Hanging and inserting combined adjustable metal sandwich panel curtain wall system and installation method thereof

Abstract

This invention discloses a plug-in type adjustable metal sandwich panel curtain wall system and its installation method. The system includes curtain wall panels, secondary keels fixedly connected to primary keels, and a U-shaped steel plate with an upward opening at the top and a slotted hole at the bottom of the secondary keel. A through hole is formed at the top of the secondary keel, and the stud of an adjustable bolt for height adjustment passes through the through hole and the slotted hole from bottom to top. A rectangular hanging shaft, matching the opening size of the U-shaped steel plate, is fixedly connected to the side of the curtain wall panel closest to the interior. The curtain wall panel is hung on the secondary keel through the rectangular hanging shaft and the U-shaped steel plate. The bottom of the rectangular hanging shaft contacts the top of the stud of the adjusting bolt. Adjacent curtain wall panels in both the horizontal and vertical directions are plugged into each other. A groove is formed at the plugged end of the curtain wall panel, containing a metal slot and a sealing strip to improve the system's water tightness and air tightness. The plug-in method eliminates the need for on-site nailing, and adjustment is still possible after plugging.

Description

Technical Field

[0001] This invention relates to the field of curtain walls, and more particularly to a plug-in type adjustable metal sandwich panel curtain wall system and its installation method. Background Technology

[0002] Metal sandwich panels are composite building materials with metal sheets as the facing material and core materials (rock wool, polyurethane, etc.) as the filler. They possess excellent thermal insulation and mechanical strength, and are widely used in building exterior walls, roofs, and interior partitions. Not only are they lightweight, but they also offer fire resistance and sound insulation, meeting the high-efficiency construction needs of modern buildings. This material originates from the fusion of metal processing and composite technology, formed through a continuous composite process. The facing material undergoes a coating treatment, resulting in strong weather resistance and resistance to corrosion. In recent years, it has gained increasing popularity in industrial plants, commercial complexes, and modular buildings.

[0003] Traditional metal sandwich panel construction systems focus solely on enclosure functionality, employing screw-fixed installation with only vertical insertion between panels. This results in insufficient sealing performance, and gaps are prone to occur during installation due to inaccurate installation and dimensional deviations. Conventional methods are insufficient to completely eliminate leakage risks. Misalignment and unevenness are common at corners and irregularly shaped areas, and these issues are difficult to adjust due to the structural design. Consequently, they negatively impact the building's facade appearance and overall performance, failing to meet the high requirements of high-end factories, offices, and mixed-use complexes in terms of energy conservation, aesthetic appeal, and interior comfort.

[0004] Current metal sandwich panel curtain wall systems consist of vertical main keels, horizontal secondary keels, and metal sandwich panels, which are directly fixed to the horizontal keels with screws. This has the following disadvantages: The installation method involves direct nailing, which cannot be adjusted after installation, making it difficult to guarantee installation accuracy and resulting in low installation efficiency. Furthermore, the panels on adjacent left and right sides are not interlocked, leading to poor sealing performance and mediocre appearance. Summary of the Invention

[0005] To address the problems in the prior art, this invention provides a plug-in type adjustable metal sandwich panel curtain wall system and its installation method.

[0006] In a first aspect, the present invention discloses a plug-in type adjustable metal sandwich panel curtain wall system, comprising a vertical main keel, a horizontal secondary keel, and a plurality of curtain wall panels. The secondary keel is fixedly connected to the main keel. The top of the secondary keel is provided with an upward-opening U-shaped steel plate. The bottom of the U-shaped steel plate has a slot, and the top of the secondary keel has a through hole. The stud of an adjustable height bolt passes through the through hole and the slot from bottom to top. The width of the slot is smaller than the outer diameter of the nut of the adjusting bolt, and the length of the slot is larger than the diameter of the stud of the adjusting bolt. A rectangular hanging shaft adapted to the opening size of the U-shaped steel plate is fixedly connected to the side of the curtain wall panel closest to the interior. The curtain wall panel is hung on the corresponding secondary keel by cooperating with the U-shaped steel plate through the rectangular hanging shaft. The bottom of the rectangular hanging shaft contacts the top of the stud of the adjusting bolt. Among the plurality of curtain wall panels, adjacent curtain wall panels in the horizontal direction are plugged into each other, and adjacent curtain wall panels in the vertical direction are plugged into each other.

[0007] In some embodiments, the plurality of curtain wall panels include adjacent first metal sandwich panels and second metal sandwich panels; the first metal sandwich panel is recessed inward at one end near the second metal sandwich panel to form a limiting portion and a second groove, and the limiting portion is recessed inward at one end near the second groove to form a first groove; the second metal sandwich panel includes a stepped portion and a protruding portion at one end near the first metal sandwich panel, the stepped portion cooperating with the limiting portion, and the protruding portion being inserted into the second groove; a first metal slot is fixedly provided in the first groove, the opening of the first metal slot facing the stepped portion, and the first metal slot is fully filled with a first sealing strip; the end of the protruding portion is fixedly connected to a second metal slot, the opening of the second metal slot facing the wall of the second groove, and the second metal slot is fully filled with a second sealing strip.

[0008] In some embodiments, the first metal slot is a single-sided slot, and a fine gap is provided at the overlap of the first sealing strip in the first metal slot to form a watertight line for the first sealing strip; the end of the protrusion is fixedly connected to a second metal slot, the second metal slot is a double-sided slot, and the second sealing strip in the second metal slot overlaps tightly to form an airtight line for the second sealing strip; the first sealing strip is closer to the outdoor side than the second sealing strip so that the cavity between the first sealing strip and the second sealing strip forms an isobaric cavity.

[0009] In some embodiments, the curtain wall system further includes a first embedded metal plate and a second embedded metal plate. The first embedded metal plate includes a first embedded portion located inside the first metal sandwich panel and a first slot mounting portion located inside the first groove. The first metal slot is fixedly connected to the first slot mounting portion by self-tapping screws. The second embedded metal plate includes a second embedded portion located inside the second metal sandwich panel and a second slot mounting portion located at one end of the protrusion. The second metal slot is fixedly connected to the second slot mounting portion by self-tapping screws.

[0010] In some embodiments, the first metal slot and the first embedded metal plate are made of different metal materials, and a first isolation gasket is provided between the first metal slot and the first slot mounting portion; the second metal slot and the second embedded metal plate are made of different metal materials, and a second isolation gasket is provided between the second metal slot and the second slot mounting portion.

[0011] In some embodiments, the curtain wall system further includes an angle steel connector, a third embedded metal plate is provided in the curtain wall panel, one side of the angle steel connector is fixedly connected to the third embedded metal plate by a bolt assembly to be fixedly connected to the curtain wall panel, and one end of the angle steel connector away from the curtain wall panel is welded to the rectangular hanging shaft.

[0012] In some embodiments, the top of the first side of the U-shaped steel plate is lower than the top of the second side, the first side being the side of the U-shaped steel plate closer to the curtain wall panel, and the second side being the side of the U-shaped steel plate farther from the curtain wall panel.

[0013] In some embodiments, a third isolation pad is attached to the two inner sides of the U-shaped steel plate.

[0014] In some embodiments, the perforation is one of a cross-shaped perforation, a T-shaped perforation, or an L-shaped perforation.

[0015] Secondly, the present invention discloses an installation method for a curtain wall, used to install the adjustable metal sandwich panel curtain wall system with plug-in connection described in the first aspect, the installation method comprising: U-shaped steel plates are installed on the horizontal keel using adjusting bolts, wherein multiple U-shaped steel plates are evenly arranged along the length of each curtain wall panel. The rectangular hanging shaft is fixedly installed on the indoor side of the curtain wall panel; The first curtain wall panel of the bottom ring on each floor is hung on the corresponding U-shaped steel plate using a rectangular hanging shaft; The second curtain wall panel, which is horizontally adjacent to the first curtain wall panel, is attached to its corresponding U-shaped steel plate. Insert the end of the second curtain wall panel closest to the first curtain wall panel into the first curtain wall panel, and then complete the installation of all curtain wall panels in this circle in sequence. The elevation of the rectangular hanging shaft of the adjusting bolt at the bottom of the U-shaped steel plate is adjusted by matching the adjusting bolt with the slot at the bottom of the U-shaped steel plate, thereby adjusting the horizontal position of the U-shaped steel plate on the secondary keel to complete the adjustment of the curtain wall panel within this ring. Install and adjust the curtain wall panels around the top ring, and then complete the installation and adjustment of all curtain wall panels in sequence.

[0016] The beneficial effects of this invention are as follows: This invention discloses a plug-in type adjustable metal sandwich panel curtain wall system and its installation method. The system includes a vertical main keel, a horizontal secondary keel, and several curtain wall panels. The secondary keels are fixedly connected to the main keel. The top of the secondary keel is provided with an upward-opening U-shaped steel plate. The bottom of the U-shaped steel plate has a slot, and the top of the secondary keel has a through hole. The stud of an adjustable height bolt passes through the through hole and the slot from bottom to top. The width of the slot is smaller than the outer diameter of the nut of the adjusting bolt, and the length of the slot is larger than the diameter of the stud of the adjusting bolt. A rectangular hanging shaft that matches the opening size of the U-shaped steel plate is fixedly connected to the side of the curtain wall panel closest to the interior. The curtain wall panel is hung on the corresponding secondary keel by cooperating with the U-shaped steel plate through the rectangular hanging shaft. The bottom of the rectangular hanging shaft contacts the top of the stud of the adjusting bolt. Among the several curtain wall panels, adjacent curtain wall panels in the horizontal direction are plugged into each other, and adjacent curtain wall panels in the vertical direction are plugged into each other. The on-site nailing process can be eliminated through a hook-and-loop connection, reducing installation difficulty. Even after hooking, multiple adjustments can still be made to ensure more precise installation of the curtain wall panels and improve installation efficiency. Furthermore, adjacent curtain wall panels in both the horizontal and vertical directions use an interlocking method, combined with a multi-dimensional adjustment structure, to minimize the gap size between adjacent panels, improve the surface flatness of the curtain wall system, and enhance the visual effect. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the end section of the first metal sandwich panel in the plug-in adjustable metal sandwich panel curtain wall system provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the end section of the second metal sandwich panel in the plug-in adjustable metal sandwich panel curtain wall system provided in an embodiment of the present invention. Figure 3 A schematic diagram of the structure of the U-shaped steel plate in the plug-in adjustable metal sandwich panel curtain wall system provided in an embodiment of the present invention; Figure 4 The bottom top view of the U-shaped steel plate in the plug-in adjustable metal sandwich panel curtain wall system provided in the embodiment of the present invention; Figure 5 This is a schematic diagram of the installation of a rectangular hanging shaft in the adjustable metal sandwich panel curtain wall system provided in an embodiment of the present invention. Figure 6 This is a schematic diagram of the installation of the curtain wall panel in the plug-in adjustable metal sandwich panel curtain wall system provided in an embodiment of the present invention. Figure 7 This is a schematic diagram of the installation of the curtain wall panel in the horizontal direction of the plug-in type adjustable metal sandwich panel curtain wall system provided in the embodiment of the present invention. Figure 8 This is an installation diagram of the curtain wall panel vertically inserted into the plug-in type adjustable metal sandwich panel curtain wall system provided in an embodiment of the present invention. Figure 9 This is a schematic diagram of the installation of the limiting block in the adjustable metal sandwich panel curtain wall system provided in an embodiment of the present invention. Figure 10 This is a schematic diagram of the sealing function in the adjustable metal sandwich panel curtain wall system provided in an embodiment of the present invention.

[0019] Reference numerals: 1. Main keel; 2. Secondary keel; 3. Curtain wall panel; 31. First metal sandwich panel; 311. Limiting part; 312. First groove; 313. Second groove; 32. Second metal sandwich panel; 321. Step part; 322. Protrusion part; 4. U-shaped steel plate; 41. Strip hole; 5. Rectangular hanging shaft; 6. Adjusting bolt; 7. First metal slot; 8. First sealing strip; 9. Second metal slot; 10. Second sealing strip; 11. First embedded metal Components: 111. First embedded part; 112. First slot mounting part; 12. Second embedded metal plate; 121. Second embedded part; 122. Second slot mounting part; 13. Second isolation gasket; 14. Third embedded metal plate; 141. First straight section; 142. First inclined section; 143. Second straight section; 144. Second inclined section; 145. Third straight section; 15. Angle steel connector; 16. Third isolation gasket; 17. EPDM plug. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and, or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and, or collections thereof.

[0022] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "linking," "fixing," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. When an component is referred to as being "on" or "below" another component, the component can be located "directly" or "indirectly" on the other component, or there may be one or more intermediary components. The terms "first," "second," "third," etc., are only for the convenience of describing this technical solution and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first," "second," "third," etc., may explicitly or implicitly include one or more of that feature. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0023] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0024] It should also be further understood that the terms “and” and “or” as used in this specification and the appended claims refer to any combination of one or more of the associated listed items and all possible combinations, and include such combinations.

[0025] like Figures 1 to 10 As shown, this embodiment of the invention discloses a plug-in type adjustable metal sandwich panel curtain wall system, wherein, Figure 1A schematic diagram of the end section of the first metal sandwich panel in the plug-in adjustable metal sandwich panel curtain wall system provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the end section of the second metal sandwich panel in the plug-in adjustable metal sandwich panel curtain wall system provided in an embodiment of the present invention. Figure 3 A schematic diagram of the structure of the U-shaped steel plate in the plug-in adjustable metal sandwich panel curtain wall system provided in an embodiment of the present invention; Figure 4 The bottom top view of the U-shaped steel plate in the plug-in adjustable metal sandwich panel curtain wall system provided in the embodiment of the present invention; Figure 5 This is a schematic diagram of the installation of a rectangular hanging shaft in the adjustable metal sandwich panel curtain wall system provided in an embodiment of the present invention. Figure 6 This is a schematic diagram of the installation of the curtain wall panel in the plug-in adjustable metal sandwich panel curtain wall system provided in an embodiment of the present invention. Figure 7 This is a schematic diagram of the installation of the curtain wall panel in the horizontal direction of the plug-in type adjustable metal sandwich panel curtain wall system provided in the embodiment of the present invention. Figure 8 This is an installation diagram of the curtain wall panel vertically inserted into the plug-in type adjustable metal sandwich panel curtain wall system provided in an embodiment of the present invention. Figure 9 This is a schematic diagram of the installation of the limiting block in the adjustable metal sandwich panel curtain wall system provided in an embodiment of the present invention. Figure 10 This is a schematic diagram of the sealing function in the adjustable metal sandwich panel curtain wall system provided in an embodiment of the present invention.

[0026] See also Figures 1 to 10 The adjustable metal sandwich panel curtain wall system includes a vertical main keel 1, horizontal secondary keels 2, and several curtain wall panels 3. The secondary keels 2 are fixedly connected to the main keel 1. The top of the secondary keel 2 is provided with an upward-opening U-shaped steel plate 4. The bottom of the U-shaped steel plate 4 has a slotted hole 41. The top of the secondary keel 2 has a through hole. The studs of the height-adjustable adjusting bolts 6 are inserted from bottom to top into the through hole and the slotted hole 41. The width of the slotted hole 41 is smaller than the outer diameter of the nut of the adjusting bolt 6. The length of 41 is greater than the diameter of the stud of the adjusting bolt 6; a rectangular hanging shaft 5 that matches the opening size of the U-shaped steel plate 4 is fixedly connected to the side of the curtain wall panel 3 closest to the interior. The curtain wall panel 3 is hung on the corresponding secondary keel 2 by the rectangular hanging shaft 5 cooperating with the U-shaped steel plate 4. The bottom of the rectangular hanging shaft 5 contacts the top of the stud of the adjusting bolt 6; among several curtain wall panels 3, two adjacent curtain wall panels 3 in the horizontal direction are interlocked with each other, and two adjacent curtain wall panels 3 in the vertical direction are interlocked with each other.

[0027] In this embodiment, the main keel 1 is a steel rectangular tube column, the specific number of which is designed according to the perimeter or span of the building. The secondary keel 2 is a C-shaped steel beam, which is fixedly connected to both sides of the main keel 1. In the height direction of the main keel 1, the corresponding number of secondary keels 2 can be set according to the design requirements. Specifically, the vertical plate of the corner bracket can be fixedly connected to the side wall of the main keel 1, and the horizontal plate of the corner bracket can be fixedly connected to the fixed wall of the secondary keel 2 to fix the secondary keel 2 and the main keel 1. The corner bracket can be bolted or welded when connected to the main keel 1 and the secondary keel 2. The curtain wall panel 3 is a metal sandwich panel, which is a composite building material with metal sheet as the face material and core material (rock wool, polyurethane, etc.) as the filler, and has excellent thermal insulation and mechanical strength. The U-shaped steel plate 4 is made of Q235 steel plate. Four U-shaped steel plates 4 are evenly distributed along the length of each metal sandwich panel. The number of rectangular hanging shafts 5 can be the same as the number of U-shaped steel plates 4, and the length of a single rectangular hanging shaft 5 is greater than the length of a single U-shaped steel plate 4. The through-hole at the top of the secondary keel 2 is centered in its width direction. The U-shaped steel plate 4 serves as a hanging point. By inserting a rectangular hanging shaft 5, whose size is adapted to (adapted but not exactly equal to) its opening, the curtain wall panel 3 is hung on the secondary keel 2. The two sides of the U-shaped steel plate 4 act as front-to-back limits for the rectangular hanging shafts 5, restricting the front-to-back movement of the curtain wall panel 3. The weight of the curtain wall panel 3 itself and the weight of the upper curtain wall panel 3 prevent the rectangular hanging shafts 5 from detaching from the openings of the U-shaped steel plate 4. The weight of the curtain wall panel 3 itself, the weight of the curtain wall panels 3 on both sides, and the horizontal interaction force after insertion restrict its lateral movement. Adjustable bolts 6, with adjustable height, are inserted from bottom to top through the top of the secondary keel 2 and the bottom of the U-shaped steel plate 4. The bottom of the rectangular hanging shaft 5 contacts the top of the adjusting bolts 6. Adjusting the height of the adjusting bolts 6 adjusts the installation elevation of the curtain wall panel 3. Specifically, the adjusting bolts 6 can be adjusted from the indoor side, through the opening at the bottom of the secondary keel 2. Since the length of the slot 41 at the bottom of the U-shaped steel plate 4 is greater than the stud diameter of the adjusting bolts 6, the relative position of the U-shaped steel plate 4 and the adjusting bolts 6 can be adjusted by loosening the nuts of the adjusting bolts 6, thereby adjusting the horizontal hanging position of the curtain wall panel 3. Among them, the strip hole 41 has at least two extending directions. For example, the strip hole 41 can be a cross-shaped strip hole 41, a T-shaped strip hole 41, or an L-shaped strip hole 41, so that the installation of the curtain wall panel 3 in the horizontal dimension can be adjusted in at least two directions. Since the top elevation of the adjusting bolt 6 can be adjusted up or down, the installation of the curtain wall panel 3 in the vertical dimension can also be adjusted in two directions to adjust parameters such as the size of the through gap between the curtain wall panels 3 and the flatness of the curtain wall panel 3.

[0028] Thus, in this embodiment, the on-site nailing process can be eliminated by using a hook-and-loop method during the installation of the curtain wall panel 3, reducing installation difficulty. Furthermore, after hooking, adjustments can still be made in multiple dimensions to ensure more precise installation of the curtain wall panel 3 and improve installation efficiency. Adjacent curtain wall panels 3 in both the horizontal and vertical directions are interlocked, combined with a multi-dimensional adjustment structure, to minimize the gap size between adjacent curtain wall panels 3, improve the surface flatness of the curtain wall system, and enhance the visual effect.

[0029] In one embodiment, a plurality of curtain wall panels 3 include adjacent first metal sandwich panels 31 and second metal sandwich panels 32; the first metal sandwich panel 31 is recessed inward at one end near the second metal sandwich panel 32 to form a limiting part 311 and a second groove 313, and the limiting part 311 is recessed inward at one end near the second groove 313 to form a first groove 312; the second metal sandwich panel 32 includes a stepped part 321 and a protruding part 322 at one end near the first metal sandwich panel 31, the stepped part 321 cooperates with the limiting part 311, and the protruding part 322 is inserted into the second groove 313; a first metal slot 7 is fixedly provided in the first groove 312, the opening of the first metal slot 7 faces the stepped part 321, and the first metal slot 7 is fully provided with a first sealing strip 8; the end of the protruding part 322 is fixedly connected to a second metal slot 9, the opening of the second metal slot 9 faces the wall surface of the second groove 313, and the second metal slot 9 is fully provided with a second sealing strip 10.

[0030] It should be noted that "full coverage" means that the metal slots are macroscopically covered so that the adhesive strip can overflow the opening of the metal slots. This does not contradict the later statement that "a tiny gap is set at the overlap of the first sealing strip 8 in the first metal slot 7". The tiny gap is a microscopic gap.

[0031] In this embodiment, the first metal sandwich panel 31 and the second metal sandwich panel 32 can be adjacent in the horizontal direction or adjacent in the vertical direction. The limiting part 311 has two surfaces, wherein one end of the first surface is connected to the outer surface of the first metal sandwich panel 31, the other end of the first surface is connected to one end of the second surface, and the middle part of the second surface is recessed inward to form a first groove 312.

[0032] The stepped portion 321 has two surfaces, one end of the first surface is connected to the outer surface of the second metal sandwich panel 32, and the other end of the first surface is connected to one end of the second surface. Both the first groove 312 and the second groove 313 have two side walls and a bottom wall. The opening direction of the second groove 313 is perpendicular to that of the first groove 312. The opening direction of the first metal slot in the first groove 312 is the same as the opening direction of the first groove 312, that is, the opening of the first groove 312 and the opening of the first metal slot 7 face the second surface of the step portion 321. When the first metal sandwich panel 31 and the second metal sandwich panel 32 are inserted, or when subjected to a load in the corresponding direction, the first metal sandwich panel 31 and the second metal sandwich panel 32 will undergo a certain degree of relative displacement. The second surface of the limiting portion 311 and the second surface of the step portion 321 will generate dynamic friction. The first sealing strip 8 is fully provided in the first metal slot 7, which can greatly reduce the noise generated by the friction between the two metal sandwich panels. In addition, the first sealing strip 8 can also improve the sealing performance between the first metal sandwich panel 31 and the second metal sandwich panel 32.

[0033] Similarly, when the first metal sandwich panel 31 and the second metal sandwich panel 32 are inserted, or when subjected to a load in the corresponding direction, the wall surface of the protrusion 322 and the side wall of the second groove 313 will also generate dynamic friction. Therefore, by providing a second metal slot 9 with an opening facing the wall surface of the second groove 313, and fully installing a second sealing strip 10 in the second metal slot 9, the noise generated by the friction between the two metal sandwich panels can be greatly reduced. Furthermore, the second sealing strip 10 can also improve the sealing performance between the first metal sandwich panel 31 and the second metal sandwich panel 32.

[0034] The first sealing strip 8 and the second sealing strip 10 can be EPDM rubber strips. The first metal sandwich panel 31 and the second metal sandwich panel 32 can be steel sandwich panels.

[0035] It should be noted that the first metal sandwich panel 31 and the second metal sandwich panel 32 can be any two adjacent metal sandwich panels in the curtain wall panel 3. Furthermore, when the objects being inserted are different, the second metal sandwich panel 32 can also serve as the first metal sandwich panel 31, and vice versa. For example, when installing the first ring of curtain wall panels 3 from left to right, the first metal sandwich panel is used as the first metal sandwich panel 31, and the second metal sandwich panel as the second metal sandwich panel 32. When installing the third metal sandwich panel, the second metal sandwich panel is used as the first metal sandwich panel 31, and the third metal sandwich panel as the second metal sandwich panel 32, and so on. The same principle applies to vertical installation. That is, the structures at both ends of each metal sandwich panel are different. One end forms a limiting part 311, a first groove 312, and a second groove 313, while the other end forms a step part 321 and a protrusion.

[0036] In one embodiment, the first metal slot 7 is a single-sided slot, and a tiny gap (microscopic gap, not shown in the figure) is provided at the overlap of the first sealing strip 8 in the first metal slot 7 so that the first sealing strip 8 forms a watertight line; the end of the protrusion 322 is fixedly connected to the second metal slot 9, which is a double-sided slot, and the second sealing strip 10 in the second metal slot 9 is tightly overlapped so that the second sealing strip 10 forms an airtight line. The first sealing strip 8 is closer to the outdoor side than the second sealing strip 10 so that the cavity between the first sealing strip 8 and the second sealing strip 10 forms an isobaric cavity.

[0037] In this embodiment, the first metal slot 7 is a single-sided slot, meaning it has a single-sided opening. The first sealing strip 8 inside is mainly used to seal the gap between the second surface of the limiting part 311 and the second surface of the step part 321, forming a watertight line for waterproofing. The second metal slot 9 consists of two sub-metal slots with opposite openings. The second sealing strip 10 inside is mainly used to seal the gap between the protrusion and the second groove 313. The tightness and amount of the second sealing strip 10 are higher than those of the first sealing strip 8. The second sealing strip 10 forms an airtight line for preventing air from entering. In addition, the curtain wall panel 3 may also be provided with a venting groove or pressure relief hole (not shown in the figure) that communicates with the cavity between the first sealing strip 8 and the second sealing strip 10. The cavity between the first sealing strip 8 and the second sealing strip 10 forms an isobaric cavity. That is, when the first metal sandwich panel 31 and the second metal sandwich panel 32 are inserted together, there is a gap between them. The first sealing strip 8 and the second sealing strip 10 only seal the gap at their respective positions. The gap between the first sealing strip 8 and the second sealing strip 10 forms a cavity. Since the first sealing strip 8 forms a watertight line, its sealing performance does not reach the level of an airtight line, and it is closer to the outdoor side. When encountering windy and rainy weather, when the outdoor air pressure increases, some gas can enter the cavity from the position of the first sealing strip 8, so that the air pressure inside the wall is the same as the air pressure outside, thus forming an isobaric cavity. In this way, through the watertightness and isobaric principle of the first sealing strip 8 itself (i.e., preventing the outdoor air pressure from being greater than the air pressure inside the cavity and squeezing rainwater into the cavity), rainwater is effectively prevented from entering the cavity, thereby preventing rainwater from entering the room.

[0038] Specifically, in this embodiment, the essence of waterproofing is to address the dual contradiction between liquid water penetration and gas flow-driven water penetration. A single sealing structure cannot simultaneously meet the functional requirements of "water blocking" and "air sealing": the watertight line needs to reserve a gas flow channel to create an isobaric environment, while the airtight line needs to be extremely sealed to block the pressure difference. The two form multiple lines of defense through "functional division of labor + synergistic coupling" to eliminate the dominant driving force of water penetration (pressure difference) from the root.

[0039] The watertight line allows some outdoor gas to enter the cavity between the airtight line and the watertight line, and this gas flow is a necessary condition for the formation of the isobaric cavity. The watertight line's "water-blocking but not gas-blocking" design allows gas to enter the cavity through two paths: (1) passive conduction path: the microscopic gaps in the watertight sealing structure (such as the tiny gaps at the overlap of the first sealing strip 8 and the capillary pores of the sealing strip itself) satisfy the gas permeation under low air pressure difference; (2) active conduction path: the pre-set ventilation grooves and pressure relief holes on the curtain wall panel 3 achieve rapid air pressure balance under high air pressure fluctuations. The entry of these gases causes the air pressure in the cavity to form a real-time dynamic coupling with the outdoor air pressure, that is, to construct an "isobaric cavity" - the "limited vapor permeability" of the watertight line is the core premise of the isobaric principle. Its design goal is to ensure gas flow efficiency while blocking liquid water, and to avoid the isobaric cavity losing its waterproof performance due to air pressure imbalance.

[0040] The ambient air pressure from the outside acts on the outer surface of the watertight line. Through the gas conduction channel of the watertight line, the air pressure in the isobaric chamber (the enclosed space between the airtight line and the watertight line) is dynamically coupled in real time, achieving a pressure balance between the isobaric chamber and the outside. At this time, the dominant term (pressure difference) in the permeation driving force of the liquid water at the watertight line interface approaches zero. The driving force is suppressed by the interfacial tension design of the watertight line, ultimately ensuring that the effective permeation potential energy of the liquid water is less than or equal to the barrier threshold of the watertight line.

[0041] As a secondary barrier, the airtight line, through its gas permeation inhibition capability, blocks gas exchange between the isobaric cavity and the indoor side, preventing the formation of a new pressure gradient inside the cavity and thus maintaining the pressure stability of the isobaric cavity, preventing the disruption of the isobaric balance due to airflow fluctuations between the indoor and outdoor areas. This system, through the synergistic coupling of the "water-blocking and air-guiding dual function of the watertight line" and the "air-sealing and pressure-stabilizing dual function of the airtight line," transforms the traditional "passive barrier" approach to waterproofing into a highly efficient waterproofing mode that "actively counteracts the driving force of permeation." Its waterproofing reliability depends on the pressure response rate of the isobaric cavity, the gas-liquid separation efficiency of the watertight line, and the pressure maintenance capability of the airtight line. These three factors together constitute the thermodynamic equilibrium system of this curtain wall waterproofing, achieving long-term stable waterproofing performance.

[0042] The core advantage of this plug-in adjustable metal sandwich panel curtain wall system lies in the fact that by actively canceling the air pressure gradient, the dominant driving force of water penetration is lost, thereby avoiding the shortcomings of traditional single sealing that relies on the degradation of material performance. Its waterproof life is close to the life of the curtain wall structure, which is a core waterproof technology path with extremely high efficiency for metal sandwich panel curtain walls in high-rise, high wind pressure and high humidity environments.

[0043] Furthermore, an EPDM (ethylene propylene diene monomer) plug 17 can be filled between the first surface of the limiting part 311 and the first surface of the step part 321 to form a dust-tight line for dust prevention. This creates three lines of defense, effectively improving the sealing performance of the curtain wall system and providing the building with high dust tightness, air tightness, and water tightness, meeting the requirements of high sealing performance and high energy efficiency in buildings.

[0044] In one embodiment, the plug-in type adjustable metal sandwich panel curtain wall system further includes a first embedded metal plate 11 and a second embedded metal plate 12. The first embedded metal plate 11 includes a first embedded part 111 located inside the first metal sandwich panel 31 and a first slot mounting part 112 located inside the first groove 312. The first metal slot 7 is fixedly connected to the first slot mounting part 112 by self-tapping screws. The second embedded metal plate 12 includes a second embedded part 121 located inside the second metal sandwich panel 32 and a second slot mounting part 122 located at one end of the protrusion 322. The second metal slot 9 is fixedly connected to the second slot mounting part 122 by self-tapping screws.

[0045] In this embodiment, the first embedded metal plate 11 is embedded at one end of the first metal sandwich panel 31 near the second metal sandwich panel 32. Specifically, the first embedded part 111 is arched and embedded inside the corresponding positions of the first embedded metal plate 11 and the first groove 312. The bottom wall of the first groove 312 has a through hole, and the first slot mounting part 112 is fixedly connected to the first embedded part 111 through the through hole. The cross-section of the first slot mounting part 112 is T-shaped. The end face of the first metal slot 7 is opposite to the end face of the first slot mounting part 112, and the first metal slot 7 and the first slot mounting part 112 are fixedly connected from the inside of the first metal slot 7 by self-tapping screws.

[0046] The second embedded metal plate 12 is embedded at one end of the second metal sandwich panel 32 near the first metal sandwich panel 31. Specifically, the second embedded part 121 is arched and embedded inside the corresponding positions of the second embedded metal plate 12 and the protrusion 322. The end face of the protrusion has a through hole, through which the second slot mounting part 122 is fixedly connected to the second embedded part 121. The cross-section of the second slot mounting part 122 is straight, with two opposite end faces. The end face of one sub-slot of the second metal slot 9 is opposite to one end face of the second slot mounting part 122, and the end face of the other sub-slot is opposite to the other end face of the second slot mounting part 122. The second metal slot 9 and the second slot mounting part 122 are fixedly connected from the inside of the two sub-slots by self-tapping screws.

[0047] The self-tapping screws are countersunk stainless steel self-tapping screws. All metal plate embeddings, metal slot installations, and sealing strip installations are prefabricated in the factory, saving on-site construction time.

[0048] In one embodiment, the first metal slot 7 and the first embedded metal plate 11 are made of different metal materials, and a first isolation gasket (not shown in the figure) is provided between the first metal slot 7 and the first slot mounting part 112; the second metal slot 9 and the second embedded metal plate 12 are made of different metal materials, and a second isolation gasket 13 is provided between the second metal slot 9 and the second slot mounting part 122.

[0049] In this embodiment, the first metal slot 7 is an aluminum alloy slot, the first embedded metal plate 11 is an embedded steel plate, and the first isolation gasket is a 1mm thick nylon isolation gasket. The first isolation gasket is set between the end face of the first metal slot 7 and the end face of the first slot mounting part 112, that is, it is set before the first metal slot 7 is fixed. The first isolation gasket is used to prevent corrosion due to potential difference between different metals, so as to improve the overall service life and safety of the curtain wall system.

[0050] Similarly, the two sub-slots of the second metal slot 9 are aluminum alloy slots, the second embedded metal plate 12 is an embedded steel plate, and the second isolation gasket 13 is a 1mm thick nylon isolation gasket. The second isolation gasket 13 is disposed between the end face of the second metal slot 9 and the end face of the second slot mounting part 122 (this part is not shown in the figure) and between the side of the second metal slot 9 and the end face of the protrusion. The second isolation gasket 13 is used to prevent corrosion due to potential difference between different metals.

[0051] In one embodiment, the plug-in type adjustable metal sandwich panel curtain wall system further includes an angle steel connector 15. A third embedded metal plate 14 is provided in the curtain wall panel 3. One plate of the angle steel connector 15 is fixedly connected to the third embedded metal plate 14 by a bolt assembly to fix it to the curtain wall panel 3. The end of the angle steel connector 15 away from the curtain wall panel 3 is welded to a rectangular hanging shaft 5.

[0052] In this embodiment, the angle steel connector 15 can be an L50 angle steel, and the third embedded metal plate 14 is an embedded steel plate. The third embedded metal plate 14 includes a first straight section 141, a first inclined section 142, a second straight section 143, a second inclined section 144, and a third straight section 145. Inside the curtain wall panel 3, the first straight section 141 is fitted against the inner wall of the curtain wall panel 3 near the exterior side. One end of the first inclined section 142 is connected to one end of the first straight section 141, and the other end of the first inclined section 142 extends towards the inner wall of the curtain wall panel 3 near the interior side and connects with the second straight section 145. One end of segment 143 is connected to the second straight segment 143, which is attached to the inner wall of the curtain wall panel 3 near the interior side. The other end of the second straight segment 143 is connected to one end of the second inclined segment 144. The other end of the second inclined segment 144 extends towards the inner wall of the curtain wall panel 3 near the exterior side and is connected to one end of the third straight segment 145. The third straight segment 145 is attached to the inner wall of the curtain wall panel 3 near the exterior side. Thus, the third embedded metal plate 14 is pre-installed inside the curtain wall panel 3. Through holes are opened on the second straight section 143 and its corresponding side wall of the curtain wall panel 3. Through holes are also opened on one side of the angle steel connector 15. The angle steel connector 15 is fixedly connected to the curtain wall panel 3 and the third embedded metal plate 14 using M6 stainless steel bolt assemblies. Since the third embedded metal plate 14 is fixed inside the curtain wall panel 3, its first straight section 141, second straight section 143, and third straight section 145 contact the two inner walls of the curtain wall panel 3 and are supported by the first inclined section 142 and the second inclined section 144. The third embedded metal plate 14, while connecting the angle steel connector 15, also enhances the structural strength of the curtain wall panel 3. For a rectangular hanging shaft 5, two spaced and symmetrically arranged angle steel connectors 15 can be used to connect it to the curtain wall panel 3.

[0053] In one embodiment, the top of the first side of the U-shaped steel plate 4 is lower than the top of the second side. The first side is the side of the U-shaped steel plate 4 that is close to the curtain wall panel 3, and the second side is the side of the U-shaped steel plate 4 that is away from the curtain wall panel 3.

[0054] In this embodiment, the height h2 of the second side of the U-shaped steel plate 4 is greater than the height h1 of the first side, and the height h2 of the second side of the U-shaped steel plate 4 is greater than the height of the rectangular hanging shaft 5. The height h1 of the first side of the U-shaped steel plate 4 is less than the height of the rectangular hanging shaft 5 but greater than half of the height of the rectangular hanging shaft 5. On the one hand, this limits the front-rear direction of the rectangular hanging shaft 5; on the other hand, when the rectangular hanging shaft 5 is embedded in the opening of the U-shaped steel plate 4, a portion of the rectangular hanging shaft 5 is left on the side closest to the curtain wall for welding to one end of the angle steel connector 15. For example, the height h2 of the second side of the U-shaped steel plate 4 is 110mm, the height h1 of the first side is 60mm, and the height of the rectangular hanging shaft 5 is 80mm. Considering that the top of the adjusting bolt 6 supports the rectangular hanging shaft 5 inside the U-shaped steel plate 4, the height of the rectangular hanging shaft 5 minus the height h1 of the first side, plus the height of the top of the adjusting bolt 6 protruding from the bottom of the U-shaped steel plate 4, should be greater than or equal to the height of the angle steel connector 15 (e.g., 50mm).

[0055] Among them, the rectangular hanging shaft 5 can be a steel rectangular tube with a cross-sectional dimension of 80 (height) × 60 (width) × 4 (thickness) mm and a length of 200 mm.

[0056] In one embodiment, a third isolation pad 16 is attached to the two inner sides of the U-shaped steel plate 4.

[0057] In this embodiment, the third isolation gasket 16 can be a 2mm thick nylon isolation gasket. The U-shaped steel plate 4 has a thickness of 5mm, a bottom edge net width b of 65mm, and a length L of 80mm. The third isolation gasket 16 is used to significantly reduce frictional noise between metal components after installation and to prevent scratches on the anti-corrosion paint film on the surface of the metal components.

[0058] In summary, the adjustable metal sandwich panel curtain wall system with plug-in connection provided by the embodiments of the present invention has at least the following advantages: Enhance the functionality of metal sandwich panel curtain walls, overcome the shortcomings of metal sandwich panel curtain walls that only serve as simple external cladding and cannot meet the requirements for high air tightness, water tightness and energy saving, avoid the risk of water leakage in the external wall, significantly reduce friction noise between panels, and meet the needs of high sealing performance and high energy saving effect of buildings.

[0059] This invention addresses the drawback of metal sandwich panels being unable to be adjusted after installation, ensuring that the panel seams are straight and horizontal, and resolving the issue of excessively wide panel seams and poor aesthetics.

[0060] The installation method has been changed to "hook connection between board and main keel + full plug connection between boards", eliminating on-site nailing and other procedures and reducing on-site construction steps.

[0061] It has adjustable functions, which reduces the difficulty of on-site construction, improves construction efficiency, and saves working time.

[0062] This invention also provides a method for installing a curtain wall, for installing the plug-in adjustable metal sandwich panel curtain wall system disclosed in the above embodiments. The installation method includes: Based on the reference axis and horizontal elevation line of the main structure, precision instruments such as total stations, theodolites, and levels are used to accurately mark the grid lines of the curtain wall onto the main structure, completing the planar layout, horizontal layout, and panel arrangement work. First, the main keel (vertical) is installed, followed by the secondary keel (horizontal). When installing the keel, the corner brackets are first welded or bolted to the embedded plates, and then the main keel is reliably connected to the corner brackets. After the main keel is installed, its verticality and flatness are adjusted, and after acceptance, the secondary keel is installed. Use adjusting bolts to install U-shaped steel plates on the horizontal keel. For each curtain wall panel, multiple U-shaped steel plates are evenly arranged along its length, for example, four. The third isolation gasket can be pre-attached to the two inner walls of the U-shaped steel plate.

[0063] The rectangular hanging shaft is fixedly installed on the indoor side of the curtain wall panel; The first curtain wall panel of the bottom ring on each floor is hung on the corresponding U-shaped steel plate using a rectangular hanging shaft; The second curtain wall panel, which is horizontally adjacent to the first curtain wall panel, is attached to its corresponding U-shaped steel plate. Insert the end of the second curtain wall panel closest to the first curtain wall panel into the first curtain wall panel, and then complete the installation of all curtain wall panels in this circle in sequence. The elevation of the rectangular hanging shaft of the adjusting bolt at the bottom of the U-shaped steel plate is adjusted by matching the adjusting bolt with the slot at the bottom of the U-shaped steel plate, thereby adjusting the horizontal position of the U-shaped steel plate on the secondary keel to complete the adjustment of the curtain wall panel within this ring. Install and adjust the curtain wall panels around the top ring, and then complete the installation and adjustment of all curtain wall panels in sequence.

[0064] After adjustment, limit blocks can be set at both ends of the bottom of the U-shaped steel plate. The limit blocks are welded to the edges of both ends of the U-shaped steel plate and the bottom of the rectangular hanging shaft to further prevent the rectangular hanging shaft from moving.

[0065] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A plug-in type adjustable metal sandwich panel curtain wall system, comprising vertical main keel, horizontal secondary keel, and a plurality of curtain wall panels, wherein the secondary keel is fixedly connected to the main keel, characterized in that, The secondary keel has an upward-opening U-shaped steel plate at its top, a slotted hole at its bottom, and a through hole at its top. An adjustable bolt with a height-adjustable stud passes through both the through hole and the slotted hole from bottom to top. The width of the slotted hole is smaller than the outer diameter of the nut of the adjusting bolt, and the length of the slotted hole is greater than the diameter of the stud of the adjusting bolt. A rectangular hanging shaft, matching the opening size of the U-shaped steel plate, is fixedly connected to the side of the curtain wall panel closest to the interior. The curtain wall panel is hung on the corresponding secondary keel by the rectangular hanging shaft and the U-shaped steel plate. The bottom of the rectangular hanging shaft contacts the top of the stud of the adjusting bolt. In the plurality of curtain wall panels, horizontally adjacent curtain wall panels are interlocked, and vertically adjacent curtain wall panels are interlocked. The plurality of curtain wall panels include adjacent first metal sandwich panels and second metal sandwich panels; the first metal sandwich panel is recessed inward at one end near the second metal sandwich panel to form a limiting part and a second groove, and the limiting part is recessed inward at one end near the second groove to form a first groove; the second metal sandwich panel includes a stepped part and a protruding part at one end near the first metal sandwich panel, the stepped part cooperates with the limiting part, and the protruding part is inserted into the second groove; a first metal slot is fixedly provided in the first groove, the opening of the first metal slot faces the stepped part, and the first metal slot is fully filled with a first sealing strip; the end of the protruding part is fixedly connected to a second metal slot, the opening of the second metal slot faces the wall of the second groove, and the second metal slot is fully filled with a second sealing strip; The first metal slot is a single-sided slot, and a tiny gap is provided at the overlap of the first sealing strip in the first metal slot to form a watertight line for the first sealing strip; the end of the protrusion is fixedly connected to a second metal slot, which is a double-sided slot, and the second sealing strip in the second metal slot overlaps tightly to form an airtight line for the second sealing strip; the first sealing strip is closer to the outdoor side than the second sealing strip so that the cavity between the first sealing strip and the second sealing strip forms an isobaric cavity.

2. The adjustable metal sandwich panel curtain wall system with plug-in connection according to claim 1, characterized in that, The curtain wall system further includes a first embedded metal plate and a second embedded metal plate. The first embedded metal plate includes a first embedded part located inside the first metal sandwich panel and a first slot mounting part located inside the first groove. The first metal slot is fixedly connected to the first slot mounting part by self-tapping screws. The second embedded metal plate includes a second embedded part located inside the second metal sandwich panel and a second slot mounting part located at one end of the protrusion. The second metal slot is fixedly connected to the second slot mounting part by self-tapping screws.

3. The adjustable metal sandwich panel curtain wall system with plug-in connection according to claim 2, characterized in that, The first metal slot and the first embedded metal plate are made of different metal materials, and a first isolation gasket is provided between the first metal slot and the first slot mounting part; the second metal slot and the second embedded metal plate are made of different metal materials, and a second isolation gasket is provided between the second metal slot and the second slot mounting part.

4. The adjustable metal sandwich panel curtain wall system with plug-in connection according to claim 1, characterized in that, The curtain wall system also includes angle steel connectors. A third embedded metal plate is provided in the curtain wall panel. One side of the angle steel connector is fixedly connected to the third embedded metal plate by a bolt assembly to fix it to the curtain wall panel. The end of the angle steel connector away from the curtain wall panel is welded to the rectangular hanging shaft.

5. The adjustable metal sandwich panel curtain wall system with plug-in connection according to claim 4, characterized in that, The top of the first side of the U-shaped steel plate is lower than the top of the second side. The first side is the side of the U-shaped steel plate that is closer to the curtain wall panel, and the second side is the side of the U-shaped steel plate that is farther away from the curtain wall panel.

6. The adjustable metal sandwich panel curtain wall system with plug-in connection according to claim 1, characterized in that, A third isolation pad is attached to the two inner sides of the U-shaped steel plate.

7. The adjustable metal sandwich panel curtain wall system with plug-in connection according to claim 1, characterized in that, The perforation is one of the following: cross-shaped perforation, T-shaped perforation, or L-shaped perforation.

8. A method for installing a curtain wall, characterized in that, For installing the plug-in adjustable metal sandwich panel curtain wall system according to any one of claims 1 to 7, the installation method includes: U-shaped steel plates are installed on the secondary keel using adjusting bolts, wherein multiple U-shaped steel plates are evenly arranged along the length of each curtain wall panel. The rectangular hanging shaft is fixedly installed on the indoor side of the curtain wall panel; The first curtain wall panel of the bottom ring on each floor is hung on the corresponding U-shaped steel plate using a rectangular hanging shaft; The second curtain wall panel, which is horizontally adjacent to the first curtain wall panel, is attached to its corresponding U-shaped steel plate. Insert the end of the second curtain wall panel closest to the first curtain wall panel into the first curtain wall panel, and then complete the installation of all curtain wall panels in this circle in sequence. Adjust the elevation of the rectangular hanging shaft by adjusting the adjusting bolts at the bottom of the U-shaped steel plate, and adjust the horizontal position of the U-shaped steel plate on the secondary keel by cooperating the adjusting bolts with the slots at the bottom of the U-shaped steel plate, so as to complete the adjustment of the curtain wall panel within this circle; Install and adjust the curtain wall panels around the top ring, and then complete the installation and adjustment of all curtain wall panels in sequence.

Images