Multi-airbag type special run-flat tire based on composite metal rubber

Abstract

The invention provides a multi-airbag type special run-flat tire based on composite metal rubber, a tire body (2) of the tire takes an elastic porous composite metal rubber structure (3) at the inner side of the tire as a supporting framework, the porous composite metal rubber structure is annular, the inner side of the porous composite metal rubber structure is connected with a rubber protection ring (4), and the rubber protection ring (4) is connected with a rubber sleeve (5). A plurality of air bag grooves in which air bags are arranged are formed between the porous composite metal rubber structure and the rubber protection ring; a plurality of cavity structures (10) are further arranged in the porous composite metal rubber structure, and the distribution area of the cavity structures is located on the outer side of the air bag distribution area. The cavity structure is filled with high-damping filler. The explosion-proof tire is high in explosion-proof capacity, high in reliability and simple in process, and the excellent characteristics of high damping, strong supporting, wear resistance and reliability of the composite metal rubber are utilized, so that the tire can still keep high stability under strong external impact.

Description

Technical Field

[0001] The invention relates to the technical field of special explosion-proof tires, in particular to a multi-airbag type special explosion-proof tire based on composite metal rubber. Background Art

[0002] As an indispensable part of the vehicle, tires play an important role in transportation. Their performance has a direct relationship with the vehicle's power, braking, driving stability, smoothness, off-road performance and fuel economy. In recent years, some new explosion-proof tires have appeared on the market. Compared with ordinary tires, explosion-proof tires have higher stability and reliability. After a tire is punctured, it can still maintain a certain driving stability of the vehicle, greatly reducing the probability of serious accidents caused by tire blowouts.

[0003] At present, the existing conventional explosion-proof tires cannot actually prevent tire blowouts or air leaks. The reason why this type of tire does not collapse immediately after being deflated is that it has a thickened tire sidewall, which can support the weight of the vehicle to a certain extent, so that it will not be seriously deformed. However, when the vehicle is heavy, even with a thickened sidewall, it cannot support the weight of the vehicle, and will lose its supporting ability, making it impossible for the vehicle to move forward smoothly. At the same time, special vehicles and equipment are often in more severe environments, and even need to withstand damage from artillery fire, bullets, etc. Conventional rubber explosion-proof tires cannot withstand damage and obviously cannot meet actual needs. Therefore, it is of great significance to develop a new type of special explosion-proof tire.

[0004] As a new type of homogeneous elastic porous material, metal rubber has both elasticity and damping properties similar to those of rubber materials and the excellent properties of metal materials. It is widely used in vibration isolation, vibration reduction, sealing, noise reduction, etc. By utilizing the excellent high damping and strong support characteristics of metal rubber, a special explosion-proof tire with better explosion-proof performance and higher reliability can be designed. Summary of the invention

[0005] The present invention proposes a multi-airbag special explosion-proof tire based on composite metal rubber, which has strong explosion-proof ability, high reliability and simple process. The excellent characteristics of high damping, strong support, wear resistance and reliability of composite metal rubber are utilized to enable the tire to maintain high stability under strong external impact; by designing multiple independent airbags distributed in horizontal rows, after the tire is ruptured by a strong impact from an external object, the original supporting performance can be maintained with the help of other intact airbags, thereby improving its anti-impact and explosion-proof capabilities and ensuring that the vehicle can travel smoothly and safely.

[0006] The present invention adopts the following technical solutions.

[0007] A multi-airbag special explosion-proof tire based on composite metal rubber, wherein the tire carcass (2) uses an elastic porous composite metal rubber structure (3) on the inner side of the tire as a support frame, the porous composite metal rubber structure is annular, the inner side of the porous composite metal rubber structure is connected to a rubber protective ring (4), and a plurality of airbag grooves with built-in airbags are provided between the porous composite metal rubber structure and the rubber protective ring; a plurality of cavity structures (10) are also provided inside the porous composite metal rubber structure, and the distribution area of ​​the cavity structures is located on the outer side of the airbag distribution area; and the cavity structures are filled with high-damping fillers.

[0008] The high damping filler is a polymer material polyurethane with high wear resistance, high tensile tear strength, strong deformation recovery ability, low temperature resistance, UV resistance and long service life.

[0009] The method for preparing the porous composite metal rubber structure is specifically as follows: vacuum infiltration composite the metal rubber elastomer with a cavity structure with the polymer material polyurethane, and fill the polyurethane into the pores and cavities of the metal rubber elastomer by vacuum infiltration to form a polyurethane-metal rubber composite.

[0010] The preparation method of the cavity structure in the metal rubber elastomer is as follows: a ring-shaped flat cylindrical blank is made of high-damping, strong-support, wear-resistant and reliable metal rubber; during the blank forming process, a plurality of hard hollow rubber tubes are arranged inside the blank; after the blank is stamped into a metal rubber blank, it is quenched within the high temperature resistance range of the metal rubber to melt the hard hollow rubber tube embedded inside; and finally, it is cleaned and dried to obtain a metal rubber elastic part with a cavity structure.

[0011] In the process of preparing the cavity structure in the metal rubber elastomer, six hard hollow rubber tubes are arranged inside the blank, and after the hard hollow rubber tubes embedded inside are melted away, ultrasonic cleaning is used for cleaning, and electric heating blast drying is used for drying.

[0012] The airbags in the airbag grooves include large airbags (9) and small airbags (8). An inflation port for inflation is left on the surface of the airbags. After the airbags are inflated, they are installed in the airbag grooves between the rubber protective ring and the composite metal rubber. The airbags are independently arranged in a horizontal row.

[0013] The large airbags and small airbags are both annular airbags, two of which are arranged in number. The two large airbags are adjacent to each other, and the two small airbags are separately arranged on both sides of the large airbag distribution area to form a protective support structure for the tire. If the tire is punctured by an external object and causes the small airbag to rupture, the tire uses the large airbag to ensure that the overall air pressure and center of gravity of the tire remain relatively stable, thereby maintaining stable operation of the tire over a long distance.

[0014] The porous composite metal rubber structure also includes a metal rubber side wing (7) bonded to the tire carcass rubber side wall, the metal rubber side wing being used to enhance the explosion-proof and impact-resistant capabilities of the tire side wall; An outer tread pattern (1) is provided at the outer edge region of the tire body.

[0015] A ring-shaped wheel hub (5) is provided in the middle region of the tire, and a wheel hub steel ring (6) is provided at the inner edge of the wheel hub.

[0016] The rubber protective ring is an annular structure made of silicone rubber material, the inner edge area of ​​which is tightly connected to the outer ring of the wheel hub, and the outer edge area is provided with a groove for placing the airbag, which forms a positioning structure for the airbag and a protective structure for the airbag.

[0017] The present invention proposes a multi-airbag special explosion-proof tire based on composite metal rubber with strong explosion-proof ability, high reliability and simple process. Through the excellent characteristics of high damping, strong support, wear resistance and reliability of the composite metal rubber, the tire can still maintain high stability under strong external impact; through the design of multiple independent horizontally distributed airbags, after the tire is ruptured by a strong impact from an external object, it can maintain the original support performance with the help of other intact airbags, thereby improving its impact and explosion-proof capabilities and ensuring that the vehicle can travel smoothly and safely.

[0018] Compared with the prior art, the present invention has the following beneficial effects: 1. Through the innovative design of the tire structure, the elastic porous composite metal rubber material is introduced into the tire structure as the tire support frame. The excellent high damping performance of the metal rubber is utilized to not only enhance the tire's support, but also greatly enhance the tire's explosion-proof and impact-resistant capabilities; 2. Through the design of multiple independent horizontally distributed airbags, even if the explosion-proof tire is ruptured by external impact, the other intact airbags can still maintain the original support performance to the greatest extent, ensuring that the vehicle can continue to drive smoothly and safely; 3. The combined structural design of conventional outer tire and composite metal rubber keeps the tire manufacturing process basically unchanged, simplifies the production process and reduces the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments: Attached Figure 1 It is a main cross-sectional schematic diagram of the explosion-proof tire of the present invention; Attached Figure 2 Schematic diagram of the explosion-proof tire of the present invention in side view and cross-section; Attached Figure 3 It is a partial enlarged schematic diagram of the explosion-proof tire of the present invention; Explanation of the numbers in the figure: 1-tire pattern, 2-tire body, 3-composite metal rubber structure, 4-rubber protective ring, 5-wheel hub, 6-wheel hub steel ring, 7-metal rubber side wing, 8-small airbag, 9-large airbag, 10-cavity structure. DETAILED DESCRIPTION

[0020] The specific embodiments of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention.

[0021] As shown in the figure, a multi-airbag special explosion-proof tire based on composite metal rubber, wherein the tire carcass 2 uses an elastic porous composite metal rubber structure 3 on the inner side of the tire as a supporting skeleton, the porous composite metal rubber structure is annular, and the inner side of the porous composite metal rubber structure is connected to a rubber protective ring 4, and a plurality of airbag grooves with built-in airbags are provided between the porous composite metal rubber structure and the rubber protective ring; a plurality of cavity structures 10 are also provided inside the porous composite metal rubber structure, and the distribution area of ​​the cavity structures is located on the outer side of the airbag distribution area; and the cavity structures are filled with high-damping fillers.

[0022] The high damping filler is a polymer material polyurethane with high wear resistance, high tensile tear strength, strong deformation recovery ability, low temperature resistance, UV resistance and long service life.

[0023] The method for preparing the porous composite metal rubber structure is specifically as follows: vacuum infiltration composite the metal rubber elastomer with a cavity structure with the polymer material polyurethane, and fill the polyurethane into the pores and cavities of the metal rubber elastomer by vacuum infiltration to form a polyurethane-metal rubber composite.

[0024] The preparation method of the cavity structure in the metal rubber elastomer is as follows: a ring-shaped flat cylindrical blank is made of high-damping, strong-support, wear-resistant and reliable metal rubber; during the blank forming process, a plurality of hard hollow rubber tubes are arranged inside the blank; after the blank is stamped into a metal rubber blank, it is quenched within the high temperature resistance range of the metal rubber to melt the hard hollow rubber tube embedded inside; and finally, it is cleaned and dried to obtain a metal rubber elastic part with a cavity structure.

[0025] In the process of preparing the cavity structure in the metal rubber elastomer, six hard hollow rubber tubes are arranged inside the blank, and after the hard hollow rubber tubes embedded inside are melted away, ultrasonic cleaning is used for cleaning, and electric heating blast drying is used for drying.

[0026] The airbags in the airbag groove include a large airbag 9 and a small airbag 8. An inflation port for inflation is reserved on the surface of the airbag. After the airbag is inflated, it is installed in the airbag groove between the rubber protective ring and the composite metal rubber. Each airbag is independently distributed in a horizontal row.

[0027] The large airbags and small airbags are both annular airbags, two of which are arranged in number. The two large airbags are adjacent to each other, and the two small airbags are separately arranged on both sides of the large airbag distribution area to form a protective support structure for the tire. If the tire is punctured by an external object and causes the small airbag to rupture, the tire uses the large airbag to ensure that the overall air pressure and center of gravity of the tire remain relatively stable, thereby maintaining stable operation of the tire over a long distance.

[0028] The porous composite metal rubber structure also includes a metal rubber side wing 7 which is attached to the tire carcass rubber side wall, and the metal rubber side wing is used to enhance the explosion-proof and impact-resistant capabilities of the tire side wall; A tire pattern 1 is provided at the outer edge area of ​​the tire body.

[0029] An annular wheel hub 5 is provided in the middle area of ​​the tire, and a wheel hub steel ring 6 is provided at the inner edge of the wheel hub.

[0030] The rubber protective ring is an annular structure made of silicone rubber material, the inner edge area of ​​which is tightly connected to the outer ring of the wheel hub, and the outer edge area is provided with a groove for placing the airbag, which forms a positioning structure for the airbag and a protective structure for the airbag.

[0031] Embodiment 1: like Figures 1 to 3 As shown, a multi-airbag explosion-proof tire based on composite metal rubber, the specific features of which include a tire pattern 1, a tire body 2, a composite metal rubber 3, a rubber protective ring 4, a wheel hub 5, a wheel hub steel ring 6, a metal rubber side wing 7, a small airbag 8, a large airbag 9, and a cavity 10; Preferably, the general structure and preparation process of the wheel hub 5, wheel hub steel rim 6, tire body 2 and tire pattern 1 are not much different from those of existing common tires, and can be produced by using existing tire production industrial lines. In addition, the tire body 2 and wheel hub 5 can be assembled by conventional tire disassembly and assembly machines, which will not increase the difficulty of assembly. Preferably, the composite metal rubber 3 is composited with polyurethane material and metal rubber elastomer. The metal rubber material has excellent characteristics of high damping, strong support, wear resistance and reliability. A metal rubber elastomer with a cavity structure can be obtained by arranging a hard hollow rubber tube in the process of blank preparation and performing quenching treatment after stamping. The polyurethane material has excellent characteristics such as high wear resistance, high tensile tear strength, strong deformation recovery ability, low temperature resistance, UV resistance, and long service life, and is widely used in the field of vibration reduction and noise reduction. The composite metal rubber 3 is filled with polyurethane in the pores and cavities 10 of the metal rubber elastomer by vacuum infiltration method as a high damping filler in the composite metal rubber 3. The composite metal rubber 3 plays a role of strong support and high load-bearing as a supporting skeleton in the tire structure, so that the tire can still maintain high stability under strong external impact. Preferably, the composite metal rubber 3 also has a metal rubber side wing 7, which can be attached to the tire carcass rubber side wall, greatly enhancing the explosion-proof and impact-resistant capabilities of the tire side wall; Preferably, the large airbag 9 and the small airbag 8 are each provided with two, each airbag is independently arranged in a horizontal row, and the two small airbags 8 are arranged on both sides of the large airbag 9 to play a protective and supporting role. In extreme cases, when the tire is punctured by an impact of a foreign object and causes the small airbag 8 to rupture, the large airbag 9 can still ensure that the overall air pressure and center of gravity of the tire remain relatively stable, so that the tire can still run stably for a long distance. The small airbag 8 and the large airbag 9 are made of ordinary thin rubber into a ring shape, and an inflation port for inflation is reserved on the airbag. After inflation, it is installed in the airbag groove between the rubber protective ring 4 and the composite metal rubber 3; Preferably, the rubber protective ring 4 is made of a silicone rubber material with strong damping performance, good rebound performance, good sealing performance, and high and low temperature resistance. One end is tightly connected to the hub steel ring 6, and the other end is designed with four grooves for placing the airbags 8 and 9, which can position the airbags in the correct position and protect the airbags at the same time. Embodiment 2: The tire carcass and wheel hub are assembled together by a tire disassembly and assembly machine and then installed on the axle. During operation, the high damping and strong support characteristics of the composite metal rubber skeleton can quickly dissipate the energy of the external impact on the tire, making the vehicle run more smoothly. When the outer rubber layer of the tire is ruptured by the impact of an external sharp object, the strong support characteristics of the composite metal rubber can still support the weight of the vehicle body and consume the energy of the impact object. In extreme cases, if the impact object penetrates into the tire and causes the small airbag on the side to rupture, the intact large airbag can still ensure that the overall air pressure and center of gravity of the tire remain relatively stable, so that the tire can still run stably for a long distance.

[0032] Embodiment 3: A multi-airbag special explosion-proof tire based on composite metal rubber, comprising a tire pattern, a tire body, a composite metal rubber, a rubber protective ring, a wheel hub, a wheel hub steel ring, a small airbag, a large airbag, and a cavity; the tire pattern, the tire body, the composite metal rubber, the large airbag, the small airbag, the rubber protective ring, and the wheel hub are sequentially arranged in a radial direction; In this example, the outer tire pattern is on the outer ring of the tire body, which can effectively improve the grip of the tire and prevent the tire from slipping on wet, gravel and other roads; the wheel hub, wheel hub steel ring, tire body and tire pattern are not much different from the existing ordinary molded tires, and the general structure and process flow are basically unchanged, avoiding the need to redesign the production line, and effectively reducing the production and processing costs of the composite metal rubber; The composite metal rubber is a polyurethane-metal rubber composite formed by vacuum infiltration of a metal rubber elastomer with a cavity structure and a polymer material polyurethane, which has the excellent characteristics of high load-bearing, superelasticity, wear resistance and durability of the metal rubber elastomer and high wear resistance and tensile tear strength of the polyurethane material; the metal rubber with a cavity structure is finally formed into an annular flat cylinder by a blank preparation process. During the blank forming process, six hard hollow rubber hoses are arranged inside the blank. After the metal rubber blank is stamped and formed, the metal rubber molded part is quenched by virtue of the high temperature resistance of the metal rubber, and the hard hollow rubber hoses embedded inside are melted away. Finally, ultrasonic cleaning and electric blast drying are performed to obtain a metal rubber part with a cavity structure; the outer ring of the composite metal rubber is tightly connected to the inner tread of the tire carcass through the combination of polyurethane material, and the composite metal rubber also has a sidewall structure, which can be fitted with the rubber sidewall of the tire carcass, greatly enhancing the explosion-proof and impact-resistant capabilities of the tire sidewall; The large airbag and the small airbag are made of ordinary thin rubber into a ring shape, and an inflation port for inflation is reserved on the airbag. After inflation, they are installed in the airbag groove between the rubber protective ring and the composite metal rubber. Each airbag is independently arranged in a horizontal row, and two small airbags are arranged on both sides of the two large airbags to play a protective and supporting role. In extreme cases, when the tire is punctured by an external impact and causes the small airbag to rupture, the large airbag can still ensure that the overall air pressure and center of gravity of the tire remain relatively stable, so that the tire can still run stably for a long distance; The rubber protective ring is made of silicone rubber material, one end of which is tightly connected to the outer ring of the wheel hub, and the other end is designed with a groove for placing the airbag, which can position the airbag in the correct position and protect the airbag at the same time.

[0033] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field of the present invention, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should all fall within the scope of protection of the present invention.

Claims

1. A multi-airbag special explosion-proof tire based on composite metal rubber, characterized by: The tire carcass (2) uses an elastic porous composite metal rubber structure (3) on the inner side of the tire as a support frame. The porous composite metal rubber structure is annular and is connected to a rubber protective ring (4) on the inner side of the porous composite metal rubber structure. A plurality of airbag grooves with built-in airbags are provided between the porous composite metal rubber structure and the rubber protective ring. A plurality of cavity structures (10) are also provided inside the porous composite metal rubber structure. The distribution area of ​​the cavity structures is located on the outer side of the airbag distribution area. The cavity structures are filled with a high damping filler.

2. The multi-airbag special explosion-proof tire based on composite metal rubber according to claim 1, characterized in that: The high damping filler is a polymer material polyurethane with high wear resistance, high tensile tear strength, strong deformation recovery ability, low temperature resistance, UV resistance and long service life.

3. The multi-airbag special explosion-proof tire based on composite metal rubber according to claim 1, characterized in that: The method for preparing the porous composite metal rubber structure is specifically as follows: vacuum infiltration composite the metal rubber elastomer with a cavity structure with the polymer material polyurethane, and fill the polyurethane into the pores and cavities of the metal rubber elastomer by vacuum infiltration to form a polyurethane-metal rubber composite.

4. The multi-airbag special explosion-proof tire based on composite metal rubber according to claim 3, characterized in that: The preparation method of the cavity structure in the metal rubber elastomer is as follows: a ring-shaped flat cylindrical blank is made of high-damping, strong-support, wear-resistant and reliable metal rubber; during the blank forming process, a plurality of hard hollow rubber tubes are arranged inside the blank; after the blank is stamped into a metal rubber blank, it is quenched within the high temperature resistance range of the metal rubber to melt the hard hollow rubber tube embedded inside; and finally, it is cleaned and dried to obtain a metal rubber elastic part with a cavity structure.

5. The multi-airbag special explosion-proof tire based on composite metal rubber according to claim 4, characterized in that: In the process of preparing the cavity structure in the metal rubber elastomer, six hard hollow rubber tubes are arranged inside the blank, and after the hard hollow rubber tubes embedded inside are melted away, ultrasonic cleaning is used for cleaning, and electric heating blast drying is used for drying.

6. The multi-airbag special explosion-proof tire based on composite metal rubber according to claim 1, characterized in that: The airbags in the airbag grooves include large airbags (9) and small airbags (8). An inflation port for inflation is left on the surface of the airbags. After the airbags are inflated, they are installed in the airbag grooves between the rubber protective ring and the composite metal rubber. The airbags are independently arranged in a horizontal row.

7. The multi-airbag special explosion-proof tire based on composite metal rubber according to claim 6, characterized in that: The large airbags and small airbags are both annular airbags, two of which are arranged in number. The two large airbags are adjacent to each other, and the two small airbags are separately arranged on both sides of the large airbag distribution area to form a protective support structure for the tire. If the tire is punctured by an external object and causes the small airbag to rupture, the tire uses the large airbag to ensure that the overall air pressure and center of gravity of the tire remain relatively stable, thereby maintaining stable operation of the tire over a long distance.

8. The multi-airbag special explosion-proof tire based on composite metal rubber according to claim 1, characterized in that: The porous composite metal rubber structure also includes a metal rubber side wing (7) bonded to the tire carcass rubber side wall, the metal rubber side wing being used to enhance the explosion-proof and impact-resistant capabilities of the tire side wall; An outer tread pattern (1) is provided at the outer edge region of the tire body.

9. The multi-airbag special explosion-proof tire based on composite metal rubber according to claim 1, characterized in that: A ring-shaped wheel hub (5) is provided in the middle region of the tire, and a wheel hub steel ring (6) is provided at the inner edge of the wheel hub.

10. The multi-airbag special explosion-proof tire based on composite metal rubber according to claim 9, characterized in that: The rubber protective ring is an annular structure made of silicone rubber material, the inner edge area of ​​which is tightly connected to the outer ring of the wheel hub, and the outer edge area is provided with a groove for placing the airbag, which forms a positioning structure for the airbag and a protective structure for the airbag.

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