An assembled stepped ceiling structure and its installation method

Abstract

The present invention belongs to the technical field of building decoration, and particularly relates to an assembled stepped ceiling structure and an installation method thereof. By designing a clamping member, the vertical frame board is firmly connected to the low-level decorative board, enhancing stability and ensuring the safety of the stepped ceiling during installation. At the same time, it effectively avoids excessive gaps or exposed installation gaps between the stepped ceilings, which helps to further reduce the construction difficulty and improve the installation efficiency while ensuring the aesthetic appearance of the stepped ceiling. By designing fasteners with different appearance effects, it can meet different aesthetic and diverse appearance design requirements and can be adapted to the clamping member, with good flexibility and wide application range. The installation of the fasteners adopts a snap-together splicing method for final assembly, which is convenient to operate and does not affect the installation of other components in the stepped ceiling structure. By setting the snap-together splicing structure of the clamping member and the fastener, the installation of the stepped ceiling structure can be completed only by lifting and inserting, except for a small amount of nail-fixing operations, further improving the installation efficiency.

Description

Technical Field

[0001] The present invention belongs to the technical field of building decoration, and particularly relates to a prefabricated stepped ceiling structure and an installation method thereof. Background Art

[0002] A ceiling refers to a kind of decoration for the top decoration of a house living environment. Simply put, it refers to the decoration of the ceiling and is one of the important parts of interior decoration. The ceiling has the functions of heat preservation, heat insulation, sound insulation, and sound absorption, and is also a concealed layer for projects such as electrical, ventilation and air conditioning, communication, fire prevention, and alarm pipeline equipment. A stepped ceiling, also called a two-level, three-level or multi-level ceiling, means that the ceiling planes in the same indoor space are at different heights, so that the ceiling layer presents different height differences, thus making the structure of the indoor ceiling three-dimensional.

[0003] In the prior art, a vertical frame board is usually arranged between the high-level decorative board and the low-level decorative board, and most of them adopt lamp groove lines to realize the connection and fixation between the vertical frame board and the low-level decorative board. For example, Patent CN114197731A provides a lamp groove stepped ceiling assembly, including a high-level board, a low-level board, a stepped board, and a lamp groove line. The top end of the stepped board is connected to the high-level board, the lamp groove line is connected to the bottom end of the stepped board and the low-level board, and a lamp groove is arranged in the lamp groove line. The high-level board and the stepped board are connected by a stepped line in a snap-fit manner, and the lamp groove line is connected to the bottom end of the stepped board and the low-level board by a snap-fit manner. In its technical solution, the stepped board and the low-level board are connected by a lamp groove line, and the high-level board and the stepped board are connected by a stepped line, so as to realize simple and convenient ceiling installation, environmentally friendly materials, and simple materials.

[0004] However, with the continuous development of LED lighting technology, the size of lighting equipment is getting smaller and smaller, and it is no longer necessary to reserve lamp troughs for installing lamps. At the same time, the aesthetic and life needs of modern people are constantly improving, and the interior decoration style has begun to tend to be simple and elegant. Designers are increasingly inclined to reduce the visual interference of the stepped ceiling through the design without lamp troughs to improve the neatness and aesthetics of the entire interior space. In the stepped ceiling structure without lamp troughs, due to the lack of technology for connecting the vertical frame board with the low-position decorative panel, the connection between the vertical frame board and the low-position decorative panel is not strong enough, and it is easy to loosen and fall off, which increases safety hazards and increases construction difficulty and cost. In addition, since the vertical frame board has a certain thickness and the lack of technology for connecting the vertical frame board with the low-position decorative panel, it is difficult to achieve a seamless connection between the vertical frame board and the low-position decorative panel. The gap between the vertical frame board and the low-position decorative panel is too large, and the aesthetics deteriorates, which affects the user experience and is not conducive to the promotion and application of the above-mentioned stepped ceiling structure in the market. In addition, when the exterior designs of the corners of the vertical frame board and the low-position decorative panel are different, different accessories are required to match them to achieve the predetermined exterior effect, which places higher requirements on the connection method between the vertical frame board and the low-position decorative panel. Summary of the invention

[0005] The present invention aims to overcome the defects in the prior art of a stepped ceiling structure without a lamp trough, such as poor connection stability, looseness, difficulty in construction, inconvenience in installation, difficulty in meeting the requirements of diversified appearance effects, affecting the appearance, poor flexibility and narrow scope of application, and provides an assembled stepped ceiling structure and an installation method thereof to overcome the above defects.

[0006] In order to achieve the purpose of the above invention, the present invention is implemented by the following technical solutions:

[0007] An assembled stepped ceiling structure, comprising:

[0008] The step-down unit comprises a high-position plate, one end of which is fixed downwardly with a vertical frame plate;

[0009] A low-position plate is horizontally arranged below the step-down unit and is arranged from below the vertical frame plate toward a direction away from the high-position plate;

[0010] A clamping member, comprising an upper connecting portion for fixedly connecting to the side of the vertical frame plate and a lower connecting portion for bonding and fixing to the low-position plate, wherein a clamping groove is provided between the upper connecting portion and the lower connecting portion;

[0011] The fastener comprises a clamping portion plugged into the clamping slot, an upper abutting portion abutting against a side of the vertical frame plate facing away from the low-position plate, and a lower abutting portion abutting against the bottom surface of the low-position plate;

[0012] The trim line has one side connected to the wall and the bottom of the trim line is fixedly connected to the low-position plate.

[0013] The assembled step-down ceiling structure of the present invention includes a step-down unit. The step-down unit includes a high-level plate, and a vertical frame plate is fixedly arranged downward at one end of the high-level plate. A low-level plate is horizontally arranged below the step-down unit, and the low-level plate is arranged from the bottom of the vertical frame plate toward a direction away from the high-level plate. The assembled step-down ceiling structure of the present invention also includes a clamp. The clamp includes an upper connection part for fixed connection with the side of the vertical frame plate and a lower connection part for bonding and fixing with the low-level plate, and a clamping groove is arranged between the upper connection part and the lower connection part. The present invention designs the clamp so that the vertical frame plate and the low-level plate are firmly connected, the stability is enhanced, and the safety of the step-down ceiling during the installation process is effectively guaranteed. At the same time, it can effectively prevent the gap between the step-down ceiling from being too large or the installation gap from being exposed, which helps to further reduce the construction difficulty and improve the installation efficiency while ensuring the aesthetics of the step-down ceiling.

[0014] The assembled stepped ceiling structure of the present invention also includes a fastener. The fastener includes a snap-on portion that is plugged into a slot, an upper abutting portion that abuts against the side of the vertical frame plate that is away from the low-level plate, and a lower abutting portion that abuts against the bottom surface of the low-level plate. The present invention designs fasteners with different appearance effects to meet different aesthetic and diversified appearance design requirements, and the fasteners can be adapted to the fasteners, have good flexibility, enhance user experience, and have a wide range of applications. In addition, the fastener installation of the present invention adopts a snap-on splicing method for final assembly, which is easy to operate and does not affect the installation of other stepped ceiling structures, and has strong practicality. The assembled stepped ceiling structure of the present invention also includes a trim line. One side of the trim line is assembled and connected to the wall, and the bottom of the trim line is fixedly connected to the low-level plate. The present invention connects the low-level plate to the wall by designing the trim line, which helps to enhance the assembly stability of the stepped ceiling structure.

[0015] Preferably, the high-position plate and the vertical frame plate are fixedly connected by bolts.

[0016] The bolted connection method helps to enhance the connection stability between the high-position plate and the vertical frame plate, effectively avoiding the phenomenon of loosening and falling off between the two. At the same time, the bolted connection method is conducive to convenient construction, effectively shortening the construction period and improving installation efficiency. In addition, the bolted connection method is easy to disassemble, which is helpful for the maintenance or modification of the drop ceiling in the later stage.

[0017] Preferably, the vertical frame plate includes a receiving plate arranged below the high-position plate and connected thereto, and a plurality of mounting parts for receiving the step-down units are arranged at the bottom of the receiving plate.

[0018] As a further preference, the receiving plate and the high-position plate are fixedly connected by bolts.

[0019] Preferably, the vertical frame board further includes a support board disposed below the receiving board. An inclined portion is provided at one end of the support board close to the receiving board. An upper mounting hole and a lower mounting hole are provided on the mounting member. When a bolt passes through the lower mounting hole, the mounting member is fixedly connected to the inclined portion.

[0020] Further preferably, a suspension rod with one end fixedly connected to the ceiling is further provided above the high-level board. The other end of the suspension rod passes through the upper mounting hole of the mounting member and is fixed by a nut.

[0021] Through the above settings, it helps to firmly connect the high-level board and the vertical frame board while lifting the high-level board and the vertical frame board together and hanging them below the ceiling. Setting multiple suspension rods can disperse the load of the hanging points, which is beneficial to further enhancing the overall stability of the stepped ceiling. At the same time, lifting the high-level board and the vertical frame board helps to increase the utilization rate of the indoor space and facilitates the later maintenance of the stepped ceiling. In addition, the length of the suspension rod can be freely adjusted according to needs, so as to ensure the uniformity of the ceiling height and convenient construction.

[0022] Preferably, a plurality of fixing holes are provided on the upper connecting portion. When a bolt passes through the fixing holes, the upper connecting portion is fixed to the side surface of the vertical frame board.

[0023] By providing a plurality of fixing holes on the upper connecting portion of the clamping member, the upper connecting portion of the clamping member is fixed to the side surface of the vertical frame board by means of bolt connection. Thus, the connection between the vertical frame board and the clamping member is firm, the stability is enhanced, and the safety during the installation of the stepped ceiling is further improved.

[0024] Preferably, the cross-section of the card slot is in an arc structure.

[0025] Preferably, the cross-section of the fastener is any one of a W-shaped structure, a right-angle structure, and an arc-shaped structure.

[0026] By providing a card slot with an arc structure, the clamping portion of the fastener is inserted and matched with the card slot, with good adaptability. Only by lifting and inserting can the installation of the fastener be completed, effectively improving the installation efficiency. At the same time, the installation of the fastener adopts a snap-together splicing method for final assembly, which is convenient to operate and does not affect the installation of other accessories in the stepped ceiling structure, with strong practicability. In addition, designing fasteners with different appearance effects is beneficial to meeting different aesthetic and diverse appearance design requirements while being adapted to the clamping member, with good flexibility and wide application range, which helps to further improve the user experience and enhance the beauty of the stepped ceiling structure.

[0027] Preferably, the edge trim line includes a connecting wall board arranged longitudinally, and the connecting wall board is fixedly connected to the wall.

[0028] As a further preferred embodiment, the wall connecting plate is fixedly connected to the wall by fasteners, which are any one of bolts, screws and rivets.

[0029] The above arrangement is helpful to enhance the connection firmness between the wall connecting plate and the wall. At the same time, it enables the wall connecting plate to have a certain supporting and protective effect on the side connecting plate and the low-position plate, further improving the overall stability of the stepped ceiling.

[0030] Preferably, the trim line further comprises a side connecting plate arranged on the side of the wall connecting plate, and the bottom of the side connecting plate is fixedly connected to the low-position plate.

[0031] As a further preferred embodiment, the bottom of the side connecting plate is fixedly connected to the lower plate by a fastener, which is any one of a bolt, a screw, and a rivet.

[0032] The above arrangement helps to enhance the connection stability between the side connecting plate and the low-position plate, and further improves the overall firmness, stability and load-bearing capacity of the drop-step ceiling. In addition, the side connecting plate is connected with the wall plate and the low-position plate to form an overall edge-finishing effect, making the appearance of the drop-step ceiling more beautiful and neat. At the same time, the side connecting plate can effectively resist vibration and impact, and effectively prevent the drop-step ceiling from loosening and deformation due to long-term use.

[0033] A method for installing the assembled stepped ceiling structure as described above comprises the following steps:

[0034] S1: Install and connect the high-level board and the vertical frame board;

[0035] S2: Assemble the clamps and fix the upper connecting part of the clamps to the side of the vertical frame plate;

[0036] S3: Lift the low-level plate upward, adhere one end of the low-level plate to the lower connecting part of the clamp, connect the wall connecting plate of the edge trim to the wall through fasteners, and nail the other end of the low-level plate upward to the side connecting plate of the edge trim;

[0037] S4: Install the fastener, insert the fastener's clamping part into the clamping slot of the fastener, so that the upper abutting part of the fastener abuts against the side of the vertical frame plate away from the low-position plate, and the lower abutting part of the fastener abuts against the bottom surface of the low-position plate.

[0038] Therefore, the present invention has the following beneficial effects:

[0039] (1) The present invention uses the design of the clips to ensure a firm connection between the vertical frame plate and the low-position decorative panel, which enhances stability and effectively ensures the safety of the stepped ceiling during installation. At the same time, it can effectively prevent the gap between the stepped ceiling from being too large or the installation gap from being exposed, which helps to further reduce the construction difficulty and improve the installation efficiency while ensuring the aesthetics of the stepped ceiling;

[0040] (2) The present invention designs fasteners with different appearance effects to meet different aesthetic and diversified appearance design requirements and can be adapted to the card parts, with good flexibility, enhanced user experience and a wide range of applications. In addition, the fasteners of the present invention are installed by snap-on splicing, which is easy to operate and does not affect the installation of other drop-level ceiling structures, and is highly practical;

[0041] (3) The present invention provides a snap-fitting structure of the clips and fasteners, so that the installation of the drop ceiling structure only requires lifting and plugging, except for a small amount of nailing and fixing operations, and the installation efficiency is further improved;

[0042] (4) The assembled stepped ceiling without lamp trough of the present invention has a simple structure, is easy and quick to install, and has a low cost, which is conducive to promotion and application in production practice. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 This is the assembly diagram of the assembled stepped ceiling structure.

[0044] Figure 2 It is a schematic diagram of the cross-sectional structure of the card.

[0045] Figure 3 It is a schematic diagram of the cross section of a fastener with a W-shaped cross section.

[0046] Figure 4 It is a schematic diagram of the cross section of a fastener with a right-angle structure.

[0047] Figure 5 It is a schematic diagram of the cross section of a fastener with an arc-shaped cross section.

[0048] Figure 6 It is a schematic diagram of the assembly structure of fasteners and clamps.

[0049] Figure 7 It is a structural schematic diagram of the step-down unit.

[0050] Figure 8 This is a schematic diagram of the structure of the edge lines.

[0051] In the figure: step-down unit 1; high-level plate 2; vertical frame plate 3; low-level plate 4; clamp 5; upper connecting part 6; lower connecting part 7; clamping groove 8; fastener 9; clamping part 10; upper abutting part 11; lower abutting part 12; edge line 13; receiving plate 14; mounting part 15; support plate 16; inclined part 17; upper mounting hole 18; lower mounting hole 19; fixing hole 20; wall connecting plate 21; side connecting plate 22; suspension rod 23. DETAILED DESCRIPTION

[0052] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments of the specification. Those of ordinary skill in the art will be able to implement the present invention based on these descriptions. In addition, the embodiments of the present invention involved in the following description are generally only embodiments of a part of the present invention, rather than all embodiments. Therefore, based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative work should fall within the scope of protection of the present invention.

[0053] Example

[0054] In this embodiment, an assembled stepped ceiling structure is provided.

[0055] like Figure 1-8 As shown, the assembled step-down ceiling structure of the present invention includes a step-down unit 1. The step-down unit 1 includes a high-level plate 2, and a vertical frame plate 3 is fixedly arranged downward at one end of the high-level plate 2. A low-level plate 4 is horizontally arranged below the step-down unit 1, and the low-level plate 4 is arranged from the bottom of the vertical frame plate 3 toward a direction away from the high-level plate 2. The assembled step-down ceiling structure of the present invention also includes a clamp 5. The clamp 5 includes an upper connecting portion 6 for fixedly connecting to the side of the vertical frame plate 3 and a lower connecting portion 7 for bonding and fixing to the low-level plate 4, and a clamping groove 8 is arranged between the upper connecting portion 6 and the lower connecting portion 7. The present invention designs the clamp 5 so that the vertical frame plate 3 and the low-level plate 4 are firmly connected, the stability is enhanced, and the safety of the step-down ceiling during the installation process is effectively guaranteed. At the same time, it can effectively avoid the gap between the step-down ceilings being too large or the installation gap being exposed, which helps to further reduce the construction difficulty and improve the installation efficiency while ensuring the aesthetics of the step-down ceiling.

[0056] The assembled drop-level ceiling structure of the present invention also includes a fastener 9. The fastener 9 includes a snap-on portion 10 that is plugged into the card slot 8, an upper abutting portion 11 that abuts against the side of the vertical frame plate 3 that is away from the low-level plate 4, and a lower abutting portion 12 that abuts against the bottom surface of the low-level plate 4. The present invention designs fasteners 9 with different appearance effects to meet different aesthetic and diversified appearance design requirements, and it can be adapted to the card 5, has good flexibility, enhanced user experience, and a wide range of applications. In addition, the fastener 9 of the present invention is installed by snap-on splicing and finally assembled, which is easy to operate and does not affect the installation of other drop-level ceiling structures, and is highly practical. The assembled drop-level ceiling structure of the present invention also includes a trimming line 13. One side of the trimming line 13 is assembled and connected to the wall, and the bottom of the trimming line 13 is fixedly connected to the low-level plate 4. The present invention connects the low-level plate 4 to the wall by designing the trimming line 13, which helps to enhance the assembly stability of the drop-level ceiling structure.

[0057] The high-position plate 2 and the vertical frame plate 3 are fixedly connected by bolts.

[0058] Adopting the bolt - fixed connection method helps to enhance the connection stability between the high - level board 2 and the vertical frame board 3, effectively avoiding the phenomenon of connection loosening and falling off between the two. At the same time, the bolt - connection method is conducive to convenient construction, effectively shortening the construction period and improving the installation efficiency. In addition, the bolt - connection method is convenient for disassembly, which helps to maintain or modify the stepped ceiling in the later stage.

[0059] The vertical frame board 3 includes a bearing plate 14 arranged below the high - level board 2 and connected thereto. A number of installation parts 15 for bearing the stepped unit 1 are arranged at the bottom of the bearing plate 14.

[0060] As another implementation method, the bearing plate 14 and the high - level board 2 are fixedly connected by bolts.

[0061] The vertical frame board 3 further includes a support plate 16 arranged below the bearing plate 14. An inclined part 17 is arranged at one end of the support plate 16 close to the bearing plate 14. An upper installation hole 18 and a lower installation hole 19 are arranged on the installation part 15. When the bolt passes through the lower installation hole 19, the installation part 15 is fixedly connected to the inclined part 17.

[0062] As another implementation method, a suspension rod 23 with one end fixedly connected to the ceiling is further arranged above the high - level board 2. The other end of the suspension rod 23 passes through the upper installation hole 18 of the installation part 15 and is fixed by a nut.

[0063] Through the above settings, it helps to firmly connect the high - level board 2 and the vertical frame board 3 while lifting the high - level board 2 and the vertical frame board 3 together and hanging them under the ceiling. Setting multiple suspension rods 23 can disperse the load of the suspension points, which is beneficial to further enhancing the overall stability of the stepped ceiling. At the same time, lifting the high - level board 2 and the vertical frame board 3 helps to increase the utilization rate of the indoor space and is convenient for maintaining the stepped ceiling in the later stage. In addition, the length of the suspension rod 23 can be freely adjusted according to needs, so as to ensure the unity of the ceiling height and convenient construction.

[0064] A number of fixing holes 20 are arranged on the upper connecting part 6. When the bolt passes through the fixing holes 20, the upper connecting part 6 is fixed to the side surface of the vertical frame board 3.

[0065] By arranging a number of fixing holes 20 on the upper connecting part 6 of the clamping part 5, the upper connecting part 6 of the clamping part 5 is fixed to the side surface of the vertical frame board 3 by means of bolt connection. Thus, the connection between the vertical frame board 3 and the clamping part 5 is firm, the stability is enhanced, and the safety of the stepped ceiling during installation is further improved.

[0066] The cross - section of the card slot 8 is in an arc - shaped structure.

[0067] The cross - section of the fastener 9 is in a W - shaped structure.

[0068] As another implementation method, the cross - section of the fastener 9 is in a right - angled structure.

[0069] As another embodiment, the cross-section of the fastener 9 is in an arc-shaped structure.

[0070] By providing a clamping groove 8 with an arc-shaped cross-section, the clamping portion 10 of the fastener 9 is inserted and fitted with the clamping groove 8, which has good adaptability. The installation of the fastener 9 can be completed only by lifting and inserting, effectively improving the installation efficiency. At the same time, the fastener 9 is finally assembled by a snap-together splicing method, which is convenient to operate and does not affect the installation of other accessories in the stepped ceiling structure, and has strong practicability. In addition, designing fasteners 9 with different appearance effects is beneficial to meet different aesthetic and diverse appearance design requirements while being adapted to the clamping members 5, with good flexibility and wide application range, which helps to further enhance the user experience and enhance the beauty of the stepped ceiling structure.

[0071] The edge trim line 13 includes a wall connecting board 21 arranged longitudinally, and the wall connecting board 21 is fixedly connected to the wall.

[0072] As another embodiment, the wall connecting board 21 is fixedly connected to the wall through a fastener. The fastener is any one of bolts, screws, and rivets.

[0073] Through the above settings, it is beneficial to enhance the connection firmness between the wall connecting board 21 and the wall. At the same time, the wall connecting board 21 plays a certain supporting and protecting role for the side connecting board 22 and the low-position board 4, further improving the overall stability of the stepped ceiling.

[0074] The edge trim line 13 further includes a side connecting board 22 arranged on the side of the wall connecting board 21, and the bottom of the side connecting board 22 is fixedly connected to the low-position board 4.

[0075] As another embodiment, the bottom of the side connecting board 22 is fixedly connected to the low-position board 4 through a fastener. The fastener is any one of bolts, screws, and rivets.

[0076] Through the above settings, it helps to enhance the connection stability between the side connecting board 22 and the low-position board 4, further improving the overall firmness, stability, and load-bearing capacity of the stepped ceiling. In addition, the side connecting board 22 is connected to the wall connecting board 21 and the low-position board 4 to form an overall edge trim effect, making the appearance of the stepped ceiling more beautiful and tidy. At the same time, the side connecting board 22 can effectively resist vibration and impact, effectively avoiding problems such as loosening and deformation of the stepped ceiling due to long-term use.

[0077] In this embodiment, an installation method for an assembled stepped ceiling structure is also provided.

[0078] An installation method for an assembled stepped ceiling structure as described above specifically includes the following steps:

[0079] S1: Install the high-position board 2 and the vertical frame board 3 and fixedly connect them with bolts;

[0080] S2: Assemble the clamp 5, fix the upper connecting portion 6 of the clamp 5 to the side of the vertical frame plate 3 by bolts, and then apply glue on the bottom surface of the lower connecting portion 7 of the clamp 5;

[0081] S3: Lift the lower plate 4 and glue one end of the lower plate 4 to the bottom surface of the lower connecting portion 7 of the clamp 5. Connect the wall connecting plate 21 of the trim line 13 to the wall with fasteners, which can be any one of bolts, screws, and rivets. Nail the other end of the lower plate 4 upward to the side connecting plate 22 of the trim line 13;

[0082] S4: Install the fastener 9, insert the clamping portion 10 of the fastener 9 into the clamping slot 8 of the clamp 5, so that the upper abutting portion 11 of the fastener 9 abuts against the side of the vertical frame plate 3 facing away from the low-position plate 4, and the lower abutting portion 12 of the fastener 9 abuts against the bottom surface of the low-position plate 4.

[0083] The above description is only a detailed description of the preferred embodiments and principles of the present invention. For ordinary technicians in this field, according to the ideas provided by the present invention, there will be changes in the specific implementation methods, and these changes should also be regarded as the protection scope of the present invention.

Claims

1. An assembled stepped ceiling structure, characterized in that, include: A step-down unit (1) comprises a high-position plate (2), one end of the high-position plate (2) being fixedly provided with a vertical frame plate (3) downwardly; A low-position plate (4) is horizontally arranged below the step-down unit (1) and is arranged from below the vertical frame plate (3) in a direction away from the high-position plate (2); A clamping member (5) comprising an upper connecting portion (6) for fixedly connecting to a side surface of the vertical frame plate (3) and a lower connecting portion (7) for bonding and fixing to the lower plate (4), wherein a clamping groove (8) is provided between the upper connecting portion (6) and the lower connecting portion (7); A fastener (9), comprising a clamping portion (10) pluggably engaged with the clamping slot (8), an upper abutting portion (11) abutting against a side of the vertical frame plate (3) facing away from the low-position plate (4), and a lower abutting portion (12) abutting against the bottom surface of the low-position plate (4); A trim line (13), one side of which is assembled and connected to the wall, and the bottom of the trim line (13) is fixedly connected to the low-position plate (4); The high-position plate (2) and the vertical frame plate (3) are fixedly connected by bolts; The edge trim (13) comprises a longitudinally arranged wall connecting plate (21), wherein the wall connecting plate (21) is fixedly connected to the wall; The edge trim (13) further comprises a side connecting plate (22) arranged on the side of the wall connecting plate (21), and the bottom of the side connecting plate (22) is fixedly connected to the low-position plate (4).

2. The prefabricated stepped ceiling structure according to claim 1, characterized in that, The vertical frame plate (3) comprises a receiving plate (14) arranged below the high-position plate (2) and connected thereto, and a plurality of mounting parts (15) for receiving the step-down unit (1) are arranged at the bottom of the receiving plate (14).

3. The prefabricated stepped ceiling structure according to claim 2, wherein The frame plate (3) further comprises a support plate (16) arranged below the receiving plate (14); an inclined portion (17) is arranged at one end of the support plate (16) close to the receiving plate (14); an upper mounting hole (18) and a lower mounting hole (19) are arranged on the mounting member (15); when a bolt passes through the lower mounting hole (19), the mounting member (15) is fixedly connected to the inclined portion (17).

4. A fabricated stepped ceiling structure according to claim 1, characterized in that, The upper connecting portion (6) is provided with a plurality of fixing holes (20), and when the bolts pass through the fixing holes (20), the upper connecting portion (6) is fixed to the side surface of the vertical frame plate (3).

5. A fabricated stepped ceiling structure according to claim 1, wherein, The cross section of the clamping slot (8) is an arc-shaped structure.

6. A fabricated stepped ceiling structure according to claim 1, characterized in that, The cross section of the fastener (9) is any one of a W-shaped structure, a right-angle structure, and an arc-shaped structure.

7. An installation method of the assembled stepped ceiling structure according to any one of claims 1-6, characterized in that The following steps are involved: S1: Install and connect the high-position plate (2) and the vertical frame plate (3); S2: Assembling the clamp (5) and fixing the upper connecting portion (6) of the clamp (5) to the side surface of the vertical frame plate (3); S3: Lift the lower plate (4), adhere one end of the lower plate (4) to the lower connecting portion (7) of the clamp (5), fix the wall connecting plate (21) of the edge trim (13) to the wall through fasteners, and nail the other end of the lower plate (4) to the side connecting plate (22) of the edge trim (13) upwards; S4: Install the fastener (9), insert the engaging portion (10) of the fastener (9) into the engaging groove (8) of the engaging member (5), so that the upper abutting portion (11) of the fastener (9) abuts against the side of the vertical frame plate (3) facing away from the lower plate (4), and the lower abutting portion (12) of the fastener (9) abuts against the bottom surface of the lower plate (4).

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