A quick bottom plate post-cast strip plugging device

Abstract

A kind of fast bottom plate post-cast strip plugging device, including the water stop steel plate installed in the vertical direction middle part of bottom plate post-cast strip and two groups of corrugated arc-shaped air bags fitted on the upper and lower of water stop steel plate, there is inflation mouth on the corrugated arc-shaped air bag, and it is block structure in inflated state, two sides are corrugated arc-shaped, front and back are concave-convex respectively, back-up plate is arranged between the corrugated arc-shaped of one side of the corrugated arc-shaped air bag, for supporting corrugated arc-shaped air bag, the other side is provided with fixed structure, the fixed structure is in close contact with corrugated arc-shaped air bag, for supporting corrugated arc-shaped air bag;By using inflatable corrugated arc-shaped air bag to cooperate with fixed structure to carry out plugging, replace traditional galvanized steel mesh, without multiple folding lap joint, plugging tightness is greatly improved, effectively avoid the problem of concrete pouring process leakage, solve the quality defect of loose, not dense concrete surface at post-cast strip, reduce the risk of later cracking, leakage.

Description

Technical Field

[0001] This utility model relates to the field of building construction, and in particular to a quick sealing device for post-cast strips in foundation slabs. Background Technology

[0002] With the rapid changes in cities and the continuous advancement of construction techniques, projects such as multi-story basement buildings are becoming increasingly common. In coastal cities and other complex conditions with high water levels, there are a series of potential risks of basement slab cracking and leakage during construction. For example, during the construction of the post-cast strip in the basement slab, due to high water levels or improper installation of the post-cast strip, a significant amount of manual installation and dismantling work is required during later pouring, resulting in substantial consumption of manpower and resources. Incomplete installation or cleaning can directly lead to insufficient compaction, cracking, and leakage in the post-cast strip concrete, thus affecting the overall structural quality of the basement. Traditionally, galvanized steel mesh is used for sealing post-cast strips; however, this method requires significant manpower and resources. Uneven installation of the wire mesh and multi-layer folding at the overlaps can lead to incomplete sealing, increasing the risk of grout leakage during concrete pouring at the post-pouring strip. This can result in loose and non-dense surfaces later on. Cleaning the galvanized steel wire mesh at the post-pouring strip is inefficient and difficult, easily leading to cold joints and other quality defects after pouring. The quality of the sealing directly affects the cleaning of the post-pouring strip; for example, overflowing grout can cause blockage of the concrete cover for the bottom slab reinforcement, which is difficult to remove after solidification, posing quality and leakage risks. To address these issues, a quick sealing device for the bottom slab post-pouring strip is proposed. Utility Model Content

[0003] The purpose of this utility model is to solve the problems of uneven installation, loose overlap leading to grout leakage, difficult cleaning, insufficient concrete pouring, easy cold joints and leakage, as well as the large amount of manual installation and dismantling work and high consumption of manpower and material resources in the construction of post-pouring strips for basement foundation slabs.

[0004] The present invention adopts the following technical solution: A quick sealing device for post-cast strips in foundation slabs includes a water-stop steel plate installed in the vertical middle of the post-cast strip in the foundation slab and two sets of corrugated arc-shaped airbags attached to the top and bottom of the water-stop steel plate. Each corrugated arc-shaped airbag has an inflation nozzle. When inflated, it is block-shaped with semi-circular corrugated structures arranged sequentially from top to bottom on both sides, forming vertical corrugated arcs on the concrete above and below the water-stop steel plate. Both ends have concave and convex structures for multiple corrugated arc-shaped airbags to expand along the length of the water-stop steel plate. A backing plate is provided between the corrugated arcs on one side of each airbag to support it, and a fixing structure is provided on the other side. The fixing structure is in close contact with the corrugated arc-shaped airbags to support them. A compression airbag is provided at the end of each airbag away from the water-stop steel plate to protect the airbag and effectively enclose the reinforcing steel to form a closed state. Furthermore, the fixing structure includes a fixing frame and inner support members and a movable baffle installed on the fixing frame. The upper and lower ends of the fixing frame are respectively fixed to the top and bottom reinforcements of the post-cast strip of the bottom plate by bracket clamps. The fixing frame is provided with two sets of inner support members corresponding to two sets of corrugated arc-shaped airbags. The inner support members are connected to the fixing frame by a rotating shaft. Each set of inner support members has two members. The other end of the inner support member is set in a figure-eight shape on the movable baffle. The movable baffle includes an upper baffle and a lower baffle. The upper inner support member is connected to the rotating shaft of the upper baffle, and the lower baffle has a placement seat for connecting to the rotating shaft of the lower inner support member. Furthermore, each of the inner support members includes a support rod and an adjusting rod. The support rod is divided into two parts, each with a ruler-shaped opening between them. The ruler-shaped openings of the two parts overlap, and bolts are installed inside the openings to adjust the distance between the two parts. The included angle between the two parts of the support rod is 180 degrees. The adjusting rod is also divided into two parts, each connected by bolts to adjust the included angle between the two parts, thereby adjusting the support of the support rod on the movable baffle. The two parts of the adjusting rod and the support rod together form a triangle to improve the stability of the fixed corrugated arc-shaped airbag. Furthermore, both the upper and lower baffles are provided with ruler-shaped openings that overlap, and bolts are installed inside the openings to adjust the distance between them. The upper end of the upper baffle has a semi-circular groove that fits into the corrugated airbag on the side near the corrugated airbag, and the lower end of the lower baffle has a semi-circular groove that fits into the corrugated airbag on the side near the corrugated airbag, so as to match the shape of the corrugated airbag and ensure that the corrugated airbag does not shift when subjected to external impact. Furthermore, a protective strip made of galvanized square tubing is provided between the upper baffle and the lower baffle and the compression airbag to ensure that the compression airbag does not shift and to prevent concrete leakage during the pouring of the base plate. Furthermore, each set of corrugated arc-shaped airbags has multiple corrugated arc-shaped airbags, which are assembled by the concave and convex structures at the front and rear ends and arranged radially along the waterstop steel plate, wherein the backing plate and fixing structure are arranged radially with the corrugated arc-shaped airbags. Furthermore, the water-stop steel plate is located in the middle of the left and right direction of the bottom plate post-cast strip, and the corrugated arc-shaped airbag forms two parts in the bottom plate post-cast strip for pouring concrete separately.

[0005] The beneficial effects of this utility model are: By using inflatable corrugated arc-shaped airbags in conjunction with a fixed structure for sealing, the traditional galvanized steel mesh is replaced. This eliminates the need for multiple layers of folding and overlapping, significantly improving the sealing tightness and effectively preventing grout leakage during concrete pouring. It also solves the quality defects of loose and non-dense concrete surfaces at the post-pouring strip, reducing the risk of later cracking and leakage. The bracket clamps connect to the top and bottom reinforcement bars of the post-cast strip, making installation and disassembly convenient, greatly reducing the amount of manual installation and disassembly work and reducing the consumption of manpower and material resources; there is no need to chisel and clean the steel mesh in the later stage, avoiding the problem of the reinforcement protective layer being filled by overflow grout, reducing construction procedures and improving construction efficiency. It adopts an adjustable support rod and adjustment rod structure, combined with a movable baffle with a semi-circular groove, which can adapt to corrugated arc airbags under different conditions. The triangular support structure has strong stability and can effectively prevent the airbag from shifting and deforming under the pressure of concrete pouring, thus ensuring the stability of the sealing effect. Multiple corrugated arc-shaped airbags are assembled through a concave-convex structure, which can be flexibly adjusted and combined according to the length of the post-pouring strip to adapt to different construction scenarios and have strong versatility; the dual protective structure of water-stop steel plate and airbags further enhances the water-stopping and seepage prevention capabilities of the post-pouring strip and ensures the overall structural quality of the basement. Attached Figure Description

[0006] Figure 1 A schematic diagram of the overall structure of a quick-connecting post-cast strip sealing device for a base plate, for utility model purposes; Figure 2 A schematic diagram of part A of a quick-connecting post-cast strip sealing device for a base plate, which is a utility model. Figure 3 A schematic diagram of part B of a quick-connecting post-cast strip sealing device for a base plate, for utility model purposes; Figure 4 A schematic diagram of a corrugated arc-shaped airbag structure for a quick sealing device for post-cast strips in a base plate, as per utility model. Figure 5 A schematic diagram of the movable baffle structure of a quick-connecting post-cast strip sealing device for a base plate, for utility model purposes; Figure 6 A side view of a quick-connecting device for sealing post-cast strips in a base plate, for utility model purposes; Figure 7A schematic diagram of section C of a quick-connecting post-cast strip sealing device for a base plate, as per utility model; In the diagram: 1. Water-stop steel plate; 2. Corrugated arc-shaped airbag; 3. Backing plate; 4. Fixing structure; 5. Fixing frame; 6. Bracket clamp; 7. Internal support; 8. Support rod; 9. Adjusting rod; 10. Movable baffle; 11. Upper baffle; 12. Lower baffle; 13. Compressed airbag; 14. Protective strip; 15. Inflation nozzle; 16. Bottom rib; 17. Top rib. Detailed Implementation

[0007] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0008] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0009] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0010] Example 1 This utility model provides a quick sealing device for the post-pouring strip of the base plate, including a water-stop steel plate 1 installed in the middle of the vertical direction of the post-pouring strip of the base plate and two sets of corrugated arc-shaped airbags 2 attached to the upper and lower parts of the water-stop steel plate 1. The water-stop steel plate 1 is located at the center of the width direction of the post-pouring strip, while the upper and lower sets of corrugated arc-shaped airbags 2 form two independent chambers in the post-pouring strip space on both sides of the water-stop steel plate 1 for subsequent phased pouring of concrete on both sides. The corrugated arc-shaped airbags 2 are provided with air inlets 15. When inflated, the whole is block-shaped, and the cross-section on both sides is a semi-circular corrugated structure arranged from top to bottom, which is used to form a vertical corrugated arc on the concrete above and below the water-stop steel plate 1. The two ends are concave and convex structures, which are used for multiple corrugated arc-shaped airbags 2 to expand along the length direction of the water-stop steel plate 1. The dimensions are 900mm long * 600mm high * 90mm thick, which can better adapt to the gaps between the reinforcing bars and increase the contact area. A backing plate 3 is installed on the corrugated arc-shaped recess on one side of the corrugated arc-shaped airbag 2 to support the airbag from the inside and enhance its overall stability. On the other side of the corrugated arc-shaped airbag 2, a fixing structure 4 is provided. The fixing structure 4 presses against the outer surface of the corrugated arc-shaped airbag 2 to provide support from the outside, thereby firmly clamping the corrugated arc-shaped airbag 2 between the backing plate 3 and the fixing structure 4. At the outermost end of the corrugated arc-shaped airbag 2 away from the water-stop steel plate 1, a flexible compression airbag bag 13 is also provided. When the corrugated arc-shaped airbag 2 collides with the steel bar, the compression airbag bag 13 can be compressed according to the size of the steel bar to ensure that the corrugated arc-shaped airbag 2 and the steel bar are effectively wrapped to form a closed state and prevent concrete slurry from flowing out. For longer sections of post-pouring strip, multiple corrugated arc-shaped airbags 2 can be spliced ​​and installed along the length of the waterstop steel plate 1. The concave and convex structures at the front and rear ends of each corrugated arc-shaped airbag 2 interlock with each other to achieve seamless splicing. The corresponding backing plate 3 and fixing structure 4 are also extended and arranged accordingly to form a continuous sealing system. The fixed structure 4 includes a fixed frame 5, an inner support member 7 and a movable baffle 10 installed on the fixed frame 5. The fixed frame 5 is fastened to the top surface reinforcement 17 and the bottom bottom reinforcement 16 of the post-cast strip of the base plate by bracket clamps 6, thereby obtaining a stable installation foundation. Two sets of movable inner support members 7 are hinged on the fixed frame 5, which respectively support the upper and lower corrugated arc-shaped airbags 2. The inner support members 7 are connected to the fixed frame 5 by a pivot. There are two inner support members 7 in each set. The other ends of the two inner support members 7 are arranged in a figure-eight shape on the movable baffle 10. The figure-eight arrangement can disperse the supporting force on the movable baffle 10 and improve the stability of the support. The movable baffle 10 includes an upper baffle 11 and a lower baffle 12. The upper one of the inner support members 7 is connected to the upper baffle 11 by a pivot. The lower baffle 12 has a placement seat for connecting to the lower one of the inner support members 7 by a pivot. Each inner support 7 includes a support rod 8 and an adjusting rod 9. The support rod 8 is divided into two parts, each with a ruler-shaped opening between them. The ruler-shaped openings of the two parts overlap, and bolts are installed inside the openings. The included angle between the two parts of the support rod 8 is 180 degrees. By tightening the bolts, the distance between the two parts of the support rod 8 can be adjusted, thereby adjusting the overall length of the support rod 8. The adjusting rod 9 is also divided into two parts, each connected by bolts. By tightening the bolts, the included angle between the two parts of the adjusting rod 9 can be adjusted. The two parts of the adjusting rod 9 and the support rod 8 together form a triangle. By utilizing the stability property of the triangle, the stability of the fixed corrugated arc-shaped airbag 2 is improved, and the airbag is prevented from shifting under the pressure of concrete pouring. Both the upper baffle 11 and the lower baffle 12 are provided with ruler-shaped openings, which overlap and are equipped with bolts. This structure allows the distance between the upper baffle 11 and the lower baffle 12 to be adjusted by turning the bolts, thus accommodating corrugated arc-shaped airbags 2 of different sizes. The upper end of the upper baffle 11 has a semi-circular groove that fits into the corrugated arc-shaped airbag 2 on the side close to the upper baffle 11. The lower end of the lower baffle 12 has a semi-circular groove that fits into the corrugated arc-shaped airbag 2 on the side close to the lower baffle 12. The semi-circular groove structure matches the shape of the corrugated arc-shaped airbag 2, ensuring that the corrugated arc-shaped airbag 2 does not shift when subjected to external impact. A galvanized square tube protective strip 14 is provided between the upper baffle 11 and the lower baffle 12 and the compression airbag 13, which can effectively prevent the compression airbag 13 from shifting and avoid concrete leakage during the bottom slab pouring. After installing the corrugated arc-shaped airbag 2, once the concrete has been poured and reached its strength, remove the corrugated arc-shaped airbag 2. The concrete surface will then naturally form a mortise and tenon structure shape according to the pattern of the corrugated arc-shaped airbag 2. The mortise and tenon structure consists of two parts: the tenon of the protruding part and the mortise of the recessed part, which can play a physical water-blocking role and reduce the risk of leakage. The corrugated arc-shaped airbag 2 and the detachable fixing structure 4 can be repeatedly used during the construction of the post-pouring strip of the basement floor slab, which can achieve quick and convenient installation and dismantling, save time, and be environmentally friendly and energy-saving.

[0011] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. The various components mentioned in this utility model are common technologies in the existing field. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A quick-connecting device for sealing post-cast strips in base slabs, characterized in that, The system includes a waterstop steel plate (1) installed in the middle of the vertical direction of the post-cast strip of the base plate and two sets of corrugated arc-shaped airbags (2) attached to the top and bottom of the waterstop steel plate (1). The corrugated arc-shaped airbags (2) have inflation nozzles (15). When inflated, the whole structure is block-shaped, and the cross-sections on both sides are semi-circular corrugated structures arranged from top to bottom. These structures are used to form vertical corrugated arcs on the concrete above and below the waterstop steel plate (1). The two ends are concave and convex structures, which are used for multiple corrugated arc-shaped airbags (2) along the waterstop steel plate (1). Extending along the length direction, a backing plate (3) is provided between the corrugated arcs on one side of the corrugated arc airbag (2) to support the corrugated arc airbag (2), and a fixing structure (4) is provided on the other side. The fixing structure (4) is in close contact with the corrugated arc airbag (2) to support the corrugated arc airbag (2). A compression airbag bag (13) is provided at the end of the corrugated arc airbag (2) away from the water-stop steel plate (1) to protect the corrugated arc airbag (2) and the steel bar to effectively wrap and form a closed state.

2. The quick-connecting device for sealing the post-cast strip of the base plate according to claim 1, characterized in that, The fixed structure (4) includes a fixed frame (5) and an inner support member (7) and a movable baffle (10) installed on the fixed frame (5). The upper and lower ends of the fixed frame (5) are fixed on the top reinforcement (17) and bottom reinforcement (16) of the bottom plate post-cast strip by bracket clamps (6), respectively. The fixed frame (5) is provided with two sets of inner support members (7) corresponding to two sets of corrugated arc-shaped airbags (2). The inner support members (7) are connected to the fixed frame (5) by a rotating shaft. There are two inner support members (7) in each set. The other end of the inner support member (7) is set on the movable baffle (10) in a figure-eight shape. The movable baffle (10) includes an upper baffle (11) and a lower baffle (12). The upper one of the inner support members (7) is connected to the upper baffle (11) by a rotating shaft. The lower baffle (12) has a placement seat for connecting to the lower one of the inner support members (7) by a rotating shaft.

3. The quick-connecting device for sealing the post-cast strip of the base plate according to claim 2, characterized in that, Each of the inner support members (7) includes a support rod (8) and an adjusting rod (9). The support rod (8) is divided into two parts, each with a ruler-shaped opening between them. The ruler-shaped openings of the two parts overlap, and bolts are installed in the openings to adjust the distance between the two parts. The two parts of the support rod (8) are at an angle of 180 degrees. The adjusting rod (9) is divided into two parts, each connected by bolts to adjust the angle between the two parts, thereby adjusting the support of the support rod (8) on the movable baffle (10). The two parts of the adjusting rod (9) and the support rod (8) form a triangle to improve the stability of the fixed corrugated arc-shaped airbag (2).

4. The quick-connecting device for sealing the post-cast strip of the base plate according to claim 3, characterized in that, Both the upper baffle (11) and the lower baffle (12) are provided with ruler-shaped openings, which overlap and are equipped with bolts to adjust the distance between them. The upper end of the upper baffle (11) has a semi-circular groove that fits into the corrugated arc-shaped airbag (2) on the side close to the upper end of the upper baffle (11). The lower end of the lower baffle (12) has a semi-circular groove that fits into the corrugated arc-shaped airbag (2) on the side close to the lower end of the lower baffle (12). This is to match the shape of the corrugated arc-shaped airbag (2) and ensure that the corrugated arc-shaped airbag (2) does not shift when subjected to external force.

5. A quick sealing device for post-cast strips in base slabs according to claim 4, characterized in that, A protective strip (14) made of galvanized square tube is provided between the upper baffle (11) and the lower baffle (12) and the compression airbag (13) to ensure that the compression airbag (13) does not move and to prevent concrete leakage during the pouring of the base plate.

6. A quick sealing device for post-cast strips in base slabs according to claim 5, characterized in that, Each set of corrugated arc-shaped airbags (2) has multiple units. Multiple corrugated arc-shaped airbags (2) are assembled by the concave and convex structures at the front and rear ends and arranged radially along the waterstop steel plate (1). The backing plate (3) and the fixing structure (4) are arranged radially along with the corrugated arc-shaped airbags (2).

7. A quick sealing device for post-cast strips in base slabs according to claim 6, characterized in that, The water-stop steel plate (1) is located in the middle of the left and right direction of the bottom plate post-cast strip, and the corrugated arc-shaped airbag (2) forms two parts in the bottom plate post-cast strip, which are used to pour concrete separately.

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