Transport carriage for spent fuel transport containers

Abstract

This invention provides a transport bracket for spent fuel transport containers, comprising: a bottom frame for fixing to a transport vehicle and supporting the overall structure of the transport bracket; at least two tilting axial supports disposed at one end of the bottom frame; at least two uprights disposed at the other end of the bottom frame; an arc-shaped support plate disposed at the other end of the bottom frame, located between the two uprights; lifting lugs connected to the tilting axial supports and the upper part of the uprights, used in conjunction with a horizontal lifting device for horizontal lifting of the transport bracket together with the spent fuel transport container; and a protective cover for protecting the outer surface of the spent fuel transport container. This invention features a compact structure and small size, meeting the requirements of various types of transportation, possessing strong load-bearing capacity, and capable of withstanding any acceleration of the container cargo under rail, road, and water transport conditions.

Description

Technical Field

[0001] This invention relates to the field of spent fuel transportation technology, and more specifically to a transport bracket for spent fuel transport containers. Background Technology

[0002] Spent fuel transportation is a type of dangerous goods transport strictly regulated by relevant national authorities. During transportation, spent fuel must be loaded into specialized transport containers. The transport unit, typically consisting of the loaded spent fuel container and transport pallets, is called a spent fuel package. Due to the high radioactivity and social sensitivity of spent fuel, its transportation requires extremely high safety standards. To ensure the integrity of the transported spent fuel assemblies, spent fuel packages must be able to withstand any acceleration, vibration, or resonance that might occur under conventional transport conditions. Therefore, the International Atomic Energy Agency (IAEA) issued SSG-25 Advisory Material for the IAEA Transport Regulations (2012 Edition), which sets limits on the horizontal and vertical acceleration of packages during transportation. Specifically, except for air transport, the maximum vertical acceleration is 3g, the horizontal acceleration along the container axis is 5g, and the horizontal acceleration perpendicular to the container axis is 2g.

[0003] Furthermore, the "Technical Requirements for Multimodal Transport Interfaces of Spent Fuel Packages (Provisional)" issued by the state also specifies the structural form of the transport bracket. Both ends of the width direction of the spent fuel package transport bracket have connection holes, through which bolts of specified specifications are passed to connect and fix the spent fuel package transport bracket to the transport vehicle. At the same time, basic parameters for railway transport vehicles are given, and reference values ​​for the external dimensions of spent fuel packages are provided, with very limited dimensions in both the height and width directions.

[0004] Currently, the rated lifting capacity of spent fuel transport container cranes at domestic power plants is generally no more than 140t, and the maximum self-weight of the spent fuel transport container (including components) is approximately 125t. Therefore, to meet the crane's load-bearing capacity, the self-weight of the support frame generally cannot exceed 15t.

[0005] The spent fuel transport container transport platform has three main functions: First, it serves as a tilting support platform for spent fuel transport containers, supporting the lower tilting shaft or tilting U-shaped groove during the tilting process, and cooperating with vertical lifting equipment to complete the tilting of the container from a horizontal to a vertical position. Second, it serves as a horizontal lifting support platform for containers, cooperating with horizontal lifting equipment for horizontal lifting. Third, it serves as a container transport platform, securing the containers during transport, supporting and fixing them to transport vehicles or other means of transportation.

[0006] Spent fuel transport containers are cylindrical structures, typically with two trunnions or U-shaped grooves symmetrically positioned near the top and bottom. Some domestic power plants use transport brackets for spent fuel containers (such as NAC-STC) that employ tethered straps for vertical restraint, which is difficult to control in terms of manufacturing precision and is very inconvenient to install. Axial restraint uses rear-mounted arc-shaped baffles, which are cumbersome to install and prone to collisions and wear during transport. Furthermore, this bracket structure is relatively weak, with limited load-bearing capacity, primarily used for intra-plant transport and unsuitable for the high-acceleration requirements of external transport.

[0007] The design of transport pallets for spent fuel containers used for outbound transportation needs to address the following issues:

[0008] First, it is necessary to fully consider the optimal balance between the size, weight, and load-bearing capacity of the bracket. The design of the bracket must maximize the load-bearing capacity to meet the acceleration requirements of transportation, minimize its own weight for easy lifting, and minimize the external dimensions while ensuring sufficient container loading space (i.e., the internal space must be large enough) for convenient rail and road transportation. These conflicting relationships need to be optimized as much as possible during the design process.

[0009] Second, the ease of loading and unloading transport containers must be met. Because the surface of spent fuel transport containers has a certain degree of radioactivity and a high temperature, the time operators spend near them should be minimized. The structure of the support frame needs to facilitate the lifting, turning, and securing of the containers to prevent operators from being burned by the containers.

[0010] Third, take full account of the transportation process to reduce wear and impact on the container and prevent container damage.

[0011] In view of this, the inventors of this application have designed a transport bracket for spent fuel transport containers in order to overcome the above-mentioned technical problems. Summary of the Invention

[0012] The technical problem to be solved by the present invention is to overcome the shortcomings of the existing technology of using tethered straps to constrain the vertical of spent fuel transport containers, which makes it difficult to control the processing accuracy and is very inconvenient to install; the axial constraint uses a rear-mounted arc baffle, which is cumbersome to install and prone to collision and wear of the container during transportation; its structure is relatively weak and its load-bearing capacity is generally weak. It is mainly used for internal transfer in nuclear power plants and is difficult to meet the high acceleration requirements of external transportation. The present invention provides a transport bracket for spent fuel transport containers.

[0013] The present invention solves the above-mentioned technical problems through the following technical solution:

[0014] This invention provides a transport bracket for spent fuel transport containers, characterized in that the transport bracket includes a bottom frame, at least two tilting axial supports, at least two uprights, lifting lugs, and a protective cover: the bottom frame is used to fix to a transport vehicle and support the overall structure of the transport bracket; at least two tilting axial supports are disposed at one end of the bottom frame; at least two uprights are disposed at the other end of the bottom frame; an arc-shaped support plate is disposed at the other end of the bottom frame, located between two of the uprights; lifting lugs are connected to the tilting axial supports and the upper part of the uprights, used to cooperate with a horizontal lifting device for horizontal lifting of the transport bracket together with the spent fuel transport container; and the protective cover is used to protect the outer surface of the spent fuel transport container.

[0015] According to one embodiment of the present invention, the upper part of the tilting shaft side support has a groove for accommodating the tilting shaft of the spent fuel transport container.

[0016] According to one embodiment of the present invention, the transport bracket is made of low-alloy high-strength structural steel.

[0017] According to one embodiment of the present invention, the bottom frame is composed of box beams.

[0018] According to one embodiment of the present invention, the bottom of the bottom frame is provided with bolt through holes, and the bottom frame is fixed to the transport vehicle by bolts.

[0019] According to one embodiment of the present invention, the lower part of the flip-axis side support is a box beam structure, the lower part of the flip-axis side support is connected to the bottom frame, the inner side of the flip-axis side support is provided with diagonal bracing, and the rear side of the flip-axis side support is provided with diagonal bracing.

[0020] According to one embodiment of the present invention, the column is a box beam structure, the lower part of the column is connected to the bottom frame, and the arc-shaped pillow plate is fitted with a protective sleeve on the contact surface with the spent fuel transport container.

[0021] According to one embodiment of the present invention, the protective sleeve is made of silicone rubber and aramid fiber.

[0022] According to one embodiment of the present invention, the lower part of the arc-shaped pillow board is connected to the bottom frame, and a stiffening rib is provided at the connection between the arc-shaped pillow board and the bottom frame.

[0023] According to one embodiment of the present invention, the lifting lug includes a flip-axis side lifting lug and a hoisting axis side lifting lug, wherein the flip-axis side lifting lug is connected to the upper part of the flip-axis side support; and the hoisting axis side lifting lug is connected to the upper part of the column.

[0024] According to one embodiment of the present invention, the protective cover includes a protective cover frame and a surface protective mesh, wherein the lower part of the protective cover frame is fixed to the bottom frame.

[0025] According to one embodiment of the present invention, the protective cover frame is composed of longitudinal and transverse ribs and arc-shaped steel bars, and the surface protective mesh is a metal protective mesh.

[0026] The positive and progressive effects of this invention are as follows:

[0027] The transport bracket of the present invention for spent fuel transport containers has at least the following advantages:

[0028] I. Compact structure, lightweight, and high load-bearing capacity. The transport bracket is optimized to meet the spatial constraints of various transportation modes and tools such as rail, road, and sea, while ensuring a maximum vertical acceleration of 3g, a horizontal acceleration of 5g along the axis of the spent fuel transport container, and a horizontal acceleration of 2g perpendicular to the axis of the spent fuel transport container. This meets the needs of multimodal transport (road, sea, and rail), improves transportation efficiency, and its lightweight design meets the hoisting requirements of spent fuel transport containers within nuclear power plants.

[0029] II. Excellent convenience and operational safety in loading, unloading, and transportation. The transport bracket secures all four shafts of the spent fuel transport container via supports and lifting lugs, requiring no other fixings. This simple method facilitates future maintenance. The outer layer of the bracket is covered with a mesh cover for personnel protection, preventing burns to operators.

[0030] Third, it effectively reduces wear and impact on spent fuel transport containers. The contact surfaces between the transport bracket and the spent fuel transport container are all covered with rubber protective sleeves, effectively preventing wear on the spent fuel transport container during transport and overturning. Furthermore, the support grooves, combined with the top surface of the lifting lugs, completely restrain the various axes of the spent fuel transport container, preventing slippage and impact with the bracket during transport. Attached Figure Description

[0031] The above and other features, properties and advantages of the present invention will become more apparent from the following description taken in conjunction with the accompanying drawings and embodiments, in which the same reference numerals always denote the same features, wherein:

[0032] Figure 1 This is a schematic diagram showing the usage state of the transport bracket for the spent fuel transport container of the present invention.

[0033] Figure 2 This is a schematic diagram of the support structure of the transport bracket for the spent fuel transport container of the present invention.

[0034] Figure 3 This is a schematic diagram of the transport bracket for a spent fuel transport container according to the present invention.

[0035] Figure 4This is a schematic diagram of the structure of the uprights and curved support plates in the transport bracket of the spent fuel transport container of the present invention.

[0036] Figure 5A This is a front view schematic diagram of the lifting shaft-side lifting lug in the transport bracket of the spent fuel transport container of the present invention.

[0037] Figure 5B This is a partial cross-sectional schematic diagram of the lifting lugs on the axial side of the transport bracket used for spent fuel transport containers according to the present invention.

[0038] Figure 6A This is a schematic diagram of the surface protective netting in the transport bracket of the spent fuel transport container of the present invention.

[0039] Figure 6B This is a schematic diagram of the protective cover frame in the transport tray of the spent fuel transport container of the present invention.

[0040] [Attached image labels]

[0041] Bottom frame 100

[0042] 200-degree flip-axis support

[0043] Groove 210

[0044] diagonal brace 220

[0045] 230 diagonal tie rod

[0046] Column 300

[0047] Curved pillow board 400

[0048] Rib 410

[0049] 500 hanging lugs

[0050] 510 flip-axis side lifting lug

[0051] 520 lifting lugs on the shaft side

[0052] 600 protective shield

[0053] Protective shield frame 610

[0054] Surface protective mesh 620

[0055] Spent fuel transport container 700 Detailed Implementation

[0056] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0057] Embodiments of the invention will now be described in detail with reference to the accompanying drawings. Preferred embodiments of the invention will now be described in detail, examples of which are illustrated in the drawings. Wherever possible, the same reference numerals will be used in all the drawings to denote the same or similar parts. Furthermore, although the terminology used herein is selected from commonly known and used terminology, some terms mentioned in this specification may have been chosen by the applicant at his or her discretion, and their detailed meanings are explained in the relevant sections of the description herein. Moreover, the invention should be understood not only by the actual terms used, but also by the meaning implied by each term.

[0058] like Figures 1 to 6B As shown, the present invention provides a transport bracket for a spent fuel transport container, comprising:

[0059] The bottom frame 100 is used to fix the transport vehicle and support the overall structure of the transport bracket.

[0060] At least two flip axis side supports 200 are set at one end of the bottom frame 100.

[0061] At least two uprights 300 are set at the other end of the bottom frame 100.

[0062] The curved pillow board 400 is set at the other end of the bottom frame 100, between the two columns 300.

[0063] The lifting lug 500 is connected to the upper part of the side support 200 and the column 300 of the tilting shaft, and is used to cooperate with the horizontal lifting device to carry out the horizontal lifting of the transport bracket together with the spent fuel transport container 700.

[0064] Protective cover 600 is used to protect the outer surface of spent fuel transport container 700.

[0065] The transport bracket for spent fuel transport containers provided by this invention can be used for external transportation. It can solve the problem of safe and reliable transportation of spent fuel transport containers 700 under small space, light weight, and high acceleration, and the structure needs to be convenient for tilting and hoisting, and avoid damage to the container during transportation.

[0066] The bottom frame 100 mainly serves as a structural support and to fix the spent fuel transport container 700, the transport bracket body, and the transport vehicle.

[0067] The tilting shaft support 200 is used to support the tilting shaft at the bottom of the spent fuel transport container 700 during the tilting process. During transportation, it works together with the hoisting shaft lug 520, the column 300 and the arc-shaped pillow plate 400 to bear the acceleration of the spent fuel transport container 700 in all directions, especially the total longitudinal acceleration of the spent fuel transport container 700, that is, the axial acceleration of the spent fuel transport container 700.

[0068] The column 300 and the curved support plate 400 are used to support the upper journal of the spent fuel transport container 700. During transportation, they, together with the tilting shaft support 200 and the lifting shaft lug 520, bear the lateral and vertical acceleration of the spent fuel transport container 700. Preferably, the curved support plate 400 is at a sufficient distance from the end face of the spent fuel transport container 700 to avoid interference between the spent fuel transport container 700 and the curved support plate 400 during the tilting process.

[0069] The lifting lug 500 is mainly used in conjunction with the horizontal spreader to lift the bracket and the spent fuel transport container 700 horizontally, and to bear the lateral and vertical acceleration of the spent fuel transport container 700 during transportation. The lifting lug 500 needs to be installed after the spent fuel transport container 700 is loaded onto the bracket and removed before the spent fuel transport container 700 is unloaded from the bracket.

[0070] The protective cover 600 is used to prevent operators from coming into contact with the surface of the spent fuel transport container 700. It can isolate operators from the outer surface of the spent fuel transport container 700 and prevent personnel from being burned.

[0071] Through optimized calculations, the transport bracket structure for the spent fuel transport container 700 of the present invention is compact and has high load-bearing capacity, meets the space constraints of railway transportation, and can guarantee a maximum vertical acceleration of 3g, a horizontal acceleration along the container axis of 5g, and a horizontal acceleration perpendicular to the container axis of 2g.

[0072] like Figure 2 As shown, in a preferred embodiment of the transport bracket for the spent fuel transport container of the present invention, the upper part of the tilting shaft side support 200 has a groove 210 for accommodating the tilting shaft for transporting the spent fuel transport container 700.

[0073] Preferably, the upper support block of the tilting shaft side support 200 has a groove 210, which is used to tilt the spent fuel transport container 700 in conjunction with the tilting shaft.

[0074] As a preferred embodiment of the transport bracket for the spent fuel transport container of the present invention, the transport bracket is made of low alloy high strength structural steel.

[0075] Low-alloy high-strength structural steel refers to low-alloy engineering structural steel in which a small amount of alloying elements are added to low-carbon steel, resulting in a yield strength exceeding 275 MPa in the rolled or normalized state. Low-alloy high-strength structural steel has good weldability and is easy to process and manufacture.

[0076] The transport bracket is made of low-alloy high-strength structural steel, which is lightweight and can meet the hoisting requirements of the spent fuel transport container 700 within the nuclear power plant. Furthermore, the low-alloy high-strength structural steel can withstand large loads, easily achieving the maximum external transport acceleration requirements of 3g for vertical acceleration, 5g for horizontal acceleration along the container axis, and 2g for horizontal acceleration perpendicular to the container axis.

[0077] like Figure 1 , Figure 2 and Figure 3 As shown, in a preferred embodiment of the transport bracket for spent fuel transport containers of the present invention, the bottom frame 100 is composed of box beams.

[0078] Preferably, the bottom frame 100 is a box beam structure with eccentrically arranged webs and stiffening plates 410 welded to the outside of the eccentric webs to enhance the load-bearing capacity.

[0079] like Figure 1 , Figure 2 and Figure 3 As shown, in a preferred embodiment of the transport bracket for the spent fuel transport container of the present invention, the bottom frame 100 has bolt through holes at the bottom, and the bottom frame 100 is fixed to the transport vehicle by bolts.

[0080] Preferably, the bottom of the bottom frame 100 has 16 bolt holes at the bottom, so that it can be fixed to the vehicle by bolts.

[0081] like Figure 1 , Figure 2 and Figure 3 As shown, in a preferred embodiment of the transport bracket for spent fuel transport containers of the present invention, the lower part of the tilting axial support 200 is a box beam structure, the lower part of the tilting axial support 200 is connected to the bottom frame 100, the inner side of the tilting axial support 200 is provided with diagonal bracing 230, and the rear side of the tilting axial support 200 is provided with diagonal bracing 220.

[0082] To enhance the load-bearing capacity of the tilting axle support 200, diagonal braces 220 and diagonal tie rods 230 are provided on both sides. The diagonal tie rods 230 are positioned to avoid the tilting path of the spent fuel transport container 700. The diagonal brace 220 is a box-beam structure with threaded holes on its upper surface for fixing the protective cover 600. The design dimensions of the diagonal tie rods 230 and diagonal braces 220 have been optimized to avoid stress concentration under load acceleration while meeting the above requirements.

[0083] like Figure 1 , Figure 2 and Figure 3As shown, in a preferred embodiment of the transport bracket for the spent fuel transport container of the present invention, the column 300 is a box beam structure, the lower part of the column 300 is connected to the bottom frame 100, and the contact surface between the arc-shaped pillow plate 400 and the spent fuel transport container 700 is equipped with a protective sleeve.

[0084] Preferably, the lower part of the column 300 is welded to the bottom frame 100, and the upper part of the column 300 has a through hole, which is bolted to the lifting lug 520 on the lifting shaft side. The arc-shaped pillow plate 400 supports the journal on the lifting shaft side of the spent fuel transport container 700.

[0085] The protective sleeve effectively prevents wear and tear on the spent fuel transport container 700 during transportation and overturning. The protective sleeve is preferably a rubber sleeve, installed on the contact surface between the bolster and the container, preventing scratches from friction between the bolster and the container during transport.

[0086] In a preferred embodiment of the present invention for a transport bracket for a spent fuel transport container, the protective sleeve is made of silicone rubber and aramid fiber.

[0087] Preferably, the protective sleeve is made of high-temperature resistant silicone rubber and contains aramid fibers to enhance abrasion resistance.

[0088] like Figure 4 As shown, in a preferred embodiment of the transport bracket for a spent fuel transport container of the present invention, the lower part of the arc-shaped pillow plate 400 is connected to the bottom frame 100, and a stiffening plate 410 is provided at the connection between the arc-shaped pillow plate 400 and the bottom frame 100.

[0089] Preferably, the curved pillow plate 400 is welded to the bottom frame 100, and the connection is provided with a stiffening plate 410 to enhance the load-bearing capacity.

[0090] like Figure 1 and Figure 3 As shown, in a preferred embodiment of the transport bracket for spent fuel transport containers of the present invention, the lifting lug 500 includes a tilting shaft-side lifting lug 510 and a lifting shaft-side lifting lug 520. The tilting shaft-side lifting lug 510 is connected to the upper part of the tilting shaft-side support 200; the lifting shaft-side lifting lug 520 is connected to the upper part of the column 300.

[0091] The tilting shaft-side lifting lug 510 is mainly used in conjunction with the horizontal spreader to horizontally lift the bracket and the spent fuel transport container 700, and to bear the vertical upward acceleration of the spent fuel transport container 700 during transportation. The tilting shaft-side lifting lug 510 needs to be installed after the spent fuel transport container 700 is loaded onto the bracket, and removed before the spent fuel transport container 700 is unloaded from the bracket.

[0092] Preferably, the lower part of the tilting shaft side lifting lug 510 adopts a box beam structure. To facilitate installation and disassembly, four through holes are opened at the bottom of the box beam, corresponding to the through holes at the top of the tilting shaft side support 200 blocks, and are fixed with bolts and nuts. The tilting shaft side lifting lug 510 is connected to the horizontal lifting device through a pin.

[0093] The lifting lug 520 is mainly used in conjunction with the horizontal spreader to lift the bracket and spent fuel transport container 700 horizontally, and to bear the lateral and vertical acceleration of the spent fuel transport container 700 during transportation. The lifting lug 520 needs to be installed after the spent fuel transport container 700 is loaded onto the bracket, and removed before the spent fuel transport container 700 is unloaded from the bracket.

[0094] Preferably, for ease of installation and disassembly, the lifting lug 520 on the lifting shaft side is fixed to the column 300 with bolts and nuts. The lug hole of the lifting lug 520 on the lifting shaft side is connected to the horizontal lifting device via a pin. The lug plate of the lifting lug 520 on the lifting shaft side is at the same height as the lug plate of the flipping shaft side lifting lug 510, and there is sufficient clearance between it and the protective cover 600 to facilitate the installation and disassembly of the horizontal lifting device pin.

[0095] like Figure 1 and Figure 3 As shown, in a preferred embodiment of the transport bracket for spent fuel transport containers of the present invention, the protective cover 600 includes a protective cover frame 610 and a surface protective net 620, and the lower part of the protective cover frame 610 is fixed to the bottom frame 100.

[0096] like Figure 1 and Figure 3 As shown, in a preferred embodiment of the transport bracket for the spent fuel transport container of the present invention, the protective cover frame 610 is composed of longitudinal and transverse ribs and arc-shaped steel bars, and the surface protective net 620 is a metal protective net.

[0097] The lower part of the protective cover frame 610 is connected to the bottom frame 100 and the diagonal brace 220, and is fixed with bolts. The frame design does not take into account transportation acceleration, and the metal protective net is fixed to the protective cover frame 610.

[0098] This invention relates to a transport bracket for spent fuel transport containers, capable of meeting the in-plant and out-of-plant transfer operation requirements of spent fuel transport containers in nuclear power plants. The bracket body includes a structure capable of bearing the load of the spent fuel transport container under transport conditions, while also providing an installation platform for container tilting and hoisting.

[0099] Compared with existing technologies, the transport bracket of this invention for spent fuel transport containers has a compact structure and small size, meeting the requirements of various transportation methods. It has a strong load-bearing capacity, capable of withstanding any acceleration of the container cargo under rail, road, and water transport conditions. Instead of a tie-like method, it uses lifting lugs and supports to secure the container, facilitating installation and maintenance. The protective sleeve effectively prevents wear and tear on the container during tipping and transport.

[0100] In summary, the transport bracket of the present invention for spent fuel transport containers has the following advantages:

[0101] I. Compact structure, lightweight, and high load-bearing capacity. The transport bracket is optimized to meet the spatial constraints of various transportation modes and tools such as rail, road, and sea, while ensuring a maximum vertical acceleration of 3g, a horizontal acceleration of 5g along the axis of the spent fuel transport container 700, and a horizontal acceleration of 2g perpendicular to the axis of the spent fuel transport container 700. This meets the needs of multimodal transport (road, sea, and rail), improves transportation efficiency, and its lightweight design meets the hoisting requirements of the spent fuel transport container 700 within the nuclear power plant.

[0102] II. Excellent convenience and operational safety in loading, unloading, and transportation. All four axes of the spent fuel transport container 700 are bolted to the transport bracket via supports (including the tilting axis side supports 200 and the columns 300) and lifting lugs 500, requiring no other fixings. This simple method facilitates later maintenance. A mesh cover is used on the outer layer of the bracket for personnel protection, preventing burns to operators.

[0103] Third, it effectively reduces wear and impact on the spent fuel transport container 700. Both the transport bracket and the contact surfaces of the spent fuel transport container 700 are covered with rubber protective sleeves, effectively preventing wear on the spent fuel transport container 700 during transport and overturning. Furthermore, the supporting grooves 210, in conjunction with the top surface of the lifting lugs 500, completely restrain all axes of the spent fuel transport container 700, preventing slippage and impact with the bracket during transport.

[0104] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. A transport bracket for a spent fuel transport container, characterized in that, The transport bracket is made of low-alloy high-strength structural steel, and the transport bracket includes: The bottom frame, composed of box beams, is used to fix the transport vehicle and support the overall structure of the transport bracket; bolt through holes are provided at the bottom of the bottom frame, and the bottom frame is fixed to the transport vehicle by bolts. At least two flip-axis side supports are provided at one end of the bottom frame; the lower part of the flip-axis side support is a box beam structure, the lower part of the flip-axis side support is connected to the bottom frame, the inner side of the flip-axis side support is provided with diagonal bracing, and the rear side of the flip-axis side support is provided with diagonal bracing. At least two columns are provided at the other end of the bottom frame; the columns are box beam structures and the lower part of the columns is connected to the bottom frame. An arc-shaped pillow board is located at the other end of the bottom frame, between the two columns; a protective sleeve is installed on the contact surface between the arc-shaped pillow board and the spent fuel transport container, the protective sleeve being made of silicone rubber and aramid fiber; the lower part of the arc-shaped pillow board is connected to the bottom frame, and a stiffening plate is provided at the connection between the arc-shaped pillow board and the bottom frame; The lifting lugs are connected to the tilting shaft side support and the upper part of the column, and are used to cooperate with the horizontal lifting device for horizontal lifting of the transport bracket together with the spent fuel transport container; the lifting lugs include tilting shaft side lifting lugs and lifting shaft side lifting lugs, the tilting shaft side lifting lugs are connected to the upper part of the tilting shaft side support; the lifting shaft side lifting lugs are connected to the upper part of the column; A protective cover is used to protect the outer surface of a spent fuel transport container; the protective cover includes a protective cover frame and a surface protective net, the lower part of the protective cover frame being fixed to the bottom frame.

2. The transport bracket for spent fuel transport containers as described in claim 1, characterized in that, The upper part of the side support of the tilting shaft has a groove to accommodate the tilting shaft of the spent fuel transport container.

3. The transport bracket for spent fuel transport containers as described in claim 1, characterized in that, The protective cover frame is composed of longitudinal and transverse ribs and arc-shaped steel bars, and the surface protective mesh is a metal protective mesh.

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