A roof distributed photovoltaic panel mounting structure and a construction method thereof

Abstract

The application relates to the technical field of photovoltaic support installation, and discloses a roof distributed photovoltaic panel installation structure and a construction method thereof, which comprises a photovoltaic panel body, a first load-bearing cross beam and a second load-bearing cross beam arranged in parallel, the photovoltaic panel body is placed on the top surface of the first load-bearing cross beam and the second load-bearing cross beam, characterized in that a cross beam inner sliding groove is formed in the upper portion of the first load-bearing cross beam, a connecting sliding block is clamped and arranged to slide in the cross beam inner sliding groove, a fixed bolt A is fixedly arranged on the top of the connecting sliding block, a self-tapping drill tail screw with a stop block is used in cooperation with the base, the base is supported and limited by the stop block, different installation procedures of front and rear rows are adapted, the on-site arrangement construction rhythm is adapted, the support downward pressure is evenly dispersed, the base is prevented from being damaged due to stress, the base displacement condition is reduced, the bottom support installation is made more reliable, and the roof is adapted for long-term outdoor use.

Description

Technical Field

[0001] This application relates to the field of photovoltaic bracket installation technology, and in particular to a rooftop distributed photovoltaic panel installation structure and its construction method. Background Technology

[0002] Currently, most rooftop distributed photovoltaic panels are installed and fixed using a fixed bracket structure, which is suitable for rooftop installation. However, existing photovoltaic installation structures still have two defects in actual rooftop construction and use, making it difficult to adapt to diverse rooftop construction conditions.

[0003] Firstly, existing photovoltaic load-bearing beams and support brackets are mostly integrated fixed structures. The position of the beam clamp, the height of the bottom support bracket, and the beam docking position cannot be flexibly adjusted. When there are differences in roof slope or deviations in installation dimensions, it is necessary to drill holes and cut components on-site. This not only damages the roof waterproof layer but also cannot accommodate the fine adjustment of the photovoltaic panel assembly spacing. The overall installation adaptability is poor, the construction error tolerance is low, and it is difficult to adapt to non-standard roof construction.

[0004] Secondly, the existing photovoltaic base fixing screw installation method is uniform. The entire row of bases is installed by first driving in the screws and then placing the base. When arranging the photovoltaic bases later, the fixed screws will interfere with the alignment of the bases, making it difficult to control the neatness of the arrangement. At the same time, the conventional screws have no positioning structure, and the screws are prone to excessive pressure and squeezing of the base. Under the long-term influence of wind and vibration from the roof, the threaded connection is prone to loosening, resulting in insufficient overall fixing stability of the photovoltaic panels and a large amount of maintenance and reinforcement work in the later stage.

[0005] Based on the existing problems mentioned above, there is an urgent need to optimize a rooftop distributed photovoltaic panel installation structure that can be adaptively adjusted in multiple positions, accommodates the installation of different screws at the beginning and end of the row, and has better fixing stability. Summary of the Invention

[0006] This application provides a rooftop distributed photovoltaic panel installation structure and its construction method, which adopts the following technical solution:

[0007] A rooftop distributed photovoltaic panel installation structure and its construction method include a photovoltaic panel body, a first load-bearing crossbeam and a second load-bearing crossbeam arranged in parallel, wherein the photovoltaic panel body is placed on the top surface of the first load-bearing crossbeam and the second load-bearing crossbeam, wherein the upper part of the first load-bearing crossbeam has an inner groove, a connecting slider is slidably engaged in the inner groove, a fixing bolt A is fixedly installed on the top of the connecting slider, the fixing bolt A extends upward out of the first load-bearing crossbeam and is connected to a photovoltaic panel clamp, and the photovoltaic panel clamp is pressed against the edge of the photovoltaic panel body;

[0008] The lower part of the first load-bearing crossbeam is provided with a sliding groove, and a fixing nut A is slidably engaged in the sliding groove. A bracket adjustment arm is provided below the first load-bearing crossbeam. The bracket adjustment arm is provided with an adjustment slot A. The screw of the fixing nut A passes downward through the adjustment slot A. An anti-slip washer and a locking nut are sequentially fitted on the screw of the fixing nut A. The locking nut cooperates with the fixing nut A to lock the bracket adjustment arm to the bottom of the first load-bearing crossbeam.

[0009] An adjustment support bracket is provided on one side of the bracket adjustment arm. An adjustment slot B is provided on the adjustment support bracket. The adjustment slot A and the adjustment slot B are positioned corresponding to each other and are fixed by bolts.

[0010] The lower end of the adjustable support bracket is connected to a roof fixing base, and the roof fixing base has a fixing installation hole, in which a self-tapping screw is inserted.

[0011] Preferably, the photovoltaic panel pressing code includes a photovoltaic panel side pressing code and a photovoltaic panel center pressing code. The photovoltaic panel side pressing code is pressed onto the side edge of a single photovoltaic panel body, and the photovoltaic panel center pressing code is pressed onto the mating edge of two adjacent photovoltaic panel bodies.

[0012] Preferably, the bracket adjusting arm has an L-shaped bent structure, and an adjusting slot A is provided on both the horizontal and vertical sections of the bracket adjusting arm, with the adjusting slot A of the vertical section extending in the vertical direction.

[0013] Preferably, a connecting block is fixedly connected to the lower end of the adjusting support bracket, and the connecting block is locked and fixed to the roof fixing base by bolts.

[0014] Preferably, a slotted nut B is slidably engaged in the bottom groove of the second load-bearing crossbeam. A transition plate is provided below the second load-bearing crossbeam. The transition plate has an adjusting slot C and a fixing hole. The screw of the slotted nut B passes downward into the adjusting slot C and is locked by the nut. A bolt post passes through the fixing hole. The upper end of the bolt post has a rotating end. A stop block is fixedly provided on the body of the bolt post. A self-tapping screw is coaxially connected to the lower end of the bolt post. Two fixing nuts B are also threadedly connected to the bolt post. The fixing nuts B fix the transition plate to the bolt post.

[0015] Preferably, the shank of the self-tapping screw that passes through the mounting hole is fixedly provided with a stop block, the stop block is positioned above the mounting hole, and the outer diameter of the stop block is larger than the diameter of the mounting hole.

[0016] Preferably, in step S1, at the preset installation point on the roof, the rotating end is rotated to drive the self-tapping screw at the lower end of the bolt column into the interior of the roof to complete the fixation, so that the bolt column stands vertically on the roof surface; the fixing nut B located below is screwed into the bolt column to the preset height position.

[0017] S2. Insert the slotted nut B into the bottom groove of the second load-bearing crossbeam, so that the slotted nut B passes through the adjustment slot C on the adapter plate, and tighten the nut to complete the pre-fixation of the slotted nut B and the adapter plate; put the fixing hole of the adapter plate into the bolt post and let it fall on the fixing nut B below, and then screw the fixing nut B above into the bolt post. The adapter plate is fixed by clamping the upper and lower fixing nuts B, and the erection of the second load-bearing crossbeam is completed.

[0018] S3. Fix the roof fixing base to the corresponding installation point on the roof. Lock the connecting block at the lower end of the adjusting support bracket to the roof fixing base with bolts. Align the bracket adjusting arm with the adjusting support bracket so that the adjusting long slot A and adjusting long slot B are in the same position. Insert the bolt and pre-tighten it. Insert the fixing nut A into the sliding slot of the first load-bearing crossbeam. Set the first load-bearing crossbeam above the bracket adjusting arm so that the screw of the fixing nut A is inserted into the adjusting long slot A. Then, put on the anti-slip pad and the locking nut in sequence and pre-tighten it to complete the erection of the first load-bearing crossbeam.

[0019] S4. Insert the connecting slider into the inner groove of the first and second load-bearing crossbeams. Place the photovoltaic panel body flat on the top surface of the first and second load-bearing crossbeams. After adjusting the position of the photovoltaic panel body, put the photovoltaic panel clamping set into the fixing bolt A and lock it so that the photovoltaic panel clamping set presses against and fixes the edge of the photovoltaic panel body.

[0020] S5. When installing the next row of support structures, first place the roof fixing base at the corresponding point on the roof, align the fixing mounting hole with the installation point, and then screw the self-tapping screw through the fixing mounting hole from top to bottom into the roof to complete the fixing. Repeat the above installation steps for the bracket, beam and photovoltaic panel body to complete the laying of multiple rows of structures.

[0021] S6. After adjusting the relative positions of each component along each long slot and correcting the installation accuracy of the photovoltaic panel body, tighten all bolts and nuts to complete the overall construction.

[0022] In summary, this application includes the following beneficial technical effects:

[0023] 1. The first and second load-bearing crossbeams have built-in sliding grooves and long slots that work together to freely adjust the position of the photovoltaic panels, the placement of the crossbeams, and the support height of the brackets. This adapts to roof height differences and installation deviations. No grinding or drilling is required during construction. Individual photovoltaic panels and spliced ​​photovoltaic panels can be fixed separately. This adapts to various roof installation methods and facilitates on-site adjustment of the installation position.

[0024] 2. When used with a self-tapping screw with a stop block in conjunction with the base, the stop block supports and limits the base, adapting to different installation procedures in the front and rear rows, adapting to the on-site layout and construction rhythm, evenly distributing the downward pressure of the bracket, avoiding damage to the base due to stress, conforming to the roof installation environment, reducing base displacement, making the bottom support installation more reliable, and suitable for long-term outdoor use on the roof.

[0025] 3. By using gaskets and multiple sets of nuts to press and fix the components, and with the sliding block slot for limiting and fitting, the tightness of the components is improved, resisting the impact of outdoor wind and shaking, reducing the possibility of nuts loosening, and the overall components are easy to disassemble and assemble. Individual parts can be disassembled and replaced, reducing the difficulty of later photovoltaic support maintenance. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the side structure of the present invention;

[0028] Figure 3 For the present invention Figure 2 Enlarged structural diagram at point A in the middle;

[0029] Figure 4 This is a schematic diagram of the roof fixing base structure of the present invention;

[0030] Figure 5 This is a schematic diagram of the first load-bearing crossbeam structure of the present invention;

[0031] Figure 6 This is a schematic diagram of the structure of the side of the first load-bearing crossbeam and the fixing nut A in this invention;

[0032] Figure 7 This is a schematic diagram of the slot nut B structure of the present invention;

[0033] Figure 8 This is a schematic diagram of the self-tapping drill screw structure of the present invention.

[0034] Explanation of reference numerals in the attached drawings: 1. Photovoltaic panel body; 2. First load-bearing crossbeam; 3. Second load-bearing crossbeam; 4. Inner groove of the crossbeam; 5. Connecting slider; 6. Fixing bolt A; 7. Side pressure plate of photovoltaic panel; 8. Middle pressure plate of photovoltaic panel; 9. Sliding groove; 10. Fixing nut A; 11. Anti-slip pad; 12. Locking nut; 13. Bracket adjusting arm; 14. Adjusting long slot hole A; 15. Adjusting support bracket; 16. Adjusting long slot hole B; 17. Connecting block; 18. Roof fixing base; 19. Fixing installation hole; 20. Slot nut B; 21. Adjusting long slot hole C; 22. Fixing hole; 23. Fixing nut B; 24. Bolt post; 25. Rotating end; 26. Stop block; 27. Self-tapping screw. Detailed Implementation

[0035] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0036] Reference Figure 1-8 This invention provides a rooftop distributed photovoltaic panel installation structure and its construction method, including a photovoltaic panel body 1, a first load-bearing crossbeam 2 and a second load-bearing crossbeam 3 arranged in parallel, the photovoltaic panel body 1 being placed on the top surface of the first load-bearing crossbeam 2 and the second load-bearing crossbeam 3, characterized in that the upper part of the first load-bearing crossbeam 2 is provided with a crossbeam inner groove 4, a connecting slider 5 is slidably engaged in the crossbeam inner groove 4, a fixing bolt A6 is fixedly provided on the top of the connecting slider 5, the fixing bolt A6 extends upward out of the first load-bearing crossbeam 2 and is connected to a photovoltaic panel pressing bracket, the photovoltaic panel pressing bracket is pressed against the edge of the photovoltaic panel body 1;

[0037] The lower part of the first load-bearing crossbeam 2 is provided with a sliding groove 9, and a fixing nut A10 is slidably locked in the sliding groove 9. A bracket adjustment arm 13 is provided below the first load-bearing crossbeam 2. An adjustment slot A14 is provided on the bracket adjustment arm 13. The screw of the fixing nut A10 passes downward into the adjustment slot A14. An anti-slip pad 11 and a locking nut 12 are sequentially fitted on the screw of the fixing nut A10. The locking nut 12 and the fixing nut A10 cooperate to lock the bracket adjustment arm 13 to the bottom of the first load-bearing crossbeam 2.

[0038] An adjustment support bracket 15 is provided on one side of the bracket adjustment arm 13. An adjustment long slot B16 is provided on the adjustment support bracket 15. The adjustment long slot A14 and the adjustment long slot B16 are positioned corresponding to each other and are locked and fixed by bolts.

[0039] The lower end of the adjustable support bracket 15 is connected to the roof fixing base 18, and the roof fixing base 18 has a fixing installation hole 19, and a self-tapping screw 27 is inserted into the fixing installation hole 19.

[0040] The photovoltaic panel body 1 is placed on top of the first load-bearing crossbeam 2 and the second load-bearing crossbeam 3, with the entire weight supported by the two crossbeams. The inner groove 4 of the crossbeams allows the connecting slider 5 to slide freely, adjusting the position of the fixing bolt A6 and thus changing the position of the photovoltaic panel clamp, adapting to different placement positions of the photovoltaic panel body 1. The sliding groove 9 can drive the fixing nut A10 to slide laterally, matching different installation positions of the bracket adjusting arm 13. The bracket adjusting arm 13 uses the adjusting long slot hole A14 and the adjusting long slot hole B16 of the adjusting support bracket 15 to be misaligned, adapting to roof slopes and height differences. The anti-slip pad 11 reduces the gap between components, reducing component wobbling. The locking nut 12 cooperates with the fixing nut A10 to fix the position of the bracket adjusting arm 13. The roof fixing base 18 supports the weight of all components above, and the fixing mounting hole 19 allows for the insertion and fixing of self-tapping screws 27. Multiple positions are adjustable, adapting to various roof construction methods. The components are evenly stressed, easy to assemble and disassemble, and suitable for use with minor roof deformation.

[0041] In a preferred embodiment, the photovoltaic panel pressing code includes a photovoltaic panel side pressing code 7 and a photovoltaic panel center pressing code 8. The photovoltaic panel side pressing code 7 is pressed onto the side edge of a single photovoltaic panel body 1, and the photovoltaic panel center pressing code 8 is pressed onto the mating edge of two adjacent photovoltaic panel bodies 1.

[0042] The side clamp 7 of the photovoltaic panel presses firmly against the side of a single photovoltaic panel body 1, restricting the lateral displacement of the single photovoltaic panel body 1. The middle clamp 8 of the photovoltaic panel presses against the splicing point of two adjacent photovoltaic panel bodies 1, simultaneously fixing the two photovoltaic panel bodies 1. The two clamps work together to adapt to both single-panel laying and multi-panel splicing installation methods. Construction can be carried out without changing accessories. The pressing force is uniform, avoiding excessive stress on the corners of the photovoltaic panel body 1. It also adapts to the daily thermal expansion and contraction of the photovoltaic panel body 1, making the arrangement of the photovoltaic panel bodies 1 more neat.

[0043] In a preferred embodiment, the bracket adjusting arm 13 has an L-shaped bent structure, and an adjusting long slot A14 is provided on both the horizontal and vertical sections of the bracket adjusting arm 13. The adjusting long slot A14 of the vertical section extends in the vertical direction.

[0044] The L-shaped adjustable arm 13 provides both horizontal and vertical support. The horizontal section's adjustable slot A14 allows for fine-tuning of the first load-bearing beam 2's lateral position, while the vertical section's adjustable slot A14, arranged vertically, allows for fine-tuning of the overall support height. These two adjustments are independent of each other, adapting to varying roof heights and spacing deviations. The L-shaped structure enhances the overall support strength of the adjustable arm 13, smoothly bearing the weight transmitted from the first load-bearing beam 2. No on-site drilling or modification is required; the installation position can be adjusted directly through the slot alignment, resulting in greater construction adaptability.

[0045] In a preferred embodiment, a connecting block 17 is fixedly connected to the lower end of the adjusting support bracket 15, and the connecting block 17 is locked and fixed to the roof fixing base 18 by bolts.

[0046] The connecting block 17 connects the adjustable support bracket 15 to the roof fixed base 18, smoothly transferring the weight of the upper component to the roof fixed base 18. The connecting block 17 is connected to the roof fixed base 18 by bolts, allowing for disassembly, transportation, and storage of components. The angle of the support bracket 15 can be slightly rotated on-site to adapt to the roof slope angle, ensuring smooth force transmission and preventing the adjustable support bracket 15 from directly contacting the base and causing misalignment, resulting in better installation adaptability.

[0047] In a preferred embodiment, a slotted nut B20 is slidably engaged in the bottom groove of the second load-bearing crossbeam 3. A transition plate is provided below the second load-bearing crossbeam 3. The transition plate has an adjusting long slot C21 and a fixing hole 22. The screw of the slotted nut B20 passes downward into the adjusting long slot C21 and is locked by the nut. A bolt post 24 passes through the fixing hole 22. A rotating end 25 is provided at the upper end of the bolt post 24. A stop block 26 is fixedly provided on the rod of the bolt post 24. A self-tapping screw 27 is coaxially connected to the lower end of the bolt post 24. Two fixing nuts B23 are also threadedly connected to the bolt post 24. The fixing nuts B23 fix the transition plate to the bolt post 24.

[0048] The slotted nut B20 can slide at the bottom of the second load-bearing crossbeam 3, and its alignment position can be adjusted in conjunction with the adjusting slot C21 of the adapter plate. The adapter plate is fitted onto the outside of the bolt post 24 through the fixing hole 22. Rotating the upper rotating end 25 of the bolt post 24 will drive the lower self-tapping screw 27 to drill into the roof for fixation. The stop block 26 on the outside of the bolt post 24 limits the assembly position, and the upper and lower fixing nuts B23 clamp and fix the adapter plate, controlling the installation height of the adapter plate. The second load-bearing crossbeam 3 can be adjusted and leveled independently without interfering with the adjustment of the first load-bearing crossbeam 2. The double nut limit can reduce thread loosening caused by roof vibration and improve the fixing stability.

[0049] In a preferred embodiment, a stop 26 is fixedly provided on the shank of the self-tapping screw 27 that passes through the mounting hole 19. The stop 26 is positioned above the mounting hole 19, and the outer diameter of the stop 26 is larger than the diameter of the mounting hole 19.

[0050] The stop block 26 on the outside of the self-tapping screw 27 is larger than the diameter of the fixing hole 19. The stop block 26 stays above the fixing hole 19, fits and presses against the top surface of the roof fixing base 18, limits the drilling depth of the self-tapping screw 27 into the roof, prevents the screw from pressing down and damaging the roof fixing base 18, and at the same time shares the pressure of the upper components, protects the hole edge structure of the fixing hole 19, distinguishes between the two screw installation methods, adapts to the differentiated construction of the first row and the back row, and firmly presses the roof fixing base 18.

[0051] A rooftop distributed photovoltaic panel installation structure and its construction method are provided, with the specific construction steps as follows:

[0052] S1. Align the pre-marked installation point on the roof with the tool and rotate the rotating end 25 clockwise to drive the integrated bolt post 24 to rotate synchronously. This will allow the self-tapping screw 27 at the bottom of the bolt post 24 to rotate into the interior of the roof at a uniform speed to achieve fixation. Keep the bolt post 24 vertically perpendicular to the roof surface. Then, screw the fixing nut B23 on the lower side clockwise into the bolt post 24 and adjust it to the preset installation height that is suitable for the adapter plate.

[0053] S2. Insert the slot nut B20 into the bottom groove from the end of the second load-bearing crossbeam 3. The slot nut B20 can slide freely along the groove. Insert the screw of the slot nut B20 vertically into the adjustment slot C21 of the adapter plate. Tighten the matching nut of the slot nut B20 to temporarily splice and fix the slot nut B20 and the adapter plate. Align the fixing hole 22 on the side of the adapter plate with the outside of the bolt column 24 and place it stably on the top support position of the lower fixing nut B23. Then screw the upper fixing nut B23 clockwise into the bolt column 24. Use the upper and lower fixing nuts B23 to clamp and limit the adapter plate, lock the horizontal and vertical positions of the adapter plate, and the overall erection and installation of the second load-bearing crossbeam 3 can be completed.

[0054] S3. Place the roof fixing base 18 stably against the corresponding point on the roof. Use the connecting bolt to pass through the hole of the connecting block 17 and the roof fixing base 18 and lock it in place to complete the bottom assembly of the adjustment support bracket 15. Move and adjust the position of the bracket adjustment arm 13 to align the bracket adjustment arm 13 and the adjustment support bracket 15 so that the adjustment slot A14 and the adjustment slot B16 are aligned. Insert the connecting bolt and slightly pre-tighten it to leave room for subsequent fine adjustment. Insert the fixing nut A10 into the sliding groove 9 from the end of the first load-bearing crossbeam 2. Set the first load-bearing crossbeam 2 stably above the bracket adjustment arm 13. Let the screw of the fixing nut A10 be inserted vertically into the adjustment slot A14. Place the anti-slip pads 11 along the screw shaft in sequence, and then screw in the locking nut 12 for temporary locking and fixing to complete the erection of the first load-bearing crossbeam 2.

[0055] S4. Insert the connecting slider 5 into the inner groove 4 of the top beam of the first load-bearing crossbeam 2 and the second load-bearing crossbeam 3 from the end. The connecting slider 5 can slide and move laterally along the groove. Place the photovoltaic panel body 1 flat on the top surface of the two load-bearing crossbeams. Move it left and right to finely adjust the spacing and flatness of the photovoltaic panel body 1. After the position is adapted, put the photovoltaic panel side pressure code 7 and the photovoltaic panel middle pressure code 8 on the upper end of the fixing bolt A6 and lock them, so that the two types of photovoltaic panel pressure codes fit together and press the edge of the photovoltaic panel body 1, limiting the horizontal displacement of the photovoltaic panel body 1.

[0056] S5. When arranging the subsequent row of photovoltaic support structures, first place the roof fixing base 18 stably on the corresponding construction point on the roof, so that the fixing installation hole 19 opened on the base is accurately aligned with the roof point. Then, pass the self-tapping screw 27 with the stop block 26 from top to bottom through the fixing installation hole 19 until the stop block 26 fits against the top surface of the roof fixing base 18. Then, turn the self-tapping screw 27 into the roof to complete the fixing. The complete process of bracket assembly, beam erection and photovoltaic panel body 1 installation is directly reused to complete the installation of multiple rows of photovoltaic structures on the roof in sequence.

[0057] S6. Relying on the inner sliding groove 4 of the crossbeam, the lower sliding groove 9, the adjusting long slot hole A14, the adjusting long slot hole B16, and the adjusting long slot hole C21, slightly move and adjust the relative positions of all components, unify and straighten the arrangement angle and panel height of the photovoltaic panel body 1, and after confirming that the overall arrangement is neat and uniform, tighten all bolts and nuts on site in sequence to lock the position of all components and complete the construction of the overall photovoltaic structure.

[0058] The foregoing description, with reference to preferred embodiments, illustrates an exemplary implementation of a rooftop distributed photovoltaic panel installation structure and its construction method provided by this disclosure. However, those skilled in the art will understand that various modifications and alterations can be made to the above specific embodiments without departing from the spirit of this disclosure, and various combinations can be made to the various technical features and structures proposed in this disclosure without exceeding the protection scope of this disclosure, the protection scope of which is determined by the appended claims.

Claims

1. A rooftop distributed photovoltaic panel installation structure and its construction method, comprising a photovoltaic panel body (1), a first load-bearing crossbeam (2) and a second load-bearing crossbeam (3) arranged in parallel, characterized in that: The photovoltaic panel body (1) is placed on the top surface of the first load-bearing crossbeam (2) and the second load-bearing crossbeam (3). The first load-bearing crossbeam (2) has an inner groove (4) on its upper part. A connecting slider (5) is slidably installed in the inner groove (4). A fixing bolt A (6) is fixedly installed on the top of the connecting slider (5). The fixing bolt A (6) extends upward out of the first load-bearing crossbeam (2) and is connected to a photovoltaic panel pressing code. The photovoltaic panel pressing code is pressed against the edge of the photovoltaic panel body (1). The lower part of the first load-bearing crossbeam (2) is provided with a sliding groove (9), and a fixing nut A (10) is slidably locked in the sliding groove (9). A bracket adjustment arm (13) is provided below the first load-bearing crossbeam (2). An adjustment slot A (14) is provided on the bracket adjustment arm (13). The screw of the fixing nut A (10) passes downward through the adjustment slot A (14). An anti-slip pad (11) and a locking nut (12) are sequentially fitted on the screw of the fixing nut A (10). The locking nut (12) cooperates with the fixing nut A (10) to lock the bracket adjustment arm (13) to the bottom of the first load-bearing crossbeam (2). An adjustment support bracket (15) is provided on one side of the bracket adjustment arm (13). An adjustment long slot hole B (16) is provided on the adjustment support bracket (15). The adjustment long slot hole A (14) and the adjustment long slot hole B (16) are positioned corresponding to each other and are locked and fixed by bolts. The lower end of the adjustable support bracket (15) is connected to a roof fixing base (18), and a fixing installation hole (19) is provided on the roof fixing base (18), and a self-tapping screw (27) is inserted in the fixing installation hole (19).

2. The rooftop distributed photovoltaic panel installation structure and its construction method according to claim 1, characterized in that: The photovoltaic panel pressing code includes a photovoltaic panel side pressing code (7) and a photovoltaic panel center pressing code (8). The photovoltaic panel side pressing code (7) is pressed onto the side edge of a single photovoltaic panel body (1), and the photovoltaic panel center pressing code (8) is pressed onto the mating edge of two adjacent photovoltaic panel bodies (1).

3. The rooftop distributed photovoltaic panel installation structure and its construction method according to claim 1, characterized in that: The bracket adjustment arm (13) has an L-shaped bent structure. The horizontal and vertical sections of the bracket adjustment arm (13) each have an adjustment slot A (14), and the adjustment slot A (14) of the vertical section extends in the vertical direction.

4. The rooftop distributed photovoltaic panel installation structure and its construction method according to claim 1, characterized in that: The lower end of the adjustable support bracket (15) is fixedly connected to a connecting block (17), and the connecting block (17) is locked and fixed to the roof fixing base (18) by bolts.

5. The rooftop distributed photovoltaic panel installation structure and its construction method according to claim 1, characterized in that: The bottom groove of the second load-bearing crossbeam (3) is fitted with a slotted nut B (20). A transition plate is provided below the second load-bearing crossbeam (3). The transition plate is provided with an adjustment slot C (21) and a fixing hole (22). The screw of the slotted nut B (20) passes downward into the adjustment slot C (21) and is locked by the nut. A bolt post (24) passes through the fixing hole (22). The upper end of the bolt post (24) is provided with a rotating end (25). A stop block (26) is fixedly provided on the rod of the bolt post (24). A self-tapping screw (27) is coaxially connected to the lower end of the bolt post (24). Two fixing nuts B (23) are also threaded on the bolt post (24). The fixing nuts B (23) fix the transition plate on the bolt post (24).

6. The rooftop distributed photovoltaic panel installation structure and its construction method according to claim 1, characterized in that: A stop (26) is fixedly provided on the shank of the self-tapping screw (27) that passes through the fixed mounting hole (19). The stop (26) is positioned above the fixed mounting hole (19), and the outer diameter of the stop (26) is larger than the diameter of the fixed mounting hole (19).

7. A construction method for a rooftop distributed photovoltaic panel installation structure according to any one of claims 1 to 6, characterized in that, Includes the following steps: S1. At the preset installation point on the roof, rotate the rotating end (25) to drive the self-tapping screw (27) at the lower end of the bolt column (24) into the roof to complete the fixation, so that the bolt column (24) stands vertically on the roof surface; screw the fixing nut B (23) located below into the bolt column (24) to the preset height position. S2. Insert the slot nut B (20) into the bottom groove of the second load-bearing crossbeam (3), so that the slot nut B (20) passes through the adjustment slot hole C (21) on the adapter plate, and tighten the nut to complete the pre-fixation of the slot nut B (20) and the adapter plate; put the fixing hole (22) of the adapter plate into the bolt post (24) and place it on the fixing nut B (23) below, and then screw the fixing nut B (23) above into the bolt post (24). The adapter plate is fixed by clamping the upper and lower fixing nuts B (23) to complete the erection of the second load-bearing crossbeam (3); S3. Fix the roof fixing base (18) to the corresponding installation point on the roof. Lock the connecting block (17) at the lower end of the adjusting support bracket (15) to the roof fixing base (18) with bolts. Align the bracket adjusting arm (13) with the adjusting support bracket (15) so that the adjusting long slot A (14) and the adjusting long slot B (16) are in the same position. Insert the bolt and pre-tighten. Insert the fixing nut A (10) into the sliding slot (9) of the first load-bearing crossbeam (2). Set the first load-bearing crossbeam (2) above the bracket adjusting arm (13). Insert the screw of the fixing nut A (10) into the adjusting long slot A (14). Put the anti-slip pad (11) and the locking nut (12) in sequence and pre-tighten to complete the setting of the first load-bearing crossbeam (2). S4. Insert the connecting slider (5) into the inner groove (4) of the upper part of the first load-bearing crossbeam (2) and the second load-bearing crossbeam (3), lay the photovoltaic panel body (1) flat on the top surface of the first load-bearing crossbeam (2) and the second load-bearing crossbeam (3), adjust the position of the photovoltaic panel body (1), put the photovoltaic panel pressing code into the fixing bolt A (6) and lock it, so that the photovoltaic panel pressing code presses and fixes the edge of the photovoltaic panel body (1); S5. When installing the next row of support structures, first place the roof fixing base (18) at the corresponding point on the roof, so that the fixing installation hole (19) is aligned with the installation point. Then, screw the self-tapping screw (27) through the fixing installation hole (19) from top to bottom into the roof to complete the fixing. Repeat the above installation steps of bracket, beam and photovoltaic panel body (1) to complete the laying of multiple rows of structures. S6. Adjust the relative positions of each component along each long slot, correct the installation accuracy of the photovoltaic panel body (1), and then tighten all bolts and nuts to complete the overall construction.

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