Photovoltaic support and photovoltaic system

Abstract

The present application relates to photovoltaic power generation technical field, disclose a kind of photovoltaic support and photovoltaic system.The photovoltaic support includes: beam assembly, including multiple main beams extending along the first direction and multiple secondary beams extending along the second direction, multiple main beams and multiple secondary beams are collectively enclosed multiple support frames, support frame is used to support photovoltaic module, the first direction is arranged at angle with the second direction;Drainage structure, located the upper surface of support frame and below photovoltaic module, drainage structure has opening and drainage channel being communicated with opening, opening is located the side of drainage structure towards photovoltaic module, drainage channel extends along the second direction;The lower surface of drainage structure is equipped with clamping protrusion, the upper surface of secondary beam is equipped with clamping groove, drainage structure is clamped by clamping protrusion and clamping groove, realize and connect with secondary beam.The drainage structure of the present application and secondary beam are connected by clamping protrusion and clamping groove, can improve the installation efficiency of both, and can enhance the connection stability of both.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic power generation technology, specifically to a photovoltaic bracket and a photovoltaic system. Background Technology

[0002] In a photovoltaic power generation system, a photovoltaic support structure is used to support photovoltaic modules. Its function is to securely install the photovoltaic modules on the roof, ground, or other load-bearing foundation, and to provide the photovoltaic modules with a specified installation tilt angle and load-bearing capacity to resist external loads such as wind and snow.

[0003] To prevent rainwater from corroding photovoltaic (PV) modules, causing water accumulation, or reducing power generation efficiency, drainage structures are typically installed on PV mounting systems to collect and drain rainwater flowing from the surface of the PV modules and their gaps. However, existing PV mounting systems often use independent connectors (such as clamps or jigs) to install the drainage structures onto the beams of the system. This installation method is not only cumbersome and inefficient, but also prone to detachment or displacement of the drainage structure under external loads such as wind, affecting the stability and safety of the system. Summary of the Invention

[0004] This invention provides a photovoltaic bracket and a photovoltaic system to solve the problems of low assembly efficiency and poor connection stability between drainage structures and photovoltaic brackets.

[0005] In a first aspect, the present invention provides a photovoltaic support structure, comprising: A beam assembly includes a plurality of main beams extending along a first direction and a plurality of secondary beams extending along a second direction. The plurality of main beams and the plurality of secondary beams together form a plurality of support frames, which are used to support photovoltaic modules. The first direction and the second direction are set at an angle. A drainage structure is located on the upper surface of the support frame and below the photovoltaic module. The drainage structure has an opening and a drainage channel communicating with the opening. The opening is located on the side of the drainage structure facing the photovoltaic module, and the drainage channel extends along the second direction. The lower surface of the drainage structure is provided with a snap-fit ​​protrusion, and the upper surface of the secondary beam is provided with a snap-fit ​​groove that cooperates with the snap-fit ​​protrusion. The drainage structure is connected to the secondary beam by snapping the snap-fit ​​protrusion with the snap-fit ​​groove.

[0006] Beneficial effects: By setting a snap-fit ​​protrusion at the bottom of the drainage structure and a snap-fit ​​groove at the corresponding position on the upper surface of the secondary beam, the present invention enables the drainage structure and the secondary beam to be snap-fitted together without the aid of separate connecting parts, simplifying the installation steps and improving on-site assembly efficiency.

[0007] Furthermore, after the drainage structure engages with the locking protrusion and locking groove, the sidewall of the locking groove restricts the upward tendency of the locking protrusion to detach and also limits its horizontal displacement. This means that even under upward external loads such as wind suction, the drainage structure can remain firmly held on the secondary beam, effectively preventing loosening or detachment. Simultaneously, since this invention does not require separate connectors, there are no assembly gaps or loosening allowances caused by connectors. The lower surface of the drainage structure and the upper surface of the secondary beam can always maintain a stable abutment fit, thus forming an integral structure. In this case, when the photovoltaic module bears external loads, the load is directly transferred to the secondary beam through the drainage structure, thereby avoiding connection failures caused by loosening or fatigue of connectors and enhancing the connection stability between the drainage structure and the secondary beam.

[0008] In one optional embodiment, the cross-sectional area of ​​the snap-fit ​​groove opening is smaller than the cross-sectional area of ​​the groove bottom, and / or, a first limiting groove is provided on the groove wall of the snap-fit ​​groove; the snap-fit ​​protrusion is adapted to the snap-fit ​​groove.

[0009] Beneficial Effects: This invention enhances the stability and pull-out resistance of the snap-fit ​​by setting the snap-fit ​​groove to a constricted structure with a groove opening cross-sectional area smaller than the groove bottom cross-sectional area, and / or by adding a first limiting groove on the groove wall of the snap-fit ​​groove, along with a matching snap-fit ​​protrusion. Specifically, the constricted structure allows the snap-fit ​​protrusion to be constrained by the groove wall at the groove opening. This not only limits the upward movement tendency of the snap-fit ​​protrusion but also restricts its horizontal displacement, effectively preventing the drainage structure from swaying or shifting relative to the secondary beam. When the first limiting groove is provided on the groove wall of the snap-fit ​​groove, a corresponding protrusion structure is provided on the snap-fit ​​protrusion. Therefore, the two work together to form an embedded mechanical interlock, further preventing the snap-fit ​​protrusion from coming out of the snap-fit ​​groove. Even under strong upward wind suction or continuous vibration load, the drainage structure can be firmly held on the secondary beam.

[0010] In one optional embodiment, the snap-fit ​​groove extends from the opening to the bottom of the snap-fit ​​groove. The snap-fit ​​groove includes a first groove segment and a second groove segment that are connected. The cross-sectional area of ​​the first groove segment is smaller than the cross-sectional area of ​​the second groove segment. A limiting step surface is formed at the connection between the first groove segment and the second groove segment.

[0011] Beneficial Effects: This invention, by setting the snap-fit ​​groove as a connected first and second groove segment, and making the cross-sectional area of ​​the first groove segment smaller than that of the second groove segment, allows a naturally formed limiting step surface at the connection between the first and second groove segments. In this way, when the snap-fit ​​protrusion engages with the snap-fit ​​groove, the limiting step surface and the corresponding part of the snap-fit ​​protrusion naturally form a stop fit, effectively preventing the snap-fit ​​protrusion from detaching from the groove. Even under strong upward wind suction or vibration loads, the drainage structure is unlikely to separate from the secondary beam. Simultaneously, the smaller cross-sectional area of ​​the first groove segment narrows the opening, providing horizontal constraint on the corresponding part of the snap-fit ​​protrusion, thus limiting the swaying of the drainage structure relative to the secondary beam. In this way, the drainage structure, through the snap-fit ​​protrusion and the snap-fit ​​groove of the secondary beam, forms a seamless, rigid connection. Its lower surface maintains tight contact with the upper surface of the secondary beam, jointly bearing and transmitting external loads. Therefore, without relying on independent connecting parts, the drainage structure and the beam assembly achieve integrated and coordinated stress distribution, effectively improving the connection stability and load-bearing capacity of both.

[0012] In one alternative embodiment, the upper surface of the secondary beam is recessed in a direction away from the drainage structure to form the snap-fit ​​groove, and at least one end of the snap-fit ​​groove penetrates the corresponding sidewall of the secondary beam along the second direction.

[0013] Beneficial effects: The snap-fit ​​groove of the present invention is directly formed by the recess on the upper surface of the secondary beam, which means that no additional connecting structure needs to be added to the secondary beam, simplifying the processing technology of the secondary beam. At the same time, along the second direction, at least one end of the snap-fit ​​groove penetrates the corresponding side wall of the secondary beam, so that the drainage structure can be pushed in as a whole from the end of the secondary beam along the second direction, without the need for segmented snap-fit ​​or the use of auxiliary tools, thereby improving on-site assembly efficiency.

[0014] In one alternative embodiment, along the first direction, at least one side of the drainage structure is provided with a downwardly extending connecting plate, the connecting plate being abutted against the sidewall of the adjacent secondary beam and connected by fasteners.

[0015] Beneficial Effects: This invention provides additional reinforcement to the connection between the drainage structure and the secondary beam by providing a downwardly extending connecting plate on at least one side of the drainage structure in the first direction, and connecting the connecting plate to the side wall of the adjacent secondary beam using fasteners. This provides a foundation for rapid positioning and initial fixation based on the snap-fit ​​protrusion and snap-fit ​​groove. Specifically, when the drainage structure is subjected to wind suction, vibration, or uneven loads, the fasteners can constrain the displacement of the connecting plate relative to the side wall of the secondary beam, thereby effectively suppressing the possible displacement of the snap-fit ​​protrusion within the snap-fit ​​groove and preventing loosening of the snap-fit ​​fit due to material creep or fatigue over long-term use. Simultaneously, the connecting plate extends downward along the side of the drainage structure and forms a close contact with the side wall of the secondary beam. Under the pre-tightening force of the fasteners, the two can maintain stable surface contact, thus firmly uniting the drainage structure and the secondary beam into a single unit. This approach retains the high efficiency and convenience of snap-fit ​​assembly while enhancing the redundancy of the connection structure and its resistance to lateral loads, simplifying the installation process while ensuring the long-term reliability of the drainage structure.

[0016] In one alternative embodiment, along the first direction, the connecting plates extending downward are provided on opposite sides of the drainage structure; the connecting plates are integrally formed with the drainage structure, and the sides of the pair of connecting plates away from each other are flush with the sidewalls of the adjacent drainage structure.

[0017] Beneficial Effects: This invention provides downwardly extending connecting plates on opposite sides of the drainage structure along the first direction. This allows the drainage structure to be connected and fixed to the secondary beam on both sides of the drainage structure along the first direction using fasteners and connecting plates, thereby achieving bilateral symmetrical constraint. This avoids eccentric stress and structural warping problems caused by unilateral fastening, allowing the load to be evenly distributed and transferred from both sides to the secondary beam, improving the integrated load-bearing performance of the drainage structure and the secondary beam. Furthermore, integrally molding the connecting plates with the drainage structure reduces the types and number of parts, eliminating subsequent welding or assembly processes and lowering the risk of connecting plate loosening or breakage. It also eliminates gaps and weak interfaces between the connecting plates and the drainage structure, forming a continuous integral structure and improving the stiffness and fatigue resistance at the connection point. In addition, the sides of the connecting plates furthest from each other are flush with the corresponding sidewalls of the drainage structure, ensuring that the connecting plates do not protrude from the outer contour of the drainage structure after installation. This avoids spatial interference with adjacent components, facilitating a neat and compact layout, and enabling quick on-site positioning, installation, and subsequent maintenance.

[0018] In one optional embodiment, along the first direction, a second limiting groove is further provided on the side wall adjacent to the connecting plate of the secondary beam. The end of the connecting plate away from the drainage structure is bent toward the side where the secondary beam is located to form a first limiting hook set at an angle to the connecting plate. The first limiting hook extends into the second limiting groove and abuts against the upper groove wall of the second limiting groove.

[0019] Beneficial Effects: This invention, through the engaging engagement of the first limiting hook and the second limiting groove, adds a vertical mechanical interlocking structure to the fastener connection. When the drainage structure is subjected to upward wind suction or other external loads, the abutting engagement between the first limiting hook and the upper wall of the second limiting groove restrains the upward movement of the connecting plate, effectively preventing the drainage structure from detaching from the secondary beam. Simultaneously, the abutting engagement between the first limiting hook and the upper wall of the second limiting groove can also directly transfer a portion of the upward load to the side wall of the secondary beam via the hook, forming a second force transmission path. This shares the shear force borne by the fasteners, reducing their stress burden and lowering the possibility of fatigue fracture due to stress concentration. Furthermore, when the fasteners loosen due to long-term vibration or material creep, the first limiting hook can still hook onto the upper wall of the second limiting groove, providing a reliable backup anti-detachment function and reducing the possibility of separation between the drainage structure and the secondary beam.

[0020] In one optional embodiment, a plurality of main beams are arranged side by side along the second direction, and a plurality of secondary beams are respectively located between two adjacent main beams. The plurality of main beams and the plurality of secondary beams together form a plurality of support frames distributed in a rectangular array. The drainage structure includes a main body and a pair of drainage sections, which are located on opposite sides of the main body in the first direction. Each drainage section includes a first water guide plate and a second water guide plate arranged at an angle. The lower surfaces of the main body and the first water guide plate abut against the upper surfaces of the main beam and the secondary beam. One end of the first water guide plate is connected to the main body, and the other end is connected to the second water guide plate. The second water guide plate extends away from the secondary beam, and an opening is formed between the second water guide plate and the main body. The first water guide plate, the second water guide plate, and the main body together form the drainage channel. And / or, the snap-fit ​​protrusion is integrally formed with the drainage structure.

[0021] Beneficial effects: The drainage channel extends along the second direction, consistent with the arrangement direction of the secondary beams. After rainwater flows into the opening from the surface of the photovoltaic modules, it can quickly flow along the drainage channel to both ends of the second direction for discharge, preventing rainwater from accumulating at the edges of the photovoltaic modules or seeping into the interior of the beam modules, effectively reducing the risk of corrosion of the support system. Secondly, the lower surfaces of the main body and the first water guide plate directly abut against the upper surfaces of the main beams and secondary beams, so that the drainage structure not only undertakes the drainage function, but also acts as a force transmission panel above the beam modules, which can evenly distribute the load transmitted by the photovoltaic modules to the main beams and secondary beams below, improving the stress coordination of the entire photovoltaic support system. Furthermore, a pair of drainage sections are symmetrically arranged on both sides of the main body, so that one drainage structure can simultaneously serve the drainage needs of two adjacent rows of photovoltaic modules, reducing the number of parts and improving material utilization. In addition, the second water guide plate extends away from the secondary beams, ensuring that the drainage channel has sufficient water carrying capacity, while also providing clearance for the installation of photovoltaic modules, avoiding interference with the module frame. Finally, the snap-fit ​​protrusion is integrally formed with the drainage structure, eliminating additional connection or welding processes. This ensures the positional accuracy and structural strength of the snap-fit ​​protrusion, simplifies the manufacturing process, and facilitates the rapid installation and long-term stable use of the drainage structure.

[0022] In one optional embodiment, there are multiple drainage structures, each of which is disposed on a plurality of secondary beams, and a portion of each drainage structure abuts against the upper surface of the main beam; along the second direction, the drainage channels of two adjacent drainage structures are connected. The photovoltaic support also includes a pair of main drainage structures, which are located on opposite sides of the beam assembly in the second direction. Each main drainage structure includes a third water guide plate, a fourth water guide plate, and a fifth water guide plate connected in sequence. The third, fourth, and fifth water guide plates together form a main drainage channel with a U-shaped longitudinal section. The third water guide plate is adapted to and fits the outer contour of the main beam. A portion of the free end of the third water guide plate is sandwiched between the upper surface of the main beam and the drainage structure. The free end of the fifth water guide plate is higher than the free end of the third water guide plate, and the free end of the fifth water guide plate is bent toward the side where the third water guide plate is located to form a second limiting hook. The photovoltaic support also includes a plurality of hooks spaced apart along the first direction, one end of which is connected to the main beam and the other end is engaged with the second limiting hook.

[0023] Beneficial effects: The present invention sets up multiple drainage structures installed on each secondary beam, and makes the drainage channels of adjacent drainage structures interconnected along the second direction. At the same time, a pair of main drainage structures are set on opposite sides of the beam assembly in the second direction, and the main drainage structures are connected to the main beam with multiple spaced hooks, thus forming a complete drainage system.

[0024] In a second aspect, the present invention provides a photovoltaic system, comprising: Multiple photovoltaic modules; In the aforementioned photovoltaic support structure, multiple photovoltaic modules are arranged one-to-one with the support frame and located above the support frame, and the drainage structure is located between the photovoltaic modules and the support frame.

[0025] Beneficial effects: The photovoltaic system of the present invention includes the photovoltaic bracket as described above and has all the beneficial technical effects of the photovoltaic bracket, which will not be repeated here. Attached Figure Description

[0026] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of a photovoltaic support structure according to an embodiment of the present invention; Figure 2 for Figure 1 A magnified view of part A in the diagram; Figure 3 This is a schematic diagram of another photovoltaic support structure according to an embodiment of the present invention; Figure 4 for Figure 3 A magnified view of part B in the diagram; Figure 5 for Figure 4 A schematic diagram of the central drainage structure; Figure 6 for Figure 4 Structural diagram of the secondary beam; Figure 7 This is a schematic diagram of the assembly of the main drainage structure and the main beam in an embodiment of the present invention; Figure 8 for Figure 7 Schematic diagram of the main drainage structure; Figure 9 for Figure 7 A schematic diagram of the structure of the pull hook.

[0028] Explanation of reference numerals in the attached figures: 1. Beam assembly; 101. Main beam; 102. Secondary beam; 1021. Snap-fit ​​groove; 10211. First groove segment; 10212. Second groove segment; 10213. Limiting step surface; 1022. Second limiting groove; 103. Support frame; 2. Drainage structure; 201. Opening; 202. Drainage channel; 203. Snap-fit ​​protrusion; 2031. Cavity; 204. Main body; 205. Drainage part; 2051. First water guide plate; 2052. Second water guide plate; 206. Connecting plate; 2061. First limiting hook; 3. Main drainage structure; 301. Third water guide plate; 302. Fourth water guide plate; 303. Fifth water guide plate; 3031. Second limiting hook; 304. Main drainage channel; 4. Hook. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] The following is combined Figures 1 to 9 The following describes embodiments of the present invention.

[0031] According to an embodiment of the present invention, in one aspect, such as Figures 1 to 6 As shown, a photovoltaic support structure is provided, including: a beam assembly 1 and a drainage structure 2. Specifically, the beam assembly 1 includes multiple main beams 101 extending along a first direction and multiple secondary beams 102 extending along a second direction. The multiple main beams 101 and multiple secondary beams 102 together form multiple support frames 103, which are used to support photovoltaic modules. The first direction and the second direction are set at an angle. The drainage structure 2 is located on the upper surface of the support frame 103 and below the photovoltaic module. The drainage structure 2 has an opening 201 and a drainage channel 202 connected to the opening 201. The opening 201 is located on the side of the drainage structure 2 facing the photovoltaic module, and the drainage channel 202 extends along the second direction. The lower surface of the drainage structure 2 is provided with a snap-fit ​​protrusion 203, and the upper surface of the secondary beam 102 is provided with a snap-fit ​​groove 1021 that cooperates with the snap-fit ​​protrusion 203. The drainage structure 2 is connected to the secondary beam 102 by snapping the snap-fit ​​protrusion 203 with the snap-fit ​​groove 1021.

[0032] The present invention provides a snap-fit ​​protrusion 203 at the bottom of the drainage structure 2 and a snap-fit ​​groove 1021 at the corresponding position on the upper surface of the secondary beam 102, which enables the drainage structure 2 and the secondary beam 102 to be snap-fitted together without the aid of independent connectors, thus simplifying the installation steps and improving on-site assembly efficiency.

[0033] Furthermore, after the drainage structure 2 engages with the locking protrusion 203 and the locking groove 1021, the sidewall of the locking groove 1021 can both restrict the upward movement tendency of the locking protrusion 203 and limit its horizontal displacement. This means that even under upward external loads such as wind suction, the drainage structure 2 can still be firmly held on the secondary beam 102, effectively preventing loosening or detachment. At the same time, since this invention does not require independent connectors, there is no assembly gap or looseness caused by connectors. The lower surface of the drainage structure 2 and the upper surface of the secondary beam 102 can always maintain a stable abutment fit, thus forming an integral structure. In this case, when the photovoltaic module is subjected to external loads, the load is directly transferred to the secondary beam 102 through the drainage structure 2, thereby avoiding connection failure caused by loosening or fatigue of connectors and enhancing the connection stability between the drainage structure 2 and the secondary beam 102.

[0034] It should be noted that the reason why using independent connectors, such as clamping blocks, to fix the drainage structure 2 to the secondary beam 102 is prone to poor connection stability is that the connection stability of the clamping blocks largely depends on the preload of the screws. During the long-term service of the photovoltaic support, alternating loads such as wind loads, temperature cycles, and system vibrations will continuously act on the connection nodes, causing the preload of the screws to gradually decrease, resulting in fretting wear between the threaded pairs, and thus creating a gap between the clamping block and the drainage structure 2 and the secondary beam 102. Once a gap occurs, the drainage structure 2 can move slightly relative to the secondary beam 102 under load. This movement further accelerates the loss of preload and fatigue of the connection pairs, forming a vicious cycle, ultimately leading to the loosening of the clamping block and the detachment of the drainage structure 2.

[0035] This application employs a snap-fit ​​structure where the snap-fit ​​protrusion 203 engages with the snap-fit ​​groove 1021. This allows the drainage structure 2 to form a seamless and stable connection directly between the snap-fit ​​protrusion 203 on its lower surface and the snap-fit ​​groove 1021 on the upper surface of the secondary beam 102 without the need for any independent connectors or fasteners, thus eliminating the dependence on screw preload. Furthermore, since the snap-fit ​​protrusion 203 and the snap-fit ​​groove 1021 are in surface contact, there is no gap caused by preload attenuation in existing connection schemes. Therefore, under alternating loads such as wind load, temperature cycling, and vibration, the drainage structure 2 will not experience slight movement relative to the secondary beam 102, and the vicious cycle of preload loss and connection fatigue will not occur. Meanwhile, the sidewall of the snap-fit ​​groove 1021 can restrict the upward movement tendency of the snap-fit ​​protrusion 203 and limit its displacement in the horizontal direction, so that the drainage structure 2 is reliably constrained in both the vertical and horizontal directions. Even if it is used in harsh environments for a long time, it can still maintain a stable connection state and effectively avoid failure problems such as loosening and falling off.

[0036] Specifically, in this embodiment, such as Figure 1 and Figure 3 As shown, the first direction is the length direction of the main beam 101, and the second direction is the length direction of the secondary beam 102. The fact that the first and second directions are set at an angle means that the main beam 101 and the secondary beam 102 are not arranged parallel in space, but intersect at a certain angle, thus forming a mesh or grid-like support frame together.

[0037] Preferably, such as Figure 1 and Figure 3 As shown, the first direction and the second direction are perpendicular to each other, so that multiple main beams 101 and multiple secondary beams 102 together form multiple rectangular or square support frames 103. This vertical cross layout is not only conducive to the orderly arrangement of photovoltaic modules, but also ensures that the load is uniformly and efficiently transferred between the main beams 101 and the secondary beams 102. At the same time, it is convenient for the drainage structure 2 to be set along the length direction of the secondary beams 102 (i.e., the second direction) to form a continuous drainage channel 202.

[0038] Specifically, the "up" and "down" directions mentioned in this embodiment are based on the height direction of the photovoltaic support. Taking the photovoltaic support installed on the ground or supporting foundation such as a roof as a reference, the vertically upward direction is defined as "up", and the opposite direction is defined as "down".

[0039] Specifically, the side where the photovoltaic module is located is considered the upper side, and the side of the main beam 101 and secondary beam 102 facing away from the photovoltaic module is considered the lower side. Based on this orientation, the drainage structure 2 is located below the photovoltaic module and above the beam assembly 1, ensuring that rainwater dripping from the surface of the photovoltaic module can naturally fall into the opening 201 of the drainage structure 2 by gravity and smoothly drain out along the drainage channel 202. Simultaneously, a snap-fit ​​protrusion 203 is provided on the lower surface of the drainage structure 2, and a snap-fit ​​groove 1021 is provided on the upper surface of the secondary beam 102. These two elements form a vertically interlocking snap-fit ​​connection, ensuring that the drainage structure 2 remains firmly pressed against the secondary beam 102 under its own weight and external loads, further enhancing the stability and pull-out resistance of the connection. It should be noted that the above orientation definition is only used to describe the relative positional relationship between the components in this embodiment and does not constitute an absolute limitation on the actual installation posture of the photovoltaic support.

[0040] It should be noted that the horizontal direction mentioned above refers to any direction within a plane perpendicular to the height direction of the photovoltaic support. Specifically, in this embodiment, the horizontal direction includes at least the first direction and the second direction. When the snap-fit ​​protrusion 203 and the snap-fit ​​groove 1021 are engaged, the sidewall of the snap-fit ​​groove 1021 can effectively constrain the displacement of the snap-fit ​​protrusion 203 within the aforementioned horizontal direction, thereby preventing the drainage structure 2 from lateral movement or longitudinal slippage relative to the secondary beam 102, ensuring that the drainage structure 2 always remains in the preset installation position.

[0041] Preferably, in this embodiment, the secondary beam 102 has a rectangular outer contour. This not only reduces the processing difficulty of the secondary beam 102 and lowers production costs, but also increases the contact area between the lower surface of the drainage structure 2 and the upper surface of the secondary beam 102. This allows for a wider range of support and contact based on the engagement of the locking protrusion 203 and the locking groove 1021, enabling the load borne by the drainage structure 2 to be more evenly distributed to the secondary beam 102 and preventing excessive local compressive stress that could lead to deformation or wear. Furthermore, when the outer contour of the secondary beam 102 is rectangular, its upper surface is planar; therefore, selecting a secondary beam 102 with a rectangular outer contour also facilitates the formation of the locking groove 1021.

[0042] In some embodiments, such as Figure 4 and Figure 6As shown, the cross-sectional area of ​​the opening of the snap-fit ​​groove 1021 is smaller than the cross-sectional area of ​​the bottom of the groove, and / or, a first limiting groove is provided on the groove wall of the snap-fit ​​groove 1021; the snap-fit ​​protrusion 203 is adapted to the snap-fit ​​groove 1021. It can be understood that by setting the snap-fit ​​groove 1021 as a narrowed structure with a groove opening cross-sectional area smaller than the groove bottom cross-sectional area, and / or by adding a first limiting groove on the groove wall of the snap-fit ​​groove 1021, and by providing a matching snap-fit ​​protrusion 203, the stability and pull-out resistance of the snap-fit ​​engagement can be further enhanced.

[0043] Specifically, the constricted structure allows the snap-fit ​​protrusion 203 to be constrained by the groove wall at the opening of the snap-fit ​​groove 1021. This not only limits the upward movement tendency of the snap-fit ​​protrusion 203, but also limits its horizontal displacement, thereby effectively preventing the drainage structure 2 from swaying or shifting relative to the secondary beam 102. When the groove wall of the snap-fit ​​groove 1021 is provided with a first limiting groove, the snap-fit ​​protrusion 203 will be provided with a corresponding protrusion structure. Therefore, the two can form an embedded mechanical interlock, which can further prevent the snap-fit ​​protrusion 203 from coming out of the snap-fit ​​groove 1021. Even under a large upward wind suction or continuous vibration load, the drainage structure 2 can be firmly held on the secondary beam 102.

[0044] Specifically, in this embodiment, the number of first limiting grooves provided on the groove wall of the snap-fit ​​groove 1021 can be one or more. For example, the groove wall of the snap-fit ​​groove 1021 is provided with multiple first limiting grooves, and the multiple first limiting grooves can be arranged opposite each other on the groove wall of the snap-fit ​​groove 1021.

[0045] It is understandable that, in order to enhance the engagement reliability between the corresponding protrusion structure on the snap-fit ​​protrusion 203 and the first limiting groove, the first limiting groove can also be set as a narrowing structure where the cross-sectional area of ​​the groove opening is smaller than the cross-sectional area of ​​its groove bottom.

[0046] Specifically, in this embodiment, the cross-sectional area of ​​the slot opening of the snap-fit ​​groove 1021 refers to the area enclosed by the cross-sectional profile obtained by cutting the slot opening of the snap-fit ​​groove 1021 with a plane perpendicular to the height direction of the photovoltaic bracket; correspondingly, the cross-sectional area of ​​the bottom of the snap-fit ​​groove 1021 refers to the area enclosed by the cross-sectional profile obtained by cutting the bottom of the snap-fit ​​groove 1021 with a plane in the same direction (i.e., perpendicular to the height direction).

[0047] It should be noted that, in this embodiment, although the cross-sectional area of ​​the opening of the snap-fit ​​groove 1021 is limited to the cross-sectional area of ​​the bottom, the cross-sectional area of ​​the snap-fit ​​groove 1021 can gradually increase from the opening to the bottom, for example, by using a trapezoidal or dovetail-shaped cross-section with a sloping transition; it can also increase non-gradually, for example, by a stepped increase. As long as the basic shape of a narrow opening and a wide bottom can be achieved, thus forming an effective anti-detachment constraint on the snap-fit ​​protrusion 203, it is acceptable. Specifically, the method of changing the cross-sectional area can be flexibly selected according to the material of the drainage structure 2, the rigidity of the snap-fit ​​protrusion 203, and the convenience requirements of on-site assembly.

[0048] In some embodiments, such as Figure 4 and Figure 6 As shown, from the opening to the bottom of the locking groove 1021, the locking groove 1021 includes a first groove segment 10211 and a second groove segment 10212 that are connected. The cross-sectional area of ​​the first groove segment 10211 is smaller than the cross-sectional area of ​​the second groove segment 10212, and a limiting step surface 10213 is formed at the connection between the first groove segment 10211 and the second groove segment 10212. It can be understood that by setting the locking groove 1021 as a connected first groove segment 10211 and a second groove segment 10212, and making the cross-sectional area of ​​the first groove segment 10211 smaller than the cross-sectional area of ​​the second groove segment 10212, the limiting step surface 10213 can be naturally formed at the connection between the first groove segment 10211 and the second groove segment 10212. In this way, when the snap-fit ​​protrusion 203 engages with the snap-fit ​​groove 1021, the limiting step surface 10213 and the corresponding part of the snap-fit ​​protrusion 203 will naturally form a stop fit, effectively preventing the snap-fit ​​protrusion 203 from coming out of the groove. Even under strong upward wind suction or vibration load, the drainage structure 2 is unlikely to separate from the secondary beam 102. At the same time, the first groove segment 10211 with a smaller cross-sectional area can narrow the groove opening, which can form a horizontal constraint on the corresponding part of the snap-fit ​​protrusion 203, thereby limiting the swaying of the drainage structure 2 relative to the secondary beam 102. Thus, the drainage structure 2 and the snap-fit ​​groove 1021 of the secondary beam 102 form a gapless rigid connection whole through the snap-fit ​​protrusion 203 and the snap-fit ​​groove 1021 of the secondary beam 102. Its lower surface is in close contact with the upper surface of the secondary beam 102, jointly bearing and transmitting external loads. Thus, without relying on independent connecting parts, the drainage structure 2 and the beam assembly 1 can achieve integrated and coordinated force bearing, effectively improving the connection stability and load resistance of the two.

[0049] In some embodiments, such as Figure 4 and Figure 6As shown, the upper surface of the secondary beam 102 is recessed in the direction away from the drainage structure 2 to form a locking groove 1021. Along the second direction, at least one end of the locking groove 1021 penetrates the corresponding sidewall of the secondary beam 102. It can be understood that the locking groove 1021 in this embodiment is directly formed by the recess on the upper surface of the secondary beam 102, meaning that no additional connecting structures need to be added to the secondary beam 102, simplifying the processing technology of the secondary beam 102. Simultaneously, along the second direction, at least one end of the locking groove 1021 penetrates the corresponding sidewall of the secondary beam 102, allowing the drainage structure 2 to be pushed in as a whole from the end of the secondary beam 102 along the second direction, without the need for segmented locking or the use of auxiliary tools, thereby improving on-site assembly efficiency.

[0050] It is understandable that, along the second direction, when one or both ends of the snap-fit ​​groove 1021 penetrate the corresponding sidewall of the secondary beam 102, although this reduces the assembly difficulty of the snap-fit ​​protrusion 203 and allows the drainage structure 2 to be quickly installed by directly pushing it into the end of the secondary beam 102, the snap-fit ​​groove 1021 lacks end-sealing and limiting sidewalls in the second direction. Therefore, the snap-fit ​​protrusion 203 may accidentally slip along the second direction during use, causing the drainage structure 2 to shift relative to the secondary beam 102 or even detach from its end. Based on this, an independent sealing component can be installed at the end of the secondary beam 102, or the end of the secondary beam 102 can be sealed using the main beam 101.

[0051] Preferably, the ends of the secondary beam 102 are sealed by the main beam 101. Specifically, the secondary beam 102 is erected between two adjacent main beams 101. At this time, the sidewalls of the two adjacent main beams 101 are located at the two ends of the secondary beam 102, respectively. The natural shielding effect of the sidewalls of the main beams 101 on the ends of the secondary beam 102 can effectively limit the sliding range of the locking protrusion 203 along the second direction, without the need for additional sealing components. This method of limiting the position using the existing structure retains the assembly convenience brought by the end penetration while avoiding the addition of independent parts, which helps to simplify the structure, reduce costs, and reduce on-site installation procedures.

[0052] In some embodiments, such as Figure 4 and Figure 5 As shown, along the first direction, at least one side of the drainage structure 2 is provided with a downwardly extending connecting plate 206. The connecting plate 206 is attached to the side wall of its adjacent secondary beam 102 and connected by fasteners. It can be understood that by providing a downwardly extending connecting plate 206 on at least one side of the drainage structure 2 in the first direction, and by connecting the connecting plate 206 to the side wall of the adjacent secondary beam 102 and connecting it by fasteners, this embodiment of the invention can provide additional connection and reinforcement measures for the drainage structure 2 and the secondary beam 102, based on the rapid positioning and initial fixation formed by the snap-fit ​​protrusion 203 and the snap-fit ​​groove 1021.

[0053] Specifically, when the drainage structure 2 is subjected to wind suction, vibration, or uneven loads, the fasteners can constrain the displacement of the connecting plate 206 relative to the side wall of the secondary beam 102, thereby effectively suppressing the possible displacement of the snap-fit ​​protrusion 203 within the snap-fit ​​groove 1021 and preventing loosening of the snap-fit ​​fit due to material creep or fatigue during long-term use. Simultaneously, the connecting plate 206 extends downwards along the side of the drainage structure 2 and forms a close contact with the side wall of the secondary beam 102. Under the pre-tightening force of the fasteners, the two can maintain stable surface contact, thus enabling the drainage structure 2 and the secondary beam 102 to be firmly integrated into a single unit. This approach retains the high efficiency and convenience of snap-fit ​​assembly while enhancing the redundancy of the connection structure and its resistance to lateral loads, simplifying the installation process while ensuring the long-term reliability of the drainage structure 2.

[0054] Furthermore, such as Figure 4 and Figure 5 As shown, along the first direction, both sides of the drainage structure 2 are provided with downwardly extending connecting plates 206; the connecting plates 206 are integrally formed with the drainage structure 2, and the sides of the pair of connecting plates 206 away from each other are flush with the sidewalls of their adjacent drainage structure 2. It can be understood that by providing downwardly extending connecting plates 206 on both sides of the drainage structure 2 along the first direction, the drainage structure 2 can be connected and fixed to the secondary beam 102 on both sides of the drainage structure 2 along the first direction by fasteners and connecting plates 206, thereby achieving bilateral symmetrical constraint, avoiding eccentric force and structural warping problems caused by unilateral fastening, and enabling the load to be evenly distributed and transmitted to the secondary beam 102 from both sides, thereby improving the integrated load-bearing performance of the drainage structure 2 and the secondary beam 102. Integrating the connecting plate 206 with the drainage structure 2 as a single unit reduces the types and number of components, eliminating the need for subsequent welding or assembly processes and lowering the risk of the connecting plate 206 loosening or breaking. Furthermore, it eliminates gaps and weak interfaces between the connecting plate 206 and the drainage structure 2, creating a continuous, integrated structure that improves the rigidity and fatigue resistance of the connection. In addition, the sides of the connecting plates 206 furthest from each other are flush with the corresponding sidewalls of the drainage structure 2, ensuring that the connecting plates 206 do not protrude from the outer contour of the drainage structure 2 after installation. This avoids spatial interference with adjacent components, facilitating a neat and compact layout and enabling quick on-site installation and subsequent maintenance.

[0055] Specifically, in this embodiment, the fastener may be a self-tapping screw.

[0056] In some embodiments, such as Figure 4 and Figure 6As shown, along the first direction, a second limiting groove 1022 is also provided on the side wall adjacent to the connecting plate 206 of the secondary beam 102. The end of the connecting plate 206 away from the drainage structure 2 is bent toward the side where the secondary beam 102 is located to form a first limiting hook 2061 set at an angle to the connecting plate 206. The first limiting hook 2061 extends into the second limiting groove 1022 and abuts against the upper groove wall of the second limiting groove 1022. It can be understood that, through the engaging cooperation between the first limiting hook 2061 and the second limiting groove 1022, this embodiment of the invention can add a mechanical interlocking structure in the vertical direction on the basis of the fastener connection.

[0057] Specifically, when the drainage structure 2 is subjected to upward wind suction or other external loads, the abutment between the first limiting hook 2061 and the upper wall of the second limiting groove 1022 can restrain the upward movement of the connecting plate 206, thereby effectively preventing the drainage structure 2 from detaching from the secondary beam 102. Simultaneously, the abutment between the first limiting hook 2061 and the upper wall of the second limiting groove 1022 can also directly transfer a portion of the upward load to the side wall of the secondary beam 102 via the hook, forming a second force transmission path. This shares the shear force borne by the fastener, reduces its stress burden, and lowers the possibility of fatigue fracture due to stress concentration. Furthermore, when the fastener loosens due to long-term vibration or material creep, the first limiting hook 2061 can still hook onto the upper wall of the second limiting groove 1022, providing a reliable backup anti-detachment function and reducing the possibility of separation between the drainage structure 2 and the secondary beam 102.

[0058] Preferably, in this embodiment, the shape of the second limiting groove 1022 is consistent with the shape of the snap-fit ​​groove 1021. In this way, the complexity of the manufacturing process of the secondary beam 102 can be reduced.

[0059] In some implementations, such as Figure 4 and Figure 5As shown, the snap-fit ​​protrusion 203 has a cavity 2031 inside, which is connected to the drainage channel 202. It can be understood that setting a cavity 2031 inside the snap-fit ​​protrusion 203 can reduce the overall weight of the drainage structure 2 and reduce material costs without significantly reducing the structural strength. Connecting the cavity 2031 to the drainage channel 202 allows some of the water in the drainage channel 202 to flow into the cavity 2031 of the snap-fit ​​protrusion 203. This not only increases the weight of the snap-fit ​​protrusion 203, effectively providing an additional counterweight load for the drainage structure 2, but also makes the snap-fit ​​protrusion 203 and the snap-fit ​​groove 1021 on the secondary beam 102 press tighter and the fit more stable, thereby further enhancing the anti-loosening ability of the drainage structure 2 during long-term service. At the same time, the cavity 2031 can also serve as a temporary water storage space, absorbing water exceeding the flow capacity of the drainage channel 202 during instantaneous high-flow drainage, effectively preventing water from overflowing the upper surface of the main body 204 and wetting the edges of the photovoltaic module, thus balancing structural stability and drainage safety.

[0060] It is understandable that since the water in the cavity 2031 does not have the ability to flow back to the drainage channel 202, a drainage outlet connected to the cavity 2031 can be set on the drainage structure 2 to slowly discharge the water that has accumulated in the cavity 2031 for a long time, so as to avoid corrosion of the inner wall of the cavity 2031 or unnecessary permanent load due to long-term water retention.

[0061] For example, the drain outlet is located at the lowest point of the cavity 2031 or at the bottom of the side wall, and adopts a small aperture design so that when a large flow of water is discharged instantaneously, the water entering the cavity 2031 can be temporarily stored to play a role in counterweight and peak reduction; after the rainfall stops, the water in the cavity 2031 can be gradually discharged to the outside through the drain outlet in a slow seepage manner (for example, dripping onto the roof or being guided to the main drainage structure 3), thereby restoring the cavity 2031 to an empty state and providing water storage capacity for the next heavy rainfall.

[0062] In some embodiments, such as Figures 1 to 4As shown, multiple main beams 101 are arranged side by side along the second direction, and multiple secondary beams 102 are located between adjacent main beams 101. The multiple main beams 101 and multiple secondary beams 102 together form multiple support frames 103 distributed in a rectangular array. The drainage structure 2 includes a main body 204 and a pair of drainage sections 205. The pair of drainage sections 205 are located on opposite sides of the main body 204 in the first direction. The drainage section 205 includes a first water guide plate 2051 and a second water guide plate 2052 arranged at an angle. The main body 204 and the first... The lower surface of the water guide plate 2051 abuts against the upper surfaces of the main beam 101 and the secondary beam 102. One end of the first water guide plate 2051 is connected to the main body 204, and the other end is connected to the second water guide plate 2052. The second water guide plate 2052 extends away from the secondary beam 102. An opening 201 is formed between the second water guide plate 2052 and the main body 204. The first water guide plate 2051, the second water guide plate 2052, and the main body 204 together form a drainage channel 202; and / or, the snap-fit ​​protrusion 203 is integrally formed with the drainage structure 2.

[0063] It is understood that in this embodiment, the drainage channel 202 extends along the second direction, consistent with the arrangement direction of the secondary beam 102. After rainwater flows into the opening 201 from the surface of the photovoltaic module, it can quickly flow along the drainage channel 202 to both ends of the second direction for discharge, avoiding rainwater accumulation at the edge of the photovoltaic module or seeping into the interior of the beam assembly 1, effectively reducing the risk of corrosion of the support system. Secondly, the lower surfaces of the main body 204 and the first water guide plate 2051 directly abut against the upper surfaces of the main beam 101 and the secondary beam 102, so that the drainage structure 2, while undertaking the drainage function, also acts as a force transmission panel above the beam assembly 1, which can evenly distribute the load transmitted by the photovoltaic module to the main beam 101 and the secondary beam 102 below, improving the stress coordination of the entire photovoltaic support. Furthermore, a pair of drainage parts 205 are symmetrically arranged on both sides of the main body 204, so that one drainage structure 2 can simultaneously serve the drainage needs of two adjacent rows of photovoltaic modules, reducing the number of parts and improving material utilization. In addition, the second water guide plate 2052 extends away from the secondary beam 102, ensuring that the drainage channel 202 has sufficient water flow capacity while also providing clearance for the installation of photovoltaic modules, avoiding interference with the module frame. Finally, the snap-fit ​​protrusion 203 is integrally formed with the drainage structure 2, eliminating additional connection or welding processes. This ensures both the positional accuracy and structural strength of the snap-fit ​​protrusion 203 and simplifies the manufacturing process, facilitating the rapid installation and long-term stable use of the drainage structure 2.

[0064] Specifically, in this embodiment, the lower surfaces of the main body 204 and the first water guide plate 2051 abut against the upper surfaces of the main beam 101 and the secondary beam 102, which means that the lower surface of the main body 204 and the lower surface of the first water guide plate 2051 are on the same horizontal plane, so that the drainage structure 2 as a whole sits stably on the main beam 101 or the secondary beam 102 in a flat bottom form.

[0065] Furthermore, the reason why the lower surface of the main body 204 and the lower surface of the first water guide plate 2051 can abut against the upper surface of the main beam 101 is that when multiple secondary beams 102 are located between two adjacent main beams 101, the upper surface of the secondary beam 102 and the upper surface of its adjacent main beam 101 are at the same horizontal level. Therefore, when the drainage structure 2 extends along the second direction, it is possible to achieve that the lower surface of the main body 204 and the lower surface of the first water guide plate 2051 can abut against the upper surface of the main beam 101.

[0066] It is understandable that since the lower surface of the main body 204 and the lower surface of the first water guide plate 2051 can abut against the upper surface of the main beam 101, it means that the snap-fit ​​protrusion 203 on the drainage structure 2 only exists in the part of the drainage structure 2 corresponding to the secondary beam 102. If the snap-fit ​​protrusion 203 is also provided at the position corresponding to the main beam 101, on the one hand, the drainage structure 2 will not be able to sit stably on the main beam 101 because there is no matching snap-fit ​​groove 1021 on the main beam 101, thus breaking the surface contact between the lower surface of the main body 204 and the upper surface of the main beam 101.

[0067] Preferably, in this embodiment, the first water guide plate 2051, the second water guide plate 2052 and the main body 204 are integrally formed.

[0068] Specifically, in this embodiment, the end of the main body 204 furthest from the secondary beam 102 is used to abut against the photovoltaic module. Based on this, to avoid interference between the second water guide plate 2052 and the photovoltaic module, and to facilitate water flow through the opening 201 into the drainage channel 202, it is necessary not only that the free end of the second water guide plate 2052 be lower than the upper surface of the main body 204 in the vertical direction, but also that the width of the main body 204 be controlled within a reasonable range. That is, the width of the main body 204 along the first direction should be sufficient to allow the edge of the photovoltaic module to stably abut against the main body 204, but it should not be too wide to obstruct or hinder the flow of water from the surface of the photovoltaic module into the drainage channel 202 below.

[0069] It should be noted that the free end of the second water guide plate 2052 is the end of the second water guide plate 2052 that is away from the first water guide plate 2051.

[0070] In some implementations, such as Figures 4 to 6As shown, along the first direction, the snap-fit ​​groove 1021 is located at the middle position of the upper surface of the secondary beam 102; and / or, the snap-fit ​​protrusion 203 is located at the middle position below the drainage structure 2. On the one hand, this allows the load transmitted from the drainage structure 2 to the secondary beam 102 to be symmetrically distributed along the centerline of the secondary beam 102, avoiding additional torque or local stress concentration in the secondary beam 102 due to eccentric loading, thereby improving the stress rationality and service life of the secondary beam 102; on the other hand, the central setting helps to ensure that the overhang lengths on both sides of the drainage structure 2 along the first direction are equal after installation, so that the relative positions of the drainage parts 205 on both sides of the drainage structure 2 and the photovoltaic modules are consistent.

[0071] It should be noted that the phrase "the snap-fit ​​groove 1021 is located at the center of the upper surface of the secondary beam 102" means that, along the first direction, the snap-fit ​​groove 1021 can be located at the exact center of the upper surface of the secondary beam 102, or it can be located near the exact center of the upper surface of the secondary beam 102. Similarly, the phrase "the snap-fit ​​protrusion 203 is located at the center of the lower part of the drainage structure 2" means that, along the first direction, the snap-fit ​​protrusion 203 can be located at the exact center of the lower part of the drainage structure 2, or it can be located near the exact center of the lower part of the drainage structure 2.

[0072] In some embodiments, such as Figures 7 to 9 As shown, there are multiple drainage structures 2, which are respectively installed on multiple secondary beams 102, and a portion of each drainage structure 2 abuts against the upper surface of the main beam 101. Along the second direction, the drainage channels 202 of two adjacent drainage structures 2 are connected. The photovoltaic support also includes a pair of main drainage structures 3, which are located on opposite sides of the beam assembly 1 in the second direction. Each main drainage structure 3 includes a third water guide plate 301, a fourth water guide plate 302, and a fifth water guide plate 303 connected in sequence. The third water guide plate 301, the fourth water guide plate 302, and the fifth water guide plate 303 together form a structure with a similar appearance. The main drainage channel 304 has a U-shaped longitudinal section; the third water guide plate 301 is adapted to the outer contour of the main beam 101 and fits against the main beam 101, and part of the free end of the third water guide plate 301 is clamped between the upper surface of the main beam 101 and the drainage structure 2; the free end of the fifth water guide plate 303 is higher than the free end of the third water guide plate 301, and the free end of the fifth water guide plate 303 is bent toward the side where the third water guide plate 301 is located to form the second limiting hook 3031; the photovoltaic bracket also includes a plurality of hooks 4 spaced apart along the first direction, one end of the hook 4 is connected to the main beam 101, and the other end is limited and engaged with the second limiting hook 3031.

[0073] It is understood that, in this embodiment of the invention, multiple drainage structures 2 are installed on each secondary beam 102, and the drainage channels 202 of adjacent drainage structures 2 are interconnected along the second direction. At the same time, a pair of main drainage structures 3 are set on opposite sides of the beam assembly 1 in the second direction, and multiple spaced hooks 4 are used to connect the main drainage structures 3 to the main beam 101, thus forming a complete drainage system.

[0074] Specifically, rainwater collected by multiple drainage structures 2 flows sequentially into the main drainage channels 304 at both ends along the second direction, achieving directional and centralized drainage and avoiding rainwater accumulation or overflow. The third water guide plate 301 of the main drainage structure 3 fits the outer contour of the main beam 101, and its free end is clamped between the upper surface of the main beam 101 and the drainage structure 2. The main drainage structure 3 can be reliably positioned in the vertical direction by utilizing the self-weight and installation pressure of the drainage structure 2, without the need for additional connecting parts. The free end of the fifth water guide plate 303 is higher than the free end of the third water guide plate 301 and is bent to form a second limiting hook 3031, which is engaged with multiple hooks 4 spaced apart along the first direction. One end of the hook 4 is fixed to the main beam 101, and the other end hooks the second limiting hook 3031, thereby effectively constraining the main drainage structure 3 in both the length direction and the vertical direction of the main beam 101, preventing it from tilting outward or detaching. The hooks 4 are arranged at intervals rather than continuously, which not only meets the requirements of fixing strength and wind resistance, but also saves material costs and facilitates on-site installation and adjustment.

[0075] It should be noted that the longitudinal section mentioned above refers to the section obtained by cutting a plane that is parallel to the vertical direction of the photovoltaic support.

[0076] It should be further explained that the water can flow smoothly within the drainage channel 202 because the secondary beam 102 in the beam assembly 1 is inclined. Specifically, the secondary beam 102 is installed with a certain slope along its length (i.e., the second direction), usually at a certain angle, so that the drainage channel 202 forms a downward slope. After rainwater dripping from the surface of the photovoltaic module enters the drainage channel 202, it automatically flows towards the lower end along the inclined direction of the secondary beam 102 under the action of gravity, and finally flows into the main drainage structure 3 located at the end of the beam assembly 1 for centralized discharge.

[0077] Specifically, in this embodiment, the free end of the third water guide plate 301 is the end of the third water guide plate 301 that is away from the fourth water guide plate 302, and the free end of the fifth water guide plate 303 is the end of the fifth water guide plate 303 that is away from the fourth water guide plate 302.

[0078] Preferably, in this embodiment, the third water guide plate 301, the fourth water guide plate 302 and the fifth water guide plate 303 are integrally formed.

[0079] Furthermore, multiple drainage structures 2 are correspondingly arranged with multiple secondary beams 102, and the length of the snap-fit ​​protrusion 203 on the drainage structure 2 in the second direction matches the length of the secondary beam 102. In this way, the drainage structure 2 can achieve a seamless rigid connection with the snap-fit ​​groove 1021 of the secondary beam 102 along the entire length of the secondary beam 102 through the snap-fit ​​protrusion 203. There is no assembly gap or looseness between the two. The lower surface of the drainage structure 2 and the upper surface of the secondary beam 102 always remain in close contact. Thus, without relying on independent connecting parts, the drainage structure 2 and the secondary beam 102 can form an integral structure that works together to bear force along the entire length, effectively improving the connection stability and load-bearing capacity of the two.

[0080] It is understood that the length of the snap-fit ​​protrusion 203 is less than the length of the secondary beam 102. Therefore, multiple snap-fit ​​protrusions 203 spaced apart along the second direction can be provided on the drainage structure 2. Similarly, the length of the connecting plate 206 in the second direction can also follow the layout concept of the snap-fit ​​protrusion 203; that is, it can be set as multiple small connecting plates 206 spaced apart along the second direction, or it can be set as a large connecting plate 206 with a length approximately equal to that of the secondary beam 102. Further details will not be elaborated here.

[0081] According to an embodiment of the present invention, another aspect provides a photovoltaic system, including: a photovoltaic module and the photovoltaic support described above.

[0082] Specifically, there are multiple photovoltaic modules, and each photovoltaic module is set up in a one-to-one correspondence with the support frame 103 and located above the support frame 103. The drainage structure 2 is located between the photovoltaic modules and the support frame 103.

[0083] It is understood that the photovoltaic system of this embodiment includes the photovoltaic bracket as described above, and has all the beneficial technical effects of the photovoltaic bracket, which will not be repeated here.

[0084] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A photovoltaic support structure, characterized in that, include: The beam assembly (1) includes a plurality of main beams (101) extending along a first direction and a plurality of secondary beams (102) extending along a second direction. The plurality of main beams (101) and the plurality of secondary beams (102) together form a plurality of support frames (103), which are used to support photovoltaic modules. The first direction and the second direction are set at an angle. A drainage structure (2) is located on the upper surface of the support frame (103) and below the photovoltaic module. The drainage structure (2) has an opening (201) and a drainage channel (202) connected to the opening (201). The opening (201) is located on the side of the drainage structure (2) facing the photovoltaic module, and the drainage channel (202) extends along the second direction. The lower surface of the drainage structure (2) is provided with a snap-fit ​​protrusion (203), and the upper surface of the secondary beam (102) is provided with a snap-fit ​​groove (1021) that cooperates with the snap-fit ​​protrusion (203). The drainage structure (2) is connected to the secondary beam (102) by snapping the snap-fit ​​protrusion (203) with the snap-fit ​​groove (1021).

2. The photovoltaic support according to claim 1, characterized in that, The cross-sectional area of ​​the groove opening of the snap-fit ​​groove (1021) is smaller than the cross-sectional area of ​​the groove bottom, and / or, the groove wall of the snap-fit ​​groove (1021) is provided with a first limiting groove; the snap-fit ​​protrusion (203) is adapted to the snap-fit ​​groove (1021).

3. The photovoltaic support according to claim 2, characterized in that, From the opening of the snap-fit ​​groove (1021) to the bottom of the groove, the snap-fit ​​groove (1021) includes a first groove segment (10211) and a second groove segment (10212) that are connected. The cross-sectional area of ​​the first groove segment (10211) is smaller than the cross-sectional area of ​​the second groove segment (10212). A limiting step surface (10213) is formed at the connection between the first groove segment (10211) and the second groove segment (10212).

4. The photovoltaic support according to any one of claims 1 to 3, characterized in that, The upper surface of the secondary beam (102) is recessed in the direction away from the drainage structure (2) to form the snap-fit ​​groove (1021). Along the second direction, at least one end of the snap-fit ​​groove (1021) penetrates the corresponding side wall of the secondary beam (102).

5. The photovoltaic support according to claim 1, characterized in that, Along the first direction, at least one side of the drainage structure (2) is provided with a downwardly extending connecting plate (206), which is attached to the side wall of the adjacent secondary beam (102) and connected by fasteners.

6. The photovoltaic support according to claim 5, characterized in that, Along the first direction, the drainage structure (2) has downwardly extending connecting plates (206) on both opposite sides; the connecting plates (206) are integrally formed with the drainage structure (2), and the sides of the pair of connecting plates (206) away from each other are flush with the sidewalls of the adjacent drainage structure (2).

7. The photovoltaic support according to claim 5, characterized in that, Along the first direction, a second limiting groove (1022) is also provided on the side wall adjacent to the connecting plate (206) of the secondary beam (102). The end of the connecting plate (206) away from the drainage structure (2) is bent toward the side where the secondary beam (102) is located, forming a first limiting hook (2061) set at an angle to the connecting plate (206). The first limiting hook (2061) extends into the second limiting groove (1022) and abuts against the upper groove wall of the second limiting groove (1022).

8. The photovoltaic support according to claim 1, characterized in that, Multiple main beams (101) are arranged side by side along the second direction, and multiple secondary beams (102) are located between two adjacent main beams (101). The multiple main beams (101) and multiple secondary beams (102) together form multiple support frames (103) distributed in a rectangular array. The drainage structure (2) includes a main body (204) and a pair of drainage sections (205). The pair of drainage sections (205) are located on opposite sides of the main body (204) in the first direction. Each drainage section (205) includes a first water guide plate (2051) and a second water guide plate (2052) arranged at an angle. The lower surfaces of the main body (204) and the first water guide plate (2051) abut against the upper surfaces of the main beam (101) and the secondary beam (102). One end of the first water guide plate (2051) is connected to the main body (204), and the other end is connected to the second water guide plate (2052). The second water guide plate (2052) extends away from the secondary beam (102). The opening (201) is formed between the second water guide plate (2052) and the main body (204). The first water guide plate (2051), the second water guide plate (2052), and the main body (204) together form the drainage channel (202). And / or, the snap-fit ​​protrusion (203) is integrally formed with the drainage structure (2).

9. The photovoltaic bracket according to claim 8, characterized in that, The number of drainage structures (2) is multiple, and the multiple drainage structures (2) are respectively disposed on multiple secondary beams (102), and a part of the drainage structure (2) abuts against the upper surface of the main beam (101); along the second direction, the drainage channels (202) of two adjacent drainage structures (2) are connected. The photovoltaic support also includes a pair of main drainage structures (3), which are located on opposite sides of the beam assembly (1) in the second direction. Each main drainage structure (3) includes a third water guide plate (301), a fourth water guide plate (302), and a fifth water guide plate (303) connected in sequence. The third water guide plate (301), the fourth water guide plate (302), and the fifth water guide plate (303) together form a main drainage channel (304) with a U-shaped longitudinal section. The three water guide plates (301) are adapted to the outer contour of the main beam (101) and are attached to the main beam (101). The free end of the third water guide plate (301) is partially sandwiched between the upper surface of the main beam (101) and the drainage structure (2). The free end of the fifth water guide plate (303) is higher than the free end of the third water guide plate (301), and the free end of the fifth water guide plate (303) is bent toward the side where the third water guide plate (301) is located to form a second limiting hook (3031). The photovoltaic bracket also includes a plurality of hooks (4) spaced apart along the first direction. One end of the hook (4) is connected to the main beam (101), and the other end is engaged with the second limiting hook (3031).

10. A photovoltaic system, characterized in that, include: Multiple photovoltaic modules; According to any one of claims 1 to 9, a plurality of photovoltaic modules are arranged in a one-to-one correspondence with the support frame (103) and located above the support frame (103), and the drainage structure (2) is located between the photovoltaic modules and the support frame (103).

Images