Purlin structure and mounting assembly

Abstract

The application relates to the technical field of photovoltaic devices, and discloses a purline structure and a mounting assembly. The purline structure is used for fixing a photovoltaic assembly to a main shaft and comprises a purline body. The purline body comprises a first connecting part and a second connecting part. The first connecting part is arranged at the top of the purline body and is used for being connected with the photovoltaic assembly. The first connecting part extends along the length direction of the purline body. The width of the middle part region of the first connecting part in the second direction is equal to the width of at least part of the end part region in the second direction. The height of the middle part region is lower than the height of any end part region, so as to form a concave profile structure in the middle part, thereby improving the positioning precision and the structural stability of the assembly. The second connecting part is arranged on the side away from the first connecting part and is used for being fixedly connected with the main shaft, so as to realize stable mounting of the purline structure. The purline structure is simple in structure, high in mounting precision, good in structural stability and suitable for various photovoltaic system mounting scenes.

Description

Technical Field

[0001] This application relates to the field of photovoltaic equipment technology, and further to a purlin structure and mounting assembly. Background Technology

[0002] Existing photovoltaic purlin structures often exhibit dimensional variations in their top support surface design, which can easily lead to uneven local stress distribution, affecting the overall stability and lifespan of the structure. Furthermore, the inconsistent top surface profile increases production difficulty and hinders mass production and standardized operations. Utility Model Content

[0003] To address the aforementioned technical problems, the purpose of this application is to provide a purlin structure and installation components that can effectively solve the problems in the prior art and ensure connection reliability and structural strength.

[0004] To achieve the above objectives, this application provides a purlin structure for fixing photovoltaic modules to a main shaft, comprising: a purlin body, wherein the purlin body includes a first connecting portion and a second connecting portion; The first connecting portion is disposed on the top of the purlin body for connecting with the photovoltaic module. The first connecting portion extends along a first direction and includes a middle region and an end region. The end regions are located on both sides of the middle region along the first direction. The width of the middle region in a second direction is equal to at least a portion of the width of the end regions in the second direction. The second direction is a direction perpendicular to the first direction. The first connecting portion forms a profile with a height difference along the first direction, wherein the height of the middle region in the third direction is lower than the height of any of the end regions in the third direction, and the third direction is a direction perpendicular to both the first direction and the second direction, so that the purlin body forms a profile with a concave center. The second connecting part is disposed on the side of the purlin body away from the first connecting part and is connected to the first connecting part. The second connecting part is used to cooperate with the fixing structure to fix the purlin structure to the main shaft.

[0005] In some embodiments, the second connecting portion includes a connecting body and a connecting end; One side of the connecting body is fixedly connected to the first connecting part, and the side of the connecting body away from the first connecting part is provided with a mating end face. The contour of the mating end face is adapted to the contour of the spindle, so that the mating end face of the connecting body can abut against the spindle. The connecting end is located on the connecting body and is used to cooperate with the fixing structure to achieve detachable fixing of the purlin structure relative to the main shaft.

[0006] In some embodiments, the connecting body extends along the third direction, and the cross-sectional dimension of the connecting body gradually decreases along the third direction from the end closer to the first connecting portion to the end farther away from the first connecting portion, so that the connecting body forms a tapered structure along the third direction.

[0007] In some embodiments, the connecting body includes a first plate and a second plate spaced apart from each other, and the connecting end is disposed on the first plate and / or the second plate; One side of both the first plate and the second plate is fixed to the first connecting portion and extends along the third direction, and an accommodating space suitable for accommodating a fixed structure is formed between the first plate and the second plate.

[0008] In some embodiments, the connecting body further includes a connecting segment disposed between the first plate and the second plate, the connecting segment connecting the first plate and the second plate along the second direction, the first plate and the second plate together forming the overall structure of the connecting body.

[0009] In some embodiments, the connecting segment includes at least two separate segments, which are spaced apart along the first direction between the first plate and the second plate to form at least one opening, the opening being used to allow at least a portion of the fixing structure to pass through the accommodating space; Alternatively, the connecting segment extends along the entire interval between the first plate and the second plate to form a continuous closed side on the connecting body, allowing the fixing structure to be installed from the outside of the accommodating space.

[0010] In some embodiments, the connecting segment transitions to the edge of the first plate and the edge of the second plate to form a smooth contour curve on the connecting body; And / or, the mating end face is provided on the side of the connecting segment away from the first connecting portion, wherein the mating end face protrudes in the direction toward the first connecting portion to form a concave end face profile on the connecting body, so that the purlin structure presents a double-sided concave profile in the third direction.

[0011] In some embodiments, the first connecting part is a closed-loop structure, wherein the inner edge of the closed-loop structure in the circumferential direction is transitionally connected to the edge of the connecting body on the side away from the mating end face; And / or, the first connecting part is provided with at least one connecting point in the end regions on both sides for fixing the photovoltaic module, so that after the photovoltaic module is installed on the purlin structure, a gap is formed between the photovoltaic module and the first connecting part; And / or, at least one reinforcing rib is provided in the bending area formed by the first connecting part and the connecting body.

[0012] Another aspect of this application also provides an installation component, comprising: Purlin structure in any of the above embodiments; A fixed structure is rotatably connected to the second connecting part and can switch between a first state and a second state; wherein, in the first state, the fixed structure can release the connection between the purlin structure and the main shaft; in the second state, the purlin structure is fixed to the main shaft by the fixed structure.

[0013] In some embodiments, the fixing structure includes two clamps and a locking assembly; The two clamping members are pivotally connected to the second connecting part via rotating members, and the locking assembly is disposed between the two clamping members for relative locking when the two clamping members are clamped on the outer periphery of the main shaft.

[0014] Compared with the prior art, the purlin structure and mounting components provided in this application have at least the following advantages: By setting a section at the top of the purlin body that extends along a first direction and whose width in the middle region is equal to the width of at least a portion of the end regions in the second direction, production difficulty is reduced. This ensures consistency in lateral connection dimensions when connected to photovoltaic modules and improves the torsional resistance of the purlin structure, preventing torsional deformation under external forces. Simultaneously, the first connecting portion forms a contour with a height difference along the first direction, giving the purlin body an overall profile that is concave in the middle and raised at both ends. While maintaining the photovoltaic module mounting plane, this enhances the structure's stress transition capacity in the vertical direction, which is beneficial for extending the structure's fatigue life. Attached Figure Description

[0015] The preferred embodiments will now be described in a clear and easy-to-understand manner, in conjunction with the accompanying drawings, to further explain the above-mentioned characteristics, technical features, advantages, and implementation methods of this application.

[0016] Figure 1 This is a schematic diagram of the purlin structure fixed to the main shaft in one embodiment of this application; Figure 2 This is a top view of the purlin structure in one embodiment of this application; Figure 3This is a side view of a purlin structure in one embodiment of this application; Figure 4 This is a schematic diagram of the purlin structure in one embodiment of this application; Figure 5 , Figure 6 These are schematic diagrams of the purlin structure from different perspectives in one embodiment of this application; Figure 7 , Figure 8 These are schematic diagrams of the installation components in different implementations of this application.

[0017] Explanation of icon numbers: Purlin body 1; middle region 101; end region 102; first connecting part 11; connecting point 110; second connecting part 12; connecting body 121; accommodating space 1210; first plate 1211; second plate 1212; connecting section 1213; split section 12131; mating end face 1214; connecting end 122; reinforcing rib 13; fixing structure 2; clamp 21; locking assembly 22; main shaft 3. Detailed Implementation

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the specific implementation methods of this application will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without creative effort.

[0019] To keep the drawings concise, each drawing only schematically shows the parts relevant to the application; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" can mean not only "only one" but also "more than one."

[0020] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0021] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0022] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element 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 this application.

[0023] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] In the installation structure of photovoltaic modules, purlins are key components connecting the modules to the main shaft, and their structural form directly affects installation accuracy, stress stability, and long-term reliable operation of the modules. In existing technologies, to adapt to different types of photovoltaic module clamps or connecting components, purlin structures are mostly designed with a tapered or widened top shape, allowing different parts to provide different connection fits.

[0025] However, this type of non-uniform width top structure presents significant technical challenges in practical applications. Firstly, the variation in the top profile can easily lead to lateral deviations during component installation and positioning, affecting the overall array's alignment and the reliability of subsequent electrical connections. Secondly, the variation in top width results in uneven overall stress distribution, easily causing stress concentrations at abrupt width changes or transition areas. This can lead to structural fatigue or localized damage under prolonged loads or wind loads, reducing the system's structural stability.

[0026] In one embodiment, refer to the appendix to the specification. Figure 1 This application describes a purlin structure that can solve the problems in the prior art and improve the overall stability of the system.

[0027] Reference manual attached Figures 1 to 3The purlin structure provided in this application is suitable for fixing photovoltaic modules to a main shaft 3. The purlin structure includes a purlin body 1, which includes a first connecting portion 11 and a second connecting portion 12.

[0028] The first connecting portion 11 is disposed on the top of the purlin body 1 for connecting with the photovoltaic module. The first connecting portion 11 includes a middle region 101 and an end region 102. The end regions 102 are located on both sides of the middle region 101 along a first direction. The width of the middle region 101 in a second direction is equal to the width of at least a portion of the end regions 102 in the second direction.

[0029] In some embodiments, the first connecting portion 11 extends along the length direction (i.e., the first direction) of the purlin body 1 and has a constant width in the width direction (i.e., the second direction) perpendicular to it. That is, the width of the middle region 101 in the second direction is equal to the width of the two end regions 102 in the second direction.

[0030] In other embodiments, the width of the central region 101 in the second direction is equal to the width of the end regions 102 on both sides in the second direction, and the edges of the end regions 102 can be arc-shaped tapering structures. In other words, the central and end main bodies of the first connecting portion 11 maintain the same width, but the end edges transition into arc-shaped structures, which can reduce local sharp corners or stress concentration areas, and to a certain extent avoid hard collisions between the component and the purlin ends, improving durability and safety.

[0031] In some other embodiments, the width of the central region 101 in the second direction is equal to the width of one end region 102 in the second direction, and the width of the central region 101 in the second direction is greater than the width of the other end region 102 in the second direction. This makes the width of the first connecting portion 11 exhibit an asymmetrical feature, which can be differentiated according to the stress characteristics of the component frame or fastener in the actual installation scenario.

[0032] Furthermore, the first connecting portion 11 forms a profile with a height difference along the first direction, as shown in the appendix to the specification. Figure 3 The height of the central region 101 in the vertical direction (i.e., the third direction) is lower than that of the two end regions 102, so that the purlin body 1 presents a concave structure in the middle (the two end regions 102 are located on both sides of the central region 101 along the first direction).

[0033] In this application, the first connecting portion 11 is disposed on the top of the purlin body 1. The first connecting portion 11 includes a middle region 101 and an end region 102. Therefore, the "the height of the middle region in the third direction is lower than the height of any of the end regions in the third direction" as defined in the claims refers to the height difference between the corresponding positions of the first connecting portion 11 in the middle and end of the purlin body 1.

[0034] Specifically, the aforementioned height refers to the vertical distance from the top of the purlin structure to the bottom of the purlin structure in a third-order direction. For example, the height of the middle region 101 of the purlin body 1 is the vertical distance from the top of the middle region 101 of the purlin body 1 to the bottom of the purlin structure in a third-order direction, and the height of the two end regions 102 of the purlin body 1 is the vertical distance from the top of the two end regions 102 of the purlin body 1 to the bottom of the purlin structure in a third-order direction.

[0035] Therefore, the claim that the height of the central region 101 in the third direction is lower than the height of any end region 102 actually reflects that the top surface of the purlin body 1 is lower in the central position than at the end position, thereby forming a concave profile in the first direction.

[0036] In this embodiment, the width of the central region 101 in the second direction is equal to the width of at least part of the end region 102 in the second direction. This provides a more consistent installation reference surface for the photovoltaic modules during installation, which is beneficial for accurate positioning and orderly arrangement of the modules. At the same time, compared with the structure form of the top gradient or abrupt contour, the equal width of the central region 101 and at least part of the end region 102 can significantly improve the torsional rigidity of the purlin in the width direction, which helps to suppress the torsional deformation caused by the module load or wind load, enhance the lateral stability and wind resistance of the overall structure, and improve the reliability of the photovoltaic support system in actual use.

[0037] In addition, the concave profile of the purlin body 1 in this embodiment can disperse the concentrated load transmitted along the first direction, reduce the stress concentration problem caused by the long-term action of external forces such as wind pressure and component gravity on the purlin structure, and thus improve the long-term stability of the overall on-site structure.

[0038] Specifically, after photovoltaic modules are installed on the purlin structure, the middle part of the purlin is often a region prone to deformation accumulation under long-term wind loads or the weight of the modules themselves. By appropriately lowering the middle part of the purlin structure, it can have a certain structural buffer space in its initial state, which can effectively reduce the sudden increase in deformation caused by concentrated stress, thus helping to extend the fatigue life of the structure and improve operational stability.

[0039] Secondly, through the concave contour in the middle of the first connecting part 11 in this embodiment, a certain amount of porosity will naturally form between the first connecting part 11 and the bottom surface of the photovoltaic module after the module is installed. Although the photovoltaic module blocks direct rainfall from above, problems such as condensation, dust accumulation, and dust deposition may still occur between the bottom surface of the module and the purlin. If the first connecting part 11 and the photovoltaic module are completely fitted together, a sealed area can easily be formed, affecting heat exchange efficiency. The structural gap formed by the concave shape can guide airflow at the bottom of the module, enhance ventilation, and thus improve heat dissipation capacity, mitigating the efficiency degradation problem caused by local temperature rise in the module.

[0040] Based on the above embodiments, optionally, the first connecting portion 11 may have at least one connecting point 110 on each of its two end regions 102 for use in the fixed installation of the photovoltaic module. After installation, a certain gap space is formed between the bottom surface of the photovoltaic module and the central recessed area of ​​the first connecting portion 11 to form an effective ventilation or dehumidification gap, enhance the bottom heat dissipation efficiency, and reduce the risk of the module getting damp, thereby extending the system's operating life.

[0041] Furthermore, to improve the robustness and alignment accuracy of the component connection, the top surface of the first connection part 11 may be provided with several limiting protrusions or ribs to assist in positioning the photovoltaic module frame and avoid the accumulation of installation errors.

[0042] In this embodiment, the second connecting part 12 is disposed on the side of the purlin body 1 away from the first connecting part 11, and is connected to the first connecting part 11. The second connecting part 12 is used to securely install the purlin structure onto the main shaft 3 below. Thus, through the structural cooperation between the first connecting part 11 and the second connecting part 12, the purlin structure not only meets the installation requirements of photovoltaic modules, but also has a good force transmission path and construction adaptability, thereby improving installation efficiency and structural stability.

[0043] In one feasible implementation, the second connecting part 12 can be designed as an integrally bent connection with the first connecting part 11, or it can be integrated with the first connecting part 11 by welding or mechanical connection, etc., without specific limitations in this embodiment.

[0044] Based on the above embodiments, in one embodiment, the second connecting part 12 includes a connecting body 121 and a connecting end 122. One side of the connecting body 121 is connected to the first connecting part 11, forming the main load-bearing structure. The side of the connecting body 121 away from the first connecting part 11 is provided with a mating end face 1214. The mating end face 1214 serves as a positioning interface that contacts the spindle 3. Its contour is adapted to the shape of the spindle 3, so that during installation, the connecting body 121 can be pressed vertically downwards or laterally abutted to make its mating end face 1214 tightly adhere to the surface of the spindle 3. This is beneficial for achieving rapid alignment and pre-positioning in the initial positioning stage, while also ensuring that the load is evenly transmitted to the spindle 3 along the contact surface, thereby improving the overall load-bearing safety.

[0045] The connecting end 122 is located on the connecting body 121 and is used to connect with the external fixing structure 2 to complete the detachable connection of the purlin structure relative to the main shaft 3. For example, the fixing structure 2 can be installed on the connecting end 122 to form an integrated component at the factory, which speeds up the subsequent installation. After the construction personnel position the mating end face 1214 of the connecting body 121 on the surface of the main shaft 3, they can directly tighten it through the corresponding fixing structure 2 on the connecting end 122 to achieve quick docking and stable fixation during the installation process.

[0046] It should be noted that the connecting end 122 can adopt various structural forms and be specifically set according to the actual installation method and force requirements to adapt to the matching requirements of different types of spindles 3 and fixing components. In one embodiment, the connecting end 122 can be a through hole structure set on the connecting body 121. The through hole penetrates the plate of the connecting body 121. During construction, bolts or screws can be inserted through the through hole and matched with the corresponding reserved holes on the spindle 3 to complete the mechanical fixing.

[0047] In other embodiments, the connecting end 122 may be a snap-fit ​​structure located on the lower edge or side edge of the connecting body 121. This snap-fit ​​structure engages with the protrusion or corresponding structure on the spindle 3 in a snap-fit ​​manner, achieving initial positioning and self-locking fixation without the need for external fasteners. Of course, the structure can be reinforced with fasteners to ensure vibration and pull-out resistance.

[0048] Of course, multiple sets of connecting ends 122 can be provided, each corresponding to multiple contact points of the spindle 3, forming multi-faceted contact and cooperation, thereby improving the stability and anti-displacement capability of the connecting parts.

[0049] In one embodiment, based on the design of the above embodiments, such as Figure 3As shown, the connecting body 121 extends along the third direction (i.e., the vertical direction), and the cross-sectional dimensions of the connecting body 121 change along the third direction. Specifically, its cross-sectional dimensions gradually decrease from the end near the first connecting part 11 to the end away from the first connecting part 11, so that the connecting body 121 as a whole forms a tapered structure in the third direction.

[0050] Understandably, in this embodiment, the tapered structure has a larger cross-section at the end of the connecting body 121 near the first connecting part 11, which can form a reliable connection with the photovoltaic module; while the cross-section at the end near the main shaft 3 is relatively smaller, making it easier for the mating end face 1214 on the second connecting part 12 to fit or adhere to the surface of the main shaft 3. Thus, this design makes the stiffness distribution in the vertical direction gradually change from strong to weak, avoiding the stress concentration phenomenon caused by abrupt changes in stiffness in conventional structures.

[0051] During the transfer of load from the purlin structure to the main shaft 3, the force will be continuously transmitted along the interior of the connecting body 121. The tapered structure allows the stress transmission path in the longitudinal direction to gradually converge and diffuse, which helps to build a continuous and stable force chain. The stepwise contraction of the structure's cross-section makes it easier for the contact area to form a multi-faceted fit, improving the adaptability of the connecting body 121 under different installation angles. Especially when there are slight manufacturing deviations in the components, the narrowed structure at the end is more likely to press against the surface of the main shaft 3 to form a substantial contact, which is conducive to forming a stable contact interface and avoiding bias pressure or local wear caused by poor contact.

[0052] Furthermore, the tapered end of the structure, due to its smaller size, provides better guidance during actual installation, offering preliminary self-positioning before complete tightening, which helps in rapid docking and improved installation accuracy. After being tightened by the fixing structure 2, all layers of the connecting body 121 will form a uniform fit on the main shaft 3, thereby ensuring high stability and good fatigue resistance of the overall structure.

[0053] In one embodiment, such as Figure 4 As shown, the connecting body 121 includes a first plate 1211 and a second plate 1212 that are spaced apart from each other. The two plates are arranged opposite to each other and together constitute the main structure of the connecting body 121.

[0054] Specifically, one side of the first plate 1211 and the second plate 1212 are respectively fixed to the first connecting part 11 and extend in the vertical direction (i.e., the third direction) relative to the first connecting part 11. The interval area formed between the first plate 1211 and the second plate 1212 constitutes a receiving space 1210 for accommodating the fixing structure 2. The connecting end 122 is provided on the first plate 1211 and / or the second plate 1212 to cooperate with bolts, clamps, clips or other fixing structures 2 suitable for connecting with the spindle 3.

[0055] Understandably, in this embodiment, by setting the first plate 1211 and the second plate 1212, the overall stability and torsional stiffness of the connecting body 121 in the vertical direction are enhanced to a certain extent. On the one hand, the two plates can form a double-sided support, making the load more symmetrical and stable during the transmission to the main shaft 3; on the other hand, the accommodating space 1210 formed between the plates provides good structural fitting conditions, which can accommodate a variety of fixing structures 2, including screws, bolts, sliding pins or other specific connecting parts, and has high compatibility and flexibility.

[0056] In addition, the arrangement of the accommodating space 1210 facilitates the layout and adjustment of the fixed structure 2. During on-site construction, workers can insert or position the connectors between the first plate 1211 and the second plate 1212, thereby achieving rapid installation and convenient disassembly.

[0057] In addition, in this embodiment, the connecting end 122 is disposed on the first plate 1211 and / or the second plate 1212. Since both the first plate 1211 and the second plate 1212 can serve as the base surface for arranging the connecting end 122, the connecting end 122 can be arranged on one side or both sides simultaneously according to the specific position, size or force requirements of the spindle 3, thereby adapting to different installation environments.

[0058] Based on the above embodiments, the first plate 1211 and the second plate 1212 are not limited to being arranged in parallel (as shown in the attached figures), and can also be arranged in a non-parallel state, that is, when they extend in space along a third direction, they have a certain angle relationship. This angle can be a fixed angle, or it can be set as an adjustable angle structure according to installation requirements, so that the connecting body 121 varies in the thickness direction.

[0059] Specifically, the distance between the first plate 1211 and the second plate 1212 can gradually increase or decrease along a third direction to adapt to different shapes of the spindle 3 or meet the connection requirements under special installation conditions, so that the mating end face 1214 produces a more uniform fit when pressed against the spindle 3. In addition, this structural form can also enhance the deformation resistance of the connecting body 121 in a specific direction and prevent the connection part from deforming when subjected to wind loads, temperature changes or the self-weight of the component.

[0060] Based on the above, such as Figure 5 As shown, in one embodiment, at least one reinforcing rib 13 is provided in the bending area formed by the first connecting part 11 and the connecting body 121. The reinforcing rib 13 can be a protruding rib arranged along the bend line direction. Specifically, multiple reinforcing ribs 13 can be arranged along the first direction, and the multiple reinforcing ribs 13 can be arranged continuously or at intervals.

[0061] Understandably, the stiffener 13 is placed at the corner to thicken the structure and increase its rigidity, preventing the corner from becoming a potential weak point due to changes in angle. On the other hand, the local reinforcement of the stiffener 13 can effectively disperse the force when subjected to actual stress, thereby suppressing the risk of crack propagation or buckling of the component under conditions such as wind pressure and vibration, and enhancing the long-term stability of the system.

[0062] In one embodiment, the connecting body 121 further includes a connecting segment 1213 disposed between the first plate 1211 and the second plate 1212. The connecting segment 1213 connects the first plate 1211 and the second plate 1212 along a second direction. The connecting segment 1213, together with the first plate 1211 and the second plate 1212, forms the overall structure of the connecting body 121. The connecting segment 1213 extends along the thickness direction of the connecting body 121, thereby connecting and reinforcing the two plates in the thickness direction (i.e., within the interval defined between the two plates). The connecting segment 1213 can be a continuous plate structure, or it can be a spaced reinforcing rib, frame strip, or multi-segment connection form according to actual stress requirements.

[0063] By setting the connecting section 1213, the connecting body 121 is transformed from two independent plates arranged at intervals to an integrated component with a certain closed boundary, which significantly enhances the overall stiffness of the connecting body 121 in the torsional and lateral directions. When the purlin structure is subjected to multi-directional combined action such as component load and wind load, it can effectively suppress warping, offset or relative twisting of the connecting part.

[0064] Furthermore, the thickness, height, and arrangement of the connecting section 1213 can be designed differently according to the load distribution borne by the connecting body 121. For example, a reinforcing section can be provided in the area near the first connecting part 11 or on the side near the main shaft 3 to improve the local strength of the connecting body 121.

[0065] In one embodiment, refer to the appendix to the specification. Figure 5 and attached Figure 6 The connecting segment 1213 is a continuous structure that extends along the entire interval area between the first plate 1211 and the second plate 1212 to form a complete and continuous closed side.

[0066] Through the design of this embodiment, the connecting segment 1213 achieves full coverage in the circumferential direction of the connecting body 121 without leaving gaps, so that the operator can achieve cooperative connection with the fixed structure 2 only through the through holes, threaded holes or slots provided on the connecting body, which helps to improve the torsional stiffness and lateral deformation resistance of the overall structure.

[0067] Based on the above embodiments, in another alternative embodiment, such as Figure 4As shown, the connecting section 1213 includes at least two independent separate sections 12131, which are spaced apart along a first direction between the first plate 1211 and the second plate 1212, forming at least one opening area between adjacent separate sections 12131. The opening allows the fixing structure 2 to at least partially penetrate into the receiving space 1210, enabling the fixing structure 2 to be inserted from the outside and quickly installed and positioned between the two plates.

[0068] This structural design ensures the structural support function of the connecting section 1213 while providing necessary operating openings. This facilitates the installation, locking, or disassembly of the fixed structure 2 in confined spaces, enhancing the convenience and adaptability of on-site construction. In practical applications, the number, spacing, and dimensions of the split sections 12131 can be adjusted according to the type of the fixed structure 2 and the spatial routing method. This ensures that the opening areas meet the needs of inserting and operating the fixed structure 2 without weakening the overall supporting capacity of the connecting body 121, thus balancing installation flexibility and structural stability.

[0069] Based on the above, please refer to the attached instruction manual. Figure 7 The connecting segment 1213 includes three independent separate segments 12131, which are symmetrically arranged on the connecting body 121, thus forming two openings on the connecting body 121. One of the aforementioned separate segments 12131 is located in the central region 101 of the connecting body 121 and is used to correspond to the main shaft 3, so that it can form direct or indirect surface contact with the main shaft 3 after installation, thereby enhancing the vertical stability and force transmission continuity of the overall structure in the connecting area.

[0070] The other two separate segments 12131 are connected to the first connecting part 11 respectively, ensuring a stable transition between the two side boundary areas of the connecting body 121 and the first connecting part 11, so that the fixing structure 2 (such as the clamp 21 described later) can be inserted into the accommodating space 1210 of the connecting body 121 through these two openings, thereby completing the assembly connection inside the purlin structure.

[0071] It should be noted that the two structural forms mentioned above each have their own advantages in terms of functional positioning. The latter setting is mainly for realizing the built-in connection and fixing structure 2 (see attached). Figure 7 The first option allows the fixed structure 2 to be hidden inside the purlin structure; the second option primarily enables external connection of the fixed structure 2 (see attached diagram). Figure 8 The design places greater emphasis on the structural integrity of the purlin structure. By selecting the appropriate purlin type under different application conditions, the diversity and adaptability of the connection method between the purlin structure and the main shaft 3 can be effectively improved, ensuring the overall stability, reliability and maintainability of the photovoltaic module system.

[0072] Optional, such as Figure 5 As shown, the connecting segment 1213 is connected to the edge of the first plate 1211 and the edge of the second plate 1212 in a transitional manner, thereby avoiding the formation of sharp corners in the structure and making the connecting body 121 form a continuous and smooth structural outline.

[0073] Understandably, this transitional connection in this embodiment enables the connecting body 121 to have higher continuity and integrity in its overall structural form, effectively reducing stress concentration caused by geometric abrupt changes. When the purlin structure is subjected to bending, compression or torsional loads, it can form a more flexible force transmission path, avoiding local cracks, fatigue accumulation or early failure at the edges of the plate and connecting section 1213.

[0074] Based on the above, the mating end face 1214 of the connecting body 121 is set on the side of the connecting segment 1213 that is away from the first connecting part 11, and the mating end face 1214 protrudes in the direction of the first connecting part 11, so that it forms an inwardly recessed end face profile on the connecting body 121. This enables the connecting body 121 to form a clear contact reference surface during the fitting process with the spindle 3, thereby improving the positioning accuracy and stability of the overall installation.

[0075] Specifically, the end face 1214 extends into the connecting body 121 in a partially concave manner, forming a concave structure that is slightly contracted relative to the outer boundary. This causes the connecting body 121 to exhibit a locally converging trend in the area near the main shaft 3. Combined with the concave setting of the first connecting part 11, the purlin structure as a whole has a double-sided concave shape in the vertical direction, which creates a natural force transmission path. This helps to reduce stress concentration caused by structural abrupt changes and can effectively alleviate the structural fatigue and local indentation risk of the end area 102.

[0076] In addition, since the mating end face 1214 can naturally form an inward positioning port, the spindle 3 can be partially embedded or abutted against the concave area during installation, which helps to suppress the risk of lateral slippage or misalignment and improve connection accuracy.

[0077] In one embodiment, the first connecting part 11 is a closed-loop structure, and the inner edge of the closed-loop structure along the circumferential direction is simultaneously connected to the edge of the connecting body 121 away from the mating end face 1214, so that the first connecting part 11 and the connecting body 121 are constructed as an integrally formed and structurally continuous whole.

[0078] like Figure 6As shown, the closed-loop structure is a rectangular closed-loop outline, and its internal boundary is connected to the corresponding edge areas of the connecting section 1213, the first plate 1211 and the second plate 1212. By designing the first connecting part 11 as a closed-loop structure, the overall strength and structural stability of the entire purlin structure in the first connecting part 11 area can be effectively improved, forming a complete force transmission path. The load applied by the photovoltaic module after installation can be evenly distributed to each part of the connecting body 121 through the closed-loop structure, thereby avoiding the problem of local buckling or fatigue failure caused by single-point concentrated force.

[0079] Meanwhile, due to the closed-loop structure having a closed boundary, its torsional stiffness and deformation resistance are also significantly enhanced, enabling it to maintain a stable connection state under long-term exposure to wind pressure, temperature difference, or vibration of photovoltaic modules.

[0080] In actual manufacturing, the purlin structure can be made from sheet metal, and the overall structure can be formed through stamping, bending, rolling, extrusion, etc. Specifically, when forming the connecting body 121, a sheet metal can be stamped at least once to create a local protrusion structure in a predetermined area, forming a "boat-shaped" or groove-shaped recessed area. This recessed area corresponds to the accommodating space 1210 provided within the connecting body 121. On the two side walls of this space, a first sheet metal 1211 and a second sheet metal 1212 are formed respectively, thus providing a foundation for the opening of the connecting end 122.

[0081] Specifically, operators can use one or more combined stamping operations to simultaneously form the first connecting part 11 and the connecting body 121 in the same stamping die, thereby improving manufacturing efficiency and ensuring the structural continuity and connection strength of the two. Alternatively, the main body plate can be pre-stamped to obtain the approximate shape of the connecting body 121, and then subsequent processes can be performed to press the first connecting part 11 separately to adapt to different structural dimensions, forming complexity, or material property requirements.

[0082] In one embodiment, refer to the specification. Figure 1 , Figure 7 and Figure 8 According to another aspect of this application, this application further provides an installation component, including the purlin structure of any of the foregoing embodiments and a fixing structure 2 that cooperates with it. The fixing structure 2 is rotatably connected to the second connecting portion 12 of the purlin structure and can switch between a first state and a second state. When the fixing structure 2 is in the first state, it can release the structural constraint between the purlin structure and the main shaft 3, thereby releasing the connection between the two; while in the second state, the fixing structure 2 locks or clamps the purlin structure relative to the main shaft 3, so that the purlin structure can be stably installed on the main shaft 3.

[0083] Through the above structural design, the fixing structure 2, as an operable component for connecting and disconnecting the purlin structure and the main shaft 3, directly determines the connection state of the installation components through changes in its state, thereby achieving flexible and efficient on-site installation and disassembly operations. During on-site operations, the operator can switch the fixing structure 2 from the first state to the second state as needed, quickly fixing the purlin structure and the main shaft 3. If disassembly or repositioning is required, simply switching the fixing structure 2 back to the first state will disconnect the existing connection.

[0084] It should be noted that, in the specific implementation process, the fixed structure 2 can adopt a variety of structural forms with movable connection functions to adapt to the geometric shape and installation requirements of different spindles 3, such as snap-fit, plug-in or magnetic connection and other similar detachable connection methods. Those skilled in the art can make adaptive adjustments based on the construction scenario and specific circumstances.

[0085] In one embodiment, the fixing structure 2 includes two clamping members 21 and a locking assembly 22. The two clamping members 21 are pivotally connected to the second connecting portion 12 of the purlin structure via rotating members. Specifically, the rotating members can be disposed at the connecting end 122 of the connecting body 121, so that during installation, each clamping member 21 can rotate and open and close around the outer periphery of the main shaft 3 about the corresponding rotating member. The locking assembly 22 is used to lock the two clamping members 21 relative to each other after they are closed around the main shaft 3 to a predetermined clamping position, thereby stably fixing the purlin structure to the main shaft 3.

[0086] Understandably, during use, when the clamping members 21 are in the released state (not locked by the locking component 22), they can be flipped outwards around the rotating member to form an open structure, facilitating the placement of the entire purlin structure onto the main shaft 3 from above. During installation, the rotating member allows the two clamping members 21 to retract around the main shaft 3, and after they are in contact with the outer circumferential surface of the main shaft 3, a stable connection between them is achieved through the locking component 22. The locking component 22 can take various forms, such as bolt assemblies, quick-release pins, or elastic locks. Generally, the locking component 22 is positioned between the free ends of the two clamping members 21 to ensure sufficient radial locking force in the closed state and to resist the tendency to open caused by external forces.

[0087] In one embodiment of this application, the locking assembly 22 includes a bolt and a nut, which are respectively disposed between the free ends of the two clamping members 21 and cooperate with each other to form a threaded connection structure. During installation, by tightening the nut, the free ends of the two clamping members 21 can be gradually brought closer together, thereby clamping the main shaft 3 and keeping the entire purlin structure stable relative to the main shaft 3.

[0088] Correspondingly, by loosening the nut, the locking state can be released, the clamping relationship between the clamping members 21 can be released, and the purlin structure can be detached and installed. In this way, by using threaded locking, the reusability and adjustability of the installation components can be improved, and the required clamping force and fixing strength can be effectively provided.

[0089] Furthermore, in the actual manufacturing and assembly process, the purlin structure and fixing structure 2 can be pre-assembled in the factory. That is, when the finished product leaves the factory, the purlin structure, the two clamps 21, and the locking assembly 22 can form a complete integrated installation assembly. This not only helps reduce the complexity of component management and assembly during on-site construction, but also significantly reduces reliance on construction tools and time spent working at heights, shortening the overall installation cycle. At the same time, the integrated structure after assembly facilitates unified packaging and transportation, reduces the risk of lost parts, and can be used directly on-site, avoiding rework caused by mismatched components or incorrect installation sequence.

[0090] Based on the design of this application, the purlin structure and mounting components are applicable to the installation of purlins relative to the main shaft. Specifically, in practical applications, the main shaft in the photovoltaic bracket serves as the main shaft 3 in this application. Since the main shaft typically has a cylindrical or near-circular cross-section, two clamping members 21, pivotally connected by rotating components, can reliably cover its outer circumference, forming a stable circumferential clamping structure. After being retracted and closed, the fixing structure 2 forms complete contact with the main shaft and provides sufficient clamping force through the locking component 22, ensuring the purlin structure's positional stability and anti-rotation capability in the main shaft direction.

[0091] It should be noted that the above embodiments can be freely combined as needed. The above are merely preferred embodiments of this application. It should be pointed out that for those skilled in the art, several improvements and modifications can be made without departing from the principles of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A purlin structure, characterized in that, For fixing photovoltaic modules to a main shaft, it includes: a purlin body, the purlin body including a first connecting part and a second connecting part; The first connecting portion is disposed on the top of the purlin body for connecting with the photovoltaic module. The first connecting portion extends along a first direction and includes a middle region and an end region. The end regions are located on both sides of the middle region along the first direction. The width of the middle region in a second direction is equal to at least a portion of the width of the end regions in the second direction. The second direction is a direction perpendicular to the first direction. The first connecting portion forms a profile with a height difference along the first direction, wherein the height of the middle region in the third direction is lower than the height of any of the end regions in the third direction, and the third direction is a direction perpendicular to both the first direction and the second direction, so that the purlin body forms a profile with a concave center. The second connecting part is disposed on the side of the purlin body away from the first connecting part and is connected to the first connecting part. The second connecting part is used to cooperate with the fixing structure to fix the purlin structure to the main shaft.

2. The purlin structure according to claim 1, characterized in that, The second connecting part includes a connecting body and a connecting end; One side of the connecting body is fixedly connected to the first connecting part, and the side of the connecting body away from the first connecting part is provided with a mating end face. The contour of the mating end face is adapted to the contour of the spindle, so that the mating end face of the connecting body can abut against the spindle. The connecting end is located on the connecting body and is used to cooperate with the fixing structure to achieve detachable fixing of the purlin structure relative to the main shaft.

3. The purlin structure according to claim 2, characterized in that, The connecting body extends along the third direction, and the cross-sectional dimension of the connecting body gradually decreases along the third direction from the end closer to the first connecting portion to the end farther away from the first connecting portion, so that the connecting body forms a tapered structure along the third direction.

4. The purlin structure according to claim 2 or 3, characterized in that, The connecting body includes a first plate and a second plate spaced apart from each other, and the connecting end is disposed on the first plate and / or the second plate; One side of both the first plate and the second plate is fixed to the first connecting portion and extends along the third direction, and an accommodating space suitable for accommodating a fixed structure is formed between the first plate and the second plate.

5. The purlin structure according to claim 4, characterized in that, The connecting body further includes a connecting segment disposed between the first plate and the second plate. The connecting segment connects the first plate and the second plate along the second direction. The first plate and the second plate together form the overall structure of the connecting body.

6. The purlin structure according to claim 5, characterized in that, The connecting segment includes at least two independent split segments, which are spaced apart between the first plate and the second plate along the first direction to form at least one opening, which allows at least a portion of the fixing structure to pass through the accommodating space. or, The connecting segment extends along the entire interval between the first plate and the second plate to form a continuous closed side on the connecting body, so that the fixing structure can be installed from the outside of the accommodating space.

7. The purlin structure according to claim 6, characterized in that, The connecting segment transitions to the edge of the first plate and the edge of the second plate to form a smooth contour curve on the connecting body; And / or, The mating end face is provided on the side of the connecting segment away from the first connecting portion, wherein the mating end face protrudes in the direction toward the first connecting portion to form a concave end face profile on the connecting body, so that the purlin structure presents a double-sided concave profile in the third direction.

8. The purlin structure according to any one of claims 5-7, characterized in that, The first connecting part is a closed-loop structure, wherein the inner edge of the closed-loop structure along the circumferential direction is transitionally connected to the edge of the connecting body on the side away from the mating end face; And / or, The first connecting part has at least one connecting point in the end area on both sides, which is used to cooperate with the fixed installation of the photovoltaic module, so that after the photovoltaic module is installed to the purlin structure, a gap is formed between the photovoltaic module and the first connecting part; And / or, At least one reinforcing rib is provided in the bending area formed by the first connecting part and the connecting body.

9. An installation component, characterized in that, include: The purlin structure according to any one of claims 1-8; A fixed structure is rotatably connected to the second connecting part and can switch between a first state and a second state; wherein, in the first state, the fixed structure can release the connection between the purlin structure and the main shaft; in the second state, the purlin structure is fixed to the main shaft by the fixed structure.

10. The mounting assembly according to claim 9, characterized in that, The fixing structure includes two clamps and a locking assembly; The two clamping members are pivotally connected to the second connecting part via rotating members, and the locking assembly is disposed between the two clamping members for relative locking when the two clamping members are clamped on the outer periphery of the main shaft.

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