Prefabricated metal roofing
By using prefabricated metal roofing structures with galvanized steel sheets and waterproof and shockproof pads, the problems of low construction efficiency and insufficient durability of traditional metal roofs are solved, achieving efficient installation and environmental adaptability, and improving safety and waterproof performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 北京国电盛通电力工程有限公司
- Filing Date
- 2025-08-04
- Publication Date
- 2026-06-30
AI Technical Summary
Traditional metal roofing is inefficient and costly to construct, lacks sufficient safety and durability, and lacks pre-assembled and modular design, making it difficult to adapt to complex environmental changes.
The prefabricated metal roof structure, including corrosion-resistant panels and a steel keel system, utilizes aluminized zinc steel sheets and waterproof and shock-absorbing pads. Through modular design and pre-assembly technology, combined with waterproof fasteners, it achieves rapid installation and efficient coordination.
It achieves efficient collaboration between factory pre-assembly and on-site welding, significantly reducing costs, shortening construction time, improving safety and durability, and enhancing environmental adaptability and waterproof performance.
Smart Images

Figure CN224431828U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building metal enclosure technology, specifically to prefabricated metal roofing. Background Technology
[0002] In the field of traditional metal roofing construction, single-pane installation is commonly used, but this model has many drawbacks. Firstly, single-pane installation requires on-site positioning and fixing of each panel, resulting in low construction efficiency, lengthy construction periods, and increased time and labor costs. Secondly, traditional metal roofing structures are deficient in terms of safety, durability, and environmental adaptability. Ordinary metal materials are susceptible to corrosion when exposed to the natural environment for extended periods, affecting the roof's lifespan and structural safety. Furthermore, traditional structures lack effective pre-assembly and modular design, making it difficult to form a cohesive working mechanism. When facing complex environmental changes, the roof's adaptability and stability are poor, and the waterproofing and seismic resistance at the joints of traditional metal roof panels need improvement. Therefore, the development of a new type of prefabricated metal roofing structure is urgently needed. Utility Model Content
[0003] In view of the above-mentioned technical problems in related technologies, this utility model provides a prefabricated metal roof, which can solve the above problems.
[0004] To achieve the above-mentioned technical objectives, the technical solution of this utility model is implemented as follows:
[0005] The prefabricated metal roof includes horizontal and vertical steel keels and corrosion-resistant panels laid on top of the horizontal and vertical steel keels. The corrosion-resistant panels include a large edge, a horizontal plate, and a small edge. The large edge and small edge of two adjacent corrosion-resistant panels overlap. Waterproof fasteners are provided at the overlap between the large edge and the small edge of the corrosion-resistant panels. The waterproof fasteners include screws, waterproof washers, matching aluminum alloy caps, and waterproof and shockproof washers. The waterproof washers and matching aluminum alloy caps are located on the upper surface of the small edge of the corrosion-resistant panels, and the waterproof and shockproof washers are located in the gap between the overlap between the large edge and the small edge of the corrosion-resistant panels. The screws pass through the waterproof washers, matching aluminum alloy caps, small edge of the corrosion-resistant panels, waterproof and shockproof washers, and large edge of the corrosion-resistant panels in sequence.
[0006] Furthermore, both the large and small ends of the corrosion-resistant plate are composed of a narrow top plate and sloping panels fixed to both sides of the narrow top strip, and the shape of the matching aluminum alloy pressure cap matches the top shape of the small end of the corrosion-resistant plate.
[0007] Furthermore, the horizontal plate has an integrally formed ribbed plate in the middle.
[0008] Furthermore, the horizontal and vertical steel keel includes a horizontal steel keel and a vertical steel keel. The bottom of the screw is threadedly connected to the horizontal steel keel, and the bottom of the corrosion-resistant plate is supported on the top surface of the horizontal steel keel.
[0009] Furthermore, steel ear plates are fixedly installed at the bottom of the horizontal steel keel by bolts, and extension plates are fixedly installed at the bottom of the steel ear plates. The surface of the extension plates has holes for steel ear plates.
[0010] Furthermore, the waterproof gasket is made of galvanized steel plate, and the waterproof and shockproof gasket is made of butyl rubber.
[0011] The beneficial effects of this utility model are as follows: The device of this application adopts a corrosion-resistant plate quick installation structure, which can realize the efficient collaboration between factory pre-assembly and on-site welding; the modular design replaces the traditional single-piece installation, which significantly reduces costs and shortens the construction period; the precise on-site processing of components ensures that the installation is completed in one go, avoiding secondary adjustments and cutting; the corrosion-resistant material and pre-assembly technology enhance the safety, durability and environmental adaptability of the roof. Attached Figure Description
[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0013] The present invention will now be described in further detail with reference to the accompanying drawings.
[0014] Figure 1 This is a structural schematic diagram of a prefabricated metal roof;
[0015] Figure 2 This is the front view of the prefabricated metal roof;
[0016] Figure 3 This is a structural diagram of a corrosion-resistant plate.
[0017] In the picture:
[0018] 1. Horizontal steel keel; 2. Longitudinal steel keel; 3. Corrosion-resistant plate; 301. Large end edge of corrosion-resistant plate; 302. Horizontal plate; 303. Raised rib plate; 304. Small end edge of corrosion-resistant plate; 4. Waterproof fasteners; 401. Waterproof gasket; 402. Matching aluminum alloy cap; 403. Waterproof and shockproof gasket; 404. Screws; 5. Steel ear plate; 6. Hole position of steel ear plate. Detailed Implementation
[0019] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.
[0020] like Figure 1-3 As shown, this utility model discloses a prefabricated metal roof, including horizontal and vertical steel keels and a corrosion-resistant plate 3 laid on top of the horizontal and vertical steel keels. The corrosion-resistant plate 3 is made of aluminized zinc-coated steel sheet, utilizing the protective effect of the aluminum oxide film and the electrochemical protection of iron by zinc, resulting in better corrosion resistance. This allows the aluminized zinc-coated steel sheet to maintain stable performance even in harsh environments such as humidity and salt spray. The corrosion-resistant plate 3 includes a large edge 301, a horizontal plate 302, and a small edge 304. The large edge 301 and the small edge 304 of two adjacent corrosion-resistant plates 3 overlap. A waterproof fastener 4 is provided at the joint between edge 301 and the small end edge 304 of the corrosion-resistant plate. The waterproof fastener 4 includes a screw 404, a waterproof gasket 401, a matching aluminum alloy cap 402, and a waterproof and shockproof gasket 403. The waterproof gasket 401 and the matching aluminum alloy cap 402 are located on the upper surface of the small end edge 304 of the corrosion-resistant plate, and the waterproof and shockproof gasket 403 is located in the gap between the large end edge 301 and the small end edge 304 of the corrosion-resistant plate. The screw 404 passes through the waterproof gasket 401, the matching aluminum alloy cap 402, the small end edge 304 of the corrosion-resistant plate, the waterproof and shockproof gasket 403, and the large end edge 301 of the corrosion-resistant plate in sequence.
[0021] Example 1: The corrosion-resistant plate 3, from left to right, includes a large edge 301, a horizontal plate 302, and a small edge 304. Both the large edge 301 and the small edge 304 are isosceles trapezoids with open lower sections. The corrosion-resistant plates 3 are laid sequentially from left to right. The small edge 304 of one corrosion-resistant plate 3 overlaps the large edge 301 of the next corrosion-resistant plate 3. A waterproof and shock-absorbing pad 403 is laid on the overlapping surface of the large edge 301 and the small edge 304. Then, a matching aluminum alloy cap 402 is fitted onto the top of the small edge 304. A screw 404 is installed above the gold pressure cap 402. A waterproof gasket 401 is fitted before the screw 404 passes through the matching aluminum alloy pressure cap 402. The screw 404 then passes through the matching aluminum alloy pressure cap 402, the small end edge 304 of the corrosion-resistant plate, the waterproof and shockproof gasket 403, and the large end edge 301 of the corrosion-resistant plate in sequence. Finally, the screw 404 is threadedly connected and fixed to the transverse steel keel 1. A longitudinal steel keel 2 is welded between two adjacent transverse steel keels 1. A steel ear plate 5 is embedded at the bottom of the transverse steel keel 1. The steel ear plate 5 includes a U-shaped clamp and a bottom extension plate. A steel ear plate hole 6 is provided on the extension plate. The U-shaped clamp is clamped to the outside of the transverse steel keel 1 and fixed with bolts.
[0022] In the preferred technical solution, both the large end edge 301 and the small end edge 304 of the corrosion-resistant plate are composed of a narrow top plate and inclined panels fixed on both sides of the narrow top strip. The shape of the matching aluminum alloy cover 402 matches the top shape of the small end edge 304 of the corrosion-resistant plate. The matching aluminum alloy cover 402, together with screws, is used to press the overlapping end of the corrosion-resistant plate 3.
[0023] In the preferred technical solution, a raised rib plate 303 is integrally formed in the middle of the horizontal plate 302, and the raised rib plate 303 is used to improve the bending resistance of the horizontal plate 302.
[0024] In the preferred technical solution, the horizontal and vertical steel keel includes a horizontal steel keel 1 and a vertical steel keel 2. The bottom of the screw 404 is threadedly connected to the horizontal steel keel 1. The bottom of the corrosion-resistant plate 3 is supported on the top surface of the horizontal steel keel 1. The horizontal steel keel 1 and the vertical steel keel 2 are pre-assembled by welding, which can improve the stability of the keel.
[0025] In the preferred technical solution, a steel ear plate 5 is fixedly installed at the bottom of the horizontal steel keel 1 by bolts, and an extension plate is fixedly installed at the bottom of the steel ear plate 5. The surface of the extension plate is provided with steel ear plate holes 6. The bolt fixing ensures that the steel keel and the steel ear plate 5 can reliably transmit force. The extension plate expands the connection surface, and the addition of steel ear plate holes 6 facilitates the expansion of fixing points.
[0026] In the preferred technical solution, the waterproof gasket 401 is made of galvanized steel sheet, which is suitable for pressing together with screws to match the aluminum alloy cap 402. The waterproof and shockproof gasket 403 is made of butyl rubber, which has excellent adhesion and sealing properties, and can firmly bond to the metal roof to form a waterproof layer. It also has excellent aging resistance, which can maintain the waterproof effect for a long time. At the same time, the rubber material can absorb vibration, achieving a shockproof effect.
[0027] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A prefabricated metal roof, characterized in that, The system includes horizontal and vertical steel keels and a corrosion-resistant plate (3) laid on top of the horizontal and vertical steel keels. The corrosion-resistant plate (3) includes a large edge (301), a horizontal plate (302), and a small edge (304). The large edge (301) and the small edge (304) of two adjacent corrosion-resistant plates (3) overlap. A waterproof fastener (4) is provided at the overlap between the large edge (301) and the small edge (304). The waterproof fastener (4) includes a screw (404) and a waterproof washer (401). The system includes a matching aluminum alloy cap (402) and a waterproof and shockproof pad (403). The waterproof pad (401) and the matching aluminum alloy cap (402) are located on the upper surface of the small end edge (304) of the corrosion-resistant plate. The waterproof and shockproof pad (403) is located in the gap between the large end edge (301) and the small end edge (304) of the corrosion-resistant plate. The screw (404) passes through the waterproof pad (401), the matching aluminum alloy cap (402), the small end edge (304) of the corrosion-resistant plate, the waterproof and shockproof pad (403), and the large end edge (301) of the corrosion-resistant plate in sequence.
2. The prefabricated metal roof according to claim 1, characterized in that, The large end edge (301) and the small end edge (304) of the corrosion-resistant plate are both composed of a narrow top plate and sloping panels fixed on both sides of the narrow top strip. The shape of the matching aluminum alloy cover (402) matches the top shape of the small end edge (304) of the corrosion-resistant plate.
3. The prefabricated metal roof according to claim 1, characterized in that, The horizontal plate (302) has an integrally formed ribbed plate (303) in the middle.
4. The prefabricated metal roof according to claim 1, characterized in that, The horizontal and vertical steel keel includes a horizontal steel keel (1) and a vertical steel keel (2). The bottom of the screw (404) is threaded to the horizontal steel keel (1), and the bottom of the corrosion-resistant plate (3) is supported on the top surface of the horizontal steel keel (1).
5. The prefabricated metal roof according to claim 4, characterized in that, The bottom of the transverse steel keel (1) is fixedly installed with a steel ear plate (5) by bolts. An extension plate is fixedly installed at the bottom of the steel ear plate (5). The surface of the extension plate is provided with steel ear plate holes (6).
6. The prefabricated metal roof according to claim 1, characterized in that, The waterproof gasket (401) is made of galvanized steel plate, and the waterproof and shockproof gasket (403) is made of butyl rubber.