WO2024148649A1 - Photovoltaic panel bracket of inclined single-axis multi-slewing driver and mounting method therefor - Google Patents

Abstract

The present invention relates to a photovoltaic panel bracket of an inclined single-axis multi-slewing driver and a mounting method therefor. The photovoltaic panel bracket comprises a first frame, a plurality of main shafts arranged sequentially, slewing drivers arranged at the top of the first frame and inserted between two adjacent main shafts, wherein the axes of the slewing drivers are collinear with the axes of the main shafts, and rotating shafts of the slewing drivers are threadedly connected to two adjacent main shafts. According to the present invention, slewing drivers connected to main shafts are arranged on a frame, so that the plurality of slewing drivers jointly drive a net rack to rotate, the stability and the wind resistance of the net rack are enhanced, and the service life of the net rack is guaranteed; a plurality of first bolts are provided to enhance the connection strength of the slewing drivers and the main shafts; two side plates are provided to enhance the connection strength of a top plate and the frame; and a support is provided to enhance the supporting strength of the top plate supporting the slewing drivers.

Description

Photovoltaic panel support with oblique single-axis multi-rotation drive and installation method thereof Technical Field

The present invention relates to the photovoltaic field, and in particular to the photovoltaic panel frame technology field, and specifically refers to a photovoltaic panel bracket with an inclined single-axis multi-rotation drive and an installation method thereof.

Background technique

Solar energy is a renewable energy source. It refers to the thermal radiation energy of the sun (see the three ways of heat energy transmission: radiation), and its main manifestation is the so-called sunlight. In modern times, it is generally used to generate electricity or provide energy for water heaters.

Since the birth of life on Earth, it has mainly survived on the heat radiation energy provided by the sun. Since ancient times, humans have also known how to use sunlight to dry objects and as a method of making food, such as making salt and drying salted fish. With the decreasing fossil fuels, solar energy has become an important part of human energy and is constantly developing. There are two ways to use solar energy: photothermal conversion and photoelectric conversion. Solar power generation is an emerging renewable energy source. In a broad sense, solar energy also includes wind energy, chemical energy, water energy, etc. on the earth.

At present, an inclined single-axis photovoltaic panel frame is used, in which a main shaft is connected to the photovoltaic panel, and a rotary drive for driving the main shaft to rotate is connected to the bottom end of the lowest main shaft. The rotary drive drives the main shaft and the grid to rotate, and the grid drives the photovoltaic panel to rotate, thereby adjusting the tilt angle of the photovoltaic panel. However, since there is only one rotary drive to drive the grid to rotate, the stability and wind resistance of the rear of the grid are poor, thus affecting the service life of the grid.

Summary of the invention

In view of the deficiencies in the prior art, the present invention provides a photovoltaic panel bracket with an inclined single-axis multi-rotation drive and an installation method thereof, which adopts multiple rotary drives to jointly drive the grid to rotate, thereby enhancing the stability and wind resistance of the rear of the grid, ensuring the service life of the grid, and facilitating installation.

The present invention is achieved through the following technical scheme: a photovoltaic panel bracket with an inclined single-axis multi-rotation drive, including a first frame, a plurality of main shafts arranged in sequence, a rotary drive arranged at the top of the first frame and inserted between two adjacent main shafts, the axis of the rotary drive is colinear with the axis of the main shaft, and the rotating shaft of the rotary drive is threadedly connected to the two adjacent main shafts.

This preferred solution is to arrange a rotary drive connected to the main shaft on the first frame, so that multiple rotary drives are used to jointly drive the grid to rotate, so that larger solar panels can be installed, the grid becomes wider, and the main shaft becomes longer. Each rotary drive is only responsible for the dynamic load and static load of a certain length of the main shaft, thereby enhancing the stability and wind resistance of the tail of the grid and ensuring the service life of the grid; at the same time, the torsional resistance of the main shaft is improved without increasing the cross-sectional area and wall thickness, and the wind resistance performance is improved.

Preferably, the rotary drive has a shaft connecting seat detachably connected to the rotating shaft, the shaft connecting seat extends into the main shaft, and the main shaft is threadedly connected to a plurality of first bolts evenly arranged along the circumference of the main shaft, and the first bolts are threadedly connected to the shaft connecting seat.

This preferred solution facilitates enhancing the connection strength between the main shafts of the rotary drive by setting up a plurality of first bolts; since each rotary drive drives two adjacent main shafts, the required rotary drive power can be reduced accordingly compared with the original solution. In comparison, the use of a smaller rotary drive is more cost-effective. Since a smaller rotary drive is used, a shaft connecting seat is required as an adapter to connect to the main shaft, and the shaft connecting seat is a prior art.

Preferably, a base is provided above the first frame, and the base includes two side plates arranged along the axial direction of the main shaft. The first bracket is located between the two side plates and is threadedly connected to the two side plates. The top surfaces of the two side plates are fixedly connected to the top plate. Two supports arranged radially along the main shaft are provided on the top plate. The supports are threadedly connected to the top plate by two second bolts arranged axially along the main shaft. The top surface of the supports is fixedly connected to the outer shell of the rotary drive.

This preferred solution enhances the connection strength between the top plate and the frame by providing two side plates, and enhances the support strength of the top plate supporting the rotary drive by providing a support.

Preferably, the side panels are also fixed with reinforcing ribs that fix the top surface to the top panel.

This preferred solution further enhances the connection strength between the side panels and the top panel by providing reinforcing ribs.

Preferably, a second frame supporting the main shaft and rotatably connected to the main shaft is provided below the main shaft.

This preferred solution facilitates improving the supporting strength of the main shaft by providing the second frame.

Preferably, it also includes a first fixed plate and a second fixed plate, one end of which is hinged by a hinge shaft, the top surface of the first fixed plate is fixedly connected to the bottom end of the front column supporting the lowest rotary drive, and the bottom surface of the second fixed plate is fixedly connected to the top surface of the support platform supporting the front column, and the hinge shaft extends in a horizontal plane.

When this preferred solution is in use, the hinged setting of the first fixing plate and the second fixing plate facilitates the installation and positioning of the first fixing plate and the front column to be rotated and installed on the supporting platform from one side of the supporting platform, avoiding the need to use special lifting equipment to lift the complete grid at the inclination angle of the tracker and then connect it to the front column, which causes the shortcomings of cumbersome and time-consuming lifting and connection processes.

Preferably, a plurality of anchor bolts are fixed to the top surface of the second fixing plate, the anchor bolts extend vertically and the screw head sections are fixed to the top surface of the second fixing plate, the first fixing plate is provided with long holes penetrating the first fixing plate and corresponding to the anchor bolts, the width of the long holes is smaller than the diameter of the anchor bolt pad segment, and the screw section is threadedly connected to a nut located on the top surface of the first fixing plate.

When this preferred solution is in use, during the process of the first fixing plate rotating from one side of the second fixing plate to directly above the second fixing plate, the screw segment is gradually inserted into the long hole, and finally when the first fixing plate is horizontally extended, the gasket segment is pushed to the bottom surface of the first fixing plate, thereby forming a support for the front column, and then the nut is threadedly connected to the screw segment and pushed to the top surface of the first fixing plate, and with the cooperation of the anchor bolt and the nut, the connection between the first fixing plate and the second fixing plate is completed.

Preferably, the first fixing plate is threadedly connected with an anchor bolt whose screw section passes through the first fixing plate, and the washer section of the anchor bolt is pressed against the bottom surface of the first fixing plate.

When this preferred solution is in use, when the anchor bolt gasket segment fixed to the second fixing plate is pushed against the bottom surface of the first fixing plate, the anchor bolt head segment threadedly connected to the first fixing plate is also pushed against the top surface of the second fixing plate, thereby increasing the supporting area of the second fixing plate supporting the first fixing plate and ensuring the supporting strength.

A method for installing a photovoltaic panel support with an oblique single-axis multi-rotation drive comprises the following steps:

First, install the grid, photovoltaic panel, and main shaft on the ground, and install the base on the front column and the first frame, that is, bolt the two side panels to the first frame, and bolt the top plate to the support through the second bolt, and then bolt the shaft connection seat to the rotating shaft of the rotary drive, and extend the shaft connection seat into the main shaft, and then connect the shaft connection seat to the main shaft through the first bolt, that is, install the first frame, the front column, and the photovoltaic panel together, and then install the second frame on the main shaft;

Then, the second fixing plate is connected and fastened to the support platform using anchor bolts, and then the first fixing plate is connected to the second fixing plate using a pin shaft, that is, the first fixing plate and the second fixing plate are connected using a hinge shaft, that is, the first fixing plate is hinged to the second fixing plate;

Next, lift the grid part horizontally and move it to the front column position. Rotate the front column to a suitable position and connect it to the rotary drive at the front end of the main shaft. Continue lifting. Under the action of the hinge shaft, the drive column and grid will rotate to the correct position. Then, use the anchor bolts to connect the first fixing plate and the second fixing plate.

Finally, connect the prepared first frame and second frame to the foundation, and install the remaining electrical control parts.

The beneficial effects of the present invention are as follows: by arranging a rotary drive connected to the main shaft on the frame, a plurality of rotary drives are used to jointly drive the grid to rotate, thereby enhancing the stability and wind resistance of the tail of the grid and ensuring the service life of the grid; by arranging a plurality of first bolts, it is convenient to enhance the connection strength between the main shaft of the rotary drive and the main shaft; by arranging two side panels, the connection strength between the top plate and the frame is enhanced, and by arranging the support, the supporting strength of the top plate supporting the rotary drive is enhanced.

BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 is a schematic diagram of the original scheme structure;

FIG2 is an enlarged schematic diagram of point A in FIG1 ;

FIG3 is an enlarged schematic diagram of point B in FIG1 ;

FIG4 is a schematic diagram of the structure of the present invention;

FIG5 is an enlarged schematic diagram of point C in FIG4;

FIG6 is an enlarged schematic diagram of point D in FIG4;

FIG7 is a schematic diagram of the installation at E in FIG4;

As shown in the figure: 1. front column, 2. support, 4. second bolt, 5. rotary drive, 6. first bolt, 7. shaft connecting seat, 9. main shaft, 11. reinforcement plate, 12. side plate, 13. support rod, 14. connecting rod, 15. first frame, 20. first fixed plate, 21. hinge shaft, 22. anchor bolt, 23. long hole, 24. second fixed plate, 25. grid, 26. second frame.

Implementation

In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

Referring to Figures 1-7, a photovoltaic panel bracket with an inclined single-axis multi-rotation drive of the present invention includes a plurality of main shafts 9 arranged in sequence, the main shafts 9 are connected to a grid 25, a photovoltaic panel is provided on the grid 25, a gap is provided between two adjacent main shafts 9, a rotary drive 5 is provided in the gap, a shaft connecting seat 7 is detachably connected to the rotating shaft of the rotary drive 5, both ends of the shaft connecting seat 7 extend into the two main shafts 9 respectively, a plurality of first bolts 6 uniformly arranged along the circumference of the main shaft 9 are threadedly connected to the main shaft 9, the first bolts 6 are threadedly connected to the hinge seat, the axis of the rotary drive 5 is colinear with the axis of the main shaft 9, and the shaft connecting seat 7 is the prior art.

A first frame 15 is provided below the rotary drive 5, and a base is provided above the first frame 15. The base includes two side panels 12 arranged axially along the main shaft 9. The front column 1 is located between the two side panels 12 and is threadedly connected to the two side panels 12. The top surfaces of the two side panels 12 are fixedly connected to the top plate. Two supports 2 arranged radially along the main shaft 9 are provided on the top plate. The supports 2 are threadedly connected to the top plate through two second bolts arranged axially along the main shaft 9. The top surface of the supports 2 is fixedly connected to the outer shell of the rotary drive 5, and reinforcing ribs are also fixedly connected to the side panels 12 to fix the top surface and the top plate.

A second frame 26 supporting the main shaft 9 and rotatably connected to the main shaft 9 is further provided below the main shaft 9 , and a control box electrically connected to the motor of the rotary drive 5 is also provided on the main shaft 9 .

The lowest rotary drive 5 is threadedly connected to the top of the front column 1. A support platform for supporting the front column 1 is provided below the front column 1. A first fixed plate 20 and a second fixed plate 24 are provided below the front column 1. The first fixed plate 20 is located above the second fixed plate 24. Two side ears extending upward are fixedly connected to the top surface of the second fixed plate 24. The first fixed plate 20 extends between the two side ears. A hinge shaft 21 located in a horizontal plane is also provided above the second fixed plate 24. The hinge shaft 21 passes through the side ears, the first fixed plate 20, and the side ears, so that the first fixed plate 20 is hinged to the second fixed plate 24.

The top surface of the first fixing plate 20 is fixed to the bottom end of the front pillar 1. A plurality of reinforcing plates 11 evenly arranged along the circumference of the front pillar 1 are also fixed to the top surface of the first fixing plate 20. The side surfaces of the reinforcing plates 11 close to the front pillar 1 are fixed to the front pillar 1. The bottom surface of the second fixing plate 24 is fixed to the top surface of the support platform.

Four anchor bolts 22 arranged in a rectangular shape are fixed to the top surface of the second fixing plate 24. The anchor bolts 22 include a screw head section, a gasket section, and a screw section fixed in sequence. A section of the screw head section away from the screw section is fixed to the top surface of the second fixing plate 24. A long hole 23 penetrating the first fixing plate 20 and corresponding to the anchor bolt 22 is provided on the first fixing plate 20. The screw section is inserted into the long hole 23. The width of the long hole 23 is smaller than the diameter of the gasket section. The screw section is threadedly connected to a nut located on the top surface of the first fixing plate 20.

The first fixing plate 20 is threadedly connected with an anchor bolt 22 whose screw section penetrates the first fixing plate 20 , and a washer section of the anchor bolt 22 is pressed against the bottom surface of the first fixing plate 20 .

The first frame 15 includes two support rods 13 fixed at the top end. The fixing parts of the two support rods are threadedly connected to the two side plates. The two support rods form an inverted V shape. A connecting rod 14 is also fixed between the two support rods.

In the original scheme, the conventional tilted single-axis photovoltaic panel frame adopts a single drive device structure. The drive device is usually installed at the front end of the tracker main shaft 9. The output end of the slewing driver 5 rotates to drive the main shaft 9 to rotate, so that the solar panel follows the sun to rotate. According to the size of the solar panel and the number of solar panels installed, slewing drivers 5 with different torques are selected; as the size of the solar panel increases and the number of installations increases, the main shaft 9 becomes longer and longer. In order to ensure the torsion resistance of the main shaft 9, the specification of the main shaft 9 material will become larger, and the amount of steel used in the photovoltaic panel frame will increase. During the use of the single-drive tilted single-axis tracker, even if the slewing driver 5 with a larger torque is used, the cross-sectional area of the main shaft 9 becomes larger, and the wall thickness of the main shaft 9 material increases. When encountering strong winds, since the main shaft 9 has only one braking point at the front slewing driver 5, the action distance of the large torque of the slewing driver 5 is limited, the static load at the end of the main shaft 9 is very small, and the static load at the front half of the tracker is very large. The end of the main shaft 9 is prone to a wind swing effect, which reduces the strong wind stability of the tracker.

Compared with the original solution, this preferred solution adopts multiple rotary drives 5 to act on the main shaft 9 together, so that the multiple rotary drives 5 jointly drive the grid 25 to rotate, enhance the stability and wind resistance of the grid 25, and ensure the service life of the grid 25.

During the installation of the original solution, the front column 1 must first be installed in place and the anchor bolts 22 must be tightened; the slewing drive 5 must be pre-installed at the end of the main shaft 9, the solar panel must be pre-installed in place, and a special hoist must be used to lift the complete grid 25 at the inclination angle of the photovoltaic panel frame, and then the slewing drive 5 must be connected to the front column 1. During this process, the lifting and connection process is cumbersome and time-consuming.

In the present scheme, a method for installing a photovoltaic panel bracket with an inclined single-axis multi-rotation drive is provided. First, a grid 25, a photovoltaic panel, and a main shaft 9 are installed on the ground, and the base is installed on the front column 1 and the first frame 15, that is, the two side panels 12 are bolted to the first frame 15, and the top plate is bolted to the support 2 by the second bolts 4, and then the shaft connecting seat 7 is bolted to the rotating shaft of the rotary drive 5, and the shaft connecting seat 7 is extended into the main shaft 9, and then the shaft connecting seat 7 and the main shaft 9 are connected by the first bolt 6, that is, the first frame 15, the front column 1, and the photovoltaic panel are installed together, and then the second frame 26 is installed on the main shaft 9. The method of installing the second frame 26 on the main shaft 9 is the same as the original scheme, and both are prior arts.

Then, the second fixing plate 24 is connected and fastened to the support platform using anchor bolts 22 , and then the first fixing plate 20 is connected to the second fixing plate 24 using pins, that is, the first fixing plate 20 and the second fixing plate 24 are connected using a hinge shaft 21 , that is, the first fixing plate 20 is hinged to the second fixing plate 24 .

Next, the grid 25 part is lifted horizontally and moved to the position of the front column 1, the front column 1 is rotated to the appropriate position and connected to the rotary drive at the front end of the main shaft 9, and the lifting is continued. Under the action of the hinge shaft 21, the drive column and the grid 25 will rotate to the correct position, and then the first fixed plate 20 and the second fixed plate 24 will be connected using the anchor bolts 22.

Finally, the prepared first frame 15 and second frame 26 are connected to the foundation, and the remaining electrical control parts are installed.

Of course, the above description is not limited to the above examples. Technical features not described in the present invention can be achieved by or by using existing technologies, which will not be repeated here. The above embodiments and drawings are only used to illustrate the technical scheme of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not depart from the purpose of the present invention, and should also fall within the scope of protection of the claims of the present invention.

Claims (9)

A photovoltaic panel support with an inclined single-axis multi-rotation drive, characterized in that it includes a first frame (15), a plurality of main shafts (9) arranged in sequence, and a rotary drive (5) arranged at the top of the first frame (15) and inserted between two adjacent main shafts (9), wherein the axis of the rotary drive (5) is colinear with the axis of the main shaft (9), and the rotating shaft of the rotary drive (5) is threadedly connected to the two adjacent main shafts (9). The photovoltaic panel support with an inclined single-axis multi-rotation drive according to claim 1 is characterized in that: a shaft connecting seat (7) is detachably connected to the rotating shaft of the rotary drive (5), the shaft connecting seat (7) extends into the main shaft (9), and a plurality of first bolts (6) uniformly arranged along the circumference of the main shaft (9) are threadedly connected to the main shaft (9), and the first bolts (6) are threadedly connected to the shaft connecting seat (7). The photovoltaic panel support of the inclined single-axis multi-rotation drive according to claim 1 is characterized in that: a base is provided on the top of the first frame (15), and the base includes two side plates (12) arranged axially along the main axis (9); the first frame (15) is located between the two side plates (12) and is threadedly connected to the two side plates (12); the top surfaces of the two side plates (12) are fixedly connected to the top plate; the top plate is provided with two supports (2) arranged radially along the main axis (9); the supports (2) are threadedly connected to the top plate by two second bolts (4) arranged axially along the main axis (9); the top surface of the supports (2) is fixedly connected to the outer shell of the rotary drive (5). The photovoltaic panel bracket of the inclined single-axis multi-rotation drive according to claim 3 is characterized in that: the side panel (12) is also fixed with reinforcing ribs that fix the top surface and the top plate. The photovoltaic panel support with an inclined single-axis multi-rotation drive according to claim 1 is characterized in that a second frame (26) supporting the main shaft (9) and rotatably connected to the main shaft (9) is provided below the main shaft (9). The photovoltaic panel support of the inclined single-axis multi-rotation drive according to claim 1 is characterized in that it also includes a first fixed plate (20) and a second fixed plate (24) hinged at one end by a hinge shaft (21), the top surface of the first fixed plate (20) is fixedly connected to the bottom end of the front column (1) supporting the lowest rotary drive (5), and the bottom surface of the second fixed plate (24) is fixedly connected to the top surface of the support platform supporting the front column (1), and the hinge shaft (21) extends in a horizontal plane. The photovoltaic panel support of the inclined single-axis multi-rotation drive according to claim 6 is characterized in that: a plurality of anchor bolts (22) are fixedly connected to the top surface of the second fixing plate (24), the anchor bolts (22) extend vertically and the screw head section is fixedly connected to the top surface of the second fixing plate (24), the first fixing plate (20) is provided with a long hole (23) passing through the first fixing plate (20) and corresponding to the anchor bolt (22), the width of the long hole (23) is smaller than the diameter of the gasket section of the anchor bolt (22), and the screw section is threadedly connected to a nut located on the top surface of the first fixing plate (20). The photovoltaic panel support with an inclined single-axis multi-rotation drive according to claim 7 is characterized in that: the first fixing plate (20) is threadedly connected with an anchor bolt (22) having a screw section passing through the first fixing plate (20), and the gasket section of the anchor bolt (22) is pressed against the bottom surface of the first fixing plate (20). A method for installing a photovoltaic panel support of an inclined single-axis multi-rotation drive, characterized in that it includes the following steps: firstly, a grid frame (25), a photovoltaic panel, and a main shaft (9) are installed on the ground, and a base is installed on a front column (1) and a first frame (15), that is, two side panels (12) are bolted to the first frame (15), and a top panel is bolted to a support (2) by a second bolt (4), and then a shaft connecting seat (7) is bolted to the rotating shaft of the rotary drive, and the shaft connecting seat (7) is extended into the main shaft (9), and then the shaft connecting seat (7) and the main shaft (9) are connected by a first bolt (6), that is, the first frame (15), the front column (1), and the photovoltaic panel are installed together, and then the second frame (26) is installed on the main shaft (9); Then, the second fixing plate (24) is connected to the support platform and fastened using anchor bolts (22), and then the first fixing plate (20) is connected to the second fixing plate (24) using a pin shaft, that is, the first fixing plate (20) and the second fixing plate (24) are connected using a hinge shaft (21), that is, the first fixing plate (20) is hinged to the second fixing plate (24); Next, the grid (25) is partially lifted horizontally and moved to the position of the front column (1), the front column (1) is rotated to a suitable position and connected to the rotary drive at the front end of the main shaft (9), and the lifting is continued. Under the action of the hinge shaft (21), the drive column and the grid (25) will rotate to the correct position, and then the first fixing plate (20) and the second fixing plate (24) will be connected using the anchor bolts (22); Finally, the prepared first frame (15) and the second frame (26) are connected to the foundation, and the remaining electrical control parts are installed.