A rotatable pre-embedded screw conical top support nut module

Abstract

The present invention belongs to the field of reinforced concrete construction, and particularly relates to a rotatable pre-embedded screw conical top support nut module, comprising a truncated cone top support shell, the truncated cone top support shell is divided into four separate arc shells, and an expandable elliptical tube is fixed between adjacent arc shells; a truncated cone ring is provided at the rear of the truncated cone top support shell, a thin circular cylinder is provided through the truncated cone ring, and an annular baffle is provided on the outer periphery of the thin circular cylinder; and also includes a thick circular cylinder, the outer periphery of the thick circular cylinder is fixedly connected to the expandable ring sheet, and a spring is sleeved between the thick circular cylinder and the thin circular cylinder. The conical top support nut module of the present invention can automatically fall off from the pre-embedded screw eyelet as the template is removed, solving the problem of manual removal in traditional construction technology.

Description

Technical Field

[0001] The invention belongs to the field of reinforced concrete construction, and in particular relates to a rotatable pre-embedded screw rod conical top support nut module. Background Art

[0002] In the construction industry, pull-to-pull waterstop screws are widely used in reinforced concrete formwork projects. After the concrete is poured, they need to be dismantled and processed, especially for water structures, basements and other walls with strong water seepage. The current common practice is to manually use tools to remove the conical plastic top support of the pull-to-pull waterstop screw, and then use waterproof mortar to seal the bell mouth tightly. The existing practice has the following defects: First, when using tools to remove the conical plastic top support, the conical plastic top support is completely destroyed and can no longer be used in circulation, which wastes materials and increases project costs; second, because the conical plastic top support is embedded in the already poured concrete, during the chiseling process, not only is the removal efficiency relatively low, but it is also easy to scratch the surrounding wall concrete, resulting in improper protection of the finished product, affecting the appearance of the concrete, and increasing the difficulty of later sealing. At the same time, it also increases the amount of sealing materials, resulting in an increase in the cost of sealing construction. Summary of the invention

[0003] The problem to be solved by the present invention is to overcome the shortcomings of the background technology and provide a rotatable pre-embedded screw conical top support nut module.

[0004] The present invention is achieved through the following technical solutions:

[0005] A rotatable pre-embedded screw conical top support nut module comprises a truncated cone top support shell, the truncated cone top support shell is divided into four separate arc-shaped shells, both side walls of the arc-shaped shell along the length direction are provided with arc-shaped grooves, two arc-shaped grooves of adjacent arc-shaped shells are fixed together with a flexible elliptical tube, and the flexible elliptical tube can be deformed; a truncated cone ring is provided at the rear of the truncated cone top support shell, the outer wall of the truncated cone ring is fixed together with the inner wall of the truncated cone top support shell, a thin circular cylinder is provided through the truncated cone ring, and the rear outer wall of the thin circular cylinder is fixed to the inner wall of the truncated cone top support shell The inner wall of the rear part of the truncated cone ring is fixed together, the rear ends of the thin circular cylinder and the truncated cone ring are flush with the rear end of the truncated cone top support shell, and an annular baffle is provided on the outer periphery of the thin circular cylinder; it also includes a thick circular cylinder, the outer periphery of the thick circular cylinder is fixedly connected to the flexible ring sheet, the thickness of the flexible ring sheet gradually decreases from the thick circular cylinder to the outside, and the outer periphery of the flexible ring sheet is fixed together with the inner wall of the front end of the truncated cone top support shell; the inner diameter of the thick circular cylinder is larger than the outer diameter of the thin circular cylinder, a spring is sleeved between the thick circular cylinder and the thin circular cylinder, and the spring is located between the flexible ring sheet and the annular baffle.

[0006] Preferably, a plurality of positioning posts are evenly distributed on the outer circumference of the thick circular cylinder, and the positioning posts are located in front of the flexible ring sheet.

[0007] Preferably, the thin circular cylinder is provided with an internal thread, and the thin circular cylinder and the embedded screw rod can be threadedly connected.

[0008] Preferably, the rear end of the expandable elliptical tube is blocked or the rear portion is solid.

[0009] Preferably, when the flexible expandable annular piece is convex forward, the major axis direction of the flexible expandable elliptical tube is along the diameter direction of the truncated cone top support shell; when the flexible expandable annular piece is convex backward, the minor axis direction of the flexible expandable elliptical tube is along the diameter direction of the truncated cone top support shell.

[0010] Preferably, the expandable elliptical tube is a metal tube with a thickness of 0.05-0.5 mm.

[0011] Preferably, the thickness of the truncated cone top support shell gradually increases from the front to the rear.

[0012] Preferably, the truncated cone top support shell is made of hard plastic or metal.

[0013] Beneficial effects of the present invention:

[0014] 1. After the concrete pouring is completed and the formwork removal conditions are met, the conical top support nut module of the present invention can automatically fall off from the bell mouth of the embedded screw as the formwork is removed, solving the problem of manual removal in traditional construction technology;

[0015] 2. Compared with the traditional manual or auxiliary tool removal of the conical top support nut module, it can avoid damage to the finished concrete product and the wall concrete, and the pre-embedded screw bell mouth is formed in a regular and standard manner, which improves the appearance of concrete quality;

[0016] 3. The present invention can be put into use multiple times, saving engineering costs;

[0017] 4. The use of the conical top support nut module of the present invention saves the construction period of the conical top support nut module, thereby improving construction efficiency and saving construction period;

[0018] 5. Compared with the traditional conical top support nut module, it saves the amount of sealing materials and reduces the construction cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure after assembly of this embodiment;

[0020] Figure 2 This is a schematic diagram of the structure of the thin circular cylinder and the thick circular cylinder of this embodiment;

[0021] Figure 3 This is a schematic diagram of the thin circular cylinder structure of this embodiment;

[0022] Figure 4This is a schematic diagram of the thick circular cylinder structure of this embodiment;

[0023] Figure 5 This is a schematic diagram of the structure of the truncated cone top support shell of this embodiment;

[0024] Figure 6 This is a schematic diagram of the structure of the outer shell of the truncated cone top support of this embodiment;

[0025] Figure 7 This is a schematic diagram of the flexible elliptical tube structure of this embodiment;

[0026] Figure 8 This is a schematic diagram of the truncated cone ring structure of this embodiment;

[0027] Fig. 9 This is a schematic diagram of the cutaway structure of this embodiment;

[0028] Fig.10 This is a schematic diagram of the structure of the flexible ring piece in the embodiment in a forward convex state;

[0029] Fig.11 This is a schematic diagram of the structure of the flexibly expandable ring piece in the backward convex state of this embodiment.

[0030] In the figure, 1 is a truncated cone top support shell, 2 is an arc-shaped shell, 3 is an arc-shaped groove, 4 is an expandable elliptical tube, 5 is a truncated cone ring, 6 is a thin circular cylinder, 7 is an annular baffle, 8 is a thick circular cylinder, 9 is an expandable ring sheet, 10 is a spring, and 11 is a positioning column. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0032] The embedded screw conical top support nut module of this embodiment includes a truncated cone top support shell 1. The shape of the truncated cone top support shell 1 is similar to the shape of the conical plastic top support used on the embedded screw at present, and both are in the shape of a truncated cone (trumpet-shaped) as a whole. The difference is that the truncated cone top support shell 1 of this embodiment is divided into four separate arc-shaped shells 2, and the four arc-shaped shells 2 form the truncated cone top support shell 1. The arc-shaped shell 2 is provided with arc grooves 3 on both side walls along the length direction, and the arc grooves 3 of adjacent arc-shaped shells 2 are fixed together with a flexible elliptical tube 4, that is, the flexible elliptical tube 4 is clamped between the arc grooves 3 of the arc-shaped shell 2, and the arc groove 3 is consistent with the arc surface of the flexible elliptical tube 4. The adjacent arc-shaped shells 2 are not connected to each other, but the four arc-shaped shells 2 are connected together by four flexible elliptical tubes 4. The flexible elliptical tube 4 is hollow inside and has an elliptical longitudinal section. The flexible elliptical tube 4 can be deformed under the action of external force, and the size of the truncated cone top support shell 1 changes through the deformation of the flexible elliptical tube 4. The flexible elliptical tube 4 is made of a material that can produce deformation and has a relatively thin wall. In this embodiment, the flexible elliptical tube 4 can preferably be a metal tube with a thickness of 0.05-0.5 mm.

[0033] In order to improve the quality of the truncated cone top support shell 1 and reduce the damage rate during use, the thickness of the truncated cone top support shell 1 is preferably gradually increased from front to back, and the end of the truncated cone top support shell 1 with a larger diameter is the front, and the end with a smaller diameter is the back, that is, the wall thickness of the back of the truncated cone top support shell 1 is slightly thicker than the wall thickness of the front. The truncated cone top support shell 1 is preferably made of hard plastic or metal. As the thickness of the truncated cone top support shell 1 gradually increases, the diameter of the arc-shaped groove 3 on the side wall of the arc-shaped shell 2 also gradually increases. Therefore, the size of the expandable elliptical tube 4 sandwiched between the arc-shaped grooves 3 also gradually increases from front to back, as shown in the attached figure. Figure 7 shown.

[0034] Preferably, in order to prevent concrete from entering the interior of the expandable elliptical tube 4 during construction, the rear end of the expandable elliptical tube 4 can be blocked. An elliptical sheet can be used to directly seal the rear end opening of the expandable elliptical tube 4. Alternatively, when making the expandable elliptical tube 4, a small section of its rear end can be made solid, and the rest of the part is still hollow.

[0035] A truncated cone ring 5 is provided at the rear of the truncated cone support housing 1. The truncated cone ring 5 is located inside the truncated cone support housing 1. The rear end of the truncated cone ring 5 is flush with the rear end of the truncated cone support housing 1. The outer wall of the truncated cone ring 5 is fixed to the inner wall of the truncated cone support housing 1. The truncated cone ring 5 can be formed integrally with the truncated cone support housing 1. If the truncated cone support housing 1 is made of hard plastic, the truncated cone ring 5 and the truncated cone support housing 1 can be directly integrally molded together; if the truncated cone support housing 1 is made of metal, the truncated cone ring 5 and the truncated cone support housing 1 can be directly integrally cast or welded together.

[0036] A thin circular cylinder 6 is provided through the truncated cone ring 5, and the rear end of the thin circular cylinder 6 is also flush with the rear end of the truncated cone top support shell 1, and the rear outer wall of the thin circular cylinder 6 is fixed together with the rear inner wall of the truncated cone ring 5. The inner wall of the thin circular cylinder 6 may or may not be provided with an internal thread, and a pre-embedded screw is to be passed through the thin circular cylinder 6. If the inner wall of the thin circular cylinder 6 is not provided with a thread, the thin circular cylinder 6 may be 2-4mm larger than the diameter of the pre-embedded screw; if the inner wall of the thin circular cylinder 6 is provided with an internal thread, the thin circular cylinder 6 and the pre-embedded screw can be threaded together. In this embodiment, the thin circular cylinder 6 is preferably provided with an internal thread, which facilitates positioning during template installation. An annular baffle 7 is provided on the outer periphery of the thin circular cylinder 6, and the annular baffle 7 is a metal ring plate that surrounds the thin circular cylinder 6 and extends outward perpendicular to the thin circular cylinder 6.

[0037] The present invention also includes a thick circular cylinder 8, and a flexible ring piece 9 is fixedly connected to the outer periphery of the thick circular cylinder 8. The flexible ring piece 9 has a certain hardness and stretchability, and can be deformed under the action of external force. The thickness of the flexible ring piece 9 gradually decreases from the thick circular cylinder 8 to the outside, and its appearance is similar to an umbrella, and its longitudinal section is close to a triangle. The outer periphery of the flexible ring piece 9 is fixed to the front inner wall of the truncated cone top support shell 1. The inner diameter of the thick circular cylinder 8 is larger than the outer diameter of the thin circular cylinder 6. The centers of the thick circular cylinder 8 and the thin circular cylinder 6 are on the same axis. A spring 10 is sleeved between the thick circular cylinder 8 and the thin circular cylinder 6, and the spring 10 is located between the flexible ring piece 9 and the annular baffle 7. The thick circular cylinder 8 can be pushed and moved into the interior of the truncated cone top support shell 1. When the thick circular cylinder 8 moves into the interior of the truncated cone top support shell 1, the spring 10 will be compressed, and the flexible ring piece 9 will be deformed, gradually changing from convex forward to convex backward. During the deformation of the flexible ring piece 9, the truncated cone top support shell 1 will be supported outward, causing the flexible elliptical tube 4 sandwiched between the truncated cone top support shell 1 to deform, thereby causing the front diameter of the truncated cone top support shell 1 to increase outward, and the annular baffle 7 can limit the moving distance of the thick circular cylinder 8; conversely, the elastic force of the spring 10 can cause the thick circular cylinder 8 to move outward inside the truncated cone top support shell 1, and the flexible ring piece 9 will gradually change from convex backward to convex forward, returning to its original state. In this process, the flexible elliptical tube 4 sandwiched between the truncated cone top support shell 1 is deformed again, and the front diameter of the truncated cone top support shell 1 returns to its original size. During construction, as long as the size of the front part of the frustum of the cone top support shell 1 changes slightly, such as a change of 1-2mm in diameter, the entire module can be demoulded from the concrete. In order to make the front part of the frustum of the cone top support shell 1 change more, preferably, when the flexible ring segment 9 is convex forward, the major axis direction of the flexible elliptical tube 4 is along the diameter direction of the frustum of the cone top support shell 1; when the flexible ring segment 9 is convex backward, the minor axis direction of the flexible elliptical tube 4 is along the diameter direction of the frustum of the cone top support shell 1.

[0038] In this embodiment, four positioning columns 11 are evenly arranged on the outer circumference of the thick circular cylinder 8. The positioning columns 11 are cylindrical and are located in front of the flexible ring piece 9. The positioning columns 11 have three functions: first, when the template is opened, if the template hole is too large due to uneven opening, the template cannot accurately squeeze the thick circular cylinder 8 when the template is installed, which may cause the truncated cone top support shell 1 to fail due to deformation during the installation of the template. At this time, any one of the four positioning columns 11 can clamp the template to avoid the above failure; second, when disassembling the truncated cone top support shell 1, if it is difficult to disassemble, a round iron ring can be made of iron wire, which can be directly put on the positioning column 11, and the truncated cone top support shell 1 can be taken out by pulling it outward; third, grabbing the positioning column 11 and rotating it can make the truncated cone top support shell 1 rotate, which is convenient for the truncated cone top support shell 1 to be separated from the embedded screw.

[0039] Usage process:

[0040] When the template is installed: the embedded screw passes through the thin circular cylinder 6 and the thick circular cylinder 8 of the truncated cone top support shell 1, and then the template is installed. In the process of reinforcing the template, as the flange nut of the mountain-shaped clamp on the outside of the template is tightened, the inside of the template squeezes the thick circular cylinder 8 to move into the truncated cone top support shell 1, and squeezes the internal spring 10 to compress. The thick circular cylinder 8 drives the flexible ring piece 9 to deform inward and bend around. The flexible ring piece 9 gradually changes from convex forward to convex backward. When the flexible ring piece 9 bends around, the short axis direction of the flexible elliptical tube 4 is along the diameter direction of the truncated cone top support shell 1, so that the diameter of the truncated cone top support shell 1 becomes larger.

[0041] When the formwork is removed: After the formwork is removed, under the action of the spring 10, the thick circular cylinder 8 moves forward (moves outside the truncated cone top support shell 1), causing the expandable ring piece 9 to expand from the inside to the outside, gradually changing from convex backward to the initial convex forward, and driving the size of the truncated cone top support shell 1 to change, and the expandable elliptical tube 4 gradually returns to its original state, and the long axis direction of the expandable elliptical tube 4 is along the diameter direction of the truncated cone top support shell 1. The front diameter of the truncated cone top support shell 1 becomes smaller than when the formwork is installed, and the truncated cone top support shell 1 is separated from the concrete surface. Then, the truncated cone top support shell 1 can be directly pulled out from the formed screw eye (trumpet mouth). If it is difficult to remove, a circular iron ring can be made of iron wire and directly put on the metal column. The truncated cone top support shell 1 can be taken out by pulling it outward. When the thin circular cylinder 6 is threadedly connected to the embedded screw, the positioning column 11 can be grasped to rotate the truncated cone top support shell 1 to separate the truncated cone top support shell 1 from the embedded screw.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A rotatable pre-embedded screw conical top support nut module, comprising a truncated cone top support housing (1), characterized in that: The truncated cone support shell (1) is divided into four separate arc-shaped shells (2). The two side walls of the arc-shaped shell (2) along the length direction are provided with arc-shaped grooves (3). The two arc-shaped grooves (3) of the adjacent arc-shaped shells (2) are fixed together with a flexible elliptical tube (4). The flexible elliptical tube (4) is deformable. A truncated cone ring (5) is provided at the rear of the truncated cone support shell (1). The outer wall of the truncated cone ring (5) is fixed together with the inner wall of the truncated cone support shell (1). A thin circular cylinder (6) is provided through the truncated cone ring (5). The rear outer wall of the thin circular cylinder (6) is fixed together with the rear inner wall of the truncated cone ring (5). The rear end of the thin circular cylinder (6) and the rear end of the truncated cone ring (5) are both flush with the rear end of the truncated cone support shell (1). An annular baffle (7) is provided on the outer periphery of the thin circular cylinder (6). It also includes a thick circular cylinder (8 ), the outer circumference of the thick circular cylinder (8) is fixedly connected to the flexible ring piece (9), the thickness of the flexible ring piece (9) gradually decreases from the thick circular cylinder (8) to the outside, and the outer circumference of the flexible ring piece (9) is fixed together with the inner wall of the front end of the truncated cone top support shell (1); the inner diameter of the thick circular cylinder (8) is greater than the outer diameter of the thin circular cylinder (6), a spring (10) is sleeved between the thick circular cylinder (8) and the thin circular cylinder (6), and the spring (10) is located between the flexible ring piece (9) and the annular baffle (7); when the flexible ring piece (9) is convex forward, the major axis direction of the flexible elliptical tube (4) is along the diameter direction of the truncated cone top support shell (1); when the flexible ring piece (9) is convex backward, the minor axis direction of the flexible elliptical tube (4) is along the diameter direction of the truncated cone top support shell (1); the thickness of the truncated cone top support shell (1) gradually increases from the front to the rear.

2. The rotatable pre-embedded screw conical supporting nut module according to claim 1 is characterized in that: A plurality of positioning columns (11) are evenly distributed on the outer circumference of the thick circular cylinder (8), and the positioning columns (11) are located in front of the flexible ring sheet (9).

3. The rotatable pre-embedded screw conical supporting nut module according to claim 1 or 2, characterized in that: The thin circular cylinder (6) is provided with an internal thread, and the thin circular cylinder (6) can be threadably connected to the embedded screw rod.

4. The rotatable pre-embedded screw conical supporting nut module according to claim 3 is characterized in that: The rear end of the expandable elliptical tube (4) is blocked or the rear part is solid.

5. The rotatable pre-embedded screw conical supporting nut module according to claim 3 is characterized in that: The flexible elliptical tube (4) is a metal tube with a thickness of 0.05-0.5 mm.

6. The rotatable pre-embedded screw conical supporting nut module according to claim 3 is characterized in that: The truncated cone top support shell (1) is made of hard plastic or metal.

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