A pre-buried casing fixing device

Abstract

The utility model relates to a pre-buried sleeve fixing device, comprising a sleeve and a compression spring, wherein a rubber pad is installed on the inner side of both ends of the sleeve respectively in an interference fit, and a rubber base is installed on both ends of the compression spring respectively, and the compression spring and the two rubber bases are installed in the sleeve between the two rubber pads, and the rubber base and the rubber pad are clamped between the compression spring and the aluminum mold under the restoring force of the compression spring, and the rubber base and the rubber pad support the sleeve to be clamped between two symmetrical aluminum molds. The beneficial effect is that the sleeve is supported between the two symmetrical aluminum molds by the compression spring, the rubber base and the rubber pad, and the sleeve is prevented from sliding freely between the two symmetrical aluminum molds due to gravity, so that the workers can adjust the position of the sleeve, thereby facilitating the positioning and installation of the sleeve, and the compression spring, the rubber base and the rubber pad can be reused, thereby reducing the cost of the sleeve fixing device.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a pre-buried sleeve fixing device. Background Art

[0002] At present, the reinforcement method for standard-layer beam sleeves in residential projects is generally to fix the embedded sleeves with reinforcing anchor bars, and then fix the reinforcing anchor bars to the beam and slab steel mesh. In order to ensure the horizontality of the sleeves, the reinforcement method is changed to spot welding. However, the overall investment of spot welding reinforcement method is relatively large.

[0003] Aluminum formwork is often used for the construction of standard floors in residential projects. However, the number of embedded sleeves through beams in standard floors of residential projects is often large, the construction is frequent and the construction time is short. Therefore, how to facilitate the installation and fixation of embedded sleeves and the reuse of fixing devices without affecting the quality effect has become a problem that construction companies need to solve. Utility Model Content

[0004] The purpose of the utility model is to overcome the above problems existing in the prior art and provide a pre-buried casing fixing device.

[0005] In order to achieve the above technical objectives and the above technical effects, the present invention is implemented through the following technical solutions:

[0006] A pre-buried sleeve fixing device comprises a sleeve and a compression spring. A rubber pad is installed on the inner side of each end of the sleeve in an interference fit manner. A rubber base is installed on each end of the compression spring. The compression spring and the two rubber bases are installed in the sleeve between the two rubber pads. Under the action of the restoring force of the compression spring, the rubber base and the rubber pad are clamped between the compression spring and an aluminum mold. The rubber base and the rubber pad support sleeve is clamped between two symmetrical aluminum molds.

[0007] The free length of the compression spring is greater than the length of the sleeve, the outer diameter of the compression spring is smaller than the inner diameter of the sleeve, and the elastic capacity of the compression spring is 0.05-3.0 N / mm.

[0008] Wherein, the diameter of the rubber base is equal to the inner diameter of the sleeve, and the outer side surface of the rubber base is a smooth surface.

[0009] Wherein, the diameter of the rubber pad is equal to the diameter of the rubber base.

[0010] Wherein, one end of the rubber pad away from the rubber base is a rough surface.

[0011] Wherein, the thickness of the rubber base is at least three times the thickness of the rubber pad.

[0012] Among them, the outer side wall of the sleeve is tied with anchor bars, and the anchor bars are tied to the steel mesh between the two aluminum molds.

[0013] The beneficial effects of the utility model are as follows: the sleeve is supported between two symmetrical aluminum molds by the cooperation of the compression spring, the rubber base and the rubber pad, so as to prevent the sleeve from sliding freely between the two symmetrical aluminum molds due to gravity, so that workers can adjust the position of the sleeve, thereby facilitating the positioning and installation of the sleeve, and the compression spring, the rubber base and the rubber pad can be reused, thereby reducing the cost of the sleeve fixing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0015] Figure 1 It is a structural schematic diagram of the combination of the embedded casing fixing device, the steel mesh and the aluminum mold in the utility model;

[0016] Figure 2 It is a structural schematic diagram of the embedded casing fixing device in the utility model;

[0017] Figure 3 It is a schematic diagram of the structure of the utility model in which the compression spring, rubber pad and rubber base are installed in the longitudinally cut sleeve;

[0018] Explanation of the numbers in the figure: sleeve 1, compression spring 2, rubber pad 3, rubber base 4, anchor bar 5, aluminum mold 100, steel mesh 200. DETAILED DESCRIPTION

[0019] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0020] As Figures 1 to 3 As shown, a pre-buried sleeve fixing device includes a sleeve 1 and a compression spring 2. A rubber pad 3 is installed on the inner side of both ends of the sleeve 1 in an interference fit manner. A rubber base 4 is installed on both ends of the compression spring 2. The compression spring 2 and the two rubber bases 4 are installed in the sleeve 1 between the two rubber pads 3. Under the restoring force of the compression spring 2, the rubber base 4 and the rubber pad 3 are clamped between the compression spring 2 and the aluminum mold 100. The rubber base 4 and the rubber pad 3 support the sleeve 1 to be clamped between two symmetrical aluminum molds 100.

[0021] The free length of the compression spring 2 is greater than the length of the sleeve, the outer diameter of the compression spring 2 is smaller than the inner diameter of the sleeve 1, and the elastic capacity of the compression spring 2 is 0.05-3.0N / mm, ensuring that the compression spring can provide a sufficiently large restoring force to sandwich the rubber base 4 and the rubber pad 3 between the compression spring 2 and the aluminum mold 100.

[0022] The diameter of the rubber base 4 is equal to the inner diameter of the sleeve 1 , and the outer side surface of the rubber base 4 is a smooth surface, which ensures that the rubber base 4 can move axially in the sleeve 1 along the sleeve 1 .

[0023] The diameter of the rubber pad 3 is equal to the diameter of the rubber base 4, which ensures that the rubber pad 3 can be stuck in the sleeve to prevent mud from flowing into the sleeve when pouring concrete.

[0024] In order to increase the friction between the rubber pad 3 and the aluminum mold, one end of the rubber pad 3 away from the rubber base 4 is a rough surface.

[0025] The thickness of the rubber base 4 is at least three times that of the rubber pad 3 , so that the axial hardness of the rubber base 4 is greater than the axial hardness of the rubber pad 3 , reducing the deformation of the rubber base 4 , so that the rubber base 4 can transmit the force of the compression spring 2 to the rubber pad 3 .

[0026] In this embodiment, the thickness of the rubber base is 20 mm, and the rear end of the rubber pad is 5 mm.

[0027] Anchor bars 5 are tied to the outer wall of the sleeve 1, and the anchor bars 5 are tied to the steel mesh 200 between the two aluminum molds 100 to prevent the concrete from falling onto the sleeve and causing displacement of the sleeve when pouring concrete.

[0028] Construction steps:

[0029] Step 1: Determine the length of the casing according to the on-site construction conditions and the thickness of the beam, use a cutting tool to cut the long steel pipe into the required length of the casing, and ensure that the length of the casing meets the requirements and the cut is smooth;

[0030] Step 2, place the rubber pad, rubber base, compression spring, rubber base, and rubber pad in the sleeve in order, and then install them together with the sleeve between the two symmetrical aluminum molds at the design position in the drawing, and use the restoring force provided by the compression spring to clamp the rubber base, rubber base and rubber pad support sleeve between the two symmetrical aluminum molds;

[0031] Step 3: After installation, use a square and a level to check the levelness of the casing and whether the installation position is accurate;

[0032] Step 4: Use wire tying to first tie anchor bars on the steel mesh, and then tie the sleeve and anchor bars firmly;

[0033] Step 5: After the concrete pouring is completed, when the aluminum film is removed, take out the rubber pad, rubber base, and compression spring for reuse.

[0034] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A pre-buried casing fixing device, characterized in that: It includes a sleeve and a compression spring. A rubber pad is installed on the inner side of each end of the sleeve in an interference fit manner. A rubber base is installed on each end of the compression spring. The compression spring and the two rubber bases are installed in the sleeve between the two rubber pads. Under the restoring force of the compression spring, the rubber base and the rubber pad are clamped between the compression spring and the aluminum mold. The rubber base and the rubber pad support sleeve is clamped between two symmetrical aluminum molds.

2. The embedded casing fixing device according to claim 1, characterized in that: The free length of the compression spring is greater than the length of the sleeve, the outer diameter of the compression spring is smaller than the inner diameter of the sleeve, and the elastic capacity of the compression spring is 0.05-3.0N / mm.

3. The embedded casing fixing device according to claim 1, characterized in that: The diameter of the rubber base is equal to the inner diameter of the sleeve, and the outer side surface of the rubber base is a smooth surface.

4. The embedded casing fixing device according to claim 1, characterized in that: The diameter of the rubber pad is equal to the diameter of the rubber base.

5. The embedded casing fixing device according to claim 1, characterized in that: One end of the rubber pad away from the rubber base is a rough surface.

6. The embedded casing fixing device according to claim 1, characterized in that: The thickness of the rubber base is at least three times the thickness of the rubber pad.

7. The embedded casing fixing device according to claim 1, characterized in that: Anchor bars are tied to the outer side wall of the sleeve, and the anchor bars are tied to the steel mesh between the two aluminum molds.

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