An assembled ceiling with a shock absorption device and its installation method

Abstract

The present invention relates to the technical field of assembled ceilings, and in particular to an assembled ceiling with a shock-absorbing device and an installation method thereof. A shock-absorbing device is provided between the keel of the assembled ceiling with a shock-absorbing device and the top fixing piece. The shock-absorbing device includes a housing and a shock-absorbing spring; the shock-absorbing spring is arranged in the housing, the working direction of the shock-absorbing spring is vertical, and one end of the working direction of the shock-absorbing spring is connected to the housing, and the other end is connected to the keel through a connecting rod; the housing includes a fixed part and a movable part, and the housing further includes an adjusting structure for adjusting the distance between the fixed part and the movable part. In this application, by adjusting the distance between the movable part and the fixed part of the housing, on the one hand, the height of the housing itself can be adjusted, so that the overall height of the shock-absorbing device is changed to adapt to ceilings with different installation heights; on the other hand, the telescopic range of the shock-absorbing spring in the housing can be adjusted.

Description

Technical Field

[0001] The present invention relates to the technical field of assembled ceilings, and in particular to an assembled ceiling with a shock-absorbing device and an installation method thereof. Background Art

[0002] The ceiling system is an important part of non-structural components in a building. The following problems exist: ① Non-structural components are generally suspended at a high place in a building. When the building is affected by an earthquake, the external force does not directly act on the non-structural components, but is transmitted to the non-structural components through the amplified action generated by the reaction of the main structure; ② Compared with the main structure, the mass and stiffness of non-structural components are often much smaller, which easily makes their natural frequencies close to those of the main structure, resulting in resonance and causing the dynamic response of non-structural components to be particularly strong; ③ The coupled system composed of the main structure and non-structural components is a non-classical damping system, and the damping ratio of non-structural components is much smaller than that of the main structure, which cannot weaken the resonance effect; ④ Non-structural components may be supported at a single point or at multiple points. When supported at multiple points, the mechanism actions of each support point may be asynchronous, which may generate a torsional effect. Therefore, it is necessary to set up an assembled ceiling with a shock-absorbing device to solve or reduce the functional obstacles of the ceiling system when the building is affected by an earthquake, avoid the loss of ceiling functions, and ensure the operation of the ceiling system.

[0003] The patent document with the publication number of CN112095897A discloses such an assembled stepped ceiling with a shock-absorbing effect, including a hanging column, a main keel, and a transverse keel. The hanging column, the main keel, and the transverse keel are all columnar structures. The hanging column is located above the main keel, and the transverse keel is located below the main keel; a plurality of side mounting plates are arranged on the peripheral side surface of the main keel. A shock-absorbing column is arranged on the upper surface of the side mounting plate. A shock-absorbing spring is arranged inside the shock-absorbing column. Spring positioning plates are fixedly connected to both the upper and lower ends of the shock-absorbing spring. A second threaded hole is arranged on the upper surface of the side mounting plate. The spring positioning plate at the lower end of the shock-absorbing spring is in threaded cooperation with the second threaded hole, and the shock-absorbing spring arranged inside the shock-absorbing column provides a longitudinal shock-absorbing effect for the whole ceiling.

[0004] In this structure, the shock-absorbing spring is fixedly installed inside the shock-absorbing column and cannot be adjusted according to requirements: for example, the height of the shock absorber cannot be adjusted for ceilings with different installation heights, and the elastic force of the shock absorber spring cannot be adjusted for ceiling boards with different hanging weights, so the shock-absorbing effect cannot be adjusted; in addition, it is not convenient to disassemble and replace the new spring after the spring loses its elasticity after long-term use. Summary of the Invention

[0005] The present invention aims to solve the above problems and provides an assembled ceiling with a shock-absorbing device that can be adjusted as needed and an installation method thereof.

[0006] The technical solution for the present invention to solve the problem is to first provide an assembled ceiling with a shock absorption device, including a ceiling board and a keel for installing the ceiling board to the top fixing member. A shock absorption device is provided between the keel and the top fixing member. The shock absorption device includes a housing and a shock absorption spring; the housing is connected to the top fixing member; the shock absorption spring is arranged inside the housing, the working direction of the shock absorption spring is vertical, and one end of the shock absorption spring in the working direction is connected to the housing, and the other end is connected to the keel through a connecting rod. The housing is provided with a through hole for the connecting rod to extend out, and the inner diameter of the through hole is smaller than the outer diameter of the shock absorption spring; the housing includes a fixed part and a movable part, the direction from the movable part to the fixed part is parallel to the working direction of the shock absorption spring, and the housing further includes an adjustment structure for adjusting the distance between the fixed part and the movable part to adjust the telescopic range of the shock absorption spring inside the housing.

[0007] As a preference of the present invention, the connecting rod includes a shock absorption section located inside the housing and a connecting section located outside the housing; the connecting section is connected to the keel; the shock absorption spring is sleeved on the shock absorption section, and one end of the shock absorption spring in the working direction is connected to the inner bottom of the housing, and the other end is connected to the shock absorption section.

[0008] As a preference of the present invention, a flexible gasket is provided between the shock absorption spring and the housing.

[0009] As a preference of the present invention, the adjustment structure includes a fixed block connected to the fixed part and a movable block connected to the movable part; the fixed block is provided with a vertical strip-shaped groove in the length direction and several locking grooves arranged in sequence along the length direction of the strip-shaped groove. The locking grooves are all communicated with the strip-shaped groove, and the length direction of the locking groove is not parallel to the length direction of the strip-shaped groove; the movable block is provided with a convex block that can be inserted into the strip-shaped groove and the locking groove to slide.

[0010] As a preference of the present invention, the fixed block is a cylindrical body with a vertical axial direction, and the locking groove is an arc groove with a radian consistent with the radian of the circular ring in the radial section of the cylindrical body.

[0011] As a preference of the present invention, the fixed block is further provided with a limiting groove communicated with the locking groove. The limiting groove includes a communication end communicated with the locking groove and a stop end opposite to the communication end. The stop end is closer to the movable part than the communication end.

[0012] As a preference of the present invention, an insertion opening for the convex block to enter and exit is provided at one end of the strip-shaped groove close to the movable part.

[0013] Preferably, a limiting block for restricting the elastic expansion distance of the shock-absorbing spring is provided on the connecting section; when the limiting block abuts against the outer bottom surface of the housing, there is a gap between the end of the shock-absorbing section and the inner top surface of the housing.

[0014] Preferably, the connecting rod is provided with an external thread, and the limiting block is a nut threadedly connected to the external thread.

[0015] Another object of the present invention is to provide an installation method for an assembled ceiling with a shock-absorbing device, including the following steps:

[0016] S1. Connect the housing to the top fixing member, and connect the shock-absorbing spring to the keel through the connecting rod.

[0017] S2. Install the ceiling board on the keel.

[0018] Advantages of the present invention:

[0019] 1. A shock-absorbing device is added to the ceiling system in this application, improving the earthquake resistance of the ceiling.

[0020] 2. In this application, the shock-absorbing spring is installed in the housing, and a housing with adjustable height is provided. By adjusting the distance between the movable part and the fixed part of the housing, on the one hand, the height of the housing itself can be adjusted, so that the overall height of the shock-absorbing device changes to adapt to ceilings with different installation heights, enhancing the versatility of the shock-absorbing device; on the other hand, the telescopic range of the shock-absorbing spring in the housing can be adjusted. For example, the higher the housing height, the larger the elastic expansion distance that the shock-absorbing spring can perform in the housing, the larger the buffer stroke, the greater the elastic force generated, and the better the shock-absorbing effect. It can also be applied to heavier ceiling boards.

[0021] 3. In this application, the distance between the movable part and the fixed part is adjusted by the cooperation of the strip-shaped groove, the locking groove and the convex block. The adjustment and connection fixation can be achieved by the "slide and rotate" method of the convex block sliding along the strip-shaped groove and then sliding into the corresponding locking groove. The installation is convenient, meeting the characteristics of fast installation and disassembly of the assembled type.

[0022] 4. In this application, by providing a socket at the end of the strip-shaped groove, the fixed part and the movable part are detachable, so as to facilitate the replacement of shock-absorbing springs with different stiffnesses, further adapting to ceiling boards with different hanging weights. For example, when the weight of the ceiling board is too small to cause deformation of the existing shock-absorbing spring, it is difficult to play a shock-absorbing role. At this time, a shock-absorbing spring with lower stiffness can be replaced to adapt. In addition, it is also convenient to replace shock-absorbing springs with different effective numbers of coils to adjust the elastic force. For example, replace the shock-absorbing spring with fewer effective coils to reduce the height occupied by the spring coils and increase its total deformable degree; replace the shock-absorbing spring with more effective coils to avoid excessive deformation of a single spring coil exceeding the elastic limit and causing elastic failure.

[0023] 5. In this application, the shock-absorbing spring is sleeved on the connecting rod, and its lower end is connected to the inner bottom of the housing, and its upper end is connected to the connecting rod, so that the shock-absorbing spring is in a compressed state under the gravity of the keel and the ceiling board, improving the energy storage effect of the shock-absorbing spring. Moreover, compared with the method of connecting the upper end of the shock-absorbing spring to the inner top of the housing and the lower end to the connecting rod, it can avoid the elastic failure of the shock-absorbing spring due to long-term expansion. On this basis, the movement stroke of the shock-absorbing spring is restricted by the limit block, preventing the end of the shock-absorbing section from colliding with the inner top surface of the housing and causing vibration, and avoiding damage to the shock-absorbing device and the ceiling structure. Description of the Drawings

[0024] Figure 1 is a schematic structural diagram of an assembled ceiling with a shock-absorbing device;

[0025] Figure 2 is Figure 1 the enlarged view at A in

[0026] Figure 3 is a cross-sectional view of an assembled ceiling with a shock-absorbing device;

[0027] Figure 4 is a cross-sectional view of the shock-absorbing device in an assembled ceiling with a shock-absorbing device;

[0028] Figure 5 is the front view of the shock-absorbing device in an assembled ceiling with a shock-absorbing device;

[0029] Figure 6 is the structural diagram of the shock-absorbing device in an assembled ceiling with a shock-absorbing device;

[0030] Figure 7 is the structural explosion diagram of the shock-absorbing device in an assembled ceiling with a shock-absorbing device;

[0031] Figure 8 is the adjustment schematic diagram of the shock-absorbing device in an assembled ceiling with a shock-absorbing device;

[0032] Figure 9 is Figure 1 the enlarged view at B in

[0033] Figure 10 is the schematic structural diagram of another implementation manner of the housing in an assembled ceiling with a shock-absorbing device;

[0034] Figure 11 is the schematic structural diagram of another installation manner of an assembled ceiling with a shock-absorbing device;

[0035] In the figure: ceiling fixing member 1, keel 2, ceiling board 3, shock absorption device 4, housing 41, fixing portion 411, movable portion 412, fixing block 413, movable block 414, connecting rod 42, connecting section 421, shock absorption section 422, shock absorption spring 43, limiting block 44, strip-shaped groove 51, locking groove 52, limiting groove 53, convex block 54. Specific Embodiment

[0036] The following are specific embodiments of the present invention. In combination with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

[0037] Embodiment 1

[0038] An assembled ceiling with a shock absorption device, as Figure 1 shown, is first basically the same as a traditional assembled ceiling, including a ceiling board 3 and a keel 2 for installing the ceiling board 3 to the ceiling fixing member 1; secondly, in this application, a shock absorption device 4 is added between the ceiling fixing member 1 and the keel 2 to reduce the transmission of the shock force received by the ceiling fixing member 1 to the ceiling board 3.

[0039] Among them, the ceiling fixing member 1 Figure 1 is not drawn in the figure. Generally, it refers to the ceiling wall or the steel beam at the top in the room, which is the installation foundation of the entire ceiling structure. In this embodiment, as Figure 3 shown, the ceiling fixing member 1 is the ceiling wall.

[0040] The keel 2 is the upper keel layer part of the grid-shaped keel frame. The grid-shaped keel frame refers to a grid-shaped structure composed of two keel layers in the horizontal and vertical directions, mainly serving as the installation foundation for the subsequent ceiling board 3 and playing a role in leveling the ceiling board 3. When installing the grid-shaped keel frame, in accordance with Figure 1 the direction in the figure, first connect several keels 2 with the length direction being the left-right direction to the ceiling fixing member 1, and then connect several lower keels with the length direction being the front-back direction to the keel 2.

[0041] When installing the keel 2, a connecting device for connection and fixation and a shock absorption device 4 for shock absorption need to be respectively provided between the keel 2 and the ceiling fixing member 1, and as Figure 1 shown, on the same keel 2, it is preferably to arrange the connecting device and the shock absorption device 4 at intervals; among adjacent keels 2, the connecting device and the shock absorption device 4 are also arranged staggeredly. Generally, the structure of the keel 2 is not limited, and I-shaped keels, U-shaped keels, and square tube keels can all be used. In this embodiment, for the convenience of subsequent installation of the lower keel and shock absorption, as Figure 2 shown, the keel 2 is selected as a U-shaped keel, including a top plate and side plates respectively arranged at both ends of the top plate, and the top plate is provided with through holes.

[0042] The connecting device is an elongated expansion bolt. When in use, the tail of the expansion bolt passes through the through hole of the top plate of the keel 2 from bottom to top. The head of the expansion bolt abuts against the inner top surface of the keel 2, and the tail of the expansion bolt is driven into the top fixing piece 1, thus completing the connection between the keel 2 and the top fixing piece 1. In addition, generally, wood-plastic blocks are provided on the side walls on the left and right sides, and the two ends of the keel 2 are respectively lapped on the wood-plastic blocks.

[0043] The shock-absorbing device is as Figure 4 , 5 As shown in 6 and 7, the shock-absorbing device 4 first includes a housing 41 and a shock-absorbing spring 43. The housing 41 includes a fixed part 411 and a movable part 412. The distance between the fixed part 411 and the movable part 412 is the inner height of the housing 41. Therefore, the fixed part 411 and the movable part 412 can actually be understood as the top and bottom of the housing 41, but it is not limited which one of the fixed part 411 belongs to the top or bottom, and which one of the movable part 412 belongs to the bottom or top. In this embodiment, the fixed part 411 is the bottom of the housing 41, and the movable part 412 is the top of the housing. The housing 41 is connected to the top fixing piece 1, and the specific connection method is not limited. It can be that the bottom, or / and the top, or / and the side of the housing 41 are connected to the top fixing piece 1. In this embodiment, considering the connection convenience and the technical effect achieved by the adjustable movable part 412 to be described later, the top of the housing 41, that is, the movable part 412 in this embodiment, is connected to the top fixing piece 1. The specific connection method is also not limited. In this embodiment, in cooperation with the above connecting device, the connection is also achieved by using an expansion bolt: that is, a hole is drilled in the movable part 412, and then the tail of the shorter expansion bolt passes through the through hole from bottom to top. The head of the expansion bolt abuts against the inner top surface of the movable part 412. Preferably, a nut gasket is added between the two. The tail of the expansion bolt is driven into the top fixing piece 1.

[0044] The main component of the shock-absorbing device 4, the shock-absorbing spring 43, is arranged in the housing 41 to play a role of dust protection through the housing 41. The working direction of the shock-absorbing spring 43 is the vertical direction, and one end of the working direction is connected to the housing 41, and the other end is connected to the keel 2. There are two possible connection methods here: One is that the upper end of the shock-absorbing spring 43 is connected to the inner top surface of the housing 41, that is, the movable part 412 in this embodiment, and the lower end is connected to the keel 2 through a connecting rod 42. The bottom of the housing 41, that is, the fixed part 411 in this embodiment, is provided with a through hole through which the connecting rod 42 can pass but does not allow the shock-absorbing spring 43 to escape from the housing 41, that is, the inner diameter of the through hole is larger than the outer diameter of the connecting rod 42 and smaller than the outer diameter of the shock-absorbing spring 43. In this connection method, under the action of the weights of the keel 2 and the ceiling board 3, the shock-absorbing spring 43 is in an elastic tensile state for a long time, and there may be a problem of elastic failure after long-term use. Therefore, it is less used.

[0045] The second connection method, that is, the connection method in this embodiment, is that the lower end of the shock-absorbing spring 43 is connected to the inner bottom of the shell 41, that is, the fixed part 411 in this embodiment, and the upper end is connected to the keel 2 through the connecting rod 42. Specifically, the fixing part 411 is still provided with a through hole whose inner diameter is larger than the outer diameter of the connecting rod 42 and smaller than the outer diameter of the shock-absorbing spring 43. One end of the connecting rod 42 is inserted into the shell 41 through the through hole, so that the connecting rod 42 includes a shock-absorbing section 422 located in the shell 41 and a connecting section 421 located outside the shell. The shock-absorbing spring 43 is sleeved on the shock-absorbing section 422, and the upper end of the shock-absorbing spring 43 is connected to the shock-absorbing section 422 and the lower end is connected to the fixed part 411; the connecting section 421 is connected to the keel 2. In this connection method, the shock-absorbing spring 43 is in a compressed state when not in use. Compared with the tension state, the shock-absorbing spring 43 is not easy to fail elastically. At the same time, in this connection mode, the shock absorbing section 422 can also serve as a guide structure for the working direction of the shock absorbing spring 43 to prevent the working direction of the shock absorbing spring 43 from being offset. It is worth noting that the shock absorbing section 422 and the connecting section 421 are not two fixed parts on the connecting rod 42. As the shock absorbing spring 43 expands and contracts, the length of the shock absorbing section 422 and the length of the connecting section 421 change accordingly.

[0046] In addition, since the shock absorbing spring 43 is mostly made of metal, there is working noise. In order to avoid noise when the shock absorbing spring 43 is compressed downward and abuts against the fixed part 411, a flexible gasket 431 is provided between the shock absorbing spring 43 and the fixed part 411. The flexible gasket 431 can be a rubber gasket. In order to avoid noise caused by the shock absorbing spring 43 expanding upward and abutting against the movable part 412, and to avoid the impact on the connection effect of the expansion bolt caused by the collision with the head of the expansion bolt, the connection section 421 is provided with a limit block 44 for limiting the elastic expansion distance of the shock absorbing spring 43; by controlling the installation position of the limit block 44 on the connection section 421, when the limit block 44 abuts against the outer bottom surface of the fixed bottom 411, there is a gap between the end of the shock absorbing section 422 and the movable top 412, thereby avoiding collision. The connection method between the limit block 44 and the connecting rod 42 is not limited, and can be a fixed connection, or as in the present embodiment, an external thread is provided on the connecting rod 42, and the limit block 44 is a nut threadedly connected to the external thread. The position of the limit block 44 in the connecting section 421 can be adjusted through the threaded connection to adapt to shells 41 of different heights.

[0047] In the above structure, the connection method between the shock-absorbing spring 43 and the shock-absorbing section 422 is not limited. In this embodiment, in cooperation with the connecting rod 42 with external threads described above, a stop block can be provided at the upper end of the shock-absorbing spring 43. The stop block can be the spring cover of the shock-absorbing spring 43. After the stop block is sleeved on the shock-absorbing section 422, a locking nut is screwed into the shock-absorbing section 422 and abuts against the stop block. This not only realizes the connection between the shock-absorbing spring 43 and the connecting rod 42, but also can adjust the installation position of the shock-absorbing spring 43 on the shock-absorbing section 422 by controlling the screwing distance of the locking nut, and adjust the deformable range of the shock-absorbing spring 43.

[0048] Based on the above structure, the shock-absorbing spring 43 is arranged in the housing 41. The housing 41 is connected to the top fixing member 1, and the shock-absorbing spring 43 is connected to the keel 2. The shock force of the top fixing member 1 is transmitted to the housing 41 and then to the keel 2 through the shock-absorbing spring 43. The shock-absorbing spring 43 can absorb the shock force through elastic expansion and contraction, that is, shock absorption is realized.

[0049] The shock-absorbing effect is related to the elastic force of the shock-absorbing spring 43 to a certain extent. The telescopic distance of the shock-absorbing spring 43 in the housing 41 is limited by the inner height of the housing 41. Therefore, the housing 41 can prevent the shock-absorbing spring 43 from expanding too far and exceeding the elastic limit and failing. In the prior art, the housing 41 is usually a fixed structure, that is, its inner height is fixed. In this application, in order to improve the applicable range of the shock-absorbing device 4, the housing 41 is set to have an adjustable inner height, that is, the housing 41 further includes an adjustment structure for adjusting the distance between the movable part 412 and the fixed part 411. When the inner height of the housing 41 is adjusted, the telescopic range of the shock-absorbing spring 43 in the housing 41 can be adjusted. For example Figure 8 As shown, when the housing 41 is adjusted from Figure 8 the left figure to the right figure, the upward expansion distance of the shock-absorbing spring 43 increases significantly. Within the elastic limit, the elastic force of the spring is related to its deformation amount. When the expansion distance increases and the deformation amount increases, the elastic force correspondingly increases, which can improve its shock-absorbing effect to a certain extent and adapt to heavier loads.

[0050] The specific structure of the adjustment structure is not limited, as long as it can make the movable part 412 move in the vertical direction and lock the relative distance between the movable part 412 and the fixed part 411 after the movement. In this embodiment, the adjustment structure includes a fixed block 413 vertically connected to the fixed part 411 and a movable block 414 vertically connected to the movable part 412; As Figure 5As shown, the fixed block 413 is provided with a strip-shaped groove 51 with a vertical length direction, and a number of locking grooves 52 arranged in sequence along the length direction of the strip-shaped groove 51. The locking grooves 52 are all communicated with the strip-shaped groove 51, and the length direction of the locking grooves 52 is not parallel to the length direction of the strip-shaped groove 51, preferably perpendicular; the movable block 414 is provided with a convex block 54 that can be inserted into the strip-shaped groove 51 and the locking groove 52 for sliding. During use, by controlling the convex block 54 to slide along the strip-shaped groove 51, the distance between the movable part 412 and the fixed part 411 can be adjusted. After adjusting to the ideal distance, control the convex block 54 to slide towards the nearby locking groove 52. After the convex block 54 is located in the locking groove 52, it can no longer slide vertically, which plays a role in height locking. In addition, since the convex block 54 may slide along the locking groove 52 under external force in the locking groove 52, affecting the connection stability, a limiting groove 53 communicated with the locking groove 52 is additionally provided on the fixed block 413 in this embodiment. The limiting groove 53 includes a communication end communicated with the locking groove 52 and a stop end opposite to the communication end. The stop end is closer to the movable part 412 than the communication end. In this embodiment, it is shown that the stop end is above the communication end. When the convex block 54 moves along the locking groove 52 into the limiting groove 53, due to the downward force on the fixed block 413 and the fixed part 411, the stop end will be driven to press on the convex block 54 to complete the locking. In addition, for the convenience of disassembly, an insertion port for the convex block 54 to insert is provided at one end of the strip-shaped groove 51 close to the movable part 412.

[0051] The structures of the fixed block 413 and the movable block 414 are not limited. For example, the fixed block 413 can be a frame body spliced by four plates, and the movable block 414 can be a square prism inserted into the frame body. However, in this way, since the convex block 54 needs to slide in the non-vertical locking groove 52, at least one surface between the fixed block 413 and the movable block 414 cannot be in contact with each other, resulting in insufficient connection strength. In this embodiment, the fixed block 413 is set as a cylindrical body with a vertical axial direction, and the locking groove 52 is an arc groove on a circular ring in the radial section of the cylindrical body; at this time, the movable block 414 can be a large cylindrical body sleeved outside the fixed block 413 with its inner wall fitting with the outer wall of the fixed block 413, or a small cylindrical body inserted into the fixed block 413 with its outer wall fitting with the inner wall of the fixed block 413. Preferably, it is a small cylindrical body, and the convex block 54 is arranged on the outer wall of the small cylindrical body, which is convenient for observing the working position of the adjustment structure. Under the setting of the cylindrical structure, the movable block 414 can make the convex block 54 slide into the locking groove 52 by rotating, and the fixed block 413 and the movable block 414 are always in contact, and the integrity and connection effect between the two are better. In addition, preferably, at least two strip-shaped grooves 51 are provided on the fixed block 413, and a number of strip-shaped grooves 51 are evenly arranged in a ring with the central axis of the fixed block 413 as the center, and the positions of the locking grooves 52 on a number of strip-shaped grooves 51 correspond to ensure the balance between the fixed block 413 and the movable block 414.

[0052] Based on this, when installing the shock absorbing device 4 after installing the connecting device, first separate the fixed block 413 and the movable block 414, then pass the expansion bolt through the movable part 412 for standby use, pass the connecting rod 42 through the fixed part 411, sleeve the shock absorbing spring 43 on the part of the connecting rod 42 located above the fixed part 411, and complete the adjustment and fixing of the shock absorbing spring 43, and thread the limit block 44 on the part of the connecting rod 42 located below the fixed part 411; then insert the protrusion 54 on the movable block 414 into the fixed block 413 along the socket of the strip groove 51, and after inserting to the ideal distance, rotate the movable block 414 so that the protrusion 54 slides into the locking groove 52, and then lift it up so that the protrusion 54 slides into the limit groove 53. Then drive the tail of the expansion bolt into the top fixing member 1. Finally, a nut is threadedly connected to the connecting section 421, and then the end of the connecting section 421 is passed through the through hole of the top plate of the keel 2 and then threadedly connected to another nut, and the two nuts are adjusted until the two nuts are respectively in contact with the two sides of the top plate of the keel 2.

[0053] After installing the keel 2, it is necessary to install the lower keel in the longitudinal direction on the keel 2. In order to facilitate the installation of the lower keel, the embodiment provides a plurality of anchors at the end edge of the side plate of the keel 2 along the longitudinal direction of the keel 2, such as Figure 2 and Figure 9 As shown, the anchor comprises a main body connected vertically to the side panels of the keel 2 and hooks respectively arranged at both ends of the main body, and a slot is formed between the hook and the side of the main body. In coordination therewith, the lower keel is a structure in which folded wings are added to the end edges of the two side panels of the traditional U-shaped keel, and the folded wings and the side panels form a hook-shaped structure. When in use, the two hook-shaped structures of the lower keel are respectively inserted between the two anchors, and the folded wings of the hook-shaped structure are inserted into the slot of the anchor, and the installation of the lower keel is completed.

[0054] Finally, the ceiling board 3 is installed on the lower keel, mainly through I-shaped components and lap joints. Figure 9 As shown, the I-shaped member includes a parallel top plate and bottom plate, which are connected by a connecting plate. At the same time, mounting plates are provided at both ends of the top plate. The plane where the mounting plates are located is higher than the plane where the top plate is located. The mounting plates and the top plate are connected by an extension plate. Slots are provided on the side of the ceiling plate 3. The two ends of the bottom plate of the I-shaped member are respectively inserted into the slots of the two adjacent ceiling plates 3, and the two ends of the top plate of the I-shaped member are respectively fixed on the back of the two adjacent ceiling plates 3, so that the connection between the I-shaped member and the two adjacent ceiling plates 3 is completed, and a slot is formed between the mounting plate and the back of the ceiling plate 3. The lap joint includes a pair of lap joints that can be overlapped on the two hook-shaped structures of the lower keel, and a pair of insertion parts that can be inserted into the two slots, thereby completing the connection between the lower keel, the lap joint and the I-shaped member, and completing the installation of the ceiling plate 3.

[0055] Example 2

[0056] This embodiment is basically the same as Embodiment 1, and the difference lies only in that:

[0057] As Figure 10 shown, in this embodiment, the fixing part 411 refers to the top of the housing 41, and the movable part 412 refers to the bottom of the housing 41. The fixing part 411 is connected to the top fixing member 1 through an expansion bolt. The lower end of the shock-absorbing spring 43 is connected to the inner bottom of the housing 41, that is, the movable part 412 in this embodiment, and the upper end is connected to the keel 2 through a connecting rod 42. The movable part 412 is provided with a through hole whose inner diameter is larger than the outer diameter of the connecting rod 42 and smaller than the outer diameter of the shock-absorbing spring 43.

[0058] At this time, the stop end of the limit groove 53 is below the communication end, and the gravity of the movable part 412 and the movable block 414 causes the convex block 54 to press tightly on the stop end.

[0059] Embodiment 3

[0060] This embodiment is basically the same as Embodiment 1, and the difference lies only in that:

[0061] As Figure 11 shown, the top fixing member 1 is an I-shaped steel beam, and the I-shaped steel beam includes an upper mounting wing and a lower mounting wing. When installing the shock-absorbing device 4 on the I-shaped steel beam, first set a prefabricated hole on the lower mounting wing, then lap the housing 41 onto the lower mounting wing, and make the connecting section 421 of the connecting rod 42 pass through the prefabricated hole and then connect to the keel 2.

[0062] The specific embodiments described herein are only illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. An assembled ceiling with a shock-absorbing device, comprising a ceiling board (3) and a keel (2) for installing the ceiling board (3) to a top fixing member (1), characterized in that: A shock-absorbing device (4) is provided between the keel (2) and the top fixing member (1). The shock-absorbing device (4) includes a housing (41) and a shock-absorbing spring (43); the housing (41) is connected to the top fixing member (1); the shock-absorbing spring (43) is arranged inside the housing (41), the working direction of the shock-absorbing spring (43) is vertical, and one end of the shock-absorbing spring (43) in the working direction is connected to the housing (41), and the other end is connected to the keel (2) through a connecting rod (42). The housing (41) is provided with a through hole for the connecting rod (42) to extend out, and the inner diameter of the through hole is smaller than the outer diameter of the shock-absorbing spring (43); the housing (41) includes a fixed part (411) and a movable part (412), the direction from the movable part (412) to the fixed part (411) is parallel to the working direction of the shock-absorbing spring (43), and the housing (41) further includes an adjusting structure for adjusting the distance between the fixed part (411) and the movable part (412) to adjust the telescopic range of the shock-absorbing spring (43) inside the housing (41). The connecting rod (42) includes a shock-absorbing section (422) located inside the housing (41) and a connecting section (421) located outside the housing (41), and the connecting section (421) is connected to the keel (2); the shock-absorbing spring (43) is sleeved on the shock-absorbing section (422), one end of the shock-absorbing spring (43) in the working direction is connected to the inner bottom of the housing (41), and the other end is connected to the shock-absorbing section (422). The adjusting structure includes a fixed block (413) connected to the fixed part (411) and a movable block (414) connected to the movable part (412); the fixed block (413) is provided with a strip-shaped groove (51) with a vertical length direction and a number of locking grooves (52) arranged in sequence along the length direction of the strip-shaped groove (51), the locking grooves (52) are all communicated with the strip-shaped groove (51), and the length direction of the locking grooves (52) is not parallel to the length direction of the strip-shaped groove (51); the movable block (414) is provided with a convex block (54) that can be inserted into the strip-shaped groove (51) and the locking grooves (52) for sliding. The fixed block (413) is further provided with a limiting groove (53) communicated with the locking groove (52). The limiting groove (53) includes a communicating end communicated with the locking groove (52) and a stop end opposite to the communicating end, and the stop end is closer to the movable part (412) than the communicating end. One end of the strip-shaped groove (51) close to the movable part (412) is provided with a socket for the convex block (54) to enter and exit. The connecting section (421) is provided with a limiting block (44) for limiting the elastic expansion distance of the shock-absorbing spring (43); when the limiting block (44) abuts against the outer bottom surface of the housing (41), there is a gap between the end of the shock-absorbing section (422) and the inner top surface of the housing (41).

2. The prefabricated ceiling with a shock absorption device according to claim 1, characterized in that: A flexible gasket (431) is provided between the shock-absorbing spring (43) and the housing (41).

3. The prefabricated ceiling with a shock absorption device according to claim 1, characterized in that: The fixing block (413) is a cylindrical body with a vertical axial direction, and the locking groove (52) is an arc groove with a radian consistent with the circular ring radian of the radial section of the cylindrical body.

4. The prefabricated ceiling with a shock absorption device according to claim 1, characterized in that: The connecting rod (42) is provided with an external thread, and the limiting block (44) is a nut threadedly connected to the external thread.

5. An installation method of an assembled ceiling with a shock absorption device as described in any one of claims 1-4, characterized in that: It includes the following steps: S1. Connect the housing (41) to the top fixing member (1), and connect the shock-absorbing spring (43) to the keel (2) through the connecting rod (42); S2. Install the ceiling board (3) on the keel (2).

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