Photovoltaic power generation support

Abstract

The invention discloses a photovoltaic power generation support, and relates to the technical field of photovoltaic power generation auxiliary equipment. The photovoltaic power generation support comprises a fixed base, the upper portion of the fixed base is rotatably connected with a rotating base table, the upper portion of the rotating base table is fixedly connected with a telescopic supporting column, the upper portion of the rotating base table is fixedly connected with a fixed supporting column, the upper portion of the fixed supporting column is connected with two holding parts in a rolling mode, and the two holding parts are connected with the telescopic supporting column in a rolling mode. A sliding slot is assembled between the retaining parts, and a buffer is fixedly connected to the upper portion of the sliding slot. According to the photovoltaic power generation support, the photovoltaic power generation panel can be automatically cleaned and protected in severe weather through the automatic cleaning assembly, the automatic water outlet assembly and the automatic closing protection assembly, use of human resources is reduced, and work in severe environments is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic power generation auxiliary equipment, and in particular to a photovoltaic power generation bracket. Background Art

[0002] As a key energy source in the 21st century, solar photovoltaic power generation will become the mainstay of the world's energy supply. It is projected that by 2030, renewable energy will account for over 30% of the total energy mix, while solar photovoltaic power generation will account for over 10% of the world's total electricity supply. By 2040, renewable energy will account for over 50% of total energy consumption, and solar photovoltaic power generation will account for over 20% of total electricity. By the end of the 21st century, renewable energy will account for over 80% of the energy mix, and solar power generation for over 60%. These figures clearly demonstrate the promising development prospects of the solar photovoltaic industry and its strategic importance in the energy sector. Photovoltaic power generation, with its advantages of cleanliness, safety, widespread availability, and long lifespan, plays a crucial role in energy strategy. Photovoltaic power generation utilizes the photovoltaic effect at semiconductor interfaces to directly convert sunlight into electricity. It primarily consists of three main components: solar panels (modules), controllers, and inverters, with the majority of components being electronic components. Solar cells are connected in series and then encapsulated to form large-area solar modules. Combined with components such as power controllers, photovoltaic power generation devices are constructed.

[0003] Chinese patent CN112994592A announced on June 18, 2021 discloses a flexible bracket for photovoltaic panels, which includes a rotating base, and a first lifting assembly and a second lifting assembly facing each other are provided on the top surface of the rotating base. The rotating base is used to drive the first lifting assembly and the second lifting assembly to rotate around the center of the rotating base. The top of the second lifting assembly is connected to a fixed support plate through a second rotating pair. The front and rear end surfaces of the fixed support plate are both provided with sliding slots, and the sliding slots pass through the left end surface of the fixed support plate. A buffer assembly is provided on the top surface of the fixed support plate, and a photovoltaic panel is provided on the top of the buffer assembly. The top of the first lifting assembly is connected to a movable support assembly through a first rotating pair. The movable support assembly includes: a holding part connected to the first rotating pair; a front insertion rod fixed to the front side of the right end face of the holding part; and a rear insertion rod fixed to the rear side of the right end face of the holding part.

[0004] The above document adopts a rotating base, a first lifting assembly and a second lifting assembly so that the photovoltaic panels can be freely adjusted in angle. When the self-cleaning effect is poor, manual cleaning is required in areas with harsh environments, which wastes human resources. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the present invention provides a photovoltaic power generation bracket that solves the problems raised in the above background technology. To achieve the above purpose, the present invention is implemented through the following technical solutions: A photovoltaic power generation bracket, comprising: A fixed base, wherein a rotating base is rotatably connected to the upper portion of the fixed base, a telescopic support column is fixedly connected to the upper portion of the rotating base, and a fixed support column is fixedly connected to the upper portion of the rotating base; The top of the fixed support column is connected to a holding part in a rolling manner, and there are two holding parts, and a sliding slot is assembled between the holding parts, and a buffer is fixedly connected to the top of the sliding slot, and the top of the buffer is fixedly connected to the photovoltaic power generation panel, and the side below the photovoltaic power generation panel is fixedly connected to a cross plate, and the outer surface of the cross plate is provided with a slide groove, and the inside of the slide groove is slidably connected to a slider, and the top of the slider is fixedly connected to a cleaning plate, and a sponge is assembled under the cleaning plate, and the left and right sides of the cleaning plate are fixedly connected to counterweights, and a square counterweight block is placed inside the counterweight, and both sides of the cleaning plate are fixedly connected to thrust bodies, and both sides of the holding part are fixedly connected to a rotating shaft, and the top of the rotating shaft is fixedly connected to a push rod.

[0006] Preferably, there are two counterweight blocks, which are distributed on the left and right sides of the cleaning plate. The interior of the counterweight block is a hollow structure, and a counterweight block is placed inside the counterweight block. There are a total of twenty-four counterweight blocks, and the counterweight blocks are arranged in four directions, six in each of the up, down, left and right directions.

[0007] Preferably, the fixed base and the rotating base are circular structures, the two telescopic support columns are distributed on the left side, the telescopic support column is divided into two parts as a whole, the upper and lower parts are cylindrical, and the lower cylinder is thicker than the upper cylinder, the two fixed support columns are distributed on the right side, the fixed support columns are cylindrical as a whole, and the telescopic support columns and the fixed support columns are arranged in a square above the rotating base.

[0008] Preferably, there are four rotating shafts, which are distributed on the left and right sides of the two holding parts. The rotating shaft is divided into two parts as a whole, and both the left and right parts are cylindrical. The cylinder close to the holding part is thicker than the cylinder far away from the holding part. There are four pushing rods in total. The pushing rods above the two telescopic support columns are in the same direction, and the pushing rods above the two fixed support columns are in the same direction. The pushing rods on both sides are in an outward-facing "E" shape.

[0009] Preferably, a support plate 1 is fixedly connected to the bottom of the left side of the photovoltaic panel, a water tank is fixedly connected to the left side of the support plate, a water outlet is opened inside the water tank, a spring is fixedly connected above the water outlet, a waterproof baffle is fixedly connected to the right side of the spring, a water filling hole is opened above the surface of the water tank, and the piston is assembled inside the water filling hole.

[0010] Preferably, the overall shape of the water tank is rectangular, with a concave shape inside, and the concave shape matches the shape of the sponge.

[0011] Preferably, there are seven springs inside the water tank, and there are seven water outlet holes opened inside the water tank. The positions of the springs and the water outlet holes are staggered.

[0012] Preferably, a support plate 2 is fixedly connected to the lower right side of the photovoltaic panel, a protective plate is fixedly connected to the upper part of the support plate 2, a roller passing through the side of the protective plate is equipped in the lower middle part of the protective plate, gears are fixedly connected to the ends of both sides of the roller, and a rack is fixedly connected to the right side of the cleaning plate.

[0013] Preferably, the shape of the protection plate is convex, and the upper half of the protection plate of the roller can only be opened and closed up and down, and the opening and closing angle is ninety degrees.

[0014] Preferably, there are two racks with the same shape and distributed on both sides of the photovoltaic panel, and there are two gears with the same shape and distributed on both sides of the photovoltaic panel, and the gears are in meshing state with the racks.

[0015] The present invention provides a photovoltaic power generation bracket having the following beneficial effects: (1) This type of photovoltaic power generation bracket is raised by two telescopic support columns, which drives the rotating shaft to rotate. The push rod rotates and pushes the booster downward, so that the cleaning plate passes over the photovoltaic power generation panel with the sponge that has absorbed water, cleans the dust on the photovoltaic panel, and completes the self-cleaning function of the photovoltaic power generation panel. It can be used in an environment with serious dust pollution, effectively reducing the generation of hot spots on the photovoltaic power generation panel, increasing the use time, and reducing the manpower maintenance cost.

[0016] (2) In this type of photovoltaic power generation bracket, the water tank blocks the water outlet through a spring when not in use. When it is needed, the sponge squeezes the waterproof baffle so that the waterproof baffle is squeezed behind the water outlet. Water will then seep out of the water outlet and soak the sponge, so that the sponge can better clean the photovoltaic panel and improve the cleaning effect of the photovoltaic panel.

[0017] (3) When the cleaning plate descends, the rack of this photovoltaic power generation bracket is also driven, causing the meshing gear to rotate, driving the protective plate to open outward, so that the photovoltaic power generation panel can work normally. At the same time, the protective plate can protect the photovoltaic power generation panel from the influence of bad weather, allowing it to be deployed in areas prone to bad weather. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the overall cross-sectional three-dimensional structure of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of some parts of the present invention; Figure 4 For the present invention Figure 3 Schematic diagram of the enlarged structure of A in the middle; Figure 5 It is a schematic diagram of the three-dimensional structure of some parts of the present invention; Figure 6 For the present invention Figure 5 Schematic diagram of the enlarged structure of B; Figure 7 It is a schematic diagram of the three-dimensional structure of some parts of the present invention; Figure 8 It is a schematic diagram of the overall cross-sectional three-dimensional structure of the present invention; Figure 9 For the present invention Figure 8 Schematic diagram of the enlarged structure of C in the middle; Figure 10 It is a schematic diagram of the overall three-dimensional structure of the present invention.

[0019] In the picture: 1. Fixed base; 2. Rotating base; 3. Telescopic support column; 4. Fixed support column; 51. Rotating shaft; 52. Push rod; 53. Slide; 54. Slider; 55. Booster; 56. Counterweight; 57. Counterweight; 58. Sponge; 59. Cleaning plate; 6. Automatic water outlet assembly; 61. Water tank; 62. Water outlet hole; 63. Spring; 64. Waterproof baffle; 65. Support plate 1; 66. Piston; 7. Automatic closing protection assembly; 71. Protection plate; 72. Gear; 73. Rack; 74. Roller; 75. Support plate 2 8. Sliding slot; 9. Retaining portion; 10. Buffer; 11. Photovoltaic panel. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] For example 1, please refer to Figure 1 - Figure 7 , a photovoltaic power generation bracket, comprising: The telescopic support column 3 is arranged in a square above the rotating base 2, and the square arrangement can stably and effectively support the photovoltaic panel 11, and can effectively improve the reliability of the structure, improve the earthquake resistance, and can resist wind, rain and impact to a certain extent.The upper part of the fixed support column 4 is connected in a rolling manner with a holding part 9. There are two holding parts 9, which can keep the photovoltaic panel 11 stable and connect the two ends to play a fixing role. A sliding slot 8 is installed between the holding parts 9. When the telescopic support column 3 rises, the distance between the two holding parts 9 will become farther, and the sliding slot 8 can still remain connected when the distance becomes farther. A buffer 10 is fixedly connected to the upper part of the sliding slot 8. The buffer 10 can perform buffering compensation during the lifting and lowering process of the telescopic support column 3 to achieve buffering and shock resistance. The upper part of the buffer 10 is fixedly connected to the photovoltaic panel 11, and the side below the photovoltaic panel 11 is fixedly connected to a cross plate. The outer surface of the cross plate is provided with a slide groove 53. The inner surface of the slide groove 53 is slidably connected to a slider 54. A cleaning plate 59 is fixedly connected to the upper part of the slider 54. The slider 54 can slide in the slide groove 53. The slider 54 is connected to the cleaning plate 59, so that the cleaning plate 59 can slide horizontally on the photovoltaic panel 11. The cleaning plate 59 is equipped with a sea Sponge 58 absorbs water and provides strong cleaning capabilities without damaging photovoltaic panels 11. Counterweights 56 are fixedly connected to the left and right sides of the cleaning plate 59. Square counterweights 57 are placed inside counterweights 56. There are two counterweights 57, one on each side of the cleaning plate 59. Counterweights 56 are hollow and contain twenty-four counterweights 57, six in each of the four directions: up, down, left, and right. Counterweights 57 can slide within counterweights 56. During the downward movement, counterweights 57 contact the front end, increasing the weight of the cleaning plate 59 and the pressure of sponge 58, enabling more effective cleaning of the photovoltaic panels 11. Booster 55 is fixedly connected to both sides of the cleaning plate 59. A rotating shaft 51 is fixedly connected to both sides of the retaining portion 9. A push rod 52 is fixedly connected above the rotating shaft 51. The push rod 52 provides an initial force at the beginning of the downward movement of the cleaning plate 59.

[0022] When in use, the two telescopic support columns 3 will rise, and the rotating shaft 51 will be driven to rotate by the two telescopic support columns 3, so that the push rod 52 fixed on the rotating shaft 51 will rotate accordingly. The push rod 52 will rotate in a circular motion, and the booster 55 will be within the movement range of the push rod 52, so that the push rod 52 pushes the booster 55 to move downward. The booster 55 is fixedly connected to the cleaning plate 59, giving the cleaning plate 59 a downward thrust. At the same time, as the photovoltaic panel 11 tilts, the counterweight block 57 inside the counterweight 56 will move downward, increasing the downward force of the cleaning plate 59, so that the cleaning plate 59 passes over the photovoltaic panel 11 with the sponge 58 that has absorbed water, and cleans the dust on the photovoltaic panel 11. , and the rotating base 2 rotates with the photovoltaic panel 11 following the angle of sunlight. When it needs to be recovered at night, the telescopic support column 3 rises and falls, and the push rod 52 at the other end moves inward, pushing the booster 55 inward, so that the cleaning plate 59 and the sponge 58 complete the cleaning again and return to the original position, thus completing the self-cleaning function of the photovoltaic panel 11, allowing the photovoltaic panel 11 to be used in an environment with severe dust pollution. While ensuring the power generation efficiency, it can effectively reduce the generation of hot spots of the photovoltaic panel 11, increase the service life of the photovoltaic panel 11, and reduce the manpower maintenance cost, thereby broadening the scope of use of the photovoltaic panel 11 and improving the value of the photovoltaic panel 11.

[0023] For example 2, please refer to Figure 1 - Figure 9 On the basis of embodiment 1, a support plate 65 is fixedly connected to the bottom of the left side of the photovoltaic panel 11, and a water tank 61 is fixedly connected to the left side of the support plate 65. The overall shape of the water tank 61 is rectangular, and there is a concave shape inside. The concave shape matches the shape of the sponge 58. The concave shape matches the sponge 58 so that the sponge 58 can more effectively contact the waterproof baffle 64. A water outlet 62 is opened inside the water tank 61. The water outlet 62 can make the water in the water tank 61 flow out through the water outlet 62. A spring 63 is fixedly connected above the water outlet 62. The material of the spring 63 is made of waterproof material to cope with long-term immersion in water, which can ensure the elasticity of the spring. The water tank 61 is waterproof and will not be corroded by water. The right side of the spring 63 is fixedly connected with a waterproof baffle 64. The waterproof baffle 64 is made of rubber material to ensure sealing so that water will not flow out of the water tank 61. A water filling hole is provided above the surface of the water tank 61. A piston 66 is assembled inside the water filling hole. When the water amount inside the water tank 61 is insufficient, the piston 66 can be pulled out and water can be added to the water tank 61 from the water filling hole. There are seven springs 63 inside the water tank 61 and a total of seven water outlet holes 62 opened inside the water tank 61. The positions of the springs 63 and the water outlet holes 62 are staggered to increase the number of springs 63, so that the waterproof baffle 64 can be pushed out smoothly without being stuck.

[0024] When in use, based on the first embodiment, when in use, the sponge 58 squeezes the waterproof baffle 64 at the concave part of the concave water tank 61, and the waterproof baffle 64 is squeezed back by the sponge 58 under the gravity of the cleaning plate 59, so that the waterproof baffle 64 is squeezed to the back of the water outlet 62, and the water in the water tank 61 can flow out through the water outlet 62. At this time, due to the squeezing of the sponge 58, the sponge 58 is above the water outlet 62, replacing the waterproof baffle 64 to block the water outlet 62, so that the water will not flow out, and will only soak the sponge 58 above the water outlet 62, so that the sponge 58 also blocks the water outlet 62 while absorbing water, so that the water inside the water tank 61 will not flow out. When the wet sponge 58 leaves, the spring 6 behind the waterproof baffle 64 As the resisting force disappears, the spring 63 will press the waterproof baffle 64 to restore its original shape, causing the waterproof baffle 64 to continuously move forward and block the water outside, thereby stopping the outflow. When the sponge 58 soaked in water is used to clean the photovoltaic panel 11, its cleaning effect can be enhanced, and the photovoltaic panel 11 can be cleaned better, thereby improving the cleaning effect of the photovoltaic panel 11. To further improve the cleaning effect, the water in the water tank 61 can be replaced with a detergent to make the photovoltaic panel 11 cleaner and stabilize the power generation efficiency of the photovoltaic panel 11. The automatic water discharge component 6 can realize automatic water discharge without manual intervention, thereby reducing the time of manual supervision, improving the utilization efficiency of human resources, and greatly expanding the scope of use in sparsely populated areas.

[0025] For example three, please refer to Figure 1 - Figure 10 On the basis of the first and second embodiments, a second support plate 75 is fixedly connected to the lower right side of the photovoltaic panel 11. The second support plate 75 is used to support the entire assembly of the protection plate 71. The protection plate 71 is fixedly connected to the upper part of the support plate 75. The shape of the protection plate 71 is convex. The upper half of the protection plate 71 of the roller 74 can only be opened and closed up and down, and the opening and closing angle is 90 degrees. The protection plate 71 is made of stainless steel. When closed, there is a certain distance from the photovoltaic panel 11. It can protect the photovoltaic panel 11 in extremely bad weather such as hail, heavy rain, etc., so that it can work normally next time. The lower middle part of the protection plate 71 is equipped with a roller that runs through the side of the protection plate 71. The shaft 74 can rotate the upper part of the protective plate 71 through the roller 74, so that it can be opened as the photovoltaic panel 11 is used. The ends of both sides of the roller 74 are fixedly connected to the gears 72, and the right side of the cleaning plate 59 is fixedly connected to the rack 73. The gear 72 and the rack 73 are always in a meshing state. There are two racks 73 in total, with the same shape, and they are distributed on both sides of the photovoltaic panel 11. There are two gears 72 in total, with the same shape, and they are distributed on both sides of the photovoltaic panel 11. The gear 72 and the rack 73 are in a meshing state. The rack 73 falls as the cleaning plate 59 falls, and while falling, it drives the gears 72 on both sides to rotate synchronously, so that the protective plate 71 will be opened synchronously when it is raised or lowered.

[0026] During use, based on the first and second embodiments, during the rising process of the telescopic support column 3, the photovoltaic panel 11 will tilt, and the push rod 52 will push the cleaning plate 59 to fall, so that the two racks 73 fixedly connected to the cleaning plate 59 will also fall, and the racks 73 and the gears 72 are in a meshing state, so the racks 73 on both sides will drive the gears 72 on both sides to rotate forward during the falling process. Since the rollers 74 are fixedly connected to the gears 72 on both sides, the forward-rotating gears 72 will rotate the roller 74 in the middle of the protective plate 71, driving the closed protective plate 71 to open synchronously with the opening of the photovoltaic panel 11. When the photovoltaic panel 11 is not working, the telescopic support column 3 will drop, and the cleaning plate 59 will move back to its initial position, thereby driving the rack 73 to move horizontally, causing the meshing gear 72 to rotate in the opposite direction, and driving the roller 74 to rotate in the opposite direction to cause the protective plate 71 to close synchronously, which can protect the photovoltaic panel 11 so that it will not be accidentally damaged when it is not working at night. It can also protect the photovoltaic panel 11 in severe weather such as hail, and does not require additional manual arrangements to block severe weather, so that the photovoltaic panel 11 can be deployed in areas prone to severe weather, thereby increasing the scope of use of the photovoltaic panel 11.

[0027] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A photovoltaic power generation bracket, characterized in that: include: A fixed base (1), wherein a rotating base (2) is rotatably connected above the fixed base (1), a telescopic support column (3) is fixedly connected above the rotating base (2), and a fixed support column (4) is fixedly connected above the rotating base (2); The fixed support column (4) is connected to a holding part (9) in a rolling manner above. There are two holding parts (9) in total. A sliding slot (8) is installed between the holding parts (9). A buffer (10) is fixedly connected to the top of the sliding slot (8). The buffer (10) is fixedly connected to the photovoltaic power generation panel (11). The side below the photovoltaic power generation panel (11) is fixedly connected to a transverse plate. A sliding groove (53) is provided on the outer surface of the transverse plate. A slider (54) is slidably connected inside the sliding groove (53). A cleaning plate (59) is fixedly connected above the slider (54). A sponge (58) is installed below the cleaning plate (59). The left and right sides of the cleaning plate (56) are fixedly connected to a counterweight (56). A square counterweight block (57) is placed inside the counterweight (56). The two sides of the cleaning plate (59) are fixedly connected to a booster body (55). The two sides of the holding part (9) are fixedly connected to a rotating shaft (51). The top of the rotating shaft (51) is fixedly connected to a push rod (52).

2. A photovoltaic power generation bracket according to claim 1, characterized in that: There are two counterweights (56) distributed on the left and right sides of the cleaning plate (59). The interior of the counterweight (55) is a hollow structure. Counterweight blocks (57) are placed inside the counterweight. There are a total of twenty-four counterweight blocks (57). The counterweight blocks (57) are arranged in four directions, six in each direction, namely, up, down, left, and right.

3. The photovoltaic power generation bracket according to claim 1, characterized in that: The fixed base (1) and the rotating base (2) are circular structures. The two telescopic support columns (3) are distributed on the left side. The telescopic support column (3) is divided into two parts. The upper and lower parts are both cylindrical, and the lower cylinder is thicker than the upper cylinder. The two fixed support columns (4) are distributed on the right side. The fixed support columns (4) are cylindrical in shape. The telescopic support columns (3) and the fixed support columns (4) are arranged in a square above the rotating base (2).

4. The photovoltaic power generation bracket according to claim 1, characterized in that: There are four rotating shafts (51) distributed on the left and right sides of the two holding parts (9). The rotating shaft (51) is divided into two parts, both of which are cylindrical. The cylinder close to the holding part (9) is thicker than the cylinder far from the holding part (9). There are four pushing rods (52). The pushing rods (52) above the two telescopic support columns (3) are in the same direction, and the pushing rods (52) above the two fixed support columns (4) are in the same direction. The pushing rods (52) on both sides are in an outward-facing "X" shape.

5. The photovoltaic power generation bracket according to claim 1, characterized in that: The bottom of the left side of the photovoltaic power generation panel (11) is fixedly connected to a support plate 1 (65), the left side of the support plate (65) is fixedly connected to a water tank (61), a water outlet hole (62) is provided inside the water tank (61), a spring (63) is fixedly connected above the water outlet hole (62), a waterproof baffle (64) is fixedly connected to the right side of the spring (63), a water filling hole is provided above the surface of the water tank, and the piston (66) is assembled inside the water filling hole.

6. The photovoltaic power generation bracket according to claim 5, characterized in that: The water tank (61) has an overall rectangular shape with a concave shape inside, and the concave shape matches the shape of the sponge (58).

7. The photovoltaic power generation bracket according to claim 5, characterized in that: There are seven springs (63) inside the water tank (61), and there are seven water outlet holes (62) opened inside the water tank (61). The positions of the springs (63) and the water outlet holes are staggered.

8. The photovoltaic power generation bracket according to claim 1, characterized in that: A second support plate (75) is fixedly connected to the lower right side of the photovoltaic power generation panel (11), a protective plate (71) is fixedly connected to the upper part of the second support plate, a roller (74) passing through the side of the protective plate (71) is assembled at the lower middle part of the protective plate (71), gears (72) are fixedly connected to the ends of both sides of the roller (74), and a rack (73) is fixedly connected to the right side of the cleaning plate (59).

9. The photovoltaic power generation bracket according to claim 8, characterized in that: The shape of the protection plate (71) is convex, and the upper half of the protection plate (71) of the roller (74) can only be opened and closed in an upward and downward motion, and the opening and closing angle is ninety degrees.

10. The photovoltaic power generation bracket according to claim 8, characterized in that: There are two racks (73) with the same shape and distributed on both sides of the photovoltaic power generation panel (11); there are two gears (72) with the same shape and distributed on both sides of the photovoltaic power generation panel (11); the gears (72) and the racks (73) are in meshing state.

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