and tire set gradually from inside to outside Face, center position is equipped with belt structure, described carcass (2) outer surface or so two connections between carcass (2) and tyre surface Sidewall glue-line (5), sidewall glue-line (5) extends up to carcass (2) outer surface, it is characterized in that: the belt structure includes The first belt (6), the second belt (7), third belt (8) and the 4th belt set gradually from Inside To Outside (9), the both ends of the first belt (6) extend at sidewall location along carcass (2) outer surface and sidewall glue-line (5) inner surface； Be equipped with shoulder wedge (10) at left and right sides of the belt structure, shoulder wedge (10) respectively with tyre surface inner surface, the second band Beam layer (7) inner surface and the connection of the first belt (6) outer surface.

2. all-steel radial tyre crown structure as described in claim 1, it is characterized in that: the 4th belt (9) includes At least two 0 ° of belts, at least two 0 ° of belts are stacked on top of one another to link into an integrated entity.

3. all-steel radial tyre crown structure as described in claim 1, it is characterized in that: the tyre surface (3) includes by introversion Tread base glue-line (4) and the tyre surface hat glue-line (3) set gradually outside, tread base glue-line (4) medial surface connect belt knot Structure, tread base glue-line (4) lateral surface connect tyre surface hat glue-line (3).

4. all-steel radial tyre crown structure as described in claim 1, it is characterized in that: the width of first belt (6) It is 150 ~ 200mm bigger than the width dimensions of the second belt (7) to spend size.