A roof grating node assembly structure

Abstract

The application discloses a roof grid node assembly structure, which comprises at least two keels, a plurality of first adapters, a plurality of first fasteners, a plurality of grids and a plurality of second adapters, each of the keels corresponds to each of the main bodies one by one and extends along the Y direction, each of the first adapters is respectively connected with each of the keels and is used for abutting against one side of the corresponding main body, each of the first fasteners is used for detachably connecting each of the first adapters with the corresponding keel and is used for abutting against or separating from the other side of the corresponding main body so as to clamp or loosen the main body together with the first adapter, and each of the grids is arranged at intervals along the Y direction. The roof grid node assembly structure can realize the welding-free assembly connection of the roof grid and the main body node, improves the construction efficiency, guarantees the structural safety and reduces the whole life cycle cost.

Description

Technical Field

[0001] This invention relates to the field of roof decoration engineering technology, and in particular to a prefabricated structure for roof grid nodes. Background Technology

[0002] Currently, roof decorative grilles, with their multiple advantages such as sun shading control, optimized lighting, enhanced ventilation, reduced roof load, and lower maintenance difficulty, have been widely used in the roof decoration systems of large-space public buildings. Meanwhile, as the construction industry transforms towards industrialization, prefabricated buildings, due to their high construction efficiency, minimal on-site wet work, environmental friendliness, controllable quality, and predictable construction period, have become a key direction for the country to promote the upgrading of the construction industry.

[0003] However, existing roof grid installation technology still relies primarily on traditional construction methods, which are insufficient to meet the demands of prefabricated and efficient construction. Firstly, traditional processes often employ on-site assembly, requiring each grid to be individually positioned, aligned, and fixed. This process is complex, time-consuming, and significantly increases the time spent working at heights, raising safety risks and failing to meet the requirements of rapid construction. Secondly, traditional processes depend on welding steel components for fixation. The high temperatures of welding can easily damage the main steel structure and its original anti-corrosion coating, weakening the structural integrity. Post-weld rust removal and anti-corrosion repairs are necessary, resulting in overlapping processes and difficulty in consistently controlling quality.

[0004] Therefore, there is an urgent need to design a prefabricated structure for roof grid nodes to achieve weld-free prefabricated connection of roof grid nodes, improve construction efficiency, ensure structural safety, reduce the total life cycle cost, and promote the upgrading of roof grid construction technology. Summary of the Invention

[0005] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose a prefabricated structure for roof grid nodes, which solves the technical problems of low installation efficiency, prominent safety hazards of high-altitude operations, damage to the main structure by welding operations, and high cost of anti-corrosion treatment in the existing technology of roof grid installation using traditional construction methods.

[0006] To achieve the above-mentioned technical objectives, the present invention provides a roof grid node assembly structure, wherein at least two main bodies are fixedly installed on the roof, each of the main bodies being spaced apart along the X-direction and extending along the Y-direction, the X-direction and the Y-direction being perpendicular to each other, comprising: At least two keels, each corresponding to one of the main bodies, and both extending along the Y direction; Multiple first adapters are respectively snapped into each of the keels and used to abut against one side of the corresponding main body; Multiple first fasteners are used to detachably and fix each first adapter to the corresponding keel, and to abut or separate from the other side of the corresponding body, so as to clamp or loosen the body together with the first adapter; Multiple grilles, spaced apart along the Y-axis, and all extending along the X-axis; and Multiple second adapters are respectively disposed at the junction of each of the grilles and each of the keels, and can be detachably and fixedly connected to the grilles and the keels.

[0007] Furthermore, the main body is an H-beam, the first adapter is used to abut against the inner side of the wing plate of the main body, and the first fastener is used to abut against or separate from the outer side of the wing plate of the main body.

[0008] Furthermore, the keel has a first snap-fit ​​groove extending along its length direction. The first adapter includes a snap-fit ​​plate, an abutment plate, and a connecting plate. The snap-fit ​​plate snaps into the first snap-fit ​​groove and can move along the length direction of the first snap-fit ​​groove. The connecting plate is disposed between the snap-fit ​​plate and the abutment plate and is fixedly connected to the snap-fit ​​plate and the abutment plate. The abutment plate is used to abut against the inner side of the wing plate of the main body.

[0009] Furthermore, the connecting plate is perpendicular to the snap-fit ​​plate and the abutment plate, and is used to abut against the outer edge of the wing plate of the main body.

[0010] Furthermore, the keel has a second snap-fit ​​groove extending along its length direction, and the keel also has a plurality of first through holes spaced apart along its length direction. The axial direction of each first through hole extends along the Z direction and connects the first snap-fit ​​groove and the second snap-fit ​​groove. The Z direction is perpendicular to the X and Y directions. The snap-fit ​​plate has a second through hole, the axial direction of which extends along the Z direction. The first fastener includes a first screw and two first nuts. The first screw passes through the corresponding first through hole and second through hole. One end of the first screw is used to abut or separate from the outer side of the wing plate of the main body. Both first nuts are sleeved on the first screw and screwed to the first screw. One of the first nuts is snapped into the second snap-fit ​​groove and can move along the length direction of the second snap-fit ​​groove. The other first nut is used to abut or separate from the keel.

[0011] Furthermore, the second adapter has positioning grooves extending along the X direction and open at both ends. The positioning grooves spaced apart along the X direction form positioning channels extending along the X direction, and each positioning channel is used for corresponding placement of each grille.

[0012] Furthermore, the roof grid node assembly structure also includes a plurality of second fasteners, which are used to detachably and fix each of the second adapters to the corresponding keel.

[0013] Furthermore, the keel has at least two third snap-fit ​​grooves extending along its length direction, and the second adapter has at least two third through holes. The axial direction of each of the third through holes extends along the Z direction and corresponds one-to-one with each of the third snap-fit ​​grooves. The second fastener includes a first bolt and a second nut. The nut of the first bolt engages with the third snap-fit ​​groove and can move along the length direction of the third snap-fit ​​groove. The shank of the first bolt passes through the corresponding third through hole. The second nut is sleeved on the first bolt and screwed to the first bolt. The second nut is used to abut or separate from the second adapter.

[0014] Furthermore, the roof grid node assembly structure also includes multiple third fasteners, which are used to detachably and fix each of the second adapters to the corresponding grid.

[0015] Furthermore, the grille has at least two first oblong holes, each extending along the Z-direction in length and along the Y-direction in axial direction. The second adapter has a second oblong hole, extending along the X-direction in length and along the Y-direction in axial direction, penetrating the positioning groove. Both side walls of the second adapter have first teeth, each tooth of which is arranged along the Z-direction. The third fastener includes a positioning shaft, two positioning plates, and two second bolts. The positioning shaft passes through the corresponding first and second oblong holes. Both ends of the positioning shaft have screw holes. The two positioning plates are slidably sleeved on the positioning shaft and respectively located on both sides of the second adapter. One side wall of each of the two positioning plates has a second tooth, each tooth of which is arranged along the Z-direction. The two second teeth are used to engage with the corresponding first teeth. The two second bolts are screwed into the two screw holes one-to-one and are used to abut or separate from the outer side of the corresponding positioning plate.

[0016] Compared with the prior art, the beneficial effects of the present invention include: In use, a roof grid of appropriate size is first prefabricated according to the size of the roof, and then the prefabricated roof grid is hoisted to the roof so that each keel corresponds to each main body and extends along the Y direction, that is, along the length direction of the main body. Then, each first adapter abuts against one side of the corresponding main body, and then each first fastener is operated in sequence so that each first fastener abuts against or separates from the other side of the corresponding main body. Thus, each first fastener and the corresponding first adapter clamp the main body together, thereby achieving fixation with the main body. The prefabricated structure of the roof grid node can realize the prefabricated connection of the roof grid and the main body node without welding, improve construction efficiency, ensure structural safety, reduce the whole life cycle cost, and promote the upgrading of roof grid construction technology. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of a roof grid node assembly structure provided by the present invention; Figure 2 This is a left view of a roof grid node assembly structure provided by the present invention; Figure 3 This is an enlarged view of point A provided by the present invention; Figure 4 This is an enlarged view of point B provided by the present invention; In the diagram: 1 - Main body, 11 - Wing plate, 100 - Keel, 110 - First snap-fit ​​groove, 120 - Second snap-fit ​​groove, 130 - First through hole, 140 - Receiving groove, 150 - Third snap-fit ​​groove, 200 - First adapter, 210 - Snap-fit ​​plate, 211 - Second through hole, 220 - Abutment plate, 230 - Connecting plate, 300 - First fastener, 310 - First screw, 320 - First nut, 400 - Grid Grid, 410 - First oblong hole, 500 - Second adapter, 510 - Positioning groove, 520 - Third through hole, 530 - Second oblong hole, 540 - First tooth, 600 - Second fastener, 610 - First bolt, 620 - Second nut, 700 - Third fastener, 710 - Positioning shaft, 711 - Screw hole, 720 - Positioning plate, 721 - Second tooth, 730 - Second bolt, 800 - Protective pad. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0019] This invention provides a roof grid node assembly structure, in which at least two main bodies 1 are fixedly installed on the roof. Each main body 1 is spaced apart along the X direction and extends along the Y direction, with the X and Y directions perpendicular to each other. Its structure is as follows: Figure 1 - Figure 2 As shown, the device includes at least two keels 100, multiple first adapters 200, multiple first fasteners 300, multiple grilles 400, and multiple second adapters 500. Each keel 100 corresponds one-to-one with each main body 1 and extends along the Y direction. Each first adapter 200 is snapped into each keel 100 and abuts against one side of the corresponding main body 1. Each first fastener 300 is used to detachably and fix each first adapter 200 to the corresponding keel 100 and to abut or separate from the other side of the corresponding main body 1, so as to clamp or loosen the main body 1 together with the first adapter 200. Each grille 400 is spaced apart along the Y direction and extends along the X direction. Each second adapter 500 is disposed at the junction of each grille 400 and each keel 100 and detachably and fixably connects the grille 400 and the keel 100.

[0020] In use, a roof grid of appropriate size is first prefabricated according to the roof size. Then, the prefabricated roof grid is hoisted onto the roof, so that each keel 100 corresponds to each main body 1 and extends along the Y direction, that is, along the length direction of the main body 1. Then, each first adapter 200 abuts against one side of the corresponding main body 1. Then, each first fastener 300 is operated in sequence, so that each first fastener 300 abuts against or separates from the other side of the corresponding main body 1. Thus, each first fastener 300 and the corresponding first adapter 200 can clamp the main body 1 together, thereby achieving fixation with the main body 1. This roof grid node prefabricated structure can realize a weld-free prefabricated connection between the roof grid and the main body 1 at the node, improve construction efficiency, ensure structural safety, reduce the whole life cycle cost, and promote the upgrading of roof grid construction technology.

[0021] As a preferred embodiment, please refer to Figure 1 The main body 1 is an H-beam. The first adapter 200 is used to abut against the inner side of the wing plate 11 of the main body 1. The first fastener 300 is used to abut against or separate from the outer side of the wing plate 11 of the main body 1. The main body 1 is a grid roof structure support system that bears all the loads of the grid 400.

[0022] In another embodiment, the main body 1 is an I-shaped steel.

[0023] As a preferred embodiment, high-strength aluminum alloy grille 400 and keel 100 are used, which are lightweight and have high rigidity, reducing the load on the main structure. The hollow design of aluminum alloy grille 400 reduces wind load, thereby improving the overall structural safety and stability of the roof from the source.

[0024] As a preferred embodiment, please refer to Figure 1 and Figure 3 The keel 100 has a first snap-fit ​​groove 110 extending along its length. The first adapter 200 includes a snap-fit ​​plate 210, an abutment plate 220, and a connecting plate 230. The snap-fit ​​plate 210 snaps into the first snap-fit ​​groove 110 and can move along the length of the first snap-fit ​​groove 110. The connecting plate 230 is disposed between the snap-fit ​​plate 210 and the abutment plate 220 and is fixedly connected to the snap-fit ​​plate 210 and the abutment plate 220. The abutment plate 220 is used to engage with the wing plate 11 of the main body 1. The inner side abuts against the first snap-fit ​​groove 110 via the snap-fit ​​plate 210, thereby achieving the snap-fit ​​between the first adapter 200 and the keel 100. The snap-fit ​​plate 210 can move along the length direction of the first snap-fit ​​groove 110, thereby allowing the position of the first adapter 200 along the length direction of the main body 1 to be adjusted, improving the convenience of construction. The abutting plate 220 abuts against the inner side of the wing plate 11 of the main body 1, thereby achieving the abutment between the first adapter 200 and the corresponding side of the main body 1.

[0025] As a preferred embodiment, please refer to Figure 1 and Figure 3 The first snap-fit ​​groove 110 has a T-shaped cross-section and is adapted to the snap-fit ​​plate 210, thereby limiting the snap-fit ​​plate 210 so that the snap-fit ​​plate 210 can only move along the length direction of the first snap-fit ​​groove 110 and cannot move laterally relative to the first snap-fit ​​groove 110.

[0026] As a preferred embodiment, please refer to Figure 1 and Figure 3 Both ends of the first snap-fit ​​groove 110 are open in the length direction, which makes it easy to insert the snap-fit ​​plate 210 into the first snap-fit ​​groove 110 through the opening at the end of the first snap-fit ​​groove 110, so as to realize the quick assembly of the snap-fit ​​plate 210 and the first snap-fit ​​groove 110.

[0027] As a preferred embodiment, please refer to Figure 1 and Figure 3 The connecting plate 230 is perpendicular to the snap-fit ​​plate 210 and the abutment plate 220, and is used to abut against the outer edge of the wing plate 11 of the main body 1, thereby improving the connection strength.

[0028] In the first embodiment, please refer to Figure 1 and Figure 3The keel 100 has a second snap-fit ​​groove 120 extending along its length. The keel 100 also has multiple first through holes 130 spaced apart along its length. The axial direction of each first through hole 130 extends along the Z-direction and connects the first snap-fit ​​groove 110 and the second snap-fit ​​groove 120. The Z-direction is perpendicular to both the X-direction and the Y-direction. The snap-fit ​​plate 210 has a second through hole 211 extending axially along the Z-direction. The first fastener 300 includes a first screw 310 and two first nuts 320. The first screw 310 passes through the corresponding first through hole 130 and second through hole 211. One end of the first screw 310 is used to abut or separate from the outer surface of the wing plate 11 of the main body 1. Both first nuts 320 are sleeved on the first screw 310 and screwed to it. One of the first nuts 320 is connected to the second snap-fit ​​groove. The first adapter 200 is engaged with the corresponding side of the main body 1, and can move along the length of the second engagement groove 120. Another first nut 320 is used to abut or separate from the keel 100. After each first adapter 200 abuts with one side of the corresponding main body 1, the first screw 310 is operated so that one end of the first screw 310 abuts with the outer side of the wing plate 11 of the main body 1. Then, the other first nut 320 is rotated so that the other first nut 320 abuts or separates from the keel 100. At this time, the first screw 310 can be locked and fixed by the two first nuts 320. Since the abutment plate 220 abuts with the inner side of the wing plate 11 of the main body 1 and one end of the first screw 310 abuts with the outer side of the wing plate 11 of the main body 1, the keel 100 and the main body 1 can be fixed. By adjusting the first screw 310, the main body 1 with different flange thicknesses can be adapted.

[0029] In a preferred embodiment, a washer and a gasket are provided between the first nut 320 and the keel 100.

[0030] As a preferred embodiment, please refer to Figure 1 and Figure 3 The cross-section of the second locking groove 120 is a T-shaped structure and is adapted to one of the first nuts 320, thereby limiting the first nut 320 so that the first nut 320 can only move along the length direction of the second locking groove 120 and cannot move laterally relative to the second locking groove 120.

[0031] As a preferred embodiment, please refer to Figure 1 and Figure 3 Both ends of the second locking groove 120 are open in the length direction, which facilitates the insertion of the first nut 320 into the second locking groove 120 through the opening at the end of the second locking groove 120, thereby realizing the quick assembly of the first nut 320 and the second locking groove 120.

[0032] As a preferred embodiment, please refer to Figure 1 and Figure 3 The keel 100 has a receiving groove 140 extending along its length. A first snap-fit ​​groove 110 is located on the outside of the bottom of the receiving groove 140, and a second snap-fit ​​groove 120 is located on the inside of the bottom of the receiving groove 140. Another first nut 320 is located inside the receiving groove 140 and is used to abut or separate from the bottom of the receiving groove 140. The receiving groove 140 can accommodate the first screw 310 and the other first nut 320, improving the overall aesthetics and preventing interference between the first screw and the other first nut 320 and the second adapter 500.

[0033] In the second embodiment, the first fastener 300 includes a first screw 310 and two first nuts 320. The first screw 310 passes through the corresponding first through hole 130 and second through hole 211. One end of the first screw 310 is used to abut or separate from the outer side of the wing plate 11 of the main body 1. The two first nuts 320 are both sleeved on the first screw 310 and screwed to the first screw 310. One of the first nuts 320 abuts or separates from the snap-fit ​​plate 210, and the other first nut 320 is located in the receiving groove 140 and is used to abut or separate from the bottom of the receiving groove 140, thereby limiting the first screw 310 along its own axial direction.

[0034] In the third embodiment, the first fastener 300 includes a first screw 310, the wall of the first through hole 130 is provided with a first internal thread, the wall of the second through hole 211 is provided with a second internal thread, the first screw 310 passes through the corresponding first through hole 130 and second through hole 211, and is screwed to the first internal thread and the second internal thread, and one end of the first screw 310 is used to abut or separate from the outer side of the wing plate 11 of the main body 1.

[0035] As a preferred embodiment, please refer to Figure 2 and Figure 4 The second adapter 500 has a positioning groove 510 extending along the X direction and open at both ends. The positioning grooves 510 spaced apart along the X direction form a positioning channel extending along the X direction. Each positioning channel is used for each grille 400 to be placed in a corresponding manner, so that the grille 400 can be initially positioned so that the grille 400 can only move along the X and Z directions, but cannot move along the Y direction.

[0036] As a preferred embodiment, please refer to Figure 1 and Figure 2 The roof grid node assembly structure further includes multiple second fasteners 600, which are used to detachably and fix each second adapter 500 to the corresponding keel 100, thereby enabling the second adapter 500 to be detachably and fixedly connected to the corresponding keel 100 via the second fasteners 600.

[0037] As a preferred embodiment, please refer to Figure 1 and Figure 3 The keel 100 has at least two third snap-fit ​​grooves 150 extending along its length. The second adapter 500 has at least two third through holes 520, each of which extends axially along the Z-direction and corresponds one-to-one with a third snap-fit ​​groove 150. The second fastener 600 includes a first bolt 610 and a second nut 620. The nut of the first bolt 610 engages with the third snap-fit ​​groove 150 and can move along the length of the third snap-fit ​​groove 150. The shank of the first bolt 610 passes through the corresponding third snap-fit ​​groove 150. The tee hole 520 and the second nut 620 are fitted onto and screwed onto the first bolt 610. The second nut 620 is used to tighten or loosen with the second adapter 500. The nut of the first bolt 610 can move along the length of the third locking groove 150, thereby adjusting the position of the second adapter 500 along the length of the keel 100, and thus adjusting the distance between two adjacent grids 400 to adapt to different roof assembly requirements. When the second adapter 500 reaches the preset position, the second nut 620 is rotated. 0. This allows the second nut 620 to abut against the second adapter 500, thereby locking the position of the second adapter 500 and fixing it to the keel 100. Traditional methods require drilling holes in the steel structure nodes of the main body 1 to install connectors, which not only reduces the effective cross-section of the structure and affects its load-bearing capacity, but also places stringent requirements on the positioning accuracy of the supports, making on-site deviation adjustment difficult, resulting in high construction difficulty and low adjustability. This roof grid node prefabricated structure uses the second fastener 600 to secure the second adapter. The detachable fixed connection between the second adapter 500 and the corresponding keel 100 only requires slotting on the keel 100 and drilling on the second adapter 500, without drilling on the main body 1, which can ensure the load-bearing performance of the main body 1 structure. In addition, the nut of the first bolt 610 of the second fastener 600 can move along the length direction of the third snap-fit ​​groove 150, thereby adjusting the position of the second adapter 500 in the length direction of the keel 100, and thus adjusting the distance between two adjacent grids 400 to adapt to different roof assembly requirements, with high adjustability.

[0038] In a preferred embodiment, a washer and a gasket are provided between the second nut 620 and the second adapter 500.

[0039] As a preferred embodiment, please refer to Figure 1 and Figure 3 Each of the third card slots 150 is located on the two slot walls of the receiving slot 140, so that the second adapter 500 can be placed on the keel 100.

[0040] As a preferred embodiment, please refer to Figure 1 and Figure 3The cross-section of the third locking groove 150 is a T-shaped structure and is adapted to the nut of the first bolt 610, thereby limiting the nut of the first bolt 610 so that the nut of the first bolt 610 can only move along the length direction of the third locking groove 150 and cannot move laterally relative to the third locking groove 150.

[0041] As a preferred embodiment, please refer to Figure 1 and Figure 3 Both ends of the third locking groove 150 are open in the length direction, which makes it easy to put the nut of the first bolt 610 into the third locking groove 150 through the opening at the end of the third locking groove 150, so as to realize the quick assembly of the nut of the first bolt 610 and the third locking groove 150.

[0042] As a preferred embodiment, please refer to Figure 1 and Figure 2 The roof grid node assembly structure further includes multiple third fasteners 700, which are used to detachably and fix each second adapter 500 to the corresponding grid 400, thereby enabling the second adapter 500 to be detachably and fixedly connected to the corresponding grid 400 via the third fasteners 700.

[0043] As a preferred embodiment, please refer to Figure 3 and Figure 4The grille 400 has at least two first oblong holes 410, each extending longitudinally along the Z-direction and axially along the Y-direction. The second adapter 500 has a second oblong hole 530, extending longitudinally along the X-direction and axially along the Y-direction, penetrating the positioning groove 510. Both side walls of the second adapter 500 have first teeth 540, with each tooth of the first teeth 540 arranged along the Z-direction. The third fastener 700 includes a positioning shaft 710, two positioning plates 720, and two second bolts 730. The positioning shaft 710 passes through the corresponding first oblong hole 410 and second oblong hole 530. Both ends of the positioning shaft 710 have screw holes 711. Two positioning plates 720 are slidably sleeved on the positioning shaft 710 and respectively located on both sides of the second adapter 500. One side wall of each positioning plate 720 has a second tooth 721, with each tooth of the second tooth 721 arranged along the Z-direction. The two second teeth 721 are respectively used to mesh with the corresponding first teeth 540. Two second bolts 730 are screwed one-to-one into the two screw holes 711 and are used to abut or separate from the outer side of the corresponding positioning plate 720, thus aligning the various... Each grille 400 is placed one-to-one with the corresponding positioning channel, allowing for initial positioning of the grille 400. This ensures that the grille 400 can only move along the X and Z directions, but not along the Y direction. Then, each positioning shaft 710 is passed through the corresponding first oblong hole 410 and second oblong hole 530, and the grille 400 is slightly moved along the Y and Z directions to fine-tune its position until it reaches the desired position. Finally, the second tooth 721 of the positioning plate 720 engages with the corresponding first tooth 540, thereby locking the Z-direction position of the grille 400. Next, the second bolt 730 is operated. The second bolt 730 abuts against the outer side of the corresponding positioning plate 720, thereby pressing the positioning plate 720. The position of the grille 400 in the X direction is locked by the friction between the positioning plate 720 and the side wall of the second adapter 500. Since the traditional welding and hole-making processes are irreversible connection methods, the original nodes need to be destroyed when the grille 400 is inspected or replaced in the future. This not only significantly increases the maintenance cost, but also easily causes secondary damage to the roof structure. The roof grille node is a prefabricated structure with detachable connection. The grille 400 can be inspected or replaced in the future without destroying the structure, resulting in low maintenance cost and convenient operation.

[0044] As a preferred embodiment, please refer to Figure 1 and Figure 4In each of the second adapters 500 spaced apart along the X direction, the second waist-shaped hole 530 of one of the second adapters 500 can be replaced with a round hole to perform the function of initial positioning along the X direction. Then, the first waist-shaped hole 410, the first tooth 540 and the second tooth 721 of the grille 400 are used to limit and adjust the position of the grille 400 in the Z direction.

[0045] In the second embodiment, the third fastener 700 includes a second screw (not shown in the figure) and two third nuts (not shown in the figure). The second screw passes through the corresponding first oblong hole 410 and second oblong hole 530. The two third nuts are both sleeved on the second screw and screwed to the second screw. The two third nuts are respectively disposed on both sides of the second adapter 500 and are used to abut or separate from the second adapter 500.

[0046] As a preferred embodiment, please refer to Figure 1 and Figure 3 The roof grid node assembly structure also includes a protective pad 800, which is disposed between the abutment plate 220 and the wing plate 11 of the main body and between the connecting plate 230 and the wing plate 11 of the main body to prevent electrochemical corrosion.

[0047] In a preferred embodiment, the protective pad 800 is made of rubber.

[0048] To better understand this invention, the following is combined with... Figure 1 - Figure 4 The working principle of the technical solution of the present invention will be described in detail below: In use, a roof grid of appropriate size is prefabricated according to the roof size. When assembling the roof grid, the first adapter 200 is first assembled with the keel 100. The snap-fit ​​plate 210 of the first adapter 200 is inserted into the first snap-fit ​​groove 110 of the keel 100 through the opening at the end of the first snap-fit ​​groove 110, realizing the quick assembly of the snap-fit ​​plate 210 and the first snap-fit ​​groove 110. One of the first nuts 320 of the first fastener 300 is inserted into the second snap-fit ​​groove 120 through the opening at the end of the second snap-fit ​​groove 120 of the keel 100, realizing the quick assembly of the first nut 320 and the second snap-fit ​​groove 120. At the same time, the first nut 320 and the snap-fit ​​plate 210 are moved so that the first nut 320 and the first snap-fit ​​plate 210 of the keel 100 are aligned. The first through hole 130 and the second through hole 211 of the snap-fit ​​plate 210 are connected. Then, the first screw 310 of the first fastener 300 passes through the first nut 320, the first through hole 130 of the keel 100 and the second through hole 211 of the snap-fit ​​plate 210, and is screwed to the first nut 320. Then, another first nut 320 is fitted onto the first screw 310 and screwed to the first screw 310. Then, the second adapter 500 is assembled with the keel 100. First, the first bolt 610 of the second fastener 600 is passed through the third through hole 520 of the second adapter 500. Then, the second nut 620 is fitted onto the first bolt 610 and screwed to the first bolt 610. The connection is made from the end of the third snap-fit ​​groove 150 of the keel 100. The opening allows the nut of the first bolt 610 to be housed within the third retaining groove 150, enabling quick assembly of the nut of the first bolt 610 with the third retaining groove 150. The nut of the first bolt 610 moves along the length of the third retaining groove 150, thereby adjusting the position of the second adapter 500 along the length of the keel 100. This allows adjustment of the distance between adjacent grids 400 to accommodate different roof assembly requirements. When the second adapter 500 reaches the preset position, the second nut 620 is rotated to tighten against the second adapter 500, locking the position of the second adapter 500 and fixing it to the keel 100. Then, each grid 400 is placed one by one. The grid 400 is initially positioned by placing it in each positioning channel, allowing it to move only along the X and Z directions but not along the Y direction. Then, each positioning shaft 710 is passed through the corresponding first oblong hole 410 and second oblong hole 530, and the grid 400 is slightly moved along the Y and Z directions to fine-tune its position until it reaches the appropriate position. Next, the second tooth 721 of the positioning plate 720 engages with the corresponding first tooth 540 to lock the Z-direction position of the grid 400. Finally, the second bolt 730 is operated, pressing against the outer side of the corresponding positioning plate 720 to tighten it.The position of the grille 400 in the X direction is locked by the friction between the positioning plate 720 and the side wall of the second adapter 500, thus fixing the second adapter 500 and the grille 400 and forming a pre-set roof grille. The pre-made roof grille is then hoisted onto the roof, so that each keel 100 corresponds one-to-one with each main body 1 and extends along the Y direction, that is, along the length direction of the main body 1. Then, the flange surface of the main body 1 is cleaned, and a protective pad 800 is laid. The abutment plates 220 of each first adapter 200 are abutted against the inner side of the corresponding wing plate 11 of the main body 1. After each first adapter 200 is abutted against one side of the corresponding main body 1, the first screw 310 is operated so that one end of the first screw 310 abuts against the outer side of the wing plate 11 of the main body 1. Tighten, then rotate the other first nut 320, which can make the other first nut 320 abut against or separate from the keel 100. At this time, the first screw 310 can be locked and fixed by the two first nuts 320. Since the abutment plate 220 abuts against the inner side of the wing plate 11 of the main body 1, and one end of the first screw 310 abuts against the outer side of the wing plate 11 of the main body 1, the keel 100 and the main body 1 can be fixed. By adjusting the first screw 310, it can be adapted to the main body 1 with different flange thicknesses. The prefabricated structure of the roof grid node can realize the prefabricated connection of the roof grid and the main body 1 node without welding, improve construction efficiency, ensure structural safety, reduce the whole life cycle cost, and promote the upgrading of roof grid construction technology.

[0049] The prefabricated roof grid node structure provided by this invention has the following beneficial effects: (1) The prefabricated structure of the roof grid node can achieve the detachable fixed connection between the second adapter 500 and the corresponding keel 100 through the second fastener 600. Only the keel 100 needs to be slotted and the second adapter 500 needs to be holed. There is no need to make holes in the main body 1, which can ensure the load-bearing performance of the main body 1 structure. (2) The roof grid nodes are prefabricated structures with detachable connections. The grid 400 can be inspected and replaced without damaging the structure, resulting in low maintenance costs and convenient operation. (3) In this roof grid node assembly structure, the nut of the first bolt 610 of the second fastener 600 can move along the length direction of the third snap groove 150, thereby adjusting the position of the second adapter 500 in the length direction of the keel 100, and thus adjusting the distance between two adjacent grids 400 to adapt to different roof assembly requirements. The positioning shaft 710 is respectively inserted into the corresponding first waist-shaped hole 410 and second waist-shaped hole 530, and can slightly move the grid 400 along the Y and Z directions to fine-tune the position of the grid 400 until the grid 400 reaches the appropriate position, with high adjustability. (4) The prefabricated structure of the roof grid node can realize the prefabricated connection between the roof grid and the main body node 1 without welding, which improves construction efficiency, ensures structural safety, reduces the cost of the whole life cycle, and promotes the upgrading of roof grid construction technology.

[0050] The specific embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. Any other corresponding changes and modifications made in accordance with the technical concept of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A roof grid node assembly structure, wherein at least two main bodies are fixedly installed on the roof, each of the main bodies being spaced apart along the X-direction and extending along the Y-direction, the X-direction and the Y-direction being perpendicular to each other, characterized in that, include: At least two keels, each corresponding to one of the main bodies, and both extending along the Y direction; Multiple first adapters are respectively snapped into each of the keels and used to abut against one side of the corresponding main body; Multiple first fasteners are used to detachably and fix each first adapter to the corresponding keel, and to abut or separate from the other side of the corresponding body, so as to clamp or loosen the body together with the first adapter; Multiple grilles are spaced apart along the Y direction and all extend along the X direction; and Multiple second adapters are respectively disposed at the junction of each of the grilles and each of the keels, and can be detachably and fixedly connected to the grilles and the keels.

2. The roof grid node prefabricated structure according to claim 1, characterized in that, The main body is an H-beam, the first adapter is used to abut against the inner side of the wing plate of the main body, and the first fastener is used to abut against or separate from the outer side of the wing plate of the main body.

3. The roof grid node prefabricated structure according to claim 2, characterized in that, The keel has a first snap-fit ​​groove extending along its length direction. The first adapter includes a snap-fit ​​plate, an abutment plate, and a connecting plate. The snap-fit ​​plate snaps into the first snap-fit ​​groove and can move along the length direction of the first snap-fit ​​groove. The connecting plate is disposed between the snap-fit ​​plate and the abutment plate and is fixedly connected to the snap-fit ​​plate and the abutment plate. The abutment plate is used to abut against the inner side of the wing plate of the main body.

4. The roof grid node prefabricated structure according to claim 3, characterized in that, The connecting plate is perpendicular to the snap-fit ​​plate and the abutment plate, and is used to abut against the outer edge of the wing plate of the main body.

5. The roof grid node prefabricated structure according to claim 3, characterized in that, The keel has a second snap-fit ​​groove extending along its length. The keel also has a plurality of first through holes spaced apart along its length. The axial direction of each first through hole extends along the Z direction and connects the first snap-fit ​​groove and the second snap-fit ​​groove. The Z direction is perpendicular to the X and Y directions. The snap-fit ​​plate has a second through hole extending along the Z direction. The first fastener includes a first screw and two first nuts. The first screw passes through the corresponding first through hole and second through hole. One end of the first screw is used to abut or separate from the outer side of the wing plate of the main body. The two first nuts are both sleeved on the first screw and screwed to the first screw. One of the first nuts is snapped into the second snap-fit ​​groove and can move along the length direction of the second snap-fit ​​groove. The other first nut is used to abut or separate from the keel.

6. The roof grid node prefabricated structure according to claim 1, characterized in that, The second adapter has a positioning groove extending along the X direction and open at both ends. The positioning grooves, which are spaced apart along the X direction, form a positioning channel extending along the X direction. Each positioning channel is used for placing each grille in a corresponding manner.

7. The roof grid node prefabricated structure according to claim 1, characterized in that, It also includes a plurality of second fasteners, each used to detachably and securely connect each of the second adapters to the corresponding keel.

8. The roof grid node prefabricated structure according to claim 7, characterized in that, The keel has at least two third snap-fit ​​grooves extending along its length. The second adapter has at least two third through holes, each of which extends axially along the Z direction and corresponds one-to-one with each of the third snap-fit ​​grooves. The second fastener includes a first bolt and a second nut. The nut of the first bolt engages with the third snap-fit ​​groove and can move along the length of the third snap-fit ​​groove. The shank of the first bolt passes through the corresponding third through hole. The second nut is sleeved on the first bolt and screwed to it. The second nut is used to abut or separate from the second adapter.

9. The roof grid node prefabricated structure according to claim 6, characterized in that, It also includes a plurality of third fasteners, each used to detachably and securely connect each of the second adapters to the corresponding grille.

10. The roof grid node assembly structure according to claim 9, characterized in that, The grille has at least two first oblong holes, each extending along the Z-direction in length and along the Y-direction in axial direction. The second adapter has a second oblong hole, extending along the X-direction in length and along the Y-direction in axial direction, penetrating the positioning groove. Both side walls of the second adapter have first teeth, each tooth arranged along the Z-direction. The third fastener includes a positioning shaft, two positioning plates, and two second bolts. The positioning shaft passes through the corresponding first and second oblong holes, and both ends of the positioning shaft have screw holes. The two positioning plates are slidably fitted onto the positioning shaft and are respectively located on both sides of the second adapter. One side wall of each of the two positioning plates has a second tooth, each tooth arranged along the Z-direction. The two second teeth are used to engage with the corresponding first teeth. The two second bolts are screwed into the two screw holes one-to-one and are used to abut or separate from the outer side of the corresponding positioning plate.

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