Temporary sealing device for post-cast strip of concrete structural slab

Abstract

The utility model relates to the technical field of building construction, in particular to a temporary sealing device for a post-cast strip of a concrete structural slab, which solves the problem that cover plates are not connected in the prior art and comprises a cover plate, inclined support plates are connected to the left side and the right side of the cover plate, end plates are connected to the front side and the rear side of the cover plate, and clamping structures are arranged on the end plates. Every two adjacent cover plates are connected through a clamping structure, and the inclined supporting plates are connected with positioning and tight supporting mechanisms matched with the side wall of the post-cast strip. The sealing device has the advantages that the adjacent cover plates are connected through the clamping structures, all the cover plates are connected into a whole, the structural stability of the sealing device is enhanced, meanwhile, gaps between the cover plates can be effectively avoided, and the protection effect is guaranteed; and the positioning and tightening mechanism positions the cover plate by taking the side wall of the post-cast strip as a reference, so that the cover plate can accurately cover the post-cast strip, and the accurate mounting position of the sealing device on the post-cast strip is ensured.

Description

Technical Field

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

[0002] In traditional construction processes, wooden formwork is often used to seal and protect the post-pouring strips of concrete structural slabs. Using wooden formwork requires cutting and processing the formwork before installing it at the post-pouring strip location. This increases the construction steps, and the wooden formwork needs to be removed and discarded later, resulting in material waste. Furthermore, traditionally installed temporary wooden formwork has disadvantages such as being easily damaged, having poor overall integrity, low reusability, and being inconvenient to move. These disadvantages hinder construction efficiency and cost savings, and may also allow construction debris to enter the post-pouring strip, contaminating the reinforcing steel and affecting project quality.

[0003] Patent CN222045127U discloses a standardized, reusable protective cover for horizontal post-pouring strips, comprising: a top cover, square tube keels, and square tube positioning support points. The support ends on both sides of the top cover are folded into 45° angled surfaces along the length direction, and warning signs can be marked on the upper surface. Three square tube keels are evenly distributed along the length direction of the top cover to improve the load-bearing capacity of the top cover. The square tube positioning support points are set on both sides of the square tube keels according to the clear size of the post-pouring strip to prevent disturbance during construction. The top cover is welded to the square tube keels, and the square tube positioning support points are welded to the square tube keels.

[0004] The aforementioned protective cover plates provide safety protection for the openings of the post-cast strip, preventing construction debris from entering the post-cast strip and facilitating the transportation of materials on the construction site. However, in actual construction, due to the long length of the post-cast strip, multiple cover plates need to be installed on one post-cast strip for safety protection. Each cover plate is independent of the others, and gaps can easily appear between the cover plates, resulting in inadequate protection. Utility Model Content

[0005] This utility model proposes a temporary sealing device for the post-cast strip of concrete structural slabs, which solves the problem of no connection between cover plates in the prior art.

[0006] The technical solution of this utility model is implemented as follows:

[0007] A temporary sealing device for post-cast strips in concrete slabs includes a cover plate, with diagonal bracing plates connected to the left and right sides of the cover plate and end plates connected to the front and rear sides of the cover plate. The end plates have snap-fit ​​structures, allowing adjacent cover plates to be connected via these structures. The diagonal bracing plates are equipped with positioning and tightening mechanisms that mate with the sidewalls of the post-cast strip. During post-cast strip protection, the cover plates are connected via the snap-fit ​​structures, forming a unified whole, enhancing the structural stability of the sealing device and preventing gaps between the cover plates, thus ensuring effective protection. The positioning and tightening mechanisms use the sidewalls of the post-cast strip as a reference for accurate installation of the sealing device on the strip.

[0008] The interlocking structure includes a mortise and a tenon. The mortise is located on one end plate of the cover plate, and the tenon is located on the other end plate of the cover plate. The mortise and tenon are interlocked with the tenons on the adjacent cover plates. The cover plates are connected to each other using a mortise and tenon structure to ensure a stable connection between adjacent cover plates.

[0009] The snap-fit ​​structure includes a vertically arranged slider and a sliding groove. The slider is disposed on one end plate of the cover plate, and the sliding groove is disposed on the other end plate of the cover plate. The slider slides into contact with the sliding groove on the adjacent cover plate. The sliding groove is a dovetail groove or a T-groove. The slider and the sliding groove cooperate to limit the relative position of two adjacent cover plates, preventing gaps between the two cover plates and thus ensuring the quality of protection.

[0010] The positioning and tightening mechanism includes a positioning plate and bolts. The bolts pass through the inclined brace plate and are threadedly connected to the positioning plate. The positioning plate mates with the side wall of the post-cast strip. Rotating the bolts can adjust the relative position between the positioning plate and the inclined brace plate, thereby adjusting the spacing between the positioning plates on the left and right sides of the cover plate. This allows the positioning plates on both sides to tighten the side wall of the post-cast strip, thus fixing the cover plate in the position of the post-cast strip.

[0011] The positioning plate includes an integrally connected connecting plate and a support plate. The connecting plate is arranged parallel to the diagonal brace plate, and the bolts are threadedly connected to the connecting plate. The support plate is arranged parallel to the side wall of the post-pouring strip.

[0012] The outer surface of the support plate is provided with an anti-slip pad. The anti-slip pad can increase the friction between the support plate and the side wall of the post-pouring strip, ensuring the stability of the fit between the support plate and the side wall of the post-pouring strip.

[0013] The bracing plate has countersunk holes, and bolts are inserted into these holes. After the cover plate is installed, the bolt heads are inserted into the countersunk holes, which reduces wear on the bolt heads when personnel or handcarts pass through.

[0014] At least one rib is connected to the lower side of the cover plate. The rib is arranged parallel to the end plate, and both ends of the rib are connected to the diagonal bracing plate. The rib enhances the structural strength of the sealing device.

[0015] The positioning and tightening mechanism is staggered with the rib plate to avoid interference between the positioning plate and the rib plate.

[0016] The beneficial effects of this utility model are: adjacent cover plates are connected by a snap-fit ​​structure, so that each cover plate is connected to form a whole, which enhances the structural stability of the sealing device, and at the same time can effectively avoid gaps between cover plates and ensure the protective effect; the positioning and tightening mechanism uses the side wall of the post-pouring strip as a reference to position the cover plate, ensuring that the cover plate can accurately cover the post-pouring strip and ensuring that the sealing device is installed in the correct position on the post-pouring strip.

[0017] The bolts of the positioning and tightening mechanism are inserted into the countersunk holes in the inclined support plate, which can effectively reduce the wear of the bolt heads when personnel or handcarts pass over the inclined support plate. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of a temporary sealing device for post-cast strips in a concrete slab according to the present invention. Figure 1 ;

[0020] Figure 2 Schematic diagram of the enclosed device structure Figure 2 ;

[0021] Figure 3 This is a schematic diagram showing the operating status of the sealing device;

[0022] Figure 4 This is a schematic diagram of the sealing device in Example 2.

[0023] In the diagram: 1. Cover plate, 2. Diagonal brace plate, 21. Countersunk hole, 3. End plate, 31. Mortise, 32. Tenon, 33. Slider, 34. Slide groove, 4. Positioning plate, 41. Connecting plate, 42. Support plate, 5. Bolt, 6. Rib plate, 7. Concrete slab. Detailed Implementation

[0024] 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.

[0025] Example 1, such as Figure 1 , Figure 2 , Figure 3 As shown, a temporary sealing device for post-cast strips in concrete slabs includes a cover plate 1, with diagonal bracing plates 2 connected to the left and right sides of the cover plate 1, and end plates 3 connected to the front and rear sides of the cover plate 1. The end plates 3 have snap-fit ​​structures, and adjacent cover plates 1 are connected via these snap-fit ​​structures. A positioning and tightening mechanism that cooperates with the sidewall of the post-cast strip is connected to the diagonal bracing plates 2. Specifically, the gap between two concrete slabs 7 is the post-cast strip. In this embodiment, the lower edges of the diagonal bracing plates 2 and the end plates 3 are flush. After the sealing device is installed, the diagonal bracing plates 2 and the end plates 3 overlap on the concrete slabs 7. The diagonal bracing plates 2 facilitate the passage of personnel and handcarts, and adjacent cover plates 1 are connected via snap-fit ​​structures, forming a unified whole, enhancing the structural stability of the sealing device, and preventing gaps between cover plates 1, thus ensuring the protective effect. The positioning and tightening mechanism uses the sidewall of the post-cast strip as a reference for positioning, ensuring the accurate installation position of the sealing device on the post-cast strip.

[0026] Furthermore, the snap-fit ​​structure includes a mortise 31 and a tenon 32. The mortise 31 is located on one end plate 3 of the cover plate 1, and the tenon 32 is located on the other end plate 3 of the cover plate 1. The mortise 31 and the tenon 32 on the adjacent cover plate 1 are interlocked. In this embodiment, there are three mortise 31s and three tenons 32. The cover plates 1 are connected to each other using a mortise and tenon structure with mortise 31s and tenons 32, ensuring a stable connection between two adjacent cover plates 1.

[0027] Example 2 differs from Example 1 in that it includes a temporary sealing device for the post-cast strip of a concrete structural slab, such as... Figure 4 As shown, the snap-fit ​​structure includes a vertically arranged slider 33 and a sliding groove 34. The slider 33 is disposed on the end plate 3 on one side of the cover plate 1, and the sliding groove 34 is disposed on the end plate 3 on the other side of the cover plate 1. The slider 33 slides into contact with the sliding groove 34 on the adjacent cover plate 1. The sliding groove 34 is a dovetail groove or a T-groove. In this embodiment, there are two sliders 33 and two sliding grooves 34. The sliding groove 34 is vertically arranged and is a dovetail groove. The cooperation between the slider 33 and the sliding groove 34 can limit the lateral relative position of two adjacent cover plates 1, avoid gaps between the two adjacent cover plates, and thus ensure the protection quality.

[0028] Example 3, based on Example 1, provides a temporary sealing device for post-cast strips in concrete structural slabs. The positioning and tightening mechanism includes a positioning plate 4 and bolts 5. Bolts 5 pass through inclined bracing plates 2 and are threadedly connected to the positioning plate 4. The positioning plate 4 engages with the side wall of the post-cast strip. Specifically, positioning and tightening mechanisms are provided on the inclined bracing plates 2 on both the left and right sides of the cover plate 1. When positioning the cover plate 1, the side wall of the post-cast strip restricts the rotation of the positioning plate 4. Rotating the bolts 5 adjusts the relative position of the positioning plate 4 and the side wall of the post-cast strip. By adjusting the bolts 5 on both sides of the cover plate 1, the positioning plates 4 on both sides of the cover plate 1 contact the side walls of the post-cast strip respectively, thereby fixing the relative position of the cover plate 1 and the post-cast strip and ensuring the installation stability of the sealing device.

[0029] Furthermore, the positioning plate 4 includes an integrally connected connecting plate 41 and a support plate 42. The connecting plate 41 is arranged parallel to the diagonal brace 2, and the bolt 5 is threadedly connected to the connecting plate 41. The support plate 42 is arranged parallel to the side wall of the post-cast strip. When the bolt 5 is rotated, the side wall of the post-cast strip limits the connection position between the connecting plate 41 and the support plate 42, thereby restricting the rotation of the positioning plate 4 and ensuring that the relative position of the positioning plate 4 and the diagonal brace 2 can be adjusted when the bolt 5 is rotated. An anti-slip pad is provided on the outer surface of the support plate 42. When the support plate 42 is in full contact with the side wall of the post-cast strip, the anti-slip pad increases the friction between the support plate 42 and the side wall of the post-cast strip, ensuring the stability of the fit between the support plate 42 and the side wall of the post-cast strip.

[0030] Furthermore, the bracing plate 2 is provided with countersunk holes 21, and bolts 5 are inserted into the countersunk holes 21. After the cover plate 1 is installed, the head of the bolt 5 enters the countersunk hole 21, which can reduce the wear of the bolt head when personnel or handcarts pass through.

[0031] Furthermore, at least one rib 6 is connected to the lower side of the cover plate 1. The rib 6 is arranged parallel to the end plate 3, and both ends of the rib 6 are connected to the diagonal bracing plate 2. The positioning and tightening mechanism is staggered with the rib 6. In this embodiment, there is only one rib 6, and the rib 6 is located in the middle of the cover plate 1. The rib 6 can enhance the overall structural strength of the sealing device and ensure the stability of the sealing structure. The positioning and tightening mechanism is located between the rib 6 and the end plate 3 to avoid interference between the positioning plate 4 and the rib 6.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A concrete structure slab post-cast strip temporary sealing device, comprising a cover plate (1), the left and right sides of the cover plate (1) are connected with inclined bracing plates (2), and the front and back sides of the cover plate (1) are connected with end plates (3), characterized in that, The end plate (3) is provided with a clamping structure, two adjacent cover plates (1) are connected through the clamping structure, and the inclined support plate (2) is provided with a positioning and tightening mechanism matched with the side wall of the post-cast strip.

2. The post-cast strip temporary closure device for concrete structural slabs according to claim 1, characterized in that, The clamping structure comprises a mortise (31) and a tenon (32), the mortise (31) is arranged on the end plate (3) on one side of the cover plate (1), the tenon (32) is arranged on the end plate (3) on the other side of the cover plate (1), and the mortise (31) is inserted and matched with the tenon (32) on the adjacent cover plate (1).

3. The post-cast strip temporary closure device of claim 1, wherein, The clamping structure comprises a vertically arranged sliding block (33) and a sliding groove (34), the sliding block (33) is arranged on the end plate (3) on one side of the cover plate (1), the sliding groove (34) is arranged on the end plate (3) on the other side of the cover plate (1), and the sliding block (33) is slidingly matched with the sliding groove (34) on the adjacent cover plate (1).

4. The post-cast strip temporary closure device of claim 3, wherein, The sliding groove (34) is a dovetail groove or a T-shaped groove.

5. The post-cast strip temporary closure device of any one of claims 1 to 4, wherein, The positioning and tightening mechanism comprises a positioning plate (4) and a bolt (5), the bolt (5) is threadedly connected with the positioning plate (4) through the inclined support plate (2), and the positioning plate (4) is matched with the side wall of the post-cast strip.

6. The post-cast strip temporary closure device of claim 5, wherein, The positioning plate (4) comprises an integrally connected connecting plate (41) and a supporting plate (42), the connecting plate (41) is arranged in parallel with the inclined support plate (2), the bolt (5) is threadedly connected with the connecting plate (41), and the supporting plate (42) is arranged in parallel with the side wall of the post-cast strip.

7. The post-cast strip temporary closure device of claim 6, wherein, The outer side of the supporting plate (42) is provided with an antiskid pad.

8. A post-cast strip temporary closure device for concrete structural slabs as claimed in claim 6 or 7, wherein, The inclined support plate (2) is provided with a counterbore (21), and the bolt (5) is arranged in the counterbore (21).

9. The post-cast strip temporary closure device of claim 8, wherein, The lower side of the cover plate (1) is connected with at least one rib plate (6), the rib plate (6) is arranged in parallel with the end plate (3), and both ends of the rib plate (6) are connected with the inclined support plate (2).

10. The post-cast strip temporary closure device of claim 9, wherein, The positioning and tightening mechanism is arranged in a staggered manner with the rib plate (6).

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