Tire outer support and vehicle

Abstract

The application discloses a tire outer support body, which comprises a mounting part, a supporting part and a pressure bearing part. The mounting part and the pressure bearing part are oppositely arranged along the axial direction of the tire outer support body. The supporting part is connected to the mounting part and the pressure bearing part. The diameter of the pressure bearing part is larger than that of the mounting part. The pressure bearing part comprises a rigid layer and a flexible layer. The rigid layer is connected to the supporting part. The flexible layer is arranged on the peripheral surface of the rigid layer along the circumferential direction of the tire outer support body to form a pressure bearing surface of the pressure bearing part. The mounting part is configured to be coaxially arranged on the axle of the vehicle. The pressure bearing part protrudes from the wheel along the radial direction of the tire outer support body. After the tire on the wheel is deflated, the pressure bearing surface can be in contact with the ground. The technical scheme provided by the application can solve the problems of low safety, large weight and damage to the road surface of the existing tire outer support body.

Description

Technical Field

[0001] This application relates to the field of safety tire technology for rail transit wheels, and more specifically, to a tire outer support and a vehicle. Background Technology

[0002] Given the increasing prevalence of safety tires in rail transit, and considering the relatively complex installation of internal support structures, external support structures are undoubtedly the best choice for smaller tires where aesthetic requirements are less stringent. Compared to internal support structures, external support structures offer advantages such as simpler structure and manufacturing process, lower cost, and easier installation.

[0003] However, since most tire support structures on the market are made of metal, they are susceptible to corrosion, posing certain safety hazards. Furthermore, the use of metal support structures on the ground generates significant noise and can damage the road surface, leading to unnecessary road maintenance costs in the future. Summary of the Invention

[0004] This application provides a tire external support and a vehicle that can solve the problems of low safety, heavy weight and damage to the road surface caused by existing tire external supports.

[0005] In a first aspect, this application provides a tire outer support body, the tire outer support body including a mounting part, a supporting part and a pressure-bearing part, the mounting part and the pressure-bearing part being disposed opposite to each other along the axial direction of the tire outer support body; the supporting part connecting the mounting part and the pressure-bearing part, the diameter of the pressure-bearing part being larger than the diameter of the mounting part;

[0006] The pressure-bearing part includes a rigid layer and a flexible layer. The rigid layer is connected to the support part, and the flexible layer is disposed on the circumferential surface of the rigid layer along the circumferential direction of the outer tire support body to form the pressure-bearing surface of the pressure-bearing part.

[0007] The mounting portion is configured to be coaxially connected to the axle of the vehicle and the tire outer support body. The pressure-bearing portion protrudes from the wheel so that the pressure-bearing surface can contact the ground after the tire on the wheel is deflated.

[0008] In the above solution, when a vehicle experiences a tire blowout or loses tire pressure and can no longer support the vehicle, the external tire support structure allows the vehicle to continue driving under the support of the pressure-bearing part, reducing the risk of traffic accidents and ensuring vehicle safety. Simultaneously, because the outer periphery of the pressure-bearing part, i.e., the pressure-bearing surface, is composed of a flexible layer, it can make soft contact with the ground like a tire, effectively reducing noise and damage to the ground. Furthermore, because the pressure-bearing part has a soft, low-density flexible layer, it is lightweight.

[0009] According to some embodiments of this application, the longitudinal section of the tire outer support is trumpet-shaped;

[0010] The support portion includes a first portion and a second portion, wherein the end of the first portion away from the second portion is connected to the end face of the mounting portion facing the pressure-bearing portion;

[0011] One end of the second part is connected to the end face of the first part away from the mounting portion and extends radially along the outer tire support body;

[0012] The cross-section of the pressure-bearing part is annular, and the end of the second part away from the first part is connected to the inner ring of the pressure-bearing part.

[0013] In the above solution, by setting the longitudinal section of the tire outer support to be funnel-shaped, the middle of the tire outer support is hollow, which effectively reduces the weight of the tire outer support and reduces the impact on the vehicle's load caused by the installation of the tire outer support. At the same time, since the second part extends radially, when the bearing surface is supported on the ground, it can effectively resist the radial reaction force exerted by the ground on the tire outer support, so that the tire outer support has a strong support effect and ensures the normal driving of the vehicle.

[0014] According to some embodiments of this application, the cross-section of the pressure-bearing part is a rounded rectangle, and along the axial direction of the tire outer support body, the pressure-bearing part is symmetrically arranged with respect to the second part, or the pressure-bearing part is not symmetrically arranged with respect to the second part.

[0015] In the above scheme, the cross-section of the pressure-bearing part is a rounded rectangle. In some embodiments, the cross-section of the pressure-bearing part can be regarded as dumbbell-shaped, with a certain thickness and width, so as to have high rigidity and strength and ensure the support effect for the vehicle. When the pressure-bearing part is symmetrically arranged with respect to the second part, it can be said that the second part is located in the middle of the pressure-bearing part so that the tire outer support body is subjected to uniform force and the support effect is improved. When the pressure-bearing part is not symmetrically arranged with respect to the second part, it can be said that the second part is not located in the middle of the pressure-bearing part.

[0016] According to some embodiments of this application, the radial dimension of the pressure-bearing part in the outer tire support body is h, and the axial dimension of the pressure-bearing part in the outer tire support body is w, satisfying 0.3≤h / w≤0.6.

[0017] In the above scheme, the radial dimension of the pressure-bearing part in the outer tire support body can be the height dimension of the pressure-bearing part, and the axial dimension of the pressure-bearing part in the outer tire support body can be the width dimension of the pressure-bearing part. When 0.3 > h / w, the pressure-bearing part will be too thin, its strength will be reduced, and it will be easily damaged and unable to support the vehicle. When h / w > 0.6, that is, the height-to-width ratio is too large, the stability of the outer tire support body will be poor when supporting, and because the outer tire support body has a certain tilt angle during use, the second part will be subjected to higher shear force, which poses a certain safety hazard. If the overall height and width data are increased, the weight will also increase. Therefore, in this application, h / w is limited to 0.3-0.6, so that the pressure-bearing part has high strength and rigidity, and has a large support area with the ground, ensuring the supporting effect of the outer tire support body on the vehicle.

[0018] According to some embodiments of this application, the mounting part, the support part, and the rigid layer are integrally die-cast.

[0019] In the above solution, the mounting part, the supporting part, and the rigid layer are all rigid structures. The three are integrally die-cast to give the tire outer support body high rigidity and ensure the support effect on the vehicle.

[0020] According to some embodiments of this application, the rigid layer is a carbon fiber reinforced thermosetting resin.

[0021] In the above scheme, the rigid layer is made of carbon fiber reinforced thermosetting resin, which has high strength and low density. Its material specific gravity is less than 1.5, less than 1 / 5 of that of steel, which can effectively reduce the weight of the tire's outer support. In some other embodiments, the rigid layer can be made of steel.

[0022] According to some embodiments of this application, the flexible layer includes a peripheral region and a side region, and the number of side regions is two, with the two side regions respectively disposed at opposite ends of the peripheral region along the axial direction of the tire outer support body;

[0023] The peripheral region is disposed on the peripheral surface of the rigid layer, one of the side regions extends to the end face of the rigid layer facing the mounting portion, and the other side region extends to the end face of the rigid layer away from the mounting portion.

[0024] In the above scheme, the flexible layer not only effectively covers the periphery of the rigid layer, but also partially covers the two end faces of the rigid layer, so as to effectively reduce the risk of the rigid layer coming into contact with the ground or steps on the roadbed, improve the comfort of vehicle driving, and reduce damage to the ground.

[0025] According to some embodiments of this application, the flexible layer is a thermoplastic polyurethane flexible layer or a polyurethane flexible layer, and the specific gravity of the flexible layer is between 1.0 and 2.0.

[0026] The flexible layer has a radial dimension L on the outer support of the tire, which satisfies 1mm≤L≤5mm.

[0027] In the above scheme, the flexible layer can be made of thermoplastic polyurethane or polyurethane, which has good compression resistance, flame retardant function, corrosion resistance, etc., to ensure that the support has high safety.

[0028] According to some embodiments of this application, an adhesive layer is provided between the rigid layer and the flexible layer, and the rigid layer and the flexible layer are bonded together by the adhesive layer;

[0029] The adhesive layer is a high-strength AB adhesive, the adhesive strength of the adhesive layer is P1, and the contact pressure between the pressure-bearing part and the ground is P2, satisfying 0.6≤P1 / P2≤1.2.

[0030] In the above scheme, the rigid layer and the flexible layer are bonded together by an adhesive layer to ensure that the flexible layer can effectively adhere to the rigid layer. Simultaneously, a reasonable adhesive strength ensures the bonding reliability between the rigid and flexible layers, moderately improves the rigidity of both layers, and enhances the wear resistance of the flexible layer. However, if the adhesive strength is too high, unnecessary costs are incurred; if the adhesive strength is too low, the bonding reliability between the rigid and flexible layers cannot be guaranteed, and the wear resistance of the pressure-bearing part cannot be guaranteed. Therefore, some embodiments of this application are based on the actual relationship between the pressure-bearing part and the ground.

[0031] Considering the contact pressure P2 between the two layers, an adhesive layer with a pressure of 0.6 ≤ P1 / P2 ≤ 1.2 is selected to ensure the rationality of cost, the reliability of adhesion, and wear resistance.

[0032] Secondly, this application also provides a vehicle including a tire outer support as described in any of the first aspects; the tire outer support is connected to the axle of the vehicle and is located on the outside of the wheel of the vehicle. Attached Figure Description

[0033] 0 To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0034] 5 Figure 1 This is a schematic diagram of the tire outer support body in some embodiments of this application;

[0035] Figure 2 This is a cross-sectional view of the tire outer support body in some embodiments of this application;

[0036] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0037] Figure 4 This is a schematic diagram of the tire external support, wheel and tire from one perspective in some embodiments of this application;

[0038] 0 Figure 5 This is a schematic diagram of the tire outer support, wheel, and tire from another perspective in some embodiments of this application.

[0039] Icons: 10 - Tire outer support; 11 - Mounting part; 12 - Support part; 120 - First part;

[0040] 121 - Second part; 122 - Weight reduction hole; 13 - Pressure bearing part; 130 - Rigid layer; 131 - Flexible layer;

[0041] 1310 - Circumferential area; 1311 - Side area; x - Axial direction of the outer tire support; y - Radial direction of the outer tire support; z - Circumferential direction of the outer tire support; 20 - Wheel; 21 - Tire. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0043] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0044] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0045] In the description of the embodiments of this application, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly placed when the product of this application is used, or the orientation or positional relationship commonly understood by those skilled in the art. They are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0046] In the description of the embodiments of this application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0047] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0048] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0049] Please see Figures 1-5 , Figure 1 This is a schematic diagram of the tire outer support body in some embodiments of this application; Figure 2 This is a cross-sectional view of the tire outer support body in some embodiments of this application; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram of the tire external support, wheel and tire from one perspective in some embodiments of this application; Figure 5 This is a schematic diagram of the tire outer support, wheel, and tire from another perspective in some embodiments of this application.

[0050] The tire outer support body 10 includes a mounting portion 11, a support portion 12, and a pressure-bearing portion 13. The mounting portion 11 and the pressure-bearing portion 13 are disposed opposite each other along the axial direction x of the tire outer support body. The support portion 12 connects the mounting portion 11 and the pressure-bearing portion 13, and the diameter of the pressure-bearing portion 13 is larger than the diameter of the mounting portion 11. The pressure-bearing portion 13 includes a rigid layer 130 and a flexible layer 131. The rigid layer 130 is connected to the support portion 12, and the flexible layer 131 is disposed along the circumferential direction z of the tire outer support body on the circumferential surface of the rigid layer 130 to form the pressure-bearing surface of the pressure-bearing portion 13.

[0051] The mounting part 11 is configured to be coaxially connected to the axle of the vehicle with the wheel 20, and the pressure bearing part 13 protrudes from the wheel 20 along the radial direction y of the outer tire support so that the pressure bearing surface can contact the ground after the tire 21 on the wheel 20 is deflated.

[0052] In the above solution, when the vehicle experiences a tire blowout or the tire 21 loses pressure and cannot support the vehicle while driving, the vehicle can continue to drive under the support of the pressure-bearing part 13 due to the tire external support body 10, reducing the risk of traffic accidents and ensuring vehicle safety. At the same time, since the outer peripheral surface of the pressure-bearing part 13, i.e. the pressure-bearing surface, is composed of a flexible layer 131, it can make soft contact with the ground like the tire 21, effectively reducing noise and damage to the ground. In addition, since the pressure-bearing part has a soft and low-density flexible layer 131, it is lightweight.

[0053] According to some embodiments of this application, such as Figure 2 The longitudinal section of the tire outer support 10 is trumpet-shaped.

[0054] The support portion 12 includes a first portion 120 and a second portion 121. The end of the first portion 120 away from the second portion 121 is connected to the end face of the mounting portion 11 facing the pressure-bearing portion 13. One end of the second portion 121 is connected to the end face of the first portion 120 away from the mounting portion 11 and extends radially y along the outer tire support body. The pressure-bearing portion 13 has an annular cross-section, and the end of the second portion 121 away from the first portion 120 is connected to the inner ring of the pressure-bearing portion 13.

[0055] In the above solution, by setting the longitudinal section of the tire outer support 10 to be funnel-shaped, the middle of the tire outer support 10 is hollow, which effectively reduces the weight of the tire outer support 10 and reduces the impact on the vehicle's load caused by installing the tire outer support 10. At the same time, since the second part 121 extends radially, when the bearing surface is supported on the ground, it can effectively resist the reaction force exerted by the ground on the tire outer support 10 along the radial y of the tire outer support, so that the tire outer support 10 has a strong support effect and ensures the normal driving of the vehicle.

[0056] In some embodiments, the support portion 12 is provided with weight reduction holes 122.

[0057] In some embodiments, such as Figure 1 , Figure 4 as well as Figure 5 The mounting part 11 can be in the shape of a flange, and its size can correspond to the size of the wheel 20. The mounting part 11 can be fixed to the wheel 20 with bolts so that it is coaxial with the wheel 20.

[0058] According to some embodiments of this application, such as Figure 3The cross-section of the pressure-bearing part 13 is a rounded rectangle. Along the axial direction x of the outer tire support, the pressure-bearing part 13 is symmetrically arranged with respect to the second part 121, or the pressure-bearing part 13 is not symmetrically arranged with respect to the second part 121.

[0059] In the above scheme, the cross-section of the pressure-bearing part 13 is a rounded rectangle. In some embodiments, the cross-section of the pressure-bearing part 13 can be regarded as dumbbell-shaped, with a certain thickness and width, so as to have high rigidity and strength and ensure the support effect for the vehicle. When the pressure-bearing part 13 is symmetrically arranged with respect to the second part 121, it can be said that the second part 121 is located in the middle of the pressure-bearing part 13 so that the tire outer support body 10 is subjected to uniform force and the support effect is improved. When the pressure-bearing part 13 is not symmetrically arranged with respect to the second part 121, it can be said that the second part 121 is not located in the middle of the pressure-bearing part 13.

[0060] According to some embodiments of this application, such as Figure 3 The dimension of the pressure-bearing part 13 in the radial y direction of the outer tire support body is h, and the dimension of the pressure-bearing part 13 in the axial x direction of the outer tire support body is w, satisfying 0.3≤h / w≤0.6.

[0061] In the above scheme, the radial dimension (y) of the pressure-bearing part 13 on the outer tire support body can be the height dimension of the pressure-bearing part 13, and the axial dimension (x) of the pressure-bearing part 13 on the outer tire support body can be the width dimension of the pressure-bearing part 13. When 0.3 > h / w, the pressure-bearing part 13 will be too thin, its strength will be reduced, and it will be easily damaged and unable to support the vehicle. When h / w > 0.6, that is, the height-to-width ratio is too large, the stability of the outer tire support body will be poor when supporting, and because the outer tire support body has a certain tilt angle during use, the shear force on the second part will be higher, which poses a certain safety hazard. If the overall height and width data are increased, the weight will also increase. Therefore, in this application, h / w is limited to 0.3-0.6, so that the pressure-bearing part 13 has high strength and rigidity, and has a large support area with the ground, ensuring the support effect of the outer tire support body 10 on the vehicle.

[0062] According to some embodiments of this application, the mounting part 11, the support part 12, and the rigid layer 130 are integrally die-cast.

[0063] In the above scheme, the mounting part 11, the support part 12 and the rigid layer 130 are all rigid structures. The three are integrally die-cast to make the tire outer support 10 have high rigidity and ensure the support effect on the vehicle.

[0064] According to some embodiments of this application, the rigid layer 130 is a carbon fiber reinforced thermosetting resin.

[0065] In the above scheme, the rigid layer 130 is made of carbon fiber reinforced thermosetting resin, which has high strength and low density. Its material specific gravity is less than 1.5, less than 1 / 5 of that of steel, which can effectively reduce the weight of the tire outer support 10. In some other embodiments, the rigid layer 130 can be made of steel.

[0066] According to some embodiments of this application, such as Figure 3 The flexible layer 131 includes a peripheral area 1310 and a side area 1311. There are two side areas 1311, which are respectively located at opposite ends of the peripheral area 1310 along the axial direction x of the tire outer support.

[0067] A peripheral region 1310 is disposed on the peripheral surface of the rigid layer 130, wherein one side region 1311 extends to the end face of the rigid layer 130 facing the mounting portion 11, and the other side region 1311 extends to the end face of the rigid layer 130 away from the mounting portion 11.

[0068] In some embodiments, the side area 1311 can be unset.

[0069] In the above scheme, the flexible layer 131 not only effectively covers the periphery of the rigid layer 130, but also partially covers the two end faces of the rigid layer 130, so as to effectively reduce the risk of the rigid layer 130 contacting the ground or steps on the roadbed, improve the comfort of vehicle driving, and reduce damage to the ground.

[0070] According to some embodiments of this application, the flexible layer 131 is a thermoplastic polyurethane flexible layer 131 or a polyurethane flexible layer 131, and the specific gravity of the flexible layer 131 is between 1.0 and 2.0; for example Figure 3 The flexible layer 131 has a radial dimension L in the outer y direction of the tire support, which satisfies 1mm≤L≤5mm.

[0071] In the above scheme, the flexible layer 131 can be made of thermoplastic polyurethane or polyurethane, which has good compression resistance and flame retardant and corrosion resistance.

[0072] According to some embodiments of this application, an adhesive layer (not shown in the figure) is provided between the rigid layer 130 and the flexible layer 131, and the rigid layer 130 and the flexible layer 131 are bonded together by the adhesive layer.

[0073] The adhesive layer is a high-strength AB adhesive with an adhesion strength of P1. The contact pressure between the pressure-bearing part 13 and the ground is P2, satisfying 0.6≤P1 / P2≤1.2.

[0074] In the above scheme, the rigid layer 130 and the flexible layer 131 are bonded together by an adhesive layer to ensure that the flexible layer 131 can be effectively attached to the rigid layer 130. At the same time, a reasonable adhesive strength can ensure the bonding reliability of the rigid layer 130 and the flexible layer 131, moderately improve the rigidity of the rigid layer 130 and the flexible layer 131, and improve the wear resistance of the flexible layer 131. However, if the adhesive strength is too high, it will increase unnecessary costs; if the adhesive strength is too low, the bonding reliability of the rigid layer 130 and the flexible layer 131 cannot be guaranteed, and the wear resistance of the pressure-bearing part 13 cannot be guaranteed. Therefore, in some embodiments of this application, based on the actual contact pressure P2 between the pressure-bearing part 13 and the ground, an adhesive layer that satisfies 0.6≤P1 / P2≤1.2 is selected to ensure reasonable cost, bonding reliability, and wear resistance.

[0075] According to some embodiments of this application, this application also provides a vehicle including a tire outer support 10 according to any of the first aspects. The tire outer support 10 is connected to the axle of the vehicle and is located outside the wheel 20 of the vehicle.

[0076] According to some embodiments of this application, please refer to Figures 1-5 Some embodiments of this application provide a tire outer support 10, which is a trumpet-shaped rigid wheel support ring structure. Along the axial x-axis of the tire outer support 10, the tire outer support 10 has a mounting portion 11 and a pressure-bearing portion 13 disposed opposite to each other. The mounting portion 11 is fixed to the outside of the vehicle wheel 20 by bolts. Under normal circumstances, the radial dimension of the pressure-bearing portion 13 is smaller than the dimension of the tire 21 on the wheel 20. That is, under normal circumstances, the vehicle's movement is supported by the tire 21. When the tire 21 deflates, the pressure-bearing portion 13 replaces the tire 21 in supporting the ground, ensuring the normal movement of the vehicle.

[0077] To reduce noise and minimize damage to the ground, the bearing portion 13 has a rigid portion and a flexible portion. The flexible portion is located on the outer periphery of the rigid portion to contact the ground, which can dampen vibrations and reduce the damage to the road surface caused by the support structure.

[0078] The rigid part is a rigid layer 130, which is connected to the mounting part 11 via the support part 12. The rigid layer 130, the support part 12, and the mounting part 11 are integrally die-cast and have no joints. The rigid layer 130 can be made of fiber-reinforced polymer composite material with a specific gravity of less than 1.5, which is less than 1 / 5 of the specific gravity of steel.

[0079] The flexible portion is a flexible layer 131. In some embodiments, the flexible layer 131 may be made of a special coating and processed on the outer peripheral surface of the rigid layer 130 using a spraying process. The material and spraying thickness of the flexible layer 131 can be designed for strength according to different road conditions and vehicle load requirements. In some embodiments, the flexible layer 131 may be a high-performance elastic resin. The specific high-performance elastic resin and thickness of the flexible layer 131 can be designed for strength according to different road conditions and vehicle load requirements. In these embodiments, there is a high adhesive strength between the flexible layer 131 and the rigid layer 130. When the tire outer support 10 is in use, a contact pressure will be generated between the pressure-bearing part 13 and the road surface. The ratio of adhesive strength to contact pressure is between 0.6 and 1.2.

[0080] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A tire external support body, characterized in that, The tire outer support body includes a mounting part, a supporting part, and a pressure-bearing part. Along the axial direction of the tire outer support body, the mounting part and the pressure-bearing part are arranged opposite to each other. The supporting part connects the mounting part and the pressure-bearing part, and the diameter of the pressure-bearing part is larger than the diameter of the mounting part. The pressure-bearing part includes a rigid layer and a flexible layer. The rigid layer is connected to the support part, and the flexible layer is disposed on the circumferential surface of the rigid layer along the circumferential direction of the outer tire support body to form the pressure-bearing surface of the pressure-bearing part. The mounting part, the support part, and the rigid layer are integrally die-cast. The rigid layer is a carbon fiber reinforced thermosetting resin, the flexible layer is a polyurethane flexible layer, the specific gravity of the flexible layer is between 1.0 and 2.0, and an adhesive layer is provided between the rigid layer and the flexible layer, and the rigid layer and the flexible layer are bonded together by the adhesive layer. The adhesive layer is a high-strength AB adhesive, the adhesive strength of the adhesive layer is P1, and the contact pressure between the pressure-bearing part and the ground is P2, satisfying 0.6≤P1 / P2≤1.2; The mounting portion is configured to be coaxially connected to the axle of the vehicle and the tire outer support body. The pressure-bearing portion protrudes from the wheel so that the pressure-bearing surface can contact the ground after the tire on the wheel is deflated. The longitudinal section of the tire outer support is trumpet-shaped; The support portion includes a first portion and a second portion, wherein the end of the first portion away from the second portion is connected to the end face of the mounting portion facing the pressure-bearing portion; One end of the second part is connected to the end face of the first part away from the mounting portion and extends radially along the outer tire support body; The cross-section of the pressure-bearing part is annular, and the end of the second part away from the first part is connected to the inner ring of the pressure-bearing part; The cross-section of the pressure-bearing part is a rounded rectangle. Along the axial direction of the outer tire support, the pressure-bearing part is symmetrically arranged with respect to the second part, or the pressure-bearing part is not symmetrically arranged with respect to the second part. The radial dimension of the pressure-bearing part on the outer tire support body is h, and the axial dimension of the pressure-bearing part on the outer tire support body is w, satisfying 0.3≤h / w≤0.

6.

2. The tire outer support body according to claim 1, characterized in that, The flexible layer includes a peripheral area and a side area. There are two side areas, which are respectively located at opposite ends of the peripheral area along the axial direction of the tire outer support. The peripheral area is located on the peripheral surface of the rigid layer. One side area extends to the end face of the rigid layer facing the mounting part, and the other side area extends to the end face of the rigid layer away from the mounting part.

3. The tire outer support body according to claim 1, characterized in that, The flexible layer has a radial dimension L on the outer support of the tire, which satisfies 1mm≤L≤5mm.

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