Prefabricated building formwork column installation construction device
By using the gripper and insert design of the prefabricated building formwork column installation device, the steel bars are automatically aligned, solving the problem of low steel bar alignment efficiency in existing technologies and achieving efficient and safe formwork column installation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- MINMETALS 23RD METALLURGICAL CONSTR GRP SECOND ENG CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-08-04
AI Technical Summary
In the existing precast formwork column installation process, the efficiency of rebar alignment is low and there are safety hazards. It is difficult to achieve alignment between the sleeve and the ground rebar by manual intervention.
The prefabricated building formwork column installation device utilizes the clamps and inserts inside the connecting cylinder to automatically align the reinforcing bars and fix them through internal threads, reducing manual intervention.
It improved the efficiency of rebar alignment, ensured construction safety, reduced the burden on workers, and improved the smoothness of installation work.
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Figure CN224591670U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building formwork installation technology, specifically to a prefabricated building formwork column installation construction device. Background Technology
[0002] In the field of concrete construction, the precast formwork column installation method is an important construction method in prefabricated concrete buildings and is widely used in various construction projects. This installation method not only improves construction efficiency but also ensures construction quality, laying the foundation for the long-term stable use of the building.
[0003] Currently, during the initial installation of precast formwork columns, workers need to use a crane to lift the column and move it to a pre-designated docking area on the ground. The crane then lowers the column. Both the docking area and the bottom of the column have reinforcing bars for connection, and both sets of reinforcing bars are threaded at the ends. The existing method of connecting the two reinforcing bars involves manual intervention, coordinated with the crane's descent, to correct and align any misaligned bars. Then, threaded sleeves are used to initially tighten and fix the two reinforcing bars. This manual intervention method is not only inefficient in alignment, making it difficult to align the bottom of the sleeve with the ground-level reinforcing bars, but also poses safety hazards due to workers spending extended periods around the formwork column performing the correction work.
[0004] Therefore, this utility model proposes a prefabricated building formwork column installation and construction device. Utility Model Content
[0005] The purpose of this utility model is to provide a prefabricated building formwork column installation and construction device to solve the problems mentioned in the background art. To achieve the above objective, this utility model provides the following technical solution: a prefabricated building formwork column installation and construction device, including a formwork column body, multiple reinforcing bars I at the bottom of the formwork column body, multiple reinforcing bars II on the ground, a connecting cylinder on the outer wall of the bottom end of the reinforcing bars I, multiple clamps inside the connecting cylinder, a connecting shaft inside the clamps, and both ends of the connecting shaft are fixedly connected to the connecting cylinder.
[0006] Preferably, a torsion spring is provided between the gripper and the connecting shaft. Under normal conditions, the spring force causes the gripper to rotate at a 45-degree angle to the connecting cylinder.
[0007] Preferably, the gripper includes an extension and a stop, and after the second reinforcing bar is inserted into the interior of the connecting cylinder, the extension moves toward the central area of the connecting cylinder.
[0008] Preferably, the connecting cylinder has an internal thread, and the outer walls of both reinforcing bars one and two have external threads that mesh with the internal thread of the connecting cylinder.
[0009] Preferably, the outer wall of the clamp is provided with a insert. During the process of inserting the second reinforcing bar into the interior of the connecting cylinder, the protruding part drives the insert to abut against the external thread surface of the second reinforcing bar, and the insert is elastic.
[0010] Preferably, the outer wall of the connecting cylinder is provided with multiple grooves for placing steel wire ropes that are laterally bound to the outer wall of the connecting cylinder.
[0011] Preferably, the bottom end of the connecting cylinder is curved.
[0012] This utility model has at least the following beneficial effects:
[0013] 1. In this utility model, the multiple clamps inside the connecting cylinder, through their blocking effect against the top of the second reinforcing bar, cause the first reinforcing bar to undergo a slight displacement until the center of the connecting cylinder is completely aligned with the second reinforcing bar. This allows the second reinforcing bar to smoothly enter the interior of the connecting cylinder and cooperate with and fix itself to the first reinforcing bar, thus completing the alignment of the first and second reinforcing bars. Compared to existing technologies, this eliminates the need for workers to spend extended periods aligning the reinforcing bars around the formwork column, improving alignment efficiency while also ensuring the safety of workers.
[0014] 2. In this utility model, when the second reinforcing bar is inserted into the connecting cylinder, the protruding part will cause the insert to come into contact with the external thread of the outer wall of the second reinforcing bar. During the subsequent tightening of the connecting cylinder by the workers, the insert will scrape the surface of the external thread of the second reinforcing bar as the connecting cylinder rotates, causing any cement or dust that may be adhering to its surface to fall off, making the screwing of the connecting cylinder into the second reinforcing bar smoother, reducing the burden on the workers and improving the smoothness of the installation work. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the installation scenario of the mold shell column of this utility model;
[0016] Figure 2 This utility model Figure 1 Enlarged view of the structure of region A in the middle;
[0017] Figure 3 This is a schematic diagram of the connecting cylinder structure in this utility model;
[0018] Figure 4 This is a cross-sectional view of the connecting cylinder structure in this utility model.
[0019] In the diagram: 1-Mold shell column body; 2-Reinforcing bar one; 3-Reinforcing bar two; 4-Connecting cylinder; 5-Clamping claw; 6-Connecting shaft; 7-Torsion spring; 8-Protrusion part; 9-Blocking part; 10-Insertion plate; 11-Groove. Detailed Implementation
[0020] 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.
[0021] Please see Figure 1-4 This utility model provides a technical solution: a prefabricated building formwork column installation construction device, comprising:
[0022] The formwork column body 1 has multiple reinforcing bars 2 fixedly connected to its bottom, and multiple reinforcing bars 3 on the ground. A connecting cylinder 4 is located on the outer wall of the bottom end of each reinforcing bar 2. The bottom end of the connecting cylinder 4 is curved, which facilitates the insertion of the reinforcing bars 3 into the cylinder. The connecting cylinder 4 has internal threads, and the outer walls of both reinforcing bars 2 and 3 have external threads that mesh with the internal threads of the connecting cylinder 4. After the connecting cylinder 4 is fitted onto the outer walls of both reinforcing bars 2 and 3, workers can rotate it to initially fix the multiple sets of reinforcing bars. The outer wall of the connecting cylinder 4 has multiple grooves 11 for holding steel wire ropes that are laterally bound to the outer wall of the connecting cylinder 4. After initial fixing, workers will use thinner steel wire ropes to laterally bind the multiple connecting cylinders 4. The steel wire ropes can then be placed inside the grooves 11, providing a stable binding environment and improving the subsequent installation stability of the formwork column.
[0023] Furthermore, the connecting cylinder 4 is equipped with multiple grippers 5 inside, and a connecting shaft 6 is rotatably connected to each gripper 5. Both ends of the connecting shaft 6 are fixedly connected to the connecting cylinder 4. A torsion spring 7 is provided between the grippers 5 and the connecting shaft 6, with both ends fixedly connected to the grippers 5 and the connecting shaft 6 respectively. Under normal conditions, the spring force of the torsion spring 7 rotates the grippers 5 to form a 45-degree angle with the connecting cylinder 4, ensuring that the multiple grippers 5 remain open as the rebar 2 descends. This facilitates the bottom of the grippers 5 contacting the top area of the rebar 3, ensuring the accuracy of the correction. Each gripper 5 includes an extension 8 and a stop 9. The stop 9 is located inside the gripper 5. After the rebar 3 is inserted into the connecting cylinder 4, the extension 8 moves towards the center of the connecting cylinder 4 and abuts against the outer wall of the rebar 3.
[0024] In addition, the outer wall of the gripper 5 is provided with a insert 10 and is fixedly connected to it. During the process of inserting the second reinforcing bar 3 into the interior of the connecting cylinder 4, the protruding part 8 drives the insert 10 to abut against the external thread surface of the second reinforcing bar 3. The insert 10 is elastic.
[0025] Working principle:
[0026] During installation, workers first use a crane to lift the formwork column body 1, moving it above the second reinforcing bar 3, and then lower it. During this process, the connecting cylinder 4 at the bottom of the first reinforcing bar 2 gradually approaches the end of the second reinforcing bar 3. Once the multiple clamps 5 inside the connecting cylinder 4 abut against the top of the second reinforcing bar 3, the abutting effect between the end of the second reinforcing bar 3 and the abutting part 9 of the clamps 5 causes a slight displacement of the first reinforcing bar 2 until the center of the connecting cylinder 4 is completely aligned with the second reinforcing bar 3. Finally, the second reinforcing bar 3 smoothly enters the interior of the connecting cylinder 4 and cooperates with and fixes itself to the first reinforcing bar 2, thus completing the alignment work for the first and second reinforcing bars 2 and 3. Compared to existing technologies, this method eliminates the need for workers to spend extended periods aligning around the formwork column, improving alignment efficiency and ensuring worker safety.
[0027] Furthermore, as the second reinforcing bar 3 is inserted into the connecting cylinder 4, the protruding part 8 will drive the insert 10 to move closer to the center area of the connecting cylinder 4 and come into contact with the external thread of the outer wall of the second reinforcing bar 3. During the subsequent tightening of the connecting cylinder 4 by the workers, the insert 10 will scrape the external thread surface of the second reinforcing bar 3 as the connecting cylinder 4 rotates, causing any cement or dust that may be adhering to its surface to fall off, making the screwing of the connecting cylinder 4 into the second reinforcing bar 3 smoother, reducing the burden on the workers and improving the smoothness of the installation work.
[0028] 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 process, method, article, or apparatus.
[0029] 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 prefabricated building formwork column installation construction device, comprising a formwork column body (1), the bottom of the formwork column body (1) is provided with a plurality of steel bars one (2), and the ground is fixedly connected with a plurality of steel bars two (3), characterized in that: The bottom outer wall of the steel bar 1 (2) is provided with a connecting cylinder (4), and the inside of the connecting cylinder (4) is provided with multiple clamps (5). The inside of the clamps (5) is provided with a connecting shaft (6), and the two ends of the connecting shaft (6) are fixedly connected to the connecting cylinder (4).
2. The prefabricated building formwork column installation construction device according to claim 1, characterized in that: A torsion spring (7) is provided between the gripper (5) and the connecting shaft (6). Under normal conditions, the torsion spring (7) rotates the gripper (5) to form a 45-degree angle with the connecting cylinder (4).
3. The prefabricated building formwork column installation and construction device according to claim 2, characterized in that: The gripper (5) includes a protruding part (8) and a blocking part (9). After the second steel bar (3) is inserted into the interior of the connecting cylinder (4), the protruding part (8) moves toward the central area of the connecting cylinder (4).
4. The prefabricated building formwork column installation and construction device according to claim 3, characterized in that: The connecting cylinder (4) has an internal thread inside, and the outer walls of the first reinforcing bar (2) and the second reinforcing bar (3) are provided with external threads that mesh with the internal thread of the connecting cylinder (4).
5. The prefabricated building formwork column installation construction device according to claim 4, characterized in that: The outer wall of the gripper (5) is provided with a insert (10). During the process of inserting the second reinforcing bar (3) into the interior of the connecting cylinder (4), the protruding part (8) drives the insert (10) to abut against the external thread surface of the second reinforcing bar (3). The insert (10) is elastic.
6. The prefabricated building formwork column installation construction device according to claim 1, characterized in that: The outer wall of the connecting cylinder (4) is provided with multiple grooves (11), which are used to place the steel wire rope that is horizontally bound to the outer wall of the connecting cylinder (4).
7. The prefabricated building formwork column installation construction device according to claim 1, characterized in that: The bottom of the connecting cylinder (4) is curved.