Switching structure, photovoltaic support and photovoltaic system

Abstract

The utility model relates to a switching structure, a photovoltaic support and a photovoltaic system. The switching structure is used for connecting the photovoltaic frame and the supporting structure and comprises a first locking piece and a second locking piece. The first locking piece is provided with a clamping groove, and the clamping groove is used for being connected with the photovoltaic frame in a clamping mode. The second locking piece is detachably connected to the first locking piece, and a locking space is formed between the second locking piece and the first locking piece to clamp the supporting structure. The groove wall face of the clamping groove can abut against the photovoltaic frame, so that movement of the photovoltaic frame in the clamping direction is limited, and the situation that the photovoltaic frame is disengaged from the switching structure due to the fact that the photovoltaic frame is subjected to uneven wind loads can be effectively reduced. The photovoltaic frame and the first locking piece are in hoop type surface contact, a larger contact area is provided, pressure can be better dispersed and borne, local stress concentration is reduced, local abrasion and tearing are reduced, higher contact stability can be provided, external acting force can be better borne, and vibration can be better resisted; therefore, the tearing failure of the photovoltaic frame can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of photovoltaic frame installation, and in particular to a switching structure, a photovoltaic bracket and a photovoltaic system. Background Art

[0002] Flexible photovoltaic brackets are a new type of photovoltaic installation fixed bracket that has emerged in recent years. Compared with fixed brackets, flexible photovoltaic brackets have a certain rigidity to withstand the weight and other loads of photovoltaic modules by tensioning prestressed steel cables, and fix and support photovoltaic modules through connecting structures. Flexible photovoltaic brackets can increase the span area on the same land area, and are suitable for mountainous areas with large slopes and high vegetation, tidal flats with poor geological conditions, fish ponds with deep water levels and large spans, and some large sewage treatment plants.

[0003] In the related art, the connection structure fixes the frame on the cable by combining pressure blocks. Multiple pressure blocks are point-connected to the frame, and the pressure blocks are fixed at a hole on the frame at a single point, which can easily cause stress concentration. Gaps are easily generated under wind loads, causing the frame and the pressure blocks to collide back and forth, which can easily lead to fatigue failure of the connection points. Utility Model Content

[0004] Based on this, it is necessary to provide a transfer structure, a photovoltaic bracket and a photovoltaic system to address the problem that the current transfer structure is prone to stress concentration, which is prone to produce gaps under wind loads, causing the photovoltaic frame and the pressure block to collide back and forth, and easily leading to fatigue failure of the connection points.

[0005] In a first aspect, a transfer structure is provided for connecting a photovoltaic frame and a supporting structure, comprising:

[0006] A first locking member, wherein the first locking member is provided with a card slot, and the card slot is used for card connection with the photovoltaic frame;

[0007] The second locking member is detachably connected to the first locking member and forms a locking space with the first locking member to clamp the supporting structure.

[0008] In one of the embodiments, a reinforcing rib is protruded on the groove wall of the slot.

[0009] In one embodiment, the first locking element is further provided with a locking groove, and the locking groove is spaced apart at one side of the card slot, and the locking space is formed between the locking groove and the second locking element.

[0010] In one embodiment, the card slot is provided on a side surface of the first locking element along the first direction, and extends along the second direction to two opposite sides of the first locking element, and the card slot forms a first opening for the photovoltaic frame to be inserted into the side surface of the first locking element along the first direction;

[0011] The locking groove penetrates the first locking element along the first direction, and forms second openings for inserting the supporting structure on two opposite side surfaces of the first locking element along the first direction, wherein the first direction intersects with the second direction.

[0012] In one embodiment, the first lock element is further penetrated by a first mounting hole connected to the card slot, the second lock element is penetrated by a second mounting hole, the photovoltaic frame is penetrated by a third mounting hole, and the second lock element is penetrated by the first mounting hole, the second mounting hole and the third mounting hole at the same time by a fastener to be detachably connected to the first lock element.

[0013] In one embodiment, the fastener includes a head and a rod that are connected to each other, the head is located outside the second mounting hole, and the rod is connected to the first locking element after passing through the second mounting hole, the third mounting hole, and the first mounting hole.

[0014] In one embodiment, the first locking element is further provided with an installation cavity extending therethrough, and the installation cavity is communicated with the first installation hole and the third installation hole.

[0015] In one embodiment, the first locking element is provided with a first hook portion, and the second locking element is provided with a second hook portion, and the first hook portion is engaged with the second hook portion to form the locking space.

[0016] In a second aspect, a photovoltaic bracket is provided, comprising the support structure and the adapter structure as described in the first aspect.

[0017] In a third aspect, a photovoltaic system includes:

[0018] A photovoltaic assembly, the photovoltaic assembly comprising a solar cell and the photovoltaic frame as described in the first aspect, the photovoltaic frame being used to carry the solar cell;

[0019] A photovoltaic bracket, comprising the supporting structure and the adapter structure as described in the first aspect, wherein the adapter structure is used to connect the photovoltaic frame to the supporting structure.

[0020] The above-mentioned adapter structure includes a first locking member and a second locking member. By setting a card slot on the first locking member, the card slot is engaged with the photovoltaic frame, that is, the wall surface of the card slot can abut against the photovoltaic frame, thereby limiting the movement of the photovoltaic frame along the engagement direction, which can effectively reduce the detachment of the photovoltaic frame from the adapter structure due to uneven wind load on the photovoltaic frame. Furthermore, the photovoltaic frame and the first locking member are in a clamping surface contact, which provides a larger contact area, can better disperse and withstand pressure, evenly bear force, reduce local stress concentration, reduce local wear and tear, and can provide higher contact stability, can better withstand external forces and resist vibration, thereby reducing the tearing failure of the photovoltaic frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] FIG1 is a schematic diagram of a photovoltaic system provided in an embodiment of the present application.

[0022] FIG. 2 is an enlarged view of point A in FIG. 1 .

[0023] FIG. 3 is an enlarged view of a portion of the structure of the photovoltaic system in FIG. 1 from another perspective.

[0024] FIG. 4 is a schematic diagram of a switching structure provided in an embodiment of the present application.

[0025] FIG. 5 is an exploded view of a switching structure provided in an embodiment of the present application.

[0026] Explanation of the accompanying drawings: 1000, photovoltaic system; 100, photovoltaic bracket; 1, adapter structure; 11, first locking piece; 111, slot; 111a, first slot wall; 111b, second slot wall; 111c, third slot wall; 112, reinforcing rib; 113, locking slot; 114, first opening; 115, second opening; 116, first mounting hole; 117, mounting cavity; 118, first hook; 12, second locking piece; 121, second mounting hole; 122, second hook; 13, locking space; 14, fastener; 141, head; 142, rod; 2, supporting structure; 200, photovoltaic module; 3, solar cell; 4, photovoltaic frame. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the following detailed description of the embodiments of the present application is made in conjunction with the accompanying drawings. In the following description, many details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the embodiments disclosed below.

[0028] In the related art, a plurality of pressing blocks are usually arranged in the connection structure for connecting the frame and the steel cable, wherein the first pressing block is arranged above the C-surface of the frame, the second pressing block is arranged below the C-surface of the frame, and the third pressing block is arranged below the second pressing block. The C-surface of the frame is fixed by a bolt between the first pressing block and the second pressing block, and the steel cable is fixed by a bolt between the third pressing block and the second pressing block, thereby indirectly connecting the frame and the steel cable through the connection structure. However, in this fixing method, the three pressing blocks are fixed at a single point by bolts, which is easy to cause stress concentration at the connection point, and when the frame is subjected to a large wind load, relative movement is easy to occur between the connection structure and the frame, causing collision between the connection structure and the frame, and even separation of the connection structure.

[0029] Based on the above problems, please refer to FIG1 . An embodiment of the present application provides a photovoltaic system 1000, including a photovoltaic module 200 and a photovoltaic bracket 100. The photovoltaic module 200 includes a solar cell 3 and a photovoltaic frame 4, and the photovoltaic frame 4 is used to carry the solar cell 3. The photovoltaic bracket 100 includes a support structure 2 and a transfer structure 1, and the transfer structure 1 is used to connect the photovoltaic frame 4 to the support structure 2. Exemplarily, the support structure 2 can be a steel cable or a steel strand, the steel cable is a single steel wire with a larger radial dimension, and the steel strand is formed by winding and weaving multiple steel wires.

[0030] Please refer to Figures 2 and 3. The adapter structure 1 is used to connect the photovoltaic frame 4 and the support structure 2. The adapter structure 1 includes a first locking member 11 and a second locking member 12. The first locking member 11 is provided with a card slot 111, and the card slot 111 is used to be connected with the photovoltaic frame 4. The second locking member 12 is detachably connected to the first locking member 11, and a locking space 13 is formed between the second locking member 12 and the first locking member 11 to hold the support structure 2. By providing the card slot 111, the photovoltaic frame 4 is connected with the card slot 111, and the groove wall of the card slot 111 can abut against the photovoltaic frame 4, thereby limiting the movement of the photovoltaic frame 4 along the connecting direction, which can effectively reduce the movement, collision and even separation between the photovoltaic frame 4 and the adapter structure 1 caused by uneven wind load on the photovoltaic frame 4. Furthermore, the photovoltaic frame 4 and the first locking member 11 have a clamp-type surface contact, which provides a larger contact area, can better disperse and withstand pressure, evenly distribute force, reduce local stress concentration, reduce local wear and tear, and can provide higher contact stability, can better withstand external forces and resist vibration, thereby reducing the tearing failure of the photovoltaic frame 4.

[0031] 4, in some embodiments, a reinforcing rib 112 is provided on the wall of the slot 111. The reinforcing rib 112 can make the slot 111 and the photovoltaic frame 4 form a wedge-shaped deformation and tighten after being engaged, making the connection between the first locking member 11 and the photovoltaic frame 4 more reliable.

[0032] Please refer to FIG. 4 , further, the number of reinforcing ribs 112 may be one or more, such as two, three, four, etc. When there are multiple reinforcing ribs 112, they may be arranged at intervals along a first direction (the AA direction shown in FIG. 4 ), or at intervals along a second direction (the BB direction shown in FIG. 4 ), and the first direction and the second direction intersect. The distances between two adjacent reinforcing ribs 112 may be the same or different.

[0033] Please refer to FIG. 5 , the slot body of the slot 111 includes a first slot wall surface 111a, a second slot wall surface 111b and a third slot wall surface 111c connected to each other. The second slot wall surface 111b is disposed between the first slot wall surface 111a and the third slot wall surface 111c, the first slot wall surface 111a and the third slot wall surface 111c are disposed at intervals, and the third slot wall surface 111c is a surface close to the second locking member 12. The reinforcing rib 112 may be disposed on at least one of the first slot wall surface 111a, the second slot wall surface 111b and the third slot wall surface 111c, for example, the reinforcing rib 112 is disposed on the third slot wall surface 111c, or the reinforcing rib 112 is disposed on the first slot wall surface 111a and the third slot wall surface 111c. Taking the case where the reinforcing rib 112 is disposed on the third slot wall surface 111c as an example, the reinforcing rib 112 and the second slot wall surface 111b are disposed at an angle, for example, they may be disposed at a right angle or at an acute angle. The embodiment of the present application does not limit the cross-sectional shape of the reinforcing rib 112 , and it may be, for example, a square, a parallelogram, a trapezoid, a dovetail shape, or a triangle.

[0034] Please refer to FIG. 5 , in some embodiments, the first locking member 11 is further provided with a locking groove 113, which is arranged at intervals on one side of the locking groove 111, and a locking space 13 is formed between the locking groove 113 and the second locking member 12. The locking groove 113 enables the first locking member 11 to be engaged with the support structure 2. The locking groove 113 can be an arc groove or other shape that matches the radial cross section of the support structure 2, which can increase the contact area between the first locking member 11 and the support structure 2 and improve the connection stability.

[0035] Please refer to FIG. 4 . The arrangement of the lock slot 113 and the card slot 111 includes the following but not limited to the following: In one embodiment, the card slot 111 is arranged on one side of the first lock member 11 along the first direction (the AA direction shown in FIG. 4 ), and extends along the second direction (the BB direction shown in FIG. 4 ) to the opposite sides of the first lock member 11. The card slot 111 forms a first opening 114 for the photovoltaic frame 4 to be inserted into the side of the first lock member 11 along the first direction (the AA direction shown in FIG. 4 ); the lock slot 113 penetrates the first lock member 11 along the first direction (the AA direction shown in FIG. 4 ), and forms a second opening 115 for the support structure 2 to be inserted into the opposite sides of the first lock member 11 along the first direction (the AA direction shown in FIG. 4 ). In other words, the card slot 111 has the same card connection direction for connecting the photovoltaic frame 4 and the card slot 113 has the same card connection direction for connecting the photovoltaic frame 4, which can facilitate the card connection and improve the supporting effect of the support structure 2 on the photovoltaic frame 4.

[0036] In another embodiment, the card slot 111 is provided on one side of the first lock member 11 along the first direction (the AA direction as shown in FIG. 4 ), and extends along the second direction (the BB direction as shown in FIG. 4 ) to the opposite sides that penetrate the first lock member 11, and the card slot 111 forms a first opening 114 for the photovoltaic frame 4 to be inserted into on one side of the first lock member 11 along the first direction (the AA direction as shown in FIG. 4 ); the lock slot 113 penetrates the first lock member 11 along the second direction (the BB direction as shown in FIG. 4 ), and forms a second opening 115 for the support structure 2 to be inserted into on both opposite sides of the first lock member 11 along the second direction (the BB direction as shown in FIG. 4 ). In other words, the card slot 111 and the photovoltaic frame 4 are engaged and the card slot 113 and the support structure 2 are engaged and engaged in a direction that intersects.

[0037] Please refer to FIG. 5 . In some embodiments, the first lock 11 is further provided with a first mounting hole 116 communicating with the card slot 111, the second lock 12 is provided with a second mounting hole 121, the photovoltaic frame 4 is provided with a third mounting hole, and the second lock 12 is provided with the second mounting hole 121, the third mounting hole and the first mounting hole 116 through the fastener 14 to be detachably connected with the first lock 11. Thus, the first lock 11 and the second lock 12 can be connected by a fastener 14. In other words, the adapter structure 1 can be fixed to the photovoltaic frame 4 and the support structure 2 by a fastener 14. Compared with the related art that requires multiple bolt connections, the total number of parts of the adapter structure 1 can be reduced, and the installation work volume can be reduced.

[0038] In the connection structure in the related art, the first pressing block is arranged above the C surface of the frame, and the second pressing block is arranged below the C surface of the frame. In the actual installation process, it is necessary to fix the first pressing block first, and then pass the bolt from the top of the first pressing block downward to lock it with the second pressing block. Due to the small height of the frame, it is impossible to insert an electric wrench to lock the bolt from the top of the first pressing block, and the manual locking bolt can only be inserted from the D surface of the frame manually. Due to the large amount of engineering installation, this method will reduce the construction efficiency, and the manual locking method cannot guarantee the locking quality. The bolts are prone to loosening after being manually tightened. When a bolt is not locked and a gap is generated, there is a wind vibration effect between the connection structure at this location and the frame under wind load, causing a collision between the pressing block and the frame, and fatigue failure of the connection structure. Furthermore, the loosening of the connection structure here will also affect the connection structures at other positions, causing the connection structures at other positions to be subjected to uneven loads, resulting in large-scale tearing of the frame.

[0039] In order to solve the problem that the bolts in the above connection structure are difficult to ensure the locking quality, please refer to Figure 5. In some embodiments, the fastener 14 in the embodiment of the present application includes a head 141 and a rod 142 connected to each other, the head 141 is located outside the second mounting hole 121, and the rod 142 is connected to the first locking member 11 after passing through the second mounting hole 121, the third mounting hole and the first mounting hole 116. In other words, the fastener 14 connects the photovoltaic frame 4 and the first locking member 11 from the bottom of the second locking member 12 upward, and can be locked from the bottom of the photovoltaic frame 4. There is a large operating space below the photovoltaic frame 4, and the fastener 14 can be locked by an electric wrench. By setting the torque of the electric wrench, the locking quality of the fastener 14 of each adapter structure 1 is kept consistent, and the installation quality of the fastener 14 is improved; in addition, compared with manually tightening the bolt, the installation efficiency can be further improved. Exemplarily, the fastener 14 can be a bolt or a screw with a nut.

[0040] Please refer to Figure 5. Further, the rod 142 of the fastener 14 is at least partially located outside the first mounting hole 116. In other words, after the rod 142 passes through the photovoltaic frame 4 and the first locking member 11 from the second locking member 12 upward, it protrudes outside the first locking member 11, which can increase the axial contact area between the fastener 14 and the first locking member 11 and improve the locking stability of the fastener 14.

[0041] Furthermore, in order to further improve the locking quality, in some embodiments, the first mounting hole 116 on the side of the slot body of the slot 111 facing away from the second locking member 12 is provided with an internal thread, and the rod portion 142 is provided with an external thread, so that the rod portion 142 of the fastener 14 is connected and fixed to the internal thread of the slot body above the slot 111.

[0042] 5, in some embodiments, the first lock element 11 is provided with a mounting cavity 117, which is connected to the first mounting hole 116 and the third mounting hole. The mounting cavity 117 can reduce the weight of the first lock element 11 and reduce the influence of the first lock element 11's own gravity.

[0043] Referring to FIG. 4 and FIG. 5 , in some embodiments, the first locking member 11 is provided with a first hook portion 118, and the second locking member 12 is provided with a second hook portion 122. The first hook portion 118 and the second hook portion 122 are engaged with each other to form a locking space 13, which can further improve the connection stability between the first locking member 11 and the second locking member 12. Along the second direction, the locking groove 113 is located between the first hook portion 118 and the mounting cavity 117.

[0044] Please refer to FIG. 5 , and the specific method of using the adapter structure 1 of the present application will be described below: After the card slot 111 of the first lock 11 is engaged with the photovoltaic frame 4, the photovoltaic frame 4 is transferred to the top of the support structure 2, so that the support structure 2 is located in the lock slot 113 of the first lock 11. The second lock 12 is installed, and the second hook 122 of the second lock 12 is engaged with the first hook 118 of the first lock 11, thereby restricting the support structure 2 in the locking space 13. The fastener 14 is passed upward from the bottom of the photovoltaic frame 4 through the second mounting hole 121 of the second lock 12, the third mounting hole of the photovoltaic frame 4, and the first mounting hole 116 of the first lock 11, and the fastener 14 is electrically locked, thereby completing the installation of the adapter structure 1.

[0045] In summary, the adapter structure 1 provided in the embodiment of the present application has at least the following technical effects: First, by adding a card slot 111, the first lock 11 and the photovoltaic frame 4 are connected in a clamp-type surface connection, which improves the connection stability and reduces stress concentration. At the same time, the relative movement between the first lock 11 and the photovoltaic frame 4 is limited to reduce collision and detachment. Second: The connection is achieved only through one fastener 14, which reduces the number of parts, reduces the installation workload, and improves installation efficiency. Third: The fastener 14 is installed from bottom to top, which is convenient for operating the electric wrench, improves installation efficiency and unifies the locking quality, improves locking reliability, and reduces tearing of the photovoltaic frame 4.

[0046] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0047] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, such as two, three, etc., unless otherwise clearly defined.

[0048] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or a part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific situations.

[0049] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0050] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0051] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0052] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively complete and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A transfer structure (1) for connecting a photovoltaic frame (4) and a supporting structure (2), characterized in that: include: A first locking member (11), wherein the first locking member (11) is provided with a card slot (111), and the card slot (111) is used for card connection with the photovoltaic frame (4); A second locking member (12), the second locking member (12) being detachably connected to the first locking member (11), and forming a locking space (13) between the second locking member (12) and the first locking member (11) to clamp the support structure (2).

2. The switching structure (1) according to claim 1, characterized in that: A reinforcing rib (112) is protrudingly provided on the groove wall of the clamping groove (111).

3. The switching structure (1) according to claim 1, characterized in that: The first locking element (11) is further provided with a locking groove (113), the locking groove (113) being arranged at a distance on one side of the card slot (111), and the locking space (13) is formed between the locking groove (113) and the second locking element (12).

4. The switching structure (1) according to claim 3, characterized in that: The card slot (111) is provided on a side surface of the first locking element (11) along the first direction and extends along the second direction to two opposite sides passing through the first locking element (11); the card slot (111) forms a first opening (114) for the photovoltaic frame (4) to be inserted into the side surface of the first locking element (11) along the first direction; The locking groove (113) penetrates the first locking element (11) along the first direction, and forms second openings (115) for inserting the supporting structure (2) on two opposite side surfaces of the first locking element (11) along the first direction, wherein the first direction intersects with the second direction.

5. The switching structure (1) according to claim 1, characterized in that: The first locking member (11) is further provided with a first mounting hole (116) communicating with the card slot (111), the second locking member (12) is provided with a second mounting hole (121), the photovoltaic frame (4) is provided with a third mounting hole, and the second locking member (12) is simultaneously provided with the first mounting hole (116), the second mounting hole (121) and the third mounting hole via a fastener (14) so ​​as to be detachably connected to the first locking member (11).

6. The switching structure (1) according to claim 5, characterized in that: The fastener (14) comprises a head (141) and a rod (142) connected to each other, the head (141) being located outside the second mounting hole (121), and the rod (142) being connected to the first locking element (11) after passing through the second mounting hole (121), the third mounting hole and the first mounting hole (116).

7. The switching structure (1) according to claim 5, characterized in that: The first locking element (11) is further provided with a mounting cavity (117) extending therethrough, the mounting cavity (117) being in communication with the first mounting hole (116) and the third mounting hole.

8. The switching structure (1) according to any one of claims 1 to 7, characterized in that: The first locking element (11) is provided with a first hook portion (118), the second locking element (12) is provided with a second hook portion (122), and the first hook portion (118) and the second hook portion (122) are engaged with each other to form the locking space (13).

9. A photovoltaic support (100), characterized in that: The photovoltaic support (100) comprises the support structure (2) and the adapter structure (1) according to any one of claims 1 to 8.

10. A photovoltaic system (1000), characterized in that: include: A photovoltaic assembly (200), the photovoltaic assembly (200) comprising a solar cell (3) and the photovoltaic frame (4) according to any one of claims 1 to 8, the photovoltaic frame (4) being used for carrying the solar cell (3); A photovoltaic support (100), the photovoltaic support (100) comprising the support structure (2) according to any one of claims 1 to 8 and the adapter structure (1), the adapter structure (1) being used to connect the photovoltaic frame (4) to the support structure (2).

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