High-air-tightness inflatable polyurethane tire

Abstract

The utility model discloses a high-air-tightness inflatable polyurethane tire, which relates to the technical field of tires and comprises a tire made of polyurethane materials, and blocky grains and longitudinal grains are arranged on the tread of the tire. A composite anti-puncture structure layer is embedded in the side wall of the tire, reinforcing frames are formed on the two sides of the outer wall of the tire, and the reinforcing frames and the tire are integrally formed. The reinforcing frame is composed of a plurality of concentrically-arranged reinforcing rings attached to the outer wall of the tire and a plurality of reinforcing strips sequentially connected with all the reinforcing rings in a penetrating mode, the reinforcing strips are attached to the outer wall of the tire, and the circle centers of the reinforcing rings coincide with the axis of the tire; the tire made of the polyurethane material has good air tightness, so that the internal air pressure of the tire can be kept stable, the influence of air pressure change on the tire performance and the vehicle controllability is reduced, and the service life of the tire is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to tire technical field especially relates to a high air tightness pneumatic polyurethane tire. BACKGROUND

[0002] The strength of the tire is the cornerstone of vehicle safety. In the prior art, the improvement of the strength of the tire often focuses on the structural reinforcement of the tread and the carcass, by using high-strength materials or optimizing the structural design, to enhance the overall load bearing and impact resistance, however, the strength of the tire side part is relatively weak.

[0003] Specifically, when the vehicle passes through the deceleration zone at a high speed, the tire side needs to withstand severe deformation pressure, if the deformation exceeds the elastic limit of the tire side material, the cord layer is prone to breakage, and then causes serious faults such as tire bulging, air leakage and even tire burst, which directly threatens the driving safety, and this phenomenon highlights the limitations of the traditional tire design in the improvement of the strength of the tire side. SUMMARY

[0004] In view of the above problems, the utility model aims at providing a high air tightness pneumatic polyurethane tire, which further improves the strength of the tire.

[0005] The technical scheme of the utility model is as follows: a high air tightness pneumatic polyurethane tire, comprising a tire made of polyurethane material, the tread of the tire is provided with block-shaped patterns and longitudinal patterns;

[0006] The tire side wall is embedded with a composite anti-penetration structure layer, and the outer wall of the tire is formed with a reinforcing frame on both sides, the reinforcing frame is integrally formed with the tire;

[0007] The reinforcing frame is composed of a plurality of reinforcing rings concentrically arranged on the outer wall of the tire, and a plurality of reinforcing bars sequentially penetrating and connecting all the reinforcing rings, the reinforcing bars are arranged on the outer wall of the tire, and the center of the reinforcing ring coincides with the axis of the tire.

[0008] Optionally, the reinforcing ring and the reinforcing bar are both composed of an outer rubber layer and a steel wire core wrapped inside the rubber layer, the steel wire core is made of a plurality of high-carbon structural steels spirally wound, and the rubber layer and the steel wire core on the outside of all the reinforcing rings and reinforcing bars are integrally arranged respectively; a plurality of reinforcing bars on each side are distributed at equal angles with the axis of the tire as the center.

[0009] Optionally, the composite anti-penetration structure layer is a single-layer mesh structure, the mesh of the composite anti-penetration structure layer is arranged in a honeycomb shape, and is woven by two aramid fiber filaments and one high-elasticity TPU fiber filament.

[0010] The utility model has the advantages of the following:

[0011] 1. The reinforcing frame formed on both sides of the outer wall of the tire significantly enhances the strength and stability of the tire side, and the plurality of reinforcing strips on each side are evenly distributed at equal angles with the tire axis as the center. This distribution makes the tire side force more uniform, avoids local stress concentration, further improves the strength and durability of the tire side, enables the tire side to effectively resist deformation when subjected to severe deformation pressure, reduces the occurrence of faults such as cord layer rupture, and ensures driving safety.

[0012] 2. The tire made of polyurethane material has good air tightness, which helps to maintain the stability of the internal air pressure of the tire, reduces the influence of air pressure change on the performance of the tire and the handling of the vehicle, and prolongs the service life of the tire.

[0013] 3. The high strength of aramid fiber forms a solid protective layer on the tire side, effectively preventing sharp objects from piercing the tire side; the high-elasticity TPU fiber has strong tear resistance, which can further improve the puncture resistance of the tire side. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a reinforcing ring schematic diagram of the utility model;

[0016] Figure 3 It is a schematic diagram of the rubber layer of the utility model;

[0017] Figure 4 It is a schematic diagram of the steel wire core of the utility model;

[0018] Figure 5 It is a schematic diagram of the aramid fiber of the utility model;

[0019] Figure 6 It is a schematic diagram of the composite anti-puncture structure layer of the utility model.

[0020] Reference signs: 1, composite anti-puncture structure layer; 2, reinforcing ring; 3, reinforcing strip; 4, aramid fiber; 5, high-elasticity TPU fiber; 6, steel wire core; 7, rubber layer. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0022] A high air tightness inflatable polyurethane tire, comprising a tire made of polyurethane material, the high molecular chain of the polyurethane is closely arranged, the intermolecular gap is extremely small, and gas molecules are difficult to penetrate, and the air permeability is only 1 / 10 to 1 / 20 of that of natural rubber, thereby significantly reducing the probability of slow gas penetration; the tire tread is provided with block-shaped patterns and longitudinal patterns;

[0023] The tire sidewall is embedded with a composite anti-penetration structure layer 1, and reinforcing frames are formed on both sides of the outer wall of the tire and are integrally formed with the tire.

[0024] The reinforcing frame is composed of a plurality of reinforcing rings 2 arranged concentrically and attached to the outer wall of the tire, and a plurality of reinforcing strips 3 sequentially penetrating and connecting all the reinforcing rings 2, the reinforcing strips 3 being attached to the outer wall of the tire, and the center of the reinforcing ring 2 coinciding with the tire axis.

[0025] The reinforcing ring 2 and the reinforcing strip 3 are both composed of an outer rubber layer 7 and a steel wire core 6 wrapped inside the rubber layer 7, the steel wire core 6 being made of a plurality of high-carbon structural steel spirally wound, and the rubber layer 7 and the steel wire core 6 on the outside of all the reinforcing rings 2 and the reinforcing strips 3 being integrally arranged respectively; the plurality of reinforcing strips 3 on each side are distributed at equal angles with the tire axis as the center.

[0026] The composite anti-penetration structure layer 1 is a single-layer mesh structure, the mesh of the composite anti-penetration structure layer 1 is arranged in a honeycomb shape, and is woven by two aramid fiber filaments 4 and one high-elasticity TPU fiber filament 5.

[0027] The working principle of the utility model:

[0028] The composite anti-penetration structure layer 1: aramid fiber provides high strength and high modulus to resist sharp object penetration; TPU fiber enhances flexibility and tear resistance, so that the sidewall can absorb energy by deformation when subjected to impact, avoiding direct penetration; the combination of the rigidity of aramid fiber and the flexibility of TPU fiber enables the sidewall to have both anti-penetration ability and deformation recovery ability. The honeycomb mesh design can disperse impact force and conduct local pressure to the surrounding area, reducing the stress intensity per unit area and improving the anti-penetration performance in combination with material elasticity.

[0029] The reinforcing rings 2 and the reinforcing strips 3 forming the reinforcing frame form a three-dimensional support grid, when the sidewall is subjected to deformation pressure, the reinforcing frame disperses stress to the entire sidewall through the high tensile resistance of the steel wire core 6, avoiding local stress concentration leading to the rupture of the cord layer. The rubber layer 7 provides cushioning to reduce the damage of rigid impact to the sidewall.

[0030] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A high airtightness pneumatic polyurethane tire, comprising a tire made of polyurethane material, characterized in that, The tire tread has block patterns and longitudinal grooves; The tire sidewall is embedded with a composite puncture-resistant structural layer (1), and a reinforcing frame is formed on both sides of the tire outer wall. The reinforcing frame consists of multiple concentric reinforcing rings (2) that fit against the tire outer wall, and multiple reinforcing strips (3) that pass through and connect all the reinforcing rings (2) in sequence. The reinforcing strips (3) fit against the tire outer wall, and the center of the reinforcing rings (2) coincides with the tire axis.

2. The high airtightness pneumatic polyurethane tire according to claim 1, characterized in that, The reinforcing ring (2) and the reinforcing strip (3) are both composed of an outer rubber layer (7) and a steel wire core (6) wrapped inside the rubber layer (7). The rubber layer (7) and the steel wire core (6) on the outside of all the reinforcing rings (2) and reinforcing strips (3) are all integrally formed.

3. The high airtightness pneumatic polyurethane tire according to claim 2, characterized in that, The steel wire core (6) is made of multiple spirally wound high-carbon structural steel.

4. The high airtightness pneumatic polyurethane tire according to claim 1, characterized in that, The composite puncture-resistant structural layer (1) is a single-layer mesh structure, woven from two aramid fiber filaments (4) and one high-elasticity TPU fiber filament (5).

5. The high airtightness pneumatic polyurethane tire according to claim 4, characterized in that, The composite puncture-resistant structural layer (1) has a honeycomb-shaped mesh.

6. The high airtightness pneumatic polyurethane tire according to claim 2, characterized in that, The multiple reinforcing strips (3) on each side are distributed at equal angular intervals with the tire axis as the center.

7. The high airtightness pneumatic polyurethane tire according to claim 6, characterized in that, The reinforcing frame and the tire are integrally molded.

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