Plane-mounted photovoltaic power station and ballast supporting structure thereof

Abstract

The utility model discloses a plane installation photovoltaic power station and a ballast support structure thereof, belonging to the photovoltaic technology field, the ballast support structure comprises a ballast support assembly and a support leg assembly, the ballast support assembly comprises a ballast base, the support leg assembly comprises at least two support legs arranged along the longitudinal direction of the ballast base, and the ballast support assembly comprises a ballast base. The supporting legs and the ballast base are preassembled together, and the supporting legs have a storage state in which the supporting legs are stored in the ballast base and a supporting state in which the supporting legs extend outwards from the ballast base and support the photovoltaic module. According to the utility model, through preassembling of the supporting legs and the ballast base, packaging and transportation are facilitated, the field installation efficiency is improved, before packaging and transportation, the supporting legs can be stored in the ballast base through preassembling of the supporting legs and the ballast base, the occupied space is small, and packaging and transportation of the photovoltaic support component are facilitated; when the photovoltaic module is installed on a construction site, the supporting legs extend outwards from the ballast base, and then the photovoltaic module is installed through the pressing block assembly.

Description

[Technical Field]

[0001] This utility model belongs to the field of photovoltaic technology, specifically relating to a photovoltaic power station installed on a flat roof. [Background Technology]

[0002] Currently, there are many mounting brackets and components for installing photovoltaic systems on flat roofs. For example, Chinese utility model patent CN 208143146U discloses a flat roof photovoltaic bracket system, including a support component and a first connector for connecting photovoltaic modules to the support component. The support component is composed of several rectangular cement blocks with mounting grooves on all six sides. Each photovoltaic module is connected at both ends to at least one cement block serving as a basic support component through the first connector. Adjacent photovoltaic modules can be connected to the same cement block through the same first connector. Each cement block serving as a basic support component can be connected to K cement blocks through a second connector, where K>=0, and the K cement blocks are freely connected to the cement block base component.

[0003] Existing technology for installing photovoltaic systems on flat roofs requires on-site assembly of ballast bases and legs, resulting in numerous installation components and low installation efficiency. [Utility Model Content]

[0004] To address the shortcomings of existing technologies, the present invention aims to provide a planar photovoltaic power station and its ballast support structure, thereby resolving the issue of low construction efficiency caused by the large number of photovoltaic support components in existing technologies.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] First, this utility model provides a ballast support structure for a planar photovoltaic power station, including a ballast support assembly and a leg assembly. The ballast support assembly includes a ballast base, and the leg assembly includes at least two legs arranged longitudinally along the ballast base. The legs are pre-assembled with the ballast base, and the legs have a retracted state where they are housed in the ballast base and a supported state where they extend outward from the ballast base and support the photovoltaic module.

[0007] Preferably, the ballast base is provided with a longitudinally extending mounting groove, and the bottom of the support leg is connected to the mounting groove with pre-installed bolts. The support leg is stored in the mounting groove in the retracted state.

[0008] Preferably, the bottom of the support leg is provided with a through hole, and the two transverse side walls of the mounting groove are provided with bolt holes, and the pre-installed bolt passes through the bolt holes and the through hole.

[0009] Preferably, the pre-installed bolt includes a screw and a square nut connected to the screw, and the ballast base has a longitudinal groove on one side of its transverse direction, with the square nut located in the longitudinal groove.

[0010] Preferably, the outrigger assembly includes a front outrigger and a rear outrigger arranged correspondingly in the longitudinal front-rear direction, and the bottom of the front outrigger and the rear outrigger are respectively provided with a first hinged hollow column and a second hinged hollow column that are hinged to the pre-installed bolts.

[0011] Preferably, the second hinged hollow column is located on the bottom front side of the rear support leg, thereby forming an arc transition surface on the bottom front side, and the rear support leg has a bottom plane on the rear side of the second hinged hollow column.

[0012] Preferably, at least two ballast bases are spliced ​​together longitudinally, and a connecting fastener is provided between two adjacent ballast bases, the connecting fastener being fastened to the ballast base.

[0013] Preferably, the connecting fastener includes an elastically deformable part that snaps into the mounting groove and a fastening groove that engages with the top of the side wall of the mounting groove.

[0014] Preferably, the ballast support assembly further includes a load component that is loaded on the ballast base.

[0015] In addition, this utility model also provides a planar photovoltaic power station, including the aforementioned ballast support structure.

[0016] The present invention adopts the above technical solution and has the following beneficial effects:

[0017] 1. Since the ballast support assembly is placed directly on a flat surface, such as a flat roof, no fasteners are required for installation. The leg assembly includes at least two legs arranged longitudinally along the ballast base. These legs are pre-assembled with the ballast base and have two states: one retracted into the ballast base, and the other extending upwards from the ballast base to support the photovoltaic modules. This pre-assembly of the legs with the ballast base facilitates packaging and transportation and improves on-site installation efficiency. Before packaging and transportation, the legs can be retracted into the ballast base, occupying minimal space and simplifying the packaging and transportation of the photovoltaic support components. During on-site installation, the legs extend outwards from the ballast base, and the photovoltaic modules are then installed using the clamping assembly, eliminating the need for additional assembly of the legs and ballast base, thus improving on-site installation efficiency.

[0018] 2. The ballast base has a longitudinally extending mounting groove. The bottom of the support leg is connected to the mounting groove using pre-installed bolts. The support leg is stored in the mounting groove in its retracted state. Before packaging and transportation, the support leg is stored in the ballast base through pre-assembly, occupying little space and facilitating the packaging and transportation of photovoltaic support components. During on-site installation, the support leg extends outward from the ballast base, and then the photovoltaic module is installed using the clamping assembly. There is no need for additional assembly of the support leg and ballast base, improving installation efficiency on the construction site.

[0019] 3. The bottom of the outrigger is provided with a through hole, and the transverse side walls of the mounting groove are provided with corresponding bolt holes. The pre-installed bolts pass through the bolt holes and the through holes. During shipment, both the front and rear outriggers are inserted into the mounting grooves of the ballast base. After arriving at the site, the front and rear outriggers are rotated around the pre-installed bolts respectively. After adjusting the installation angle, the pre-installed bolts are tightened.

[0020] 4. The pre-installed bolts include screws and square nuts connected to the screws. A longitudinal groove is provided on one side of the ballast base, and the square nut is positioned within the longitudinal groove. After adjusting the installation angle, the pre-installed bolts are tightened. Because the square nut is locked in the longitudinal groove and will not rotate, the pre-installed bolts can be easily tightened.

[0021] 5. The outrigger assembly includes a front outrigger and a rear outrigger arranged correspondingly in the longitudinal front-rear direction. The bottom of the front outrigger and the rear outrigger are respectively provided with a first hinged hollow column and a second hinged hollow column that are hinged to the pre-installed bolts. The second hinged hollow column is located on the front side of the bottom of the rear outrigger, thereby forming an arc transition surface on the front side of the bottom. The rear outrigger has a bottom plane on the rear side of the second hinged hollow column. The arc transition surface facilitates the forward rotation of the rear outrigger and its retraction into the mounting groove.

[0022] 6. For roofs with a long longitudinal length, multiple rows of photovoltaic modules are installed. Correspondingly, at least two ballast bases are spliced ​​longitudinally, and connecting fasteners are provided between adjacent ballast bases. The connecting fasteners are fastened to the ballast bases. No fasteners are required for fixation, which facilitates on-site installation.

[0023] 7. The connecting fastener includes an elastic deformation part that snaps into the mounting groove and a fastening groove that engages with the top of the side wall of the mounting groove. During installation, the elastic deformation part snaps into the mounting groove of the adjacent ballast base through its own elasticity. When the pre-installed bolts are finally tightened, the connecting fastener is close to the pre-installed bolts, which will exert a force on the connecting fastener, further increasing its fixing capacity.

[0024] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and accompanying drawings. [Attached Image Description]

[0025] The utility model will be further described below with reference to the accompanying drawings:

[0026] Figure 1 This is a schematic diagram of the structure of the photovoltaic power station of this utility model;

[0027] Figure 2 A schematic diagram of a structure in which the outriggers are pre-installed on the ballast base and in a supported state;

[0028] Figure 3 A schematic diagram of a structure in which the outriggers are pre-installed on the ballast base and in a supported state;

[0029] Figure 4 A schematic diagram of a structure in which the outriggers are pre-installed on the ballast base and in a stowed state;

[0030] Figure 5 This is a schematic diagram of the pre-assembled structure of the outriggers and ballast base;

[0031] Figure 6 This is a schematic diagram of the rear support leg.

[0032] Figure 7 This is a schematic diagram of the connection structure between the front outrigger and the ballast base.

[0033] Figure 8 This is a structural diagram of two adjacent ballast base locations;

[0034] Figure 9 This is a structural diagram of two adjacent ballast base locations;

[0035] Figure 10 This is a schematic diagram of the fastening structure connecting the fastener and the mounting groove;

[0036] Figure 11 This is a schematic diagram of the structure of a single-sided pressure block assembly;

[0037] Figure 12 This is a schematic diagram of the structure of the double-sided pressure block assembly;

[0038] Reference numerals: Ballast support assembly 1, ballast base 11, mounting groove 111, longitudinal slot 112, extension surface 113, load component 12, connecting fastener 13, elastic deformation part 131, fastening groove 132, side limiting part 1321, upper limiting part 1322, V-shaped part 1323, pre-installed bolt 14, screw 141, square nut 142; outrigger assembly 2, rear outrigger 21, second hollow hinge column 211, arc transition surface 2111, second mounting slot 212, bottom flat Surface 215, front support leg 22, first mounting slot 221, connecting plate 222, first hollow hinge column 223; pressure block assembly 3, single-sided pressure block assembly 31, lower pressure block 311, mounting buckle 3111, upper pressure block 312, pressing part 3121, mounting part 3122, limiting side plate 3123, upper vertical section 31231, oblique connecting section 31232, lower vertical section 31233, pressure block bolt 313, height adjustment plate 314, double-sided pressure block assembly 32, photovoltaic module 4.

Detailed Implementation Methods

[0039] The technical solutions of the present utility model will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present utility model.

[0040] Those skilled in the art will understand that, without conflict, the features in the following embodiments and implementations can be combined with each other.

[0041] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. For example, terms such as "upper," "lower," "left," and "right" that indicate orientation or positional relationship are based solely on the orientation or positional relationship shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device / component referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention.

[0042] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0043] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0044] Reference Figures 1 to 12 As shown, this embodiment provides a planar photovoltaic power station, including a photovoltaic module array formed by multiple photovoltaic modules 4 arranged in a rectangular array, and a photovoltaic support for mounting the photovoltaic modules. The photovoltaic support includes:

[0045] Ballast support assembly 1 has at least two rows of ballast support assemblies arranged side by side in the transverse direction, wherein each pair of ballast support assemblies supports one row of photovoltaic modules. The ballast support assembly 1 includes a ballast base 11 and a load component 12 loaded on the ballast base.

[0046] The support leg assembly 2 includes at least two support legs arranged longitudinally along the ballast base 11. The support legs are pre-assembled with the ballast base 11, and the support legs have a retracted state in which they are housed in the ballast base and a supported state in which they extend outward from the ballast base and support the photovoltaic module.

[0047] The clamping assembly 3 is used to fix the photovoltaic module 4 to the support leg.

[0048] For the aforementioned photovoltaic support structure, the ballast support assembly and the leg assembly work together as a ballast support structure, and the photovoltaic modules are then installed on the ballast support structure through the clamping block assembly.

[0049] Since the ballast support assembly is placed directly on the flat surface and stable installation is achieved through the counterweight of the load-bearing components, no fasteners are required. The most important components of the aforementioned photovoltaic support system are the ballast support assembly and the leg assembly. In this embodiment, the legs are pre-assembled with the ballast base before packaging and transportation, minimizing space usage and facilitating the packaging and transportation of the photovoltaic support components. During on-site installation, the legs extend outward from the ballast base, and the photovoltaic modules are then installed using the clamping assembly. No additional assembly of the legs and ballast base is required, improving on-site installation efficiency.

[0050] In some embodiments, the ballast base 11 is provided with a longitudinally extending mounting groove 111, and the bottom of the support leg is connected to the mounting groove by a pre-installed bolt 14. The support leg is stored in the mounting groove in the retracted state.

[0051] The load-bearing components can be precast cement blocks. The precast cement blocks are rectangular in shape and their width is smaller than the width of the mounting groove. They can be directly installed into the mounting groove, specifically by stacking multiple layers inside the mounting groove. Of course, most of the cement blocks will be higher than the mounting groove, but lower than the bottom surface of the photovoltaic module at the location.

[0052] Specifically, the bottom of the support leg is provided with a through hole, and the two transverse side walls of the mounting groove are provided with bolt holes, and the pre-installed bolt 14 passes through the bolt holes and the through hole.

[0053] In some embodiments, the pre-installed bolt 14 includes a screw 141 and a square nut 142 connected to the screw. A longitudinal groove 112 is provided on one lateral side of the ballast base 11, and the square nut 142 is disposed within the longitudinal groove. During shipment, both the front and rear outriggers are inserted into the mounting grooves of the ballast base. Upon arrival at the site, the front and rear outriggers are rotated around the pre-installed bolt to adjust the installation angle, and then the pre-installed bolt is tightened. Since the square nut is inserted into the longitudinal groove and will not rotate, the pre-installed bolt can be tightened conveniently. Furthermore, the screw 141 is preferably an internal hexagonal screw for easy tightening of the pre-installed bolt. Additionally, on the other lateral side of the ballast base 11, i.e., the side opposite the longitudinal groove 112, an outwardly extending extension surface 113 is provided at the bottom to improve the structural strength of the ballast base and increase its support area.

[0054] For roofs with a long longitudinal length, multiple rows of photovoltaic modules are installed. Correspondingly, each row of ballast support components includes at least two ballast bases 11 spliced ​​along the longitudinal direction. A connecting fastener 13 is provided between two adjacent ballast bases 11, and the connecting fastener 13 is fastened to the ballast base 11. No fasteners are required for fixation, which facilitates on-site installation.

[0055] Specifically, the connecting fastener 13 includes an elastically deformable part 131 that snaps into the mounting groove and a fastening groove 132 that engages with the top of the side wall of the mounting groove. The elastically deformable part 131 has an inverted isosceles trapezoidal structure with its upper base at the bottom and a gap between it and the bottom wall of the mounting groove. The fastening groove 132 has a side limiting part 1321, an upper limiting part 1322, and a V-shaped part 1323. The side limiting part 1321 engages with the inner side of the top of the side wall of the mounting groove, and the inverted isosceles trapezoidal structure of the elastically deformable part 131 deforms to ensure a tight fit between the side limiting part 1321 and the inner side of the side wall of the mounting groove. The upper limiting part 1322 engages with the top of the side wall of the mounting groove, and the V-shaped part 1323 connects to the upper limiting part 1322. During installation, the elastic deformation part 131 is inserted into the mounting groove of the adjacent ballast base through its own elasticity. When the pre-installed bolts are finally tightened, since the connecting fastener 13 and the pre-installed bolts 14 are close to each other, a force will be generated on the connecting fastener, which will further increase its fixing ability.

[0056] Specifically, the support leg assembly includes a rear support leg 21 supporting the lower rear side of the photovoltaic module and a front support leg 22 supporting the lower front side of the photovoltaic module, with the rear support leg being higher than the front support leg. This arrangement causes the photovoltaic module to be lower in the front and higher in the back, creating an angle between the photovoltaic module and the plane, forming a sloping surface facing the direction of sunlight. Because the bottom surface of the photovoltaic module does not need to be too high from the mounting plane, and the photovoltaic module has a standard area, only the front and rear support legs are needed for each photovoltaic module; no intermediate support legs are required.

[0057] The rear support leg 21 and the front support leg 22 are provided with mounting slots at their tops, and the pressure block assembly 3 is provided with mounting buckles that cooperate with the mounting slots. The mounting slot is a C-shaped slot with locking edges on opposite sides of its opening, namely the first locking edge on the front side and the second locking edge on the rear side of the opening.

[0058] like Figure 6 As shown, the rear support leg 21 is a hollow rectangular component with a hollow cavity extending through both sides. Connecting ribs connect the front and rear cavity walls. A mounting slope is provided at the top, corresponding to the tilt angle of the photovoltaic module, and a second mounting slot 212 is provided. A second hollow hinge post 211 is provided on the front bottom side, with a through hole at its center. Pre-installed bolts pass through this through hole. The second hinge post is located on the front bottom side of the rear support leg, forming an arc transition surface 2111. The rear support leg has a bottom plane 215 on the rear side of the second hinge post, where the arc transition surface facilitates forward rotation of the rear support leg and its retraction into the mounting slot.

[0059] like Figure 7 As shown, the front support leg is also a hollow rectangular component with a hollow cavity extending through both sides laterally. Connecting ribs connect the front and rear cavity walls. A first mounting slot 221 is provided at the top, which is also a C-shaped slot. A first and second retaining edges are provided on opposite sides of the opening, extending horizontally outwards. Therefore, the front and rear side walls of the first mounting slot 221 are T-shaped to increase the support area with the photovoltaic module frame. Additionally, a first hollow hinge post 223 is provided at the bottom of the front support leg, with a connecting plate 222 between the first mounting slot 221 and the first hollow hinge post 223. A large gap exists between the first hollow hinge post 223 and the mounting slot to facilitate rotation of the front support leg.

[0060] In this embodiment, a set of bolt holes is provided on the transverse side walls of the mounting groove corresponding to the installation position of the front outrigger, and multiple sets of bolt holes are provided on the transverse side walls of the mounting groove corresponding to the installation position of the rear outrigger. In this way, the rear outrigger can be adjusted to the front and rear installation positions of the mounting groove within a certain range, and only the corresponding bolt holes need to be selected.

[0061] like Figure 11 and Figure 12 As shown, the pressure block assembly includes a lower pressure block, an upper pressure block, and pressure block bolts. The bottom of the lower pressure block is provided with the mounting buckle, and the upper pressure block is provided with a pressing part that presses against the frame of the photovoltaic module. The pressure block bolts fix the upper and lower pressure blocks. The pressure block assembly can be divided into a single-sided pressure block assembly 31 and a double-sided pressure block assembly 32. The single-sided pressure block assembly 31 is located on the outer side of the horizontal row of photovoltaic modules and is connected to the photovoltaic module on only one side. Therefore, the upper pressure block is provided with a pressing part 3121 on one side. The double-sided pressure block assembly is located between two adjacent photovoltaic modules in the horizontal row of photovoltaic modules and is connected to the photovoltaic module on both sides. Therefore, the upper pressure block is provided with pressing parts on both horizontal sides.

[0062] like Figure 11 As shown, taking a single-sided pressing block assembly as an example, the single-sided pressing block assembly 31 includes a lower pressing block 311, an upper pressing block 312, and a pressing block bolt 313. The upper pressing block has a mounting part 3122 with an opening. The lower pressing block has a threaded hole. The pressing block bolt passes through the opening on the upper pressing block from top to bottom and connects with the threaded hole on the lower pressing block. The bottom of the lower pressing block has the aforementioned mounting buckle 3111. The mounting buckle has double-sided hooks, and its hook structure is similar to the second hook structure mentioned above. The upper pressing block of the single-sided pressing block assembly has a limiting side plate 3123 on the side opposite to the pressing part. The limiting side plate includes an upper vertical section 31231, a lower vertical section 31233, and an oblique connecting section 31232 connecting the upper vertical section and the lower vertical section. The lower vertical section abuts against the lateral outer side of the lower pressing block to ensure that the pressing part is pressed into the photovoltaic module frame A surface in a horizontal posture. In addition, single-sided pressure block modules also require the installation of height adjustment plates to accommodate different photovoltaic module installations. The structure of double-sided pressure block modules 32 is basically the same as that of single-sided pressure block modules, but the upper pressure block has pressing parts on both opposite sides, and the lower pressure block does not have a limiting side plate.

[0063] It is understandable that the aforementioned ballast base, legs, and pressure blocks can all be made of profiles, such as steel sections.

[0064] The above description is merely a specific embodiment of the utility model, but the scope of protection of the utility model is not limited thereto. Those skilled in the art should understand that the utility model includes, but is not limited to, the content described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of the utility model will be included within the scope of the claims.

Claims

1. A ballasted support structure for a flat mounted photovoltaic power plant, characterized in that, The device includes a ballast support assembly and a support leg assembly. The ballast support assembly includes a ballast base, and the support leg assembly includes at least two support legs arranged longitudinally along the ballast base. The support legs are pre-assembled with the ballast base, and the support legs have a retracted state where they are housed in the ballast base and a supported state where they extend outward from the ballast base and support the photovoltaic module.

2. The ballast support structure of claim 1, wherein, The ballast base is provided with a longitudinally extending mounting groove, and the bottom of the support leg is connected to the mounting groove with pre-installed bolts. The support leg is stored in the mounting groove in the retracted state.

3. The ballast support structure of claim 2, wherein, The bottom of the support leg is provided with a through hole, and the two transverse side walls of the mounting groove are provided with bolt holes, and the pre-installed bolts pass through the bolt holes and the through hole.

4. The ballast support structure of claim 3, wherein, The pre-installed bolts include screws and square nuts connected to the screws. The ballast base has a longitudinal groove on one side, and the square nut is located in the longitudinal groove.

5. The ballast support structure according to claim 2, characterized in that, The outrigger assembly includes a front outrigger and a rear outrigger arranged in a longitudinal front-rear direction. The bottom of the front outrigger and the rear outrigger are respectively provided with a first hinged hollow column and a second hinged hollow column that are hinged to the pre-installed bolts.

6. The ballast support structure of claim 5, wherein, The second hinged hollow column is located on the front side of the bottom of the rear support leg, thereby forming an arc transition surface on the front side of the bottom. The rear support leg has a bottom plane on the rear side of the second hinged hollow column.

7. The ballast support structure of claim 2, wherein, At least two ballast bases are spliced ​​together longitudinally, and a connecting fastener is provided between two adjacent ballast bases, the connecting fastener being fastened to the ballast base.

8. The ballast support structure of claim 7, wherein, The connecting fastener includes an elastically deformable part that snaps into the mounting groove and a fastening groove that engages with the top of the side wall of the mounting groove.

9. The ballast support structure of claim 1, wherein, The ballast support assembly also includes a load component that is loaded on the ballast base.

10. A flat-mounted photovoltaic power plant, characterized in that, Includes the ballast support structure as described in any one of claims 1 to 9.

Images