Fabricated color steel plate and gypsum board composite suspended ceiling

Abstract

The utility model relates to the technical field of assembly type buildings, and discloses an assembly type color steel plate gypsum board composite suspended ceiling which comprises two assembly type wallboards and is characterized in that two color steel plates are installed on the tops of the two assembly type wallboards, U-shaped clamping grooves are formed in the opposite sides of the two color steel plates, and the U-shaped clamping grooves are connected with the two assembly type wallboards. The two U-shaped clamping grooves correspond to the two assembly type wallboards, and XPS waterproof buffering rubber strips are installed between the two U-shaped clamping grooves and the two assembly type wallboards. Through the design of the bent buckling edge and the self-locking lap joint, a keel does not need to be used, the installation process is greatly simplified, the process of a single person is reduced by 30%, the installation efficiency is effectively improved, and the labor cost is reduced; meanwhile, the cost is reduced by 40%, the overall manufacturing cost is remarkably reduced on the premise that the quality of the suspended ceiling is guaranteed, and in the aspect of bearing, a composite bearing structure and a color steel plate are adopted to bear main loads, and a gypsum board is adopted to disperse stress, so that the deflection of a system is reduced, the stability and durability of the suspended ceiling are enhanced, and the fireproof performance is upgraded.

Description

Technical Field

[0001] This utility model relates to the field of prefabricated building technology, specifically to a prefabricated color steel plate and gypsum board composite ceiling. Background Technology

[0002] In the field of architectural decoration, as an important decorative and functional component of the interior space ceiling, the performance and installation method of the ceiling have always been a focus of attention in the industry.

[0003] Existing ceiling installation methods typically involve first measuring and marking lines to determine the height and keel position for the gypsum board ceiling, installing the hangers, then installing the main and secondary keels in sequence, and finally fixing the gypsum board with self-tapping screws and treating the joints. For integrated ceilings, the first step is to measure and design, install the edge trim, then install the hangers and triangular keels, install the electrical modules, insert the integrated panels, and check and adjust them. Wooden ceilings require the wood to be dried, treated for corrosion and fire resistance, and can be installed using wood or light steel keels. Afterwards, the wooden boards are spliced, and the surface is sanded and painted. However, the above ceiling installation methods often rely on the keel structure. Keel installation is not only complex, requiring multiple people to work together, consuming significant manpower and time costs, but also demands high technical skills from the construction workers. From a labor cost perspective, the multiple processes and the need for multiple people result in high overall installation costs. In terms of time costs, the construction and adjustment of the keel takes a long time, extending the construction period. Furthermore, the material cost of the keel itself and the losses during installation further increase the total cost of the ceiling. Utility Model Content

[0004] The purpose of this utility model is to provide a prefabricated color steel plate and gypsum board composite ceiling, which solves the problems of the background technology that relies on keel structure, which not only involves complicated procedures, requires multiple people to work together, consumes a lot of manpower and time costs, but also requires high technical skills from construction personnel.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A prefabricated color steel plate and gypsum board composite ceiling includes two prefabricated wall panels. Two color steel plates are installed on the top of each of the two prefabricated wall panels. U-shaped slots are provided on the opposite sides of the two color steel plates. The two U-shaped slots correspond to the two prefabricated wall panels. XPS waterproof buffer strips are installed between the two U-shaped slots and the two prefabricated wall panels. A self-locking overlap structure is provided between the two color steel plates. Gypsum board backing is installed on the top of each of the two color steel plates.

[0007] Preferably, the self-locking panel overlap structure includes stepped tenons and grooves respectively fixed to the top of two color steel plates, wherein the stepped tenons and grooves interlock with each other, and the height of the stepped tenons is 1.5 to 2 times the thickness of the color steel plates.

[0008] Preferably, the stepped tenon and the groove are fixed by a plurality of self-tapping screws, the spacing between the plurality of self-tapping screws is 300mm, and the pre-drilled hole diameter of the plurality of self-tapping screws is 3.5mm.

[0009] Preferably, both U-shaped slots are the snap-fit ​​edges of color steel plates, the snap-fit ​​edges are bent at an angle of 90°, and the XPS waterproof buffer strip is a rubber sealing strip, which is disposed on the inner side of the snap-fit ​​edges.

[0010] Preferably, an elastic adhesive layer is provided between the gypsum board backing and the color steel plate, and the adhesive thickness of the elastic adhesive layer is 0.5 to 1 mm.

[0011] Compared with the prior art, the beneficial effects achieved by this utility model are:

[0012] This utility model, through its bent and interlocking edge design and self-locking overlap, eliminates the need for a keel, greatly simplifying the installation process. The number of steps required by a single person is reduced by 30%, effectively improving installation efficiency and lowering labor costs. Simultaneously, costs are reduced by 40%, significantly lowering the overall cost while ensuring ceiling quality. In terms of load-bearing capacity, a composite load-bearing structure is adopted, with the color steel plate bearing the main load and the gypsum board dispersing stress, reducing system deflection and enhancing the stability and durability of the ceiling. Fire resistance is upgraded; the application of gypsum board backing ensures the system's fire resistance limit is ≥1 hour (GB / T 9978.1 test), meeting the stringent fire safety requirements of modern buildings and providing more reliable protection for people's lives and property. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the self-locking plate overlapping structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the color steel plate of this utility model;

[0016] Figure 4 This is a schematic diagram of the U-shaped card slot of this utility model.

[0017] The components include: 1. Color steel plate; 2. Self-locking panel overlap structure; 3. Gypsum board backing; 4. Prefabricated wall panel; 5. XPS waterproof buffer strip; 6. Stepped tenon; 7. Groove. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please refer to Figures 1-4 A prefabricated color steel plate and gypsum board composite ceiling includes two prefabricated wall panels 4, each with two color steel plates 1 installed on its top. U-shaped slots are provided on the opposite sides of each color steel plate 1, corresponding to the two prefabricated wall panels 4. XPS waterproof buffer strips 5 are installed between the two U-shaped slots and the two prefabricated wall panels 4. A self-locking plate overlapping structure 2 is provided between the two color steel plates 1, and gypsum board backing 3 is installed on the top of each color steel plate 1. The self-locking plate overlapping structure 2 includes stepped tenons 6 and grooves 7 respectively fixed to the top of the two color steel plates 1. The stepped tenons 6 and grooves 7 interlock, and the height of the stepped tenons 6 is 1.5 to 2 times the thickness of the color steel plate 1.

[0020] Furthermore, the stepped tenon 6 and the groove 7 are fixed together by multiple self-tapping screws, the spacing between the multiple self-tapping screws is 300mm, and the pre-drilled hole diameter of the multiple self-tapping screws is 3.5mm.

[0021] Furthermore, both U-shaped slots are the snap-fit ​​edges of the color steel plate 1, with a bending angle of 90°. The XPS waterproof buffer strip 5 is a rubber sealing strip, which is set on the inside of the snap-fit ​​edge.

[0022] Furthermore, an elastic adhesive layer is provided between the gypsum board backing 3 and the color steel plate 1, and the adhesive thickness of the elastic adhesive layer is 0.5 to 1 mm.

[0023] Among them, the color steel plate 1 is the main load-bearing layer. The material of the color steel plate 1 is 0.5-0.8mm thick aluminum zinc coated steel plate (AZ150, double-sided coating ≥20μm). The surface of the color steel plate 1 is fluorocarbon sprayed (thickness ≥25μm). The corrosion resistance level is ASTM B117 salt spray test ≥1000 hours. The bending process of the color steel plate 1 is long side bending (interlocking edge). It adopts CNC bending machine, bending angle 105°, bending length 15mm (matching the wall panel slot). In addition, a 10mm straight edge is reserved on the short side to avoid stress concentration during installation.

[0024] Gypsum board backing 3 is also a gypsum board backing layer, and its specifications are 12mm thick fire-resistant gypsum board (GB / T9775-2008, fire performance A1 grade), with a density ≤850kg / m³. 3 Moisture content ≤2%;

[0025] The adhesive is a two-component epoxy resin adhesive, with component A being epoxy resin and component B being a polyamide curing agent. The mixing ratio of epoxy resin and polyamide curing agent is 1:1, and the curing time is ≤30 minutes (25℃).

[0026] The gypsum board is 5mm smaller on the shorter side than the color steel plate 1, with an expansion joint reserved, and the longer side is aligned with the color steel plate 1.

[0027] The self-locking plate structure has the following parameters for the stepped tenon 6 and groove 7: Stepped tenon 6 height: 2 times the plate thickness, stepped interlocking overlap: ≥8mm to ensure sealing.

[0028] Screw fixing points: self-tapping screws (300mm spacing), pre-drilled holes with a diameter of 3.5mm to prevent cracking of the color steel plate 1;

[0029] The installation process of this utility model is as follows:

[0030] The top of the pre-assembled wall panel 4 has a 15mm deep groove (to match the interlocking edge of the color steel plate 1), and a 5mm thick XPS rubber strip (20% compression rate) is pasted inside the groove.

[0031] Color steel plate 1 - gypsum board composite color steel plate 1 back adhesive coating: adopt the dot coating method, the glue dot spacing is 150mm×150mm, the single dot diameter is 10mm, and the thickness is 0.8mm; gypsum board pressing: use a vacuum suction cup to lift the gypsum board, align it with the color steel plate 1 and then apply pressure (0.1MPa, hold pressure for 10 minutes);

[0032] Ceiling module installation: Position the first panel, insert the interlocking edge of the color steel plate 1 into the wall panel slot, press down until the rubber strip is compressed into place, use a rubber hammer to tap lightly for assistance, and use a laser level to calibrate the flatness, with an error ≤2mm / 2m; For the self-locking overlap of adjacent panels, tilt the second color steel plate 1 at 30°, align the stepped tenon 6 with the groove 7 of the first panel, and push it horizontally until it is fully engaged. A "click" sound should be heard when it is engaged. Use an electric screwdriver to drive the self-tapping screws horizontally into the pre-drilled holes at the overlap, with the screw head sinking into the panel surface ≤0.5mm; End finishing: After the end color steel plate 1 is cut, add an L-shaped edge trim strip to the bent edge, using 1mm thick stainless steel, and fix it with structural adhesive;

[0033] Joint treatment: Apply neutral silicone sealant to the joint of the color steel plate 1. The silicone sealant should be 5mm wide and 3mm thick. Move the glue gun at a constant speed to avoid air bubbles.

[0034] The overall working principle of this utility model is as follows:

[0035] Two prefabricated wall panels 4 are topped with color steel plates 1. U-shaped grooves are provided on the opposite sides of the color steel plates 1, serving as the interlocking edges. These grooves are bent at a 90° angle. XPS waterproof buffer strips 5 are installed between the U-shaped grooves and the prefabricated wall panels 4. These rubber sealing strips are located inside the interlocking edges. When indoor humidity changes cause condensation, or when rainwater seeps through the walls, the XPS waterproof buffer strips 5 effectively block further water penetration. They fill the gap between the color steel plates 1 and the prefabricated wall panels 4, forming a waterproof barrier to prevent water from entering the ceiling. To prevent damage and mold growth to the ceiling structure caused by moisture intrusion, and to mitigate the impact of minor vibrations during daily use, such as those from foot traffic and equipment operation, the XPS waterproof buffer strip 5 is elastic and absorbs and cushions these vibrations. This reduces the impact of vibrations on the connection between the color steel plate 1 and the prefabricated wall panel 4, ensuring connection stability and extending the ceiling's lifespan. The interlocking design of the stepped tenon 6 and groove 7 allows the two color steel plates 1 to be tightly connected horizontally, providing a certain level of connection strength and stability, and increasing the contact area between the color steel plates 1. It can better resist horizontal tensile and shear forces, preventing relative sliding or separation of the color steel plate 1 during use. The self-tapping screws further enhance the connection strength between the color steel plates 1. Setting the self-tapping screws at a certain interval of 300mm ensures that the two color steel plates 1 are evenly fixed together, making the connection more secure. The pre-drilled hole diameter of 3.5mm ensures that the self-tapping screws can be screwed in smoothly while providing sufficient friction between the screw and the color steel plate 1, ensuring the reliability of the connection. Through this dual connection method, the overall integrity and stability of the ceiling structure are improved. The elastic adhesive layer can hold the gypsum board backing... The 3-layer adhesive layer is firmly bonded to the color steel plate 1, forming a whole. When subjected to external forces, the two can work together to resist the external forces and reduce deformation or damage caused by uneven local stress. The elastic adhesive layer has a certain degree of elasticity and can adapt to the slight deformation of the color steel plate 1 and the gypsum board backing 3 caused by changes in environmental factors such as temperature and humidity during use. When the color steel plate 1 or the gypsum board backing 3 expands or contracts, the elastic adhesive layer can buffer this change through its own elastic deformation, avoiding loosening or cracking of the connection between the two due to excessive deformation, thus ensuring the overall aesthetics and performance of the ceiling.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A prefabricated color steel plate and gypsum board composite ceiling, comprising two prefabricated wall panels (4), characterized in that: Two color steel plates (1) are installed on the top of each of the two prefabricated wall panels (4). U-shaped slots are provided on the opposite sides of the two color steel plates (1). The two U-shaped slots correspond to the two prefabricated wall panels (4). XPS waterproof buffer strips (5) are installed between the two U-shaped slots and the two prefabricated wall panels (4). A self-locking plate overlapping structure (2) is provided between the two color steel plates (1). A gypsum board backing (3) is installed on the top of each of the two color steel plates (1).

2. The prefabricated color steel plate and gypsum board composite ceiling according to claim 1, characterized in that: The self-locking plate overlapping structure (2) includes a stepped tenon (6) and a groove (7) respectively fixed on the top of two color steel plates (1). The stepped tenon (6) and the groove (7) interlock with each other, and the height of the stepped tenon (6) is 1.5 to 2 times the thickness of the color steel plate (1).

3. The prefabricated color steel plate and gypsum board composite ceiling according to claim 2, characterized in that: The stepped tenon (6) and the groove (7) are fixed together by a plurality of self-tapping screws, the spacing between the plurality of self-tapping screws is 300mm, and the pre-drilled hole diameter of the plurality of self-tapping screws is 3.5mm.

4. The prefabricated color steel plate and gypsum board composite ceiling according to claim 1, characterized in that: Both of the U-shaped slots are the fastening edges of the color steel plate (1), the bending angle of the fastening edge is 90°, and the XPS waterproof buffer strip (5) is a rubber sealing strip, which is set on the inner side of the fastening edge.

5. The prefabricated color steel plate and gypsum board composite ceiling according to claim 1, characterized in that: An elastic adhesive layer is provided between the gypsum board backing (3) and the color steel plate (1), and the adhesive thickness of the elastic adhesive layer is 0.5-1mm.

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