Expansion joint structure of suspended ceiling

Abstract

The present invention provides an expansion joint structure of a suspended ceiling, comprising a keel system, a telescopic bracket and a joint plate; the keel system is installed under the roof of a building, and is divided into two non-rigidly connected half-areas along the expansion joint of the roof of the building as a dividing line, and the two half-areas of the keel system are telescopically connected through a telescopic bracket, and the telescopic bracket is arranged directly opposite to the expansion joint of the roof of the building; wherein the telescopic bracket comprises at least one scissor unit, the scissor unit is composed of two scissor rods cross-hinged in the middle, and the two sides of the scissor unit are respectively connected to the two half-areas of the keel system, so that the scissor unit is opened or contracted to compensate for the telescopic movement between the two half-areas of the keel system; the joint plate is laid under the keel system, and the joint plate is arranged along the expansion joint of the roof of the building, and the expansion joint and the telescopic bracket are completely covered. The present invention can cooperate with the expansion joint of the roof of the building to compensate for the size and prevent the failure of the suspended ceiling.

Description

Technical Field

[0001] The invention relates to the field of decorative building materials, and in particular to an expansion joint structure of a suspended ceiling. Background Art

[0002] Suspended ceiling is a common product in the field of building materials and is widely used indoors in many buildings.

[0003] In the field of construction, in order to adapt to factors such as thermal expansion and contraction, load deformation, etc., expansion joints are set at specific locations to prevent the building from being squeezed and cracked due to stress. In the construction standards, it is generally required to arrange multiple expansion joints in the direction of length extension. For example, a bridge must have an expansion joint every section; long buildings must also have expansion joints every distance. The expansion joint is required to meet the expansion and contraction of the building in the length direction and the displacement in the vertical direction.

[0004] The existing suspended ceiling products are mostly used in small-area buildings, and do not have a structure that matches the expansion joint. However, the design of modern buildings is diverse. For example, large venues, airports, stations and other public buildings are very spacious, and these indoor buildings are equipped with expansion joints in accordance with the building standards. Therefore, the expansion joint structure of suspended ceiling products is also receiving more and more attention. If the suspended ceiling products do not have a corresponding expansion joint structure, the expansion joints of the building will expand and contract due to heat and cold, and the alternating stress will cause the expansion joints to move, break, or even fall.

[0005] It is not difficult to see that the existing technology still has certain defects. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide an expansion joint structure of a suspended ceiling, which can cooperate with the expansion joint of a building roof to perform size compensation and prevent the suspended ceiling from malfunctioning.

[0007] To achieve the above object, the present invention adopts the following technical solutions:

[0008] A expansion joint structure for a suspended ceiling comprises a keel system, a telescopic bracket and a joint plate; the keel system is installed under a building roof and is divided into two non-rigidly connected half-areas along the expansion joint of the building roof as a dividing line, the two half-areas of the keel system are telescopically connected by the telescopic bracket, and the telescopic bracket is arranged opposite to the expansion joint of the building roof; wherein the telescopic bracket comprises at least one scissor unit, the scissor unit is composed of two scissor rods cross-hinged in the middle, and the two sides of the scissor unit are respectively connected to the two half-areas of the keel system, so that the scissor unit can compensate for the telescopic movement between the two half-areas of the keel system when opening or contracting; the joint plate is laid under the keel system, and the joint plate is arranged along the expansion joint of the building roof to completely cover the expansion joint and the telescopic bracket.

[0009] Furthermore, the keel system includes a hanger and a main keel; the hanger is hoisted on the roof of the building, the main keel is hoisted under the hanger, and the main keel is arranged in parallel with the expansion joint on the roof of the building, so that the main keels of the two half-zones of the keel system are parallel to each other at the junction; the telescopic bracket is installed between the main keels at the junction, and the two sides of the scissor unit are respectively connected to the opposite main keels.

[0010] Furthermore, the keel system includes a hanger and a main keel; the hanger is hoisted on the roof of the building, the main keel is hoisted under the hanger, and the main keel is arranged crosswise with the expansion joint of the roof of the building, and is disconnected at the expansion joint opposite to the roof, so that the main keels of the two half areas of the keel system are connected to each other at the junction; the telescopic bracket is installed between the main keels at the junction, and the two sides of the scissor unit are respectively connected to the opposite main keels.

[0011] Furthermore, the ends of the two scissor rods at one end of the telescopic bracket are respectively connected to the two parallel main keels at the border, and the remaining ends on both sides of the telescopic bracket are respectively slidably connected to the two main keels along the extension direction of the expansion joint.

[0012] Furthermore, the ends of the two scissor rods at one end of the telescopic bracket are respectively connected to two opposite main keels at the junction, and the ends of the two scissor rods at the other end of the telescopic bracket are respectively slidably connected to two adjacent main keels at the junction along the extension direction of the expansion joint.

[0013] Furthermore, a flange is fixedly provided on the main keel, and the end of the scissor rod is installed and connected to the main keel through the flange.

[0014] Furthermore, the ends of the scissor rods are respectively connected to the two main keels at the junction through vertically inserted movable pins; a vertically arranged spring is provided between the movable pin and the main keel, so that the movable pin can slide in the vertical direction to compensate for the vertical misalignment of the two half-zones of the keel system at the junction.

[0015] Furthermore, the main keel is also provided with a hinge leaf, which is installed on the main keel and can rotate and swing; the ends of the scissors rods are respectively connected to the hinge leaves of the two main keels at the junction, so that the scissors unit can tilt and swing along the hinge leaf, compensating for the vertical misalignment of the two half areas of the keel system at the junction.

[0016] Furthermore, the joint plate includes a base plate and a cover plate that cooperate with each other. The base plate and the cover plate are spliced ​​in groups of two to form a connecting seam at the splicing line; the base plate is provided with a back shielding portion extending toward the cover plate at the connecting seam, and the cover plate is provided with a surface shielding portion extending toward the base plate at the seam. The base plate and the cover plate are installed at the bottom of the keel system, and when they are joined, the surface shielding portion of the cover plate covers the outside of the back shielding portion of the base plate, and a gap is left between the surface shielding portion and the back shielding portion.

[0017] Furthermore, the joint plate is hoisted and connected to both sides of the expansion joint on the roof of the building through hoisting components, and is laid under the keel system.

[0018] Furthermore, the hoisting member is flexible, with its top end fixedly connected to both sides of the expansion joint on the roof of the building, and its bottom end fixedly connected to the back side of the joint plate.

[0019] Furthermore, the hoisting member is rigid, and the bottom end of the hoisting member is slidably connected to the back side of the joint plate, so that the hoisting member and the joint plate slide accordingly when the expansion joint moves in a telescopic manner.

[0020] The expansion joint structure of a suspended ceiling provided by the present invention has the following advantages:

[0021] It can compensate for the expansion and contraction of the expansion joints on the roof of the building due to load stress, thermal expansion and contraction, etc., and cooperate with the movement of the roof of the building to prevent damage to the suspended ceiling;

[0022] As the expansion joints on the roof of the building move, the suspended ceiling always maintains a certain regularity, can expand and contract, move multiple times, and reset accordingly when the expansion joints of the building are restored;

[0023] The structure is simple, easy to manufacture and install, and the cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention 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 invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 This is a schematic diagram of the overall structure of a first embodiment of a single-layer keel system of an expansion joint structure of a suspended ceiling provided by the present invention.

[0026] Figure 2 A schematic diagram of the overall structure of a double-layer keel of Embodiment 2 of a double-layer keel system of an expansion joint structure of a suspended ceiling provided by the present invention.

[0027] Figure 3 Schematic diagram of the installation structure of a single-piece seam panel.

[0028] Figure 4 This is a top view of the structure of the main keel and the telescopic bracket of Example 1.

[0029] Figure 5 This is a schematic diagram of the structure of Embodiment 1 using a movable pin to compensate for vertical displacement.

[0030] Figure 6This is a schematic diagram of the structure of Embodiment 1 using hinged leaves to compensate for vertical displacement.

[0031] Figure 7 This is a top view of the structure of the main keel and telescopic bracket of Example 2.

[0032] Figure 8 This is a schematic diagram of the structure of Embodiment 2 using a movable pin to compensate for vertical displacement.

[0033] Fig. 9 This is a schematic diagram of the structure of Embodiment 2 using hinged leaves to compensate for vertical displacement.

[0034] Description of reference numerals:

[0035] 0. Expansion joints

[0036] 1. Keel system 2. Telescopic bracket

[0037] 3. Joint plate 4. Suspension rod

[0038] 5. Main keel 6. Bottom plate

[0039] 7. Cover plate 8. Back shielding part

[0040] 9. Surface shielding part 10. Flange

[0041] 11. Scissor unit 12. Scissor rod

[0042] 13. Movable pin 14. Spring

[0043] 15. Hinge Page DETAILED DESCRIPTION

[0044] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described in combination with the embodiments of the present invention and the accompanying drawings. It should be noted that the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0045] Embodiment 1

[0046] See also Figures 1 to 4The embodiment of the present invention provides an expansion joint structure of a suspended ceiling, comprising a keel system 1, a telescopic bracket 2 and a joint plate 3; the keel system 1 is installed under the roof of a building, and is divided into two non-rigidly connected half-areas along the expansion joint 0 on the roof of the building as a dividing line, and the two half-areas of the keel system 1 are telescopically connected through the telescopic bracket 2, and the telescopic bracket 2 is arranged opposite to the expansion joint 0 on the roof of the building; wherein the telescopic bracket 2 comprises at least one scissor unit 11, and the scissor unit 11 is composed of two scissor rods 12 cross-hinged in the middle, and the two ends of the scissor unit 11 are respectively connected to the two half-areas of the keel system 1, so that the scissor unit 11 can compensate for the telescopic movement between the two half-areas of the keel system 1 when it is opened or contracted; the joint plate 3 is laid under the keel system 1, and the joint plate 3 is arranged along the expansion joint 0 on the roof of the building to completely cover the expansion joint 0 and the telescopic bracket 2.

[0047] The expansion joint 0 on the roof of a building is generally set every several hundred meters, and the structural solution of the present invention can be applied to each expansion joint 0. It should also be noted that the rest of the structure of the suspended ceiling, such as the installation of the ceiling, the specific structure of each keel, and other devices on the suspended ceiling, are not within the scope of the present invention.

[0048] The telescopic bracket 2 is arranged on the keel system 1, which is conducive to adapting to various types and shapes of ceiling structures, and can be widely used in the field of suspended ceilings as a universal product. When the expansion joint 0 of the building roof expands and contracts due to load, thermal expansion and contraction, the two half areas of the keel system 1 will expand and contract horizontally and shift vertically at the junction. The telescopic bracket 2 can not only adapt to the activity, but also produce a traction effect, so that the keel system 1 as a whole is reset accordingly when the building expansion joint 0 is restored.

[0049] Specifically, when the building expansion joint 0 expands and contracts and moves, this movement will be transmitted to the keel system 1, causing the junction of its two half-areas to move accordingly. The opening or closing of the scissor unit 11 can follow this movement and traction the keel system 1, so that the movement of the keel system 1 will always remain unchanged. When the keel system 1 moves, the joint plate 3 can be adjusted accordingly, and the expansion bracket 2 and the expansion joint 0 are always covered to achieve the effect of maintaining beauty.

[0050] The specific structure of the keel system 1 may affect the arrangement of the telescopic bracket 2. Specifically, it can be divided into two situations: the main keel 5 and the expansion joint 0 are parallel or orthogonal.

[0051] See Figures 4 to 6In this embodiment, the scheme that the main keel 5 is parallel to the expansion joint 0 is described in detail. Preferably, the keel system 1 includes a suspension rod 4 and a main keel 5; the suspension rod 4 is suspended on the roof of the building, the main keel 5 is suspended under the suspension rod 4, and the main keel 5 is arranged parallel to the expansion joint 0 on the roof of the building, so that the main keels 5 of the two half areas of the keel system 1 at the junction are parallel to each other; the telescopic bracket 2 is installed between the main keels 5 at the junction, and the two sides of the scissor unit 11 are respectively connected to the main keels 5 facing each other.

[0052] It should be noted that in the present invention, only the main keel 5 is connected to the telescopic bracket 2 and functions. Under the main keel 5, a lower keel and other structures may be provided for ceiling installation. However, this is not the scope of the present invention. Therefore, the possible lower keel and ceiling and other structures irrelevant to the present invention are omitted in the specification.

[0053] In this scheme, the main keels 5 at the borders move synchronously with the expansion joints 0. When the expansion joints 0 are opened, the main keels 5 at the borders move away from each other; when the expansion joints 0 are contracted, the main keels 5 at the borders move closer to each other.

[0054] See Figure 4 At this time, as one of the preferred solutions, the ends of the two scissor rods 12 at one end of the telescopic bracket 2 are respectively connected to the two parallel main keels 5 at the border, and the remaining ends on both sides of the telescopic bracket 2 are respectively slidably connected to the two main keels 5 along the extension direction of the expansion joint 0.

[0055] It should be noted that each telescopic bracket 2 can be composed of a single scissor unit 11 alone, or can be composed of multiple scissor units 11 connected in a linkage manner. The individually arranged scissor units 11 can operate independently, have a simple structure, are easy to build, and can always pull and keep the main keel 5 at the border stable. Figure 4 The structure shown is this structure. The scheme structure of multiple scissor-type units 11 linkage is relatively complex and the difficulty of construction is increased. However, due to the linkage effect, the stability is higher.

[0056] In addition, the ends of the two scissor rods 12 at one end of the telescopic bracket 2 are respectively connected to the two parallel main keels 5 at the border, and the connection method can be hinged or slidably connected along the extension direction of the expansion joint 0. If the hinged method is adopted, it can ensure that the position relationship between the telescopic bracket 2 and the main keel 5 can always be reset to the original state during the telescopic movement of the expansion joint 0. If the sliding connection method is adopted, both ends of the telescopic bracket 2 can slide to adapt to the opening and closing movement of the scissor unit 11, but it cannot ensure that each opening and closing movement can be restored to the original state. It is possible that after an opening and closing movement, the entire telescopic bracket 2 has moved a certain distance.

[0057] Since the movement of the building expansion joint 0 is not necessarily horizontal expansion movement, there is also vertical displacement. Figure 5 In order to meet the need of compensating for the dislocation in the vertical direction, preferably, the ends of the scissor rod 12 are respectively connected to the two main keels 5 at the junction through vertically inserted movable pins 13; a vertically arranged spring 14 is provided between the movable pin 13 and the main keel 5, so that the movable pin 13 can slide in the vertical direction to compensate for the vertical dislocation of the two half areas of the keel system 1 at the junction.

[0058] When the building expansion joint 0 is displaced in the vertical direction, the main keels 5 on both sides of the two half-areas of the keel system 1 will be one high and one low at the junction. At this time, the movable pin 13 can slide a certain distance in the vertical direction to compensate for the height difference. At the same time, the spring 14 can ensure that when the building expansion joint 0 is restored, the telescopic bracket 2 can drive the two keels to restore accordingly.

[0059] In addition to the above-mentioned structural solution of using the movable pin 13 to slide and compensate for the height difference, a tilting and swinging solution can also be used. Specifically, the main keel 5 is also provided with a hinge leaf 15, which is installed on the main keel 5 and can rotate and swing; the ends of the scissor rod 12 are respectively connected to the hinge leaves 15 of the two main keels 5 at the border, so that the scissor unit 11 can tilt and swing along the hinge leaf to compensate for the vertical displacement of the two half areas of the keel system 1 at the border.

[0060] When the vertical displacement of the building expansion joint 0 causes the main keel 5 to have a height difference, the hinge leaf 15 will also swing and rotate accordingly, and then drive the telescopic bracket 2 to tilt and swing at a certain angle. Its working principle is slightly different from the above-mentioned movable pin 13 telescopic solution, which is also a feasible solution.

[0061] See Figure 1 to Figure 2 Preferably, the joint plate 3 includes a base plate 6 and a cover plate 7 that cooperate with each other. The base plate 6 and the cover plate 7 are spliced ​​in groups of two to form a connecting seam at the splicing line; the base plate 6 is provided with a back shielding portion 8 extending toward the cover plate 7 at the connecting seam, and the cover plate 7 is provided with a surface shielding portion 9 extending toward the base plate 6 at the seam. The base plate 6 and the cover plate 7 are installed at the bottom of the keel system 1. When they are joined, the surface shielding portion 9 of the cover plate 7 covers the outside of the back shielding portion 8 of the base plate 6, and a gap is left between the surface shielding portion 9 and the back shielding portion 8.

[0062] The function of the joint plate 3 is to maintain the appearance and shield the keel system 1, telescopic bracket 2 and building expansion joint 0 structure on its back side. The movement of the building expansion joint 0 will be transmitted to the keel system 1, and then to the joint plate 3. Normally, no matter how the building expansion joint 0 moves, the bottom plate 6 and the cover plate 7 maintain a specific horizontal movement and vertical displacement, and the front shielding part 9 and the back shielding part 8 in a displaced overlapping relationship can shield the back side. And as long as the gap between the front shielding part 9 and the back shielding part 8 is large enough, it can be ensured that the two will not collide.

[0063] See also Figure 3 The joint plate 3 may also adopt a single-piece solution: preferably, the joint plate 3 is hoisted and connected to both sides of the expansion joint 0 on the roof of the building through hoisting components, and is laid under the keel system 1.

[0064] Furthermore, there are two subdivision schemes:

[0065] In the first solution, the hoisting member is flexible, and its top end is fixedly connected to both sides of the expansion joint 0 on the roof of the building, and its bottom end is fixedly connected to the back side of the joint plate 3.

[0066] In the second solution, the hoisting member is rigid, and the bottom end of the hoisting member is slidably connected to the back side of the joint plate 3, so that when the expansion joint 0 is telescopically moved, the hoisting member and the joint plate 3 slide accordingly.

[0067] When the expansion joint 0 performs expansion and contraction movement, the back side of the single-piece joint plate 3 and the hanging member slide to adapt to the movement of the expansion joint 0. In this way, the single-piece joint plate 3 is always covered under the expansion joint 0 and the expansion bracket 2. The single-piece joint plate 3 has no connection seam, and the overall aesthetics is better.

[0068] Embodiment 2

[0069] The only difference between this embodiment and the first embodiment is that the main keel 5 and the expansion joint 0 in the keel system 1 are arranged crosswise, which leads to a slight adjustment in the arrangement of the telescopic bracket 2 .

[0070] See also Figure 7 and Fig. 9 Specifically, preferably, the keel system 1 includes a hanger 4 and a main keel 5; the hanger 4 is hoisted on the roof of the building, the main keel 5 is hoisted under the hanger 4, and the main keel 5 is arranged crosswise with the expansion joint 0 on the roof of the building, and is disconnected at the position opposite to the expansion joint 0 on the roof, so that the main keels 5 of the two half areas of the keel system 1 are connected to each other at the junction; the telescopic bracket 2 is installed between the main keels 5 at the junction, and the two sides of the scissor unit 11 are respectively connected to the opposite main keels 5.

[0071] Correspondingly, the ends of the two scissor rods 12 at one end of the telescopic bracket 2 are respectively connected to the two opposite main keels 5 at the border, and the ends of the two scissor rods 12 at the other end of the telescopic bracket 2 are respectively slidably connected to the two adjacent main keels 5 at the border along the extension direction of the expansion joint 0.

[0072] In this scheme, each scissor unit 11 independently pulls the main keels 5 on both sides of the junction. A set of scissor units 11 is installed between each pair of main keels 5 arranged opposite to each other and between adjacent pairs of main keels 5 arranged in parallel, to pull each other and adapt to the telescopic movement of the expansion joint 0. In order to facilitate the connection between the scissor rod 12 and the main keel 5, a flange 10 is fixed on the main keel 5, and the end of the scissor rod 12 is installed and connected to the main keel 5 through the flange 10.

[0073] The remaining structural schemes of this embodiment, such as the structural scheme for realizing vertical displacement, the specific structure of the joint plate 3, etc., are completely the same as those of the first embodiment, and are not described in detail here. The compensation structure for vertical displacement is shown in FIG. and FIG.

[0074] The expansion joint structure of a suspended ceiling provided by the present invention can compensate for the expansion and contraction of the expansion joint 0 on the roof of a building due to load stress, thermal expansion and contraction, etc., and cooperate with the movement of the roof of the building, thereby preventing the suspended ceiling from deformation, breakage, or even ceiling falling due to the movement of the expansion joint 0. The expansion bracket 2 adopts a simple and effective scissor-fork structure, and applies its movement characteristics. During the movement of the expansion joint 0 on the roof of the building, it can expand and contract and shift multiple times to maintain the overall stability of the suspended ceiling product, and reset accordingly when the expansion joint 0 of the building is restored. It has a simple structure, is easy to manufacture and install, and has a low cost.

[0075] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. An expansion joint structure of a suspended ceiling, characterized in that: It includes a keel system, a telescopic bracket and a joint plate; the keel system is installed under the roof of the building, and is divided into two non-rigidly connected half-areas along the expansion joint of the roof of the building as a dividing line, the two half-areas of the keel system are telescopically connected through the telescopic bracket, and the telescopic bracket is arranged opposite to the expansion joint of the roof of the building; wherein the telescopic bracket includes at least one scissor unit, the scissor unit is composed of two scissor rods cross-hinged in the middle, and the two sides of the scissor unit are respectively connected to the two half-areas of the keel system, so that the scissor unit can compensate for the telescopic movement between the two half-areas of the keel system when it is opened or contracted; the joint plate is laid under the keel system, and the joint plate is arranged along the expansion joint of the roof of the building to completely cover the expansion joint and the telescopic bracket.

2. The expansion joint structure of the suspended ceiling according to claim 1, characterized in that: The keel system includes a hanger and a main keel; the hanger is hoisted on the roof of the building, the main keel is hoisted under the hanger, and the main keel is arranged in parallel with the expansion joint on the roof of the building, so that the main keels of the two half-areas of the keel system at the junction are parallel to each other; the telescopic bracket is installed between the main keels at the junction, and the two sides of the scissor unit are respectively connected to the opposite main keels.

3. The expansion joint structure of the suspended ceiling according to claim 1, characterized in that: The keel system includes a hanger and a main keel; the hanger is hoisted on the roof of the building, the main keel is hoisted under the hanger, and the main keel is arranged crosswise with the expansion joint of the roof of the building, and is disconnected at the expansion joint opposite to the roof, so that the main keels of the two half areas of the keel system are connected to each other at the junction; the telescopic bracket is installed between the main keels at the junction, and the two sides of the scissor unit are respectively connected to the opposite main keels.

4. The expansion joint structure of the suspended ceiling according to claim 2, characterized in that: The ends of the two scissor rods at one end of the telescopic bracket are respectively connected to the two parallel main keels at the border, and the remaining ends on both sides of the telescopic bracket are respectively slidably connected to the two main keels along the extension direction of the expansion joint.

5. The expansion joint structure of the suspended ceiling according to claim 3, characterized in that: The ends of the two scissor rods at one end of the telescopic bracket are respectively connected to two opposite main keels at the border, and the ends of the two scissor rods at the other end of the telescopic bracket are respectively slidably connected to two adjacent main keels at the border along the extension direction of the expansion joint.

6. The expansion joint structure of the suspended ceiling according to claim 5, characterized in that: A flange is fixedly provided on the main keel, and the end of the scissor rod is installed and connected to the main keel through the flange.

7. The expansion joint structure of a suspended ceiling according to claim 2 or 3, characterized in that: The ends of the scissor rods are respectively connected to the two main keels at the junction through vertically inserted movable pins; a vertically arranged spring is provided between the movable pin and the main keel, so that the movable pin can slide in the vertical direction to compensate for the vertical displacement of the two half areas of the keel system at the junction.

8. The expansion joint structure of a suspended ceiling according to claim 2 or 3, characterized in that: The main keel is also provided with a hinge leaf, which is installed on the main keel and can rotate and swing; the ends of the scissor rods are respectively connected to the hinge leaves of the two main keels at the junction, so that the scissor unit can tilt and swing along the hinge leaf to compensate for the vertical displacement of the two half areas of the keel system at the junction.

9. The expansion joint structure of a suspended ceiling according to any one of claims 1 to 3, characterized in that: The joint plate includes a base plate and a cover plate that cooperate with each other. The base plate and the cover plate are spliced ​​in groups of two to form a connecting seam at the splicing line; the base plate is provided with a back shielding portion extending toward the cover plate at the connecting seam, and the cover plate is provided with a surface shielding portion extending toward the base plate at the seam. The base plate and the cover plate are installed at the bottom of the keel system. When they are joined, the surface shielding portion of the cover plate covers the outside of the back shielding portion of the base plate, and a gap is left between the surface shielding portion and the back shielding portion.

10. The expansion joint structure of a suspended ceiling according to any one of claims 1 to 3, characterized in that: The joint plate is hoisted and connected to both sides of the expansion joint on the roof of the building through hoisting components, and is laid under the keel system.

11. The expansion joint structure of a suspended ceiling according to claim 10, characterized in that: The hoisting component is flexible, with its top end fixedly connected to both sides of the expansion joint on the roof of the building, and its bottom end fixedly connected to the back side of the joint plate.

12. The expansion joint structure of a suspended ceiling according to claim 10, characterized in that: The hoisting component is rigid, and the bottom end of the hoisting component is slidably connected to the back side of the joint plate, so that the hoisting component and the joint plate slide accordingly when the expansion joint moves in a telescopic manner.

Images