A radio shielded steel box without corners

Abstract

The utility model relates to the technical field of radioactive material protection provides a no corner piece's radioactivity shield steel box, including box and lid, the box includes first box board, second box board and bottom plate, be equipped with box board boss, first welding surface, second welding surface and first recess on the first box board, first welding surface, second welding surface set up in the both sides of box board boss, first welding surface, second welding surface are used for with second box board welding, first recess sets up in the bottom of box board boss, the end of bottom plate places in first recess and welds with it, second box board is equipped with second recess, the side end of bottom plate places in second recess and welds with it, the inside of lid is equipped with lid boss, and the clearance fit of lid boss and box inner wall is matched. In the utility model no corner piece needs to be equipped with, can improve the use volume of steel box, reduce the steel box appearance size while shielding radioactive waste, thereby reduce the storage space of radioactive waste.

Description

Technical Field

[0001] This utility model relates to the technical field of radioactive material protection, and in particular to a radioactive shielding steel box without corner fittings. Background Technology

[0002] In the transportation of low- and intermediate-level radioactive waste, the structural design and dimensions of the steel containers used for transport are generally in accordance with the EJ1076-2014 standard. According to this standard, the steel containers commonly adopt a container corner fitting structure to meet relevant transportation and structural requirements.

[0003] However, for steel boxes used to shield radioactive waste, the shielding layer needs to have sufficient thickness in all directions to achieve effective shielding. Existing steel boxes based on the EJ1076-2014 standard, such as... Figure 1 As shown, due to the use of container corner fittings, the hollow nature of the corner fittings results in insufficient shielding thickness at the eight vertices of the rectangular steel box structure. To compensate for this defect, shielding plates need to be added below the corner fittings, which directly reduces the usable volume of the steel box.

[0004] Meanwhile, a reliable seal must be achieved between the shielded steel box body and the box cover. However, since the top surface of the container corner fittings cannot be directly used as a sealing joint surface, a corresponding sealing joint structure must be specially made on the inside of the corner fittings. This further compresses the internal volume of the steel box. Moreover, this design will also cause the box body to form a structural feature of "small opening and large internal cavity", which significantly affects the actual use efficiency of the steel box.

[0005] The aforementioned problems not only reduce the space utilization rate of the steel box, but also reduce the storage space for radioactive waste due to the failure to optimize the external dimensions of the steel box. Therefore, there is an urgent need to design a radioactive shielding steel box without corner fittings. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model provides a radiation shielding steel box without corner fittings, including a box body and a box cover. The box body includes a first box plate, a second box plate, and a bottom plate. The first box plate is provided with a box plate boss, a first welding surface, a second welding surface, and a first groove. The first welding surface and the second welding surface are located on both sides of the box plate boss and are used for welding with the second box plate. The first groove is located at the bottom of the box plate boss, and the end of the bottom plate is placed in the first groove and welded thereto. The second box plate is provided with a second groove, and the side end of the bottom plate is placed in the second groove and welded thereto.

[0007] The inside of the box cover is provided with a box cover protrusion, which is fitted with the inner wall of the box with a clearance.

[0008] Furthermore, the end edge of the protrusion on the lid is provided with a second chamfer, which serves as a guide when the lid is installed into the box.

[0009] Furthermore, the second box plate is also provided with fork slots.

[0010] Furthermore, a fork slot side plate is welded to the fork slot opening, and the fork slot side plate is also welded to the base plate.

[0011] Furthermore, the upper edge of the fork slot is flush with the lower plane of the base plate.

[0012] Furthermore, the first box plate is provided with a fourth groove, and the second box plate is provided with a fifth groove. The fourth groove and the fifth groove form a complete sealing groove, and a sealing ring is provided in the sealing groove.

[0013] Furthermore, the four corners of the box cover are provided with screw holes, and the screw holes are provided with detachable eye bolts.

[0014] Furthermore, the screw hole is a blind hole.

[0015] Furthermore, the steel box also includes a disassembly assembly configured to quickly disassemble and assemble the box body and the box cover.

[0016] This utility model has the following beneficial effects:

[0017] (1) In this utility model, there is no need to provide corner pieces. While shielding radioactive waste, the usable volume of the steel box can be increased and the external size of the steel box can be reduced, thereby reducing the storage space for radioactive waste.

[0018] (2) In this utility model, the first box plate is provided with a first groove, and the second box plate is provided with a second groove. The bottom plate is placed in the first groove and the second groove and welded to them. On the one hand, it can avoid affecting the through weld of the shielding. On the other hand, it reduces the amount of welding construction for the connection between the bottom plate and the first box plate and the second box plate, and reduces welding deformation. The first groove and the second groove also play a positioning role. There is no need to prepare additional welding positioning fixtures, which is beneficial to the production of steel boxes.

[0019] (3) The lid of this utility model is provided with a lid protrusion. The lid protrusion and the inner wall of the box are in clearance fit. The lid protrusion is installed into the inner wall of the box, which can quickly align the lid with the box. In addition, the lid protrusion is provided with a second chamfer for guiding the lid into the box, which can make the lid be installed into the box more quickly and smoothly.

[0020] (4) In this utility model, the second box plate is provided with a fork groove, and a fork groove side plate is welded at the fork groove. The fork groove side plate runs through the width of the box body, so that the lifting position of the fork rod is restricted within the fork groove, thus stabilizing the lifting.

[0021] (5) In this utility model, the weld between the first box plate and the second box plate adopts a full penetration structure in the lower area to ensure the connection strength, and a smaller auxiliary weld is adopted in the upper area. The connection between the bottom plate and the first box plate and the second box plate adopts a smaller fillet weld, which can efficiently and effectively manufacture steel boxes. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of a box with corner fittings in the existing technology.

[0023] Figure 2 This is a schematic diagram of the box body in this utility model.

[0024] Figure 3 This is a schematic diagram of the inner side of the first box panel in this utility model.

[0025] Figure 4 This is a schematic diagram of the inner side of the second box panel in this utility model.

[0026] Figure 5 This is a schematic diagram of the bottom of the steel box in this utility model.

[0027] Figure 6 This is a schematic diagram of the interior of the box cover in this utility model.

[0028] Figure 7 This is a schematic diagram of the overall structure of this utility model.

[0029] Figure 8 This is a schematic diagram of the disassembly and assembly components in this utility model.

[0030] Figure 9 This is a schematic diagram of the rotating lifting ring in this utility model. Detailed Implementation

[0031] The technical solution of this utility model will be further described in detail below with reference to specific embodiments. However, this embodiment is not intended to limit this utility model. Any similar structure or similar variation of this utility model should be included in the protection scope of this utility model. The commas in this utility model all indicate the relationship between and. The English letters in this utility model are case-sensitive.

[0032] like Figure 2-4As shown, this utility model provides a radiation shielding steel box without corner fittings, including a box body 1 and a box cover 2. The box body 1 includes a first box plate 11, a second box plate 12, and a bottom plate 13. The first box plate 11 is provided with a box plate boss 111, a first welding surface 112, a second welding surface 113, and a first groove 114. The first welding surface 112 and the second welding surface 113 are located on both sides of the box plate boss 111 and are used for welding to the second box plate 12. The first groove 114 is located at the bottom of the box plate boss 111, and the end of the bottom plate is placed in the first groove. The bottom plate is welded to the bottom plate, and while avoiding the through weld that would affect the shielding, the second box plate 12 is provided with a second groove 121. The side end of the bottom plate is placed in the second groove and welded to it. The first groove and the second groove also serve to support the load of the bottom plate and the workpiece inside the box. On the one hand, this avoids the through weld that would affect the shielding, and on the other hand, it reduces the amount of welding work required to connect the bottom plate with the first box plate and the second box plate, and reduces welding deformation. The first groove and the second groove also serve a positioning function, eliminating the need for additional welding positioning fixtures, which is beneficial for the production of the steel box. The first box plate 11, the second box plate 12 and the bottom plate 13 are all shielding plates.

[0033] like Figure 5 As shown, the second box plate 12 is also provided with a fork slot 122. The upper edge of the fork slot 122 is flush with the lower plane of the bottom plate 13. The first box plate 11 is provided with a fourth groove 110, and the second box plate 12 is provided with a fifth groove 120. The fourth groove 110 and the fifth groove 120 form a complete sealing groove. A sealing ring is provided in the sealing groove. The box body 1 is pressed by the pressing surface 212 of the box cover 2, so that the sealing ring 101 is evenly pressed. This allows for the use of fewer disassembly and assembly components 3 to press the box cover 2, further shortening the operation time. The fork slot side plate runs across the width of the box body, restricting the lifting position of the fork to within the fork slot, thus stabilizing the lifting.

[0034] like Figure 6 As shown, the interior of the lid 2 is provided with a lid protrusion 21, which fits with the inner wall of the box body with a clearance. The lid protrusion 21 allows the lid 2 to be installed into the box body 1 quickly and smoothly. A second chamfer 211 is provided at the end edge of the lid protrusion 21 as a guide when the lid 2 is installed into the box body 1. Preferably, the lid protrusion 21 has a pressing surface 212 around its perimeter. Screw holes are provided at the four corners of the lid 2, and removable eye bolts 20 are installed in these screw holes. These screw holes are blind holes to ensure a tight seal.

[0035] The weld between the first box plate 11 and the second box plate 12 has a full penetration structure in the lower part to ensure connection strength, and a fillet weld in the upper part with a weld height of 8-10mm. The bottom plate is placed in the first groove and the second groove, and the bottom plate is in contact with the inner wall of the first groove and the second groove. A full-length fillet weld is made along the corner joint between the edge of the bottom plate and the side wall of the groove with a weld height of 8-10mm.

[0036] This invention eliminates the need for corner fittings, thereby increasing the usable volume of the steel box and reducing its external dimensions while shielding radioactive waste, thus reducing the storage space required for radioactive waste.

[0037] like Figure 7-8 As shown, the steel box also includes a disassembly assembly, which is configured to quickly disassemble and assemble the box body and the box cover. The disassembly assembly 3 includes a first bolt seat 31, a second bolt seat 32, a bolt 33, a first nut 34, a second nut 35, a bolt shaft 36, a washer 37, and a spring washer 38. The first bolt seat 31 is welded to the side of the box cover 2, and the second bolt seat 32 is welded to the side of the box body 1. The first bolt seat 31 has a first opening 311, which is U-shaped. The bottom of the opening of the first opening 311 has a first chamfer 312, which can reduce the radius of the bolt 33 when it rotates. The first nut 34 needs to be loosened by a small amount to rotate and disengage from the box cover 2. When the bolt 33 returns to its original position, the first nut 34 can be tightened by a small amount to press the box cover 2, thereby achieving quick assembly and disassembly. The bolt 33 is mounted in the second bolt seat 32 via the bolt shaft 36. The bolt 33 is configured to rotate about the bolt shaft 36 toward the first opening 311 of the first bolt seat 31. The bolt 33 and the first nut 34 are threaded together. The spring washer 38 and the washer 37 are disposed between the bolt 33 and the first nut 34.

[0038] The bolt 33 has an external thread, and the first thread near the end of the bolt has a notch. By breaking the first thread at the end of the bolt, the first nut 34 is prevented from coming out, so that the bolt 33, the first nut 34, the spring washer 38 and the washer 37 become one.

[0039] The second bolt seat 32 is provided with a second opening 321, which is U-shaped. The two ends of the U-shape of the second opening 321 are provided with first connecting holes. The bolt shaft 36 is placed in the first connecting hole. One end of the bolt 33 is provided with a second connecting hole. The bolt shaft 36 is placed in the first connecting hole and the second connecting hole. The two ends of the bolt shaft 36 are fixed by a second nut 35. The other end of the bolt 33 is provided with an external thread for connecting with the first nut 34.

[0040] The preferred bolt 33 has a gap between it and the first bolt seat 31 and the second bolt seat 32, which can cover the alignment error between the cover boss and the inner wall of the box. The bolt 33 can also enter the first bolt seat 31 to complete the clamping function.

[0041] like Figure 9 As shown, a rotating lifting ring 10 is provided on the side of the box body 1 for hoisting the entire steel box. The rotating lifting ring 10 includes a first lifting ring 101 and a first lifting ring seat 102. The first lifting ring seat 102 has a mating hole 103 for accommodating the lifting ring. The outer circumference of the first lifting ring 101 and the inner circumference of the mating hole 103 form a clearance fit (i.e., the outer diameter of the first lifting ring is slightly smaller than the inner diameter of the mating hole), providing room for the rotation of the first lifting ring 101. With the clearance fit between the first lifting ring 101 and the first lifting ring seat 102, the first lifting ring 101 can rotate within the mating hole 102. After the steel box is hoisted onto the transport vehicle, one end of the strap can be fixed to the transport vehicle, and the hook at the other end of the strap can be connected to the lifting ring. Then the strap is tightened, thereby fixing the box body to the transport vehicle. The rotating lifting ring 10 is located at the welding point of the first box plate 11 and the second box plate 12.

[0042] The bottom corner of the box 1 is provided with a bottom pad 111, which is welded to the first box plate 11 and the second box plate 12.

[0043] In use, after loosening the first nut 34 on all bolts 33, rotate the bolts 33 toward the second opening 321. At this time, the box body 1 and the box cover 2 are in a non-fixed state. Use the second lifting ring 20 to lift the box cover 2 away, load the waste into the box body 1, and then lift the box cover 2 back. After the box cover protrusion enters the box body, due to the gap between the protrusion and the inner wall of the box, there is a deviation in two directions between the first bolt seat 31 and the bolt 33. The gap between the second bolt seat and the bolt, and the gap between the first bolt seat 31 and the bolt, can cover the deviation in two directions, so that it can be rotated around the bolt axis and placed into the first opening of the first bolt seat 31. Tighten the first nut to fix the box cover, connect and fix the box body and the box cover 2, and then lift the steel box as a whole away by a crane or forklift.

[0044] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

Claims

1. A radiation-shielding steel box without corner fittings, characterized in that, The device includes a box body and a box lid. The box body includes a first box panel, a second box panel, and a bottom plate. The first box panel has a box panel boss, a first welding surface, a second welding surface, and a first groove. The first welding surface and the second welding surface are located on both sides of the box panel boss and are used for welding to the second box panel. The first groove is located at the bottom of the box panel boss. The end of the bottom plate is placed in the first groove and welded to it. The second box panel has a second groove. The side end of the bottom plate is placed in the second groove and welded to it. The inside of the box cover is provided with a box cover protrusion, which is fitted with the inner wall of the box with a clearance.

2. The radiation shielding steel box without corner fittings according to claim 1, characterized in that, The end edge of the lid protrusion is provided with a second chamfer, which serves as a guide when the lid is installed into the box.

3. A radiation-shielding steel box without corner fittings according to claim 1, characterized in that, The second box plate is also provided with fork slots.

4. A radiation-shielding steel box without corner fittings according to claim 3, characterized in that, A fork slot side plate is welded to the fork slot opening, and the fork slot side plate is also welded to the base plate.

5. A radiation-shielding steel box without corner fittings according to claim 3, characterized in that, The upper edge of the fork slot is flush with the lower plane of the base plate.

6. A radiation-shielding steel box without corner fittings according to claim 1, characterized in that, The first box plate is provided with a fourth groove, and the second box plate is provided with a fifth groove. The fourth groove and the fifth groove form a complete sealing groove, and a sealing ring is provided in the sealing groove.

7. A radiation-shielding steel box without corner fittings according to claim 1, characterized in that, The lid has screw holes at its four corners, and each screw hole contains a removable eye bolt.

8. A radiation-shielding steel box without corner fittings according to claim 7, characterized in that, The screw hole is a blind hole.

9. A radiation-shielding steel box without corner fittings according to claim 1, characterized in that, The steel box also includes a disassembly assembly configured to quickly disassemble and assemble the box body and the box cover.

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