Bearing assembly and photovoltaic tracking bracket
Patent Information
- Application Number
- CN202521961836.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-12
- Publication Date
- 2026-09-01
- Estimated Expiration
- 2035-09-12
AI Technical Summary
[0002]在光伏跟踪支架中，为保证主轴旋转的顺畅，实现光伏组件随着太阳轨迹旋转，提升发电效率，塑料轴承得到了越来越广泛的应用，对于塑料轴承配套的轴承座的设计，一般采用砂芯铸造模具，形成内凹面空腔，但铸造内凹面表面粗糙度大，与塑料轴承之间的摩擦力大，影响光伏跟踪支架的跟踪精度
Smart Images
Figure CN224706153U_ABST
Abstract
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 for plastic bearings generally adopts 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] A bearing base includes a base and an arc-shaped portion disposed on the base, wherein the inner surface of the arc-shaped portion is provided with a groove;
[0008] A bearing cover is fixed on the bearing base. The bearing cover includes a first bearing seat and a second bearing seat. The first bearing seat and the second bearing seat form a through hole. The outer surface of the second bearing seat at least partially fits the inner surface of the arc-shaped part and is provided with a protrusion. The protrusion is adapted to the groove.
[0009] The bearing is fitted into the through hole.
[0010] As a further improvement of this utility model, the bearing base is formed by die casting, and the first bearing base and the second bearing base are formed by stamping.
[0011] As a further improvement of the present invention, the second bearing seat is provided with a flange, which extends from both axial sides of the second bearing seat toward a direction away from the through hole, and the flange abuts against both axial sides of the arc-shaped portion.
[0012] As a further improvement of the present invention, the bearing base further includes a fixing part disposed at both ends of the arc-shaped portion, the first bearing seat is provided with a first connecting part at both ends, and the second bearing seat is provided with a second connecting part at both ends, and the first connecting part, the second connecting part and the fixing part are fixedly connected by fasteners.
[0013] As a further improvement of the present invention, the inner surface of one of the first bearing housing and the second bearing housing is provided with a limiting groove, and the outer surface of the bearing is provided with a limiting protrusion. The limiting protrusion is adapted to the limiting groove and can slide along the limiting groove.
[0014] As a further improvement of the present invention, the limiting groove has a bottom surface and a limiting surface connected to both ends of the bottom surface, wherein the angle between the limiting surface and the bottom surface is less than 180°.
[0015] As a further improvement of this utility model, the bottom surface of the groove is an arc-shaped surface, and the limiting surface is a plane.
[0016] As a further improvement of this utility model, the bearing is provided with a hollowed-out groove;
[0017] And / or, the inner surface of the arcuate portion is formed as a concave spherical surface, and the outer surface of the second bearing seat is formed as a convex spherical surface.
[0018] As a further improvement of this utility model, the inner surfaces of the first bearing housing and the second bearing housing are formed as concave spherical surfaces, and the outer surface of the bearing is formed as a convex spherical surface.
[0019] To achieve the above objectives, the present invention also adopts the following technical solution:
[0020] 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.
[0021] Compared with the prior art, the beneficial effects of the bearing assembly and photovoltaic tracking bracket of this utility model are as follows: The bearing assembly includes a bearing base, a bearing cover, and a bearing. The bearing cover is fixed on the bearing base and includes a first bearing seat and a second bearing seat. The bearing is disposed in the through hole formed by the first bearing seat and the second bearing seat. This can reduce the friction between the bearing and the first or second bearing seat while ensuring the supporting strength of the bearing assembly, thereby reducing bearing wear, improving tracking accuracy, and extending the service life of the bearing. The arc-shaped part of the bearing base is provided with a groove, and the second bearing seat fits into the arc-shaped part and is provided with a protrusion that matches the groove, which strengthens the limiting fit between the bearing base and the bearing cover, and the bearing base provides support for the bearing cover. Attached Figure Description
[0022] Figure 1 This is a three-dimensional structural diagram of a bearing assembly according to a specific embodiment of the present utility model;
[0023] Figure 2 This is an exploded structural diagram of a bearing assembly according to a specific embodiment of the present invention;
[0024] Figure 3 This is a schematic diagram of the structure of a bearing base according to a specific embodiment of the present utility model;
[0025] Figure 4 This is a schematic diagram of the structure of the bearing base and the second bearing seat according to a specific embodiment of the present utility model;
[0026] Figure 5 This is a schematic diagram of the structure of the first bearing housing and the bearing according to a specific embodiment of the present invention;
[0027] Figure 6 for Figure 5 Enlarged structural diagram of region A in the middle;
[0028] Figure 7 This is a schematic diagram of the structure of the first bearing housing and the second bearing housing according to a specific embodiment of the present utility model. 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 7 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 bearing base 1, a bearing cover 2, and a bearing 3. The bearing cover 2 is fixed to the bearing base 1 and includes a first bearing seat 21 and a second bearing seat 22. The first bearing seat 21 and the second bearing seat 22 enclose a through hole 20. The bearing 3 is adapted to be disposed within the through hole 20, and the inner side of the bearing 3 forms a space for the main shaft to pass through.
[0033] Please see Figures 1 to 3 As shown, the bearing base 1 includes a base 11 and an arc-shaped portion 12 disposed on the base 11. The arc-shaped portion 12 is semi-circular. The first bearing seat 21 and the second bearing seat 22 are both semi-circular and disposed opposite to each other, wherein the first bearing seat 21 is located on the upper side and the second bearing seat 22 is located on the lower side. The outer surface of the second bearing seat 22 at least partially conforms to the arc-shaped portion 12. The first bearing seat 21, the second bearing seat 22, and the bearing base 1 are fixedly connected. With this configuration, the bearing base 1 can provide effective support for the bearing cover 2, and the bearing base 1 and the bearing cover 2 are stably connected.
[0034] Please see Figure 1 and Figure 2As shown, the bearing base 1 also includes fixing portions 13 disposed at both ends of the arc-shaped portion 12. The first bearing housing 21 has first connecting portions 211 at both ends, and the second bearing housing 22 has second connecting portions 223 at both ends. The first connecting portions 211, second connecting portions 223, and fixing portions 13 are fixedly connected by fasteners 4. Specifically, in this embodiment, the first connecting portions 211, second connecting portions 223, and fixing portions 13 are all flat and sequentially fitted together. Each of the three has holes for the fasteners 4 to pass through. The fasteners 4 are bolt assemblies or other commonly used connecting components. This design, with the bearing base 1 reinforced on both sides perpendicular to the axial direction, improves the overall compressive strength. The reinforcement on both sides of the first bearing housing 21 and the second bearing housing 22 increases local strength. Furthermore, the connection strength between the first bearing housing 21, the second bearing housing 22, and the bearing base 1 is high, resulting in better overall stability of the bearing assembly.
[0035] In this embodiment, the bearing base 1 is formed by die casting, while the first bearing housing 21 and the second bearing housing 22 are formed by stamping. This arrangement ensures that the bearing base 1, made of die-cast metal, has high strength and can withstand large loads. The first bearing housing 21 and the second bearing housing 22, made of stamped metal, maintain support strength while forming a smooth and flat surface, reducing friction with the bearing 3, thereby reducing wear on the bearing 3, improving tracking accuracy, and extending the service life of the bearing 3.
[0036] Please see Figure 3 and Figure 4 As shown, the inner surface of the arc-shaped portion 12 is provided with a groove 121, and the outer surface of the second bearing seat 22 is provided with a protrusion 221, which is adapted to the groove 121. Furthermore, the groove 121 is located at the center of the arc-shaped portion 12 along the axial direction. This arrangement strengthens the limiting fit between the bearing base 1 and the second bearing seat 22, axially limiting the second bearing seat 22, thereby strengthening the limiting fit between the bearing base 1 and the bearing cover 2. Simultaneously, the axial portions on both sides of the groove 121 of the arc-shaped portion 12 provide support for the bearing cover 2.
[0037] Please see Figure 3 and Figure 4 As shown, the inner surface of the arc-shaped portion 12 is formed as a concave spherical surface, and the outer surface of the second bearing seat 22 is formed as a convex spherical surface. With this configuration, the inner diameter of the arc-shaped portion 12 gradually increases from both ends to the middle, which can better limit the positioning of the second bearing seat 22.
[0038] Please see Figure 1 , Figure 4 and Figure 7As shown, the second bearing housing 22 is also provided with flanges 222, which extend from both axial sides of the second bearing housing 22 in a direction away from the through hole 20, and the flanges 222 on both sides abut against the axial sides of the arc-shaped portion 12 respectively. This arrangement further prevents the second bearing housing 22 from axially displacing in the bearing base 1, thereby restricting the axial degree of freedom of the bearing cover 2.
[0039] Please see Figure 1 , Figure 3 and Figure 4 As shown, the base 11 of the bearing base 1 is provided with a nut limiting structure 111. The bearing base 1 is fixedly installed on the column of the photovoltaic tracking bracket through the base 11. Generally, the two are fixedly connected by a bolt assembly. The bolt passes through the column and the base 11 from bottom to top and is locked with a nut on one side of the base 11. In this embodiment, the nut limiting structure 111 is provided. First, the nut is placed on one side of the base 11, and both sides of the nut abut against the nut limiting structure 111, thus fixing the nut and restricting its rotation. Then, the bolt is inserted and tightened, which can improve the installation stability of the bearing base 1.
[0040] Please see Figure 2 , Figure 5 and Figure 6 As shown, a limiting groove 212 is provided on the inner surface of one of the first bearing housing 21 and the second bearing housing 22, and a limiting protrusion 31 is provided on the outer surface of the bearing 3. The limiting protrusion 31 is adapted to the limiting groove 212 and can slide along the limiting groove 212. With this configuration, the cooperation between the limiting groove 212 and the limiting protrusion 31 can restrict the rotation direction of the bearing 3, so that it can only rotate about the axial direction.
[0041] Further, please refer to Figure 5 and Figure 6 As shown, the limiting groove 212 has a groove bottom surface 2121 and limiting surfaces 2122 connected to both ends of the groove bottom surface 2121, and the included angle between the limiting surfaces 2122 and the groove bottom surface 2121 is less than 180°. Furthermore, the groove bottom surface 2121 is an arc-shaped surface, and the limiting surfaces 2122 are flat. This configuration limits the displacement range of the limiting protrusion 31, with the limiting surfaces 2122 at both ends representing the limit displacement positions of the limiting protrusion 31, thereby limiting the rotation angle range of the bearing 3; and the groove bottom surface 2121 and the limiting surfaces 2122 are connected, providing a certain transition and reducing the likelihood of wear on the limiting protrusion 31.
[0042] Please see Figure 1 , Figure 2 and Figure 5As shown, the bearing 3 has a hollowed-out groove 32, which is recessed from the inner surface of the bearing 3. This design 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.
[0043] Please see Figure 2 and Figure 7 As shown, in this embodiment, the first bearing seat 21 and the second bearing seat 22 are identical in shape and size. That is, the parts provided on the first bearing seat 21 are also present on the second bearing seat 22, and vice versa. Furthermore, both the first bearing seat 21 and the second bearing seat 22 are symmetrical structures. This arrangement not only facilitates the manufacturing of the first bearing seat 21 and the second bearing seat 22 but also their installation, eliminating the need to distinguish their vertical or horizontal positions and improving installation efficiency. Moreover, on the first bearing seat 21 and the second bearing seat 22, the protrusions 221 on the outer surface correspond to the limiting grooves 212 on the inner surface, thus the protrusions 221 can compensate for the strength deficiency at the limiting grooves 212.
[0044] Further, please refer to Figure 1 , Figure 2 and Figure 7 As shown, the first bearing housing 21 and the second bearing housing 22 are also provided with a reinforcing part 213. The reinforcing part 213 connects the first connecting part 211 and the flange 222, and the reinforcing part 213 connects the second connecting part 223 and the flange 222. This arrangement forms a triangular structure, which improves the structural strength of the first bearing housing 21 and the second bearing housing 22.
[0045] Please see Figure 1 , Figure 2 and Figure 5 As shown, bearing 3 includes a first split bearing 301 and a second split bearing 302, which are inserted vertically. One of the first split bearing 301 and the second split bearing 302 has a plug, and the other has a slot that mates with the plug. This arrangement allows the first split bearing 301 and the second split bearing 302 to be connected by a plug-in method, which restricts the vertical movement of bearing 3, increases the contact area and connection strength of bearing 3, and reduces the risk of breakage.
[0046] Please see Figure 1 , Figure 2 and Figure 5 As shown, in this embodiment, the inner surfaces of the first bearing housing 21 and the second bearing housing 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 better adapt to the terrain and installation errors.
[0047] In this embodiment of the bearing assembly, the first split bearing 301 and the second split bearing 302 of the bearing 3 are first inserted vertically and placed between the first bearing seat 21 and the second bearing seat 22 of the bearing cover 2. Finally, the whole assembly is placed on the bearing base 1 and locked and fixed with fasteners 4 on both sides to complete the installation.
[0048] In summary, compared with the prior art, the bearing assembly and photovoltaic tracking bracket of this utility model have the following advantages: The bearing assembly includes a bearing base 1, a bearing cover 2, and a bearing 3. The bearing cover 2 is fixed on the bearing base 1 and includes a first bearing seat 21 and a second bearing seat 22. The bearing 3 is disposed in the through hole 20 formed by the first bearing seat 21 and the second bearing seat 22. This can reduce the friction between the bearing 3 and the first bearing seat 21 or the second bearing seat 22 while ensuring the supporting strength of the bearing assembly, thereby reducing the wear of the bearing 3, improving the tracking accuracy, and extending the service life of the bearing 3. The arc-shaped part 12 of the bearing base 1 is provided with a groove 121. The second bearing seat 22 fits the arc-shaped part 12 and is provided with a protrusion 221 that matches the groove 121, which strengthens the limiting fit between the bearing base 1 and the bearing cover 2. The bearing base 1 provides support for the bearing cover 2.
[0049] 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 bearing base (1) includes a base (11) and an arc-shaped portion (12) disposed on the base (11), wherein the inner surface of the arc-shaped portion (12) is provided with a groove (121); A bearing cover (2) is fixed on the bearing base (1). The bearing cover (2) includes a first bearing seat (21) and a second bearing seat (22). The first bearing seat (21) and the second bearing seat (22) surround each other to form a through hole (20). The outer surface of the second bearing seat (22) is at least partially attached to the inner surface of the arc-shaped part (12) and is provided with a protrusion (221). The protrusion (221) is adapted to the groove (121). The bearing (3) is adapted to be installed in the through hole (20).
2. The bearing assembly of claim 1, wherein: The bearing base (1) is formed by die casting, and the first bearing base (21) and the second bearing base (22) are formed by stamping.
3. The bearing assembly according to claim 1, characterized in that: The second bearing housing (22) is provided with a flange (222), which extends from both axial sides of the second bearing housing (22) toward a direction away from the through hole (20), and the flange (222) abuts against both axial sides of the arc-shaped portion (12).
4. The bearing assembly of claim 1, wherein: The bearing base (1) further includes a fixing part (13) disposed at both ends of the arc-shaped part (12). The first bearing seat (21) has a first connecting part (211) at both ends, and the second bearing seat (22) has a second connecting part (223) at both ends. The first connecting part (211), the second connecting part (223) and the fixing part (13) are fixedly connected by fasteners (4).
5. The bearing assembly of claim 1, wherein: The inner surface of one of the first bearing housing (21) and the second bearing housing (22) is provided with a limiting groove (212), and the outer surface of the bearing (3) is provided with a limiting protrusion (31). The limiting protrusion (31) is adapted to the limiting groove (212) and can slide along the limiting groove (212).
6. The bearing assembly of claim 5, wherein: The limiting groove (212) has a bottom surface (2121) and limiting surfaces (2122) connected to both ends of the bottom surface (2121), and the angle between the limiting surface (2122) and the bottom surface (2121) is less than 180°.
7. The bearing assembly according to claim 6, characterized in that: The bottom surface (2121) of the groove is an arc-shaped surface, and the limiting surface (2122) is a plane.
8. The bearing assembly according to claim 1, characterized in that: The bearing (3) is provided with a hollowed-out groove (32); and / or, the inner surface of the arc-shaped portion (12) is formed as a concave spherical surface, and the outer surface of the second bearing seat (22) is formed as a convex spherical surface.
9. The bearing assembly according to any one of claims 1-8, characterized in that: The inner surfaces of the first bearing housing (21) and the second bearing housing (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.