Suspended ceiling system suitable for fabricated building and capable of being rapidly installed and repaired in partitioned mode

Abstract

The invention relates to the technical field of indoor suspended ceilings, in particular to a suspended ceiling system suitable for a fabricated building and capable of being rapidly installed and repaired in a partitioned mode. Comprising a plurality of main keels and a plurality of auxiliary keels, the main keels are detachably connected with a plurality of fixing modules distributed at equal intervals and a plurality of mounting parts distributed at equal intervals, the mounting parts are rotationally connected with symmetrically-distributed connecting rings, the symmetrically-distributed connecting rings are jointly and fixedly connected with mounting blocks, and the mounting blocks are fixedly connected with the fixing modules. A connecting assembly is arranged on the mounting block, and the mounting block is provided with a first fixing block and a second fixing block through the connecting assembly on the mounting block. The auxiliary keel is fixed through relative movement of the first fixing block and the second fixing block, the auxiliary keel is changed into a horizontal state from a vertical state by means of the symmetrical connecting rings, the possibility that the auxiliary keel collides with the adjacent auxiliary keel is reduced, meanwhile, the requirement for the installation space is reduced, installation of narrow areas such as wall edges, wall corners and the periphery of a pipeline is more convenient, and the installation efficiency is improved. And the labor intensity is reduced.

Description

Technical Field

[0001] This invention relates to the field of indoor ceiling technology, and in particular to a ceiling system suitable for prefabricated buildings that can be installed and repaired quickly in sections. Background Technology

[0002] In the field of prefabricated buildings and interior decoration, light steel keel ceiling systems are widely used due to their convenient construction and stable structure. In existing technologies, traditional ceiling systems typically employ a layered assembly structure, mainly consisting of a main keel fixed to the building's ceiling by hangers, and secondary keels arranged perpendicularly to the main keel. During installation, the main keel must be installed first, and then specialized hangers (or "connectors") are used to connect the secondary keels to the main keel. These hangers typically have an upper clip or suspension on the main keel, and a lower slot or channel for the secondary keels to pass through.

[0003] This "primary first, secondary later" installation logic has revealed many inherent flaws in practical applications: First, the installation process is linearly dependent, and the secondary keels must be inserted sequentially, making parallel operation impossible and limiting efficiency. Second, when the main keel is close to the wall, the space for inserting the secondary keels is limited, making operation difficult and labor-intensive. Third, during installation, the secondary keels are prone to collisions with the already installed keels, causing component deformation or displacement, which seriously affects the overall flatness of the keel frame. Summary of the Invention

[0004] To overcome the shortcomings mentioned in the background art, a ceiling system that can be quickly installed and repaired in sections and is suitable for prefabricated buildings is provided.

[0005] The technical solution of the present invention is as follows: a ceiling system suitable for prefabricated buildings that can be quickly installed and repaired in sections, comprising: a plurality of main keels and a plurality of secondary keels, wherein the secondary keels are provided with slots, and the main keels are detachably connected to a plurality of equally spaced fixing modules and a plurality of equally spaced mounting components, wherein the mounting components are rotatably connected to symmetrically distributed connecting rings, and the symmetrically distributed connecting rings are jointly fixed to mounting blocks, wherein the mounting blocks are provided with connecting components, and the mounting blocks are provided with first fixing blocks and second fixing blocks through the connecting components thereon, wherein the connecting components are used to change the relative positions of the first fixing blocks and the second fixing blocks to fix the secondary keels, and the mounting components and the corresponding connecting rings are jointly provided with fixing components, wherein the fixing components are used to lock the relative positions of the connecting rings and the mounting components.

[0006] Preferably, the fixing component includes two fixing pins symmetrically distributed, the two fixing pins being slidably connected through to the corresponding connecting rings, and a return tension spring being fixed between the fixing pins and the corresponding connecting rings. The mounting component is provided with two sets of limiting holes, each set containing several limiting holes, which are used to limit the fixing pins.

[0007] Preferably, the included angle between the central axes of the two corresponding limiting holes on the same mounting component is 90°.

[0008] Preferably, the connecting assembly includes a movable rod disposed on a corresponding mounting block, the movable rod having an external thread, the movable rod passing through a corresponding first fixing block and being fixedly connected to a corresponding second fixing block, the first fixing block being rotatably connected to a mounting ring, the mounting ring being slidably connected to the movable rod, the mounting ring being rotatably connected to a first threaded sleeve, the first threaded sleeve being threadedly connected to the external thread on the corresponding movable rod.

[0009] Preferably, the connecting assembly further includes a permanent magnet, which is fixed to the corresponding first fixing block. The mounting ring is provided with an arc-shaped through hole, and the permanent magnet slides within the arc-shaped through hole. The first threaded sleeve drives the first fixing block to rotate through the permanent magnet.

[0010] Preferably, the width of the first fixing block and the second fixing block is A, the width of the secondary keel groove is B, and A < B; the length of the first fixing block and the second fixing block is C, and the inner width of the secondary keel is D, and C < D.

[0011] Preferably, the central angle corresponding to the arc-shaped through hole is 90°.

[0012] Preferably, the system further includes a plurality of adjustment components, which are disposed on the corresponding mounting blocks. The adjustment components are used to change the relative position of the corresponding moving rods. Each adjustment component includes a connecting shell, which is slidably connected to the corresponding mounting block. A second threaded sleeve is rotatably connected to the side of the connecting shell near the main keel. The second threaded sleeve is threadedly connected to the external thread on the corresponding moving rod. The moving rod is slidably connected to the connecting shell.

[0013] Preferably, a fixing ring is fixedly connected to the side of the mounting block away from the main keel, and a screw is provided through the fixing ring. The screw is threadedly connected to the corresponding connecting shell, and the connecting shell is slidably connected to both the fixing ring and the mounting block.

[0014] Preferably, the diameter of the circumcircle projected onto the connecting shell by the second thread is not greater than the diameter of the connecting shell.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention fixes the secondary keel by the relative movement of the first fixing block and the second fixing block, and turns it from vertical to horizontal with the help of symmetrical connecting rings, reducing the possibility of collision between the secondary keel and adjacent secondary keels, while reducing the requirements for installation space, making installation in narrow areas such as wall sides, corners and pipes more convenient, and reducing labor intensity.

[0016] By rotating each of the second threaded sleeves, the vertical height of each second fixing block can be controlled independently and precisely, so that the lower surfaces of all the second fixing blocks tend to be on the same horizontal plane, thereby improving the levelness of the secondary keel and ensuring the overall flatness after the ceiling is completed. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the connecting ring and mounting block of the present invention; Figure 3 This is a three-dimensional structural cross-sectional view of the connecting ring of the present invention; Figure 4 This is a three-dimensional structural cross-sectional view of the mounting component of the present invention; Figure 5 This is a three-dimensional structural diagram of the mounting ring and the first threaded sleeve of the present invention; Figure 6 This is a three-dimensional sectional view of the mounting ring and the first threaded sleeve of the present invention; Figure 7 This is an exploded three-dimensional view of the first fixing block and mounting ring of the present invention; Figure 8 This is a three-dimensional structural cross-sectional view of the connecting shell and fixing ring of the present invention.

[0018] The markings in the diagram are as follows: 1-Main keel, 2-Secondary keel, 3-Fixing module, 4-Mounting component, 5-Connecting ring, 6-Mounting block, 7-First fixing block, 8-Second fixing block, 9-Fixing pin, 10-Limiting hole, 13-Moving rod, 14-Mounting ring, 15-First threaded sleeve, 16-Permanent magnet, 17-Arc-shaped hole, 18-Connecting shell, 19-Second threaded sleeve, 20-Fixing ring, 21-Screw. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and the accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concept of the invention. Example 1

[0020] This embodiment addresses the issues of existing keel systems, which require a sequential installation of main keels followed by secondary keels, and the inability to perform parallel operations, resulting in low overall efficiency. Furthermore, when the main keel is near a wall, the space for the secondary keel to penetrate is limited, making operation difficult and labor-intensive. Additionally, the secondary keel is prone to colliding with already installed keels during installation, causing component deformation or displacement and severely affecting the overall flatness of the keel frame. Therefore, this embodiment provides a modular, quick-installation, and repairable ceiling system suitable for prefabricated buildings.

[0021] A modular, quick-installation, and repairable ceiling system suitable for prefabricated buildings, such as... Figures 1-4 As shown, it includes: several main keels 1 and several secondary keels 2. The secondary keels 2 are provided with slots. Several fixed modules 3 and several mounting parts 4 are detachably connected to the main keels 1 at equal intervals. The mounting parts 4 are rotatably connected to symmetrically distributed connecting rings 5. The symmetrically distributed connecting rings 5 ​​are jointly fixed to the mounting blocks 6. The mounting blocks 6 are provided with connecting components. The mounting blocks 6 are provided with first fixing blocks 7 and second fixing blocks 8 through the connecting components. The connecting components are used to change the relative position of the first fixing blocks 7 and the second fixing blocks 8 to fix the secondary keels 2. The mounting parts 4 and the corresponding connecting rings 5 ​​are jointly provided with fixing components. The fixing components are used to lock the relative position of the connecting rings 5 ​​and the mounting parts 4.

[0022] In the above scheme, the specific number of main keel 1 and secondary keel 2 is selected by the staff. In actual use, the main keel 1 and secondary keel 2 are vertically distributed, and all secondary keels 2 are located below all main keels 1. The fixing module 3 is an existing device, and its working principle will not be described in detail in this article. It is used to fix the main keel 1 to the roof. The number of mounting parts 4 on the same main keel 1 is selected by the staff. The mounting parts 4 and the connecting rings 5 ​​are provided with slots on the lower side, so that the mounting parts 4 can be inserted into the corresponding main keel 1. The mounting parts 4 are provided with threaded holes on the upper side, so that the mounting parts 4 can be fixed to the main keel 1 with bolts in actual use. The mounting block 6 is located between the two corresponding connecting rings 5, and the two connecting rings 5 ​​and the mounting block 6 rotate synchronously.

[0023] like Figure 3 and Figure 4 As shown, the fixing component includes two fixing pins 9 symmetrically distributed. The two fixing pins 9 are respectively slidably connected to the corresponding connecting rings 5. A reset tension spring is fixed between the fixing pins 9 and the corresponding connecting rings 5. The mounting component 4 is provided with two sets of limiting holes 10. The number of limiting holes 10 in each set is several. The limiting holes 10 are used to limit the fixing pins 9.

[0024] In the above scheme, the two fixing pins 9 are symmetrically distributed front and back, and the angle between the central axis of the fixing pin 9 and the central axis of the corresponding mounting block 6 is a right angle; the number of each set of limiting holes 10 is three, and they are arranged on the corresponding mounting part 4 in the order of left to right. The reset spring between the fixing pin 9 and the corresponding connecting ring 5 is always in a charged state. When the connecting ring 5 is not rotated, the fixing pin 9 is located in the upper limiting hole 10.

[0025] like Figure 4 As shown, the included angle between the central axes of the two corresponding limiting holes 10 on the same mounting part 4 is 90°.

[0026] In the above scheme, the position of the limiting hole 10 is further defined to ensure that the mounting block 6 can be properly fixed after rotating 90°.

[0027] like Figure 2 , Figures 5-7 As shown, the connecting assembly includes a movable rod 13, which is disposed on a corresponding mounting block 6. The movable rod 13 has an external thread and passes through a corresponding first fixing block 7 and is fixedly connected to a corresponding second fixing block 8. The first fixing block 7 is rotatably connected to a mounting ring 14, which is slidably connected to the movable rod 13. The mounting ring 14 is rotatably connected to a first threaded sleeve 15, which is threadedly connected to the external thread on the corresponding movable rod 13. The connecting assembly also includes a permanent magnet 16, which is fixedly connected to the corresponding first fixing block 7. The first threaded sleeve 15 is used to drive the first fixing block 7 to rotate through the permanent magnet 16. The mounting ring 14 has an arc-shaped through hole 17, in which the permanent magnet 16 slides.

[0028] In the above scheme, in this embodiment, the movable rod 13 is fixedly connected to the corresponding mounting block 6, and the movable rod 13 is provided with symmetrically distributed arc-shaped surfaces, and the external thread of the movable rod 13 is located on its arc-shaped surface; the mounting ring 14 is located on the side of the corresponding first fixing block 7 near the main keel 1; the first threaded sleeve 15 is located on the side of the corresponding mounting ring 14 near the main keel 1; the first threaded sleeve 15 is made of iron material, so that the permanent magnet 16 can be attracted to the corresponding first threaded sleeve 15, and the permanent magnet 16 is moved by the first threaded sleeve 15; when the first threaded sleeve 15 is not rotated, the permanent magnet 16 is located at the rear end of the corresponding arc-shaped through hole 17.

[0029] like Figure 2 As shown, the width of the first fixing block 7 and the second fixing block 8 is A, the minimum width of the slot of the secondary keel 2 is B, and A < B; the length of the first fixing block 7 and the second fixing block 8 is C, and the maximum width of the slot of the secondary keel 2 is D, and C < D.

[0030] In the above scheme, the dimensions of the first fixing block 7 and the second fixing block 8 are limited to ensure that the first fixing block 7 and the second fixing block 8 can enter the secondary keel 2. At the same time, after the second fixing block 8 is rotated 90°, it is ensured that the first fixing block 7 and the second fixing block 8 can fix the secondary keel 2.

[0031] like Figure 7 As shown, the central angle corresponding to the arc-shaped through hole 17 is 90°, so that after the first threaded sleeve 15 drives the permanent magnet 16 to rotate 90°, the permanent magnet 16 is limited by the arc-shaped through hole 17 and cannot move.

[0032] The specific workflow of the above scheme is as follows: The process of fixing the secondary keel 2 by the first fixing block 7 and the corresponding second fixing block 8 is as follows: Rotate the first threaded sleeve 15 ( Figure 1 The left-middle view is the reference view, and the rotation direction is counterclockwise. During the rotation, the first threaded sleeve 15 drives the first fixed block 7 to rotate synchronously through the permanent magnet 16 (the permanent magnet 16 moves downward along the arc hole 17). When the first fixed block 7 rotates 90° (that is, after the first fixed block 7 and the second fixed block 8 are perpendicularly distributed), the permanent magnet 16 is limited by the arc hole 17 and cannot move.

[0033] When the first fixing block 7 rotates 90°, as the first threaded sleeve 15 continues to rotate, the first threaded sleeve 15 and the permanent magnet 16 move relative to each other. At the same time, during this process, the first threaded sleeve 15 drives the mounting ring 14 and all the parts connected to it to move synchronously to the right along the moving rod 13, increasing the distance between the first fixing block 7 and the corresponding second fixing block 8, thereby achieving the fixation between the first fixing block 7 and the second fixing block 8 and the secondary keel 2.

[0034] When it is necessary to release the fixation between the first fixing block 7 and the second fixing block 8 and the secondary keel 2, the worker rotates the first threaded sleeve 15 in the opposite direction. The first threaded sleeve 15 drives the first fixing block 7 to rotate in the opposite direction through the permanent magnet 16. After the first fixing block 7 rotates 90° in the opposite direction, the first fixing block 7 is aligned with the corresponding second fixing block 8. As the first threaded sleeve 15 continues to rotate, the first threaded sleeve 15 drives the first fixing block 7 to move closer to the second fixing block 8 until the first fixing block 7 is in contact with the corresponding second fixing block 8, which completes the reset.

[0035] The operation process of the two connecting rings 5 ​​on the same mounting component 4 is as follows: The worker pulls the two fixing pins 9 upwards, causing them to separate from their corresponding limiting holes 10. The return springs on the fixing pins 9 are stretched, rotating the two connecting rings 5 ​​(to...). Figure 3The main view is the reference view (rotation direction is counterclockwise), so that the two connecting rings 5 ​​drive the mounting block 6 to rotate synchronously during the rotation. The mounting block 6 drives the first fixing block 7 and the second fixing block 8 to rotate synchronously. When the mounting block 6 rotates 90° (that is, when the first fixing block 7 is directly below the corresponding main keel 1), the fixing pin 9 is aligned with the left limiting hole 10. Under the action of the return spring on it, the fixing pin 9 is inserted into the left limiting hole 10, thereby fixing the connecting ring 5 and all the parts on it in the moved position.

[0036] When a suspended ceiling is required, the staff first plan the ceiling area according to the size of the roof and the ceiling panels, dividing the roof into one or more installation areas. The staff then selects main keel 1 and secondary keel 2 of different sizes according to the size of the divided areas. Then, multiple fixing modules 3 are used to fix the selected main keel 1 to the roof in sequence (the following is an example of a single main keel 1 arranged front to back, all main keels 1 arranged left to right, and secondary keels 2 arranged left to right, all secondary keels 2 arranged front to back). Then, a certain number of mounting parts 4 are installed on the main keel 1, and the distance between the front and rear mounting parts 4 is adjusted according to the size of the ceiling panels.

[0037] After the installation of the mounting component 4 is completed, the worker selects the row of mounting components 4 on the left as a reference, so that the first fixing block 7 and the second fixing block 8 in this row are both in a vertical position. Then, following the operation process for the mounting component 4 and the connecting ring 5 described above, the worker rotates the first fixing block 7 and the second fixing block 8 in the remaining positions to a horizontal position. Then, one of the secondary keels 2 is adjusted to a vertical position and moved to the position corresponding to the mounting component 4 on the left front side. Then, the worker moves the secondary keel 2 upward so that the pair of first fixing blocks 7 and second fixing blocks 8 in a vertical position are inserted into the corresponding slots of the secondary keel 2. The worker then adjusts the relative position of the secondary keel 2 and the first fixing block 7. After adjustment, the worker performs the above operation to initially fix the first fixing block 7 and the corresponding second fixing block 8 to the secondary keel 2.

[0038] After the secondary keel 2 is initially fixed, the worker pulls the two fixing pins 9 on the left front side upwards to release the two limiting rings 5 ​​on the left front side. Then, the worker swings the secondary keel 2, making it swing around the center of the left connecting ring 5 (the secondary keel 2 gradually swings from vertical to horizontal). After the secondary keel 2 reaches the horizontal position, the first fixing block 7 and the second fixing block 8 in the remaining positions gradually enter the secondary keel 2. The worker keeps the secondary keel 2 in a horizontal position and changes the position of the remaining first fixing blocks 7 corresponding to the secondary keel 2 in sequence according to the above operation to fix the secondary keel 2. No additional operation is required to fix the secondary keel, thus enabling the worker to install a single secondary keel by itself, improving the installation efficiency of the overall keel structure.

[0039] After securing the front secondary keel 2, the workers proceed with the installation and securing of the remaining secondary keels 2 in sequence, following the same procedure. Once all secondary keels 2 are secured, the workers install the ceiling panel onto the secondary keels 2 (referring to the existing process), thus completing the overall ceiling installation. During subsequent use of the ceiling panel, if disassembly and maintenance are required, the workers remove the ceiling panel and then reverse the first threaded sleeve 15 as described above, realigning the first fixing block 7 and the second fixing block 8 (as shown in the diagram). This allows the corresponding secondary keel 2 to be separated from the first fixing block 7 and the second fixing block 8, facilitating its removal from the main keel 1. This allows for easier maintenance of the main keel 1, secondary keels 2, and fixing module 3. Example 2

[0040] Based on Example 1, this example takes into account the problem that during the installation of the secondary keel, the secondary keel may be affected by the installation reference error of the main keel, which may cause the height of the secondary keel after installation to be incorrect, thus affecting the flatness of the secondary keel.

[0041] like Figure 5 and Figure 8 As shown, it also includes several adjustment components, which are set on the corresponding mounting blocks 6. The adjustment components are used to change the relative position of the corresponding moving rods 13. The adjustment components include a connecting shell 18, which is slidably connected to the corresponding mounting block 6. A second threaded sleeve 19 is rotatably connected to the side of the connecting shell 18 near the main keel 1. The second threaded sleeve 19 is threadedly connected to the external thread on the corresponding moving rod 13. The moving rod 13 is slidably connected to the connecting shell 18. A fixing ring 20 is fixedly connected to the side of the mounting block 6 away from the main keel 1. A screw 21 is provided through the fixing ring 20. The screw 21 is threadedly connected to the corresponding connecting shell 18. The connecting shell 18 is slidably connected to the fixing ring 20.

[0042] In the above scheme, the specific number of adjustment components is consistent with the specific number of mounting blocks 6; the connecting shell 18 passes through the corresponding mounting block 6; the second threaded sleeve 19 drives the moving rod 13 to move; the connecting shell 18 is fixed to the fixing ring 20 by the screw 21, and when the screw 21 is separated from the corresponding connecting shell 18, the connecting shell 18 can slide along the corresponding fixing ring 20.

[0043] like Figure 6 As shown, the diameter of the circumcircle of the projection of the second threaded sleeve 19 onto the corresponding connecting shell 18 is not greater than the diameter of the connecting shell 18, ensuring that the connecting shell 18 can drive the second threaded sleeve 19 and the moving rod 13 to move normally along the fixed ring 20, thereby achieving quick assembly and disassembly.

[0044] The specific workflow of the above scheme is as follows: After the workers rotate all the connecting rings 5 ​​except the reference ring by 90°, the second threaded sleeve 19 of this part is in a vertical state. Then, the workers rotate the second threaded sleeve 19 in sequence, so that the second threaded sleeve 19 drives the corresponding moving rod 13 and all the parts on it to move upward synchronously during the rotation, thereby adjusting the height of the second fixing block 8 of this part, so that the lower side of the second fixing block 8 of this part tends to be on the same horizontal plane. After the position of the second fixing block 8 of this part is adjusted, the workers install the selected secondary keel 2 in sequence according to the above operation, thereby ensuring that the secondary keel 2 can be in a horizontal state after it is fixed, improving the levelness of the secondary keel 2, thereby increasing the overall flatness after the ceiling is completed.

[0045] When the ceiling needs maintenance during subsequent use, the staff will remove the ceiling panel and then remove the screws 21 according to the adjustment requirements. The staff can then pull down the corresponding second fixing block 8 to separate the transmission connecting shell 18 of the second fixing block 8 from the corresponding fixing ring 20. No additional operation is required, making the entire disassembly process faster and facilitating the maintenance of the above parts.

[0046] Those skilled in the art should understand that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of the present invention.

Claims

1. A modular, rapidly installable and repairable ceiling system suitable for prefabricated buildings, characterized in that, include: Several main keels (1) and several secondary keels (2) are provided with slots. Several fixed modules (3) and several mounting parts (4) are detachably connected to the main keel (1) at equal intervals. The mounting parts (4) are rotatably connected to symmetrically distributed connecting rings (5). The symmetrically distributed connecting rings (5) are jointly fixed to a mounting block (6). The mounting block (6) is provided with a connecting component. The mounting block (6) is provided with a first fixing block (7) and a second fixing block (8) through the connecting component. The connecting component is used to change the relative position of the first fixing block (7) and the second fixing block (8) to fix the secondary keel (2). The mounting part (4) and the corresponding connecting ring (5) are jointly provided with a fixing component. The fixing component is used to lock the relative position of the connecting ring (5) and the mounting part (4).

2. The prefabricated building ceiling system with modular, rapid installation and repair capabilities according to claim 1, characterized in that, The fixing component includes two fixing pins (9) symmetrically distributed. The two fixing pins (9) are respectively slidably connected to the corresponding connecting rings (5). A reset tension spring is fixed between the fixing pins (9) and the corresponding connecting rings (5). The mounting component (4) is provided with two sets of limiting holes (10). The number of limiting holes (10) in each set is several. The limiting holes (10) are used to limit the fixing pins (9).

3. A prefabricated building-compatible, modular, quick-installation and repair ceiling system according to claim 2, characterized in that, The included angle between the central axes of the two limiting holes (10) on the same mounting component (4) is 90°.

4. A prefabricated building ceiling system with modular, rapid installation and repair capabilities, as described in claim 3, is characterized in that... The connecting assembly includes a movable rod (13), which is disposed on the corresponding mounting block (6). The movable rod (13) is provided with an external thread. The movable rod (13) passes through the corresponding first fixing block (7) and is fixedly connected to the corresponding second fixing block (8). The first fixing block (7) is rotatably connected to a mounting ring (14). The mounting ring (14) is slidably connected to the movable rod (13). The mounting ring (14) is rotatably connected to a first threaded sleeve (15). The first threaded sleeve (15) is threadedly connected to the external thread on the corresponding movable rod (13).

5. A prefabricated building ceiling system with modular, rapid installation and repair capabilities, as described in claim 4, is characterized in that... The connecting assembly also includes a permanent magnet (16), which is fixed to the corresponding first fixing block (7). The mounting ring (14) is provided with an arc-shaped through hole (17). The permanent magnet (16) slides in the arc-shaped through hole (17). The first threaded sleeve (15) drives the first fixing block (7) to rotate through the permanent magnet (16).

6. A prefabricated building ceiling system with modular, rapid installation and repair capabilities, as described in claim 5, is characterized in that... The width of the first fixing block (7) and the second fixing block (8) is A, the minimum width of the slot of the secondary keel (2) is B, and A < B; the length of the first fixing block (7) and the second fixing block (8) is C, and the maximum width of the slot of the secondary keel (2) is D, and C < D.

7. A prefabricated building-compatible, modular, quick-installation and repair ceiling system according to claim 5, characterized in that, The central angle corresponding to the arc-shaped through hole (17) is 90°.

8. A prefabricated building ceiling system with modular, rapid installation and repair capabilities, as described in claim 5, is characterized in that... It also includes several adjustment components, which are disposed on the corresponding mounting block (6). The adjustment components are used to change the relative position of the corresponding moving rod (13). The adjustment components include a connecting shell (18), which is slidably connected to the corresponding mounting block (6). The connecting shell (18) is rotatably connected to a second threaded sleeve (19) on the side of the connecting shell (18) near the main keel (1). The second threaded sleeve (19) is threadedly connected to the external thread on the corresponding moving rod (13). The moving rod (13) is slidably connected to the connecting shell (18).

9. A prefabricated building ceiling system with modular, rapid installation and repair capabilities, as described in claim 8, is characterized in that... A fixing ring (20) is fixedly connected to the side of the mounting block (6) away from the main keel (1). A screw (21) is provided through the fixing ring (20). The screw (21) is threadedly connected to the corresponding connecting shell (18). The connecting shell (18) is slidably connected to both the fixing ring (20) and the mounting block (6).

10. A prefabricated building ceiling system with modular, rapid installation and repair capabilities, as described in claim 9, characterized in that... The diameter of the circumcircle of the second threaded sleeve (19) projected onto the corresponding connecting shell (18) is not greater than the diameter of the connecting shell (18).

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