Applicable to support structure of superconducting magnet, superconducting magnet and maglev train

Abstract

The present invention provides a support structure suitable for superconducting magnets, a superconducting magnet and a maglev train, which can solve the strength problem and heat leakage problem of small-sized support structures. The support structure includes: a main structure, a first and a second fixed cover plate assembly, a first and a second connecting assembly, a first and a second supporting body, the main structure is a tubular structure made of composite materials, and is divided into a first contraction section, an equal straight section and a second contraction section with smooth transition in its axial direction, the first and the second contraction sections are both trumpet-shaped, and the equal straight section is a hollow cylindrical tube; the first and the second fixed cover plate assemblies are circumferentially fitted on the outside of the first and the second contraction sections; the first connecting assembly connects and fixes the first fixed cover plate assembly and the first contraction section to the inner groove of the superconducting magnet; the second connecting assembly connects and fixes the second fixed cover plate assembly and the second contraction section to the outer groove of the superconducting magnet; the first supporting body is sleeved in the first contraction section; the second supporting body is sleeved in the second contraction section.

Description

Technical Field

[0001] The invention belongs to the field of superconducting magnet structure of maglev train, and relates to a supporting structure suitable for superconducting magnet, a superconducting magnet and a maglev train. Background Art

[0002] The low-temperature superconducting magnet consists of an inner tank and an outer tank for accommodating coils. The inner tank is usually cooled by liquid helium to a low temperature environment of about 4.2K. In order to maintain the working environment of low-temperature superconductivity, the superconducting magnet is usually placed in a container containing liquid helium, that is, placed in the inner tank, and the inner tank is placed in a high vacuum, high heat shielded outer tank, and the outer tank is at room temperature 300K. It is necessary to minimize the heat transfer from the outer wall of the outer tank to the inner tank. In order to transmit the driving force generated by the superconducting magnet coil, the connecting support structure between the inner tank and the outer tank needs to have a low heat leakage to maintain the low temperature state of the inner tank and ensure that the structure does not lose superconductivity; at the same time, the outer tank is connected to the vehicle body to transmit the magnet driving force to the vehicle body and transmit a large load, so it needs to have sufficient strength. In order to ensure that the superconducting magnet can operate safely under various extreme conditions, the size of its support structure is often large, which will cause excessive heat leakage in the system, and vice versa, it will cause insufficient structural strength. Therefore, high strength and low heat leakage are a contradiction in structural design. Designing a high-strength and low-heat leakage support structure is about finding a balance between the two.

[0003] At present, patent application CN201936715U discloses a suspension rod structure with high-temperature end connecting threads and low-temperature connecting threads at both ends. The structure is simple and low-cost, but metal threads and spacer structures are required at both ends, and there is still a large space for reducing heat leakage. In addition, the solid structure has a relatively low radial bearing capacity. Patent application CN104779030A discloses a superconducting magnet suspension support structure, which includes an axial support rod and a radial support rod. The structural strength is high, but the structure is relatively complex, the required installation space is large, and the heat leakage also has a large space for reducing. It can be seen that the current support structure of the superconducting magnet cannot well balance high strength and low heat leakage. In addition, with the demand for small-size design space for low-temperature superconducting magnets, it is an urgent problem to provide a support structure suitable for a small installation space of a superconducting magnet and taking into account high strength and low heat leakage characteristics. Summary of the invention

[0004] The present invention provides a support structure suitable for a superconducting magnet, a superconducting magnet and a maglev train, which can solve the technical problem in the prior art that the support structure of the superconducting magnet cannot take into account both high strength and low heat leakage characteristics when installed in a small installation space.

[0005] According to one aspect, a support structure suitable for a superconducting magnet is provided, wherein the support structure comprises: a main structure, a first fixed cover plate assembly, a second fixed cover plate assembly, a first connecting assembly, a second connecting assembly, a first support body and a second support body, wherein the main structure is a cylindrical structure made of a composite material, wherein the cylindrical structure is divided into a first contraction section, an equal straight section and a second contraction section with a smooth transition in its axial direction, wherein the first contraction section and the second contraction section are both trumpet-shaped, and the first contraction section and the second contraction section also gradually contract toward the equal straight section, wherein the equal straight section is a hollow cylindrical tube; the first fixed cover plate assembly is circumferentially fitted on the outside of the first contraction section; the second fixed cover plate assembly is circumferentially fitted on the outside of the second contraction section; the first connecting assembly cooperates with the first fixed cover plate assembly to connect the first fixed cover plate assembly and the first contraction section to the inner groove of the superconducting magnet The first fixed cover plate assembly is connected and fixed, and the first contraction section is pressed against the inner groove of the superconducting magnet by the first connecting assembly; the second connecting assembly cooperates with the second fixed cover plate assembly to connect and fix the second fixed cover plate assembly, the second contraction section and the outer groove of the superconducting magnet, and the second fixed cover plate assembly presses the second contraction section against the outer groove of the superconducting magnet by the second connecting assembly; the first support body is designed to conform to the first contraction section, and the first support body is sleeved in the first contraction section, and is pressed against the inner groove of the superconducting magnet under the action of the first connecting assembly and the first fixed cover plate assembly, and the first support body is used to limit the sliding of the main structure; the second support body is designed to conform to the second contraction section, and the second support body is sleeved in the second contraction section, and is pressed against the outer groove of the superconducting magnet under the action of the second connecting assembly and the second fixed cover plate assembly, and the second support body is used to limit the sliding of the main structure.

[0006] Furthermore, the composite material is a fiber-reinforced resin composite material, wherein the fiber material in the hollow cylindrical tube is layered along the circumference of the cylindrical tube; and the fibers in the trumpet-shaped first contraction section and the second contraction section are layered along a structural shape change.

[0007] Furthermore, the first support body is bonded to the inner wall of the first contraction section, the first support body has a rough surface, and the first support body limits the sliding of the main structure through friction or adhesion.

[0008] Furthermore, the second support body is bonded to the inner wall of the second contraction section, the second support body has a rough surface, and the second support body limits the sliding of the main structure through friction or adhesion.

[0009] Furthermore, the first fixed cover plate assembly includes a first fixed cover plate and a second fixed cover plate, and the first fixed cover plate and the second fixed cover plate are both arranged on the outer side of the first contraction section.

[0010] Furthermore, the second fixed cover plate assembly includes a third fixed cover plate and a fourth fixed cover plate, and the third fixed cover plate and the fourth fixed cover plate are both fitted and arranged on the outer side of the second contraction section.

[0011] Further, the plurality of first connection components include a plurality of bolts; the plurality of first connection components include a plurality of bolts.

[0012] According to another aspect, a superconducting magnet is provided, comprising an inner groove and an outer groove, and the above-mentioned supporting structure disposed between the inner groove and the outer groove.

[0013] According to yet another aspect, a maglev train is provided, the maglev train comprising the above-mentioned superconducting magnet.

[0014] By applying the technical solution of the present invention, a support structure for a superconducting magnet is provided. The main material is designed to be prepared by composite materials, and the composition of the main structure is designed so that the main structure has a smaller cross-sectional area. The two are matched to make the main structure have lower heat leakage. The first contraction section and the second contraction section of the main structure are designed to be trumpet-shaped and the straight section is a hollow cylindrical tube, wherein the contraction sections at both ends have better axial support strength, and the design of the straight section in the middle makes the structural deformation relatively low when subjected to tensile and compressive loads, and can maintain sufficient rigidity. At the same time, the cover plate assembly and the support assembly are used at both ends of the main structure. The body is fixed, and the main structure serves as the main load-bearing part and cooperates with the cover plate assembly and the support body, which can effectively avoid the axial deformation of the composite material, and maintain good stability and load-bearing capacity under the condition of bearing a large axial force; and the support body inside has a large contact area with the main structure, which can be glued, and has a connecting assembly that penetrates and connects, which can achieve a higher connection strength and withstand greater axial and radial loads; in addition, for narrow spaces, the support structure of the present invention is compact, and even in narrow spaces, through the cooperation of the main structure with the cover plate assembly, the support body and the connecting assembly, it can also take into account high strength and low heat leakage characteristics. In summary, the present invention designs a main structure with a special structure, and cooperates with the cover plate assembly, the support body and the connecting assembly, so that the support structure can make full use of the in-plane strength and stiffness of the composite material, and achieves high shear, tensile strength and low heat leakage of the support structure in a narrow space. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The included drawings are used to provide a further understanding of the embodiments of the present invention, which constitute a part of the specification, are used to illustrate the embodiments of the present invention, and together with the text description, explain the principles of the present invention. Obviously, the drawings in the following description are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 A cross-sectional view of a support structure of a superconducting magnet provided according to a specific embodiment of the present invention is shown;

[0017] Figure 2 An end view of a support structure of a superconducting magnet provided according to a specific embodiment of the present invention is shown;

[0018] Figure 3 An assembly diagram of a support structure of a superconducting magnet provided according to a specific embodiment of the present invention is shown;

[0019] Figure 4 It shows a schematic structural diagram of a main structure provided according to a specific embodiment of the present invention;

[0020] Figure 5 It shows a schematic structural diagram of a first fixed cover plate provided according to a specific embodiment of the present invention;

[0021] Figure 6 A schematic structural diagram of a first support body provided according to a specific embodiment of the present invention is shown.

[0022] 10. Main structure; 11. First contraction section; 12. Equal straight section; 13. Second contraction section; 20. First fixed cover plate assembly; 21. First fixed cover plate; 22. Second fixed cover plate; 30. Second fixed cover plate assembly; 31. Third fixed cover plate; 32. Fourth fixed cover plate; 40. First support body; 50. Second support body. DETAILED DESCRIPTION

[0023] It should be noted that, in the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] 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, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0025] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0026] like Figures 1 to 6 As shown, in one embodiment of the present invention, a support structure suitable for a superconducting magnet is provided, wherein the support structure comprises: a main structure 10, a first fixed cover plate assembly 20, a second fixed cover plate assembly 30, a first connecting assembly, a second connecting assembly, a first support body 40 and a second support body 50; the main structure 10 is a cylindrical structure made of composite materials, and the cylindrical structure is divided into a first contraction section 11, an equal straight section 12 and a second contraction section 13 with a smooth transition in its axial direction, the first contraction section 11 and the second contraction section 13 are both trumpet-shaped, and the first contraction section 11 and the second contraction section 13 are also gradually contracted toward the equal straight section 12, and the equal straight section 12 is a hollow cylindrical tube; the first fixed cover plate assembly 20 is circumferentially fitted on the outside of the first contraction section 11; the second fixed cover plate assembly 30 is circumferentially fitted on the outside of the second contraction section 13; the first connecting assembly cooperates with the first fixed cover plate assembly 20, and is used to connect the first fixed cover plate assembly 20, the first contraction section 11 and The inner groove of the superconducting magnet is connected and fixed, and the first fixed cover plate assembly 20 presses the first contraction section 11 onto the inner groove of the superconducting magnet through the first connecting assembly; the second connecting assembly cooperates with the second fixed cover plate assembly 30 to connect and fix the second fixed cover plate assembly 30 and the second contraction section 13 to the outer groove of the superconducting magnet, and the second fixed cover plate assembly 30 presses the second contraction section 13 onto the outer groove of the superconducting magnet through the second connecting assembly; the first support body 40 is designed to conform to the first contraction section 11, and the first support body 40 is sleeved in the first contraction section 11, and is pressed on the inner groove of the superconducting magnet under the action of the first connecting assembly and the first fixed cover plate assembly 20, and the first support body 40 is used to limit the sliding of the main structure 10; the second support body 50 is designed to conform to the second contraction section 13, and the second support body 50 is sleeved in the second contraction section 13, and is pressed on the outer groove of the superconducting magnet under the action of the second connecting assembly and the second fixed cover plate assembly 30, and the second support body 50 is used to limit the sliding of the main structure 10.

[0027] That is, if Figure 4 As shown, the main structure 10 of this embodiment is a cylindrical structure with thick ends and thin middle, and the two ends are in a bell-mouth shape. In addition, since the first support body 40 and the second support body 50 are respectively designed to follow the first contraction section 11 and the second contraction section 13, as shown in FIG. Figure 6 As shown, the first support body 40 is in a bell-mouth shape, and similarly, the second support body 50 is also in a bell-mouth shape.

[0028] In this embodiment, the main structure 10 is the main force transmission component, bearing axial tensile and compressive loads and radial shear loads, one end of which is connected to the inner groove of the superconducting magnet, and the other end is connected to the outer groove of the superconducting magnet. The first fixed cover plate assembly 20, the second fixed cover plate assembly 30, the first support body 40 and the second support body 50 constitute the connecting parts of the support structure, and cooperate with the first connecting assembly and the second connecting assembly. The first fixed cover plate assembly 20 and the second fixed cover plate assembly 30 respectively press the main structure 10 on the inner groove and the outer groove through the first connecting assembly and the second connecting assembly to prevent the main structure 10 from sliding; the fixed structure composed of the support body and the fixed cover plate assembly limits the structural deformation of the main structure 10 in the radial direction, and gives full play to the axial and radial bearing capacity of the main structure 10.

[0029] By applying this configuration, a support structure for a superconducting magnet is provided. On the one hand, the main material is designed to be made of composite materials, and the composition of the main structure 10 is designed so that the main structure 10 has a smaller cross-sectional area. The combination of the two makes the main structure 10 have lower heat leakage. On the other hand, the first contraction section 11 and the second contraction section 13 of the main structure 10 are designed to be trumpet-shaped, and the straight section 12 is designed to be a hollow cylindrical tube, wherein the contraction sections at both ends have better axial support strength, and the middle straight section 12 is designed so that when subjected to tensile and compressive loads, the structural deformation is relatively low and sufficient rigidity can be maintained. At the same time, the main structure 10 The two ends are fixed with cover plate assemblies and support bodies. The main structure 10 serves as the main load-bearing part and cooperates with the cover plate assembly and the support body, which can effectively avoid axial deformation of the composite material and maintain good stability and load-bearing capacity when bearing large axial forces. In addition, the internal support body has a large contact area with the main structure 10 and can be glued, and there is a connecting assembly running through the connection, which can achieve a higher connection strength and withstand greater axial and radial loads. In addition, for narrow spaces, the support structure of the present invention is compact. Even in narrow spaces, through the cooperation of the main structure 10 with the cover plate assembly, the support body and the connecting assembly, both high strength and low heat leakage characteristics can be taken into account.

[0030] In the above embodiment, in order to further ensure the strength and bearing capacity of the main structure 10, the first contraction section 11, the second contraction section 13 and the straight section 12 are all designed with equal thickness.

[0031] In the above embodiment, in order to ensure the structural strength and rigidity of the main structure 10, as well as low heat leakage, the composite material is a fiber-reinforced resin composite material, wherein the fiber material in the hollow cylindrical tube is layered along the circumference of the cylindrical tube; and the fibers in the trumpet-shaped first contraction section 11 and the second contraction section 13 are layered along the structural shape.

[0032] The fiber laying method in this embodiment ensures the strength and rigidity of the main structure 10, and the fiber reinforced resin composite material is preferably a composite material with lower heat leakage.

[0033] In the above embodiment, in order to further improve the connection strength, the first support body 40 is bonded to the inner wall of the first contraction section 11, and the first support body 40 has a rough surface. The first support body 40 limits the sliding of the main structure 10 through friction or adhesion.

[0034] That is, the first support body 40 and the first contraction section 11 are connected by adhesive, which further improves the connection strength between the two and limits the sliding of the main structure 10. At the same time, by designing the first support body 40 to have a rough surface, the sliding of the main structure 10 is further limited.

[0035] In the above embodiment, in order to further improve the connection strength, the second support body 50 is bonded to the inner wall of the second contraction section 13, and the second support body 50 has a rough surface. The second support body 50 limits the sliding of the main structure 10 through friction or adhesion.

[0036] That is, the second support body 50 and the second contraction section 13 are connected by adhesive, which further improves the connection strength between the two and limits the sliding of the main structure 10. At the same time, by designing the second support body 50 to have a rough surface, the sliding of the main structure 10 is further limited.

[0037] In the above embodiment, for the convenience of operation, the first fixed cover plate assembly 20 includes a first fixed cover plate 21 and a second fixed cover plate 22 , and the first fixed cover plate 21 and the second fixed cover plate 22 are both arranged on the outer side of the first contraction section 11 .

[0038] As a specific embodiment of the present invention, Figure 5As shown, the first fixed cover plate 21 is designed as a semicircular structure, and the second fixed cover plate 22 is also designed as a semicircular structure, that is, the first fixed cover plate assembly 20 is split into two semicircular structures, both of which have a rough surface. After the main structure 10 is installed, the first fixed cover plate 21 and the second fixed cover plate 22 are pressed together, and the friction between the fixed cover plate and the main structure 10 and the first connecting assembly are used to prevent the main structure 10 from sliding out.

[0039] In the above embodiment, for the convenience of operation, the second fixed cover plate assembly 30 includes a third fixed cover plate 31 and a fourth fixed cover plate 32 , and the third fixed cover plate 31 and the fourth fixed cover plate 32 are both arranged on the outer side of the second contraction section 13 .

[0040] As a specific embodiment of the present invention, the third fixed cover plate 31 and the fourth fixed cover plate 32 are designed as follows: Figure 5 The semicircular structures shown both have rough surfaces. After the main structure 10 is installed, the third fixed cover plate 31 and the fourth fixed cover plate 32 are used to press it, and the friction between the fixed cover plate and the main structure 10 and the second connecting component prevent the main structure 10 from sliding out.

[0041] In the above embodiment, in order to achieve the connection between the fixed cover plate assembly, the main structure 10 and the inner and outer grooves, the multiple first connection assemblies include multiple bolts; the multiple first connection assemblies include multiple bolts.

[0042] As a specific embodiment of the present invention, the edges of the first contraction section 11 and the second contraction section 13 are both perforated for installation and fixation with multiple bolts. At the same time, the corresponding first cover plate assembly and the second cover plate assembly are also perforated accordingly.

[0043] According to another embodiment, a superconducting magnet is provided. The superconducting magnet includes an inner groove and an outer groove, and the above-mentioned supporting structure disposed between the inner groove and the outer groove.

[0044] Among them, the above-mentioned support structure is arranged between the inner slot and the outer slot of the superconducting magnet, and cooperates with other supporting connectors to transmit the driving force and braking force generated by the inner slot coil to the outer slot, thereby realizing acceleration, deceleration and braking of the whole vehicle.

[0045] According to another embodiment of the present invention, there is also a maglev train, which includes the above-mentioned superconducting magnet.

[0046] In summary, in order to solve the strength and heat leakage problems of small-sized support structures, the embodiment of the present invention provides a support structure suitable for superconducting magnets. Through the shape of the main structure 10 and the design of fixed connectors (fixed cover plate assembly, support body and connection assembly), the in-plane strength and stiffness of the composite material are fully utilized to achieve high shear and tensile strength and low heat leakage of the structure. The support structure is compact. Even in a small space, the main structure 10 cooperates with the cover plate assembly, the support body and the connection assembly to achieve both high strength and low heat leakage. In addition, the structure overcomes the strength problem of the composite material between layers, designs the composite material main structure 10 into a curved hollow structure, and uses fixed connectors for connection, which further improves the structural connection strength and stiffness. The structure uses low heat leakage composite materials with a small cross-sectional area, which can achieve a lower heat leakage.

[0047] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0048] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0049] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A support structure suitable for a superconducting magnet, characterized in that: The support structure comprises: The main body structure (10) is a cylindrical structure made of composite material. The cylindrical structure is divided into a first contraction section (11), an equal straight section (12) and a second contraction section (13) in sequence along its axial direction. The first contraction section (11) and the second contraction section (13) are both trumpet-shaped. The first contraction section (11) and the second contraction section (13) are also gradually contracted toward the equal straight section (12). The equal straight section (12) is a hollow cylindrical tube. The first contraction section (11), the second contraction section (13) and the equal straight section (12) are all designed with equal thickness. A first fixed cover plate assembly (20), the first fixed cover plate assembly (20) being circumferentially arranged in close contact with the outer side of the first contraction section (11); A second fixed cover plate assembly (30), the second fixed cover plate assembly (30) being circumferentially arranged on the outer side of the second contraction section (13); a first connection component, the first connection component cooperates with the first fixed cover plate component (20) and is used to connect and fix the first fixed cover plate component (20), the first contraction section (11) and the inner groove of the superconducting magnet, the first fixed cover plate component (20) pressing the first contraction section (11) onto the inner groove of the superconducting magnet through the first connection component; a second connection assembly, the second connection assembly cooperates with the second fixed cover assembly (30) and is used to connect and fix the second fixed cover assembly (30), the second contraction section (13) and the outer groove of the superconducting magnet, the second fixed cover assembly (30) pressing the second contraction section (13) onto the outer groove of the superconducting magnet through the second connection assembly; a first support body (40), the first support body (40) being designed to conform to the first contraction section (11), the first support body (40) being sleeved in the first contraction section (11), and being pressed against the inner groove of the superconducting magnet under the action of the first connection assembly and the first fixed cover assembly (20), the first support body (40) being used to limit the sliding of the main structure (10); The second support body (50) is designed to conform to the second contraction section (13). The second support body (50) is sleeved in the second contraction section (13) and is pressed against the outer groove of the superconducting magnet under the action of the second connection assembly and the second fixed cover assembly (30). The second support body (50) is used to limit the sliding of the main structure (10).

2. A support structure suitable for a superconducting magnet according to claim 1, characterized in that: The composite material is a fiber-reinforced resin composite material, wherein the fiber material in the hollow cylindrical tube is layered along the circumference of the cylindrical tube; and the fibers in the trumpet-shaped first contraction section (11) and the second contraction section (13) are layered along the structural shape.

3. A support structure suitable for a superconducting magnet according to claim 1, characterized in that: The first support body (40) is bonded to the inner wall of the first contraction section (11), the first support body (40) has a rough surface, and the first support body (40) limits the sliding of the main structure (10) through friction or adhesion.

4. A support structure suitable for a superconducting magnet according to claim 3, characterized in that: The second support body (50) is bonded to the inner wall of the second contraction section (13), the second support body (50) has a rough surface, and the second support body (50) limits the sliding of the main structure (10) through friction or bonding force.

5. A support structure suitable for a superconducting magnet according to claim 3 or 4, characterized in that: The first fixed cover plate assembly (20) comprises a first fixed cover plate (21) and a second fixed cover plate (22), and the first fixed cover plate (21) and the second fixed cover plate (22) are both arranged in close contact with the outer side of the first contraction section (11).

6. A support structure suitable for a superconducting magnet according to claim 5, characterized in that: The second fixed cover plate assembly (30) comprises a third fixed cover plate (31) and a fourth fixed cover plate (32), and the third fixed cover plate (31) and the fourth fixed cover plate (32) are both arranged in close contact with the outer side of the second contraction section (13).

7. The support structure suitable for a superconducting magnet according to claim 1, characterized in that: The plurality of first connection assemblies include a plurality of bolts.

8. A superconducting magnet, characterized in that: The superconducting magnet comprises an inner groove and an outer groove, and the support structure according to any one of claims 1 to 7 arranged between the inner groove and the outer groove.

9. A magnetic levitation train, characterized in that: The maglev train comprises the superconducting magnet according to claim 8.

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