Detachable embedded bolt and installation method of detachable embedded bolt

Abstract

The invention discloses a detachable embedded bolt and a detachable embedded bolt mounting method.The detachable embedded bolt comprises a wall body and further comprises an embedded part and a bolt body which are embedded in the wall body; the pre-embedded part is in a barrel shape with threads inside, one end of the pre-embedded part is closed and pre-embedded in a wall body, and the other end of the pre-embedded part is open and arranged on the surface of the wall body; a thin film is arranged at the opening to prevent the interior of the embedded part from being polluted during pouring; the bolt penetrates through the film, enters the embedded part from the opening and is detachably connected with the embedded part through a thread; compared with the prior art, the bolt has the advantages that the bolt is convenient to fix and can be reused after being detached, subsequent treatment is not needed after detachment, and a bolt hole has no leakage risk.

Description

Technical Field

[0001] The present invention relates to the technical field of building installation, and relates to a detachable embedded bolt and a detachable embedded bolt installation method Background Art

[0002] At present, there is a widespread demand for setting fixed points on the surface of structures in the field of building installation. Especially when constructing temporary facilities such as cantilever scaffolding and unloading platforms, a large number of embedded bolts are needed to fix steel wire ropes and realize temporary connection between steel wire ropes and buildings.

[0003] For example, the patent with application number: [CN202020457661.8] discloses an embedded bolt, wherein the embedded bolt (10) comprises: a bolt portion (110) and an embedded portion (120) connected to the bolt portion (110), wherein the bolt portion (110) is cylindrical in shape, and the outer surface of the bolt portion (110) is provided with a first thread (111); and the embedded portion (120) is conical in shape, wherein one end of the embedded portion (120) is connected to the bolt portion (110), and the outer surface of the other end of the embedded portion (120) is provided with a second thread (121). However, after completing its temporary support mission, the exposed portion of such embedded bolts needs to be cut off, which not only consumes a lot of manpower and material resources, but also causes waste of materials.

[0004] To avoid cutting work, in some scenarios, installers will use through-wall bolts, which can be removed when not needed. Although this avoids cutting work, the holes left on the wall will easily lead to the risk of external wall leakage if they are not patched, threatening the building's waterproof performance and structural safety. Patching will bring additional workload and may further affect the overall quality of the building due to improper repair technology or material selection.

[0005] In summary, a more efficient and economical solution is urgently needed. Summary of the invention

[0006] Due to the above-mentioned defects in the prior art, the present invention provides a detachable embedded bolt and an installation method of the detachable embedded bolt; by first setting the embedded part in the wall, and then detachably fixing the bolt and the embedded part, when the bolt is used, it is only necessary to remove the bolt without additional processing of the embedded part. The embedded part is embedded in the wall and will not be exposed on the wall surface. Therefore, after use, there is no need to remove the external structure, and the embedded part can prevent water and air from entering the concrete wall through the holes; compared with the prior art, it is convenient to fix and can be reused after being disassembled, and no subsequent processing is required after disassembly, and there is no risk of leakage in the bolt hole.

[0007] To achieve the above-mentioned object, in a first aspect, the present invention provides a detachable embedded bolt, comprising a wall, an embedded portion embedded in the wall and a bolt;

[0008] The embedded part is configured as a cylinder with internal threads, one end of which is closed and embedded in the wall, and the other end is open, the end surface is flush with the surface of the wall, and a film is provided at the opening;

[0009] One end of the bolt penetrates the film and enters the embedded part from the opening, and is detachably connected to the embedded part through a thread;

[0010] The other end of the bolt is provided with a mounting head, and the external facilities are connected through the mounting head.

[0011] By adopting the above technical solution, the embedded part with threads is fixed to the wall, and the embedded part is fixed to the pin by threads, so as to provide a fixed point on the wall. The structure is simple, and it can withstand a large tensile force along the axis of the bolt. The wire rope can be connected at the bolt installation head to fix the equipment to the wall. The embedded part has good sealing performance, which can prevent air and water from entering the wall through the holes. Therefore, after the screws are used, there is no need to fill the holes. When the screws are removed, the embedded part is completely embedded in the wall, and there is no exposed part of the wall, which does not affect the construction of the external structure, so there is no need to cut. It is more convenient to use. A film is provided at the opening of the embedded part to prevent concrete from flowing into the opening during the pouring process and affecting the fixation of the bolts.

[0012] In some embodiments of the first aspect, the embedded portion includes a sleeve, a nut and a cover plate;

[0013] The sleeve is provided with a through hole inside for the bolt to penetrate;

[0014] One end of the sleeve is embedded in the wall, and a pit is formed on the end surface of the sleeve. The nut is arranged in the pit, and the pit prevents the nut from rotating by limiting the position.

[0015] The bolt passes through the through hole into the pit and is threadedly connected with the nut;

[0016] The cover plate seals and covers the recess;

[0017] The other end of the sleeve is provided with a flange, and is arranged on the surface of the wall through the flange.

[0018] By adopting the above technical solution, the embedded part is split into a sleeve for protecting the hole, a nut for providing threads and a cover plate for sealing. There is no need to carve the internal threads of the cylinder, which makes production easier and reduces the mismatch between the threads in the embedded body and the threads on the bolt.

[0019] In some embodiments of the first aspect, a slope from an edge toward a center is provided at one end of the nut surface close to the sleeve.

[0020] Designed in this way, the slope can guide the bolt naturally into the bolt hole on the nut when the bolt is inserted, making it easier to align.

[0021] In some embodiments of the first aspect, a space for accommodating part of the bolt is provided at one end of the cover plate close to the nut.

[0022] With this design, after the bolt is completely screwed into the nut, it can be screwed in a certain distance to make the bolt tighter. Even if the bolt is partially detached, it can still ensure that the nut and the bolt have more contact surface, providing greater friction.

[0023] In some embodiments of the first aspect, the sleeve is further provided with a groove for accommodating the cover plate, and the cover plate is snapped into the groove.

[0024] With this design, the cover plate is inserted into the groove to prevent concrete from entering the sleeve during the pouring process.

[0025] In some embodiments of the first aspect, an enlarged portion is provided on a contact surface between the embedded portion and the wall, and a cross section of the enlarged portion is larger than that of the embedded portion;

[0026] The enlarged portion is arranged at the end of one end of the embedded portion extending into the wall.

[0027] With such a design, when the concrete has completely solidified, the enlarged portion with a larger cross-section can be stuck in the concrete, so that the entire embedded portion can withstand a greater tensile force.

[0028] In some embodiments of the first aspect, the mounting head includes a U-shaped frame and a latch, the U-shaped frame includes two plates arranged opposite to each other, and the latch is vertically penetrated through the two plates through a latch hole.

[0029] With this design, the U-shaped rack, with a latch in the middle, makes it easier to set hooks or connect ropes, and the U-shaped structure is also more convenient.

[0030] In some embodiments of the first aspect, a small hole is opened at the root of the latch pin for inserting a steel wire to prevent the latch pin from falling off the U-shaped frame.

[0031] In some embodiments of the first aspect, after the bolt is threadedly connected to the embedded part, a portion of the bolt is located outside the wall, and an annular stopper is provided on the portion of the bolt located outside the wall, which fits the wall surface and prevents the bolt from continuing to enter the embedded part.

[0032] With this design, construction workers can clearly see whether the bolts are installed in place. When the block fits the wall surface, it means that the bolts have been installed in place. The block can stop the bolts from going deeper, preventing the bolts from entering too deep to squeeze and damage the end of the embedded part, causing cracks at the end of the embedded part. In addition, the annular block can also limit the deflection of the bolt angle.

[0033] In a second aspect, the present invention provides a method for installing a detachable embedded bolt, comprising the following steps:

[0034] S1: The shape of the wall is formed by a formwork, and the space inside the formwork is used for pouring concrete;

[0035] S2: placing the open end of the embedded portion on the inner side of the template;

[0036] S3: pour concrete into the space inside the formwork;

[0037] S4: After the concrete solidifies, the formwork is removed to form a concrete wall, and the embedded part is fixed inside the concrete wall;

[0038] S5: puncturing the film to expose the opening of the embedded part;

[0039] S6: inserting the bolt into the embedded part through the opening;

[0040] S7: The bolt is rotated so that the bolt and the embedded part are fixed by threads, thereby completing the fixing of the bolt.

[0041] The present application is fixed in the concrete through the embedded part, and the bolt is connected to the embedded part, thereby providing a detachable embedded bolt. After use, you only need to unscrew the bolt without any other subsequent processing. The bolt can be reused, is easy to disassemble, and there is no risk of leakage in the bolt hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The present invention and its features, appearance and advantages will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings. The same reference numerals indicate the same parts in all the drawings. The drawings are not drawn to scale, and emphasis is placed on illustrating the subject matter of the present invention.

[0043] Figure 1 A cross-sectional view of a detachable embedded bolt provided in an embodiment of the present invention when installed in a wall;

[0044] Figure 2 An exploded view of a detachable embedded bolt provided in an embodiment of the present invention;

[0045] Figure 3A cross-sectional view of a sleeve provided in an embodiment of the present invention;

[0046] Figure 4 A schematic diagram of the structure of a nut provided in an embodiment of the present invention;

[0047] Figure 5 A schematic structural diagram of a cover plate provided in an embodiment of the present invention.

[0048] Description of reference numerals:

[0049] 1. Wall;

[0050] 2. embedded part; 21. sleeve; 211. through hole; 212. pit; 213. flange; 22. nut; 23. cover plate;

[0051] 3. Bolt; 31. Mounting head; 311. U-shaped frame; 312. Latch;

[0052] 4. Film;

[0053] 5. Enlarge the part;

[0054] 6. Stop block. DETAILED DESCRIPTION

[0055] The structure of the present invention is further described below in conjunction with the accompanying drawings and specific embodiments, but is not intended to limit the present invention.

[0056] The technical solution of the present invention will be described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0057] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0059] Example

[0060] See also Figure 1, this embodiment provides a detachable embedded bolt, including a wall 1, including an embedded portion 2 and a bolt 3 embedded in the wall 1;

[0061] The embedded part 2 is set to be a cylindrical shape with internal threads, one end of which is closed and embedded in the wall 1, and the other end is open, and the end face is flush with the surface of the wall 1. A film 4 is set at the opening to prevent the inside of the embedded part 2 from being contaminated during pouring;

[0062] One end of the bolt 3 penetrates the film 4 and enters the embedded part 2 from the opening, and is detachably connected to the embedded part 2 through a thread;

[0063] The other end of the bolt 3 is provided with a mounting head 31 , and is connected to external facilities through the mounting head 31 .

[0064] Specifically, the mounting head 31 includes a U-shaped frame 311 and a latch 312. The U-shaped frame 311 includes two plates arranged opposite to each other. The latch 312 is vertically penetrated through the two plates through a latch hole. External facilities are fixed to the latch through ropes, hooks, etc. A small hole is opened at the root of the latch 312 for inserting a steel wire to prevent the latch 312 from falling off the U-shaped frame 311.

[0065] Specifically, the embedded part 2 is made of hard plastic, which is easy to manufacture and has low cost. It can be integrally formed or composed of multiple parts.

[0066] Preferably, see Figures 2 to 5 The embedded part 2 includes a sleeve 21, a nut 22 and a cover plate 23; a through hole 211 is provided inside the sleeve 21 for the bolt 3 to penetrate; one end of the sleeve 21 is embedded in the wall 1, and a pit 212 is provided on its end surface, the nut 22 is arranged in the pit 212, and the pit 212 prevents the nut 22 from rotating by limiting; the bolt 3 passes through the through hole 211 into the pit 212, and is threadedly connected with the nut 22; the cover plate 23 seals and covers the pit 212; the other end of the sleeve 21 is provided with a flange 213, and is set on the surface of the wall 1 through the flange 213.

[0067] Specifically, a slope from the edge toward the center is provided on one end of the surface of the nut 22 close to the sleeve 21 .

[0068] Specifically, a space for accommodating part of the bolts 3 is provided at one end of the cover plate 23 close to the nut 22 ; a groove for accommodating the cover plate 23 is also provided on the end surface of the sleeve 21 , and the cover plate 23 is inserted into the groove to prevent the nut 22 from falling out and seal the pit 212 .

[0069] Specifically, the contact surface between the embedded part 2 and the wall 1 is provided with an enlarged part 5, and the cross-section of the enlarged part 5 is larger than the embedded part 2; preferably, the enlarged part 5 is arranged at the position of the pit 212, so that the cross-section of the sleeve 21 is larger in the pit 212, thereby being able to open a pit 212 with a larger area, thereby accommodating a larger nut 22, thereby increasing the contact surface between the nut 22 and the sleeve.

[0070] Specifically, after the bolt 3 is threadedly connected to the embedded part 2, a part of the bolt 3 is located on the outside of the wall 1, and the part of the bolt 3 located on the outside of the wall 1 is provided with an annular stopper 6, which is a part of the bolt 3. When the bolt 3 is set, the stopper 6 is attached to the surface of the wall 1 and prevents the bolt 3 from continuing to enter the embedded part 2.

[0071] In the prior art, there are generally two ways to set fixing points on the wall. One is to directly embed U-shaped bolts, and use a cutting machine to cut off the exposed part after the bolts are used; the other is to drill holes in the wall and then install detachable through-wall bolts, but the through-wall bolts need to be removed after use, resulting in a bare hole in the wall. If not filled, it will cause leakage and other problems.

[0072] In addition, in the prior art, embedded bolts are generally used to connect plates and rods, and have high requirements for no shaking and stability, and high requirements for precision between components. The technical solution provided by the present application is particularly suitable for locations where wire connection is required. The removable embedded bolts and the installation method of the removable embedded bolts provided by the present application can withstand strong axial tension, have a simpler structure, and do not require subsequent processing after use, which greatly improves construction efficiency.

[0073] The installation method of the above-mentioned removable embedded bolts comprises the following steps:

[0074] S1: The shape of the wall 1 is formed by the formwork, and the space inside the formwork is used for pouring concrete;

[0075] S2: Arrange the opening end of the embedded part 2 on the inner side of the template;

[0076] S3: pour concrete into the space inside the formwork;

[0077] S4: After the concrete solidifies, the formwork is removed to form a concrete wall, and the embedded part 2 is fixed inside the concrete wall;

[0078] S5: puncture the film 4 to expose the opening of the embedded part 2;

[0079] S6: Insert the bolt 3 into the embedded part 2 through the opening;

[0080] S7: By rotating the bolt 3, the bolt 3 and the embedded part 2 are fixed by threads, thereby completing the fixing of the bolt 3.

[0081] Specifically, the embedded part 2 is fixed to the specified position of the template by rivets or glue, the opening of the embedded part 2 is aligned with the inner side of the template and fits with the template, nails are driven in from the outside of the template, the nails penetrate into the embedded part 2, and the embedded part 2 is detachably fixed to the template; before removing the template, the connection between the embedded part 2 and the template is released.

[0082] Those skilled in the art should understand that those skilled in the art can implement variations by combining the prior art and the above embodiments, which will not be described in detail here. Such variations do not affect the essential content of the present invention, and will not be described in detail here.

[0083] The above describes the preferred embodiments of the present invention. It should be understood that the present invention is not limited to the above-mentioned specific embodiments, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can use the above-disclosed methods and technical contents to make many possible changes and modifications to the technical solutions of the present invention without departing from the scope of the technical solutions of the present invention, or modify them into equivalent embodiments of equivalent changes, which does not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solutions of the present invention are still within the scope of protection of the technical solutions of the present invention.

Claims

1. A removable embedded bolt, characterized in that: It comprises an embedded part (2) and a bolt (3) embedded in a wall (1); The embedded part (2) is configured as a cylinder with internal threads, one end of which is closed and embedded in the wall (1), and the other end is open, with the end surface flush with the surface of the wall (1), and a film (4) is provided at the opening; One end of the bolt (3) penetrates the film (4) and enters the embedded part (2) from the opening, and is detachably connected to the embedded part (2) via a thread; The other end of the bolt (3) is provided with a mounting head (31), and is connected to external facilities via the mounting head (31).

2. A detachable embedded bolt according to claim 1, characterized in that: The embedded part (2) comprises a sleeve (21), a nut (22) and a cover plate (23); A through hole (211) is provided inside the sleeve (21) for the bolt (3) to pass through; One end of the sleeve (21) is pre-buried in the wall (1), and a recess (212) is provided on the end surface thereof. The nut (22) is arranged in the recess (212), and the recess (212) prevents the nut (22) from rotating by limiting the position. The bolt (3) passes through the through hole (211) into the recess (212) and is threadedly connected to the nut (22); The cover plate (23) seals and covers the recess (212); The other end of the sleeve (21) is provided with a flange (213), and is arranged on the surface of the wall (1) via the flange (213).

3. A detachable embedded bolt according to claim 2, characterized in that: An end of the surface of the nut (22) close to the sleeve (21) is provided with a slope from the edge toward the center.

4. A detachable embedded bolt according to claim 2, characterized in that: A space for accommodating a portion of the bolt (3) is provided at one end of the cover plate (23) close to the nut (22).

5. A detachable embedded bolt according to claim 2, characterized in that: The sleeve (21) is also provided with a groove for accommodating the cover plate (23), and the cover plate (23) is snapped into the groove.

6. The detachable embedded bolt according to claim 1, characterized in that: An enlarged portion (5) is provided at the contact surface between the embedded portion (2) and the wall (1), and the cross section of the enlarged portion (5) is larger than that of the embedded portion (2); The enlarged portion (5) is arranged at the end of the embedded portion (2) extending into the wall (1).

7. The detachable embedded bolt according to claim 1, characterized in that: The mounting head (31) comprises a U-shaped frame (311) and a latch (312); the U-shaped frame (311) comprises two plates arranged opposite to each other; the latch (312) is arranged on the two plates by vertically penetrating through a latch hole.

8. The detachable embedded bolt according to claim 7, characterized in that: A small hole is provided at the root of the latch pin (312) for inserting a steel wire to prevent the latch pin (312) from falling off the U-shaped frame (311).

9. The detachable embedded bolt according to claim 1, characterized in that: After the bolt (3) is threadedly connected to the embedded part (2), a portion of the bolt (3) is located outside the wall (1), and a ring-shaped stopper (6) is provided on the portion of the bolt (3) located outside the wall (1), wherein the stopper (6) fits the surface of the wall (1) and prevents the bolt (3) from further entering the embedded part (2).

10. A method for installing a detachable embedded bolt, characterized in that: Using the detachable embedded bolt according to any one of claims 1 to 9 comprises the following steps: S1: The shape of the wall (1) is formed by a formwork, and the space inside the formwork is used for pouring concrete; S2: arranging the open end of the embedded portion (2) on the inner side of the template; S3: pour concrete into the space inside the formwork; S4: After the concrete has solidified, the formwork is removed to form a concrete wall, and the embedded part (2) is fixed inside the concrete wall; S5: puncturing the film (4) to expose the opening of the embedded portion (2); S6: inserting the bolt (3) into the embedded portion (2) through the opening; S7: The bolt (3) is rotated so that the bolt (3) and the embedded part (2) are fixed via threads.

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