A steel reinforcement connection assembly for prefabricated building components

Abstract

This utility model relates to a rebar connection assembly for precast building components. Pre-embedded rebars are embedded in adjacent precast building components to be connected. The outer ends of the pre-embedded rebars have threaded sections, and anchor nuts are screwed onto the threaded sections. The connector includes front, rear, left, and right side plates that are interconnected to form a rectangular structure, and a connecting plate simultaneously connected to one end of each side plate. The front and rear side plates are symmetrically provided with U-shaped hanging grooves. The width of the U-shaped hanging groove is greater than the diameter of the threaded section but smaller than the diameter of the anchor nut. Positioning springs are symmetrically connected at the entrance of the U-shaped hanging groove. The positioning springs are elastic, and the rear ends of the two positioning springs are located within the U-shaped hanging groove to form a constricted structure with a spacing smaller than the diameter of the bolt section. The front ends of the two positioning springs extend out of the U-shaped hanging groove to form a trumpet-shaped guide structure. This assembly has the advantages of simple and convenient operation, strong load-bearing capacity, and stable and reliable connection.

Description

Technical Field

[0001] This utility model relates to a steel bar connection assembly for prefabricated building components. Background Technology

[0002] Prefabricated structures are a building form currently advocated by the state. The connection between prefabricated components in prefabricated structures is a crucial factor affecting structural safety and quality, and has therefore been a major research focus for many scholars. Current prefabricated component connections involve first hoisting the prefabricated components into place, then aligning and welding their reinforcing bars, and finally pouring grout or concrete to form the overall building structure. Traditional rebar connection methods mainly include lap splices and sleeve connections, primarily used in cast-in-place structures. However, for prefabricated components, which require both faster connection methods and sufficient connection strength, the traditional rebar connection methods used in cast-in-place structures cannot meet the demands. Utility Model Content

[0003] The purpose of this utility model is to provide a steel bar connection assembly for precast building components, which can realize the rapid and stable connection of steel bars in precast components.

[0004] The technical solution of this utility model is as follows: A precast building component steel reinforcement connection assembly includes:

[0005] Pre-embedded steel bars are pre-embedded in adjacent prefabricated building components to be connected. The outer end of the pre-embedded steel bars is provided with a threaded section, and an anchoring nut is screwed onto the threaded section.

[0006] The connector includes front, rear, left, and right side plates that are interconnected to form a rectangular structure, and a connecting plate that is simultaneously connected to one end of each side plate. The front and rear side plates are symmetrically provided with U-shaped hook grooves. The width of the U-shaped hook groove is greater than the diameter of the threaded section and less than the diameter of the anchor nut. A positioning spring is symmetrically connected at the entrance of the U-shaped hook groove. The positioning spring is elastic. The rear ends of the two positioning springs are located inside the U-shaped hook groove to form a constricted structure with a spacing smaller than the diameter of the bolt section. The front ends of the two positioning springs extend out of the U-shaped hook groove to form a trumpet-shaped guide structure.

[0007] The beneficial effects of this technical solution are as follows: During use, the prefabricated building components to be connected are hoisted into place, bringing the outer ends of their embedded reinforcing bars close together. The anchor nuts on the threaded sections are then tightened, moving them towards the outer ends of the embedded reinforcing bars. The connector is then placed between the two coaxial embedded reinforcing bars, with the threaded sections of the two bars positioned within the U-shaped mounting groove. The two anchor nuts are positioned within the cavity enclosed by the side plates of the connector. During installation, the flared guide structure formed by the positioning springs guides the reinforcing bars smoothly into the space between the springs. The elasticity of the springs allows the embedded reinforcing bars to smoothly pass through the constricted structure formed by the two springs, where they are then temporarily positioned. To ensure the connector won't easily detach from the embedded rebar after release, and also to prevent it from separating when filler is poured into it later, tighten the anchor nuts so they move towards the direction of the corresponding side plate. Once both anchor nuts are tightened, the connector bears tension between the two embedded rebars, forming a rigid connection structure capable of withstanding axial tension and radial bending stress. Furthermore, filler can be added later. After the filler solidifies, the positioning spring loses its deformation space and transforms from an elastic element into a rigid one. The resulting constricted structure firmly limits the embedded rebar, assisting in bearing some bending stress and thus improving the overall load-bearing capacity of the connector. As can be seen from the above working principle and process, compared with the existing technology, this solution has the advantages of simple and convenient operation, the connecting parts can be temporarily locked by the positioning spring to prevent them from falling off, the positioning spring can be converted into a rigid part after the filling is poured to achieve auxiliary bearing and increase the overall strength, and the anchor nut can achieve rigid bearing in a tensioned state after tightening, with strong bearing capacity.

[0008] Based on the above solution, the following improvements are made: the cross-sectional shape of the positioning spring is "m" shaped to ensure strong strength within the longer U-shaped mounting groove.

[0009] Based on the above solution, the following improvements are made: the width of the positioning spring is not less than the thickness of the front and rear side plates. This is to increase the positioning length for the embedded reinforcing bars, thereby increasing the subsequent load-bearing length and resulting in higher connection strength.

[0010] Based on the above solution, the following improvements are made: the positioning spring is made of steel.

[0011] Based on the above solution, the following improvements are made: recessed clearance grooves are provided on the left and right side plates, facing the connecting plate. The clearance grooves facilitate the tightening and loosening of the anchor nuts.

[0012] Based on the above scheme, the following improvement is made: the clearance groove is an arc-shaped groove.

[0013] Based on the above scheme, further improvements are made as follows: a gel-like filler is poured between the pre-embedded steel bars, connectors and positioning springs, and the gel-like filler solidifies into a solid.

[0014] Based on the above scheme, the following improvements are made: the gel-like filler is a grouting material. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the connection structure of a specific embodiment of the steel bar connection assembly for prefabricated building components according to this utility model;

[0016] Figure 2 A 3D view of the connector (positioning springs are not shown);

[0017] Figure 3 A schematic diagram illustrating the working principle of a positioning snap ring;

[0018] In the diagram: 1-Embedded steel bar, 11-Threaded section, 12-Anchor nut, 2-Connector, 21-Front side plate, 211-U-shaped hanging groove, 212-Positioning snap ring, 22-Rear side plate, 23-Left side plate, 231-Allowing groove, 24-Right side plate, 25-Connecting plate, 26-Grouting material. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model; that is, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The components of the embodiments of the present utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0021] It should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0022] The features and performance of this utility model will be further described in detail below with reference to the embodiments.

[0023] A specific embodiment of the steel reinforcement connection assembly for prefabricated building components of this utility model is as follows: Figure 1-3 As shown, Figure 1 The diagram shows the state of two pre-embedded steel bars 1 to be connected by connector 2 and filler is poured (positioning spring 212 is not shown in the figure and the anchor bolt is pulled out to show the details. In fact, before the filler is poured, the anchor bolt is pressed against the corresponding side plate). Figure 3 The structural diagram showing the positional relationship between the pre-embedded steel bar 1, the U-shaped hanging groove 211 and the positioning tension spring is also the core working principle diagram.

[0024] Specifically, the precast building component steel reinforcement connection assembly includes embedded steel bars 1, connectors 2, and post-cast grout 26 (gel filler).

[0025] Among them, the pre-embedded steel bars 1 are respectively pre-embedded in the adjacent prefabricated building components to be connected, and the outer end of the pre-embedded steel bars 1 is provided with a threaded section 11, and an anchoring nut 12 is screwed on the threaded section 11.

[0026] The connector 2 includes front, rear, left, and right side plates (23 and 24) (reference numerals 21-24) that are interconnected to form a rectangular structure, and a connecting plate 25 connected to one end of each side plate. The front and rear side plates (21 and 22) are symmetrically provided with U-shaped mounting grooves 211. The width of the U-shaped mounting groove 211 is greater than the diameter of the threaded section 11 and smaller than the diameter of the anchor nut 12. Positioning springs 212 are symmetrically connected at the entrance of the U-shaped mounting groove 211. The positioning springs 212 are elastic. The rear ends of the two positioning springs 212 are located within the U-shaped mounting groove 211 to form a constricted structure with a spacing smaller than the diameter of the bolt section. The front ends of the two positioning springs 212 extend outside the U-shaped mounting groove 211 to form a flared guide structure. The cross-sectional shape of the positioning springs 212 is "m"-shaped, ensuring strong strength within the longer U-shaped mounting groove 211. The width of the positioning spring 212 is not less than the thickness of the front and rear side plates (21 and 22). This is to increase the positioning length of the embedded steel bar 1, that is, to increase the subsequent load-bearing length, thus increasing the connection strength. The positioning spring 212 is made of steel. The left and right side plates (23 and 24) are provided with recessed relief grooves 231 facing the connecting plate 25. The relief grooves 231 facilitate the tightening of the anchor nut 12. The relief grooves 231 are arc-shaped grooves. A gel-like filler is also included, which is poured between the embedded steel bar 1, the connector 2, and the positioning spring 212. The gel-like filler solidifies into a solid, and is grout 26.

[0027] In use, the prefabricated building components to be connected are hoisted into place, bringing the outer ends of the embedded reinforcing bars 1 close together. The anchor nuts 12 on the threaded section 11 are then tightened, moving the anchor nuts 12 toward the outer ends of the embedded reinforcing bars 1. The connector 2 is then connected between the two coaxial embedded reinforcing bars 1, with the threaded sections 11 of the two embedded reinforcing bars 1 positioned within the U-shaped mounting groove 211. The two anchor nuts 12 are positioned within the cavity enclosed by the side plates of the connector 2. During the installation of the connector 2, the flared guide structure formed by the positioning springs 212 guides the reinforcing bars smoothly into the space between the positioning springs 212. The elasticity of the positioning springs 212 allows the embedded reinforcing bars 1 to smoothly pass through the constricted structure formed by the two positioning springs 212, and is subsequently temporarily positioned by the constricted structure. To ensure that connector 2 does not easily detach from the embedded steel bar 1 after release, and also to prevent connector 2 from detaching from the embedded steel bar 1 when filler is poured into connector 2 later, tighten anchor nuts 12 so that anchor nuts 12 move in the direction of pressing the corresponding side plate. After both anchor nuts 12 are tightened, connector 2 bears tensile force between the two embedded steel bars 1 to form a rigid connection structure so as to withstand axial tensile force and radial bending stress. Moreover, filler can be filled into connector 2 later. When the filler solidifies, the positioning spring 212 no longer has deformation space and the positioning spring 212 will change from an elastic element to a rigid element. The resulting constriction structure can firmly limit the embedded steel bar 1 and help bear part of the bending stress, thereby improving the overall load-bearing capacity of connector 2. As can be seen from the above working principle and process, compared with the existing technology, this solution has the advantages of simple and convenient operation, the connection 2 can be temporarily locked by the positioning spring 212 to prevent it from falling off, the positioning spring 212 can be converted into a rigid part after the filling is poured to achieve auxiliary bearing and increase the overall strength, and the anchor nut 12 can achieve rigid bearing in the tension state after tightening, with strong bearing capacity.

[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. The patent protection scope of the present utility model shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present utility model shall also be included within the protection scope of the present utility model.

Claims

1. A building prefabricated component reinforcing bar connecting assembly, characterized in that, include: Pre-embedded steel bars are pre-embedded in adjacent prefabricated building components to be connected. The outer end of the pre-embedded steel bars is provided with a threaded section, and an anchoring nut is screwed onto the threaded section. The connector includes front, rear, left, and right side plates that are interconnected to form a rectangular structure, and a connecting plate that is simultaneously connected to one end of each side plate. The front and rear side plates are symmetrically provided with U-shaped hook grooves. The width of the U-shaped hook groove is greater than the diameter of the threaded section and less than the diameter of the anchor nut. A positioning spring is symmetrically connected at the entrance of the U-shaped hook groove. The positioning spring is elastic. The rear ends of the two positioning springs are located inside the U-shaped hook groove to form a constricted structure with a spacing smaller than the diameter of the bolt section. The front ends of the two positioning springs extend out of the U-shaped hook groove to form a trumpet-shaped guide structure.

2. A reinforcing bar coupling assembly for use in the construction of prefabricated building components according to claim 1 wherein, The cross-sectional shape of the positioning snap ring is "m".

3. A reinforcing bar coupling assembly for use in a prefabricated construction element according to claim 1, characterised in that The width of the positioning snap ring is not less than the thickness of the front and rear side plates.

4. A reinforcing bar coupling assembly for use in a prefabricated construction element according to claim 1, characterized in that The positioning spring is made of steel.

5. A reinforcing bar coupling assembly for use in a prefabricated construction element according to claim 1, characterized in that The left and right side plates are provided with recessed clearance grooves facing the connecting plate.

6. A reinforcing bar coupling assembly for prefabricated building components according to claim 5 wherein, The clearance groove is an arc-shaped groove.

7. A reinforcing bar coupling assembly for prefabricated building components according to claim 1, wherein This includes a gel-like filler that is poured between the pre-embedded reinforcing bars, connectors, and positioning springs. The gel-like filler solidifies after setting.

8. A reinforcing bar coupling assembly for prefabricated building components according to claim 7, wherein The gel-like filler is a grouting material.

Images