Photovoltaic mounting bracket structure

Abstract

The utility model discloses a photovoltaic mounting bracket structure, which comprises a supporting assembly and a bottom beam arranged on a roof, the supporting assembly comprises four supporting beams, two of the supporting beams are arranged on the front side of the bottom beam along a second horizontal direction and are detachably connected with the bottom beam into a whole through a three-way connecting piece, and the bottom beam is arranged on the supporting assembly. The other two supporting beams are arranged on the rear side of the bottom beam in the second horizontal direction, the other two supporting beams and the two supporting beams located on the front side are symmetrically arranged in the second horizontal direction, and the other two supporting beams and the bottom beam are detachably connected into a whole through a three-way connecting piece. The upper end faces of the two supporting beams located at the front end are provided with first supporting legs. Second supporting legs are arranged on the upper end faces of the two supporting beams located at the rear end, and the upper end faces of the first supporting legs are lower than the upper end faces of the corresponding second supporting legs. During installation, the photovoltaic panel abuts against the upper end faces of the first supporting leg and the second supporting leg. According to the utility model, the types of required profiles and the number of required parts are less, and the installation efficiency is improved while the cost is reduced.

Description

Technical Field

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

[0002] A solar photovoltaic bracket is a special bracket designed for placing, installing and fixing solar photovoltaic panels in a solar photovoltaic power generation system. Currently, most of the photovoltaic bracket structures used in flat roofs of buildings adopt a cubic structure formed by front and rear columns with a height difference, inclined beams arranged between the front and rear columns, and horizontal and longitudinal beams, plus a ground bottom beam to fix the position, and then precast concrete blocks are placed on the ground bottom beam to increase the stability of the photovoltaic bracket structure. However, the above-mentioned photovoltaic bracket structure requires a large amount of materials and a large number of profiles, resulting in high costs, complex installation and low installation efficiency. Utility Model Content

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the defects of the photovoltaic bracket structure in the prior art, such as the large amount of material consumption and the large number of profile types, which lead to high cost and low installation efficiency, thereby providing a photovoltaic mounting bracket structure.

[0004] A photovoltaic mounting bracket structure provided by the utility model includes:

[0005] A bottom beam, arranged on the roof along a first horizontal direction;

[0006] A support assembly, comprising four support beams, wherein two of the support beams are arranged at the front side of the bottom beam along the second horizontal direction, and are detachably connected to the bottom beam through a three-way connecting member, and the other two support beams are arranged at the rear side of the bottom beam along the second horizontal direction, and are symmetrically arranged with the two support beams located at the front side along the second horizontal direction, and are detachably connected to the bottom beam through a three-way connecting member; the two support beams located at the front end are inclined and gradually move away from each other in the second horizontal direction in a direction away from the bottom beam, and the two support beams located at the front side are symmetrically arranged along the first horizontal direction;

[0007] A first leg is provided on the upper end surface of the two support beams at the front end facing away from the bottom beam; a second leg is provided on the upper end surface of the two support beams at the rear end facing away from the bottom beam, and the projection of the second leg along the second horizontal direction falls within the range of the corresponding first leg; during installation, the photovoltaic panel is abutted against the upper end surfaces of the first leg and the second leg.

[0008] A photovoltaic mounting bracket structure according to the utility model has at least the following technical effects:

[0009] 1. By arranging four support beams and a bottom beam in a "M" shape, the two support beams at the front end are each provided with a first leg, and the two support beams at the rear end are each provided with a second leg, the two first legs and the two second legs provide space for installation support for the photovoltaic panel, and the four support beams and the bottom beam arranged in a "M" shape ensure the stability of the support structure when assembled on a flat roof; the support structure adopts four support beams of the same profile to form a support assembly, and cooperates with the first leg and the second leg to support and install the photovoltaic panel. Compared with the traditional photovoltaic support structure, the support structure requires fewer types of profiles and fewer components, and the number of connection points is correspondingly reduced, so that the installation efficiency is improved while reducing costs.

[0010] 2. The two support beams and the bottom beam located on the same side along the second horizontal direction are detachably connected into one body through a three-way connecting piece, which further reduces the connection nodes, simplifies the installation process, and improves the installation efficiency; at the same time, because one end of the support beam is installed against the side wall of the bottom beam along the second horizontal direction, even if the precast concrete block is pressed on the upper end surface of the bottom beam, the support beam can still be easily separated from the bottom beam after the three-way connecting piece is removed, so as to facilitate later maintenance.

[0011] Preferably, the three-way connecting member includes a horizontal portion and a first connecting portion and a second connecting portion symmetrically arranged on the left and right sides of the horizontal portion along the first horizontal direction; the horizontal portion is provided with a first through hole formed along its thickness direction, the first connecting portion is provided with a second through hole formed along its thickness direction, and the second connecting portion is provided with a third through hole formed along its thickness direction; a first internal threaded hole is provided at a position corresponding to the first through hole on the bottom beam, and the two support beams located on the same side along the second horizontal direction are provided with the first internal threaded holes at positions corresponding to the second through hole and the third through hole; when connected, three first fastening bolts respectively pass through the first through hole, the second through hole and the third through hole and are screwed into the corresponding first internal threaded holes.

[0012] Preferably, the end surface of the support beam facing the bottom beam is arranged as a first inclined surface, and the inclination angle of the first inclined surface and the included angle formed between the corresponding support beam and the bottom beam are complementary angles.

[0013] Preferably, the upper end surface of the first leg gradually tilts upward along the second horizontal direction away from the second leg to form a second inclined surface; the upper end surface of the second leg gradually tilts downward along the second horizontal direction away from the first leg to form a third inclined surface, and the third inclined surface is parallel to the second inclined surface.

[0014] Preferably, a first limit plate is provided in the middle of the upper end surface of the first leg, the first limit plate is perpendicular to the second inclined surface, and during installation, the first limit plate is used to abut against one end surface of the photovoltaic panel along the width direction of the photovoltaic panel.

[0015] Preferably, a second limit plate is provided in the middle of the upper end surface of the second leg, and the second limit plate is perpendicular to the third inclined surface; when installed, the first limit plate and the second limit plate are respectively used to abut against the two end surfaces of the photovoltaic panel along the width direction of the photovoltaic panel.

[0016] Preferably, a circular adapter is provided between the support beam and the first leg and the second leg, and the circular adapter is detachably connected to the support beam; and the diameter of the circular adapter is greater than the width of the support beam.

[0017] Preferably, at least two fourth through holes are formed through the circular adapter, and a second internal threaded hole is provided on the upper end surface of the support beam at a position corresponding to the fourth through hole; when connected, the second fastening bolt passes through the fourth through hole and is screwed into the second internal threaded hole.

[0018] Preferably, at least two third internal threaded holes are provided on the upper end surface of the circular adapter, and fifth through holes are provided at positions of the first leg and the second leg corresponding to the third internal threaded holes.

[0019] Preferably, the bottom beam and the support beam have the same structure and are both channel steels.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 A schematic diagram of the structure of a photovoltaic mounting bracket structure equipped with a photovoltaic panel in this embodiment;

[0023] Figure 2 This is a partial structural schematic diagram of the support assembly in this embodiment connected to the bottom beam via a three-way connector;

[0024] Figure 3This is a partial structural schematic diagram of the assembly of the circular adapter and the support beam in this embodiment;

[0025] Figure 4 is a schematic structural diagram of the first leg in this embodiment;

[0026] Figure 5 is a schematic structural diagram of the second leg in this embodiment;

[0027] Figure 6 Schematic diagram of the structure of the support beam in this embodiment.

[0028] Description of reference numerals:

[0029] 1- Bottom beam;

[0030] 2-support beam, 21-first inclined surface, 22-circular adapter;

[0031] 3-three-way connecting member, 31-horizontal part, 311-first through hole, 32-first connecting part, 321-second through hole, 33-second connecting part, 331-third through hole;

[0032] 4-first leg, 41-second inclined surface, 42-first limiting plate, 43-fifth through hole;

[0033] 5-second supporting leg, 51-third inclined surface, 52-second limiting plate;

[0034] 6- Photovoltaic panels. DETAILED DESCRIPTION

[0035] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0039] like Figures 1 to 5 The photovoltaic mounting bracket structure provided by the present embodiment is shown, comprising a supporting assembly and a bottom beam 1 arranged on a roof along a first horizontal direction, wherein the supporting assembly comprises four supporting beams 2, wherein two of the supporting beams 2 are arranged at the front side of the bottom beam 1 along a second horizontal direction, and are detachably connected to the bottom beam 1 as a whole through a three-way connecting member 3, and the other two supporting beams 2 are arranged at the rear side of the bottom beam 1 along the second horizontal direction, and are symmetrically arranged with the two supporting beams 2 located at the front side along the second horizontal direction, and are detachably connected to the bottom beam 1 as a whole through a three-way connecting member 3; The two support beams 2 at the front end are inclined and gradually move away from each other along the second horizontal direction in a direction away from the bottom beam 1, and the two support beams 2 at the front side are symmetrically arranged along the first horizontal direction; the upper end surfaces of the two support beams 2 at the front end facing away from the bottom beam 1 are provided with first legs 4; the upper end surfaces of the two support beams 2 at the rear end facing away from the bottom beam 1 are provided with second legs 5, and the projections of the second legs 5 along the second horizontal direction fall within the range of the corresponding first legs 4; during installation, the photovoltaic panels 6 are abutted against the upper end surfaces of the first legs 4 and the second legs 5. It can be understood that the first horizontal direction mentioned in the text refers to Figure 1 The first horizontal direction in the text refers to the second horizontal direction Figure 1 The second horizontal direction in .

[0040] The support structure of this embodiment arranges four support beams 2 and a bottom beam 1 in a shape similar to a "rice" character. First legs 4 are provided on both of the two support beams 2 at the front end, and second legs 5 are provided on both of the two support beams 2 at the rear end. The two first legs 4 and the two second legs 5 provide a space for installing and supporting a photovoltaic panel 6, and the four support beams 2 and the bottom beam 1 arranged in a shape similar to a "rice" character ensure the stability of this support structure when assembled on a flat roof. The support structure of this embodiment forms a support assembly with four support beams 2 made of the same profile, and cooperates with the first legs 4 and the second legs 5 to support and install the photovoltaic panel 6. Compared with traditional photovoltaic support structures, the support structure of this embodiment requires fewer types of profiles and fewer components, and the number of connection points is also correspondingly reduced, so as to improve the installation efficiency while reducing costs. Also, a three-way connector 3 detachably connects the two support beams 2 on the same side along the second horizontal direction and the bottom beam 1 into one body, further reducing the connection nodes, simplifying the installation process, and improving the installation efficiency. At the same time, because one end of the support beam 2 abuts and is installed on the side wall of the bottom beam 1 along the second horizontal direction, even when a precast concrete block is pressed on the upper end surface of the bottom beam 1, it is still possible to easily separate the support beam 2 from the bottom beam 1 after removing the three-way connector 3 for later maintenance.

[0041] It can be understood that by making the projection of the second leg 5 along the second horizontal direction fall within the range of the corresponding first leg 4, the upper end surface position of the first leg 4 is higher than the upper end surface position of the second leg 5, so that the photovoltaic panel 6 installed between the first leg 4 and the second leg 5 is inclined at a certain slope, better receiving sunlight.

[0042] It can be understood that after installation, a carrier such as a precast concrete block is placed on the upper end surface of the bottom beam 1 and pressed on the bottom beam 1 to prevent the overall structure from flipping caused by strong winds.

[0043] In specific applications, the number of support assemblies is reasonably increased or decreased according to the number of photovoltaic panels 6 to be installed. For example, in some embodiments, the support assemblies are provided in two groups, three groups, four groups, five groups or other numbers, and multiple groups of support assemblies are arranged on the bottom beam 1 at intervals along the first horizontal direction. As Figure 1 shown, two groups of support assemblies are provided in this embodiment.

[0044] To further reduce the types of profiles required for the support structure of this embodiment, optionally, the bottom beam 1 and the support beam 2 have the same structure and are both channel steels.

[0045] As Figure 1 and Figure 2As shown, optionally, the three-way connecting member 3 includes a horizontal portion 31 and a first connecting portion 32 and a second connecting portion 33 symmetrically arranged on the left and right sides of the horizontal portion 31 along the first horizontal direction; the horizontal portion 31 is penetrated with a first through hole 311 along its thickness direction, the first connecting portion 32 is penetrated with a second through hole 321 along its thickness direction, and the second connecting portion 33 is penetrated with a third through hole 331 along its thickness direction; a first internal threaded hole is arranged at a position corresponding to the first through hole 311 on the bottom beam 1, and the first internal threaded holes are arranged at positions corresponding to the second through hole 321 and the third through hole 331 of the two support beams 2 located on the same side along the second horizontal direction; when the two support beams 2 located on the same side of the second direction are assembled with the bottom beam 1 During the integration process, first align the first through hole 311 with the first threaded hole on the bottom beam 1, and use the first fastening bolt to connect the three-way connecting member 3 and the bottom beam 1 into one, then abut the two support beams 2 on the same side of the second direction against the side wall of the bottom beam 1, and align the first internal threaded holes of the two support beams 2 with the corresponding second through holes 321 and the third through holes 331, and then use two first fastening bolts to pass through the second through holes 321 and the third through holes 331 respectively and screw them into the first internal threaded holes corresponding to the two support beams 2, so that the two support beams 2 on the same side of the second direction can be connected to the three-way connecting member 3 as a whole, thereby assembling the two support beams 2 on the same side of the second direction and the bottom beam 1 into one, and the entire installation process is simple to operate and has high installation efficiency.

[0046] In order to increase the contact connection area between the support beam 2 and the bottom beam 1 after the support beam 2 and the bottom beam 1 are connected into one body through the three-way connecting member 3, and improve the stability of the connection; Figure 1 , Figure 2 and Figure 6 As shown, optionally, the end surface of the support beam 2 facing the bottom beam 1 is set as a first inclined surface 21, and the inclination angle of the first inclined surface 21 and the corresponding angle formed between the support beam 2 and the bottom beam 1 are complementary angles.

[0047] like Figure 1 , Figure 4 and Figure 5 As shown, optionally, the upper end surface of the first leg 4 gradually tilts upward along the second horizontal direction away from the second leg 5 to form a second tilted surface 41; the upper end surface of the second leg 5 gradually tilts downward along the second horizontal direction away from the first leg 4 to form a third tilted surface 51, and the third tilted surface 51 is parallel to the second tilted surface 41. The first tilted surface 21 and the second tilted surface 41 are adapted to the slope of the photovoltaic panel 6 installation, increasing the contact area with the photovoltaic panel 6 and improving the stability of the photovoltaic panel 6 installation.

[0048] like Figure 1 and Figure 4 As shown, optionally, a first limiting plate 42 is provided in the middle of the upper end surface of the first leg 4, and the first limiting plate 42 is perpendicular to the second inclined surface 41. When installed, the first limiting plate 42 is used to abut against one end surface of the photovoltaic panel 6 along the width direction of the photovoltaic panel 6. The first limiting plate 42 provides a positioning reference surface for the photovoltaic panel 6 to install the photovoltaic panel 6 more accurately.

[0049] like Figure 1 , Figure 4 and Figure 5 As shown, optionally, a second limiting plate 52 is provided in the middle of the upper end surface of the second leg 5, and the second limiting plate 52 is perpendicular to the third inclined surface 51; during installation, the first limiting plate 42 and the second limiting plate 52 are respectively used to abut against the two end surfaces of the photovoltaic panel 6 along the width direction of the photovoltaic panel 6. The first limiting plate 42 and the second limiting plate 52 are contacted, supported and limited with the two end surfaces of the photovoltaic panel 6 in the width direction, so as to further improve the stability of the installation of the photovoltaic panel 6.

[0050] It should be noted that after the photovoltaic panel 6 is installed on the first leg 4 and the second leg 5, except for the first leg 4 and the second leg 5 partially exposed on the surface of the photovoltaic panel 6, the remaining connections of this embodiment are all located below the photovoltaic panel 6. Most of the structure of this embodiment cannot be seen from the outside, does not occupy the space on the flat roof, and is beautiful.

[0051] like Figure 1 and Figure 3 As shown, optionally, a circular adapter 22 is provided between the support beam 2 and the first leg 4 and the second leg 5, and the circular adapter 22 is detachably connected to the support beam 2; the diameter of the circular adapter 22 is greater than the width of the support beam 2. The circular adapter 22 increases the contact area between the first leg 4 and the second leg 5 and the support beam 2, thereby increasing the support stability of the first leg 4 and the second leg 5; and by increasing the installation space, the first leg 4 and the second leg 5 can be installed. At the same time, by detachably connecting the circular adapter 22 to the support beam 2, compared with connecting by welding, the first leg 4 or the second leg 5 can be removed for later maintenance.

[0052] This embodiment does not restrict the detachable connection structure between the circular adapter 22 and the support beam 2. In order to improve the convenience of assembly and disassembly of the two while ensuring the stability of the connection between the two, preferably, at least two fourth through holes are formed through the circular adapter 22, preferably three fourth through holes are provided here, and a second internal threaded hole is provided at the upper end surface of the support beam 2 at a position corresponding to the fourth through hole; when connected, the second fastening bolt passes through the fourth through hole and is screwed into the second internal threaded hole. Of course, in other embodiments, the circular adapter 22 and the support beam 2 can also be connected by a detachable plug-in method of a slot and a plug post.

[0053] Optionally, the upper end surface of the circular adapter 22 is provided with at least two third internal threaded holes, preferably two third internal threaded holes, and the first leg 4 and the second leg 5 are provided with fifth through holes 43 at positions corresponding to the third internal threaded holes. When the first leg 4 needs to be installed on the circular adapter 22, the fifth through hole 43 of the first leg 4 is first aligned with the third internal threaded hole, and then the third fastening bolt is passed through the fifth through hole 43 and screwed into the third internal threaded hole to realize the first leg 4 and the circular adapter 22 are detachably connected as one body, and the whole installation process is simple and easy to operate. When the second leg 5 needs to be installed on the circular adapter 22, the fifth through hole 43 of the second leg 5 is first aligned with the third internal threaded hole, and then the third fastening bolt is passed through the fifth through hole 43 and screwed into the third internal threaded hole to realize the second leg 5 and the circular adapter 22 are detachably connected as one body, and the whole installation process is simple and easy to operate.

[0054] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A photovoltaic mounting bracket structure, characterized in that: include: A bottom beam (1) is arranged on the roof along a first horizontal direction; A support assembly, comprising four support beams (2), wherein two of the support beams (2) are arranged on the front side of the bottom beam (1) along the second horizontal direction, and are detachably connected to the bottom beam (1) via a three-way connecting member (3) to form an integral body; the other two support beams (2) are arranged on the rear side of the bottom beam (1) along the second horizontal direction, and are symmetrically arranged with the two support beams (2) located at the front side along the second horizontal direction, and are detachably connected to the bottom beam (1) via a three-way connecting member (3) to form an integral body; the two support beams (2) located at the front end are arranged to be gradually away from each other along the second horizontal direction in a direction away from the bottom beam (1), and the two support beams (2) located at the front side are symmetrically arranged along the first horizontal direction; The upper end surfaces of the two support beams (2) at the front end and facing away from the bottom beam (1) are provided with a first support leg (4); the upper end surfaces of the two support beams (2) at the rear end and facing away from the bottom beam (1) are provided with a second support leg (5), and the projection of the second support leg (5) along the second horizontal direction falls within the range of the corresponding first support leg (4); during installation, the photovoltaic panel (6) is arranged to abut against the upper end surfaces of the first support leg (4) and the second support leg (5).

2. A photovoltaic mounting bracket structure according to claim 1, characterized in that: The three-way connecting member (3) comprises a horizontal portion (31) and a first connecting portion (32) and a second connecting portion (33) symmetrically arranged on the left and right sides of the horizontal portion (31) along a first horizontal direction; the horizontal portion (31) is provided with a first through hole (311) along its thickness direction, the first connecting portion (32) is provided with a second through hole (321) along its thickness direction, and the second connecting portion (33) is provided with a third through hole (331) along its thickness direction; a first internal threaded hole is provided at a position corresponding to the first through hole (311) on the bottom beam (1), and the first internal threaded holes are provided at positions corresponding to the second through hole (321) and the third through hole (331) on the two support beams (2) located on the same side along the second horizontal direction; when connected, three first fastening bolts respectively pass through the first through hole (311), the second through hole (321) and the third through hole (331) and are screwed into the corresponding first internal threaded holes.

3. A photovoltaic mounting bracket structure according to claim 1, characterized in that: The end surface of the support beam (2) facing the bottom beam (1) is arranged as a first inclined surface (21), and the inclination angle of the first inclined surface (21) and the included angle formed between the corresponding support beam (2) and the bottom beam (1) are complementary angles.

4. A photovoltaic mounting bracket structure according to claim 1, characterized in that: The upper end surface of the first leg (4) gradually tilts upwards along a second horizontal direction in a direction away from the second leg (5) to form a second tilted surface (41); the upper end surface of the second leg (5) gradually tilts downwards along a second horizontal direction in a direction away from the first leg (4) to form a third tilted surface (51), and the third tilted surface (51) is parallel to the second tilted surface (41).

5. A photovoltaic mounting bracket structure according to claim 4, characterized in that: A first limiting plate (42) is provided in the middle of the upper end surface of the first supporting leg (4); the first limiting plate (42) is perpendicular to the second inclined surface (41); during installation, the first limiting plate (42) is used to abut against an end surface of the photovoltaic panel (6) along the width direction of the photovoltaic panel (6).

6. A photovoltaic mounting bracket structure according to claim 5, characterized in that: A second limiting plate (52) is provided in the middle of the upper end surface of the second supporting leg (5), and the second limiting plate (52) is perpendicular to the third inclined surface (51); during installation, the first limiting plate (42) and the second limiting plate (52) are respectively used to abut against the two end surfaces of the photovoltaic panel (6) along the width direction of the photovoltaic panel (6).

7. A photovoltaic mounting bracket structure according to any one of claims 1 to 6, characterized in that: A circular adapter (22) is provided between the support beam (2) and the first leg (4) and the second leg (5); the circular adapter (22) is detachably connected to the support beam (2); and the diameter of the circular adapter (22) is greater than the width of the support beam (2).

8. A photovoltaic mounting bracket structure according to claim 7, characterized in that: At least two fourth through holes are formed through the circular adapter (22), and a second internal threaded hole is provided on the upper end surface of the support beam (2) at a position corresponding to the fourth through hole; when connected, the second fastening bolt passes through the fourth through hole and is screwed into the second internal threaded hole.

9. A photovoltaic mounting bracket structure according to claim 8, characterized in that: The upper end surface of the circular adapter (22) is provided with at least two third internal threaded holes, and the first leg (4) and the second leg (5) are provided with fifth through holes (43) at positions corresponding to the third internal threaded holes.

10. A photovoltaic mounting bracket structure according to claim 1, characterized in that: The bottom beam (1) and the support beam (2) have the same structure and are both channel steels.

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