Gimbal device and photovoltaic support

Abstract

The application relates to a universal joint device and a photovoltaic support, the universal joint device comprising connecting pieces, a cross block and pin shafts, the number of the connecting pieces being two, the connecting piece comprising a connecting seat and two fork ears located on the same side of the connecting seat, the two fork ears being spaced apart and the two fork ears being provided with first pin holes in a one-to-one correspondence; the cross block comprising two first surfaces symmetrically arranged along a first direction and two second surfaces symmetrically arranged along a second direction, the two first surfaces and the two second surfaces being provided with second pin holes, the first direction and the second direction being intersected; the number of the pin shafts being four, the four pin shafts being divided into two groups, one group of the pin shafts being connected with two first pin holes on one of the connecting pieces and two second pin holes on the first surface, the other group of the pin shafts being connected with two first pin holes on the other connecting piece and two second pin holes on the second surface; the pin shaft comprising a cylindrical segment and a conical segment arranged along the axial direction of the pin shaft, the diameter of the conical segment gradually increasing in a direction away from the cylindrical segment.

Description

Technical Field

[0001] This application relates to the field of solar photovoltaic power generation technology, and in particular to a universal joint device and a photovoltaic support. Background Technology

[0002] As the installed capacity of photovoltaic power plants continues to increase, land resources with good solar energy and flat terrain are becoming increasingly scarce. Complex terrains such as mountains and hills are becoming the primary sites for photovoltaic power plant construction. Current single-axis tracking systems primarily use rigid connections such as clamps, sleeves, and constricted tubes, meaning the main axis can only lie in a straight line. This makes them mainly suitable for flat or relatively flat sites. Developing projects on complex terrain typically requires extensive site leveling and cutting work, or increasing the depth of the driving column. These additional costs significantly reduce the overall economic performance of the project.

[0003] Some related technologies employ complex two-way articulated systems for photovoltaic supports in complex terrains. However, in this system, the pins are mainly limited in the axial direction by retaining rings. The retaining rings are subject to large forces and are prone to falling off, leading to system failure. Utility Model Content

[0004] Therefore, it is necessary to provide a stable universal joint device to address the aforementioned technical problems.

[0005] An embodiment of the first aspect of this application provides a universal joint device, including connectors, cross blocks, and pins. The connectors consist of two parts, each including a connecting seat and two fork lugs located on the same side of the connecting seat. The two fork lugs are spaced apart and aligned with each other, each having a first pin hole. The cross block includes two first surfaces symmetrically arranged along a first direction and two second surfaces symmetrically arranged along a second direction. Second pin holes are provided on both the first and second surfaces, and the first and second directions intersect. The pins consist of four parts, divided into two groups. One group connects two first pin holes on one connector to two second pin holes on the first surface, while the other group connects two first pin holes on another connector to two second pin holes on the second surface. Each pin includes a cylindrical section and a tapered section arranged axially. The diameter of the tapered section gradually increases in the direction away from the cylindrical section. At least a portion of the cylindrical section extends into the second pin hole and is rotatably connected to the cross block, and at least a portion of the tapered section extends into the first pin hole and is connected to the first pin hole.

[0006] In one embodiment, the first pin hole includes a tapered hole that matches the tapered section.

[0007] In one embodiment, the pin also includes a limiting platform located on the side of the tapered section opposite to the cylindrical section; the first pin hole also includes a limiting hole located on the side of the tapered hole opposite to the cross block, the limiting platform matching the limiting hole and at least part of the limiting platform being located within the limiting hole, the limiting hole being used to restrict the pin from rotating relative to the first pin hole.

[0008] In one embodiment, the contour shape of the limiting hole is consistent with the contour shape of the limiting platform, and the contour of the limiting platform includes at least one straight edge.

[0009] In one embodiment, it further includes a cover plate connected to the fork lug and at least covering a portion of the limiting hole.

[0010] In one embodiment, a rotating component is nested in each second pin hole, and the cylindrical segment is rotatably connected to the cross block through the rotating component.

[0011] In one embodiment, the rotating element is a bearing or bushing.

[0012] In one embodiment, a lubricating medium is provided on the side of the rotating member facing the cylindrical section.

[0013] In one embodiment, at least a portion of the rotating member extends out of the second pin hole to create a gap between the fork lug and the surface of the cross block.

[0014] An embodiment of the second aspect of this application provides a photovoltaic support bracket, including two main shafts and a universal joint device as described in any of the first aspects of the above embodiment. The two main shafts are respectively connected to two connectors so that the two main shafts can rotate bidirectionally through the universal joint device.

[0015] The universal joint device provided in this application, by having the cross block include two first surfaces symmetrically arranged along a first direction and two second surfaces symmetrically arranged along a second direction, connects the second pin holes on the two first surfaces and two first pin holes on a connector using two pins, and connects the second pin holes on the two second surfaces and two first pin holes on another connector using two additional pins, enables the two connectors to achieve bidirectional hinge, thereby improving the adaptability of the photovoltaic bracket containing the universal joint device in complex terrain. By having the pin include a cylindrical section and a tapered section arranged axially, with at least a portion of the cylindrical section extending into the second pin hole and rotatably connected to the cross block to bear torque, and at least a portion of the tapered section extending into the first pin hole with its diameter gradually increasing in the direction away from the cylindrical section, the tapered surface of the tapered section bears the axial force, reducing the risk of axial slippage and detachment of the pin, improving the stability of the universal joint device, and having the cylindrical section and tapered section bear the torque and axial force respectively, the risk of pin breakage is reduced, further improving the stability of the universal joint device. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments of this application or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a front view structural diagram of a photovoltaic bracket according to some embodiments of this application.

[0018] Figure 2 A schematic cross-sectional view of an example photovoltaic support structure is shown in AA view.

[0019] Figure 3 An exploded structural diagram of an example photovoltaic support is shown.

[0020] Figure 4 A schematic diagram of an example connector is shown.

[0021] Figure 5 A schematic diagram of an example cross block and rotating component is shown.

[0022] Figure 6 A schematic diagram of an example pin structure is shown.

[0023] Figure 7 A cross-sectional view of an example connector is shown.

[0024] Figure 8 A cross-sectional structural schematic diagram of an example cross block and rotating component is shown.

[0025] Figure label:

[0026] 10. Universal joint assembly; 20. Photovoltaic support bracket; 21. Main spindle;

[0027] 100. Connector; 110. Connecting seat; 120. Fork lug; 121. First pin hole; 122. Tapered hole; 123. Limiting hole; 130. Receiving groove; 140. Oblong hole;

[0028] 200, cross block; 210, first surface; 220, second surface; 230, second pin hole; 240, rotating component;

[0029] 300, Pin; 310, Cylindrical section; 320, Conical section; 330, Limiting platform;

[0030] 400. Cover plate;

[0031] x, the first direction; y, the second direction. Detailed Implementation

[0032] 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.

[0033] 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.

[0034] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] The universal joint device and photovoltaic bracket provided in the embodiments of this application will be described below with reference to the accompanying drawings. It should be noted that the x-direction in the drawings is the first direction, and the y-direction is the second direction. In the drawings, for ease of drawing, the dimensions are not necessarily proportional to the actual dimensions.

[0039] Please refer to Figures 1 to 5 , Figure 1 This is a front view structural diagram of a photovoltaic bracket according to some embodiments of this application. Figure 2 A schematic cross-sectional view of an example photovoltaic support structure is shown in AA view. Figure 3 An exploded structural diagram of an example photovoltaic support is shown. Figure 4 A schematic diagram of an example connector is shown. Figure 5 A schematic diagram of an example cross block and rotating component is shown.

[0040] like Figures 1 to 5As shown, the first aspect of this application provides a universal joint device 10, which can be applied to a photovoltaic bracket 20. The universal joint device 10 includes a connector 100, a cross block 200, and a pin 300. There are two connectors 100, each including a connecting seat 110 and two fork lugs 120 located on the same side of the connecting seat 110. The two fork lugs 120 are spaced apart and have first pin holes 121 aligned with each other. The cross block 200 includes two first surfaces 210 symmetrically arranged along a first direction (x direction in the figure) and two second surfaces 220 symmetrically arranged along a second direction (y direction in the figure). Second pin holes 230 are provided on both the two first surfaces 210 and the two second surfaces 220. The first direction x and the second direction y intersect. There are four pins 300, which are divided into two groups. One group of pins 300 connects two first pin holes 121 on one of the connectors 100 and two second pin holes 230 on the first surface 210. The other group of pins 300 connects two first pin holes 121 on another connector 100 and two second pin holes 230 on the second surface 220. Each pin 300 includes a cylindrical section 310 and a tapered section 320 arranged axially. The diameter of the tapered section 320 gradually increases in the direction away from the cylindrical section 310. At least a portion of the cylindrical section 310 extends into the second pin hole 230 and is rotatably connected to the cross block 200. At least a portion of the tapered section 320 extends into the first pin hole 121 and is connected to the first pin hole 121.

[0041] Optionally, a receiving groove 130 is formed between the two fork lugs 120 on the same connector 100. The receiving groove 130 is used to receive the cross block 200. This can also be understood as the two fork lugs 120 on the same connector 100 being located on both sides of the cross block 200 in the first direction x or the second direction y. The two fork lugs 120 on one connector 100 are respectively disposed opposite to the two first surfaces 210, and the two fork lugs on the other connector 100 are respectively disposed opposite to the two second surfaces 220. Furthermore, the two first pin holes 121 on the same connector 100 are coaxially disposed, and the second pin hole 230 opposite to the first pin hole 121 is also coaxially disposed with the first pin hole 121. That is, the two first pin holes 121 on one connector 100 and the two second pin holes 230 on the cross block 200 are both coaxially disposed, so that the two connectors 100 can be bidirectionally hinged through the cross block 200 and the four pins.

[0042] Optionally, the cross block 200 has an internal cavity to facilitate the insertion of the cylindrical section 310 and to reduce the weight of the cross block 200. The external outline of the cross block 200 is approximately cubic. The two sets of second pin holes 230 on the cross block 200 can be the same or different in size. When the two sets of second pin holes 230 are different in size, the two sets of pins 300 that match the second pin holes 230 are also different in size. Furthermore, the two connecting parts 100 can also be different in size.

[0043] Optionally, the first pin hole 121 includes a tapered hole 122 that matches the tapered section 320, and the diameter of the tapered hole 122 gradually increases in the direction away from the receiving groove 130. When a set of pins 300 connects the cross block 200 and the connector 100, the tapered surfaces on the tapered sections 320 of the two pins 300 located on both sides of the cross block 200 abut against the inner wall surfaces of the two tapered holes 122 respectively. The tapered surfaces of the tapered sections 320 bear the axial force, so that the pins 300 and the cross block 200 will not move axially relative to the connector 100.

[0044] The universal joint device 10 of this application embodiment includes two first surfaces 210 symmetrically arranged along a first direction x and two second surfaces 220 symmetrically arranged along a second direction y in the cross block 200. Two pins 300 connect the second pin holes 230 on the two first surfaces 210 and the two first pin holes 121 on a connector 100. Two other pins 300 connect the second pin holes 230 on the two second surfaces 220 and the two first pin holes 121 on another connector 100, so that the two connectors 100 can achieve bidirectional hinge, thereby improving the adaptability of the photovoltaic bracket 20 containing the universal joint device 10 in complex terrain. By including a cylindrical section 310 and a tapered section 320 arranged axially in the pin 300, at least a portion of the cylindrical section 310 extends into the second pin hole 230 and is rotatably connected to the cross block 200 to bear torque, and at least a portion of the tapered section 320 extends into the first pin hole 121 with its diameter gradually increasing in the direction away from the cylindrical section 310, the tapered surface of the tapered section 320 bears the axial force, reducing the risk of the pin 300 sliding off axially, improving the stability of the universal joint device 10, and providing a simple and reliable structure. Simultaneously, by having the cylindrical section 310 and the tapered section 320 bear the torque and axial force respectively, the risk of the pin 300 breaking is reduced, further improving the stability of the universal joint device 10.

[0045] Please refer to Figures 3 to 7 , Figure 6 A schematic diagram of an example pin structure is shown. Figure 7 A cross-sectional view of an example connector is shown.

[0046] like Figures 3 to 7As shown, in some embodiments, the pin 300 further includes a limiting platform 330 located on the side of the tapered section 320 opposite to the cylindrical section 310. The first pin hole 121 also includes a limiting hole 123 located on the side of the tapered hole 122 opposite to the cross block 200. The limiting platform 330 matches the limiting hole 123 and at least part of the limiting platform 330 is located within the limiting hole 123. The limiting hole 123 is used to restrict the pin 300 from rotating relative to the first pin hole 121.

[0047] Optionally, the outline shape of the limiting hole 123 is consistent with the outline shape of the limiting platform 330, and the outline of the limiting platform 330 includes at least one straight edge. It is easy to understand that since the cylindrical segment 310 and the second pin hole 230 both have circular outlines, the cylindrical segment 310 can rotate relative to the cross block 200 within the second pin hole 230. Conversely, the outline of the limiting platform 330 includes at least one straight edge, which abuts against the inner surface of the aligned limiting hole 123, preventing the limiting platform 330 from rotating relative to the limiting hole 123, thereby preventing relative rotation between the pin 300 and the connecting member 100. In this embodiment, the outline shape of the limiting platform 230 including one straight edge and one arc edge is used as an example for explanation; that is, the outline shape of the limiting platform 230 is D-shaped, and the outline shape of the limiting hole 123 is consistent with the outline shape of the limiting platform 230, also being D-shaped.

[0048] Of course, in other embodiments, the outline of the limiting stage 230 may also be other shapes.

[0049] It is easy to understand that since the limiting hole 123 restricts the rotation of the limiting platform 330 relative to the first pin hole 121, the limiting platform 330 will bear the radial force applied to it by the limiting platform 330.

[0050] Optionally, the universal joint device 10 also includes a cover plate 400, which is connected to the lug 120 and at least partially covers the limiting hole 123. The cover plate 400 is located on the side of the lug 120 opposite to the receiving groove 130, and the cover plate 400 and the lug 120 can be connected by bolts.

[0051] Before installation, the pin 300 and the cross block 200 are independent of each other. During on-site installation, the cross block 200 is placed in the receiving groove 130 of the connector 100, and the pin 300 passes through the first pin hole 121 and extends into the second pin hole 230 on the cross block 200. The pin 300 is fixed to the connector 100 with screws and other fasteners through the cover plate 400, and the installation can be completed. The structure is simple and easy to disassemble and assemble.

[0052] The universal joint device 10 of this application embodiment, by providing a limiting platform 330 and a limiting hole 123 matching the limiting platform 330, and by making the contour of the limiting platform 330 include at least one straight edge, prevents the limiting platform 330 from rotating relative to the limiting hole 123, thereby restricting the rotation of the pin 300 by the limiting hole 123. By making the pin 300 include a cylindrical section 310, a tapered section 320, and a limiting platform 330, where the cylindrical section 310 is used to bear torque, the tapered surface of the tapered section 320 is used to bear axial force, and the contour surface where the straight edge of the limiting platform 330 is located is used to bear radial force, the torque, axial force, and radial force borne by the pin 300 are separated, reducing the risk of pin 300 breakage and thus improving the stability of the universal joint device 10.

[0053] In some embodiments, the minimum radial dimension of the limiting stage 330 is greater than the maximum radial dimension of the tapered segment 320.

[0054] It should be noted that the radial dimension refers to the dimension perpendicular to the axis. For an axisymmetric component like the tapered segment 320, the radial dimension refers to its diameter. For a non-axisymmetric component like the limiting platform 330, the radial dimension refers to the dimension on the cross-section passing through the axis. Since the minimum radial dimension of the limiting platform 330 is greater than the maximum radial dimension of the tapered segment 320, the limiting platform 330 can be understood as a boss that radially expands outward relative to the tapered segment 320. Similarly, the tapered hole 122 matches the tapered segment 320, and the limiting hole 123 matches the limiting platform 330, so that the first pin hole 121 can be understood as an irregular countersunk hole.

[0055] The universal joint device 10 of this application embodiment makes the minimum radial dimension of the limiting platform 330 greater than the maximum radial dimension of the tapered section 320, so that the contour surface of the limiting hole 123 facing the tapered hole 122 can also apply a certain axial limit to the pin 300, thereby preventing the pin 300 and the cross block 200 from axially moving relative to the connecting member 100, and further distributing the axial force borne by the pin 300 to both the tapered section 320 and the limiting platform 330, thereby further reducing the risk of the pin 300 breaking and improving the stability of the universal joint device 10.

[0056] Please refer to Figure 3 , Figure 5 and Figure 8 , Figure 8 A cross-sectional structural schematic diagram of an example cross block and rotating component is shown.

[0057] like Figure 3 , Figure 5 and Figure 8 As shown, in some embodiments, each second pin hole 230 is nested with a rotating member 240, and the cylindrical segment 310 is rotatably connected to the cross block 200 through the rotating member 240.

[0058] Optionally, the rotating component 240 can be a bearing or a bushing. In this embodiment, the rotating component 240 is described as a bushing, and the bushing is made of a high-strength and wear-resistant material.

[0059] Optionally, the rotating component 240 is provided with a lubricating medium on the side facing the cylindrical section 310, i.e., the rotating component 240 is a self-lubricating bushing. A self-lubricating bushing, also called an oil-free bushing, uses the heat generated by the friction surface to melt the lubricating medium and form a uniform lubricating film, achieving automatic lubrication of the friction surface. The lubricating medium can be at least one of PTFE (polytrifluoroethylene-ethylene copolymer), graphite, polymer composite materials, etc.

[0060] Optionally, at least part of the rotating member 240 extends out of the second pin hole 230 to create a gap between the fork lug 120 and the surface of the cross block 200.

[0061] The universal joint device 10 of this application embodiment reduces the friction between the cylindrical section 310 and the second pin hole 230 by providing a rotating member 240, thereby achieving a rotatable connection between the cylindrical section 310 and the cross block 200. By providing a lubricating medium on the side of the rotating member 240 facing the cylindrical section 310, there is no need to add lubricating oil periodically, reducing maintenance costs and preventing grease leakage. By allowing at least a portion of the rotating member 240 to extend out of the second pin hole 230, a gap is formed between the fork lug 120 and the surface of the cross block 200, reducing the frictional resistance between the cross block 200 and the fork lug 120, thereby improving the smoothness of rotation between the cross block 200 and the connecting member 100.

[0062] like Figures 1 to 3 As shown, an embodiment of the second aspect of this application also provides a photovoltaic bracket 20, including two main shafts 21 and a universal joint device 10 of any of the embodiments of the first aspect described above. Since the photovoltaic bracket 20 provided by the second aspect of this application includes the universal joint device 10 of any of the embodiments described above, the photovoltaic bracket 20 provided by the second aspect of this application has the beneficial effects of the universal joint device 10 of any of the embodiments described above, which will not be repeated here.

[0063] The two main shafts 21 are connected to two connecting parts 100 respectively, so that the two main shafts 21 can rotate in both directions through the universal joint device 10, thereby enabling the two main shafts 21 to achieve adjustment in the up and down and left and right directions respectively.

[0064] Optionally, the connector 100 is fastened to the spindle 21 by means of rivets or bolts to prevent axial slippage. The connector 100 has a slotted hole 140 to reduce the axial driving accuracy requirements of the spindle 21. The connector 100 fits over the spindle 21, allowing it to be matched with spindles of the same specification but different thicknesses, thus reducing the variety and specifications of connectors.

[0065] 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 application.

[0066] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this 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 application should be determined by the appended claims.

Claims

1. A universal joint device, characterized in that, include: The connector is provided in two parts. Each connector includes a connecting seat and two fork lugs located on the same side of the connecting seat. The two fork lugs are spaced apart and have first pin holes aligned with each other. The cross block includes two first surfaces symmetrically arranged along a first direction and two second surfaces symmetrically arranged along a second direction. A second pin hole is provided on both the two first surfaces and the two second surfaces. The first direction and the second direction are intersecting. The pins are arranged in two groups. One group of pins connects two first pin holes on one of the connectors and two second pin holes on the first surface. The other group of pins connects two first pin holes on another connector and two second pin holes on the second surface. Each pin includes a cylindrical section and a tapered section arranged axially. The diameter of the tapered section gradually increases in the direction away from the cylindrical section. At least a portion of the cylindrical section extends into the second pin hole and is rotatably connected to the cross block. At least a portion of the tapered section extends into the first pin hole and is connected to the first pin hole.

2. The universal joint device according to claim 1, characterized in that, The first pin hole includes a tapered hole that matches the tapered section.

3. The universal joint device according to claim 2, characterized in that, The pin also includes a limiting platform located on the side of the tapered section opposite to the cylindrical section; The first pin hole also includes a limiting hole located on the side of the tapered hole opposite to the cross block. The limiting platform matches the limiting hole and at least part of the limiting platform is located within the limiting hole. The limiting hole is used to restrict the pin shaft from rotating relative to the first pin hole.

4. The universal joint device according to claim 3, characterized in that, The outline shape of the limiting hole is consistent with the outline shape of the limiting platform, and the outline of the limiting platform includes at least one straight edge.

5. The universal joint device according to claim 3, characterized in that, Also includes: A cover plate is connected to the fork lug and at least partially covers the limiting hole.

6. The universal joint device according to claim 1, characterized in that, Each of the second pin holes is fitted with a rotating component, and the cylindrical segment is rotatably connected to the cross block through the rotating component.

7. The universal joint device according to claim 6, characterized in that, The rotating component is a bearing or bushing.

8. The universal joint device according to claim 6, characterized in that, The rotating component is provided with a lubricating medium on the side facing the cylindrical section.

9. The universal joint device according to claim 6, characterized in that, At least a portion of the rotating member extends out of the second pin hole to create a gap between the fork lug and the surface of the cross block.

10. A photovoltaic support structure, characterized in that, It includes two spindles and a universal joint device as described in any one of claims 1 to 9, wherein the two spindles are respectively connected to the two connecting members so that the two spindles can rotate bidirectionally through the universal joint device.

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