Fabricated curtain wall structure and mounting method thereof

Abstract

The invention discloses a fabricated curtain wall structure and a mounting method thereof, and belongs to the technical field of building curtain walls, the fabricated curtain wall structure comprises a plurality of independent curtain wall modules, and each module comprises a fixed base, a spherical hinge assembly, a curtain wall framework, a connecting assembly, a quick release assembly and a curtain wall panel; multi-dimensional angle and telescopic adjustment is achieved through the spherical hinge assembly, a clamping and locking mechanism is adopted in the connecting assembly, rapid disassembly and assembly of a panel are achieved through pressing, rotating and clamping of the rapid disassembly assembly, and the curtain wall panel is provided with a trapezoidal sealing groove which is in interference fit with a U-shaped sealing piece. The installation method is implemented in a standardized mode according to the steps of base layer pretreatment, skeleton initial installation and splicing, panel installation and sealing treatment. The prefabricated building joint is suitable for multi-dimensional deformation of buildings, firm in splicing, efficient in disassembly and assembly, reliable in sealing, short in construction period and suitable for various prefabricated buildings.

Description

Technical Field

[0001] This invention relates to the field of building curtain wall technology, and in particular to a prefabricated curtain wall structure and its installation method. Background Technology

[0002] Prefabricated buildings have become the mainstream development direction of the construction industry due to their advantages such as high construction efficiency and green environmental protection. As the core enclosure component of prefabricated buildings, the structural rationality of prefabricated curtain walls directly affects the safety, sealing and construction efficiency of the building.

[0003] Existing prefabricated curtain wall structures suffer from the following technical challenges: Poor connection adjustability: Traditional curtain wall fixing bases and frames are mostly rigidly connected, allowing only minor adjustments in a single direction. This fails to accommodate multi-dimensional deformations caused by building settlement and thermal expansion / contraction, easily leading to stress concentration at nodes, frame deformation, and even panel breakage. Some structures using ball joints have limited adjustment angles (typically ≤5°) and cannot precisely control expansion / contraction distances, resulting in insufficient adaptability. Insecure frame splicing: Adjacent horizontal and vertical beams are often directly fixed with bolts or use simple interlocking structures. Bolting is cumbersome and inefficient, and simple interlocking structures lack locking mechanisms, making them prone to loosening due to vibration, wind loads, and other external forces, affecting the overall stability of the curtain wall. Inconvenient panel installation and removal: Curtain wall panels are often fixed to the frame with bolt groups. Installation requires aligning bolt holes one by one, and disassembly requires loosening bolts one by one, resulting in low construction efficiency and potential damage to surrounding structures or seals during later maintenance (such as panel replacement or internal repairs). Summary of the Invention

[0004] The purpose of this invention is to provide a prefabricated curtain wall structure and installation method that is flexible in adjustment, firmly spliced, convenient to install, and reliably sealed, aiming to improve the overall performance of prefabricated curtain walls and adapt to the development needs of modern prefabricated buildings.

[0005] To achieve the above objectives, the present invention provides a prefabricated curtain wall structure, comprising several independent curtain wall modules. Each curtain wall module includes at least two fixed bases symmetrically arranged along its centerline. A plurality of rotatably connected connecting nuts are uniformly embedded on the lower surface of each fixed base, and ball joint assemblies adapted to the positions of the connecting nuts are correspondingly provided on the upper surface. A curtain wall frame is detachably connected to each fixed base via the ball joint assemblies. The curtain wall frame is formed by vertically intersecting horizontal and vertical beams. One end of each horizontal beam has a connecting assembly, and the other end has a connecting groove adapted to the connecting assembly. One end of each vertical beam has the connecting assembly, and the other end has the connecting groove. Adjacent horizontal or vertical beams are fixedly engaged with the connecting groove via the connecting assembly. Quick-release assemblies are fixedly provided on the upper surface of the intersection of the horizontal and vertical beams. The curtain wall panel is detachably connected to the curtain wall frame via the quick-release assemblies. Sealing grooves are provided around the perimeter of the upper surface of the curtain wall panel.

[0006] Preferably, the connecting nut is used for threaded connection with a pre-set connecting anchor on the building exterior wall to fix the fixed base to the building exterior wall; the ball joint assembly includes a ball joint fixing seat fixed to the upper surface of the fixed base, the upper end of the ball joint fixing seat has a spherical slot, a spherical protrusion is fitted in the spherical slot with clearance, and a connecting rod is vertically fixed to the upper end of the spherical protrusion; a cross-shaped groove is opened at the upper opening of the ball joint fixing seat, and the connecting rod passes through the cross-shaped groove to realize the micro-adjustment of the connecting rod in the horizontal and vertical directions of ±5°-±15°; the end of the connecting rod away from the spherical protrusion passes through a limiting hole opened on the surface of the telescopic rod, the surface of the connecting rod has an external thread, and a first adjusting nut is sleeved at the connection between the telescopic rod and the connecting rod. The first adjusting nut is threadedly connected to the connecting rod to lock the relative position of the telescopic rod and the connecting rod and adjust the telescopic distance between them; the end of the telescopic rod away from the connecting rod is fixed to the lower surface of the intersection of the horizontal beam and the vertical beam.

[0007] Preferably, the connecting assembly includes a connecting screw, one end of which passes through a connecting hole opened along the length of the end of the crossbeam. A second adjusting nut is fitted at the connection between the crossbeam and the connecting screw, and the second adjusting nut is threadedly connected to the connecting screw to adjust the extension distance of the connecting screw and lock it in place. A fixing protrusion is integrally formed at the end of the connecting screw away from the crossbeam. The upper and lower surfaces of the fixing protrusion are symmetrically provided with placement grooves. A wedge-shaped locking block is elastically connected to the placement groove through a return spring. The exposed end of the wedge-shaped locking block is provided with a guide slope. The connection structure between the connecting assembly and the end of the vertical beam is the same as the connection structure between the connecting assembly and the end of the crossbeam.

[0008] Preferably, the inner wall of the connecting groove has symmetrically formed snap-fit ​​grooves on its upper and lower surfaces that are adapted to the wedge-shaped snap-fit ​​block. A push block is slidably connected in the snap-fit ​​groove. One end of the push block passes through the snap-fit ​​groove and extends to the outside of the connecting groove, and a button is fixedly connected to this end. The other end of the push block abuts against the wedge-shaped snap-fit ​​block. A return spring is sleeved on the push block. The two ends of the return spring are fixedly connected to the button and the outer wall of the connecting groove, respectively, for driving the push block to return to its original position.

[0009] Preferably, the quick-release assembly includes a quick-release base, which is fixed to the upper surface at the intersection of the horizontal beam and the vertical beam. The upper surface of the quick-release base has a circular opening and a rectangular limiting groove. The circular opening is located at the center of the quick-release base, and the central axis of the rectangular limiting groove coincides with the axis of the circular opening. The opening length of the rectangular limiting groove is equal to the diameter of the circular limiting groove inside the quick-release base. The circular limiting groove communicates with both the circular opening and the rectangular limiting groove, and the diameter of the circular limiting groove is larger than the diameter of the circular opening.

[0010] Preferably, the quick-release assembly further includes a linkage rod, the lower end of which is adapted to both a circular opening and a rectangular limiting groove. A fixing block is integrally formed symmetrically on the outer surface of the lower end of the linkage rod, and the fixing block slides in cooperation with the rectangular limiting groove. The upper end of the linkage rod passes through the inside of the connecting sleeve and slides in cooperation with the inner wall of the connecting sleeve. A wavy groove is formed on the inner wall of the upper end of the connecting sleeve. A slider is symmetrically provided on the outer surface of the upper end of the linkage rod, and the slider slides in the wavy groove. A fixing rod is fixedly provided at the center of the upper surface of the connecting sleeve. The end of the fixing rod away from the connecting sleeve passes through a through hole on the surface of the curtain wall panel. A compression spring is also provided on the upper surface of the connecting sleeve. The compression spring covers the outer circumference of the fixing rod, and the two ends of the compression spring are fixed to the upper surface of the connecting sleeve and the lower surface of the curtain wall panel, respectively.

[0011] Preferably, the upper part of the fixing rod is integrally formed with a limiting block, and the inner wall of the through hole on the surface of the curtain wall panel is provided with a fixing groove extending along the axis of the fixing rod. The limiting block is slidably disposed in the fixing groove to limit the displacement of the fixing rod in the direction perpendicular to the curtain wall panel.

[0012] Preferably, the sealing groove has a trapezoidal cross-section for interference fit with the U-shaped seal.

[0013] This invention also proposes an installation method for a prefabricated curtain wall structure, comprising the following steps: S1. Clean the debris around the connecting anchors on the exterior wall surface of the building, ensuring that the connecting anchors are exposed and free of rust; connect the fixing base to the connecting anchors through the connecting nut on the lower surface, tighten the fixing base, and ensure that the horizontal error of the fixing base is ≤2mm. S2. Connect the intersections of the horizontal and vertical beams of each curtain wall module to the connecting rods of the ball joint assembly via telescopic rods, following the order from bottom to top and from left to right; rotate the first adjusting nut to adjust the telescopic distance of the telescopic rods so that the curtain wall frame and the fixed base reach the preset distance, and then lock the first adjusting nut; finely adjust the horizontal and verticality of the horizontal and vertical beams through the cross-shaped slot of the ball joint assembly to ensure that the error of a single module frame is ≤1.5mm; S3. Rotate the second adjusting nut at the end of the beam to be spliced ​​to extend the connecting screw outwards. Insert the fixing protrusion of the beam into the connecting groove of the adjacent beam. The wedge-shaped locking block slides into the locking groove along the guide slope under the action of the return spring, achieving initial locking. Rotate the second adjusting nut in the opposite direction to drive the connecting screw to retract, tighten the adjacent beam and lock it, ensuring that the flatness error at the splice is ≤1mm. The vertical beams are spliced ​​in the same way as above until the entire curtain wall frame is formed as a whole. S4. Install the curtain wall panels in the order from bottom to top and from left to right. Align the fixing block at the lower end of the linkage rod with the rectangular limiting groove of the quick-release base and insert it. Press the fixing rod to drive the connecting sleeve to move down. The wave-shaped slide groove drives the linkage rod to rotate 90° around its own axis through the slider, so that the fixing block is locked into the circular limiting groove. The compression spring returns to its original position and tightens the connecting sleeve, realizing the locking and fixing of the curtain wall panel and the curtain wall frame. Complete the installation of all curtain wall panels in sequence to ensure that the gap between adjacent panels is uniform. S5. Align the open end of the U-shaped seal with the trapezoidal sealing groove of the adjacent curtain wall panel, and insert the U-shaped seal at a uniform speed along the length of the sealing groove to ensure that the U-shaped seal and the sealing groove are interference fit and there is no looseness.

[0014] Therefore, the present invention, employing the above-mentioned prefabricated curtain wall structure and its installation method, has the following technical advantages: (1) The ball joint assembly of the present invention achieves micro-adjustment of the connecting rod in the horizontal and vertical directions by the cooperation of the spherical protrusion and the cross-shaped slot. Combined with the telescopic adjustment function of the telescopic rod and the first adjusting nut, it can accurately adapt to the settlement, thermal expansion and contraction and other multi-dimensional deformation of the building body, disperse the stress of the nodes, and avoid the deformation of the frame and the cracking of the panel.

[0015] (2) The connection component of the present invention adopts a dual fixing mechanism of "clamping + locking". The wedge-shaped clamping block achieves quick clamping through the reset spring, and the second adjusting nut drives the connecting screw to retract to achieve tightening and locking, which significantly improves the overall stability of the curtain wall frame.

[0016] (3) The quick-release component of the present invention achieves quick installation and disassembly of the curtain wall panel through the integrated design of "press-rotate-lock". There is no need to disassemble the surrounding structure. The panel can be directly replaced or the internal structure can be inspected during later maintenance.

[0017] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of an independent curtain wall module in a prefabricated curtain wall structure according to the present invention; Figure 2 This invention relates to a prefabricated curtain wall structure. Figure 1 Enlarged view of point A in the middle; Figure 3 This is a side view of a curtain wall module in a prefabricated curtain wall structure according to the present invention; Figure 4 This invention relates to a prefabricated curtain wall structure. Figure 3 Enlarged view at point B in the middle; Figure 5 This is a schematic diagram of the disassembly of a quick-release component in a prefabricated curtain wall structure according to the present invention; Figure 6 This is a schematic diagram of the splicing of curtain wall panels in a prefabricated curtain wall structure according to the present invention; Figure 7 This is a schematic diagram of the use of a prefabricated curtain wall structure according to the present invention.

[0019] Figure Labels 1. Fixed base; 2. Connecting nut; 3. Ball joint assembly; 31. Ball joint fixing seat; 32. Spherical protrusion; 33. Connecting rod; 34. Telescopic rod; 35. First adjusting nut; 36. Cross-shaped slot; 4. Curtain wall frame; 41. Horizontal beam; 42. Vertical beam; 5. Connecting assembly; 51. Connecting screw; 52. Second adjusting nut; 53. Fixing protrusion; 54. Wedge-shaped locking block; 55. Guide slope; 6. Connecting groove; 61. Snap-fit 62. Slot; 63. Push block; 7. Button; 7. Quick release assembly; 71. Quick release base; 711. Circular opening; 712. Rectangular limiting slot; 713. Circular limiting slot; 72. Linkage rod; 721. Fixing block; 722. Slider; 73. Connecting sleeve; 731. Wavy slide groove; 74. Fixing rod; 741. Limiting block; 75. Compression spring; 8. Curtain wall panel; 81. Sealing groove; 82. Fixing groove; 9. U-shaped seal. Detailed Implementation

[0020] The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0022] like Figures 1 to 4 As shown, a prefabricated curtain wall structure includes several independent curtain wall modules. Each curtain wall module includes a fixed base 1, a ball hinge assembly 3, a curtain wall frame 4, a connecting assembly 5, a quick-release assembly 7, a curtain wall panel 8, and a sealing structure.

[0023] Each curtain wall module is symmetrically equipped with two fixed bases 1 along its center line. The fixed base 1 is made of Q235B steel plate and is 12-15mm thick. 3-4 rotatable connecting nuts 2 are evenly embedded on the lower surface. Anti-slip washers are provided at the embedding points of the connecting nuts 2 and the fixed base 1 to prevent the nuts from rotating during the connection process. Ball joint components 3 are provided on the upper surface of the fixed base 1 at the positions corresponding to the connecting nuts 2 to ensure that the fixed base 1 is subjected to balanced forces.

[0024] The ball joint assembly 3 includes a ball joint fixing seat 31, a spherical protrusion 32, a connecting rod 33, a telescopic rod 34, and a first adjusting nut 35. The ball joint fixing seat 31 is made of stainless steel and is welded to the upper surface of the fixing base 1. A spherical slot is provided at the upper end, and the spherical protrusion 32 is fitted into the spherical slot with a clearance of 1-2mm to ensure that the spherical protrusion 32 can rotate flexibly. The connecting rod 33 is vertically welded to the upper end of the spherical protrusion 32. A cross-shaped groove 36 is provided at the upper opening of the ball joint fixing seat 31, and the connecting rod 33 passes through the cross-shaped groove 36, which can realize horizontal adjustment. The telescopic rod 33 has a slight adjustment range of ±5° to ±15° in both the horizontal and vertical directions. The end of the connecting rod 33 away from the spherical protrusion 32 passes through a limiting hole on the surface of the telescopic rod 34. The surface of the connecting rod 33 is provided with external threads. A first adjusting nut 35 is fitted at the connection between the telescopic rod 34 and the connecting rod 33. The first adjusting nut 35 is threadedly connected to the connecting rod 33. By rotating the first adjusting nut 35, the telescopic distance of the telescopic rod 34 can be adjusted and the relative position of the two can be locked. The end of the telescopic rod 34 away from the connecting rod 33 is welded and fixed to the lower surface of the intersection of the horizontal beam 41 and the vertical beam 42 of the curtain wall frame 4.

[0025] The curtain wall frame 4 is formed by vertically intersecting horizontal beams 41 and vertical beams 42. Both horizontal beams 41 and vertical beams 42 are made of aluminum alloy profiles with rectangular cross sections. One end of the horizontal beam 41 is provided with a connecting component 5, and the other end is provided with a connecting groove 6 adapted to the connecting component 5. One end of the vertical beam 42 is provided with a connecting component 5 of the same structure, and the other end is provided with a connecting groove 6 of the same structure. Adjacent horizontal beams 41 or adjacent vertical beams 42 are fixed by engaging with the connecting component 5 and the connecting groove 6 to form an overall frame structure.

[0026] The connecting assembly 5 includes a connecting screw 51, a second adjusting nut 52, a fixing protrusion 53, a return spring, and a wedge-shaped locking block 54. One end of the connecting screw 51 passes through a connecting hole opened along the length of the end of the crossbeam 41. The second adjusting nut 52 is fitted at the connection between the crossbeam 41 and the connecting screw 51. The second adjusting nut 52 is threadedly connected to the connecting screw 51 and is used to adjust the extension distance of the connecting screw 51 and lock it. The end of the connecting screw 51 away from the crossbeam 41 has a fixing protrusion 53 integrally formed. The upper and lower surfaces of the fixing protrusion 53 are symmetrically provided with placement grooves. The wedge-shaped locking block 54 is elastically connected in the placement groove through the return spring. The exposed end of the wedge-shaped locking block 54 has a guide slope 55 to facilitate the insertion of the fixing protrusion 53 into the connecting groove 6. The connection structure between the connecting assembly 5 and the end of the vertical beam 42 is the same as that of the end of the crossbeam 41.

[0027] A connecting groove 6 is opened at the end of the horizontal beam 41 or the vertical beam 42. The groove size is adapted to the fixed protrusion 53. The upper and lower surfaces of the inner wall of the connecting groove 6 are symmetrically provided with snap-fit ​​grooves 61 adapted to the wedge-shaped snap-fit ​​block 54. A push block 62 is slidably connected in the snap-fit ​​groove 61. One end of the push block 62 passes through the snap-fit ​​groove 61 and extends to the outside of the connecting groove 6, and a button 63 is fixedly connected to this end. The other end of the push block 62 abuts against the wedge-shaped snap-fit ​​block 54. A return spring is sleeved on the push block 62. The two ends of the return spring are fixedly connected to the button 63 and the outer wall of the connecting groove 6, respectively, to drive the push block 62 to return to its original position. When the button 63 is pressed, the push block 62 can push the wedge-shaped snap-fit ​​block 54 out of the snap-fit ​​groove 61, thereby separating the connecting component 5 from the connecting groove 6.

[0028] like Figure 5 As shown, the quick-release assembly 7 includes a quick-release base 71, a linkage rod 72, a connecting sleeve 73, a fixing rod 74, and a compression spring 75. The quick-release base 71 is made of stainless steel and is welded and fixed to the upper surface of the intersection of the horizontal beam 41 and the vertical beam 42. The upper surface of the quick-release base 71 has a circular opening 711 and a rectangular limiting groove 712. The circular opening 711 is located at the center of the quick-release base 71. The central axis of the rectangular limiting groove 712 coincides with the axis of the circular opening 711, and the opening length of the rectangular limiting groove 712 is equal to the diameter of the circular limiting groove 713 opened inside the quick-release base 71. The circular limiting groove 713 is connected to both the circular opening 711 and the rectangular limiting groove 712, and the diameter of the circular limiting groove 713 is larger than the diameter of the circular opening 711, forming a stepped structure.

[0029] The lower end of the linkage rod 72 is adapted to both the circular opening 711 and the rectangular limiting groove 712. A fixing block 721 is integrally formed symmetrically on the outer surface of the lower end, and the fixing block 721 slides in fit with the rectangular limiting groove 712. The upper end of the linkage rod 72 passes through the inside of the connecting sleeve 73 and slides in fit with the inner wall of the connecting sleeve 73. A wave-shaped groove 731 is formed on the inner wall of the upper end of the connecting sleeve 73. A slider 722 is symmetrically provided on the outer surface of the upper end of the linkage rod 72, and the slider 722 slides in the wave-shaped groove 731. A fixing rod 74 is welded at the center of the upper surface of the connecting sleeve 73, and the end of the fixing rod 74 away from the connecting sleeve 73 penetrates the surface of the curtain wall panel 8. The connecting sleeve 73 has a through hole, and the upper surface of the connecting sleeve 73 is also provided with a compression spring 75. The compression spring 75 covers the outer peripheral surface of the fixing rod 74, and the two ends of the compression spring 75 are welded and fixed to the upper surface of the connecting sleeve 73 and the lower surface of the curtain wall panel 8, respectively. The compression spring 75 is in a pre-compressed state to provide a continuous clamping force. The upper part of the fixing rod 74 is integrally formed with a limiting block 741. The inner wall of the through hole on the surface of the curtain wall panel 8 is provided with a fixing groove 82 extending along the axial direction of the fixing rod 74. The limiting block 741 is slidably disposed in the fixing groove 82 to limit the displacement of the fixing rod 74 in the direction perpendicular to the curtain wall panel 8 and prevent the connecting sleeve 73 from detaching from the curtain wall panel 8.

[0030] like Figure 6 As shown, the curtain wall panel 8 is made of hollow laminated glass or ceramic plate, and a sealing groove 81 is provided on the four edges of the upper surface. The sealing groove 81 has a trapezoidal cross section and is used to make an interference fit with the U-shaped sealing element 9. The interference amount is 1-2mm, so as to achieve waterproof and airtight sealing between adjacent curtain wall panels 8.

[0031] An installation method for a prefabricated curtain wall structure includes the following steps: S1. Base layer pretreatment: Clean the impurities around the connecting anchors on the exterior wall surface, and sand the surface of the connecting anchors to ensure that the connecting anchors are exposed and free of rust; connect the fixing base 1 to the connecting anchors through the connecting nut 2 on the lower surface, tighten it with a torque wrench, and check the levelness of the fixing base 1 with a level to ensure that the error is ≤2mm. If there is a deviation, adjust it by placing a stainless steel shim between the fixing base 1 and the wall.

[0032] S2. Initial installation of curtain wall frame 4: In the order from bottom to top and from left to right, connect the intersection of the horizontal beam 41 and vertical beam 42 of each curtain wall module to the connecting rod 33 of the ball hinge assembly 3 via the telescopic rod 34; rotate the first adjusting nut 35 to adjust the telescopic distance of the telescopic rod 34 so that the curtain wall frame 4 and the fixed base 1 reach the preset distance (set according to the building's thermal insulation and heat dissipation requirements), and lock the first adjusting nut 35; finely adjust the horizontal and verticality of the horizontal beam 41 and vertical beam 42 through the cross-shaped slot 36 of the ball hinge assembly 3, and use a laser rangefinder to check to ensure that the horizontal and verticality error of a single module frame is ≤1.5mm.

[0033] S3. Curtain wall frame 4 splicing: Rotate the second adjusting nut 52 at the end of the horizontal beam 41 to be spliced, so that the connecting screw 51 extends outward by a preset length; align the fixing protrusion 53 of the horizontal beam 41 with the connecting groove 6 of the adjacent horizontal beam 41, insert it along the length direction of the connecting groove 6, and the wedge-shaped locking block 54 slides into the locking groove 61 along the guide slope 55 under the elastic force of the return spring, achieving initial locking; rotate the second adjusting nut 52 in the opposite direction to drive the connecting screw 51 to retract, tighten the adjacent horizontal beam 41 and lock the second adjusting nut 52, use a straightedge to check the flatness of the splicing point, and ensure that the error is ≤1mm; the vertical beam 42 is spliced ​​in the same way as above until the entire curtain wall frame 4 is formed as a whole, and the verticality and horizontality of the frame are checked as a whole.

[0034] S4. Installation of Curtain Wall Panel 8: Install the curtain wall panels 8 in a bottom-to-top and left-to-right order. Align the fixing block 721 at the lower end of the linkage rod 72 with the rectangular limiting groove 712 of the quick-release base 71 and insert it vertically. Press the fixing rod 74 to move the connecting sleeve 73 downward. The wavy groove 731 on the inner wall of the connecting sleeve 73 drives the linkage rod 72 to rotate 90° around its own axis through the slider 722, so that the fixing block 721 is engaged in the circular limiting groove 713. At this time, the compression spring 75 returns to its original position and tightens the connecting sleeve 73, realizing the engagement and fixation of the curtain wall panel 8 with the curtain wall frame 4. Complete the installation of all curtain wall panels 8 in sequence, such as... Figure 7 As shown, a feeler gauge is used to check the gap between adjacent panels to ensure that the gap is uniform. If there is a deviation, the position of the quick-release assembly 7 is adjusted by fine-tuning.

[0035] S5. Sealing treatment: Align the open end of the U-shaped seal 9 with the trapezoidal sealing groove 81 of the adjacent curtain wall panel 8, and insert it at a uniform speed along the length of the sealing groove 81 to ensure that the U-shaped seal 9 and the sealing groove 81 are interference fit and there is no looseness; apply weather-resistant sealant to the joints and ends of the U-shaped seal 9, and use a scraper to smooth and compact it to avoid the formation of air bubbles; after the sealant has cured, conduct a water spray test to check the sealing performance and ensure that there is no leakage.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solutions of the present invention, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A prefabricated curtain wall structure, characterized in that: The system comprises several independent curtain wall modules. Each curtain wall module includes at least two fixed bases symmetrically arranged along its centerline. A plurality of rotatably connected connecting nuts are uniformly embedded on the lower surface of each fixed base, and a ball joint assembly corresponding to the position of the connecting nuts is provided on the upper surface. A curtain wall frame is detachably connected to each fixed base via the ball joint assembly. The curtain wall frame is formed by vertically intersecting horizontal and vertical beams. One end of each horizontal beam has a connecting assembly, and the other end has a connecting groove adapted to the connecting assembly. One end of each vertical beam has the connecting assembly, and the other end has the connecting groove. Adjacent horizontal or vertical beams are fixedly engaged with the connecting groove via the connecting assembly. Quick-release assemblies are fixedly provided on the upper surface of each intersection of the horizontal and vertical beams. The curtain wall panel is detachably connected to the curtain wall frame via the quick-release assemblies. Sealing grooves are provided around the perimeter of the upper surface of the curtain wall panel.

2. The prefabricated curtain wall structure according to claim 1, characterized in that: The connecting nut is used for threaded connection with the pre-installed connecting anchor on the building exterior wall to fix the fixed base to the building exterior wall; the ball joint assembly includes a ball joint fixing seat fixed to the upper surface of the fixed base, the upper end of the ball joint fixing seat has a spherical slot, a spherical protrusion is fitted in the spherical slot with clearance, and a connecting rod is vertically fixed to the upper end of the spherical protrusion; a cross-shaped slot is opened at the upper opening of the ball joint fixing seat, and the connecting rod passes through the cross-shaped slot to realize the micro-adjustment of the connecting rod in the horizontal and vertical directions of ±5°-±15°; the end of the connecting rod away from the spherical protrusion passes through the limiting hole opened on the surface of the telescopic rod, the surface of the connecting rod has external threads, and a first adjusting nut is sleeved at the connection between the telescopic rod and the connecting rod. The first adjusting nut is threaded to the connecting rod to lock the relative position of the telescopic rod and the connecting rod and adjust the telescopic distance between them; The end of the telescopic rod away from the connecting rod is fixed to the lower surface of the intersection of the horizontal beam and the vertical beam.

3. The prefabricated curtain wall structure according to claim 2, characterized in that: The connecting assembly includes a connecting screw, one end of which passes through a connecting hole opened along the length of the crossbeam end. A second adjusting nut is fitted at the connection between the crossbeam and the connecting screw, and the second adjusting nut is threadedly connected to the connecting screw to adjust the extension distance of the connecting screw and lock it in place. A fixing protrusion is integrally formed at the end of the connecting screw away from the crossbeam. The upper and lower surfaces of the fixing protrusion are symmetrically provided with placement grooves. A wedge-shaped locking block is elastically connected to the placement groove through a return spring. The exposed end of the wedge-shaped locking block is provided with a guide slope. The connection structure between the connecting assembly and the end of the vertical beam is the same as the connection structure between the connecting assembly and the end of the crossbeam.

4. A prefabricated curtain wall structure according to claim 3, characterized in that: The inner wall of the connecting groove has symmetrically formed snap-fit ​​grooves on its upper and lower surfaces that are adapted to the wedge-shaped snap-fit ​​block. A push block is slidably connected in the snap-fit ​​groove. One end of the push block passes through the snap-fit ​​groove and extends to the outside of the connecting groove, and is fixedly connected to a button. The other end of the push block abuts against the wedge-shaped snap-fit ​​block. A return spring is sleeved on the push block. The two ends of the return spring are fixedly connected to the button and the outer wall of the connecting groove, respectively, for driving the push block to return to its original position.

5. A prefabricated curtain wall structure according to claim 4, characterized in that: The quick-release assembly includes a quick-release base, which is fixed to the upper surface of the intersection of the horizontal beam and the vertical beam. The upper surface of the quick-release base has a circular opening and a rectangular limiting groove. The circular opening is located at the center of the quick-release base, and the central axis of the rectangular limiting groove coincides with the axis of the circular opening. The opening length of the rectangular limiting groove is equal to the diameter of the circular limiting groove inside the quick-release base. The circular limiting groove is connected to both the circular opening and the rectangular limiting groove, and the diameter of the circular limiting groove is larger than the diameter of the circular opening.

6. A prefabricated curtain wall structure according to claim 5, characterized in that: The quick-release assembly also includes a linkage rod. The lower end of the linkage rod is adapted to both a circular opening and a rectangular limiting groove. A fixing block is integrally formed symmetrically on the outer surface of the lower end of the linkage rod, and the fixing block slides in conjunction with the rectangular limiting groove. The upper end of the linkage rod passes through the inside of the connecting sleeve and slides in conjunction with the inner wall of the connecting sleeve. A wavy groove is formed on the inner wall of the upper end of the connecting sleeve. A slider is symmetrically provided on the outer surface of the upper end of the linkage rod, and the slider slides within the wavy groove. A fixing rod is fixedly provided at the center of the upper surface of the connecting sleeve. The end of the fixing rod away from the connecting sleeve passes through a through hole on the surface of the curtain wall panel. A compression spring is also provided on the upper surface of the connecting sleeve. The compression spring covers the outer circumference of the fixing rod, and both ends of the compression spring are fixed to the upper surface of the connecting sleeve and the lower surface of the curtain wall panel, respectively.

7. A prefabricated curtain wall structure according to claim 6, characterized in that: The upper part of the fixing rod is integrally formed with a limiting block, and the inner wall of the through hole on the surface of the curtain wall panel is provided with a fixing groove extending along the axis of the fixing rod. The limiting block is slidably disposed in the fixing groove to limit the displacement of the fixing rod in the direction perpendicular to the curtain wall panel.

8. A prefabricated curtain wall structure according to claim 7, characterized in that: The sealing groove has a trapezoidal cross-section and is used for interference fit with the U-shaped seal.

9. An installation method for a prefabricated curtain wall structure, based on the curtain wall structure described in claim 8, characterized in that, Includes the following steps: S1. Clean the debris around the connecting anchors on the exterior wall surface of the building, ensuring that the connecting anchors are exposed and free of rust; connect the fixing base to the connecting anchors through the connecting nut on the lower surface, tighten the fixing base, and ensure that the horizontal error of the fixing base is ≤2mm. S2. Connect the intersections of the horizontal and vertical beams of each curtain wall module to the connecting rods of the ball joint assembly via telescopic rods, following the order from bottom to top and from left to right; rotate the first adjusting nut to adjust the telescopic distance of the telescopic rods so that the curtain wall frame and the fixed base reach the preset distance, and then lock the first adjusting nut; finely adjust the horizontal and verticality of the horizontal and vertical beams through the cross-shaped slot of the ball joint assembly to ensure that the error of a single module frame is ≤1.5mm; S3. Rotate the second adjusting nut at the end of the beam to be spliced ​​to extend the connecting screw outwards. Insert the fixing protrusion of the beam into the connecting groove of the adjacent beam. The wedge-shaped locking block slides into the locking groove along the guide slope under the action of the return spring, achieving initial locking. Rotate the second adjusting nut in the opposite direction to drive the connecting screw to retract, tighten the adjacent beam and lock it, ensuring that the flatness error at the splice is ≤1mm. The vertical beams are spliced ​​in the same way until the entire curtain wall frame is formed as a whole. S4. Install the curtain wall panels in the order from bottom to top and from left to right. Align the fixing block at the lower end of the linkage rod with the rectangular limiting groove of the quick-release base and insert it. Press the fixing rod to drive the connecting sleeve to move down. The wave-shaped slide groove drives the linkage rod to rotate 90° around its own axis through the slider, so that the fixing block is locked into the circular limiting groove. The compression spring returns to its original position and tightens the connecting sleeve, realizing the locking and fixing of the curtain wall panel and the curtain wall frame. Complete the installation of all curtain wall panels in sequence to ensure that the gap between adjacent panels is uniform. S5. Align the open end of the U-shaped seal with the trapezoidal sealing groove of the adjacent curtain wall panel, and insert the U-shaped seal at a uniform speed along the length of the sealing groove to ensure that the U-shaped seal and the sealing groove are interference fit and there is no looseness.

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