Blind Hole Structure and Its Construction Method

Abstract

The present invention relates to a blind hole structure and its construction method. The blind hole structure includes: an embedded part embedded in a concrete structure; a protective cover covering the top of the embedded part, the protective cover including a cover edge attached to the edge of the top of the embedded part; an air extraction joint connected to the protective cover, and the air inside the protective cover is extracted through the air extraction joint so that the cover edge of the protective cover is tightly attached and fixed to the edge of the top of the embedded part; after the air extraction is completed, a plugging head is inserted and blocked at the air extraction joint. In the present invention, the protective cover is arranged on the top of the embedded part, and the cover edge of the protective cover is attached and fixed to the edge of the top of the embedded part, so as to isolate and protect the embedded part and prevent concrete from falling into the embedded part during the pouring process. By extracting the air inside the protective cover at the air extraction joint, a negative pressure is formed inside the protective cover, and the cover edge is tightly attached to the top edge of the embedded part, preventing air leakage and further strengthening the tight fit between the cover edge of the protective cover and the edge of the top of the embedded part.

Description

Technical Field

[0001] The present invention relates to the field of building construction, and particularly to a blind hole structure and a construction method thereof. Background Art

[0002] Reserved blind holes are commonly seen in the construction process of various large-scale experimental equipment workshops. Generally, a metal structure with internal thread is fixed in the concrete structure to be poured before concrete pouring. During the pouring process, a small amount of concrete often falls into the blind hole, causing the blind hole to be blocked. At the same time, sharp metals or vibrating tools are inevitably used during the cleaning process, which is likely to damage the blind hole structure and affect the installation accuracy of the equipment. A large-scale earthquake simulation research facility consists of a large number of experimental operation equipment, with numerous reserved blind hole structures. The installation accuracy requirements of the experimental operation equipment are high. The blind holes are reserved holes for force transfer members arranged at equal intervals. If concrete enters a certain blind hole and causes damage, it will lead to the failure of the entire group of blind holes and ultimately lose the functionality of the experimental equipment. Summary of the Invention

[0003] The purpose of the present invention is to overcome the defects of the prior art and provide a blind hole structure and a construction method thereof to solve the problems in the prior art.

[0004] The technical solution to achieve the above purpose is as follows:

[0005] The present invention provides a blind hole structure, including:

[0006] An embedded part embedded in the concrete structure;

[0007] A protective cover covering the top of the embedded part, and the protective cover includes a cover edge attached to the edge of the top of the embedded part;

[0008] An air extraction joint connected to the protective cover, and the air inside the protective cover is extracted through the air extraction joint, so that the cover edge of the protective cover is tightly attached and fixed to the edge of the top of the embedded part; and

[0009] After the air extraction is completed, a plugging head is inserted and plugged into the air extraction joint;

[0010] The top of the protective cover protrudes upward to form a convex platform, and the convex platform is provided with an opening;

[0011] The air extraction joint is inserted and fixed to the convex platform through the opening;

[0012] The air extraction joint is a rubber plug;

[0013] The protective cover is made of rubber material, so that the protective cover is recessed and contracted inward after air extraction.

[0014] A further improvement of the blind hole structure of the present invention lies in that

[0015] The air extraction joint is formed with a socket communicating with the inside of the protective cover;

[0016] A suction pipe is inserted into the socket, and the suction pipe is evacuated by a suction pump.

[0017] A further improvement of the blind hole structure of the present invention lies in that the embedded part includes:

[0018] A pipe body embedded in a concrete structure, the pipe body is hollow and vertically through, and an internal thread is formed on the inner wall of the pipe body; and

[0019] A bolt screwed into the pipe body.

[0020] A further improvement of the blind hole structure of the present invention lies in that

[0021] A lower end plate is sealed and fixed at the bottom end of the pipe body;

[0022] An upper end plate is fixed at the top end of the pipe body, and an opening corresponding to and communicating with the pipe body is formed on the upper end plate. After air extraction, the edge of the protective cover is closely attached and fixed to the upper end plate.

[0023] The present invention also provides a construction method for a blind hole structure, including the following construction steps:

[0024] Provide an embedded part and embed the embedded part in a concrete structure;

[0025] Provide a protective cover including an edge, cover the protective cover on the top of the embedded part, and the edge is attached to the edge of the top of the embedded part;

[0026] Provide an air extraction joint, connect the air extraction joint to the protective cover, evacuate the air in the protective cover through the air extraction joint, so that the edge of the protective cover is closely attached and fixed to the edge of the top of the embedded part; and

[0027] Provide a plugging head, and after air extraction is completed, insert and plug the plugging head into the air extraction joint;

[0028] The air extraction joint is a rubber plug;

[0029] The protective cover is made of rubber material, so that the protective cover is recessed and contracted inward after air extraction.

[0030] A further improvement of the construction method of the blind hole structure of the present invention lies in that it further includes:

[0031] Provide a suction pump and a suction pipe connected to the suction pump. The air extraction joint is formed with a socket communicating with the inside of the protective cover. Insert the suction pipe into the socket and evacuate the protective cover through the suction pump.

[0032] A further improvement of the construction method of the blind hole structure of the present invention lies in that the provided embedded part includes:

[0033] Providing a pipe body that is hollow inside and penetrates up and down, with internal threads formed on the inner wall of the pipe body, and embedding the pipe body in the concrete structure;

[0034] Providing a bolt and screwing the bolt into the pipe body;

[0035] Providing a lower end plate and sealing and fixing the lower end plate at the bottom end of the pipe body; and

[0036] Providing an upper end plate and sealing and fixing the upper end plate at the top end of the pipe body. An opening corresponding to and communicating with the pipe body is formed on the upper end plate. After air extraction, the edge of the protective cover is tightly attached and fixed to the upper end plate.

[0037] Advantages of the blind hole structure and its construction method of the present invention:

[0038] The present invention uses a protective cover to cover the top of the embedded part, and the edge of the protective cover is attached and fixed to the edge of the top of the embedded part to isolate and protect the embedded part, preventing concrete from falling into the embedded part during the pouring process. By extracting the air inside the protective cover through the air extraction joint, a negative pressure is formed inside the protective cover, and the edge of the cover is tightly attached to the edge of the top of the embedded part, preventing air leakage and further strengthening the tight fit between the edge of the protective cover and the edge of the top of the embedded part. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figures 1 to 4 It is a schematic diagram of the construction steps of the blind hole structure of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0040] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0041] Refer to Figures 1 to 4 , which shows a schematic diagram of the construction steps of the blind hole structure of the present invention. Combining Figures 1 to 4 as shown, the blind hole structure of the present invention includes:

[0042] An embedded part 10 embedded in the concrete structure;

[0043] A protective cover 20 covering the top of the embedded part 10, and the protective cover 20 includes an edge 21 attached to the edge of the top of the embedded part 10;

[0044] An air extraction joint 30 connected to the protective cover 20. By extracting the air inside the protective cover 20 through the air extraction joint 30, the edge 21 of the protective cover 20 is tightly attached and fixed to the edge of the top of the embedded part 10; and

[0045] After the air extraction is completed, a plug 40 is inserted and sealed at the air extraction joint 30.

[0046] As a preferred embodiment of the blind hole structure of the present invention, the embedded part 10 includes: a pipe body 11 embedded in a concrete structure, the pipe body 11 is hollow inside and penetrates up and down, and an internal thread is formed on the inner wall of the pipe body 11; and a bolt 12 screwed into the pipe body 11.

[0047] As a preferred embodiment of the blind hole structure of the present invention, a lower end plate 13 is sealed and fixed at the bottom end of the pipe body 11; an upper end plate 14 is fixed at the top end of the pipe body 11, and an opening corresponding to and communicating with the pipe body 11 is formed on the upper end plate 14. After air extraction, the edge 21 of the protective cover 20 is closely attached and fixed to the upper end plate 14.

[0048] Specifically, the pipe body 10 is a stainless steel pipe with an internal thread formed on its inner wall. A matching bolt is screwed into the pipe body 10.

[0049] Further, apply strong glue on the bottom surface of the edge 21, and then cover the protective cover 20 on the upper end plate 14 at the top of the embedded part 10 for bonding. Wait for a moment, check whether the bonding is firm, and use a negative pressure gun to test the airtightness. By adhesively fixing the protective cover 20 to the upper end plate 14 at the top of the embedded part 10, the embedded part 10 is isolated and protected structurally.

[0050] As a preferred embodiment of the blind hole structure of the present invention, the air extraction joint 30 is formed with a socket communicating with the inside of the protective cover 20; the socket is arranged vertically for inserting an air extraction pipe 50.

[0051] As a preferred embodiment of the blind hole structure of the present invention, an air extraction pipe 50 is inserted into the socket. The air extraction pipe 50 is evacuated by an air extraction pump 51, so that the space formed by the combination of the protective cover 20 and the blind hole panel, through air negative pressure, when the air becomes negative pressure, the cover body is recessed and contracted inward. Further strengthen the combination of the protective cover and the upper end plate 14.

[0052] As a preferred embodiment of the blind hole structure of the present invention, a boss 22 protrudes upward from the top of the protective cover 20, and an opening is formed in the boss 22; the air extraction joint 30 is inserted and fixed in the boss 22 through the opening. The boss 22 is higher than other parts of the protective cover 20, which is convenient for installing the air extraction pipe and convenient for extracting air.

[0053] Further, the air extraction joint 30 and the inner wall of the boss 22 are clamped and connected. Specifically, convex plates are formed at opposite ends of the bottom of the air extraction joint 30, and slots adapted to the convex plates of the air extraction joint 30 are formed on the inner wall of the boss 22, and the convex plates are inserted into the slots for limit fixation.

[0054] As a preferred embodiment of the blind hole structure of the present invention, the air extraction joint 30 is a rubber plug; the rubber plug has elasticity and can deform. After the air extraction pipe is taken out of the rubber plug, the parts on both sides of the socket of the rubber plug automatically rebound to close the socket, avoiding air leakage.

[0055] As a preferred embodiment of the blind hole structure of the present invention, in combination with Figure 4 As shown, the protective cover 20 is made of rubber. After air extraction, the air pressure inside the protective cover 20 is less than the external air pressure, so that the protective cover 20 is recessed and contracted inward after air extraction.

[0056] After the air extraction is completed, insert the plugging head downward from the boss 22 into the socket of the air extraction joint 30 for plugging to prevent air leakage, so as to ensure the tight fitting connection between the protective cover 20 and the upper end plate.

[0057] The present invention also provides a construction method for the blind hole structure, including the following construction steps:

[0058] Provide the embedded part 10 and embed the embedded part 10 in the concrete structure;

[0059] Provide the protective cover 20 including the cover edge 21, cover the protective cover 20 on the top of the embedded part 10, and the cover edge 21 is attached to the edge of the top of the embedded part 10;

[0060] Provide the air extraction joint 30, connect the air extraction joint 30 to the protective cover 20, and extract the air inside the protective cover 20 through the air extraction joint 30, so that the cover edge 21 of the protective cover 20 is tightly attached and fixed to the edge of the top of the embedded part 10; and

[0061] Provide the plugging head 40, and after the air extraction is completed, insert the plugging head 40 into the air extraction joint 30 for plugging.

[0062] As a preferred embodiment of the construction method of the blind hole structure of the present invention, it further includes: providing an air extraction pump 51 and an air extraction pipe 50 connected to the air extraction pump 51. The air extraction joint 30 is formed with a socket communicating with the inside of the protective cover 20. Insert the air extraction pipe 50 into the socket, and extract the air from the protective cover 20 through the air extraction pump 51.

[0063] As a preferred embodiment of the construction method of the blind hole structure of the present invention, the air extraction joint 30 is a rubber plug; the protective cover 20 is made of rubber, so that the protective cover 20 is recessed and contracted inward after air extraction.

[0064] As a preferred embodiment of the construction method of the blind hole structure of the present invention, providing the embedded part 10 includes: providing a tube body 11 that is hollow inside and penetrates up and down. The inner wall of the tube body 11 is formed with internal threads, and embed the tube body 11 in the concrete structure; provide a bolt 12 and screw the bolt 12 into the tube body 11; provide a lower end plate 13 and seal and fix the lower end plate 13 at the bottom end of the tube body 11; and provide an upper end plate 14 and seal and fix the upper end plate 14 at the top end of the tube body 11. The upper end plate 14 is formed with an opening corresponding to communicate with the tube body 11. After air extraction, the cover edge 21 of the protective cover 20 is tightly attached and fixed to the upper end plate 14.

[0065] The beneficial effects of the blind hole structure and its construction method of the present invention are as follows:

[0066] In the present invention, a protective cover is arranged on the top of the embedded part, and the edge of the protective cover is fixedly attached to the edge of the top of the embedded part to isolate and protect the embedded part, preventing concrete from falling into the embedded part during the pouring process. The air in the protective cover is extracted through the air extraction joint, making the inside of the protective cover in a negative pressure state, and the edge of the cover is closely attached to the edge of the top of the embedded part to prevent air leakage, further strengthening the close fit between the edge of the protective cover and the edge of the top of the embedded part.

[0067] The present invention has been described in detail with reference to the embodiments in the accompanying drawings. Those of ordinary skill in the art can make various variations of the present invention according to the above description. Therefore, certain details in the embodiments should not constitute a limitation to the present invention, and the protection scope of the present invention will be defined by the scope defined in the appended claims.

Claims

1. A blind hole structure, characterized in that, Comprising: An embedded part embedded in a concrete structure; A protective cover covering the top of the embedded part, the protective cover including a cover edge attached to the edge of the top of the embedded part; An air extraction joint connected to the protective cover, and the air inside the protective cover is extracted through the air extraction joint, so that the cover edge of the protective cover is closely attached and fixed to the edge of the top of the embedded part; And After the air extraction is completed, a plugging head is inserted and plugged into the air extraction joint; A boss protrudes upward from the top of the protective cover, and an opening is formed in the boss; The air extraction joint is inserted and fixed to the boss through the opening; The air extraction joint is a rubber plug; The protective cover is made of rubber material, so that the protective cover is recessed and contracted inward after air extraction.

2. The blind hole structure according to claim 1, wherein The air extraction joint is formed with a socket communicating with the inside of the protective cover; A suction pipe is inserted into the socket, and the suction pipe is used for air extraction by an air extraction pump.

3. The blind hole structure according to claim 1, wherein The embedded part includes: A pipe body embedded in a concrete structure, the pipe body is hollow and vertically through, and internal threads are formed on the inner wall of the pipe body; and A bolt screwed into the pipe body.

4. The blind hole structure according to claim 3, wherein A lower end plate is plugged and fixed at the bottom end of the pipe body; An upper end plate is fixed at the top end of the pipe body, and an opening corresponding to and communicating with the pipe body is formed on the upper end plate. After air extraction, the cover edge of the protective cover is closely attached and fixed to the upper end plate.

5. A construction method for a blind hole structure, characterized in that, Including the following construction steps: Providing an embedded part and embedding the embedded part in a concrete structure; Providing a protective cover including a cover edge, covering the protective cover on the top of the embedded part, and attaching the cover edge to the edge of the top of the embedded part; Providing an air extraction joint, connecting the air extraction joint to the protective cover, and extracting the air inside the protective cover through the air extraction joint, so that the cover edge of the protective cover is closely attached and fixed to the edge of the top of the embedded part; and Providing a plugging head, and after the air extraction is completed, inserting and plugging the plugging head into the air extraction joint; The air extraction joint is a rubber plug; The protective cover is made of rubber material, so that the protective cover is recessed and contracted inward after air extraction.

6. The construction method of the blind hole structure according to claim 5, characterized in that, Further including: Providing an air extraction pump and a suction pipe connected to the air extraction pump, the air extraction joint is formed with a socket communicating with the inside of the protective cover, inserting the suction pipe into the socket, and extracting air from the protective cover through the air extraction pump.

7. The construction method of the blind hole structure according to claim 5, characterized in that, Providing the embedded part includes: Providing a pipe body that is hollow and vertically through, and internal threads are formed on the inner wall of the pipe body, and embedding the pipe body in a concrete structure; Providing a bolt and screwing the bolt into the pipe body; Providing a lower end plate and plugging and fixing the lower end plate at the bottom end of the pipe body; and Providing an upper end plate and plugging and fixing the upper end plate at the top end of the pipe body, the upper end plate is formed with an opening corresponding to and communicating with the pipe body, and after air extraction, the cover edge of the protective cover is closely attached and fixed to the upper end plate.

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