Linkage structure, photovoltaic tracking support and device

Abstract

The application relates to a connecting rod structure, a photovoltaic tracking support and a device, and belongs to the technical field of photovoltaic laying. The connecting rod structure comprises two connecting parts, the connecting part comprises a base body, a mounting body and a functional assembly, the mounting body is arranged on one side of the base body and is used for connecting a main beam, the functional assembly is arranged on the side of the base body away from the mounting body and comprises a first connecting rod, a second connecting rod and a third connecting rod, one end of the first connecting rod is fixedly connected with the base body, one end of the second connecting rod and the third connecting rod is rotatably connected with the base body and is arranged on the two sides of the first connecting rod, the functional assemblies of the two connecting parts are oppositely arranged, and the two first connecting rods, the two second connecting rods and the two third connecting rods are connected through spherical hinge bearings. The connecting rod structure, the photovoltaic tracking support and the device provided by the application at least solve the problem of excessively high photovoltaic laying cost in the prior art.

Description

Technical Field

[0001] This application relates to the field of photovoltaic installation technology, and in particular to a linkage structure, a photovoltaic tracking bracket and device. Background Technology

[0002] As the installed capacity of photovoltaic power plants continues to increase, land resources with good solar resources and flat terrain are becoming increasingly scarce. Land with complex terrain, such as mountains and hills, is becoming the primary site for photovoltaic power plant construction. When deploying photovoltaic tracking brackets on complex and undulating terrain, the main axis can usually only be set in a straight line. This typically requires leveling or cutting the site, or increasing the driving depth of the photovoltaic tracking bracket columns, leading to a sharp increase in installation costs and a significant decrease in overall economic efficiency. Utility Model Content

[0003] Therefore, it is necessary to address the issue of high construction costs for photovoltaic tracking brackets by providing a linkage structure, photovoltaic tracking bracket, and device that can adapt to complex terrain and reduce construction costs.

[0004] This application provides a linkage structure including two connecting parts. Each connecting part includes a base, a mounting body, and a functional component. The mounting body is disposed on one side of the base and is used to connect to the main beam. The functional component is disposed on the side of the base away from the mounting body and includes a first link, a second link, and a third link. One end of the first link is fixedly connected to the base, and one end of the second and third links is rotatably connected to the base and disposed on both sides of the first link. The functional components of the two connecting parts are arranged facing each other, and the two first links, the two second links, and the two third links are all connected by ball joint bearings.

[0005] In some embodiments, the substrate includes a base plate and a mounting plate connected to one side of the base plate, the mounting plate being disposed perpendicular to the base plate; a mounting body is disposed on the side of the base plate away from the mounting plate, a first connecting rod is disposed on the surface of the mounting plate away from the base plate, and a second connecting rod and a third connecting rod are both disposed on the mounting plate.

[0006] In some embodiments, the second link includes a rod body and two clamping plates disposed at one end of the rod body. The two clamping plates are arranged in parallel and spaced apart, and a mounting plate is clamped between the two clamping plates. One of the clamping plates and the mounting plate is provided with a protruding post, and the other is provided with a hole, which is fitted on the outside of the protruding post.

[0007] In some embodiments, the base, the mounting body, and the first connecting rod are integrally formed.

[0008] In some embodiments, the ball bearing includes a bearing body and a bearing housing. The bearing body is spherical, and the bearing housing is provided with a round-bottomed groove for receiving the bearing body. At least a portion of the bearing body is movably disposed in the bearing housing. The bearing body is connected to a first link, a second link, and a third link of one of the two connecting parts. The bearing housing is connected to the first link, a second link, and a third link of the other of the two connecting parts.

[0009] In some embodiments, the bearing body includes a ball portion and an anti-torsion structure disposed on the outer surface of the ball portion, the anti-torsion structure being configured to cooperate with the bearing seat to restrict the rotation of the first connecting rod along the axial direction.

[0010] In some embodiments, the anti-torsion structure is a protrusion that extends beyond the outer surface of the sphere.

[0011] In some embodiments, there are multiple anti-torsion structures, which are evenly distributed on the outer surface of the spherical part with the axis of the first connecting rod as the central axis.

[0012] This application also provides a photovoltaic tracking bracket, which includes a linkage structure as provided in any of the foregoing embodiments.

[0013] This application also provides a photovoltaic tracking device, which includes a photovoltaic tracking bracket as provided in any of the foregoing embodiments.

[0014] The linkage structure, photovoltaic tracking bracket, and device provided in the embodiments of this application offer at least the following beneficial effects:

[0015] By setting the linkage structure to include two connecting parts with their functional components facing each other, and connecting the two first links, the two second links, and the two third links through ball joint bearings, and since one end of the first link is fixedly connected to the base, while one end of the second and third links is rotatably connected to the base, the angle between the two connecting parts in the linkage structure can be adjusted through the ball joint bearing connection to adapt to complex installation terrain. At the same time, the connection method between the first, second, and third links and the base gives the linkage structure good torsional resistance, improving the structural reliability of the linkage structure.

[0016] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is an isometric schematic diagram of a linkage structure provided in an embodiment of this application;

[0019] Figure 2 This is a top view of a linkage structure provided in an embodiment of this application;

[0020] Figure 3 This is a front view of a linkage structure provided in an embodiment of this application;

[0021] Figure 4 This is a side view of a linkage structure provided in an embodiment of this application;

[0022] Figure 5 This is a schematic diagram of the bearing body in a connecting rod structure provided in an embodiment of this application;

[0023] Figure 6 This is a schematic diagram of the bearing housing in a connecting rod structure provided in an embodiment of this application.

[0024] Explanation of reference numerals in the attached drawings: 100, connecting rod structure; 10, connecting part; 11, base body; 111, base plate; 112, mounting plate; 12, mounting body; 13, functional component; 131, first connecting rod; 132, second connecting rod; 1321, rod body; 1322, clamping plate; 133, third connecting rod; 101, ball joint bearing; 1011, bearing body; 1014, ball body; 1015, anti-torsion structure; 1012, bearing seat; 1016, round bottom groove; 102, protruding post. Detailed Implementation

[0025] 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.

[0026] 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.

[0027] Furthermore, where the term "and / or" appears, "and / or" merely describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship. Where the terms "first" and "second" appear, these terms are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" can explicitly or implicitly include at least one of those features. 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.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] Please refer to the following: Figures 1 to 6 This application provides a linkage structure 100, which includes two connecting parts 10. Each connecting part 10 includes a base 11, a mounting body 12, and a functional component 13. The mounting body 12 is disposed on one side of the base 11 and is used to connect a main beam (not shown). The functional component 13 is disposed on the side of the base 11 away from the mounting body 12 and includes a first connecting rod 131, a second connecting rod 132, and a third connecting rod 133. One end of the first connecting rod 131 is fixedly connected to the base 11, and one end of the second connecting rod 132 and the third connecting rod 133 are rotatably connected to the base 11 and disposed on both sides of the first connecting rod 131. The functional components 13 of the two connecting parts 10 are arranged facing each other, and the two first connecting rods 131, the two second connecting rods 132, and the two third connecting rods 133 are all connected by ball joint bearings 101.

[0032] The linkage structure 100 is the core component of the photovoltaic tracking bracket. Multiple main beams are connected by multiple linkage structures 100 to provide support for the main beams, enabling the main beams to support the installation of photovoltaic modules. At the same time, the angle between adjacent main beams can be adjusted through the linkage structure 100 so that the photovoltaic tracking bracket can adapt to complex installation terrain.

[0033] The linkage structure 100 includes two connecting parts 10, meaning that the main structure of the linkage structure 100 is composed of two identical connecting parts 10. The two connecting parts 10 are used to connect two different main beams, thereby adjusting the angle between the two main beams through the linkage structure 100 to adapt to complex installation terrain. In this way, during the installation of the photovoltaic tracking bracket, there is no need to level or cut the installation terrain as in related technologies, nor is it necessary to increase the depth of the column driving. After the column is installed on the ground (with the linkage structure 100 installed at the end of the column facing away from the ground), the linkage structure 100 can adjust the angle between two adjacent main beams, allowing the main beams to adapt to the terrain through the linkage structure 100.

[0034] In these embodiments of the present application, the connecting part 10 includes a base 11, a mounting body 12 and a functional component 13, which means that the two connecting parts 10 have the same structure and each includes a base 11, a mounting body 12 and a functional component 13.

[0035] The base 11 serves as a supporting member for the connecting portion 10, providing an installation position and support for the mounting body 12 and the functional component 13. In these embodiments of this application, the base 11 may be block-shaped, plate-shaped, or other irregularly shaped.

[0036] Mounting body 12 is a component in connecting part 10 used for mounting the main beam. Mounting body 12 is disposed on one side of base 11. In a possible embodiment, base 11 is plate-shaped, and mounting body 12 is disposed on one side of base 11 along the thickness direction.

[0037] In these embodiments of this application, the mounting body 12 can be detachably connected to the main beam to facilitate the dispersed transportation of the photovoltaic tracking brackets to the installation site, where they can then be installed. Exemplarily, in some embodiments, a snap-fit ​​structure can be provided on the mounting body 12, allowing for a detachable connection between the main beam and the mounting body 12 during subsequent installation. Alternatively, in some embodiments, the mounting body 12 can be detachably connected using screws, bolts, or other connecting components.

[0038] The functional components 13 of the two connecting parts 10 are arranged facing each other so that the two connecting parts 10 are connected by the facing functional components 13. The functional components 13 are functional components in the linkage structure 100 used to realize connection, angle adjustment and torque transmission. The functional components 13 are located on the side of the base 11 away from the mounting body 12. In this way, the two connecting parts 10 can be connected by the functional components 13, and the side of the base 11 of the two connecting parts 10 away from the functional components 13 can be connected to the main beam through the mounting body 12, thereby gradually installing a complete photovoltaic tracking bracket at the installation site.

[0039] The functional component 13 includes a first link 131, a second link 132 and a third link 133. One end of the first link 131 is fixedly connected to the base 11 so that the first link 131 mainly plays the role of connection and improves the structural stability between the two connecting parts 10.

[0040] One end of the second link 132 and the third link 133 are rotatably connected to the base 11, so as to provide good transmission capability for the connecting part 10 by utilizing the second link 132 and the third link 133 to transmit torque from one end of the link structure 100 to the other end. In this way, when the angle of the main beam connected to one end of the link structure 100 changes, the angle can be adjusted through the second link 132 and the third link 133 in the link structure 100, and the angle change of the main beam can be transmitted to the adjacent main beam more smoothly.

[0041] Meanwhile, by setting the second link 132 and the third link 133 on both sides of the first link 131, the torsional resistance of the link structure 100 can be improved by the second link 132 and the third link 133, reducing the risk of the link structure 100 jamming when the bending moment is large, and further improving the reliability of the link structure 100.

[0042] The two first links 131, the two second links 132, and the two third links 133 are all connected by ball joint bearings 101. This means that the links between the two connecting parts 10 are connected by ball joint bearings 101. In this way, the ball joint bearings 101 can provide a large degree of freedom for angle adjustment between the two connecting parts 10, so as to better adapt to complex installation terrain. By giving the link structure 100 good angle adjustment capability, the requirements for terrain flatness can be reduced during the laying of photovoltaic tracking brackets, and there is no need to precisely control the driving depth of the column. This greatly reduces the difficulty of laying photovoltaic tracking brackets and improves the economic benefits brought by the laying of photovoltaic tracking brackets.

[0043] According to the linkage structure 100 provided in the embodiments of this application, the linkage structure 100 includes two connecting parts 10, and the functional components 13 of the two connecting parts 10 are arranged facing each other. The two first connecting rods 131, the two second connecting rods 132, and the two third connecting rods 133 are all connected by ball joint bearings 101. Since one end of the first connecting rod 131 is fixedly connected to the base 11, while one end of the second connecting rod 132 and the third connecting rod 133 is rotatably connected to the base 11, the angle between the two connecting parts 10 in the linkage structure 100 can be adjusted through the connection of the ball joint bearings 101 to adapt to complex installation terrain. At the same time, the connection method between the first connecting rod 131, the second connecting rod 132, and the third connecting rod 133 and the base 11 gives the linkage structure 100 a good anti-torsion effect and improves the structural reliability of the linkage structure 100.

[0044] In some embodiments, the substrate 11 includes a base plate 111 and a mounting plate 112 connected to one side of the base plate 111. The mounting plate 112 is disposed perpendicular to the base plate 111. The mounting body 12 is disposed on the side of the base plate 111 away from the mounting plate 112. A first connecting rod 131 is disposed on the surface of the mounting plate 112 away from the base plate 111. A second connecting rod 132 and a third connecting rod 133 are both disposed on the mounting plate 112.

[0045] In these embodiments of the present application, the substrate 11 is an irregular structure composed of plates, wherein the substrate 111 is a partition plate between the mounting body 12 and the functional component 13, that is, the mounting body 12 and the functional component 13 are respectively disposed on both sides of the substrate 111 in the thickness direction.

[0046] Mounting plate 112 is a component in base 11 used to mount functional component 13. It should be noted that mounting plate 112 needs to be set perpendicular to base plate 111 so that the first link 131, the second link 132 and the third link 133 are set behind mounting plate 112. The plate-like structure of mounting plate 112 simplifies the setting difficulty of the second link 132 and the third link 133, so that the second link 132 and the third link 133 can be rotatably connected to mounting plate 112.

[0047] Mounting body 12 is disposed on the side of base plate 111 away from mounting plate 112 for connecting main beams; first connecting rod 131 is disposed on the surface of mounting plate 112 away from base plate 111, and second connecting rod 132 and third connecting rod 133 are both disposed on mounting plate 112. In this way, the second connecting rod 132 and the third connecting rod 133 can rotate along an axis perpendicular to mounting plate 112. The structure is simple and easy to set up. The end positions of the first connecting rod 131, the second connecting rod 132 and the third connecting rod 133 connected to mounting plate 112 remain unchanged. The end of the second connecting rod 132 and the third connecting rod 133 away from mounting plate 112 can change the relative position relationship with the first connecting rod 131 through rotational connection with mounting plate 112 to adapt to different angle requirements between adjacent main beams.

[0048] In some embodiments, the second connecting rod 132 includes a rod body 1321 and two clamping plates 1322 disposed at one end of the rod body 1321. The two clamping plates 1322 are arranged in parallel and spaced apart. A mounting plate 112 is clamped between the two clamping plates 1322. One of the clamping plates 1322 and the mounting plate 112 is provided with a protrusion 102, and the other is provided with a hole (not labeled). The hole is fitted on the outside of the protrusion 102.

[0049] The second link 132 includes a link body 1321, wherein the link body 1321 is a structural component of the second link 132 and can be used to define parameters such as the length and width of the second link 132. The two ends of the link body 1321 are respectively used to connect the mounting plate 112 and the link body 1321 of the second link 132 in another connecting part 10.

[0050] At the end where the second connecting rod 132 connects to the mounting plate 112, the second connecting rod 132 is provided with two clamping plates 1322, which are arranged in parallel and spaced apart. The mounting plate 112 is clamped between the two clamping plates 1322. In this way, by clamping the mounting plate 112 with the two clamping plates 1322, the installation difficulty of the second connecting rod 132 can be reduced, and the assembly efficiency of the connecting rod structure 100 can be improved.

[0051] It is understood that one end of each of the two clamping plates 1322 is connected to the rod body 1321, and the two clamping plates 1322 are arranged relatively parallel and spaced apart to form a gap between the two clamping plates 1322, thereby using the gap to clamp the second connecting rod 132 on both sides of the mounting plate 112 in the thickness direction.

[0052] One of the clamping plate 1322 and the mounting plate 112 is provided with a protrusion 102, and the other is provided with a hole (not labeled), which is fitted onto the outside of the protrusion 102. That is, in these embodiments of this application, the protrusion 102 serves as the rotation center of the second connecting rod 132, and through its cooperation with the hole, it enables the assembly and positioning of the second connecting rod 132 and the mounting plate 112, thereby realizing the rotational connection between the second connecting rod 132 and the mounting plate 112.

[0053] The structure of the third link 133 is the same as that of the second link 132, and will not be described again here.

[0054] In some embodiments, the base 11, the mounting body 12, and the first connecting rod 131 are integrally formed. This improves the structural consistency of the three components and further enhances the structural strength of the connection portion 10. For example, the base 11, the mounting body 12, and the first connecting rod 131 can be integrally formed by die casting, injection molding, or other methods.

[0055] In some embodiments, the ball bearing 101 includes a bearing body 1011 and a bearing seat 1012. The bearing body 1011 is spherical, and the bearing seat 1012 is provided with a round-bottomed groove 1016 for accommodating the bearing body 1011. At least a portion of the bearing body 1011 is movably disposed in the bearing seat 1012. The bearing body 1011 is connected to a first connecting rod 131, a second connecting rod 132, and a third connecting rod 133 of one of the two connecting parts 10. The bearing seat 1012 is connected to the first connecting rod 131, a second connecting rod 132, and a third connecting rod 133 of the other of the two connecting parts 10.

[0056] That is, in the two connecting parts 10, the functional component 13 of one is connected to the bearing body 1011, and the functional component 13 of the other is connected to the bearing seat 1012. When the two connecting parts 10 are connected, the two first connecting rods 131, the two second connecting rods 132 and the two third connecting rods 133 are connected by three ball joint bearings 101 respectively, so that each pair of connecting structures has a high degree of rotational freedom to adapt to complex installation site terrain.

[0057] In the ball joint bearing 101, at least a portion of the bearing body 1011 is movably disposed in the bearing seat 1012. This means that the round bottom groove 1016 of the bearing seat 1012 can be semi-circular, with part of the bearing body 1011 exposed outside the round bottom groove 1016. In this way, the interference of the round bottom groove 1016 to the rod body portion 1321 (the first connecting rod 131, the second connecting rod 132 and the third connecting rod 133 all have rod bodies) can be reduced, further improving the angle adjustment capability of the connecting rod structure 100.

[0058] In some embodiments, the bearing body 1011 includes a ball portion 1014 and an anti-torsion structure 1015 disposed on the outer surface of the ball portion 1014. The anti-torsion structure 1015 is configured to cooperate with the bearing seat 1012 to restrict the rotation of the first connecting rod 131 along the axial direction.

[0059] It should be noted that in the bearing body 1011, an anti-torsion structure 1015 is provided on the outer surface of the ball portion 1014. Correspondingly, in the bearing seat 1012, a corresponding mating structure should also be provided on the round bottom groove 1016 so that the anti-torsion structure 1015 can be accurately installed in the round bottom groove 1016.

[0060] The anti-torsion structure 1015 is configured to cooperate with the bearing housing 1012 to restrict the rotation of the first connecting rod 131 along the axial direction. That is, the anti-torsion structure 1015 cooperates with the groove structure provided in the round bottom groove 1016 in the bearing housing 1012 to restrict the bearing body 1011 from rotating axially in the bearing housing 1012, thereby further improving the anti-torsion performance of the first connecting rod 131 and enabling the first connecting rod 131 to also have the function of transmitting torque, thereby further improving the reliability of the connecting rod structure 100.

[0061] Of course, the anti-torsion structure 1015 can connect not only the two first links 131, but also the two second links 132 or the two third links 133, which can be selected according to actual needs.

[0062] In some embodiments, the anti-torsion structure 1015 is a protrusion that protrudes from the outer surface of the spherical portion 1014. In this case, a recessed structure adapted to the protrusion may be provided in the round-bottomed groove 1016 of the bearing seat 1012.

[0063] Alternatively, in some embodiments, the anti-torsion structure 1015 may be a recessed structure formed by the indentation of the outer surface of the spherical portion 1014, while a protruding structure adapted to the recessed structure may be provided in the round-bottomed groove 1016 of the bearing seat 1012. Both of these configuration methods can be freely selected as needed.

[0064] In some embodiments, there are multiple anti-torsion structures 1015, and the multiple anti-torsion structures 1015 are evenly distributed on the outer surface of the spherical portion 1014 with the axis of the first connecting rod 131 as the central axis.

[0065] The arrangement of multiple anti-torsion structures 1015 can further improve the torsional resistance of the connecting rod structure 100 and further enhance its reliability. For example, in some embodiments of this application, the anti-torsion structure 1015 and the round-bottomed groove 1016 can be configured with a spline joint to improve the transmission efficiency between connecting rods, thereby further enhancing the torque transmission capability and torsional resistance of the connecting rod structure 100.

[0066] This application also provides a photovoltaic tracking bracket, which includes a linkage structure 100 as provided in any of the foregoing embodiments. The photovoltaic bracket also includes columns for supporting the linkage structure 100 on the ground, and main beams connecting adjacent linkage structures 100.

[0067] This application also provides a photovoltaic tracking device, which includes a photovoltaic tracking bracket as provided in any of the foregoing embodiments.

[0068] 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 above 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.

[0069] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, 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 linkage structure, characterized in that, It includes two connecting parts, the connecting parts including: Matrix; The mounting body is disposed on one side of the base and is used to connect the main beam; A functional component is disposed on the side of the base away from the mounting body, and includes a first connecting rod, a second connecting rod and a third connecting rod. One end of the first connecting rod is fixedly connected to the base, and one end of the second connecting rod and the third connecting rod are rotatably connected to the base and disposed on both sides of the first connecting rod. The functional components of the two connecting parts are arranged facing each other, and the two first links, the two second links, and the two third links are all connected by ball joint bearings.

2. The linkage structure according to claim 1, characterized in that, The substrate includes a base plate and a mounting plate connected to one side of the base plate, the mounting plate being disposed perpendicular to the base plate; The mounting body is disposed on the side of the substrate away from the mounting plate, the first connecting rod is disposed on the surface of the mounting plate away from the substrate, and the second connecting rod and the third connecting rod are both disposed on the mounting plate.

3. The linkage structure according to claim 2, characterized in that, The second link includes a rod body and two clamping plates disposed at one end of the rod body. The two clamping plates are arranged in parallel and spaced apart, and the mounting plate is clamped between the two clamping plates. One of the clamping plate and the mounting plate is provided with a protruding post, and the other is provided with a hole, the hole being fitted onto the outside of the protruding post.

4. The linkage structure according to claim 1, characterized in that, The base, the mounting body, and the first connecting rod are integrally formed.

5. The linkage structure according to claim 1, characterized in that, The ball bearing includes a bearing body and a bearing housing. The bearing body is spherical, and the bearing housing is provided with a round-bottomed groove for accommodating the bearing body. At least a portion of the bearing body is movably disposed in the bearing housing. The bearing body is connected to the first connecting rod, the second connecting rod, and the third connecting rod of one of the two connecting parts; the bearing seat is connected to the first connecting rod, the second connecting rod, and the third connecting rod of the other of the two connecting parts.

6. The linkage structure according to claim 5, characterized in that, The bearing body includes a spherical portion and an anti-torsion structure disposed on the outer surface of the spherical portion. The anti-torsion structure is configured to cooperate with the bearing seat to restrict the axial rotation of the first connecting rod.

7. The linkage structure according to claim 6, characterized in that, The anti-torsional structure is a protruding structure that protrudes from the outer surface of the spherical part.

8. The linkage structure according to claim 6, characterized in that, The number of anti-torsion structures is multiple, and the multiple anti-torsion structures are evenly distributed on the outer surface of the sphere with the axis of the first connecting rod as the central axis.

9. A photovoltaic tracking bracket, characterized in that, Includes the linkage structure as described in any one of claims 1 to 8.

10. A photovoltaic tracking device, characterized in that, Including the photovoltaic tracking bracket as described in claim 9.

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