Core mold anti-floating tooling for hollow floor construction and its use method

Abstract

The present invention relates to the field of building construction technology, specifically to a core mold anti-floating tooling for hollow floor construction and a method of using the same, comprising a center support rod, a limiting sleeve at each end of the center support rod, a threaded connecting rod being connected to the limiting sleeve by a threaded inner thread; and a steel bar limiting card, a through hole being provided on the steel bar limiting card corresponding to the threaded connecting rod, a limiting groove being provided on the steel bar limiting card corresponding to the structural steel bar, the steel bar limiting card being connected to the threaded connecting rod by a nut, and a side of the steel bar limiting card with the limiting groove being located close to the limiting sleeve; the present invention controls the spacing between the upper and lower structural steel bars through the center support rod, the limiting sleeve and the steel bar limiting card, prevents the core mold from floating up and causing uneven thickness of the protective layer, avoids quality accidents, and improves construction efficiency and quality. The tooling has a simple structure and is easy to operate during use, and is worthy of being promoted and used in hollow floor construction.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, in particular to a core mold anti-floating tool for hollow floor construction and a use method thereof. Background Art

[0002] A hollow floor slab is a cast-in-place reinforced concrete hollow floor slab; it is also called a cast-in-place beamless hollow floor slab, which is a hollow floor slab without visible beams that is cast in-place after the core formwork product is installed; a hollow floor slab comprises steel bars, concrete, and core formwork, with the core formwork being embedded in the reinforced concrete; during construction, the core formwork often floats, which can affect the spacing between the lower structure steel bars and the upper structure steel bars, resulting in uneven thickness of the upper and lower protective layers of concrete pouring and an increase in the slab surface elevation, thereby affecting the quality of top slab pouring; currently, it is common practice to place pads and steel bars a second time at the floating part of the core formwork, and to use wire tying for secondary reinforcement to control the spacing between the lower structure steel bars and the upper structure steel bars, which is time-consuming, labor-intensive, and labor-intensive. Summary of the Invention

[0003] In view of the deficiencies in the prior art, the object of the present invention is to provide a core mold anti-floating tooling for hollow floor construction, which is easy to operate, saves manpower, and can prevent the core mold from floating up, and a method of using the same.

[0004] The technical solution adopted by the present invention to solve its technical problem is:

[0005] A core mold anti-floating tooling for hollow floor construction includes a central support rod, a limiting sleeve is provided at each end of the central support rod, and a threaded connecting rod is connected to the inner thread of the limiting sleeve; it also includes a steel bar limiting card, the steel bar limiting card is provided with a through hole corresponding to the threaded connecting rod, the steel bar limiting card is provided with a limiting groove corresponding to the structural steel bar, the steel bar limiting card is connected to the threaded connecting rod through a nut, and the side of the steel bar limiting card with the limiting groove is located close to the limiting sleeve.

[0006] Preferably, a further technical solution of the present invention is:

[0007] Preferably, the central support rod and the threaded connecting rod are both hollow structures.

[0008] Preferably, a plurality of side holes are provided on the side wall of the central support rod.

[0009] Preferably, two limiting grooves are provided on the steel bar limiting clip, and the two limiting grooves are symmetrically arranged with respect to the through hole.

[0010] Preferably, the outer diameter of the limiting sleeve is less than or equal to the diameter of the center hole of the core mold.

[0011] The present invention also discloses a method for preventing a core mold from floating when constructing a hollow floor, which is performed using a core mold for preventing a core mold from floating when constructing a hollow floor. The specific steps are as follows:

[0012] S1: Set up the top slab casting formwork, tie the lower structural steel bars, and mark the location where the core formwork needs to be installed;

[0013] S2: First, connect the threaded connecting rod to both ends of the central support rod. At the marked position, clamp the lower steel bar limit clamp to the lower side of the lower structural steel bar. The lower end threaded connecting rod passes through its through hole and is locked with a nut. The lower steel bar limit clamp and the limit sleeve clamp the lower structural steel bar.

[0014] S3: Install the core mold, and set the center support rod through the center hole of the core mold;

[0015] S4: Tie the upper structure steel bars, then clamp the upper steel bar limiter to the upper side of the upper structure steel bars and tighten it with a nut, so that the upper steel bar limiter and the limit sleeve clamp the upper structure steel bars;

[0016] S5: Finally, pour the concrete.

[0017] Compared with the prior art, the present invention adopting the above technical solution has the following outstanding features:

[0018] The present invention controls the spacing between the upper and lower structural steel bars through the central support rod, the limiting sleeve, and the steel bar limiting card, thereby preventing the core mold from floating up and causing uneven thickness of the protective layer, avoiding quality accidents, and improving construction efficiency and quality. The tooling has a simple structure and is easy to operate, and is worthy of promotion and use in hollow floor construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 2. It is a structural schematic diagram of a core mold anti-floating tooling for hollow floor construction according to an embodiment of the present invention;

[0020] Figure 2 1. It is a schematic diagram of an explosion of a core mold anti-floating tooling for hollow floor construction according to an embodiment of the present invention;

[0021] Figure 3 It is a structural schematic diagram of the use of the core mold anti-floating tooling for hollow floor construction according to an embodiment of the present invention.

[0022] Explanation of the accompanying symbols: 1. Center support rod; 2. Limiting sleeve; 3. Threaded connecting rod; 4. Steel bar limiting card; 401, limiting groove; 5. Nut; 6. Core mold; 7. Lower structure steel bar; 8. Upper structure steel bar. DETAILED DESCRIPTION

[0023] The present invention will be further described below in conjunction with specific embodiments. The purpose is only to better understand the content of the present invention. Therefore, the examples given do not limit the scope of protection of the present invention.

[0024] like Figures 1 to 3As shown, this embodiment provides a core mold anti-floating tooling for hollow floor construction, including a central support rod 1, a limiting sleeve 2 is provided at each end of the central support rod 1, and a threaded connecting rod 3 is connected to the limiting sleeve 2 through an internal thread; the central support rod 1 and the threaded connecting rod 3 are both hollow structures; when pouring concrete, the concrete can flow along the hollow space between the central support rod 1 and the threaded connecting rod 3 to the bottom of the core mold 6, avoiding the problem of thin concrete or even hollow concrete around the central hole of the lightweight core mold 6, thereby improving the construction quality and structural stability; It also includes a steel bar limiting card 4, a through hole is provided on the steel bar limiting card 4 corresponding to the threaded connecting rod 3, a limiting groove 401 is provided on the steel bar limiting card 4 corresponding to the structural steel bar, the steel bar limiting card 4 is connected to the threaded connecting rod 3 through a nut 5, and the side of the steel bar limiting card 4 with the limiting groove 401 is located close to the limiting sleeve 2; in this embodiment, two limiting grooves 401 are provided on the steel bar limiting card 4, and the two limiting grooves 401 are symmetrically arranged about the through hole. For ease of installation, the outer diameter of the limiting sleeve 2 is less than or equal to the center hole diameter of the core mold 6.

[0025] A plurality of side holes are provided on the side wall of the center support rod 1; concrete can flow out of the side holes and fill the center hole of the core mold 6; the connection strength between the core mold 6 and the concrete in the pouring area is increased, ensuring the uniform distribution and curing effect of the concrete.

[0026] like Figure 3 The present invention also discloses a method for preventing core molds from floating when constructing hollow floor slabs, which is performed using core molds for preventing floating when constructing hollow floor slabs. The specific steps are as follows:

[0027] S1: Support the top plate casting formwork, tie the lower structure steel bars 7, and mark the position where the core formwork 6 needs to be installed.

[0028] S2: First connect the threaded connecting rod 3 to the two ends of the central support rod 1, and clamp the steel bar limiting card 4 on the lower side to the lower side of the lower structure steel bar 7 at the marked position. The lower end threaded connecting rod 3 passes through its through hole and is locked and fixed by the nut 5, so that the steel bar limiting card 4 and the limiting sleeve 2 on the lower side clamp the lower structure steel bar 7.

[0029] S3: Install the core mold 6, and the center support rod 1 is set through the center hole of the core mold 6.

[0030] S4: Tie up the upper structure steel bars 8, then clamp the upper steel bar limiting card 4 to the upper side of the upper structure steel bars 8, and lock and fix it with the nut 5, so that the upper steel bar limiting card 4 and the limiting sleeve 2 clamp the upper structure steel bars 8.

[0031] S5: Finally, pour the concrete.

[0032] The present invention controls the spacing between the upper and lower structural steel bars 7 through the central support rod 1, the limiting sleeve 2, and the steel bar limiting card 4, thereby preventing the core mold 6 from floating up and causing uneven thickness of the protective layer, avoiding quality accidents, and improving construction efficiency and quality. The tooling has a simple structure and is easy to operate, and is worthy of promotion and use in hollow floor construction.

[0033] The above description is only a preferred embodiment of the present invention and does not limit the scope of the present invention. Any equivalent changes made by using the contents of the present invention description and the drawings are included in the scope of the present invention.

Claims

1. A method for preventing core formwork from floating when constructing a hollow floor, characterized in that: The hollow floor construction core mold anti-floating tooling is used for anti-floating. The hollow floor construction core mold anti-floating tooling comprises a central support rod (1), a limiting sleeve (2) is provided at each end of the central support rod (1), and the limiting sleeve (2) is internally threadedly connected to a threaded connecting rod (3); and further comprises a steel bar limiting clamp (4), a through hole is provided on the steel bar limiting clamp (4) corresponding to the threaded connecting rod (3), a limiting groove (401) is provided on the steel bar limiting clamp (4) corresponding to the structural steel bar, the steel bar limiting clamp (4) is connected to the threaded connecting rod (3) through a nut (5), and the side of the steel bar limiting clamp (4) with the limiting groove (401) is located close to the limiting sleeve (2); The central support rod (1) and the threaded connecting rod (3) are both hollow structures; A plurality of side holes are provided on the side wall of the central support rod (1); Two limiting grooves (401) are provided on the steel bar limiting clamp (4), and the two limiting grooves (401) are symmetrically arranged with respect to the through hole; The outer diameter of the limiting sleeve (2) is less than or equal to the diameter of the center hole of the core mold (6); The specific steps of the core mold anti-floating method are as follows: S1: support the top plate casting template, tie the lower structure steel bars (7), and mark the position where the core mold (6) needs to be installed; S2: First, connect the threaded connecting rod (3) to both ends of the central support rod (1), clamp the steel bar limit clamp (4) located on the lower side to the lower side of the lower structural steel bar (7) at the marked position, and pass the threaded connecting rod (3) at the lower end through its through hole and lock it with the nut (5), so that the steel bar limit clamp (4) and the limit sleeve (2) located on the lower side clamp the lower structural steel bar (7); S3: Install the core mold (6), and set the center support rod (1) through the center hole of the core mold (6); S4: Tie the upper structure steel bars (8), then clamp the upper steel bar limiter (4) on the upper side of the upper structure steel bars (8), and lock and fix it with a nut (5), so that the upper steel bar limiter (4) and the limit sleeve (2) clamp the upper structure steel bars (8); S5: Finally, pour the concrete.

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