Split type steel ring for vacuum tire

Abstract

The utility model provides a split type steel ring for a vacuum tire, which comprises a rim and a movable wheel edge, a first end of the rim is provided with a fixed wheel edge, and the movable wheel edge is detachably connected with a second end of the rim to form a complete steel ring structure. The split type steel rim structure is adopted, the diameter of the tire mounting surface of the rim is effectively reduced, and when a tire is mounted, due to the fact that the diameter of the tire mounting surface of the rim is reduced, pressure and tension applied to a tire opening are correspondingly reduced, the tire can be mounted more easily, and the problem that the tire opening is damaged can be avoided. Meanwhile, due to the fact that the movable wheel edge is detachably connected with the rim, when the tire is installed, the tire can be installed on the rim firstly, and then the movable wheel edge is installed in place. Due to the arrangement, the diameter design of the movable wheel edge is not limited any more, and therefore the diameter of the movable wheel edge can be designed to be as large as possible so as to further reinforce protection on the tire opening.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, in particular to a split steel rim for a vacuum tire. Background Art

[0002] Under the background of the rapid development of the logistics industry, the transportation demand for logistics vehicles is increasing day by day, which puts forward higher requirements for the safety of vehicles. Among them, as a key component for supporting and fixing tires, the safety performance of the steel rim of automobile tires is particularly important.

[0003] At present, automobile tires are divided into two categories: tubed tires and tubeless tires. Since the tubed tire is provided with an independent inner tube inside, when encountering a sharp object such as a nail puncture, due to the existence of the inner tube, the air leakage speed is relatively fast, increasing safety risks such as vehicle out of control. In contrast, when the tubeless tire encounters a puncture, due to the action of the air pressure and airtight layer inside the tire, the air leakage speed is relatively slow, which gives the driver a certain amount of emergency handling time and improves driving safety.

[0004] The applicant of the present invention has found that the prior art has at least the following technical problems:

[0005] The steel rims of traditional vacuum tires often adopt an integral design. Due to the too large diameter of the steel rim, the diameter of the tire mounting surface of the rim is too large. When installing the tire, the too large diameter of the mounting surface will cause the bead to be subjected to too much pressure or tension, resulting in bead damage. At the same time, due to the small bead, when the tire bears a large pressure or impact, the bead is likely to disengage from the rim, with poor stability, which may damage the tire and may also cause the vehicle to get out of control, posing a safety hazard.

[0006] For example, a tubeless wheel structure disclosed in the patent application No. CN201620109849.7.

[0007] In view of this, the present utility model is specifically proposed. Content of the Utility Model

[0008] The purpose of the present utility model is to provide a split steel rim for a vacuum tire to solve the technical problem in the prior art that the steel rims of vacuum tires often adopt an integral design, and the diameter of the steel rim is too large, resulting in too large a diameter of the tire mounting surface of the bead, and too much pressure or tension will be applied to the bead when installing the tire, causing bead damage. The preferred technical solutions provided by the present utility model can produce many technical effects, which will be elaborated below.

[0009] To achieve the above object, the present utility model provides the following technical solutions:

[0010] A split steel rim for a vacuum tire provided by the present utility model includes a rim and a movable wheel rim. The first end of the rim has a fixed wheel rim, and the movable wheel rim is detachably connected to the second end of the rim to form a complete steel rim structure.

[0011] Preferably, a wheel rim groove is formed at the second end of the rim, and the movable wheel rim is snap-fitted with the wheel rim groove.

[0012] Preferably, the opening direction of the wheel rim groove is inclined towards the fixed wheel rim to form a first barb structure, and the bottom of the movable wheel rim has a second barb structure adapted to the first barb structure.

[0013] Preferably, the rim further has a first bead seat, a rim groove, and a second bead seat. The fixed wheel rim, the first bead seat, the rim groove, the second bead seat, and the wheel rim groove are arranged in sequence along the axial direction of the rim.

[0014] Preferably, when the force on the wheel rim groove and the fixed wheel rim is greater than that on the rim groove, the thickness of the rim groove is less than that of the wheel rim groove.

[0015] Preferably, when the force on the wheel rim groove is the greatest, the thickness of the wheel rim groove is greater than that of the second bead seat.

[0016] Preferably, the included angle at the connection between the first bead seat and the fixed wheel rim is 87° - 165°.

[0017] Preferably, the vertical distance from the fixed wheel rim to the first bead seat is 13 mm - 85 mm.

[0018] Preferably, an injection molding layer is provided on the outer wall surface of the rim.

[0019] Preferably, the rim is formed by rolling a steel pipe.

[0020] The preferred technical solutions of the present utility model can at least further produce the following technical effects:

[0021] The utility model effectively avoids the technical problem existing in the prior art that the steel rim of a tubeless tire often adopts an integral design, and the diameter of the steel rim is too large, resulting in too large a diameter of the tire mounting surface of the rim, and excessive pressure or tension is applied to the bead when installing the tire, causing bead damage. A split steel rim for a tubeless tire provided by the utility model includes a rim and a movable wheel rim. The first end of the rim has a fixed wheel rim, and the movable wheel rim is detachably connected to the second end of the rim to form a complete steel rim structure. The split steel rim structure adopted by the utility model effectively reduces the diameter of the tire mounting surface of the rim. When installing the tire, due to the reduction of the diameter of the tire mounting surface of the rim, the pressure and tension applied to the bead are also correspondingly reduced, making the tire installation easier and avoiding the problem of bead damage. At the same time, due to the detachable connection between the movable wheel rim and the rim, when installing the tire, the tire can be first installed on the rim, and then the movable wheel rim can be installed in place. Such a setting makes the diameter design of the movable wheel rim no longer restricted. Therefore, the diameter of the movable wheel rim in the utility model can be designed as large as possible to further strengthen the protection of the bead and prevent the tire from being damaged due to external impact during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0023] Figure 1 FIG. is a schematic structural diagram of a split steel rim for a tubeless tire provided by the present utility model in an assembled state;

[0024] Figure 2 FIG. is a schematic structural diagram of the rim of a split steel rim for a tubeless tire provided by the present utility model;

[0025] Figure 3 FIG. is a schematic structural diagram of the movable wheel rim of a split steel rim for a tubeless tire provided by the present utility model.

[0026] In the figure:

[0027] 1, rim; 11, fixed wheel rim; 12, first bead seat; 13, rim groove; 14, second bead seat; 15, wheel rim groove;

[0028] 2, movable wheel rim; 21, second barb structure. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] To make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions of the present utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other implementation manners obtained by those of ordinary skill in the art without creative efforts belong to the scope protected by the present utility model.

[0030] As Figures 1 - 3 shown, a split steel rim for a vacuum tire provided by the present utility model includes a rim 1 and a movable wheel rim 2. The first end of the rim 1 has a fixed wheel rim 11, and the movable wheel rim 2 is detachably connected to the second end of the rim 1 to form a complete steel rim structure.

[0031] The present utility model adopts a split steel rim structure, which effectively reduces the diameter of the tire mounting surface of the rim 1. When installing a tire, due to the reduction of the diameter of the tire mounting surface of the rim 1, the pressure and tension applied to the bead are also correspondingly reduced, making the tire installation easier and avoiding the problem of bead damage. At the same time, due to the detachable connection between the movable wheel rim 2 and the rim 1, when installing a tire, the tire can be first installed in place from the second end of the rim 1, and then the movable wheel rim 2 can be installed in place. With this arrangement, the diameter design of the movable wheel rim 2 is no longer restricted. Therefore, the diameter of the movable wheel rim 2 in the present utility model can be designed as large as possible to further strengthen the protection of the bead and prevent the tire from being damaged due to external impact during use.

[0032] As an optional implementation manner, a wheel rim groove 15 is provided at the second end of the rim 1, and the movable wheel rim 2 is snap-fitted with the wheel rim groove 15.

[0033] The movable wheel rim 2 is tightly connected to the wheel rim groove 15 by snap-fitting, ensuring connection stability and reliability while facilitating the assembly operation.

[0034] As an optional implementation manner, the opening direction of the wheel rim groove 15 is inclined towards the fixed wheel rim 11 to form a first barb structure, and the bottom of the movable wheel rim 2 has a second barb structure 21 adapted to the first barb structure.

[0035] Further, the cross-sections of the first barb structure and the second barb structure 21 are V-shaped.

[0036] When the movable wheel rim 2 is pushed into the wheel rim groove 15, the second barb structure 21 can be firmly snap-fitted into the first barb structure, improving the connection stability and reliability between the movable wheel rim 2 and the rim 1.

[0037] The end face of the movable wheel rim 2 close to the fixed wheel rim 11 is a flat surface and does not contact the second bead seat 14 of the rim 1, so that the tire bead fully and tightly cooperates with the second bead seat 14, improving the airtight safety of the tubeless tire.

[0038] As an alternative embodiment, the rim 1 further has a first bead seat 12, a rim groove 13 and a second bead seat 14. The fixed wheel rim 11, the first bead seat 12, the rim groove 13, the second bead seat 14 and the wheel rim groove 15 are arranged in sequence along the axial direction of the rim 1.

[0039] As an alternative embodiment, when the force on the wheel rim groove 15 and the fixed wheel rim 11 is greater than that on the rim groove 13, the thickness of the rim groove 13 is less than that of the wheel rim groove 15.

[0040] When the force on the rim groove 13 is small, the rim groove 13 is set to be thinner by spinning, so as to reduce the material consumption, lower the cost and reduce the overall weight.

[0041] As an alternative embodiment, when the force on the wheel rim groove 15 is the largest, the thickness of the wheel rim groove 15 is greater than that of the second bead seat 14.

[0042] When the force on the wheel rim groove 15 is the largest, the wheel rim groove 15 is thickened to enhance the strength and durability of the wheel rim groove 15 area.

[0043] As an alternative embodiment, the included angle at the connection between the first bead seat 12 and the fixed wheel rim 11 is 87° - 165°, improving the connection stability between the tire and the rim 1.

[0044] As an alternative embodiment, the vertical distance of the fixed wheel rim 11 relative to the first bead seat 12 is 13 mm - 85 mm, strengthening the protection effect on the bead.

[0045] As an alternative embodiment, an injection molding layer is provided on the outer wall surface of the rim 1.

[0046] Furthermore, the injection molding layer is made of high-temperature resistant plastic.

[0047] Since there is a problem of excessive temperature in the brake drum after use. If the high temperature of the brake drum is directly transmitted to the steel rim structure, it will cause the steel rim to be too hot, resulting in damage or even bursting of the tire. The utility model provides a protective layer for the rim 1 by providing a high-temperature resistant injection molding layer on the outer wall surface of the rim 1, which can isolate the high-temperature transmission. At the same time, it can also isolate the corrosion of external environmental factors, effectively protect the tire and extend the service life of the tire.

[0048] As an alternative embodiment, the rim 1 is formed by rolling a steel pipe.

[0049] The rim 1 of the present utility model uses steel plates as raw materials, forms steel pipes through the process of coiling and butt welding, and then uses a mold for rolling and forming.

[0050] Compared with the profiled steel plates rolled from steel billets, the rim 1 made of steel plates has better airtightness and lower costs.

[0051] The present utility model provides a first preparation process for the rim 1:

[0052] When the force on the rim groove 15 and the fixed rim 11 is greater than that on the rim groove 13, the spinning and thinning technology of the spinning steel plate is adopted in the area of the steel pipe corresponding to the rim groove 13 to reduce the material consumption, lower the cost, and reduce the overall weight. Then, through the mold rolling and forming process, the fixed rim 11, the first bead seat 12, the rim groove 13, the second bead seat 14, and the rim groove 15 are formed to form the rim 1.

[0053] The present utility model provides a second preparation process for the rim 1:

[0054] When the force on the rim groove 15 is the greatest, through local heating and die extrusion, thickening is achieved in the area of the steel pipe corresponding to the rim groove 15 to enhance the strength and durability of the rim groove 15 area. Then, through the mold rolling and forming process, the fixed rim 11, the first bead seat 12, the rim groove 13, the second bead seat 14, and the rim groove 15 are formed to form the rim 1.

[0055] The present utility model provides a third preparation process for the rim 1:

[0056] When the overall force on the rim is uniform, the steel pipe is set with equal thickness, and through the mold rolling and forming process, the fixed rim 11, the first bead seat 12, the rim groove 13, the second bead seat 14, and the rim groove 15 are formed to form the rim 1.

[0057] It can be understood that the same or similar parts in the above embodiments can be referred to each other, and the content not detailed in some embodiments can be referred to the same or similar content in other embodiments.

[0058] In the description of the present utility model, it should be noted that unless otherwise specified, the meaning of "a plurality" is two or more; the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0059] In the description of the present utility model, it should also be noted that, unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0060] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "an example" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

[0061] As mentioned above, the above are only the specific implementation manners of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or substitutions, which should all be covered by the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims

1. A split steel rim for a vacuum tire, characterized in that, It includes a rim and a movable wheel rim. The first end of the rim has a fixed wheel rim, and the movable wheel rim is detachably connected to the second end of the rim to form a complete steel ring structure.

2. The split steel rim for a vacuum tire according to claim 1, characterized in that A wheel rim groove is provided at the second end of the rim, and the movable wheel rim is snap-fitted with the wheel rim groove.

3. The split steel rim for a vacuum tire according to claim 2, characterized in that, The opening direction of the wheel rim groove is inclined towards the fixed wheel rim to form a first barb structure, and the bottom of the movable wheel rim has a second barb structure adapted to the first barb structure.

4. The split steel rim for a vacuum tire according to claim 2, wherein, The rim also has a first bead seat, a rim groove, and a second bead seat. The fixed wheel rim, the first bead seat, the rim groove, the second bead seat, and the wheel rim groove are arranged in sequence along the axial direction of the rim.

5. The split steel rim for a vacuum tire according to claim 4, wherein, When the force on the wheel rim groove and the fixed wheel rim is greater than that on the rim groove, the thickness of the rim groove is less than the thickness of the wheel rim groove.

6. The split steel rim for a vacuum tire according to claim 4, characterized in that, When the force on the wheel rim groove is the greatest, the thickness of the wheel rim groove is greater than the thickness of the second bead seat.

7. The split steel rim for a vacuum tire according to claim 4, characterized in that, The included angle at the connection between the first bead seat and the fixed wheel rim is 87° to 165°.

8. A split steel rim for a vacuum tire according to claim 5, characterized in that, The vertical distance of the fixed wheel rim relative to the first bead seat is 13 mm - 85 mm.

9. A split steel rim for a vacuum tire according to claim 1, characterized in that, An injection molding layer is provided on the outer wall surface of the rim.

10. The split steel rim for a vacuum tire according to claim 1, wherein, The rim is formed by rolling a steel pipe.

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