A prefabricated steel truss floor deck fixing connector

Abstract

This utility model discloses a prefabricated steel truss floor deck fixing connector, belonging to the field of prefabricated building technology. It addresses the problem of unstable installation caused by the lack of a tensioning structure when two adjacent bottom molds are only connected by snap-fit. The connector includes a first bottom mold and a second bottom mold. A first fixing plate is detachably connected to the bottom of the first bottom mold, and multiple first fixing bolts are rotatably connected to the bottom of the first fixing plate. This utility model, through the combination of a tensioning mechanism and an L-shaped support plate, allows the worm gear to rotate when the first and second bottom molds are installed. This rotation causes two worm wheels to rotate simultaneously. Under the action of the rack, the two worm wheels drive two straight plates to move inward simultaneously, thereby causing the tensioning plate to pull the L-shaped support plate inward. This ensures that the embedded block is tightly fitted against the inner walls of the vertical and horizontal folding plates, maintaining a tight connection between the first and second bottom molds. This effectively improves the overall strength of the steel truss floor deck and ensures the reliability and safety of the structure.

Description

Technical Field

[0001] This utility model belongs to the field of prefabricated building technology, specifically relating to a prefabricated steel truss floor deck fixing connector. Background Technology

[0002] Steel truss floor decking is a type of building product in which the reinforcing steel bars in a floor slab are welded into a steel truss in a factory, and the steel truss is fixedly connected to the bottom formwork to form an integrated bottom formwork and reinforcing steel bars. During construction, the steel truss floor decking is fixed between two load-bearing beams and concrete is poured directly. The bottom formwork bears the weight of the concrete, and the steel truss provides unsupported rigidity to the bottom formwork. Compared with traditional floor decking that relies on bottom formwork to support the concrete, steel truss floor decking accelerates the construction progress and enhances the support effect.

[0003] In the prior art, a connecting component for the bottom formwork of a steel truss floor slab (patent publication number CN213683190U) is described. In this patent, the base slab is bent downwards to form a first folded plate, which is then bent in the opposite direction to form a second folded plate. The second folded plate is bent downwards to form a third folded plate. The first and second folded plates form a cavity with the first steel truss floor slab bottom formwork. The second connecting component includes a fixed plate and an extension plate. The fixed plate is fixedly installed below the edge of the second steel truss floor slab bottom formwork, and the extension plate is located outside the edge of the second steel truss floor slab bottom formwork, fitting into the cavity. This device has a simple structure, low processing cost, and makes the connection between the steel truss floor slab bottom formworks tighter. However, in practical use, it still has the following shortcomings: In practice, after two adjacent bottom formworks are joined together by the first and second connecting components, there is no constraint structure to keep them tightly connected. Even slight shaking later on can cause displacement, resulting in a looser connection between the two adjacent steel truss floor slab bottom formworks.

[0004] Therefore, a prefabricated steel truss floor deck fixing connector is needed to solve the problem of unstable installation caused by the lack of tension structure when two adjacent bottom forms are only connected by snap-fit ​​in the existing technology. Utility Model Content

[0005] The purpose of this utility model is to provide a prefabricated steel truss floor deck fixing connector to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a prefabricated steel truss floor deck fixing connector, comprising a first bottom mold and a second bottom mold, wherein a first fixing plate is detachably connected to the bottom of the first bottom mold, a plurality of first fixing bolts are rotatably connected to the bottom of the first fixing plate, a vertical folding plate is fixedly connected to the bottom of the first fixing plate, a horizontal folding plate is fixedly connected to the bottom of the vertical folding plate, and a tensioning mechanism is provided at the bottom of the horizontal folding plate; a second fixing plate is detachably connected to the bottom of the second bottom mold, a plurality of second fixing bolts are rotatably connected to the bottom of the second fixing plate, an embedded block is fixedly connected to the inner side of the second fixing plate, and an L-shaped support plate corresponding to the tensioning mechanism is fixedly connected to the outer side of the embedded block.

[0007] It should be noted in the solution that the bottom of the first bottom mold has multiple mounting holes corresponding to the first fixing bolts, and the bottom of the second bottom mold has multiple mounting holes corresponding to the second fixing bolts.

[0008] It is further worth noting that the tensioning mechanism includes two limiting sliders slidably connected to the bottom of the horizontal folding plate. A straight plate is fixedly connected to the bottom of each of the two limiting sliders. A rack is fixedly connected to the inner end of each of the two straight plates. A tensioning plate is fixedly connected to the inner side of each of the two straight plates. Two worm gears that mesh with the rack are rotatably connected to the bottom of the horizontal folding plate. A convex frame is fixedly connected to the bottom of the horizontal folding plate. A worm is rotatably connected to the inner wall of the convex frame. A knob is fixedly connected to the outer side of the worm through the convex frame.

[0009] Furthermore, it should be noted that the bottom of the horizontal folding plate is provided with a limiting groove corresponding to the limiting slider.

[0010] In a preferred embodiment, both worm gears mesh with the worm.

[0011] In a preferred embodiment, the outer wall of the embedded block is tightly fitted with the inner wall of the vertical folding plate and the inner wall of the horizontal folding plate.

[0012] Compared with the prior art, the prefabricated steel truss floor deck fixing connector provided by this utility model has at least the following beneficial effects:

[0013] (1) By setting up a tensioning mechanism and an L-shaped support plate, after the first and second bottom molds are installed, the knob is turned to drive the worm gear to rotate, so that the two worm wheels rotate at the same time. Under the action of the rack, the two worm wheels drive the two straight plates to move inward at the same time, so that the tensioning plate pulls the L-shaped support plate inward, so that the embedded block is tightly attached to the inner wall of the vertical folded plate and the inner wall of the horizontal folded plate, so that the first and second bottom molds always maintain a tight connection, effectively improving the overall strength of the steel truss floor deck and ensuring the reliability and safety of the structure.

[0014] (2) By setting the first fixing bolt and the second fixing bolt, it is convenient to install and disassemble the first fixing plate and the second fixing plate, and to facilitate the maintenance and repair in the later stage. If the connecting parts are damaged or need to be adjusted, they can be quickly replaced or repaired by disassembling the bolts, avoiding a more complicated disassembly process. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a first partial exploded view of the present invention;

[0017] Figure 3 This is a second partially exploded view of the present invention;

[0018] Figure 4 This is a schematic diagram of the tensioning mechanism of this utility model.

[0019] In the diagram: 1. First bottom mold; 2. Second bottom mold; 3. First fixing plate; 4. First fixing bolt; 5. Vertical folding plate; 6. Horizontal folding plate; 7. Tensioning mechanism; 701. Limiting slider; 702. Straight plate; 703. Rack; 704. Tensioning plate; 705. Worm gear; 706. Convex frame; 707. Worm; 708. Knob; 8. Second fixing plate; 9. Second fixing bolt; 10. Embedded block; 11. L-shaped support plate. Detailed Implementation

[0020] The present invention will be further described below with reference to the embodiments.

[0021] Please see Figure 1-4 This utility model provides a prefabricated steel truss floor deck fixing connector, including a first bottom mold 1 and a second bottom mold 2. The bottom of the first bottom mold 1 is detachably connected to a first fixing plate 3. The bottom of the first fixing plate 3 is rotatably connected to a plurality of first fixing bolts 4. The bottom of the first fixing plate 3 is fixedly connected to a vertical folding plate 5. The bottom of the vertical folding plate 5 is fixedly connected to a horizontal folding plate 6. The bottom of the horizontal folding plate 6 is provided with a tensioning mechanism 7. The bottom of the second bottom mold 2 is detachably connected to a second fixing plate 8. The bottom of the second fixing plate 8 is rotatably connected to a plurality of second fixing bolts 9. The inner side of the second fixing plate 8 is fixedly connected to an embedded block 10. The outer side of the embedded block 10 is fixedly connected to an L-shaped support plate 11 corresponding to the tensioning mechanism 7.

[0022] Further as Figure 1 , Figure 2 and Figure 3As shown, it is worth noting that the bottom of the first bottom mold 1 has multiple mounting holes corresponding to the first fixing bolt 4, and the bottom of the second bottom mold 2 has multiple mounting holes corresponding to the second fixing bolt 9. The pre-designed mounting holes make the installation process of the fixing bolts simpler and faster, avoiding the trouble of drilling on site, reducing construction time, and improving construction efficiency. These mounting holes help the bolts to be evenly distributed on the bottom of the bottom mold, providing more balanced mechanical support and increasing the stability and load-bearing capacity of the connection. This is especially important for the fixed connection of the floor deck, and can effectively prevent deformation or damage caused by uneven load.

[0023] Further as Figure 1 , Figure 2 and Figure 3 As shown, it is worth noting that the outer wall of the embedded block 10 is closely fitted with the inner wall of the vertical folded plate 5 and the inner wall of the horizontal folded plate 6. The embedded block 10 can effectively form a strong connection with the vertical folded plate 5 and the horizontal folded plate 6, so that the entire structure can distribute the force evenly when under stress, improve its overall load-bearing capacity and stiffness, and effectively avoid mechanical weaknesses caused by weak connections.

[0024] As can be seen from the above working process, by setting the first fixing bolt 4 and the second fixing bolt 9, it is convenient to install and disassemble the first fixing plate 3 and the second fixing plate 8, which facilitates later maintenance and repair. If the connecting parts are damaged or need to be adjusted, they can be quickly replaced or repaired by disassembling the bolts, avoiding a more complicated disassembly process.

[0025] Further as Figure 4 As shown, it is worth noting that the tensioning mechanism 7 includes two limiting sliders 701 slidably connected to the bottom of the horizontal folding plate 6. A straight plate 702 is fixedly connected to the bottom of each of the two limiting sliders 701. A rack 703 is fixedly connected to the inner end of each of the two straight plates 702. A tensioning plate 704 is fixedly connected to the inner side of each of the two straight plates 702. Two worm gears 705 meshing with the rack 703 are rotatably connected to the bottom of the horizontal folding plate 6. A convex frame 706 is fixedly connected to the bottom of the horizontal folding plate 6. A worm 707 is rotatably connected to the inner wall of the convex frame 706. A knob 708 is fixedly connected to the outer side of the worm 707 through the convex frame 706. By setting the tensioning mechanism 7 and the L-shaped support plate 11 to cooperate, the embedded block 10 is tightly fitted to the inner wall of the vertical folding plate 5 and the inner wall of the horizontal folding plate 6, thereby ensuring that the first bottom mold 1 and the second bottom mold 2 are always tightly connected, effectively improving the overall strength of the steel truss floor deck and ensuring the reliability and safety of the structure.

[0026] Further as Figure 4As shown, it is worth noting that the bottom of the horizontal folding plate 6 is provided with a limiting groove corresponding to the limiting slider 701. The limiting groove can effectively control the movement range of the limiting slider 701 at the bottom of the horizontal folding plate 6, prevent the limiting slider 701 from exceeding the predetermined trajectory or position, ensure the accurate positioning of the entire connecting part, and help improve the alignment accuracy of the parts during assembly. By limiting the movement range of the slider 701 through the limiting groove, over-adjustment or over-tightening is avoided, ensuring the mechanical properties and load-bearing capacity of the connecting part, and avoiding material damage or excessive wear caused by excessive tightness.

[0027] Further as Figure 4 As shown, it is worth noting that both worm gears 705 mesh with the worm 707, ensuring that the worm 707 can drive both worm gears 705 to rotate simultaneously. The meshing of the worm gears 705 and the worm 707 has a reverse self-locking characteristic, ensuring that when the worm 707 stops rotating, the worm gears 705 will not rotate in the opposite direction due to external force or load, thus maintaining the fixed state of the connecting parts. This is crucial for structures that require high-precision fixing and prevention of loosening, especially under external vibration or pressure.

[0028] The solution has the following working process: In actual use, the first fixing plate 3 is installed at the bottom of the first bottom mold 1 by the first fixing bolt 4, and the second fixing plate 8 is installed at the bottom of the second bottom mold 2 by the second fixing bolt 9. After installation, the knob 708 is turned to drive the worm gear 707 to rotate, so that the two worm wheels 705 rotate at the same time. Under the action of the rack 703, the two worm wheels 705 drive the two straight plates 702 to move inward at the same time, so that the tensioning plate 704 pulls the L-shaped support plate 11 inward, so that the embedded block 10 is tightly attached to the inner wall of the vertical folding plate 5 and the inner wall of the horizontal folding plate 6, so that the first bottom mold 1 and the second bottom mold 2 always maintain a tight connection.

[0029] In summary: By setting the first fixing bolt 4 and the second fixing bolt 9, the installation and disassembly of the first fixing plate 3 and the second fixing plate 8 are facilitated, making subsequent maintenance and repair easier. If the connecting parts are damaged or need adjustment, they can be quickly replaced or repaired by removing the bolts, avoiding a more complicated disassembly process. By setting the tensioning mechanism 7 and the L-shaped support plate 11 in cooperation, the embedded block 10 is tightly fitted to the inner wall of the vertical folding plate 5 and the inner wall of the horizontal folding plate 6, so that the first bottom formwork 1 and the second bottom formwork 2 always maintain a tight connection, effectively improving the overall strength of the steel truss floor deck and ensuring the reliability and safety of the structure.

Claims

1. A prefabricated steel bar truss floor support plate fixed connecting piece, comprising a first bottom die (1) and a second bottom die (2), characterized in that: The bottom of the first bottom mold (1) is detachably connected to a first fixing plate (3), and the bottom of the first fixing plate (3) is rotatably connected to a plurality of first fixing bolts (4). The bottom of the first fixing plate (3) is fixedly connected to a vertical folding plate (5), and the bottom of the vertical folding plate (5) is fixedly connected to a horizontal folding plate (6). The bottom of the horizontal folding plate (6) is provided with a tensioning mechanism (7). The bottom of the second bottom mold (2) is detachably connected to a second fixing plate (8), and the bottom of the second fixing plate (8) is rotatably connected to a plurality of second fixing bolts (9). The inner side of the second fixing plate (8) is fixedly connected to an embedding block (10), and the outer side of the embedding block (10) is fixedly connected to an L-shaped support plate (11) corresponding to the tensioning mechanism (7).

2. The prefabricated steel bar truss floor support plate fixed connecting piece according to claim 1, characterized in that: The bottom of the first bottom mold (1) has multiple mounting holes corresponding to the first fixing bolt (4), and the bottom of the second bottom mold (2) has multiple mounting holes corresponding to the second fixing bolt (9).

3. The prefabricated steel truss floor deck fixing connector according to claim 1, characterized in that: The tensioning mechanism (7) includes two limiting sliders (701) slidably connected to the bottom of the horizontal folding plate (6). The bottom of each of the two limiting sliders (701) is fixedly connected to a straight plate (702). The inner ends of each of the two straight plates (702) are fixedly connected to a rack (703). The inner sides of the two straight plates (702) are fixedly connected to a tensioning plate (704). The bottom of the horizontal folding plate (6) is rotatably connected to two worm gears (705) that mesh with the rack (703). The bottom of the horizontal folding plate (6) is fixedly connected to a convex frame (706). The inner wall of the convex frame (706) is rotatably connected to a worm (707). The outer side of the worm (707) passes through the convex frame (706) and is fixedly connected to a knob (708).

4. A prefabricated steel truss floor deck fixing connector according to claim 3, characterized in that: The bottom of the horizontal folding plate (6) is provided with a limiting groove corresponding to the limiting slider (701).

5. The prefabricated steel bar truss floor support plate fixed connecting piece according to claim 3, characterized in that: Both of the worm gears (705) mesh with the worm (707).

6. The prefabricated steel bar truss floor support plate fixed connecting piece according to claim 1, characterized in that: The outer wall of the embedded block (10) is closely fitted with the inner wall of the vertical folding plate (5) and the inner wall of the horizontal folding plate (6).

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