Offshore photovoltaic support and offshore photovoltaic structure

Abstract

The utility model discloses an offshore photovoltaic support and an offshore photovoltaic structure, the offshore photovoltaic support comprises a plurality of connecting cylinders and a connecting piece, the connecting piece comprises angle steel lapped between two adjacent connecting cylinders and at least one screw connected between the angle steel and the connecting cylinders, and each screw comprises a rivet nut and a screw rod; the large end of the rivet nut abuts against the outer wall of the angle steel, and the small end of the rivet nut penetrates into the connecting cylinder to form a limiting part abutting against the inner wall of the connecting cylinder. The screw rod is connected into the rivet nut, the large end of the screw rod abuts against the large end of the rivet nut, and the small end of the screw rod is in threaded connection with the connecting cylinder; compared with the prior art, the riveting nut is matched with the limiting part through the large head end of the riveting nut to limit and fix the angle steel and the corresponding connecting cylinder for the first time, and then the screw rod is used for limiting and fixing the angle steel and the corresponding connecting cylinder for the second time, so that the phenomenon of stress concentration generated after screw connection is avoided; and the stability and the overall performance after connection are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaics, and in particular to an offshore photovoltaic bracket and an offshore photovoltaic structure. Background Art

[0002] Photovoltaic is the abbreviation of solar photovoltaic power generation system, which is a new power generation system that uses the photovoltaic effect of solar cell semiconductor materials to convert solar radiation energy into electrical energy. With the development of society, solar energy as a new type of clean energy has gradually attracted people's attention and achieved remarkable development results.

[0003] Compared with ground photovoltaic power stations, water-based power stations avoid land restrictions and also play a certain protective role in the ecological environment of water, such as reducing water evaporation and inhibiting the reproduction of algae. In addition, they can be combined with aquaculture to truly realize the comprehensive utilization of resources. Among them, floating power stations on the water surface are the most important application form of water-based power stations, and they were developed earlier abroad. There are two modes of water-based photovoltaic brackets: pile foundation fixation and water surface floating. However, offshore photovoltaic brackets can only be floating. Basically, they use floating tubes or buoys combined with steel structure bases and brackets to fix and float photovoltaic modules on the water surface.

[0004] In the existing bracket, two adjacent connecting tubes are connected by angle steel and self-tapping dovetail screws. However, the self-tapping dovetail screws are only locked by threads, which easily causes stress concentration and causes the self-tapping dovetail screws to break, thereby affecting the stability and overall performance of the connection. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of the present utility model is to provide an offshore photovoltaic bracket and an offshore photovoltaic structure to solve the problem in the prior art that two adjacent connecting tubes in the bracket are connected by angle steel and self-tapping dovetail screws. Since the self-tapping dovetail screws are only locked by threads, stress concentration is easily generated, resulting in breakage of the self-tapping dovetail screws, thereby affecting the stability of the connection and the overall performance.

[0006] To achieve the above-mentioned purpose, the first aspect of the utility model adopts the following technical solution: an offshore photovoltaic bracket, comprising a plurality of connecting tubes and connecting members connected between two adjacent connecting tubes, wherein the connecting members include angle steel overlapped between two adjacent connecting tubes and at least one screw connected between the angle steel and the connecting tube, each of the screws includes:

[0007] A pull rivet nut, wherein the large end of the pull rivet nut abuts against the outer wall of the angle steel and the small end of the pull rivet nut is inserted into the connecting tube to form a limiting portion that abuts against the inner wall of the connecting tube;

[0008] The screw rod is connected in the rivet nut and its big head end abuts against the big head end of the rivet nut, and its small head end is connected with the connecting tube thread.

[0009] The second aspect of the present invention adopts the following technical solution: an offshore photovoltaic structure, including a floating plate and a photovoltaic panel assembly, and also includes an offshore photovoltaic bracket connected between the floating plate and the photovoltaic panel assembly as described in the first aspect of the present invention.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] In the offshore photovoltaic bracket, the screws formed by the rivet nut and the screw rod are used to connect the angle steel and the corresponding connecting tube. The rivet nut cooperates with the large head end and the limiting part to first perform a limited fixation between the angle steel and the corresponding connecting tube, and then the screw rod is used to perform a secondary limited fixation between the angle steel and the corresponding connecting tube, thereby avoiding the stress concentration after the screw connection and improving the stability and overall performance after the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a structural schematic diagram of an offshore photovoltaic structure in one embodiment of the utility model;

[0013] Figure 2 for Figure 1 Schematic diagram of the local structure;

[0014] Figure 3 for Figure 1 Schematic diagram of the structure of the connecting parts;

[0015] Figure 4 for Figure 3 Schematic diagram of the structure after the rivet nut is installed;

[0016] Figure 5 for Figure 1 A partial enlarged view of the middle A part;

[0017] Figure 6 for Figure 1 A partial enlarged view of part B in the middle;

[0018] Figure 7 for Figure 5 Schematic diagram of the structure of the middle pressing part Figure 1 ;

[0019] Figure 8 for Figure 6 Schematic diagram of the structure of the middle pressing part Figure 2 ;

[0020] Fig. 9 It is a schematic diagram of the connection between the buoyancy ball and the floating plate in one embodiment of the utility model.

[0021] The figure marks in the drawings of the specification include: connecting tube 1, connecting part 2, angle steel 21, screw 22, rivet nut 221, limiting part 2211, screw 222, square bottom frame 3, first top support column 4, column 5, second top support column 6, fastener 7, pressing part 71, pressing section 711, connecting section 712, connecting neck 713, locking part 72, buoyancy ball 8, winding structure 9, mounting plate 91, mounting column 92, winding shaft 93, traction rope 94, floating plate 10, photovoltaic panel assembly 11. DETAILED DESCRIPTION

[0022] The utility model is further described in detail below through specific implementation methods:

[0023] like Figure 1 , Figure 3 as well as Figure 4 As shown, an embodiment of the utility model proposes an offshore photovoltaic bracket, including a plurality of connecting tubes 1 and a connecting member 2 connected between two adjacent connecting tubes 1, wherein the connecting member 2 includes an angle steel 21 overlapped between two adjacent connecting tubes 1 and at least one screw 22 connected between the angle steel 21 and the connecting tube 1, and each of the screws 22 includes a rivet nut 221 and a screw rod 222; wherein, the large head end of the rivet nut 221 abuts against the outer wall of the angle steel 21 and the small head end thereof is inserted into the connecting tube 1 to form a limiting portion 2211 abutting against the inner wall of the connecting tube 1; the screw rod 222 is connected to the rivet nut 221 and its large head end abuts against the large head end of the rivet nut 221, and its small head end is threadedly connected to the connecting tube 1.

[0024] Here, the specific operation of the screw 22 during connection is:

[0025] After the small end of the rivet nut 221 is passed through the angle steel 21, it is inserted into the connecting tube 1, and the large end of the rivet nut 221 is against the angle steel 21; the rivet gun then squeezes the small end of the rivet nut 221 to deform it, thereby forming a limiting portion 2211 on the small end of the rivet nut that is against the inner wall of the connecting tube 1, so that the connection between the angle steel 21 and the connecting tube 1 is limited and fixed by the cooperation between the large end of the rivet nut 221 and the limiting portion 2211; the screw rod 222 is passed through the rivet nut 221 until the large end of the screw rod 222 is against the large end of the rivet nut 221 and the small end thereof is threadedly connected to the connecting tube 1, so as to further limit and fix the angle steel 21 and the connecting tube 1; wherein, the screw rod 222 and the rivet nut 221 can also be threadedly connected to improve the connection stability.

[0026] In this embodiment, the number of screws 22 connecting the angle steel 21 and a connecting tube 1 is 4, which can be adjusted according to actual needs.

[0027] like Figure 1 and Figure 2 As shown, according to another embodiment of the utility model, an offshore photovoltaic bracket, wherein the plurality of connecting tubes 1 are arranged to form a square frame structure and the height of one side of the top of the square frame structure gradually increases toward the other side, so that the top of the square frame structure is arranged tilted, and an inclined photovoltaic panel assembly 11 can be installed on the top of the square frame structure, which is beneficial to increase the area of ​​the photovoltaic panel assembly 11 and to quickly drain rainwater from the top of the photovoltaic panel assembly 11.

[0028] Specifically, the square frame structure includes a square bottom frame 3, a plurality of first top support columns 4 arranged in parallel and at intervals above the square bottom frame 3, and a plurality of vertical columns 5 connected between each first top support column 4 and the square bottom frame 3. The plurality of first top support columns 4 are connected by a plurality of second top support columns 6, and the plurality of second top support columns 6 are located on the upper surfaces of the plurality of first top support columns 4. The square bottom frame 3 is mainly composed of a plurality of connecting columns connected end to end in sequence, and the plurality of first top support columns 4 are arranged obliquely in the same direction; the connecting columns, the first top support columns 4, the second top support columns 6 and the vertical columns 5 mentioned above are all the connecting tubes 1 mentioned above, and the connecting tube 1 is a square reset tube.

[0029] like Figure 1 , Figure 5 and Figure 6 As shown, according to another embodiment of the utility model, the offshore photovoltaic structure includes a floating plate 10, a photovoltaic panel assembly 11, and an offshore photovoltaic bracket connected between the floating plate 10 and the photovoltaic panel assembly 11 as described in any of the above embodiments, so that the offshore photovoltaic structure has an offshore photovoltaic bracket with strong connection stability and better overall performance.

[0030] Based on the above scheme:

[0031] The photovoltaic panel assembly 11 is assembled from a plurality of photovoltaic panels, and a plurality of fasteners 7 connected to the corresponding connecting tube 1 in the offshore photovoltaic bracket are arranged circumferentially on the outer side of each photovoltaic panel. The plurality of photovoltaic panels are arranged in an array to make the photovoltaic panel assembly 11 square. Each photovoltaic panel is stably connected by a plurality of fasteners 7.

[0032] Each of the fasteners 7 includes a pressing portion 71 and a locking portion 72 , wherein the pressing portion 71 is partially pressed on the top edge of the photovoltaic panel, and the locking portion 72 is fixedly connected between the pressing portion 71 and the corresponding connecting tube 1 .

[0033] After the photovoltaic panel is assembled on the top of the square frame structure, multiple fasteners 7 are used to fix the photovoltaic panel. Each fastener 7 first presses the top edge of the photovoltaic panel through the pressing part 71 and then fixes the pressing part 71 and the corresponding connecting tube 1 through the locking part 72 to quickly complete the fixation of the photovoltaic panel.

[0034] Specifically, one end of the pressing portion 71 is pressed on the top edge of the photovoltaic panel and the other end thereof is bent multiple times to form a connecting section 712 arranged parallel to a side wall of the corresponding connecting tube 1, and the locking portion 72 is fixedly connected between the connecting section 712 and the corresponding connecting tube 1. The structural design of the pressing portion 71 is to be able to stably press and fix the photovoltaic panel, and can also cooperate with the locking portion 72 to connect with the corresponding connecting tube 1.

[0035] In this embodiment:

[0036] The pressing portion 71 has two structures. The first structure is to press and fix the edge of the photovoltaic panel assembly 11 , and the second structure is to press and fix two adjacent photovoltaic panels in the photovoltaic panel assembly 11 at the same time.

[0037] The first structure of the pressing portion 71 (such as Figure 7 ) is bent twice and includes a pressing section 711, a connecting section 712 and a connecting neck 713, wherein the connecting neck 713 is connected between the pressing section 711 and the connecting section 712, and the pressing section 711 and the connecting section 712 are located on different sides of the connecting neck 713. When in use, the pressing section 711 is pressed on the top edge of the photovoltaic panel, and the connecting section 712 is connected to the corresponding connecting tube 1 through the locking portion 72.

[0038] The pressing portion 71 of the second structure (such as Figure 8 ) is actually formed by the cooperation of two pressing parts 71 of the first structure, which are composed of two pressing sections 711, a connecting section 712 and two connecting necks 713. The two connecting necks 713 are arranged at both ends of the connecting section 712 along the same side of the connecting section 712. The two pressing sections 711 are connected to one end of the two connecting necks 713 away from the connecting section 712. The two pressing sections 711 extend in a square shape along the outer sides of the two connecting necks 713. When in use, the two pressing sections 711 are pressed one by one on the top edges of the two photovoltaic panels, and the connecting section 712 is connected to the corresponding connecting tube 1 through the locking portion 72.

[0039] The locking portion 72 mentioned above is specifically composed of a connecting screw 222 and a connecting nut. The small end of the connecting screw 222 passes through the connecting section 712 and then passes through the corresponding connecting tube 1 and is threadedly connected to the connecting nut. The large end of the connecting screw 222 abuts against the connecting section 712 to lock and fix.

[0040] To further improve stability at sea, Fig. 9 As shown, according to another embodiment of the utility model, in the offshore photovoltaic structure, a plurality of buoyancy balls 8 are arranged circumferentially on the outer side of the floating plate 10, and each buoyancy ball 8 is connected to the floating plate 10 via a winding structure 9.

[0041] Among them, the winding structure 9 includes a mounting plate 91 riveted on the floating plate 10, and two spaced mounting columns 92 are connected to the mounting plate 91. Positioning mounting notches are opened on the opposite sides of the two mounting columns 92 away from the mounting plate 91. A winding shaft 93 is key-connected between the two positioning mounting notches. A traction rope 94 is arranged on the winding shaft 93. One end of the traction rope 94 passes through a limiting hole opened on the mounting plate 91 and is connected to the buoyancy ball 8.

[0042] After the reel 93 is taken out from between the two positioning installation notches, the reel 93 can be rotated to retract and release the traction rope 94, so that the length of the unfolded section of the traction rope 94 can be adjusted according to the needs to adjust the floating distance of the buoyancy ball 8. After the reel 93 is keyed between the two positioning installation notches, one end of the traction rope 94 passes through the limit hole and is connected to the buoyancy ball 8. During the floating process, the buoyancy ball 8 will not generate a force on the reel 93 away from the positioning installation notch, and the reel 93 is not easy to fall off from between the two positioning installation notches. In order to further ensure the installation stability of the reel 93, the reel 93 can be fixed to the installation column 92 by bolts.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. An offshore photovoltaic support, comprising a plurality of connecting tubes and a connecting piece connected between two adjacent connecting tubes, wherein the connecting piece comprises an angle steel overlapped between two adjacent connecting tubes and at least one screw connected between the angle steel and the connecting tube, characterized in that: Each of the screws comprises: A pull rivet nut, wherein the large end of the pull rivet nut abuts against the outer wall of the angle steel and the small end of the pull rivet nut is inserted into the connecting tube to form a limiting portion that abuts against the inner wall of the connecting tube; The screw rod is connected in the rivet nut and its big head end abuts against the big head end of the rivet nut, and its small head end is connected with the connecting tube thread.

2. An offshore photovoltaic support according to claim 1, characterized in that: A plurality of the connecting tubes are arranged to form a square frame structure, and the height of one side of the top of the square frame structure gradually increases toward the other side.

3. An offshore photovoltaic structure, comprising a floating plate and a photovoltaic panel assembly, characterized in that: It also includes an offshore photovoltaic support as described in claim 1 or 2 connected between the floating plate and the photovoltaic panel assembly.

4. An offshore photovoltaic structure according to claim 3, characterized in that: The photovoltaic panel assembly is assembled from a number of photovoltaic panels, and a plurality of fasteners connected to corresponding connecting tubes in the offshore photovoltaic bracket are arranged circumferentially on the outer side of each photovoltaic panel.

5. An offshore photovoltaic structure according to claim 4, characterized in that: Each of the fasteners comprises: A pressing portion, wherein the pressing portion is partially pressed on the top edge of the photovoltaic panel; A locking portion is fixedly connected between the pressing portion and the corresponding connecting cylinder.

6. An offshore photovoltaic structure according to claim 5, characterized in that: One end of the pressing part is pressed on the top edge of the photovoltaic panel and the other end thereof is bent multiple times to form a connecting section arranged parallel to a side wall of the corresponding connecting cylinder, and the locking part is fixedly connected between the connecting section and the corresponding connecting cylinder.

7. An offshore photovoltaic structure according to claim 3, characterized in that: A plurality of buoyancy balls are arranged circumferentially on the outer side of the floating plate, and each buoyancy ball is connected to the floating plate via a winding structure.

8. An offshore photovoltaic structure according to claim 7, characterized in that: The winding structure includes a mounting plate riveted on a floating plate, two mounting columns arranged at intervals are connected to the mounting plate, positioning mounting notches are provided on the opposite sides of the ends of the two mounting columns away from the mounting plate, a winding shaft is keyed between the two positioning mounting notches, a traction rope is arranged on the winding shaft, and one end of the traction rope is connected to the buoyancy ball after passing through a limiting hole provided on the mounting plate.

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