Fastening device

Abstract

The invention relates to a fastening device. The fastening device 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 body, 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] The present invention relates to the technical field of building construction, and in particular to a fastening device. Background Art

[0002] Flaw detection technology, also known as nondestructive testing (NDT), is a technique that uses physical or chemical methods to detect internal defects in materials or components without destroying them. The primary purpose of this technology is to detect defects such as cracks, holes, and inclusions within materials or components to ensure their safety and reliability during use.

[0003] The principles of flaw detection technology are primarily based on physical phenomena, such as the propagation characteristics of radiation through materials. When these physical phenomena propagate through a material and encounter a defect, they undergo changes such as reflection, refraction, and scattering. By analyzing these changes, the presence and location of the defect can be determined.

[0004] With the development of the domestic shipbuilding industry, ship tonnage is increasing, and the plates used in manufacturing are becoming thicker and thicker. The requirements for non-destructive testing during welding are also becoming increasingly stringent. Traditional radiographic testing can no longer meet future testing requirements. As the radiographic testing capacity increases, the requirements for radiation shielding are becoming increasingly stringent, and the requirements for radiation protection performance in testing rooms are also becoming increasingly stringent.

[0005] In related technologies, in order to install fixed objects on the walls of the NDT room, such as installing templates on the wall, various embedded fasteners are often required, which requires opening holes in the wall. These holes partially reduce the wall's radiation resistance and cause radiation leakage.

[0006] Therefore, it is necessary to develop a new type of fastening device to improve some of the above problems existing in the relevant technology. Summary of the Invention

[0007] The object of the present invention is to provide a fastening device that can reduce radiation leakage at a hole opened in a wall for fixing an object.

[0008] The purpose of the present invention can be achieved by the following technical solutions:

[0009] The fastening device provided by the present invention includes: a first fastener, a second fastener and a connecting member; the first fastener and the second fastener are used to be inserted into holes in a radiation-resistant wall to fix objects; wherein the connecting member connects the first fastener and the second fastener in a manner such that a gap is provided between the first fastener and the second fastener; the space in the gap is used to be filled with radiation-resistant material to block radiation from passing through the hole in the wall.

[0010] Optionally, a distance is left between the end faces of the first fastener and the second fastener, and the connecting member connects the side faces of the first fastener and the second fastener respectively.

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

[0012] Optionally, the connecting member is provided with an opening, and the opening at least partially covers the path between the ends of the first fastener and the second fastener.

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

[0014] Optionally, an opening is provided on the surface of the connecting member, and the opening enables the internal cavity of the connecting member to communicate with the outside.

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

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

[0017] Optionally, a water-stop iron sheet is provided on the first fastener or the second fastener.

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

[0019] 1. The present invention uses a first fastener and a second fastener to pass through a hole in the wall to secure an object 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 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 from the wall hole.

[0020] 2. The present invention uses a plate-shaped connector to simultaneously connect the side surface of the first fastener and the side surface of the second fastener. The side connection leaves a gap between the first fastener and the second fastener, so that concrete can fill the gap between the two during pouring.

[0021] 3. The present invention provides openings on the plate-shaped connectors so that a concrete body penetrating the connectors can be formed after pouring, thereby preventing radiation from propagating through the connectors and helping to reduce radiation leakage.

[0022] 4. The present invention designs the connector into 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, and then forms a concrete block with a cross-sectional size larger than the size of the fasteners on both sides in the cavity between the first fastener and the second fastener. While maintaining sufficient strength performance of the fastening device, it effectively reduces radiation propagation and leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A cross-sectional diagram of the use of tension screws to fix the wall formwork of a radiographic inspection room in the related art;

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

[0025] Figure 3 for Figure 2 A cross-sectional diagram of a fastening device shown fixing the wall template of a radiographic inspection room;

[0026] Figure 4 This is a schematic structural diagram of a fastening device in a second embodiment of the present invention;

[0027] Figure 5 Schematic diagram of the structure of the fastening device in the third embodiment of the present invention.

[0028] Reference numerals:

[0029] 1. First fastener; 2. Second fastener; 3. Connector; 301. Opening; 4. Wall; 5. Formwork; 6. Waterstop iron sheet. DETAILED DESCRIPTION

[0030] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0031] Figure 1 It is a cross-sectional schematic diagram of the use of tension screws to fix the wall template 5 of the radiographic inspection room in the related art.

[0032] In the related art, refer to Figure 1 When the tension screws are used to fix the wall template 5 of the radiographic inspection room, the radiation propagates through the holes, or propagates with the tension screws as the medium, that is, propagates from one side of the wall to the other side along the direction of the arrow in the figure, causing radiation leakage.

[0033] Figure 2 Schematic diagram of the top view of the fastening device in the first embodiment of the present invention.

[0034] Figure 3 for Figure 2 The cross-sectional diagram of the fastening device shown is used to fix the wall formwork of the radiographic inspection room.

[0035] The embodiment of the present invention provides a fastening device, referring to Figure 2 and Figure 3 The fastening device includes: a first fastener 1, a second fastener 2 and a connecting member 3; the first fastener 1 and the second fastener 2 are used to be inserted into holes on the radiation-resistant wall to fix objects; wherein, the connecting member 3 connects the first fastener 1 and the second fastener 2 in a manner such that a gap is provided between the first fastener 1 and the second fastener 2; the space at the gap is used to fill with anti-radiation material to block radiation from passing through the hole in the wall.

[0036] In some specific embodiments, the wall may be a wall of a radiographic inspection room, and a radiation source for inspection is provided on one side of the wall.

[0037] In some specific embodiments, the fastening device is suitable for use in the field of installing formwork 5 for large-volume concrete walls.

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

[0039] In some specific embodiments, referring to Figure 2 and Figure 3 The connecting member 3 is embedded in the concrete wall 4 during pouring, the first fastener 1 passes through the wall 4 and the formwork 5 on one side of the wall 4 from one direction, and the second fastener 2 passes through the wall 4 and the formwork 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 pre-tightening force to the nuts on both sides.

[0042] In some specific embodiments, the anti-radiation material filled in the spacing between the first fastener 1 and the second fastener 2 can be lead, barium sulfate or other materials, or the spacing can be filled with concrete as the anti-radiation material when pouring the concrete wall 4.

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

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

[0045] In some embodiments of the present invention, referring to Figure 3 A distance is left between the end faces of the first fastener 1 and the second fastener 2, and the connecting member 3 connects the side faces of the first fastener 1 and the second fastener 2 respectively.

[0046] In some specific embodiments, referring 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 Schematic diagram of the structure of the fastening device in the second embodiment of the present invention.

[0048] In some specific embodiments, referring to Figure 4 The shape of the connecting member 3 can be a rod-shaped or columnar part in an arc shape, a broken line shape or other shapes. The two ends of the connecting member 3 are respectively connected to the side surfaces of the first fastener 1 and the second fastener 2. The present invention does not limit the shape of the connecting member 3.

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

[0050] In some embodiments of the present invention, referring to Figure 2 and Figure 3 The connecting member 3 is in a plate shape, and the side surfaces of both ends of the first fastener 1 and the second fastener 2 are connected to one side surface of the connecting member 3.

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

[0052] In some embodiments of the present invention, referring to Figure 2 and Figure 3 The connecting member 3 is provided with an opening 301 , and the opening 301 at least partially covers the path between the ends of the first fastener 1 and the second fastener 2 .

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

[0054] In some specific embodiments, the opening 301 may be circular, rectangular, or other polygonal in shape, which is not limited in the present invention.

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

[0056] In some specific embodiments, referring to Figure 2 , the opening 301 is located in the central area of ​​the connecting member 3 .

[0057] Figure 5 Schematic diagram of the structure of the fastening device in the third embodiment of the present invention.

[0058] In some embodiments of the present invention, referring to Figure 5 The connecting member 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 connecting member 3.

[0059] In some specific embodiments, the connecting member 3 may be in the shape of a hollow cuboid, a cylinder, a sphere, etc., and the present invention is not limited thereto.

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

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

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

[0063] In some embodiments of the present invention, referring to Figure 5 The surface of the connecting member 3 is provided with an opening 301, and the opening 301 connects the internal cavity of the connecting member 3 with the outside.

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

[0065] In some embodiments of the present invention, referring to Figure 5 The cross-sectional size of the internal cavity is larger than the cross-sectional size of the first fastener 1 or the second fastener 2.

[0066] In some specific embodiments, referring to Figure 5 The shape of the internal cavity of the connecting member 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 connecting member 3 is in the shape of a cuboid, and the cross-sectional length and width of the internal cavity are greater than the diameter of the first fastener 1 or the second fastener 2 .

[0068] In some specific embodiments, referring to Figure 5 The outer contour shape of the connecting member 3 is similar to the shape of the internal cavity, and the outer contour surface size of the connecting member 3 is larger than the size of the first fastener 1 or the second fastener 2, forming a stepped structure so that the cross-sectional size of the internal cavity is larger than the cross-sectional size 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 two sides respectively.

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

[0071] The above describes in detail the preferred embodiments of the present invention. It should be understood that those skilled in the art can make numerous modifications and variations based on the concepts of the present invention without inventive effort. Therefore, any technical solutions that can be derived by those skilled in the art through logical analysis, reasoning, or limited experimentation based on the concepts of the present invention and the prior art should be within the scope of protection defined by the claims.

Claims

1. A fastening device, characterized in that: include: A first fastener (1), a second fastener (2) and a connecting member (3); The first fastener (1) and the second fastener (2) are used to be inserted into holes on the radiation-resistant wall to fix objects; The connecting member (3) connects the first fastener (1) and the second fastener (2) in such a way that a gap is provided between the first fastener (1) and the second fastener (2); the space at the gap is used to fill with radiation-resistant material to block radiation from passing through the hole in the wall.

2. The fastening device according to claim 1, characterized in that: A distance is left between the end faces of the first fastener (1) and the second fastener (2), and the connecting member (3) respectively connects the side faces of the first fastener (1) and the second fastener (2).

3. The fastening device according to claim 1, characterized in that: The connecting member (3) is in the shape of a plate, and the side surfaces of both ends of the first fastening member (1) and the second fastening member (2) are connected to one side surface of the connecting member (3).

4. The fastening device according to claim 3, characterized in that: The connecting member (3) is provided with an opening (301), and the opening (301) 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 connecting piece (3) is hollow, and the ends of the first fastener (1) and the second fastener (2) are respectively connected to two sides of the connecting piece (3).

6. The fastening device according to claim 5, characterized in that: The surface of the connecting piece (3) is provided with an opening (301), and the opening (301) enables the internal cavity of the connecting piece (3) to communicate with the outside.

7. The fastening device according to claim 6, characterized in that: The cross-sectional size of the internal cavity is greater than the cross-sectional size 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 two 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-stop iron sheet (6).

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

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