An assembled suspended ceiling joist node structure with automatic locking function
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG NIANDAI DECORATION ENG CO LTD
- Filing Date
- 2025-08-26
- Publication Date
- 2026-07-21
Smart Images
Figure CN224532021U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of ceiling keel assembly technology, specifically to a prefabricated ceiling keel node structure with automatic locking function. Background Technology
[0002] Ceiling joists are the framework erected on the interior ceiling of a building, supporting the entire ceiling system much like a skeleton supports a human body. These joists are typically made of lightweight, high-strength materials such as light steel and aluminum alloy, and are interconnected through specific connectors, or node structures, forming the supporting grid for the entire ceiling. The node structure is the key component connecting the joists, ensuring a stable connection between them. Common forms include traditional welding and bolting connections, which serve to fix and position the ceiling during installation. With technological advancements, other connection methods such as external insertion, interlocking, snap-fit, and sliding connections have also been gradually adopted, improving the flexibility and stability of the joist connections.
[0003] The existing node structure lacks an effective automatic locking device during the connection of the keel, making it difficult to balance rapid installation and high stability.
[0004] Traditional keel joint structures typically rely on screws or pneumatic nail guns for fixing, making the installation process cumbersome. Furthermore, during use, the keel joints are prone to loosening due to external forces or vibrations, leading to instability in the ceiling structure and posing safety hazards. Once a problem occurs, disassembly requires removing each screw individually, further complicating the process.
[0005] In summary, it is necessary to develop a prefabricated ceiling keel node structure with automatic locking function to solve the above problems. Utility Model Content
[0006] To address the shortcomings of existing technologies, the technical solution adopted by this utility model is: a prefabricated ceiling keel node structure with automatic locking function, specifically comprising: The ceiling system consists of gypsum board, secondary keel, and main keel. The main keel has a self-locking mechanism on its outer surface for automatic external fixation. A snap-fit plate is installed on the lower outer surface of the self-locking mechanism, and a height adjustment mechanism is threaded onto its upper surface for adaptive adjustment of the keel's height. The gypsum board is installed below the secondary keel using several self-tapping screws. The main keel is installed below the ceiling via the self-locking mechanism and the height adjustment mechanism, with the secondary keel snapped onto the outer surface of the snap-fit plate. Both the main and secondary keels are made of thin extruded aluminum alloy profiles, achieving a 50%-60% weight reduction compared to galvanized steel keels of the same specifications while meeting load-bearing requirements. This results in lightweight yet high-strength construction. For residential ceilings, a typical 3m section weighs approximately 1.2kg, making it easy for an adult to lift and position for installation.
[0007] Furthermore, the node self-locking mechanism includes: The positioning plate has threaded holes on its inner wall and unlocking components installed on its outer surface. A pull rope is slidably connected to the inner wall of the positioning plate, and a limit tube is slidably connected to the outer surface of the pull rope. A pull rod is slidably connected to the inner wall of the limit tube, and a pull plate is fixed to one end of the pull rope. The positioning plate is used to fix and limit the main keel. Its shape is designed to easily engage with the outer surface of the main keel, and there is a certain distance between the lower surface of the positioning plate and the self-tapping screws. The positioning plate is made of 2mm-3mm thick galvanized steel sheet, integrally stamped, and its cross-sectional moment of inertia meets the requirements to bear the entire load of the main keel, secondary keel, and gypsum board, ensuring concentrated force and resistance to local deformation. The pull rope is used to pull the rotation of the pull plate, and the limit tube limits the sliding path of the pull rope. Figure 4 As shown, the side of the pull rod furthest from the unlocking component rests against the outer surface of the locking plate. A limiting tube also restricts the sliding path of the pull rod. This limiting tube is made of aluminum alloy with a PTFF-plated inner wall, reducing friction during rope sliding and maintaining its durability. The pull rod is made of magnetic material, with a semi-circular shape in the middle to facilitate finger insertion into the bending area and subsequent pulling. The pull rope is made of stainless steel wire, which is high-strength, tensile-resistant, and will not stretch or loosen due to repeated sliding or stress. It also has high surface hardness and good wear resistance, making it suitable for sliding; furthermore, it is corrosion-resistant, suitable for long-term use, and its surface is polished.
[0008] Furthermore, the node self-locking mechanism also includes: A locking plate is included, with a connecting spring installed on the side of the locking plate near the limiting tube. A connecting rod is rotatably connected to the inner wall of the locking plate, and limiting sleeves are rotatably connected to both sides of the locking plate. A self-locking component is slidably connected to the outer surface of the connecting rod. The limiting sleeves are located on both sides of the locking plate to limit its rotation and prevent it from sliding left and right along the outer surface of the connecting rod. The locking plate is made of stainless steel with a polished surface and high hardness, ensuring both locking rigidity and good corrosion resistance. The connecting rod and limiting sleeves are both made of 304 stainless steel with high surface hardness, making them corrosion-resistant, wear-resistant, and flexible in rotation. The connecting spring is made of stainless steel wire to ensure it does not loosen or break under long-term vibration and humid conditions.
[0009] Furthermore, the outer surface of the snap-fit plate is slidably connected to the inner surface of the secondary keel, the positioning plate is installed on the outer surface of the main keel, the side of the limiting tube near the connecting spring is installed on the outer surface of the positioning plate, and the end of the pull rope away from the pull plate is installed on one end of the pull rod.
[0010] Furthermore, the outer surface of the locking plate is fixedly connected to the outer surface of the pulling plate, the side of the connecting spring away from the locking plate is installed on the inner wall of the positioning plate, both ends of the connecting rod are installed on the side of the positioning plate near the pulling plate, and the limiting sleeve is fitted and fixedly connected to the outer surface of the connecting rod.
[0011] Furthermore, the unlocking component includes: A fixing block, wherein a magnetic block is installed on the inner wall of the fixing block.
[0012] Furthermore, the fixing block is installed on the outer surface of the card slot plate, and the magnetic blocks are symmetrically installed on both sides of the pull rod.
[0013] Furthermore, the height adjustment mechanism includes: A threaded pipe has a through hole on its outer surface, and a ceiling pipe is slidably connected to the outer surface of the threaded pipe. The outer surface of the ceiling pipe has an alignment hole. The ceiling pipe is installed below the ceiling to support the self-locking mechanism of the nodes and the main and secondary keels below.
[0014] Furthermore, the height adjustment mechanism also includes: A locating pin, the outer surface of which is threaded with a nut.
[0015] Furthermore, the outer surface of the threaded tube is threadedly connected to the threaded hole, and the outer surface of the locating pin is slidably connected to the inner walls of the through hole and the alignment hole, respectively.
[0016] Furthermore, the number of through holes and alignment holes corresponds one-to-one, and their sizes are consistent. Maintaining the same number and size of through holes and alignment holes ensures that the positioning pin is accurately inserted into the ceiling pipe and threaded pipe, thus fixing and limiting their movement.
[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This device features a self-locking mechanism at the nodes. In the initial state, the pull rod is magnetically attached to the unlocking component. When the main keel is fitted into the inner side of the locking plate, pressing the pull rod resets the connecting spring. After the pull rod disengages from the unlocking component, the spring's reset pulls the locking plate to rotate clockwise around the connecting rod, automatically securing the upper and lower surfaces of the main keel. This eliminates the need for manual fixing and avoids the cumbersome installation problems caused by traditional screw or pneumatic nail fixing methods.
[0018] 2. This device is designed with an unlocking component. When the worker pulls the lever, the pull plate enters the fixed block. The magnetic blocks on both sides attract the magnetic lever. Pulling the pull rope slides the locking plate and rotates it counterclockwise. The attraction force of the multiple magnetic blocks is greater than the tension of the connecting spring, causing the locking plate to detach from the outer surface of the main keel. The main keel can then slide along the inner side of the locking plate to adjust its position. After adjustment, it can be relocked. This solves the problems of disassembly trouble and main keel position adjustment difficulties caused by screws or pneumatic nails in traditional installation node structures. It further avoids construction inconvenience caused by installation position errors.
[0019] 3. This utility model incorporates a height adjustment mechanism, where the threaded tube is threadedly connected to the mounting plate, and the outer surface is fixedly connected to the ceiling pipe via positioning pins and nuts. Workers can adjust the depth of the threaded tube within the ceiling pipe and adjust the installation height of the main keel based on the number of aligned through holes and alignment holes. This solves the problem of insufficient flexibility in traditional installation methods when the ceiling structure is complex, and further avoids conflicts between the main keel and the ceiling facilities.
[0020] 4. This device is designed with a self-locking box, a self-locking plate, a push spring, and a self-locking groove. When the self-locking plate rotates to the designated position, the spring force pushes the self-locking plate into the self-locking groove, thereby achieving mechanical self-locking of the self-locking plate and the locking plate. This ensures that after the connecting spring is reset, the locking plate will not vibrate and rebound. It also further avoids the problem of the locking plate not being firmly clamped to the main keel due to impact or equipment vibration or other factors. Attached Figure Description
[0021] Figure 1 This is the front view of this utility model; Figure 2 This is a schematic diagram of the structure of the snap-fit plate of this utility model; Figure 3 This is a schematic diagram of the self-locking mechanism of the node of this utility model; Figure 4This is a cross-sectional view of the card slot plate of this utility model; Figure 5 This is a schematic diagram of the locking plate of this utility model; Figure 6 This is a structural schematic diagram of the self-locking component of this utility model; Figure 7 This is a cross-sectional view of the fixing block of this utility model; Figure 8 This is a schematic diagram of the height adjustment mechanism of this utility model; Figure 9 This is a cross-sectional view of the ceiling pipe of this utility model.
[0022] In the diagram: 1. Gypsum board; 2. Secondary keel; 3. Main keel; 4. Node self-locking mechanism; 41. Positioning plate; 42. Threaded hole; 43. Unlocking component; 431. Fixing block; 432. Magnetic block; 44. Pull rope; 45. Limiting tube; 46. Pull rod; 47. Pulling plate; 48. Locking plate; 49. Connecting spring; 401. Connecting rod; 402. Limiting sleeve; 403. Self-locking component; 4031. Self-locking box; 4032. Push spring; 4033. Self-locking plate; 4034. Self-locking groove; 5. Snap-fit plate; 6. Height adjustment mechanism; 61. Threaded tube; 62. Through hole; 63. Ceiling pipe; 64. Alignment hole; 65. Positioning pin; 66. Nut. Detailed Implementation
[0023] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical applications of the present invention, and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for a particular purpose. Example 1
[0024] Please see Figure 1 - Figure 6 This utility model provides a technical solution: a prefabricated ceiling keel node structure with automatic locking function, specifically including: The ceiling system consists of three components: 1. Gypsum board; 2. Secondary keel; and 3. The outer surface of the main keel 3 is equipped with a self-locking mechanism 4 for automatic external fixation. A snap-fit plate 5 is installed on the lower outer surface of the self-locking mechanism 4, and a height adjustment mechanism 6 is threaded onto the upper surface of the mechanism. This mechanism automatically adjusts the height of the keel. The gypsum board 1 is installed below the secondary keel 2 using several self-tapping screws. The main keel 3 is installed below the ceiling via the self-locking mechanism 4 and the height adjustment mechanism 6, with the secondary keel 2 snapped onto the outer surface of the snap-fit plate 5. Both the main keel 3 and the secondary keel 2 are made of aluminum alloy extruded profiles, which are relatively thin. While meeting load-bearing requirements, they are approximately 50%-60% lighter than galvanized steel keels of the same specifications, achieving lightweight yet high strength. Based on a commonly used 3m section for residential ceilings, a single section weighs approximately 1.2kg, making it easy for an adult to lift and position for installation.
[0025] The node self-locking mechanism 4 includes: The positioning plate 41 has a threaded hole 42 on its inner wall and an unlocking component 43 installed on its outer surface. A pull rope 44 is slidably connected to the inner wall of the positioning plate 41, and a limit tube 45 is slidably connected to the outer surface of the pull rope 44. A pull rod 46 is slidably connected to the inner wall of the limit tube 45, and a pull plate 47 is fixedly connected to one end of the pull rope 44. The positioning plate 41 is used to fix and limit the main keel 3. The shape of the positioning plate 41 is designed to easily engage with the outer surface of the main keel 3, and there is a certain distance between the lower surface of the positioning plate 41 and the self-tapping screw. The positioning plate 41 is made of 2mm-3mm thick galvanized steel sheet, integrally stamped, and its cross-sectional moment of inertia meets the requirements of bearing the entire load of the main keel 3, the secondary keel 2, and the gypsum board 1, and is responsible for concentrated force and resistance to local deformation. The pull rope 44 is used to pull the rotation of the pull plate 47, and the limit tube 45 limits the sliding path of the pull rope 44. Figure 4 As shown, the side of the pull rod 46 furthest from the unlocking component 43 rests against the outer surface of the locking plate 41. The limiting tube 45 also limits the sliding path of the pull rod 46. The limiting tube 45 is made of aluminum alloy with a PTFF-plated inner wall, which reduces friction during the sliding of the pull rope 44 and maintains the durability of the limiting tube 45. The pull rod 46 is made of magnetic material, and its middle part is semi-circular, making it easy for a person's fingers to insert into the curved area and pull the pull rod 46. The pull rope 44 is made of stainless steel wire rope, which is high in strength and tensile strength and will not stretch or loosen due to repeated sliding or stress. It also has high surface hardness and good wear resistance, making it suitable for sliding. It is also corrosion-resistant and suitable for long-term use. The surface is polished.
[0026] The node self-locking mechanism 4 also includes: A locking plate 48 is provided, with a connecting spring 49 installed on the side of the locking plate 48 near the limiting tube 45. A connecting rod 401 is rotatably connected to the inner wall of the locking plate 48, and limiting sleeves 402 are rotatably connected to both sides of the locking plate 48. A self-locking component 403 is slidably connected to the outer surface of the connecting rod 401. The limiting sleeves 402 are located on both sides of the locking plate 48 to limit the rotation of the locking plate 48 and prevent the locking plate 48 from sliding left and right along the outer surface of the connecting rod 401. The locking plate 48 is made of stainless steel plate with a polished surface and high hardness, ensuring both locking rigidity and good corrosion resistance. The connecting rod 401 and the limiting sleeves 402 are both made of 304 stainless steel with high surface hardness, making them corrosion-resistant, wear-resistant, and flexible in rotation. The connecting spring 49 is made of stainless steel wire to ensure that it will not loosen or break under long-term vibration and humid environments.
[0027] The outer surface of the snap-fit plate 5 is slidably connected to the inner surface of the secondary keel 2. The snap-fit plate 41 is installed on the outer surface of the main keel 3. The limiting tube 45 is installed on the outer surface of the snap-fit plate 41 on the side near the connecting spring 49. The end of the pull rope 44 away from the pull plate 47 is installed on the end of the pull rod 46.
[0028] The outer surface of the locking plate 48 is fixedly connected to the outer surface of the pulling plate 47. The side of the connecting spring 49 away from the locking plate 48 is installed on the inner wall of the positioning plate 41. Both ends of the connecting rod 401 are installed on the side of the positioning plate 41 near the pulling plate 47. The limiting sleeve 402 is fitted and fixedly connected to the outer surface of the connecting rod 401.
[0029] The self-locking component 403 includes: The inner walls of self-locking boxes 4031 and 4032 are fixedly connected to a push spring 4033, and one end of the push spring 4033 is fixedly connected to a self-locking plate 4034. The outer surface of the self-locking plate 4031 is slidably connected to a self-locking groove 4034. The self-locking box 4031 is installed on both sides of the locking plate 48. The surface of the self-locking plate 4031 near the connecting rod 401 is arc-shaped and fits against the outer surface of the connecting rod 401. The push spring 4033 has a tendency to push the self-locking plate 4034 towards the side closer to the connecting rod 401, and the end of the push spring 4033 away from the connecting rod 401 is fixedly connected to the inner wall of the self-locking plate 4033. The size and shape of the self-locking groove 4034 are consistent with a portion of the surface of the self-locking plate 4033.
[0030] The working principle is as follows: like Figure 3 As shown, the node self-locking mechanism 4 does not clamp and fix the main keel 3 in its initial state. Instead, the height adjustment mechanism 6 is installed below the ceiling and fixes the position of the node self-locking mechanism 4. Then, one side of the main keel 3 is pushed into the inside of the node self-locking mechanism 4, combined with... Figure 1 It can be seen that the posture of the main keel 3 after it is fixed is from Figure 2As can be seen, this is the posture of the main keel 3 after the node self-locking mechanism 4 fixes it.
[0031] In the initial state of the node self-locking mechanism 4, the pull rod 46 is attracted inside the unlocking component 43. When the outer surface of the main keel 3 is attached to the inner side of the locking plate 41, the operator presses the pull rod 46 to move it closer to the locking plate 41. Since the connecting spring 49 is in a stretched state at this time, when the pull rod 46 is removed from the inner side of the unlocking component 43, the connecting spring 49 will reset and pull the locking plate 48 and the pulling plate 47 to rotate clockwise around the outer surface of the connecting rod 401 until the upper and lower locking plates 48 are automatically fixed to the upper and lower surfaces of the main keel 3, achieving tight fixation without the need for additional manual fixation, thus avoiding the cumbersome installation process caused by relying on traditional screws or pneumatic nails.
[0032] As the locking plate 48 rotates clockwise around the outer surface of the connecting rod 401, it also drives the rotation of the self-locking components 403, namely the self-locking box 4031 and the self-locking plate 4033. During the rotation, the side of the self-locking plate 4033 closest to the connecting rod 401 slides against the outer surface of the connecting rod 401. When the self-locking plate 4033 rotates to its final position with the locking plate 48, it quickly enters the self-locking groove under the force of the push spring 4032. Inside 4034, a latch is made to secure the self-locking plate 4033, thereby fixing the self-locking plate 4033, the self-locking box 4031, and the locking plate 48 on one side. This ensures that after the connecting spring 49 is reset, the locking plate 48 will not spring back due to vibration. When it is necessary to unlock the locking plate 48 and the self-locking plate 4033, the operator can manually hook the self-locking plate 4033 out of the self-locking groove 4034. Then, the self-locking plate 4033 is lowered as the locking plate 48 rotates counterclockwise to achieve unlocking.
[0033] When installing the secondary keel 2, it can be snapped onto the upper surface of the snap-fit plate 5 for quick connection. The main keel 3 is the same size as the secondary keel 2 and has a U-shaped cross-section. The gypsum board 1 is installed below the secondary keel 2 using several self-tapping screws.
[0034] The main keel 3 needs to be fixed because it is the supporting structure of the entire ceiling system, bearing the main weight and load. Its stability and load-bearing capacity must be ensured. The secondary keel 2 only needs to be snapped because it mainly plays the role of refining support and providing installation. The force is relatively small. The snap-fit method can meet the installation and use requirements and allows for fine adjustment after installation to adapt to the installation requirements of the ceiling panel. At the same time, when adjusting the movement of the secondary keel 2, it will not cause the self-tapping screws installed later to come into contact with the lower surface of the clip plate 41. Example 2
[0035] Please see Figure 1 - Figure 9 This utility model provides a technical solution: based on embodiment one, the unlocking component 43 includes: A fixing block 431 is provided, and a magnetic block 432 is installed on the inner wall of the fixing block 431. The fixing block 431 is installed on the outer surface of the card plate 41, and the magnetic blocks 432 are symmetrically installed on both sides of the pull rod 46.
[0036] The adjustment mechanism 6 includes: A threaded pipe 61 has a through hole 62 on its outer surface. A ceiling pipe 63 is slidably connected to the outer surface of the threaded pipe 61. An alignment hole 64 is provided on the outer surface of the ceiling pipe 63. The ceiling pipe 63 is installed below the ceiling and is used to support the node self-locking mechanism 4 and the main keel 3 and secondary keel 2 below.
[0037] The working principle is as follows: When there is an error in the installation position of the main keel 3, the traditional installation node structure is very troublesome to disassemble because it is fixed with screws or pneumatic nails. Therefore, this device is designed with an unlocking component 43 to solve this problem.
[0038] When the installation position of the main keel 3 needs to be adjusted, the worker pulls the pull rod 46 away from the locking plate 41, so that the pull rod 46 enters the interior of the fixing block 431 and is located in the middle of the two magnetic blocks 432. Since the pull rod 46 and the magnetic blocks 432 are both strong magnets and there are many magnetic blocks 432, they can form a strong attraction force on the pull rod 46. When the pull rod 46 moves closer to the magnetic blocks 432, it will pull the pull rope 44 to slide along the inner wall of the limiting tube 45, and pull the pull plate 47 and the locking plate 48 to rotate counterclockwise around the outer surface of the connecting rod 401 through the pull rope 44. During the rotation, the locking plate 48 will stretch the connecting spring 49, because the attraction force of the multiple magnetic blocks 432 on the pull rod 46 is greater than the pulling force of the connecting spring 49 on the locking plate 48.
[0039] When the locking plate 48 detaches from the outer surface of the main keel 3, the main keel 3 is no longer fixed and limited. The operator can slide the main keel 3 left and right along the inner side of the locking plate 41. After adjusting to the appropriate position, the node self-locking mechanism 4 relocks the main keel 3.
[0040] The position of the main keel 3 can be quickly adjusted by unlocking component 43.
[0041] The adjustment mechanism 6 also includes: The locating pin 65 has a nut 66 threaded onto its outer surface.
[0042] The outer surface of the threaded tube 61 is threadedly connected to the threaded hole 42, and the outer surface of the locating pin 65 is slidably connected to the inner walls of the through hole 62 and the alignment hole 64, respectively.
[0043] The number of through holes 62 and the number of alignment holes 64 are one-to-one, and their sizes are consistent. The consistency of the number and size of through holes 62 and alignment holes 64 ensures that the positioning pin 65 is accurately inserted into the interior of the ceiling pipe 63 and the threaded pipe 61, and fixes and limits both of them.
[0044] The working principle is as follows: Different rooms or areas may have different floor heights due to architectural design, space occupied by various equipment and pipes installed on the ceiling. In order to avoid conflicts between the main keel 3 and these installations caused by differences in the height of equipment and pipes, and to ensure that there is enough space to accommodate the ceiling facilities after the main keel 3 is installed, the installation height of the main keel 3 needs to be adjusted in some cases to make full use of the space.
[0045] The bottom of the threaded tube 61 is threaded to the upper surface of the mounting plate 41, forming a fixed connection with the mounting plate 41. The outer surface of the threaded tube 61 is fixedly connected to the ceiling tube 63 via a positioning pin 65 and a nut 66. The ceiling tube 63 is fixed to the ceiling. Therefore, the main keel 3 can be fixed below the ceiling through the entire height adjustment mechanism 6 and the node self-locking mechanism 4. When the position of the main keel 3 needs to be adjusted according to the space utilization, the workers adjust the depth of the threaded tube 61 inside the ceiling tube 63 before installing the main keel 3. The more alignment holes 64 and through holes 62 on the outer surface of the threaded tube 61 are aligned, the deeper the threaded tube 61 is inside the ceiling tube 63. It can be deduced that the installation height of the main keel 3 is higher. The fewer the number of alignment holes 64 and through holes 62 on the outer surface of pipe 61, the shorter the threaded pipe 61 is inside the ceiling pipe 63. This further implies that the main keel 3 is installed at a lower height. Therefore, the installation height of the node self-locking mechanism 4 and the main keel 3 is adjusted according to the number of alignment holes 62 and alignment holes 64. Then, the positioning pin 65 is inserted into the hole where the through hole 62 and alignment hole 64 are aligned, and the nut 66 is tightened to fix it. By adjusting the installation height of the node self-locking mechanism 4 and the main keel 3 through the height adjustment mechanism 6, the problem of the main keel 3 conflicting with other facilities due to the lack of flexibility of traditional installation methods when the top structure is complex can be avoided. This design can flexibly adjust the height of the main keel 3 and avoid top obstacles.
[0046] During the process of aligning the through hole 62 and the alignment hole 64, it is necessary to ensure that the through hole 62 and the alignment hole 64 are always in the same vertical plane to avoid the situation where the positioning pin 65 cannot be inserted into the inner wall of the ceiling pipe 63 and the threaded pipe 61 for fixing due to misalignment of the through hole 62 and the alignment hole 64.
[0047] The workflow is as follows: First, in the initial state, the pull rod 46 is attracted into the unlocking component 43. When the main keel 3 is fitted into the inner side of the locking plate 41, pressing the pull rod 46 resets the connecting spring 49. After the pull rod 46 disengages from the unlocking component 43, the spring resets and pulls the locking plate 48 to rotate clockwise around the connecting rod 401, automatically fixing the upper and lower surfaces of the main keel 3. No additional manual fixing is required, avoiding the cumbersome installation problems caused by traditional screw or pneumatic nail fixing methods.
[0048] This device is designed with an unlocking component 43. When the worker pulls the pull rod 46, the pull plate enters the fixing block 431. The magnetic blocks 432 on both sides attract the magnetic rod, pulling the pull rope 44 to slide and pull the locking plate 48 to rotate counterclockwise. The attraction force of the multiple magnetic blocks 432 is greater than the tension of the connecting spring 49, causing the locking plate 48 to detach from the outer surface of the main keel 3. The main keel 3 can then slide along the inner side of the locking plate 41 to adjust its position, and then relock. This design solves the problems of disassembly trouble caused by screws or pneumatic nails for traditional installation nodes and the difficulty in adjusting the position of the main keel 3, further avoiding construction inconvenience caused by installation position errors.
[0049] Finally, this device uses a height adjustment mechanism 6, in which the threaded pipe 61 is threadedly connected to the positioning plate 41, and the outer surface is fixedly connected to the ceiling pipe 63 by the positioning pin 65 and nut 66. The operator can adjust the depth of the threaded pipe 61 in the ceiling pipe 63 and adjust the installation height of the main keel 3 according to the number of alignment holes 62 and alignment holes 64. This solves the problem of insufficient flexibility of traditional installation methods when the top structure is complex, and further avoids the problem of conflict between the main keel 3 and the top facilities.
[0050] 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 and related fields based on the embodiments of this utility model without creative effort should fall within the protection scope of this utility model. Structures, devices, and operating methods not specifically described and explained in this utility model, unless otherwise specified or limited, shall be implemented according to conventional means in the art.
Claims
1. A prefabricated ceiling keel node structure with automatic locking function, specifically comprising: The gypsum board (1), secondary keel (2), and main keel (3) are characterized in that: a node self-locking mechanism (4) is installed on the outer surface of the main keel (3), the node self-locking mechanism (4) is used to automatically fix the outside of the ceiling keel, a snap-fit plate (5) is installed on the lower outer surface of the node self-locking mechanism (4), and a height adjustment mechanism (6) is threadedly connected to the upper surface of the node self-locking mechanism (4), the height adjustment mechanism (6) is used to adaptively adjust the height of the keel.
2. The prefabricated ceiling keel node structure with automatic locking function according to claim 1, characterized in that: The node self-locking mechanism (4) includes: A positioning plate (41) is provided with a threaded hole (42) on its inner wall. An unlocking component (43) is installed on the outer surface of the positioning plate (41). A pull rope (44) is slidably connected to the inner wall of the positioning plate (41). A limit tube (45) is slidably connected to the outer surface of the pull rope (44). A pull rod (46) is slidably connected to the inner wall of the limit tube (45). A pull plate (47) is fixedly connected to one end of the pull rope (44).
3. The prefabricated ceiling keel node structure with automatic locking function according to claim 2, characterized in that: The node self-locking mechanism (4) also includes: A locking plate (48) is provided with a connecting spring (49) on the side of the locking plate (48) near the limiting tube (45). A connecting rod (401) is rotatably connected to the inner wall of the locking plate (48). Limit sleeves (402) are rotatably connected to both sides of the locking plate (48). A self-locking component (403) is slidably connected to the outer surface of the connecting rod (401).
4. The prefabricated ceiling keel node structure with automatic locking function according to claim 3, characterized in that: The outer surface of the snap-fit plate (5) is slidably connected to the inner surface of the secondary keel (2), the snap-fit plate (41) is installed on the outer surface of the main keel (3), the limiting tube (45) is installed on the outer surface of the snap-fit plate (41) near the connecting spring (49), and the end of the pull rope (44) away from the pull plate (47) is installed on the end of the pull rod (46).
5. The prefabricated ceiling keel node structure with automatic locking function according to claim 4, characterized in that: The outer surface of the locking plate (48) is fixedly connected to the outer surface of the pulling plate (47). The connecting spring (49) is installed on the inner wall of the positioning plate (41) on the side away from the locking plate (48). Both ends of the connecting rod (401) are installed on the side of the positioning plate (41) close to the pulling plate (47). The limiting sleeve (402) is fitted and fixedly connected to the outer surface of the connecting rod (401).
6. The prefabricated ceiling keel node structure with automatic locking function according to claim 3, characterized in that: The self-locking component (403) includes: A self-locking box (4031) is provided with a push spring (4032) fixed to its inner wall. One end of the push spring (4032) is fixed to a self-locking plate (4033), and the outer surface of the self-locking plate (4033) is slidably connected to a self-locking groove (4034).
7. The prefabricated ceiling keel node structure with automatic locking function according to claim 2, characterized in that: The unlocking component (43) includes: A fixing block (431) is provided with a magnetic block (432) installed on its inner wall. The fixing block (431) is installed on the outer surface of the card plate (41), and the magnetic block (432) is symmetrically installed on both sides of the pull rod (46).
8. The prefabricated ceiling keel node structure with automatic locking function according to claim 1, characterized in that: The height adjustment mechanism (6) includes: A threaded pipe (61) has a through hole (62) on its outer surface. A ceiling pipe (63) is slidably connected to the outer surface of the threaded pipe (61). An alignment hole (64) is provided on the outer surface of the ceiling pipe (63).
9. The prefabricated ceiling keel node structure with automatic locking function according to claim 8, characterized in that: The height adjustment mechanism (6) also includes: A locating pin (65) is provided, and a nut (66) is threaded onto the outer surface of the locating pin (65).
10. The prefabricated ceiling keel node structure with automatic locking function according to claim 9, characterized in that: The outer surface of the threaded tube (61) is threadedly connected to the threaded hole (42), and the outer surface of the positioning pin (65) is slidably connected to the inner wall of the through hole (62) and the alignment hole (64).