Bearing assembly and photovoltaic tracking bracket

Abstract

This utility model discloses a bearing assembly and a photovoltaic tracking bracket. The bearing assembly includes: a first bearing housing, comprising a bearing base and a first bearing outer ring, the bearing base and the first bearing outer ring being non-detachably fixedly connected; a second bearing housing connected to the first bearing housing, the second bearing housing including a bearing cover and a second bearing outer ring, the bearing cover and the second bearing outer ring being non-detachably fixedly connected, the first bearing outer ring and the second bearing outer ring forming a through hole; and a bearing adapted and disposed within the through hole. This bearing assembly and photovoltaic tracking bracket can reduce the friction between the bearing and the bearing housing, improve the bearing's service life, and ensure the bearing's tracking accuracy.

Description

Technical Field

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

[0002] In photovoltaic tracking brackets, plastic bearings are increasingly widely used to ensure smooth rotation of the main shaft and enable photovoltaic modules to rotate with the sun's trajectory, thereby improving power generation efficiency. The design of the bearing housing that matches the plastic bearing is generally carried out using sand core casting molds to form concave cavities. However, the surface roughness of the cast concave surface is large, resulting in high friction between the plastic bearing and the bearing, which affects the tracking accuracy of the photovoltaic tracking bracket.

[0003] Therefore, it is necessary to provide a new bearing assembly and photovoltaic tracking bracket to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a bearing assembly and a photovoltaic tracking bracket that can reduce the friction between the bearing and the bearing housing.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A bearing assembly, comprising:

[0007] The first bearing housing includes a bearing base and a first bearing outer ring, wherein the bearing base is fixedly connected to the first bearing outer ring in an irremovable manner;

[0008] The second bearing housing is connected to the first bearing housing. The second bearing housing includes a bearing cover and a second bearing outer ring. The bearing cover is fixedly connected to the second bearing outer ring in a non-detachable manner. The first bearing outer ring and the second bearing outer ring together form a through hole.

[0009] The bearing is fitted into the through hole.

[0010] As a further improvement of the present invention, the bearing base and the bearing cover are respectively formed by pressure molding, the first bearing outer ring is injection molded on the bearing base, and the second bearing outer ring is injection molded on the bearing cover.

[0011] As a further improvement of the present invention, the inner surfaces of the bearing base and the bearing cover are respectively provided with a first limiting part and a second limiting part, the outer ring of the first bearing is provided with a first mating part corresponding to the first limiting part, and the outer ring of the second bearing is provided with a second mating part corresponding to the second limiting part.

[0012] As a further improvement of the present invention, the outer surfaces of the bearing base and the bearing cover are respectively provided with a first reinforcing part and a second reinforcing part, the first reinforcing part corresponding to the first limiting part, and the second reinforcing part corresponding to the second limiting part.

[0013] As a further improvement of the present invention, the first bearing outer ring and the second bearing outer ring each have two first convex walls and two second convex walls, the two first convex walls respectively conforming to the axial sides of the bearing base, and the two second convex walls respectively conforming to the axial sides of the bearing cover.

[0014] As a further improvement of the present invention, one end of the first bearing housing is rotatably connected to one end of the second bearing housing by a rotating pin, and the other end of the first bearing housing is detachably fixedly connected to the other end of the second bearing housing by a connecting assembly.

[0015] As a further improvement of the present invention, one end of the bearing base is provided with a first adapter portion, the first adapter portion is provided with a first hole, one end of the bearing cover is provided with a second adapter portion, the second adapter portion is provided with a second hole, the rotating pin passes through the first hole and the second hole, and the first bearing seat and the second bearing seat can rotate around the axial direction of the rotating pin.

[0016] As a further improvement of the present invention, the other end of the bearing base is provided with a first fixed part, the first fixed part is provided with a third hole, the other end of the bearing cover is provided with a second fixed part, the second fixed part is provided with a fourth hole, the connecting assembly includes a pin, a hinge bolt and a nut, the pin passes through one of the third hole and the fourth hole and the hinge bolt, the hinge bolt passes through the other of the third hole and the fourth hole and is locked and fixed by the nut.

[0017] As a further improvement of this utility model, the inner surfaces of the first bearing outer ring and the second bearing outer ring are formed as concave spherical surfaces, and the outer surface of the bearing is formed as a convex spherical surface.

[0018] To achieve the above objectives, the present invention also adopts the following technical solution:

[0019] A photovoltaic tracking bracket includes a drive mechanism, a main shaft, and a bearing assembly as described in any of the preceding claims, wherein the main shaft passes through the bearing assembly, and the drive mechanism drives the main shaft to rotate.

[0020] Compared with the prior art, the beneficial effects of the bearing assembly and photovoltaic tracking bracket of this utility model are as follows: by setting a non-removable first bearing outer ring on the bearing base and a non-removable second bearing outer ring on the bearing cover, the friction between the bearing and the bearing housing is reduced, the service life of the bearing is improved, and the bearing's tracking accuracy is guaranteed; and the first bearing outer ring and the second bearing outer ring are respectively pre-fixed to the bearing base and the bearing cover, which can reduce on-site installation procedures and improve installation efficiency. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of a bearing assembly according to a specific embodiment of the present utility model;

[0022] Figure 2 This is an exploded structural diagram of a bearing assembly according to a specific embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the assembly of the first bearing housing and the second bearing housing according to a specific embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of the first bearing outer ring and the second bearing outer ring according to a specific embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the assembly of the bearing base and bearing cover according to a specific embodiment of the present utility model;

[0026] Figure 6 for Figure 5 A schematic diagram of the decomposed structure;

[0027] Figure 7 This is a schematic diagram of the bearing base and bearing cover in the open state according to a specific embodiment of the present utility model;

[0028] Figure 8 This is an exploded structural diagram of a bearing according to a specific embodiment of the present invention. Detailed Implementation

[0029] The exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. If several embodiments exist, features in these embodiments may be combined with each other without conflict. When the description refers to the drawings, unless otherwise stated, the same numbers in different drawings represent the same or similar elements. The descriptions in the following exemplary embodiments do not represent all embodiments consistent with the present invention; rather, they are merely examples of apparatuses, products, and / or methods consistent with some aspects of the present invention as set forth in the claims.

[0030] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to limit the scope of protection of this invention. The singular forms “a,” “the,” or “the” used in the specification and claims of this invention are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0031] It should be understood that the terms "first," "second," and similar words used in the specification and claims of this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish the features. Similarly, the terms "an" or "a" do not indicate a quantity limitation, but rather indicate the presence of at least one. Unless otherwise stated, the terms "front," "back," "left," "right," "upper," "lower," and similar words appearing in this utility model are for ease of explanation only and are not limited to a specific location or spatial orientation. The terms "comprising" or "including" are an open-ended expression, meaning that the element preceding "comprising" or "including" covers the element following "comprising" or "including" and its equivalents, which does not exclude that the element preceding "comprising" or "including" may also include other elements. If "several" appears in this utility model, it means two or more.

[0032] Please see Figures 1 to 8 As shown, this embodiment discloses a photovoltaic tracking bracket, including a drive mechanism, a main shaft, and a bearing assembly. The main shaft is adapted to pass through the bearing assembly, and the drive mechanism drives the main shaft to rotate. The bearing assembly is used for mounting the main shaft on the photovoltaic tracking bracket. The bearing assembly includes a first bearing seat 1, a second bearing seat 2, and a bearing 3. The first bearing seat 1 and the second bearing seat 2 are connected and enclose to form a through hole 10. The bearing 3 is adapted to be disposed within the through hole 10, and the inner side of the bearing 3 forms a space for the main shaft to pass through.

[0033] Please see Figure 1 and Figure 2 As shown, the first bearing housing 1 includes a bearing base 11 and a first bearing outer ring 12, which are non-detachably fixedly connected. The second bearing housing 2 includes a bearing cover 21 and a second bearing outer ring 22, which are non-detachably fixedly connected. The first bearing outer ring 12 and the second bearing outer ring 22 together form a through hole 10. This configuration reduces the friction between the bearing housing and the bearing 3, improves the service life of the bearing 3, and ensures the tracking accuracy of the bearing 3 on the photovoltaic tracking bracket. Furthermore, the first bearing outer ring 12 and the bearing base 11, and the second bearing outer ring 22 and the bearing cover 21 can be pre-assembled, reducing on-site installation procedures and improving installation efficiency.

[0034] In this embodiment, the bearing base 11 and bearing cover 21 are formed by pressure molding, specifically by extruding aluminum. The first bearing outer ring 12 is injection molded onto the bearing base 11, and the second bearing outer ring 22 is injection molded onto the bearing cover 21. This integrated molding process reduces on-site installation steps and improves installation efficiency. Furthermore, the outer bearing base 11 and bearing cover 21 are made of high-strength metal, while the inner bearing outer rings 12 and 22 are made of plastic. This adds a plastic friction layer between the bearing housing and the bearing 3, reducing friction and reducing weight. Preferably, the first bearing outer ring 12 and the second bearing outer ring 22 are made of self-lubricating, wear-resistant polymer material.

[0035] Please see Figure 4 and Figure 5 As shown, the inner surfaces of the bearing base 11 and the bearing cover 21 are respectively provided with a first limiting portion 111 and a second limiting portion 211. The first bearing outer ring 12 is provided with a first mating portion 121 corresponding to the first limiting portion 111, and the second bearing outer ring 22 is provided with a second mating portion 221 corresponding to the second limiting portion 211. Specifically, in this embodiment, the first limiting portion 111 and the second limiting portion 211 are groove-shaped, and the first mating portion 121 and the second mating portion 221 are protruding. Since the first bearing outer ring 12 and the second bearing outer ring 22 are respectively injection molded on the bearing base 11 and the bearing cover 21, the first mating portion 121 and the second mating portion 221 are naturally formed during the injection molding process. The first mating part 121 engages with the first limiting part 111, and the second mating part 221 engages with the second limiting part 211. The cross-sections of the groove-shaped first limiting part 111 and the second limiting part 211 are trapezoidal, and the cross-sections of the protruding first mating part 121 and the second mating part 221 are also trapezoidal. This design prevents the injection-molded parts (first bearing outer ring 12, second bearing outer ring 22) from separating from the base parts (bearing base 11, bearing cover 21) during injection molding, which would cause the bearing 3 to not rotate. This ensures a firm and stable connection between the bearing base 11 and the first bearing outer ring 12, bearing cover 21, and second bearing outer ring 22, while also preventing circumferential movement of the injection-molded first bearing outer ring 12 and second bearing outer ring 22, thus restricting their degrees of freedom.

[0036] Please see Figure 5 and Figure 6 As shown, the outer surfaces of the bearing base 11 and the bearing cover 21 are respectively provided with a first reinforcing part 116 and a second reinforcing part 216. The first reinforcing part 116 protrudes from the first limiting part 111, and the second reinforcing part 216 protrudes from the second limiting part 211 to compensate for the lack of strength at the groove-shaped first limiting part 111 and the second limiting part 211 of the bearing base 11 and the bearing cover 21.

[0037] In other embodiments, the first limiting part 111 and the second limiting part 211 are protruding, and the first mating part 121 and the second mating part 221 are recessed. In this embodiment, the first limiting part 111 and the second limiting part 211 are recessed, and the first mating part 121 and the second mating part 221 are protruding, which results in a relatively lower weight. Since the bearing base 11 and the bearing cover 21 are the main components that need to ensure the overall strength of the bearing assembly, they are made of metal, while the first bearing outer ring 12 and the second bearing outer ring 22 are made of plastic. Furthermore, the first limiting part 111 and the second limiting part 211 are configured as trapezoidal grooves, and the width of the grooves gradually increases from the opening to the bottom. With this configuration, the protruding first mating part 121 and the second mating part 221 completely fill the first limiting part 111 and the second limiting part 211, thus locking the first mating part 121 with the first limiting part 111 and the second mating part 221 with the second limiting part 211, ensuring a tight connection between the first bearing outer ring 12 and the bearing base 11, and between the second bearing outer ring 22 and the bearing cover 21 during injection molding. Of course, this application does not limit the specific shapes of the first limiting part 111 and the second limiting part 211, or the first mating part 121 and the second mating part 221.

[0038] Please see Figure 3 and Figure 4 As shown, the first bearing outer ring 12 and the second bearing outer ring 22 each have two first protruding walls 122 and two second protruding walls 222. The two first protruding walls 122 respectively fit against the axial sides of the bearing base 11, and the two second protruding walls 222 respectively fit against the axial sides of the bearing cover 21. This arrangement restricts the axial displacement of the first bearing outer ring 12 within the bearing base 11 and the second bearing outer ring 22 within the bearing cover 21, preventing the first bearing outer ring 12 and the second bearing outer ring 22 from falling off.

[0039] Please see Figure 3 , Figure 5 and Figure 7 As shown, one end of the first bearing housing 1 is rotatably connected to one end of the second bearing housing 2 via a rotating pin 4, and the other end of the first bearing housing 1 is detachably fixedly connected to the other end of the second bearing housing 2 via a connecting assembly 5. This configuration allows for pre-installation of the first bearing housing 1 and the second bearing housing 2, thereby further reducing installation steps and improving installation efficiency.

[0040] Please see Figure 3 , Figure 5 and Figure 6As shown, one end of the bearing base 11 is provided with a first adapter portion 112, and the first adapter portion 112 is provided with a first hole 1121. One end of the bearing cover 21 is provided with a second adapter portion 212, and the second adapter portion 212 is provided with a second hole 2121. The rotating pin 4 passes through the first hole 1121 and the second hole 2121. With this configuration, the first adapter portion 112 and the second adapter portion 212 are rotatably connected, that is, the first bearing seat 1 and the second bearing seat 2 can rotate around the axial direction of the rotating pin 4, so that the side where the first bearing seat 1 and the second bearing seat 2 are connected can be rotatably opened and closed.

[0041] Further, please refer to Figures 5 to 7 As shown, in some embodiments, the first adapter 112 includes two first convex shafts 114 spaced apart along the axial direction of the rotating pin 4. Each first convex shaft 114 has a first hole 1121. The second adapter 212 includes a frustum 214 with a second hole 2121. The rotating pin 4 passes through the two first holes 1121 and the second hole 2121. The frustum 214 is at least partially located between the two first convex shafts 114. Further, the diameters of the first holes 1121 and the second holes 2121 are both adapted to the outer diameter of the rotating pin 4, and the length of the frustum 214 along the axial direction of the rotating pin 4 is equal to the distance between the two first convex shafts 114. That is, the two ends of the frustum 214 along the axial direction of the rotating pin 4 respectively abut against the two first convex shafts 114. This configuration enables a rotatable connection between the bearing base 11 and the bearing cover 21. The convex shafts 114 and / or the frustum 214 can rotate about the axial direction of the rotating pin 4 without axial displacement between them.

[0042] Please see Figure 3 , Figures 5 to 7 As shown, the other end of the bearing base 11 is provided with a first fixing part 113, which has a third hole 1131. The other end of the bearing cover 21 is provided with a second fixing part 213, which has a fourth hole 2131. The connecting assembly 5 includes a pin 51, a hinge bolt 52, and a nut 53. The pin passes through one of the third hole 1131 and the fourth hole 2131, and the hinge bolt 52 passes through the other of the third hole 1131 and the fourth hole 2131, and is locked and fixed by the nut 53. With this configuration, the bearing base 11 and the bearing cover 21 are rotatably connected at one end, and the other end is locked and fixed to complete the installation, which is simple and quick.

[0043] Further, please refer to Figures 5 to 7As shown, in some embodiments, the first fixing part 113 includes a horizontally arranged extension plate 115, the extension plate 115 having a third hole 1131, and the second fixing part 213 includes two second cams 215 spaced apart along the axial direction of the pin 51, the second cams 215 having a fourth hole 2131. The pin 51 passes through the fourth holes 2131 of the two second cams 215 and a hinge bolt 52, the hinge bolt 52 being located between the two second cams 215, the hinge bolt 52 corresponding vertically to the third hole 1131, the hinge bolt 52 passing through the third hole 1131, and the nut 53 locking and fixing the hinge bolt 52 in the third hole 1131 on the side away from the bearing cover 21. Furthermore, the diameters of the fourth hole 2131 and the hinge bolt 52 are both adapted to the outer diameter of the pin 51, and the hinge bolt 52 is located between the two second cams 215. The two ends of the hinge bolt 52 along the axial direction of the pin 51 respectively abut against the two second cams 215, and the outer diameter of the hinge bolt 52 is adapted to the diameter of the third hole 1131. With this configuration, the bearing base 11 and the bearing cover 21 are fixedly connected. After the spindle is placed inside the bearing assembly, the first fixed part 113 and the second fixed part 213 are locked and fixed by the connecting component 5 to complete the relative installation of the bearing assembly and the spindle, and the hinge bolt 52 will not be displaced axially on the pin 51.

[0044] Please see Figure 3 , Figure 5 and Figure 7 As shown, the axial direction of the rotating pin 4 is parallel to the axial direction of the pin 51, and also parallel to the axial direction of the through hole 10. With this arrangement, one end of the first bearing seat 1 and the second bearing seat 2 can rotate around the axial direction of the rotating pin 4 to open or close relative to each other, and the other ends of the first bearing seat 1 and the second bearing seat 2 can be fixedly connected vertically to restrict their continued rotation.

[0045] Please see Figure 3 and Figure 4 As shown, the first bearing outer ring 12 has a first hollowed-out groove 123; or, the second bearing outer ring 22 has a second hollowed-out groove 223; or, the first bearing outer ring 12 has a first hollowed-out groove 123 and the second bearing outer ring 22 has a second hollowed-out groove 223. This arrangement reduces the weight of the first bearing outer ring 12 and / or the second bearing outer ring 22, thereby reducing the overall weight of the bearing assembly, further facilitating installation and disassembly. It also reduces the contact area between the bearing 3 and the first bearing outer ring 12 and / or the second bearing outer ring 22, thereby further reducing friction.

[0046] Please see Figure 1 , Figure 2 and Figure 8As shown, bearing 3 includes a first split bearing 31 and a second split bearing 32, which are inserted vertically. Specifically, one of the first split bearing 31 and the second split bearing 32 is provided with an insert block, and the other is provided with a slot that mates with the insert block. The insert block can be inserted into the slot. With this configuration, the first split bearing 31 and the second split bearing 32 are connected by an insert method, which limits their positioning and improves the overall strength of bearing 3 and the connection stability of the two split bearings.

[0047] Please see Figure 2 , Figure 3 and Figure 8 As shown, in this embodiment, the inner surfaces of the first bearing outer ring 12 and the second bearing outer ring 22 are formed as concave spherical surfaces, and the outer surface of the bearing 3 is formed as convex spherical surfaces, that is, a spherical bearing is used to further adapt to the terrain and installation errors.

[0048] Please see Figure 1 and Figure 8 As shown, the first split bearing 31 is provided with a third hollow groove 311; or, the second split bearing 32 is provided with a fourth hollow groove 321; or, the first split bearing 31 is provided with a third hollow groove 311 and the second split bearing 32 is provided with a fourth hollow groove 321. This arrangement reduces the weight of the bearing 3, thereby reducing the overall weight of the bearing assembly, further facilitating installation and disassembly, and also reducing the contact area between the bearing 3 and the spindle, thus further reducing friction.

[0049] In this embodiment, the bearing assembly can be pre-assembled with the first bearing housing 1 and the second bearing housing 2, and then rotatably connected by the rotating pin 4. At the project site, it is only necessary to fix the first bearing housing 1 to the column, rotate to open the first bearing housing 1 and the second bearing housing 2, put the bearing 3 together, and finally rotate the second bearing housing 2 relative to the first bearing housing 1 to close it. The overall installation is completed by locking and fixing it with the connecting component 5.

[0050] In summary, compared with the prior art, the bearing assembly and photovoltaic tracking bracket of this utility model have the following advantages: by setting a non-removable first bearing outer ring 12 on the bearing base 11 and a non-removable second bearing outer ring 22 on the bearing cover 21, the friction between the bearing 3 and the bearing seat is reduced, the service life of the bearing 3 is improved, and the tracking accuracy of the bearing 3 is guaranteed; and the first bearing outer ring 12 and the second bearing outer ring 22 are respectively pre-fixed to the bearing base 11 and the bearing cover 21, which can reduce the on-site installation procedures and improve the installation efficiency.

[0051] The above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. The understanding of this specification should be based on those skilled in the art. Although the present utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still make modifications or equivalent substitutions to the present utility model. All technical solutions and improvements that do not depart from the spirit and scope of the present utility model should be covered within the scope of the claims of the present utility model.

Claims

1. A bearing assembly characterized by, include: The first bearing housing (1) includes a bearing base (11) and a first bearing outer ring (12), wherein the bearing base (11) and the first bearing outer ring (12) are fixedly connected in a non-detachable manner. The second bearing housing (2) is connected to the first bearing housing (1). The second bearing housing (2) includes a bearing cover (21) and a second bearing outer ring (22). The bearing cover (21) and the second bearing outer ring (22) are fixedly connected in a non-detachable manner. The first bearing outer ring (12) and the second bearing outer ring (22) enclose to form a through hole (10). The bearing (3) is adapted to be installed in the through hole (10).

2. The bearing assembly of claim 1, wherein: The bearing base (11) and the bearing cover (21) are respectively formed by pressure molding. The first bearing outer ring (12) is injection molded on the bearing base (11), and the second bearing outer ring (22) is injection molded on the bearing cover (21).

3. The bearing assembly of claim 2, wherein: The inner surfaces of the bearing base (11) and the bearing cover (21) are respectively provided with a first limiting part (111) and a second limiting part (211). The first bearing outer ring (12) is provided with a first mating part (121) corresponding to the first limiting part (111), and the second bearing outer ring (22) is provided with a second mating part (221) corresponding to the second limiting part (211).

4. The bearing assembly according to claim 3, characterized in that: The outer surfaces of the bearing base (11) and the bearing cover (21) are respectively provided with a first reinforcing part (116) and a second reinforcing part (216), the first reinforcing part (116) corresponds to the first limiting part (111), and the second reinforcing part (216) corresponds to the second limiting part (211).

5. The bearing assembly according to claim 2, characterized in that: The first bearing outer ring (12) and the second bearing outer ring (22) have two first convex walls (122) and two second convex walls (222), respectively. The two first convex walls (122) are respectively attached to the axial sides of the bearing base (11), and the two second convex walls (222) are respectively attached to the axial sides of the bearing cover (21).

6. The bearing assembly according to claim 1, characterized in that: One end of the first bearing housing (1) is rotatably connected to one end of the second bearing housing (2) by a rotating pin (4), and the other end of the first bearing housing (1) is detachably fixedly connected to the other end of the second bearing housing (2) by a connecting assembly (5).

7. The bearing assembly according to claim 6, characterized in that: One end of the bearing base (11) is provided with a first adapter (112), the first adapter (112) is provided with a first hole (1121), one end of the bearing cover (21) is provided with a second adapter (212), the second adapter (212) is provided with a second hole (2121), the rotating pin (4) passes through the first hole (1121) and the second hole (2121), and the first bearing seat (1) and the second bearing seat (2) can rotate around the axial direction of the rotating pin (4).

8. The bearing assembly according to claim 7, characterized in that: The bearing base (11) has a first fixed part (113) at one end, and the first fixed part (113) has a third hole (1131). The bearing cover (21) has a second fixed part (213) at one end, and the second fixed part (213) has a fourth hole (2131). The connecting assembly (5) includes a pin (51), a hinge bolt (52) and a nut (53). The pin (51) passes through one of the third hole (1131) and the fourth hole (2131) and the hinge bolt (52). The hinge bolt (52) passes through the other of the third hole (1131) and the fourth hole (2131) and is locked and fixed by the nut (53).

9. The bearing assembly according to any one of claims 1-8, characterized in that: The inner surfaces of the first bearing outer ring (12) and the second bearing outer ring (22) are formed as concave spherical surfaces, and the outer surface of the bearing (3) is formed as convex spherical surfaces.

10. A photovoltaic tracking bracket, characterized in that: It includes a drive mechanism, a spindle, and a bearing assembly as described in any one of claims 1 to 9, wherein the spindle passes through the bearing assembly, and the drive mechanism drives the spindle to rotate.

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