Bearing assembly and photovoltaic tracking support

Abstract

The utility model belongs to the field of photovoltaic tracking supports, and discloses a bearing assembly and a photovoltaic tracking support, the bearing assembly comprises a bearing seat and a bearing, the bearing seat is provided with a bearing installation cavity, and the side wall of the bearing installation cavity is provided with a limiting groove extending along the circumferential direction; the bearing is installed in the bearing installation cavity, a limiting protrusion is arranged on the outer wall of the bearing, and the limiting protrusion extends into the limiting groove and can move along the limiting groove; the two axial end faces of the bearing do not protrude out of the two axial end faces of the bearing seat respectively. According to the utility model, the limiting bulges are axially limited through the limiting grooves, so that the bearing can be prevented from outwards jumping out of the bearing seat along the axial direction, and in the use process, the two axial end surfaces of the bearing cannot protrude out of the two axial end surfaces of the bearing seat respectively, so that wind and sand cannot enter the bearing from the two ends of the bearing, and the service life of the bearing is prolonged. The probability that wind and sand enter the bearing can be effectively reduced, bearing abrasion is reduced, the photovoltaic tracking support can operate stably, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic tracking brackets, in particular to a bearing assembly and a photovoltaic tracking bracket. Background Art

[0002] Bearing assemblies are a critical component of the tracking system, allowing photovoltaic modules to rotate in accordance with the sun's trajectory, maximizing solar energy collection efficiency. The bearing assembly typically consists of a bearing housing and a bearing, which is rotatably connected to the housing. The bearing is provided with a shoulder, located on either side of the housing, to limit axial movement of the bearing relative to the housing. The main shaft is fixedly connected to the bearings, allowing the main shaft to rotate relative to the housing. This allows the photovoltaic module mounted on the main shaft to receive solar energy at an optimal angle, significantly improving the module's power generation efficiency.

[0003] At present, the operating environment of photovoltaic tracking brackets is mostly relatively harsh, with strong wind and sand. The wind and sand will enter the bearings through the shoulders set on the bearings, causing serious bearing wear, which not only affects the service life of the bearing components, but also affects the stable operation of the photovoltaic tracking brackets. Utility Model Content

[0004] The purpose of this application is to provide a bearing assembly and a photovoltaic tracking bracket, which can reduce the chance of wind and sand entering the bearing, thereby reducing bearing wear and increasing the service life of the bearing.

[0005] The technical solutions provided in this application are as follows:

[0006] In one aspect, a bearing assembly is provided, comprising:

[0007] The bearing seat is provided with a bearing installation cavity, and the side wall of the bearing installation cavity is provided with a limiting groove extending in the circumferential direction;

[0008] A bearing is installed in the bearing installation cavity, and a limiting protrusion is provided on the outer wall of the bearing. The limiting protrusion extends into the limiting groove and can move along the limiting groove; the two end surfaces of the bearing along the axial direction do not protrude from the two end surfaces of the bearing seat along the axial direction.

[0009] In some embodiments, the bearing includes a first bearing and a second bearing that are separately provided, and both ends of the first bearing and the second bearing are fastened by fasteners respectively.

[0010] In some embodiments, the limiting groove includes a first limiting groove and a second limiting groove, and the first limiting groove and the second limiting groove are arranged at intervals along the circumference of the bearing mounting cavity.

[0011] In some embodiments, the outer walls of the first bearing and the second bearing are respectively provided with a limiting protrusion, the limiting protrusion on the first bearing extends into the first limiting groove, and the limiting protrusion on the second bearing extends into the second limiting groove.

[0012] In some embodiments, a first limiting protrusion and a second limiting protrusion are respectively provided at two ends of the first bearing along the circumferential direction, the first limiting protrusion extends into the first limiting groove, and the second limiting protrusion extends into the second limiting groove;

[0013] A third limiting protrusion and a fourth limiting protrusion are respectively provided at two ends of the second bearing along the circumferential direction. The third limiting protrusion extends into the second limiting groove, and the fourth limiting protrusion extends into the first limiting groove.

[0014] In some embodiments, the first limiting protrusion, the second limiting protrusion, the third limiting protrusion and the fourth limiting protrusion are arranged in sequence in a counterclockwise direction;

[0015] The distance between the first limiting protrusion and the second limiting protrusion is the same as the distance between the third limiting protrusion and the fourth limiting protrusion;

[0016] An extension length of the first limiting groove is the same as an extension length of the second limiting groove.

[0017] In some embodiments, the first limiting protrusion and the fourth limiting protrusion are arranged opposite to each other and extend into the first limiting groove, and the first limiting groove limits the circumferential and axial displacements of the first limiting protrusion and the fourth limiting protrusion;

[0018] The second limiting protrusion and the third limiting protrusion are arranged opposite to each other and extend into the second limiting groove. The second limiting groove limits the circumferential and axial displacements of the second limiting protrusion and the third limiting protrusion.

[0019] In some embodiments, a first dust hole is provided on the bottom surface of the first limiting groove, and the first dust hole radially penetrates the bearing seat and is located below the bearing;

[0020] A second dust hole is provided on the bottom surface of the second limiting groove. The second dust hole radially penetrates the bearing seat and is located below the bearing.

[0021] In some embodiments, first mounting grooves are respectively provided at both ends of the outer wall of the first bearing;

[0022] Both end surfaces of the first bearing are respectively provided with first mounting holes communicating with the first mounting groove;

[0023] The outer wall of the second bearing is provided with a second mounting groove at both ends;

[0024] Both end surfaces of the second bearing are respectively provided with second mounting holes communicating with the second mounting groove;

[0025] The fastener passes through the first mounting hole and the second mounting hole to fasten the first bearing and the second bearing.

[0026] On the other hand, a photovoltaic tracking bracket is further provided, comprising a main shaft and the bearing assembly described in any one of the above embodiments, wherein the main shaft is arranged in the inner ring of the bearing.

[0027] The technical effect of the present application is that the limiting protrusion is axially limited by the limiting groove, which can prevent the bearing from axially moving out of the bearing seat. During use, the two end surfaces of the bearing along the axial direction will not protrude from the two end surfaces of the bearing seat along the axial direction, so that wind and sand cannot enter the interior of the bearing from both ends of the bearing, which can effectively reduce the chance of wind and sand entering the interior of the bearing, reduce bearing wear, enable the photovoltaic tracking bracket to operate stably, and increase its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present application is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0029] Figure 1 This is a structural diagram of a bearing assembly provided in a specific embodiment of the present application;

[0030] Figure 2 This is a schematic structural diagram of a bearing seat provided in a specific embodiment of the present application from one viewing angle;

[0031] Figure 3 This is a schematic structural diagram of a bearing provided in a specific embodiment of the present application from one viewing angle;

[0032] Figure 4 is a cross-sectional schematic diagram of a bearing assembly provided in a specific embodiment of the present application;

[0033] Figure 5 is a structural schematic diagram of a bearing provided in a specific embodiment of the present application from another perspective;

[0034] Figure 6 This is a schematic structural diagram of the bearing seat provided in a specific embodiment of the present application from another perspective.

[0035] Description of Figure Numbers:

[0036] 100, bearing seat; 110, bearing mounting cavity; 120, limiting groove; 121, first limiting groove; 1211, first side wall; 1212, second side wall; 122, second limiting groove; 131, first dust hole; 132, second dust hole; 140, protrusion;

[0037] 200, bearing; 210, limiting protrusion; 211, first limiting protrusion; 2111, first limiting wall; 2112, third limiting wall; 212, second limiting protrusion; 213, third limiting protrusion; 214, fourth limiting protrusion; 2141, second limiting wall; 2142, fourth limiting wall; 220, first bearing; 221, first mounting groove; 222, first mounting hole; 230, second bearing; 231, second mounting groove; 232, second mounting hole;

[0038] 300. Fasteners. DETAILED DESCRIPTION

[0039] In the following description, specific details such as specific system structures and technologies are provided for illustration rather than limitation to facilitate a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid obstructing the description of the present application with unnecessary details.

[0040] In order to more clearly illustrate the application embodiments or technical solutions in the prior art, the specific implementation methods of the present application will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without inventive efforts.

[0041] To simplify the drawings, only the parts relevant to this application are schematically shown in each figure. They do not represent the actual structure of the product. In addition, to simplify the drawings and facilitate understanding, in some figures, only one of the components with the same structure or function is schematically depicted or labeled. In this document, "one" not only means "only one" but also "more than one."

[0042] It should be further understood that the term "and / or" used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0043] It should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application.

[0044] In the embodiments shown in the drawings, directional indications (such as up, down, left, right, front, and back, etc.) are not absolute but relative when describing the structure and movement of each component, and are not used to limit the direction of the product in actual use.

[0045] In addition, in the description of this application, ordinal numbers, such as "first", "second", etc., are only used to distinguish and describe related objects, and cannot be understood as indicating or implying the relative importance or order between related objects.

[0046] According to the specific embodiments provided in this application, Figures 1 to 4 As shown, a bearing assembly includes a bearing seat 100 and a bearing 200. A bearing mounting cavity 110 is defined within the bearing seat 100 to accommodate the bearing 200. The sidewalls of the bearing mounting cavity 110 are provided with circumferentially extending retaining grooves 120. The bearing seat 100 can be configured as a single piece to reduce molding and installation steps and improve production efficiency.

[0047] The bearing 200 is mounted within the bearing mounting cavity 110. A limiting protrusion 210 is provided on the outer wall of the bearing 200. The limiting protrusion 210 extends into the limiting groove 120 and is capable of moving along the limiting groove 120. When the bearing 200 rotates relative to the bearing seat 100, the limiting protrusion 210 moves within the limiting groove 120 along the extension direction of the limiting groove 120. By designing the extension length of the limiting groove 120, the maximum rotation angle of the bearing 200 relative to the bearing seat 100 can be limited. The main shaft of the photovoltaic tracking bracket is mounted within the bearing 200, which also limits the maximum rotation angle of the main shaft. This prevents the main shaft from continuing to rotate after a rotation failure, thereby damaging the photovoltaic modules mounted on the photovoltaic tracking bracket. The extension length of the limiting groove 120 can be set according to the actual rotation angle required for the main shaft. This embodiment does not limit the specific extension length of the limiting groove 120. The cooperation between the limiting groove 120 and the limiting protrusion 210 can not only limit the rotation angle of the bearing 200, but also limit the bearing 200 in the axial direction to prevent the bearing 200 from axially running out of the bearing seat 100.

[0048] When the bearing 200 is installed in the bearing mounting cavity 110 and the limiting protrusion 210 extends into the limiting groove 120 and moves in the limiting groove 120, the two end surfaces of the bearing 200 along the axial direction do not protrude from the two end surfaces of the bearing seat 100 along the axial direction, that is, the two end surfaces of the bearing 200 along the axial direction are flush with the two end surfaces of the bearing seat 100 along the axial direction, or the two end surfaces of the bearing 200 along the axial direction are retracted into the two end surfaces of the bearing seat 100 along the axial direction. The fact that the bearing 200 has no part protruding from the bearing seat 100 can reduce the chance of wind and sand entering the bearing 200, thereby reducing the wear of the bearing 200 and increasing the service life of the bearing 200. It should be noted that in this embodiment, the axial directions of the bearing 200 and the bearing seat 100 are both consistent with the axial direction of the main shaft.

[0049] In this embodiment, the limiting protrusion 210 is axially limited by the limiting groove 120, which can prevent the bearing 200 from axially outwardly moving out of the bearing seat 100. During use, the two end surfaces of the bearing 200 along the axial direction will not protrude from the two end surfaces of the bearing seat 100 along the axial direction, so that wind and sand cannot enter the interior of the bearing 200 from both ends of the bearing 200, which can effectively reduce the probability of wind and sand entering the interior of the bearing 200, reduce the wear of the bearing 200, and enable the photovoltaic tracking bracket to operate stably and increase its service life.

[0050] In some embodiments, as Figure 3 and Figure 4 As shown, the bearing 200 includes a first bearing 220 and a second bearing 230, each of which is secured by a fastener 300. Specifically, one end of the first bearing 220 and one end of the second bearing 230 are connected by a fastener 300, and the other end of the first bearing 220 and the other end of the second bearing 230 are connected by a fastener 300. Thus, the first bearing 220 and the second bearing 230 are secured together as a single unit by the fastener 300. The separate configuration of the first and second bearings 220 and 230 not only facilitates the installation of the main shaft, but also secures the first and second bearings 220 and 230 by fasteners 300, increasing radial preload, ensuring that the bearings 200 grip the main shaft tightly, reducing the gap between the bearings 200 and the main shaft, and improving the damping force of the bearings 200. This allows for more precise rotation of the main shaft 200, improves the damping of the entire photovoltaic tracking system, reduces vibrations, and enhances the stability and safety of the system in strong winds.

[0051] Further, such as Figures 3 to 5As shown, first mounting grooves 221 are respectively provided at both ends of the outer wall of the first bearing 220; first mounting holes 222 communicating with the first mounting grooves 221 are respectively provided at both end surfaces of the first bearing 220; second mounting grooves 231 are respectively provided at both ends of the outer wall of the second bearing 230; second mounting holes 232 communicating with the second mounting grooves 231 are respectively provided at both end surfaces of the second bearing 230; fasteners 300 pass through the first mounting holes 222 and the second mounting holes 232 to fasten the first bearing 220 and the second bearing 230.

[0052] The fastener 300 can be a bolt assembly, including a bolt and a nut. First mounting grooves 221 are provided at both ends of the outer wall of the first bearing 220, and the first mounting grooves 221 communicate with the first mounting hole 222. Second mounting grooves 231 are provided at both ends of the outer wall of the second bearing 230, and the second mounting grooves 231 communicate with the second mounting hole 232. When assembling the first bearing 220 and the second bearing 230, the second bearing 230 can be first assembled with the first bearing 220. Then, at one end of the first bearing 220, a bolt can be inserted from the first mounting groove 221 into the first mounting hole 222. The bolt can then be passed through the first and second mounting holes 222 and 232, and a nut can be fastened to the bolt from the second mounting groove 231. Finally, the other ends of the first and second bearings 220 and 230 can be fastened in the same manner to secure the first and second bearings 220 and 230. That is, the first mounting hole 222 and the second mounting hole 232 are used to accommodate the shank of the bolt, one of the first mounting groove 221 and the second mounting groove 231 is used to accommodate the head of the bolt, and the other of the first mounting groove 221 and the second mounting groove 231 is used to accommodate the nut. In this embodiment, the first mounting groove 221 is used to accommodate the head of the bolt, and the second mounting groove 231 is used to accommodate the nut. Preferably, the profile of the second mounting groove 231 is a hexagonal shape that matches the nut, thereby increasing the position of the nut and preventing the bolt from loosening and causing the first bearing 220 and the second bearing 230 to separate. In this embodiment, the provision of the inwardly recessed first mounting groove 221 and the second mounting groove 231 not only facilitates the installation of the bolt, but also allows the first mounting hole 222 and the second mounting hole 232 to be directly provided on the first bearing 220 and the second bearing 230, eliminating the need for outwardly protruding lugs on the outer walls of the first bearing 220 and the second bearing 230 to securely connect the first bearing 220 and the second bearing 230, thereby simplifying the structure of the first bearing 220 and the second bearing 230.

[0053] In some embodiments, the number of the limiting groove 120 and the limiting protrusion 210 can be set to one respectively, and a limiting protrusion 210 corresponding to the limiting groove 120 is set on the first bearing 220 or the second bearing 230. The bearing 200 is axially limited by the cooperation between the limiting protrusion 210 and the limiting groove 120; the rotation angle of the bearing 200 is limited by setting the extension length of the limiting groove 120.

[0054] In some embodiments, as Figure 6 As shown, the number of limiting grooves 120 and limiting protrusions 210 is respectively set to two, wherein the limiting grooves 120 include a first limiting groove 121 and a second limiting groove 122, which are spaced apart along the circumference of the bearing mounting cavity 110. Preferably, the central angle corresponding to the first limiting grooves 121 and the second limiting grooves 122 spaced apart along the circumference is less than 180 degrees, that is, the rotation angle of the bearing 200 is less than ±90 degrees. Correspondingly, the outer walls of the first bearing 220 and the second bearing 230 are each provided with a limiting protrusion 210. The limiting protrusion 210 on the first bearing 220 extends into the first limiting groove 121, and the limiting protrusion 210 on the second bearing 230 extends into the second limiting groove 122. The cooperation of the limiting protrusion 210 on the first bearing 220 with the first limiting groove 121, and the cooperation of the limiting protrusion 210 on the second bearing 230 with the second limiting groove 122, limits the rotation angle of the bearing 200. This prevents the bearing 200 from continuing to rotate and damaging the photovoltaic modules of the photovoltaic tracking bracket after a rotation failure. The provision of two limiting protrusions 210 and two limiting grooves 120, respectively, improves the stability and reliability of the bearing 200 during rotation relative to the bearing seat 100, reducing the swing or vibration of the bearing 200 during rotation.

[0055] In some embodiments, as Figure 2 、 Figures 4 to 6As shown, the limiting groove 120 includes a first limiting groove 121 and a second limiting groove 122, and the first bearing 220 is provided with a first limiting protrusion 211 and a second limiting protrusion 212 at both ends along the circumferential direction. The first limiting protrusion 211 extends into the first limiting groove 121, and the second limiting protrusion 212 extends into the second limiting groove 122; the second bearing 230 is provided with a third limiting protrusion 213 and a fourth limiting protrusion 214 at both ends along the circumferential direction, and the third limiting protrusion 213 extends into the second limiting groove 122. The fourth limiting protrusion 214 extends into the first limiting groove 121, that is, the first limiting protrusion 211 and the fourth limiting protrusion 214 extend into the first limiting groove 121 and are arranged opposite to each other, cooperating to achieve the first limiting groove 121 limiting the bearing 200 in the circumferential and axial directions; the second limiting protrusion 212 and the third limiting protrusion 213 extend into the second limiting groove 122 and are arranged opposite to each other, cooperating to achieve the second limiting groove 122 limiting the bearing 200 in the circumferential and axial directions. Two limiting protrusions 210 are provided on the first bearing 220, and two limiting protrusions 210 are also provided on the second bearing 230. Each limiting groove 120 has two limiting protrusions 210 cooperating therewith, which not only improves the limiting accuracy of the limiting groove 120 on the limiting protrusion 210, but also further improves the stability and reliability of the bearing 200's rotation relative to the bearing seat 100, reducing the swing or vibration of the bearing 200 during rotation. In addition, two limiting protrusions 210 are provided on the first bearing 220, and the limiting protrusions 210 can act as reinforcing ribs to increase the strength of the first bearing 220. Similarly, two limiting protrusions 210 are provided on the second bearing 230 to increase the strength of the second bearing 230. Figure 5 As shown, the first limiting protrusion 211, the second limiting protrusion 212, the third limiting protrusion 213, and the fourth limiting protrusion 214 are arranged in sequence in a counterclockwise direction; the spacing between the first limiting protrusion 211 and the second limiting protrusion 212 is the same as the spacing between the third limiting protrusion 213 and the fourth limiting protrusion 214; and the extension length of the first limiting groove 121 is the same as the extension length of the second limiting groove 122. This arrangement improves structural symmetry, not only helping to balance the force distribution on the bearing 200 and the bearing seat 100, making the load more evenly distributed and reducing local stress concentration; but the symmetrical limiting design also helps maintain rotational balance and reduce vibration.

[0056] Please continue to refer to Figure 5 and Figure 6As shown, the first limiting groove 121 includes two first side walls 1211 and two second side walls 1212, the two first side walls 1211 are arranged opposite to each other, the two second side walls 1212 are arranged opposite to each other, the first limiting protrusion 211 includes two first limiting walls 2111 arranged opposite to each other, the fourth limiting protrusion 214 includes two second limiting walls 2141 arranged opposite to each other, and the two first limiting walls 2111 and the two second limiting walls 2141 are arranged on the same plane, and the first side wall 1211 limits the first limiting wall 2111 and the second limiting wall 2141 on the axis. The first limiting protrusion 211 includes a third limiting wall 2112, and the fourth limiting protrusion 214 includes a fourth limiting wall 2142. The third limiting wall 2112 and the fourth limiting wall 2142 are arranged opposite each other in the circumferential direction and cooperate with the two second side walls 1212. The two second side walls 1212 limit the maximum circumferential displacement of the third limiting wall 2112 and the fourth limiting wall 2142, thereby limiting the maximum rotation angle of the bearing 200. It can be understood that the second limiting groove 122 has the same structure as the first limiting groove 121. The second limiting groove 122 limits the circumferential and axial displacement of the second limiting protrusion 212 and the third limiting protrusion 213, thereby limiting the maximum rotation angle of the bearing 200 and preventing the bearing 200 from axially exiting the bearing seat 100.

[0057] In combination with the above embodiments, it can be seen that the number of the limiting groove 120 and the limiting protrusion 210 can be set to one or more respectively. The limiting protrusion 210 can be set at the end of the first bearing 220 and / or the second bearing 230, or it can be set in the middle of the first bearing 220 and / or the second bearing 230. There is no restriction on the position of the limiting protrusion 210, as long as it can achieve the limitation of the bearing 200. In addition, by providing the limiting groove 120 and the limiting protrusion 210, while limiting the maximum rotation angle of the bearing 200, the axial displacement of the bearing 200 is also limited, preventing the bearing 200 from escaping from the bearing seat 100. There is no need to provide additional axial limiting structures such as bearing shoulders or clamps on the main shaft to limit the axial displacement of the bearing 200, thereby simplifying the bearing structure.

[0058] In some embodiments, as Figure 6As shown, dust holes are provided at the bottom of the bearing seat 100. In this embodiment, a first dust hole 131 is provided on the bottom surface of the first limiting groove 121. The first dust hole 131 radially extends through the bearing seat 100 and is located below the bearing 200. A second dust hole 132 is provided on the bottom surface of the second limiting groove 122. The second dust hole 132 radially extends through the bearing seat 100 and is located below the bearing 200. Providing dust holes in the first limiting groove 121 and the second limiting groove 122, respectively, significantly reduces the accumulation of wind-blown sand and rainwater in the first limiting groove 121 and the second limiting groove 122, thereby reducing the impact of wind-blown sand and rainwater on the bearing 200 and reducing the wear caused by dust, wind-blown sand, impurities, and other particles on the sliding surface of the limiting protrusion 210, thereby increasing the service life of the bearing 200. In other embodiments, the number of dust holes may be one, three, or other numbers, and the dust holes may not be provided in the limiting groove 120, but may be provided at the bottom of the bearing seat 100 to facilitate the removal of sand and dust.

[0059] In some embodiments, as Figure 1 and Figure 6 As shown, the areas of the outer wall of the bearing seat 100 corresponding to the first limiting groove 121 and the second limiting groove 122 protrude from the outer wall surface of the bearing seat 100. That is, the areas of the outer wall of the bearing seat 100 corresponding to the first limiting groove 121 and the second limiting groove 122 are respectively provided with protrusions 140. The dimensions of the two protrusions 140 are respectively the same as the dimensions of the first limiting groove 121 and the second limiting groove 122, so as to increase the thickness of the areas of the bearing seat 100 where the first limiting groove 121 and the second limiting groove 122 are provided, thereby enhancing the strength of the bearing seat 100. In this embodiment, the protrusions 140 are provided only in the areas of the bearing seat 100 where the first limiting groove 121 and the second limiting groove 122 are provided, so as not to increase the overall thickness of the bearing seat 100, thereby reducing material usage and lowering production costs.

[0060] This application also provides an embodiment of a photovoltaic tracking bracket, such as Figures 1 to 6 As shown, the main shaft and the bearing assembly described in any of the above embodiments are provided in the inner ring of the bearing 200. The main shaft is fixedly connected to the bearing 200, and the bearing 200 is rotatable relative to the bearing seat 100, so that the main shaft can rotate relative to the bearing seat 100. The photovoltaic assembly of the photovoltaic tracking bracket is provided on the main shaft. When the main shaft rotates relative to the bearing seat 100, the photovoltaic assembly rotates according to the trajectory of the sun, thereby improving power generation efficiency.

[0061] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant description of other embodiments.

[0062] It should be noted that the above embodiments can be freely combined as needed. The above description is only a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application, and these improvements and modifications should also be considered as the scope of protection of the present application.

Claims

1. A bearing assembly, characterized in that: include: The bearing seat is provided with a bearing installation cavity, and the side wall of the bearing installation cavity is provided with a limiting groove extending in the circumferential direction; A bearing is installed in the bearing installation cavity, and a limiting protrusion is provided on the outer wall of the bearing. The limiting protrusion extends into the limiting groove and can move along the limiting groove; the two end surfaces of the bearing along the axial direction do not protrude from the two end surfaces of the bearing seat along the axial direction.

2. A bearing assembly according to claim 1, characterized in that: The bearing includes a first bearing and a second bearing which are separately provided, and the first bearing and the second bearing are fastened by a fastener.

3. A bearing assembly according to claim 2, characterized in that: The limiting groove includes a first limiting groove and a second limiting groove, and the first limiting groove and the second limiting groove are arranged at intervals along the circumference of the bearing installation cavity.

4. A bearing assembly according to claim 3, characterized in that: The outer walls of the first bearing and the second bearing are respectively provided with a limiting protrusion, the limiting protrusion on the first bearing extends into the first limiting groove, and the limiting protrusion on the second bearing extends into the second limiting groove.

5. The bearing assembly according to claim 3, characterized in that: A first limiting protrusion and a second limiting protrusion are respectively provided at two ends of the first bearing along the circumferential direction, the first limiting protrusion extends into the first limiting groove, and the second limiting protrusion extends into the second limiting groove; A third limiting protrusion and a fourth limiting protrusion are respectively provided at two ends of the second bearing along the circumferential direction. The third limiting protrusion extends into the second limiting groove, and the fourth limiting protrusion extends into the first limiting groove.

6. A bearing assembly according to claim 5, characterized in that: The first limiting protrusion, the second limiting protrusion, the third limiting protrusion and the fourth limiting protrusion are arranged in sequence along the counterclockwise direction; The distance between the first limiting protrusion and the second limiting protrusion is the same as the distance between the third limiting protrusion and the fourth limiting protrusion; An extension length of the first limiting groove is the same as an extension length of the second limiting groove.

7. A bearing assembly according to claim 6, characterized in that: The first limiting protrusion and the fourth limiting protrusion are arranged opposite to each other and extend into the first limiting groove, and the first limiting groove limits the circumferential and axial displacements of the first limiting protrusion and the fourth limiting protrusion; The second limiting protrusion and the third limiting protrusion are arranged opposite to each other and extend into the second limiting groove. The second limiting groove limits the circumferential and axial displacements of the second limiting protrusion and the third limiting protrusion.

8. The bearing assembly according to claim 3, characterized in that: A first dust hole is provided on the bottom surface of the first limiting groove, and the first dust hole radially penetrates the bearing seat and is located below the bearing; A second dust hole is provided on the bottom surface of the second limiting groove. The second dust hole radially penetrates the bearing seat and is located below the bearing.

9. The bearing assembly according to claim 2, characterized in that: Both ends of the outer wall of the first bearing are respectively provided with a first mounting groove; Both end surfaces of the first bearing are respectively provided with first mounting holes communicating with the first mounting groove; The outer wall of the second bearing is provided with a second mounting groove at both ends; Both end surfaces of the second bearing are respectively provided with second mounting holes communicating with the second mounting groove; The fastener passes through the first mounting hole and the second mounting hole to fasten the first bearing and the second bearing.

10. A photovoltaic tracking bracket, characterized in that: The invention comprises a main shaft and a bearing assembly according to any one of claims 1 to 9, wherein the main shaft is arranged in the inner ring of the bearing.

Images