Grout sleeve

Abstract

The utility model discloses a kind of grouting material sleeves, including cylinder, the cylinder is cylindrical, the cylinder has inner wall and outer wall, the inner wall of the cylinder is provided with protrusion, the outer currency of the cylinder is provided with inner recess, the cross section of the protrusion is semicircular, the cross section of the inner recess is semicircular, the protrusion is helix, the inner recess is helix, and the helix on inner wall coincides with the helix on outer wall.The grouting material sleeve has the following beneficial effects: the inner wall and outer wall of the cylinder are all engaged and fixed together with grout, the bonding strength between the cylinder and grout is improved, and the connection strength between the two prefabricated parts is improved.

Description

Technical Field

[0001] This utility model relates to the field of building construction, and in particular to a grouting material sleeve. Background Technology

[0002] Grouting sleeves are a commonly used auxiliary connector in prefabricated buildings. The structure of current grouting sleeves can be roughly referred to in the attached figure of patent publication document CN206110492U. The general structure is a cylinder with square protrusions inside. Because the outer wall of this type of grouting sleeve is smooth, the bonding strength between it and the grout is not high. Utility Model Content

[0003] To address the aforementioned problems, this utility model proposes a grout sleeve in which the inner and outer walls of the sleeve are completely interlocked and fixed with the grout, thereby improving the bonding strength between the sleeve and the grout and enhancing the connection strength between the two precast components.

[0004] The technical solution adopted by this utility model is as follows:

[0005] A grouting sleeve includes a cylindrical body. The cylindrical body has an inner wall and an outer wall. A protrusion is provided on the inner wall of the cylindrical body, and a concave shape is provided on the outer wall of the cylindrical body. The cross-section of the protrusion is semi-circular, the cross-section of the concave shape is semi-circular, the protrusion is helical, the concave shape is helical, and the helical lines on the inner wall coincide with the helical lines on the outer wall.

[0006] In this type of grout sleeve, the reinforcing bars on the precast parts at both ends are first inserted into the cylinder. The threads on the reinforcing bars can fit tightly against the protrusions on the inner wall. When the grout is poured into the cylinder and there is also grout distributed on the outside of the cylinder, and after the grout solidifies, the presence of the protrusions can act as shear keys and increase the interlocking force between the cylinder and the grout. At the same time, since there is a concave part on the outer wall of the cylinder, a part of the grout will solidify after being embedded in the concave part, so that the inner wall and outer wall of the cylinder are completely interlocked and fixed with the grout, which improves the bonding strength between the cylinder and the grout and improves the connection strength between the two precast parts.

[0007] In summary, in this type of grout sleeve, the inner and outer walls of the cylinder are completely interlocked and fixed with the grout, which improves the bonding strength between the cylinder and the grout and the connection strength between the two precast components.

[0008] Optionally, the height of the protrusion relative to the inner wall is not less than 2 mm.

[0009] Optionally, the height of the protrusion is equal to the depth of the concavity.

[0010] Optionally, the wall thickness of the cylinder is not less than 3.5 mm.

[0011] Optionally, the spacing between the protrusions is not less than 20 mm.

[0012] Optionally, the spacing of the concave sections is equal to the spacing of the convex sections.

[0013] Optionally, the cylinder is made of metal.

[0014] Optionally, the cylinder is made of carbon steel.

[0015] The beneficial effects of this utility model are: the inner and outer walls of the cylinder are completely interlocked and fixed together with the slurry, which improves the bonding strength between the cylinder and the slurry and improves the connection strength between the two precast parts. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0017] Figure 1 This is a simplified structural diagram of the grouting sleeve.

[0018] The figures are labeled as follows: 1, cylinder; 101, outer wall; 102, inner wall; 103, concave; 104, convex. Detailed Implementation

[0019] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0020] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0021] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0022] As attached Figure 1 As shown, a grouting sleeve includes a cylinder 1, which is cylindrical and has an inner wall 102 and an outer wall 101. A protrusion 104 is provided on the inner wall 102 of the cylinder 1, and an indentation 103 is provided on the outer wall 101. The cross-section of the protrusion 104 is semi-circular, the cross-section of the indentation 103 is semi-circular, the protrusion 104 is spiral, the indentation 103 is spiral, and the spiral on the inner wall 102 coincides with the spiral on the outer wall 101.

[0023] In this type of grout sleeve, the reinforcing bars on the precast parts at both ends are first inserted into the cylinder 1. The threads on the reinforcing bars can be tightly attached to the protrusions 104 on the inner wall 102. When the grout is poured into the cylinder 1 and the outside of the cylinder 1 is also covered with grout, and after the grout has solidified, the presence of the protrusions 104 can act as shear keys and increase the interlocking force between the grout and the cylinder. At the same time, since the outer wall 101 of the cylinder 1 has a recess 103, a portion of the grout will solidify after being embedded in the recess 103. This makes the inner wall 102 and the outer wall 101 of the cylinder 1 completely interlocked and fixed with the grout, which improves the bonding strength between the cylinder 1 and the grout and improves the connection strength between the two precast parts.

[0024] In summary, in this type of grout sleeve, the inner wall 102 and outer wall 101 of the cylinder 1 are completely interlocked and fixed with the grout, which improves the bonding strength between the cylinder 1 and the grout and improves the connection strength between the two precast components.

[0025] As attached Figure 1 As shown, the height of the protrusion 104 relative to the inner wall 102 is not less than 2 mm.

[0026] As attached Figure 1 As shown, the height of the protrusion 104 is equal to the depth of the concave 103.

[0027] Specifically, the protrusion 104 and the concave 103 are formed by rolling the cylinder 1.

[0028] As attached Figure 1 As shown, the wall thickness of cylinder 1 is not less than 3.5 mm.

[0029] As attached Figure 1 As shown, the spacing between protrusions 104 is not less than 20mm.

[0030] As attached Figure 1 As shown, the spacing between the concave 103 and the spacing between the convex 104 are equal.

[0031] As attached Figure 1 As shown, cylinder 1 is made of metal.

[0032] As attached Figure 1 As shown, cylinder 1 is made of carbon steel.

[0033] During grouting, the grout can be poured directly from both ends of this type of sleeve, which can significantly increase the amount of grout filling inside the sleeve and improve the compactness after grouting.

[0034] The above-described embodiments only illustrate some aspects of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A grouting material sleeve, comprising a cylindrical body having an inner wall and an outer wall, characterized in that, The inner wall of the cylinder has a protrusion, and the outer wall of the cylinder has a concave shape. The cross-section of the protrusion is semi-circular, the cross-section of the concave shape is semi-circular, the protrusion is spiral-shaped, the concave shape is spiral-shaped, and the spiral on the inner wall coincides with the spiral on the outer wall.

2. The grouting material sleeve according to claim 1, characterized in that, The height of the protrusion relative to the inner wall is not less than 2mm.

3. A grouting material sleeve according to claim 2, characterized in that, The height of the protrusion is equal to the depth of the concavity.

4. A grouting material sleeve according to claim 2, characterized in that, The wall thickness of the cylinder is not less than 3.5 mm.

5. A grouting material sleeve according to claim 1, characterized in that, The spacing between the protrusions is not less than 20mm.

6. A grouting material sleeve according to claim 5, characterized in that, The spacing between the concave sections is equal to the spacing between the convex sections.

7. A grouting material sleeve according to claim 1, characterized in that, The cylinder is made of metal.

8. A grouting material sleeve according to claim 7, characterized in that, The cylinder is made of carbon steel.

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