Quick suspended ceiling mounting structure for public building construction

Abstract

The invention relates to the technical field of suspended ceiling construction of gypsum boards, in particular to a quick suspended ceiling installation structure for public building construction. A gypsum bottom plate is hoisted to the lower end face of a keel side beam through winding of a pull rope, a connecting rod is fixedly arranged between a reinforcing beam and a cross beam, and the upper end of the connecting rod is fixed to the reinforcing beam; the gypsum bottom plate hoisting device has the beneficial effects that hoisting of a gypsum bottom plate is achieved through the pull rope, adaptation to a high building top plate is achieved, meanwhile, through prefabrication installation, the gypsum bottom plate can be hoisted through the pull rope, the gypsum bottom plate can be hoisted through the pull rope, and the gypsum bottom plate can be hoisted through the pull rope and can be matched with the high building top plate. According to the keel assembly, the fastening screws are arranged on the keel side beams, so that drilling and screw driving are not needed during installation, falling of gypsum powder is avoided, only the fastening screws need to be disassembled during disassembly, the keel assembly does not need to be disassembled, the gravity of the gypsum boards acts on the keel side beams and the reinforcing beams through the keel framework, and the structural stability of the keel assembly is improved.

Description

Technical Field

[0001] The invention relates to the technical field of gypsum board ceiling construction, in particular to a ceiling quick installation structure for public building construction. Background Art

[0002] In the construction of public buildings, suspended ceiling construction is a common construction process. Existing suspended ceiling construction mostly uses the method of pre-installing the keel frame to achieve the suspended ceiling installation of the gypsum board.

[0003] Existing patent CN202011252241.7 is a gypsum board ceiling structure for public buildings, including a frame, a transmission card unit and a trigger unit; the frame: there are two and they are arranged in parallel, the front and rear sides of the lower ends of the two frames are arranged with outer grooves in a linear array, and the two outer grooves are arranged in front and back correspondence, and the lower end of each frame has two supporting translation seats inserted in the left and right movements. For the gypsum board ceiling structure for public buildings, the frame can be fixed on the external support frame, and the gypsum board can be raised and lowered. Through the steps of pressing and fixing and then pressing and pushing out of the trigger structure, the gypsum board can be fixed at a high place when using it, and the gypsum board can be dropped when repairing or replacing the gypsum board, which is convenient for the installation and replacement of the gypsum board, avoiding workers from looking up for a long time to work, reducing the labor intensity of workers, and the position of the gypsum board can be adjusted left and right, so that the left and right gypsum boards can be connected with each other to increase their overall sealing.

[0004] In the improvement of construction technology, the prior art only considers the installation of gypsum boards. However, for the characteristics of public buildings, the fixed installation of gypsum boards is not a difficult point in construction. The characteristics of public buildings are that the top plate is high from the ground and the area requiring suspended ceiling is large, such as stations, exhibition halls, etc. Such architectural characteristics lead to an increase in the area of ​​a single gypsum board and an increase in the hoisting height of the gypsum board. The gypsum board has a brittle structure and is very easy to break during the lifting and installation process. In addition, when installing the gypsum board, the rotation of the automatic screws causes dust to fall, which seriously affects the high-altitude work of the construction workers. Summary of the invention

[0005] The object of the present invention is to provide a quick-installation structure for suspended ceilings in public building construction, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A fast-installation structure for suspended ceilings in public building construction, comprising a gypsum board assembly, a keel assembly and a scaffold for suspended ceilings, wherein the scaffold is provided with an upper frame for lifting and lowering installation, and a pull rope for winding up driven by a motor is installed on the upper frame for transverse extension and retraction, wherein the keel assembly is fixedly installed at the lower end of the installation top plate, the gypsum board assembly comprises a gypsum bottom plate and a gypsum side plate, the gypsum bottom plate is installed at the lower end of the keel assembly, and the gypsum side plate is fixed to the side of the keel assembly, and the keel assembly comprises a tie rod, a keel side beam, a reinforcing beam and a cross beam, the upper ends of a plurality of groups of the tie rods are fixed to the installation top plate by expansion bolts, the lower ends of the tie rods are fixedly connected to the upper ends of the keel side beams, and the plurality of groups of keel side beams are spaced parallel to each other. Distribution, a cross beam is arranged between adjacent keel side beams, a reinforcing beam is arranged between adjacent pull rods, the upper end of the cross beam is arranged with a plurality of groups of through long holes distributed linearly, the upper end surface of the gypsum base plate is prefabricated with an upper connecting cover, the upper connecting cover is provided with an extension rod extending along the through long hole to the upper end of the cross beam, the pull rope is connected to the extension rod, and the gypsum base plate is hoisted to the lower end surface of the keel side beam by winding the pull rope, a connecting rod is fixedly arranged between the reinforcing beam and the cross beam, the upper end of the connecting rod is fixed on the reinforcing beam, the lower end of the connecting rod is vertically provided with a bottom ring which is sleeved on the extension rod and pressed on the upper end surface of the cross beam, the extension rod is provided with an external thread, and a fixing nut pressed on the bottom ring is threadedly installed on the external thread.

[0008] Preferably, a T-shaped long groove is provided on one side of the keel side beam, an upper connecting block for connecting the expansion bolt is provided at the upper end of the pull rod, the lower end of the pull rod is fixedly connected to the upper inner wall of the T-shaped long groove, and a telescopically installed slider assembly is provided at the end of the cross beam, the slider assembly is inserted along the T-shaped long groove, and flaring grooves are provided at both end portions of the cross beam, the port height of the flaring groove is greater than the opening height of the T-shaped long groove, and the slider assembly is inserted along the flaring groove and slides into the T-shaped long groove.

[0009] Preferably, the slider assembly includes a T-shaped slider and a telescopic end block, one end of the telescopic end block is fixed to the end of the cross beam, and the other end of the telescopic end block is provided with an inner plug-in groove, one side of the T-shaped slider fits the inner wall of the T-shaped long groove, and the other side of the T-shaped slider is provided with a cross bar plugged into the inner plug-in groove, a spring is pressed between the cross bar and the inner wall of the plug-in inner groove, the port of the plug-in inner groove is a stepped ring groove, and a limiting ring cover is installed in the stepped ring groove, and the inner diameter of the limiting ring cover is smaller than the outer diameter of the end of the cross bar close to one end of the spring.

[0010] Preferably, a plurality of groups of spaced-apart positioning holes are provided on the upper and lower side walls at the front end of the T-shaped long slot, the positioning holes are connected to the inner cavity of the T-shaped long slot, and a positioning block facing the positioning hole is provided on the outer wall of the telescopic end block, and the length of the positioning block is less than the compression length of the spring.

[0011] Preferably, a plurality of groups of rollers are provided at the lower end of the scaffolding, an upper frame driven to be lifted and lowered by a lifting rod is provided at the upper end of the scaffolding, an inclined climbing frame is provided on one side of the scaffolding, the upper end of the inclined climbing frame extends to the bottom of the keel assembly, a winding box connected by a transverse driving rod is provided on one side of the upper frame, a winding roller for winding a pull rope is provided in the winding box, the winding roller is driven by a motor, an inverted U-shaped guide rail is provided at the upper end of the winding box, and the pull rope extends smoothly along the guide rail.

[0012] Preferably, the pull rod is configured as a stepped rod, and collars are provided at both ends of the reinforcing beam. The collars are sleeved on the pull rod and pressed onto the stepped surface of the middle section of the pull rod.

[0013] Preferably, the upper end of the connecting rod is provided with a pair of long mounting holes respectively located on the upper and lower sides of the reinforcing beam, and a U-shaped clamp is provided between the connecting rod and the reinforcing beam. The U-shaped clamp is inserted along the reinforcing beam, and the two ends of the U-shaped clamp are respectively inserted into the pair of long mounting holes, and the ends of the U-shaped clamp are fastened by locking nuts.

[0014] Preferably, a lower long groove is provided at the lower end of the cross beam, the lower end of the through long hole is connected to the lower long groove, and a conical rod is provided at the upper end of the upper connecting cover, the outer diameter of the upper end of the conical rod is smaller than the width of the lower long groove, and the outer diameter of the lower end of the conical rod is equal to the width of the lower long groove, the end of the extension rod is fixed on the conical rod, the conical rod is inserted into the lower long groove, and an elastic part is pressed between the conical rod and the upper inner wall of the lower long groove.

[0015] Preferably, the gypsum base plate is prefabricated with a stepped through hole, and the lower end of the upper connecting cover is provided with a screw hole with the same inner diameter as the small hole at the upper end of the stepped hole, and a fastening screw is inserted in the stepped hole, and the nut of the fastening screw is pressed on the stepped surface of the stepped hole, and the end thread of the fastening screw is rotatably installed in the screw hole.

[0016] Preferably, the upper end of the gypsum base plate is provided with a plurality of countersunk holes distributed in a circular array along the stepped holes, and the lower end of the upper cover is provided with a plurality of limit blocks distributed in a circular array, and the limit blocks are inserted in the countersunk holes.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The present invention prefabricates and installs a connecting cover on the existing gypsum board to form a structure connected with a draw rope, and then utilizes the draw rope to hoist the gypsum board to achieve adaptation to the top plate of a higher building. At the same time, through prefabrication and installation, there is no need to drill holes and drive screws during installation, which avoids the falling of gypsum powder and improves the safety of installation. The extension rod and the connecting rod cooperate to achieve fixed installation of the gypsum board. When disassembling, only the fastening screws need to be removed, so there is no need to disassemble the keel assembly. Instead, the keel skeleton is used to make the gravity of the gypsum board act on the keel side beams and the reinforcing beams respectively, thereby improving the structural stability of the keel assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the installation structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the scaffold structure of the present invention;

[0021] Figure 3 It is a schematic diagram of the installation structure of the slider assembly of the present invention;

[0022] Figure 4 It is a schematic diagram of the three-dimensional structure of the keel assembly assembly of the present invention;

[0023] Figure 5 It is a schematic diagram of the installation three-dimensional structure of the connecting rod of the present invention;

[0024] Figure 6 It is a schematic diagram of the three-dimensional structure of the upper cover of the present invention;

[0025] Figure 7 It is a schematic diagram of the three-dimensional structure of installing the gypsum board of the present invention on the keel assembly;

[0026] Figure 8 It is a schematic diagram of the three-dimensional structure of the upper connecting cover connected to the keel assembly of the present invention.

[0027] In the figure: 1. Install the top plate; 2. Tie rod; 3. Keel side beam; 4. Gypsum side plate; 5. Gypsum bottom plate; 6. Scaffolding; 7. Roller; 8. Lifting rod; 9. Fastening screws; 1 0. Inclined climbing frame; 11. Guide rail; 12. Winding box; 13. Reinforcement beam; 14. Ring; 15. Upper connecting cover; 16. Connecting rod; 17. U-shaped clamp; 18. Positioning hole; 19. Crossbeam; 20. Lower long groove; 21. T-shaped long groove; 22. Telescopic end block; 23. Expanding groove; 24. Pull rope; 25. Motor; 26. Horizontal drive rod; 27. Upper frame; 28. T-shaped slider; 29. ​​Limiting ring cover; 30. Insert inner groove; 31. Positioning block; 32. Spring; 33. Upper connecting block; 34. Through long hole; 35. Mounting long hole; 36. Locking nut; 37. Fixing nut; 38. Conical rod; 39. Extension rod; 40. Bottom ring; 41. External thread 42. Limiting block; 43. Screw hole. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figures 1 to 8 , the present invention provides a technical solution:

[0030] A quick installation structure for suspended ceilings in public building construction comprises a gypsum board assembly, a keel assembly and a scaffold 6 for suspended ceilings, wherein an upper frame 27 for lifting and lowering is arranged on the scaffold 6, a pull rope 24 for winding up driven by a motor 25 is installed on the upper frame 27 in a transversely retractable manner, a plurality of groups of rollers 7 are arranged at the lower end of the scaffold 6, an upper frame 27 for lifting and lowering driven by a lifting rod 8 is arranged at the upper end of the scaffold 6, an inclined climbing frame 10 is arranged on one side of the scaffold 6, the upper end of the inclined climbing frame 10 extends to the bottom of the keel assembly, a winding box 12 connected by a transverse driving rod 26 is arranged on one side of the upper frame 27, a winding roller for winding up the pull rope 24 is arranged in the winding box 12, the winding roller is driven by the motor 25, an inverted U-shaped guide rail 11 is arranged at the upper end of the winding box 12, and the pull rope 24 extends smoothly along the guide rail 11.

[0031] The scaffolding 6 is conveniently moved by the rollers 7 so that it moves synchronously with the laying of the gypsum board assembly. The inclined climbing frame 10 is used to facilitate the up and down movement of the construction workers. The pull rope 24 is wound up by the drive of the motor 25 to lift the gypsum board assembly. The position of the pull rope 24 is limited by the inverted U-shaped guide rail 11 to ensure its smooth lifting and lowering.

[0032] The keel assembly is fixedly installed on the lower end of the mounting top plate 1, the gypsum board assembly includes a gypsum bottom plate 5 and a gypsum side plate 4, the gypsum bottom plate 5 is installed on the lower end of the keel assembly, the gypsum side plate 4 is fixed to the side of the keel assembly, the keel assembly includes a tie rod 2, a keel side beam 3, a reinforcing beam 13 and a cross beam 19, the upper ends of multiple groups of tie rods 2 are fixed to the mounting top plate 1 by expansion bolts, the lower ends of the tie rods 2 are fixedly connected to the upper ends of the keel side beams 3, the multiple groups of keel side beams 3 are distributed in parallel and at intervals, a cross beam 19 is arranged between adjacent keel side beams 3, a reinforcing beam 13 is arranged between adjacent tie rods 2, a connecting rod 16 is fixedly arranged between the reinforcing beam 13 and the cross beam 19, and the upper end of the connecting rod 16 is fixed on the reinforcing beam 13.

[0033] The keel frame is woven by the keel side beams 3, the cross beams 19 and the reinforcing beams 13, and the keel frame is fixed to the mounting top plate 1 by the pull rods 2.

[0034] The upper end of the cross beam 19 is provided with a plurality of linearly distributed through long holes 34, and the upper end surface of the gypsum base plate 5 is prefabricated with an upper connecting cover 15, and the upper connecting cover 15 is provided with an extension rod 39 extending along the through long holes 34 to the upper end of the cross beam 19, and the pull rope 24 is connected to the extension rod 39, and the gypsum base plate 5 is hoisted to the lower end surface of the keel side beam 3 by winding the pull rope 24.

[0035] By prefabricating and fixing the upper connecting cover 15 on the gypsum base plate 5, drilling or threaded fixing is avoided during the installation of the high-altitude ceiling, and the gypsum is prevented from generating dust due to the fixing drilling process, thereby improving the safety of the construction. At the same time, the cooperation of the pull rope 24 and the extension rod 39 is utilized to realize the hoisting construction of the gypsum base plate 5.

[0036] A bottom ring 40 is vertically provided at the lower end of the connecting rod 16 and is sleeved on the extension rod 39 and pressed on the upper end surface of the cross beam 19. The extension rod 39 is provided with an external thread 41, and a fixing nut 37 pressed on the bottom ring 40 is threadedly installed on the external thread 41.

[0037] After hoisting, the gypsum base plate 5 fits the lower end of the keel side beam 3, and the extension rod 39 passes through the cross beam 19 and extends to be connected to the bottom ring 40. The extension rod 39 is fixed by the fixing nut 37, so that the upper connecting cover 15 and the gypsum base plate 5 are fixed on the cross beam 19 and the connecting rod 16, and the connecting rod 16 is fixed on the reinforcing beam 13. The cross beam 19 is installed on the keel side beam 3 to achieve double-position fixed load-bearing. Therefore, no matter whether the keel side beam 3 or the reinforcing beam 13 is deformed or falls off alone, the gypsum base plate 5 will not fall off.

[0038] Working principle: First, the keel frame is formed by the keel side beams 3, the cross beams 19 and the reinforcing beams 13, and the keel frame is fixed on the installation top plate 1 by the pull rod 2. The upper frame 27 is driven by the lifting rod 8 to extend into the gap of the keel frame, and the position is adjusted by the lateral driving rod 26 to make the pull rope 24 move to the construction position, and then the pull rope 24 is connected with the extension rod 39 to realize the hoisting construction of the gypsum base plate 5.

[0039] After the gypsum base plate 5 is hoisted, the gypsum base plate 5 fits the lower end of the keel side beam 3, and the extension rod 39 passes through the bottom ring 40. The fixing nut 37 is used to fix the extension rod 39 on the connecting rod 16, and the fixing nut 37 is pressed on the upper end surface of the cross beam 19, so that the upper connecting cover 15 and the gypsum base plate 5 are fixed on the cross beam 19 and the connecting rod 16 at the same time, and the connecting rod 16 is fixed on the reinforcing beam 13, and the cross beam 19 is installed on the keel side beam 3 to achieve double-position fixed load-bearing. Therefore, no matter whether the keel side beam 3 or the reinforcing beam 13 is deformed or falls off alone, the gypsum base plate 5 will not fall off.

[0040] Example 2: On the basis of Example 1, in order to realize the convenient disassembly of the gypsum base plate 5, a stepped through hole is prefabricated on the gypsum base plate 5, and a screw hole 43 with the same inner diameter as the small hole at the upper end of the stepped hole is provided at the lower end of the upper cover 15, and a fastening screw 9 is inserted in the stepped hole, and the nut of the fastening screw 9 is pressed on the stepped surface of the stepped hole, and the end thread of the fastening screw 9 is rotatably installed in the screw hole 43.

[0041] By setting screw holes 43 on the upper connecting cover 15, and then utilizing the cooperation between the screw holes 43 and the fastening screws 9, the gypsum base plate 5 and the upper connecting cover 15 are fixedly connected, so that when disassembling, only the fastening screws 9 need to be removed to realize the disassembly of the gypsum base plate 5, without involving the disassembly of the keel frame.

[0042] Embodiment 3: Based on Embodiment 2, in order to realize the precise position hoisting of the gypsum base plate 5, the lower end of the crossbeam 19 is provided with a lower long groove 20, the lower end of the long hole 34 is connected to the lower long groove 20, and the upper end of the upper connecting cover 15 is provided with a cone rod 38, the upper end outer diameter of the cone rod 38 is smaller than the width of the lower long groove 20, and the lower end outer diameter of the cone rod 38 is equal to the width of the lower long groove 20, the end of the extension rod 39 is fixed on the cone rod 38, the cone rod 38 is inserted in the lower long groove 20, and an elastic member is pressed between the cone rod 38 and the upper inner wall of the lower long groove 20. The upper end of the gypsum base plate 5 has multiple groups of countersunk holes distributed in a circumferential array along the stepped hole, and the lower end of the upper connecting cover 15 is provided with multiple groups of limit blocks 42 distributed in a circumferential array, and the limit blocks 42 are inserted in the countersunk holes.

[0043] By providing the tapered rod 38, it is convenient to insert the upper connecting cover 15 into the lower long groove 20. By providing the through long hole 34, it is convenient to perform a small-range position adjustment so that the extension rod 39 accurately corresponds to the bottom ring 40. By providing the elastic member, the gypsum base plate 5 is easily disassembled due to the restoring elastic force of the elastic member during disassembly. By providing the cooperation of the limit block 42 and the countersunk hole, the purpose of limiting the position of the upper connecting cover 15 on the gypsum base plate 5 is achieved, thereby avoiding the upper connecting cover 15 from rotating when the fastening screw 9 is installed.

[0044] Example 4: On the basis of Example 3, in order to facilitate the convenient assembly and assembly of the keel assembly, a T-shaped long groove 21 is provided on one side of the keel side beam 3, and an upper connecting block 33 for connecting the expansion bolt is provided at the upper end of the pull rod 2. The lower end of the pull rod 2 is fixedly connected to the upper inner wall of the T-shaped long groove 21, and a telescopically installed slider assembly is provided at the end of the crossbeam 19. The slider assembly is inserted along the T-shaped long groove 21, and the two end ends of the crossbeam 19 are provided with flared grooves 23. The port height of the flared groove 23 is greater than the opening height of the T-shaped long groove 21, and the slider assembly is inserted along the flared groove 23 and slides into the T-shaped long groove 21.

[0045] By providing the T-shaped long groove 21 and cooperating with the slider assembly, the plug-in installation between the cross beam 19 and the keel side beam 3 is achieved, and by providing the expanded groove 23, the installation of the slider assembly in the T-shaped long groove 21 is facilitated.

[0046] The slider assembly includes a T-shaped slider 28 and a telescopic end block 22, one end of the telescopic end block 22 is fixed to the end of the cross beam 19, and the other end of the telescopic end block 22 is provided with an insert inner groove 30, one side of the T-shaped slider 28 fits the inner wall of the T-shaped long groove 21, and the other side of the T-shaped slider 28 is provided with a cross bar inserted in the insert inner groove 30, and a spring 32 is pressed between the cross bar and the inner wall of the insert inner groove 30, and the port of the insert inner groove 30 is a stepped annular groove, and a limiting ring cover 29 is installed in the stepped annular groove, and the inner diameter of the limiting ring cover 29 is smaller than the outer diameter of the end of the cross bar close to the spring 32.

[0047] By setting elasticity between the T-shaped slider 28 and the telescopic end block 22, elastic assembly of the sliding component is achieved, so that during the installation of the beam 19, the T-shaped slider 28 is inserted into the T-shaped long groove 21, and the telescopic end block 22 is pressed into the T-shaped long groove 21 through elastic extrusion, thereby realizing the lateral position adjustment of the beam 19, and then the beam 19 is released, and under the reset elastic force, the telescopic end block 22 is pressed onto the inner wall of the T-shaped long groove 21, and the length of the beam 19 is adjusted easily through elastic extrusion, thereby facilitating the installation of the beam 19.

[0048] A plurality of spaced apart positioning holes 18 are provided on the upper and lower side walls at the front end of the T-shaped long slot 21. The positioning holes 18 are connected to the inner cavity of the T-shaped long slot 21. A positioning block 31 facing the positioning hole 18 is provided on the outer wall of the telescopic end block 22. The length of the positioning block 31 is less than the compression length of the spring 32.

[0049] By setting the cooperation between the positioning block 31 and the positioning hole 18, after the spring 32 is reset, the telescopic end block 22 slides outward, so that the positioning block 31 is plugged into the positioning hole 18, forming a staggered plug-in, thereby achieving the purpose of fixing the position of the beam 19 and preventing the beam 19 from sliding sideways.

[0050] The pull rod 2 is arranged in a stepped rod shape, and collars 14 are arranged at both ends of the reinforcing beam 13. The collars 14 are sleeved on the pull rod 2 and pressed on the stepped surface of the middle section of the pull rod 2. The upper end of the connecting rod 16 is provided with a pair of mounting long holes 35 respectively located on the upper and lower sides of the reinforcing beam 13. A U-shaped clamp 17 is arranged between the connecting rod 16 and the reinforcing beam 13. The U-shaped clamp 17 is inserted along the reinforcing beam 13, and the two ends of the U-shaped clamp 17 are respectively inserted in the pair of mounting long holes 35, and the ends of the U-shaped clamp 17 are fastened by locking nuts 36.

[0051] By providing the stepped surface of the collar 14 and the connecting rod 2, the installation of the reinforcing beam 13 is facilitated, and the U-shaped clamp 17 and the locking nut 36 are used to facilitate the fixed installation of the connecting rod 16 on the reinforcing cross beam 13. By providing the long installation hole 35, the installation height of the connecting rod 16 can be adjusted, so that the bottom ring 40 at the end of the connecting rod 16 is in contact with the upper end surface of the cross beam 19, and then the position of the connecting rod 16 is fixed.

[0052] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A ceiling quick installation structure for public building construction, comprising a gypsum board assembly for the ceiling, a keel assembly and a scaffold (6), the scaffold (6) being provided with an upper frame (27) for lifting and lowering, a pull rope (24) for winding up driven by a motor (25) being installed on the upper frame (27) in a transversely telescopic manner, the keel assembly being fixedly installed at the lower end of the installation top plate (1), the gypsum board assembly comprising a gypsum bottom plate (5) and a gypsum side plate (4), the gypsum bottom plate (5) being installed at the lower end of the keel assembly, the gypsum side plate (4) being fixed to the side of the keel assembly, Features: The keel assembly comprises a tie rod (2), a keel side beam (3), a reinforcing beam (13) and a cross beam (19); the upper ends of the plurality of tie rods (2) are fixed to the mounting top plate (1) by expansion bolts; the lower ends of the tie rods (2) are fixedly connected to the upper ends of the keel side beams (3); the plurality of keel side beams (3) are arranged in parallel and spaced apart; a cross beam (19) is arranged between adjacent keel side beams (3); a reinforcing beam (13) is arranged between adjacent tie rods (2); the upper end of the cross beam (19) is provided with a plurality of linearly distributed through long holes (34); the upper end surface of the gypsum base plate (5) is prefabricated with an upper connecting cover (15); the upper connecting cover (15) is provided with a plurality of through long holes (34) arranged along the through long holes (34); 4) an extension rod (39) extending to the upper end of the cross beam (19), the pull rope (24) being connected to the extension rod (39), the gypsum base plate (5) being hoisted to the lower end surface of the keel side beam (3) by means of the winding of the pull rope (24), a connecting rod (16) being fixedly arranged between the reinforcing beam (13) and the cross beam (19), the upper end of the connecting rod (16) being fixed on the reinforcing beam (13), the lower end of the connecting rod (16) being vertically arranged with a bottom ring (40) which is sleeved on the extension rod (39) and pressed on the upper end surface of the cross beam (19), the extension rod (39) being provided with an external thread (41), and a fixing nut (37) which is pressed on the bottom ring (40) being threadedly installed on the external thread (41).

2. A quick ceiling installation structure for public building construction according to claim 1, Features: A T-shaped long groove (21) is provided on one side of the keel side beam (3), an upper connecting block (33) for connecting an expansion bolt is provided at the upper end of the pull rod (2), and the lower end of the pull rod (2) is fixedly connected to the upper inner wall of the T-shaped long groove (21). A telescopically mounted slider assembly is provided at the end of the cross beam (19), and the slider assembly is inserted along the T-shaped long groove (21). Expanding grooves (23) are provided at both end portions of the cross beam (19), and the port height of the expanding groove (23) is greater than the opening height of the T-shaped long groove (21). The slider assembly is inserted along the expanding groove (23) and slides into the T-shaped long groove (21).

3. A quick ceiling installation structure for public building construction according to claim 2, Features: The slider assembly comprises a T-shaped slider (28) and a telescopic end block (22), one end of the telescopic end block (22) is fixed to the end of the crossbeam (19), the other end of the telescopic end block (22) is provided with an inserting inner groove (30), one side of the T-shaped slider (28) is in contact with the inner wall of the T-shaped long groove (21), the other side of the T-shaped slider (28) is provided with a cross bar inserted in the inserting inner groove (30), a spring (32) is pressed between the cross bar and the inner wall of the inserting inner groove (30), the end of the inserting inner groove (30) is in the form of a stepped annular groove, and a limiting ring cover (29) is installed in the stepped annular groove, the inner diameter of the limiting ring cover (29) being smaller than the outer diameter of the end of the cross bar close to the spring (32).

4. A quick ceiling installation structure for public building construction according to claim 3, Features: A plurality of groups of spaced positioning holes (18) are provided on the upper and lower side walls at the front end of the T-shaped long groove (21), the positioning holes (18) being connected to the inner cavity of the T-shaped long groove (21), and a positioning block (31) facing the positioning hole (18) is provided on the outer wall of the telescopic end block (22), the length of the positioning block (31) being less than the compression length of the spring (32).

5. A quick ceiling installation structure for public building construction according to claim 2, Features: The lower end of the scaffold (6) is provided with a plurality of groups of rollers (7), the upper end of the scaffold (6) is provided with an upper frame (27) driven to be lifted and lowered by a lifting rod (8), one side of the scaffold (6) is provided with an inclined climbing frame (10), the upper end of the inclined climbing frame (10) extends to the bottom of the keel assembly, one side of the upper frame (27) is provided with a winding box (12) connected by a transverse driving rod (26), the winding box (12) is provided with a winding roller for winding a pull rope (24), the winding roller is driven by a motor (25), the upper end of the winding box (12) is provided with an inverted U-shaped guide rail (11), and the pull rope (24) extends smoothly along the guide rail (11).

6. A quick ceiling installation structure for public building construction according to claim 1, Features: The pull rod (2) is configured as a stepped rod, and sleeve rings (14) are provided at both ends of the reinforcing beam (13). The sleeve rings (14) are sleeved on the pull rod (2) and pressed onto the stepped surface of the middle section of the pull rod (2).

7. A quick ceiling installation structure for public building construction according to claim 6, Features: The upper end of the connecting rod (16) is provided with a pair of mounting long holes (35) respectively located on the upper and lower sides of the reinforcing beam (13); a U-shaped clamp (17) is provided between the connecting rod (16) and the reinforcing beam (13); the U-shaped clamp (17) is inserted along the reinforcing beam (13); and the two ends of the U-shaped clamp (17) are respectively inserted into the pair of mounting long holes (35); the ends of the U-shaped clamp (17) are fastened by locking nuts (36).

8. A quick ceiling installation structure for public building construction according to claim 1, Features: The lower end of the cross beam (19) is provided with a lower long groove (20), the lower end of the through long hole (34) is connected to the lower long groove (20), the upper end of the upper connecting cover (15) is provided with a cone rod (38), the outer diameter of the upper end of the cone rod (38) is smaller than the width of the lower long groove (20), and the outer diameter of the lower end of the cone rod (38) is equal to the width of the lower long groove (20), the end of the extension rod (39) is fixed on the cone rod (38), the cone rod (38) is inserted into the lower long groove (20), and an elastic member is pressed between the cone rod (38) and the upper inner wall of the lower long groove (20).

9. A quick ceiling installation structure for public building construction according to claim 8, Features: The gypsum base plate (5) is prefabricated with a stepped through hole, and the lower end of the upper cover (15) is provided with a screw hole (43) having the same inner diameter as the small hole at the upper end of the stepped hole, and a fastening screw (9) is inserted into the stepped hole, and the nut of the fastening screw (9) is pressed on the stepped surface of the stepped hole, and the end of the fastening screw (9) is threadedly installed in the screw hole (43).

10. A quick ceiling installation structure for public building construction according to claim 9, Features: The upper end of the gypsum base plate (5) is provided with a plurality of countersunk holes distributed in a circular array along the circumference of the stepped holes, and the lower end of the upper connecting cover (15) is provided with a plurality of limit blocks (42) distributed in a circular array, and the limit blocks (42) are inserted into the countersunk holes.

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