A civil air defense engineering post-cast strip sealing structure

Abstract

The utility model discloses a kind of civil air defence engineering post-cast strip closed structures, belong to building construction technical field, to solve the problem of slow post-cast strip formwork splicing, supporting adjustment difficulty and locking unreliable. The structure includes a pair of baffle and the X-shaped support of supporting. Baffle one end is equipped with dovetail groove, the other end is equipped with the clamping block with limit groove;Baffle is equipped with the locking mechanism of the push block and limit block by spring piece drive in, can make limit block automatic clamping into limit groove and complete locking. It also includes the rectangular support of fixed X-shaped support, it is composed of main body and the sliding bar that can slide in its sliding slot and guide slot, guide block is equipped on sliding bar, and sliding bar can be locked by bolt nut, the accurate adjustment and fixation of supporting width are realized. The utility model has the advantages of quick installation, stable connection, accurate adjustment, reliable support, can effectively guarantee construction quality and improve construction efficiency.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, and in particular to a closed structure for post-pouring strips in civil defense engineering. Background Technology

[0002] In large or ultra-long concrete structure projects, post-cast strips are temporary construction joints reserved to prevent harmful cracks from forming due to temperature changes, concrete shrinkage, and other factors. Especially in civil defense projects where the integrity and airtightness of the structure are extremely important, the construction quality of post-cast strips directly affects the final protective capability and safety of the project. The construction of post-cast strips requires the installation of temporary enclosure structures, i.e., formwork systems, on both sides. After the main structure concrete has solidified and shrunk, a second pour of concrete is carried out in the post-cast strip area.

[0003] Currently, in the construction of post-cast strips in civil defense projects, the commonly used closed structure is constructed using wooden or steel formwork, supported by timber or steel pipes. During construction, workers need to align the formwork on both sides and then fix it between the two formwork panels by cutting timber or adjusting the steel pipe supports. This traditional method relies entirely on the workers' on-site operation and experience, and has significant shortcomings.

[0004] Specifically, the adjustment process of its support system is cumbersome and the precision is difficult to guarantee. Workers need to repeatedly measure and adjust to ensure that the support length barely meets the design width of the post-pouring strip, which greatly reduces construction efficiency. More importantly, this support structure, which is fixed by simple bracing or wedging, has poor stability. During the impact and vibration of concrete pouring, the support is prone to displacement or even loosening, leading to deformation of the formwork. This not only seriously affects the forming dimensions and appearance quality of the post-pouring strip, but may also pose structural safety hazards to civil defense projects.

[0005] Therefore, how to provide a closed structure that is easy to install, precisely adjustable, and provides stable and reliable support to improve the construction efficiency and quality of post-pouring strips in civil defense projects is a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0006] In view of the problems existing in the post-cast strip enclosure structure of civil defense engineering, such as complex template splicing, poor connection stability, cumbersome support structure adjustment, low positioning accuracy, unreliable locking, and easy deformation of template, this utility model aims to provide a structurally improved post-cast strip enclosure structure for civil defense engineering that can effectively solve the above problems.

[0007] This utility model provides a closed structure for post-pouring strips in civil defense engineering, including paired baffles and X-shaped brackets that provide support between the baffles; the structure also includes a locking mechanism integrated on the baffles and a rectangular bracket for fixing the X-shaped brackets.

[0008] One end of the baffle has a dovetail groove, and the other end is fixedly connected to a locking block that slides with the dovetail groove. The locking block has a limiting groove for locking. The locking mechanism includes a push block that is slidably disposed in the second mounting groove inside the baffle, a limiting block fixedly connected to the push block, a spring piece that drives the push block to move, and a handle fixedly connected to the push block.

[0009] Furthermore, one end of the main body of the rectangular bracket and the distal end of the sliding rod that can slide inside it are respectively rotatably connected to two intersecting rods of the X-shaped bracket; the main body of the rectangular bracket is provided with a sliding groove and a guide groove for the sliding rod to slide; a guide block that can slide in the guide groove is fixedly connected to the sliding rod; the rectangular bracket is also provided with bolts and nuts for locking the sliding rod in position; the spring plate drives the push block to make the limiting block engage with the limiting groove to lock the baffle, and the extension and locking of the rectangular bracket are used to fix the unfolded state of the X-shaped bracket.

[0010] Preferably, a first mounting groove for mounting an X-shaped bracket is provided on the inner side of the baffle.

[0011] Preferably, the X-shaped bracket has multiple circular holes on its rods; the structure also includes a limiting post, which can be selectively inserted into the circular holes.

[0012] Preferably, the sliding direction of the push block is perpendicular to the direction in which the locking block is inserted into the dovetail groove.

[0013] Preferably, one end of the spring abuts against the inner wall of the second mounting groove, and the other end abuts against the push block.

[0014] Preferably, both the main body of the rectangular bracket and the slide rod are provided with through holes for the bolts to pass through.

[0015] Preferably, the guide block is fixedly connected to the end of the slide rod away from the rectangular support body.

[0016] Preferably, the handle extends through the side wall of the baffle and is exposed to the outside.

[0017] This utility model has the following beneficial effects: 1. This utility model solves the problems of complex splicing of post-pouring strip templates, reliance on tools, weak connection, and low installation and disassembly efficiency in the prior art by setting dovetail grooves on the baffle and using the limiting block on the push block driven by the spring to automatically lock into the limiting groove of the card block to achieve quick locking.

[0018] This invention solves the problems of inconvenient support structure adjustment, small applicable width range, poor support stability, and easy deformation during concrete pouring in the prior art by using an X-shaped bracket for width adjustment and a combined structure with a retractable rectangular bracket with built-in sliding rod and guide block that can be locked by bolts to accurately fix the support state. It achieves the technical effects of convenient and accurate support width adjustment, strong applicability, stable and reliable support, and ensuring the quality of post-pouring strip forming. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of a post-cast strip sealing structure for civil defense engineering proposed in this utility model; Figure 2 This is a schematic diagram of the X-shaped bracket for the closed structure of the post-cast strip in civil defense engineering proposed in this utility model; Figure 3 This is a schematic diagram of a spring sheet structure for a post-cast strip sealing structure in civil defense engineering proposed in this utility model; Figure 4 This is a schematic diagram of a rectangular support structure for a closed post-cast strip structure in civil defense engineering proposed in this utility model; Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0020] Legend: 1. Baffle; 2. Dovetail groove; 3. First mounting groove; 4. X-shaped bracket; 5. Locking block; 6. Second mounting groove; 7. Spring piece; 8. Push block; 9. Handle; 10. Limiting block; 11. Limiting groove; 12. Round hole; 13. Limiting post; 14. Rectangular bracket; 15. Bolt; 16. Slide groove; 17. Guide groove; 18. Slide rod; 19. Guide block; 20. Nut. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0022] Example: Please refer to Figures 1 to 5 This utility model provides a closed structure for post-cast strips in civil defense engineering, which aims to solve the technical problems in the prior art, such as the complex splicing structure of post-cast strip templates leading to low installation efficiency, difficulty in adjusting the support structure, and unreliable fixing.

[0023] like Figure 1 and Figure 2 As shown, the closed structure of the post-cast strip of the civil defense project includes a pair of baffles 1 and an X-shaped bracket 4 that provides support between the baffles 1. The two ends of the X-shaped bracket 4 are rotatably connected to the inner sides of the two baffles 1 respectively. The baffles 1 are used to form the lateral template of the post-cast strip, and the X-shaped bracket 4 is used to provide adjustable support between the two baffles 1 to adapt to post-cast strips of different widths. Specifically, the core structure of this embodiment includes a baffle quick-locking mechanism and a support adjustment and locking mechanism; The structure of the quick locking mechanism of the baffle is as follows: a dovetail groove 2 is opened at one end of the baffle 1, and a locking block 5 that slides with the dovetail groove 2 is fixedly connected to the other end. A locking groove 11 for locking is opened on the locking block 5. A second mounting groove 6 for accommodating the locking component is opened inside the baffle 1. The locking component includes a push block 8 that is slidably disposed in the second mounting groove 6, a limiting block 10 fixedly connected to the push block 8, a spring piece 7 that drives the push block 8 to move, and a handle 9 fixedly connected to the push block 8. One end of the spring piece 7 abuts against the inner wall of the second mounting groove 6, and the other end abuts against the push block 8. It always applies a spring force to the push block 8 to make the limiting block 10 fixed on it move toward the limiting groove 11. In the natural state, the spring piece 7 drives the push block 8 so that the limiting block 10 is locked into the limiting groove 11, thereby locking the two baffles 1 that are spliced ​​together. The structure of the support adjustment and locking mechanism is as follows: a first mounting groove 3 for mounting the X-shaped bracket 4 is opened on the inner side of the baffle 1. The X-shaped bracket 4 is rotatably connected in the first mounting groove 3. The mechanism also includes a rectangular bracket 14 for fixing the X-shaped bracket 4 in its unfolded state. One end of the main body of the rectangular bracket 14 and the far end of the slide rod 18 that can slide inside it are respectively rotatably connected to two intersecting rods of the X-shaped bracket 4. The main body of the rectangular bracket 14 is provided with a sliding groove 16 for the slide rod 18 to slide and a guide groove 17 for guiding. A guide block 19 that can slide in the guide groove 17 is fixedly connected to the slide rod 18. The cooperation between the guide block 19 and the guide groove 17 improves the stability of the slide rod 18's movement and prevents it from disengaging. The rectangular bracket 14 is also provided with bolts 15 and nuts 20 for locking the position of the slide rod 18. By tightening the bolts 15 and nuts 20, the slide rod 18 can be fixed relative to the main body of the rectangular bracket 14, thereby locking the unfolded angle of the entire X-shaped bracket 4.

[0024] To solve the above-mentioned technical problems, the core of the technical solution in this embodiment lies in the fact that the closed structure of the post-cast strip of the civil defense project achieves convenient installation and reliable support through a quick-locking mechanism and a support adjustment and locking mechanism integrated on the baffle 1. The internal structure and cooperation relationship of the quick-locking mechanism are described in detail below: Please refer to Figure 1 , Figure 3All components of the quick-locking mechanism of the baffle are integrated on the baffle 1. When the two baffles 1 are spliced, the locking block 5 fixedly connected to one baffle 1 slides into the dovetail groove 2 opened on the other baffle 1 along the docking direction. The locking block 5 is provided with a limiting groove 11 for locking. Inside the baffle 1 that mates with the dovetail groove 2, a second mounting groove 6 is correspondingly opened. A push block 8 is slidably arranged in the second mounting groove 6. A limiting block 10 is fixedly connected to the push block 8. The sliding direction of the push block 8 is perpendicular to the direction in which the locking block 5 is inserted into the dovetail groove 2. A handle 9 is fixedly connected to one end of the push block 8, and the handle 9 passes through the baffle 1. The sidewalls are exposed to the outside to facilitate the operator's application of force. The second mounting groove 6 also accommodates a spring piece 7. One end of the spring piece 7 abuts against the inner wall of the second mounting groove 6, and the other end abuts against the push block 8, thereby applying a continuous elastic force to the push block 8. In a natural state without external force intervention, the spring piece 7 pushes the push block 8 so that the position of the limiting block 10 can be engaged with the limiting groove 11 on the locking block 5 inserted into the dovetail groove 2. This locking structure of the limiting block 10 and the limiting groove 11 ensures the stability of the connection between the two baffles 1 after splicing, effectively preventing them from loosening or separating during use.

[0025] Based on the above embodiments, the present invention may further include the following preferred technical solutions: In a preferred embodiment, in order to facilitate the installation of the X-shaped bracket 4 and make the inner surface of the baffle 1 flatter, a first mounting groove 3 for installing the X-shaped bracket 4 is opened on the inner side of the baffle 1, and the two ends of the X-shaped bracket 4 are rotatably connected in the first mounting groove 3.

[0026] As another preferred embodiment, in order to achieve rapid coarse adjustment and pre-positioning of the support width, please refer to... Figure 2 and Figure 4 The X-shaped bracket 4 has multiple round holes 12 on its rods and also includes a limiting post 13. The limiting post 13 can be selectively inserted into different round holes 12 to initially fix the unfolding angle of the X-shaped bracket 4.

[0027] As another preferred embodiment, to ensure the reliability and stability of the locking action, please refer to... Figure 3 The sliding direction of the push block 8 in the second mounting groove 6 is perpendicular to the direction in which the locking block 5 is inserted into the dovetail groove 2. This orthogonal motion relationship avoids interference of the insertion and extraction force on the locking mechanism.

[0028] As another preferred embodiment, to clarify the assembly method of the spring piece 7 and ensure effective transmission of elastic force, please refer to... Figure 3 One end of the spring 7 abuts against the inner wall of the second mounting groove 6, and the other end abuts against the push block 8, thereby applying a continuous and stable thrust to the push block 8.

[0029] As another preferred embodiment, in order to reliably lock the length of the rectangular bracket 14, please refer to... Figure 4 and Figure 5 Both the main body of the rectangular bracket 14 and the slide rod 18 have through holes that align with each other. The bolt 15 passes through these through holes and engages with the nut 20 to fix the position of the slide rod 18.

[0030] As another preferred embodiment, in order to maximize the guiding effect of the guide block 19 and improve the sliding smoothness of the slide bar 18, please refer to... Figure 5 The guide block 19 is fixedly connected to the end of the slide rod 18 away from the main body of the rectangular bracket 14.

[0031] As another preferred embodiment, to facilitate the unlocking operation of the locking mechanism by the operator, please refer to... Figure 1 and Figure 3 The handle 9 penetrates the side wall of the baffle 1 and is exposed to the outside.

[0032] Working principle: When assembling and installing the baffle 1, first pull the handle 9. The handle 9 drives the push block 8 to slide in the second mounting groove 6 and compress the spring piece 7, so that the limit block 10 on the push block 8 moves back from its locked position. In this state, align the locking block 5 of one baffle 1 and fully insert it into the dovetail groove 2 of the other baffle 1. Then release the handle 9. Under the action of the spring piece 7, the push block 8 resets and drives the limit block 10 on it to automatically lock into the limit groove 11 of the locking block 5, thereby realizing a quick and stable locking connection between the two baffles 1.

[0033] When adjusting the support width, the width of the post-pouring strip is adapted by changing the unfolding angle of the X-shaped bracket 4. During the adjustment operation, first loosen the nut 20 and bolt 15 on the rectangular bracket 14. At this time, the slide rod 18 can slide freely in the slide groove 16 of the rectangular bracket 14, and the guide block 19 on it slides synchronously in the guide groove 17, ensuring the stability of the adjustment process. During this process, the limiting post 13 can be inserted into the appropriate round hole 12 on the X-shaped bracket 4 for preliminary positioning, and then precise adjustment can be made. After adjusting to the required width, tighten the nut 20 and bolt 15 to lock the position of the slide rod 18, thereby fixing the total length of the rectangular bracket 14, and thus locking the support state of the X-shaped bracket 4, providing a stable and reliable support force for the baffles 1 on both sides.

[0034] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A closed structure for post-cast strip in civil defense engineering, comprising paired baffles (1) and an X-shaped bracket (4) providing support between the baffles (1), wherein the two ends of the X-shaped bracket (4) are rotatably connected to the inner sides of the two baffles (1); characterized in that, One end of the baffle (1) is provided with a dovetail groove (2), and the other end is fixedly connected with a locking block (5) that slides with the dovetail groove (2). The locking block (5) is provided with a locking groove (11). The baffle (1) is provided with a second mounting groove (6) for accommodating a locking mechanism. The locking mechanism includes a push block (8) that slides in the second mounting groove (6), a limiting block (10) fixedly connected to the push block (8), a spring piece (7) that drives the push block (8) to move, and a handle (9) fixedly connected to the push block (8). The spring piece (7) drives the push block (8) so that the limiting block (10) is engaged in the limiting groove (11). It also includes a rectangular bracket (14) for fixing the X-shaped bracket (4) in the unfolded state. One end of the main body of the rectangular bracket (14) and the far end of the sliding rod (18) that can slide inside it are respectively rotatably connected to two intersecting rods of the X-shaped bracket (4). The main body of the rectangular bracket (14) is provided with a sliding groove (16) and a guide groove (17) for the sliding rod (18) to slide. A guide block (19) that can slide in the guide groove (17) is fixedly connected to the sliding rod (18). The rectangular bracket (14) is also provided with a bolt (15) and a nut (20) for locking the sliding rod (18) in position.

2. The closed structure for post-cast strips in civil defense engineering according to claim 1, characterized in that, The inner side of the baffle (1) has a first mounting groove (3) for mounting the X-shaped bracket (4).

3. The closed structure for post-cast strips in civil defense engineering according to claim 1, characterized in that, The X-shaped bracket (4) has multiple round holes (12) on its rods and also includes a limiting post (13), which can be selectively inserted into the round holes (12).

4. The closed structure for post-cast strips in civil defense engineering according to claim 1, characterized in that, The sliding direction of the push block (8) in the second mounting groove (6) is perpendicular to the direction in which the card block (5) is inserted into the dovetail groove (2).

5. The closed structure for post-cast strips in civil defense engineering according to claim 1, characterized in that, One end of the spring (7) abuts against the inner wall of the second mounting groove (6), and the other end abuts against the push block (8).

6. The closed structure for post-cast strips in civil defense engineering according to claim 1, characterized in that, Both the main body of the rectangular bracket (14) and the slide rod (18) are provided with through holes for the bolts (15) to pass through.

7. The closed structure for post-cast strips in civil defense engineering according to claim 1, characterized in that, The guide block (19) is fixedly connected to one end of the slide rod (18) away from the main body of the rectangular bracket (14).

8. The closed structure for post-cast strips in civil defense engineering according to claim 1, characterized in that, The handle (9) penetrates the side wall of the baffle (1) and is exposed to the outside.

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