CN216069492U

CN216069492U - Tire tread and tire

Info

Publication number: CN216069492U
Application number: CN202122068763.8U
Authority: CN
Inventors: 叶烔昕; 王君; 曲宾建; 刘俊杰; 贾永华; 赵帅; 卢艳伟
Original assignee: Qingdao Doublestar Tire Industry Co Ltd
Current assignee: Qingdao Doublestar Tire Industry Co Ltd
Priority date: 2021-08-30
Filing date: 2021-08-30
Publication date: 2022-03-18
Anticipated expiration: 2031-08-30

Abstract

The utility model relates to a tire tread and a tire, and belongs to the technical field of tires. The tire tread comprises a crown rubber, a middle rubber and a base rubber, wherein the crown rubber, the middle rubber and the base rubber are sequentially arranged from top to bottom. The tire provided by the utility model has low rolling resistance and high wet skid resistance, wherein the rolling resistance is 5.82, the wet grip is 1.60, and the rolling resistance and wet skid of the European Union label grade reach A grade.

Description

Tire tread and tire

Technical Field

The utility model belongs to the technical field of tires, and particularly relates to a tire tread and a tire.

Background

The tire, which is the only component of the vehicle structure that contacts the ground, functions to bear the vehicle load, drive and brake, change and maintain the vehicle's direction of travel, absorb shock from the ground, and the like. The european union started to implement the tire labeling method in 2012, and the tires sold on the market in the european union must be labeled with three properties including tire rolling resistance, wet skid resistance and noise. Tires having properties that do not meet the minimum limits cannot be marketed within the european union.

Since the implementation of the European Union labeling method, the properties of rolling resistance, wet skid and the like of tires are more concerned regardless of the international or domestic market. However, the conventional tire structure can only ensure one performance of rolling resistance or wet skid, and is difficult to achieve low rolling resistance and high moisture resistance. Therefore, it is important to provide a tire with low rolling resistance and high moisture resistance.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the related art, the utility model provides the tire tread and the tire, which have the characteristics of low rolling resistance and high wet skid resistance.

The utility model provides a tire tread, which comprises a tire crown rubber, a middle rubber and a base rubber, wherein the tire crown rubber, the middle rubber and the base rubber are sequentially arranged from top to bottom.

The utility model also provides a tire which comprises the tire tread of the scheme.

Preferably, the bottom of the tread is provided with a crown band strip and a steel belt layer in sequence.

Preferably, the included angle between the steel belt ply and the circumferential direction of the tire is 26-30 degrees.

Preferably, the density of the steel belt layer is 25-30 EPI.

Preferably, the steel belt layer comprises a 1# belt layer and a 2# belt layer which are arranged from inside to outside in sequence; and the end part of the No. 1 belted layer is covered with belt layer edge covering glue.

Preferably, the two sides of the tire comprise a tire side, an inner liner, a tire cord fabric, a bead filler and a bead ring from outside to inside.

Preferably, said sidewalls are applied to the tread in the form of a side cap.

Preferably, the sidewall comprises a sidewall gum and an outer gum.

The tire tread provided by the utility model is improved from the traditional crown rubber, base rubber and wing rubber into crown rubber, intermediate rubber and base rubber. The tire tread has a three-layer distribution structure, the tire wet skid resistance of the tire can be improved by the tire tread rubber, and the middle rubber and the base rubber play a role in reducing the rolling resistance of the tire.

Furthermore, the tire provided by the utility model has a high-density structure of the steel belt layer, and the density of the steel belt layer is improved by 28% compared with that of the conventional belt layer. The high-density belted layer can improve the rigidity of the tire tread, reduce vibration and heat generation of the tire tread in the rolling process and reduce rolling resistance.

The tire tread and the tire sidewall are attached by changing the traditional crown-covered side into a side-covered crown, so that a tire tread wing rubber structure can be omitted, the length of the tire sidewall can be reduced, the weight can be reduced, the cost can be reduced, and the rolling resistance of the tire can be reduced. The side crown structure can improve the shoulder profile of the tire, so that the ground contact shape is fuller after the finished tire is inflated, and the controllability and the dry ground holding force can be improved.

The tire with the structure has the characteristics that the rolling resistance and the wet skid of the European Union label grade reach A grade. Wherein the rolling resistance is 5.82

(grade A is less than or equal to 6.5), and wet grab is 1.60 (grade A is more than or equal to 1.55).

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the utility model and together with the description serve to explain the utility model without limiting the utility model. In the drawings:

FIG. 1 is a schematic structural view of a tire according to the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

wherein the tire comprises 1-crown rubber, 2-intermediate rubber, 3-base rubber, 4-crown strip, 5-steel belt ply, 51-1# belt ply, 52-2# belt ply, 6-belt ply edge rubber, 7-tire body cord fabric, 8-inner liner, 9-sidewall rubber, 10-outer protective rubber, 11-apex rubber and 12-steel wire ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in FIGS. 1-2, the present invention provides a tire tread comprising a crown compound 1, an intermediate compound 2 and a base compound 3, wherein the crown compound 1, the intermediate compound 2 and the base compound 3 are arranged in sequence from top to bottom.

In the utility model, the tread structure is improved from the traditional crown rubber, base rubber and wing rubber into crown rubber, intermediate rubber and base rubber. The tire tread is of a three-layer structure: the tire crown rubber 1 on the uppermost layer has the rubber material characteristics of wet skid resistance and wear resistance, so that the actual wear of the tire in use is improved, and the wet skid resistance is enhanced. The middle glue 2 of the middle layer has small glue material hysteresis and low heat generation and is used for reducing rolling resistance. The lower layer is base rubber 3, so that the heat generated by the friction between the tire tread and the crown band when the tire rolls can be reduced, the rolling resistance is reduced, and meanwhile, the fine adjustment can be performed on the smoothness, the noise and the controllability of the tire.

In the present invention, the tread bottom is preferably provided with a cap strip 4 and a steel belt 5 in this order.

In the utility model, the included angle between the steel belt ply 5 and the circumferential direction of the tire is preferably 26-30 degrees. The included angle between the steel belt ply 5 and the circumferential direction of the tire is set to be 26-30 degrees, the angle of the steel belt ply 5 (the included angle between the steel belt ply and the circumferential direction of the tire) is increased by about 21 percent, the grounding shape of the tire can be optimized, and the wet and skid performance is improved.

In the present invention, the density of the steel belt 5 is preferably 25 to 30 EPI. The density of the steel belt ply 5 is set to 25-30 EPI, so that the rigidity of the tire tread can be effectively improved, the vibration and heat generation of the tire tread in the rolling process of the tire are reduced, and the rolling resistance is reduced.

In the present invention, the steel belt 5 preferably includes a # 1 belt 51 and a # 2 belt 52 arranged in this order from the inside to the outside; the end part of the No. 1 belt layer 51 is preferably covered by belt layer edge covering glue 6. In the utility model, the end part of the No. 1 belt layer 51 is wrapped by the belt layer edge wrapping rubber 6, so that the interlayer shearing of the belt layer edge can be reduced, the rolling heat generation can be reduced, the rolling resistance can be reduced, and the durability of the tire can be improved when the tire rolls.

In the present invention, the tire preferably further comprises both sides of the tire; the two sides of the tire preferably comprise a tire side, an inner liner 8, a tire body cord fabric 7, an apex 11 and a steel wire ring 12 from outside to inside.

In the present invention, the sidewalls are preferably applied to the tread in the form of a side cap. The adoption of the side crown-wrapping structure can save a tread wing rubber structure, and meanwhile, the length of the tire side can be reduced, so that the cost can be reduced, and the rolling resistance of the tire can be reduced. The side crown structure can improve the shoulder profile of the tire, so that the ground contact shape is fuller after the finished tire is inflated, and the controllability and the dry ground holding force are improved.

In the present invention, the sidewall preferably includes a sidewall rubber 9 and an outer skin rubber 10. The sidewall rubber 9 of the utility model can reduce the bending fatigue of the sidewall of the tire during the rolling process of the tire, and simultaneously protect the carcass layer and avoid abrasion and impact. The sidewall rubber 9 is preferably prepared using a low heat build formulation. The outer rubber 10 can play a role in supporting the upper tire side of the tire on one hand, and can play a role in wear resistance and sealing between the tire body cord fabric and the rim on the other hand.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A tire comprising a tire tread; the tire tread comprises a crown rubber, a middle rubber and a base rubber, wherein the crown rubber, the middle rubber and the base rubber are sequentially arranged from top to bottom; and the bottom of the tread is sequentially provided with a crown band strip and a steel wire belt ply.

2. The tire of claim 1, wherein the angle between the steel belt and the circumferential direction of the tire is 26 to 30 °.

3. The tire of claim 1, wherein the density of the steel belt ply is 25 to 30 EPI.

4. The tire of claim 1, wherein the steel belt comprises a # 1 belt layer and a # 2 belt layer arranged in this order from the inside to the outside; and the end part of the No. 1 belted layer is covered with belt layer edge covering glue.

5. The tire of claim 1, further comprising two sides of the tire; the two sides of the tire comprise a tire side, an inner liner, a tire body cord fabric, a bead filler and a bead ring from outside to inside.

6. The tire of claim 5 wherein said sidewalls are in a side-cap configuration with the tread.

7. The tire of claim 5, wherein the sidewall comprises a sidewall gum and an outer gum.