A hollow floor steel mesh anti-floating fixing device
By introducing components such as right-angle positioning plates, positioning nuts, right-angle connecting plates, and combination plates into the hollow steel mesh fixing device of the hollow floor slab, an overall reinforced structure is formed, which solves the problem of floor slab floating and improves the stability and adaptability of construction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG CENT SOUTH CONSTR GROUP
- Filing Date
- 2025-07-03
- Publication Date
- 2026-07-14
AI Technical Summary
The existing hollow core slab steel mesh is prone to floating after being hollowed out. The lack of right-angle positioning plates and positioning nuts leads to unstable template connections, poor adaptability, and inability to form an overall structural reinforcement.
A right-angle positioning plate is used to set mounting holes and positioning nuts. Positioning screws are installed by thread. The right-angle connecting plate and the combination plate are used to form an integral structure with the combination screws to reinforce the template. The fixed plate and the connecting side plate are combined for separate installation and snap-fit fixation.
It achieves efficient reinforcement of the template, improves the strength and stability of the overall structure, has high adaptability, and ensures construction quality and safety.
Smart Images

Figure CN224495539U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building construction, and more specifically, to a device for fixing hollow floor slabs with steel mesh for anti-buoyancy. Background Technology
[0002] In construction engineering, the floor slab is an integral part of the main structure of a building, and its quality directly affects the building's safety and stability. During floor slab construction, hollow core slabs are typically constructed using steel mesh perforation technology to reduce weight and improve strength and earthquake resistance. However, because hollow core slabs are prone to floating, an effective fixing device is needed to secure them and prevent displacement or floating during concrete pouring, thereby ensuring the construction quality and safety of the floor slab.
[0003] The utility model patent with authorization announcement number CN 220747382 U relates to a device for fixing and preventing the buoyancy of a hollow floor slab steel mesh, comprising: a U-shaped open hoop with a diameter of 12mm; a first connector connected to the U-shaped open hoop; a second connector, one end of which is connected to the first connector and the other end of which is tied to the beam reinforcement; and a third connector, one end of which is connected to the first connector and the other end of which is connected to the formwork. After installation, this utility model can effectively control the height of the steel mesh, ensure accurate positioning, and guarantee that the steel mesh box will not float during concrete pouring, preventing bulging on the top surface of the formed concrete. This ensures the vertical spacing as designed in the drawings meets the design requirements and prevents the steel mesh from floating.
[0004] In the above-disclosed structure, the threaded connectors are used to position each other to assist in the positioning of the template. However, the lack of a right-angle positioning plate to set the positioning nut and positioning screw not only makes it impossible to interchange the connection and easily leads to misalignment and interference, but also makes it impossible to install and fix separately, affecting the stability of the connection with the template and resulting in poor adaptability. Furthermore, the lack of a right-angle connecting plate to install the combination plate makes it impossible to connect multiple positions to each other, resulting in insufficient stability. Improvements are needed. Utility Model Content
[0005] To address the problems existing in the prior art, the purpose of this utility model is to provide a hollow core slab steel mesh anti-buoyancy fixing device. It uses right-angle positioning plates with mounting holes and positioning nuts to thread positioning screws, allowing for separate installation. This facilitates reinforcement of the formwork, is convenient and efficient, and allows for the installation of combination plates and combination screws via right-angle connecting plates on both sides. This enables side-to-side connection to form an integrated structure for reinforcement, improving overall structural strength, facilitating installation and use, and offering high adaptability.
[0006] To solve the above problems, the present invention adopts the following technical solution.
[0007] A device for fixing and preventing buoyancy of hollow core slab steel mesh includes a right-angle positioning plate. Mounting holes are provided on both ends of the right-angle positioning plate. A positioning nut is fixedly welded to one end of each mounting hole. The positioning nuts are fixedly arranged on both ends of the right-angle positioning plate. A positioning screw is threadedly installed on one end of each positioning nut. A positioning head is provided on one end of each positioning screw, which is inserted into the mounting hole. Right-angle connecting plates are fixedly welded to both sides of the corner of the right-angle positioning plate. Combined threaded holes are provided at both ends of the right-angle connecting plates. Combined plates are fixedly connected to both ends of the combined connecting plates. Combined through holes are provided at both ends of the combined plates. The combined through holes are located inside the combined threaded holes. Combined screws are inserted into the combined through holes, and the combined screws are threadedly installed inside the combined threaded holes.
[0008] Furthermore, there are four mounting holes, which are located at both ends of the right-angle positioning plate.
[0009] Furthermore, there are two positioning screws, which are connected together to the vertical surface of the right-angle positioning plate.
[0010] Furthermore, there are two right-angle connecting plates, which are symmetrically connected to the two sides of the right-angle positioning plate. By connecting positioning screws at both ends and installing the right-angle connecting plates symmetrically, they can be combined for installation, which is convenient for combination and reinforcement, and is safe and stable.
[0011] Furthermore, a fixing plate is fixedly installed on the surface of the positioning nut, and a fixing hole is provided in the middle of the fixing plate. The fixing plate is combined and connected to the horizontal surface of the right-angle positioning plate.
[0012] Furthermore, a fixing screw is rotatably installed inside the fixing hole, and the fixing screw is threaded inside the positioning nut.
[0013] Furthermore, the two ends of the fixed plate are fixedly connected to connecting side plates, and the ends of the connecting side plates are provided with snap-fit notches. By connecting the fixed plate with fixing screws and combining the connecting side plates on both sides, the two parts can be installed separately and then snap-fit fixed. This facilitates the reinforcement and support of the bottom end of the right-angle positioning plate, improves the overall installation structure strength and stability, and the separate structure is conducive to combination and connection, with high adaptability, convenience and stability.
[0014] Compared with existing technologies, the advantages of this utility model are:
[0015] (1) This solution uses right-angle positioning plates to set mounting holes and positioning nuts, thereby threadedly installing positioning screws. It can be installed separately, which is conducive to strengthening the template. It is convenient and efficient. Furthermore, the right-angle connecting plates on both sides can be used to install combination plates and combination screws, which can be connected from the side to form an integral structure for reinforcement, improving the overall structural strength, facilitating installation and use, and having high adaptability.
[0016] (2) By connecting positioning screws at both ends and installing right-angle connecting plates symmetrically, the installation positions can be combined, which is convenient for combination reinforcement and is safe and stable.
[0017] (3) By fixing the fixed plate and fixing screws, combined with the connecting side plates on both sides, it can be installed separately and then snapped together. This makes it convenient to reinforce the bottom end of the right angle positioning plate, improve the overall installation structure strength and stability, and the separate structure is conducive to combination connection, with high adaptability, convenience and stability. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0019] Figure 2 This is a schematic diagram of the planar structure of the present invention;
[0020] Figure 3 This is a partial structural diagram of the combined plate connection of this utility model;
[0021] Figure 4 This is a structural schematic diagram of the right-angle positioning plate of this utility model;
[0022] Figure 5 This is a schematic diagram of the structure of the fixing plate of this utility model.
[0023] Explanation of the labels in the diagram:
[0024] 1. Right-angle positioning plate, 11. Mounting hole, 12. Positioning nut, 13. Positioning screw, 14. Positioning head, 15. Right-angle connecting plate, 16. Combined threaded hole, 17. Combined plate, 18. Combined through hole, 19. Combined screw, 2. Fixed plate, 21. Fixed hole, 22. Fixed screw, 23. Connecting side plate, 24. Snap-fit notch. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0026] Please see Figure 1 , Figure 3 and Figure 4 A device for fixing and preventing buoyancy of hollow core slab steel mesh includes a right-angle positioning plate 1. Mounting holes 11 are provided on both ends of the right-angle positioning plate 1. Positioning nuts 12 are fixedly welded to one end of each mounting hole 11. The positioning nuts 12 are fixedly arranged on both ends of the right-angle positioning plate 1. A positioning screw 13 is threaded into one end of each positioning nut 12. A positioning head 14 is provided at one end of each positioning screw 13. The device allows for the vertical surface of the positioning plate 1 to be aligned with the template surface before the positioning screw 13 is threaded into the positioning nut 12. The positioning head 14 can then be inserted into the template for fixed positioning. This facilitates support and fixation of the hollow core slab steel mesh, improves buoyancy stability, and provides secure and efficient support without interference. The positioning screw 13 is inserted into the mounting hole 11 for right-angle positioning. Right-angle connecting plates 15 are fixedly welded to both sides of the corner position of plate 1. The two ends of the right-angle connecting plates 15 are provided with combined threaded holes 16. The two ends of the right-angle connecting plates 15 are fixedly connected with combined plates 17. The two ends of the combined plates 17 are provided with combined through holes 18. The combined through holes 18 are located inside the combined threaded holes 16. Combined screws 19 are inserted into the combined through holes 18. The combined screws 19 are threaded into the combined threaded holes 16. By arranging the right-angle positioning plates 1 on the template surface, they can be fixed at certain intervals. Then, the combined plates 17 are installed on the treatment connecting plates 16 on the side and fixed with the combined screws 19. They can be installed separately from both sides, thereby connecting and fixing the spaced right-angle positioning plates 1 to form an integral structure, improving the structural strength and stability, and ensuring the anti-buoyancy effect.
[0027] Please see Figure 1 and Figure 4 There are four mounting holes 11, which are located at both ends of the right-angle positioning plate 1. There are two positioning screws 13, which are connected to the vertical surface of the right-angle positioning plate 1. There are two right-angle connecting plates 15, which are symmetrically connected to the two sides of the right-angle positioning plate 1. By connecting the positioning screws at both ends and installing the right-angle connecting plates symmetrically, the mounting positions can be combined, which is convenient for combination and reinforcement, and is safe and stable.
[0028] Please see Figure 1 , Figure 2 and Figure 5A fixing plate 2 is fixedly installed on the surface of the positioning nut 12. A fixing hole 21 is provided in the middle of the fixing plate 2. The fixing plate 2 is connected to the horizontal surface of the right-angle positioning plate 1. A fixing screw 22 is rotatably installed inside the fixing hole 21. The fixing screw 22 is threaded inside the positioning nut 12. Connecting side plates 23 are fixedly connected to both ends of the fixing plate 2. The ends of the connecting side plates 23 are provided with snap-fit notches 24. By connecting the fixing plate and fixing screws, and combining the connecting side plates on both sides, it can be installed separately and then snap-fit fixed. This facilitates the reinforcement and support of the bottom end of the right-angle positioning plate, improves the overall installation structure strength and stability, and the separate structure is conducive to combination and connection, with high adaptability, convenience and stability.
[0029] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.
Claims
1. A device for fixing the anti-buoyancy of steel mesh in hollow floor slabs, comprising a right-angle positioning plate (1), wherein mounting holes (11) are provided on both ends of the right-angle positioning plate (1), and a positioning nut (12) is fixedly welded to one end of the mounting hole (11), characterized in that: The positioning nuts (12) are fixedly arranged on both ends of the right-angle positioning plate (1). A positioning screw (13) is threaded on one end of the positioning nut (12). A positioning head (14) is provided on one end of the positioning screw (13). The positioning screw (13) is inserted into the mounting hole (11). A right-angle connecting plate (15) is fixedly welded on both sides of the corner position of the right-angle positioning plate (1). The two ends of the right-angle connecting plate (15) are provided with combined threaded holes (16). The two ends of the right-angle connecting plate (15) are fixedly connected with a combination plate (17). The two ends of the combination plate (17) are provided with combined through holes (18). The combined through holes (18) are located inside the combined threaded holes (16). A combination screw (19) is inserted into the combined through holes (18). The combination screw (19) is threaded into the combined threaded holes (16).
2. The anti-buoyancy fixing device for hollow floor slabs with steel mesh as described in claim 1, characterized in that: There are four mounting holes (11), which are located at both ends of the right-angle positioning plate (1).
3. The anti-buoyancy fixing device for hollow floor slabs with steel mesh as described in claim 1, characterized in that: There are two positioning screws (13), which are connected together to the vertical surface of the right-angle positioning plate (1).
4. The anti-buoyancy fixing device for hollow floor slabs with steel mesh as described in claim 1, characterized in that: There are two right-angle connecting plates (15), which are symmetrically connected to the two sides of the right-angle positioning plate (1).
5. A hollow floor slab steel mesh anti-buoyancy fixing device according to claim 1, characterized in that: A fixing plate (2) is fixedly installed on the surface of the positioning nut (12). A fixing hole (21) is provided in the middle of the fixing plate (2). The fixing plate (2) is connected to the horizontal surface of the right-angle positioning plate (1).
6. A hollow floor slab steel mesh anti-buoyancy fixing device according to claim 5, characterized in that: A fixing screw (22) is rotatably installed inside the fixing hole (21), and the fixing screw (22) is threaded inside the positioning nut (12).
7. A hollow floor slab steel mesh anti-buoyancy fixing device according to claim 5, characterized in that: The fixed plate (2) is fixedly connected to both ends of a connecting side plate (23), and the end of the connecting side plate (23) is provided with a snap-fit notch (24).