Fastening device

Abstract

The utility model relates to a fastening device which comprises a first fastening piece, a second fastening piece and a connecting piece. The first fastening piece and the second fastening piece are used for being inserted into holes in an anti-radiation wall body so as to fix an object; wherein the connecting piece is connected with the first fastening piece and the second fastening piece in a manner that a gap is formed between the first fastening piece and the second fastening piece; the space at the interval is used for being filled with anti-radiation materials so as to prevent radiation from penetrating through holes in the wall body. Compared with the prior art, the first fastening piece and the second fastening piece penetrate through the holes in the wall body to fix objects on the wall, the first fastening piece and the second fastening piece are connected through the connecting piece, the interval is reserved between the first fastening piece and the second fastening piece, and after concrete is poured, the interval is filled with the concrete, so that the objects on the wall are fixed. Radiation can be absorbed and blocked by the concrete body in the interval in the process that the first fastener transmits towards the second fastener or the opposite direction of the first fastener, and then radiation leakage at the hole of the wall body is reduced.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, and in particular to a fastening device. Background Technology

[0002] Non-destructive testing (NDT) is a technique that detects internal defects in an object without damaging it using physical or chemical methods. Its main purpose is to discover defects such as cracks, holes, and inclusions within materials or components, ensuring their safety and reliability during use.

[0003] The principle of flaw detection technology is mainly based on physical phenomena, such as the propagation characteristics of rays in materials. When these physical phenomena propagate in a material, they will change if they encounter defects, such as reflection, refraction, and scattering. By analyzing these changes, the presence and location of defects can be determined.

[0004] With the development of China's shipbuilding industry, ships are becoming larger and larger, and the plates used in their manufacture are becoming thicker. This necessitates increasingly stringent requirements for non-destructive testing during the welding process. The equivalent of traditional radiographic testing is no longer sufficient to meet these future requirements. As the equivalent of radiographic testing increases, the requirements for radiation shielding also become more stringent, as do the radiation protection performance requirements for testing rooms.

[0005] In related technologies, in order to install fixed objects on the walls of the flaw detection room, such as installing templates on the walls, various embedded fasteners are often required. This requires making holes in the walls, which locally reduce the radiation resistance of the walls and cause radiation leakage.

[0006] Therefore, it is necessary to develop a new type of fastening device to improve some of the problems existing in the related technology. Utility Model Content

[0007] The purpose of this invention is to provide a fastening device that can reduce radiation leakage at the holes when fixing objects through holes made in the wall.

[0008] The objective of this utility model can be achieved through the following technical solutions:

[0009] The fastening device provided by this utility model includes: a first fastener, a second fastener, and a connector; the first fastener and the second fastener are used to insert into holes in a radiation-resistant wall to fix objects; wherein, the connector connects the first fastener and the second fastener with a gap between them; the space at the gap is used to fill radiation-resistant material to block radiation from passing through the holes in the wall.

[0010] Optionally, a gap is left between the end faces of the first fastener and the second fastener, and the connector is respectively connected to the side faces of the first fastener and the second fastener.

[0011] Optionally, the connector is plate-shaped, and the sides of both ends of the first fastener and the second fastener are connected to one side surface of the connector.

[0012] Optionally, the connector has an opening that at least partially covers the path between the ends of the first fastener and the second fastener.

[0013] Optionally, the connector is hollow, and the ends of the first fastener and the second fastener are respectively connected to both sides of the connector.

[0014] Optionally, the surface of the connector is provided with an opening, which connects the internal cavity of the connector to the outside.

[0015] Optionally, the cross-sectional dimension of the internal cavity is larger than the cross-sectional dimension of the first fastener or the second fastener.

[0016] Optionally, the first fastener and the second fastener penetrate the wall from both sides.

[0017] Optionally, the first fastener or the second fastener is provided with a water-stopping iron plate.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. This utility model uses a first fastener and a second fastener to pass through holes in the wall to fix objects on the wall. The first fastener and the second fastener are connected by a connector and a gap is left between the first fastener and the second fastener. After the concrete is poured, the concrete fills the gap. During the process of radiation propagating from the first fastener to the second fastener or in the opposite direction, it can be absorbed and blocked by the concrete in the gap, thereby reducing radiation leakage at the hole in the wall.

[0020] 2. This utility model uses a plate-shaped connector to connect the side of the first fastener and the side of the second fastener at the same time. By connecting the sides, a gap is left between the first fastener and the second fastener, so that the concrete can fill the gap between them when pouring.

[0021] 3. This utility model provides an opening on the plate-shaped connector, so that after pouring, a concrete body that penetrates the connector can be formed, thereby blocking radiation from propagating through the connector and helping to reduce radiation leakage.

[0022] 4. This utility model designs the connector as a hollow structure, and makes the cross-sectional size of the cavity inside the connector larger than the cross-sectional size of the first fastener or the second fastener. During pouring, concrete enters the internal cavity through the opening on the surface of the connector, thereby forming a concrete block with a cross-sectional size larger than that of the fasteners on both sides in the cavity between the first fastener and the second fastener. This effectively reduces radiation propagation and leakage while maintaining sufficient strength performance of the fastening device. Attached Figure Description

[0023] Figure 1 This is a cross-sectional schematic diagram showing how tie rods are used to fix the wall template of the X-ray inspection room in related technologies.

[0024] Figure 2 This is a top view of the fastening device in the first embodiment of the present invention;

[0025] Figure 3 for Figure 2 The diagram shows a cross-sectional view of the fastening device used to fix the wall template of the X-ray inspection room.

[0026] Figure 4 This is a schematic diagram of the fastening device in the second type of embodiment of this utility model;

[0027] Figure 5 This is a schematic diagram of the fastening device in the third embodiment of this utility model.

[0028] Figure label:

[0029] 1. First fastener; 2. Second fastener; 3. Connector; 301. Opening; 4. Wall; 5. Template; 6. Waterstop iron plate. Detailed Implementation

[0030] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. This embodiment is based on the technical solution of the present invention and provides detailed implementation methods and specific operating procedures; however, the scope of protection of the present invention is not limited to the following embodiments.

[0031] Figure 1 This is a cross-sectional schematic diagram of the use of tie rods to fix the wall template 5 of the X-ray flaw detection room in related technologies.

[0032] In related technologies, refer to Figure 1 When tie rods are used to fix the wall template 5 of the X-ray inspection room, radiation can propagate through holes or through tie rods as a medium, i.e., it can propagate from one side of the wall to the other in the direction of the arrow in the figure, causing radiation leakage.

[0033] Figure 2This is a top view of the fastening device in the first embodiment of this utility model.

[0034] Figure 3 for Figure 2 The diagram shows a cross-sectional view of the fastening device used to fix the wall template of the X-ray inspection room.

[0035] This utility model provides a fastening device, as shown in the following embodiment. Figure 2 and Figure 3 The fastening device includes: a first fastener 1, a second fastener 2, and a connector 3; the first fastener 1 and the second fastener 2 are used to insert into holes in the radiation-resistant wall to fix objects; wherein, the connector 3 connects the first fastener 1 and the second fastener 2 with a gap between them; the space at the gap is used to fill radiation-resistant material to block radiation from passing through the holes in the wall.

[0036] In some specific embodiments, the wall can be the wall of a radiographic testing room, with a radiation source for testing installed on one side of the wall.

[0037] In some specific embodiments, the fastening device is applicable to the installation and construction of formwork 5 for large-volume concrete walls.

[0038] In some specific embodiments, the object may be a template 5 for a concrete wall 4, but the present invention is not limited thereto.

[0039] In some specific embodiments, reference is made to Figure 2 and Figure 3 The connector 3 is embedded in the concrete wall 4 during pouring. The first fastener 1 passes through the wall 4 and the template 5 on one side of the wall 4 from one direction, and the second fastener 2 passes through the wall 4 and the template 5 on the other side of the wall 4 from the opposite direction.

[0040] In some specific embodiments, the first fastener 1 and the second fastener 2 may be screws, but the present invention is not limited thereto.

[0041] In some specific embodiments, the fastening device further includes nuts that cooperate with the first fastener 1 and the second fastener 2, and the template 5 is fixed by applying a preload to the nuts on both sides.

[0042] In some specific embodiments, the radiation-resistant material filling the space between the first fastener 1 and the second fastener 2 can be lead, barium sulfate or other materials, or the space can be filled with concrete as the radiation-resistant material when the concrete wall 4 is poured.

[0043] In some specific embodiments, blocking radiation from passing through holes in the wall 4 includes blocking radiation from propagating through the gap between the first fastener 1 or the second fastener 2 and the inner wall of the hole.

[0044] In some specific embodiments, blocking radiation from passing through holes in the wall 4 includes blocking radiation from propagating via the first fastener 1 or the second fastener 2 as a propagation medium.

[0045] In some embodiments of this utility model, reference is made to... Figure 3 A gap is left between the end faces of the first fastener 1 and the second fastener 2, and the connector 3 is connected to the side faces of the first fastener 1 and the second fastener 2 respectively.

[0046] In some specific embodiments, reference is made to Figure 3 The space at the interval is located between the end faces of the first fastener 1 and the second fastener 2.

[0047] Figure 4 This is a schematic diagram of the fastening device in the second type of embodiment of this utility model.

[0048] In some specific embodiments, reference is made to Figure 4 The shape of the connector 3 can be an arc shape, a zigzag shape, or a rod or column shape. The two ends of the connector 3 are respectively connected to the sides of the first fastener 1 and the second fastener 2. This utility model does not limit the shape of the connector 3.

[0049] In some specific embodiments, a gap is left between the end faces of the first fastener 1 and the second fastener 2 at their adjacent ends to form the space at the gap, and the connector 3 can connect the sides of the first fastener 1 and the second fastener 2 or their non-adjacent ends respectively.

[0050] In some embodiments of this utility model, reference is made to... Figure 2 and Figure 3 The connector 3 is plate-shaped, and the sides of both ends of the first fastener 1 and the second fastener 2 are connected to one side surface of the connector 3.

[0051] In some specific embodiments, the first fastener 1 and the second fastener 2 are cylindrical, and the cylindrical side surfaces at the ends of the first fastener 1 and the second fastener 2 are welded to the surface of the plate-shaped connector 3.

[0052] In some embodiments of this utility model, reference is made to... Figure 2 and Figure 3The connector 3 is provided with an opening 301, which at least partially covers the path between the ends of the first fastener 1 and the second fastener 2.

[0053] In some specific embodiments, reference is made to Figure 2 and Figure 3 The opening 301 is located between the end faces of the first fastener 1 and the second fastener 2.

[0054] In some specific embodiments, the opening 301 can be circular, rectangular or other polygonal, and the present invention does not limit it in this respect.

[0055] In some specific embodiments, reference is made to Figure 2 The opening 301 is rectangular, and the length of the opening 301 in the direction perpendicular to the first fastener 1 to the second fastener 2 is greater than the diameter of the first fastener 1 and the second fastener 2.

[0056] In some specific embodiments, reference is made to Figure 2 The opening 301 is located in the central region of the connector 3.

[0057] Figure 5 This is a schematic diagram of the fastening device in the third embodiment of this utility model.

[0058] In some embodiments of this utility model, reference is made to... Figure 5 The connector 3 is hollow, and the ends of the first fastener 1 and the second fastener 2 are respectively connected to the two sides of the connector 3.

[0059] In some specific embodiments, the connector 3 can be a hollow cuboid, cylinder, or sphere, etc., and this utility model does not limit this.

[0060] In some specific embodiments, the connector 3 is filled with the radiation-resistant material. For example, the connector 3 can be filled with concrete to form a concrete body that conforms to the shape of the cavity, thereby blocking radiation from propagating between the first fastener 1 and the second fastener 2.

[0061] In some specific embodiments, the ends of the first fastener 1 and the second fastener 2 are welded to the outer surface of the connector 3.

[0062] In some specific embodiments, the ends of the first fastener 1 and the second fastener 2 are inserted into the hollow connector 3, and the sides of the first fastener 1 and the second fastener 2 are welded to the connector 3.

[0063] In some embodiments of this utility model, reference is made to... Figure 5 The surface of the connector 3 is provided with an opening 301, which connects the internal cavity of the connector 3 to the outside.

[0064] In some specific embodiments, reference is made to Figure 5 The opening 301 is provided on the surface of the connector 3, specifically the upper surface, and concrete enters the cavity inside the connector 3 through the opening 301 during pouring.

[0065] In some embodiments of this utility model, reference is made to... Figure 5 The cross-sectional dimension of the internal cavity is larger than the cross-sectional dimension of the first fastener 1 or the second fastener 2.

[0066] In some specific embodiments, reference is made to Figure 5 The internal cavity of the connector 3 is cylindrical, and the diameter of the internal cavity is larger than the diameter of the first fastener 1 or the second fastener 2.

[0067] In some specific embodiments, the internal cavity of the connector 3 is in the shape of a cuboid, and the length and width of the cross-section of the internal cavity are greater than the diameter of the first fastener 1 or the second fastener 2.

[0068] In some specific embodiments, reference is made to Figure 5 The outer contour shape of the connector 3 is similar to the shape of the internal cavity. The outer contour surface dimension of the connector 3 is larger than the dimension of the first fastener 1 or the second fastener 2, forming a stepped structure, so that the cross-sectional dimension of the internal cavity is larger than the cross-sectional dimension of the first fastener 1 or the second fastener 2.

[0069] In some specific embodiments, the first fastener 1 and the second fastener 2 penetrate the wall 4 from both sides.

[0070] In some specific embodiments, reference is made to Figure 2 The first fastener 1 or the second fastener 2 is provided with a water-stopping iron sheet 6.

[0071] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A fastening device, characterized in that, include: First fastener (1), second fastener (2) and connector (3); The first fastener (1) and the second fastener (2) are used to insert into holes in the radiation-resistant wall to fix the object; The connector (3) connects the first fastener (1) and the second fastener (2) with a gap between them; the space between the gaps is used to fill radiation-resistant material to block radiation from passing through the holes in the wall.

2. The fastening device according to claim 1, characterized in that, A gap is left between the end faces of the first fastener (1) and the second fastener (2), and the connector (3) is connected to the side faces of the first fastener (1) and the second fastener (2) respectively.

3. The fastening device according to claim 1, characterized in that, The connector (3) is plate-shaped, and the sides of the first fastener (1) and the second fastener (2) are connected to one side surface of the connector (3).

4. The fastening device according to claim 3, characterized in that, The connector (3) has an opening (301) that at least partially covers the path between the ends of the first fastener (1) and the second fastener (2).

5. The fastening device according to claim 1, characterized in that, The connector (3) is hollow, and the ends of the first fastener (1) and the second fastener (2) are respectively connected to the two sides of the connector (3).

6. The fastening device according to claim 5, characterized in that, The surface of the connector (3) is provided with an opening (301), which connects the internal cavity of the connector (3) to the outside.

7. The fastening device according to claim 6, characterized in that, The cross-sectional dimension of the internal cavity is larger than the cross-sectional dimension of the first fastener (1) or the second fastener (2).

8. The fastening device according to claim 1, characterized in that, The first fastener (1) and the second fastener (2) penetrate the wall from both sides respectively.

9. The fastening device according to claim 1, characterized in that, The first fastener (1) or the second fastener (2) is provided with a water-stopping iron plate (6).

10. The fastening device according to claim 1, characterized in that, The radiation-resistant material is concrete.

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