Mounting structure and mounting method for high-rise lobby decorative suspended ceiling

Abstract

The invention discloses a high-rise lobby decoration suspended ceiling mounting structure and a mounting method thereof, and relates to the technical field of suspended ceiling mounting, the high-rise lobby decoration suspended ceiling mounting structure comprises a main keel, an auxiliary keel, a connecting keel, a hoisting assembly, a connecting assembly and a clamping and hanging assembly, the connecting assembly is used for fixedly connecting the auxiliary keel to the lower portion of the main keel, the clamping and hanging assembly is used for fixedly connecting the connecting keel to the lower portion of the auxiliary keel, first clamping protrusions are fixedly connected to the upper side and the lower side of the opening position of the main keel, and second clamping protrusions are fixedly connected to the front side and the rear side of the opening position of the auxiliary keel. First clamping hooks are fixedly connected to the left side and the right side of the bottom of the connecting keel. The keel fixing structure has the advantages that the keels are fixed in a clamping manner, so that deformation, damage or irreversible holes of the keels are avoided, the structural integrity of the keels is ensured, and the keels can be used for a long time or can be continuously used after being disassembled.

Description

Technical Field

[0001] The invention relates to the technical field of suspended ceiling installation, and in particular to a high-rise lobby decorative suspended ceiling installation structure and an installation method thereof. Background Art

[0002] Home decoration ceiling is a common part of home decoration. In the relevant technology, ceiling panels with fire resistance and sound absorption function are mostly made of gypsum board, calcium silicate board, ceramic board, mineral wool sound-absorbing board and other materials. It is a commonly used indoor ceiling decoration method. By choosing the decorative surface of different ceiling panels, a colorful artistic image of the interior top space can be created. It is one of the important parts of interior decoration.

[0003] Existing suspended ceilings usually use hanging plates to connect the main keel and the secondary keel, and the hanging plates are usually fixed to the main keel or the secondary keel using self-tapping screws. Screwing the self-tapping screws into the material will damage the surface structure of the keel and may cause local deformation or cracks in the material. This damage will weaken the overall strength of the keel, especially under heavy loads, which can easily lead to local breakage or loosening of the keel. Once the self-tapping screws are screwed into the material, especially the metal keel or the wooden keel, it will cause certain indentations or deformation to the material. During reverse disassembly, it is likely to get stuck or unable to twist, increasing the difficulty of disassembly. Secondly, the length of the hanging rod needs to be processed on-site according to the height of the central unit, which is time-consuming and labor-intensive. In view of the above problems, a high-rise lobby decorative ceiling installation structure and an installation method thereof are proposed to solve them. Summary of the invention

[0004] In order to solve the above technical problems, a high-rise lobby decorative ceiling installation structure and an installation method are provided, which solves the above-mentioned problem that the current existing ceiling usually uses hanging plates to connect the main keel and the secondary keel, and the hanging plates are usually fixed to the main keel or the secondary keel using self-tapping screws. Screwing the self-tapping screws into the material will damage the surface structure of the keel and may cause local deformation or cracks of the material. This damage will weaken the overall strength of the keel, especially under heavy load conditions, which may easily cause local breakage or loosening of the keel. Once the self-tapping screws are screwed into the material, especially the metal keel or the wooden keel, it will cause certain indentations or deformation to the material. During reverse disassembly, it is very likely to get stuck or unable to twist, which increases the difficulty of disassembly. Secondly, the length of the hanger needs to be processed on-site according to the height of the central unit, which is time-consuming and labor-intensive.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is: a high-rise lobby decorative ceiling installation structure, including a main keel, a secondary keel, a connecting keel, a hanging assembly, a connecting assembly and a hanging assembly, the hanging assembly is used to connect the main keel to the ceiling, the connecting assembly is used to fix the secondary keel under the main keel, the hanging assembly is used to fix the connecting keel under the secondary keel, the upper and lower sides of the main keel opening position are fixedly connected with a first clamping protrusion, the front and rear sides of the secondary keel opening position are fixedly connected with a second clamping protrusion, and the left and right sides of the bottom of the connecting keel are fixedly connected with a first clamping hook.

[0006] Preferably, the hanging assembly includes a fixed block, which is fixedly connected to the ceiling by nails, a first hanging rod is threadedly connected to the bottom of the fixed block, a fourth fastening bolt is threadedly connected to the outer surface of the upper end of the first hanging rod, the top of the fourth fastening bolt abuts against the bottom of the fixed block, and a threaded sleeve is threadedly connected to the bottom of the first hanging rod.

[0007] Preferably, a second hanger is threadedly connected to the lower part of the threaded sleeve, a connecting plate is sleeved on the bottom of the second hanger, a first U-shaped clip is fixedly connected to the bottom of the connecting plate, the first U-shaped clip is wrapped around the outside of the main keel, a second fastening bolt is threadedly connected to the outer surface of the lower end of the second hanger and the lower part of the connecting plate, and a third fastening bolt is threadedly connected to the outer surface of the lower end of the second hanger and the upper part of the connecting plate.

[0008] Preferably, a second U-shaped card is provided on one side of the first U-shaped card, a first buffer groove is opened through the middle part of the side edge of the second U-shaped card, a plug-in groove is opened on the top of the second U-shaped card, the bottom of the second U-shaped card is fitted with the bottom of the first U-shaped card, the second U-shaped card is sleeved with the second suspension rod through the plug-in groove, the outer surface of the second suspension rod is threadedly connected to the bottom of the top plate of the second U-shaped card with a first fastening bolt, a tension bolt is provided on the upper end of the first U-shaped card, the end of the tension bolt passes through the first buffer groove opened in the middle part of the second U-shaped card and is fixed by a nut.

[0009] Preferably, the connecting assembly includes a first connecting strip and a second connecting strip, the first connecting strip and the second connecting strip are respectively arranged on the left and right sides of the main keel, the first connecting strip is fixedly connected to a first clamping block at the bottom, the first clamping block is clamped to the inside of the secondary keel through a second clamping protrusion, the second connecting strip is fixedly connected to a second clamping block at the bottom, the second clamping block is also clamped to the inside of the secondary keel through a second clamping protrusion, the upper end of the first connecting strip bypasses the top of the main keel, and the first connecting strip is fixedly connected to a clamping plate below the opening position of the main keel.

[0010] Preferably, two clamping rods are fixedly connected to one side of the first connecting strip close to the main keel, a buckling groove is penetrated through the lower end of the second connecting strip, and the end of the clamping rod passes through the buckling groove under the main keel and is fixedly connected to a hook.

[0011] Preferably, a first hooking tooth is fixedly connected to one side of the middle part of the clamping plate close to the main keel, the first hooking tooth is interlocked with the first clamping protrusion, through holes are penetrated through the side edge of the clamping plate and both sides of the first hooking tooth, fifth fastening bolts are arranged inside the two through holes, two second buffer grooves are arranged on the second connecting strip, and the end of the fifth fastening bolt passes through the second buffer groove and is fixed by a nut.

[0012] Preferably, the card hanging assembly includes a side panel and an A-shaped card, a hanging plate is fixedly connected to the top of the side panel, a second card hanging tooth is fixedly connected to the bottom of the hanging plate, the second card hanging tooth and the second clamping protrusion are interlocked, a fixing plate is fixedly connected to the bottom of the side panel, a through groove is penetrated through the upper surface of the fixing plate, and a plug-in block is fixedly connected to the bottom of the fixing plate and below the through groove.

[0013] Preferably, the A-shaped card sleeve is connected to the outside of the connecting keel, and the plug-in block is plugged between the A-shaped card and the connecting keel, and the left and right sides of the bottom of the A-shaped card are fixedly connected with second plug-in hooks, and the second plug-in hooks are interlocked with the first plug-in hooks.

[0014] A method for installing a high-rise lobby decorative ceiling installation structure is used to implement the above-mentioned high-rise lobby decorative ceiling installation structure. S1: First, fix the fixing block to the ceiling by nailing, then screw the first suspension rod into the bottom of the fixing block and fix it with the fourth fastening bolt, then screw the threaded sleeve on the lower end of the first suspension rod, and screw the upper end of the second suspension rod into the lower end of the threaded sleeve, then put the first fastening bolt, the third fastening bolt and the connecting plate on the lower end of the second suspension rod, and screw the first fastening bolt upward; S2: Then, the height of the connecting plate is limited by the third fastening bolt, and then the second fastening bolt is screwed in to fix the connecting plate, and then the main keel is sleeved inside the first U-shaped clip, and then the second U-shaped clip is clamped on the other side of the main keel, and then the first fastening bolt is rotated to push the second U-shaped clip upward to provide secondary support for the main keel, and then the first U-shaped clip and the second U-shaped clip are fixed together by the tension bolts; S3: Then, the first clamping block and the second clamping block are obliquely inserted and installed into the interior of the secondary keel and limited by the second clamping protrusion, and then the first connecting strip is sleeved on the main keel along the end of the main keel, and the clamping plate and the first connecting strip are limited by the first clamping teeth, and then the second connecting strip is moved along the interior of the secondary keel to fit with the main keel, and at the same time, the hook is clamped in the buckle groove to limit the second connecting strip, and then the clamping plate and the second connecting strip are fixed together by the fifth fastening bolt, completing the connection between the main keel and the secondary keel; S4: Connect the A-shaped card sleeve to the outside of the connecting keel so that the second card hook and the first card hook are interlocked. At this time, a gap is left between the top of the A-shaped card and the connecting keel for the plug-in block to enter. Then move the side panel along the length direction of the connecting keel so that the plug-in block is inserted into the reserved gap. During the movement, the second card tooth will deform and fit the bottom surface of the hanging plate. When the side panel is fitted with the secondary keel, the second card tooth will restore its deformation to limit the position of the side panel.

[0015] Compared with the prior art, the advantages of the present invention are: 1. The present invention provides a hoisting assembly, a connecting assembly and a hanging assembly, and there is no need to drive automatic screws into the keel. The keels are fixed in a clip-on manner. The clip-on manner does not involve screws directly driving into or penetrating the keel, so the keel will not be deformed, damaged or have irreversible holes. This ensures the structural integrity of the keel, allowing it to be used for a long time or to continue to be used after disassembly. During disassembly, the clip-on manner will not leave irreversible screw holes or damage like self-tapping screws. The disassembled parts can be directly reused, reducing the overall cost of building decoration. In particular, during demolition, renovation or rearrangement, the existing ceiling system can be quickly disassembled and reinstalled, reducing waste and new material procurement.

[0016] 2. The present invention provides a lifting assembly and covers the main keel by means of a first U-shaped clip and a second U-shaped clip, thereby solving the problem of supporting the main keel with a single hanging piece in traditional technology. Compared with the traditional single hanging piece, the load can be dispersed more evenly, avoiding deformation or instability caused by excessive force on a single hanging point. This multi-point support method can significantly improve the stability of the main keel and avoid instability of the overall structure due to excessive local force.

[0017] 3. The present invention arranges a first hanger rod, a second hanger rod and a threaded sleeve. When the levelness of the suspended ceiling needs to be adjusted, the spacing between the first hanger rod and the second hanger rod can be adjusted by rotating the threaded sleeve, thereby saving the time for on-site production and adjustment of the hanger rods. Construction workers do not need cutting, welding or other on-site processing steps, and can quickly complete the horizontal adjustment of the suspended ceiling, thereby greatly improving construction efficiency. By rotating the threaded sleeve to adjust the spacing between the hangers, the levelness of the suspended ceiling can be controlled more accurately. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the connection between the main keel and the auxiliary keel in the present invention; Figure 3 It is a schematic diagram of the connection between the secondary keel and the connecting keel in the present invention; Figure 4 It is a schematic diagram of the connection between the auxiliary keel, the connecting keel and the hanging assembly in the present invention; Figure 5 It is a schematic diagram of the structure of the hoisting assembly in the present invention; Figure 6 It is a front view of the hoisting assembly in the present invention; Figure 7 for Figure 5 A partial enlarged schematic diagram of point B in the middle; Figure 8 It is a schematic diagram of the structure of the connection assembly in the present invention; Fig. 9 An exploded view of the connection assembly in the present invention; Fig.10 This is an exploded view of the hanging assembly in the present invention; Fig.11 It is a front view of the connection keel and the A-shaped card in the present invention; Fig.12 for Figure 4 A local enlarged schematic diagram of the middle A; Fig.13 for Figure 2 A partial enlarged schematic diagram of point C in the middle.

[0019] The numbers in the figure are: 1. Main keel; 2. Secondary keel; 3. Second clamping protrusion; 4. Connecting keel; 5. Lifting assembly; 501. Fixing block; 502. First lifting rod; 503. Threaded sleeve; 504. Second lifting rod; 505. First U-shaped card; 506. Second U-shaped card; 507. First buffer groove; 508. Plug-in groove; 509. Tension bolt; 510. First fastening bolt; 511. Second fastening bolt; 512. Third fastening bolt; 513. Connecting plate; 514. Fourth fastening bolt; 6. Connecting assembly; 601. First connecting strip; 602. First clamping block; 603. Clamping rod; 604. Hook; 605. First clamping tooth; 606. Through hole; 607. Fifth fastening bolt; 608. Second connecting strip; 609. Second clamping block; 610. Second buffer groove; 611. Clamping plate; 612. Buckle groove 7. Card hanging assembly; 701. Side plate; 702. Hanging plate; 703. Fixed plate; 704. Through slot; 705. Second card hanging tooth; 706. A-shaped card; 707. Second card hook; 708. Plug-in block; 8. A first engaging protrusion; 9. A first engaging hook. DETAILED DESCRIPTION

[0020] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0021] Reference Figure 1-13 As shown, a high-rise lobby decorative ceiling installation structure includes a main keel 1, a secondary keel 2, a connecting keel 4, a hanging assembly 5, a connecting assembly 6 and a hanging assembly 7. The hanging assembly 5 is used to connect the main keel 1 to the ceiling, the connecting assembly 6 is used to fix the secondary keel 2 to the bottom of the main keel 1, and the hanging assembly 7 is used to fix the connecting keel 4 to the bottom of the secondary keel 2. The upper and lower sides of the opening position of the main keel 1 are fixedly connected with a first clamping protrusion 8, the front and rear sides of the opening position of the secondary keel 2 are fixedly connected with a second clamping protrusion 3, the left and right sides of the bottom of the connecting keel 4 are fixedly connected with a first clamping hook 9, and the opening at the bottom of the connecting keel 4 can be used for the buckling of aluminum gussets, thereby improving the overall aesthetics of the ceiling.

[0022] Furthermore, the hanging assembly 5 includes a fixed block 501, which is fixedly connected to the ceiling by nails, and the first hanging rod 502 is threadedly connected to the bottom of the fixed block 501, and the fourth fastening bolt 514 is threadedly connected to the outer surface of the upper end of the first hanging rod 502, and the top of the fourth fastening bolt 514 abuts against the bottom of the fixed block 501, and the threaded sleeve 503 is threadedly connected to the bottom of the first hanging rod 502.

[0023] Furthermore, a second hanger 504 is threadedly connected to the lower part of the threaded sleeve 503, a connecting plate 513 is sleeved on the bottom of the second hanger 504, a first U-shaped clip 505 is fixedly connected to the bottom of the connecting plate 513, and the first U-shaped clip 505 is covered on the outside of the main keel 1. The outer surface of the lower end of the second hanger 504 and the lower part of the connecting plate 513 are threadedly connected with a second fastening bolt 511, and the outer surface of the lower end of the second hanger 504 and the upper part of the connecting plate 513 are threadedly connected with a third fastening bolt 512. There is a gap between the lower end of the first hanger 502 and the upper end of the second hanger 504 inside the threaded sleeve 503. When the levelness needs to be adjusted, the distance between the first hanger 502 and the second hanger 504 can be adjusted by rotating the threaded sleeve 503, thereby adjusting the levelness of the ceiling.

[0024] Furthermore, a second U-shaped card 506 is provided on one side of the first U-shaped card 505, a first buffer groove 507 is opened through the middle part of the side of the second U-shaped card 506, a plug-in groove 508 is opened above the second U-shaped card 506, the bottom of the second U-shaped card 506 is fitted with the bottom of the first U-shaped card 505, the second U-shaped card 506 is sleeved with the second suspension rod 504 through the plug-in groove 508, the outer surface of the second suspension rod 504 is threadedly connected to the lower part of the upper top plate of the second U-shaped card 506 with a first fastening bolt 510, a tension bolt 509 is provided at the upper end of the first U-shaped card 505, the end of the tension bolt 509 passes through the first buffer groove 507 opened in the middle part of the second U-shaped card 506 and is fixed by a nut, and the setting of the first buffer groove 507 and the tension bolt 509 allows a certain horizontal displacement, thereby increasing the fault tolerance and safety of the structure.

[0025] Specifically, the connecting component 6 includes a first connecting strip 601 and a second connecting strip 608, and the first connecting strip 601 and the second connecting strip 608 are respectively arranged on the left and right sides of the main keel 1. The first connecting strip 601 is fixedly connected to a first clamping block 602 at the bottom, and the first clamping block 602 is clamped to the inside of the secondary keel 2 through a second clamping protrusion 3. The second connecting strip 608 is fixedly connected to a second clamping block 609 at the bottom, and the top two sides of the second clamping block 609 are also clamped to the inside of the secondary keel 2 through the second clamping protrusion 3. The upper end of the first connecting strip 601 bypasses the top of the main keel 1, and the first connecting strip 601 is fixedly connected to a clamping plate 611 below the opening position of the main keel 1. The first clamping block 602 and the second clamping block 609 can be obliquely inserted into the inside of the secondary keel 2, and then rotated after insertion to make it perpendicular to the secondary keel 2, and then the second clamping protrusion 3 can be used for limiting.

[0026] Specifically, two clamping rods 603 are fixedly connected to one side of the first connecting strip 601 close to the main keel 1, and a buckling groove 612 is penetrated through the lower end of the second connecting strip 608. The end of the clamping rod 603 passes through the buckling groove 612 under the main keel 1 and is fixedly connected to a hook 604.

[0027] Furthermore, a first hooking tooth 605 is fixedly connected to one side of the middle part of the clamping plate 611 close to the main keel 1, and the first hooking tooth 605 is interlocked with the first clamping protrusion 8. Through holes 606 are provided on the side of the clamping plate 611 and both sides of the first hooking tooth 605, and fifth fastening bolts 607 are provided inside the two through holes 606. Two second buffer grooves 610 are provided on the second connecting strip 608, and the end of the fifth fastening bolt 607 passes through the second buffer groove 610 and is fixed by a nut. The setting of the second buffer groove 610 allows a certain installation error, thereby improving the flexibility and fault tolerance of the installation.

[0028] Preferably, the hanging assembly 7 includes a side panel 701 and an A-shaped clip 706, a hanging plate 702 is fixedly connected to the top of the side panel 701, a second hanging tooth 705 is fixedly connected to the bottom of the hanging plate 702, the second hanging tooth 705 is interlocked with the second locking protrusion 3, a fixing plate 703 is fixedly connected to the bottom of the side panel 701, a through groove 704 is penetrated through the upper surface of the fixing plate 703, a plug-in block 708 is fixedly connected to the bottom of the fixing plate 703 and below the through groove 704, the A-shaped clip 706 is sleeved on the outside of the connecting keel 4, and the second locking hook 707 is buckled with the first locking hook 9, thereby realizing a quick and stable connection of the connecting keel 4.

[0029] Specifically, the A-shaped card 706 is sleeved on the outside of the connecting keel 4, and the plug-in block 708 is plugged between the A-shaped card 706 and the connecting keel 4. The left and right sides of the bottom of the A-shaped card 706 are fixedly connected with the second plug-in hook 707. The second plug-in hook 707 is interlocked with the first plug-in hook 9. The plug-in block 708 is plugged between the A-shaped card 706 and the connecting keel 4, which increases the firmness of the connection and prevents the connecting keel 4 from falling off.

[0030] A method for installing a high-rise lobby decorative ceiling installation structure is used to implement the above-mentioned high-rise lobby decorative ceiling installation structure. S1: First, fix the fixing block 501 to the ceiling by nailing, then screw the first suspension rod 502 into the bottom of the fixing block 501 and fix it with the fourth fastening bolt 514, then screw the threaded sleeve 503 on the lower end of the first suspension rod 502, and screw the upper end of the second suspension rod 504 into the lower end of the threaded sleeve 503, then put the first fastening bolt 510, the third fastening bolt 512 and the connecting plate 513 on the lower end of the second suspension rod 504, and screw the first fastening bolt 510 upward; S2: Then, the height of the connecting plate 513 is limited by the third fastening bolt 512, and then the second fastening bolt 511 is screwed in to fix the connecting plate 513, and then the main keel 1 is sleeved inside the first U-shaped clip 505, and then the second U-shaped clip 506 is clamped on the other side of the main keel 1, and then the first fastening bolt 510 is rotated to push the second U-shaped clip 506 upward to provide secondary support for the main keel 1, and then the first U-shaped clip 505 and the second U-shaped clip 506 are fixed together by the tension bolt 509; S3: Then, the first clamping block 602 and the second clamping block 609 are installed into the interior of the secondary keel 2 and limited by the second clamping protrusion 3, and then the first connecting strip 601 is sleeved on the main keel 1 along the end of the main keel 1, and the clamping plate 611 and the first connecting strip 601 are limited by the first clamping tooth 605, and then the second connecting strip 608 is moved along the interior of the secondary keel 2 to make it fit with the main keel 1, and at the same time, the hook 604 is clamped in the buckle groove 612 to limit the second connecting strip 608, and then the clamping plate 611 and the second connecting strip 608 are fixed together by the fifth fastening bolt 607, and the connection between the main keel 1 and the secondary keel 2 is completed; S4: The A-shaped card 706 is sleeved on the outside of the connecting keel 4 so that the second connecting hook 707 and the first connecting hook 9 are interlocked. At this time, a gap is left between the top of the A-shaped card 706 and the connecting keel 4 for the plug-in block 708 to enter. Then the side panel 701 is moved along the length direction of the connecting keel 4 so that the plug-in block 708 is inserted into the reserved gap. During the movement, the second hooking tooth 705 will be deformed to fit the bottom surface of the hanging plate 702. When the side panel 701 is fitted with the secondary keel 2, the second hooking tooth 705 will restore its deformation to limit the position of the side panel 701.

[0031] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A high-rise lobby decorative ceiling installation structure, characterized by: The invention comprises a main keel (1), a secondary keel (2), a connecting keel (4), a hanging assembly (5), a connecting assembly (6) and a hanging assembly (7), wherein the hanging assembly (5) is used to connect the main keel (1) to the ceiling, the connecting assembly (6) is used to fix the secondary keel (2) to the bottom of the main keel (1), and the hanging assembly (7) is used to fix the connecting keel (4) to the bottom of the secondary keel (2). The upper and lower sides of the opening position of the main keel (1) are fixedly connected with first locking protrusions (8), the front and rear sides of the opening position of the secondary keel (2) are fixedly connected with second locking protrusions (3), and the left and right sides of the bottom of the connecting keel (4) are fixedly connected with first locking hooks (9).

2. A high-rise lobby decorative ceiling installation structure according to claim 1, characterized in that: The hanging assembly (5) comprises a fixing block (501), wherein the fixing block (501) is fixedly connected to the ceiling by means of nails, a first hanging rod (502) is threadedly connected to the bottom of the fixing block (501), a fourth fastening bolt (514) is threadedly connected to the outer surface of the upper end of the first hanging rod (502), the top of the fourth fastening bolt (514) abuts against the bottom of the fixing block (501), and a threaded sleeve (503) is threadedly connected to the bottom of the first hanging rod (502).

3. The high-rise lobby decorative ceiling installation structure according to claim 2 is characterized by: A second suspension rod (504) is threadedly connected to the lower part of the threaded sleeve (503); a connecting plate (513) is sleeved on the bottom of the second suspension rod (504); a first U-shaped clip (505) is fixedly connected to the bottom of the connecting plate (513); the first U-shaped clip (505) is wrapped around the outside of the main keel (1); a second fastening bolt (511) is threadedly connected to the outer surface of the lower end of the second suspension rod (504) and the lower part of the connecting plate (513); and a third fastening bolt (512) is threadedly connected to the outer surface of the lower end of the second suspension rod (504) and the upper part of the connecting plate (513).

4. The high-rise lobby decorative ceiling installation structure according to claim 3 is characterized by: A second U-shaped card (506) is provided on one side of the first U-shaped card (505), a first buffer groove (507) is provided through the middle of the side of the second U-shaped card (506), a plug-in groove (508) is provided on the top of the second U-shaped card (506), the bottom of the second U-shaped card (506) is fitted with the bottom of the first U-shaped card (505), the second U-shaped card (506) is sleeved with the second suspension rod (504) through the plug-in groove (508), the outer surface of the second suspension rod (504) and the bottom of the upper top plate of the second U-shaped card (506) are threadedly connected with a first fastening bolt (510), a tension bolt (509) is provided on the upper end of the first U-shaped card (505), the end of the tension bolt (509) passes through the first buffer groove (507) provided in the middle of the second U-shaped card (506) and is fixed by a nut.

5. The high-rise lobby decorative ceiling installation structure according to claim 1 is characterized by: The connection assembly (6) comprises a first connection bar (601) and a second connection bar (608), wherein the first connection bar (601) and the second connection bar (608) are respectively arranged on the left and right sides of the main keel (1), wherein the first connection bar (601) is fixedly connected to a first clamping block (602) at the bottom, wherein the first clamping block (602) is clamped to the inside of the secondary keel (2) via a second clamping protrusion (3), wherein the second connection bar (608) is fixedly connected to a second clamping block (609) at the bottom, wherein the second clamping block (609) is also clamped to the inside of the secondary keel (2) via the second clamping protrusion (3), wherein the upper end of the first connection bar (601) passes over the top of the main keel (1), and a clamping plate (611) is fixedly connected to the first connection bar (601) below the opening of the main keel (1).

6. The high-rise lobby decorative ceiling installation structure according to claim 5, characterized in that: Two clamping rods (603) are fixedly connected to one side of the first connecting strip (601) close to the main keel (1), a buckling groove (612) is penetrated through the lower end of the second connecting strip (608), and the end of the clamping rod (603) passes through the buckling groove (612) under the main keel (1) and is fixedly connected to a hook (604).

7. The high-rise lobby decorative ceiling installation structure according to claim 5, characterized in that: A first hooking tooth (605) is fixedly connected to one side of the middle of the clamping plate (611) close to the main keel (1); the first hooking tooth (605) is interlocked with the first clamping protrusion (8); through holes (606) are provided through the side of the clamping plate (611) and both sides of the first hooking tooth (605); fifth fastening bolts (607) are provided inside the two through holes (606); two second buffer grooves (610) are provided on the second connecting strip (608); the ends of the fifth fastening bolts (607) pass through the second buffer grooves (610) and are fixed by nuts.

8. The high-rise lobby decorative ceiling installation structure according to claim 1 is characterized by: The hanging assembly (7) comprises a side plate (701) and an A-shaped clip (706); a hanging plate (702) is fixedly connected to the top of the side plate (701); a second hanging tooth (705) is fixedly connected to the bottom of the hanging plate (702); the second hanging tooth (705) is interlocked with a second hooking protrusion (3); a fixing plate (703) is fixedly connected to the bottom of the side plate (701); a through slot (704) is formed through the upper surface of the fixing plate (703); and a plug-in block (708) is fixedly connected to the bottom of the fixing plate (703) and below the through slot (704).

9. The high-rise lobby decorative ceiling installation structure according to claim 8, characterized in that: The A-shaped card (706) is sleeved on the outside of the connecting keel (4), and the plug-in block (708) is plugged between the A-shaped card (706) and the connecting keel (4). The left and right sides of the bottom of the A-shaped card (706) are fixedly connected with second plug-in hooks (707), and the second plug-in hooks (707) are interlocked with the first plug-in hooks (9).

10. A method for installing a high-rise lobby decorative ceiling installation structure, used to implement a high-rise lobby decorative ceiling installation structure as claimed in any one of claims 1 to 9, characterized in that: S1: First, fix the fixing block (501) to the ceiling by nailing, then screw the first suspension rod (502) into the bottom of the fixing block (501) and fix it with the fourth fastening bolt (514), then screw the threaded sleeve (503) onto the lower end of the first suspension rod (502), and screw the upper end of the second suspension rod (504) into the lower end of the threaded sleeve (503), then sleeve the first fastening bolt (510), the third fastening bolt (512) and the connecting plate (513) onto the lower end of the second suspension rod (504), and screw the first fastening bolt (510) upward; S2: Then, the height of the connecting plate (513) is limited by the third fastening bolt (512), and then the second fastening bolt (511) is screwed in to fix the connecting plate (513), and then the main keel (1) is sleeved into the first U-shaped clip (505), and then the second U-shaped clip (506) is clamped on the other side of the main keel (1) to support the main keel (1), and then the first fastening bolt (510) is rotated to push the second U-shaped clip (506) upward to provide secondary support for the main keel (1), and then the first U-shaped clip (505) and the second U-shaped clip (506) are fixed together by the tension bolt (509); S3: Then, the first clamping block (602) and the second clamping block (609) are installed into the interior of the secondary keel (2) and are limited by the second clamping protrusion (3), and then the first connecting strip (601) is sleeved on the main keel (1) along the end of the main keel (1), and the clamping plate (611) and the first connecting strip (601) are limited by the first clamping tooth (605), and then the second connecting strip (608) is moved along the interior of the secondary keel (2) so that it fits with the main keel (1), and at the same time, the hook (604) is clamped in the buckle groove (612) to limit the second connecting strip (608), and then the clamping plate (611) and the second connecting strip (608) are fixed together by the fifth fastening bolt (607), thereby completing the connection between the main keel (1) and the secondary keel (2); S4: The A-shaped clip (706) is sleeved on the outside of the connecting keel (4) so ​​that the second connecting hook (707) and the first connecting hook (9) are interlocked. At this time, a gap is left between the top of the A-shaped clip (706) and the connecting keel (4) for the plug-in block (708) to enter. Then, the side plate (701) is moved along the length direction of the connecting keel (4) so ​​that the plug-in block (708) is inserted into the left gap. During the movement, the second hooking tooth (705) will deform to fit the bottom surface of the hanging plate (702). When the side plate (701) and the secondary keel (2) are fitted, the second hooking tooth (705) will restore its deformation to limit the position of the side plate (701).

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