A connecting device for prefabricated building wall panels

Abstract

This application belongs to the field of prefabricated building wall panel technology and discloses a connecting device for prefabricated building wall panels. It includes a first mounting groove and a second mounting groove respectively disposed on both sides of the wall panel. A first square tube is disposed in the first mounting groove, and a connecting block is slidably disposed within the first square tube. A second square tube is disposed in the second mounting groove, and a baffle is disposed within the second square tube. An opening is formed in the wall of the second square tube, and a through hole is formed in the center of the baffle. A bolt is movably disposed within the through hole. A threaded hole is formed on the connecting block, and limit grooves are provided on both the upper and lower sides of the connecting block. Limiting blocks connected to the first square tube are slidably disposed within the limit grooves. After two adjacent wall panels are connected to the ground, the bolt is moved to engage with the threaded hole of the connecting block. Then, the bolt is rotated to pull the connecting block into the second square tube. At this time, part of the connecting block is located inside the first square tube, and the other part is located inside the second square tube, achieving a stable connection between the two wall panels.

Description

Technical Field

[0001] This utility model relates to the field of prefabricated building wall panel technology, and in particular to a connecting device for prefabricated building wall panels. Background Technology

[0002] Buildings assembled on-site from prefabricated components are called prefabricated buildings. In prefabricated buildings, the installation of wall panels is of paramount importance. Prefabricated wall panels are made by prefabricating wall panels and various wall decoration components in the factory, and then transporting the finished wall panels to the construction site for assembly. The assembly is completed using a dry construction method. The prefabricated wall panel installation process allows for installation on bare walls, which is convenient and shortens the construction cycle.

[0003] Chinese utility model patent CN222275853U discloses a prefabricated building wall panel connection device, including a wall panel body. A first locking block is fixedly installed at the middle position of the left side of the wall panel body, and a first locking groove corresponding to the first locking block is opened on the right side of the wall panel body. A connecting mechanism is installed inside the first locking block. The first locking block of another wall panel is embedded into the first locking groove opened on the wall panel body, and then connected by the connecting mechanism.

[0004] Regarding the aforementioned technologies, the inventors believe the following drawbacks exist: During use, the device requires adjacent walls to move horizontally relative to each other so that the first locking block of one wall accurately engages with the first locking groove of another wall, achieving precise alignment. However, in current construction practices, the common method is to vertically hoist the wall panel to the ground, simultaneously connecting the bottom hole of the wall panel to the ground reinforcement bars to ensure a stable connection between the wall panel and the ground. This installation method makes it difficult for the wall panel to meet the device's horizontal movement requirements after installation, thus reducing the device's practicality in real-world applications. Utility Model Content

[0005] To address the aforementioned problems, this utility model provides a connection device for prefabricated building wall panels.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: A connecting device for prefabricated building wall panels includes a first mounting groove and a second mounting groove respectively disposed on both sides of the wall panel. A first square tube is disposed in the first mounting groove, and a connecting block is slidably disposed in the first square tube. A second square tube is disposed in the second mounting groove, and a baffle is disposed in the second square tube. An opening is formed on the tube wall of the second square tube on the side of the baffle near the middle of the wall. A through hole is formed in the middle of the baffle, and a bolt is movably disposed in the through hole. A threaded hole is formed on the connecting block to be helically engaged with the bolt. Limiting grooves are provided on both the upper and lower sides of the connecting block, and limiting blocks connected to the first square tube are slidably disposed in the limiting grooves.

[0007] By adopting the above technical solution, a first square tube, a second square tube, a connecting block, and bolts are set up. In the initial state, the connecting block is completely housed inside the first square tube, and the bolts are completely placed inside the second square tube. This facilitates the avoidance of damage and interference to the connecting components during the transportation and hoisting of the wall panels. After two adjacent wall panels are connected to the ground, the bolts can be moved so that their ends mate with the threaded holes on the connecting block. Then, by rotating the bolts, the connecting block can be smoothly pulled into the second square tube until the limiting block contacts the wall of the limiting groove. At this point, part of the connecting block is located inside the first square tube, and the other part is located inside the second square tube, achieving a stable connection between the two wall panels. This method is consistent with the current mainstream construction mode and has strong practicality and operability in practical applications.

[0008] Furthermore, a first connecting plate is provided on the side of the first square tube near the middle of the wall, and a second connecting plate is provided on the side of the second square tube near the middle of the wall. U-shaped pre-embedded steel bars are provided on the side of the first connecting plate away from the first square tube and the side of the second connecting plate away from the second square tube.

[0009] By adopting the above technical solution, a first connecting plate, a second connecting plate, and U-shaped embedded steel bars are set up. The first connecting plate and the second connecting plate are respectively connected to the first square tube and the second square tube, and with the help of the U-shaped embedded steel bars, the first square tube and the second square tube can be more firmly combined with the wall panel body.

[0010] Furthermore, the first connecting plate has two vertically spaced guide rods horizontally arranged on the side adjacent to the first square tube, and the connecting block has two guide holes, which are slidably connected to the corresponding guide rods.

[0011] By adopting the above technical solution, guide rods and guide holes are set, and the cooperation between the guide rods and guide holes provides a guiding function for the movement of the connecting block.

[0012] Furthermore, a threaded rod is provided at the end of the guide rod away from the first connecting plate, and a nut is helically provided on the threaded rod.

[0013] By adopting the above technical solution, a threaded rod and a nut are set. In the initial state, the connecting block is completely housed in the first square tube. The nut is screwed on the threaded rod to limit the position of the connecting block and prevent the connecting block from moving at will. Before connecting the wall panel, the nut needs to be removed from the threaded rod.

[0014] Furthermore, the length of the guide hole is less than the length of the first square tube, the length of the guide hole is the same as the length of the guide rod, and the end of the threaded rod is flush with the end of the first square tube.

[0015] Furthermore, a first magnet is provided at one end of the bolt near the second connecting plate, and a second magnet is provided on the second connecting plate that is attracted to the first magnet.

[0016] By adopting the above technical solution, a first magnet and a second magnet are set up. In the initial state, the mutual attraction between the first magnet and the second magnet can stably attract the bolt into the second square tube, preventing the bolt from shaking or falling off during the transportation and hoisting of the wall panel. When a connection operation is required, only a certain external force needs to be applied to overcome the magnetic force and move the bolt, which is convenient for operation.

[0017] Furthermore, the length of the bolt's threaded portion is greater than the sum of the distance from the side of the baffle adjacent to the second connecting plate to the side of the second square tube away from the middle of the wall and the length of the threaded rod.

[0018] By adopting the above technical solution, it is ensured that the bolt has sufficient length, and that the bolt can move and engage with the threaded hole during connection.

[0019] In summary, this utility model has the following beneficial effects: In this application, a first square tube, a second square tube, a connecting block, and bolts are provided. In the initial state, the connecting block is completely housed within the first square tube, and the bolts are completely placed within the second square tube, facilitating the avoidance of damage and interference to the connecting components during the transportation and hoisting of the wall panels. After two adjacent wall panels are connected to the ground, the bolts can be moved so that their ends engage with the threaded holes on the connecting block. Then, rotating the bolts allows the connecting block to be smoothly pulled into the second square tube until the limiting block contacts the wall of the limiting groove. At this point, part of the connecting block is located within the first square tube, and the other part is located within the second square tube, achieving a stable connection between the two wall panels. This method aligns with current mainstream construction methods and has strong practicality and operability in actual applications. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention installed on the wall panel according to an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0022] Figure 3 yes Figure 2 A sectional view;

[0023] Figure 4 This is a schematic diagram of the structure of the first square tube according to an embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of the internal structure of the first square tube and connecting block according to an embodiment of this utility model;

[0025] Figure 6 This is a schematic diagram of the structure of the second square tube according to an embodiment of the present invention;

[0026] Figure 7 This is a schematic diagram of the internal structure of the second square tube in this embodiment of the present invention.

[0027] In the diagram: 10. First mounting groove; 11. Second mounting groove; 20. First square tube; 21. Connecting block; 22. Threaded hole; 23. Limiting groove; 24. Limiting block; 30. Second square tube; 31. Baffle; 32. Opening; 33. Through hole; 34. Bolt; 35. First magnet; 36. Second magnet; 40. First connecting plate; 41. Second connecting plate; 42. U-shaped embedded steel bar; 43. Guide rod; 44. Threaded rod; 45. Nut. Detailed Implementation

[0028] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0029] like Figure 1-7As shown in the embodiment of this application, a connecting device for prefabricated building wall panels is disclosed, including a first square tube 20, a second square tube 30, a connecting block 21, and a bolt 34. A connecting hole for connecting to reinforcing bars on the ground is provided at the bottom of the wall. Two first mounting grooves 10 and two second mounting grooves 11 are provided on both sides of the wall panel. The first square tube 20 is disposed within the first mounting groove 10, with its end flush with the side of the wall. The connecting block 21 is slidably disposed within the first square tube 20, and the second square tube 30 is disposed within the second mounting groove 11, with its end flush with the side of the wall. A baffle 31 is provided within the second square tube 30, with a through hole 33 in the middle of the baffle 31. A bolt 34 is movably disposed within the through hole 33. A threaded hole 22 is provided on the connecting block 21 that screws into the bolt 34. When the bolt 34 is connected to the threaded hole 22, rotating the bolt 34 causes the connecting block 21 to move. The second square tube 30 has an opening 32 on its wall near the middle of the wall on the side of the baffle 31, allowing workers to operate the bolt 34 with a wrench. The connecting block 21 has limit grooves 23 on both its upper and lower sides, with a limit block 24 connected to the first square tube 20 slidingly positioned within each groove. Initially, the connecting block 21 is completely retracted into the first square tube 20, and the bolt 34 is completely placed within the second square tube 30, preventing damage and interference to the connecting components during transport and hoisting of the wall panels. After the two adjacent wall panels are connected to the ground (the connection method between the wall panels and the ground is within the scope of existing technology and will not be elaborated upon here), the bolt 34 can be moved so that its end engages with the threaded hole 22 on the connecting block 21. Then, rotating the bolt 34 smoothly pulls the connecting block 21 into the second square tube 30 until the limit block 24 contacts the groove wall of the limit groove 23. The connecting block 21 and bolt 34 then tighten the two wall panels horizontally. At this point, part of the connecting block 21 is located inside the first square tube 20, and the other part is located inside the second square tube 30, thus restricting the horizontal direction of the two wall panels. This achieves a stable connection between the two wall panels. This method aligns with current mainstream construction practices and has strong practicality and operability in real-world applications.

[0030] Specifically, a first connecting plate 40 is provided on the side of the first square tube 20 near the middle of the wall, and a second connecting plate 41 is provided on the side of the second square tube 30 near the middle of the wall. U-shaped embedded steel bars 42 are provided on both the side of the first connecting plate 40 away from the first square tube 20 and the side of the second connecting plate 41 away from the second square tube 30. By connecting the first connecting plate 40 and the second connecting plate 41 to the first square tube 20 and the second square tube 30 respectively, and in conjunction with the U-shaped embedded steel bars 42, the first square tube 20 and the second square tube 30 can be more firmly bonded to the wall panel, significantly improving the anchorage strength of the first square tube 20 and the second square tube 30 within the wall panel. This prevents relative displacement or separation between the first square tube 20 and the second square tube 30 and the wall panel under stress, ensuring the overall stability and structural safety of the wall panel connection.

[0031] During setup, two vertically spaced guide rods 43 are horizontally arranged on the side of the first connecting plate 40 adjacent to the first square tube 20. The connecting block 21 has two guide holes, which are slidably connected to the corresponding guide rods 43. The cooperation between the guide rods 43 and the guide holes provides guidance for the movement of the connecting block 21, ensuring that the connecting block 21 always moves smoothly in the horizontal direction and guaranteeing the accurate alignment of the connecting block 21 and the bolt 34. A threaded rod 44 is provided at the end of the guide rod 43 away from the first connecting plate 40, and a nut 45 is screwed onto the threaded rod 44. In the initial state, the connecting block 21 is completely retracted into the first square tube 20, and the nut 45 is screwed onto the threaded rod 44 to limit the position of the connecting block 21, preventing it from moving arbitrarily. Before connecting the wall panel, the nut 45 needs to be removed from the threaded rod 44.

[0032] In the specific setup, the length of the guide hole is less than the length of the first square tube 20, and the length of the guide hole is the same as the length of the guide rod 43. The end of the threaded rod 44 is flush with the end of the first square tube 20. The flush alignment of the end of the threaded rod 44 with the end of the first square tube 20 prevents the threaded rod 44 from protruding during wall panel installation, thus avoiding interference or damage. A first magnet 35 is provided at the end of the bolt 34 near the second connecting plate 41, and a second magnet 36, attracted to the first magnet 35, is provided on the second connecting plate 41. In the initial state, the mutual attraction between the first magnet 35 and the second magnet 36 stably attracts the bolt 34 into the second square tube 30, preventing the bolt 34 from shaking or falling off during wall panel transportation and hoisting. When connection is required, only a certain external force needs to be applied to overcome the magnetic force and move the bolt 34, facilitating operation. The length of the threaded portion of the bolt 34 is greater than the sum of the distance from the side of the baffle 31 near the second connecting plate 41 to the side of the second square tube 30 furthest from the middle of the wall and the length of the threaded rod 44. During connection, the bolt 34 moves to engage with the threaded hole 22. During the connection operation, as the bolt 34 moves from its initial position toward the connecting block 21, it has sufficient travel to engage with the threaded hole 22 on the connecting block 21 and achieve a spiral connection. This ensures that the bolt 34 maintains a reliable engagement with the threaded hole 22 throughout the entire process of pulling the connecting block 21 to the predetermined position, avoiding problems such as insufficient bolt length leading to incomplete docking or insufficient connection strength. This ensures smooth wall panel connection operations and reliable connection structure.

[0033] The operating principle of the connection device for prefabricated building wall panels in this embodiment is as follows: Check the wall panel condition to ensure that the connecting block 21 is fully housed within the first square tube 20 in the initial state. The bolt 34 is stably positioned within the second square tube 30 under the attraction of the first magnet 35 and the second magnet 36, and the nut 45 on the threaded rod 44 is tightened to fix the position of the connecting block 21. Simultaneously, confirm that the connection hole at the bottom of the wall panel corresponds to the position of the ground reinforcement. First, hoist one wall panel into place, ensuring precise alignment and fixation between the connection hole at the bottom of the wall panel and the ground reinforcement. Then, unscrew the nut 45 on the threaded rod 44 inside the first square tube 20 to release the initial restriction on the connecting block 21. Next, hoist another wall panel into place. Through the opening 32 on the second square tube 30, apply external force to overcome the attraction of the first magnet 35 and the second magnet 36, pushing the bolt 34 towards the first square tube 20 and precisely aligning it with the threaded hole 22 on the connecting block 21 before screwing it in. Next, use a wrench to turn bolt 34. Under the action of the threaded engagement, pull the connecting block 21 to move along the guide rod 43 towards the second square tube 30. Until the limiting grooves 23 on the upper and lower sides of the connecting block 21 contact the groove wall of the limiting block 24, at which point the connecting block 21 is partially located in the first square tube 20 and partially embedded in the second square tube 30, thus achieving a stable connection between the two wall panels.

[0034] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected by this utility model. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A connecting device for use in fabricated building wall panels, characterised in that: The system includes a first mounting groove (10) and a second mounting groove (11) respectively disposed on both sides of the wall panel. A first square tube (20) is disposed in the first mounting groove (10), and a connecting block (21) is slidably disposed in the first square tube (20). A second square tube (30) is disposed in the second mounting groove (11), and a baffle (31) is disposed in the second square tube (30). An opening (32) is opened on the tube wall of the second square tube (30) on the side of the baffle (31) near the middle of the wall. A through hole (33) is opened in the middle of the baffle (31), and a bolt (34) is movably disposed in the through hole (33). A threaded hole (22) is opened on the connecting block (21) to be screwed into the bolt (34). Limiting grooves (23) are provided on both the upper and lower sides of the connecting block (21), and a limiting block (24) connected to the first square tube (20) is slidably disposed in the limiting groove (23).

2. A connecting device for fabricated building wall panels according to claim 1 characterised in that: A first connecting plate (40) is provided on the side of the first square tube (20) near the middle of the wall, and a second connecting plate (41) is provided on the side of the second square tube (30) near the middle of the wall. U-shaped pre-embedded steel bars (42) are provided on the side of the first connecting plate (40) away from the first square tube (20) and the side of the second connecting plate (41) away from the second square tube (30).

3. A connecting device for use in a fabricated building wall panel according to claim 2, characterised in that: The first connecting plate (40) has two vertically spaced guide rods (43) horizontally arranged on the side near the first square tube (20), and the connecting block (21) has two guide holes, which are slidably connected to the corresponding guide rods (43).

4. A connecting device for use in a fabricated building wall panel according to claim 3, characterised in that: The guide rod (43) has a threaded rod (44) at the end away from the first connecting plate (40), and a nut (45) is screwed onto the threaded rod (44).

5. A connecting device for use in a fabricated building wall panel according to claim 4, characterised in that: The length of the guide hole is less than the length of the first square tube (20), the length of the guide hole is the same as the length of the guide rod (43), and the end of the threaded rod (44) is flush with the end of the first square tube (20).

6. A connecting device for fabricated building wall panels according to claim 2, characterised in that: A first magnet (35) is provided at one end of the bolt (34) near the second connecting plate (41), and a second magnet (36) is provided on the second connecting plate (41) to attract the first magnet (35).

7. A connecting device for prefabricated building wall panels according to claim 5, characterized in that: The length of the threaded portion of the bolt (34) is greater than the sum of the distance from the side of the baffle (31) adjacent to the second connecting plate (41) to the side of the second square tube (30) away from the middle of the wall and the length of the threaded rod (44).

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