A quick-assembly and disassembly BIPV system

Abstract

The present invention discloses a BIPV system for quick disassembly and assembly, including a metal roof and a plurality of spliced ​​photovoltaic panels arranged on the metal roof, the metal roof having slot crests arranged at intervals, a bearing crest being arranged between adjacent slot crests, slots being arranged on both sides of the slot crests, a plurality of rotatable rotating connectors being arranged at intervals in the slots along their length direction, a side end of the photovoltaic panel being fixed on the slot crest by a rotating connector, the ends of the spliced ​​sides of adjacent photovoltaic panels being placed on the bearing crests, and adjacent photovoltaic panels being connected by a plurality of fasteners arranged at intervals along the splicing gap of the photovoltaic panels; the fasteners comprising a first connecting part and a second connecting part respectively connected to the side ends of adjacent photovoltaic panels and hingedly arranged, the first connecting part and the second connecting part of the fasteners pushing the photovoltaic panels on both sides in an extended state, so that the rotating connectors are close to the slot crests, and the fastening of the photovoltaic panels is realized. The present invention is more convenient and efficient in disassembly and assembly, and the system components are more firmly assembled.

Description

Technical Field

[0001] The present invention relates to the technical field of BIPV, and in particular to a quick-disassembly and assembly BIPV system. Background Art

[0002] Building integrated photovoltaic system (BIPV) is an application form of distributed photovoltaic power generation system. It realizes the organic combination of photovoltaic modules and buildings, combines power generation function and building material properties, and provides solutions to a series of problems existing in traditional building attached photovoltaic system (BAPV). From the perspective of the domestic market, industrial plants, commercial buildings, public buildings, roofs and facades have large installation areas. With the continuous decline in the cost of crystalline silicon modules and the continuous improvement in efficiency, it has begun to become economical and has become the most promising and feasible application scenario for BIPV.

[0003] As a key part of the BIPV system, BIPV module fasteners also face many technical problems that need to be solved. The patent specification with publication number CN111706583A discloses a photovoltaic module fastener, including a support, two V-shaped clamps, a support block and a bolt; the support includes a flat plate and vertical plates respectively arranged on both sides of the bottom of the flat plate, the two ends of the flat plate extend outward, and the bottom surface of the outwardly extending end of the flat plate is used to contact the upper surface of the photovoltaic module; the two V-shaped clamps are respectively placed horizontally on the inner sides of the two vertical plates and hinged with the vertical plates, the openings of the V-shaped clamps are arranged opposite to each other, and the two sides of the support block are respectively in contact with the upper inclined plates of the two horizontally placed V-shaped clamps; the bolts are threadedly connected to the flat plate and the support block in turn, and the bolts are used to control the upward movement of the support block, thereby driving the V-shaped clamp to rotate so as to clamp on the side of the corrugated sheet.

[0004] The patent specification with announcement number CN215990638U discloses a BIPV photovoltaic device, including a BIPV component, a keel and a connecting piece; wherein the BIPV component is connected to the keel through the connecting piece; the keel has a first connecting portion, and the connecting piece has a second connecting portion that matches the first connecting portion; the first connecting portion is set as a first threaded hole, and the second connecting portion is set as a second threaded hole, and the connecting piece also includes a fixing screw for connecting the first threaded hole and the second threaded hole; the connecting piece includes a base plate and a supporting portion, the second threaded hole is opened on the base plate, and the supporting portion is protruding from the base plate.

[0005] The above two solutions both have the problem of complex structure and inconvenient assembly and disassembly, which makes it inconvenient to maintain, replace, recycle and reuse the photovoltaic components. Summary of the invention

[0006] The purpose of the present invention is to provide a BIPV system that can be quickly disassembled and assembled, which is more convenient and efficient, and the system components can be assembled more firmly.

[0007] A quick-disassembly BIPV system, comprising a metal roof and a plurality of spliced ​​photovoltaic panels arranged on the metal roof, wherein the metal roof has slot crests arranged at intervals, a bearing crest is arranged between adjacent slot crests, slots are arranged on both sides of the slot crests, a plurality of rotatable rotating connectors are arranged at intervals in the slots along their length direction, one side end of the photovoltaic panel is fixed to the slot crest through the rotating connector, the ends of adjacent photovoltaic panels on the spliced ​​sides are placed on the bearing crest, and the adjacent photovoltaic panels are connected by a plurality of fasteners arranged at intervals along the splicing gaps of the photovoltaic panels;

[0008] The fastener includes a first connection part and a second connection part which are respectively connected to the side ends of adjacent photovoltaic panels and are hingedly arranged. The first connection part and the second connection part of the fastener push the photovoltaic panels on both sides in an extended state, so that the rotating connection part is close to the wave crest of the slot, thereby achieving the fastening of the photovoltaic panels.

[0009] In this solution, by using fasteners to push the photovoltaic panels on both sides, the photovoltaic panels on both sides are pressed between the slot crest and the load-bearing crest to achieve fastening, which is more convenient in operation and makes system disassembly and assembly faster.

[0010] Preferably, the rotating connector has a rotating portion that can be embedded in the slot and a fixed portion connected to the side end of the photovoltaic panel.

[0011] Preferably, the fastener further comprises an upper limiting plate arranged at a hinged position between the first connecting portion and the second connecting portion to prevent the first connecting portion and the second connecting portion from folding in the opposite direction after being in an extended state.

[0012] Preferably, the first connecting part and the second connecting part are both provided with grooves along the direction of the splicing gap, and the load-bearing crest is provided with a convex groove which cooperates with the groove when the first connecting part and the second connecting part are in an extended state.

[0013] Preferably, the side ends of the first connection part and the second connection part for connecting the photovoltaic panel are both rotatably provided with a rotating drum, and the side ends of the photovoltaic panel are provided with a sliding groove for the rotating drum to slide into.

[0014] Further preferably, the fastener also includes a lower limiting plate arranged at a hinge position between the first connecting portion and the second connecting portion to prevent the first connecting portion and the second connecting portion from returning to an original folded state after being in an extended state.

[0015] Preferably, the fastener comprises two sets of hinged first connecting parts and second connecting parts, and the fastener further comprises a driving mechanism capable of driving the two sets of first connecting parts and second connecting parts to stretch and fold synchronously.

[0016] Further preferably, the first connecting portion and the second connecting portion are hinged via a rotating shaft, and the driving mechanism comprises sleeves respectively arranged on the two rotating shafts and a fastening screw passing through the two sleeves and threadably matched with the sleeves.

[0017] Further preferably, the ends of the two first connection parts facing away from the second connection part, and the ends of the two second connection parts facing away from the first connection part are respectively hinged on the fastening frame, and the fastener is connected to the side ends of the adjacent photovoltaic panels through the fastening frame.

[0018] Beneficial effects of the present invention:

[0019] The system of the present invention has building safety attributes such as wind pressure resistance, pit earthquake resistance, watertightness, waterproofness, airtightness, sound insulation, thermal insulation and sunshade performance, and is also characterized by rapid disassembly, which facilitates the maintenance, replacement, recycling and reuse of photovoltaic modules. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the structure of the fastener in Example 1;

[0021] Figure 2 This is a cross-sectional schematic diagram of installation step 1 of Example 1;

[0022] Figure 3 It is a cross-sectional schematic diagram of the installation step 2 of Example 1;

[0023] Figure 4 It is a cross-sectional schematic diagram of the installation step three of Example 1;

[0024] Figure 5 This is a schematic diagram of the structure of the metal roof;

[0025] Figure 6 This is a schematic diagram of the structure of the installation step 1 of Example 1;

[0026] Figure 7 This is a schematic diagram of the structure of the second step of the installation of Example 1;

[0027] Figure 8 This is a schematic diagram of the structure of the installation step three of Example 1;

[0028] Fig. 9 It is a schematic diagram of the structure of the rotating connecting member in Example 1 and Example 2;

[0029] Fig.10 This is a schematic diagram of the structure of the fastener in the extended state in Example 2;

[0030] Fig.11 This is a schematic diagram of the structure of the fastener in the folded state in Example 2;

[0031] Fig.12 Schematic diagram of the structure of the lower limit plate in Example 2;

[0032] Fig.13 The photovoltaic frame with slots in Example 2;

[0033] Fig.14 The photovoltaic frame with a slide groove in Example 2;

[0034] Fig.15 This is a cross-sectional schematic diagram of installation step 1 of Example 2;

[0035] Fig.16 It is a cross-sectional schematic diagram of the second installation step of Example 2;

[0036] Fig.17 It is a cross-sectional schematic diagram of the installation step 3 of Example 2;

[0037] Fig.18 It is a cross-sectional schematic diagram of the installation step 4 of Example 2;

[0038] Fig.19 This is a schematic diagram of the structure of the completed installation of Example 2;

[0039] Fig. 20 is a schematic structural diagram of a fastener in Example 3;

[0040] Fig.21 is a structural diagram of the rotating connecting member in Example 3;

[0041] Fig. 22 This is a cross-sectional schematic diagram of installation step 1 of Example 3;

[0042] Fig.23 It is a cross-sectional schematic diagram of the second installation step of Example 3;

[0043] Fig.24 It is a cross-sectional schematic diagram of the installation step 3 of Example 3;

[0044] Fig.25 It is a cross-sectional schematic diagram of the fourth installation step of Example 3;

[0045] Fig.26 This is a schematic diagram of the structure of the completed installation of Example 3. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] Example 1

[0048] like Figure 4 , 5 As shown in Figure 8, a quick-disassembly and assembly BIPV system includes a metal roof 1, the metal roof 1 has slot crests 11 arranged at intervals, a bearing crest 12 is arranged between adjacent slot crests 11, and two photovoltaic panels 2 are arranged between adjacent slot crests 11; the opposite side ends of the two photovoltaic panels 2 are fixed to the corresponding slot crests 11 by a plurality of rotating connectors 3, the adjacent side ends are placed on the bearing crest 12, and the adjacent side ends of the two photovoltaic panels 2 are connected by a plurality of fasteners 4.

[0049] The two sides of the groove crest 11 are provided with grooves 111 along the length direction thereof, and the rotating connecting member 3 has a rotating portion 31 which can be embedded in the groove 111. In this embodiment, the cross-sections of the groove 111 and the rotating portion 31 are both circular. Fig. 9 As shown, it is convenient for the rotation of the rotating connector 3; the rotating connector 3 also has a fixing portion 32 connected to the side end of the photovoltaic panel 2. In this embodiment, the fixing portion 32 has a first plug block 321, and the side end of the photovoltaic panel 2 has a slot 21 for the first plug block 321 to extend into, and then the first plug block 321 is fixed in the slot 21 with bolts to complete the fixation; in addition, the fixing portion 32 also has a slope 322, and the slope 322 is consistent with the slope of the slot crest 11, which facilitates the rotating connector 3 to rest against the slot crest 11.

[0050] In this embodiment, Figure 1 As shown, the fastener 4 includes a first connection part 41 and a second connection part 42 which are hinged to each other, and the two are specifically hinged through a rotating shaft 43. The first connection part 41 and the second connection part 42 are both provided with a second plug block 411, and the corresponding side end of the photovoltaic panel 2 also has a slot 21 for the second plug block 411 to extend into, and the second plug block 411 is fixed in the slot 21 with the help of bolts to complete the fixation.

[0051] In this embodiment, the first connection part 41 and the second connection part 42 are both provided with grooves 412. Specifically, the first connection part 41 and the second connection part 42 are provided with notches 413 at positions corresponding to the grooves 412. The grooves 412 are located in the notches 413. Two parallel convex grooves 121 are provided on the bearing crest 12. When the first connection part 41 and the second connection part 42 are in the extended state, the two grooves 412 are correspondingly matched with the two convex grooves 121. At the same time, the bottom surfaces of the first connection part 41 and the second connection part 42 are fitted with the top surface of the bearing crest 12 to complete the support. Among them, the cross section of the convex groove 121 is in an "Ω" shape. When the groove 412 is matched with the convex groove 121, it is stuck on the head of the convex groove 121.

[0052] In this embodiment, the fastener 4 also includes an upper limiting plate 44. Specifically, a shaft sleeve (not shown in the figure) is arranged at the bottom of the upper limiting plate 44, and the rotating shaft 43 is arranged in the shaft sleeve. When the first connecting part 41 and the second connecting part 42 are in an extended state, the upper limiting plate 44 limits the first connecting part 41 and the second connecting part 42 to prevent the first connecting part 41 and the second connecting part 42 from folding in the opposite direction after being in an extended state.

[0053] The area between two adjacent slot peaks 11 is defined as a photovoltaic module module installation range. The installation steps (within an installation range) and the working principle of the BIPV system of this embodiment are described in detail below.

[0054] Step 1: Insert the rotating connector 3 into the slots 111 of the slot crests 11 at both ends, plug the side ends of the photovoltaic panel 2 into the rotating connector 3 and fix them with bolts, and place the other side end of the photovoltaic panel 2 on the bearing crest 12. At this time, the distance between the two photovoltaic panels 2 on the bearing crest 12 is defined as d1, the distance between the convex grooves 121 on the bearing crest 12 is defined as D1, the length of the fastener 4 when the first connection part 41 and the second connection part 42 are unfolded to an angle of 180° is defined as d2, and the distance between the grooves 412 in this state is defined as D2, and it is required that d2>d1, D2=D1, such as Figure 2 , 6 shown.

[0055] Step 2: With the center of the card slot 111 as the axis, rotate the two photovoltaic panels 2 upward along the opposite direction of the inclined surface of the card slot crest 11. At this time, insert the two ends of the fastener 4 in the folded state into the side ends of the two photovoltaic panels 2, such as Figure 3 , 7 shown.

[0056] Step 3: Press the fastener 4 downward. When the angle between the first connecting portion 41 and the second connecting portion 42 is close to 180°, insert the groove 412 on the fastener 4 into the convex groove 121 on the load-bearing crest 12. At this time, since D2=D1, the effect brought about is that the two sides of the fastener 4 are fixed on the load-bearing crest 12 at an angle of 180°. At the same time, since the fastener 4 has an upper limit plate 44, both of them simultaneously complete the limit of the fastener 4 in the positive and negative directions of the Z axis; at the same time, since d2>d1, at this time, the fastener 4 exerts a force on the photovoltaic panels 2 on both sides in the direction of the slot crest 11, so that the inclined surface 322 of the rotating connector 3 is close to the lower inclined surface of the slot crest 11. At this time, the rotating connector 3, the photovoltaic panel 2, and the fastener 4 form a whole. The horizontal force to the outside of the slot crest 11 and the inclined friction force form the limit of the whole in the X-axis direction and the Y-axis direction, and finally completes the limit of the whole in the three directions of XYZ, and completes the fastening of the component, such as Figure 4 , 8 shown.

[0057] Example 2

[0058] This embodiment is described only with respect to the differences from Embodiment 1.

[0059] In this embodiment, Fig.10 , 11 As shown, the fastener 4 includes a first connection part 41 and a second connection part 42 which are hinged to each other, and the two are specifically hinged through a rotating shaft 43. The first connection part 41 and the second connection part 42 are used to connect the side ends of the photovoltaic panel 2 and are rotatably provided with a rotating drum 45. Specifically, the side ends of the first connection part 41 and the second connection part 42 are provided with relative support arms 414, and the rotating drum 45 is rotatably provided in the corresponding support arm 414. The side end of the photovoltaic panel 2 is provided with a sliding groove 22 for the rotating drum 45 to slide into.

[0060] In this embodiment, photovoltaic frames 5 are provided at both ends of the photovoltaic panel 2, and the slots 21 and the slide grooves 22 are provided on the corresponding photovoltaic frames 5. Fig.13 , 14 shown.

[0061] In this embodiment, the fastener 4 also includes a lower limit plate 46, such as Fig.12 As shown, an insertion shaft 461 is provided on the lower limiting plate 46, and correspondingly, there is a cavity in the rotating shaft 43, and the insertion shaft 461 can be inserted into the rotating shaft 43. When the first connecting part 41 and the second connecting part 42 are in the extended state, the insertion shaft 461 is inserted into the rotating shaft 43 to prevent the first connecting part 41 and the second connecting part 42 from returning to the original folded state after being in the extended state.

[0062] The following is a detailed description of the BIPV system installation steps (within an installation range) and working principles of this embodiment.

[0063] Step 1: Insert the rotating connector 3 into the slots 111 of the slot crests 11 at both ends, plug the photovoltaic frame 5 on one side of the photovoltaic panel 2 into the rotating connector 3 and fix them with bolts, and place the other side of the photovoltaic panel 2 on the bearing crest 12. At this time, the distance between the two photovoltaic panels 2 on the bearing crest 12 (slot distance) is defined as d1, and the length of the fastener 4 when the first connection part 41 and the second connection part 42 are unfolded to an angle of 180° (rotating drum distance) is defined as d2, and d2>d1 is required. Fig.15 shown.

[0064] Step 2: Fold the fastener 4 so that the distance between the two rotating cylinders 45 of the folded fastener 4 is equal to d1, and insert the two rotating cylinders 45 into the sliding groove 22 of the photovoltaic frame 5 accordingly. Fig.16 shown.

[0065] Step three: Press the fastener 4 downward, and the rotating drum 45 rolls in the slide groove 22 until the angle between the first connecting part 41 and the second connecting part 42 is 180°; since the fastener 4 has an upper limit plate 44, the positive direction of the Z axis of the fastener 4 can be limited; at the same time, since d2>d1, the fastener 4 has a force on the photovoltaic panels 2 on both sides in the direction of the slot crest 11, so that the inclined surface 322 of the rotating connector 3 is close to the lower inclined surface of the slot crest 11. At this time, the rotating connector 3, the photovoltaic panel 2 (including the photovoltaic frame), and the fastener 4 form a whole. The horizontal force to the outside of the slot crest 11 and the inclined friction force form a limit on the X-axis and Y-axis directions for the whole. This step finally completes the limit on the positive and negative directions of the X and Y axes and the positive direction of the Z axis. Fig.17 shown.

[0066] Step 4: Insert the plug shaft 461 of the lower limit plate 46 into the cavity of the rotating shaft 43. The plug shaft 461 may be provided with a thread and fastened with a nut on the other side so that the lower limit plate 46 is close to the bottom of the fastener 4 to complete the limit in the negative direction of the overall Z axis. At this point, the limit fixation of each axis in each direction of the overall is completed, such as Fig.18 , 19 shown.

[0067] Example 3

[0068] This embodiment is described only with respect to the differences from Embodiment 1.

[0069] In this embodiment, Fig. 20As shown, the fastener 4 includes two sets of mutually hinged first connecting parts 41 and second connecting parts 42, and both are hinged through a rotating shaft 43. The ends of the two first connecting parts 41 away from the second connecting parts 42, and the ends of the two second connecting parts 42 away from the first connecting parts 41 are respectively hinged on the fastening frame 6. The two sides of the photovoltaic panel 2 are also provided with photovoltaic frames 5. The photovoltaic frames 5 are provided with fixed blocks 51 at positions corresponding to the fastening frame 6 and the rotating connecting member 3. The structure of the rotating connecting member 3 is shown in FIG. Fig.21 As shown, both the rotating connector 3 and the fastening frame 6 have fixing grooves 61 that match the fixing block 51 , and the fixing block 51 is fixed in the fixing grooves 61 of the two by using bolts to complete the fixation.

[0070] The fastener 4 also includes a driving mechanism that can drive the two groups of first connecting parts 41 and second connecting parts 42 to extend and fold synchronously. The driving mechanism 7 includes sleeves 71 respectively arranged on the two rotating shafts 43 and a tightening screw 72 passing through the two sleeves 71 and threadedly matched with the sleeves 71; specifically, the rotating shaft 43 is discontinuous in the middle, and the sleeve 71 is arranged in the middle gap, that is, the two short shafts are fixed on both sides of the sleeve 71. When the tightening screw 72 is rotated, the first connecting part 41 and the second connecting part 42 can be driven to extend and fold. In this embodiment, the two groups of first connecting parts 41 and second connecting parts 42 can extend and fold synchronously, and the extending and folding directions are opposite.

[0071] The following is a detailed description of the BIPV system installation steps (within an installation range) and working principles of this embodiment.

[0072] Step 1: Insert the rotating connector 3 into the slots 111 of the slot peaks 11 at both ends, as shown in FIG. Fig. 22 shown.

[0073] Step 2: Connect the photovoltaic frame 5 on one side of the photovoltaic panel 2 to the rotating connector 3 and fix them with bolts. Place the other side of the photovoltaic panel 2 (with frame) on the bearing crest 12 and fix the rotating connector 3 and the photovoltaic frame 5 with bolts. Fig.23 shown.

[0074] Step 3: Rotate and adjust the fastening screw 72 of the fastener 4 to put the fastener 4 in a contracted state (the first connecting portion and the second connecting portion are in a folded state) until the fastener 4 can be placed in the gap between the adjacent photovoltaic panels 2 on the bearing crest 12, such as Fig.24 shown.

[0075] Step 4: Rotate the fastening screw 72 of the fastener 4 in the opposite direction to make the fastener 4 in a stretched state (the first connection part and the second connection part are in an extended state), and the first connection part 41 and the second connection part 42 push the fastening frame 6 to move to both sides. At this time, the fastener 4 exerts a force on the photovoltaic panels 2 on both sides in the direction of the slot crest 11, so that the inclined surface 322 of the rotating connector 3 is close to the lower inclined surface of the slot crest 11, until the photovoltaic panels 2 on both sides are fastened, and then the fastening frame 6 and the photovoltaic frame 5 are fixed with bolts. Fig.25 , 26 shown.

[0076] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A quick-disassembly BIPV system, comprising a metal roof and a plurality of spliced ​​photovoltaic panels arranged on the metal roof, wherein the metal roof has slot crests arranged at intervals, and a load-bearing crest is arranged between adjacent slot crests, characterized in that: The slots are arranged on both sides of the slot crest, and a plurality of rotatable rotating connectors are arranged at intervals in the slot along the length direction thereof. One side end of the photovoltaic panel is fixed to the slot crest through the rotating connector, and the ends of the adjacent photovoltaic panels on the splicing side are placed on the bearing crest. The adjacent photovoltaic panels are connected by a plurality of fasteners arranged at intervals along the splicing gap of the photovoltaic panels, and the rotating connector has a rotating part that can be embedded in the slot and a fixed part connected to the side end of the photovoltaic panel; The fastener comprises a first connection part and a second connection part which are respectively connected to the side ends of adjacent photovoltaic panels and are hingedly arranged. The first connection part and the second connection part of the fastener push the photovoltaic panels on both sides in the extended state, so that the rotating connection part is close to the crest of the card slot, thereby fastening the photovoltaic panels; The fastener also includes an upper limiting plate arranged at the hinge position of the first connection part and the second connection part to prevent the first connection part and the second connection part from folding in the opposite direction after being in the extended state, and a lower limiting plate arranged at the hinge position of the first connection part and the second connection part to prevent the first connection part and the second connection part from returning to the original folded state after being in the extended state.

2. The BIPV system according to any one of claim 1, characterized in that: The first connection part and the second connection part are both provided with grooves along the direction of the splicing gap, and the load-bearing crest is provided with a convex groove which matches with the groove when the first connection part and the second connection part are in an extended state.

3. The BIPV system according to any one of claim 1, characterized in that: The side ends of the first connection part and the second connection part used for connecting the photovoltaic panel are both rotatably provided with a rotating drum, and the side ends of the photovoltaic panel are provided with a sliding groove for the rotating drum to slide into.

4. The BIPV system according to claim 1, characterized in that: The fastener comprises two groups of first connecting parts and second connecting parts which are hingedly arranged, and the fastener also comprises a driving mechanism which can drive the two groups of first connecting parts and second connecting parts to stretch and fold synchronously.

5. The BIPV system according to claim 4, characterized in that: The first connecting part and the second connecting part are hinged via a rotating shaft, and the driving mechanism comprises sleeves respectively arranged on the two rotating shafts and a fastening screw passing through the two sleeves and threadably matched with the sleeves.

6. The BIPV system according to claim 1, characterized in that: The ends of the two first connection parts facing away from the second connection part and the ends of the two second connection parts facing away from the first connection part are respectively hinged on the fastening frame, and the fastener is connected to the side ends of the adjacent photovoltaic panels through the fastening frame.

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