Connecting structure for photovoltaic support

Abstract

The utility model discloses a connecting structure for a photovoltaic support, which comprises a first connecting piece and a second connecting piece which have the same structure and are arranged in a buckling manner to form a K-shaped connecting body with four end parts and a cavity structure, a first connecting column of the photovoltaic bracket is arranged in a penetrating manner from the first end part to the second end part; a first connecting column is inserted into the first end part in a clamping manner, a second connecting column is inserted into the third end part in a clamping manner, a third connecting column is inserted into the fourth end part in a clamping manner, the first connecting piece and the second connecting piece are locked through a fastener, and the first connecting column, the second connecting column and the third connecting column of the photovoltaic support are clamped at the same time; by the adoption of the structure, screw holes do not need to be machined in the connecting position, so that possible damage to the basalt fiber composite material base body in the punching process is avoided, overall stress is more uniform through the K-shaped connecting body, the strength and rigidity of the connecting position of the photovoltaic support stand column and the cross beam or the inclined strut are guaranteed, and meanwhile installation is convenient.

Description

Technical Field

[0001] The utility model belongs to the field of photovoltaics, and in particular relates to a connection structure for a photovoltaic bracket. Background Art

[0002] Photovoltaic brackets are the basic structure of photovoltaic arrays. Their main task is to safely, stably and efficiently support photovoltaic modules so that they can face the sun at the designed angle and absorb solar energy to the maximum extent, thereby improving the power generation efficiency of photovoltaic systems. At present, in order to resist the influence of severe weather and environmental conditions and ensure the long-term stable operation of photovoltaic systems, more and more photovoltaic brackets are using basalt fiber composite materials. Due to the characteristics of basalt fiber composite materials, not only the strength and rigidity of photovoltaic brackets are improved, but also the corrosion resistance, high temperature resistance and environmental protection are improved.

[0003] Basalt fiber composite materials are generally used in the center column, cross beam or diagonal brace of photovoltaic brackets; the connection between the center column and the cross beam or diagonal brace is the key link in the entire bracket system, ensuring the stability and load-bearing capacity of the bracket structure. The common connection methods between the center column and the cross beam or diagonal brace are mainly the following: First, the use of adhesive bonding. As one of the connection methods, adhesive bonding is mainly limited to general composite parts that have relatively low requirements for connection strength or have certain requirements for sealing and vibration reduction. However, since the mechanical properties of the bonding itself are subject to the nature of the adhesive and the sophistication of the bonding process, its load-bearing capacity and anti-peeling ability are slightly inferior to other connection methods. Therefore, when dealing with high-strength loads or situations that require complex stress states, the applicability of the bonding method is limited; second, riveting and bolting, these two mechanical connection methods can greatly improve the strength and stiffness of the composite material connection; however, the complexity of the riveting process cannot be ignored: on the one hand, the installation of the support plate nut usually requires additional tooling equipment and precise operation, which increases the complexity of the manufacturing process; on the other hand, the local stress concentration generated during the riveting process may cause microcracks inside the composite material, posing a potential threat to the long-term stability of the photovoltaic bracket; at the same time, the use of bolts also puts forward higher process requirements for composite materials: first, the preset hole position needs to be accurately positioned and processed, which undoubtedly increases the technical difficulty and cost investment of the manufacturing process. Secondly, the punching operation may destroy the original interlayer structure of the composite material, resulting in a decrease in the local strength of the photovoltaic bracket connection part, affecting the uniformity of the overall performance of the photovoltaic bracket. What's worse, stress concentration at the hole edge and the generation of cracks at the hole mouth may become the source of failure of the connection between the photovoltaic support column and the beam or diagonal brace during service.

[0004] It can be seen that the conventional connection method between the column and the beam or diagonal brace in the basalt fiber composite photovoltaic support cannot meet the requirements of structural strength and stiffness of the connection and ease of installation. Utility Model Content

[0005] In order to overcome the above-mentioned technical defects, the utility model provides a connection structure for a photovoltaic bracket, which can solve the technical problems of the existing connection method, that is, the connection between the column and the beam or diagonal brace in the basalt fiber composite photovoltaic bracket cannot guarantee the strength and rigidity of the connection and is difficult to install.

[0006] In order to achieve the above purpose, the utility model adopts the following technical contents:

[0007] A connection structure for a photovoltaic support, comprising a first connection member and a second connection member having the same structure;

[0008] The first connecting member is buckled and connected with the second connecting member and locked by a fastener to form a K-shaped connecting body with four ends, and the interior of the K-shaped connecting body is a cavity structure;

[0009] The first end and the second end of the K-shaped connector are arranged in parallel, and the first connecting column of the photovoltaic bracket is arranged to pass through from the first end to the second end;

[0010] The second connecting column of the photovoltaic bracket is inserted into the third end of the K-shaped connector in a snap-fit ​​manner;

[0011] The third connecting column of the photovoltaic support is inserted into the fourth end of the K-shaped connector in a snap-fit ​​manner.

[0012] Furthermore, grooves are provided at the ends of the first connecting member and the second connecting member; protrusions are provided on the end surfaces of the first connecting column, the second connecting column and the third connecting column; the protrusions cooperate with the grooves to achieve the interlocking locking between the photovoltaic bracket and the connecting structure.

[0013] Furthermore, the fastener includes a bolt and a nut; the first connecting member and the second connecting member are provided with mounting holes, the bolt is inserted into the mounting hole and cooperates with the nut to achieve connection between the first connecting member and the second connecting member.

[0014] Furthermore, the fastener also includes a top screw; the first connecting member and the second connecting member are provided with threaded holes, and the top screw cooperates with the threaded holes to fasten the first connecting column and the K-shaped connecting body.

[0015] Furthermore, an S-shaped structure is arranged on the top of the first connecting member and the second connecting member, and the two S-shaped structures are arranged to be inserted into each other.

[0016] Furthermore, ribs are provided on the surfaces of the first connecting member and the second connecting member, and the ribs are arranged in a vertical direction.

[0017] Furthermore, epoxy glue is applied respectively at the connection points between the K-shaped connector and the first connection column, the second connection column and the third connection column.

[0018] Furthermore, the first end and the third end are arranged obliquely or vertically.

[0019] Furthermore, the second end and the fourth end are arranged obliquely or vertically.

[0020] Furthermore, the first connecting member and the second connecting member are both made of aluminum alloy.

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] The utility model provides a connection structure for a photovoltaic bracket, which includes a first connection member and a second connection member with the same structure, and the two are arranged in a snap-fit ​​manner to form a K-shaped connector with four ends and a cavity structure; the first connection column of the photovoltaic bracket is arranged in a direction from the first end to the second end; the second connection column is inserted in a snap-fit ​​manner in the third end, and the third connection column is inserted in a snap-fit ​​manner in the fourth end, and the first connection member and the second connection member are locked by fasteners, and the first connection column, the second connection column and the third connection column of the photovoltaic bracket are clamped at the same time; the first connection column, the second connection column and the third connection column are all basalt fiber composite materials. Compared with the traditional connection method, the above connection method does not require processing screw holes at the connection, thereby avoiding possible damage to the basalt fiber composite material matrix during the drilling process, and the K-shaped connector makes the overall force more uniform, ensuring the strength and rigidity of the connection between the photovoltaic bracket column and the beam or the diagonal brace, and is easy to install; the connection structure is simple in principle, easy to implement, and has good promotion and application value.

[0023] Preferably, in the utility model, grooves are provided at the ends of the first connecting member and the second connecting member, and protrusions are provided at the ends of the first connecting column, the second connecting column and the third connecting column. The protrusions are embedded in the grooves, thereby realizing the embedded locking between the connecting column and the connecting member and improving the fastening effect.

[0024] Preferably, in the utility model, the fasteners include bolts and nuts as well as jackscrews and threaded holes that cooperate with each other, so as to facilitate fastening of the first connecting member and the second connecting member, thereby achieving fastening between the connecting column and the connecting member.

[0025] Preferably, in the utility model, an S-shaped structure is arranged at the top of the first connecting member and the second connecting member, and the two S-shaped structures are inserted into each other, which can not only effectively limit the slight deformation that may occur during the tightening process of the top screw 6, but also can be connected with the corresponding groove structure of the connecting column, thereby improving the rigidity and stability of the overall structure.

[0026] Preferably, in the utility model, ribs are provided on the first connecting member and the second connecting member, and the provision of the ribs can enhance the overall shear strength of the connecting structure.

[0027] Preferably, in the utility model, the connection points between the K-shaped connector and the connecting column are respectively coated with epoxy glue, which effectively reduces the occurrence of stress concentration and enhances the mechanical properties of the overall structure. At the same time, it can also play a pre-positioning role before bolting, ensuring that the connector and the connecting column (composite material) can be accurately aligned, thereby improving assembly accuracy and work efficiency.

[0028] Preferably, in the present invention, the first connecting member and the second connecting member are both made of aluminum alloy, which ensures the overall strength and rigidity of the connection structure and can also reduce the overall weight. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic diagram of a connection structure for a photovoltaic support provided by an embodiment of the utility model;

[0030] Figure 2 A schematic diagram of the three-dimensional structure of a first connecting member of a connecting structure for a photovoltaic support provided by an embodiment of the utility model;

[0031] Figure 3 A schematic structural diagram of a second connecting column of a photovoltaic support connection structure provided by an embodiment of the utility model;

[0032] Figure 4 A schematic diagram of an application scenario of a connection structure for a photovoltaic support provided by an embodiment of the utility model;

[0033] Figure 5 for Figure 4 A partial enlarged view of the connection between the middle connecting structure and the photovoltaic bracket.

[0034] Reference numerals:

[0035] 1. First connecting column; 2. Second connecting column; 3. Third connecting column; 4. First connecting piece; 5. Second connecting piece; 6. Top screw; 7. Bolt; 8. Nut; 9. Threaded hole; 10. Mounting hole; 11. Protrusion; 12. Rib; 13. Groove; 14. Photovoltaic bracket; 14-1. Crossbeam; 14-2. Diagonal brace; 14-3. Column; 15. Connection structure. DETAILED DESCRIPTION

[0036] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the following specific embodiments further describe the utility model in detail. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0037] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0040] In the description of the embodiments of the present utility model, it should be noted that if the terms "upper", "lower", "horizontal", "inner", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use, it is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0041] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", which does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0042] In the description of the embodiments of the present utility model, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0043] The utility model is further described in detail below with reference to the accompanying drawings:

[0044] Example

[0045] As mentioned in the background technology, for basalt fiber composite photovoltaic brackets, the conventional gluing, riveting or welding methods used at the connection between the center column and the beam or diagonal brace have certain limitations. Not only can the strength and rigidity of the structure not be met, but the installation process is also relatively complicated and cumbersome.

[0046] In order to solve the above problems, this embodiment provides a connection structure for a photovoltaic bracket. By adopting this connection structure, the connection process is optimized, the ever-increasing structural performance requirements are met, and the sustainable development goals of the green energy industry are complied with; the efficiency and reliability of the photovoltaic bracket during the connection process are achieved.

[0047] like Figure 1 and Figure 2 As shown, this embodiment provides a connection structure for a photovoltaic bracket, including a first connection member 4, a second connection member 5, a top screw 6, a bolt 7, a nut 8, a threaded hole 9, a mounting hole 10 and a rib 12.

[0048] In this embodiment, the first connecting column 1 , the second connecting column 2 and the third connecting column 3 are all made of basalt fiber composite materials.

[0049] In this embodiment, the first connecting member 4 and the second connecting member 5 have the same structure and are preferably made of aluminum alloy, which not only meets the requirements of structural strength and rigidity but also can reduce weight.

[0050] The first connecting member 4 and the second connecting member 5 are assembled by bolt fastening. The connection area between the two is carefully designed and pre-coated with a layer of epoxy glue, which is a high-strength, high-toughness adhesive with good adhesion. The role of the epoxy glue is to further consolidate the connection stability between the first connecting column 1, the second connecting column 2 and the third connecting column 3 and the first connecting member 4 and the second connecting member 5, effectively reduce the occurrence of stress concentration, and enhance the mechanical properties of the overall structure. At the same time, it can also play a pre-positioning role before connecting with bolts 7, ensuring that the connecting parts and the composite material can be accurately aligned, thereby improving assembly accuracy and work efficiency.

[0051] like Figure 2 and Figure 3 As shown, inside the first connecting member 4 and the second connecting member 5, unique protrusions 11 are provided, and these protrusions 11 precisely match the grooves 13 on the surfaces of the first connecting column 1, the second connecting column 2, and the third connecting column 3, so as to achieve the interlocking locking between the connecting column and the connecting member. The first connecting member 4 and the second connecting member 5 are each provided with two identical mounting holes 10 and threaded holes 9, which have the same hole diameters and are arranged coaxially, so that the bolt 7 can smoothly pass through the mounting hole and cooperate with the nut 8, so as to quickly and firmly connect the first connecting member 4 and the second connecting member 5 together; the top screw 6 cooperates with the threaded hole 9, and the first connecting column 1 is fastened in the K-shaped connecting body composed of the first connecting member 4 and the second connecting member 5 by screwing the top screw 6.

[0052] In this embodiment, in order to improve the overall shear strength of the connection structure, a plurality of ribs 12 arranged in a vertical direction are provided on the surfaces of the first connection member 4 and the second connection member 5 .

[0053] In this embodiment, the specific installation process is as follows: first, epoxy glue is evenly applied on the contact surfaces of the first connecting column 1, the second connecting column 2 and the third connecting column 3 to be connected and the first connecting member 4 and the second connecting member 5, and then the composite material is placed on the first connecting member 4 to ensure that the groove 13 of the material is completely fitted with the protrusion 11 inside the connecting member to achieve mechanical interlocking. Then the second connecting member 5 is connected to the specific S-shaped structure at the top of the first connecting member 4. The design of the S-shaped structure can not only effectively limit the slight deformation that may occur during the tightening process of the top screw 6, but also can be connected with the groove structure of the connecting material to improve the rigidity and stability of the overall structure.

[0054] The bolt 7 is passed through the pre-designed mounting hole 10 and matched with the nut 8, thereby tightly connecting the first connecting member 4 and the second connecting member 5 into a whole (i.e., a K-shaped connecting body). Finally, the top screw 6 is tightened through the preset threaded holes 9 on the first connecting member 4 and the second connecting member 5 to further enhance the connection strength between the basalt fiber composite material and the connecting member, ensuring that the entire structure still maintains a high degree of stability and reliability under stress.

[0055] The utility model provides a connection structure for a photovoltaic bracket with extremely high flexibility and adaptability. The size and shape of the first connector 4 and the second connector 5, as well as the number of mounting holes 10 and threaded holes 9 on the connectors, and even the specific K-shaped angles on the connectors and other detailed designs can be customized according to the connection requirements of the actual project. Such design features enable the utility model to accurately meet the specific connection strength, stability and adaptability requirements in various complex application scenarios, demonstrating its broad application prospects and excellent technical value.

[0056] Specific as Figure 4 and Figure 5 As shown, the connection structure 15 is connected to the photovoltaic bracket 14. As can be seen in the figure, the first end and the third end of the K-shaped connector are vertically arranged, the crossbeam 14-1 runs through the K-shaped connector, the diagonal brace 14-2 is inserted in the third end of the K-shaped connector, and the column 14-3 is inserted in the fourth end. Due to the setting of the connection structure 15, the strength and rigidity of the entire photovoltaic bracket 14 structure are guaranteed, and the difficulty of installation is reduced. Compared with similar technologies currently on the market, the application of basalt fiber composite materials in photovoltaic brackets can not only improve the performance and reliability of the bracket, but also help reduce the overall construction cost of photovoltaic power stations and the operating costs during the life cycle, which has positive significance for promoting the green development of the solar photovoltaic industry.

[0057] The utility model provides a connection structure for a photovoltaic bracket, which has the following advantages compared with the existing connection methods:

[0058] First, unlike the traditional bolt connection method, the utility model chooses another more superior connection strategy when connecting basalt fiber composite materials, abandoning the practice of opening bolt holes on the main body of the basalt fiber composite material, thereby avoiding possible damage to the basalt fiber composite material matrix during the drilling process, such as common fiber breakage, matrix material damage and other damage modes, which often lead to the local strength weakening of the connection between the photovoltaic support column and the beam or diagonal brace, affecting the safety and durability of the entire photovoltaic support structure. The utility model successfully improves the overall strength of the photovoltaic support connection part through innovative non-destructive connection technology, so that it can better exert the mechanical properties of the basalt fiber composite material itself.

[0059] Second, the connection structure provided by the utility model is simple, so it has significant advantages in terms of ease of operation. Without complicated installation procedures or professional equipment, users can easily achieve high-quality connection operations. In addition, the connection method between the two connectors is simple and the exterior of the connector is beautiful and smooth, so after assembly, the structure has a smooth and beautiful appearance, which meets the aesthetic requirements of various application environments. More importantly, while simplifying the connection process and improving the connection efficiency, the utility model effectively controls the cost, making it have a high cost-effectiveness, allowing basalt fiber composite materials to be widely used in the field of photovoltaic bracket connections, greatly broadening the market prospects.

[0060] The above embodiment is only one of the implementation methods that can realize the technical solution of the utility model. The scope of protection required by the utility model is not limited only to this embodiment, but also includes within the technical scope disclosed by the utility model, any changes, replacements and other implementation methods that can be easily thought of by any technician familiar with the technical field.

Claims

1. A connection structure for a photovoltaic support, characterized in that: It comprises a first connecting member (4) and a second connecting member (5) having the same structure; The first connecting member (4) and the second connecting member (5) are connected by buckling and locked by a fastener to form a K-shaped connecting body with four ends, and the interior of the K-shaped connecting body is a cavity structure; The first end and the second end of the K-shaped connector are arranged in parallel, and the first connecting column (1) of the photovoltaic bracket is arranged to pass through from the first end to the second end; The second connecting column (2) of the photovoltaic bracket is inserted into the third end of the K-shaped connector in a snap-fit ​​manner; The third connecting column (3) of the photovoltaic support is inserted into the fourth end of the K-shaped connector in a snap-fit ​​manner.

2. A connection structure for a photovoltaic support according to claim 1, characterized in that: The ends of the first connecting member (4) and the second connecting member (5) are both provided with grooves (13); the end surfaces of the first connecting column (1), the second connecting column (2) and the third connecting column (3) are all provided with protrusions (11); the protrusions (11) cooperate with the grooves (13) to achieve interlocking between the photovoltaic bracket and the connecting structure.

3. A photovoltaic support connection structure according to claim 1, characterized in that: The fastener comprises a bolt (7) and a nut (8); the first connecting member (4) and the second connecting member (5) are provided with a mounting hole (10); the bolt (7) is inserted into the mounting hole (10) and cooperates with the nut (8) to achieve connection between the first connecting member (4) and the second connecting member (5).

4. A connection structure for a photovoltaic support according to claim 3, characterized in that: The fastener also includes a top screw (6); the first connecting member (4) and the second connecting member (5) are provided with a threaded hole (9), and the top screw (6) cooperates with the threaded hole (9) to form a fastening between the first connecting column (1) and the K-shaped connecting body.

5. A photovoltaic support connection structure according to claim 1 or 4, characterized in that: The tops of the first connecting member (4) and the second connecting member (5) are provided with S-shaped structures, and the two S-shaped structures are arranged to be inserted into each other.

6. A photovoltaic support connection structure according to claim 1, characterized in that: The surfaces of the first connecting member (4) and the second connecting member (5) are provided with ribs (12), and the ribs (12) are arranged in a vertical direction.

7. A photovoltaic support connection structure according to claim 1, characterized in that: The connection points between the K-shaped connector and the first connection column (1), the second connection column (2) and the third connection column (3) are respectively coated with epoxy glue.

8. A photovoltaic support connection structure according to claim 1, characterized in that: The first end and the third end are arranged obliquely or vertically.

9. A photovoltaic support connection structure according to claim 1, characterized in that: The second end and the fourth end are arranged obliquely or vertically.

10. A photovoltaic support connection structure according to claim 1, characterized in that: The first connecting member (4) and the second connecting member (5) are both made of aluminum alloy.

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