Prestress reinforcing device for concrete floor crack closing

Abstract

The utility model belongs to the technical field of concrete floor slabs, and particularly relates to a concrete floor slab crack closing prestress reinforcing device which comprises a floor slab body and further comprises two steel plates, the two steel plates are arranged on the front side and the rear side of the floor slab body respectively, and a plurality of installation grooves are formed in one side of each steel plate. The number of the grouting pipes is multiple, and the grouting pipes are fixedly mounted in the corresponding mounting grooves; the number of the clamping plates is four, and every two clamping plates located on the same side are fixedly installed on one side of the corresponding steel plate; by means of the simple structure, stable fixation between the steel plate and the floor slab body and between the steel strand and the floor slab body is achieved, the steel strand is prevented from falling off, the stability of the steel strand is improved, grouting and gap filling can be conveniently conducted on cracks in the floor slab body, and the waterproof performance of the floor slab body can be guaranteed while the strength of the floor slab body is guaranteed; the practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete floor slabs, in particular to a prestressed reinforcement device for closing cracks in concrete floor slabs. Background Technique

[0002] A cast-in-place reinforced concrete floor slab refers to a floor slab made by formwork support, steel bar binding, concrete pouring, curing, and formwork removal on site according to the designed position. This floor slab has the characteristics of firmness, durability, good fire resistance, and low cost.

[0003] In the prior art, a Chinese patent document with the application number: 202122130424.8 discloses a prestressed reinforcement device for closing cracks in concrete floor slabs. The reinforcement device includes a floor slab body. Steel plates are provided on both sides of the floor slab body, and the steel plates cover the cracks on the floor slab body. Anchor devices are provided at both ends of the floor slab body, and the steel plates and the floor slab body are fixed through the anchor devices. Protective members are fixedly arranged on both sides of the floor slab body in an array distribution, and steel strands are wound around the floor slab body in an array distribution, and the steel strands are stuck on the protective members. The reinforcement device of the utility model can prevent the floor slab body from deforming due to cracks by fixing steel plates on both sides of the floor slab body, and can close the cracks in the floor slab body by winding steel strands. The fixing device has a simple structure and is suitable for practical use.

[0004] However, in the above technical solution, only the two concrete floor slabs are clamped and fixed by steel plates, which can only enhance the overall strength of the concrete floor slab and cannot completely eliminate the cracks. Rainwater can still penetrate into the interior of the concrete through the cracks, posing a potential leakage hazard. In addition, the steel strands are simply sleeved and clamped, making the steel strands extremely easy to fall off due to external forces. Therefore, we propose a prestressed reinforcement device for closing cracks in concrete floor slabs to solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to solve the problems in the prior art that only the two concrete floor slabs are clamped and fixed by steel plates, which can only enhance the overall strength of the concrete floor slab and cannot completely eliminate the cracks. Rainwater can still penetrate into the interior of the concrete through the cracks, posing a potential leakage hazard. In addition, the steel strands are simply sleeved and clamped, making the steel strands extremely easy to fall off due to external forces, and to propose a prestressed reinforcement device for closing cracks in concrete floor slabs.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A prestressed reinforcement device for closing cracks in concrete floor slabs, including a floor slab main body, and the reinforcement device further includes:

[0008] Steel plates, two of them are provided, and the two steel plates are respectively arranged on the front side and the rear side of the floor slab main body. A plurality of installation grooves are formed on one side of the steel plates;

[0009] Grouting pipes, a plurality of them are provided, and the grouting pipes are fixedly installed in the corresponding installation grooves;

[0010] Clamping plates, four of them are provided, and the two clamping plates on the same side are both fixedly installed on one side of the corresponding steel plate;

[0011] Anchor rods, two of them are provided, and the two ends of the anchor rods are respectively clamped with the corresponding two clamping plates;

[0012] U-shaped limiting plates, a plurality of them are provided, and the U-shaped limiting plates are clamped on one side of the floor slab main body;

[0013] Steel strands, a plurality of them are provided, and the steel strands are sleeved on the corresponding two U-shaped limiting plates;

[0014] Metal limiting pipes, a plurality of them are provided, and the metal limiting pipes are fixedly installed on one side of the corresponding steel plate, and the metal limiting pipes are sleeved on the corresponding steel strands;

[0015] Tightening assemblies, a plurality of them are provided, and the tightening assemblies are arranged on the corresponding steel strands, and the tightening assemblies are used for tightening and fixing the steel strands.

[0016] As a preferred scheme of the present utility model, the tightening assembly includes a U-shaped frame, a nut, a screw rod, a first connecting ring and a second connecting ring. The nut is fixedly installed on the inner wall of the U-shaped frame. The first connecting ring is fixedly installed at one end of the U-shaped frame. One end of the steel strand is fixedly installed on the first connecting ring. The nut is threadedly sleeved on the screw rod. The second connecting ring is fixedly installed at one end of the screw rod, and the second connecting ring is fixedly installed with the other end of the steel strand.

[0017] As a preferred scheme of the present utility model, the metal limiting pipe is welded to the steel plate.

[0018] As a preferred scheme of the present utility model, the materials of the U-shaped frame, the nut, the screw rod, the first connecting ring and the second connecting ring are stainless steel.

[0019] As a preferred scheme of the present utility model, a plurality of slurry outlet holes are equidistantly arranged on the inner wall of one side of the grouting pipe. Beneficial effects

[0020] 1. By arranging a plurality of grouting pipes on the contact surface between the steel plate and the floor slab main body, it is possible to grout the cracks on the floor slab main body, and then fill the cracks with waterproof slurry to ensure that the cracks on the floor slab main body will not leak water, and it is possible to ensure its waterproofness while ensuring the strength of the floor slab main body;

[0021] 2. By arranging a metal limiting tube on the steel plate, the steel strand can be limited to prevent the steel strand from falling off and improve the stability of the steel strand. The nut can be driven to rotate by rotating the U-shaped frame. When the nut rotates, the threaded connection between the nut and the screw can drive the distance between the first connecting ring and the second connecting ring to adjust, thereby achieving a tightening effect on the steel strand and ensuring the fixing effect of the steel strand to the two steel plates.

[0022] The utility model realizes stable fixation between the steel plate and the steel strand and the floor main body through a simple structure, avoids the steel strand from falling off, improves the stability of the steel strand, and can facilitate grouting and filling cracks on the floor main body. It can ensure the strength of the floor main body while ensuring its waterproofness and is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a three-dimensional main view of the structure of the utility model;

[0024] Figure 2 This is a three-dimensional structural diagram of the steel plate, metal limiting pipe and grouting pipe of the utility model;

[0025] Figure 3 For the utility model Figure 2 Schematic diagram of the structure of part A;

[0026] Figure 4 This is a three-dimensional structural diagram of the U-shaped frame, nut, screw, first connecting ring and second connecting ring of the utility model.

[0027] In the figure: 1. Floor slab body; 2. Steel plate; 3. Clamping plate; 4. Anchor rod; 5. Metal limit pipe; 6. Mounting groove; 7. Grouting pipe; 8. Grouting hole; 9. U-shaped limit plate; 10. Steel strand; 11. U-shaped frame; 12. Nut; 13. Screw; 14. First connecting ring; 15. Second connecting ring. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely 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, rather than all the embodiments. Example

[0029] Reference Figures 1-4 The prestressed reinforcement device for closing cracks in a concrete floor slab comprises a floor slab body 1, and the reinforcement device further comprises:

[0030] Two steel plates 2 are provided, and the two steel plates 2 are respectively provided on the front and rear sides of the floor slab body 1 , and a plurality of mounting grooves 6 are provided on one side of the steel plates 2;

[0031] Grouting pipes 7, which are provided in plurality, are fixedly installed in corresponding mounting grooves 6;

[0032] There are four clamping plates 3, and two clamping plates 3 on the same side are fixedly mounted on one side of the corresponding steel plate 2;

[0033] Two anchor rods 4 are provided, and both ends of the anchor rods 4 are respectively clamped with the corresponding two clamping plates 3;

[0034] A plurality of U-shaped limiting plates 9 are provided, and the U-shaped limiting plates 9 are clamped on one side of the floor slab body 1;

[0035] There are multiple steel strands 10, each of which is sleeved on two corresponding U-shaped limiting plates 9;

[0036] A plurality of metal limiting tubes 5 are provided. The metal limiting tubes 5 are fixedly mounted on one side of the corresponding steel plate 2 and sleeved on the corresponding steel strands 10.

[0037] There are multiple tensioning assemblies, each of which is arranged on a corresponding steel strand 10 , and is used to tighten and fix the steel strand 10 .

[0038] By means of the above structure: by arranging a metal limiting tube 5 on the steel plate 2, the steel strand 10 can be limited to prevent the steel strand 10 from falling off, and the stability of the steel strand 10 can be improved, and by arranging multiple grouting pipes 7 on the contact surface between the steel plate 2 and the floor slab main body 1, the cracks on the floor slab main body 1 can be grouted, thereby filling the cracks with waterproof slurry to ensure that the cracks on the floor slab main body 1 will not leak, and can ensure the strength of the floor slab main body 1 while ensuring its waterproofness.

[0039] As a preferred solution of the present invention, the tensioning assembly includes a U-shaped frame 11, a nut 12, a screw 13, a first connecting ring 14 and a second connecting ring 15. The nut 12 is fixedly mounted on the inner wall of the U-shaped frame 11, the first connecting ring 14 is fixedly mounted on one end of the U-shaped frame 11, one end of the steel strand 10 is fixedly mounted on the first connecting ring 14, the nut 12 is threadedly sleeved on the screw 13, the second connecting ring 15 is fixedly mounted on one end of the screw 13, and the second connecting ring 15 is fixedly mounted to the other end of the steel strand 10. The nut 12 can be driven to rotate by rotating the U-shaped frame 11. When the nut 12 rotates, the threaded connection between the nut 12 and the screw 13 can drive the distance between the first connecting ring 14 and the second connecting ring 15 to be adjusted, thereby achieving the tensioning effect of the steel strand 10 and ensuring the fixing effect of the steel strand 10 on the two steel plates 2.

[0040] As a preferred solution of the present invention, the metal limiting tube 5 and the steel plate 2 are welded together.

[0041] As a preferred solution of the present utility model, the materials of the U-shaped frame 11, the nut 12, the screw rod 13, the first connecting ring 14 and the second connecting ring 15 are stainless steel. By setting the materials of the U-shaped frame 11, the nut 12, the screw rod 13, the first connecting ring 14 and the second connecting ring 15 as stainless steel, the service life of the tensioning assembly can be guaranteed, and corrosion damage can be avoided.

[0042] As a preferred solution of the present utility model, a plurality of slurry outlet holes 8 are equidistantly arranged on the inner wall of one side of the grouting pipe 7. By providing the plurality of slurry outlet holes 8, it is convenient for the waterproof slurry to be evenly poured into the interior of the crack.

[0043] The working principle of the present utility model: During use, first, the metal limiting pipe 5 is arranged on the steel plate 2 to limit the steel strand 10, avoid the steel strand 10 from falling off, and improve the stability of the steel strand 10. Then, by rotating the U-shaped frame 11, the nut 12 can be driven to rotate. When the nut 12 rotates, through the threaded connection and cooperation between the nut 12 and the screw rod 13, the distance between the first connecting ring 14 and the second connecting ring 15 can be adjusted, so as to achieve the tensioning effect on the steel strand 10, and the fixing effect of the steel strand 10 on the two steel plates 2 can be guaranteed. In addition, by arranging a plurality of grouting pipes 7 on the contact surface between the steel plate 2 and the floor main body 1, grouting of the cracks on the floor main body 1 can be realized, and then the cracks are filled with the waterproof slurry to ensure that the cracks on the floor main body 1 do not leak water, and the waterproof property can be guaranteed while ensuring the strength of the floor main body 1.

[0044] The above is only the preferred specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present utility model.

Claims

1. Prestressed reinforcement device for closing cracks in a concrete floor slab, comprising a floor slab main body (1), characterized in that, The reinforcement device further includes: Steel plates (2), two of which are provided. The two steel plates (2) are respectively arranged on the front side and the rear side of the floor slab main body (1), and a plurality of installation grooves (6) are formed on one side of the steel plates (2); Grouting pipes (7), a plurality of which are provided. The grouting pipes (7) are fixedly installed in the corresponding installation grooves (6); Clamping plates (3), four of which are provided. The two clamping plates (3) on the same side are both fixedly installed on one side of the corresponding steel plate (2); Anchor rods (4), two of which are provided. The two ends of the anchor rods (4) are respectively clamped with the corresponding two clamping plates (3); U-shaped limiting plates (9), a plurality of which are provided. The U-shaped limiting plates (9) are clamped on one side of the floor slab main body (1); Steel strands (10), a plurality of which are provided. The steel strands (10) are sleeved on the corresponding two U-shaped limiting plates (9); Metal limiting pipes (5), a plurality of which are provided. The metal limiting pipes (5) are fixedly installed on one side of the corresponding steel plates (2), and the metal limiting pipes (5) are sleeved on the corresponding steel strands (10); Tightening assemblies, a plurality of which are provided. The tightening assemblies are arranged on the corresponding steel strands (10), and the tightening assemblies are used to tighten and fix the steel strands (10).

2. The prestressed reinforcement device for closing cracks in a concrete floor slab according to claim 1, characterized in that The tightening assembly includes a U-shaped frame (11), a nut (12), a screw rod (13), a first connecting ring (14) and a second connecting ring (15). The nut (12) is fixedly installed on the inner wall of the U-shaped frame (11), the first connecting ring (14) is fixedly installed at one end of the U-shaped frame (11), one end of the steel strand (10) is fixedly installed on the first connecting ring (14), the nut (12) is threadedly sleeved on the screw rod (13), the second connecting ring (15) is fixedly installed at one end of the screw rod (13), and the second connecting ring (15) is fixedly installed with the other end of the steel strand (10).

3. The prestressed reinforcement device for closing cracks in a concrete floor slab according to claim 1, characterized in that, The metal limiting pipes (5) are welded to the steel plates (2).

4. The prestressed reinforcement device for closing cracks in a concrete floor slab according to claim 2, characterized in that, The materials of the U-shaped frame (11), the nut (12), the screw rod (13), the first connecting ring (14) and the second connecting ring (15) are stainless steel.

5. The prestressed reinforcement device for closing cracks in a concrete floor slab according to claim 1, characterized in that, A plurality of slurry outlet holes (8) are equidistantly formed on the inner wall of one side of the grouting pipe (7).

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