Prefabricated composite slab post-cast strip leak-proof grouting structure

Abstract

The utility model discloses a prefabricated composite board post-cast strip anti-leakage slurry structure belongs to building engineering equipment technical field, this prefabricated composite board post-cast strip anti-leakage slurry structure, include: mould bottom plate, the top fixedly connected with two groups of positioning connecting block of mould bottom plate, every group of positioning connecting block all is provided with two, the top fixedly connected with mould frame of mould bottom plate, anti-leakage frame board, anti-leakage frame board sets up in the top of mould frame, this prefabricated composite board post-cast strip anti-leakage slurry structure respectively drive four transmission screw rods rotate to fix installation anti-leakage frame board on mould frame, make the composite board post-cast strip in the pouring process, and the slurry will not leak from the steel bar depositing groove, and the slurry is left in the composite board forming space that mould bottom plate and mould frame are formed with maximum limit, thereby reduce the slurry waste, improve raw material utilization, save material cost, and avoid the adhesion of slurry leakage to mould and steel bar, reduce the subsequent cleaning cost.

Description

Technical Field

[0001] This utility model relates to the field of building engineering equipment technology, and more specifically, to a grout leakage prevention structure for post-cast strips of precast composite slabs. Background Technology

[0002] Precast composite slabs are a common component in prefabricated buildings. They are typically manufactured in factories and consist of a bottom concrete slab and embedded steel trusses. Their characteristics include high standardization and stable quality. During construction, they are directly hoisted into place as permanent formwork for the subsequent pouring of concrete, saving on-site formwork time and allowing the precast sections to share the load with the cast-in-place concrete in the composite layer, forming a unified floor slab structure. Precast composite slabs offer advantages in both efficiency and structural performance and are widely used in residential, office, and other buildings with high standards of standardization.

[0003] A post-cast strip in precast composite slabs refers to a strip-shaped cast-in-place area reserved between adjacent composite slabs after installation to coordinate structural deformation or resolve joint connection issues. Additional reinforcing bars are placed within the post-cast strip and anchored to the precast slab truss reinforcement. Concrete is poured after the main structure has settled to a certain extent, thus eliminating the impact of differential deformation during construction. Its core function is to enhance overall integrity and regulate deformation differences. It is commonly found in large-span structures or settlement-sensitive areas and is a key structural measure to ensure the overall load-bearing performance of prefabricated buildings.

[0004] The molds used in the casting process of composite slabs have multiple rebar placement slots on their short and long sides to reserve positions for the rebars during concrete pouring, forming the load-bearing structure of the composite slab. However, during concrete pouring, slurry easily seeps out from the gaps between the rebars and the placement slots, resulting in slurry waste, low material utilization, and the solidified slurry adhering to the mold and rebar surfaces, requiring manual cleaning, increasing labor time, and reducing production efficiency. Summary of the Invention

[0005] To address the problems existing in the prior art, the purpose of this utility model is to provide a grout-proof structure for the post-cast strip of precast composite slabs. This structure prevents grout from leaking out of the rebar placement groove during the casting process, keeping the grout within the composite slab forming space formed by the mold base plate and mold frame to the maximum extent. This reduces grout waste, improves raw material utilization, saves material costs, and prevents grout from adhering to the mold and rebar, thus reducing subsequent cleaning costs.

[0006] To solve the above problems, the present invention adopts the following technical solution: A precast composite slab post-cast strip anti-grout leakage structure includes: A mold base plate, the top of which is fixedly connected to two sets of positioning connecting blocks, each set of which has two blocks, and a mold frame is fixedly connected to the top of which is fixedly connected to the mold base plate. A leak-proof frame plate, wherein the leak-proof frame plate is disposed on the top of the mold frame, and the leak-proof frame plate is fixedly connected with two sets of first leak-proof blocks and two sets of second leak-proof blocks, wherein each set of first leak-proof blocks has multiple blocks, and each set of second leak-proof blocks has multiple blocks; and Two positioning connection boxes are fixedly connected to the outer surfaces of the two sides of the leak-proof frame plate. Each positioning connection box is slidably sleeved on two corresponding positioning connection blocks. A control box is fixedly connected to the outer surfaces of both sides of each positioning connection box. A transmission threaded rod is rotatably connected between each control box and the corresponding positioning connection box. A transmission plate is threadedly connected to each transmission threaded rod. Two connecting rods are fixedly connected to one outer surface of each transmission plate. Each pair of connecting rods slides through the corresponding positioning connection box and the corresponding positioning connection block.

[0007] As a preferred embodiment of this utility model, a rubber pad is fixedly connected to the bottom of each of the first leak-proof blocks, and a rubber pad is also fixedly connected to the bottom of each of the second leak-proof blocks.

[0008] As a preferred embodiment of this utility model, each control box is fixedly connected to a corresponding positioning connection box with a limit rod, and each transmission plate is slidably sleeved on the corresponding limit rod.

[0009] As a preferred embodiment of this utility model, each of the limiting rods is made of stainless steel.

[0010] As a preferred embodiment of this utility model, a hexagonal rotating block is rotatably connected to one side of the outer surface of each control box, and each hexagonal rotating block is fixedly connected to the corresponding transmission threaded rod.

[0011] As a preferred embodiment of this utility model, each of the connecting rods is made of stainless steel.

[0012] Compared with the prior art, this utility model provides a precast composite slab post-pouring strip anti-leakage structure, which has the following beneficial effects: This precast composite slab post-cast strip anti-leakage structure, when the anti-leakage frame plate is attached to the top of the mold frame, each first anti-leakage block and each second anti-leakage block are embedded in the corresponding rebar placement groove. Each positioning connection box is fitted onto the corresponding two positioning connection blocks. Then, by controlling the rotation of the hexagonal rotating block, four transmission threaded rods are driven to rotate, so that each transmission plate drives the corresponding two connecting rods to insert through the corresponding positioning connection blocks, thereby fixing the anti-leakage frame plate on the mold frame. This ensures that during the pouring process of the composite slab post-cast strip, the slurry will not leak from the rebar placement groove, and the slurry will remain to the maximum extent in the composite slab forming space composed of the mold base plate and the mold frame, thereby reducing slurry waste, improving raw material utilization, saving material costs, and preventing slurry leakage from adhering to the mold and rebar, reducing subsequent cleaning costs. Attached Figure Description

[0013] Figure 1 This is a perspective view of the present utility model; Figure 2 This is an exploded view of the present invention; Figure 3 For the present utility model Figure 2 Enlarged view of point A in the middle; Figure 4 For the present utility model Figure 2 Enlarged view at point B in the middle; Figure 5 This is a partial structural cross-sectional view of the positioning and connecting box of this utility model; Figure 6 For the present utility model Figure 5 Enlarged view of point C in the middle.

[0014] Explanation of the labels in the diagram: 1. Mold base plate; 2. Mold frame; 3. Leak-proof frame plate; 4. Positioning connection box; 5. First leak-proof block; 6. Second leak-proof block; 7. Rubber pad; 8. Positioning connection block; 9. Control box; 10. Connecting rod; 11. Transmission plate; 12. Transmission threaded rod; 13. Limiting rod; 14. Hexagonal rotating block. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, 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 scope of protection of the present utility model. Example

[0016] Please see Figures 1-6 A precast composite slab post-cast strip anti-grout leakage structure, comprising: The mold base plate 1 has two sets of positioning connecting blocks 8 fixedly connected to its top, and each set of positioning connecting blocks 8 has two blocks. The mold frame 2 is fixedly connected to the top of the mold base plate 1. Leak-proof frame plate 3 is installed on the top of mold frame 2. The leak-proof frame plate 3 is fixedly connected to two sets of first leak-proof blocks 5 and two sets of second leak-proof blocks 6. Each set of first leak-proof blocks 5 has multiple blocks, and each set of second leak-proof blocks 6 has multiple blocks. Two positioning connection boxes 4 are fixedly connected to the outer surfaces of the two sides of the leak-proof frame plate 3. Each positioning connection box 4 is slidably sleeved on the two corresponding positioning connection blocks 8. A control box 9 is fixedly connected to the outer surfaces of both sides of each positioning connection box 4. A transmission threaded rod 12 is rotatably connected between each control box 9 and the corresponding positioning connection box 4. A transmission plate 11 is threadedly connected to each transmission threaded rod 12. Two connecting rods 10 are fixedly connected to one side of the outer surface of each transmission plate 11. Each pair of connecting rods 10 slides through the corresponding positioning connection box 4 and the corresponding positioning connection block 8.

[0017] In a specific embodiment of this utility model, the mold base plate 1 and the mold frame 2 are common composite slab production molds. Multiple rebar placement slots are provided on both the short and long sides of the mold frame 2. Each first leak-proof block 5 and each second leak-proof block 6 at the bottom of the leak-proof frame plate 3 corresponds one-to-one with the corresponding rebar placement slot. During the composite slab pouring process, the middle portion without concrete pouring is the post-pouring strip in the composite slab pouring process. When the leak-proof frame plate 3 is attached to the top of the mold frame 2, each first leak-proof block 5 and each second leak-proof block 6 is embedded in the corresponding rebar placement slot. Each positioning connection box 4 is fitted onto... The corresponding two positioning connecting blocks 8 are then connected by controlling the rotation of four transmission threaded rods 12, so that each transmission plate 11 drives the corresponding two connecting rods 10 to insert into the corresponding positioning connecting blocks 8, thereby fixing the anti-leakage frame plate 3 on the mold frame 2. This prevents the slurry from leaking out from the rebar placement groove during the pouring process of the composite plate post-pouring strip, keeping the slurry to the maximum extent in the composite plate forming space composed of the mold base plate 1 and the mold frame 2, thereby reducing slurry waste, improving raw material utilization, saving material costs, and preventing the slurry from adhering to the mold and rebar, reducing subsequent cleaning costs.

[0018] Specifically, a rubber pad 7 is fixedly connected to the bottom of each first leak-proof block 5, and a rubber pad 7 is also fixedly connected to the bottom of each second leak-proof block 6.

[0019] In this embodiment, the first leak-proof block 5 and the second leak-proof block 6 are separated from the reinforcing bars by rubber pads 7. Due to their own deformation, the rubber pads 7 make the gaps between the first leak-proof block 5 and the second leak-proof block 6 and the reinforcing bars smaller, thus making the grout leakage prevention effect better.

[0020] Specifically, each control box 9 is fixedly connected to the corresponding positioning connection box 4 with a limit rod 13, and each transmission plate 11 is slidably sleeved on the corresponding limit rod 13.

[0021] In this embodiment, the transmission plate 11 keeps the limiting rod 13 stable during movement.

[0022] Specifically, each limit rod 13 is made of stainless steel.

[0023] In this embodiment, the surface of the limiting rod 13 is smooth, and the friction between it and the transmission plate 11 is small.

[0024] Specifically, each control box 9 has a hexagonal rotating block 14 rotatably connected to one side of its outer surface, and each hexagonal rotating block 14 is fixedly connected to the corresponding transmission threaded rod 12.

[0025] In this embodiment, the hexagonal swivel block 14 is used to facilitate the operator to rotate the transmission threaded rod 12.

[0026] Specifically, each connecting rod 10 is made of stainless steel.

[0027] In this embodiment, each connecting rod 10 is made of stainless steel, which is not easy to rust and will not be easily damaged even after long-term use.

[0028] Working principle: During the pouring of composite slabs, the unpoured section in the middle is the post-pouring strip. When the leak-proof frame plate 3 is attached to the top of the mold frame 2, each first leak-proof block 5 and each second leak-proof block 6 are embedded in the corresponding rebar placement groove. Each positioning connection box 4 is fitted onto the corresponding two positioning connection blocks 8. Then, by controlling the rotation of the hexagonal rotating block 14, the four transmission threaded rods 12 are driven to rotate, so that each transmission plate 11 drives the corresponding two connecting rods 10 to insert through the corresponding positioning connection blocks 8, thereby fixing the leak-proof frame plate 3 on the mold frame 2. This prevents the slurry from leaking out from the rebar placement groove during the pouring process of the post-pouring strip of the composite slab. The slurry is kept to the maximum extent in the forming space of the composite slab formed by the mold base plate 1 and the mold frame 2, thereby reducing slurry waste, improving raw material utilization, saving material costs, and preventing the slurry from adhering to the mold and rebar, reducing subsequent cleaning costs.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A grout leakage prevention structure for post-cast strips of precast composite slabs, characterized in that, include: The mold base plate (1) has two sets of positioning connecting blocks (8) fixedly connected to its top. Each set of positioning connecting blocks (8) has two blocks. The mold base plate (1) has a mold frame (2) fixedly connected to its top. A leak-proof frame plate (3) is disposed on the top of the mold frame (2). The leak-proof frame plate (3) is fixedly connected with two sets of first leak-proof blocks (5) and two sets of second leak-proof blocks (6). Each set of first leak-proof blocks (5) has multiple blocks, and each set of second leak-proof blocks (6) has multiple blocks. Two positioning connection boxes (4) are fixedly connected to the outer surfaces of the two sides of the leak-proof frame plate (3). Each positioning connection box (4) is slidably sleeved on the corresponding two positioning connection blocks (8). A control box (9) is fixedly connected to the outer surfaces of both sides of each positioning connection box (4). A transmission threaded rod (12) is rotatably connected between each control box (9) and the corresponding positioning connection box (4). A transmission plate (11) is threadedly connected to each transmission threaded rod (12). Two connecting rods (10) are fixedly connected to one side of the outer surface of each transmission plate (11). Each pair of connecting rods (10) slides through the corresponding positioning connection box (4) and the corresponding positioning connection block (8).

2. The precast composite slab post-cast strip anti-leakage structure according to claim 1, characterized in that: Each of the first leak-proof blocks (5) has a rubber pad (7) fixedly connected to its bottom, and each of the second leak-proof blocks (6) also has a rubber pad (7) fixedly connected to its bottom.

3. The precast composite slab post-cast strip anti-leakage structure according to claim 1, characterized in that: Each control box (9) is fixedly connected to a limit rod (13) with the corresponding positioning connection box (4), and each transmission plate (11) is slidably sleeved on the corresponding limit rod (13).

4. The precast composite slab post-cast strip anti-leakage structure according to claim 3, characterized in that: Each of the aforementioned limit rods (13) is made of stainless steel.

5. The precast composite slab post-cast strip anti-leakage structure according to claim 1, characterized in that: Each of the control boxes (9) has a hexagonal rotating block (14) rotatably connected to one side of its outer surface, and each of the hexagonal rotating blocks (14) is fixedly connected to the corresponding transmission threaded rod (12).

6. The precast composite slab post-cast strip anti-leakage structure according to claim 1, characterized in that: Each of the connecting rods (10) is made of stainless steel.

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