Light steel keel gypsum plaster board suspended ceiling structure and construction method thereof

Abstract

The invention relates to the technical field of suspended ceiling structures, and provides a light steel keel gypsum plaster board suspended ceiling structure aiming at the situation that traditional gypsum plaster boards are inconvenient to install. The light steel keel gypsum plaster board suspended ceiling structure comprises a keel frame and a plurality of gypsum plaster boards laid on the bottom side of the keel frame; the keel frame comprises a plurality of auxiliary keels which are arranged in parallel; a plurality of connecting rods are vertically and rotationally connected to the two sides of the gypsum plaster board, clamping plates are vertically arranged at the top ends of the connecting rods, and the clamping plates of the connecting rods on the two sides of the gypsum plaster board are in lap joint with the tops of the two auxiliary keels correspondingly; the gypsum plaster boards are fixed to the two adjacent auxiliary keels through self-tapping screws. The gypsum plaster board has the effect of facilitating installation and fixation of the gypsum plaster board.

Description

Technical Field

[0001] The present application relates to the field of suspended ceiling structures, and in particular to a light steel keel gypsum board suspended ceiling structure and a construction method thereof. Background Art

[0002] As a common ceiling structure on the market, light steel frame gypsum board ceiling has the functions of beautification, heat preservation and heat insulation, and is an important part of modern building interior decoration.

[0003] In the related art, the light steel frame gypsum board ceiling is composed of a keel frame and a number of gypsum boards. During the actual installation and construction of this type of ceiling structure, the keel frame must be installed and fixed to the ceiling first, and then the gypsum boards must be installed and fixed to the keel frame by self-tapping screws.

[0004] With regard to the above-mentioned related technologies, during the installation and fixing process of the gypsum board, the cooperation of multiple persons is required to complete the installation construction work. Specifically, at least one construction worker is required to lift the gypsum board and press it on the bottom side of the keel frame throughout the whole process, and then another construction worker fixes the gypsum board to the keel frame with self-tapping screws. The overall operation is relatively inconvenient and the installation efficiency is low. Therefore, there is room for improvement. Summary of the invention

[0005] In order to facilitate the installation and fixation of the gypsum board and improve the connection stability between the gypsum board and the keel frame, the present application provides a light steel keel gypsum board ceiling structure and a construction method thereof.

[0006] The present application provides a light steel keel gypsum board ceiling structure and a construction method thereof, which adopts the following technical solutions: A light steel frame gypsum board ceiling structure comprises a keel frame and a plurality of gypsum boards laid on the bottom side of the keel frame; the keel frame comprises a plurality of parallel secondary keels; both sides of the gypsum board are vertically rotatably connected with a plurality of connecting rods, the tops of the connecting rods are vertically provided with clamping plates, the clamping plates of the connecting rods on both sides of the gypsum board are respectively overlapped on the tops of the two adjacent secondary keels; the gypsum board is fixed to the two adjacent secondary keels by self-tapping screws.

[0007] By adopting the above technical solution, when installing the gypsum board, after moving the gypsum board to the bottom of two adjacent secondary keels, rotate the connecting rods on both sides of the gypsum board so that the clamping plates at the ends of the connecting rods on the gypsum board are rotated and overlapped on the corresponding secondary keels, thereby hanging the gypsum board to be installed and fixed on the bottom of the secondary keel to complete the temporary positioning of the gypsum board. Subsequent construction personnel do not need to lift the gypsum board to be installed and can directly fix the gypsum board to the two adjacent secondary keels with self-tapping screws, which is convenient for the installation and fixation of the gypsum board and improves the overall installation efficiency; at the same time, by overlapping the clamping plates on the corresponding secondary keels, auxiliary support for the gypsum board can be achieved, which is beneficial to improving the stress conditions of the self-tapping screws and the secondary keels, thereby facilitating the gypsum board to be installed on the keel frame more firmly.

[0008] Preferably, a sound insulation board is further provided on the bottom side of the gypsum board, sound-absorbing cotton is provided inside the sound insulation board, and the sound insulation board is connected to the bottom side of the gypsum board through a connecting component.

[0009] By adopting the above technical solution, by installing a sound insulation board at the bottom of the paper-faced gypsum board, after the subsequent ceiling structure is installed, the noise energy transmitted from the subsequent building ceiling can be absorbed by the sound-absorbing cotton in the sound insulation board, reducing the reflection and echo of the noise, which is beneficial to improving the overall sound insulation effect of the ceiling structure.

[0010] Preferably, a plurality of rubber tubes are passed through and fixed to the gypsum board corresponding to the plurality of connecting rods; the connecting rods are all rotatably passed through the corresponding rubber tubes and the connecting rods are damping-coordinated with the rubber tubes.

[0011] By adopting the above technical solution, on the one hand, the connecting rod can be rotatably connected to the gypsum board. When the gypsum board is subsequently installed, the connecting rod can be rotated so that the clamping plate at the end of the connecting rod is first offset from the corresponding secondary keel to limit the interference between the clamping plate and the corresponding secondary keel during the upward movement of the gypsum board; through the damping cooperation between the connecting rod and the rubber tube, the rubber tube can be used to limit the sliding or rotation of the connecting rod during the subsequent movement of the gypsum board, so that the clamping plate can always maintain a direction offset from the corresponding secondary keel during the upward movement of the gypsum board.

[0012] Preferably, a rotating block is vertically connected to the bottom end of the connecting rod, and a bayonet for cooperating with a screwdriver is provided on the bottom side of the rotating block; a sink groove is also provided at the bottom end of the rubber tube, and the rotating block is embedded in the sink groove.

[0013] By adopting the above technical solution and setting the rotating block, when the connecting rod needs to be rotated later, the connecting rod can be rotated by a screwdriver after the screwdriver cooperates with the bayonet on the bottom side of the rotating block, thereby facilitating the adjustment of the direction of the connecting rod at the end of the connecting rod; by providing a recessed groove at the bottom end of the rubber tube for the rotating block to be embedded, the rotating block can be embedded in the recessed groove, thereby limiting the rotating block from protruding from the bottom side of the gypsum board and affecting the subsequent installation of the sound insulation board and the gypsum board.

[0014] Preferably, a mounting groove is provided on the upper surface of the sound insulation board, and the sound-absorbing cotton is embedded in the mounting groove.

[0015] By adopting the above technical solution, the sound-absorbing cotton is embedded in the installation groove of the sound insulation board, so that the sound insulation board can be stably installed on the sound insulation board, and the subsequent disassembly, assembly and replacement of the sound-absorbing cotton is convenient.

[0016] Preferably, the connecting assembly includes a plurality of magnetic blocks protruding from the upper surface of the sound insulation board, the plurality of magnetic blocks correspond one-to-one to the rubber tubes, and the top ends of the magnetic blocks are embedded in the corresponding grooves of the rubber tubes and are magnetically connected to the rotating blocks.

[0017] By adopting the above technical solution, the top of the magnetic block is embedded in the groove at the bottom of the rubber tube and magnetically connected to the rotating block at the bottom of the connecting rod, so that the sound insulation board can be firmly installed on the bottom of the gypsum board, and the sound insulation board can fit more closely to the bottom of the gypsum board, thereby reducing the gap between the sound insulation boards and affecting the overall sound insulation effect of the subsequent ceiling structure.

[0018] Preferably, the outer circumference of each of the sound insulation boards is surrounded and connected with a flexible rubber ring, and the flexible rubber rings on the sides adjacent to the adjacent sound insulation boards are tightly arranged.

[0019] By adopting the above technical solution, on the one hand, it is convenient to better seal the gaps between adjacent sound insulation boards, reduce the subsequent water vapor in the air entering the interior of the sound insulation boards through the gaps between adjacent sound insulation boards, causing the sound-absorbing cotton to get damp and affecting the sound insulation effect of the sound-absorbing cotton; on the other hand, it is convenient to absorb part of the noise through the flexible rubber ring, which is beneficial to further improve the overall sound insulation effect of the ceiling structure.

[0020] A construction method for a light steel keel gypsum board ceiling structure comprises the following steps: S1: Installation of keel frame: installation of main keel and secondary keel; S2: Plasterboard in place: Move the gypsum board so that it abuts against the bottom sides of two adjacent secondary keels; S3: Gypsum board positioning: Rotate the connecting rods on both sides of the gypsum board so that the clamping plates at the top of the connecting rods on both sides of the gypsum board overlap the tops of the two adjacent secondary keels respectively: S4: Installation and fixation of gypsum board: Use self-tapping screws to fix both sides of the gypsum board to two adjacent secondary keels; S5: Repeat steps S2 to S4 until the remaining gypsum boards are installed and fixed.

[0021] By adopting the above technical solution, the connecting rod and the connecting rod are used to overlap the clamping plate at the end of the connecting rod to the top of the corresponding secondary purlin, and the gypsum board is lifted up by using the connecting rod and the clamping plate. On the one hand, subsequent construction workers do not need to lift the gypsum board and can directly fix the gypsum board to the bottom of two adjacent secondary purlins by self-tapping screws. At the same time, the construction workers can slide the gypsum board to be installed along the secondary purlin, which is convenient for fine-tuning the installation position of the gypsum board.

[0022] In summary, the present application includes at least one of the following beneficial technical effects: 1. When installing the gypsum board, the connecting rods on both sides of the gypsum board are rotated so that the clamping plates at the ends of the connecting rods are overlapped on the corresponding secondary keels respectively, so as to lift the gypsum board and hang it on two adjacent secondary keels. When the gypsum board is subsequently fixed to the keel frame by automatic screws, there is no need to lift the gypsum board, which facilitates the installation and fixation of the gypsum board.

[0023] 2. The connecting rod is passed through the rubber tube and the connecting rod and the rubber tube are damped. On the one hand, the connecting rod is rotatably connected to the gypsum board, which is convenient for adjusting the direction of the clamping plate at the end of the connecting rod by rotating the connecting rod. On the other hand, the damping cooperation between the connecting rod and the rubber tube can limit the displacement or rotation of the connecting rod during the subsequent upward movement of the gypsum board to the bottom of the secondary keel, resulting in interference between the upward movement path of the clamping plate and the secondary keel, so that the clamping plate can better maintain a dislocated state with the secondary keel during the upward movement of the gypsum board.

[0024] 3. A flexible rubber ring is arranged around the outer periphery of the sound insulation board, and the flexible rubber rings on the outer peripheries of adjacent sound insulation boards are pressed against each other; on the one hand, part of the noise can be absorbed by the flexible rubber ring, which is beneficial to improving the overall sound insulation effect of the ceiling structure; on the other hand, the gaps between adjacent sound insulation boards are sealed to reduce the subsequent water vapor inside the building from penetrating into the sound insulation board through the gaps between adjacent sound insulation boards, causing the sound-absorbing cotton to get damp, thereby affecting the overall sound insulation effect of the sound-absorbing cotton. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the suspended ceiling structure used in the embodiment of the present application.

[0026] Figure 2 yes Figure 1 Enlarged schematic diagram of part A in the middle.

[0027] Figure 3It is a schematic diagram of the structure of the gypsum board and the sound insulation board used in the embodiment of the present application.

[0028] Figure 4 yes Figure 3 Enlarged schematic diagram of part B in the middle.

[0029] Figure 5 It is a schematic diagram of an explosion of a gypsum board and a sound insulation board used in an embodiment of the present application.

[0030] Figure 6 It is a schematic diagram of the state when the keel frame is installed according to an embodiment of the present application.

[0031] Figure 7 It is a schematic diagram of the state when installing gypsum board according to an embodiment of the present application.

[0032] Figure 8 It is a schematic diagram of the state when the sound insulation board is installed in an embodiment of the present application.

[0033] Description of reference numerals: 1. Keel frame; 11. Main keel; 12. Secondary keel; 13. Suspension rod; 14. Hanging piece; 2. Gypsum board; 20. Rubber tube; 201. Sinking groove; 21. Connecting rod; 22. Snap-on plate; 23. Rotating block; 3. Sound insulation board; 31. Sound-absorbing cotton; 32. Installation groove; 33. Magnetic block; 34. Annular limit groove; 35. Flexible rubber ring. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-8 This application is described in further detail.

[0035] The embodiment of the present application discloses a light steel keel gypsum board ceiling structure and a construction method thereof.

[0036] A light steel keel gypsum board ceiling structure, refer to Figure 1 and Figure 2 , including a keel frame 1 and a plurality of gypsum boards 2 installed at the bottom of the keel frame 1; the keel frame 1 includes a plurality of parallel main keels 11 and a plurality of parallel auxiliary keels 12; the main keels 11 and the auxiliary keels 12 are vertically arranged; the main keels 11 are fixed to the ceiling through a plurality of suspension rods 13; the auxiliary keels 12 are connected to the bottom of the plurality of main keels 11 through a plurality of hangers 14; the gypsum boards 2 are vertically rotatably connected with two connecting rods 21 on opposite sides; the top ends of the connecting rods 21 are vertically provided with clamping plates 22; the clamping plates 22 on the connecting rods 21 on both sides of the gypsum boards 2 are respectively overlapped on the tops of the two adjacent auxiliary keels 12; the two sides of the gypsum boards 2 are respectively fixed to the bottom sides of the two adjacent auxiliary keels 12 by self-tapping screws.

[0037] Reference Figure 3 and Figure 4 A sound insulation board 3 is installed at the bottom of the gypsum board 2; sound-absorbing cotton 31 is installed in the sound insulation board 3, and the sound insulation board 3 is installed at the bottom of the gypsum board 2 through a connecting component. The setting of the sound insulation board 3 is beneficial to improving the overall sound insulation effect of the ceiling structure.

[0038] Reference Figure 1 and Figure 3 When installing the gypsum board 2 to the bottom of two adjacent secondary keels 12, rotate the connecting rods 21 at each location so that the clamping plates 22 at the ends of the connecting rods 21 are staggered with the corresponding secondary keels 12; after moving the gypsum board 2 to the bottom of two adjacent gypsum boards 2, rotate the connecting rods 21 at each location so that the clamping plates 22 at the ends of the connecting rods 21 are swung and overlapped to the top of the corresponding secondary keels 12; use the clamping plates 22 to cooperate with the corresponding secondary keels 12 to hang the gypsum board 2 on the top of the two adjacent secondary keels 12; subsequent construction personnel can directly fix the gypsum board 2 on the two adjacent secondary keels 12 with self-tapping screws. The gypsum board 2 can be fixed on the secondary keel 12 without lifting and pressing the gypsum board 2 on the bottom of the two adjacent secondary keels 12 during the fixing process, which is convenient for the installation and fixation of the gypsum board 2; at the same time, after the clamping plate 22 is overlapped on the corresponding secondary keel 12, the gypsum board 2 can be adjusted laterally along the secondary keel 12 to achieve fine adjustment of the installation position of the point gypsum board 2; in addition, the subsequent clamping plate 22 can be used in conjunction with the self-tapping screws to fix and limit the gypsum board 2, which is beneficial to improve the stress condition at the connection between the self-tapping screws and the secondary keel, thereby making the gypsum board 2 more firmly installed on the bottom of the two adjacent secondary keels 12.

[0039] Reference Figure 1 and Figure 2 The top end of the connecting rod 21 is passed through the clamping plate 22, and the outer periphery of the top end of the connecting rod 21 is threadedly connected with two fastening nuts through a threaded structure. The two fastening nuts are respectively pressed against the two sides of the clamping plate 22 to achieve the limit fixation of the clamping plate 22. Through the above settings, the height of the clamping plate 22 can be adjusted, which is convenient for adjusting the height position of the clamping plate 22 according to actual installation needs.

[0040] Reference Figure 3 and Figure 4, four rubber tubes 20 are fixed to the four connecting rods 21 corresponding to the gypsum board 2; the top and bottom ends of the rubber tube 20 are respectively set flush with the top and bottom surfaces of the gypsum board 2; the outer periphery of the rubber tube 20 is fixed to the gypsum board 2 by glue, so as to achieve the limit fixation of the rubber tube 20. The connecting rod 21 is passed through the corresponding rubber tube 20, and the connecting rod and the outer periphery of the rubber tube 20 are matched with damping; through the above settings, the connecting rod 21 is rotated and passed through the gypsum board 2, so that the direction of the clamping plate 22 at the end of the connecting rod 21 can be adjusted by rotating the connecting rod 21; at the same time, the damping cooperation between the connecting rod 21 and the rubber tube 20 is used to limit the displacement or rotation of the connecting rod 21 on the gypsum board 2 when the gypsum board 2 is subsequently moved upward, resulting in the interference between the clamping plate 22 that originally kept the staggered state with the corresponding secondary keel 12 and the corresponding secondary keel 12.

[0041] The bottom end of the connecting rod 21 is coaxially connected with a rotating block 23, and a bayonet adapted to the end of a screwdriver is provided on the bottom side of the rotating block 23. Specifically, the bayonet is "straight-shaped". In other embodiments. The bayonet may also be "cross-shaped" or "hexagonal groove-shaped". A sink groove 201 is coaxially provided at the bottom end of the rubber tube 20, and the rotating block 23 is embedded in the sink groove 201. A gap is left between the bottom side of the rotating block 23 and the bottom end face of the rubber tube 20, which limits the subsequent extension of the rotating block 23 from the bottom surface of the gypsum board 2, resulting in the situation that the sound insulation board 3 is installed on the bottom of the gypsum board 2.

[0042] The upper surface of the sound insulation board 3 is provided with a mounting groove 32; the sound-absorbing cotton 31 is embedded in the mounting groove 32, so that the sound-absorbing cotton 31 is firmly installed in the sound insulation board 3. The connection assembly includes four magnetic blocks 33 vertically protruding at the bottom of the mounting groove 32; in this embodiment, the magnetic blocks 33 are magnets; the four magnetic blocks 33 correspond to the four rubber tubes 20 one by one; the tops of the magnetic blocks 33 are all penetrated through the sound-absorbing cotton 31 and extend out of the upper surface of the sound insulation board 3; the tops of the magnetic blocks 33 are all embedded in the corresponding grooves 201 at the bottom of the rubber tubes 20 and are magnetically connected to the rotating blocks 23 located in the grooves 201, so that the sound insulation board 3 is firmly installed at the bottom of the gypsum board 2.

[0043] Reference Figure 4 and Figure 5, the outer periphery of the sound insulation board 3 is surrounded by a flexible rubber ring 35; the flexible rubber rings 35 on the adjacent side of the adjacent sound insulation board 3 are arranged in abutment with each other; through the above arrangement, on the one hand, part of the noise can be absorbed by the flexible rubber ring 35, which is conducive to further improving the overall sound insulation effect of the ceiling structure; on the other hand, the gap on the adjacent side of the adjacent sound insulation board 3 can be blocked by the cooperation between the flexible rubber rings 35 on the adjacent side of the adjacent sound insulation board 3, so as to reduce the subsequent internal water vapor of the building from entering the sound insulation board 3 through the gap between the adjacent sound insulation boards 3, causing the sound-absorbing cotton 31 in the installation groove 32 of the sound insulation board 3 to get damp, affecting the overall sound insulation effect of the sound-absorbing cotton 31. The outer periphery of the sound insulation board 3 is provided with an annular limiting groove 34, and the inner periphery of the flexible rubber ring 35 is embedded in the annular limiting groove 34, so that the flexible rubber ring 35 can be firmly installed on the outer periphery of the sound insulation board 3.

[0044] A construction method for a light steel keel gypsum board ceiling structure comprises the following steps: S1: Installation of dragon frame 1: refer to Figure 6 , fix the main keel 11 to the top of the building ceiling through a plurality of hangers 13; install the secondary keel 12 at the bottom of the main keels 11 through a plurality of hangers 14; S2: Gypsum board 2 in place: refer to Figure 4 and Figure 7 , including the following steps: S2.1: Use a bolt cutter to rotate the rotating block 23 at the bottom end of each connecting rod 21 in turn to drive the connecting rod 21 to rotate until the clamping plate 22 at the top end of the connecting rod 21 is offset from the corresponding secondary keel 12; S2.2: Move the gypsum board 2 so that it abuts against the bottom sides of two adjacent secondary keels 12; S3: Positioning of the gypsum board 2: Use a screwdriver to turn the rotating block 23 at the bottom end of each connecting rod 21 in turn to drive the corresponding connecting rod 21 to rotate, until the clamping plates 22 at the top ends of the connecting rods 21 on both sides of the gypsum board 2 are respectively overlapped with the tops of two adjacent secondary keels 12, thereby realizing temporary positioning of the gypsum board.

[0045] S4: Installation and fixation of the gypsum board 2: fix both sides of the gypsum board 2 to two adjacent secondary keels 12 respectively by self-tapping screws.

[0046] S5: Repeat steps S2 to S4 until the installation and fixation of the remaining gypsum boards 2 are completed.

[0047] S6: Installation of sound insulation board 3: Refer to Figure 4 and Figure 8, move the sound insulation board 3 to the bottom of the gypsum board 2, and make the four magnetic blocks 33 on the sound insulation board 3 respectively embedded in the grooves 201 of the rubber tube 20 corresponding to the bottom side of the gypsum board 2, and magnetically cooperate with the rotating blocks 23 in the grooves 201 to achieve the installation and fixation of the sound insulation board 3.

[0048] During the installation and fixing process of the gypsum board 2 of the present application, the gypsum board 2 can be firstly hung on the bottom of two adjacent secondary keels 12 through the clamping plates 22 at the ends of the connecting rods 21 on both sides, and then the gypsum board 2 can be fixed to the two adjacent secondary keels 12 through self-tapping screws. In the process of fixing the gypsum board 2 through the self-tapping screws, there is no need to manually lift and press the gypsum board 2 to the bottom of the two adjacent secondary keels 12, which makes the installation and fixing of the gypsum board 2 simpler and more convenient; and after the subsequent gypsum board 2 is installed and fixed, the clamping plate 22 at the top end of the connecting rod 21 is overlapped on the corresponding secondary keel 12, which is conducive to improving the stress condition at the connection between the self-tapping screw and the secondary keel 12, so that the gypsum board 2 can be more firmly supported and installed at the bottom of the keel frame 1.

[0049] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A light steel keel gypsum board ceiling structure, comprising a keel frame (1) and a plurality of gypsum boards (2) laid on the bottom side of the keel frame (1); the keel frame (1) comprises a plurality of secondary keels (12) arranged in parallel; characterized in that: Both sides of the gypsum board (2) are vertically rotatably connected to a plurality of connecting rods (21), and the tops of the connecting rods (21) are vertically provided with clamping plates (22). The clamping plates (22) of the connecting rods (21) on both sides of the gypsum board (2) are respectively overlapped on the tops of two adjacent secondary keels (12); the gypsum board (2) is fixed to the two adjacent secondary keels (12) by self-tapping screws.

2. A light steel keel gypsum board ceiling structure according to claim 1, characterized in that: A sound insulation board (3) is also provided on the bottom side of the gypsum board (2), sound-absorbing cotton (31) is provided inside the sound insulation board (3), and the sound insulation board (3) is connected to the bottom side of the gypsum board (2) via a connecting component.

3. A light steel keel gypsum board ceiling structure according to claim 2, characterized in that: A plurality of rubber tubes (20) are fixedly passed through the gypsum board (2) corresponding to the plurality of connecting rods (21); the connecting rods (21) are all rotatably passed through the corresponding rubber tubes (20), and the connecting rods (21) and the rubber tubes (20) are damping-matched.

4. A light steel keel gypsum board ceiling structure according to claim 3, characterized in that: The bottom end of the connecting rod (21) is vertically connected to a rotating block (23), and a bayonet for cooperating with a screwdriver is provided on the bottom side of the rotating block (23); a sink groove (201) is also provided at the bottom end of the rubber tube (20), and the rotating block (23) is embedded in the sink groove (201).

5. The light steel frame gypsum board ceiling structure according to claim 2 is characterized by: The upper surface of the sound insulation board (3) is provided with a mounting groove (32), and the sound absorbing cotton (31) is embedded in the mounting groove (32).

6. A light steel keel gypsum board ceiling structure according to claim 4, characterized in that: The connection assembly comprises a plurality of magnetic blocks (33) protruding from the upper surface of the sound insulation board (3), the plurality of magnetic blocks (33) corresponding to the rubber tubes (20) one by one, the top ends of the magnetic blocks (33) being embedded in the corresponding grooves (201) of the rubber tubes (20) and being magnetically connected to the rotating block (23).

7. The light steel frame gypsum board ceiling structure according to claim 5 is characterized by: The outer circumference of the sound insulation board (3) is surrounded and connected with a flexible rubber ring (35), and the flexible rubber ring (35) on the side close to the adjacent sound insulation board (3) is tightly arranged.

8. A light steel frame gypsum board ceiling structure as claimed in any one of claims 1 to 7, characterized in that: The following steps are involved: S1: Installation of keel frame (1): installation of main keel (11) and secondary keel (12); S2: Plasterboard (2) is put in place: the gypsum board (2) is moved so that the gypsum board (2) abuts against the bottom sides of two adjacent secondary keels (12); S3: Positioning the gypsum board (2): Rotate the connecting rods (21) on both sides of the gypsum board (2) so that the clamping plates (22) at the top ends of the connecting rods (21) on both sides of the gypsum board (2) are respectively overlapped with the tops of two adjacent secondary keels (12): S4: Installing and fixing the gypsum board (2): fixing both sides of the gypsum board (2) to two adjacent secondary keels (12) by using self-tapping screws; S5: Repeat steps S2 to S4 until the remaining gypsum boards (2) are installed and fixed.

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