Early closing device for external wall post-cast strip formwork

Abstract

The utility model relates to the technical field of building structure construction, in particular to an early closing device for an outer wall post-cast strip formwork, which solves the problems that a closing device in the prior art cannot be recycled and is high in construction cost, and comprises a concrete outer wall and a baffle, a post-cast strip is arranged on the concrete outer wall, and the baffle is in sliding fit with the concrete outer wall. The baffle corresponds to the post-cast strip in position; the baffle comprises a plurality of flat plates, and every two adjacent flat plates are movably connected through a connecting assembly. The device has the advantages that the baffle is in vertical sliding fit with the concrete outer wall, the baffle is dismantled in the mode that the baffle is lifted upwards after a foundation pit is backfilled, recycling of the baffle is achieved, and construction cost is effectively reduced; the baffles can be folded after being detached, so that the baffles can be conveniently stored; when the baffle is in the unfolded state, the adjacent flat plates are tightly attached, and the sealing performance of the baffle is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of building structure construction technology, and in particular to a device for pre-closing the formwork of the post-cast strip of an exterior wall. Background Technology

[0002] Abstract: With the continuous development of economic globalization, various industries in my country face both opportunities and challenges, and the construction industry is no exception. The construction of post-cast strips in buildings can only begin after the building structure has been completed and the settlement has largely stabilized. However, for post-cast strips in the exterior walls of underground cast-in-place structures, the formwork must be erected in advance to complete the waterproofing layer, backfilling of the foundation pit, and other related work, quickly creating a working surface for on-site construction. Traditional exterior wall formwork using masonry and plastering has a long construction period. After the masonry is completed, cracks easily form between it and the structure due to settlement, resulting in poor masonry stability. This leads to deformation during later concrete pouring, causing damage to the waterproofing layer and leakage. Furthermore, the interior formwork is pieced together independently from the exterior formwork, making reinforcement difficult. This can lead to quality defects such as formwork bulging and grout leakage during later concrete construction. Inadequate reinforcement can even result in formwork bursting, failing to meet quality requirements.

[0003] Patent publication number CN216275849U discloses a pre-sealing retaining structure for post-cast strips in underground exterior walls and an underground exterior wall structure. This pre-sealing retaining structure includes a flat plate made of steel; reinforcing bars, with several reinforcing bars fixed to one side of the plate; and lifting rings welded to one side wall of the plate. The first section of the reinforcing bars is welded to one side of the plate. This retaining structure has advantages such as high strength, high rigidity, and strong bearing capacity. However, it cannot be recycled after use, resulting in high construction costs and poor economic and social benefits. Utility Model Content

[0004] This utility model proposes a pre-sealing device for the formwork of the post-cast strip of the exterior wall, which solves the problems of non-recyclability and high construction costs of the existing sealing device.

[0005] The technical solution of this utility model is implemented as follows:

[0006] A pre-closure device for formwork of post-cast strips on exterior walls includes a concrete exterior wall and a baffle. The concrete exterior wall has a post-cast strip, and the baffle slides in conjunction with the concrete exterior wall, with the baffle corresponding to the position of the post-cast strip. The baffle comprises multiple flat plates, with adjacent flat plates movably connected by a connecting component. After use, the baffle can be pulled out from above the concrete exterior wall for recycling, effectively reducing construction costs. Furthermore, the baffle, composed of multiple movably connected flat plates, can be folded for easy storage.

[0007] Vertically arranged positioning steps are provided on the outer surface of the concrete exterior wall. The positioning steps are located on both sides of the post-cast strip, and the two side edges of the baffle slide in conjunction with the positioning steps. The positioning steps limit the installation position of the baffle through the two side edges of the baffle, ensuring the accurate installation position of the baffle.

[0008] The outer side of the concrete exterior wall is equipped with multiple limiting components arranged side by side from top to bottom. These limiting components engage with the outer surface of the baffle to limit its movement. The limiting components limit the horizontal movement of the baffle, ensuring its stable installation in the horizontal direction, while also allowing the baffle to move vertically, enabling its disassembly and recycling.

[0009] The limiting assembly includes a limiting strip and a limiting bolt. The limiting bolt is embedded in the concrete exterior wall. The limiting strip engages with the outer surface of the baffle for limiting movement. The limiting bolt passes through the end of the limiting strip and connects to a limiting nut. After the limiting nut is connected to the limiting bolt, the limiting strip is fixed, ensuring the installation stability of the limiting strip on the concrete exterior wall and the horizontal stability of the limiting strip relative to the baffle.

[0010] The connecting assembly includes a first connecting pipe and a second connecting pipe, which are respectively disposed on the upper and lower sides of the plate. The first connecting pipe on one plate is connected to the second connecting pipe on the other plate by a pin.

[0011] The connecting assembly includes an upper connecting seat disposed on the upper side of the plate and a lower connecting seat disposed on the lower side of the plate, and the upper connecting seat and the lower connecting seat are movably connected by a connector.

[0012] The connector includes a first connecting rod and a second connecting rod arranged in parallel. The first connecting rod and the second connecting rod are connected by a third connecting rod. The first connecting rod is movably connected to the upper connecting seat, and the second connecting rod is movably connected to the lower connecting seat.

[0013] The upper side of the plate is provided with an upper receiving groove, which is inserted into the lower connecting seat; the lower side of the plate is provided with a lower receiving groove, which is inserted into the upper connecting seat. When two adjacent plates are unfolded, their upper and lower edges can fit together, achieving a seal between the two plates.

[0014] The height of the baffle is not less than the height of the concrete exterior wall. This ensures the baffle completely seals the post-cast strip on the concrete exterior wall, preventing soil from entering the post-cast strip during backfilling of the foundation pit.

[0015] The upper end of the baffle is connected to a lifting ring. After the foundation pit is backfilled, the baffle is lifted upwards using the lifting ring to remove and recycle it.

[0016] The beneficial effects of this utility model are: the baffle slides vertically with the concrete exterior wall, and the baffle can be removed by lifting it upwards after the foundation pit is backfilled, thus realizing the recycling of the baffle and effectively reducing construction costs; the baffle can be folded after removal, making it easy to store; when the baffle is unfolded, the adjacent flat plates fit tightly together, ensuring the sealing of the baffle. Attached Figure Description

[0017] 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.

[0018] Figure 1 This is a front view of a pre-sealing device for the formwork of a post-cast strip in an exterior wall according to this utility model.

[0019] Figure 2 A cross-sectional view of the pre-sealed device;

[0020] Figure 3 Top view of the pre-sealed device;

[0021] Figure 4 This is a schematic diagram of the baffle in its folded state;

[0022] Figure 5 This is a cross-sectional view of the baffle in its folded state.

[0023] Figure 6 A schematic diagram of the connecting components when the baffle is in the unfolded state;

[0024] Figure 7 This is a schematic diagram of the connector structure.

[0025] In the diagram: 1. Baffle, 2. Lifting ring, 3. Limiting strip, 4. Limiting bolt, 5. Connecting assembly, 6. Concrete exterior wall, 61. Positioning step, 7. Limiting nut, 11. Flat plate, 111. Lower receiving groove, 112. Upper receiving groove, 51. Connector, 52. Lower connecting seat, 53. Upper connecting seat, 511. First connecting rod, 512. Second connecting rod, 513. Third connecting rod. Detailed Implementation

[0026] 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.

[0027] Example 1, such as Figure 1 , Figure 2 , Figure 3 As shown, a pre-sealing device for the formwork of a post-cast strip on an exterior wall includes a concrete exterior wall 6 and a baffle 1. The concrete exterior wall 6 is provided with a post-cast strip, and the baffle 1 is slidably engaged with the concrete exterior wall 6, with the baffle 1 corresponding to the position of the post-cast strip. The baffle 1 includes multiple flat plates 11, and adjacent flat plates 11 are movably connected by a connecting component 5. Specifically, the baffle 1 is vertically slidably engaged with the concrete exterior wall 6, and the baffle 1 can move up and down on the concrete exterior wall 6 to realize the installation and disassembly of the baffle 1, realize the recycling of the baffle 1, and reduce construction costs. Before backfilling the foundation pit, the baffle 1 is installed on the concrete exterior wall 6 to seal the position of the post-cast strip, which is beneficial for the backfilling of the foundation pit. After the baffle 1 is removed, it can be folded for easy storage.

[0028] Furthermore, vertically arranged positioning steps 61 are provided on the outer surface of the concrete exterior wall 6. The positioning steps 61 are located on both sides of the post-pouring strip, and the two side edges of the baffle 1 slide in cooperation with the positioning steps 61. The positioning steps 61 ensure that the baffle 1 is installed in an accurate position and that the baffle 1 can completely seal the post-pouring strip, avoiding leakage during the backfilling of the foundation pit.

[0029] Furthermore, multiple limiting components are arranged side-by-side from top to bottom on the outer side of the concrete outer wall 6, and the limiting components are matched with the outer surface of the baffle 1 for limiting. In this embodiment, the number of limiting components is 5, and the limiting components are evenly arranged. After the limiting components are installed, they can limit the baffle 1 in the horizontal direction to ensure the installation stability of the baffle 1. The height of the positioning step 61 is greater than or equal to the thickness of the baffle 1. After the limiting components are installed, they can only limit the baffle 1 in the horizontal direction. The baffle 1 can move up and down, which facilitates the lifting and disassembly of the baffle 1.

[0030] Furthermore, the limiting component includes a limiting strip 3 and a limiting bolt 4. The limiting bolt 4 is pre-embedded in the concrete outer wall 6. The limiting strip 3 engages with the outer surface of the baffle 1 for limiting. The end of the limiting bolt 4 passes through the limiting strip 3 and connects to the limiting nut 7. The limiting bolt 4 is installed in the concrete outer wall 6 by pre-embedding to ensure stable installation. After the limiting nut 7 is tightened, the limiting strip 3 fits against the baffle 1, thereby limiting the movement of the baffle 1.

[0031] Example 2, based on Example 1, provides a pre-closure device for the formwork of the post-cast strip of an exterior wall. The connecting component 5 includes a first connecting pipe and a second connecting pipe, which are respectively disposed on the upper and lower sides of a plate 11. The first connecting pipe on one plate 11 is connected to the second connecting pipe on another plate 11 via a pin. Both the first and second connecting pipes are galvanized steel pipes. The first and second connecting pipes are connected to the plate 11 by welding. The first and second connecting pipes are staggered. During the assembly of the baffle 1, the first and second connecting pipes are arranged coaxially. Then, the pin is inserted into the first and second connecting pipes to achieve a hinged connection between two adjacent plates, thereby allowing the baffle 1 to be folded for easy storage.

[0032] Example 3, based on Example 1, provides a device for pre-sealing the formwork of the post-cast strip in an exterior wall, such as... Figure 4 , Figure 5 As shown, the connecting assembly 5 includes an upper connecting seat 52 disposed on the upper side of the plate 11 and a lower connecting seat 53 disposed on the lower side of the plate 11. The upper connecting seat 52 and the lower connecting seat 53 are movably connected by a connector 51. Two adjacent plates 11 are hinged together by a connecting frame 51 to achieve the folding and storage of the baffle 1.

[0033] Furthermore, such as Figure 7 As shown, the connector 51 includes a first connecting rod 511 and a second connecting rod 512 arranged in parallel. The first connecting rod 511 and the second connecting rod 512 are connected by a third connecting rod 513. The first connecting rod 511 is movably connected to the upper connecting seat 52, and the second connecting rod 512 is movably connected to the lower connecting seat 53. In this embodiment, the first connecting rod 511 is located in the middle of the second connecting rod 512, and both ends of the second connecting rod 512 are connected to the lower connecting seat 53. The distance between the first connecting rod 511 and the second connecting rod 512 is greater than or equal to the thickness of the flat plate 11, ensuring that two adjacent flat plates 11 can remain parallel after the baffle 1 is folded, thus reducing the space occupied by the baffle 1 after folding.

[0034] Furthermore, such as Figure 6As shown, the upper side of the plate 11 is provided with an upper receiving groove 112, which is inserted into the lower connecting seat 53; the lower side of the plate 11 is provided with a lower receiving groove 111, which is inserted into the upper connecting seat 52. After the baffle 1 is unfolded, the lower connecting seat 53 is inserted into the upper receiving groove 112, and the upper connecting seat 52 is inserted into the lower receiving groove 111. The upper receiving groove 11 limits the lower connecting seat 53, and the lower receiving groove 111 limits the upper connecting seat 52, so that the two adjacent plates 11 are in the same plane; in addition, the depth of the receiving groove is greater than the height of the connecting seat, so that the connecting seat can be completely inserted into the receiving groove, thereby ensuring that the upper and lower edges of the two adjacent plates 11 are in close contact, ensuring the sealing of the baffle 1 to the post-pouring strip.

[0035] Furthermore, the height of the baffle 1 is not lower than the height of the concrete exterior wall 6. This ensures that the baffle 1 completely seals the post-cast strip on the concrete exterior wall 6, preventing soil from entering the post-cast strip during backfilling of the foundation pit.

[0036] Furthermore, a lifting ring 2 is connected to the upper end of the baffle 1. In this embodiment, there are two lifting rings 2, which are welded to the baffle 1. After the foundation pit is backfilled, the baffle 1 is lifted upwards by the lifting rings 2 to remove and recycle the baffle 1.

[0037] The installation process of the baffle is as follows: Before backfilling the foundation pit, unfold the baffle 1 so that each plate 1 is in the same plane; then align the baffle 1 with the positioning step 61 to determine the installation position of the baffle 1; finally, connect the two ends of the limiting strip 3 to the limiting bolts 4 on the concrete outer wall 6, tighten the limiting nut 7 to fix the limiting strip 3, and the installation of the baffle 1 is completed.

[0038] After the foundation pit is backfilled, the crane hook is connected to the lifting ring 2. The crane lifts the baffle 1 upward through the lifting ring 2 to separate the baffle 1 from the concrete outer wall 6 and remove the baffle 1. After the baffle 1 is removed, the flat plate 11 is rotated to fold and store the baffle 1.

[0039] 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 device for early closure of a post-cast strip formwork of an external wall, comprising a concrete external wall (6) and a baffle (1), the concrete external wall (6) being provided with a post-cast strip, characterized in that, The baffle (1) is in sliding fit with the concrete outer wall (6), and the baffle (1) corresponds to the position of the post-cast strip; the baffle (1) comprises a plurality of flat plates (11), and adjacent two flat plates (11) are movably connected through a connecting assembly (5).

2. The exterior wall post-cast strip formwork advance closing device according to claim 1, characterized in that, The outer side of the concrete outer wall (6) is provided with vertically arranged positioning steps (61) located on both sides of the post-cast strip, and the two side edges of the baffle (1) are in sliding fit with the positioning steps (61).

3. The exterior wall post-cast strip formwork advance closure device according to claim 2, characterized in that, The outer side of the concrete outer wall (6) is provided with a plurality of limiting assemblies arranged side by side from top to bottom, and the limiting assemblies are in limiting fit with the outer surface of the baffle (1).

4. The exterior wall post-cast strip formwork advance closing device according to claim 3, characterized in that, The limiting assembly comprises a limiting strip (3) and a limiting bolt (4), the limiting bolt (4) is pre-buried in the concrete outer wall (6), the limiting strip (3) is in limiting fit with the outer surface of the baffle (1), and the limiting bolt (4) is connected with a limiting nut (7) through the end of the limiting strip (3).

5. The formwork device according to any one of claims 1 to 4, wherein the device is characterized by: The connecting assembly (5) comprises a first connecting pipe and a second connecting pipe, the first connecting pipe and the second connecting pipe are arranged on the upper and lower sides of the flat plate (11) respectively, and the first connecting pipe on one flat plate (11) is connected with the second connecting pipe on another flat plate (11) through a pin rod.

6. The formwork device according to any one of claims 1 to 4, wherein the device is characterized by: The connecting assembly (5) comprises an upper connecting seat (52) arranged on the upper side of the flat plate (11) and a lower connecting seat (53) arranged on the lower side of the flat plate (11), and the upper connecting seat (52) and the lower connecting seat (53) are movably connected through a connecting piece (51).

7. The exterior wall post-cast strip formwork advance closure device according to claim 6, characterized in that, The connecting piece (51) comprises a first connecting rod (511) and a second connecting rod (512) arranged in parallel, the first connecting rod (511) and the second connecting rod (512) are connected through a third connecting rod (513), the first connecting rod (511) is movably connected with the upper connecting seat (52), and the second connecting rod (512) is movably connected with the lower connecting seat (53).

8. The exterior wall post-cast strip formwork advance closure device according to claim 7, characterized in that, The upper side of the flat plate (11) is provided with an upper containing groove (112) in plug fit with the lower connecting seat (53); and the lower side of the flat plate (11) is provided with a lower containing groove (111) in plug fit with the upper connecting seat (52).

9. The formwork device according to any one of claims 1-4, 7, 8, characterized in that, The height of the baffle (1) is not less than the height of the concrete outer wall (6).

10. The exterior wall post-cast strip formwork advance closure device according to claim 9, characterized in that, The upper end of the baffle (1) is connected with a lifting ring (2).

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