Slurry leakage prevention split screw rod for cast-in-place bare concrete

Abstract

The utility model discloses a slurry leakage prevention split screw rod for cast-in-place bare concrete. The slurry leakage prevention split screw rod comprises an inner screw rod, an outer screw rod and two plugs. The two plugs are installed at the two ends of the inner screw correspondingly and are in threaded fit with the inner screw. And the inner end of the outer screw rod penetrates through the template and is in threaded fit with the outer end of the plug. And a nut is mounted on the external thread. The leakage-proof piece is arranged between the plug and the template, so that the plug part is not in direct contact with the template, and the situation of slurry leakage caused by untight combination between the plug part and the template is avoided. And meanwhile, the inner surface of the leakage-proof piece is arranged to be a smooth surface, so that the leakage-proof effect of the plug can be achieved under the condition that the template and the screw are made of common materials in the prior art, and the increase of the material cost of the template and the screw is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of tie rod technology, specifically relating to a tie rod for preventing grout leakage in cast-in-place fair-faced concrete. Background Technology

[0002] In existing technologies, tie rods are an indispensable material in formwork engineering, widely used in the formwork process for wall panels and beams. However, due to insufficient precision of the tie rod material, cavities inside the plugs, and imperfections on the surface of ordinary formwork, leakage of grout at openings often occurs due to poor adhesion between the two. These problems can be solved in traditional concrete engineering because of the presence of a secondary decorative surface. However, for fair-faced concrete, these are issues that require special attention.

[0003] Currently, the main method for treating fair-faced concrete is to use specialized formwork and tie rods. This approach ensures a smooth formwork surface and a tight fit between the custom-made tie rods and the formwork, preventing problems from occurring in two ways. However, this also increases the cost of raw materials, with the cost of the formwork alone increasing by 2-3 times.

[0004] If the aforementioned special materials are not used, especially when ordinary templates are used, measures need to be taken to seal the leaks. One possible solution is to fill the inside of the tie rod plug with rubber plugs or glass glue. However, after actual testing, the effect is still not good. The area around the plug will have localized minor grout leakage, which will cause problems with the overall appearance of the surface layer and cannot be solved by later repairs. Utility Model Content

[0005] To overcome the shortcomings of existing technologies, this utility model provides a grout-proof tie rod for cast-in-place fair-faced concrete, which solves the technical problems of easy grout leakage at the plug of the tie rod and excessive cost.

[0006] To achieve the above objectives, the specific technical solution of this utility model is as follows:

[0007] A leak-proof tie rod for cast-in-place fair-faced concrete includes an inner threaded rod, an outer threaded rod, and two plugs. The two plugs are respectively installed at both ends of the inner threaded rod and are threadedly engaged with it. The inner end of the outer threaded rod passes through a template and is threadedly engaged with the outer end of one of the plugs. A nut is installed on the outer thread.

[0008] A leak-proof component is provided between the plug and the template. The diameter of the leak-proof component is greater than or equal to the outer diameter of the plug.

[0009] Furthermore, the outer edge of the plug is provided with sealant.

[0010] Furthermore, the leak-proof component has a through-hole. The inner ring of the through-hole has an internal thread that mates with the external screw.

[0011] Furthermore, the adjacent sides of the leak-proof component and the plug are smooth planes.

[0012] Furthermore, a waterproof plate is fixed to the middle of the internal screw.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] 1. This utility model provides a leak-proof component between the plug and the template, preventing the plug from directly contacting the template and avoiding grout leakage due to loose bonding between the two.

[0015] 2. By setting up a leak-proof component with a smooth inner surface, the present invention enables the template and screw to achieve the effect of plugging and preventing leakage when using materials commonly used in existing processes, thus avoiding an increase in the material cost of the template and screw. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a side view of the structure of this utility model;

[0018] Figure 3 This is a schematic diagram showing the relative positions of the plug and the leak-proof component in this utility model. Figure 2 (Enlarged view of part A in the middle section).

[0019] Reference numerals: 1. Internal threaded rod; 2. External threaded rod; 3. Plug; 4. Waterproof membrane; 5. Leak-proof component; 6. Clearance through hole; 7. Template. Detailed Implementation

[0020] In the description of this utility model, it should be understood that the terms "one end", "the other end", "outer side", "upper side", "inner side", "horizontal", "coaxial", "center", "end", "length", "outer end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] The present invention will be further described below with reference to the accompanying drawings.

[0022] like Figure 1 and 2As shown, a type of anti-leakage tie rod for cast-in-place fair-faced concrete includes an inner threaded rod 1, an outer threaded rod 2, and two plugs 3. A waterproof plate 4 is fixed to the middle of the inner threaded rod 1 to prevent water from seeping through the threaded holes in the wall.

[0023] Two plugs 3 are respectively installed at both ends of the inner screw 1 and are threaded into the inner screw 1. The inner end of the outer screw 2 passes through the template 7 and is threaded into the outer end of the plug 3. A nut is installed on the outer thread to cooperate with the plug 3 to limit and clamp the template 7. A leak-proof component 5 is provided between the plug 3 and the template 7. The diameter of the leak-proof component 5 is greater than or equal to the outer diameter of the plug 3, so that the leak-proof component 5 can seal the inner cavity of the plug 3.

[0024] Furthermore, the outer edge of the plug 3 is provided with sealant to prevent concrete slurry from entering the internal cavity of the plug 3 through the gap between the leak-proof part 5 and the plug 3, thus preventing slurry leakage.

[0025] In this embodiment, the adjacent sides of the leak-proof component 5 and the plug 3 are smooth planes, which further ensures that the plug 3 can fit tightly with the leak-proof component 5, effectively preventing concrete slurry from leaking out from the gap between the leak-proof component 5 and the plug 3.

[0026] like Figure 3 As shown, in this embodiment, the leak-proof component 5 has a through-hole 6. The inner ring of the through-hole 6 has an internal thread that mates with the external screw 2, thereby achieving a threaded connection between the leak-proof component 5 and the external screw 2. During installation, by rotating the leak-proof component 5 and engaging with the external screw 2, the leak-proof component 5 moves towards the plug 3 until it comes into contact with the outer end face of the plug 3, thus sealing the internal cavity of the plug 3.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A type of anti-leakage tie rod for cast-in-place fair-faced concrete, comprising an inner threaded rod (1), an outer threaded rod (2), and two plugs (3); the two plugs (3) are respectively installed at both ends of the inner threaded rod (1) and threadedly engaged with the inner threaded rod (1); the inner end of the outer threaded rod (2) passes through a template (7) and threadedly engages with the outer end of the plugs (3); a nut is installed on the outer thread, characterized in that: A leak-proof component (5) is provided between the plug (3) and the template (7); the diameter of the leak-proof component (5) is greater than or equal to the outer diameter of the plug (3).

2. The anti-leakage tie rod for cast-in-place fair-faced concrete according to claim 1, characterized in that: The outer edge of the plug (3) is provided with sealant.

3. A grout-proof tie rod for cast-in-place fair-faced concrete according to claim 1, characterized in that: The leak-proof component (5) has a through-hole (6); the inner ring of the through-hole (6) has an internal thread that matches the external screw (2).

4. A grout-proof tie rod for cast-in-place fair-faced concrete according to claim 1, characterized in that: The adjacent sides of the leak-proof component (5) and the plug (3) are smooth planes.

5. A grout-proof tie rod for cast-in-place fair-faced concrete according to claim 1, characterized in that: A waterproof plate (4) is fixed in the middle of the inner screw (1).

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