Universal suspended ceiling module, mounting structure and assembling and mounting method

The universal ceiling module, composed of irregularly shaped keel and keel corner fittings, enables the factory production of ceiling modules and nail-free and paint-free on-site installation, solving the problems of cumbersome and high-cost existing construction methods and improving construction efficiency and precision.

CN121897113APending Publication Date: 2026-04-21QINGDAO JIHAO BUILDING TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
QINGDAO JIHAO BUILDING TECH CO LTD
Filing Date
2026-02-13
Publication Date
2026-04-21

AI Technical Summary

Technical Problem

The existing ceiling construction process is cumbersome, slow, prone to errors, inefficient, costly, and requires a large area, and requires manual installation on site.

Method used

The universal ceiling module is composed of irregularly shaped keel, keel corner fittings and decorative panels. The modular design allows for nail-free and paint-free installation through the connection of irregularly shaped keel and keel corner fittings, and the module connection plate. It is manufactured in the factory and assembled on site.

Benefits of technology

It improves construction efficiency, reduces construction errors, lowers labor costs, and achieves nail-free and paint-free operation. It is simple to operate and suitable for ceiling installation in various buildings.

✦ Generated by Eureka AI based on patent content.

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Abstract

In order to solve the problems of low construction efficiency, large error, high cost, poor environment and the like caused by field measurement, blanking, mounting and paint spraying by workers during construction of a suspended ceiling in a building, the invention provides a universal suspended ceiling module which comprises a special-shaped keel, a keel corner fitting and a veneer, the special-shaped keels define a rectangular or regular polygonal keel polygonal frame, and the keel corner fittings are located on all vertex angles of the keel polygonal frame and fixedly connected with the two adjacent special-shaped keels. The veneer is as large as the keel polygonal frame and is fixedly connected to the bottom surface of the keel polygonal frame; an opening groove with an outward notch is formed between the outer side of the bottom of the keel polygonal frame and the veneer in the whole circumferential direction or formed in the frame body. According to the invention, nail-free and paint-free operation of suspended ceiling installation is realized, the construction efficiency is greatly improved, the structure is simple, the operation is convenient, the installation efficiency is high, the construction error is small, the requirement on operators is low, the labor cost is low, the precision is high, and the device can be universally applied to the installation of various ceiling suspended ceilings of buildings.
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Description

Technical Field

[0001] This invention relates to the field of building decoration technology, and in particular to a universal ceiling module and its installation structure and installation method. Background Technology

[0002] In current building decoration, the construction of ordinary flat suspended ceilings is still entirely done manually on-site. Specifically, workers cut the joists according to the roof dimensions, fix the joists to the roof, and then fix the decorative panels to the bottom of the joists. Finally, putty and paint are applied to the surface of the decorative panels. This construction method has many drawbacks, including being cumbersome, slow, prone to errors, inefficient, costly in terms of labor, and requiring a large amount of space. Summary of the Invention

[0003] To address the aforementioned problems, this invention provides a universal ceiling module with a simple structure, nail-free and paint-free installation, high efficiency and convenience, small construction error, and low cost, as well as its installation structure and method.

[0004] This invention provides a universal ceiling module, including irregular keel, keel corner pieces, and decorative panels; the irregular keel forms a rectangular or regular polygonal keel polygon frame, and the keel corner pieces are located at each apex corner of the keel polygon frame and are fixedly connected to two adjacent irregular keels; the decorative panels are the same size as the keel polygon frame and are fixedly connected to the bottom surface of the keel polygon frame; an opening groove with an outward groove is formed between the bottom outer side of the keel polygon frame and the decorative panel along the entire circumference, or a groove is formed on the frame itself.

[0005] Furthermore, it includes irregularly shaped keel, keel corner pieces, and decorative panels; the irregularly shaped keel includes a horizontal keel base plate and keel upright plates that are perpendicularly connected to both ends of the horizontal keel base plate; the top of the keel upright plate has a slot with the groove facing downwards; the horizontal keel base plate is stepped, and an opening groove with the groove facing outwards is formed between the high step of the keel and the decorative panel, or the bottom of one side of the keel upright plate of the irregularly shaped keel is bent inwards to form an opening groove with the groove facing outwards.

[0006] Furthermore, the keel corner piece includes two folded bodies with identical structures, symmetrical at a certain included angle, and connected to each other. The included angle is equal to the interior angle of the keel polygonal frame. Each folded body includes a corner piece horizontal base plate and a corner piece vertical plate that is perpendicularly connected to both ends of the corner piece horizontal base plate. The length of the corner piece horizontal base plate is shorter than the length of the keel horizontal base plate. The shape of the keel corner piece is adapted to the irregular keel and can be placed inside the irregular keel. The corner piece vertical plate can be inserted into the slot at the top of the keel vertical plate.

[0007] Furthermore, the corner bracket uprights on the outer side of the keel corner bracket are provided with positioning holes, the positioning holes are equidistant from the intersection line of the two corner bracket uprights, and the positioning holes are equidistant from the bottom of the corner bracket uprights.

[0008] Furthermore, a reinforcing beam is provided between the irregular keel and the polygonal frame of the keel, and the reinforcing beam is fixedly connected to the irregular keel by a connecting buckle; the reinforcing beam includes a horizontal base plate of the reinforcing beam and a vertical plate of the reinforcing beam connected to both ends of the horizontal base plate of the reinforcing beam; the top of the vertical plate of the reinforcing beam has a slot with the groove facing downward; the connecting buckle includes a front vertical plate of the connecting buckle and a side vertical plate of the connecting buckle connected to both ends of the front vertical plate of the connecting buckle; the top of the front vertical plate of the connecting buckle has a slot with the groove facing downward; the length of the front vertical plate of the connecting buckle is shorter than the length of the horizontal base plate of the reinforcing beam, the side vertical plate of the connecting buckle is inserted into the slot at the top of the vertical plate of the reinforcing beam, and the irregular keel vertical plate is inserted into the slot of the front vertical plate of the connecting buckle.

[0009] Furthermore, the end face of the universal ceiling module is sloped inward from top to bottom along its entire circumference. This creates an outward angle between the decorative panels of two adjacent universal ceiling modules.

[0010] The present invention also provides an installation structure including the above-mentioned universal ceiling module, comprising several identical universal ceiling modules and module connecting plates. Each universal ceiling module is spliced ​​with other universal ceiling modules in the circumferential direction according to the number of sides. The opening slots between two adjacent universal ceiling modules are opposite each other, and the module connecting plate is inserted into the two opposite opening slots.

[0011] Furthermore, adjacent universal ceiling module keel corner fittings are connected by screws or locating pins in the locating holes. This ensures that the module units remain flush in both the horizontal and vertical directions.

[0012] Furthermore, the thickness of the module connecting plate is adapted to the opening slot of the universal ceiling module, and its two ends are inclined outwards from top to bottom, with several material-reducing grooves on the surface. This allows the module connecting plate to be easily inserted into the opening slot of the module unit, further reducing costs, and ensuring a firm connection that avoids shaking and noise.

[0013] This invention also provides a method for assembling and installing a universal ceiling module, specifically including the following steps: (1) Connect the keel corner pieces to the adjacent irregular keels and assemble them into a keel polygon frame; (2) Fix the decorative panel to the bottom surface of the keel rectangular frame; (3) Fix the assembled universal ceiling module to the building ceiling; (4) Insert the module connection plates into the circumferential openings of the universal ceiling module according to the number of sides of the keel polygon frame; (5) Hang adjacent general-purpose ceiling modules around the perimeter of the above-mentioned general-purpose ceiling modules according to the number of sides of the keel polygon frame; (6) Align the slots of the later-installed universal ceiling modules with the module connection plates, and insert the module connection plates into the two slots opposite each other of the two adjacent universal ceiling modules to complete the connection between the universal ceiling modules. (7) Continue to install other general-purpose ceiling modules around the perimeter of the subsequently installed general-purpose ceiling module, and so on, until the installation of the entire ceiling of the building is completed.

[0014] Furthermore, between steps (6) and (7) above, the following step is added: screws or locating pins are installed into the two locating holes of the adjacent universal ceiling module keel corner fittings. This adjusts the horizontal alignment of the adjacent universal ceiling modules and ensures they are at the same vertical height.

[0015] Further, between steps (1) and (2) above, the following steps are added: insert the connecting buckle side plate into the slot at the top of the reinforcing beam plate, then place the reinforcing beam between the opposite irregular keels in the keel polygon frame, and then insert the connecting buckle front plate slot into the irregular keel plate.

[0016] Furthermore, between steps (2) and (3) above, the following steps are added: surface treatment of the outer surface of the decorative panel by applying putty and spraying paint.

[0017] The universal ceiling module, installation structure, assembly, and installation method described in this invention transforms the traditional model of carpenters measuring, cutting, and installing ceilings based on the roof conditions of the building site, as well as painters applying putty and painting. The universal ceiling module can be automatically processed into products in the factory and transported to the construction site, enabling nail-free and paint-free ceiling installation, greatly improving construction efficiency. It has a simple structure, is easy to operate, has high installation efficiency, small construction errors, low requirements for operators, low labor costs, and high precision, and can be widely applied to the installation of various ceilings in buildings. Attached Figure Description

[0018] Figure 1 This is a structural diagram of the universal ceiling module described in this invention.

[0019] Figure 2 This is a structural diagram of the irregular-shaped keel in the universal ceiling module described in this invention.

[0020] Figure 3 This is a structural diagram of the non-central keel corner piece of the universal ceiling module described in this invention.

[0021] Figure 4 yes Figure 2 Alien keel and Figure 3 A structural diagram showing the connection relationship of the keel corner fittings.

[0022] Figure 5 yes Figure 4Structural diagram showing the connection between the central reinforcing beam and the irregular keel.

[0023] Figure 6 This is a schematic diagram of the overall installation of two adjacent general-purpose ceiling modules.

[0024] Figure 7 yes Figure 6 Cross-sectional view.

[0025] Figure 8 This is an installation structure diagram of two adjacent general-purpose ceiling modules.

[0026] Figure 9 This is a structural diagram of the module connector.

[0027] Figure 10 This is a cross-sectional view of another irregularly shaped keel in the universal ceiling module described in this invention.

[0028] Part number description in the image: 1-Keeper horizontal base plate; 2-Keeper vertical plate; 3-Keeper high step; 4-Card slot; 5-Corner fitting horizontal base plate; 6-Corner fitting vertical plate; 7-Corner fitting high step; 8-Positioning hole; 9-Gypsum board; 10-Keeper rectangular frame; 11-Module connector; 12-Reinforcing beam; 13-Connecting buckle; 14-Screw; 15-Universal ceiling module; 16-Opening groove. Detailed Implementation

[0029] The following is combined with Figures 1 to 10 The general-purpose ceiling module, installation structure, assembly, and installation method described in this invention are explained in detail.

[0030] like Figure 1 As shown, this invention provides a universal ceiling module, including a rectangular frame 10 and a gypsum board 9 of the same size as the rectangular frame 10. The gypsum board 9 is inserted into the bottom surface of the rectangular frame 10 by screws or adhesive. The rectangular frame 10 includes four irregularly shaped keels (such as...). Figure 2 (as shown) and four keel corner pieces (as shown) Figure 3 (As shown).

[0031] like Figure 2 As shown, the irregular keel is integrally formed, including a keel horizontal base plate 1 and keel vertical plates 2 that are perpendicularly connected to both ends of the keel horizontal base plate 1; the keel horizontal base plate 1 is stepped, divided into a keel low step and a keel high step 3; the top of the keel vertical plate 2 is folded inward to form a U-shaped rolled edge groove 4.

[0032] like Figure 3As shown, the keel corner fitting is integrally formed, comprising two identical folded bodies that are perpendicularly orthogonally connected to each other. Each folded body includes a corner fitting horizontal base plate 5 and corner fitting upright plates 6 perpendicularly connected to both ends of the corner fitting horizontal base plate 5. Gaps are provided between the two outer corner fitting upright plates 6 and between the two inner corner fitting upright plates 6. The shape of the corner fitting horizontal base plate 5 is adapted to the keel horizontal base plate 1, and it is divided into a corner fitting low step and a corner fitting high step 7, with the corner fitting high step 7 located outside the corner fitting horizontal base plate 1. The length of the corner fitting horizontal base plate 5 is shorter than the length of the keel horizontal base plate 1. The keel corner fitting is placed inside the irregular keel, and the corner fitting upright plate 6 can be inserted into the slot 4 at the top of the keel upright plate 2. Positioning holes 8 are provided on both outer corner fitting upright plates 6. The distance between the positioning holes 8 and the intersection line of the corner fitting upright plates 6 is equal, and the distance between the positioning holes 8 and the bottom end of the corner fitting upright plates 6 is equal.

[0033] like Figure 10 As shown, another structure of the irregular keel in this embodiment includes a keel horizontal base plate 1 and keel vertical plates 2 that are perpendicularly connected to both ends of the keel horizontal base plate 1; the keel horizontal base plate 1 is flat, and the bottom of the keel vertical plate 2 on one side of the irregular keel is bent inward to form an opening groove 16 with the groove facing outward, and the keel corner piece is matched accordingly.

[0034] like Figure 1 and Figure 4 As shown, four irregularly shaped keels form a keel rectangle 10, and four keel corner pieces are located at the four corners of the keel rectangle 10. Each keel corner piece is inserted and fixed to the two adjacent irregularly shaped keels.

[0035] like Figure 1 and Figure 5 As shown, the keel rectangular frame 10 is provided with a reinforcing beam 12, and the two ends of the reinforcing beam 12 are respectively fixedly connected to the two shorter irregular keels of the keel rectangular frame 10 through connecting buckles 13. The reinforcing beam 12 and the connecting buckle 13 are integrally formed. The reinforcing beam 12 includes a reinforcing beam horizontal base plate and a reinforcing beam vertical plate connected to both ends of the reinforcing beam horizontal base plate. The top of the reinforcing beam vertical plate is folded inward to form a U-shaped rolled edge slot. The connecting buckle 13 includes a connecting buckle front vertical plate and a connecting buckle side vertical plate connected to both ends of the connecting buckle front vertical plate. The top of the connecting buckle front vertical plate has a slot with the opening facing downward. The length of the connecting buckle front vertical plate is shorter than the length of the reinforcing beam horizontal base plate. The connecting buckle side vertical plate is inserted into the slot at the top of the reinforcing beam vertical plate, and the irregular keel vertical plate is inserted into the slot of the connecting buckle front vertical plate.

[0036] like Figure 5 As shown, the present invention also provides an installation structure comprising the above-mentioned universal ceiling modules, including several identical universal ceiling modules 15 and module connecting plates 11, wherein each universal ceiling module is spliced ​​with four universal ceiling modules on its four sides, as shown. Figure 7 and Figure 8As shown, the slots between two adjacent universal ceiling modules are opposite each other, and the module connecting plate 11 is inserted into the two opposite slots; screws 14 are provided in the two positioning holes 8 of the keel corner fittings of adjacent universal ceiling modules. Since the distance between the positioning holes 8 and the intersection line of the corner fitting upright plate 6 is equal, and the distance between the positioning holes 8 and the bottom end of the corner fitting upright plate 6 is equal, the universal ceiling modules can be kept flush in both the horizontal and vertical directions; the four end faces of the universal ceiling module decorative panel are inclined surfaces from top to bottom inward, and an included angle is formed between two adjacent decorative panels.

[0037] like Figure 9 As shown, the thickness of the module connecting plate 11 is adapted to the opening slot of the universal ceiling module, and its two ends are inclined outward from top to bottom, with several material-reducing grooves on the surface. This makes it easy for the module connecting plate to be inserted into the opening slot of the module unit, further reducing costs, and ensuring a firm connection that avoids shaking and noise.

[0038] This invention also provides a method for assembling and installing a universal ceiling module, specifically including the following steps: (1) Connect the two longer and two shorter irregular keels to the four keel corner pieces respectively, so that the corner piece uprights are inserted into the slots at the top of the keel uprights, and assemble them into a keel rectangular frame. (2) Insert the connecting buckle side plate into the slot at the top of the reinforcing beam plate, then place the reinforcing beam between the opposite irregular keels in the keel polygon frame, and then insert the connecting buckle front plate slot into the irregular keel plate. (3) Fix the gypsum board to the bottom of the rectangular frame of the keel with screws; (4) Apply putty and paint to the outer surface of the gypsum board for surface treatment; (5) The assembled universal ceiling module will be fixedly connected to the building ceiling; (6) Insert the four module connecting plates into the openings around the universal ceiling module respectively; (7) Hang four adjacent general-purpose ceiling modules around the above-mentioned general-purpose ceiling module in accordance with step 4; (8) Align the opening slots of the four universal ceiling modules installed later with the module connection plate respectively, so that the module connection plate is inserted into the two opening slots of two adjacent universal ceiling modules to complete the connection between the universal ceiling modules; (9) Install screws or positioning pins into the two positioning holes of the adjacent universal ceiling module keel corner fittings to further adjust the flatness between the universal ceiling modules; (10) Continue to install other general-purpose ceiling modules around the newly installed general-purpose ceiling module, and so on, until the installation of the entire ceiling of the building is completed.

[0039] The universal ceiling module, installation structure, assembly, and installation method described in this invention transforms the traditional model of carpenters measuring, cutting, and installing ceilings based on the roof conditions of the building site, as well as painters applying putty and painting. The assembly of the universal ceiling module can be completed in the factory, even forming an automated production product. The universal ceiling module is then transported to the building site, enabling nail-free and paint-free ceiling installation, greatly improving construction efficiency. Its structure is simple, easy to operate, has high installation efficiency, small construction errors, low requirements for operators, low labor costs, and high precision, and can be widely applied to the installation of various ceilings in buildings.

[0040] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A universal ceiling module, characterized in that: It includes irregularly shaped keel, keel corner pieces, and decorative panels; the irregularly shaped keel forms a rectangular or regular polygonal keel polygonal frame, and the keel corner pieces are located at each apex of the keel polygonal frame and are fixedly connected to two adjacent irregularly shaped keels; the decorative panels are the same size as the keel polygonal frame and are fixedly connected to the bottom surface of the keel polygonal frame; an opening groove with the groove facing outward is formed between the bottom outer side of the keel polygonal frame and the decorative panels along the entire circumference, or is formed on the frame itself.

2. The universal ceiling module according to claim 1, characterized in that: The irregular keel includes a horizontal base plate and vertical keel plates that are perpendicularly connected to both ends of the horizontal base plate; the top of the vertical keel plate has a slot with the opening facing downwards; the horizontal base plate is stepped, and the high step of the keel forms an opening slot with the opening facing outwards between it and the decorative panel, or the bottom of one side of the vertical keel plate of the irregular keel is bent inwards to form an opening slot with the opening facing outwards.

3. The universal ceiling module according to claim 2, characterized in that: The keel corner piece includes two identical, symmetrical, and interconnected folded bodies with a certain included angle, the included angle being equal to the interior angle of the keel polygonal frame; each folded body includes a corner piece horizontal base plate and a corner piece vertical plate perpendicularly connected to both ends of the corner piece horizontal base plate; the length of the corner piece horizontal base plate is shorter than the length of the keel horizontal base plate, the shape of the keel corner piece is adapted to the irregular keel and can be placed inside the irregular keel, and the corner piece vertical plate can be inserted into the slot at the top of the keel vertical plate.

4. The universal ceiling module according to any one of claims 1 to 3, characterized in that: The corner brackets on the outer side of the keel corner brackets are provided with positioning holes. The positioning holes are equidistant from the intersection line of the two corner brackets and equidistant from the bottom of the corner brackets.

5. The universal ceiling module according to any one of claims 1 to 3, characterized in that: The polygonal frame of the keel has reinforcing beams between the irregular keels. The reinforcing beams are fixedly connected to the irregular keels by connecting buckles. The reinforcing beams include a horizontal base plate and vertical plates connected to both ends of the horizontal base plate. The top of the vertical plate has a downward-facing slot. The connecting buckle includes a front plate and side plates connected to both ends of the front plate. The top of the front plate has a downward-facing slot. The length of the front plate is shorter than the length of the horizontal base plate. The side plates are inserted into the slots at the top of the reinforcing beam plates, and the irregular keel plates are inserted into the slots at the front plate.

6. The universal ceiling module according to claim 4, characterized in that: The polygonal frame of the keel has reinforcing beams between the irregular keels. The reinforcing beams are fixedly connected to the irregular keels by connecting buckles. The reinforcing beams include a horizontal base plate and vertical plates connected to both ends of the horizontal base plate. The top of the vertical plate has a downward-facing slot. The connecting buckle includes a front plate and side plates connected to both ends of the front plate. The top of the front plate has a downward-facing slot. The length of the front plate is shorter than the length of the horizontal base plate. The side plates are inserted into the slots at the top of the reinforcing beam plates, and the irregular keel plates are inserted into the slots at the front plate.

7. The universal ceiling module according to claim 1, 2, 3, or 6, characterized in that: The universal ceiling module decorative panel has an inward sloping end face from top to bottom along its entire circumference.

8. An installation structure comprising the universal ceiling module as described in claim 1, 2, 3, or 6, characterized in that: It includes several identical universal ceiling modules and module connecting plates. Each universal ceiling module is spliced ​​with other universal ceiling modules in the circumferential direction. The opening slots between two adjacent universal ceiling modules are opposite each other, and the module connecting plate is inserted into the two opposite opening slots.

9. An installation structure comprising the universal ceiling module of claim 4, characterized in that: It includes several identical universal ceiling modules and module connecting plates. Each universal ceiling module is spliced ​​with other universal ceiling modules in the circumferential direction. The opening slots between two adjacent universal ceiling modules are opposite each other, and the module connecting plate is inserted into the two opposite opening slots.

10. An installation structure comprising the universal ceiling module of claim 5, characterized in that: It includes several identical universal ceiling modules and module connecting plates. Each universal ceiling module is spliced ​​with other universal ceiling modules in the circumferential direction. The opening slots between two adjacent universal ceiling modules are opposite each other, and the module connecting plate is inserted into the two opposite opening slots.

11. The installation structure of the universal ceiling module according to claim 9, characterized in that: Adjacent general-purpose ceiling module keel corner fittings are connected by screws or positioning pins in the positioning holes.

12. The installation structure of the universal ceiling module according to claim 8, characterized in that: The thickness of the module connecting plate is adapted to the opening slot of the general-purpose ceiling module, and its two ends are inclined outward from top to bottom, with several material reduction grooves on the surface.

13. The installation structure of the universal ceiling module according to claim 9, 10, or 11, characterized in that: The thickness of the module connecting plate is adapted to the opening slot of the general-purpose ceiling module, and its two ends are inclined outward from top to bottom, with several material reduction grooves on the surface.

14. A method for assembling and installing a universal ceiling module, used for assembling and installing the universal ceiling module as described in any one of claims 1 to 3, characterized in that, Includes the following steps: (1) Connect the keel corner pieces to the adjacent irregular keels and assemble them into a keel polygon frame; (2) Fix the decorative panel to the bottom surface of the keel rectangular frame; (3) Fix the assembled universal ceiling module to the building ceiling; (4) Insert the module connection plates into the circumferential openings of the universal ceiling module according to the number of sides of the keel polygon frame; (5) Hang adjacent general-purpose ceiling modules around the perimeter of the above-mentioned general-purpose ceiling modules according to the number of sides of the keel polygon frame; (6) Align the slots of the later-installed universal ceiling modules with the module connection plates, and insert the module connection plates into the two slots opposite each other of the two adjacent universal ceiling modules to complete the connection between the universal ceiling modules. (7) Continue to install other general-purpose ceiling modules around the perimeter of the subsequently installed general-purpose ceiling module, and so on, until the installation of the entire ceiling of the building is completed.

15. A method for assembling and installing a universal ceiling module, used for assembling and installing the universal ceiling module as described in claim 4, characterized in that, Includes the following steps: (1) Connect the keel corner pieces to the adjacent irregular keels and assemble them into a keel polygon frame; (2) Fix the decorative panel to the bottom surface of the keel rectangular frame; (3) Fix the assembled universal ceiling module to the building ceiling; (4) Insert the module connection plates into the circumferential openings of the universal ceiling module according to the number of sides of the keel polygon frame; (5) Hang adjacent general-purpose ceiling modules around the perimeter of the above-mentioned general-purpose ceiling modules according to the number of sides of the keel polygon frame; (6) Align the slots of the later-installed universal ceiling modules with the module connection plates, and insert the module connection plates into the two slots opposite each other of the two adjacent universal ceiling modules to complete the connection between the universal ceiling modules. (7) Install screws or positioning pins into the two positioning holes of the adjacent universal ceiling module keel corner pieces to connect the two keel corner pieces and further adjust the flatness between the universal ceiling modules; (8) Continue to install other general-purpose ceiling modules around the perimeter of the subsequently installed general-purpose ceiling modules, and so on, until the installation of the entire ceiling of the building is completed.

16. A method for assembling and installing a universal ceiling module, used for assembling and installing the universal ceiling module as described in claim 5, characterized in that, Includes the following steps: (1) Connect the keel corner pieces to the adjacent irregular keels and assemble them into a keel polygon frame; (2) Insert the connecting buckle side plate into the slot at the top of the reinforcing beam plate, then place the reinforcing beam between the opposite irregular keels in the keel polygon frame, and then insert the connecting buckle front plate slot into the irregular keel plate. (3) Fix the decorative panel to the bottom surface of the keel rectangular frame; (4) Fix the assembled universal ceiling module to the building ceiling; (5) Insert the module connection plates into the circumferential openings of the universal ceiling module according to the number of sides of the keel polygon frame; (6) Hang adjacent general-purpose ceiling modules around the perimeter of the above-mentioned general-purpose ceiling modules according to the number of sides of the keel polygon frame; (7) Align the slots of the later-installed universal ceiling modules with the module connection plates, so that the module connection plates are inserted into the two slots opposite each other of the two adjacent universal ceiling modules to complete the connection between the universal ceiling modules; (8) Continue to install other general-purpose ceiling modules around the perimeter of the subsequently installed general-purpose ceiling modules, and so on, until the installation of the entire ceiling of the building is completed.

17. A method for assembling and installing a universal ceiling module, used for assembling and installing the universal ceiling module as described in claim 8, characterized in that, Includes the following steps: (1) Connect the keel corner pieces to the adjacent irregular keels and assemble them into a keel polygon frame; (2) Insert the connecting buckle side plate into the slot at the top of the reinforcing beam plate, then place the reinforcing beam between the opposite irregular keels in the keel polygon frame, and then insert the connecting buckle front plate slot into the irregular keel plate. (3) Fix the decorative panel to the bottom surface of the keel rectangular frame; (4) Fix the assembled universal ceiling module to the building ceiling; (5) Insert the module connection plates into the circumferential openings of the universal ceiling module according to the number of sides of the keel polygon frame; (6) Hang adjacent general-purpose ceiling modules around the perimeter of the above-mentioned general-purpose ceiling modules according to the number of sides of the keel polygon frame; (7) Align the slots of the later-installed universal ceiling modules with the module connection plates, so that the module connection plates are inserted into the two slots opposite each other of the two adjacent universal ceiling modules to complete the connection between the universal ceiling modules; (8) Install screws or positioning pins into the two positioning holes of the adjacent universal ceiling module keel corner fittings to connect the two keel corner fittings and further adjust the flatness between the universal ceiling modules; (9) Continue to install other general-purpose ceiling modules around the perimeter of the subsequently installed general-purpose ceiling module, and so on, until the installation of the entire ceiling of the building is completed.

18. The assembly and installation method of the universal ceiling module according to any one of claims 15 to 17, characterized in that: After the step "fix the decorative panel to the bottom of the keel rectangular frame", add the following steps: apply putty and spray paint to the outer surface of the decorative panel for surface treatment.