Photovoltaic support with adjustable purline supporting height

Abstract

The embodiment of the utility model provides a photovoltaic support with adjustable purline supporting height, and relates to the field of photovoltaic technology. The photovoltaic support comprises a front stand column, a rear stand column, an oblique beam, a first screw rod, a purline and a first adjusting nut. Wherein the top ends of the front upright post and the rear upright post are respectively connected with the oblique beam; the first screw rod penetrates through the oblique beam and protrudes out of the oblique beam; the purline is used for being connected with a photovoltaic module and is fastened on the part, protruding out of the oblique beam, of the first screw rod through a first adjusting nut; the fastening position of the first adjusting nut can be adjusted relative to the first screw, so that the supporting height of the purline to the photovoltaic module is adjusted, and the inclination angle of the photovoltaic module is adjusted. The photovoltaic support provided by the embodiment of the utility model can ensure that the inclination angle of the photovoltaic assembly is consistent with the originally designed installation inclination angle, is suitable for the influence caused by differential settlement of a foundation, and ensures the overall benefit of a photovoltaic power station.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaics, and in particular to a photovoltaic bracket with adjustable purlin support height. Background Art

[0002] At present, photovoltaic brackets are generally connected to photovoltaic modules through purlins. When the photovoltaic plant is located in areas such as ash fields, landfills, and mining areas, the foundation may settle unevenly, which may cause the columns of the photovoltaic bracket to sink unevenly, and the inclined beams and purlins to deform or even be damaged. It is difficult to ensure that the inclination angle of the photovoltaic module is consistent with the original design installation angle, which ultimately affects the overall benefits of the photovoltaic power station. Utility Model Content

[0003] The purpose of the utility model is to provide a photovoltaic bracket with adjustable purlin support height, which can ensure that the inclination angle of the photovoltaic module is consistent with the original design installation inclination angle, adapt to the influence of uneven foundation settlement, and ensure the overall benefit of the photovoltaic power station.

[0004] The embodiment of the utility model is achieved as follows:

[0005] In a first aspect, the utility model provides a photovoltaic support with adjustable purlin support height, comprising a front column, a rear column, an inclined beam, a first screw rod, a purlin and a first adjusting nut;

[0006] The top ends of the front column and the rear column are respectively connected to the inclined beam; the first screw rod passes through the inclined beam and protrudes from the inclined beam; the purlin is used to connect with the photovoltaic module, and is fastened to the part of the first screw rod protruding from the inclined beam through the first adjusting nut; the first adjusting nut can adjust the fastening position relative to the first screw rod, thereby adjusting the supporting height of the purlin to the photovoltaic module to adjust the inclination angle of the photovoltaic module.

[0007] Further, in an optional embodiment, the first adjusting nut includes a first upper nut and a first lower nut;

[0008] The first upper nut and the first lower nut are both threadably matched with the first screw rod, and the purlin is at least partially fastened between the first upper nut and the first lower nut.

[0009] Further, in an optional embodiment, the purlin includes an upper edge plate, a web plate and a lower edge plate;

[0010] One side of the upper edge plate is connected to one side of the web plate, and the other side of the web plate is connected to one side of the lower edge plate;

[0011] The upper edge plate is used for connecting the photovoltaic components, and the lower edge plate is fastened between the first upper nut and the first lower nut.

[0012] Further, in an optional embodiment, the upper edge plate, the web plate and the lower edge plate are connected to form a C-shaped purlin.

[0013] Furthermore, in an optional embodiment, it further includes a purlin connector, a second adjusting nut and a second screw rod;

[0014] The second screw rod passes through the oblique beam and protrudes from the oblique beam; the purlin connector is connected to the purlin and is fastened to the portion of the second screw rod protruding from the oblique beam through the second adjusting nut; the second adjusting nut can adjust the fastening position relative to the second screw rod.

[0015] Further, in an optional embodiment, the second adjusting nut includes a second upper nut and a second lower nut;

[0016] The second upper nut and the second lower nut are both threadably matched with the second screw rod, and the purlin connector is at least partially fastened between the second upper nut and the second lower nut.

[0017] Further, in an optional embodiment, the purlin connector includes a first connecting plate and a second connecting plate;

[0018] One side of the first connecting plate is connected to one side of the second connecting plate, and the first connecting plate is detachably connected to the purlin;

[0019] The second connecting plate is fastened between the second upper nut and the second lower nut.

[0020] Further, in an optional embodiment, the height of the first screw rod and the second screw rod protruding from the inclined beam is 5 to 10 cm.

[0021] Further, in an optional embodiment, it further includes a first fastening nut and a second fastening nut;

[0022] The first screw rod and the first fastening nut are threadedly matched to fasten the inclined beam between the first nut of the first screw rod and the first fastening nut;

[0023] The second screw rod and the second fastening nut are threadably matched to fasten the inclined beam between the second nut of the second screw rod and the second fastening nut.

[0024] Further, in an optional embodiment, the number of the purlins, the first screw rods and the first adjusting nuts are all correspondingly multiple, and the multiple purlins are arranged in sequence at intervals along the length direction of the inclined beam, and are fastened to the corresponding first screw rods on the parts protruding from the inclined beam through the corresponding first adjusting nuts.

[0025] The beneficial effects of the photovoltaic bracket with adjustable purlin support height provided by the embodiment of the utility model include:

[0026] By adjusting the fastening position of the first adjusting nut relative to the first screw rod, the support height of the purlin to the photovoltaic module can be adjusted, thereby adjusting the inclination angle of the photovoltaic module. In the case where the uneven settlement of the foundation causes the uneven settlement of the front column or the rear column of the photovoltaic bracket, which causes the inclined beam to sink, the support height of the purlin to the photovoltaic module by the first adjusting nut can adjust the inclination angle of the photovoltaic module, thereby ensuring that the inclination angle of the photovoltaic module is consistent with the original design installation inclination angle, adapting to the impact of uneven settlement of the foundation, and ensuring the overall benefits of the photovoltaic power station. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 A schematic diagram of the structure of a photovoltaic bracket with adjustable purlin support height provided in an optional embodiment of the utility model;

[0029] Figure 2 for Figure 1 A schematic diagram of the local enlarged structure at II in the middle;

[0030] Figure 3 for Figure 2 A cross-sectional view along line III-III;

[0031] Figure 4 for Figure 2 Sectional view along line IV-IV.

[0032] icon:

[0033] 10-photovoltaic support; 12-photovoltaic module;

[0034] 100-front column; 110-front upper column; 120-front lower column; 130-front waterproof gasket; 140-front diagonal brace connecting hoop;

[0035] 200-rear column; 210-rear upper column; 220-rear lower column; 230-rear waterproof gasket; 240-rear diagonal brace connection hoop;

[0036] 300- inclined beam;

[0037] 410-first screw rod; 411-first nut; 412-first gasket;

[0038] 420-first adjusting nut; 421-first upper nut; 422-first lower nut;

[0039] 500-purlin; 510-upper edge plate; 520-web plate; 530-lower edge plate;

[0040] 600-purlin connector; 610-first connecting plate; 620-second connecting plate;

[0041] 710-second screw rod; 711-second nut; 712-second gasket;

[0042] 720-second adjusting nut; 721-second upper nut; 722-second lower nut;

[0043] 810-first fastening nut; 820-second fastening nut;

[0044] 910-front diagonal brace; 920-rear diagonal brace; 930-column foot plate. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0046] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0048] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model 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 utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0049] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0050] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 indirectly connected 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.

[0051] See also Figure 1 to Figure 4 The embodiment of the utility model provides a photovoltaic support 10 with adjustable purlin support height, and the photovoltaic support 10 is used to install a photovoltaic module 12. The photovoltaic support 10 includes a front column 100, a rear column 200, an inclined beam 300, a first screw rod 410, a purlin 500 and a first adjustment nut 420. Among them, the top ends of the front column 100 and the rear column 200 are respectively connected to the inclined beam 300; the first screw rod 410 passes through the inclined beam 300 and protrudes from the inclined beam 300. The purlin 500 is used to be connected to the photovoltaic module 12, and is fastened to the portion of the first screw rod 410 protruding from the inclined beam 300 through the first adjustment nut 420. The first adjustment nut 420 can adjust the fastening position relative to the first screw rod 410, thereby adjusting the support height of the purlin 500 to the photovoltaic module 12 to adjust the inclination angle of the photovoltaic module 12.

[0052] The photovoltaic support 10 can adjust the support height of the purlin 500 to the photovoltaic assembly 12 by adjusting the fastening position of the first adjusting nut 420 relative to the first screw 410, thereby adjusting the inclination angle of the photovoltaic assembly 12. In the case where the front column 100 or the rear column 200 of the photovoltaic support 10 is unevenly settled due to uneven settlement of the foundation, causing the inclined beam 300 to sink, the support height of the purlin 500 to the photovoltaic assembly 12 is adjusted by the first adjusting nut 420, so as to adjust the inclination angle of the photovoltaic assembly 12, thereby ensuring that the inclination angle of the photovoltaic assembly 12 is consistent with the original design installation inclination angle, adapting to the impact of uneven settlement of the foundation, and ensuring the overall benefits of the photovoltaic power station.

[0053] It should be noted that in the photovoltaic bracket 10 provided in the embodiment of the utility model, it can be considered that the first screw rod 410 is an extended screw rod, so that the first screw rod 410 passes through the inclined beam 300 and the part protruding from the inclined beam 300 is longer, and it can be considered that a space is reserved for the first adjusting nut 420 to adjust the fastening position. The support height of the purlin 500 can be adjusted by the fastening position of the first adjusting nut 420, thereby adjusting the inclination angle of the photovoltaic module 12. In uneven settlement plant areas, the connection method of adjusting the support height of the purlin 500 by the first adjusting nut 420 is more conducive to on-site installation and later operation and maintenance adjustment. At the same time, the adjustment method is simple and convenient, and the economy is high.

[0054] In an optional embodiment, the height of the first screw rod 410 protruding from the inclined beam 300 is 5 to 10 cm. In other words, the reserved height for the first adjusting nut 420 to adjust is 5 to 10 cm, which reserves enough adjustment space to facilitate adjusting the supporting height of the purlin 500 and ensure the inclination angle of the photovoltaic module 12.

[0055] In addition, the first screw rod 410 has a first nut 411 and is sleeved with a first gasket 412 . The first screw rod 410 passes through the inclined beam 300 , and the first gasket 412 is pressed between the first nut 411 and the inclined beam 300 .

[0056] In addition, it should be noted that the number of purlins 500, first screw rods 410 and first adjustment nuts 420 are all correspondingly multiple, and the multiple purlins 500 are arranged in sequence and spaced apart along the length direction of the inclined beam 300, and are fastened to the corresponding first screw rods 410 on the protruding part of the inclined beam 300 through the corresponding first adjustment nuts 420.

[0057] In this way, the support heights of multiple purlins 500 along the length direction of the inclined beam 300 can be adjusted by the first adjusting nut 420. Regardless of whether the front column 100 or the rear column 200 sinks, the support heights of different purlins 500 can be easily adjusted to ensure the inclination angle of the photovoltaic module 12.

[0058] In this embodiment, optionally, the number of the purlins 500, the number of the first screw rods 410 and the number of the first adjusting nuts 420 are all four, and the four purlins 500 are distributed in sequence from south to north.

[0059] In an optional embodiment, the first adjusting nut 420 includes a first upper nut 421 and a first lower nut 422. The first upper nut 421 and the first lower nut 422 are threadedly matched with the first screw rod 410, and the purlin 500 is at least partially fastened between the first upper nut 421 and the first lower nut 422.

[0060] When adjusting, the adjustment can be made according to the actual inclination angle. As an example, when the front column 100 sinks unevenly, the inclination angle of the inclined beam 300 increases, and the position of the south purlin 500 is kept unchanged. The first lower nut 422 of the north purlin 500 is first loosened downward, and the first upper nut 421 is adjusted downward, so that the purlin 500 sinks until the photovoltaic module 12 reaches the original design inclination angle, and then the first lower nut 422 is tightened. When the rear column 200 sinks unevenly, the inclination angle of the inclined beam 300 decreases, and the position of the south purlin 500 is kept unchanged. The first upper nut 421 of the north purlin 500 is first loosened upward, and then the first lower nut 422 is adjusted upward, so that the purlin 500 is lifted, and the first upper nut 421 is tightened until the photovoltaic module 12 reaches the original design inclination angle. When the uneven settlement height is too large, the position of the purlin 500 of the photovoltaic bracket 10 can also be adjusted by comprehensively adjusting the support height of the four purlins 500. In this way, the inclination angle of the photovoltaic assembly 12 can be adjusted to the original design inclination angle according to the actual settlement situation, and the adjustment is more convenient and quick.

[0061] In an optional embodiment, the purlin 500 includes an upper edge plate 510, a web plate 520 and a lower edge plate 530. One side of the upper edge plate 510 is connected to one side of the web plate 520, and the other side of the web plate 520 is connected to one side of the lower edge plate 530. The upper edge plate 510 is used for connecting the photovoltaic module 12, and the lower edge plate 530 is fastened between the first upper nut 421 and the first lower nut 422. In this way, the upper edge plate 510, the web plate 520 and the lower edge plate 530 are connected to form a C-shaped purlin 500, the first screw 410 passes through the lower edge plate 530 and extends into the C-shaped inner cavity of the purlin 500, the first upper nut 421 and the first lower nut 422 fasten the lower edge plate 530 between the first upper nut 421 and the first lower nut 422, and the position of the lower edge plate 530 can be adjusted conveniently by the first upper nut 421 and the first lower nut 422, thereby adjusting the support height of the purlin 500.

[0062] In addition, in order to improve the structural strength of the purlin 500, in this embodiment, optionally, the photovoltaic bracket 10 may further include a purlin connector 600, a second adjustment nut 720 and a second screw 710. The second screw 710 passes through the oblique beam 300 and protrudes from the oblique beam 300. The purlin connector 600 is connected to the purlin 500 and is fastened to the portion of the second screw 710 protruding from the oblique beam 300 through the second adjustment nut 720. The second adjustment nut 720 can adjust the fastening position relative to the second screw 710.

[0063] In this way, on the one hand, the purlin connector 600 can strengthen the purlin 500. On the other hand, the position of the purlin connector 600 can be adjusted by adjusting the fastening position of the second adjusting nut 720 relative to the second screw 710. Since the purlin connector 600 is connected to the purlin 500, the supporting height of the purlin 500 for the photovoltaic component 12 can be assisted to adjust, so as to ensure that the inclination angle of the photovoltaic component 12 is consistent with the original design installation inclination angle.

[0064] In this embodiment, the number of the purlin connectors 600 , the second adjusting nuts 720 and the second screw rods 710 is plural and corresponds to the number of the purlins 500 , thereby ensuring that each purlin 500 is connected to a purlin connector 600 .

[0065] In addition, it should be noted that it can be considered that the second screw rod 710 is an extended screw rod, so that the second screw rod 710 passes through the inclined beam 300 and the part protruding from the inclined beam 300 is longer. It can be considered that space is reserved for the second adjusting nut 720 to adjust the fastening position. The position of the purlin connector 600 can be adjusted through the fastening position of the second adjusting nut 720 to assist in adjusting the supporting height of the purlin 500, thereby achieving the adjustment of the inclination angle of the photovoltaic module 12.

[0066] Optionally, the length of the second screw rod 710 is the same as the length of the first screw rod 410. The height of the second screw rod 710 protruding from the oblique beam 300 is also the same as the height of the first screw rod 410 protruding from the oblique beam 300. In this embodiment, the height of the first screw rod 410 and the second screw rod 710 protruding from the oblique beam 300 is 5 to 10 cm, which reserves sufficient adjustment space for the first adjustment nut 420 and the second adjustment nut 720, making it easy to adjust the position of the purlin connector 600 and the purlin 500, thereby adjusting the support height of the purlin 500 and ensuring the inclination angle of the photovoltaic module 12.

[0067] In addition, the second screw rod 710 has a second nut 711 and is sleeved with a second gasket 712 . The second screw rod 710 passes through the inclined beam 300 , and the second gasket 712 is pressed between the second nut 711 and the inclined beam 300 .

[0068] In an optional embodiment, the second adjusting nut 720 includes a second upper nut 721 and a second lower nut 722. The second upper nut 721 and the second lower nut 722 are both threadedly matched with the second screw rod 710, and the purlin connector 600 is at least partially fastened between the second upper nut 721 and the second lower nut 722.

[0069] It should be noted that the position adjustment method of the second upper nut 721 and the second lower nut 722 for the purlin connector 600 is similar to the position adjustment method of the first upper nut 421 and the first lower nut 422 for the purlin 500. Since the purlin connector 600 is connected to the purlin 500, when the purlin 500 is adjusted, the first upper nut 421 and the first lower nut 422, as well as the second upper nut 721 and the second lower nut 722 can be adjusted at the same time. As an example, after the current column 100 sinks unevenly, the inclination angle of the inclined beam 300 increases, and the position of the south purlin 500 is kept unchanged. First, the first lower nut 422 of the north purlin 500 and the second lower nut 722 of the corresponding purlin connector 600 are loosened downward, and then the first upper nut 421 and the second upper nut 721 are adjusted downward to make the purlin 500 sink, and then the first lower nut 422 and the second lower nut 722 are tightened until the photovoltaic module 12 reaches the original design inclination angle. When the rear column 200 sinks unevenly, the inclination angle of the inclined beam 300 is lowered, and the position of the south purlin 500 is kept unchanged. First, the first upper nut 421 of the north purlin 500 and the second upper nut 721 of the corresponding purlin connector 600 are loosened upwards, and then the first lower nut 422 and the second lower nut 722 are adjusted upwards, so that the purlin 500 is lifted, until the photovoltaic module 12 reaches the original design inclination angle, and then the first upper nut 421 and the second upper nut 721 are tightened. When the uneven settlement height is too large, the position of the purlin 500 of the photovoltaic bracket 10 can also be adjusted by comprehensively adjusting the support height of the four purlins 500. In this way, the inclination angle of the photovoltaic module 12 can be adjusted to the original design inclination angle according to the actual settlement situation, and the adjustment is more convenient and quick.

[0070] In an optional embodiment, the purlin connector 600 includes a first connecting plate 610 and a second connecting plate 620. One side of the first connecting plate 610 is connected to one side of the second connecting plate 620, and the first connecting plate 610 is detachably connected to the purlin 500. The second connecting plate 620 is fastened between the second upper nut 721 and the second lower nut 722.

[0071] In this way, the first connecting plate 610 and the second connecting plate 620 are connected to form an L-shaped purlin connector 600, the second screw rod 710 passes through the second connecting plate 620, and the second upper nut 721 and the second lower nut 722 fasten the second connecting plate 620 between the second upper nut 721 and the second lower nut 722, so that the position of the second connecting plate 620 can be adjusted conveniently by the second upper nut 721 and the second lower nut 722, thereby adjusting the position of the purlin connector 600.

[0072] In order to make the connection between the inclined beam 300 and the first screw rod 410 and the second screw rod 710 more secure, the photovoltaic bracket 10 also includes a first fastening nut 810 and a second fastening nut 820. The first screw rod 410 and the first fastening nut 810 are threadedly matched to fasten the inclined beam 300 between the first nut 411 of the first screw rod 410 and the first fastening nut 810. The second screw rod 710 and the second fastening nut 820 are threadedly matched to fasten the inclined beam 300 between the second nut 711 of the second screw rod 710 and the second fastening nut 820.

[0073] In addition, in an optional embodiment, the photovoltaic bracket 10 may include a front diagonal brace 910, a rear diagonal brace 920 and a plurality of column foot plates 930, the front column 100 may include a front upper column 110, a front lower column 120, a front waterproof gasket 130 and a front diagonal brace connecting clamp 140, and the rear column 200 may include a rear upper column 210, a rear lower column 220, a rear waterproof gasket 230 and a rear diagonal brace connecting clamp 240. The upper end of the front upper column 110 is hinged to the inclined beam 300, and the lower end is nested and connected to the upper end of the front lower column 120. The lower end of the front lower column 120 is connected to the column foot bottom plate 930. The front waterproof gasket 130 is arranged between the front upper column 110 and the front lower column 120. The front oblique support connecting hoop 140 is connected to the front lower column 120. One end of the front oblique support 910 is hinged to the front oblique support connecting hoop 140, and the other end is hinged to the oblique beam 300. The upper end of the rear upper column 210 is hinged to the inclined beam 300, and the lower end is nested and connected to the upper end of the rear lower column 220. The lower end of the rear lower column 220 is connected to the column foot bottom plate 930. The rear waterproof gasket 230 is arranged between the rear upper column 210 and the rear lower column 220. The rear oblique support connection hoop 240 is connected to the rear lower column 220. One end of the rear oblique support 920 is hinged to the rear oblique support connection hoop 240, and the other end is hinged to the oblique beam 300. In this way, the photovoltaic bracket 10 can form a good supporting effect.

[0074] In summary, the purlin 500 provided in the embodiment of the utility model supports a photovoltaic support 10 with adjustable height. By adjusting the fastening position of the first adjusting nut 420 relative to the first screw 410, the support height of the purlin 500 for the photovoltaic assembly 12 can be adjusted, thereby adjusting the inclination angle of the photovoltaic assembly 12. In the case where the uneven settlement of the foundation causes the uneven settlement of the front column 100 or the rear column 200 of the photovoltaic support 10 and causes the inclined beam 300 to sink, the support height of the purlin 500 for the photovoltaic assembly 12 is adjusted by the first adjusting nut 420, so as to adjust the inclination angle of the photovoltaic assembly 12, thereby ensuring that the inclination angle of the photovoltaic assembly 12 is consistent with the original design installation inclination angle, adapting to the influence of uneven settlement of the foundation, and ensuring the overall benefits of the photovoltaic power station.

[0075] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A photovoltaic support with adjustable purlin support height, characterized in that: It comprises a front column (100), a rear column (200), an inclined beam (300), a first screw rod (410), a purlin (500) and a first adjusting nut (420); The top ends of the front column (100) and the rear column (200) are respectively connected to the inclined beam (300); the first screw rod (410) passes through the inclined beam (300) and protrudes from the inclined beam (300); the purlin (500) is used to be connected to the photovoltaic module (12), and is fastened to the portion of the first screw rod (410) protruding from the inclined beam (300) through the first adjusting nut (420); the first adjusting nut (420) can adjust the fastening position relative to the first screw rod (410), thereby adjusting the supporting height of the purlin (500) for the photovoltaic module (12) to adjust the inclination angle of the photovoltaic module (12).

2. The photovoltaic support with adjustable purlin support height according to claim 1, characterized in that: The first adjusting nut (420) comprises a first upper nut (421) and a first lower nut (422); The first upper nut (421) and the first lower nut (422) are both threadedly matched with the first screw rod (410), and the purlin (500) is at least partially fastened between the first upper nut (421) and the first lower nut (422).

3. The photovoltaic support with adjustable purlin support height according to claim 2, characterized in that: The purlin (500) comprises an upper edge plate (510), a web plate (520) and a lower edge plate (530); One side of the upper edge plate (510) is connected to one side of the web plate (520), and the other side of the web plate (520) is connected to one side of the lower edge plate (530); The upper edge plate (510) is used for connecting the photovoltaic module (12), and the lower edge plate (530) is fastened between the first upper nut (421) and the first lower nut (422).

4. The photovoltaic support with adjustable purlin support height according to claim 3, characterized in that: The upper edge plate (510), the web plate (520) and the lower edge plate (530) are connected to form a C-shaped purlin (500).

5. The photovoltaic support with adjustable purlin support height according to claim 1, characterized in that: It also includes a purlin connector (600), a second adjusting nut (720) and a second screw rod (710); The second screw rod (710) passes through the inclined beam (300) and protrudes from the inclined beam (300); the purlin connecting member (600) is connected to the purlin (500) and is fastened to the portion of the second screw rod (710) protruding from the inclined beam (300) through the second adjusting nut (720); the second adjusting nut (720) can adjust the fastening position relative to the second screw rod (710).

6. The photovoltaic support with adjustable purlin support height according to claim 5, characterized in that: The second adjusting nut (720) comprises a second upper nut (721) and a second lower nut (722); The second upper nut (721) and the second lower nut (722) are both threadedly matched with the second screw rod (710), and the purlin connector (600) is at least partially fastened between the second upper nut (721) and the second lower nut (722).

7. The photovoltaic support with adjustable purlin support height according to claim 6, characterized in that: The purlin connector (600) comprises a first connecting plate (610) and a second connecting plate (620); One side of the first connecting plate (610) is connected to one side of the second connecting plate (620), and the first connecting plate (610) and the purlin (500) are detachably connected; The second connecting plate (620) is fastened between the second upper nut (721) and the second lower nut (722).

8. The photovoltaic support with adjustable purlin support height according to claim 5, characterized in that: The heights of the first screw rod (410) and the second screw rod (710) protruding from the inclined beam (300) are both 5 to 10 cm.

9. The photovoltaic support with adjustable purlin support height according to claim 5, characterized in that: Also includes a first fastening nut (810) and a second fastening nut (820); The first screw rod (410) is threadably matched with the first fastening nut (810) so as to fasten the inclined beam (300) between the first nut (411) of the first screw rod (410) and the first fastening nut (810); The second screw rod (710) is threadedly matched with the second fastening nut (820) to fasten the inclined beam (300) between the second nut (711) of the second screw rod (710) and the second fastening nut (820).

10. The photovoltaic support with adjustable purlin support height according to claim 1, characterized in that: The number of the purlin (500), the first screw rod (410) and the first adjusting nut (420) are all correspondingly multiple, and the multiple purlins (500) are arranged in sequence and spaced apart along the length direction of the inclined beam (300), and are fastened to the corresponding first screw rod (410) on the part protruding from the inclined beam (300) through the corresponding first adjusting nut (420).

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