Fabricated component tensioning embedded sleeve

Abstract

The utility model relates to the technical field of assembly type building construction, in particular to an assembly type component tensioning embedded sleeve which comprises a sleeve body, a plurality of anti-pulling rings are distributed on the outer wall of the sleeve body in the axial direction, the anti-pulling rings are in a horn mouth shape, the section of each anti-pulling ring is triangular, and the bottom edge of each triangle is integrally connected with the outer wall of the sleeve body. An anti-pulling block is arranged at one end of the sleeve body, an opening is formed in the other end of the sleeve body, the opening end of the horn mouth shape faces one side of the opening of the sleeve body, and internal threads are arranged on the inner wall of the sleeve body. The anti-pulling capacity of the pre-embedded sleeve can be remarkably improved, the possibility that the pre-embedded sleeve is pulled out of a component is avoided, then the connection tightness of the assembly type pre-pulling structure is effectively guaranteed, and the structure safety is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of prefabricated building construction technology, specifically to a prefabricated tensioning sleeve for prefabricated components. Background Technology

[0002] The secure connection between prefabricated components is crucial to the overall strength of the building structure, such as... Figure 5 As shown, a common method for connecting prefabricated components by prestressing tension is provided. In this method, one end of component one is provided with a pre-embedded sleeve. The open end of the pre-embedded sleeve is flush with the surface of component one and is screwed with a pre-tension rod. The pre-tension rod passes through the reserved holes of multiple components two. Finally, component one and multiple components two are pulled together by an anchoring device.

[0003] However, the existing embedded sleeve structure is simple, with only simple pull-out grooves on the surface. Although the rear end of the embedded sleeve is provided with a through hole for inserting pull-out reinforcing bars, there are still cases in actual use where the embedded sleeve is pulled out of the component. In order to ensure the overall connection strength of the structure, it is necessary to improve the existing embedded sleeve. Utility Model Content

[0004] This invention discloses a pre-embedded sleeve for tensioning prefabricated components, which aims to improve the pull-out strength of the pre-embedded sleeve.

[0005] To achieve the above objectives, the technical solution of this invention is as follows:

[0006] A prefabricated tensioning sleeve for prefabricated components includes a sleeve body. Several anti-pull-out rings are distributed axially on the outer wall of the sleeve body. The anti-pull-out rings are funnel-shaped with a triangular cross-section. The base of the triangular ring is integrally connected to the outer wall of the sleeve body. One end of the sleeve body is provided with an anti-pull-out block, and the other end is open. The funnel-shaped open end faces the open side of the sleeve body. An internal thread is provided on the inner wall of the sleeve body.

[0007] Preferably, the outer diameter of the opening end of the pull-out ring decreases sequentially from the end with the pull-out block to the end with the opening, and the sleeve body as a whole forms a conical structure.

[0008] Preferably, the pull-out block has a cubic structure, and both its length and width are larger than the outer diameter of the opening of the largest pull-out ring.

[0009] Preferably, the pull-out block has a through hole in a direction perpendicular to the axis of the sleeve body, and a pull-out reinforcing bar is inserted through the through hole.

[0010] Preferably, each of the four side walls of the pull-out block is integrally connected with a blocking block with a right-angled triangular cross-section. One right-angled side of the blocking block is integrally connected to the side wall of the pull-out block, and the other right-angled side faces the open side of the sleeve body.

[0011] Preferably, the end of the pull-out reinforcing bar away from the opening of the sleeve body abuts against the outer surface of the blocking block.

[0012] Preferably, the two ends of the pull-out reinforcing bar are bent.

[0013] The beneficial effects of this new type of prefabricated component tensioning embedded sleeve are as follows:

[0014] This new type of sleeve can significantly improve the pull-out resistance of the pre-embedded sleeve, avoid the possibility of it being pulled out from the component, and thus effectively ensure the tightness of the pre-stressed structure connection and ensure structural safety. Attached Figure Description

[0015] To more clearly illustrate the technical solution of this invention, the accompanying drawings used in the embodiments are briefly described below, which constitute a part of the specification and are used together with the embodiments of this invention to explain this invention, but do not constitute a limitation on this invention.

[0016] Figure 1 A front sectional view of the present invention;

[0017] Figure 2 A schematic diagram of the front view of this novel structure;

[0018] Figure 3 A top view of the structure of this novel structure (with pull-out reinforcing bars removed);

[0019] Figure 4 A side view of the structure of this novel invention;

[0020] Figure 5 1. Schematic diagram of the construction principle of existing embedded sleeves.

[0021] 1. Component 1; 2. Existing embedded sleeve; 3. Pre-tension rod; 4. Anchor; 5. Component 2; 211. Sleeve body; 212. Internal thread; 213. Pull-out ring; 214. Pull-out block; 215. Pull-out reinforcement; 216. Blocking block; 217. Through-reinforcement hole; 218. Inner cavity of sleeve body. Detailed Implementation

[0022] The technical solutions of this invention will now be clearly and completely described with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0023] The following embodiments can be understood as explaining a partial structure of the present invention individually, or as explaining a larger structure of the present invention through a combination of multiple embodiments.

[0024] Example 1

[0025] A prefabricated component tensioning embedded sleeve, such as Figure 1-4 As shown, the sleeve body 211 is provided. Several anti-pull-out rings 213 are distributed axially on the outer wall of the sleeve body 211. The anti-pull-out rings 213 are funnel-shaped and have a triangular cross-section. The base of the triangle is integrally connected to the outer wall of the sleeve body 211. One end of the sleeve body 211 is provided with an anti-pull-out block 214, and the other end is open. The funnel-shaped opening end faces the open side of the sleeve body 211. An internal thread 212 is provided on the inner wall of the sleeve body 211.

[0026] In this embodiment, the purpose of setting the funnel-shaped anti-pull-out rings is to maximize the contact area with the concrete inside component one, thereby improving the pull-out resistance. Concrete is filled between adjacent anti-pull-out rings and between the anti-pull-out rings and the anti-pull-out blocks, ensuring a tight bond between the novel design and the concrete structure. Both the anti-pull-out rings and the anti-pull-out blocks contribute to pull-out resistance. Compared to existing technologies that use anti-pull-out grooves (such as threads) on the outer wall of the sleeve, the funnel-shaped structure of this novel design significantly increases the interaction force with the concrete inside component one.

[0027] Example 2

[0028] like Figure 1-3 As shown, the outer diameter of the open end of the anti-pull-out ring 213 decreases sequentially from the end with the anti-pull-out block 214 to the end with the open end, and the sleeve body 211 as a whole forms a conical structure.

[0029] In this embodiment, the purpose of this arrangement is to avoid the failure of the rear pull-out rings due to the failure of local concrete on the open side when a strong load is applied, which would prevent the pull-out rings from providing gripping force (this refers to the case where the outer diameter of the pull-out rings is the same). Since the outer diameter of the pull-out rings increases sequentially from front to back, even if the front part of the concrete is loose, the pull-out rings on the rear side will not lose their function. In addition, the overall conical structure of the sleeve body 211 also makes the pull-out effect of the sleeve body better.

[0030] Example 3

[0031] like Figure 1-4 As shown, the anti-pull block 214 has a cubic structure, and the length and width of the anti-pull block 214 are both larger than the outer diameter of the opening of the largest size anti-pull ring 213.

[0032] like Figure 3 As shown, the pull-out block 214 has a through hole 217 in a direction perpendicular to the axis of the sleeve body 211, and a pull-out reinforcing bar 215 passes through the through hole 217.

[0033] In this embodiment, the pull-out block is also permeated with pull-out reinforcing steel bars 215, which further improves the pull-out resistance effect.

[0034] Example 4

[0035] like Figure 1-4 As shown, each of the four side walls of the pull-out block 214 is integrally connected with a blocking block 216 with a right-angled triangular cross section. One right-angled side of the blocking block 216 is integrally connected to the side wall of the pull-out block 214, and the other right-angled side faces the open side of the sleeve body 211.

[0036] like Figure 1 As shown, the end of the pull-out reinforcing bar 215 away from the opening of the sleeve body 211 abuts against the outer surface of the blocking block 216.

[0037] The two ends of the pull-out steel bar 215 are bent (not shown in the figure) to further increase the gripping force with the concrete.

[0038] In this embodiment, considering that the pull-out reinforcing bar may bend under strong tensile force, a blocking block is set to block the part of the pull-out reinforcing bar close to the pull-out block, thereby improving the bending resistance of the pull-out reinforcing bar. At the same time, the blocking block itself also plays a good role in resisting pull-out.

[0039] The working principle of this new type:

[0040] For reference Figure 5 As shown, after replacing the existing pre-embedded sleeve with this new type, under the action of the anti-pull-out ring, the sleeve body with an overall conical structure, the anti-pull-out block, the blocking block, and the anti-pull-out steel bar, this new type can fully meet the needs of the pre-tension connection of the existing prefabricated structure, avoid detachment from component 1, and ensure the safety of the structure.

[0041] This new type of component can be prefabricated in the factory using a mold. When casting component one, the open end of this new type of component is attached to the inner wall of the template and fixed in place. Once component one is cast and formed, it is ready for use.

Claims

1. A prefabricated tensioning sleeve for assembled components, characterized in that: it includes a sleeve body, wherein a plurality of anti-pull-out rings are distributed axially on the outer wall of the sleeve body, the anti-pull-out rings are funnel-shaped, the cross-section of the anti-pull-out rings is triangular, the base of the triangle is integrally connected to the outer wall of the sleeve body, one end of the sleeve body is provided with an anti-pull-out block, and the other end is open, the funnel-shaped open end faces the open side of the sleeve body, and an internal thread is provided on the inner wall of the sleeve body.

2. The pre-embedded sleeve for tensioning prefabricated components as described in claim 1, characterized in that: The outer diameter of the opening end of the anti-pull-out ring decreases sequentially from the end with the anti-pull-out block to the end with the opening, and the entire sleeve body forms a conical structure.

3. The pre-embedded sleeve for tensioning prefabricated components as described in claim 2, characterized in that: The pull-out block has a cubic structure, and both its length and width are larger than the outer diameter of the opening of the largest pull-out ring.

4. The prefabricated tensioning sleeve for prefabricated components as described in claim 3, characterized in that: a through hole is provided on the anti-pull-out block in a direction perpendicular to the axis of the sleeve body, and an anti-pull-out reinforcing bar is provided in the through hole.

5. The pre-embedded sleeve for tensioning prefabricated components as described in claim 4, characterized in that: Each of the four side walls of the pull-out block is integrally connected with a blocking block with a right-angled triangular cross section. One right-angled side of the blocking block is integrally connected to the side wall of the pull-out block, and the other right-angled side faces the open side of the sleeve body.

6. The pre-embedded sleeve for tensioning prefabricated components as described in claim 5, characterized in that: The end of the pull-out reinforcing bar away from the opening of the sleeve body abuts against the outer surface of the blocking block.

7. The pre-embedded sleeve for tensioning prefabricated components as described in claim 6, characterized in that: The two ends of the pull-out reinforcing steel are bent.

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