CN216610743U - Supporting structure of explosion-proof tire - Google Patents

Abstract

The invention discloses an explosion-proof tire supporting structure, and belongs to the technical field of tire manufacturing. According to different tire specifications, can glue outside surface parcel one deck or multilayer fibre hanging wire layer at the support, the concrete structure and the concrete numerical value on fibre hanging wire layer have been expounded in this scheme, on the unchangeable basis of assurance tire performance, can effectively reduce the thickness that supports and glue, have overcome the poor high technological problem of oil consumption of ordinary explosion-proof tire silence travelling comfort, be suitable for with the autologous tire of passenger car full system motorcycle type.

Description

Supporting structure of explosion-proof tire

Technical Field

The invention relates to the technical field of tire manufacturing, in particular to a supporting structure of an explosion-proof tire.

Background

At present, the tire burst is a very serious safety accident, especially the tire burst on the expressway. According to statistics, 70% of accidents on domestic highways are caused by tire burst, which seriously affects the personal safety of drivers and passengers. With the reduction of the requirements of people on driving safety performance and the reduction of the requirements of vehicle equipped spare tires, the tires with common performance can not meet the requirements of people on performance such as safety, comfort, silence and the like. The existing explosion-proof tire ensures the zero-air-pressure durability thereof by adding a strong and hard supporting rubber at the tire side part, but sacrifices the mute comfort performance, and in addition, the tire has higher requirement on adapting the automobile suspension, so that the application in a small range can be realized.

The existing structural design of the explosion-proof supporting tire has a plurality of unreasonable parts in the design aspect, the supporting part has large thickness and low bending resistance, and after the tire is rolled for one time, rubber materials are heated, so that the strength is low, and potential safety hazards exist. Meanwhile, in order to increase the support performance and the structural strength, two layers of tire casings are usually arranged, so that the weight is increased, the cost is increased, and the fuel economy is poor.

Disclosure of Invention

Aiming at the technical problems of large thickness, high hardness and poor bending resistance and flexibility of a support rubber layer in the tire in the prior art, the invention provides an explosion-proof tire support structure which can effectively solve the technical problems.

In order to solve the technical problem, the invention provides a supporting structure of an explosion-proof tire, which comprises a supporting rubber layer and a tire body cord layer,

a fiber cord layer is applied to the outer side of the support rubber layer, and the fiber cord layer is one or more layers of fiber cords;

if the fiber cord layer is provided as one layer of cord: the lower end point of the fiber cord layer is coincided with the lower end point of the support glue, and the distance from the upper end point of the fiber cord layer to the upper end point of the support glue is L₂L is more than or equal to 10mm₂≤30mm；

If the fiber cord layer is provided as a double-layer cord: the lower end point of one layer of cord layer is coincided with the lower end point of the support glue, and the distance from the upper end point to the upper end point of the support glue is L₂ ¹，L₂1 and L₂The numerical values are the same; the two layers of cord layers are arranged below the one layer of cord layer, and the distance between the upper end point of the two layers of cord layers and the upper end point of the support glue is L₁，L₂Ratio L₁Short by 5-15mm, and the distance between the lower end point and the lower end point of the support adhesive is L₃，5mm≤L₃≤15mm；

If the fiber cord layer is provided as a multi-layer cord: laying the double-layer cords in the order of 18mm L₂ ¹Less than or equal to 24mm, and L of the next layer₁Is more than one layer L₁The length of the groove is 5-13 mm.

Preferably, the cords of the fiber cord layer are crossed, and the included angle between the cords and the carcass hanging cord layer is-25 degrees to +25 degrees.

Preferably, the shape of the support adhesive layer is trapezoidal, and the fiber cord layer is applied to the two waists and the outer side of the upper bottom of the trapezoid.

Preferably, the thickness of the fiber cord layer is 0.8-2 mm.

Preferably, the fiber cord layer is made of soft polyester or blended materials.

Compared with the prior art, the invention has the following technical effects:

(1) the shape, size and positioning of the support structure of the run-flat tire solve the technical problem of poor silencing comfort and high oil consumption of the common run-flat tire, and the support structure is suitable for self inner support tires of all-series vehicle types of passenger vehicles.

(2) The fiber cord layer is made of soft polyester or blended materials, the upper tire side and the bead part are effectively protected through a unique positioning design, the radial deformation of the tire side is enhanced, the stress effect of the bead part is buffered, and the driving comfort is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.

FIG. 1 is a schematic view showing the overall structure of a tire according to an embodiment;

FIG. 2 is a schematic view of a layer of suspension wire application;

FIG. 3 is a schematic view of double-layered suspension wire application;

FIG. 4 is a schematic view of a turn-up bead structure;

FIG. 5 is a schematic view of an angle between a fiber cord layer suspension wire and a carcass suspension wire layer;

FIG. 6 is a tire shoulder shape with different included angles between the fiber cord layer suspension wire and the tire body suspension wire layer;

the tire comprises a tire surface 1, a cap ply 2, a belt ply 3, a tire side 4, a tire body 5, a reinforcing layer 6, a supporting rubber 7, an outer protective rubber 8, a bead filler 9, a bead ring 10, an inner liner layer 11 and a fiber cord layer 12.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.

The invention provides a supporting structure of an explosion-proof tire, which can effectively solve the technical problems of large thickness, high hardness and poor bending resistance and flexibility of a supporting rubber layer in the tire.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

As shown in figure 1, the invention provides an explosion-proof tire supporting structure, the whole structure of the tire comprises a tire tread 1, a cap ply 2, a belted layer 3, a tire side 4, a tire body 5, a reinforcing layer 6, a supporting rubber 7, an outer guard 8, a bead filler 9, a steel wire ring 10, an inner liner 11 and a fiber cord layer 12, the thickness of the supporting body can be reduced by applying the fiber cord layer 12 outside the supporting rubber 7, the supporting performance is enhanced, the stress concentration of the tire side part is avoided, the tire can still continuously run for more than 60km at the speed of 60km/h under the zero air pressure state, the weight and the cost can be reduced by using the supporting body of the fiber cord layer 12, the durability of the tire side bending is improved, the rolling resistance can be reduced, and the comfort is improved.

As shown in fig. 2, for the tire specifications with the flatness ratio below 50 series, the strength requirement of the tire can be met by arranging one fiber suspension wire layer 12, and the fiber suspension wire layer can replace one carcass cord layer to play a role in side impact resistance, i.e. the whole tire can be adjusted from a double-layer carcass cord to a single-layer carcass cord, so that the weight and the cost of the tire are reduced. If the fiber cord layer is set as one layer of cord: the lower end point of the fiber cord layer is coincided with the lower end point of the support glue, and the distance from the upper end point of the fiber cord layer to the upper end point of the support glue is L₂L is more than or equal to 10mm₂Less than or equal to 30 mm; the positioning is different according to the specifications of the tire, but the positioning is not below the widest point of the tire section or consistent with the end point of the carcass turn-up layer.

As shown in fig. 3, according to the specification of different tires, if the fiber cord layer is provided as a double-layer cord: the lower end point of one layer of cord layer is coincided with the lower end point of the support glue, and the distance from the upper end point to the upper end point of the support glue is L₂ ¹，L₂1 and L₂The numerical values are the same; the two layers of cord layers are arranged below the one layer of cord layer, and the distance between the upper end point of the two layers of cord layers and the upper end point of the support glue is L₁，L₂Ratio L₁The length is 5-15mm, namely the difference level between two cord fabric layers is 5-15mm, and the distance between the lower end point and the lower end point of the support glue is L₃，5mm≤L₃≤15mm；

As shown in fig. 3, the laying is continued in the order of fig. 3, if the fiber cord layer is provided as a multi-layer cord: laying the double-layer cords in the order of 18mm L₂ ¹Less than or equal to 24mm, and L of the next layer₁Is more than one layer L₁The length of the groove is 5-13 mm. The positioning is different according to different specifications of the tire, but the upper end point of the cord fabric with more than 2 layers is positioned above the widest point of the section of the tire and has a difference level of more than 5mm with the end point of the turn-up layer of the tire body.

When the tire design section exceeds 50 series, the distance L3 between the lower endpoint of the support rubber and the lower endpoint of the reinforcing layer is more than or equal to 30mm, the tire bead can be turned up, and the turning up height and the tire body keep more than 5mm difference, as shown in FIG. 5. The design utilizes the acting force of the tire bead hooping hub, the tire bead is stretched by the cord, and the tire bead resists torsional deformation to improve the sidewall support.

Specifically, as shown in fig. 5, the cords of the fiber cord layer are crossed, and the included angle between the cords and the carcass hanging cord layer is-25 to +25 degrees. The advantage of designing like this lies in supporting gluey whole thickness attenuate, and side wall pliability improves, and radial elastic deformation increases, reduces rim of a mouth position atress, avoids down the themogenesis that the excessive stress of side wall concentrates and leads to, promotes the zero atmospheric pressure durability of tire, because of its radial elasticity increase when traveling under normal atmospheric pressure, and the damping is effectual, difficult damage rim, full system motorcycle type of adaptation passenger car.

As shown in fig. 6, when the angle is ± 30 °, the linings are seriously overlapped, and it can be inferred that, during the rolling process of the tire, the linings rub at high speed, the temperature rises sharply, and the heat damage of the tire shoulder and the seam part is accelerated; when the angle is within minus 25 degrees to plus 25 degrees, the inner liner layer can be ensured to be slightly contacted or not contacted, and the tire can be ensured to be decelerated or driven away from a highway under the condition of zero air pressure.

Specifically, the shape of the support adhesive layer is trapezoidal, and the fiber cord layer is applied to the two waists and the outer side of the upper bottom of the trapezoid. The thickness of the middle part of the trapezoidal support rubber is designed to be equal, namely (H1 is more than or equal to 3mm, H2 is more than or equal to H3 is more than or equal to 12 mm).

Specifically, the thickness of the fiber cord layer is 0.8-2 mm.

The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the foregoing, the description is not to be taken in a limiting sense.

Claims (5)

1. A supporting structure of an explosion-proof tire comprises a supporting rubber layer and a tire body cord layer, and is characterized in that,

a fiber cord layer is applied to the outer side of the support rubber layer, and the fiber cord layer is one or more layers of fiber cords;

if the fiber cord layer is set as one layer of cord: the lower end point of the fiber cord layer is coincided with the lower end point of the support glue, and the distance from the upper end point of the fiber cord layer to the upper end point of the support glue is L₂L is more than or equal to 10mm₂≤30mm；

If the fiber cord layer is provided as a double-layer cord: the lower end point of one layer of cord layer is coincided with the lower end point of the support glue, and the distance from the upper end point to the upper end point of the support glue is L₂ ¹，L₂ ¹And L₂The numerical values are the same; the two layers of cord layers are arranged below the one layer of cord layer, and the distance between the upper end point of the two layers of cord layers and the upper end point of the support glue is L₁，L₂Ratio L₁Short by 5-15mm, and the distance between the lower end point and the lower end point of the support adhesive is L₃，5mm≤L₃≤15mm；

If the fiber cord layer is provided as a multi-layer cord: laying the double-layer cords in the order of 18mm L₂ ¹Less than or equal to 24mm, and L of the next layer₁Is more than one layer L₁The length of the groove is 5-13 mm.

2. A run flat tire support structure according to claim 1, wherein said fiber cord layer has a cross shape with cords between-25 ° and +25 ° from the carcass cord layer.

3. A run flat tire support structure as in claim 2, wherein said support rubber layer is configured in a trapezoidal shape, and a fiber cord layer is applied to the outer sides of the two waists and upper sole of the trapezoidal shape.

4. A run flat tire support structure as in claim 1 wherein said layer of fiber cords has a thickness of 0.8-2 mm.

5. A run flat tire support structure as in claim 1 wherein said fiber cord layer is of a soft polyester or blend material.

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