An auxiliary module for spent fuel package transportation loading reinforcement

Abstract

The present invention discloses an auxiliary module for the transportation, loading and reinforcement of spent fuel packages, which comprises a bottom plate, on which transverse blocks and longitudinal blocks for connecting with a spent fuel package transport bracket are fixedly connected, the transverse blocks are arranged at intervals along the length direction of the bottom plate, and the longitudinal blocks are arranged at intervals along the width direction of the bottom plate; the transverse blocks limit the transverse movement of the spent fuel package transport bracket along the bottom plate surface, and the longitudinal blocks limit the longitudinal movement of the spent fuel package transport bracket along the bottom plate surface. A hoisting mechanism is arranged on the bottom plate, and the hoisting mechanism is used for hoisting and transportation of the bottom plate; a plurality of bolt holes are arranged on the bottom plate, and some of the bolt holes correspond to the bolt connection holes on the spent fuel package transport bracket. The present invention has the effect of improving the connection strength between the spent fuel package transport bracket and the transportation vehicle.

Description

Technical Field

[0001] The invention relates to the technical field of spent fuel package auxiliary transportation devices, and in particular to an auxiliary module used for spent fuel package transportation, loading and reinforcement. Background Art

[0002] During the transportation of spent fuel, the spent fuel needs to be loaded into a dedicated transport container. Usually, the transport unit consisting of the loaded spent fuel container and the transport bracket is called a spent fuel package. Due to the characteristics of spent fuel being highly radioactive and socially sensitive, its transportation has extremely high safety requirements. To ensure the integrity of the spent fuel assemblies during transportation, the spent fuel package must be able to withstand any acceleration, vibration or resonance that may occur under normal transportation conditions. In view of this, the SSG-26 Advisory Material for the IAEA Transport Regulations (2012 Edition) issued by the International Atomic Energy Agency limits the horizontal and vertical acceleration of the package during transportation.

[0003] The utility model patent with authorization announcement number CN2613412Y discloses a railway cargo loading reinforcement inner baffle, including a bottom plate, on which at least three baffles are vertically fixed, and the baffles are radially evenly distributed on a circumference of the bottom plate, and through holes are also provided on the bottom plate. When using this solution to load and reinforce cargo, it can be achieved by simply fastening it to a flatbed truck, with low labor intensity.

[0004] Reference Figure 1 The "Technical Requirements for Multimodal Transport Interfaces of Spent Fuel Packages (Interim)" also made relatively rigid restrictions on the structural form of the transport bracket. Connection holes 71 are provided at both ends of the spent fuel package transport bracket 7 in the width direction. A maximum of 8 connection holes are arranged in the length direction of the spent fuel package transport bracket 7 at prescribed intervals, and a maximum of 16 connection holes 71 are arranged. Bolts of specified specifications are passed through the connection holes 71 and then connected and fixed to the transport vehicle.

[0005] The above-mentioned prior art solutions have the following defects: according to the existing transportation loading reinforcement solution, the spent fuel package transportation bracket is connected and fixed to the transportation vehicle during transportation, and only the bolts of the spent fuel package transportation bracket are used for loading reinforcement. During the road, rail and sea transportation, there is a phenomenon of insufficient loading reinforcement strength in the horizontal direction.

[0006] At present, there are many types of spent fuel transport containers used for spent fuel transportation in China, and their transport bracket structures are also different. If the traditional loading and reinforcement method is used, the fixed blocks are directly welded on the transport vehicle, and the blocks need to be de-welded and disassembled before and after each loading and unloading. The operation process is complicated and causes great damage to the bottom plate of the transport vehicle.

[0007] Due to the strict design specifications for spent fuel transport containers, directly modifying their transport brackets requires redesign and use permit application, which takes a long time. Summary of the invention

[0008] The object of the present invention is to provide an auxiliary module for the transportation loading and reinforcement of spent fuel packages, which has the effect of improving the connection strength between the spent fuel package transportation bracket and the transportation vehicle.

[0009] The above technical objectives of the present invention are achieved through the following technical solutions:

[0010] An auxiliary module for transport loading and reinforcement of spent fuel packages, comprising a bottom plate, to which a transverse stopper and a longitudinal stopper for connecting with a spent fuel package transport bracket are fixedly connected, wherein the transverse stoppers are arranged at intervals along the length direction of the bottom plate, and the longitudinal stoppers are arranged at intervals along the width direction of the bottom plate;

[0011] The lateral stopper limits the lateral movement of the spent fuel cargo package transport bracket along the bottom plate surface, and the longitudinal stopper limits the longitudinal movement of the spent fuel cargo package transport bracket along the bottom plate surface;

[0012] The bottom plate is provided with a hoisting mechanism, and the hoisting mechanism is used for hoisting and transporting the bottom plate;

[0013] The bottom plate is provided with a plurality of bolt holes, and some of the bolt holes correspond to the bolt connection holes on the spent fuel package transport bracket.

[0014] By adopting the above technical solution, after the spent fuel package transport bracket is placed on the bottom plate, the two surfaces of the spent fuel package transport bracket that are opposite or opposite to each other along the length direction thereof contact the transverse block, and the two surfaces of the spent fuel package transport bracket that are opposite or opposite to each other along the width direction thereof contact the longitudinal block, and the bolts are passed through the bolt connection holes on the spent fuel package transport bracket and the bolt holes on the bottom plate and then connected to the transportation vehicle, thereby connecting the spent fuel package transport bracket, the bottom plate and the transportation vehicle. Compared with the original direct connection of the spent fuel package transport bracket to the transportation vehicle through a fixed number of bolts, the connection stability and strength between the bottom plate and the spent fuel package transport bracket are improved, and then the bolts are passed through the remaining bolt holes and then connected to the transportation vehicle, thereby avoiding modification of the spent fuel package transport bracket and improving the structural strength and stability of the connection between the bottom plate and the transportation vehicle, thereby ensuring the stability of the spent fuel package transport bracket when being transported by the transportation vehicle.

[0015] The present invention is further configured as follows: a weight-reducing groove is provided on the bottom plate; and a reinforcing plate located in the weight-reducing groove is fixedly provided on the bottom plate.

[0016] By adopting the above technical solution, the weight-reducing groove can reduce the weight of the bottom plate, making it easier to move and transport the bottom plate. The reinforcement plate can increase the structural strength of the bottom plate itself and improve the structural stability of the bottom plate.

[0017] The present invention is further configured such that: the transverse blocks are all located on the outside of the spent fuel package transport bracket, and / or the longitudinal blocks are all located on the inside of the spent fuel package transport bracket.

[0018] By adopting the above technical solution, since the lateral width is often limited during transportation, the lateral stopper is located on the outside of the spent fuel package transport bracket to reduce the width of the bottom plate, making it easier to connect the bottom plate to the transport vehicle and preventing the bottom plate from exceeding the specified width of the transport vehicle; the longitudinal stopper located on the outside of the spent fuel package transport bracket facilitates observation of the relative position between the spent fuel package transport bracket and the longitudinal stopper when the spent fuel package transport bracket is connected to the bottom plate and the longitudinal stopper.

[0019] The present invention is further configured as follows: the transverse block and / or the longitudinal block is a U-shaped block, the U-shaped block includes a bottom block and two side blocks fixed on the same side of the two ends of the bottom block, and the surface of the bottom block facing away from the opening of the U-shaped block is used to contact the spent fuel cargo package transport bracket.

[0020] By adopting the above technical solution, the U-shaped transverse stopper has good structural stability and can maintain a stable connection with the bottom plate after being subjected to the force of the spent fuel package transport bracket.

[0021] The present invention is further configured as follows: the transverse stopper is connected to a transverse pressing member which is pressed and connected to the spent fuel package transport bracket;

[0022] And\or the longitudinal stopper is connected to a longitudinal clamping piece which is tightly connected to the spent fuel package transport bracket.

[0023] By adopting the above technical solution, the connection between the transverse block and the spent fuel package transport bracket is achieved through the transverse clamping piece, or the connection between the longitudinal block and the spent fuel package transport bracket is achieved through the longitudinal clamping piece. When the transverse block or the longitudinal block does not directly contact the spent fuel package transport bracket, the connection between the transverse block or the longitudinal block and the spent fuel package transport bracket is ensured.

[0024] The present invention is further configured as follows: a surface of the bottom plate facing away from the transverse stopper is fixedly connected to a limiting member, and the limiting member is used to limit the relative sliding between the bottom plate and the transport vehicle.

[0025] By adopting the above technical solution, during ship transportation, two parallel fixed channel steels are often fixed on the ship. When the surface of the transportation tool is an uneven surface, in addition to using bolts to connect with the transportation tool, the sliding of the bottom plate and the surface of the transportation tool is limited by limiting parts, thereby improving the stability of the connection between the bottom plate and the transportation tool.

[0026] The present invention is further configured as follows: the limiting member comprises an L-shaped limiting plate located at four end corners of the bottom plate, and the L-shaped limiting plate is used for connecting and fixing with the transportation vehicle.

[0027] By adopting the above technical solution, the L-shaped limiting plate contacts the outer side surface of the fixed fixed channel steel, thereby limiting the relative sliding between the limiting member and the fixed channel steel, and improving the stability of the connection between the bottom plate and the fixed channel steel.

[0028] The present invention is further configured as follows: a plurality of module loading positioning guide pins and a plurality of cargo package loading positioning guide pins are connected to the bottom plate with their axes along the thickness direction of the bottom plate, and the module loading positioning guide pins and / or the cargo package loading positioning guide pins are provided with chamfers at one end away from the bottom plate; a surface of the longitudinal block that is away from one end of the bottom plate and in contact with the spent fuel cargo package transport bracket is provided with a chamfer; and / or a surface of the transverse block that is away from one end of the bottom plate and in contact with the spent fuel cargo package transport bracket is provided with a chamfer.

[0029] By adopting the above technical solution, the module loading positioning pins facilitate accurate connection between the bottom plate and the transport vehicle, and the cargo package loading positioning guide pins facilitate accurate connection between the bottom plate and the spent fuel cargo package transport bracket. The chamfer arrangement facilitates the spent fuel cargo package transport bracket to move in the vertical direction to connect with the longitudinal block or the transverse block.

[0030] The present invention is further configured as follows: the module loading positioning guide pins are provided with at least two located at opposite corners of the bottom plate;

[0031] And\or the cargo package loading positioning guide pins are provided with at least two located at opposite corners of the bottom plate.

[0032] By adopting the above technical solution, the module loading positioning guide pins located at the diagonal corners of the bottom plate are easy to install, and the distance between the two module loading positioning guide pins is maximized, thereby improving the positioning accuracy when the bottom plate is connected to the transportation vehicle; or the cargo package loading positioning guide pins located at the diagonal corners of the bottom plate are easy to install, and the distance between the two cargo package loading positioning guide pins is maximized, thereby improving the positioning accuracy when the bottom plate is connected to the spent fuel cargo package transport bracket.

[0033] The present invention is further configured as follows: the lifting mechanism includes at least two lifting ears fixed on the base plate, and the angle between the connection between at least two of the lifting ears and the base plate and the line connecting the center of gravity of the base plate is an obtuse angle or greater than 90 degrees and not greater than 180 degrees.

[0034] By adopting the above technical solution, the setting of the lifting lug makes it easier to connect the hook with the base plate, and the two lifting lugs at this position can realize the lifting of the base plate.

[0035] In summary, the present invention includes at least one of the following beneficial effects:

[0036] 1. After placing the spent fuel package transport bracket on the bottom plate, the two surfaces of the spent fuel package transport bracket facing each other along the length direction thereof are in contact with the transverse stopper, and the two surfaces of the spent fuel package transport bracket facing each other along the width direction thereof are in contact with the longitudinal stopper, and the bolts are passed through the bolt connection holes on the spent fuel package transport bracket and the bolt holes on the bottom plate and then connected to the transport vehicle, thereby connecting the spent fuel package transport bracket, the bottom plate and the transport vehicle. Compared with the original method of directly connecting the spent fuel package transport bracket to the transport vehicle through a fixed number of bolts, the connection stability and strength between the bottom plate and the spent fuel package transport bracket are improved, and then the spent fuel package transport bracket is connected to the transport vehicle after passing through the remaining bolt holes, thereby avoiding modification of the spent fuel package transport bracket and improving the structural strength and stability of the connection between the bottom plate and the transport vehicle, thereby ensuring the stability of the spent fuel package transport bracket when being transported by the transport vehicle;

[0037] 2. The U-shaped transverse stopper has good structural stability and can maintain a stable connection with the bottom plate after being subjected to the force of the spent fuel package transport bracket;

[0038] 3. The connection between the transverse block and the spent fuel package transport bracket is achieved through the transverse clamping piece, or the connection between the longitudinal block and the spent fuel package transport bracket is achieved through the longitudinal clamping piece. When the transverse block or the longitudinal block does not directly contact the spent fuel package transport bracket, the connection between the transverse block or the longitudinal block and the spent fuel package transport bracket is ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic diagram of the overall structure of a spent fuel package transport bracket in the prior art;

[0040] Figure 2 is a schematic diagram of the overall top view structure of the first embodiment;

[0041] Figure 3 It is a schematic diagram of the overall structure of fixed channel steel on a ship in the prior art;

[0042] Figure 4 is a schematic diagram of the overall top view structure of the sixth embodiment;

[0043] Figure 5 yes Figure 4 Schematic diagram of the cross-sectional structure at AA in the middle;.

[0044] In the figure, 1, bottom plate; 11, weight reduction groove; 12, reinforcement plate; 13, bolt hole; 2, lifting mechanism; 21, lifting lug; 3, cargo package loading positioning guide pin; 4, module loading positioning guide pin; 5, transverse stopper; 6, longitudinal stopper; 7, spent fuel cargo package transport bracket; 71, connection hole; 8, fixed channel steel; 9, limit piece; 91, L-shaped limit plate. DETAILED DESCRIPTION

[0045] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0046] Embodiment 1

[0047] Reference Figure 2 The present invention discloses an auxiliary module for the transportation, loading and reinforcement of a spent fuel package, including a bottom plate 1, which is an integral steel plate and a rectangular steel plate. The bottom plate 1 is provided with 24 bolt holes 13, of which 16 bolt holes 13 correspond to the bolt connection holes on the spent fuel package transportation bracket 7, and the bolt holes 13 corresponding to the spent fuel package transportation bracket 7 are arranged on both sides along the width direction of the bottom plate 1, 8 on each side, and the remaining 8 bolt holes 13 are arranged in pairs at the four end corners of the bottom plate 1 and can be used to connect with the transportation vehicle.

[0048] The bottom plate 1 is provided with a weight-reducing groove 11, which is a square groove and includes end grooves provided at both ends of the bottom plate 1 in the length direction and two inner grooves provided between the two end grooves and spaced apart along the length direction of the bottom plate 1. The provision of the weight-reducing groove 11 can reduce the mass of the bottom plate 1 and facilitate the movement and transportation of the bottom plate 1.

[0049] Reinforcement plates 12 are welded and fixed at the four end corners of the inner groove. The reinforcement plates 12 are isosceles right-angled triangle plates with two right-angled sides welded and fixed to the inner groove side surfaces. The reinforcement plates 12 can increase the structural strength of the bottom plate 1 itself and improve the structural stability of the bottom plate 1.

[0050] A transverse stopper 5 and a longitudinal stopper 6 for connecting with a spent fuel package transport bracket 7 are fixedly connected to the bottom plate 1. The transverse stoppers 5 are arranged at intervals along the length direction of the bottom plate 1. Three transverse stoppers 5 are respectively arranged at both ends of the bottom plate 1 in the length direction, and the three transverse stoppers 5 located at the same end of the length direction of the bottom plate 1 are arranged at intervals along the width direction of the bottom plate 1; the longitudinal stoppers 6 are arranged at intervals along the width direction of the bottom plate 1. Three longitudinal stoppers 6 are respectively arranged at both ends of the bottom plate 1 in the width direction, and the three transverse stoppers 5 located at the same end of the width direction of the bottom plate 1 are arranged at intervals along the length direction of the bottom plate 1.

[0051] The transverse block 5 and the longitudinal block 6 are both U-shaped blocks. In other embodiments, the transverse block 5 and the longitudinal block 6 can be of any shape. In this embodiment, the U-shaped block is welded to the bottom plate 1. The U-shaped block is a horseshoe-shaped integral cast iron block. The U-shaped block includes a bottom block and two side blocks integrally formed on the same side of both ends of the bottom block. The surface of the bottom block facing away from the opening of the U-shaped block is used to contact the spent fuel cargo package transport bracket 7.

[0052] The openings of the transverse stoppers 5 face each other, and the transverse stoppers 5 are all located on the inner side of the spent fuel package transport bracket 7; the openings of the longitudinal stoppers 6 face each other, and the longitudinal stoppers 6 are all located on the outer side of the spent fuel package transport bracket 7. The transverse stoppers 5 limit the transverse movement of the spent fuel package transport bracket 7 along the surface of the bottom plate 1, and the longitudinal stoppers 6 limit the longitudinal movement of the spent fuel package transport bracket 7 along the surface of the bottom plate 1.

[0053] The U-shaped transverse stopper 5 has good structural stability and can maintain a stable connection with the bottom plate 1 after being subjected to the force of the spent fuel package transport bracket 7. Since the lateral width is often limited during transportation, the transverse stopper 5 is located outside the spent fuel package transport bracket 7 to reduce the width of the bottom plate 1, making it easier to connect the bottom plate 1 to the transport vehicle and preventing the bottom plate 1 from exceeding the specified width of the transport vehicle.

[0054] The bottom plate 1 is connected with a module loading positioning guide pin 4 and a cargo package loading positioning guide pin 3 whose axes are along the thickness direction of the bottom plate 1. The module loading positioning guide pin 4 and the cargo package loading positioning guide pin 3 are both provided with two located at the diagonal angles of the bottom plate 1, and the module loading positioning guide pin 4 and the cargo package loading positioning guide pin 3 are located at the same diagonal angles of the bottom plate 1. The module loading positioning guide pin 4 and the cargo package loading positioning guide pin 3 are both provided with chamfers at one end away from the bottom plate 1. The module loading positioning guide pin 4 facilitates accurate connection of the bottom plate 1 with the transport vehicle, and the cargo package loading positioning guide pin 3 facilitates accurate connection of the bottom plate 1 with the spent fuel package transport bracket 7.

[0055] A lifting mechanism 2 is provided on the bottom plate 1, and the lifting mechanism 2 is used for lifting and transporting the bottom plate 1. The lifting mechanism 2 includes at least two lifting ears 21 fixed on the bottom plate 1, and the angle between the connection between the at least two lifting ears 21 and the bottom plate 1 and the line connecting the center of gravity of the bottom plate 1 is an obtuse angle or greater than 90 degrees and not greater than 180 degrees. In this embodiment, the lifting ears 21 are fixed at the four end corners of the bottom plate 1, and in other embodiments, the lifting ears 21 can be two fixedly provided at the diagonal corners of the bottom plate 1. The provision of the lifting ears 21 facilitates the connection between the hook and the bottom plate 1.

[0056] The implementation principle of the above embodiment is:

[0057] The lifting equipment is connected to the lifting lug 21 to lift the base plate above the transport vehicle, and the module loading positioning guide pin 4 is used to complete the module loading positioning. Bolts are used to pass through the 8 bolt holes 13 at the four end corners of the base plate 1 to connect with the transport vehicle, thus completing the module loading.

[0058] The spent fuel package transport bracket 7 is lifted to the top of the bottom plate 1, and the spent fuel package transport bracket 7 is positioned through the package loading positioning guide pins 3. The spent fuel package, transport module, and transport vehicle are connected and fastened through the bolt holes 13 to complete the loading of the spent fuel package transport bracket 7.

[0059] After arriving at the destination, the bolts between the bottom plate, the transport vehicle and the spent fuel package transport bracket 7 are removed, the spent fuel package transport bracket 7 is lifted off the bottom plate, the bolts between the bottom plate and the transport vehicle are removed, and the bottom plate is lifted by the lifting tool, thus completing the unloading of the bottom plate 1 and the spent fuel package transport bracket 7.

[0060] Embodiment 2

[0061] An auxiliary module for transport loading and reinforcement of spent fuel packages, which is different from Example 1 in that a surface of a longitudinal stopper 6 away from one end of a bottom plate 1 and in contact with a spent fuel package transport bracket 7 is provided with a chamfer; a surface of a transverse stopper 5 away from one end of a bottom plate 1 and in contact with a spent fuel package transport bracket 7 is provided with a chamfer. The chamfer facilitates the spent fuel package transport bracket 7 to move in a vertical direction to connect with the longitudinal stopper 6 or the transverse stopper 5.

[0062] Embodiment 3

[0063] An auxiliary module for transporting, loading and reinforcing a spent fuel package, which differs from Example 1 in that a transverse clamping piece which is pressed and connected to a spent fuel package transport bracket 7 is connected to the transverse stopper 5. In this embodiment, the transverse clamping piece is configured as a bolt which is threadedly connected to the transverse stopper 5. After the bolt thread passes through the transverse stopper 5, it is pressed and connected to the spent fuel package transport bracket 7. In other embodiments, it may be other connecting pieces which are pressed and connected to the spent fuel package transport bracket 7.

[0064] Or the longitudinal stopper 6 is connected to a longitudinal clamping piece which is tightly connected to the spent fuel package transport bracket 7. In this embodiment, the longitudinal clamping piece is configured as a bolt which is threadedly connected to the longitudinal stopper 6. After the bolt thread passes through the longitudinal stopper 6, it is tightly connected to the spent fuel package transport bracket 7. In other embodiments, it may be other connecting pieces which are tightly connected to the spent fuel package transport bracket 7.

[0065] The implementation principle of the above embodiment is:

[0066] The connection between the transverse stopper 5 and the spent fuel package transport bracket 7 is achieved through a transverse clamping piece, or the connection between the longitudinal stopper 6 and the spent fuel package transport bracket 7 is achieved through a longitudinal clamping piece. When the transverse stopper 5 or the longitudinal stopper 6 does not directly contact the spent fuel package transport bracket 7, the connection between the transverse stopper 5 or the longitudinal stopper 6 and the spent fuel package transport bracket 7 is ensured.

[0067] Embodiment 4

[0068] An auxiliary module for transporting, loading and reinforcing a spent fuel package, which differs from Example 1 in that the transverse block 5 and the longitudinal block 6 are both long strips, which are connected end to end in sequence to form a square frame, and the square frame is connected to a spent fuel package transport bracket 7.

[0069] Embodiment 5

[0070] An auxiliary module for transport loading and reinforcement of spent fuel packages, which is different from Example 1 in that the transverse block 5 and the longitudinal block 6 are both cast iron with a T-shaped horizontal cross section. The transverse block 5 and the longitudinal block 6 are both fixed to the bottom plate with bolts. In other embodiments, the transverse block 5 and the longitudinal block 6 may be rigid parts with other cross sections, such as L-shaped or E-shaped.

[0071] Embodiment 6

[0072] An auxiliary module for transport, loading and reinforcement of spent fuel packages, which is different from Example 1 in that the auxiliary module is used for connection and fixation to a ship.

[0073] Reference Figure 3 Two mutually parallel fixed channel steels 8 are fixed on the existing ship transport plate, and the fixed channel steel 8 is provided with fixing holes corresponding to the connection holes 71 on the spent fuel package transport bracket 7, and the fixing holes are threaded holes.

[0074] Reference Figure 4 and Figure 5 The surface of the bottom plate 1 facing away from the transverse stopper 5 is fixedly connected with a limiting member 9. The limiting member 9 is welded to the bottom plate 1 in this embodiment, and can be bolted to the bottom plate 1 in other embodiments. The limiting member 9 is used to further limit the relative sliding between the bottom plate 1 and the fixed channel steel 8. The limiting member 9 includes an L-shaped limiting plate 91 located at the four end corners of the bottom plate 1. The cross section of the L-shaped limiting plate 91 on the horizontal plane is L-shaped. The L-shaped limiting plate 91 is located outside the rectangular frame surrounded by the two fixed channel steels 8 and contacts the vertical outer side surfaces of the two fixed channel steels 8 facing away from each other, thereby limiting the relative sliding between the bottom plate 1 and the fixed channel steel 8. The openings of the four L-shaped limiting plates 91 are all facing the middle position of the bottom plate 1. In other embodiments, the L-shaped limiting plates 91 are such that the openings of the L-shaped limiting plates 91 at both ends in the length direction of the bottom plate 1 are opposite to each other, and the openings of the L-shaped limiting plates 91 at both ends in the width direction of the bottom plate 1 are opposite to each other.

[0075] A stabilizing plate is fixedly disposed on the outer side of the L-shaped limiting plate 91 . The stabilizing plate is an L-shaped thin plate with an opening facing the L-shaped limiting plate 91 . A circular hole is disposed on the L-shaped limiting plate 91 .

[0076] Embodiment 7

[0077] An auxiliary module for transport, loading and reinforcement of spent fuel packages, which differs from Example 6 in that the limiting member includes a limiting block fixed to the bottom plate, and a plurality of limiting blocks are arranged in the length direction and width direction of the fixed channel steel.

[0078] In this embodiment, three limit blocks are respectively arranged at both ends of the bottom plate in the width direction, and the three limit blocks are respectively in contact with the opposite surfaces of the two fixed channel steels, and the three limit blocks are arranged at intervals along the length direction of the bottom plate. Two limit blocks are respectively arranged at both ends of the bottom plate in the length direction, and the two limit blocks at both ends are respectively in contact with the side surfaces of the two fixed channel steels in the length direction, thereby limiting the relative sliding between the bottom plate and the fixed channel steel.

[0079] In other embodiments, the limiting member is a rectangular frame sleeved on the outside of the two fixed channel steels.

[0080] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. An auxiliary module for transporting, loading and reinforcing a spent fuel package, comprising a bottom plate (1), Features: The bottom plate (1) is fixedly connected with a transverse stopper (5) and a longitudinal stopper (6) for connecting with a spent fuel package transport bracket, wherein the transverse stoppers (5) are arranged at intervals along the length direction of the bottom plate (1), and the longitudinal stoppers (6) are arranged at intervals along the width direction of the bottom plate (1); The transverse stopper (5) limits the transverse movement of the spent fuel package transport bracket along the surface of the bottom plate (1), and the longitudinal stopper (6) limits the longitudinal movement of the spent fuel package transport bracket along the surface of the bottom plate (1); The base plate (1) is provided with a lifting mechanism (2), and the lifting mechanism (2) is used for lifting and transporting the base plate (1); The bottom plate (1) is provided with a plurality of bolt holes (13), and some of the bolt holes (13) correspond to the bolt connection holes on the spent fuel package transport bracket; The transverse stopper (5) and / or the longitudinal stopper (6) are U-shaped blocks, the U-shaped block comprising a bottom block and two side blocks fixed to the same side of two ends of the bottom block, the surface of the bottom block facing away from the opening of the U-shaped block is used to contact the spent fuel package transport bracket; A limiting member (8) is fixedly connected to the surface of the bottom plate (1) facing away from the transverse stopper (5), and the limiting member (8) is used to limit the relative sliding between the bottom plate (1) and the transport vehicle; The limiting member (8) comprises an L-shaped limiting plate (81) located at four end corners of the bottom plate (1), and the L-shaped limiting plate (81) is used to be connected and fixed to the transportation vehicle; The bottom plate (1) is connected with a plurality of module loading positioning guide pins (4) and a plurality of cargo package loading positioning guide pins (3) whose axes are along the thickness direction of the bottom plate (1); the ends of the module loading positioning guide pins (4) and / or the cargo package loading positioning guide pins (3) away from the bottom plate (1) are provided with chamfers; A surface of the longitudinal stopper (6) which is away from one end of the bottom plate (1) and in contact with the spent fuel package transport bracket is provided with a chamfer; and / or a surface of the transverse stopper (5) which is away from one end of the bottom plate (1) and in contact with the spent fuel package transport bracket is provided with a chamfer.

2. An auxiliary module for transport, loading and reinforcement of spent fuel packages according to claim 1, Features: A weight-reducing groove (11) is provided on the bottom plate (1); and a reinforcing plate (12) located in the weight-reducing groove (11) is fixedly provided on the bottom plate (1).

3. An auxiliary module for transport, loading and reinforcement of spent fuel packages according to claim 1, Features: The transverse stoppers (5) are all located on the outside of the spent fuel package transport bracket, and / or the longitudinal stoppers (6) are all located on the inside of the spent fuel package transport bracket.

4. An auxiliary module for transport, loading and reinforcement of spent fuel packages according to claim 1, Features: The transverse stopper (5) is connected to a transverse pressing piece which is tightly connected to the spent fuel package transport bracket; And\or the longitudinal stopper (6) is connected to a longitudinal clamping piece which is tightly connected to the spent fuel package transport bracket.

5. An auxiliary module for transport, loading and reinforcement of spent fuel packages according to claim 1, Features: The module loading positioning guide pins (4) are provided with at least two located at opposite corners of the bottom plate (1); And\or the cargo package loading positioning guide pins (3) are provided with at least two located at diagonal corners of the bottom plate (1).

6. An auxiliary module for transport, loading and reinforcement of spent fuel packages according to claim 1, Features: The lifting mechanism (2) comprises at least two lifting ears (21) fixed on the base plate (1), and the angle between the connection points of at least two of the lifting ears (21) and the base plate (1) and the line connecting the center of gravity of the base plate (1) is an obtuse angle or greater than 90 degrees and less than 180 degrees.

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