A loosening prevention mechanism for a lightweight BIPV on a metal roof and its construction method

Abstract

The present invention provides a loosening prevention mechanism for a lightweight BIPV on a metal roof and a construction method thereof. The loosening prevention mechanism for the lightweight BIPV on the metal roof includes a mounting assembly installed on the roof through a loosening prevention assembly and a photovoltaic assembly laid on the mounting assembly. The loosening prevention assembly includes a bracket and two fixing structures. The two ends of the fixing structure respectively penetrate through the roof and the bracket to mount the bracket on the roof. The fixing structure includes a threaded rod, a limiting portion fixed to one end of the threaded rod, a connecting portion connected to the limiting portion, a movable portion rotatably connected to the connecting portion, and an adjusting member installed on the threaded rod. The adjusting member is used to adjust the position of the bracket installed on the threaded rod to improve the installation effect of the photovoltaic assembly.

Description

Technical Field

[0001] The present invention belongs to the technical field of photovoltaics, and particularly relates to a loosening prevention mechanism for lightweight BIPV on metal roofs and a construction method thereof. Background Art

[0002] With the development of the photovoltaic industry and the popularization of green buildings, there are more and more cases of building-integrated photovoltaics (BIPV). Color steel tile photovoltaic modules are widely used on industrial and commercial roofs, and their structure includes color steel tiles, photovoltaic modules and corresponding structural components.

[0003] In the prior art, conventional photovoltaic modules are usually installed on brackets through clamps, and the brackets are then fixed on the roof by bolts to complete the laying of the photovoltaic modules on the roof. However, the existing brackets can only be fixed on the roof by bolts, resulting in the height of the brackets being non-adjustable. When the roof is uneven, the installation surface formed by all the brackets is also uneven, thus affecting the installation of the photovoltaic modules. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides a loosening prevention mechanism for lightweight BIPV on metal roofs and a construction method thereof to solve the technical problems in the above background art.

[0005] On the one hand, the invention provides the following technical solution. A loosening prevention mechanism for lightweight BIPV on metal roofs includes an installation component installed on the roof through a loosening prevention component and a photovoltaic module laid on the installation component.

[0006] The loosening prevention component includes a bracket and two fixing structures. The two ends of the fixing structure respectively penetrate through the roof and the bracket to install the bracket on the roof. The fixing structure includes a threaded rod, a limiting part fixed at one end of the threaded rod, a connecting part connected to the limiting part, a movable part rotatably connected to the connecting part, and an adjusting part installed on the threaded rod. The adjusting part is used to adjust the position of the bracket installed on the threaded rod.

[0007] Compared with the prior art, the beneficial effects of the present invention are as follows: By rotating the movable part, the movable part rotates upward around the connecting part. After the movable part coincides with the threaded rod, one end of the threaded rod that coincides with the movable part sequentially passes through the hole in the roof surface, so that the movable part completely exceeds the support beam of the roof surface until it is below the support beam. At this time, due to its own gravity, the movable part starts to rotate in the opposite direction around the connecting part, so that the cross-sectional dimension of the movable part is larger than the dimension of the hole, preventing the movable part from moving back through the hole; Then lift the threaded rod upward so that the top of the movable part abuts against the bottom of the roof surface to generate resistance to the movable part. Use a tool to tighten the elastic adjusting part on the threaded rod so that the bottom of the elastic adjusting part presses against the top of the roof surface, and the top of the movable part presses against the bottom of the roof surface. At this time, the threaded rod is fixed on the roof surface. Fix another bolt rod on the roof surface in the same way; Then squeeze the height of the elastic adjusting part. When the top of the elastic adjusting part reaches the appropriate height, insert the two ends of the bracket into the two threaded rods respectively, and make the bracket support on the elastic adjusting part of the threaded rod. Then tighten the fixing part on the threaded rod so that the bracket is fixed on the threaded rod by the fixing part and the elastic part, thus completing the installation of the bracket height adjustment. It can be seen that by passing the fixing structure through the entire roof surface and then fixing the bracket on the roof surface, compared with the existing fixture fixing method, it prevents the bracket from detaching and improves the connection stability of the color steel tile photovoltaic module. In addition, through the cooperation of the threaded rod and the movable part, the effect of fixing the threaded rod on the roof surface can be achieved only on one side of the roof surface, so that the bracket can be fastened only on one side of the roof surface, realizing a product with an infinitely large unidirectional riveting thickness, improving the work convenience. In addition, through the cooperation of the elastic adjusting part and the fixing part of the adjusting part, the height of the bracket on the threaded rod is adjusted, making the installation surface formed by all brackets relatively flat and improving the installation effect of the photovoltaic module.

[0008] Further, a limiting groove and a communicating groove are formed on one side of the connecting part. The limiting groove communicates with the communicating groove, and the communicating groove penetrates through the other side of the connecting part. The limiting groove is adapted to the limiting part, the communicating groove is adapted to the threaded rod, and the dimension of the limiting groove is larger than that of the communicating groove, so that the limiting groove and the communicating groove form a step.

[0009] Further, the range of the depth ratio of the limiting groove to the communicating groove is 3:(4 - 9), and the range of the ratio of the diameter of the limiting groove, the diameter of the communicating groove to the height of the connecting part is (6 - 8):(4 - 7):11.

[0010] Further, the adjusting member includes an elastic adjusting component and a fixing component sequentially arranged on the threaded rod from near the limiting portion to away from the limiting portion, and the fixing component and the elastic adjusting component are respectively arranged on both sides of the bracket. The bottom of the elastic adjusting component supports on the roof surface, so that the threaded rod is fixed on the roof surface.

[0011] Further, the adjusting component includes an elastic portion connected to the threaded rod and two fixing caps. The two fixing caps are arranged at both ends of the elastic portion to limit the elastic portion. Wherein, the fixing cap includes a first fixing nut and a protective cover extending from one side of the first fixing nut close to the elastic portion.

[0012] Further, the fixing component includes a second fixing nut, a reinforcing gasket and a third fixing nut sequentially arranged on the threaded rod. The second fixing nut and one of the fixing caps mount the bracket on the threaded rod, and the third fixing nut limits the reinforcing gasket on the second fixing nut.

[0013] Further, at least two reinforcing grooves are annularly arranged on the top of the second fixing nut, and at least two reinforcing portions extend annularly from the bottom of the reinforcing gasket. The reinforcing portions are adapted to the reinforcing grooves to reinforce the second fixing nut;

[0014] The sizes of the reinforcing portions and the reinforcing grooves decrease sequentially from top to bottom.

[0015] Further, the installation assembly includes a first support member, a second support member and a third support member sequentially arranged from bottom to top. The peak section of the first support member and the top of the bracket support on the second support member, so that a first flow cavity is formed between the first support member and the second support member. The trough of the third support member is mounted on the second support member, and the peak of the third support member is mounted on the photovoltaic module, so that a second flow cavity is formed between the photovoltaic module and the third support member.

[0016] Further, a deformation groove is formed at the other end of the threaded rod, and a fixing wedge is arranged in the deformation groove to cause deformation at the other end of the threaded rod. Wherein, the deformation groove penetrates through both sides of the threaded rod, the depth of the deformation groove is less than one-fifth of the overall length of the threaded rod, and a plug is arranged at the other end of the threaded rod.

[0017] On the other hand, the present invention also proposes a construction method for the anti-loosening mechanism of a lightweight BIPV on a metal roof. The construction method includes the following steps:

[0018] Perforate the roof at intervals so that the holes penetrate through the roof;

[0019] Provide a loosening prevention component. Rotate the movable part of the loosening prevention component so that the movable part coincides with the threaded rod. Pass one end of the threaded rod that coincides with the movable part through the hole on the roof. When the movable part completely passes through the roof, the movable part rotates in the opposite direction to reset;

[0020] Install the waterproof component, elastic adjustment component, bracket and fixing component on the threaded rod in sequence through the other end of the threaded rod, and block the hole with the waterproof component;

[0021] Drive the elastic adjustment component and the fixing component to rotate by using a tool so that the top of the bracket on the threaded rod is flush with the peak of the first support on the roof, and the top of the movable part and the bottom of the elastic adjustment component respectively press against both ends of the roof, so that the bracket is fixed on the roof;

[0022] Install the second support on the peak of the first support and the bracket, install the third support on the second support, and lay the photovoltaic module on the third support. Brief Description of the Drawings

[0023] Figure 1 It is a schematic structural diagram of the loosening prevention mechanism of the lightweight BIPV on the metal roof in the first embodiment of the present invention.

[0024] Figure 2 It is a three-dimensional structural diagram of the loosening prevention component in the first embodiment of the present invention.

[0025] Figure 3 It is a three-dimensional structural diagram of the fixing structure in the first embodiment of the present invention.

[0026] Figure 4 For the first embodiment of the present invention Figure 3 The structural diagram in the state where the movable part coincides with the threaded rod.

[0027] Figure 5 It is an exploded view of the fixing structure in the first embodiment of the present invention.

[0028] Figure 6 It is a three-dimensional structural diagram of the movable part in the first embodiment of the present invention.

[0029] Figure 7 It is a three-dimensional structural diagram of the elastic adjustment component in the first embodiment of the present invention.

[0030] Figure 8 It is a three-dimensional structural diagram of the fixing component in the first embodiment of the present invention.

[0031] Figure 9Schematic diagram of the three-dimensional structure of the fixing component in the first embodiment of the present invention from another perspective.

[0032] Figure 10 For the first embodiment of the present invention Figure 1 Schematic diagram of the three-dimensional structure in the state of the disassembly and reset part.

[0033] Figure 11 Flowchart of the construction method of the anti-loosening mechanism of the lightweight BIPV for metal roofing in the second embodiment of the present invention.

[0034] Description of main component symbols: 10, installation component; 11, first support; 12, second support; 13, third support; 131, accommodation groove; 14, first flow cavity; 15, second flow cavity; 20, photovoltaic module; 30, bracket; 40, fixing structure; 41, threaded rod; 411, deformation groove; 412, fixing wedge; 413, plug pin; 42, limiting part; 43, connecting part; 431, limiting groove; 432, communication groove; 44, movable part; 441, reset part; 4411, insertion pin; 4412, straight plate; 4413, inclined plate; 442, insertion hole; 45, adjusting part; 451, elastic adjusting component; 4511, elastic part; 4512, fixing cap; 45121, first fixing nut; 45122, protective cover; 452, fixing component; 4521, second fixing nut; 45211, reinforcement groove; 4522, reinforcement gasket; 45221, reinforcement part; 4523, third fixing nut; 46, wedge gasket; 47, waterproof component; 50, roofing; 51, support beam; 52, framework; 53, insulation layer.

[0035] The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings. Specific Embodiments

[0036] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present invention more thorough and comprehensive.

[0037] It should be noted that when an element is referred to as "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this invention belongs. The terms used in the description of the present invention herein are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0039] Embodiment 1

[0040] Please refer to Figures 1 to 5 As shown, the anti-loosening mechanism of the lightweight BIPV for metal roofing in the first embodiment of the present invention is installed on the installation component 10 of the roofing 50 and the photovoltaic component 20 laid on the installation component 10 through the anti-loosening component;

[0041] Wherein, the anti-loosening component includes a bracket 30 and two fixing structures 40. The two ends of the fixing structure 40 respectively penetrate through the roofing 50 and the bracket 30 to install the bracket 30 on the roofing 50. The fixing structure 40 includes a threaded rod 41, a limiting part 42 fixedly arranged at one end of the threaded rod 41, a connecting part 43 connected to the limiting part 42, a movable part 44 rotatably connected to the connecting part 43, and an adjusting part 45 installed on the threaded rod 41. The adjusting part 45 is used to adjust the position of the bracket 30 installed on the threaded rod 41.

[0042] In this embodiment, the roofing 50 includes a support beam 51, a framework 52, and a thermal insulation layer 53. The top of the movable part 44 is provided with a reverse locking thread to generate a limiting friction force between the movable part 44 and the bottom of the roofing 50. Optionally, the cross-section of the limiting part 42 can be polygonal or circular. A rotating groove is opened at the bottom of the limiting part 42, and the rotating groove can be used for the operation of a screwdriver.

[0043] During specific implementation, rotate the movable part 44 to make the movable part 44 rotate upward around the connecting part 43. After the movable part 44 coincides with the threaded rod 41, one end of the threaded rod 41 that coincides with the movable part 44 sequentially passes through the holes in the heat preservation layer 53, the skeleton 52 and the support beam 51, so that the movable part 44 completely exceeds the support beam 51 until it is below the support beam 51. At this time, due to its own gravity, the movable part 44 starts to rotate in the opposite direction around the connecting part 43, so that the cross-sectional dimension of the movable part 44 is larger than the dimension of the hole, preventing the movable part 44 from moving back through the hole; then lift the threaded rod 41 upward so that the top of the movable part 44 abuts against the bottom of the roof 50 to generate resistance to the movable part 44. Use a tool to tighten the elastic adjusting component 451 on the threaded rod 41 so that the bottom of the elastic adjusting component 451 presses against the top of the roof 50, and the top of the movable part 44 presses against the bottom of the roof 50. At this time, the threaded rod 41 is fixed on the roof 50. Fix another bolt rod on the roof 50 in the same way; then squeeze the height of the elastic adjusting component 451. When the top of the elastic adjusting component 451 reaches the appropriate height, insert the two ends of the bracket 30 into the two threaded rods 41 respectively, and make the bracket 30 support on the elastic adjusting component 451 of the threaded rod 41. Then tighten the fixing component 452 on the threaded rod 41 so that the bracket 30 is fixed on the threaded rod 41 by the fixing component 452 and the elastic component 451, thus completing the installation of the height adjustment of the bracket 30. It can be seen that by passing the fixing structure 40 through the entire roof 50 and then fixing the bracket 30 on the roof 50, compared with the existing fixing method of the clamp, it prevents the bracket 30 from detaching and improves the connection stability of the color steel tile photovoltaic module 20. In addition, through the cooperation of the threaded rod 41 and the movable part 44, the effect of fixing the threaded rod 41 on the roof 50 can be achieved only on one side of the roof 50, so that the bracket 30 can be fastened only on one side of the roof 50, realizing a product with an infinitely large thickness for one-way riveting, improving the convenience of work. In addition, through the cooperation of the elastic adjusting component 451 and the fixing component 452 of the adjusting part 45, the height of the bracket 30 on the threaded rod 41 is adjusted, making the installation surface formed by all the brackets 30 relatively flat and improving the installation effect of the photovoltaic module 20.

[0044] Please refer to Figure 6As shown, specifically, a limiting groove 431 and a communicating groove 432 are formed on one side of the connecting part 43. The limiting groove 431 communicates with the communicating groove 432, and the communicating groove 432 penetrates through the other side of the connecting part 43. The limiting groove 431 is adapted to the limiting part 42, and the communicating groove 432 is adapted to the threaded rod. Moreover, the size of the limiting groove 431 is larger than that of the communicating groove 432, so that a step is formed between the limiting groove 431 and the communicating groove 432. The size of the movable part 44 is larger than that of the connecting part 43. It should be noted that through the setting of forming the step, the pulling force at the bottom of the threaded rod 41 can be effectively increased, thereby improving the connection firmness between the threaded rod 41 and the roof 50, and it can also effectively prevent the connecting part 43 and the movable part 44 from detaching from the threaded rod 41 during the construction process.

[0045] More specifically, the range of the depth ratio between the limiting groove 431 and the communicating groove 432 is 3:(4 - 9), and the range of the ratio between the diameter of the limiting groove 431, the diameter of the communicating groove 432 and the height of the connecting part 43 is (6 - 8):(4 - 7):11. In this embodiment, the depth ratio between the limiting groove 431 and the communicating groove 432 is 3:7. The depth of the limiting groove 431 is 3 mm, the depth of the communicating groove 432 is 7 mm, the connecting part 43 is cylindrical, and the ratio between the diameter of the limiting groove 431, the diameter of the communicating groove 432 and the height of the connecting part 43 is 7.1:5.7:11, that is, the diameters of the limiting groove 431 and the communicating groove 432 are 7.1 mm and 5.7 mm respectively, and the height of the connecting part 43 is 11 mm. Through the setting of the above dimensions, the pulling force of the bottom structure of the threaded rod 41 is effectively increased, and its pulling force reaches 12 KN.

[0046] Please refer to Figures 7 to 8 As shown, specifically, the adjusting part 45 includes an elastic adjusting component 451 and a fixing component 452 which are sequentially arranged on the threaded rod 41 from near the limiting part 42 to far from the limiting part 42. Moreover, the fixing component 452 and the elastic adjusting component 451 are respectively arranged on both sides of the bracket 30, and the bottom of the elastic adjusting component 451 supports on the roof 50, so that the threaded rod 41 is fixed on the roof 50.

[0047] More specifically, the adjusting member includes an elastic part 4511 connected to the threaded rod 41 and two fixing caps 4512. The two fixing caps 4512 are arranged at both ends of the elastic part 4511 to limit the elastic part 4511. Among them, the fixing cap 4512 includes a first fixing nut 45121 and a protective cover 45122 extending from one side of the first fixing nut 45121 close to the elastic part 4511. In this embodiment, the elastic part 4511 is a reinforcing spring, which is sleeved on the threaded rod 41, and its two ends are respectively in contact with the two fixing caps 4512. The thickness of the first fixing nut 45121 is greater than the thickness of the M6 nut to increase the contact area between the nut and the threaded rod 41 so that its strength reaches the strength of the M10 nut. It is worth noting that through the setting of the protective cover 45122, the elastic part 4511 can be effectively limited between the two fixing caps 4512. In addition, through the setting of the elastic part 4511, on the one hand, the distance between the two fixing caps 4512 can be adjusted, and on the other hand, the two fixing caps 4512 and the elastic part 4511 are integrated to enhance the structural force and make the installed bracket 30 more stable. In actual use, in order to help with the waterproofing of the roof 50, the hole for installing the threaded rod 41 should be made as small as possible. Therefore, in this application, the thickness of the first fixing nut 45121 is selected to be greater than the thickness of the M6 nut.

[0048] More specifically, the fixing member 452 includes a second fixing nut 4521, a reinforcing gasket 4522 and a third fixing nut 4523 arranged in sequence on the threaded rod 41. The second fixing nut 4521 and one of the fixing caps 4512 install the bracket 30 on the threaded rod 41, and the third fixing nut 4523 limits the reinforcing gasket 4522 on the second fixing nut 4521. Through the cooperation of the second fixing nut 4521, the reinforcing gasket 4522 and the third fixing nut 4523, the bracket 30 is stably limited on the threaded rod 41.

[0049] Specifically, at least two reinforcing grooves 45211 are annularly arranged at the top of the second fixing nut 4521. At least two reinforcing portions 45221 extend annularly at the bottom of the reinforcing gasket 4522. The reinforcing portions 45221 are adapted to the reinforcing grooves 45211 to reinforce the second fixing nut 4521. The sizes of the reinforcing portions 45221 and the reinforcing grooves 45211 decrease successively from top to bottom. In this embodiment, the number of the reinforcing portions 45221 and the reinforcing grooves 45211 is three, and the reinforcing gasket 4522 and the reinforcing portions 45221 are made of rubber. During specific application, the reinforcing portions 45221 are inserted into the reinforcing grooves 45211, and the third fixing nut 4523 is tightened so that the third fixing nut 4523 squeezes and limits the reinforcing portions 45221 of the reinforcing gasket 4522 into the limiting groove 431. Among them, the size of the reinforcing portion 45221 is larger than that of the reinforcing groove 45211. Therefore, after the reinforcing portion 45221 is inserted into the reinforcing groove 45211, the reinforcing portion 45221 is deformed by extrusion. The deformed reinforcing portion 45221 partially squeezes between the gap between the threaded rod 41 and the second fixing nut 4521, improving the stability of the second fixing nut 4521 on the threaded rod 41.

[0050] Further, in order to improve the stability of the fixing member 452 on the threaded rod 41, a deformation groove 411 is provided at the other end of the threaded rod 41. A fixing wedge 412 is arranged in the deformation groove 411 to deform the other end of the threaded rod 41. Among them, the deformation groove 411 penetrates through both sides of the threaded rod 41. The depth of the deformation groove 411 is less than one-fifth of the overall length of the threaded rod 41. An insertion pin 413 is arranged at the other end of the threaded rod 41. The insertion pin 413 is inserted into the end of the threaded rod 41 and the fixing wedge 412 respectively to fix the fixing wedge 412 at the bottom of the threaded rod 41.

[0051] It can be understood that the first fixing cap 4512, the elastic portion 4511, the second fixing cap 4512, the bracket 30, the second fixing nut 4521 and the third fixing nut 4523 are sequentially arranged on the threaded rod 41, so that the above-mentioned multiple structures form an integral body, which can effectively make the threaded rod 41 more stably positioned on the roof 50, and can effectively make the bracket 30 more stably positioned on the threaded rod 41, thereby making the installed photovoltaic module 20 more stable.

[0052] Specifically, the installation component 10 includes a first support member 11, a second support member 12, and a third support member 13 arranged in sequence from bottom to top. The peak section of the first support member 11 and the top of the bracket 30 are supported on the second support member 12, so as to form a first flow cavity 14 between the first support member 11 and the second support member 12. The trough of the third support member 13 is installed on the second support member 12, and the peak of the third support member 13 is installed on the photovoltaic module 20, so as to form a second flow cavity 15 between the photovoltaic module 20 and the third support member 13.

[0053] In this embodiment, both the first support member 11 and the third support member 13 are any one of T-shaped color steel tiles, angle-purlin type color steel tiles, standing-seam type color steel tiles, corrugated color steel tiles, 360-degree bite type color steel tiles, snap-lock type color steel tiles, seamed type color steel tiles, or colored metal profiled tiles. Among them, the formed first flow cavity 14 and second flow cavity 15 can effectively dissipate heat from the photovoltaic. The second support member 12 is a flat iron. Specifically, during implementation, the first support member 11 is fixed to the roof surface 50 by an elastic adjustment member 451, the second support member 12 is riveted to the bracket 30, and the third support member 13 is then riveted to the second support member 12. Among them, a receiving groove 131 is formed at the peak top of the third support member 13 for receiving and fixing glue to install the photovoltaic module.

[0054] In an alternative implementation, the first support member 11 is a part of the existing roof surface 50, that is, when installing the bracket, the existing roof already has the first support member 11, and there is no need to install the first support member 11 again.

[0055] Furthermore, in order to improve the waterproof effect after drilling, the threaded rod 41 is provided with a waterproof component 47. The waterproof component 47 includes a composite waterproof gasket and a rubber plug gasket that are respectively sleeved on the threaded rod 41 in sequence. The cross-section of the rubber plug gasket is T-shaped, and a limiting thread is provided at the bottom of the rubber plug gasket. During specific installation, a plurality of wedge-shaped gaskets 46 are also sleeved on the threaded rod 41.

[0056] In this embodiment, the movable part 44 includes a bottom plate, side plates respectively bent on both sides of the bottom plate, and reverse lock patterns provided on the tops of the side plates, so that the side plates are limited to the bottom of the roof surface 50.

[0057] Please refer to Figures 9 to 10, a reset part 441 is detachably connected inside the bottom plate of the movable part 44. The reset part 441 includes a straight plate 4412. One end of the straight plate 4412 is bent upward to form an inclined plate 4413, and the bottom of the straight plate 4412 is bent downward to form a pin 4411. A jack 442 is formed on the bottom plate of the movable part 44, and the jack 442 is adapted to the pin 4411. In this embodiment, the angle formed by the straight plate 4412 and the inclined plate 4413 is an acute angle. Among them, the pin 4411 is formed by cutting out two pins 4411 from the middle of the straight plate 4412 and then bending.

[0058] In an alternative embodiment, in the above description, the movable part 44 starts to rotate in the opposite direction around the connecting part 43 by its own gravity, and the designed reset part 441 can enable the movable part 44 to move directly in the opposite direction through the restoring force of the reset part 441. Specifically, when the movable part 44 coincides with the threaded rod 41, the threaded rod 41 squeezes the reset part to deform. When the movable part 44 completely passes through the hole of the support beam 51, through the restoring force of the reset part 441, the movable part 44 starts to rotate in the opposite direction around the connecting part 43.

[0059] In this embodiment, the cross-section of the bracket 30 is in a "ji" - shaped structure. First through - holes are formed at both ends of the "ji" - shaped structure, and a second through - hole is formed at the top of the "ji" - shaped structure. The second through - hole can be used to install expansion bolts or fixing bolts.

[0060] Embodiment Two

[0061] Please refer to Figure 11 , which shows a construction method of a loosening - proof mechanism for a lightweight BIPV on a metal roof in the second embodiment of the present invention. The method includes the following steps: Step S01 to Step S05;

[0062] S01, punch holes in the roof at intervals so that the holes penetrate through the roof;

[0063] Specifically, in the case of an existing roof with color steel tiles (the first support member), punch holes in pairs at the corresponding trough sections of the color steel tiles for the roof and the trough sections so that the holes penetrate through the support beam, the skeleton, and the insulation layer. The number of punched holes is arranged in pairs, and the two holes in a pair respectively correspond to the two first through - holes of the bracket. When laying the color steel tiles, the installation method of the color steel tiles is lap joint. A first double - sided waterproof strip is laid at the wave peak of the lap area of two color steel tiles, and a second waterproof strip with waterproof and adhesive properties is laid at the wave trough lap area. The lap area forms a double - layer waterproof barrier to reduce the risk of water leakage.

[0064] S02. Provide a loosening prevention component. Rotate the movable part of the loosening prevention component so that the movable part coincides with the threaded rod. Pass one end of the threaded rod that coincides with the movable part through the hole in the roof surface. When the movable part completely passes through the roof surface, rotate the movable part in the opposite direction to reset it.

[0065] Specifically, provide a number of loosening prevention components. First, rotate the movable part at one end of the threaded rod of the fixed structure of the loosening prevention component upward around the connecting part so that the movable part coincides with the threaded rod. Then, pass one end of the threaded rod that coincides with the movable part through the hole in the roof surface until it completely passes through the roof surface. After completely passing through, shake the threaded rod up and down so that the movable part rotates in the opposite direction due to its own gravity, so that the size of the cross-section of the movable part is larger than the size of the hole, that is, the movable part that coincides with the threaded rod is slowly opened. After opening until the movable part cannot pass through the hole, the next step can be carried out.

[0066] S03. Install the waterproof component, elastic adjustment component, bracket and fixing component on the threaded rod in sequence through the other end of the threaded rod, and block the hole with the waterproof component.

[0067] Specifically, sleeved the waterproof component on the threaded rod so that the waterproof component blocks the hole in the first support and the roof surface. Then, install the elastic adjustment component, bracket and fixing component on the threaded rod in sequence.

[0068] S04. Use a tool to drive the elastic adjustment component and the fixing component to rotate so that the top of the bracket on the threaded rod is flush with the peak of the first support on the roof surface, and the top of the movable part and the bottom of the elastic adjustment component respectively squeeze both ends of the roof surface so that the bracket is fixed on the roof surface.

[0069] Specifically, lift the threaded rod upward so that the top of the movable part abuts against the bottom of the roof surface to generate resistance to the movable part. Use a tool to tighten the elastic adjustment component on the threaded rod so that the bottom of the elastic adjustment component squeezes the top of the roof surface, and the top of the movable part squeezes the bottom of the roof surface. At this time, the threaded rod is fixed on the roof surface. Fix another bolt rod on the roof surface in the same way. Then, squeeze the height of the elastic adjustment component. When the top of the elastic adjustment component reaches the appropriate height, pass both ends of the bracket through the two threaded rods respectively, and make the bracket support on the elastic adjustment component of the threaded rod. Then, tighten the fixing component on the threaded rod so that the bracket is fixed on the threaded rod by the fixing component and the elastic component, thus completing the installation of the bracket height adjustment. At the same time, the top of the adjusted bracket is on the same plane as the peak top of the first support.

[0070] S05. Install the second support member on the crest of the first support member and the bracket, install the third support member on the second support member, and lay the photovoltaic module on the third support member.

[0071] Specifically, lay the flat iron (the second support member) on the crest of the first support member and the bracket, then lay the new color steel tile (the third support member) on the bracket, and then pass the expansion bolts or rivets through the crest of the new color steel tile, the flat iron and the bracket to fix the new color steel tile, the flat iron and the bracket together. Finally, lay the photovoltaic module on the new color steel tile. Among them, a receiving groove is provided at the top of the crest of the new color steel tile for receiving the fixing glue to install the photovoltaic module.

[0072] In summary, for the anti-loosening mechanism of the lightweight BIPV on the metal roof and its construction method in the above embodiments of the present invention, by rotating the movable part to make the movable part rotate upward around the connecting part. When the movable part coincides with the threaded rod, then one end of the threaded rod that coincides with the movable part sequentially passes through the holes in the thermal insulation layer, the skeleton and the support beam, so that the movable part completely exceeds the support beam until it is below the support beam. At this time, due to its own gravity, the movable part starts to rotate in the reverse direction around the connecting part, so that the cross-sectional dimension of the movable part is larger than the size of the hole, preventing the movable part from moving back through the hole; then lift the threaded rod upward so that the top of the movable part abuts against the bottom of the roof to generate resistance to the movable part, and use tools to tighten the elastic adjusting part on the threaded rod so that the bottom of the elastic adjusting part presses against the top of the roof, and the top of the movable part presses against the bottom of the roof. At this time, the threaded rod is fixed on the roof, and another bolt rod is fixed on the roof in the same way; then squeeze the height of the elastic adjusting part. When the top of the elastic adjusting part reaches the appropriate height, insert the two ends of the bracket into the two threaded rods respectively, and make the bracket support on the elastic adjusting part of the threaded rod. Then tighten the fixing part on the threaded rod so that the bracket is fixed on the threaded rod by the fixing part and the elastic part, thus completing the installation of the bracket height adjustment. It can be seen that by passing the fixing structure through the entire roof and then fixing the bracket on the roof, compared with the existing fixture fixing method, it prevents the bracket from detaching and improves the connection stability of the color steel tile photovoltaic module. In addition, through the cooperation of the threaded rod and the movable part, the effect of fixing the threaded rod on the roof can be achieved only on one side of the roof, so that the bracket can be fastened only on one side of the roof, realizing a product with an infinitely large unidirectional riveting thickness, improving the convenience of work. In addition, through the cooperation of the elastic adjusting part and the fixing part of the adjusting part, the height of the bracket on the threaded rod is adjusted, making the installation surface formed by all the brackets relatively flat and improving the installation effect of the photovoltaic module.

[0073] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0074] The above-described embodiments merely represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent for the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention shall be subject to the appended claims.

Claims

1. A metal roof lightweight BIPV anti-loosening mechanism, characterized in that: include: A mounting assembly installed on the roof through an anti-loosening assembly and a photovoltaic assembly laid on the mounting assembly; The anti-loosening assembly includes a bracket and two fixing structures, the two ends of the fixing structure respectively penetrate the roof and the bracket to install the bracket on the roof, the fixing structure includes a threaded rod, a limiting part fixed to one end of the threaded rod, a connecting part connected to the limiting part, a movable part rotatably connected to the connecting part and an adjusting member installed on the threaded rod, and the adjusting member is used to adjust the position of the bracket installed on the threaded rod; A limiting groove and a connecting groove are provided on one side of the connecting portion, the limiting groove is connected with the connecting groove, and the connecting groove runs through the other side of the connecting portion, the limiting groove is matched with the limiting portion, the connecting groove is matched with the threaded rod, and the size of the limiting groove is larger than the size of the connecting groove, so that the limiting groove and the connecting groove form a step; The adjusting member comprises an elastic adjusting component and a fixing component which are sequentially arranged on the threaded rod from close to the limiting portion to away from the limiting portion, and the fixing component and the elastic adjusting component are respectively arranged on both sides of the bracket, the bottom of the elastic adjusting component is supported on the roof so that the threaded rod is fixed to the roof, the fixing component comprises a second fixing nut, a reinforcement gasket and a third fixing nut which are sequentially arranged on the threaded rod, the second fixing nut and one of the fixing caps install the bracket on the threaded rod, the third fixing nut is used to limit the reinforcement gasket on the second fixing nut, the top annular array of the second fixing nut has at least two reinforcement grooves, the bottom annular array of the reinforcement gasket extends with at least two reinforcement parts, the reinforcement part is adapted to the reinforcement groove to reinforce the second fixing nut; The sizes of the reinforcement portion and the reinforcement groove decrease from top to bottom; The adjusting component includes an elastic part connected to the threaded rod and two fixing caps, the two fixing caps are arranged at both ends of the elastic part to limit the elastic part, wherein the fixing cap includes a first fixing nut and a protective cover extending from one side of the first fixing nut close to the elastic part; A reset part is detachably connected to the bottom plate of the movable part, and the reset part includes a straight plate, one end of the straight plate is bent upward to form an inclined plate, and the bottom of the straight plate is bent downward to form a pin, and a plug hole is opened on the bottom plate of the movable part, and the plug hole is adapted to the pin, and the angle formed by the straight plate and the inclined plate is an acute angle, wherein the pin is formed by cutting two pins in the middle of the straight plate and then bending them.

2. The anti-loosening mechanism of the lightweight BIPV metal roof according to claim 1 is characterized in that: The depth ratio of the limiting groove to the connecting groove is in the range of 3:(4-9), and the ratio of the diameter of the limiting groove, the diameter of the connecting groove and the height of the connecting portion is in the range of (6-8):(4-7):

11.

3. The anti-loosening mechanism of lightweight BIPV metal roof according to claim 1 is characterized in that: The mounting assembly includes a first support member, a second support member and a third support member which are arranged in sequence from bottom to top, the crest section of the first support member and the top of the bracket are supported on the second support member to form a first flow cavity between the first support member and the second support member, the trough of the third support member is installed on the second support member, and the crest of the third support member is installed on the photovoltaic component to form a second flow cavity between the photovoltaic component and the third support member.

4. The anti-loosening mechanism of the metal roof lightweight BIPV according to claim 1 is characterized in that: A deformation groove is formed at the other end of the threaded rod, and a fixed wedge is arranged in the deformation groove to cause the other end of the threaded rod to deform, wherein the deformation groove runs through both sides of the threaded rod, the depth of the deformation groove is less than one fifth of the overall length of the threaded rod, and a pin is arranged at the other end of the threaded rod.

5. A construction method for the anti-loosening mechanism of the metal roof lightweight BIPV according to any one of claims 1 to 4, characterized in that: The method comprises the following steps: Punching holes in the roof at intervals so that the holes penetrate the roof; Provide an anti-loosening assembly, rotate the movable part of the anti-loosening assembly so that the movable part overlaps with the threaded rod, and pass one end of the threaded rod overlapping with the movable part through the hole of the roof. When the movable part completely passes through the roof, the movable part is reset and rotated in the opposite direction; Install the waterproof component, the elastic adjustment component, the bracket and the fixing component on the threaded rod in sequence through the other end of the threaded rod, and block the hole with the waterproof component; The elastic adjustment component and the fixing component are driven to rotate by a tool, so that the top of the bracket on the threaded rod is flush with the crest of the first support member on the roof, and the top of the movable part and the bottom of the elastic adjustment component are pressed against the two ends of the roof respectively, so that the bracket is fixed on the roof; The second support member is installed on the crest of the first support member and the bracket, the third support member is installed on the second support member, and the photovoltaic components are laid on the third support member.

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