Purlin, mounting bracket and photovoltaic device

Abstract

The application relates to a purlin, a mounting support and a photovoltaic device, the purlin comprising: a bottom plate part extending longitudinally along a first direction; two side plate parts respectively arranged on two sides of the bottom plate part in a second direction; two flange parts extending away from each other along the second direction, each flange part having two mounting surfaces arranged at an intersection on a side away from the bottom plate part; and an attached wing part arranged on at least one flange part and located at the intersection of the two mounting surfaces of the flange part, the attached wing part being connected to the two mounting surfaces respectively; the purlin, the mounting support and the photovoltaic device form a reinforced area at the bottom of the flange part through the attached wing part, thereby strengthening the structure of the part where the stress of the purlin is concentrated, and avoiding the problems of bending and twisting damage of the purlin by strengthening the structural strength of the key stress part, so that the wind load resistance of the photovoltaic device is effectively improved.

Description

Technical Field

[0001] This application relates to the field of photovoltaic technology, and in particular to a purlin, mounting bracket and photovoltaic equipment. Background Technology

[0002] With the adjustment of the global energy structure and the rapid development of renewable energy, photovoltaic power generation, as an important component of clean energy, is being widely used worldwide. To improve the power generation efficiency of photovoltaic power plants, photovoltaic tracking bracket technology has emerged. This technology adjusts the angle of photovoltaic modules to better track the sun's trajectory, maximizing the reception of solar radiation energy and thus increasing power generation.

[0003] Currently, in photovoltaic (PV) tracking systems, purlins, as key components connecting the main beam and PV modules, are typically bolted directly to the main beam and used to drive the rotation of the PV modules. However, the commonly used purlins have an open structure with an inverted V-shape or C-shape cross-section. This not only results in lower overall strength, but also, because the opening faces upwards, the parts of the purlins that support the module frame are highly susceptible to deformation under wind loads, even bending and twisting. This not only damages the PV system but also significantly increases maintenance costs. Utility Model Content

[0004] Therefore, it is necessary to provide a purlin, mounting bracket, and photovoltaic equipment to address the current problem of low purlin strength and easy deformation.

[0005] A purlin includes:

[0006] The base plate extends longitudinally along the first direction;

[0007] Two side plates are respectively located on both sides of the bottom plate in the second direction;

[0008] Two flange portions are respectively provided at the ends of the two side plates that are away from the bottom plate in a third direction, and the two flange portions extend away from each other in the second direction. The side of each flange portion away from the bottom plate is recessed toward the bottom plate to form two intersecting mounting surfaces.

[0009] An auxiliary wing is provided on at least one of the flange portions and located at the intersection of two mounting surfaces of the flange portion, wherein the auxiliary wing portion is connected to the two mounting surfaces respectively;

[0010] Wherein, the first direction, the second direction, and the third direction intersect each other but are not coplanar.

[0011] In one embodiment, on the side away from the side plate portion in the second direction, a portion of the edge of the flange portion is folded in a direction away from the bottom plate portion to form the attached wing portion.

[0012] In one embodiment, the side of the flange portion away from the side plate is recessed in the direction toward the side plate portion and forms two intersecting flange surfaces.

[0013] In one embodiment, a recessed space is formed in the middle of the side of the bottom plate away from the side plate in the first direction, the recessed space being used to mate with the outer surface of the main beam.

[0014] An installation bracket includes a connector, a main beam, and a purlin as described in any of the preceding claims, the connector being used to mount the purlin to the main beam.

[0015] In one embodiment, the base plate has two mounting holes spaced apart along a first direction. The connector includes a connecting arm and two fixing arms. The connecting arm is located between the two side plates. The two fixing arms are respectively located at both ends of the connecting arm in its longitudinal direction and pass through the two mounting holes. Each fixing arm has a fastening hole at the end away from the connecting arm.

[0016] The main beam extends longitudinally along the second direction and has positioning holes on both sides in the first direction;

[0017] The mounting bracket further includes a first fastener, which passes through the fastening hole and is fixed in the positioning hole.

[0018] In one embodiment, at least one edge of the connecting arm and / or the fixed arm in the second direction is turned outward toward a direction away from the main beam to form a connecting sidewall.

[0019] In one embodiment, the mounting bracket further includes a support member that passes between the two side plates and has multiple support holes. Each flange portion has flange holes at both ends in a first direction, and each flange hole is aligned with one of the support holes.

[0020] In one embodiment, the support member includes a first support portion, two second support portions, and two third support portions. The first support portion extends longitudinally along the first direction. The two second support portions are respectively disposed on both sides of the first support portion in the second direction. The two third support portions are respectively disposed at the ends of the two support portions in the second direction away from the base plate portion and extend away from each other. The third support portion is provided with the support hole.

[0021] A photovoltaic device includes a mounting bracket as described in any of the preceding claims.

[0022] The aforementioned purlins, mounting brackets, and photovoltaic equipment form a reinforced zone at the bottom of the flange through the attached wing section, thereby strengthening the structure of the purlins in areas where stress is concentrated. By strengthening the structural strength of key stress-bearing parts, the problems of bending and twisting damage to the purlins are avoided, effectively improving the wind load resistance of the photovoltaic equipment. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the purlin structure in some embodiments of this application.

[0024] Figure 2 for Figure 1 Side view of the purlin in the embodiment.

[0025] Figure 3 for Figure 1 A top view of the purlin in the embodiment.

[0026] Figure 4 This is a schematic diagram of the mounting bracket structure in some embodiments of this application.

[0027] Figure 5 for Figure 4 An exploded view of the mounting bracket in the embodiment.

[0028] Figure 6 for Figure 4 A schematic diagram of the middle connector.

[0029] Figure 7 for Figure 4 Schematic diagram of the main beam.

[0030] Figure 8 This is a schematic diagram of the structure of a photovoltaic device in some embodiments of this application.

[0031] Figure 9 for Figure 8 A schematic diagram of the structure of a photovoltaic device from another perspective.

[0032] Figure 10 for Figure 8 A schematic diagram of the structure of a photovoltaic device from another perspective.

[0033] Explanation of reference numerals in the attached figures;

[0034] Purlin 100;

[0035] Base plate 110; recessed space 101; mounting hole 111; supporting end face 112; protrusion 113; inner arc surface 114;

[0036] Side panel 120;

[0037] Flange portion 130; Mounting surface 131; Support surface 132; Flange hole 133;

[0038] 140 for the wing section; 141 for the wing flange;

[0039] Main beam 200; positioning hole 210; chamfered surface 220;

[0040] Connector 300; Connecting arm 310; Connecting end 311; Fastening hole 312; Fixing arm 320; Connecting sidewall 330;

[0041] First fastener 400; Second fastener 410;

[0042] Support member 500; support hole 510; first support part 520; second support part 530; third support part 540;

[0043] Photovoltaic module 600;

[0044] First direction X; second direction Y; third direction Z. Detailed Implementation

[0045] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0046] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and 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.

[0047] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0048] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0049] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0050] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0051] See Figure 1 , Figure 4 and Figure 8 An embodiment of this application provides an installation bracket for supporting a photovoltaic module 600, and includes purlins 100 and a main beam 200. The purlins 100 connect the main beam 200 and the photovoltaic module 600, thereby fixing the photovoltaic module 600 on the main beam 200. In actual use, the main beam 200 can rotate with the sun's position. During rotation, the main beam 200 can drive the photovoltaic module 600 to rotate together via the purlins 100, thereby adjusting the angle of the photovoltaic module 600 and ensuring the photovoltaic module 600's efficiency in receiving solar radiation.

[0052] Among them, see Figure 1 , Figure 2 and Figure 3The purlin 100 includes a base plate 110, two side plates 120, and two flanges 130. The base plate 110 extends longitudinally along a first direction X, and there is a height difference between the two ends of the base plate 110 and the middle part of the base plate 110 in a third direction Z, thus making the base plate 110 a V-shaped structure. The two side plates 120 are respectively disposed on both sides of the base plate 110 in a second direction Y, so that the two side plates 120 and the base plate 110 form an open cavity. The two ends of the cavity in the first direction X are open. By using the open cavity method, the structural strength of the purlin 100 is ensured while reducing the material required to manufacture the purlin 100 and improving the production efficiency of the purlin 100.

[0053] One end of each of the two flange portions 130 is located at the end of each of the two side plate portions 120 in the third direction Z, away from the bottom plate portion 110. The other end extends longitudinally in the direction away from the side plate portion 120, so that the two flange portions 130 extend away from each other in the second direction Y, thereby making the cross-section of the entire purlin 100 present a "V" structure. Furthermore, the side of each flange portion 130 away from the bottom plate portion 110 is recessed towards the bottom plate portion 110 to form two intersecting mounting surfaces 131. That is, in conjunction with the "V" structure of the bottom plate portion 110, the flange portion 130 as a whole also has a "V" shape, and the intersection angle of the two mounting surfaces 131 is between 140° and 160°.

[0054] In this design, each flange 130 has two ends connected to the photovoltaic module 600 in the first direction X, while the base plate 110 is mounted on the main beam 200, thus connecting the photovoltaic module 600 and the main beam 200 via purlins 100. In actual use, when the photovoltaic module 600 is mounted on the main beam 200 via purlins 100, the photovoltaic module 600 experiences pressure towards the purlins 100 due to its own weight or external factors such as wind. This pressure is first applied to the flange 130 connected to the photovoltaic module 600. Since both ends of the flange 130 are connected to the photovoltaic module 600, the stress at both ends of the flange 130 is relatively small, serving only as a connection and support for the module. The purlin 100 experiences a larger stress concentration in the area near and connecting to the main beam 200, meaning that stress concentration occurs at the connection point of the two mounting surfaces 131.

[0055] To this end, the purlin 100 also includes two fins 140, each located on one of the two flanges 130. Each fin 140 is situated at the intersection of the two mounting surfaces 131 of the flange 130 and is connected to both mounting surfaces 131. Thus, by forming a reinforcing zone at the bottom of the flange 130 through the fins 140, the purlin 100 is structurally reinforced in areas of concentrated stress. By strengthening the structural strength of critical stress points, bending and twisting damage to the purlin 100 are prevented, effectively improving the wind load resistance of the photovoltaic equipment.

[0056] Among them, the first direction X, the second direction Y, and the third direction Z intersect each other pairwise and are not coplanar. Specifically, Figure 2 In the embodiment, the first direction X is the left-right direction, the second direction Y is the direction perpendicular to the paper, and the third direction Z is the up-down direction.

[0057] In some embodiments of this application, on the side away from the side plate portion 120 in the second direction Y, a portion of the edge of the flange portion 130 is folded towards the direction away from the bottom plate portion 110 to form an auxiliary wing portion 140. In this way, not only is the integral molding of the flange portion 130 and the side plate portion 120 increased, but the auxiliary wing portion 140 is also formed by directly using part of the material of the flange portion 130, thereby improving the overall stiffness and tensile, bending, and torsional bearing capacity of the purlin 100 without adding extra material.

[0058] Furthermore, the flange portion 130, on the side away from the side plate, is recessed in the direction toward the side plate portion 120, forming two intersecting flange surfaces 141. That is, the flange portion 130 as a whole presents a triangular shape, and the depth of the inward recess of the flange portion 130 is no greater than the width of the flange portion 130 in the second direction Y. Moreover, the flange portion 130 forms an angle with the surface of the base plate portion 110. The combined structure of the flange portion 130 and the triangular auxiliary flange portion 140 can form a reinforcing zone on the purlin 100, and through this reinforcing zone, structural reinforcement is provided for the stress-concentrated parts of the purlin 100.

[0059] In some embodiments of this application, the flange portion 130 has support surfaces 132 at both ends in the first direction X for abutting against the bottom of the photovoltaic module 600. The two support surfaces 132 are respectively connected to two mounting surfaces 131, and both support surfaces 132 at both ends are parallel to and coplanar with each other in the first direction X. Furthermore, the base plate portion 110 has two supporting end faces 112 at both ends in the first direction X. The supporting end faces 112 can be located between the two side plate portions 120, or on the side of the base plate portion 110 away from the side plate portions 120, as long as the two supporting end faces 112 are located below the two support surfaces 132 in the third direction Z, and the two supporting end faces 112 are parallel to each other. Thus, the purlin 100 has a uniform cross-section at both ends in the first direction X, that is, the cross-sections at the support surfaces 132 and the supporting end faces 112 maintain the same cross-sectional shape, thereby facilitating the connection between the purlin 100 and the photovoltaic module 600.

[0060] In some embodiments, a recessed space 101 is formed in the middle of the side of the bottom plate portion 110 away from the side plate portion 120 in the first direction X. The recessed space 101 is used to cooperate with the outer surface of the main beam 200 so as to cooperate with the main beam 200 of different shapes and to prevent the purlins 100 from rotating relative to each other.

[0061] Specifically, the base plate 110 has two protruding blocks 113 on the side away from the side plate 120. The two protruding blocks 113 are spaced apart along the first direction X, and a recessed space 101 is formed between the two protruding blocks 113. Each protruding block 113 has an inner arc surface 114 formed on its inner wall facing the other protruding block 113. In actual use, the main beam 200 has a square cross-section, and at the four corners of the direction, the main beam 200 is provided with chamfered surfaces 220. When the purlin 100 is installed on the main beam 200, the two chamfered surfaces 220 at the top of the main beam 200 fit together with the inner arc surfaces 114 of the two protruding blocks 113, so that the bottom of the purlin 100 can be adapted to the contact position shape of the main beam 200, thereby improving the installation strength of the purlin 100 on the main beam 200.

[0062] Furthermore, the two protruding blocks 113 protruding from the base plate 110 have a greater distance in the third direction (Z) from the end of the protruding block 113 to the flange 130 than the distance in the third direction (Z) from the support surface 132 to the supporting end face 112. This results in a gradual increase in the cross-sectional area of ​​the purlin 100 from the supporting end face 112 to the protruding block 113, meaning that the middle part of the purlin 100 exhibits a variable cross-section. As can be seen from the above, the pressure exerted on the purlin 100 by the photovoltaic module 600 is concentrated at the position where the purlin 100 is close to or connected to the main beam 200, i.e., between the two protruding blocks 113. By increasing the structural strength of the purlin 100 at the position of the protruding block 113 through the variable cross-section, the overall stiffness and tensile and torsional bearing capacity of the purlin 100 can be increased.

[0063] In some embodiments of this application, see [reference] Figure 5 , Figure 6 and Figure 7 To fix the purlin 100 to the main beam 200, the mounting bracket also includes a connector 300, which can be a screw, clamp, etc., to fix the purlin 100 to the main beam 200. Specifically, in some embodiments, the base plate 110 has two mounting holes 111 spaced apart along a first direction X. The connector 300 includes a connecting arm 310 and two fixing arms 320. The connecting arm 310 is located between the two side plates 120, and the two fixing arms 320 are respectively located at both ends of the connecting arm 310 in its longitudinal direction, so that the connector 300 has a U-shaped structure. The two fixing arms 320 pass through the two mounting holes 111, and each fixing arm 320 has a connecting end 311 at the end away from the connecting arm 310, with a fastening hole 312 provided on the connecting end 311.

[0064] The main beam 200 extends longitudinally along the second direction Y, and has positioning holes 210 on both sides in the first direction X. The positioning holes 210 are at the same height as the fastening holes 312 on the connector 300. The mounting bracket also includes a first fastener 400, which passes through the fastening hole 312 and is fixed in the positioning hole 210. The first fastener 400 can be a rivet or a long bolt, etc. The positioning hole 210 can be a threaded hole or a through hole. When the positioning hole 210 is a through hole, the first fastener 400 is a long bolt. The two fastening holes 312 on the long bolt connector 300 and the positioning holes 210 on both sides of the main beam 200, together with the nuts and long bolts, can then fix the connector 300 and the purlin 100 on the main beam 200.

[0065] In actual use, the positioning hole 210 not only serves to fix the purlin 100, but also to position the purlin 100. This eliminates the need for additional positioning brackets when installing the purlin 100 on the main beam 200, thereby increasing the on-site installation speed of the purlin 100 and solving the industry pain points of cumbersome alignment and low installation efficiency of the purlin 100.

[0066] In some specific embodiments, the two side edges of the connecting arm 310 and the fixed arm 320 in the second direction Y are turned outwards in a direction away from the main beam 200 to form a connecting sidewall 330, thereby improving the overall rigidity of the connector 300. It should be noted that, depending on the actual installation requirements, only one of the connecting arm 310 and the fixed arm 320 may be provided with a connecting sidewall 330, or only one side edge of the connecting arm 310 and the fixed arm 320 may be turned outwards to form the connecting arm 310.

[0067] The distance between the two connecting sidewalls 330 in the second direction Y does not exceed the distance between the two side plate portions 120 in the second direction Y, so that the two fixing arms 320 of the connector 300 can pass through each mounting hole 111 of the base plate portion 110 and the bottom surface of the connecting arm 310 is placed tightly against the surface of the base plate portion 110.

[0068] In some specific embodiments, both the connector 300 and the purlin 100 are formed by stamping to improve the production efficiency of the connector 300 and the purlin 100. Furthermore, stamping allows the base plate 110, side plate 120, flange 130, and auxiliary wing 140 to be integrally formed, which helps to improve the overall strength of the purlin 100. It is understood that in other embodiments, the base plate 110, side plate 120, flange 130, and auxiliary wing 140 may also be connected to each other by welding or other methods.

[0069] In actual use, the purlin 100 can be directly connected to the photovoltaic module 600. Specifically, this can be achieved by setting flange holes 133 at both ends of the flange portion 130 and connecting the purlin 100 to the photovoltaic module 600 through the flange holes 133 using a second fastener 410.

[0070] In some embodiments of this application, the purlin 100 can also be combined with other components to improve the installation effect; see details below. Figure 8 , Figure 9 and Figure 10The mounting bracket also includes a support member 500, which passes between the two side plate portions 120. The support member 500 has multiple support holes 510. Each flange portion 130 has flange holes 133 at both ends in the first direction X. Each flange hole 133 is aligned with one of the support holes 510.

[0071] When photovoltaic modules 600 need to be installed, the second fastener 410 for installing photovoltaic modules 600 passes through the flange hole 133 and the support hole 510 and is connected to the photovoltaic module 600, so that the photovoltaic module 600 can be fixed to the main beam 200 by the support member 500 and the purlin 100. The second fastener 410 can be a screw or rivet, etc. In actual use, the support member 500 can be an existing long purlin, and the existing long purlin can cooperate with the purlin 100 of this application. The product iteration cost is controllable, the long purlin does not need to be re-invested in a new production line, and at the same time, it allows the photovoltaic equipment to use a mixture of long purlins and the purlin 100 of this application when upgrading and retrofitting, avoiding material waste caused by technological iteration, which is especially suitable for the retrofitting of existing power plants.

[0072] In some specific embodiments, the support member 500 includes a first support portion 520, two second support portions 530, and two third support portions 540. The first support portion 520 extends longitudinally along the first direction X. The two second support portions 530 are respectively disposed on both sides of the first support portion 520 in the second direction Y. The two third support portions 540 are respectively disposed at the ends of the two support portions in the second direction Y away from the bottom plate portion 110, and extend away from each other. Support holes 510 are provided on the third support portions 540. In this way, the support member 500 as a whole is also Z-shaped, thereby improving the overall rigidity of the support member 500.

[0073] Furthermore, the length of the support member 500 in the first direction X is greater than that of the purlin 100, and the distance between the two side plate portions 120 is less than the distance between the two second support portions 530, so that the support member 500 can extend through the openings at both ends of the purlin 100 and bear the higher load of the photovoltaic module 600 through the longer support member 500. In addition, the upper surface of the flange portion 130 supports the lower surface of the support member 500 and is fixedly connected to the photovoltaic module 600 by bolts; through this combined design, a spatial triangular structure can be formed between the purlin 100 and the support member 500 at the center position of the main beam 200, further improving the overall structural stability.

[0074] This application also provides a photovoltaic device, including a photovoltaic module 600 and a mounting bracket as described in any of the above embodiments. Since this photovoltaic device includes all the technical features of the aforementioned mounting bracket, it possesses all the technical effects of the mounting bracket, and will not be elaborated further here.

[0075] The above-mentioned mounting bracket has at least the following advantages:

[0076] 1) Addressing the structural strength deficiencies of traditional purlin 100: Under wind pressure, the load on purlin 100 varies at different locations, with greater stress in areas near and connecting to the main beam 200. Stronger structural elements are needed at the connection points with the main beam 200, while the ends of purlin 100 experience less stress, serving primarily as connecting and supporting components. To address the issue of concentrated stress in the area connecting purlin 100 to the main beam 200 under wind pressure, a non-uniform cross-section design and stamping process, combined with a V-shaped design, are used to strengthen the structural strength of key stress-bearing components, preventing bending and torsional damage and improving the wind load resistance of the photovoltaic support system.

[0077] 2) The connection structure and installation process are simplified. The traditional design of requiring additional connectors 300 for purlins 100 with equal cross-section is abandoned. The connection structure matching the main beam 200 is directly formed by stamping, which reduces the number of connecting components between purlins 100 and main beam 200. At the same time, holes are pre-drilled on the main beam 200, and the long bolt positioning holes 210 are used to achieve "no positioning bracket" installation. The stamped semi-U-shaped connectors 300 are fixedly connected to the short purlins 100 and the main beam 200, solving the industry pain point of cumbersome alignment of purlins 100 and low installation efficiency.

[0078] 3) Achieve compatibility between new and old processes and cost control. Retain the U-shaped port to accommodate the overlapping use of long purlins. While reducing the height of traditional purlins by 100, avoid waste of old products caused by the replacement of new processes, and balance technological innovation and production cost control.

[0079] Technical advantages:

[0080] 1. Non-uniform cross section optimization of stress distribution: Based on the load differences at different positions of purlin 100, that is, the purlin 100 is subjected to greater stress near the connection area of ​​the main beam 200 and less stress at both ends, the purlin 100 is reinforced at the connection part of the main beam 200 by stamping process. The stamped structure directly matches the cross section of the main beam 200, serving as both a support for purlin 100 and a connector 300, combining two functions into one.

[0081] 2. The flange 130 is set in a non-horizontal form and forms an obtuse V-shape. Then, a reinforced auxiliary flange 140 is set at the bottom of the V-shape. The entire purlin 100 is then connected to the main beam 200 through a U-shaped connector 300, realizing "repairing where it is weak and strengthening it as needed". This improves the reliability and installation efficiency compared to the traditional uniform cross-section structure and reduces the system cost.

[0082] 3. Replacing the traditional combination of "U-bolt + connector 300", the number of connecting components is reduced, and the locating holes 210 in the side wall of the main beam 200 are quickly fixed by rivets or long bolts. This not only prevents the purlin 100 from sliding and twisting, but also allows adjacent purlins 100 to be pre-positioned in the factory. On-site installation does not require additional positioning brackets, which improves the speed of on-site installation and enables quick installation without positioning brackets.

[0083] 4. Seamless integration of new and old processes and products: The purlin 100 retains a U-shaped port at both ends, and the traditional long purlin can be used as the support component 500. Through the combination of "short purlin 100 + support component 500", the purlin 100 can be directly connected to the traditional support component 500 for installation and use. The product iteration cost is controllable, and the support component 500 does not need to be reinvested in a new production line. At the same time, it allows the power station to use purlin 100 and support component 500 in combination during the upgrade and renovation, avoiding material waste caused by technology iteration. It is especially suitable for the renovation of existing photovoltaic equipment.

[0084] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0085] The above embodiments merely illustrate several implementation methods of this application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A purlin, characterized in that, The purlins include: The base plate (110) extends longitudinally along the first direction (X); Two side plate portions (120) are respectively provided on both sides of the bottom plate portion (110) in the second direction (Y); Two flange portions (130) are respectively provided at the ends of the two side plate portions (120) in the third direction (Z) away from the bottom plate portion (110), and the two flange portions (130) extend away from each other in the second direction (Y). The side of each flange portion (130) away from the bottom plate portion (110) is recessed toward the bottom plate portion (110) to form two intersecting mounting surfaces (131). An auxiliary wing (140) is provided on at least one of the flange portions (130) and is located at the intersection of the two mounting surfaces (131) of the flange portion (130), and the auxiliary wing (140) is connected to the two mounting surfaces (131) respectively; The first direction (X), the second direction (Y), and the third direction (Z) intersect each other but are not coplanar.

2. The purlin according to claim 1, characterized in that, On the side away from the side plate portion (120) in the second direction (Y), a portion of the edge of the flange portion (130) is folded in a direction away from the bottom plate portion (110) to form the attached wing portion (140).

3. The purlin according to claim 2, characterized in that, The flange portion (130) is recessed on the side away from the side plate in the direction toward the side plate portion (120) and forms two intersecting flange surfaces (141).

4. The purlin according to claim 1, characterized in that, The bottom plate portion (110) has a recessed space (101) formed in the middle of the side away from the side plate portion (120) in the first direction (X), and the recessed space (101) is used to cooperate with the outer surface of the main beam (200).

5. A mounting bracket, characterized in that, It includes a connector (300), a main beam (200), and a purlin (100) as described in any one of claims 1-4, wherein the connector (300) is used for mounting the purlin (100) to the main beam (200).

6. The mounting bracket according to claim 5, characterized in that, The base plate (110) has two mounting holes (111) spaced apart along a first direction (X). The connector (300) includes a connecting arm (310) and two fixing arms (320). The connecting arm (310) is located between the two side plates (120). The two fixing arms (320) are respectively located at both ends of the connecting arm (310) in its longitudinal direction and pass through the two mounting holes (111). Each fixing arm (320) has a fastening hole (312) at the end away from the connecting arm (310). The main beam (200) extends longitudinally along the second direction (Y) and has positioning holes (210) on both sides in the first direction (X). The mounting bracket also includes a first fastener (400), which passes through the fastening hole (312) and is fixed in the positioning hole (210).

7. The mounting bracket according to claim 6, characterized in that, The connecting arm (310) and / or the fixed arm (320) have at least one side edge turned outward in the second direction (Y) toward a direction away from the main beam (200) to form a connecting sidewall (330).

8. The mounting bracket according to claim 6, characterized in that, The mounting bracket also includes a support member (500), which passes between the two side plate portions (120) and has a plurality of support holes (510). Each flange portion (130) has flange holes (133) at both ends in the first direction (X), and each flange hole (133) is aligned with one of the support holes (510).

9. The mounting bracket according to claim 8, characterized in that, The support member (500) includes a first support portion (520), two second support portions (530) and two third support portions (540). The first support portion (520) extends longitudinally along the first direction (X). The two second support portions (530) are respectively disposed on both sides of the first support portion (520) in the second direction (Y). The two third support portions (540) are respectively disposed at the ends of the two support portions in the second direction (Y) away from the bottom plate portion (110) and extend away from each other. The third support portion (540) is provided with the support hole (510).

10. A photovoltaic device, characterized in that, Including the mounting bracket as described in any one of claims 5-9.

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