Waterproof joint of structural member out metal roof and processing installation method

Abstract

The application discloses a kind of waterproof joints of structural member out metal roof and processing installation method, including structural member, roof panel, steel plate, several character purlins, L-shaped steel, butyl mastic, butyl sealing tube glue, roof structure nail, rubber inner plug, polyurethane sealant, waterproof coating, finished waterproof roll and aluminium alloy batten;The structural member includes ceiling board, and connecting piece is welded to the ceiling board, square tube column is welded on the ceiling board, the steel plate is welded with square tube column around using fillet weld, and the outer side of the steel plate is mutually welded with connecting piece;The short side of a plurality of L-shaped steel is welded on the steel plate, and the steel plate and two L-shaped steel form a clamping groove between them.The application provides a kind of waterproof joint and installation method of rigid-flexible combination, multi-channel defense, to improve the waterproof performance and durability of node, release temperature stress, avoid cracking caused by stress concentration Leaking, while using cutting equipment can quickly set rectangular hole on roof panel.

Description

Technical Field

[0001] This invention relates to the field of steel structure enclosure system technology, and in particular to a waterproof joint for structural components extending from a metal roof and a processing and installation method thereof. Background Technology

[0002] Metal roofing is widely used in industrial plants, large stadiums, and warehousing and logistics facilities due to its lightweight, high strength, convenient construction, and good durability. However, the parts where structural components (such as pipes, supports, fans, antenna bases, and steel columns) protrude from the metal roof are the weakest points in waterproofing. Leakage problems related to these components account for more than 60% of metal roof leakage accidents, seriously restricting the quality of metal roofing.

[0003] Structural components at roof junctions are prone to becoming "high-risk seepage points" for rainwater, snowmelt, and condensation. Rainwater, under wind pressure, forms "pressurized water" that seeps into the building along the gaps between the structural components and the roof. When snow melts, water seeps in through capillary action or cracks. Improper waterproofing can lead to damage to indoor equipment, corrosion of structural steel bars, and moisture-induced failure of the insulation layer, even affecting the building's safety and lifespan. In industrial settings such as electronics factories, it can also disrupt production processes, causing economic losses.

[0004] Traditional waterproofing methods have significant limitations: they often use sealant to seal the surface or wrap it with rolls of material. However, sealant is susceptible to UV radiation, temperature changes, and vibration, leading to aging, cracking, and peeling, with a service life of only 3-5 years. The rolls of material have poor adhesion to metal roofs and structural components, and are prone to lifting under wind pressure or structural deformation. Furthermore, the joint treatment lacks a systematic design, does not consider drainage paths or expansion and contraction compensation, and is difficult to adapt to dynamic deformation of the roof.

[0005] Therefore, it is necessary to design a waterproof joint for structural components extending from the metal roof and a processing and installation method to solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of existing technologies by proposing a waterproof joint for structural components in metal roofs and a processing and installation method thereon. This invention provides a waterproof joint and installation method that combines rigidity and flexibility and has multiple layers of protection to improve the waterproof performance and durability of the joint, release temperature stress, and avoid cracking and leakage caused by stress concentration. At the same time, rectangular openings can be quickly made in the roof panel using cutting equipment.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A waterproof joint for a structural component on a metal roof includes: a structural component, a roof panel, a steel plate, purlins, L-shaped steel, butyl sealant, butyl sealing tube adhesive, roof structural nails, rubber end caps, polyurethane sealant, waterproof coating, finished waterproof membrane, and aluminum alloy strips; the structural component includes a ceiling panel, the ceiling panel is welded with connectors, square tubular columns are welded to the ceiling panel, the steel plate and the square tubular columns are welded around their perimeter with fillet welds, and the outer side of the steel plate is welded to the connectors; the short sides of multiple L-shaped steel are welded to the steel plate, and a groove is formed between the steel plate and two L-shaped steel, with the purlins resting centrally in the groove; the middle of the roof panel... A rectangular opening is cut into the roof panel. After cutting, two corrugated openings are created in the middle of the roof panel. The roof panel and the purlins are connected by roof structural nails. Butyl putty is pasted under the roof panel. Butyl sealant is applied before the roof structural nails are driven in. Rubber inner plugs are installed at the corrugated openings of the roof panel. The gaps between the rubber inner plugs and the corrugated openings of the roof panel, as well as the rubber inner plugs themselves, are fully coated with polyurethane sealant. The waterproof coating uses one layer of fabric and three coats or three layers of fabric and five coats. The finished waterproof membrane uses Detai cover sheet, and the application range is 200mm beyond the rectangular opening. The aluminum alloy pressure strip is set around the waterproof membrane and around the upturned part of the steel plate, and is fixed by roof structural nails with waterproof washers.

[0008] Preferably, the dimensions of the rectangular opening are: along the drainage direction, the structural component cross-section height + 400mm, and the top and bottom edges of the structural component are 200mm; perpendicular to the drainage direction, the structural component cross-section width + 200mm, and the left and right edges of the structural component are 100mm.

[0009] Preferably, the steel plate protrudes 350mm beyond the outer edge of the square tube column, the steel plate is parallel to the roof panel, and the elevation of the upper surface of the steel plate 31 is 40mm lower than the upper surface of the purlin 33.

[0010] Preferably, the purlin is flush with the edge of the rectangular opening, and the L-shaped steel is spaced mm from the edge of the purlin so that the purlin slides with the roof panel.

[0011] A method for processing and installing waterproof joints for structural components extending from metal roofs as described above, characterized by comprising the following steps: S1: Use cutting equipment to cut rectangular openings in the roof panel. The opening size is set as follows: structural component section height + 400mm along the drainage direction and structural component section width + 200mm perpendicular to the drainage direction. S2: Weld the L-shaped steel to the steel plate according to the positioning dimensions, and then weld the steel plate to the ceiling plate with fillet welds around the perimeter; S3: Before installing the roof panel, insert the purlin into the slot and center it. The purlin is not connected to the steel plate. S4: Adhere a ring of butyl putty to the underside of the roof panel corresponding to the purlin position, apply butyl sealant, and then connect the roof panel to the purlin using roof structural nails; place a rubber inner plug at the corrugated opening, with the rubber inner plug embedded mm into the corrugated opening, and fully apply polyurethane sealant to cover the rubber inner plug and the gap between the rubber inner plug and the corrugated opening; S5: Apply waterproof coating around the rectangular opening and cover it with finished waterproof membrane. The waterproof coating is applied using one layer of fabric and three coats or three layers of fabric and five coats. The finished waterproof membrane is applied to a range extending 200mm outward from the rectangular opening and turning up at least 150mm where structural components are encountered. Aluminum alloy strips are installed around the waterproof membrane and around the turning-up areas of structural components, and fixed with roof structural nails with waterproof gaskets.

[0012] Preferably, the waterproof coating adopts a three-layer, five-coat method, and the finished waterproof membrane is preferably made of Detai cover sheet.

[0013] Preferably, the cutting device includes a worktable. Two long protrusions and two short protrusions are fixedly connected to the upper end of the worktable. The two short protrusions are located between the two long protrusions. The long and short protrusions correspond to the crests of the roof panel for positioning. The worktable has a rectangular opening. A fixing frame is fixedly connected to both the front and rear sides of the worktable. A rotating cutting assembly is provided at the lower end of the fixing frame. The rotating cutting assembly is used to cut rectangular openings in the roof panel without material feeding. The rotating cutting assembly includes two hydraulic rods fixedly connected to the lower end of the fixing frame. The lower ends of the two hydraulic rods are fixedly connected to a moving plate. A first servo motor is mounted on the upper end of the plate. The output shaft of the first servo motor passes through the moving plate and is fixedly connected to a fixed plate. Two rectangular plates are provided on the lower end of the fixed plate. A second slide rail is fixedly connected to the lower end of each of the two rectangular plates. A second slider is slidably connected to each of the two second slide rails. Mounting seats are mounted on adjacent sides of each of the two second sliders. A second servo motor is mounted on the upper end of each of the two mounting seats. A second gear is fixedly connected to the output shaft of each of the two second servo motors through the mounting seat. A first rack that meshes with the second gear is mounted on the lower end of the rectangular plate. A laser head is mounted on the lower end of each of the two second sliders.

[0014] Preferably, the system further includes a spacing adjustment assembly, which includes pneumatic rods fixedly connected to the left and right sides of the fixed plate. The telescopic ends of the two pneumatic rods are connected to the rectangular plate through connecting blocks. L-shaped blocks are fixedly connected to both the front and rear sides of the fixed plate. A first slide rail is fixedly connected to the adjacent sides of every two mating L-shaped blocks. Two first sliders are slidably connected to each of the two first slide rails. The lower ends of every two mating first sliders are fixedly connected to the corresponding rectangular plate.

[0015] Preferably, the assembly further includes a feeding component, which includes two rectangular slots disposed on the upper part of the worktable. The inner walls of the left and right sides of the two rectangular slots are rotatably connected to multiple rotating shafts. Each rotating shaft is fixedly connected to a conveying roller. The upper end of each conveying roller is flush with the upper surface of the worktable. One side of each rotating shaft extends to the outside. Every two adjacent rotating shafts are connected by a transmission component. The two rotating shafts on the left side are connected to a first gear by a one-way bearing. Two connecting rods are fixedly connected to the left side of the moving plate. A second rack is fixedly connected to the opposite sides of the two connecting rods. A U-shaped frame is installed on the right side of the worktable.

[0016] The present invention has the following beneficial effects: Compared with the prior art, the present invention forms a sliding connection structure through the combination design of steel plate, L-shaped steel and Z-shaped purlin. The Z-shaped purlin can slide freely with the roof panel, effectively releasing the stress generated by the roof due to temperature changes, avoiding the problem of joint cracking and water leakage caused by traditional rigid connection, and significantly improving the structural adaptability of the joint. Compared with the prior art, the present invention sets up a multi-layer sealing and waterproof structure, including a combination of butyl putty, butyl sealing tube adhesive, rubber inner plug and polyurethane sealant, and multiple waterproof layers formed by waterproof coating and finished waterproof membrane, which are fixed with aluminum alloy pressure strips to build an all-round waterproof barrier, greatly improving the waterproof reliability and durability of the joint. Compared with the prior art, the present invention has scientifically designed the size of the rectangular opening in the roof panel, and expanded the structural component cross-section by a specific size along the drainage direction and perpendicular to the drainage direction, which not only ensures smooth drainage, but also leaves sufficient space for waterproofing construction. At the same time, the welding method of the structural component to the steel plate and the connecting parts ensures the structural stability of the node. Compared with existing technologies, this invention features a dedicated cutting device that precisely positions the roof panel using long and short protrusions. By utilizing a rotating cutting component and a spacing adjustment component, it can directly cut rectangular openings that meet the size requirements on the roof panel without the need for pre-cutting. Combined with the material cutting component, it achieves automated conveying, improving construction efficiency and opening cutting accuracy.

[0017] In summary, this invention effectively solves the problems of easy leakage, short lifespan, and low construction efficiency of structural components at metal roof nodes by optimizing structural design, applying multiple waterproofing measures, and using specialized construction equipment. It has the advantages of reasonable structure, reliable waterproofing, strong adaptability, and convenient construction, and is suitable for various scenarios where structural components penetrate metal roofs. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of a waterproof node for a metal roof structure proposed in this invention. Figure 2 This is a partial three-dimensional structural diagram of a waterproof node for a metal roof structure proposed in this invention. Figure 3 for Figure 1 Top view; Figure 4 This is a sectional view of the roof panels and main roof panels before they are installed. Figure 5 A sectional view of the roof panels and main roof panels after installation; Figure 6 for Figure 5 Enlarged structural diagram at point A; Figure 7 This is a structural diagram of the roof panel processing equipment; Figure 8 for Figure 7 Another structural diagram from a different perspective; Figure 9 for Figure 3 Dimensioning diagram of the middle section; Figure 10 for Figure 1 Schematic diagram showing the dimensions in the middle section.

[0019] In the diagram: 1. Workbench, 2. Long protrusion, 3. Short protrusion, 4. Rectangular opening, 5. Fixed frame, 6. Conveying roller, 7. Rotating shaft, 8. Transmission assembly, 9. U-shaped frame, 10. Hydraulic rod, 11. Moving plate, 12. First servo motor, 13. Fixed plate, 14. L-shaped block, 15. Pneumatic rod, 16. Connecting block, 17. First slide rail, 18. First slider, 19. Second slide rail, 20. First rack, 21. Connecting rod, 22. Second rack, 23. First gear, 24. Second servo motor, 25. Second gear, 26. Second slider, 27. Laser head, 28. Rectangular plate, 29. Ceiling plate, 30. Square tube column, 31. Steel plate, 32. L-shaped steel, 33. Z-shaped purlin, 34. Roof panel, 35. Roof sliding support, 36. Rubber inner plug, 37. Polyurethane sealant, 38. Roof structural nail, 39. Butyl sealing tube adhesive, 40. Butyl putty. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0021] Reference Figures 1-10 A waterproof joint for a structural component in a metal roof, comprising: Structural components, roof panels 34, steel plates 31, purlins 33, L-shaped steel 32, butyl putty 40, butyl sealing tube adhesive 39, roof structural nails 38, rubber inner plugs 36, polyurethane sealant 37, waterproof coatings, finished waterproof membranes and aluminum alloy strips. The structural components include a ceiling panel 29, with welded connectors on the ceiling panel 29, and square tube columns 30 welded on the ceiling panel 29. A steel plate 31 is welded to the square tube columns 30 around its perimeter using fillet welds. The outer side of the steel plate 31 is welded to the connectors, and the outer edge of the steel plate 31 is fully welded to the reserved welding surface of the connectors, with a weld leg height of 5mm, forming a two-way fixation. The steel plate 31 protrudes 350mm beyond the outer edge of the square tube columns 30 around its perimeter. This dimension ensures sufficient coverage space for the subsequent waterproof membrane and avoids deformation caused by excessive cantilever of the steel plate 31. The steel plate 31 is parallel to the roof panel 34, and the elevation of the upper surface of the steel plate 31 is 40mm lower than the upper surface of the purlin 33. This height difference matches the cross-sectional height of the purlin 33, allowing the top of the purlin 33 to fit tightly against the lower surface of the roof panel 34, ensuring the flatness of the roof panel 34 after installation. The short sides of multiple L-shaped steel bars 32 are welded to the steel plate 31. The steel plate 31 and two L-shaped steel bars 32 form a groove. The Z-shaped purlin 33 is placed in the groove in the center. The Z-shaped purlin 33 is flush with the edge of the rectangular opening. The distance between the edges of the L-shaped steel bars 32 and the Z-shaped purlin 33 is 20mm. This gap can meet the expansion and contraction requirements of the roof panel 34 due to temperature changes, so that the Z-shaped purlin 33 can slide synchronously with the roof panel 34 to release temperature stress. A rectangular opening is cut in the middle of the roof panel 34. The dimensions of the rectangular opening are as follows: along the drainage direction, it is the structural component section height + 400mm, and 200mm on the top and bottom edges of the structural component; perpendicular to the drainage direction, it is the structural component section width + 200mm, and 100mm on the left and right edges of the structural component. After cutting, two corrugated openings are generated in the middle of the roof panel 34. The roof panel 34 and the purlin 33 are connected by roof structural nails 38. The roof structural nails 38 are S38, made of stainless steel, with a nail shank diameter of 5mm and a nail head diameter of 12mm. Butyl putty 40 is pasted under the roof panel 34. The butyl putty 40 is 20mm wide and 3mm thick, made of butyl rubber, and has the characteristics of high and low temperature resistance and aging resistance. The butyl putty 40 must be aligned with the edge of the purlin 33 without any offset. Butyl sealant 39 is applied before the roof structural nails 38 are driven in. A rubber inner plug 36 is installed at the corrugation opening of the roof panel 34. The rubber inner plug 36 is made of EPDM rubber, which has weather resistance and aging resistance. Its shape is perfectly matched with the inner curvature of the corrugation of the roof panel 34, and its size is 2mm larger than the corrugation opening to achieve an interference fit. The gap between the rubber inner plug 36 and the corrugation opening of the roof panel 34, as well as the rubber inner plug 36, are fully coated with polyurethane sealant 37 with a coating thickness of 3~5mm to ensure that the gap is completely filled without bubbles or missed coating. The waterproof coating uses one layer of fabric and three coats or three layers of fabric and five coats. The finished waterproof membrane uses Detai cover sheet. The application range is 200mm outside the rectangular opening. Aluminum alloy pressure strips are set around the waterproof membrane and around the upturned part of the steel plate 31, and are fixed by roof structure nails 38 with waterproof gaskets.

[0022] A method for processing and installing waterproof joints for the above-mentioned structural components on metal roofs includes the following steps: S1: Use a cutting device to cut a rectangular opening on the roof panel 34. The opening size is set as follows: the height of the structural component section + 400mm along the drainage direction and the width of the structural component section + 200mm perpendicular to the drainage direction. S2: Weld the L-shaped steel 32 onto the steel plate 31 according to the positioning dimensions, and then weld the steel plate 31 to the connector on the ceiling panel 29 around the perimeter using fillet welds; S3: Before installing the roof panel 34, insert the purlin 33 into the slot and place it in the center. The purlin 33 is not connected to the steel plate 31. S4: Apply a ring of butyl putty 40 to the underside of the roof panel 34 at the position corresponding to the purlin 33, apply butyl sealant 39, and then connect the roof panel 34 to the purlin 33 using roof structural nails 38; place a rubber inner plug 36 at the corrugated opening, with the rubber inner plug 36 embedded 5mm into the corrugated opening, and fully apply polyurethane sealant 37 to cover the rubber inner plug 36 and the gap between the rubber inner plug 36 and the corrugated opening; S5: Apply waterproof coating around the rectangular opening and cover it with finished waterproof membrane. The waterproof coating should be applied using one layer of membrane and three coats or three layers of membrane and five coats, with three layers of membrane and five coats being preferred. For the finished waterproof membrane, Detai cover sheet is preferred. The finished waterproof membrane should be applied 200mm beyond the rectangular opening and turned up at least 150mm when encountering structural components. Install aluminum alloy strips around the waterproof membrane and around the turned-up areas of structural components, and fix them with roof structural nails 38 with waterproof washers.

[0023] The cutting equipment includes a workbench 1. Two long protrusions 2 and two short protrusions 3 are fixedly connected to the upper end of the workbench 1. The two short protrusions 3 are located in the middle of the two long protrusions 2. The long protrusions 2 and the short protrusions 3 correspond to the crests of the roof panel 34 to position the roof panel 34 and prevent the roof panel 34 from shifting during cutting. The workbench 1 is provided with a rectangular opening 4. The front and rear sides of the workbench 1 are fixedly connected with a fixing frame 5. The lower end of the fixing frame 5 is provided with a rotating cutting component. The rotating cutting component is used to cut rectangular openings on the roof panel 34 without material feeding. The rotating cutting assembly includes two hydraulic rods 10 fixedly connected to the lower end of the fixed frame 5. The hydraulic rods 10 are HSG80×200, with a rated working pressure of 10MPa and a stroke of 200mm, enabling the laser head 27 to be raised and lowered. A movable plate 11 is fixedly connected to the lower ends of the two hydraulic rods 10. A first servo motor 12 is mounted on the upper end of the movable plate 11. The output shaft of the first servo motor 12 passes through the movable plate 11 and is fixedly connected to a fixed plate 13. Two rectangular plates 28 are provided at the lower end of the fixed plate 13. A second slide rail 19 is fixedly connected to the lower end of each of the two rectangular plates 28. Second sliders 26 are slidably connected to the second slide rails 19. Mounting seats are installed on adjacent sides of the two second sliders 26. Second servo motors 24 are installed on the upper ends of the two mounting seats. The output shafts of the two second servo motors 24 pass through the mounting seats and are fixedly connected to the second gears 25. A first rack 20 that meshes with the second gears 25 is installed on the lower end of the rectangular plate 28. A laser head 27 is installed on the lower end of the two second sliders 26. The laser head 27 is model IPGYLR-100, with a laser wavelength of 1064nm, a maximum power of 100W, and a cutting accuracy of ≤±0.1mm.

[0024] The system also includes a spacing adjustment assembly, which consists of pneumatic rods 15 fixedly connected to the left and right sides of the fixed plate 13. The telescopic ends of the two pneumatic rods 15 are connected to the rectangular plate 28 via connecting blocks 16. L-shaped blocks 14 are fixedly connected to both the front and rear sides of the fixed plate 13. A first slide rail 17 is fixedly connected to the adjacent sides of every two mating L-shaped blocks 14. Two first sliders 18 are slidably connected to the two first slide rails 17. The lower end of every two mating first sliders 18 is fixedly connected to the corresponding rectangular plate 28, ensuring that the rectangular plate 28 moves smoothly along the first slide rail 17 without deviation.

[0025] It also includes a feeding assembly, which includes two rectangular slots set on the upper end of the workbench 1. Multiple rotating shafts 7 are rotatably connected to the inner walls of the left and right sides of the two rectangular slots. Each rotating shaft 7 is fixedly connected to a conveying roller 6. The conveying roller 6 is made of rubber and has good anti-slip properties. The upper end of each conveying roller 6 is flush with the upper surface of the workbench 1. One side of each rotating shaft 7 extends to the outside. Every two adjacent rotating shafts 7 are connected by a transmission assembly 8. The transmission assembly 8 includes a synchronous belt and a synchronous pulley. Two adjacent transmission assemblies 8 are staggered. The two rotating shafts 7 on the left side are connected to a first gear 23 by a one-way bearing. Two connecting rods 21 are fixedly connected to the left side of the moving plate 11. A second rack 22 is fixedly connected to the opposite side of the two connecting rods 21. A U-shaped frame 9 is installed on the right side of the workbench 1. The U-shaped frame 9 can provide lateral support for the roof panel 34 during the conveying process to prevent it from tilting and falling to the right due to the shift of the center of gravity.

[0026] The functional principle of this invention can be explained through the following operation: When the cutting equipment is running, the long protrusion 2 and short protrusion 3 of the worktable 1 are precisely engaged with the crest of the roof panel 34 to complete mechanical positioning and ensure a stable and unbiased cutting position. Then, the hydraulic rod 10 is stretched, pushing the moving plate 11 and the laser head 27 below it to descend synchronously until the laser head 27 reaches the appropriate cutting height. Next, the spacing adjustment component is activated, and the pneumatic rod 15 extends and retracts, causing the rectangular plate 28 to slide along the first slide rail 17, precisely adjusting the spacing between the two laser heads 27 to perfectly match the width parameters of the rectangular opening to be cut.

[0027] After preparation, the second servo motor 24 is started, and its output shaft drives the second gear 25 to rotate. Since the second gear 25 meshes with the first rack 20 fixed at the lower end of the rectangular plate 28, the gear rotation is converted into linear motion, driving the second slider 26 to move smoothly along the second slide rail 19. The laser head 27 moves synchronously to complete the cutting operation on the front and rear sides of the roof panel 34. After the front and rear sides are cut, the first servo motor 12 starts working, driving the fixed plate 13, the rectangular plate 28 below, and the laser head 27 to rotate 90 degrees as a whole, changing the cutting direction; at the same time, the two pneumatic rods 15 move again, adjusting the distance between the laser heads 27 to the length of the rectangular opening. Then, the two second servo motors 24 are controlled to run again, and the laser head 27 moves in the new direction to complete the cutting on the left and right sides of the roof panel 34.

[0028] The rectangular waste material formed by cutting falls naturally through the rectangular opening 4 of the workbench 1, achieving automatic slag removal. It is worth noting that during the process of the hydraulic rod 10 extending and driving the laser head 27 downwards, the second rack 22 on the left side of the moving plate 11 moves downwards synchronously. At this time, because a one-way bearing is provided between the first gear 23 and the rotating shaft 7, although the first gear 23 rotates with the second rack 22, it does not drive the rotating shaft 7, and the conveying roller 6 remains stationary, not affecting the cutting accuracy. When the cutting operation is completed, the hydraulic rod 10 retracts, driving the moving plate 11 upwards, and the second rack 22 moves upwards synchronously. At this time, the one-way bearing unlocks, and the first gear 23 drives multiple rotating shafts 7 and the conveying roller 6 to rotate synchronously through the transmission assembly 8, conveying the cut roof panel 34 to the right. The U-shaped frame 9 on the right side of the workbench 1 serves as an auxiliary support, effectively preventing the roof panel 34 from tilting and falling to the right due to a shift in the center of gravity during conveying, ensuring that the roof panel 34 can complete the unloading process smoothly and completely. The entire operation process, through the coordinated cooperation of mechanical positioning, precise adjustment, direction switching and linkage conveying, achieves efficient cutting of rectangular openings and safe transfer of roof panels 34.

[0029] The subsequent installation steps proceed as follows: First, weld and fix the steel plate 31 to the L-shaped steel 32. Measure and mark the installation position of the steel plate 31, ensuring that the steel plate 31 protrudes 350mm beyond the outer edge of the square tube column 30 on all four sides, and that its upper surface elevation is 40mm lower than the upper surface of the purlin 33. Weld the short side of the L-shaped steel 32 to the edge of the steel plate 31 according to the positioning dimensions to form a slot structure (leaving a 20mm gap between the L-shaped steel 32 and the edge of the purlin 33). Then, firmly weld the steel plate 31 to the square tube column 30 around its perimeter using fillet welds, and simultaneously weld and fix the steel plate 31 to the connectors on the ceiling panel 29 to form a stable rigid support structure. Next, install the purlin 33. Before the roof panel 34 is officially fixed, insert the purlin 33 into the slot and place it in the center, keeping it in a non-connected state with the steel plate 31 to allow for sliding space. Next, the roof panel 34 is fixed and sealed: a ring of butyl putty 40 is pasted below the position of the roof panel 34 corresponding to the purlin 33, and butyl sealant 39 is pre-applied to the location where the roof structural nails 38 are driven. Then, the roof panel 34 and the purlin 33 are tightly connected with the roof structural nails 38. For the opening at the crest of the roof panel 34, the rubber inner plug 36 is embedded into the opening to a depth of 5mm. Then, polyurethane sealant 37 is fully applied to the gap between the rubber inner plug 36 and the opening, as well as to the rubber inner plug 36, to complete the local sealing. Finally, multiple waterproofing steps are implemented: waterproof coating is applied around the rectangular opening, and finished waterproof membrane is used to cover it, ensuring that the waterproof membrane extends 200mm beyond the opening and extends upwards at least 150mm when encountering structural components; aluminum alloy strips are installed around the waterproof membrane and around the upward-turned areas of structural components, and the strips are fixed with roof structural nails 38 with waterproof washers at 50mm intervals, completing the installation of the entire waterproof node.

[0030] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A waterproofing joint for a structural metal roof, characterized by, include: Structural components, roof panels (34), steel plates (31), purlins (33), L-shaped steel (32), butyl putty (40), butyl sealing tube adhesive (39), roof structural nails (38), rubber inner plugs (36), polyurethane sealant (37), waterproof coatings, finished waterproof membranes and aluminum alloy strips; The structural components include a ceiling panel (29), the ceiling panel (29) is welded with connectors, and a square tube column (30) is welded on the ceiling panel (29). The steel plate (31) is welded to the square tube column (30) around the perimeter by fillet welds, and the outer side of the steel plate (31) is welded to the connectors. The short sides of multiple L-shaped steels (32) are welded to a steel plate (31), and a groove is formed between the steel plate (31) and two L-shaped steels (32), and the purlin (33) is placed in the groove in the center; A rectangular opening is cut in the middle of the roof panel (34). After cutting, two wave peak openings are generated in the middle of the roof panel (34). The roof panel (34) and the purlin (33) are connected by roof structure nails (38). Butyl putty (40) is pasted under the roof panel (34). Butyl sealant (39) is applied before the roof structure nails (38) are driven. A rubber inner plug (36) is provided at the corrugation opening of the roof panel (34), and the rubber inner plug (36) and the gap between the corrugation opening of the roof panel (34) and the rubber inner plug (36) are fully coated with polyurethane sealant (37). The waterproof coating adopts one layer of cloth and three coats or three layers of cloth and five coats. The finished waterproof membrane adopts Detai cover sheet. The application range is 200mm outside the rectangular opening. The aluminum alloy pressure strip is set around the waterproof membrane and around the upturned part of the steel plate (31), and is fixed by roof structure nails (38) with waterproof gaskets.

2. The waterproof joint for a structural component extending from a metal roof according to claim 1, characterized in that: The steel plate (31) protrudes 350mm beyond the outer edge of the square tube column (30) around its perimeter. The steel plate (31) is parallel to the roof panel (34). The elevation of the upper surface of the steel plate (31) is 40mm lower than the upper surface of the purlin (33).

3. A waterproof joint for a structural component extending from a metal roof according to claim 2, characterized in that: The purlin (33) is flush with the edge of the rectangular opening, and the L-shaped steel (32) is 20mm apart from the edge of the purlin (33) so that the purlin (33) can slide with the roof panel (34).

4. A method for processing and installing a waterproof joint for a structural member extending from a metal roof as described in any one of claims 1-3, characterized in that, Includes the following steps: S1: Use a cutting device to cut a rectangular opening in the roof panel (34); S2: Weld the L-shaped steel (32) onto the steel plate (31) according to the positioning dimensions, and then weld the steel plate (31) to the connecting parts on the ceiling plate (29) around the perimeter using fillet welds; S3: Before installing the roof panel (34), insert the purlin (33) into the slot and place it in the center. The purlin (33) is not connected to the steel plate (31). S4: A ring of butyl putty (40) is pasted under the roof panel (34) at the position corresponding to the purlin (33). After applying butyl sealant (39), the roof panel (34) and the purlin (33) are connected by roof structural nails (38). A rubber inner plug (36) is placed at the corrugated opening. The rubber inner plug (36) is embedded 5mm into the corrugated opening. Polyurethane sealant (37) is applied to cover the rubber inner plug (36) and the gap between the rubber inner plug (36) and the corrugated opening. S5: Apply waterproof coating around the rectangular opening and cover it with finished waterproof membrane. The waterproof coating is applied by one layer of fabric and three coats or three layers of fabric and five coats. The finished waterproof membrane is applied within a range of 200mm beyond the rectangular opening and at least 150mm up where structural components are encountered. Aluminum alloy strips are installed around the waterproof membrane and around the upturned parts of structural components and fixed with roof structural nails (38) with waterproof gaskets.

5. The processing and installation method for waterproof joints of structural components on metal roofs according to claim 4, characterized in that: The waterproof coating uses a three-layer, five-coat method, and the finished waterproof membrane is made of Detai cover sheet.

6. The method for processing and installing a waterproof joint of a structural component on a metal roof according to claim 4, characterized in that: The cutting equipment includes a workbench (1), with two long protrusions (2) and two short protrusions (3) fixedly connected to the upper end of the workbench (1). The two short protrusions (3) are located in the middle of the two long protrusions (2). The long protrusions (2) and the short protrusions (3) correspond to the crests of the roof panel (34) to position the roof panel (34). The workbench (1) is provided with a rectangular opening (4). The front and rear sides of the workbench (1) are fixedly connected with a fixing frame (5). The lower end of the fixing frame (5) is provided with a rotating cutting assembly. The rotating cutting assembly is used to cut rectangular openings on the roof panel (34) without material feeding. The rotating cutting assembly includes two hydraulic rods (10) fixedly connected to the lower end of the fixing frame (5). The lower ends of the two hydraulic rods (10) are fixedly connected to a moving plate (11). The upper end of the moving plate (11) is equipped with a... The first servo motor (12) is installed. The output shaft of the first servo motor (12) passes through the moving plate (11) and is fixedly connected to the fixed plate (13). The lower end of the fixed plate (13) is provided with two rectangular plates (28). The lower ends of the two rectangular plates (28) are fixedly connected to the second slide rails (19). The two second slide rails (19) are slidably connected to the second sliders (26). The adjacent sides of the two second sliders (26) are equipped with mounting seats. The upper ends of the two mounting seats are equipped with second servo motors (24). The output shafts of the two second servo motors (24) pass through the mounting seats and are fixedly connected to the second gears (25). The lower end of the rectangular plate (28) is equipped with a first rack (20) that meshes with the second gears (25). The lower ends of the two second sliders (26) are equipped with laser heads (27).

7. The processing and installation method for a waterproof joint of a structural component extending from a metal roof according to claim 6, characterized in that: It also includes a spacing adjustment component, which includes pneumatic rods (15) fixedly connected to the left and right sides of the fixed plate (13). The telescopic ends of the two pneumatic rods (15) are connected to the rectangular plate (28) through connecting blocks (16). L-shaped blocks (14) are fixedly connected to both the front and rear sides of the fixed plate (13). A first slide rail (17) is fixedly connected to the adjacent sides of every two mating L-shaped blocks (14). Two first sliders (18) are slidably connected to the two first slide rails (17). The lower end of every two mating first sliders (18) is fixedly connected to the corresponding rectangular plate (28).

8. The method for processing and installing a waterproof joint of a structural component on a metal roof according to claim 6, characterized in that: It also includes a feeding assembly, which includes two rectangular slots set on the upper end of the workbench (1). The inner walls of the left and right sides of the two rectangular slots are rotatably connected to multiple rotating shafts (7). Each rotating shaft (7) is fixedly connected to a conveying roller (6). The upper end of each conveying roller (6) is flush with the upper surface of the workbench (1). One side of each rotating shaft (7) extends to the outside. Every two adjacent rotating shafts (7) are connected by a transmission assembly (8). The two rotating shafts (7) on the left side are connected to a first gear (23) by a one-way bearing. Two connecting rods (21) are fixedly connected to the left side of the moving plate (11). The opposite sides of the two connecting rods (21) are fixedly connected to a second rack (22). A U-shaped frame (9) is installed on the right side of the workbench (1).

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