Double-filling type wheel assembly

Abstract

The utility model relates to the technical field of vehicle tires, in particular to a double-filling type wheel assembly which achieves structural compounding, light weight and high weather resistance through an air and polyurethane double-filling technology. The tire is provided with an outer tire and an inner bearing tire, the inner bearing tire is located in the outer tire and fixedly connected with the inner wall of the outer tire in a seamless mode, the inner bearing tire and the outer tire form a compressed air cavity, an adhesive layer is arranged on the side, facing the rim, of the inner bearing tire, the adhesive layer, the inner wall of the outer tire and the rim jointly form a polyurethane foaming cavity, and a compressed air inlet pipe assembly is arranged on the inner bearing tire. An air outlet of the compressed air inlet pipe assembly leads to the compressed air cavity, the polyurethane filling opening leads to the polyurethane foaming cavity, and an air outlet of the inflating valve faces an air inlet of the compressed air inlet pipe assembly. The double-filling type wheel assembly integrates the advantages of a pneumatic tire and a polyurethane tire, is high in wide-temperature adaptability and stable in elastic modulus, avoids the risk of tire burst, and has high application value in medium and low speed vehicles.

Description

Technical Field

[0001] This utility model relates to the field of vehicle tire technology, specifically to a dual-inflation wheel assembly that achieves structural compositeness, lightweighting, and high weather resistance through a dual-inflation process using air and polyurethane, suitable for various scenarios such as low-speed site vehicles, low-speed special vehicles, and engineering vehicles. Background Technology

[0002] The wheel assembly of motor vehicles and non-motor vehicles consists of wheels and tires. The tires in the wheel assemblies of low-speed site vehicles, low-speed special vehicles, and engineering vehicles are basically traditional rubber tires. However, traditional rubber tires have the following defects:

[0003] High dependence on inflation: Conventional pneumatic tires are prone to blowouts and leaks, resulting in high maintenance costs and failing to meet maintenance-free requirements; Insufficient shock absorption: Tires filled with a single material (such as pure rubber or ordinary solid PU tires) struggle to balance shock absorption and load-bearing capacity; Poor low-temperature adaptability: Ordinary polyurethane materials tend to harden in low-temperature environments, leading to decreased tire grip and safety. Existing improvement solutions still suffer from problems such as high weight, complex processes, and low interfacial bonding strength. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a dual-inflation wheel assembly.

[0005] To address the problems mentioned in the background art, the technical solution of this utility model is as follows: A dual-inflation wheel assembly includes a tire and a wheel. The tire has an outer tire and an inner tire. The inner tire is located inside the outer tire and is seamlessly fixed to the inner wall of the outer tire. The inner tire and the outer tire form a compressed air cavity. The wheel has spokes, a rim, a polyurethane filling port, and a valve. An adhesive layer is provided on the side of the inner tire facing the rim. The adhesive layer, the inner wall of the outer tire, and the rim together form a polyurethane foam cavity. A compressed air intake pipe assembly is provided on the inner tire. The compressed air intake pipe assembly is installed on the inner tire. The main body of the compressed air intake pipe assembly is located inside the polyurethane foam cavity. The air inlet of the compressed air intake pipe assembly faces the rim and is in sealed contact with the rim. The air outlet of the compressed air intake pipe assembly leads to the compressed air cavity. The polyurethane filling port leads to the polyurethane foam cavity. The air outlet of the valve faces the air inlet of the compressed air intake pipe assembly.

[0006] In the dual-inflation wheel assembly of this utility model, the adhesive layer is formed by coating the inner wall of the inner tire with a two-component polyurethane adhesive.

[0007] In the dual-inflation wheel assembly described in this utility model, both the outer tire and the inner tire are rubber tires. Compressed air is filled into the compressed air cavity, and polyurethane raw materials are filled into the polyurethane foam cavity for on-site foaming to form a polyurethane microporous elastomer.

[0008] In the dual-inflation wheel assembly of this invention, the two-component polyurethane adhesive forms a chemical bond with the polyurethane microporous elastomer.

[0009] In the dual-inflation wheel assembly of this utility model, the compressed air intake pipe assembly consists of a metal exhaust pipe and a rubber flared intake pipe. The flared end of the rubber flared intake pipe faces the wheel rim, and the other end of the rubber flared intake pipe is sleeved on the metal exhaust pipe.

[0010] In the dual-inflation wheel assembly of this utility model, the polyurethane filling port includes a spiral plug, and the polyurethane filling port and the compressed air intake pipe assembly are dynamically balanced relative to the rotation center of the wheel assembly.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: the dual-inflatable wheel assembly integrates the advantages of pneumatic tires and polyurethane tires, has strong wide temperature adaptability, stable elastic modulus, avoids the risk of tire blowout, and has great application value in low and medium speed vehicles. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments. The accompanying drawings show:

[0013] Figure 1 This is a structural schematic diagram of an embodiment of the dual-inflation wheel assembly of this utility model;

[0014] Figure 2 yes Figure 1 A schematic diagram of the AA cross-sectional structure of the embodiment;

[0015] Figure 3 yes Figure 1 A schematic diagram of the tire structure;

[0016] Figure 4 yes Figure 1 A schematic diagram of the wheel assembly structure;

[0017] Figure 5 yes Figure 1 A schematic diagram of the AA cross-sectional structure of a tire;

[0018] Figure 6 yes Figure 1 A cross-sectional structural diagram of the wheel assembly AA.

[0019] The names corresponding to the numbers in the attached diagram are as follows:

[0020] 1-Wheel, 2-Tire, 3-Rim, 10-Valve Nozzle, 11-Polyurethane Injection Port, 12-Polyurethane Foaming Chamber, 20-Outer Tire, 21-Inner Tire, 22-Compressed Air Intake Pipe Assembly, 23-Polyurethane Microporous Elastomer, 24-Adhesive Layer, 25-Compressed Air, 26-Compressed Air Chamber, 220-Metal Exhaust Pipe, 221-Rubber Trumpet-shaped Intake Pipe. Detailed Implementation

[0021] To further illustrate the technical means and effects adopted by this utility model to achieve the above-mentioned objectives, the specific embodiments, structures, features, and effects of this utility model are described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described in this utility model are merely illustrative and are not intended to limit the scope of this utility model.

[0022] like Figures 1 to 6 The dual-inflatable wheel assembly of this utility model embodiment shown includes a tire 2 and a wheel 1. The tire 2 has an outer tire 20 and an inner tube 21. The inner tube 21 is located inside the outer tire 20 and is seamlessly fixed to the inner wall of the outer tire 20. The inner tube 21 and the outer tire 20 form a compressed air cavity 26. The wheel 1 has spokes, a rim 3, a polyurethane filling port 11, and a valve stem 10. An adhesive layer 24 is provided on the side of the inner tube 21 facing the rim 3. The adhesive layer 24, together with the inner wall of the outer tire 20 and the rim 3, forms a polyurethane foam cavity 1. 2. The inner tube 21 is provided with a compressed air intake pipe assembly 22. The compressed air intake pipe assembly 22 is installed on the inner tube 21. The main body of the compressed air intake pipe assembly 22 is located in the polyurethane foam cavity 12. The air inlet of the compressed air intake pipe assembly 22 faces the rim 3 and is in sealed contact with the rim 3. The air outlet of the compressed air intake pipe assembly 22 leads to the compressed air cavity 26. The polyurethane filling port 11 leads to the polyurethane foam cavity 12. The air outlet of the valve 10 faces the air inlet of the compressed air intake pipe assembly 22.

[0023] like Figure 1 , Figure 2 , Figure 5 As shown, in this embodiment, the adhesive layer 24 is formed by coating the inner wall of the inner bearing 21 with a two-component polyurethane adhesive, and the thickness of the adhesive layer 24 is less than 3 mm.

[0024] like Figure 1 , Figure 2 , Figure 3 , Figure 5 As shown, in this embodiment, both the outer tire 20 and the inner tire 21 are rubber tires. The compressed air cavity 26 is filled with compressed air 25, and the polyurethane foam cavity 12 is filled with polyurethane raw materials for on-site foaming to form a polyurethane microporous elastomer 23.

[0025] like Figure 1 , Figure 2 , Figure 5 As shown, in this embodiment, the two-component polyurethane adhesive forms a chemical bond with the polyurethane microporous elastomer 23.

[0026] like Figure 2 , Figure 5 As shown, in this embodiment, the compressed air intake pipe assembly 22 consists of a metal exhaust pipe 220 and a rubber flared intake pipe 221. The flared end of the rubber flared intake pipe 221 faces the rim 3, and the other end of the rubber flared intake pipe 221 is fitted onto the metal exhaust pipe 220.

[0027] like Figure 2 , Figure 5 , Figure 6 As shown, in this embodiment, the polyurethane filling port 11 includes a spiral plug, and the polyurethane filling port 11 and the compressed air intake pipe assembly 22 are dynamically balanced relative to the rotation center of the wheel assembly.

[0028] The embodiments shown in the above figures are merely preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent or similar changes made based on the principles, shapes, and structures of this utility model should be included within the scope of protection of this utility model.

Claims

1. A dual-charged wheel assembly, characterized by: The application relates to a tire and a wheel, the tire is provided with an outer tire and an inner tire, the inner tire is fixedly connected with the inner wall of the outer tire, the inner tire and the outer tire form a compressed air cavity, the wheel is provided with spokes, a rim, a polyurethane filling port and a valve, the inner tire is provided with an adhesive layer on the side facing the rim, the adhesive layer, the inner wall of the outer tire and the rim jointly form a polyurethane foaming cavity, the inner tire is provided with a compressed air inlet pipe assembly, the compressed air inlet pipe assembly is installed on the inner tire, the main body of the compressed air inlet pipe assembly is located in the polyurethane foaming cavity, the air inlet of the compressed air inlet pipe assembly faces the rim and is in sealed contact with the rim, the air outlet of the compressed air inlet pipe assembly is connected with the compressed air cavity, the polyurethane filling port is connected with the polyurethane foaming cavity, and the air outlet of the valve faces the air inlet of the compressed air inlet pipe assembly.

2. A dual-charged wheel assembly as in claim 1, wherein: The adhesive layer is formed by coating a two-component polyurethane adhesive on the inner wall of the inner tire.

3. A dual-charged wheel assembly as in claim 1, wherein: The outer tire and the inner tire are rubber tires, the compressed air cavity is filled with compressed air, and the polyurethane foaming cavity is filled with polyurethane raw materials to be foamed on site and form a polyurethane microporous elastomer.

4. A dual-charged wheel assembly as in claim 2, wherein: The two-component polyurethane adhesive is chemically bonded with the polyurethane microporous elastomer.

5. A dual-charged wheel assembly as in claim 1, wherein: The compressed air inlet pipe assembly is composed of a metal air outlet pipe and a rubber horn inlet pipe, the horn end of the rubber horn inlet pipe faces the rim, and the other end of the rubber horn inlet pipe is sleeved on the metal air outlet pipe.

6. A dual-charged wheel assembly as in claim 1, wherein: The polyurethane filling port comprises a screw plug, and the polyurethane filling port and the compressed air inlet pipe assembly are dynamically balanced relative to the rotation center of the wheel assembly.

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