Bevel flattening and binding sleeve for fabricated building

By using angled and flattened sleeves in prefabricated buildings, stair handrails or balcony railings can be installed without drilling, solving the problems of building damage and installation misalignment caused by traditional methods, and improving installation accuracy and aesthetics.

CN224063828UActive Publication Date: 2026-03-31JIANGXI ARTISAN TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-27
Publication Date
2026-03-31

AI Technical Summary

Technical Problem

In traditional prefabricated buildings, the use of impact drills to drill holes during the installation of stair handrails or balcony railings damages the building surface and the misalignment of the holes affects the aesthetics.

Method used

A folded and flattened sleeve is used. The connecting sleeve is embedded in the concrete staircase or balcony handrail. The connecting rod and the installation rod are used to achieve a fixation without drilling. After the connecting sleeve is exposed on the concrete surface, it is welded to the handrail or railing.

Benefits of technology

This avoids damage to the building surface and hole misalignment caused by impact drilling, ensuring installation accuracy and improving the building's aesthetics.

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Abstract

The utility model relates to the technical field of assembly type buildings, and discloses a folding angle flattening binding sleeve for an assembly type building, which comprises a connecting cylinder, a turning block fixedly mounted at the bottom of the connecting cylinder, a bottom plate fixed on the turning block, and a pull rod fixedly connected to the outer side of the bottom plate; the connecting rod is mounted at the top of the connecting cylinder in a threaded mode, and a mounting rod is arranged at the top of the connecting rod; the turning block at the bottom of the connecting cylinder and the bottom plate are pre-buried in the position of a handrail of a concrete stair or a balcony of an assembly type building, the connecting cylinder is exposed out of a concrete surface, after concrete is solidified, the connecting rod is installed in the installation groove in a threaded mode to be fixedly connected with the connecting cylinder, and then the handrail or a handrail is welded to the connecting rod. The building does not need to be punched through the pre-buried connecting cylinder, and the problems that the building surface is damaged when a percussion drill is used for punching, the mounting position is inaccurate due to hole deviation, and the building attractiveness is affected are solved.
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Description

Technical Field

[0001] This utility model relates to the field of prefabricated building technology, specifically to a folded and flattened sleeve for prefabricated buildings. Background Technology

[0002] Prefabricated construction is a construction mode that uses prefabricated components in a factory and assembles them on site. Its core objectives are to improve construction efficiency, reduce resource waste, and optimize building quality. The building is broken down into standardized components (wall panels, beams, columns, stairs, etc.) and prefabricated in the factory, realizing the integration of design, production, and construction.

[0003] In traditional prefabricated buildings, the installation of stair handrails or balcony railings involves using an impact drill to make holes in the staircase or balcony, and then fixing expansion bolts and other installation components into the holes. However, using an impact drill can damage the building surface, and misaligned holes can lead to inaccurate installation positions, affecting the building's aesthetics. Utility Model Content

[0004] The purpose of this utility model is to provide a folded and flattened sleeve for prefabricated buildings, in order to solve the problem that when installing stair handrails or balcony railings in traditional prefabricated buildings, it is necessary to use an impact drill to drill holes in the stairs or balconies and then fix expansion bolts and other installation parts in the holes. However, drilling holes with an impact drill will damage the building surface and the misalignment of the holes will lead to inaccurate installation positions, affecting the aesthetics of the building.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a folded and flattened sleeve for prefabricated buildings, comprising a connecting sleeve, and further comprising:

[0006] A turning block is fixedly installed at the bottom of the connecting cylinder, and a base plate is fixedly fixed on the turning block. A pull rod is fixedly connected to the outer side of the base plate.

[0007] A connecting rod is threaded onto the top of the connecting cylinder, and a mounting rod is provided on the top of the connecting rod.

[0008] Preferably, the bottom plate has grooves at both the top and bottom, and a crossbar is welded to the outside.

[0009] Preferably, a plurality of anti-detachment blocks are welded to the outer side of the turning block.

[0010] Preferably, the top of the connecting cylinder is provided with a threaded mounting groove, and a hexagonal threaded sleeve is fixedly connected to the outside of the connecting rod.

[0011] Preferably, the top and bottom of the mounting rod are provided with threaded grooves.

[0012] Preferably, the outer side of the mounting rod is fixed with several sets of fixing strips in a ring.

[0013] Preferably, the tie rods are provided in four sets and are evenly welded to the top of the base plate.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This invention embeds the turning block and base plate at the bottom of the connecting cylinder into the position of the concrete staircase or balcony handrail of the prefabricated building. The connecting cylinder protrudes from the concrete surface. After the concrete has solidified, the connecting rod is threaded into the installation groove and connected and fixed to the connecting cylinder. Then, the handrail or railing is welded to the connecting rod. By pre-embedding the connecting cylinder, it is not necessary to drill holes on the building. This avoids the problems of impact drilling damaging the building surface and misaligned holes leading to inaccurate installation positions, which affect the building's aesthetics. Attached Figure Description

[0016] Figure 1 A schematic diagram of the angled, flattened, bundled sleeve for prefabricated buildings provided by this utility model;

[0017] Figure 2 A schematic diagram of the connecting cylinder structure provided by this utility model;

[0018] Figure 3 A schematic diagram of the connecting rod structure provided by this utility model;

[0019] Figure 4 A schematic diagram of the mounting rod structure provided by this utility model.

[0020] In the diagram: 1. Connecting cylinder; 2. Turning block; 3. Base plate; 4. Tie rod; 5. Anti-detachment block; 6. Groove; 7. Crossbar; 8. Connecting rod; 9. Hexagonal threaded sleeve; 10. Mounting rod; 11. Threaded groove; 12. Fixing strip; 13. Threaded mounting groove. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4As shown, a folded and flattened sleeve for prefabricated buildings includes a connecting cylinder 1 and further includes: a turning block 2, which is fixedly installed at the bottom of the connecting cylinder 1, and a base plate 3 is fixed on the turning block 2. The base plate 3 and the turning block 2 are formed by flattening and bending the lower part of the connecting cylinder 1 to form an L-shape. A tie rod 4 is fixedly connected to the outside of the base plate 3. The tie rod 4 is provided in four sets and is evenly welded to the top of the base plate 3. The tie rod 4 can increase the connection strength between the base plate 3 and the concrete, thereby improving the stability of the connecting cylinder 1; a connecting rod 8, which is threadedly installed on the top of the connecting cylinder 1. An installation rod 10 is provided on the top of the connecting rod 8. The connecting rod 8 and the installation rod 10 are used to connect the connecting cylinder 1 to a railing or handrail.

[0023] It should be noted that: the turning block 2 and the base plate 3 at the bottom of the connecting cylinder 1 are pre-embedded in the position of the concrete staircase or balcony handrail of the prefabricated building, the connecting cylinder 1 is exposed on the concrete surface, the connecting rod 8 is installed on the connecting cylinder 1, the handrail is welded to the connecting rod 8, or the handrail is connected to the connecting rod 8 by using the installation rod 10.

[0024] The bottom plate 3 has grooves 6 at both the top and bottom, and crossbars 7 are welded to the outside. The grooves 6 and crossbars 7 can increase the contact area between the bottom plate 3 and the concrete, improve the adhesion between the bottom plate 3 and the concrete, and thus improve the firmness of the bottom plate 3. Several anti-detachment blocks 5 are welded to the outside of the turning block 2. The anti-detachment blocks 5 can increase the adhesion between the turning block 2 and the concrete, and improve the firmness of the turning block 2.

[0025] The top of the connecting cylinder 1 is provided with a threaded mounting groove 13. A hexagonal threaded sleeve 9 is fixedly connected to the outside of the connecting rod 8. The connecting rod 8 is threaded into the threaded mounting groove 13 and connected and fixed to the connecting cylinder 1. The top and bottom of the mounting rod 10 are provided with threaded grooves 11. The threaded groove at the bottom of the mounting rod 10 is threadedly connected to the top of the connecting rod 8, and the mounting rod 10 is fixedly installed on the top of the connecting rod 8. The threaded groove 11 at the top of the mounting rod 10 can be connected to a handrail or guardrail with a threaded hole. Several sets of fixing strips 12 are fixedly fixed in a ring on the outside of the mounting rod 10. The fixing strips 12 increase the friction on the outside of the mounting rod 10, making it easier for users to install or remove the mounting rod 10.

[0026] Working principle: When producing prefabricated buildings, the turning block 2 and the base plate 3 at the bottom of the connecting cylinder 1 are pre-embedded in the position of the concrete staircase or balcony handrail of the prefabricated building. The connecting cylinder 1 is exposed on the concrete surface. After the concrete has solidified, the connecting rod 8 is threaded into the threaded mounting groove 13 and connected and fixed to the connecting cylinder 1. Then, the handrail or railing is welded to the connecting rod 8. Alternatively, the mounting rod 10 is threaded to the top of the connecting rod 8, and the handrail or railing with screw holes is threaded onto the mounting rod 10 to complete the installation. The length and size of the mounting rod 10 need to be designed according to the specifications of the handrail or railing.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only 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.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mitre squaring and splicing sleeve for use in fabricated construction comprising a connecting barrel (1) characterised in that, Also include: The turning block (2) is fixedly installed at the bottom of the connecting cylinder (1), a bottom plate (3) is fixedly installed on the turning block (2), and the outer side of the bottom plate (3) is fixedly connected with a pull rod (4); The connecting rod (8) is screw installed at the top of the connecting cylinder (1), and the top of the connecting rod (8) is provided with a mounting rod (10).

2. A mitre squidge sleeve for use in fabricated construction according to claim 1 characterised in that: The top and bottom of the bottom plate (3) are provided with grooves (6), and the outer side is welded with a cross bar (7).

3. A mitre crimped splicing sleeve for use in fabricated construction according to claim 1, characterised in that: The outer side of the turning block (2) is welded with a plurality of anti-off blocks (5).

4. A mitre squidge sleeve for use in fabricated construction according to claim 1 characterised in that: The top of the connecting cylinder (1) is provided with a threaded mounting groove (13), and the outer side of the connecting rod (8) is fixedly connected with a hexagonal sleeve (9).

5. A mitre crimped splicing sleeve for use in fabricated construction according to claim 1, characterised in that: The top and bottom of the mounting rod (10) are provided with threaded grooves (11).

6. A mitre squash sleeve for use in fabricated construction according to claim 1, characterised in that: The outer side of the mounting rod (10) is annularly fixed with a plurality of groups of fixed strips (12).

7. A mitre crimped spliced sleeve for use in fabricated construction according to claim 1, characterised in that: The pull rod (4) is provided with four groups and is uniformly welded on the top of the bottom plate (3).