Limiting frame for fixing embedded steel bars

Abstract

The utility model relates to the technical field of assembly type building construction, and particularly discloses a limiting frame for fixing embedded steel bars, which comprises a plurality of embedded steel bar positioning holes with the diameter of 30mm formed in the limiting frame, the thickness of the limiting frame is 1-1.5 mm, a grouting hole with the side length of 660 * 660mm is formed in the center of the limiting frame, a turnup capable of being turned upwards is arranged on the periphery of the grouting hole, and the turnup is connected with the embedded steel bar positioning holes. The turnup is spread towards the middle of the grouting hole, so that an opening with the area smaller than 400 * 400 mm is formed in the middle of the grouting hole. The limiting frame is made of stainless steel with the thickness of 1-1.5 mm, materials are saved, meanwhile, the square stainless steel iron sheet with the opening in the middle of the grouting hole is made into the turned-over edge on the periphery of the grouting hole to be used for enhancing the bearing capacity of the limiting frame, materials are further saved, and the investment cost for manufacturing the limiting frame is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of assembled building construction, in particular to a limiting frame for fixing pre-embedded steel bars. Background Art

[0002] With the rapid development of my country's construction technology, prefabricated building components are widely used in various industrial and civil buildings due to their advantages of factory-based production of components, mechanized construction, fast construction speed and green environmental protection. Prefabricated cavity columns are one of the prefabricated building components. They are hollow columns made of concrete or other materials. Steel bars or other reinforcement materials are installed in the column to enhance its structural strength. During on-site construction, prefabricated cavity columns can be combined with frame beams and floor slabs through cast-in-place concrete. There are partially exposed connecting steel bars at the ends of prefabricated cavity columns. Their function is to fix the connecting steel bars or base steel bars of other prefabricated cavity columns. This fixing method requires docking with special sleeves. Once the connecting steel bars are offset, the installation of the prefabricated cavity columns will be offset, resulting in changes in the position of the prefabricated vertical components, which reduces the acceptance rate of the process. In severe cases, the position of the pre-buried steel bars and the reserved holes of the vertical components of the prefabricated plant are inconsistent, resulting in the inability to install the vertical components, thereby reducing the construction progress and increasing the construction cost. The verticality of the vertical components of the prefabricated plant is difficult to control due to their heavy weight, thereby reducing the acceptance rate of the process. Therefore, it is necessary to achieve accurate positioning of the connecting steel bars of the prefabricated cavity column installation layer.

[0003] The existing method of fixing the embedded steel bars is to use 2.0 mm thick stainless steel to make a 900 × 900 mm square embedded steel bar limit frame, as shown in the attached Figure 1 As shown in the figure, the external dimensions of the limit frame are consistent with the dimensions of the vertical components of the prefabricated plant. The width of the limit frame is 120mm. There are several pre-embedded steel bar positioning holes around the limit frame. The pre-embedded steel bar positioning holes are aligned with the vertical components of the prefabricated plant when viewed from above. Figure 1 As a result, a 660×660mm square grouting hole is opened in the center of the limit frame, and the hole size of the embedded steel bar positioning hole is 4mm larger than the diameter of the embedded steel bar. The embedded steel bar is inserted into the embedded steel bar positioning hole of the limit frame for limitation. Since a 660×660mm square grouting hole is opened in the center of the limit frame, a 660×660mm square stainless steel sheet will be discarded in the middle, resulting in a waste of raw materials for manufacturing the limit frame. Utility Model Content

[0004] The utility model aims to provide a limiting frame for fixing pre-embedded steel bars, so as to solve the problem of material waste caused by manufacturing the existing limiting frames.

[0005] In order to solve the above problems, the technical solutions provided are as follows:

[0006] A limiting frame for fixing embedded steel bars, including a number of embedded steel bar positioning holes with a diameter of 30 mm provided on the limiting frame. The thickness of the limiting frame is 1 - 1.5 mm. A grouting hole with a side length of 660×660 mm is opened in the center of the limiting frame. Flanges that can be turned up are provided around the grouting hole. The flanges spread towards the middle of the grouting hole, making an opening with an area less than 400×400 mm formed in the middle of the grouting hole.

[0007] The basic principle of the above technical solution is that: making the square stainless steel iron sheet in the middle opening of the grouting hole into the flanges around the grouting hole can enhance the load-bearing capacity of the limiting frame, and the material for opening the grouting hole is reused, avoiding waste caused by direct discard.

[0008] The beneficial effect of the above technical solution is that: compared with the existing square embedded steel bar limiting frame made of 2.0 mm thick stainless steel with a size of 900×900 mm, this technical solution uses 1 - 1.5 mm thick stainless steel to make the limiting frame, saving materials. At the same time, making the square stainless steel iron sheet in the middle opening of the grouting hole into the flanges around the grouting hole to enhance the load-bearing capacity of the limiting frame further saves materials and reduces the input cost of manufacturing the limiting frame.

[0009] Further, the surface of the limiting frame is provided with uneven textures. The uneven textures enhance the friction on the surface of the limiting frame, making it not easy to slip off when taking it.

[0010] Further, positioning sleeves are provided on the embedded steel bar positioning holes. The embedded steel bars are inserted into the embedded steel bar positioning holes through the positioning sleeves, so that the limiting frame can limit the embedded steel bars.

[0011] Further, the bottom end of the positioning sleeve is welded to the top end of the embedded steel bar positioning hole, and the middle of the positioning sleeve is made of an arc-shaped elastic sheet that contracts inward relative to the embedded steel bar positioning hole. The arc-shaped elastic sheet can be adjusted according to the thickness of the embedded steel bar and clamp the embedded steel bar.

[0012] Further, arc-shaped handles are fixedly connected to the flanges. The flanges can be easily pulled up through the arc-shaped handles.

[0013] Further, the arc-shaped handles are made of the material cut from the middle opening of the grouting hole. Making the arc-shaped handles from the material cut from the middle opening of the grouting hole further saves materials and reduces cost input. Description of the Drawings

[0014] Figure 1 It is a top view structural schematic diagram of the existing limiting frame;

[0015] Figure 2 It is a top view structural schematic diagram of the limiting frame of the present utility model;

[0016] Figure 3This is the front - view sectional structure schematic diagram of the limit frame of the utility model.

[0017] The reference numerals in the attached drawings of the specification include: limit frame 1, embedded steel bar positioning hole 2, grouting hole 3, flanging 4, opening 5, positioning sleeve 6, arc-shaped elastic piece 7, arc-shaped handle 8. Specific embodiments

[0018] The following is a further detailed description through specific embodiments:

[0019] The embodiment is basically as shown in the attached Figures 2-3 figure:

[0020] A limit frame 1 for fixing embedded steel bars, as shown in Figure 2, includes a limit frame 1, a number of embedded steel bar positioning holes 2 with a diameter of 30 mm provided on the limit frame 1. The surface of the limit frame 1 has uneven textures, the thickness of the limit frame 1 is 1 mm. A grouting hole 3 with a side length of 660×660 mm is opened in the center of the limit frame 1. Flangings 4 that can be folded upwards are provided on the four sides of the grouting hole 3. The flangings 4 spread towards the middle of the grouting hole 3 so that an opening 5 with an area less than 400×400 mm is formed in the middle of the grouting hole 3. As shown in Figure 3, a positioning sleeve 6 is provided on the embedded steel bar positioning hole 2. The bottom end of the positioning sleeve 6 is welded to the top end of the embedded steel bar positioning hole 2. The middle of the positioning sleeve 6 is made of an arc-shaped elastic piece 7 that contracts inwards relative to the embedded steel bar positioning hole 2. An arc-shaped handle 8 is welded on the flanging 4, and the arc-shaped handle 8 is made of the material cut from the opening 5 in the middle of the grouting hole 3.

[0021] The specific implementation process is as follows:

[0022] Place the above-mentioned limit frame 1 on the installation layer of the precast cavity column, and pass the embedded steel bars through the embedded steel bar positioning holes 2 on the limit frame 1 to limit the embedded steel bars, so that the positions of the embedded steel bars and the reserved holes of the vertical components of the prefabricated factory building are always the same, avoiding the situation that the vertical components cannot be installed, accelerating the construction progress and reducing the construction cost.

[0023] The above are only the embodiments of the utility model. Common general knowledge such as specific structures and characteristics in the solution is not described in detail here. It should be noted that for those skilled in the art, without departing from the structure of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the implementation effect of the utility model and the practicability of the patent. The protection scope required by this application should be based on the content of its claims, and the specific implementation methods described in the specification can be used to interpret the content of the claims.

Claims

1. A limiting frame for fixing embedded steel bars, comprising a plurality of embedded steel bar positioning holes with a diameter of 30 mm provided on the limiting frame, characterized in that: The thickness of the limit frame is 1-1.5mm, and a grouting hole with a side length of 660×660mm is opened in the center of the limit frame. A flange that can be folded upward is provided around the grouting hole, and the flange spreads toward the middle of the grouting hole to form an opening with an area less than 400×400mm in the middle of the grouting hole.

2. A limiting frame for fixing embedded steel bars according to claim 1, characterized in that : The surface of the limit frame is provided with an uneven texture.

3. A limiting frame for fixing embedded steel bars according to claim 2, characterized in that: A positioning sleeve is provided on the embedded steel bar positioning hole.

4. A limiting frame for fixing embedded steel bars according to claim 3, characterized in that: The bottom end of the positioning sleeve is welded to the top end of the pre-embedded steel bar positioning hole, and the middle of the positioning sleeve is made of an arc-shaped spring piece that shrinks inwardly relative to the pre-embedded steel bar positioning hole.

5. A limiting frame for fixing embedded steel bars according to claim 4, characterized in that: An arc handle is fixedly connected to the flange.

6. A limiting frame for fixing embedded steel bars according to claim 5, characterized in that: The arc-shaped handle is made of material cut from the middle opening of the grouting hole.

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