A crack-resistant reinforced ceiling structure

Abstract

The present application relates to the field of suspended ceiling technology, and discloses a suspended ceiling structure with crack resistance reinforcement, including a hanger connected to the top of the wall, a main keel connected to the hanger through a hanging piece, and a secondary keel connected to the keel, on which an anti-crack plate is installed, and the side of the secondary keel that cooperates with the anti-crack plate is provided with an upper slide rail and a lower slide rail extending in the length direction and distributed up and down in the height direction; it also includes a sliding assembly, which is arranged on both sides of the vertical direction of the anti-crack plate and the slide rail, and the sliding assembly is respectively slidably matched with the upper slide rail and the lower slide rail and is rotatably connected to the anti-crack plate; the anti-crack plate rotates relative to the sliding assembly to make the anti-crack plate change between the horizontal and inclined states. The present application combines the sliding cooperation between the anti-crack plate and the secondary keel, the anti-crack plate can form an inclined state, and two slide rails are arranged, so that the anti-crack plate can slide to partially or completely overlap with other anti-crack plates after tilting, so that an opening is left on the suspended top layer, which is convenient for observing or repairing the upper pipeline.

Description

Technical Field

[0001] The present application relates to the field of suspended ceiling technology, and in particular to a crack-resistant reinforced suspended ceiling structure. Background Art

[0002] A suspended ceiling refers to a kind of decoration on the top of a house's living environment. In addition to its functions of heat preservation, heat insulation, and sound insulation, it is also a concealed layer for electrical, ventilation and air conditioning, communications, fire protection, and alarm pipeline equipment. When it is necessary to inspect the pipelines between the suspended ceiling and the roof, it is necessary to first remove part of the suspended ceiling to expose the internal pipelines and leave an inspection port. The suspended ceiling needs to be restored after removal. The existing suspended ceiling panels mainly have two installation methods: the suspended ceiling panels are placed on the keel frame and the suspended ceiling panels are clamped on the keel frame. The former is easy to remove, but the installation is unstable and it is easy to fall due to aging or slight vibration of the panel; although the latter is firmly installed, when it needs to be removed for inspection, it can only be violently removed or the original clamping structure can be released, which can easily cause damage or deformation of the suspended ceiling panels, making them impossible to restore or cracking. Summary of the invention

[0003] In order to solve the problem in the prior art that it is difficult to dismantle the suspended ceiling for maintenance or difficult to restore it after dismantling due to defects in the installation of the suspended ceiling, the present application provides a crack-resistant reinforced ceiling structure which uses an anti-crack plate as a suspended ceiling plate and forms a sliding connection between the anti-crack plate and the keel. By sliding the anti-crack plate, an inspection opening is left on the suspended ceiling surface, thereby achieving the effect of installation reinforcement and facilitating maintenance.

[0004] In order to achieve the above purpose, the technical solution adopted in this application is:

[0005] A crack-resistant reinforced ceiling structure comprises a hanger connected to a wall top, a main keel connected to the hanger through a hanging piece, and a secondary keel connected to the keel, an anti-crack plate is mounted on the secondary keel, and the side of the secondary keel that cooperates with the anti-crack plate is provided with an upper slide rail and a lower slide rail extending along the length direction and distributed up and down in the height direction; it also comprises a sliding assembly, which is arranged on both sides of the anti-crack plate in a vertical direction to the slide rail, the sliding assembly is respectively slidably matched with the upper slide rail and the lower slide rail and is rotatably connected to the anti-crack plate; the anti-crack plate rotates relative to the sliding assembly to make the anti-crack plate switch between a horizontal state and an inclined state.

[0006] The existing suspended ceiling is mainly composed of hanging rods, keel frames and cover panels. The hanging rods connect the entire suspended ceiling system to the wall top and transfer the entire suspended ceiling load to the part of the wall. The keel frame mainly supports and fixes the cover panel. The connection between the cover panel and the keel frame is mainly achieved by placing the cover panel on the keel frame or forming a detachable clamping connection between the cover panel and the keel frame. Although the placing method is convenient for removing the cover panel, the unstable installation of the cover panel may cause it to fall off and cause potential danger. The clamping method may easily cause deformation of the clamping part when the cover panel is removed, making it difficult to restore the installation or unstable to restore the installation.

[0007] The ceiling provided by this solution has a part of the same structure as the prior art, and uses a suspension rod to connect to the top of the wall and transfer the load. A hanging piece is set at the bottom of the suspension rod. The setting height of the hanging piece determines the height of the ceiling. A main keel is set on the hanging piece, and a secondary keel is connected to the main keel, thereby forming a supporting structure of the ceiling system. In this solution, the structure of the secondary keel and the connection method between the secondary keel and the anti-crack plate are creatively improved. Specifically, the anti-crack plate is slidably installed on the secondary keel through a sliding component, so that the anti-crack plate has the basic conditions to slide relative to the secondary keel.

[0008] It is worth mentioning that after the anti-crack plates are installed, they are in close contact with each other. In order to allow the anti-crack plates to have space to slide, two upper and lower slide rails are set on the side of the secondary keel. The sliding direction of the anti-crack plates is set in the front-to-back direction. The sliding components set on the front and rear sides of the anti-crack plates cooperate with the two slide rails respectively. Under normal conditions, the anti-crack plates should be in a horizontal state, and the two slide rails are not at the same level. In order to maintain the level of the anti-crack plates, the sliding components that cooperate with the upper slide rail should be additionally provided with components to make up for the height difference between the upper slide rail and the lower slide rail. When the anti-crack plates need to be slid, due to the rotational connection between the anti-crack plates and the sliding components, the anti-crack plates are pushed upward, and the components that make up for the height difference in the sliding components that cooperate with the upper slide rail rotate, so that the anti-crack plates are tilted, thereby being staggered with the anti-crack plates next to them, and having space to slide. The sliding cooperation between the anti-crack plate and the secondary keel in this scheme can not only fix the anti-crack plate in the secondary keel through the slide rail, making its installation more stable, but also remove it without damaging the anti-crack plate to clear the inspection port, thereby avoiding the occurrence of cracks and improving the convenience of maintenance.

[0009] Furthermore, the sliding assembly includes a first sliding assembly cooperating with the lower sliding rail and a second sliding assembly cooperating with the upper sliding rail, and the second sliding assembly rotates relative to the secondary keel to change the inclination angle of the anti-crack plate.

[0010] Furthermore, the second sliding assembly includes a second rotating shaft fixedly connected to the anti-crack plate, and slide plates are provided at both ends of the second rotating shaft on the outside of the anti-crack plate, and a second sliding member cooperating with the upper slide rail is hingedly provided on the slide plate.

[0011] Furthermore, the first sliding assembly includes a first rotating shaft connected to the anti-crack plate, and the first sliding members cooperating with the lower rail are rotatably connected to the anti-crack plate at both ends of the first rotating shaft, and the anti-crack plate rotates relative to the first rotating shaft or the first sliding member. The rotatable connection between the first sliding assembly and the anti-crack plate includes two connection modes: the first rotating shaft and the anti-crack plate are rotatably connected, and the first sliding member is fixedly connected to the first rotating shaft; or the first rotating shaft and the anti-crack plate are fixedly connected, and the first sliding member is rotatably connected to the first rotating shaft. In this connection mode, the anti-crack plate rotates relative to the first sliding member together with the first rotating shaft.

[0012] Furthermore, the width of the upper slide rail is smaller than that of the lower slide rail, and the slide plate is located outside the upper slide rail. This allows the slide plate to provide sufficient space for rotation when the anti-crack plate rotates.

[0013] Furthermore, when the anti-crack plate is horizontal, the A surface of the bottom of the slide plate is in contact with the surface of the lower slide rail. The bottom surface of the slide plate always keeps in contact with the surface of the lower slide rail, so that the lower slide rail can provide additional support for the anti-crack plate, thereby improving the stability of the installation of the anti-crack plate.

[0014] Furthermore, the slide plate is hinged to the second rotating shaft.

[0015] Furthermore, when the anti-crack plate rotates from a horizontal state to an inclined state, the B surface of the side surface of the slide plate that is connected to the A surface moves to contact the surface of the lower sliding rail.

[0016] Furthermore, a limit plate is provided at the edge of the lower slide rail, and the limit plate is close to the surface of the anti-crack plate and contacts the anti-crack plate. This solution can reduce the gap between the anti-crack plate and the secondary keel, improve the aesthetics, and prevent dust accumulation.

[0017] Furthermore, the secondary keel is a mirror-symmetrical structure, the secondary keel includes an inverted triangle mounting portion arranged at the top, the main keel is provided with a mounting hole adapted to the mounting portion, the mounting portion cooperates with the mounting hole to allow the secondary keel to be plugged into the main keel. The secondary keel with a mirror-symmetrical structure can reduce the use of secondary keels, and the anti-cracking plates can be directly installed on both sides.

[0018] The beneficial effects of the present application are: by means of the sliding fit between the anti-crack plate and the secondary keel, the ability of the anti-crack plate to rotate relative to the secondary keel to form an inclined state, and the provision of two slide rails, the anti-crack plate can slide after tilting to partially or completely overlap with other anti-crack plates, leaving an opening on the suspended top layer for easy observation or maintenance of upper pipelines. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 It is a schematic diagram of the overall installation structure of this application;

[0021] Figure 2 It is a schematic diagram of the structure of a single anti-cracking plate in the present application in a horizontal state after installation;

[0022] Figure 3 yes Figure 2 A local enlarged schematic diagram of the middle A;

[0023] Figure 4 It is a schematic diagram of the disassembled structure of each component in this application;

[0024] Figure 5 yes Figure 4 A partial enlarged schematic diagram of point B in the middle;

[0025] Figure 6 It is a schematic diagram of the structure of a single anti-cracking plate in the present application in an inclined state after installation;

[0026] Figure 7 yes Figure 6 A partial enlarged schematic diagram of point C in the middle;

[0027] Figure 8 It is a schematic diagram of the overall structure of multiple adjacent anti-cracking panels of the present application in an inclined state.

[0028] In the figure: 1- suspension rod; 2- hanging part; 3- main keel; 301- mounting hole; 4- secondary keel; 401- lower slide rail; 4011- limiting plate; 402- upper slide rail; 403- mounting part; 5- anti-crack plate; 6- first rotating shaft; 7- first sliding part; 8- second rotating shaft; 9- sliding plate; 901- A surface; 902- B surface; 10- second sliding part. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0031] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0032] In the description of this application, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product of the application is usually placed when in use. It is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, if the terms "first", "second", etc. appear in the description of this application, they are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0033] In addition, if the terms "horizontal" or "vertical" appear in the description of this application, it does not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0034] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0035] Embodiment 1:

[0036] like Figure 1-3 The illustrated structure is a crack-resistant reinforced ceiling structure, comprising a hanger 1 connected to the top of a wall, a main keel 3 connected to the hanger 1 via a hanger 2, and a secondary keel 4 connected to the keel, an anti-crack plate 5 being mounted on the secondary keel 4, and an upper slide rail 402 and a lower slide rail 401 extending in the length direction and distributed up and down in the height direction on the side where the secondary keel 4 cooperates with the anti-crack plate 5; the structure also comprises a sliding assembly, which is arranged on both sides of the anti-crack plate 5 in a vertical direction to the slide rail, the sliding assembly respectively slidingly cooperates with the upper slide rail 402 and the lower slide rail 401 and is rotationally connected to the anti-crack plate 5; the anti-crack plate 5 rotates relative to the sliding assembly to allow the anti-crack plate 5 to transition between a horizontal state and an inclined state.

[0037] Here’s how it works:

[0038] The suspension rod 1 is connected to the top of the wall and transfers the load. A hanging part 2 is set at the bottom of the suspension rod 1. The setting height of the hanging part 2 determines the height of the ceiling. A main keel 3 is set on the hanging part 2. A secondary keel 4 is fixed on the main keel 3. The anti-crack plate 5 is fixed on the secondary keel 4. The connection between the anti-crack plate 5 and the secondary keel 4 is achieved by improving the structure of the secondary keel 4 and the anti-crack plate 5. Specifically, the side of the secondary keel 4 that cooperates with the anti-crack plate 5 is set as an upper and lower slide rail, and the slide rail extends along the length direction of the secondary keel 4. Figure 2 The length direction of the middle auxiliary keel 4 is the front-to-back direction. The front and rear sides of the anti-crack plate 5 are respectively provided with sliding components, and the front and rear sliding components are respectively matched with a slide rail.

[0039] It is worth noting that after the anti-crack plate 5 is installed, the anti-crack plate 5 is in close contact with each other. In order to allow the anti-crack plate 5 to have space to slide, two upper and lower slide rails are set on the side of the secondary keel 4. The sliding direction of the anti-crack plate 5 is set to the front-to-back direction, and the sliding components set on the front and rear sides of the anti-crack plate 5 are respectively matched with the two slide rails. Under normal conditions, the anti-crack plate 5 should be in a horizontal state, and the two slide rails are not at the same level. In order to keep the anti-crack plate 5 horizontal, the sliding component matched with the upper slide rail 402 should be additionally provided with components to make up for the height difference between the upper slide rail 402 and the lower slide rail 401. When the anti-crack plate 5 needs to be slid, due to the rotational connection between the anti-crack plate 5 and the sliding component, the anti-crack plate 5 is pushed upward, and the component that makes up for the height difference in the sliding component matched with the upper slide rail 402 rotates, so that the anti-crack plate 5 is in an inclined state, thereby staggered with the anti-crack plate 5 next to it, and has space to slide.

[0040] like Figure 1 As shown in FIG. 1 , after the suspended ceiling is installed, the anti-crack plate 5 is in a horizontal state. When it is necessary to check or repair the pipeline above the suspended ceiling layer, the plurality of anti-crack plates 5 are transformed into Figure 6-8The inclined state shown is pushed so that the plurality of anti-cracking plates 5 partially overlap and leave openings.

[0041] Embodiment 2:

[0042] This embodiment is further optimized and limited based on the embodiment 1.

[0043] The sliding assembly includes a first sliding assembly matched with the lower sliding rail 401 and a second sliding assembly matched with the upper sliding rail 402 . The second sliding assembly rotates relative to the secondary keel 4 to change the inclination angle of the anti-crack plate 5 .

[0044] Specific structure such as Figure 4-5 As shown, the second sliding assembly includes a second rotating shaft 8 fixedly connected to the anti-crack plate 5, and slide plates 9 are provided at both ends of the second rotating shaft 8 on the outside of the anti-crack plate 5, and a second sliding member 10 cooperating with the upper slide rail 402 is hingedly provided on the slide plate 9. The slide plate 9 is used in the second sliding member 10 to make up for the height difference between the upper slide rail 402 and the lower slide rail 401 so that the anti-crack plate 5 can be in a horizontal state after daily installation. In order to make the anti-crack plate 5 tiltable, the slide plate 9 is hinged to the second rotating shaft 8 and the second sliding member 10 respectively. When the anti-crack plate 5 needs to be slid to vacate the inspection port, the anti-crack plate 5 is pushed upward from the side close to the anti-crack plate 5 cooperating with the upper slide rail 402, thereby driving the second rotating shaft 8 to move upward, and at the same time driving the slide plate 9 to rotate relative to the second sliding member 10. It is worth noting that the function of the slide plate 9 is only to make up for the height difference between the upper slide rail 402 and the lower slide rail 401, and to provide conditions for the inclination of the anti-cracking plate 5 through the hinge with the second sliding member 10, and essentially plays a role similar to a connecting rod. Therefore, the shape of the slide plate 9 in Figure 5 is only an example in this embodiment. In addition, the slide plate 9 can also be set to a variety of shapes such as rod-shaped, disc-shaped or strip-shaped.

[0045] like Figure 3-4 As shown, the first sliding assembly includes a first rotating shaft 6 connected to the anti-crack plate 5, and the first sliding members 7 cooperating with the lower sliding rail 401 are rotatably connected at both ends of the first rotating shaft 6 outside the anti-crack plate 5, and the anti-crack plate 5 rotates relative to the first rotating shaft 6 or the first sliding member 7. The rotational connection between the first sliding assembly and the anti-crack plate 5 includes two connection modes: the first rotating shaft 6 and the anti-crack plate 5 are rotationally connected, and the first sliding member 7 is fixedly connected to the first rotating shaft 6; or the first rotating shaft 6 and the anti-crack plate 5 are fixedly connected, and the first sliding member 7 is rotationally connected to the first rotating shaft 6. In this connection mode, the anti-crack plate 5 rotates relative to the first sliding member 7 together with the first rotating shaft 6.

[0046] It is worth noting that the first sliding member 7 and the second sliding member 10 only need to be able to slide relative to the slide rail. Therefore, the first sliding member 7 and the second sliding member 10 can be in the shape of a rectangular slider or a roller, etc. The roller shape in the figure is only an example.

[0047] It is worth noting that, due to the rotational cooperation between the anti-crack plate 5 and the first rotating shaft 6 or the rotational cooperation between the first rotating shaft 6 and the first sliding member 7, when the anti-crack plate 5 moves upward, the actual movement trajectory is an arc formed by rotating around the axis of the first rotating shaft 6.

[0048] Embodiment 3:

[0049] This embodiment is further optimized and limited based on the embodiment 2.

[0050] like Figure 3 and 7 As shown, the width of the upper slide rail 402 is smaller than the width of the lower slide rail 401, and the slide plate 9 is located outside the upper slide rail 402. When the anti-crack plate 5 is horizontal, the A surface 901 at the bottom of the slide plate 9 contacts the surface of the lower slide rail 401.

[0051] Here’s how it works:

[0052] The width of the upper slide rail 402 is smaller than that of the lower slide rail 401, providing sufficient space for the rotation of the slide plate 9 when the anti-crack plate 5 rotates. At the same time, when the anti-crack plate 5 is horizontal, the bottom surface of the slide plate 9 always keeps in contact with the surface of the lower slide rail 401, so that the lower slide rail 401 can provide additional support for the anti-crack plate 5, thereby improving the stability of the installation of the anti-crack plate 5.

[0053] Embodiment 4:

[0054] Based on Embodiment 3, this embodiment further optimizes and limits the connection and structure of the slide plate 9.

[0055] The slide plate 9 is hinged to the second rotating shaft 8. When the anti-crack plate 5 rotates from a horizontal state to an inclined state, the B surface 902 in the side of the slide plate 9 connected to the A surface 901 moves to contact the surface of the lower slide rail 401. When in use, when the anti-crack plate 5 is pushed upward, on the one hand, the slide plate 9 can move upward and rotate around the second sliding member 10 under the action of the second rotating shaft 8. On the other hand, due to the hinged action of the slide plate 9 and the second rotating shaft 8, the second sliding member 10 can slide a short distance until the B surface 902 forms a surface contact with the surface of the lower slide rail 401. The slide plate 9 plays a role in determining the upper limit of the inclination angle of the anti-crack plate 5 and keeps the anti-crack plate 5 in an inclined state. When the anti-crack plate 5 is slid open to leave an inspection port, it can prevent the anti-crack plate 5 from automatically returning to a horizontal state and colliding with the anti-crack plate 5 below. Therefore, when the anti-crack plate 5 needs to be restored from an inclined state to a horizontal state, manual operation is required. In order to facilitate the reverse rotation of the slide plate 9 to the state where the A surface 901 contacts the lower sliding rail 401, an arc transition can be set between the A surface 901 and the B surface 902.

[0056] Embodiment 5:

[0057] Based on any of the above embodiments, in order to improve the aesthetics and stability of the overall ceiling system, this embodiment further optimizes and limits the coordination between the anti-crack plate 5 and the secondary keel 4 and between the secondary keel 4 and the main keel 3.

[0058] like Figure 3-4 The edge of the lower slide rail 401 is provided with a limit plate 4011, and the surface of the limit plate 4011 close to the anti-crack plate 5 is in contact with the anti-crack plate 5. The secondary keel 4 is a mirror-symmetrical structure, and the secondary keel 4 includes an inverted triangle mounting portion 403 arranged on the top, and the main keel 3 is provided with a mounting hole 301 adapted to the mounting portion 403, and the mounting portion 403 cooperates with the mounting hole 301 to enable the secondary keel 4 to be plugged into the main keel 3.

[0059] The setting of the limit plate 4011 in this embodiment can prevent the first sliding member 7 from falling out, and can make the outer surface of the limit plate 4011 contact or have only a very small gap with the side of the anti-crack plate 5, thereby reducing the gap between the anti-crack plate 5 and the secondary keel 4, improving the aesthetics, and preventing dust accumulation. The secondary keel 4 is directly set to a mirror symmetrical structure, which can reduce the use of the secondary keel 4, and the anti-crack plates 5 are directly installed on both sides.

[0060] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A crack-resistant reinforced ceiling structure, comprising a suspension rod (1) connected to a wall top, a main keel (3) connected to the suspension rod (1) via a hanging member (2), and a secondary keel (4) connected to the keel, characterized in that: The anti-crack plate (5) is installed on the secondary keel (4), and the side surfaces of the secondary keel (4) and the anti-crack plate (5) are provided with an upper slide rail (402) and a lower slide rail (401) extending in the length direction and distributed up and down in the height direction; It also includes sliding components, which are arranged on both sides of the anti-crack plate (5) in a direction perpendicular to the slide rail, and the sliding components are respectively slidably matched with the upper slide rail (402) and the lower slide rail (401) and are rotationally connected to the anti-crack plate (5); The anti-crack plate (5) rotates relative to the sliding assembly so that the anti-crack plate (5) is transformed between a horizontal state and an inclined state; The sliding assembly comprises a first sliding assembly cooperating with the lower sliding rail (401) and a second sliding assembly cooperating with the upper sliding rail (402), wherein the second sliding assembly rotates relative to the secondary keel (4) to change the inclination angle of the anti-crack plate (5); The second sliding assembly comprises a second rotating shaft (8) fixedly connected to the anti-crack plate (5), and slide plates (9) are provided at both ends of the second rotating shaft (8) on the outside of the anti-crack plate (5), and a second sliding member (10) cooperating with the upper slide rail (402) is hingedly provided on the slide plate (9); The first sliding assembly comprises a first rotating shaft (6) connected to the anti-crack plate (5), and both ends of the first rotating shaft (6) are rotatably connected to a first sliding member (7) cooperating with the lower sliding rail (401) outside the anti-crack plate (5), and the anti-crack plate (5) rotates relative to the first rotating shaft (6) or the first sliding member (7).

2. The anti-crack reinforced ceiling structure according to claim 1, characterized in that: The width of the upper slide rail (402) is smaller than the width of the lower slide rail (401), and the slide plate (9) is located outside the upper slide rail (402).

3. The anti-crack reinforced ceiling structure according to claim 1, characterized in that: When the anti-crack plate (5) is horizontal, the A surface (901) at the bottom of the slide plate (9) contacts the surface of the lower slide rail (401).

4. The anti-crack reinforced ceiling structure according to claim 3, characterized in that: The slide plate (9) is hinged to the second rotating shaft (8).

5. The anti-crack reinforced ceiling structure according to claim 4, characterized in that: When the anti-crack plate (5) rotates from a horizontal state to an inclined state, the B surface (902) of the side surface of the slide plate (9) that is connected to the A surface (901) moves to contact the surface of the lower slide rail (401).

6. A crack-resistant reinforced ceiling structure according to any one of claims 2 to 5, characterized in that: A limiting plate (4011) is provided at the edge of the lower sliding rail (401), and the limiting plate (4011) is close to the surface of the anti-crack plate (5) and in contact with the anti-crack plate (5).

7. The anti-crack reinforced ceiling structure according to claim 6, characterized in that: The secondary keel (4) is a mirror-symmetrical structure, the secondary keel (4) comprises an inverted triangle mounting portion (403) arranged at the top, the main keel (3) is provided with a mounting hole (301) adapted to the mounting portion (403), the mounting portion (403) cooperates with the mounting hole (301) so that the secondary keel (4) is plugged onto the main keel (3).

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