Inflation-free special run-flat tire based on composite metal rubber supporting framework

Abstract

The invention provides an inflation-free special run-flat tire based on a composite metal rubber support skeleton, which comprises a hub, a plurality of hollow cylindrical hub sleeves are arranged on the circumference of the hub, the hub sleeves are connected with a hydraulic damper through an inner ring sleeve on the hydraulic damper, and the inner ring sleeve is connected with the hydraulic damper through a rubber sleeve. The inner ring sleeve at the other end of the hydraulic damper is also connected with the chain plate sleeve on the stainless steel chain plate, a cavity between the outer surface of the stainless steel chain plate and the metal rubber outer ring is divided into a plurality of cavities through polyether-ether-ketone (PEEK) separation layers, and composite metal rubber with holes filled with polyurethane foaming agents is arranged in each cavity. Lubricating oil is added into each partition cavity, and other structures except the hub are wrapped by the tire cover. By applying the technical scheme, the problem that an air bag type tire is easy to burst can be avoided, and the defect of bumping caused by insufficient vibration reduction capability of a solid tire is overcome.

Description

Technical Field

[0001] The invention relates to the technical field of military special tires, in particular to an inflation-free special explosion-proof tire based on a composite metal rubber support frame. Background Art

[0002] As an important part of military products, military special tires play a huge role in national defense construction. At present, my country's military special tires are mainly supplied to wheeled combat vehicles, command vehicles, transport military vehicles, military aviation, etc. In these special environments, the durability and reliability of tires are particularly important. Among them, the explosion-proof characteristics of tires are a key indicator. Once the tire bursts during driving, it will have unimaginable serious consequences.

[0003] At present, most of the existing conventional explosion-proof tires are still referred to as "run-flat tires", which actually cannot 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. When the air pressure is lost, the sidewall can support the weight of the vehicle to a certain extent, so that it will not be seriously deformed and can continue to travel at a certain speed. However, military vehicles and special equipment are often in more severe environments and even need to withstand damage from artillery fire, bullets, etc. Conventional rubber explosion-proof tires obviously cannot meet the needs, so it is very meaningful to develop a new type of special explosion-proof tire. Summary of the invention

[0004] In view of this, the purpose of the present invention is to provide an airless special explosion-proof tire based on a composite metal rubber support frame, which has strong explosion-proof ability, good heat dissipation and high reliability. The explosion-proof performance of the tire is better, the problem of easy blowout of airbag tires is avoided, and the defect of bumps caused by insufficient vibration reduction ability of solid tires is overcome.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an air-free special explosion-proof tire based on a composite metal rubber support frame, comprising a wheel hub, a plurality of wheel hub sleeves are arranged on the circumference of the wheel hub, the wheel hub sleeves are connected to the hydraulic damper through the inner ring sleeve on the hydraulic damper, the inner ring sleeve at the other end of the hydraulic damper is also connected to the chain plate sleeve on the stainless steel chain plate, the cavity between the outer surface of the stainless steel chain plate and the outer ring of the metal rubber is divided into a plurality of cavities by a polyetheretherketone (PEEK) separation layer, each cavity is provided with a pore, and the pore is filled with composite metal rubber; each of the said cavities is provided with lubricating oil.

[0006] In a preferred embodiment, the pores of the composite metal rubber are filled with polyurethane foaming agent.

[0007] In a preferred embodiment, the hollow cylindrical hub sleeve.

[0008] In a preferred embodiment, the hydraulic damper includes an inner ring sleeve, a spring cover plate, a hydraulic cylinder, a spring and a hydraulic piston.

[0009] Compared with the prior art, the present invention has the following beneficial effects: 1) Through innovative design of the internal structure and material distribution of the tire, polyurethane foaming agent is filled in the pores of the metal rubber, and the high damping capacity of the composite metal rubber is used to resist the impact of external objects, thereby improving the explosion-proof ability of the part of the tire that contacts the outside.

[0010] 2) The lubricating oil in each cavity inside the tire reduces the dry friction between the metal rubber wires, and due to the excellent heat dissipation performance of the metal rubber material itself, the heat dissipation effect of the tire cavity is greatly improved.

[0011] 3) A composite metal rubber elastomer filled with polyurethane foam is placed inside the tire. This supporting elastic structure, combined with the hydraulic damper between the wheel hub and the chain plate, has a good buffering effect on the vibration and deformation transmitted from the tread, overcoming the problems of solid tires being too bumpy and airbag tires being prone to blowouts.

[0012] 4) The air-free explosion-proof tire based on composite metal rubber can be installed in combination with the existing outer tire, and there are no special requirements for the outer tire. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall front cross-sectional structure of an embodiment of the present invention; Figure 2 is a side view of an embodiment of the present invention; Figure 3 is a cross-sectional view taken along line AA of an embodiment of the present invention; Figure 4 It is a schematic diagram of a local enlarged view B of an embodiment of the present invention.

[0014] Explanation of the numbers in the figure: 1-tire outer tire, 2-metal rubber outer ring, 3-composite metal rubber, 31-lubricating oil, 4-stainless steel chain plate, 41-chain plate bushing, 5-wheel hub, 51-wheel hub bushing, 6-hydraulic damper, 61-inner ring bushing, 62 spring cover plate, 63-hydraulic cylinder, 64-spring, 65-hydraulic piston, 7-polyetheretherketone (PEEK) separator. DETAILED DESCRIPTION

[0015] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0016] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0017] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application; as used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or their combinations.

[0018] like Figures 1 to 4 As shown, a non-inflatable special explosion-proof tire based on a composite metal rubber support frame includes a wheel hub 5, 12 hollow cylindrical wheel hub sleeves 51 are arranged on the circumference of the wheel hub, the wheel hub sleeve is connected to the hydraulic damper 6 through the inner ring sleeve 61 on the hydraulic damper 6, the inner ring sleeve at the other end of the hydraulic damper is also connected to the chain plate sleeve 41 on the stainless steel chain plate 4, the cavity between the outer surface of the stainless steel chain plate and the metal rubber outer ring 2 is divided into 12 cavities by a polyetheretherketone (PEEK) partition layer 7, each cavity is provided with a composite metal rubber 3 whose pores are filled with a polyurethane foaming agent, and lubricating oil 31 is added in each partition cavity, and the tire outer cover 1 wraps the other structures except the wheel hub 5.

[0019] The working principle of the present invention is that when the special explosion-proof tire is impacted by foreign objects or hit by sharp objects such as anti-wheel spikes, the metal rubber outer ring 2, the metal wires in the composite metal rubber 3 and the polyurethane foam will generate rebound force, and the composite layer will quickly transform into a high-load state, thereby quickly generating huge reaction force and damping, thereby offsetting the rapid penetration force of the sharp objects or anti-wheel spikes, thereby improving the explosion-proof ability of the tire.

[0020] In this embodiment, the metal rubber is a porous material with high damping performance, and its pores are filled with polyurethane foaming agent to further improve the damping performance of the metal rubber. After being sprayed out, the foamy polyurethane foaming agent will expand rapidly and react with the moisture in the air in the metal rubber pores it contacts to form foam, and the foam has good strength and high adhesion, so that the composite metal rubber 3 has the friction coefficient of both materials at the same time, and the kinetic energy of the impact object is quickly converted into heat energy of the composite metal rubber 3 in a very short time and consumed, which greatly improves the explosion-proof ability of special vehicle tires.

[0021] In this embodiment, the 12 cavities formed by the polyetheretherketone (PEEK) partition layer 7 between the metal rubber outer ring 2 and the stainless steel chain plate 4 help improve the heat dissipation performance of the composite metal rubber 3 during the tire running process. In addition, adding lubricating oil in each cavity helps reduce the friction between the metal rubber and the polyetheretherketone (PEEK) material and the dry friction between the metal rubber wires, and completes the heat transfer to the outside through the metal wires and the stainless steel chain plate, thereby improving the heat dissipation effect of the tire inner cavity.

[0022] In this embodiment, the hydraulic damper is composed of an inner ring sleeve 61, a spring cover plate 62, a hydraulic cylinder 63, a spring 64, and a hydraulic piston 65. The spring is selected with a suitable stiffness and connected in parallel with the hydraulic cylinder and the hydraulic piston to form a hydraulic damper 6 with good buffering effect. There are several hydraulic dampers distributed along the wheel hub, which together with the composite metal rubber elastic support structure provide bearing capacity and elastic force for the tire, reduce the vibration of the tire during driving, and improve the driving safety of special vehicles.

[0023] In this embodiment, the polyetheretherketone (PEEK) separator layer may be made of carbon fiber and resin to form a carbon fiber / resin composite material, so as to further enhance the mechanical properties and improve the heat dissipation performance of the separator layer.

[0024] In this embodiment, the tire casing is still in the form of a traditional tire in appearance, with a thick rubber layer and anti-skid patterns, etc., and no special casing layer is required.

Claims

1. A non-inflatable special explosion-proof tire based on a composite metal rubber support frame, characterized in that: It includes a wheel hub, and a plurality of wheel hub sleeves are arranged on the circumference of the wheel hub. The wheel hub sleeves are connected to the hydraulic damper through the inner ring sleeve on the hydraulic damper. The inner ring sleeve at the other end of the hydraulic damper is also connected to the chain plate sleeve on the stainless steel chain plate. The cavity between the outer surface of the stainless steel chain plate and the metal rubber outer ring is divided into a plurality of cavities by a polyetheretherketone (PEEK) separation layer. A pore is arranged in each cavity, and the pore is filled with composite metal rubber; and lubricating oil is arranged in each of the cavities.

2. The non-inflation special explosion-proof tire based on a composite metal rubber support frame according to claim 1, characterized in that: The pores of the composite metal rubber are filled with a polyurethane foaming agent.

3. The non-inflation special explosion-proof tire based on a composite metal rubber support frame according to claim 1, characterized in that: The hollow cylindrical hub sleeve.

4. The non-inflation special explosion-proof tire based on a composite metal rubber support frame according to claim 1, characterized in that: The hydraulic damper comprises an inner ring sleeve, a spring cover plate, a hydraulic cylinder, a spring and a hydraulic piston.

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