Indoor suspended ceiling structure of large building

Abstract

The invention relates to the technical field of ceiling structures, in particular to an indoor ceiling structure of a large building. Comprising a plurality of keel frames, each keel frame is composed of two main keels distributed front and back, each main keel is provided with a pair of hanging pieces, the lower ends of the main keels are jointly provided with a plurality of auxiliary keels, the main keels are provided with clamping jaws matched with the auxiliary keels in a one-to-one correspondence and clamping mode, the main keels are provided with fastening mechanisms, and a connecting mechanism is arranged between every two adjacent keel frames. Through the synergistic effect of the fastening mechanism and the connecting mechanism, the ceiling structure keeps extremely high stability under the normal load, graded unloading can be achieved through the preset breaking point when the ceiling is overloaded, and the problem of systematic failure caused by insufficient joint strength or sudden breaking of a traditional ceiling is fundamentally solved.

Description

Technical Field

[0001] This invention relates to the field of ceiling structure technology, and in particular to an interior ceiling structure for large buildings. Background Technology

[0002] The interior ceiling structure of large buildings mainly consists of a main keel that bears the main load, a secondary keel for fixing decorative panels, a hanger connecting the main keel to the building ceiling, a bracket for connecting the main and secondary keels, and a bracket for fixing the hanger to the main keel. The traditional installation method is to suspend the main keel below the building ceiling with the hanger, then use the bracket to vertically and crosswise fix the secondary keel below the main keel to form a grid frame, and finally install the decorative panels under the frame.

[0003] However, the following problems exist in the current installation of suspended ceiling structures: In existing technologies, the main keel and secondary keel are generally fixed by direct bolt connection or simple hooks. This connection structure has a clear strength bottleneck and the stress state is uncontrollable. The root cause is that the connection node only provides basic constraints and lacks dynamic load-bearing capacity optimization. When the continuous vibration generated by the long-term operation of the equipment inside the building is transmitted to the connection node, it will cause the bolt preload to decrease or the hook elastic deformation to occur, resulting in connection gaps that gradually widen. Eventually, under normal loads, the connection will loosen or even disengage, causing local instability of the suspended ceiling. Furthermore, since the traditional connection node adopts a purely rigid design concept, its failure mode has typical brittle characteristics. When the suspended ceiling is suddenly overloaded due to pipe leakage and water accumulation, abnormal equipment loading, or accidental impact, the internal stress of the node will rise sharply and exceed the material yield limit. However, due to the lack of a preset safety release mechanism, the stress cannot be relieved in a controllable way, which will eventually lead to unpredictable sudden fracture of the node at the weakest point. This random failure will immediately change the load transmission path, triggering the cascading failure of adjacent nodes, and ultimately causing the local damage to rapidly expand into a collapse of the entire structure.

[0004] Therefore, the problems of the connection structure between the main keel and the secondary keel being prone to loosening and instability under long-term vibration, and the lack of a safe release mechanism during sudden overload leading to the risk of chain collapse, are technical problems that need to be solved by those skilled in the art. Summary of the Invention

[0005] In view of the above problems, the present invention provides an interior ceiling structure for large buildings to solve the aforementioned technical problems.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an interior ceiling structure for a large building, comprising multiple sets of keel frames, each set of keel frames consisting of two main keels distributed front and rear, a pair of hanging members on the main keel, multiple secondary keels at the lower end of the main keel, claws on the main keel that correspond to and engage with the secondary keels, a fastening mechanism on the main keel, and a connecting mechanism between adjacent keel frames.

[0007] The fastening mechanism includes connecting rods that are mounted on the main keel and correspond one-to-one with the claws. The connecting rods can be movably passed through the claws and the main keel and detachably connected to the secondary keel. A fracture groove is provided on the connecting rod. The main keel is provided with extrusion components that correspond one-to-one with the connecting rods. Each extrusion component consists of two extrusion plates. The extrusion plates are slidably mounted on the corresponding main keel. Two limiting blocks are provided on the opposite surfaces of the two extrusion plates. A linkage part is provided between the extrusion plates and the connecting rods.

[0008] The connecting mechanism includes a fixing seat. The inner cavity of the end of the main keel and the secondary keel is provided with an L-shaped fixing seat. A pair of fracture pins can be detachably installed between two adjacent fixing seats. The fracture pins are provided with fracture grooves.

[0009] The connecting rod drives the limiting block and the extrusion plate to constrain the secondary keel through the linkage; when overloaded, the connecting rod breaks at one fracture groove to release the constraint, and the fracture pin breaks at the second fracture groove to release the connection between the keel frames.

[0010] As a preferred embodiment, the linkage includes a drive seat rotatably mounted on the upper end of the connecting rod, and two pressing plates in the same group are fixedly mounted on opposite sides. The two fixed plates are symmetrically arranged on both sides of the corresponding drive seat. An inclined groove is opened on the fixed plate, and a guide post that slides through the corresponding inclined groove is fixedly mounted on the drive seat.

[0011] As a preferred embodiment, the main keel has an inverted U-shaped structure, the secondary keel has a concave structure, and the claw has an inverted concave structure. The two vertical sections of the claw are distributed on the front and rear sides of the corresponding main keel. The vertical sections of the claw have an inverted T-shaped structure and are engaged with the secondary keel. The lower end of the secondary keel is fixedly installed with a plate.

[0012] As a preferred embodiment, the fracture pin is provided with two sets of planar components, which are symmetrically arranged on both sides of the corresponding fracture groove. Each set of planar components consists of a pair of wrench planes symmetrically opened on the side wall of the fracture pin.

[0013] As a preferred option, the inclined slots on the two left and right opposite fixing plates in the same group are combined to form a figure-eight structure, and a pair of compression springs are fixedly installed between the fixing seat and the corresponding main keel.

[0014] As a preferred embodiment, both ends of the fracture pin are threaded segments, and the two threaded segments of the fracture pin respectively move through the symmetrical fixed seats and are then threadedly connected to nuts.

[0015] As a preferred embodiment, the lifting component includes a lifting rod, with a connecting frame fixedly installed at the lower end of the lifting rod, and the connecting frame is fixedly connected to the main keel.

[0016] As a preferred embodiment, the lower ends of the connecting rods are all threaded sections, and the lower ends of the connecting rods are threadedly connected to the secondary keel.

[0017] As a preferred embodiment, a pair of wrench planes are symmetrically provided on the side wall of the connecting rod, located below the fracture groove.

[0018] The above-mentioned one or more technical solutions in the embodiments of the present invention have at least one of the following technical effects: First, the present invention enables the ceiling structure to maintain extremely high stability under normal load through the synergistic effect of the fastening mechanism and the connecting mechanism, and can achieve graded unloading through the preset fracture point when overloaded, fundamentally solving the problem of systemic failure caused by insufficient node strength or sudden fracture of traditional ceilings.

[0019] Second, the multi-constraint mechanism formed by the linkage part driving the extrusion plate and the limiting block of the present invention significantly enhances the vibration resistance and deformation resistance of the area where the claw and the secondary keel are engaged, effectively overcoming the technical defect of traditional connections that are prone to loosening and disengagement under long-term vibration.

[0020] Third, this invention achieves an orderly destruction process from the release of internal fastenings to the release of connections between keel frames through the sequential fracture mechanism of fracture groove one and fracture groove two. This transforms the random brittle fracture of traditional suspended ceilings into controllable regional isolation, thus solving the risk of chain collapse during sudden overload.

[0021] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0024] Figure 2 for Figure 1 A schematic diagram of the second-perspective structure.

[0025] Figure 3 This is a schematic diagram of a single keel frame according to the present invention.

[0026] Figure 4 for Figure 3 Enlarged view of the structure at point A in the image.

[0027] Figure 5 for Figure 3 Enlarged view of the structure at point B in the middle.

[0028] Figure 6 This is a schematic diagram of the connecting rod after it breaks according to the present invention.

[0029] Figure 7 This is a partial structural cross-sectional view of the fastening mechanism of the present invention.

[0030] Figure 8 This is a schematic diagram of the connection mechanism of the present invention.

[0031] Reference numerals: 10. Main keel; 11. Hanger; 110. Hanger rod; 111. Connecting frame; 12. Secondary keel; 13. Plate; 14. Claw; 2. Fastening mechanism; 20. Connecting rod; 200. Fracture groove one; 201. Wrench plane one; 21. Extrusion plate; 22. Limiting block; 4. Linkage part; 40. Drive seat; 41. Fixing plate; 42. Inclined groove; 43. Guide column; 44. Compression spring; 3. Connecting mechanism; 30. Fixing seat; 31. Fracture pin; 310. Fracture groove two; 311. Wrench plane two; 32. Nut. Detailed Implementation

[0032] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0033] like Figure 1 and Figure 2 As shown, an interior ceiling structure for a large building includes multiple sets of keel frames. Each set of keel frames consists of two main keels 10 arranged in a U-shape, with a pair of hangers 11 installed on each main keel 10. Multiple concave secondary keels 12 are provided at the lower ends of the two main keels 10. A board 13 is fixedly installed at the lower ends of the secondary keels 12. Claws 14 corresponding to the secondary keels 12 are fixedly installed on the main keels 10 and are engaged with the secondary keels 12. A fastening mechanism 2 is provided on the main keel 10, and a connecting mechanism 3 is provided between two adjacent keel frames.

[0034] like Figure 2 , Figure 3 and Figure 4As shown, the fastening mechanism 2 includes a connecting rod 20 mounted on the main keel 10 and corresponding to the claw 14. The connecting rod 20 passes through the claw 14 and the main keel 10 and is detachably connected to the secondary keel 12. A fracture groove 200 is provided on the connecting rod 20. The main keel 10 is provided with a pressing assembly corresponding to the connecting rod 20. Each pressing assembly consists of two pressing plates 21 that are symmetrical about the connecting rod 20. The pressing plates 21 are slidably mounted on the corresponding main keel 10. Two limiting blocks 22 that are symmetrical about the front and back of the main keel 10 are fixedly installed on the opposite surfaces of the two pressing plates 21. A linkage part 4 is provided between the pressing plate 21 and the connecting rod 20.

[0035] like Figure 2 , Figure 3 and Figure 5 As shown, the connecting mechanism 3 includes a fixed seat 30. The inner cavities of the ends of the main keel 10 and the secondary keel 12 are fixedly installed with a fixed seat 30 in an L-shape. A pair of fracture pins 31 are detachably installed between two adjacent fixed seats 30. A fracture groove 310 is provided on the fracture pin 31.

[0036] like Figure 3 and Figure 4 As shown, the claw 14 has an inverted concave structure, and the two vertical sections of the claw 14 are distributed on the front and rear sides of the corresponding main keel 10. The vertical sections of the claw 14 have an inverted T-shaped structure and are engaged with the secondary keel 12.

[0037] like Figure 1 , Figure 2 and Figure 3 As shown, the lifting component 11 includes a lifting rod 110, and a connecting frame 111 is fixedly installed at the lower end of the lifting rod 110. The connecting frame 111 is fixedly connected to the main keel 10.

[0038] like Figures 1 to 5 As shown, during the actual work, a hole is drilled at the corresponding position on the top of the wall using an external electric hammer. After cleaning the hole, the external expansion bolt is fully driven into the hole. Then, the upper end of the hanger 110 is fixed to the expansion bolt, and the connecting bracket 111 is fixedly installed at the lower end of the hanger 110. Then, the main keel 10 is fixedly installed on the corresponding connecting bracket 111, and the secondary keel 12 is installed below the main keel 10. The inverted T-shaped section of the vertical section of the claw 14 is inserted into the secondary keel 12 to fix the secondary keel 12 below the main keel 10.

[0039] Then, the lower end of the connecting rod 20 is fixedly connected to the secondary keel 12. At the same time, the linkage part 4 drives the corresponding pair of extrusion plates 21 to move closer to each other to extrude the secondary keel 12. Simultaneously, the limiting block 22 is moved to the top of the secondary keel 12. At this time, the limiting block 22 acts as a rigid support point, effectively suppressing the upward warping tendency of the secondary keel 12 due to the load in the area where the claw 14 engages. The continuous positive pressure applied to the side wall of the secondary keel 12 by the extrusion plate 21 greatly increases the static friction between the secondary keel 12 and the claw 14, thereby forming a multi-constraint mechanism to limit the deformation of the claw 14 part of the secondary keel 12, thereby improving the strength of the engagement between the secondary keel 12 and the claw 14, and further improving the strength through the extrusion of the extrusion plate 21.

[0040] Then install the next set of keel frames. Install a pair of break pins 31 between the adjacent secondary keels 12 at the front and back and the two adjacent main keels 10 on the left and right, so that multiple sets of keel frames are connected into a whole through the break pins 31, thereby improving the overall strength. Finally, fix the plate 13 to the lower end of the secondary keel 12.

[0041] When overload occurs due to factors such as maintenance personnel stepping on heavy equipment, concentrated loads caused by fire sprinkler leaks, water accumulation caused by pipe ruptures, metal fatigue, or corrosion in humid environments, the fracture pin 31 and connecting rod 20 on the force transmission path will break due to overload, avoiding chain failures and overall collapse. This transforms the failure mode of the connection node from uncontrollable random brittle fracture to a predictable and controllable safe release mechanism, thereby instantly interrupting the dangerous load transmission path and effectively releasing the accumulated destructive energy by sacrificing its own local components. This not only prevents irreversible plastic deformation or tearing of core load-bearing components such as the main and secondary keels 12, but also fundamentally prevents stress redistribution and chain collapse accidents caused by random failure of a single node.

[0042] like Figure 3 , Figure 4 and Figure 6 As shown, the linkage part 4 includes a drive seat 40 rotatably mounted on the upper end of the connecting rod 20. The opposing surfaces of the two extrusion plates 21 in the same group are fixedly mounted with fixing plates 41. The two fixing plates 41 are symmetrically arranged on both sides of the corresponding drive seat 40. The fixing plates 41 are provided with inclined grooves 42. The drive seat 40 is fixedly mounted with guide posts 43 that slide through the corresponding inclined grooves 42.

[0043] like Figure 4 and Figure 6 As shown, the inclined grooves 42 on the two left and right opposite fixing plates 41 of the same group are combined to form a figure-eight structure, and a pair of compression springs 44 are fixedly installed between the fixing seat 30 and the corresponding main keel 10.

[0044] like Figure 4and Figure 7 As shown, a pair of wrench planes 201 are symmetrically provided on the side wall of the connecting rod 20, located below the fracture groove 200.

[0045] like Figure 4 and Figure 7 As shown, the lower ends of the connecting rods 20 are all threaded sections, and the lower ends of the connecting rods 20 are threadedly connected to the secondary keel 12.

[0046] like Figures 3 to 7 As shown, during actual operation, the connecting rod 20 is rotated by the cooperation of the wrench and the wrench plane 201, causing the threaded section at the lower end of the connecting rod 20 to move down and connect with the corresponding secondary keel 12. As the connecting rod 20 moves down, it drives the drive seat 40 to move down and compress the compression spring 44. The drive seat 40, through the cooperation of the guide post 43 and the inclined groove 42, drives the two corresponding extrusion plates 21 to move closer to each other to extrude the secondary keel 12. At the same time, it drives the limiting block 22 to move above the corresponding secondary keel 12. When the secondary keel 12 is under load but not overloaded, the limiting block 22 and the extrusion plate 21 will limit the deformation of the secondary keel 12, thereby ensuring the structural strength of the secondary keel 12, and thus improving the cooperation strength between the secondary keel 12 and the claw 14, ensuring the stability of the structure.

[0047] When the secondary keel 12 is overloaded, the fracture groove 200 of the connecting rod 20 will break. At this time, the drive seat 40 moves upward under the action of the compression spring 44. The drive seat 40, through the cooperation of the guide post 43 and the inclined groove 42, drives the two corresponding compression plates 21 to move away from each other through the fixing plate 41. The limit block 22 also disengages from the secondary keel 12 to release the reinforcement of the secondary keel 12. At this time, the locking area of ​​the secondary keel 12 loses rigid constraint, and its inherent elasticity is released, allowing the secondary keel 12 to undergo controllable deformation and displacement under overload conditions. On the one hand, this quickly reduces the stress concentration at the connection point, and on the other hand, it creates the necessary conditions for the disengagement and separation of the claw 14 and the secondary keel 12. The secondary keel 12 deforms under overload conditions, causing the locking cooperation between the claw 14 and the secondary keel 12 to fail, thereby releasing the connection between the secondary keel 12 and the main keel 10, avoiding overall chain damage, and facilitating subsequent maintenance and repair.

[0048] like Figure 3 , Figure 5 and Figure 8 As shown, both ends of the fracture pin 31 are threaded sections. The two threaded sections of the fracture pin 31 are respectively movably passed through the symmetrical fixed seat 30 and then threadedly connected to the nut 32.

[0049] like Figure 5 and Figure 8As shown, the fracture pin 31 is provided with two sets of planar components. The two sets of planar components are symmetrically arranged on both sides of the corresponding fracture groove 310. Each set of planar components consists of a pair of wrench planes 311 symmetrically opened on the side wall of the fracture pin 31.

[0050] like Figure 3 , Figure 5 and Figure 8 As shown, during actual operation, one of the external wrenches is engaged with the wrench plane 311 at one end of the broken pin 31 to prevent the broken pin 31 from rotating under force. Then, the nut 32 is fixed to this section of the broken pin 31 using another wrench. The nut 32 at the other end is installed in the same way, thereby combining multiple sets of keel frames into a whole to jointly bear and share the load and impact sway. When the load exceeds the range, the broken pin 31 at the keel frame with the maximum load will break and disconnect from the adjacent keel frame.

[0051] Furthermore, it is important to note that, to ensure the accuracy and long-term reliability of the connecting rod 20 and the break pin 31, they must be made of high-strength, high-carbon steel or alloy spring steel with good brittleness. A rigorous heat treatment process is required to achieve a stable shear strength limit that meets predetermined values. Simultaneously, their geometry must be precisely designed, and the root radius of the first break groove 200 and the second break groove 310 must be optimized through finite element analysis to precisely control the stress concentration factor, thereby firmly locking the fracture location at the predetermined cross-section. In addition, the pin surface must undergo anti-corrosion treatment such as galvanizing or Dacromet coating to withstand the long-term challenges of the indoor environment. Only through the comprehensive constraints of materials science, mechanical design, and precision manufacturing can the performance of the safety pin remain stable and undiminished during the decades of normal use of the suspended ceiling, and only be precisely and decisively sheared in the event of a real overload.

[0052] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0053] Furthermore, the terms "first," "second," "number one," and "number two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "number one," or "number two" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0054] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," "installed," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0055] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. An interior ceiling structure for a large building, comprising multiple sets of keel frames, each set of keel frames consisting of two main keels distributed front and rear, each main keel having a pair of hanging members, and multiple secondary keels shared at the lower end of the main keels, the main keels having clips that engage with the secondary keels one-to-one, characterized in that: The main keel is provided with a fastening mechanism, and the adjacent two keel frames are provided with a connecting mechanism; The fastening mechanism comprises connecting rods provided on the main keel and corresponding to the claws, the connecting rods are movably penetrated through the claws, and the main keel is detachably connected with the secondary keel after the connecting rods; a fracture groove one is formed on the connecting rod; the main keel is provided with extrusion assemblies corresponding to the connecting rods; each set of extrusion assemblies is composed of two extrusion plates; the extrusion plates are slidably sleeved on the corresponding main keel; two limiting blocks are arranged on the opposite surfaces of the two extrusion plates; and a linkage part is arranged between the extrusion plate and the connecting rod. The connecting mechanism comprises a fixed seat, the end cavities of the main keel and the secondary keel are provided with L-shaped fixed seats, and a pair of fracture pins are detachably installed between the adjacent two fixed seats; and a fracture groove two is formed on the fracture pin. The connecting rod drives the limiting blocks and the extrusion plates to constrain the secondary keel through the linkage part; when overloaded, the connecting rod is fractured at the fracture groove one to release the constraint, and the fracture pin is fractured at the fracture groove two to release the connection between the keel frames.

2. A suspended ceiling structure for large buildings according to claim 1, characterized in that: The linkage part comprises a driving seat rotatably installed on the upper end of the connecting rod; the opposite surfaces of the two extrusion plates (21) in the same group are fixedly provided with fixed plates; the two fixed plates are symmetrically arranged on the two sides of the corresponding driving seat; a slant groove is formed on the fixed plate; and a guide column is fixedly installed on the driving seat and slidably penetrates through the corresponding slant groove.

3. A suspended ceiling structure for large buildings according to claim 1, characterized in that: The main keel has a shape of a Chinese character 'fang', the secondary keel has a concave shape, and the claw has an inverted concave shape; the two vertical sections of the claw are arranged on the front and back sides of the corresponding main keel; the vertical section of the claw has an inverted T-shaped structure and is in clamping cooperation with the secondary keel; and the lower end of the secondary keel is fixedly installed with a plate.

4. A suspended ceiling structure for large buildings according to claim 1, characterized in that: The fracture pin is provided with two groups of plane assemblies; the two groups of plane assemblies are symmetrically arranged on the two sides of the corresponding fracture groove two; each group of plane assemblies is composed of a pair of wrench planes two symmetrically formed on the side wall of the fracture pin.

5. A suspended ceiling structure for large buildings according to claim 2, characterized in that: The slant grooves formed on the two left and right opposite fixed plates in the same group are combined to form an eight-character-shaped structure; a pair of compression springs are fixedly installed between the fixed seat and the corresponding main keel.

6. A suspended ceiling structure for large buildings according to claim 1, characterized in that: Both ends of the fracture pin are threaded sections; and the two threaded sections of the fracture pin are movably penetrated through the symmetric fixed seats and are threadedly connected with nuts.

7. A suspended ceiling structure for large buildings according to claim 1, characterized in that: The hanging piece comprises a hanging rod, and the lower end of the hanging rod is fixedly installed with a connecting frame; and the connecting frame is fixedly connected with the main keel.

8. A suspended ceiling structure for large buildings according to claim 1, characterized in that: The lower end of the connecting rod is a threaded section; and the lower end of the connecting rod is threadedly connected with the secondary keel.

9. A suspended ceiling structure for large buildings according to claim 1, characterized in that: A pair of wrench planes one are symmetrically formed on the side wall of the connecting rod below the fracture groove.

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