Purline for photovoltaic support, photovoltaic module mounting structure and photovoltaic support

Abstract

The invention relates to the field of photovoltaic equipment, in particular to a purline for a photovoltaic support, a photovoltaic module mounting structure and the photovoltaic support, which are used for mounting a photovoltaic module and comprise rectangular pipes which are arranged in parallel along the length direction of the photovoltaic module; the assembly mounting piece is fixedly arranged at the top of the rectangular pipe, the assembly mounting piece comprises a flat plate part, an upper bending part and two groups of first lower bending parts, and the two groups of first lower bending parts are arranged on the left side and the right side in the width direction of the rectangular pipe and are arranged downwards; the flat plate part comprises a first lower bending part and a flat plate part, a fitting space is formed between the first lower bending part and the flat plate part, the fitting space is used for mounting an assembly mounting part to the top of the rectangular pipe, the upper bending part is arranged between the first lower bending part and is arranged upwards, and the first fastener comprises a screw head and a screw rod; the assembly installation piece is fixedly installed on the top of the rectangular pipe through the first fastening piece, the structural strength of the purline is effectively improved, positioning and supporting are convenient during photovoltaic assembly installation, meanwhile, the first fastening piece is convenient to install, and the installation efficiency is effectively improved.

Description

Technical Field

[0001] The present invention relates to the field of photovoltaic equipment, and in particular to a purlin for a photovoltaic support, a photovoltaic module installation structure, and a photovoltaic support. Background Art

[0002] Photovoltaic power generation is a power generation technology that uses solar panels to convert solar energy into electrical energy, and a photovoltaic tracking support is a power device that can adjust the inclination angle of solar panels in real time so that they are always facing the sun directly. The application of the photovoltaic tracking support can effectively increase the solar radiation received by the photovoltaic array, thereby improving the overall power generation of the photovoltaic power generation system.

[0003] In the prior art, purlins are usually arranged on the main beam, and photovoltaic modules are connected to the purlins to fix the photovoltaic modules on the main beam. The purlins in the prior art are usually open inverted U-shaped, and are fixed to the main beam by bolts. The overall strength of such purlins is low, and since the opening is upward, the parts on both sides for carrying profiles are prone to deformation, resulting in local buckling and damage of the bottom surface of the profiles. Moreover, since the parts for carrying profiles are of single-layer structure, additional gaskets need to be provided to increase the local strength, and the installation difficulty is large. In addition, when installing photovoltaic modules, there is no positioning support for adjacent photovoltaic modules, and separate hole alignment work is required, resulting in low installation efficiency. When strong winds come, the structural strength of the purlin with an open structure is poor and the wind resistance is weak.

[0004] To solve the above problems, a purlin for a photovoltaic support, a photovoltaic module installation structure, and a photovoltaic support are proposed in this application. Summary of the Invention

[0005] In view of the above problems existing in the prior art, a purlin for a photovoltaic support, a photovoltaic module installation structure, and a photovoltaic support are provided herein.

[0006] The specific technical solutions are as follows:

[0007] Design a purlin for a photovoltaic support for installing photovoltaic modules, including a rectangular tube, and the rectangular tube is arranged parallel to the length direction of the photovoltaic modules;

[0008] A module installation member is fixedly arranged on the top of the rectangular tube. The module installation member includes a flat part, an upper bending part, and a first lower bending part. There are two groups of the first lower bending parts, and the two groups of the first lower bending parts are arranged on the left and right sides in the width direction of the rectangular tube and extend downward. A fitting space is formed between the first lower bending part and the flat part, and the fitting space is used to install the module installation member to the top of the rectangular tube. The upper bending part is arranged between the first lower bending parts and extends upward.

[0009] The first fastener includes a screw head and a screw rod, and the component mounting member is fixedly mounted on the top of the rectangular tube through the first fastener.

[0010] Preferably, component mounting holes for mounting and fixing a photovoltaic module are provided on the flat portion, first mating holes for mounting the first fastener are provided on the flat portion, and second mating holes for cooperating with the first mating holes are provided on the top of the rectangular tube.

[0011] Preferably, both the first mating hole and the second mating hole are rectangular holes.

[0012] Preferably, a second downwardly bent portion is provided on the first mating hole, and the second downwardly bent portion is used to limit the screw head when the first fastener is installed.

[0013] Preferably, three second mating holes are provided, including two small holes and one large hole. The small holes are symmetrically arranged on both sides of the large hole, and the small holes are used to cooperate with the installation of the second downwardly bent portion.

[0014] Preferably, the second mating hole is composed of a combination of a rectangular hole and a hexagonal hole, the first mating hole is a rectangular hole, the screw head is hexagonal, and a second downwardly bent portion is provided on the first mating hole.

[0015] Preferably, the second mating hole is a T-shaped hole composed of two rectangular holes, the first mating hole is a rectangular hole, the screw head is a flat head, and a second downwardly bent portion is provided on the first mating hole.

[0016] Preferably, a connection step is further provided between the screw head and the screw rod, and the connection step is used to prevent the first fastener from slipping during installation.

[0017] Preferably, the size of the connection step is between the screw rod and the screw head, and the connection step is rectangular or diamond-shaped.

[0018] A photovoltaic module mounting structure includes the purlin for a photovoltaic bracket as described above, and further includes a second fastener. The second fastener passes through the component mounting hole to mount the photovoltaic module to the top of the purlin.

[0019] In addition, a photovoltaic bracket is also disclosed, which includes the photovoltaic module mounting structure as described above, and further includes a purlin fixing member, a main beam, and a column. Purlin mounting holes matching the purlin fixing member are provided on the rectangular tube, and the purlin is fixedly mounted on the main beam through the purlin fixing member. The main beam is rotatably arranged relative to the column.

[0020] The above technical solutions have the following advantages or beneficial effects:

[0021] 1. By replacing the purlins in the prior art with a U-shaped or other open-form purlin with a rectangular tube, the rectangular tube has better load-bearing capacity. Through the component mounting member provided with an upper bending portion and a lower bending portion, the upper bending portion and the lower bending portion can effectively strengthen the structural strength of the flat portion. The fitting space formed between the first lower bending portion and the flat portion facilitates the installation of the component mounting member on the top of the rectangular tube. At the same time, when the photovoltaic module drives the flat portion to deform due to a large wind load, a support structure is formed between the first lower bending portion at the edge of the fitting space and the rectangular tube, thereby forming an overall wind-resistant structure. Through the upwardly provided upper bending portion, when installing the photovoltaic module, both ends of the upper bending portion can be tightly abutted against the frame of the photovoltaic module, thereby facilitating positioning and supporting during the installation of the photovoltaic module and improving the installation efficiency.

[0022] 2. In addition, when installing a nut on the first fastener through the second lower bending portion provided on the first fitting hole, a limit can be formed between the head portion of the screw and the second lower bending portion, avoiding the first fastener rotating and slipping simultaneously with the nut during the tightening of the nut. Through the connecting step provided on the first fastener, the first fastener is effectively prevented from rotating and slipping simultaneously with the nut, facilitating installation and improving the installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Referring to the accompanying drawings, the embodiments of the present invention will be described more fully. However, the accompanying drawings are only for illustration and explanation, and do not constitute a limitation to the scope of the present invention.

[0024] Figure 1 It is a structural diagram of a purlin for a photovoltaic bracket proposed by the present invention;

[0025] Figure 2 It is a structural diagram of a component mounting member in a purlin for a photovoltaic bracket proposed by the present invention;

[0026] Figure 3 It is an exploded structural diagram of a purlin for a photovoltaic bracket proposed by the present invention;

[0027] Figure 4 It is an exploded structural diagram of a purlin for a photovoltaic bracket proposed by the present invention;

[0028] Figure 5 It is an exploded structural diagram of a purlin for a photovoltaic bracket proposed by the present invention;

[0029] Figure 6 It is a purlin for a photovoltaic bracket proposed by the present invention Figure 5 The structural diagram of the component mounting member in;

[0030] Figure 7 It is an exploded structural diagram of a purlin for a photovoltaic bracket proposed by the present invention;

[0031] Figure 8An exploded structure diagram of a purlin for a photovoltaic support proposed by the present invention;

[0032] Figure 9 A structure diagram of a first fastener in a purlin for a photovoltaic support proposed by the present invention;

[0033] Figure 10 A top view of a first fastener in a purlin for a photovoltaic support proposed by the present invention;

[0034] Figure 11 A structure diagram of a first fastener in a purlin for a photovoltaic support proposed by the present invention;

[0035] Figure 12 An exploded structure diagram of a purlin for a photovoltaic support proposed by the present invention;

[0036] Figure 13 An exploded structure diagram of a purlin for a photovoltaic support proposed by the present invention;

[0037] Figure 14 A structure diagram of an installation structure of a photovoltaic module proposed by the present invention;

[0038] Figure 15 An installation structure of a photovoltaic module proposed by the present invention Figure 14 An enlarged structure diagram of part A therein;

[0039] Figure 16 A structure diagram of a photovoltaic support proposed by the present invention;

[0040] The above-mentioned reference numerals represent: 1, rectangular tube; 11, second mating hole; 12, purlin installation hole; 2, component installation part; 21, flat part; 211, component installation hole; 212, first mating hole; 213, second lower bending part; 22, upper bending part; 23, first lower bending part; 3, first fastener; 31, screw head; 32, screw rod; 33, connecting step; 4, purlin fixing part; 5, second fastener; 6, main beam; 7, column. Detailed implementation manners

[0041] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts belong to the scope of protection of the present invention.

[0042] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0043] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but it is not intended to limit the present invention.

[0044] Referring to Figures 1 - 16 , a purlin for a photovoltaic support, which is used for installing photovoltaic modules, includes a rectangular tube 1, and the rectangular tube 1 is arranged parallel to the length direction of the photovoltaic module;

[0045] A component mounting member 2 is fixedly arranged on the top of the rectangular tube 1. The component mounting member 2 includes a flat plate portion 21, an upper bending portion 22, and a first lower bending portion 23. There are two groups of the first lower bending portions 23, and the two groups of the first lower bending portions 23 are arranged on the left and right sides in the width direction of the rectangular tube 1 and are downward. A fitting space is formed between the first lower bending portion 23 and the flat plate portion 21, and the fitting space is used to mount the component mounting member 2 to the top of the rectangular tube 1. The upper bending portion 22 is arranged between the first lower bending portions 23 and is upward.

[0046] A first fastener 3 includes a screw head 31 and a screw rod 32. The component mounting member 2 is fixedly mounted on the top of the rectangular tube 1 through the first fastener 3.

[0047] By replacing the purlin in the form of a U-shaped or other open forms in the prior art with the rectangular tube 1, the load-bearing capacity of the rectangular tube 1 is better. Through the component mounting member 2 provided with the upper bending portion 22 and the lower bending portion 23, the upper bending portion 22 and the lower bending portion 23 can effectively strengthen the structural strength of the flat plate portion 21. The fitting space formed between the first lower bending portion 23 and the flat plate portion 21 facilitates the installation of the component mounting member 2 on the top of the rectangular tube 1. At the same time, when the photovoltaic module drives the flat plate portion 23 to deform due to a large wind load, a support structure is formed between the first lower bending portion 22 at the edge of the fitting space and the rectangular tube 1, thereby forming an overall wind-resistant structure. Through the upwardly arranged upper bending portion 22, when installing the photovoltaic module, both ends of the upper bending portion 22 can be abutted against the frame of the photovoltaic module, so as to facilitate positioning and supporting during the installation of the photovoltaic module and improve the installation efficiency.

[0048] In some alternative embodiments, as Figure 2 shown, a component mounting hole 211 for installing and fixing the photovoltaic module is opened on the flat plate portion 21, a first fitting hole 212 for installing the first fastener 3 is opened on the flat plate portion 21, and a second fitting hole 11 for cooperating with the first fitting hole 212 is opened on the top of the rectangular tube 1. As an alternative solution, the component mounting hole 211 is designed as a waist-shaped hole, which is convenient for cooperating with the photovoltaic module through the second fastener 5 for installation.

[0049] Further, as Figure 4 , Figure 13 shown, both the first fitting hole 212 and the second fitting hole 11 are set as rectangular holes.

[0050] More specifically, a second downward bending portion 213 is provided on the first mating hole 212, and the second downward bending portion 213 is used to limit the position of the screw head 31 when the first fastener 3 is installed.

[0051] As an alternative embodiment, as Figure 5 shown, the second mating holes 11 are provided in three, including two small holes and one large hole. The small holes are symmetrically arranged on both sides of the large hole, and the small holes are used to cooperate with the installation of the second downward bending portion 213.

[0052] In some alternative embodiments, as Figure 7 shown, the second mating hole 11 is composed of a rectangular hole and a hexagonal hole. The first mating hole 212 is provided as a rectangular hole, the screw head 31 is provided as a hexagonal shape, and a second downward bending portion 213 is provided downward on the first mating hole 212.

[0053] In some alternative embodiments, as Figure 8 shown, the second mating hole 11 is provided as a T-shaped hole formed by two rectangular holes. The first mating hole 212 is provided as a rectangular hole, the screw head 31 is provided as a flat shape, and a second downward bending portion 213 is provided downward on the first mating hole 212.

[0054] In addition, as Figure 9 , Figure 11 shown, a connecting step 33 is further provided between the screw head 31 and the screw rod 32, and the connecting step 33 is used to prevent the first fastener 3 from slipping during the installation process.

[0055] Furthermore, the size of the connecting step 33 is between the screw rod 32 and the screw head 31, and the connecting step 33 is provided as a rectangle or a rhombus.

[0056] As Figure 14 , Figure 15 shown, a photovoltaic module mounting structure includes the above-mentioned purlin for a photovoltaic bracket, and further includes a second fastener 5. The second fastener 5 penetrates through the module mounting hole 211 to mount the photovoltaic module 8 to the top of the purlin.

[0057] As Figure 3 , Figure 16 shown, in addition, a photovoltaic bracket is also disclosed, which includes the above-mentioned photovoltaic module mounting structure, and further includes a purlin fixing member 4, a main beam 6, and a column 7. A purlin mounting hole 12 matching the purlin fixing member 4 is formed in the rectangular tube 1, and the purlin is fixedly mounted on the main beam 6 through the purlin fixing member 4. The main beam 6 is rotatably arranged relative to the column 7, and the purlin fixing member 4 can be selected as a U-shaped bolt or other structural forms of fixing members capable of mounting the purlin to the main beam.

[0058] As one of the alternative embodiments, asFigure 4 As shown, the first fastener 3 is set as a common hexagon bolt or T-bolt in the prior art. The first mating hole 212 and the second mating hole 11 are both set as rectangular holes. Two downward second downward bending parts 213 are formed on the second mating hole 11. Half of the distance between the second downward bending parts 23 is between the minimum distance and the maximum distance from the center point to the edge on the bolt head 31.

[0059] Considering the actual situation, when the rectangular pipe 1 and the component mounting part 2 are fixedly connected by the first fastener 3, it is preferred to place the nut outside the rectangular pipe 1, so as to facilitate quick installation and tightening by electric tools. Since part of the bolt head 31 is inside the rectangular pipe 1, it is not convenient to clamp during the process of tightening the nut. By setting the second downward bending part 213, when installing the nut on the first fastener 3, a limit can be formed between part of the bolt head 31 and the second downward bending part 213, avoiding the first fastener 3 slipping simultaneously with the nut during the process of tightening the nut and improving the installation efficiency.

[0060] As the second alternative, as Figure 5 、 Figure 6 shown, the first fastener 3 is set as a common hexagon bolt or T-bolt in the prior art. The first mating hole 212 is set as a rectangular hole. A second downward bending part 213 that is vertically arranged in space with the upward bending part 22 is formed in the first mating hole 212. The second mating hole 11 is set as a structure including a large rectangular hole in the middle position and small rectangular holes on both sides of the large rectangular hole. The large rectangular hole is used to install the first fastener 3 together with the first mating hole 212, and the two small rectangular holes are used to engage with the second downward bending part 213. Compared with the first scheme, the strength at the connection between the component mounting part 2 and the rectangular pipe 1 is higher.

[0061] As the third alternative, as Figure 7As shown in the figure, the first fastener 3 is set as a hexagonal bolt, the second mating hole 11 is set as a through hole formed by a hexagonal hole through which the hexagonal screw head 31 can pass and a rectangular hole, the first mating hole 212 is set as a rectangular hole, and a second lower bending portion 213 is formed at a position parallel to the upper bending portion 22 of the first mating hole 212. When considering the actual situation, when installing two photovoltaic modules in the length direction of a single purlin, for example, in the existing 2P flat-bearing shaft photovoltaic bracket, at least two first fasteners 3 are required to fix and install one module. Therefore, at least one first fastener 3 must be installed at the middle position of the rectangular tube 1. In the installation process, the common holes cannot place the screw head 31 inside the rectangular tube 1, and the screw head 31 cannot be clamped during the installation process, making it difficult to tighten the nut and causing installation difficulties. By setting the first mating hole 213 as a through hole formed by combining a hexagonal hole and a rectangular hole, when installing the first fastener 3, the screw head 31 is placed inside the rectangular tube 1 through the hexagonal hole and then slides towards the rectangular hole direction. Then, the component mounting member 2 is installed on the top of the rectangular tube 1 through the fitting space, and the side of the hexagonal screw head 31 is fitted with the inner wall of the second lower bending portion 213. The nut is tightened on the screw rod 32 through a power tool to complete the installation, facilitating the installation of the first fastener 3 at different positions and improving the installation efficiency.

[0062] As the fourth alternative solution, as Figure 8 shown in the figure, the first fastener 3 is set as a T-shaped bolt, the screw head 31 thereon is set as a flat shape, the second mating hole 11 is set as a T-shaped hole composed of two vertically arranged rectangular holes, and the first mating hole 212 is set as a rectangular hole. As an alternative solution to the third solution, during installation, the screw head 31 is placed inside the rectangular tube 1 through the rectangular hole parallel to the width direction of the rectangular tube 1 and then slides towards the other rectangular hole direction. The component mounting member 2 is installed on the top of the rectangular tube 1 through the fitting space, and the side of the flat screw head 31 is fitted with the inner wall of the second lower bending portion 213. The nut is tightened on the screw rod 32 through a power tool to complete the installation.

[0063] As the fifth alternative solution, as Figure 12 shown in the figure, the second mating holes 11 are all set as rectangular holes, the first mating hole 212 is set as a round hole or other forms of holes through which the screw rod 32 can pass. A connecting step 33 is further provided between the screw head 31 and the screw rod 32. The thickness of the connecting step 33 is not greater than the wall thickness of the rectangular tube 1. The size of the connecting step 33 is between the screw rod 32 and the screw head 31. The connecting step 33 is set as a rectangle matching the rectangular hole. Or, the connecting step 33 is set as shown in Figure 9 、 Figure 10The shown diamond structure, evolved from the circular structure, has a set of straight-edge diagonals. When installing the nut, the connecting step 33 can only rotate within a small range or cannot rotate inside the second mating hole 11, thereby preventing the first fastener 3 from rotating and slipping simultaneously with the nut, which facilitates installation.

[0064] As the sixth alternative, as Figure 13 shown, the first mating hole 212 and the second mating hole 11 are both set as rectangular holes, and the connecting step 33 is set as a rectangle matching the rectangular hole or as Figure 9 , Figure 10 shown diamond structure. The thickness of the connecting step 33 is greater than the thickness of the second mating hole 11, so that the connecting step 33 can be simultaneously matched with the first mating hole 212 and the second mating hole 11 for limiting, improving the connection strength here.

[0065] In addition, to improve the anti-slip effect, anti-slip threads 312 can also be provided on the side of the screw head 31 close to the screw rod 32.

[0066] The above are only the preferred embodiments of the present invention, and do not limit the implementation manners and protection scope of the present invention. For those skilled in the art, it should be realized that all the equivalent replacements and obvious changes made by using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A purlin for a photovoltaic support, used for installing a photovoltaic module, characterized in that: It comprises a rectangular tube (1), wherein the rectangular tube (1) is arranged in parallel along the length direction of the photovoltaic module; A component mounting member (2) is fixedly arranged on the top of a rectangular tube (1), the component mounting member (2) comprising a flat plate portion (21), an upper bent portion (22), and a first lower bent portion (23), two groups of the first lower bent portions (23) are arranged, the two groups of the first lower bent portions (23) are arranged on the left and right sides of the rectangular tube (1) in the width direction and are arranged downward, a fitting space is formed between the first lower bent portion (23) and the flat plate portion (21), the fitting space is used to mount the component mounting member (2) to the top of the rectangular tube (1), the upper bent portion (22) is arranged between the first lower bent portions (23) and is arranged upward. The first fastener (3) comprises a screw head (31) and a screw rod (32); the component mounting member (2) is fixedly mounted on the top of the rectangular tube (1) via the first fastener (3).

2. A purlin for a photovoltaic support according to claim 1, characterized in that: The flat plate portion (21) is provided with a component mounting hole (211) for mounting and fixing a photovoltaic component, the flat plate portion (21) is provided with a first matching hole (212) for mounting a first fastener (3), and the top of the rectangular tube (1) is provided with a second matching hole (11) for use with the first matching hole (212).

3. A purlin for a photovoltaic support according to claim 2, characterized in that: The first matching hole (212) and the second matching hole (11) are both configured as rectangular holes.

4. A purlin for a photovoltaic support according to claim 3, characterized in that: The first matching hole (212) is provided with a second lower bent portion (213) arranged downwards, and the second lower bent portion (213) is used to limit the position of the screw head (31) when the first fastener (3) is installed.

5. A purlin for a photovoltaic support according to claim 4, characterized in that: The second matching holes (11) are arranged in three numbers, including two small holes and one large hole, and the small holes are symmetrically arranged on both sides of the large hole, and the small holes are used for matching and installing the second lower bending part (213).

6. The purlin for a photovoltaic support according to claim 2, characterized in that: The second matching hole (11) is composed of a rectangular hole and a hexagonal hole, the first matching hole (212) is configured as a rectangular hole, the screw head (31) is configured as a hexagonal hole, and the first matching hole (212) is provided with a second lower bending portion (213) arranged downward.

7. The purlin for a photovoltaic support according to claim 2, characterized in that: The second matching hole (11) is configured as a T-shaped hole composed of two rectangular holes, the first matching hole (212) is configured as a rectangular hole, the screw head (31) is configured as a straight line, and the first matching hole (212) is provided with a second lower bending portion (213) arranged downward.

8. The purlin for a photovoltaic support according to claim 1, characterized in that: A connecting step (33) is also provided between the screw head (31) and the screw rod (32), and the connecting step (33) is used to prevent the first fastener (3) from slipping during installation.

9. A purlin for a photovoltaic support according to claim 8, characterized in that: The size of the connecting step (33) is between the screw rod (32) and the screw head (31), and the connecting step (33) is configured to be rectangular or rhombus-shaped.

10. A photovoltaic assembly installation structure, comprising the photovoltaic support purlin according to any one of claims 1 to 9, characterized in that: It also includes a second fastener (5), which penetrates the component mounting hole (211) to mount the photovoltaic component (8) to the top of the purlin.

11. A photovoltaic support, comprising the photovoltaic assembly mounting structure according to claim 10, characterized in that: It also comprises a purlin fixing member (4), a main beam (6), and a column (7); the rectangular tube (1) is provided with a purlin mounting hole (12) matching the purlin fixing member (4); the purlin is fixedly mounted on the main beam (6) through the purlin fixing member (4); and the main beam (6) is rotatably arranged relative to the column (7).

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