Suspended ceiling connecting structure and double-layer suspended ceiling

Abstract

The utility model relates to the technical field of building suspended ceilings, and discloses a suspended ceiling connecting structure and a double-layer suspended ceile.The suspended ceiling connecting structure comprises an upper layer keel, a first upper plate, a lower plate and a first connecting plate used for connecting the first upper plate and the lower plate, and a first mounting groove is formed between the first upper plate and the lower plate; first connecting parts are arranged on the side, away from the connecting plate, of the first upper plate and the side, away from the connecting plate, of the lower plate; the lower-layer keel comprises a second upper plate, a supporting part and a second connecting plate used for connecting the second upper plate and the supporting part, a second mounting groove is formed between the second upper plate and the supporting part, and the second connecting part is arranged on the upper side of the second upper plate; and the hanging assembly is suitable for being connected with the first connecting part so as to connect the upper-layer keel with the building, and is suitable for being connected with the first connecting part and the second connecting part so as to connect the lower-layer keel with the upper-layer keel. The double-layer suspended ceiling connecting structure solves the problems that a double-layer suspended ceiling connecting structure is complex, operation is inconvenient, and the construction period is long.

Description

Technical Field

[0001] The utility model relates to the technical field of building suspended ceilings, in particular to a suspended ceiling connection structure and a double-layer suspended ceiling. Background Art

[0002] A suspended ceiling is a kind of top decoration structure in the house environment. It may have the functions of heat preservation, heat insulation, and sound insulation. It is also a hidden layer for engineering structures such as electrical appliances, ventilation and air conditioning, communications and fire protection pipeline equipment. In production workshops with high cleanliness requirements, it is also necessary to set up a suspended ceiling to reduce the entry of dust from various engineering pipelines. A double-layer suspended ceiling refers to a suspended ceiling structure with two layers of top plates stacked vertically, which is usually used in scenes with high sound insulation and cleanliness requirements.

[0003] In the related art, since the double-layer ceiling has a two-layer ceiling structure including an upper ceiling panel and a lower ceiling panel, it is necessary to consider the connection structure between the ceiling panels on the same layer, the connection structure between the upper ceiling panel and the building, and the connection structure between the upper ceiling panel and the lower ceiling panel at the same time. The overall structure is relatively complex, the operation is inconvenient and the construction period is long. Utility Model Content

[0004] In view of this, the utility model provides a ceiling connection structure and a double-layer ceiling to solve the problems of complex double-layer ceiling connection structure, inconvenient operation and long construction period.

[0005] In a first aspect, the utility model provides a ceiling connection structure, comprising:

[0006] An upper keel comprises a first upper plate, a lower plate and a first connecting plate for connecting the first upper plate and the lower plate, a first mounting groove is formed between the first upper plate and the lower plate on both sides of the first connecting plate, the first mounting groove is suitable for installing an upper ceiling panel, and a first connecting portion is provided on a side of the first upper plate away from the first connecting plate and a side of the lower plate away from the first connecting plate; a lower keel comprises a second upper plate, a supporting portion and a second connecting plate for connecting the second upper plate and the supporting portion, a second mounting groove is formed between the second upper plate and the supporting portion on both sides of the second connecting plate, the second mounting groove is suitable for installing a lower ceiling panel, and a second connecting portion is provided on the upper side of the second upper plate; a hanging assembly is suitable for connecting the first connecting portion to connect the upper keel to a building, and is suitable for connecting the first connecting portion and the second connecting portion to connect the lower keel to the upper keel.

[0007] Beneficial effects: By using the upper keel and the lower keel as the splicing nodes of the upper ceiling board and the lower ceiling board respectively, and by setting the corresponding first connection part and the second connection part on the upper keel and the lower keel, the hanging assembly can be connected with the first connection part or the second connection part to connect the upper keel to the building ceiling or connect the lower keel to the upper keel. During construction and installation, the staff first installs the upper keel through the hanging assembly and splices the upper ceiling board through the upper keel, and then connects the lower keel to the upper keel through the hanging assembly, and splices the lower ceiling board on the lower keel, so as to complete the installation of the ceiling. The overall structural components of the double-layer ceiling are relatively few, and the staff need to operate fewer steps, so it is easy to operate and has a short construction period.

[0008] In an optional embodiment, the hanging assembly includes a first hanging rod and a second hanging rod, the first hanging rod is located on the upper side of the upper keel and is suitable for being connected to the first connecting part, the second hanging rod is located between the upper keel and the lower keel, one end of the second hanging rod is suitable for being connected to the first connecting part, and the other end is suitable for being connected to the second connecting part.

[0009] Beneficial effect: the upper keel is connected to the building ceiling by setting the first hanging rod, and the upper keel is connected to the lower keel by the second hanging rod. The structure is simple and the connection structure is stable. The upper ceiling and the lower ceiling are not prone to swing or deflection, and the structural reliability is high.

[0010] In an optional embodiment, the first connecting portion and the second connecting portion are both provided with a clamping groove, and the ends of the first hanging rod and the second hanging rod are respectively provided with a clamping portion adapted to the first connecting portion and the second connecting portion.

[0011] Beneficial effect: Since both the first connecting part and the second connecting part are provided with a card slot, the first hanging rod and the second hanging rod can be quickly connected to the corresponding first connecting part or the second connecting part through the connection between the card slot and the corresponding card connecting part. The operation is simple, which can further simplify the operation and shorten the construction period.

[0012] In an optional embodiment, the clamping portion is a T-nut, and the T-nut is threadedly connected to the first hanging rod, or the T-nut is threadedly connected to the second hanging rod.

[0013] Beneficial effects: By setting the T-nut to achieve the clamping connection with the clamping slot, the structure is simple and the operation is convenient. The T-nut is a universal part with a high degree of replaceability and is easy to repair. At the same time, since the T-nut is connected to the first hanging rod and the second hanging rod by a thread, the position of the T-nut on the first hanging rod or the second hanging rod can be adjusted within a certain range along the axial direction of the rod, which is convenient for adjusting the height position of the corresponding upper keel or lower keel during the construction process.

[0014] In an optional embodiment, the hanging assembly also includes an adjustment structure, which includes an adjustment frame and a connecting rod, the end of the first hanging rod penetrates into the adjustment frame, the clamping portion on the first hanging rod is located on the inner side of the adjustment frame, and the first hanging rod is threadedly connected with an adjustment nut located on the outer side of the adjustment frame, the adjustment nut and the clamping portion on the first hanging rod are jointly pressed against the side wall of the adjustment frame, the connecting rod passes through the bottom wall of the adjustment frame and extends into the clamping groove of the first connecting portion, and two positioning nuts are provided on the connecting rod, one of the positioning nuts is located on the inner side of the adjustment frame, and the other positioning nut is located on the outer side of the adjustment frame and is located in the clamping groove of the first connecting portion.

[0015] Beneficial effect: By passing the first hanging rod through the adjustment frame and positioning the first hanging rod through the adjustment nut and the T-nut of the clamping part, the height of the upper keel can be adjusted in a larger range, which makes it easier for workers to level each keel during use, making construction more convenient and quick.

[0016] In an optional embodiment, when the first hanging rod, the upper keel, the second hanging rod and the lower keel are in an installed state, the first hanging rod, the upper keel, the second hanging rod and the lower keel are located on the same straight line.

[0017] Beneficial effect: Since the first hanging rod, the upper keel, the second hanging rod and the lower keel are located on the same straight line when installed, the load of the structure is transmitted in a straight line direction, and the first hanging rod and the second hanging rod only bear tensile force and are not affected by torque and bending moment, thereby improving the structural reliability and service life of the structure. In addition, the ceiling panel does not need to bear the load transmitted from other ceiling panels except its own weight, thereby avoiding deformation and damage of the ceiling panel.

[0018] In an optional embodiment, the first upper plate and the second upper plate are both provided with a plurality of positioning nail holes, the plurality of positioning nail holes on the first upper plate are distributed on both sides of the first connecting plate, and the plurality of positioning nail holes on the second upper plate are distributed on both sides of the second connecting plate.

[0019] Beneficial effect: By reserving positioning nail holes on the first upper plate and the second upper plate, when the upper ceiling plate and the lower ceiling plate are inserted into the corresponding first installation groove or the second installation groove, the upper ceiling plate and the lower ceiling plate can be positioned and connected with the corresponding upper keel or lower keel by straight nails or screws, avoiding the possibility of the upper ceiling plate or the lower ceiling plate falling out of the upper keel or the lower keel to cause a safety hazard, thereby improving the structural reliability.

[0020] In the second aspect, the utility model also provides a double-layer ceiling, including: an upper ceiling board; a lower ceiling board; the above-mentioned ceiling connection structure, the upper ceiling board is inserted in the first installation groove, and the lower ceiling board is inserted in the second installation groove.

[0021] Beneficial effect: The double-layer ceiling is installed using the above-mentioned ceiling connection structure. Since the connection nodes of each component are integrated on the upper keel and the lower keel, the number of components that the staff needs to operate is small and the operation is convenient, which shortens the construction period of the double-layer ceiling and increases the structural reliability.

[0022] In an optional embodiment, the upper ceiling board and the lower ceiling board both include a ceiling board layer, a clean aluminum board layer and a double-layer gypsum board arranged in sequence.

[0023] Beneficial effect: By setting the ceiling board layer, the structural strength of the upper ceiling board and the lower ceiling board is enhanced, and it is convenient to position the upper ceiling board and the upper keel, and the lower ceiling board and the lower keel through connecting parts such as straight nails and screws. The clean aluminum board layer provides good airtightness for the ceiling structure, so that the ceiling can be used in high-cleanliness usage scenarios, such as biological laboratories and clean workshops. The double-layer gypsum board wraps the clean aluminum board to form a complete ceiling board structure.

[0024] In an optional embodiment, a cavity is provided in the clean aluminum plate layer of the lower ceiling panel, and the cavity is filled with sound insulation cotton.

[0025] Beneficial effect: A cavity is set in the clean aluminum plate layer of the lower ceiling board and filled with sound insulation cotton, which improves the suction capacity of the ceiling. While isolating the pipelines such as the fresh air system and fire protection system above the ceiling structure, it also greatly reduces the transmission of noise and provides a good sound insulation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 A schematic diagram of the overall structure of a suspended ceiling connection structure and a double-layer suspended ceiling according to an embodiment of the utility model;

[0028] Figure 2 A schematic diagram of the structure of an upper keel of a ceiling connection structure according to an embodiment of the utility model;

[0029] Figure 3 This is a schematic structural diagram of a lower keel of a ceiling connection structure according to an embodiment of the utility model;

[0030] Figure 4 It is a structural schematic diagram of a lower ceiling board of a double-layer ceiling according to an embodiment of the utility model;

[0031] Figure 5 This is a schematic diagram of the internal structure of a clean aluminum plate layer in a double-layer ceiling according to an embodiment of the utility model.

[0032] Description of reference numerals:

[0033] 100, upper keel; 101, first upper plate; 102, lower plate; 103, first connecting plate; 104, first mounting groove; 105, first connecting part; 200, lower keel; 201, second upper plate; 202, supporting part; 203, second connecting plate; 204, second mounting groove; 205, second connecting part; 301, first hanging rod; 302, second hanging rod; 303, clamping part; 400, adjustment structure; 401, adjustment frame; 402, connecting rod; 403, adjustment nut; 404, positioning nut; 500, positioning nail hole; 600, upper ceiling board; 700, lower ceiling board; 801, ceiling board layer; 802, clean aluminum board layer; 8021, cavity; 8022, sound insulation cotton; 803, double-layer gypsum board. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0035] Combine the following Figures 1 to 5 , describing an embodiment of the utility model.

[0036] According to an embodiment of the utility model, on the one hand, a ceiling connection structure is provided, including: an upper keel 100, a lower keel 200 and a hanging assembly, wherein the upper keel 100 includes a first upper plate 101, a lower plate 102 and a first connecting plate 103 for connecting the first upper plate 101 and the lower plate 102, a first mounting groove 104 is formed between the first upper plate 101 and the lower plate 102 on both sides of the first connecting plate 103, and the first mounting groove 104 is suitable for installing an upper ceiling plate 600, and a first connecting portion 104 is provided on one side of the first upper plate 101 away from the first connecting plate 103 and a side of the lower plate 102 away from the first connecting plate 103. 05; the lower keel 200 includes a second upper plate 201, a support portion 202 and a second connecting plate 203 for connecting the second upper plate 201 and the support portion 202, a second installation groove 204 is formed between the second upper plate 201 and the support portion 202 on both sides of the second connecting plate 203, the second installation groove 204 is suitable for installing the lower ceiling panel 700, and a second connecting portion 205 is provided on the upper side of the second upper plate 201; a hanging component, suitable for connecting the first connecting portion 105 to connect the upper keel 100 to the building, and suitable for connecting the first connecting portion 105 and the second connecting portion 205 to connect the lower keel 200 to the upper keel 100.

[0037] In this embodiment, by using the upper keel 100 and the lower keel 200 as the splicing nodes of the upper ceiling board 600 and the lower ceiling board 700 respectively, and by setting the corresponding first connection part 105 and the second connection part 205 on the upper keel 100 and the lower keel 200, the hanging assembly can be connected with the first connection part 105 or the second connection part 205 to connect the upper keel 100 to the building ceiling or connect the lower keel 200 to the upper keel 100. During construction and installation, the staff first installs the upper keel 100 through the hanging assembly and splices the upper ceiling board 600 through the upper keel 100, then connects the lower keel 200 to the upper keel 100 through the hanging assembly, and splices the lower ceiling board 700 on the lower keel 200, so as to complete the installation of the ceiling. The overall structural components of the double-layer ceiling are relatively few, and the staff need to operate fewer steps, so it is easy to operate and the construction period is short.

[0038] Specifically, this embodiment does not limit the specific form of the hanging component. The hanging component may be in the shape of a rod. In some embodiments not shown, it may also be in the shape of a rod or other shapes.

[0039] In addition, specifically, in the upper keel 100, the first upper plate 101 and the lower plate 102 are arranged in parallel, the first connecting plate 103 is perpendicular to the first upper plate 101 and is located in the middle of the first upper plate 101, and the two sides of the first connecting plate 103 are respectively connected to the first upper plate 101 and the lower plate 102, so as to divide the space between the first upper plate 101 and the lower plate 102 into two first mounting grooves 104. In the lower keel 200, the second upper plate 201 and the support part 202 are arranged in parallel, the second connecting plate 203 is arranged perpendicular to the second upper plate 201, one side of the second connecting plate 203 is connected to the second upper plate 201, and the other side is connected to the support part 202. The support part 202 is a hollow tubular structure, and the hollow tubular structure improves the overall bearing capacity and bending and torsion resistance of the support part 202.

[0040] It should be noted that the present embodiment does not limit the specific forms of the first connection part 105 and the second connection part 205. The first connection part 105 and the second connection part 205 may be components with a slot structure. In some embodiments not shown, the first connection part 105 and the second connection part 205 may also be connecting ears that are convenient for connection with fasteners such as bolts and screws.

[0041] In one embodiment, the hanging assembly includes a first hanging rod 301 and a second hanging rod 302. The first hanging rod 301 is located on the upper side of the upper keel 100 and is suitable for connecting to the first connecting part 105. The second hanging rod 302 is located between the upper keel 100 and the lower keel 200. One end of the second hanging rod 302 is suitable for connecting to the first connecting part 105, and the other end is suitable for connecting to the second connecting part 205.

[0042] In this embodiment, the upper keel 100 is connected to the building ceiling by setting a first hanging rod 301, and the upper keel 100 is connected to the lower keel 200 by the second hanging rod 302. The structure is simple and the connection structure is stable. The upper ceiling and the lower ceiling are not prone to swing or deflection, and the structural reliability is high.

[0043] In one embodiment, both the first connecting portion 105 and the second connecting portion 205 are provided with a clamping groove, and the ends of the first hanging rod 301 and the second hanging rod 302 are respectively provided with a clamping portion 303 adapted to the first connecting portion 105 and the second connecting portion 205 .

[0044] Specifically, this embodiment does not limit the specific form of the clamping portion 303. The clamping portion 303 can be a T-nut threadedly connected to the first hanging rod 301 or the second hanging rod 302. In some embodiments not shown, the clamping portion 303 can also be a T-shaped block fixed on the first hanging rod 301 or the second hanging rod 302. The clamping portion 303 can also be an L-shaped block.

[0045] In this embodiment, since the first connecting portion 105 and the second connecting portion 205 are both provided with clamping grooves, the first hanging rod 301 and the second hanging rod 302 can be quickly connected to the corresponding first connecting portion 105 or second connecting portion 205 through the connection of the clamping grooves and the corresponding clamping portions 303. The operation is simple, which can further simplify the operation and shorten the construction period.

[0046] In one embodiment, the clamping portion 303 is a T-shaped nut, and the T-shaped nut is threadedly connected to the first hanging rod 301, or the T-shaped nut is threadedly connected to the second hanging rod 302.

[0047] In this embodiment, the clamping with the clamping groove is realized by setting the T-shaped nut. The structure is simple and the operation is convenient. The T-shaped nut is a common part with a high degree of replaceability, which is convenient for maintenance. At the same time, since the T-shaped nut is threadedly connected to the first hanging rod 301 and the second hanging rod 302, the position of the T-shaped nut on the first hanging rod 301 or the second hanging rod 302 can be adjusted within a certain range along the axial direction of the rod, which is convenient for adjusting the height position of the corresponding upper keel 100 or lower keel 200 during the construction process.

[0048] In one embodiment, the hanging assembly further includes an adjusting structure 400. The adjusting structure 400 includes an adjusting frame 401 and a connecting rod 402. The end of the first hanging rod 301 penetrates into the adjusting frame 401. The clamping portion 303 on the first hanging rod 301 is located inside the adjusting frame 401. An adjusting nut 403 is threadedly connected to the outside of the first hanging rod 301 where it is located outside the adjusting frame 401. The adjusting nut 403 and the T-shaped nut of the clamping portion 303 on the first hanging rod 301 jointly press against the side wall of the adjusting frame 401. The connecting rod 402 penetrates through the bottom wall of the adjusting frame 401 and extends into the clamping groove of the first connecting portion 105. Two positioning nuts 404 are provided on the connecting rod 402. One of the positioning nuts 404 is located inside the adjusting frame 401, and the other positioning nut 404 is located outside the adjusting frame 401 and inside the clamping groove of the first connecting portion 105.

[0049] Specifically, the adjusting frame 401 can be a square frame. In some embodiments not shown, the adjusting frame 401 can also be a "C"-shaped frame.

[0050] In this embodiment, by passing the first hanging rod 301 through the adjusting frame 401 and positioning the first hanging rod 301 jointly by the adjusting nut 403 and the T-shaped nut of the clamping portion 303, the height of the upper keel 100 can be adjusted within a larger range, which is convenient for the staff to level each keel during use and makes the construction more convenient and fast.

[0051] In one embodiment, when the first hanging rod 301, the upper keel 100, the second hanging rod 302 and the lower keel 200 are in an installed state, the first hanging rod 301, the upper keel 100, the second hanging rod 302 and the lower keel 200 are located on the same straight line.

[0052] In the present embodiment, since the first hanging rod 301, the upper keel 100, the second hanging rod 302 and the lower keel 200 are located on the same straight line when installed, the load of the structure is transmitted in a straight line direction, and the first hanging rod 301 and the second hanging rod 302 only bear tensile force and are not affected by torque and bending moment, thereby improving the structural reliability and service life of the structure. In addition, the ceiling panel does not need to bear the load transmitted from other ceiling panels except its own weight, thereby avoiding deformation and damage of the ceiling panel.

[0053] Specifically, on the upper keel 100 , the first connection portion 105 is aligned with the first connection plate 103 , and on the lower keel 200 , the second connection portion 205 is aligned with the second connection plate 203 .

[0054] In one embodiment, a plurality of positioning pin holes 500 are provided on the first upper plate 101 and the second upper plate 201 . The plurality of positioning pin holes 500 on the first upper plate 101 are distributed on both sides of the first connecting plate 103 , and the plurality of positioning pin holes 500 on the second upper plate 201 are distributed on both sides of the second connecting plate 203 .

[0055] In this embodiment, by reserving positioning nail holes 500 on the first upper plate 101 and the second upper plate 201, when the upper ceiling panel 600 and the lower ceiling panel 700 are inserted into the corresponding first installation groove 104 or the second installation groove 204, the upper ceiling panel 600 and the lower ceiling panel 700 can be positioned and connected with the corresponding upper keel 100 or the lower keel 200 by straight nails or screws, thereby avoiding the possibility of the upper ceiling panel 600 or the lower ceiling panel 700 escaping from the upper keel 100 or the lower keel 200 to cause a safety hazard, thereby improving the structural reliability.

[0056] According to an embodiment of the utility model, on the other hand, a double-layer ceiling is also provided, an upper ceiling panel 600, and a lower ceiling panel 700; in the above-mentioned ceiling connection structure, the upper ceiling panel 600 is inserted in the first installation groove 104, and the lower ceiling panel 700 is inserted in the second installation groove 204.

[0057] In this embodiment, the double-layer ceiling is installed using the above-mentioned ceiling connection structure. Since the connection nodes of each component are integrated on the upper keel 100 and the lower keel 200, the number of components that the staff needs to operate is small and the operation is convenient, which shortens the construction period of the double-layer ceiling and increases the structural reliability.

[0058] In one embodiment, the upper ceiling panel 600 and the lower ceiling panel 700 each include a ceiling panel layer 801 , a clean aluminum panel layer 802 , and a double-layer gypsum panel 803 , which are sequentially arranged.

[0059] In this embodiment, by providing the ceiling board layer 801, the structural strength of the upper ceiling board 600 and the lower ceiling board 700 is enhanced, and it is convenient to position the upper ceiling board 600 with the upper keel 100, and the lower ceiling board 700 with the lower keel 200 through connecting parts such as straight nails and screws. The clean aluminum board layer 802 provides good airtightness for the ceiling structure, so that the ceiling can be used in high-cleanliness usage scenarios, such as biological laboratories and clean workshops. The double-layer gypsum board 803 wraps the clean aluminum plate to form a complete ceiling board structure.

[0060] In one embodiment, a cavity 8021 is provided in the clean aluminum plate layer 802 of the lower ceiling panel 700 , and the cavity 8021 is filled with sound insulation cotton 8022 .

[0061] Specifically, the sound insulation cotton 8022 can be glass fiber cotton or other materials with sound-absorbing function.

[0062] In this embodiment, a cavity 8021 is set in the clean aluminum plate layer 802 of the lower ceiling panel 700 and filled with sound insulation cotton 8022, which improves the suction capacity of the ceiling. While isolating the pipelines such as the fresh air system and fire protection system above the ceiling structure, it also greatly reduces the transmission of noise and provides a good sound insulation effect.

[0063] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A ceiling connection structure, characterized in that: include: An upper keel (100) comprises a first upper plate (101), a lower plate (102) and a first connecting plate (103) for connecting the first upper plate (101) and the lower plate (102); a first mounting groove (104) is formed between the first upper plate (101) and the lower plate (102) on both sides of the first connecting plate (103); the first mounting groove (104) is suitable for mounting an upper ceiling plate (600); a first connecting portion (105) is provided on a side of the first upper plate (101) away from the first connecting plate (103) and a side of the lower plate (102) away from the first connecting plate (103); The lower layer keel (200) comprises a second upper plate (201), a support portion (202) and a second connecting plate (203) for connecting the second upper plate (201) and the support portion (202); a second installation groove (204) is formed between the second upper plate (201) and the support portion (202) on both sides of the second connecting plate (203); the second installation groove (204) is suitable for installing a lower layer ceiling plate (700); and a second connecting portion (205) is provided on the upper side of the second upper plate (201); The hanging assembly is suitable for connecting the first connection part (105) to connect the upper keel (100) to the building ceiling, and is suitable for connecting the first connection part (105) and the second connection part (205) to connect the lower keel (200) to the upper keel (100).

2. The ceiling connection structure according to claim 1, characterized in that: The hanging assembly comprises a first hanging rod (301) and a second hanging rod (302), wherein the first hanging rod (301) is located on the upper side of the upper keel (100) and is suitable for being connected to the first connecting portion (105), and the second hanging rod (302) is located between the upper keel (100) and the lower keel (200), and one end of the second hanging rod (302) is suitable for being connected to the first connecting portion (105), and the other end is suitable for being connected to the second connecting portion (205).

3. The ceiling connection structure according to claim 2, characterized in that: The first connecting portion (105) and the second connecting portion (205) are both provided with a clamping groove, and the ends of the first hanging rod (301) and the second hanging rod (302) are respectively provided with a clamping portion (303) adapted to the first connecting portion (105) and the second connecting portion (205).

4. The ceiling connection structure according to claim 3, characterized in that: The clamping portion (303) is a T-shaped nut, and the T-shaped nut is threadedly connected to the first hanging rod (301), or the T-shaped nut is threadedly connected to the second hanging rod (302).

5. The ceiling connection structure according to claim 4, characterized in that: The hanging assembly further comprises an adjusting structure (400), wherein the adjusting structure (400) comprises an adjusting frame (401) and a connecting rod (402), wherein the end of the first hanging rod (301) penetrates into the adjusting frame (401), the clamping portion (303) on the first hanging rod (301) is located inside the adjusting frame (401), and an adjusting nut (403) is threadedly connected to the outside of the adjusting frame (401) on the first hanging rod (301), and the adjusting nut (403) is connected to the first hanging rod (301). The clamping parts (303) on the first connecting part (105) are pressed against the side wall of the adjusting frame (401) together, the connecting rod (402) passes through the bottom wall of the adjusting frame (401) and extends into the clamping groove of the first connecting part (105), and two positioning nuts (404) are provided on the connecting rod (402), one of the positioning nuts (404) is located on the inner side of the adjusting frame (401), and the other positioning nut (404) is located on the outer side of the adjusting frame (401) and in the clamping groove of the first connecting part (105).

6. The ceiling connection structure according to claim 3, characterized in that: When the first hanging rod (301), the upper keel (100), the second hanging rod (302) and the lower keel (200) are in an installed state, the first hanging rod (301), the upper keel (100), the second hanging rod (302) and the lower keel (200) are located on the same straight line.

7. The ceiling connection structure according to claim 1, characterized in that: A plurality of positioning pin holes (500) are provided on both the first upper plate (101) and the second upper plate (201); the plurality of positioning pin holes (500) on the first upper plate (101) are distributed on both sides of the first connecting plate (103); and the plurality of positioning pin holes (500) on the second upper plate (201) are distributed on both sides of the second connecting plate (203).

8. A double-layer ceiling, characterized in that: include: Upper ceiling panel (600); Lower ceiling panel (700); In the ceiling connection structure described in any one of claims 1 to 7, the upper ceiling panel (600) is inserted into the first installation groove (104), and the lower ceiling panel (700) is inserted into the second installation groove (204).

9. The double-layer ceiling according to claim 8, characterized in that: The upper ceiling board (600) and the lower ceiling board (700) both include a ceiling board layer (801), a clean aluminum board layer (802) and a double-layer gypsum board (803) which are arranged in sequence.

10. The double-layer ceiling according to claim 9, characterized in that: A cavity (8021) is provided in the clean aluminum plate layer (802) of the lower ceiling panel (700), and the cavity (8021) is filled with sound insulation cotton (8022).

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