CN212463131U

CN212463131U - Photovoltaic tracking support

Info

Publication number: CN212463131U
Application number: CN202021539026.0U
Authority: CN
Inventors: 徐星伦; 杨颖�; 钟继恒
Original assignee: Arctech Solar Holding Co Ltd
Current assignee: Arctech Solar Holding Co Ltd
Priority date: 2020-07-29
Filing date: 2020-07-29
Publication date: 2021-02-02
Anticipated expiration: 2030-07-29

Abstract

The utility model belongs to the field of photovoltaic tracking equipment, and discloses a photovoltaic tracking support, which comprises a stand column component, a main beam, a first driving component, a cross beam and a second driving component, wherein the stand column component comprises a plurality of stand columns which are arranged at intervals; the main beam is connected with the tops of the plurality of upright columns and can rotate relative to the upright columns; the first driving assembly drives the main beam to rotate along the circumferential direction of the main beam; the crossbeam is rotatably arranged on the main beam, the axial direction of the crossbeam and the axial direction of the main beam form an angle, and the crossbeam is used for fixedly connecting the photovoltaic module; the second driving assembly drives the cross beam to rotate along the circumferential direction of the cross beam. The utility model can realize the adjustment of the azimuth angle of the photovoltaic module through the rotation of the main beam and the adjustment of the elevation angle of the photovoltaic module through the rotation of the cross beam, thereby realizing both azimuth tracking and altitude tracking; by adjusting the elevation angle of the photovoltaic module, no matter in any latitude area, the sunlight can be ensured to vertically irradiate the photovoltaic module, and the solar energy utilization rate is greatly improved.

Description

Photovoltaic tracking support

Technical Field

The utility model relates to a photovoltaic tracking equipment field indicates a photovoltaic tracking support especially.

Background

The photovoltaic tracker is a component for assisting the photovoltaic component to capture incident solar energy to the maximum extent, so that the solar radiation quantity received by the photovoltaic component is increased, and the overall power generation quantity is improved.

The current photovoltaic tracking products track according to azimuth angles, and in different latitude areas, the rotation angle of a photovoltaic tracking support is limited, so that the time for a photovoltaic module to face the sun is short, the solar energy utilization rate is low, the generated energy is low, and resources are wasted.

Disclosure of Invention

The utility model aims at providing a support is trailed to photovoltaic can realize that the azimuth is trailed and the elevating angle is trailed simultaneously, guarantees sunshine vertical irradiation photovoltaic module, improves the solar energy utilization ratio, lowers the resource consumption.

The utility model provides a technical scheme as follows:

a photovoltaic tracking rack, comprising:

the upright post assembly comprises a plurality of upright posts which are arranged at intervals;

the main beam is connected with the tops of the plurality of upright columns and can rotate relative to the upright columns;

the first driving assembly drives the main beam to rotate along the circumferential direction of the main beam;

the cross beam is rotatably arranged on the main beam, the axial direction of the cross beam and the axial direction of the main beam form an angle, and the cross beam is used for fixedly connecting a photovoltaic module;

and the second driving assembly drives the cross beam to rotate along the circumferential direction of the cross beam.

In the scheme, the azimuth angle of the photovoltaic module can be adjusted through the rotation of the main beam, and the elevation angle of the photovoltaic module can be adjusted through the rotation of the cross beam, so that the azimuth angle tracking and the altitude angle tracking can be realized; by adjusting the elevation angle of the photovoltaic module, no matter in any latitude area, the sunlight can be ensured to vertically irradiate the photovoltaic module, and the solar energy utilization rate is greatly improved.

Further preferably, the stand column assembly further comprises a plurality of first bearing groups, the stand columns are arranged in one-to-one correspondence with the first bearing groups, each first bearing group comprises a first bearing ring and a first bearing, the first bearing rings are arranged on the stand columns, the main beam penetrates through the first bearing rings, and the first bearings are arranged between the main beam and the first bearing rings, so that the main beam is arranged in a rotatable manner relative to the stand columns.

In this scheme, realize the rotation of girder relative stand through race ring and bearing for the girder can set up to arbitrary shape, can be square pipe or D venturi tube etc. if the girder.

Further preferably, the number of the upright post assemblies and the number of the main beams are multiple, one main beam is rotatably arranged at the top of each upright post assembly, and the main beams are arranged in parallel.

Further preferably, the first driving assembly includes a first driving member, a first driving arm, a first driving rod and a plurality of second driving rods, the first driving arm is connected to the first driving member, the first driving arm is fixedly connected to the first driving arm, and a plurality of one ends of the second driving rods are respectively pivoted to the first driving rod and a plurality of other ends of the second driving rods are respectively connected to the main beam fixedly connected to the main beam, the first driving member rotates to drive the first driving arm to rotate, the first driving arm rotates to drive the first driving rod to move, the first driving rod moves to drive the plurality of second driving rods to rotate, and the second driving rod rotates to drive the corresponding main beam to rotate.

In this scheme, realize the linkage of multirow photovoltaic tracking support through first actuating lever, the quantity of reducible first driving piece reduces equipment cost.

Further preferably, first drive assembly includes motor, worm wheel and worm, the girder run through in the worm wheel, the worm with the worm wheel meshing, motor drive the worm rotates, the worm drives when rotating the worm wheel rotates, drive when rotating the worm wheel the girder is followed the circumferential direction of girder.

Further preferably, the first driving assembly comprises a motor, a third driving arm and a push rod, the motor is used for driving a telescopic rod of the push rod to perform telescopic motion, the telescopic rod of the push rod is pivotally connected with one end of the third driving arm, the other end of the third driving arm is fixedly connected with the main beam, and the telescopic rod of the push rod drives the third driving arm to rotate around the main beam during telescopic motion, so that the main beam is driven to rotate along the circumferential direction of the main beam.

Further preferably, the axial direction of the cross beam is perpendicular to the axial direction of the main beam.

Further preferably, the main beam structure further comprises a plurality of second bearing groups, the plurality of second bearing groups are arranged on the main beam at intervals along the axial direction of the main beam, each second bearing group comprises a second bearing ring and a second bearing, the cross beam penetrates through the second bearing rings, and the second bearings are arranged between the cross beam and the second bearing rings, so that the cross beam can be rotatably arranged relative to the main beam.

In this scheme, realize the rotation of the relative girder of crossbeam through race and bearing for the crossbeam can set up to arbitrary shape, can be square pipe or D venturi tube etc. for the crossbeam.

Further preferably, the second driving assembly includes a second driving member, a second driving arm, a first connecting rod and a plurality of second connecting rods, the second driving member is disposed on the main beam, the second driving arm is fixedly connected to the second driving member, the first connecting rod is fixedly connected to the second driving arm, one end of each of the second connecting rods is pivotally connected to the first connecting rod, the other end of each of the second connecting rods is fixedly connected to one of the cross beams, the second driving member rotates to drive the second driving arm to rotate, the second driving arm rotates to drive the first connecting rod to move along the extending direction of the main beam, the first connecting rod moves to drive the second connecting rods to rotate, and the second connecting rod rotates to drive the corresponding cross beam to rotate.

In this scheme, realize the linkage of photovoltaic module on a plurality of crossbeams through first connecting rod, the quantity of reducible second driving piece reduces equipment cost.

Further preferably, the cross beam is arranged in axial symmetry relative to the main beam, and the cross beam is located on two sides of the main beam and used for mounting a row of photovoltaic modules respectively.

The technical effects of the utility model reside in that: first drive assembly drive girder rotates, the girder rotates and can realize photovoltaic module's azimuth regulation, second drive assembly drive crossbeam rotates, the crossbeam is angle setting with the girder, the rotation direction of crossbeam is different with the rotation direction of girder, photovoltaic module's altitude angle regulation can be realized in the rotation of crossbeam, altitude angle regulation has south north to tracking function, can be in different dimension area automatic adjustment photovoltaic module, guarantee sunshine vertical irradiation photovoltaic module, increase substantially the solar energy utilization ratio, reduce the energy consumption.

Drawings

The invention will be described in further detail with reference to the following drawings and embodiments:

fig. 1 is a schematic structural view of an embodiment of a photovoltaic tracking support according to the present invention;

FIG. 2 is a schematic view of the photovoltaic tracking rack of FIG. 1 after installation of a photovoltaic module;

FIG. 3 is a schematic view of the photovoltaic tracking rack of FIG. 1 from another perspective;

fig. 4 is a schematic structural view of another embodiment of a photovoltaic tracking rack according to the present invention;

FIG. 5 is an enlarged view at A in FIG. 4;

fig. 6 is a schematic structural view of the photovoltaic tracking support in fig. 4 after the photovoltaic module is installed on the photovoltaic tracking support.

The reference numbers illustrate:

11. a column; 12. a first bearing ring; 13. a first bearing; 2. a main beam; 3. a cross beam; 4. a photovoltaic module; 51. a first driving member; 52. a first drive arm; 53. a first drive lever; 54. a second drive lever; 61. a second bearing ring; 62. a second bearing; 71. a second driving member; 72. a second drive arm; 73. a first link; 74. a second link.

Detailed Description

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

For the sake of simplicity, only the parts relevant to the present invention are schematically shown in the drawings, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. In this document, "one" means not only "only one" but also a case of "more than one".

It should be further understood that the term "and/or" as 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.

In this context, it is to be understood that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not intended to indicate or imply relative importance.

In order to more clearly illustrate embodiments of the present invention or technical solutions in the prior art, specific embodiments of the present invention will be described below with reference to the accompanying drawings. It is obvious that the drawings in the following description are only examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be obtained from these drawings without inventive effort.

Example one

As shown in fig. 1 to 3, a photovoltaic tracking support comprises a column assembly, a main beam 2, a first driving assembly, a cross beam 3 and a second driving assembly, wherein the column assembly comprises a plurality of columns 11 arranged at intervals; the main beam 2 is connected with the tops of the upright posts 11 and can rotate relative to the upright posts 11; the first driving component drives the main beam 2 to rotate along the circumferential direction of the main beam 2; the crossbeam 3 is rotatably arranged on the main beam 2, the axial direction of the crossbeam 3 and the axial direction of the main beam 2 form an angle, and the crossbeam 3 is used for fixedly connecting the photovoltaic module 4; the second drive assembly drives the cross beam 4 to rotate along the circumferential direction of the cross beam 4.

Specifically, a plurality of columns 11 in the column assembly are disposed on the ground, the main beam 2 is disposed on the top of the plurality of columns 11 in the column assembly to support the main beam 2 through the columns 11, and one main beam 2 is disposed on each group of column assemblies. Be provided with crossbeam 3 that can rotate the setting relative to girder 2 on the girder 2, fixed connection photovoltaic module 4 on the crossbeam 3, when first drive assembly drive girder 2 along circumferential direction, girder 2 drives photovoltaic module 4 on crossbeam 3 and the crossbeam 3 and rotates, drives photovoltaic module 4 promptly and rotates in the east-west direction. When the second driving assembly drives the beam 3 to rotate along the circumferential direction of the beam 3, the photovoltaic assembly 4 on the beam 3 is driven to rotate, namely the photovoltaic assembly 4 is driven to rotate in the north-south direction.

The photovoltaic tracking support of the embodiment can realize rotation in two directions, the first rotation direction is that the main beam 2 rotates to drive the cross beam 3 and the photovoltaic module 4 on the cross beam 3 to rotate, the second rotation direction is that the cross beam 3 rotates relative to the main beam 2 to drive the photovoltaic module 4 on the cross beam 3 to rotate, and the axial direction of the main beam 2 and the axial direction of the cross beam 3 are arranged at an angle, in the embodiment, the axial direction of the main beam 2 and the axial direction of the cross beam 3 are mutually perpendicular, so the circumferential direction of the main beam 2 and the circumferential direction of the cross beam 3 are two different directions, namely the first rotation direction is different from the second rotation direction, as shown in fig. 1, the rotation of the photovoltaic module 4 in the first rotation direction can realize azimuth angle adjustment of the photovoltaic module 4, the rotation of the photovoltaic module 4 in the second rotation direction can realize altitude angle adjustment of the photovoltaic module 4, so that the photovoltaic, and the altitude angle tracking can be realized, has the function of north-south tracking, and can automatically adjust the photovoltaic module 4 to enable sunlight to vertically irradiate the photovoltaic module 4, thereby greatly improving the solar energy utilization rate and reducing the resource energy consumption.

The photovoltaic tracking support in this embodiment is a multi-row linkage tracking support, and the multi-row photovoltaic tracking support is driven by one first driving assembly. That is, the number of the upright post assemblies and the main beams 2 is multiple, one main beam 2 can be rotatably arranged at the top of each upright post assembly, and the main beams 2 are arranged in parallel.

In this embodiment, as shown in fig. 1 to fig. 3, the first driving assembly includes a first driving member 51, a first driving arm 52, a first driving rod 53 and a plurality of second driving rods 54, the first driving arm 52 is connected to the first driving member 51, the first driving rod 53 is fixedly connected to the first driving arm 52, one end of each of the plurality of second driving rods 54 is pivotally connected to the first driving rod 53, the other end of each of the plurality of second driving rods 54 is fixedly connected to one main beam 2, the first driving member 51 rotates to drive the first driving arm 52 to rotate, the first driving arm 52 rotates to drive the first driving rod 53 to move, the first driving rod 53 moves to drive the plurality of second driving rods 54 to rotate, and the second driving rod 54 rotates to drive the corresponding main beam 2 to rotate.

As shown in fig. 1 and fig. 3, the present embodiment is described by taking two rows of photovoltaic tracking supports as an example. The main beams 2 of the two rows of photovoltaic tracking supports are linked through the first driving rod 53, each main beam 2 is connected with a second driving rod 54, and the second driving rods 54 are pivoted with the first driving rods 53. The first driving piece 51 is a motor, a speed reducer and a worm and gear mechanism, the first driving piece 51 is arranged between two rows of photovoltaic tracking supports, and the first driving piece 51 can be placed on the ground through the supports. The first driving part 51 can drive the first driving arm 52 to rotate, the first driving arm 52 drives the first driving rod 53 to move between the two rows of photovoltaic tracking supports when rotating, the first driving rod 53 drives the second driving rod 54 pivoted with the first driving rod 53 to rotate when moving, and the second driving rod 54 can drive the main beam 2 connected with the second driving rod 54 to rotate when rotating, so that linkage of the two main beams 2 is realized, and further, linkage of azimuth adjustment of the two rows of photovoltaic tracking supports is realized. In other embodiments, the linkage of more rows of photovoltaic tracking brackets can also be realized by connecting a plurality of second driving rods 54 and a plurality of main beams 2 on the first driving rod 53.

Preferably, as shown in fig. 1 and 4, the column assembly further includes a plurality of first bearing sets, the plurality of columns 11 are disposed in one-to-one correspondence with the plurality of first bearing sets, each first bearing set includes a first bearing ring 12 and a first bearing 13, the first bearing ring 12 is disposed on the column 11, the main beam 2 passes through the first bearing ring 12, and the first bearing 13 is disposed between the main beam 2 and the first bearing ring 12, so that the main beam 2 is rotatably disposed relative to the column 11. Be equipped with a first bearing circle 12 on every stand 11, be equipped with the through-hole on the first bearing circle 12, girder 2 passes the through-hole on a plurality of first bearing circles 12 simultaneously, and first bearing 13 sets up in the through-hole, and is located between girder 2 and the first bearing circle 12, makes girder 2 rotatable setting relative to stand 11, is equipped with the retaining ring on the first bearing 13, and the retaining ring can restrict the relative first bearing circle 12 removal of first bearing 13 with first bearing circle 12 butt. In this embodiment, by providing the first bearing ring 12 and the first bearing 13, the main beam 2 having a non-circular cross section such as a rectangular cross section or a D-shaped cross section can be rotatably disposed with respect to the upright post 11. Similarly, the rotation of the beam 3 relative to the circumferential direction thereof can also be realized by a bearing ring and a bearing, and the cross section of the beam 3 can also be in a non-circular structure such as a rectangle.

Example two

The photovoltaic tracking support in the first embodiment is a multi-row tracking support, that is, one first driving assembly drives a plurality of main beams 2 to rotate; as shown in fig. 4 to 6, the present embodiment is different from the first embodiment in that the photovoltaic tracking support of the present application is a single-row tracking support, that is, one first driving assembly drives only one main beam 2 to rotate.

In one embodiment, the first driving assembly comprises a motor, a worm wheel and a worm, the main beam 2 penetrates through the worm wheel, the worm is meshed with the worm wheel, the motor drives the worm to rotate, the worm drives the worm wheel to rotate when rotating, and the worm drives the main beam 2 to rotate along the circumferential direction of the main beam 2 when rotating. Girder 2 runs through in the worm wheel, and girder 2 sets up with the worm wheel is coaxial, and the worm wheel can directly drive girder 2 along girder 2's circumferential direction when rotating.

In another embodiment, the first driving assembly includes a motor, a third driving arm and a push rod, the motor is used for driving a telescopic rod of the push rod to perform telescopic motion, the telescopic rod of the push rod is pivotally connected to one end of the third driving arm, the other end of the third driving arm is fixedly connected to the main beam 2, and the telescopic rod of the push rod drives the third driving arm to rotate around the main beam 2 during telescopic motion, so as to drive the main beam 2 to rotate along the circumferential direction of the main beam 2. In this embodiment, the telescopic rod of the push rod stretches to drive the third driving arm to rotate, and then the third driving arm rotates to drive the main beam 2 to rotate.

EXAMPLE III

On the basis of the first or second embodiment, as shown in fig. 1 to 6, the number of the cross beams 3 in the present embodiment is plural, and the plural cross beams 3 are arranged on the main beam 2 at intervals along the axial direction of the main beam 2. Set up a plurality of crossbeams 3 on girder 2, can increase the quantity of fixed photovoltaic module 4 on girder 2, and then improve the volume that the photovoltaic tracking support received the sun illumination, improve the solar energy utilization ratio.

Preferably, the plurality of cross beams 3 are arranged in the axial direction perpendicular to the axial direction of the main beam 2. The cross beam 3 is rotatably arranged on the main beam 2 through a second bearing group. As shown in fig. 5, the second bearing set includes a second bearing ring 61 and a second bearing 62, the cross beam 3 passes through the second bearing ring 61, and the second bearing 62 is disposed between the cross beam 3 and the second bearing ring 61, so that the cross beam 3 is rotatably disposed relative to the main beam 2. The second bearing ring 61 is fixed on the main beam 2, a through hole is arranged on the second bearing ring 61, the cross beam 3 passes through the through hole, and the second bearing 62 is arranged in the through hole and positioned between the cross beam 3 and the second bearing ring 61, so that the cross beam 3 can rotate relative to the main beam 2. In order to improve the supporting stability of the main beam 2 to the cross beam 3, two second bearing rings 61 can be arranged on each cross beam 3, the cross beam 3 simultaneously passes through the through openings of the two second bearing rings 61, and a second bearing 62 is arranged in each second bearing ring 61.

As shown in fig. 4, the second driving assembly includes a second driving member 71, a second driving arm 72, a first connecting rod 73 and a plurality of second connecting rods 74, the second driving member 71 is disposed on the main beam 2, the second driving arm 72 is fixedly connected to the second driving member 71, the first connecting rod 73 is fixedly connected to the second driving arm 72, one end of each of the plurality of second connecting rods 74 is pivotally connected to the first connecting rod 73, the other end of each of the plurality of second connecting rods 74 is fixedly connected to one of the cross beams 3, the second driving member 71 rotates to drive the second driving arm 72 to rotate, the second driving arm 72 rotates to drive the first connecting rod 73 to move along the extending direction of the main beam 2, the first connecting rod 73 moves to drive the plurality of second connecting rods 74 to rotate, and the second connecting rods 74 rotate to drive the corresponding cross beams 3 to rotate.

The second driving member 71 can be arranged on the main beam 2, the first connecting rod 73 is arranged in parallel with the main beam 2 in the axial direction, the second driving member 71 can be a motor, a speed reducer and a worm and gear mechanism, the second driving member 71 drives the second driving arm 72 to rotate, the second driving arm 72 drives the first connecting rod 73 to move along the main beam 2 in the axial direction when rotating, the first connecting rod 73 can drive a plurality of second connecting rods 74 connected with the first connecting rod 73 to rotate when moving, and the second connecting rod 74 can drive the cross beam 3 connected with the second connecting rod 74 to rotate when rotating, so that the linkage of the plurality of cross beams 3 is realized. That is, only one second driving member 71 can be arranged on each row of photovoltaic tracking support, and the photovoltaic modules 4 on the plurality of cross beams 3 are linked through the first connecting rod 73, so that the number of devices such as motors and speed reducers can be reduced, and the cost is reduced.

Preferably, as shown in fig. 2, the cross beams 3 are arranged in an axisymmetric manner with respect to the main beam 2, and the cross beams 3 are located at two sides of the main beam 2 for respectively mounting a row of photovoltaic modules 4. But lie in the both sides symmetry of girder 2 on crossbeam 3 and set up one row of photovoltaic module 4 for can set up two rows of photovoltaic module 4 on every crossbeam 3, not only improve the utilization ratio to solar energy, reduce the resource energy consumption, but also the use quantity of reducible driving piece, reduction equipment cost.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A photovoltaic tracking rack, comprising:

2. The photovoltaic tracking support according to claim 1, wherein the column assembly further comprises a plurality of first bearing sets, the plurality of columns are disposed in one-to-one correspondence with the plurality of first bearing sets, each first bearing set comprises a first bearing ring and a first bearing, the first bearing ring is disposed on the column, the main beam passes through the first bearing ring, and the first bearing is disposed between the main beam and the first bearing ring, so that the main beam is rotatably disposed with respect to the column.

3. The photovoltaic tracking support according to claim 1 or 2, wherein the number of the upright post assemblies and the main beams is multiple, one main beam is rotatably arranged at the top of each upright post assembly, and the plurality of main beams are arranged in parallel.

4. The photovoltaic tracking support according to claim 3, wherein the first driving assembly includes a first driving member, a first driving arm, a first driving rod and a plurality of second driving rods, the first driving arm is connected to the first driving member, the first driving rod is fixedly connected to the first driving arm, one end of each of the plurality of second driving rods is pivotally connected to the first driving rod, the other end of each of the plurality of second driving rods is fixedly connected to one of the main beams, the first driving arm rotates to drive the first driving arm to rotate, the first driving arm rotates to drive the first driving rod to move, the first driving rod moves to drive the plurality of second driving rods to rotate, and the second driving rod rotates to drive the corresponding main beam to rotate.

5. The photovoltaic tracking support according to claim 1 or 2, wherein the first driving component comprises a motor, a worm wheel and a worm, the main beam penetrates through the worm wheel, the worm is meshed with the worm wheel, the motor drives the worm to rotate, the worm drives the worm wheel to rotate when rotating, and the worm wheel drives the main beam to rotate along the circumferential direction of the main beam when rotating.

6. The photovoltaic tracking support according to claim 1 or 2, wherein the first driving assembly comprises a motor, a third driving arm and a push rod, the motor is used for driving a telescopic rod of the push rod to perform telescopic motion, the telescopic rod of the push rod is pivotally connected with one end of the third driving arm, the other end of the third driving arm is fixedly connected with the main beam, and the telescopic rod of the push rod drives the third driving arm to rotate around the main beam during telescopic motion, so as to drive the main beam to rotate along the circumferential direction of the main beam.

7. The photovoltaic tracking support according to claim 1, wherein the axial direction of the cross beam is perpendicular to the axial direction of the main beam.

8. The photovoltaic tracking support according to claim 7, further comprising a plurality of second bearing sets disposed on the main beam at intervals along an axial direction of the main beam, wherein the second bearing sets comprise second bearing rings and second bearings, the cross beam passes through the second bearing rings, and the second bearings are disposed between the cross beam and the second bearing rings, so that the cross beam is rotatably disposed relative to the main beam.

9. The photovoltaic tracking support according to claim 8, wherein the second driving assembly includes a second driving member, a second driving arm, a first connecting rod and a plurality of second connecting rods, the second driving member is disposed on the main beam, the second driving arm is fixedly connected to the second driving member, the first connecting rod is fixedly connected to the second driving arm, one end of each of the plurality of second connecting rods is pivotally connected to the first connecting rod, the other end of each of the plurality of second connecting rods is fixedly connected to one of the cross beams, the second driving member rotates to drive the second driving arm to rotate, the second driving arm rotates to drive the first connecting rod to move along the extending direction of the main beam, the first connecting rod moves to drive the plurality of second connecting rods to rotate, and the second connecting rod rotates to drive the corresponding cross beam to rotate.

10. The photovoltaic tracking support according to claim 7, wherein the cross beams are disposed in an axisymmetric manner with respect to the main beam, and the cross beams are disposed on two sides of the main beam for mounting a row of photovoltaic modules.