Bearing assembly, photovoltaic support and photovoltaic system

Abstract

The utility model discloses a bearing assembly, a photovoltaic support and a photovoltaic system, and belongs to the technical field of photovoltaics. The bearing assembly is applied to the photovoltaic support and comprises a bearing seat, at least two limiting pieces and a bearing, and the bearing seat is provided with at least two first limiting parts; second limiting parts are formed by the limiting pieces, and the second limiting parts and the first limiting parts are in one-to-one correspondence and are in limiting fit in the radial direction of the bearing seat; the bearing is pivotally mounted on the bearing seat and used for mounting a main shaft of the photovoltaic support, the bearing comprises at least two bearing sections which are sequentially distributed in the circumferential direction of the bearing seat, and the bearing sections and the limiting pieces are in one-to-one correspondence and are in sliding fit in the circumferential direction. According to the utility model, the rotation of each bearing section relative to the bearing seat is realized, the radial and axial limiting of each bearing section relative to the bearing seat is ensured, and the risks of loosening, position deviation or falling off of the bearing are reduced, so that the stability and reliability of the photovoltaic bracket are improved, the long-term stable operation of a photovoltaic system is further maintained, the mounting process is simplified, and the production efficiency is improved. The mounting efficiency is improved.

Description

Technical Field

[0001] This application belongs to the field of photovoltaic technology, and in particular relates to a bearing assembly, a photovoltaic bracket and a photovoltaic system. Background Technology

[0002] In existing photovoltaic (PV) mounting systems, to enable PV modules to track changes in the sun's position, bearing assemblies are often installed at the junction of the column and the main shaft to ensure the main shaft's normal rotation, thereby driving the PV modules to rotate normally and maximizing solar energy collection efficiency. However, as the main shaft of the PV mounting system rotates, the bearings in the bearing assembly rotate axially relative to their bearing seats. Under long-term operation, the bearings are prone to loosening or displacement, and in severe cases, the bearings may even detach directly from their bearing seats. This leads to decreased stability of the PV mounting system, potentially damaging the PV modules and ultimately affecting the overall performance of the PV system. Utility Model Content

[0003] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a bearing assembly, a photovoltaic support, and a photovoltaic system, which realizes the positional restriction of the bearing along the axial and radial directions, thereby improving the stability and reliability of the photovoltaic support.

[0004] In a first aspect, this application provides a bearing assembly for use in photovoltaic brackets, the bearing assembly comprising:

[0005] The bearing housing is provided with at least two first limiting parts;

[0006] At least two limiting members, the limiting members forming a second limiting part, the second limiting part and the first limiting part corresponding one to one and limitingly engaging along the radial direction of the bearing seat;

[0007] The bearing is pivotally mounted on the bearing housing and is used to mount the main shaft of the photovoltaic bracket. The bearing includes at least two bearing segments distributed sequentially along the circumference of the bearing housing. The bearing segments and the limiting members correspond one-to-one and slide together along the circumference.

[0008] According to the bearing assembly of this application, to facilitate the assembly between the bearing, the limiting components, and the main shaft, the bearing can be circumferentially divided into at least two bearing segments, which also distributes the load and improves the service life and reliability of the bearing. Furthermore, each bearing segment slides circumferentially with its corresponding limiting component, and each limiting component slides circumferentially with its bearing housing. This allows each bearing segment to rotate relative to its bearing housing while ensuring radial and axial positioning of each bearing segment relative to the bearing housing, reducing the risk of bearing loosening, misalignment, or detachment. This improves the stability and reliability of the photovoltaic support, thereby maintaining the long-term stable operation of the photovoltaic system, simplifying the installation process, and increasing installation efficiency.

[0009] According to one embodiment of this application, one of the first limiting portion and the second limiting portion includes a limiting groove, and the other of the first limiting portion and the second limiting portion includes a limiting protrusion, wherein the limiting protrusion and the limiting groove are engaged.

[0010] According to one embodiment of this application, the bearing segment forms a first groove that extends through the bearing segment along the circumference of the bearing housing, and the limiting member partially slides in cooperation with the inner wall of the first groove.

[0011] According to one embodiment of this application, the bearing segment includes:

[0012] The main body is used to be sleeved on the outside of the main shaft;

[0013] Two first extensions are axially spaced along the bearing housing, the first extensions protruding from the outer wall of the main body, and the inner wall of the first groove includes the side of the two first extensions that are close to each other and at least a portion of the outer wall of the main body.

[0014] According to one embodiment of this application, along the axial direction, the end face of the first extension and the end face of the main body form a continuous plane.

[0015] According to one embodiment of this application, the bearing segment further includes:

[0016] Two spaced-apart second extensions are provided, each corresponding to and connected to the first extension. The second extensions are spaced apart from the outer sidewall of the main body. The limiting member is located at least partially between the second extensions and the main body.

[0017] According to one embodiment of this application, the limiting member includes:

[0018] The first segment forms the second limiting part;

[0019] Two second segments are respectively disposed at both ends of the first segment along the axial direction, and the second segments are at least partially located between the second extension and the main body.

[0020] According to one embodiment of this application, the outer diameter of the first segment is D1, the outer diameter of the second segment is D2, and the outer diameter of the second extension is D3, satisfying the following conditions:

[0021] D3≥D1>D2.

[0022] Secondly, this application provides a photovoltaic support bracket, which includes:

[0023] The bearing assembly as described above;

[0024] A spindle, which is mounted on the bearing of the bearing assembly and rotates in conjunction with the bearing housing of the bearing assembly;

[0025] The column, on which the bearing housing of the bearing assembly is mounted.

[0026] The photovoltaic bracket according to this application enables each bearing segment to rotate relative to the bearing seat while ensuring that each bearing segment is limited in the radial and axial directions relative to the bearing seat. This reduces the risk of bearing loosening, positional displacement, or detachment, improves the stability and reliability of the photovoltaic bracket, thereby maintaining the long-term stable operation of the photovoltaic system. It also simplifies the installation process and improves installation efficiency.

[0027] Thirdly, this application provides a photovoltaic system, which includes:

[0028] The photovoltaic support structure as described above;

[0029] A photovoltaic module, which is mounted on the main shaft of the photovoltaic bracket.

[0030] According to the photovoltaic system of this application, by setting the photovoltaic bracket as described above, each bearing segment can rotate relative to the bearing seat while ensuring that each bearing segment is limited in the radial and axial directions relative to the bearing seat, reducing the risk of bearing loosening, positional displacement or falling off, improving the stability and reliability of the photovoltaic bracket, thereby maintaining the long-term stable operation of the photovoltaic system, and also simplifying the installation process and improving installation efficiency.

[0031] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0032] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0033] Figure 1 This is a schematic diagram of the structure of the photovoltaic system provided in the embodiments of this application;

[0034] Figure 2 This is a partial schematic diagram of the photovoltaic support provided in an embodiment of this application;

[0035] Figure 3 This is a schematic diagram of the bearing housing provided in an embodiment of this application;

[0036] Figure 4 This is a schematic diagram of the structure of the bearing section and the limiting member in the embodiment of this application;

[0037] Figure 5 This is a schematic diagram of the bearing section provided in an embodiment of this application;

[0038] Figure 6 This is a schematic diagram of the structure of the limiting member provided in the embodiment of this application.

[0039] Figure label:

[0040] 100. Bearing assembly;

[0041] 110. Bearing housing; 111. First limiting part;

[0042] 120. Limiting components;

[0043] 121. First section; 1211. Second limiting part;

[0044] 122. The second paragraph;

[0045] 130, Bearing section; 1301, First groove;

[0046] 131. Main body; 132. First extension; 133. Second extension;

[0047] 200. Photovoltaic support frame; 210. Main shaft; 220. Column;

[0048] 300. Photovoltaic modules. Detailed Implementation

[0049] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0050] The following is for reference. Figures 1-6The bearing assembly 100 provided in this application embodiment is applied to a photovoltaic bracket 200. The bearing assembly 100 includes a bearing housing 110, at least two limiting members 120, and a bearing.

[0051] The bearing housing 110 is provided with at least two first limiting portions 111. The limiting member 120 forms a second limiting portion 1211, and the second limiting portion 1211 corresponds to the first limiting portion 111 and is radially limited and engaged with the bearing housing 110.

[0052] It should be noted that the bearing housing 110 can be used to support and mount the bearing and the limiting member 120, and to provide rotational space for the bearing. Exemplarily, the bearing housing 110 may have a cylindrical or conical inner hole for mating with the outer ring of the bearing and the limiting member 120; the outer contour of the bearing housing 110 may be square, circular, or other shapes; the outer contour of the limiting member 120 may be arc-shaped, wavy, or bent, etc., to adapt to different installation requirements. The materials of the bearing housing 110 and the limiting member 120 may include, but are not limited to, plastic, cast iron, stainless steel, or aluminum alloy, etc., and this embodiment does not impose specific limitations in this regard.

[0053] It is understood that the first limiting part 111 on the bearing housing 110 and the second limiting part 1211 on the limiting member 120 provide radial limiting cooperation, and in conjunction with the relatively fixed installation position of the bearing housing 110 and the column 220 of the photovoltaic bracket 200, thereby restricting the radial and axial movement of the bearing. It should be noted that the number and specific distribution of the first limiting part 111 and the second limiting part 1211 can be designed according to actual needs, and this embodiment does not impose specific limitations in this regard.

[0054] The bearing is pivotally mounted on the bearing housing 110 and is used to mount the main shaft 210 of the photovoltaic bracket 200. The bearing includes at least two bearing segments 130 that are sequentially distributed along the circumference of the bearing housing 110. The bearing segments 130 and the limiting members 120 correspond to each other and slide together along the circumference.

[0055] It should be noted that the bearing can be used to support the main shaft 210 of the photovoltaic bracket 200 and allow the main shaft 210 to rotate freely on a fixed axis. The bearing material includes, but is not limited to, metal or plastic materials. Metal materials may include, but are not limited to, high-carbon chromium bearing steel, stainless steel, cast iron, or aluminum-based alloys. Plastic materials may include, but are not limited to, acetal, polyetheretherketone, polyoxymethylene, polytetrafluoroethylene, or phenolic resin. For example, the bearing may have a cylindrical or conical inner bore for mating with the outer ring of the main shaft 210; the outer contour of the bearing includes, but is not limited to, a circle or other shapes.

[0056] Understandably, to facilitate the assembly of the bearing with the limiting member 120 and the main shaft 210, the bearing can be divided into at least two bearing segments 130 circumferentially. This also distributes the load and improves the bearing's service life and reliability. Furthermore, each bearing segment 130 slides circumferentially with its corresponding limiting member 120, and each limiting member 120 slides circumferentially with its bearing housing 110. This ensures that while each bearing segment 130 rotates relative to the bearing housing 110, it also limits the radial and axial positioning of each bearing segment 130 relative to the bearing housing 110. This reduces the risk of bearing loosening, misalignment, or detachment, thereby improving the stability and reliability of the photovoltaic bracket 200, maintaining the long-term stable operation of the photovoltaic system, simplifying the installation process, and improving installation efficiency.

[0057] For example, in this embodiment, such as Figure 2 As shown, there are two bearing sections 130. The bearing sections 130 are generally semi-cylindrical. The two bearing sections 130 can be spliced ​​end to end to form a circumferentially closed bearing, or they can be spaced apart to form a split bearing, so as to reduce manufacturing costs while adapting to spindles 210 with different outer diameters.

[0058] According to the bearing assembly 100 provided in the embodiments of this application, while realizing the rotation of each bearing segment 130 relative to the bearing seat 110, the bearing segment 130 relative to the bearing seat 110 is limited in the radial and axial directions, reducing the risk of bearing loosening, position displacement or falling off, thereby improving the stability and reliability of the photovoltaic bracket 200, and thus maintaining the long-term stable operation of the photovoltaic system, and also simplifying the installation process and improving the installation efficiency.

[0059] In some embodiments, such as Figures 2 to 6 As shown, one of the first limiting part 111 and the second limiting part 1211 includes a limiting groove, and the other of the first limiting part 111 and the second limiting part 1211 includes a limiting protrusion. The limiting protrusion and the limiting groove are engaged. The shape of the limiting groove includes, but is not limited to, a rectangle. It should be noted that the shape and size of the limiting protrusion and the limiting groove can be designed according to actual needs, and this embodiment does not impose specific limitations on them.

[0060] Understandably, the combination of the limiting groove and the limiting protrusion can effectively reduce the shaking or offset of the bearing during rotation, and also facilitate manufacturing and assembly.

[0061] In this embodiment, as Figures 2 to 6As shown, the limiting groove penetrates the bearing housing 110 radially, and the limiting protrusion protrudes radially from the outer side wall of the limiting member 120. During installation, the limiting member 120 and bearing section 130, which are assembled together, are first placed inside the bearing housing 110 and moved radially until the limiting protrusion and the limiting groove engage. Of course, in other embodiments, the limiting groove may be located on the limiting member 120, and the limiting protrusion on the bearing housing 110; this embodiment does not impose specific limitations on this.

[0062] In some embodiments, such as Figures 2 to 6 As shown, multiple second limiting portions 1211 distributed circumferentially on each limiting member 120 can also be provided to improve the radial limiting strength between the bearing section 130 and the bearing seat 110. It should be noted that the number and distribution of the second limiting portions 1211 are designed according to actual needs, and this embodiment does not impose specific limitations on this.

[0063] In some embodiments, such as Figure 2 As shown, two bearing segments 130 are provided, and the two bearing segments 130 are distributed vertically spaced apart. Of course, in other embodiments, the two bearing segments 130 may also be distributed horizontally spaced apart, and this embodiment does not impose a specific limitation on this.

[0064] In some embodiments, such as Figure 4 and Figure 5 As shown, the bearing section 130 forms a first groove 1301, which extends through the bearing section 130 along the circumference of the bearing housing 110. The limiting member 120 partially slides with the inner wall of the first groove 1301. It should be noted that the shape and size of the first groove 1301 can be designed according to actual needs, and this embodiment does not impose specific limitations on this.

[0065] Understandably, the first groove 1301 extends circumferentially through the bearing section 130, and the opening of the first groove 1301 is located on the outer wall of the bearing section 130. This allows the bearing section 130 to slide relative to the limiting member 120 in the circumferential direction after the limiting member 120 and the bearing seat 110 are assembled together. This adapts to the movement requirements of the spindle 210 while reducing the possibility of radial wobbling or displacement of the bearing section 130. In addition, since the first groove 1301 extends circumferentially through the bearing section 130, it also facilitates the limiting member 120 to slide into or out of the bearing section 130 from both ends of the bearing section 130 in the circumferential direction, which is convenient for installation and maintenance.

[0066] In some embodiments, such as Figure 4 and Figure 5As shown, the bearing section 130 includes a main body 131 and two first extensions 132. The main body 131 is used to be sleeved on the outside of the main shaft 210. The two first extensions 132 are arranged axially at intervals along the bearing seat 110. The first extensions 132 protrude from the outer side wall of the main body 131. The inner wall of the first groove 1301 includes the side of the two first extensions 132 that are close to each other and at least part of the outer side wall of the main body 131.

[0067] It is understood that the first extension 132 is provided on the outer wall of the main body 131 and extends radially away from the main shaft 210, that is, the first extension 132 is fan-shaped. That is, the two first extensions 132 are arranged at intervals to form two opposing inner sidewalls of the first groove 1301, thereby axially limiting the limiting member 120 and reducing vibration and shaking during bearing operation.

[0068] In some embodiments, such as Figure 4 and Figure 5 As shown, along the axial direction, the end face of the first extension 132 and the end face of the main body 131 form a continuous plane.

[0069] It is understood that the end face of the first extension 132 and the end face of the main body 131 form a continuous plane, that is, the first extension 132 protrudes from the end of the outer side wall of the main body 131 and is connected to the end face of the main body 131. This can ensure that the entire bearing section 130 has better structural stability in the axial direction, reduce stress concentration, thereby improving the strength and reliability of the bearing section 130 and facilitating assembly and processing.

[0070] In some embodiments, such as Figure 4 and Figure 5 As shown, the bearing section 130 also includes two spaced-apart second extensions 133, which correspond one-to-one with and are connected to the first extensions 132. The second extensions 133 and the outer sidewalls of the main body 131 are spaced apart, and the limiting member 120 is located at least partially between the second extensions 133 and the main body 131.

[0071] It is understood that the second extension 133 and the first extension 132 are connected at an angle, thereby separating the outer sidewalls of the second extension 133 and the main body 131 radially to block the groove opening of the first groove 1301. That is, one end face of the limiting member 120 in the radial direction contacts the outer sidewall of the main body 131, and the other end face close to the end face of the limiting member 120 in the axial direction contacts the second extension 133, so as to further improve the radial limiting and circumferential guiding effect.

[0072] In some embodiments, such as Figure 4 and Figure 6As shown, the limiting member 120 includes a first segment 121 and two second segments 122. The first segment 121 forms a second limiting portion 1211. The second segments 122 are respectively disposed at both ends of the first segment 121 along the axial direction, and the second segments 122 are at least partially located between the second extension portion 133 and the main body portion 131.

[0073] Understandably, the first segment 121 is located between the two second extensions 133 so that the limiting protrusion can at least partially extend through the opening of the first groove 1301 until it engages with the limiting groove. The side of the second segment 122 away from the first segment 121 can slide in contact with the first extension 132. The two sides of the second segment 122 slide in contact with the second extension 133 and the main body 131 on the radial sides respectively. This not only guides the movement of the bearing segment 130 more accurately and improves the movement accuracy of the entire bearing assembly 100, but also allows it to be better embedded in the bearing segment 130, making the structure of the entire bearing assembly 100 more compact.

[0074] In some embodiments, such as Figure 4 As shown, the outer diameter of the first segment 121 is D1, the outer diameter of the second segment 122 is D2, and the outer diameter of the second extension 133 is D3, satisfying the following conditions:

[0075] D3 ≥ D1 > D2. It should be noted that the outer diameters of D1, D2, and D3 can be designed according to actual needs, and this embodiment does not impose specific restrictions on them.

[0076] Understandably, by using the relationship D3≥D1, the first segment 121 and the bearing housing 110 are ensured to be in a limiting fit, while the risk of interference with the rotation of the second extension 133 relative to the bearing housing 110 is reduced, thus extending the service life of the bearing assembly 100. D1>D2 also allows the two ends of the first segment 121 and the end faces of the second limiting part 1211 to slide fit close to each other, enhancing the axial limiting of the bearing segment 130 and improving the structural stability of the entire bearing assembly 100.

[0077] This application also discloses a photovoltaic bracket 200.

[0078] In some embodiments, such as Figure 1 and Figure 2 As shown, the photovoltaic support 200 includes a main shaft 210, a column 220, and the aforementioned bearing assembly 100.

[0079] The spindle 210 is mounted on the bearing of the bearing assembly 100, and the spindle 210 is rotatably engaged with the bearing housing 110 of the bearing assembly 100; the bearing housing 110 of the bearing assembly 100 is mounted on the column 220.

[0080] It should be noted that the photovoltaic bracket 200 of this application is a rigid photovoltaic bracket 200 with tracking function. The application scenarios of the photovoltaic bracket 200 include, but are not limited to, residential homes, commercial buildings, industrial facilities or agricultural greenhouses, etc., and are not limited here.

[0081] The photovoltaic bracket 200 provided in this application embodiment enables each bearing segment 130 to rotate relative to the bearing seat 110 while ensuring that each bearing segment 130 is limited in the radial and axial directions relative to the bearing seat 110. This reduces the risk of bearing loosening, positional displacement, or detachment, improves the stability and reliability of the photovoltaic bracket 200, thereby maintaining the long-term stable operation of the photovoltaic system. It also simplifies the installation process and improves installation efficiency.

[0082] In some embodiments, such as Figure 1 and Figure 2 As shown, multiple bearing assemblies 100 are provided, and the multiple bearing assemblies 100 are distributed at intervals along the axial direction of the main shaft 210 to enhance the overall stability of the photovoltaic bracket 200.

[0083] This application also discloses a photovoltaic system.

[0084] In some embodiments, such as Figure 1 As shown, the photovoltaic system includes a photovoltaic module 300 and a photovoltaic support 200 as described above, with the photovoltaic module 300 mounted on the main shaft 210 of the photovoltaic support 200.

[0085] The photovoltaic system provided in this application embodiment, through the setting of the photovoltaic bracket 200, enables each bearing segment 130 to rotate relative to the bearing seat 110 while ensuring that each bearing segment 130 is limited in the radial and axial directions relative to the bearing seat 110, reducing the risk of bearing loosening, position displacement or falling off, improving the stability and reliability of the photovoltaic bracket 200, thereby maintaining the long-term stable operation of the photovoltaic system, and also simplifying the installation process and improving installation efficiency.

[0086] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0087] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, 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.

[0088] In the description of this application, "first feature" and "second feature" may include one or more of the features.

[0089] In the description of this application, "multiple" means two or more.

[0090] In the description of this application, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact through another feature between them.

[0091] In the description of this application, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0092] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0093] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A bearing assembly used in photovoltaic brackets, characterized in that, The application relates to a bearing assembly for a photovoltaic support. The bearing assembly comprises: a bearing seat provided with at least two first limiting portions; at least two limiting members forming second limiting portions corresponding to the first limiting portions and being in radial limiting cooperation with the bearing seat; 2. The bearing assembly of claim 1, wherein, a bearing pivotally mounted on the bearing seat and used for mounting a main shaft of the photovoltaic support, the bearing comprising at least two bearing segments sequentially distributed along a circumference of the bearing seat, the bearing segments corresponding to the limiting members and being in sliding cooperation along the circumference.

3. A bearing assembly according to claim 1 or 2, wherein, One of the first limiting portions and the second limiting portions comprises a limiting groove, and the other of the first limiting portions and the second limiting portions comprises a limiting protrusion, the limiting protrusion and the limiting groove being in clamping cooperation.

4. The bearing assembly of claim 3, wherein, The bearing segment forms a first groove penetrating through the bearing segment along the circumference of the bearing seat, and the limiting member is at least partially in sliding cooperation with an inner wall of the first groove. The bearing segment comprises: a main body portion used for sleeving an outer side of the main shaft; 5. The bearing assembly of claim 4, wherein, two first extending portions spaced apart along an axial direction of the bearing seat, the first extending portions being protruded from an outer side wall of the main body portion, and the inner wall of the first groove comprising one side of the two first extending portions close to each other and at least part of the outer side wall of the main body portion.

6. The bearing assembly of claim 4, wherein, Along the axial direction, an end surface of the first extending portion and an end surface of the main body portion form a continuous plane. The bearing segment further comprises:

7. The bearing assembly of claim 6, wherein, two second extending portions spaced apart and corresponding to the first extending portions, the second extending portions being spaced apart from the outer side wall of the main body portion, and the limiting member being at least partially located between the second extending portions and the main body portion. The limiting member comprises: a first segment forming the second limiting portion; 8. The bearing assembly of claim 7, wherein, two second segments respectively arranged at two axial ends of the first segment, and the second segments being at least partially located between the second extending portions and the main body portion. An outer diameter of the first segment is D1, an outer diameter of the second segment is D2, and an outer diameter of the second extending portion is D3, and the following conditions are met:

9. A photovoltaic mount, characterized by, D3>=D1>D2. The application further relates to a photovoltaic support comprising the bearing assembly. The application further relates to a photovoltaic assembly mounted on the main shaft of the photovoltaic support. ​ 10. A photovoltaic system characterized by, ​ ​ ​

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