Photovoltaic tracking support and supporting system

Abstract

The utility model relates to a photovoltaic tracking support and a supporting system, a photovoltaic assembly comprises a laminated piece and a photovoltaic frame, the tracking support comprises the photovoltaic frame, a wingceltis bar and at least one inhaul cable, and the photovoltaic frame is used for fixing the photovoltaic assembly; the wingceltis strips are fixed on the bottom surface of the photovoltaic frame; two ends of the inhaul cable are respectively connected with different positions of the photovoltaic frame; in the thickness direction of the photovoltaic frame, the middle of the inhaul cable is higher than or lower than the first end and the second end, and the inhaul cable is in a tensioned state; the extending size of the inhaul cable in the length direction of the wingceltis strips is larger than the length of the wingceltis strips. According to the scheme, the inhaul cables extending in the length direction of the wingceltis strips are arranged, the length of each inhaul cable is larger than that of each wingceltis strip, the restraining force on the cantilever end of the photovoltaic frame is effectively improved, the problem that a traditional tracking support only depends on purlines for supporting, and consequently the supporting strength is insufficient is solved, and the overall load resistance of the support is improved; and more stable support is provided under the extreme wind power condition, and the operation reliability and safety of the whole photovoltaic power generation system are improved.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic technology, and in particular to a photovoltaic tracking bracket and support system. Background Technology

[0002] Currently, tracking brackets used in photovoltaic (PV) power generation systems typically employ purlins to support the PV modules. Common purlin shapes are either Z-shaped or C-shaped. Existing purlin designs generally have short lengths, much shorter than the overall length of the PV module, resulting in a significant portion of the module being cantilevered. This cantilevered portion experiences substantial bending moments and stress concentrations under wind loads, especially during strong winds. Since the tracking bracket is a movable support, the mechanical properties of the module are severely challenged, making it highly susceptible to material fatigue and fracture, ultimately affecting the power generation efficiency and safety of the entire PV system.

[0003] Therefore, existing photovoltaic tracking brackets urgently need improvement in the face of severe weather conditions to enhance their wind resistance and stability. Utility Model Content

[0004] Based on this, a photovoltaic tracking bracket and support system are provided to improve the problem that the existing photovoltaic brackets have insufficient structural strength, making it difficult for the photovoltaic brackets to withstand harsh conditions.

[0005] On one hand, this utility model provides a photovoltaic tracking bracket, wherein the photovoltaic module includes a laminate and a photovoltaic frame disposed on the long side of the laminate, and the tracking bracket includes:

[0006] Photovoltaic frame, used to fix photovoltaic modules;

[0007] The purlin is fixed to the bottom surface of the photovoltaic frame;

[0008] There is at least one cable, with its two ends connected to different positions on the photovoltaic frame; along the thickness direction of the photovoltaic frame, the middle of the cable is higher or lower than the first and second ends, and the cable is in a taut state.

[0009] The extension dimension of the cable along the length of the purlin is greater than the length of the purlin.

[0010] Based on the above technical solution, the present invention can be further improved as follows.

[0011] In one implementation, the extension plane of the cable is parallel to the length direction of the purlin, and the extension plane of the cable is located outside the side of the photovoltaic frame.

[0012] In one implementation, along the thickness direction of the photovoltaic frame, the first and second ends of the same cable are set at the same height, and the cable is divided into:

[0013] The upper cable has its middle section higher than the first mounting section;

[0014] The lower cable has its middle section lower than the first mounting section;

[0015] The photovoltaic frame has at least one upper cable and at least one lower cable on the side where the purlin is installed.

[0016] In one implementation, the tracking bracket includes:

[0017] The main support beam is connected to the bottom of the purlin and is perpendicular to each other; the main support beam extends along the transverse and / or longitudinal middle of the laminate.

[0018] The first connector is fixed to the bottom surface of the photovoltaic frame, and the end of the cable is connected to the photovoltaic frame through the first connector.

[0019] The second connector is fixed to the purlin or the main beam of the bracket. The top of the second connector is used to connect the upper cable and is higher than the first connector.

[0020] The third connector is fixed to the main beam of the support frame. The lower end of the third connector is used to connect the pull cable and is lower than the first connector.

[0021] In one implementation, the first connector is a rectangular block structure, a part of the first connector is fixed to the bottom surface of the photovoltaic frame, and the other part of the first connector extends out of the side edge of the photovoltaic frame and is used to fix the cable.

[0022] In one implementation, the second connector is fixed to the purlin, and the top of the second connector has a connection hole and is higher than the bottom surface of the photovoltaic frame;

[0023] The third connector is L-shaped and at least one is provided; the third connector is fixed to the main beam of the support.

[0024] In one implementation, the cross-section of the purlin is U-shaped, with one side of the top surface of the U-shape connected to the photovoltaic frame and the bottom surface of the U-shape connected to the main beam of the support.

[0025] The main beam of the support is set perpendicular to the length of the photovoltaic frame and extends beyond the edges of the photovoltaic frame at both ends.

[0026] In one implementation, a purlin is fixed to each of the two long sides of the photovoltaic frame, and the two purlins are symmetrically arranged along the center line of the photovoltaic frame.

[0027] Each photovoltaic frame containing a purlin is equipped with two cables on its side, namely an upper cable and a lower cable; each cable is symmetrically arranged along the center line of the photovoltaic frame.

[0028] On the other hand, this utility model also provides a support system for driving the photovoltaic module to rotate, and the support system further includes:

[0029] A rotating device is used to drive the tracking bracket to rotate.

[0030] Steering mechanism, used to steer the tracking bracket;

[0031] The connecting device connects the tracking bracket, the rotating device, and the steering device together.

[0032] The beneficial effects of this utility model are as follows: This solution effectively improves the constraint force on the cantilever end of the photovoltaic frame by setting a cable connected to the photovoltaic frame and extending in the purlin length direction longer than the purlin length. This solves the problem that the support strength of traditional tracking brackets is insufficient due to the purlins alone. It improves the overall load resistance of the bracket, provides more stable support under extreme wind conditions, reduces the risk of photovoltaic module breakage, avoids the photovoltaic modules from twisting or shaking due to external forces, and improves the operational reliability and safety of the entire photovoltaic power generation system. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure of the photovoltaic tracking bracket in one embodiment;

[0034] Figure 2 This is a partial structural diagram of the photovoltaic tracking bracket in another embodiment;

[0035] Figure 3 This is a partial structural schematic diagram of the photovoltaic tracking bracket in another embodiment;

[0036] Figure 4 for Figure 3 Enlarged view of the structure at point A in the middle.

[0037] In the attached diagram, the components represented by each number are as follows:

[0038] 1. Photovoltaic frame; 2. Pole; 3. Upper cable; 4. Lower cable; 5. Main beam of the support; 6. First connector; 7. Second connector; 8. Third connector. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit the scope of this application. It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of this utility model. Therefore, the drawings only show components related to this utility model and are not drawn according to the actual number, shape, and size of the components. In actual implementation, the shape, quantity, and proportion of each component can be arbitrarily changed, and the component layout may also be more complex.

[0040] It should be noted that, Figure 2 , Figure 3 and Figure 4 In the diagram, all the purlin strips 2 shown are cut open, which can be understood as the purlin strips 2 being cut open to reveal their internal structure and the structure of the second connector 7. The purlin strips 2 are cut open along their length from the middle. Figure 1 In the schematic diagram, purlin 2 represents the complete structure.

[0041] A photovoltaic tracking bracket, see Figure 1 and Figure 4 The photovoltaic module includes a laminate and a photovoltaic frame disposed on the long side of the laminate. The tracking bracket includes a photovoltaic frame 1, a purlin 2, and at least one cable. The photovoltaic frame 1 is used to fix the photovoltaic module; the purlin 2 is fixed to the bottom surface of the photovoltaic frame 1. In this way, by placing the purlin 2 on the bottom surface of the photovoltaic frame 1 to support the photovoltaic frame 1, the force exerted on the photovoltaic frame 1 is easily distributed, resulting in better structural strength and stability.

[0042] The two ends of the cable are connected to different positions on the photovoltaic frame 1, namely the first end and the second end. Along the thickness direction of the photovoltaic frame 1, the middle of the cable is higher or lower than the first and second ends, and the cable is in a taut state. In this way, connecting the two ends of the cable to the bottom of the photovoltaic frame 1 strengthens the constraint force at the connection points between the photovoltaic frame 1 and the cable ends. When the tracking bracket is pushed up by a negative pressure load or pressed down by a positive pressure load in the middle, the presence of the cable makes the tracking bracket less prone to deformation or causes minimal deformation, thereby improving the stability of the entire photovoltaic system.

[0043] The extension dimension of the cable in the length direction of the purlin 2 is greater than the length of the purlin 2. This ensures that the cable, connected to the photovoltaic frame 1 and extending in the length direction relative to the purlin 2, is longer than the purlin 2, thus supporting the cantilever end that the purlin 2 cannot support, thereby improving the structural strength of the cantilever end. In addition, since the purlin 2 is usually shorter, the cantilever end of the photovoltaic frame 1 is longer. The longer cable length increases the constraint force on the cantilever end of the photovoltaic frame 1, thereby improving the wind resistance and stability of the entire photovoltaic module.

[0044] It should be noted that the height direction in this application is based on the thickness direction of the photovoltaic frame 1. Since the photovoltaic frame 1 is used to install photovoltaic modules, that is, the top surface of the photovoltaic frame 1 is the top surface of the photovoltaic modules, it can be concluded without dispute that the top surface of the photovoltaic frame 1 is higher than the bottom surface of the photovoltaic frame 1. In more specific terms, the height direction and the definition of height in this application are the direction perpendicular to the bottom surface of the photovoltaic frame 1. The height gradually increases from the bottom surface of the photovoltaic frame 1 to the top surface of the photovoltaic frame 1.

[0045] In some embodiments, see Figure 1 and Figure 2 The purlin 2 is located on the bottom surface of the photovoltaic frame 1 and serves the following functions: distributing weight and supporting the stable components; connecting the photovoltaic system and coordinating force distribution to enhance the overall structural integrity; resisting wind loads and bearing snow loads to adapt to environmental loads. In addition, the purlin 2 is also easy to install and maintain.

[0046] In photovoltaic modules, the length of the purlin 2 used is generally short, mainly because of cost control. Longer purlin 2 is too expensive, so shorter purlin 2 is often used. In addition, two purlin 2 can also be used.

[0047] In some embodiments, see Figure 1 and Figure 2 The first mounting part and the second mounting part are respectively connected to the two ends of the cable. The first mounting part and the second mounting part can be at the same height or at different heights. When the first mounting part and the second mounting part are at the same height and the overall distribution of the cable is symmetrically arranged along the center line of the photovoltaic module, it is beneficial to balance the force on the entire photovoltaic module. The overall distribution of the cable includes the fixed positions at both ends of the cable, the fixed height at both ends of the cable, and the protruding position in the middle of the cable.

[0048] In some embodiments of this application, see Figure 1 and Figure 4The extension plane of the cable is parallel to the length direction of the purlin 2. In this way, the connection between the purlin 2 and the photovoltaic frame 1 is a cantilever end, which is not constrained by the purlin 2 and is prone to deformation. By making the extension plane of the cable parallel to the length direction of the purlin 2, the cable can directly support the cantilever end in a direction parallel to the purlin 2, which helps to make the force on the photovoltaic module more balanced.

[0049] The extended plane of the cable can be understood as the plane formed by the cable itself after it is tensioned and fixed on the tracking bracket.

[0050] The extension plane of the cable is located outside the side of the photovoltaic frame 1. In this way, since the photovoltaic module is fixed to the upper part of the photovoltaic frame 1, the extension plane of the cable will not block the top surface of the photovoltaic module, so as to avoid affecting the light-receiving surface of the photovoltaic module and thus ensure the working efficiency of the photovoltaic module.

[0051] In some embodiments of this application, along the thickness direction of the photovoltaic frame 1, the first and second ends of the same cable are set at the same height. The cable is divided into an upper cable 3 and a lower cable 4. The middle part of the upper cable 3 is higher than the first mounting part, and the middle part of the lower cable 4 is lower than the first mounting part. In this way, setting the first and second mounting parts corresponding to the same cable at the same height facilitates the improvement of the stress balance of the photovoltaic frame 1.

[0052] In some embodiments, the direction of the positive pressure load is perpendicular to the top surface of the photovoltaic frame 1 and from top to bottom, while the direction of the negative pressure load is perpendicular to the bottom surface of the photovoltaic frame 1 and from bottom to top. As can be expected, the top and bottom surfaces of the photovoltaic frame 1 are parallel. Therefore, the upper cable 3 is used to improve the stability when bearing the positive pressure load and reduce the downward bulging deformation of the photovoltaic frame 1, and the lower cable 4 is used to improve the stability when bearing the negative pressure load and reduce the upward bulging deformation of the photovoltaic frame 1. That is, if it is desired to improve the overall resistance of the photovoltaic module to both positive and negative pressure loads, both the upper cable 3 and the lower cable 4 can be provided.

[0053] The photovoltaic frame 1 has at least one upper cable 3 and at least one lower cable 4 on the side where the purlin 2 is installed. In this way, each purlin 2 is provided with an upper cable 3 and a lower cable 4, which improves the constraint force of the photovoltaic module under both positive and negative pressure loads, effectively reduces the deformation of the photovoltaic module under positive and negative pressure, and thus improves the stability of the photovoltaic module.

[0054] In some embodiments of this application, see Figure 1 and Figure 4The tracking bracket includes a main beam 5, a first connector 6, a second connector 7, and a third connector 8. The main beam 5 is connected to the bottom of the purlin 2, and the main beam 5 and the purlin 2 are arranged perpendicular to each other. The main beam 5 extends along the middle of the transverse and / or longitudinal direction of the laminate. In this way, by setting the main beam 5, the distribution and connection of the purlin 2 and cables are facilitated. Extending the main beam 5 along the middle of the transverse and / or longitudinal direction of the photovoltaic frame 1, the main beam 5 supports the photovoltaic frame 1 in either the transverse or longitudinal direction.

[0055] The first connector 6 is fixed to the bottom surface of the photovoltaic frame 1, and the end of the cable is connected to the photovoltaic frame 1 through the first connector 6. The second connector 7 is fixed to the purlin 2 or the main beam 5 of the support frame, and the top of the second connector 7 is used to connect the upper cable 3 and is higher than the first connector 6. The third connector 8 is fixed to the main beam 5 of the support frame, and the lower end of the third connector 8 is used to connect the lower cable 4 and is lower than the first connector 6. In this way, the first connector 6 is set to connect the end of the cable to the photovoltaic frame 1, which improves the disassembly and adjustability of the cable; the second connector 7 is set to support the middle of the upper cable and make the middle of the cable higher than the first connector 6; the third connector 8 is set to support the middle of the lower cable and make the middle of the cable lower than the second connector 7, so that the cable has a stable support structure and achieves the constraint force on the cantilever end of the photovoltaic frame 1.

[0056] In some embodiments, the middle part of the cable is the connection point with the second connector 7 or the third connector 8. Through the support and connection of the second connector 7 and the third connector 8, the middle part of the cable is higher or lower than the first connector 6, thereby forming a constraint structure that resists deformation caused by load.

[0057] In some embodiments of this application, see Figure 1 and Figure 4 The first connector 6 is a rectangular block structure. A portion of the first connector 6 is fixed to the bottom surface of the photovoltaic frame 1, and the other portion of the first connector 6 extends out of the side edge of the photovoltaic frame 1 and is used to fix the cable. Thus, the part of the first connector 6 is fixed to the bottom surface of the photovoltaic frame 1 by means of bolting or welding; the other portion of the first connector 6 extends out of the side edge of the photovoltaic frame 1 and is connected to the cable, and the connection method can also be welding or snap-fit.

[0058] In some embodiments, a connection hole is provided on the first connector 6, and the end of the cable is set as a hook structure, so that the end of the cable and the first connector 6 form a detachable hook structure.

[0059] In some embodiments of this application, see Figure 1 and Figure 4The second connector 7 is fixed to the purlin 2, and the top of the second connector 7 has a connecting hole and is higher than the bottom surface of the photovoltaic frame 1; the third connector 8 is L-shaped and at least one is provided, and the third connector 8 is fixed to the main beam 5 of the support. In this way, the photovoltaic frame 1, purlin 2, and main beam 5 are arranged in sequence from top to bottom, so that the second connector 7 is connected to the purlin 2 so that the top of the second connector 7 protrudes from the bottom surface of the photovoltaic frame 1; the third connector 8 is fixed to the main beam 5 so that the third connector 8 can extend downward.

[0060] In some embodiments, the second connector 7 and the third connector 8 are each provided with a corresponding connecting hole, through which they are connected to the corresponding cable.

[0061] In some embodiments, see Figure 1 and Figure 4 The lower side of the second connector 7 is inserted into the U-shaped groove of the purlin 2 and is set along the width direction of the purlin 2. The middle part of the second connector 7 extends out of the U-shaped groove of the purlin 2 and has a connection hole. Since the main beam of the support is a hollow rectangular thin-walled structure, the cable crosses the width direction of the main beam of the support. In order to prevent the cable from contacting the main beam of the support and affecting the tension of the cable when under pressure or when the photovoltaic module deforms, two third connectors 8 can be set. The two third connectors 8 are located at both ends of the width direction of the support, thereby lifting the lower cable 4 and effectively preventing the cable from contacting the main beam of the support when the frame support deforms.

[0062] In some embodiments of this application, see Figure 1 and Figure 4 The cross-section of the purlin 2 is U-shaped. One side of the top surface of the U-shape of the purlin 2 is connected to the photovoltaic frame 1, and the bottom surface of the U-shape of the purlin 2 is connected to the main beam 5 of the support. In this way, the U-shaped purlin 2 has good bending and torsional resistance, is easy to install and fix, and can be flexibly connected with other components. In addition, the U-shaped structure can effectively save materials and reduce processing costs while ensuring strength and stability.

[0063] The main support beam 5 is positioned perpendicular to the length of the photovoltaic frame 1 and extends beyond the edges of the photovoltaic frame 1 at both ends. This extension of the main support beam 5 facilitates placing the extension plane of the cable outside the side of the photovoltaic frame 1, thus facilitating the installation of the purlin 2, the cable, and the third connector 8.

[0064] In some embodiments, the purlin 2 is symmetrically arranged along the length direction of the main beam 5 of the support, so that the purlin 2 can provide balanced support to the main beam 5 of the support.

[0065] In some embodiments of this application, see Figure 1 and Figure 4Each of the two long sides of the photovoltaic frame 1 is fixed with a purlin 2, and the two purlins 2 are symmetrically arranged along the center line of the photovoltaic frame 1. In this way, the purlins 2 are arranged along the edge of the photovoltaic frame 1 along its length direction, which facilitates balanced support for the photovoltaic frame 1 along its length direction.

[0066] Specifically, when the purlin 2 is set along the length direction of the photovoltaic frame 1, the extension plane of the cable is also set along the length direction of the photovoltaic frame 1, thereby effectively constraining the cantilever end of the photovoltaic frame 1 in the length direction, thereby improving the support effect of the cantilever end and reducing the deformation of the photovoltaic frame 1 in the length direction.

[0067] Each purlin 2 has two cables on its side of the photovoltaic frame 1, namely an upper cable 3 and a lower cable 4; each cable is symmetrically arranged along the centerline of the photovoltaic frame 1. In this way, each purlin 2 is designed to effectively generate tension on the cantilever end of the photovoltaic frame 1 extending from the purlin 2 in the length direction, so as to reduce the deformation of the photovoltaic frame 1 under stress; the cables symmetrically arranged along the centerline of the photovoltaic frame 1 effectively improve the uniform tension applied by the cables to the photovoltaic frame 1.

[0068] In some embodiments of this application, see Figure 1 and Figure 4 A rope tensioner is connected to the cable. By using the rope tensioner, the tension of the cable can be adjusted after installation to keep it taut and ensure its tensile strength.

[0069] Specifically, the rope tensioner is an existing structure, such as including rope fixing components, tensioning operation components, and adjustment and locking components;

[0070] Rope securing components are used to secure one or both ends of a rope to ensure that the rope does not slip during tensioning. Common forms include clamps, hooks, and rope buckles. For example, clamp-type securing components clamp the rope by tightening screws or other operations; hooks directly hook the rope; and rope buckles secure the rope by passing it through and fastening it.

[0071] Tensioning control components include: tensioners based on the principle of friction, which may include structures such as cams and ratchet wheels. The cam contacts the rope, and rotating the cam changes the contact pressure with the rope. The ratchet wheel works with a pawl to prevent the rope from slipping back after tensioning; tensioners based on the principle of leverage, whose main component is a lever wrench. The wrench usually has scales or grooves to indicate and control the tension. The operator moves the component connected to the rope by turning the lever to achieve tension; and tensioners based on the principle of gear transmission, which consists of a motor, gearbox, lead screw, etc. The motor provides power, which is reduced in speed by the gearbox and drives the lead screw to rotate. The nut on the lead screw is connected to the rope connection component. When the lead screw rotates, the nut moves along the lead screw, thereby tightening the rope.

[0072] Adjustment and locking components: These are used to adjust the tension and lock the tension. For example, some tensioners are equipped with adjustment knobs for fine adjustment of the tension. Locking devices prevent the rope from loosening after the required tension is reached. Common locking devices include buckles and bolts. Once the tension is appropriate, buckle the buckle or tighten the bolt to fix the tensioner in the current position.

[0073] A support system is provided for rotating photovoltaic modules. The support system further includes a rotating device, a steering device, and a connecting device. The rotating device rotates the tracking bracket; the steering device steers the tracking bracket; and the connecting device connects the tracking bracket, the rotating device, and the steering device together. This achieves the functions of supporting, rotating, and steering the photovoltaic modules.

[0074] In this embodiment, both the rotating device and the steering device are existing technologies. A rotating device refers to a mechanism or equipment that enables a photovoltaic support or photovoltaic module to rotate around a specific axis; a steering device is also typically used to change the orientation of a photovoltaic support or module, but it may differ from a rotating device in terms of function and application scenarios. A steering device can be a relatively simple manual adjustment mechanism or a complex automatic tracking system. In general, rotating devices emphasize rotational movement around an axis and are often closely related to the function of tracking the sun to achieve maximum power generation efficiency; steering devices focus more on changing direction, and their application scenarios and functions may be more diverse, covering a range from simple angle adjustments to orientation changes to adapt to complex environments.

[0075] The photovoltaic tracking bracket of this application features high wind resistance and stability, solving the problem of insufficient support strength caused by relying solely on purlins in traditional tracking bracket support schemes. By setting an upper cable 3 above the purlins of the photovoltaic module, the constraint force of the cantilever end of the photovoltaic module is increased when subjected to positive pressure load, thereby enhancing the stability of the entire bracket system. In addition, a lower cable 4 is set below the module frame to increase the constraint force of the cantilever end of the module when subjected to negative pressure load, thereby improving the overall ability of the bracket to resist negative pressure load.

[0076] In summary, this invention significantly enhances the stability of the photovoltaic module's cantilever end under both positive and negative pressure loads by connecting a purlin to each of the two long sides of the photovoltaic frame 1, and installing an upper cable 3 above each purlin and a lower cable 4 below the main beam 5 of the support. This effectively reduces stress concentration, enhances the overall balance of the module, and improves wind resistance. The improved tracking support provides more stable support under extreme wind conditions, reducing the risk of photovoltaic module breakage and preventing torsion and shaking caused by external forces, thus improving the operational reliability and safety of the entire photovoltaic power generation system. This solution is highly economical and can be customized with cables of different diameters and materials to suit different site requirements. Finally, it ensures high overall cost-effectiveness while increasing module stability, making it suitable for market applications.

[0077] This application fully considers the impact of wind loads in its structural design, optimizes the mechanical transfer path between purlins and components, reduces stress concentration at cantilever ends, and thus improves the wind resistance performance of the components. Cost control and feasibility were also considered during the design process, ensuring that while improving wind resistance stability, the length and number of purlins 2 were not increased, strictly controlling project costs and meeting the economic requirements for large-scale applications.

[0078] The installation method for the photovoltaic tracking bracket in this application includes the following process:

[0079] S1: Foundation preparation: Select a suitable location and carry out foundation construction to ensure that the foundation is firm and level; ensure that all installation tools and materials, including purlins, upper cable 3, lower cable 4, bolts, connectors, etc., are ready;

[0080] S2: Purlin Installation: Fix the purlins to the main beam 5 of the support, ensuring uniform spacing between the purlins, and reinforce them with bolts; verify the installation position of the purlins to ensure that the length and levelness meet the design requirements, and reduce subsequent installation errors.

[0081] S3: Install the photovoltaic frame 1 with the photovoltaic modules installed: Fix the photovoltaic frame 1 to the purlin, ensuring that the photovoltaic frame 1 is tightly and firmly installed; use anti-loosening nuts to reinforce each connection part to ensure that the photovoltaic frame 1 is not easy to loosen under long-term wind load conditions.

[0082] S4: Installation of upper cable 3: Install upper cable 3 below the frame of the photovoltaic module and connect both ends of the cable to the top structure of the main beam 5 of the support; adjust the tension of the cable to ensure that the cable generates appropriate tension on the cantilever end and increase the positive pressure constraint of the module.

[0083] S5: Installation of pull cable 4: Install pull cable 4 below the frame of the photovoltaic module, with both ends of the cable connected to the bottom of the main beam 5 of the support; adjust the tension of pull cable 4 to provide effective support for the cantilever end of the module under negative pressure load.

[0084] S6: Tension Adjustment and Fixing: Perform final tension adjustment on all upper cables 3 and lower cables 4 to ensure optimal support for the components after the cables are tightened; use fastening devices to reinforce the cables to prevent them from loosening during long-term use.

[0085] S7: Overall structural inspection: Conduct a comprehensive inspection of the entire tracking bracket, including the connection status of the photovoltaic frame 1, purlins, upper cable 3 and lower cable 4; after ensuring that all connectors are tight and installed in accordance with standards, conduct a wind load test to verify wind resistance stability.

[0086] S8: Final Adjustment and Maintenance: After completing the wind load test, fine-tune the cable tension and photovoltaic module position based on the actual test results; compile installation records and maintenance manuals to ensure that the system can be effectively maintained and inspected in the future.

[0087] The structures, proportions, sizes, etc., illustrated in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this utility model can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0088] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. In this utility model, unless otherwise explicitly stated and limited, "above" or "below" a second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, "above," "over," and "on top" of a second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" a second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0089] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

Claims

1. A photovoltaic tracking bracket for mounting photovoltaic modules, the photovoltaic modules comprising a laminate and a photovoltaic frame (1) disposed on the long side of the laminate, characterized in that, The tracking bracket includes: A purlin (2) is fixed to the bottom surface of the photovoltaic frame (1); At least one cable, the two ends of which are connected to different positions of the photovoltaic frame, the two ends of which are the first end and the second end; along the thickness direction of the photovoltaic frame (1), the middle part of the cable is higher or lower than the first end and the second end, and the cable is in a tensioned state; The extension dimension of the cable in the length direction of the purlin (2) is greater than the length of the purlin (2).

2. The photovoltaic tracking bracket according to claim 1, characterized in that, The extension plane of the cable is parallel to the length direction of the purlin (2), and the extension plane of the cable is located outside the side of the photovoltaic frame (1).

3. The photovoltaic tracking bracket according to claim 1, characterized in that, Along the thickness direction of the photovoltaic frame (1), the first end and the second end of the same cable are set at the same height, and the cable is divided into: Upper cable (3), the middle part of which is higher than the first end; A pull-down cable (4), the middle of which is lower than the first end; The photovoltaic frame (1) is provided with at least one upper cable (3) and at least one lower cable (4) on the side where the purlin (2) is installed.

4. The photovoltaic tracking bracket according to claim 3, characterized in that, The tracking bracket includes: The main support beam (5) is connected to the bottom of the purlin (2), and the main support beam (5) and the purlin (2) are arranged perpendicular to each other; the main support beam (5) extends along the transverse and / or longitudinal middle of the laminate; The first connector (6) is fixed to the bottom surface of the photovoltaic frame (1), and the end of the cable is connected to the photovoltaic frame (1) through the first connector (6); The second connector (7) is fixed to the purlin (2) or the main beam (5) of the support. The top of the second connector (7) is used to connect the upper cable (3) and is higher than the first connector (6). The third connector (8) is fixed on the main beam (5) of the support. The lower end of the third connector (8) is used to connect the pull cable (4) and is lower than the first connector (6).

5. The photovoltaic tracking bracket according to claim 4, characterized in that, The first connector (6) is a rectangular block structure. A part of the first connector (6) is fixed to the bottom surface of the photovoltaic frame (1), and the other part of the first connector (6) extends out of the side edge of the photovoltaic frame (1) and is used to fix the cable.

6. The photovoltaic tracking bracket according to claim 4, characterized in that, The second connector (7) is fixed on the purlin (2), and the top of the second connector (7) has a connection hole and is higher than the bottom surface of the photovoltaic frame (1); The third connector (8) is L-shaped and at least one is provided. The third connector (8) is fixed on the main beam (5) of the support.

7. The photovoltaic tracking bracket according to claim 4, characterized in that, The cross section of the purlin (2) is U-shaped. One side of the top surface of the U-shape of the purlin (2) is connected to the photovoltaic frame (1), and the bottom surface of the U-shape of the purlin (2) is connected to the main beam (5) of the support. The main beam (5) of the support is set perpendicular to the length direction of the photovoltaic frame (1) and extends out of the edge of the photovoltaic frame (1) at both ends.

8. The photovoltaic tracking bracket according to claim 4, characterized in that, The photovoltaic frame (1) has a purlin (2) fixed on each of its two long sides, and the two purlins (2) are symmetrically arranged along the center line of the photovoltaic frame (1). Two cables are provided on the side of the photovoltaic frame (1) where each of the purlins (2) is located. The two cables are the upper cable (3) and the lower cable (4). Each cable is symmetrically arranged along the center line of the photovoltaic frame (1).

9. The photovoltaic tracking bracket according to claim 1, characterized in that, A rope tensioner is connected to the cable.

10. A support system for driving the photovoltaic module to rotate, characterized in that, The photovoltaic tracking bracket as described in any one of claims 1-9, wherein the support system further includes: A rotating device, which drives the tracking bracket to rotate; A steering device, which is used to steer the tracking bracket; A connecting device that connects the tracking bracket, the rotating device, and the steering device together.

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