Photovoltaic bracket and photovoltaic power generation system

Abstract

The present invention discloses a photovoltaic bracket and a photovoltaic power generation system, comprising a slidably connected auxiliary support plate and a main support plate, wherein a sliding push plate, a threaded sleeve and a threaded rod are arranged in the installation cylinder, and the main support plate and the sliding push plate are connected by a connecting column, the auxiliary support plate is connected to a magnetic plug extending into a sliding slot, and an electromagnet is arranged in the sliding slot, and the electromagnet is connected to a pressure rheostat through a wire, an outer sleeve with a U-shaped groove is sleeved on the outer side of the installation cylinder, and a first pressure plate and a second pressure plate are arranged in the U-shaped groove, and the second pressure plate is connected to a wind shield, and a pull rope is connected between the wind shield and the sliding push plate. The present invention automatically adjusts the height and wind-receiving area of ​​the main support plate and the auxiliary support plate according to the size of external wind force, maximizes photoelectric conversion under the premise of ensuring no overturning, and blocks the installation cylinder by sliding upwards through the wind shield, so that the flow medium is enriched on the periphery of the outer sleeve to prevent the installation cylinder and the connecting column from overturning.

Description

Technical Field

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

[0002] Photovoltaic power generation is a technology that uses the photovoltaic effect of semiconductor interfaces to directly convert light energy into electrical energy. It is mainly composed of three parts: solar panels (modules), controllers and inverters. After solar cells are connected in series and packaged for protection, they can form large-area solar cell modules, which are then combined with controllers and inverters to form photovoltaic power generation devices. However, photovoltaic power generation also has certain disadvantages. One of the disadvantages is that the energy distribution density of the irradiation is small, that is, it takes up a huge area, which increases the cost of photovoltaic power generation and is not conducive to the promotion of photovoltaic power generation.

[0003] In the prior art, there is a sliding and folding photovoltaic power generation bracket and system with a publication number of "CN114094923A", which includes a bracket, a photovoltaic panel hinged to the top of the bracket and a sub-photovoltaic panel arranged below the photovoltaic panel, and a telescopic structure is provided between the photovoltaic panel and the sub-photovoltaic panel; a photovoltaic unit is provided on the top surface of the sub-photovoltaic panel, and when the sub-photovoltaic panel is located below the photovoltaic panel, the photovoltaic unit faces the bottom surface of the photovoltaic panel; when the sub-photovoltaic panel slides to the outside of the photovoltaic panel driven by the telescopic structure, the photovoltaic unit is arranged facing the sky when the wind is small, and the sub-photovoltaic panel is stretched to increase the irradiated area, thereby increasing the power generation; when the wind is strong, the sub-photovoltaic panel is folded to reduce the size of the windshield, reduce the probability of overturning, and achieve the purpose of long-term use.

[0004] However, the prior art still has major deficiencies, such as: the prior art requires manual adjustment of the extended area of ​​the secondary photovoltaic panel, and is unable to automatically adjust the extended area of ​​the secondary photovoltaic panel according to the external wind force and the height of the photovoltaic panel. It is difficult for staff to accurately grasp the extended area of ​​the secondary photovoltaic panel, which can easily lead to the secondary photovoltaic panel overturning due to excessive extension, or reduce the photoelectric conversion efficiency due to excessive extension. In addition, the overall anti-overturning effect of the photovoltaic power generation bracket in the prior art is poor, and it is easy to overturn under the influence of wind, causing damage to the photovoltaic power generation bracket. Summary of the invention

[0005] The purpose of the present invention is to provide a photovoltaic bracket and a photovoltaic power generation system to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A photovoltaic bracket, comprising a main support plate fixedly connected to the top of a connecting column, and a secondary support plate slidably connected to the bottom of the main support plate, and photovoltaic panels are fixedly installed on the top of both the main support plate and the secondary support plate, the connecting column slides downward and is inserted into a mounting tube, and a sliding push plate fixedly connected to the connecting column is provided in the mounting tube for sliding up and down, the lower end of the sliding push plate is fixedly connected to a threaded sleeve, and a threaded rod driven by a driving motor is threadedly connected to the inner thread of the threaded sleeve;

[0008] The secondary support plate is provided with side wings wrapped around the outside of the main support plate, and the side wall of the main support plate is provided with a sliding slot, and the side wings are fixedly connected with a magnetic plug-in block that is slidably inserted into the sliding slot, an electromagnet is fixedly arranged in the sliding slot, and the electromagnet pushes the secondary support plate out of the main support plate through the magnetic plug-in block, and an elastic connecting rod is fixedly connected between the secondary support plate and the main support plate, the electromagnet is electrically connected to the power supply and the pressure resistor through a wire, and the pressure resistor is fixedly arranged in the installation cylinder, an elastic pressure block is fixedly connected between the pressure resistor and the sliding push plate, and the sliding push plate slides upward so that the resistance of the pressure resistor connected to the circuit is reduced;

[0009] An outer sleeve is fixedly sleeved on the outside of the mounting sleeve, and a U-shaped groove with two ends arranged upward is opened in the outer sleeve, a first pressure plate is arranged in the U-shaped groove close to the mounting sleeve at one end, and a second pressure plate is arranged in the U-shaped groove away from the mounting sleeve at one end, and a flowing medium is stored in the U-shaped groove between the first pressure plate and the second pressure plate, the second pressure plate is fixedly connected to a windshield plate that slides upward and extends out of the outer sleeve, and a pull rope is fixedly connected between the windshield plate and the sliding push plate, and the sliding push plate slides downward and the windshield plate is pulled upward by the pull rope.

[0010] Preferably, a cleaning plate is fixedly connected to the upper part of the side wing of the auxiliary support plate, and the cleaning plate slides against the photovoltaic panel on the main support plate.

[0011] Preferably, a guide bearing is fixedly connected above the mounting cylinder, and the connecting column slides through the guide bearing.

[0012] Preferably, the two ends of the pull rope are respectively fixedly connected to the upper end of the sliding push plate and the upper end of the windshield plate, and a fixed pulley for the pull rope to slide through is arranged on the outer side of the mounting cylinder.

[0013] Preferably, a supporting shaft rotates through the fixed pulley, and the end of the supporting shaft extending out of the fixed pulley is fixedly connected to an external baffle, a fixed connecting block is fixedly connected above the external baffle, and the fixed connecting block is fixedly connected to the side wall of the mounting tube.

[0014] Preferably, the main support plate and the auxiliary support plate are each fixedly connected with a first connecting block and a second connecting block on their side wings, and an elastic connecting rod is fixedly connected between the first connecting block and the second connecting block, the first connecting block is fixedly connected with a guide rod which slides through the elastic connecting block and the second connecting block in sequence, and one end of the guide rod extending out of the second connecting block is fixedly connected with a blocking protrusion.

[0015] Preferably, the upper part of the side wing of the secondary support plate is fixedly connected with a limit baffle, and the limit baffle slides against the top of the photovoltaic panel on the main support plate.

[0016] Preferably, the connecting column is fixedly connected to the center of the lower end of the main support plate, and a secondary support plate is slidably connected below each end of the main support plate, and the two secondary support plates are symmetrically arranged about the connecting column.

[0017] A photovoltaic power generation system, wherein the photovoltaic panels of the photovoltaic power generation system are installed on the main support plate and the auxiliary support plate of the above-mentioned photovoltaic bracket.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The photovoltaic bracket and photovoltaic power generation system of the present invention automatically adjust the height and wind-receiving area of ​​the main support plate and the auxiliary support plate according to the external wind force through the coordinated arrangement of the sliding push plate, the pressure resistor, the electromagnet and the magnetic plug, so as to maximize the photoelectric conversion under the premise of preventing overturning. Moreover, through the coordinated arrangement of the sliding push plate, the pull rope, the wind shield, the first pressure plate and the second pressure plate, when the wind force increases, the wind shield slides upward and blocks the installation tube, thereby reducing the wind force blowing on the installation tube, and the flow medium is gradually enriched on the periphery of the outer sleeve, thereby improving the wind resistance of the outer sleeve and avoiding the problem of the installation tube and the connecting column overturning due to the displacement of the outer sleeve caused by the wind force. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the state of the overall structure of the present invention at low wind force;

[0021] Figure 2 for Figure 1 Schematic diagram of the internal structure of the middle installation cylinder;

[0022] Figure 3 for Figure 1 Schematic diagram of the internal structure of the fixed pulley;

[0023] Figure 4 for Figure 1 Schematic diagram of the middle auxiliary support plate leaving the main support plate;

[0024] Figure 5 A three-dimensional schematic diagram of the auxiliary support plate leaving the main support plate in the present invention;

[0025] Figure 6 is a three-dimensional schematic diagram of the auxiliary support plate in the present invention;

[0026] Figure 7 It is a schematic diagram of the state of the overall structure of the present invention at high wind force;

[0027] Figure 8 for Figure 7 Schematic diagram of the middle auxiliary support plate being retracted to below the main support plate;

[0028] Fig. 9 It is a three-dimensional schematic diagram of the auxiliary support plate being retracted to below the main support plate in the present invention.

[0029] In the figure: 1 connecting column, 2 main support plate, 201 sliding slot, 3 auxiliary support plate, 4 photovoltaic panel, 5 mounting cylinder, 6 sliding push plate, 7 threaded sleeve, 8 threaded rod, 9 driving motor, 10 magnetic plug, 11 electromagnet, 12 elastic connecting rod, 13 wire, 14 power supply, 15 pressure rheostat, 16 elastic pressure block, 17 outer sleeve, 171 U-shaped groove, 18 first pressure plate, 19 second pressure plate, 20 wind shield, 21 pull rope, 22 cleaning plate, 23 guide bearing, 24 fixed pulley, 25 supporting shaft, 26 external baffle, 27 fixed connecting block, 28 first connecting block, 29 second connecting block, 30 guide rod, 31 blocking protrusion, 32 limit baffle. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figure 1-9 , the present invention provides a technical solution:

[0032] Embodiment 1:

[0033] A photovoltaic bracket comprises a connecting column 1 and a main supporting plate 2, wherein the connecting column 1 is fixedly connected to the center of the lower end of the main supporting plate 2, and a secondary supporting plate 3 is slidably connected to the left and right below the two ends of the main supporting plate 2, and the two secondary supporting plates 3 are symmetrically arranged about the connecting column 1, and photovoltaic panels 4 are fixedly installed above the main supporting plate 2 and the secondary supporting plate 3. When the external wind force is too strong, the two secondary supporting plates 3 slide in the direction of approaching each other and retract to the bottom of the main supporting plate 2, thereby reducing the contact area between the photovoltaic bracket and the external wind force, improving the stability of the photovoltaic bracket, and reducing the probability of the photovoltaic bracket overturning due to excessive wind force. At this time, the main supporting plate 2 blocks the photovoltaic panel 4 on the secondary supporting plate 3, so that only the photovoltaic panel 4 on the main supporting plate 2 receives sunlight for photoelectric conversion. When the external wind force decreases, the two secondary supporting plates 3 slide in the direction of moving away from each other and extend out of the main supporting plate 2, so that the photovoltaic panel 4 on the secondary supporting plate 3 leaves the main supporting plate 2, and the photovoltaic panel 4 on the secondary supporting plate 3 also receives sunlight The auxiliary support plate 3 is provided with side wings wrapped around the front and rear sides of the main support plate 2, and the upper parts of the front and rear side wings of the auxiliary support plate 3 are respectively fixedly connected with limit baffles 32 extending inwardly, and the limit baffles 32 slide against the photovoltaic panel 4 on the main support plate 2. The setting of the limit baffles 32 improves the stability of the auxiliary support plate 3 sliding left and right on the main support plate 2. A cleaning plate 22 is fixedly provided on the upper part of the side wings of the auxiliary support plate 3, and the cleaning plate 22 is fixedly connected between the two opposite limit baffles 32, and the cleaning plate 22 slides against the photovoltaic panel 4 on the main support plate 2. When the auxiliary support plate 3 slides left and right relative to the main support plate 2, the cleaning plate 22 slides on the upper end surface of the photovoltaic panel 4 on the main support plate 2, and the cleaning plate 22 slides and cleans the photovoltaic panel 4 on the main support plate 2 to remove the accumulated dust on the photovoltaic panel 4 on the main support plate 2, thereby improving the photoelectric conversion efficiency of the photovoltaic panel 4 on the main support plate 2;

[0034] A mounting tube 5 is fixedly provided below the connecting column 1, and a sliding push plate 6 is provided in the mounting tube 5 to slide up and down. The sliding push plate 6 slides against the inner wall of the mounting tube 5 and cannot rotate under the restriction of the inner wall of the mounting tube 5. For example, the sliding push plate 6 is set as a rectangular parallelepiped, and the lower end of the connecting column 1 slides downward and is inserted into the mounting tube 5 and is fixedly connected to the sliding push plate 6. A guide bearing 23 is fixedly connected above the mounting tube 5, and the connecting column 1 slides through the guide bearing 23. The setting of the guide bearing 23 limits and guides the up and down sliding process of the connecting column 1, thereby improving the stability of the up and down sliding process of the connecting column 1. A threaded sleeve 7 is fixedly connected to the lower end of the sliding push plate 6, and a threaded rod 8 driven by a driving motor 9 is connected to the inner thread of the threaded sleeve 7. The driving motor 9 drives the threaded rod 8 to rotate, and the threaded sleeve 7 cannot rotate with the threaded rod 8 under the restriction of the sliding push plate 6. The threaded fitting makes it possible for the threaded sleeve 7 to slide upward or downward during the rotation of the threaded rod 8, and the threaded sleeve 7 drives the connecting column 1 to slide up and down together through the sliding push plate 6, thereby changing the center of gravity of the main support plate 2 and the connecting column 1. The driving motor 9 is controlled and driven by a wind sensor installed on the outside of the photovoltaic bracket. When the external wind force is strong, the driving motor 9 drives the threaded rod 8 to rotate, so that the threaded sleeve 7 drives the connecting column 1 to slide downward together through the sliding push plate 6, and the main support plate 2 and the connecting column 1 slide downward and the center of gravity is lowered, thereby ensuring the stability of the main support plate 2 and the connecting column 1, and preventing the main support plate 2 and the connecting column 1 from overturning under the action of excessive wind force. When the external wind force is weak, the driving motor 9 drives the threaded rod 8 to rotate in the opposite direction, so that the threaded sleeve 7 drives the connecting column 1 to slide upward together through the sliding push plate 6, and the main support plate 2 and the connecting column 1 slide upward and the center of gravity is increased;

[0035] The side wall of the main support plate 2 is provided with two sliding slots 201 spaced apart from each other, and the two sliding slots 201 are both arranged in a left-right direction, and the side wings of the two auxiliary support plates 3 are fixedly connected with magnetic plugs 10 that are slidably inserted into the corresponding sliding slots 201, and an electromagnet 11 is fixedly arranged in the sliding slot 201, and the electromagnet 11 pushes the auxiliary support plate 3 to extend out of the main support plate 2 through the magnetic plug 10. For example, the electromagnet 11 is located at the center of the main support plate 2 and magnetically repels the magnetic plug 10, so that the electromagnet 11 pushes the auxiliary support plate 3 to extend out of the main support plate 2 through the magnetic plug 10. In this embodiment, the electromagnet 11 in the left sliding slot 201 is located at the right end of the sliding slot 201, and the electromagnet 11 in the right sliding slot 201 is located at the left end of the sliding slot 201, so that the left The side electromagnet 11 pushes the left auxiliary support plate 3 to extend to the left from the main support plate 2 through the magnetic plug block 10, and the right electromagnet 11 pushes the right auxiliary support plate 3 to extend to the right from the main support plate 2 through the magnetic plug block 10. An elastic connecting rod 12 is fixedly connected between the auxiliary support plate 3 and the main support plate 2. When the magnetism of the electromagnet 11 is relatively small, the elastic connecting rod 12 pulls the auxiliary support plate 3 back to the bottom of the main support plate 2. As the magnetism of the electromagnet 11 continues to increase, the magnetic repulsion of the electromagnet 11 on the magnetic plug block 10 continues to increase, so that the auxiliary support plate 3 overcomes the elastic pulling force of the elastic connecting rod 12 and continues to extend out of the main support plate 2. The elastic connecting rod 12 is elongated. When the magnetism of the electromagnet 11 decreases, the auxiliary support plate 3 slides in the direction of being retracted to the bottom of the main support plate 2 under the elastic pulling of the elastic connecting rod 12.

[0036] The electromagnet 11 is electrically connected to the power supply 14 and the pressure rheostat 15 through the wire 13, so that a series circuit is formed between the electromagnet 11, the power supply 14 and the pressure rheostat 15 through the wire 13. The power supply 14 provides power to the electromagnet 11, so that the electromagnet 11 is energized and has magnetism. The pressure rheostat 15 is a variable resistance device with a built-in pressure sensor. The resistance of the pressure rheostat 15 changes with the pressure applied to the pressure rheostat 15. The pressure rheostat 15 can be a stainless steel diaphragm pressure transmitter of the German model S01 series, and the pressure rheostat 15 is fixedly arranged on the top wall of the mounting tube 5. An elastic pressure block 16 is fixedly connected between the pressure rheostat 15 and the sliding push plate 6, and the greater the pressure applied to the pressure rheostat 15, the greater the power of the circuit connected to the pressure rheostat 15. The smaller the resistance, the sliding push plate 6 gradually increases the squeezing force on the elastic pressure block 16 during the upward sliding process, so that the squeezing force on the pressure resistor 15 gradually increases, so that the resistance of the pressure resistor 15 connected to the circuit is reduced during the upward sliding process of the sliding push plate 6. Of course, the pressure resistor 15 is fixedly arranged on the inner bottom wall of the mounting tube 5, and the elastic pressure block 16 is fixedly connected between the pressure resistor 15 and the sliding push plate 6. The greater the pressure on the pressure resistor 15, the greater the resistance of the circuit connected to it. The sliding push plate 6 gradually reduces the squeezing force on the elastic pressure block 16 during the upward sliding process, so that the squeezing force on the pressure resistor 15 gradually decreases, so that the resistance of the pressure resistor 15 connected to the circuit is reduced during the upward sliding process of the sliding push plate 6.

[0037] The resistance of the pressure rheostat 15 connected to the circuit decreases as the sliding push plate 6 slides upward, so that the current passing through the electromagnet 11 increases and the magnetic force of the electromagnet 11 increases, so that when the sliding push plate 6 slides upward, the secondary support plate 3 gradually extends out of the main support plate 2, and when the sliding push plate 6 slides downward, the secondary support plate 3 is gradually retracted into the main support plate 2. When the external wind force decreases, the sliding push plate 6 slides upward and the secondary support plate 3 gradually extends out of the main support plate 2, thereby improving the photoelectric conversion efficiency of the photovoltaic panel 4. When the external wind force increases, the sliding push plate 6 slides downward and the secondary support plate 3 is retracted into the main support plate 2, reducing the wind-receiving area of ​​the main support plate 2 and the secondary support plate 3, thereby reducing the overturning probability of the photovoltaic bracket, so that the photovoltaic bracket of this embodiment can automatically adjust the height and wind-receiving area of ​​the main support plate 2 and the secondary support plate 3 according to the external wind force, and maximize the photoelectric conversion without overturning;

[0038] An outer sleeve 17 is fixedly sleeved on the outside of the mounting cylinder 5, and a U-shaped groove 171 with two ends set upward is opened in the outer sleeve 17, a first pressing plate 18 is slidably arranged up and down in the end of the U-shaped groove 171 close to the mounting cylinder 5, and a second pressing plate 19 is slidably arranged up and down in the end of the U-shaped groove 171 away from the mounting cylinder 5, and a flowing medium is stored in the U-shaped groove 171 between the first pressing plate 18 and the second pressing plate 19, and the flowing medium can be selected as hydraulic oil, water and other flowing media, the second pressing plate 19 is fixedly connected with a windshield 20 that slides upward and extends out of the outer sleeve 17, and a pull rope 21 is fixedly connected between the windshield 20 and the sliding push plate 6. When the external wind force is small, the sliding push plate 6 is located at the highest point, and the second pressing plate 19 and the windshield 20 extend into the U-shaped groove 171 under the action of their own gravity, and the second pressing plate 18 and the windshield 20 extend into the U-shaped groove 171. The plate 19 presses the flow medium into the U-shaped groove 171 near one end of the mounting cylinder 5. As the external wind force continues to increase, the sliding push plate 6 gradually slides downward. The sliding push plate 6 slides downward and pulls the wind shield plate 20 to slide upward through the pull rope 21. The wind shield plate 20 slides upward and blocks the mounting cylinder 5, reducing the wind force blowing on the mounting cylinder 5, thereby reducing the problem of the mounting cylinder 5 and the connecting column 1 overturning due to excessive wind force, and the wind shield plate 20 pulls the second pressure plate 19 to slide upward. The flow medium is pressed into the U-shaped groove 171 away from one end of the mounting cylinder 5 under the action of the gravity of the first pressure plate 18, that is, the flow medium is gradually enriched on the periphery of the outer sleeve 17, thereby improving the wind resistance of the outer sleeve 17 and avoiding the problem of the mounting cylinder 5 and the connecting column 1 overturning due to the displacement of the outer sleeve 17 caused by the wind.

[0039] Embodiment 2:

[0040] Embodiment 2 discloses the travel path of the pull rope 21 on the basis of Embodiment 1, that is, the two ends of the pull rope 21 are respectively fixedly connected to the upper end of the sliding push plate 6 and the upper end of the windshield 20, and a fixed pulley 24 for the pull rope 21 to slide through is arranged on the outer side of the upper end of the mounting tube 5, so that the sliding push plate 6 slides downward and pulls the windshield 20 to slide upward through the pull rope 21;

[0041] Furthermore, a supporting shaft 25 is rotatably passed through the fixed pulley 24, the supporting shaft 25 provides rotation support for the fixed pulley 24, and the end of the supporting shaft 25 extending out of the fixed pulley 24 is fixedly connected to an external baffle 26, a fixed connection block 27 is fixedly connected above the external baffle 26, and the fixed connection block 27 is fixedly connected to the side wall of the mounting tube 5. Through the coordinated arrangement of the fixed connection block 27, the external baffle 26 and the supporting shaft 25, the fixed pulley 24 is stably rotatably arranged.

[0042] Embodiment three:

[0043] Embodiment 3 optimizes the connection method of the elastic connecting rod 12 on the basis of embodiment 1, namely: a first connecting block 28 and a second connecting block 29 are fixedly connected on the side wings of the main support plate 2 and the auxiliary support plate 3, and the elastic connecting rod 12 is fixedly connected between the first connecting block 28 and the second connecting block 29, and the first connecting block 28 is fixedly connected with a guide rod 30 that slides through the elastic connecting block 12 and the second connecting block 29 in sequence, and the guide rod 30 provides a guide limit for the elastic deformation process of the elastic connecting block 12, thereby improving the stability of the elastic deformation process of the elastic connecting block 12, and the guide rod 30 provides a guide limit for the sliding process of the auxiliary support plate 3, thereby improving the stability of the sliding process of the auxiliary support plate 3, and the end of the guide rod 30 extending out of the second connecting block 29 is fixedly connected with a blocking protrusion 31, and the setting of the blocking protrusion 31 blocks the second connecting block 29, thereby limiting the stroke of the auxiliary support plate 3, and preventing the auxiliary support plate 3 from sliding off from the main support plate 2.

[0044] A photovoltaic power generation system, wherein a photovoltaic panel 4 of the photovoltaic power generation system is installed on the main support plate 2 and the auxiliary support plate 3 of the above-mentioned photovoltaic bracket.

[0045] Working principle: When the external wind force decreases, the driving motor 9 drives the threaded rod 8 to rotate, so that the threaded sleeve 7 drives the connecting column 1 and the main support plate 2 to slide upward together through the sliding push plate 6. The sliding push plate 6 gradually increases the squeezing force on the elastic pressure block 16 during the upward sliding process, so that the resistance of the pressure resistor 15 connected to the circuit decreases, the magnetic force of the electromagnet 11 increases, the auxiliary support plate 3 gradually extends out of the main support plate 2, and the elastic connecting rod 12 is stretched;

[0046] When the external wind force increases, the driving motor 9 drives the threaded rod 8 to rotate in the opposite direction, so that the threaded sleeve 7 drives the connecting column 1 and the main support plate 2 to slide downward together through the sliding push plate 6. The sliding push plate 6 gradually reduces the squeezing force on the elastic pressure block 16 during the downward sliding process, so that the resistance of the pressure resistor 15 connected to the circuit increases, the magnetic force of the electromagnet 11 decreases, and the auxiliary support plate 3 is gradually retracted into the main support plate 2 under the pull of the elastic connecting rod 12;

[0047] The sliding push plate 6 slides downward and pulls the wind shield plate 20 to slide upward through the pull rope 21. The wind shield plate 20 slides upward and blocks the installation cylinder 5, reducing the wind force on the installation cylinder 5. The wind shield plate 20 pulls the second pressure plate 19 to slide upward. Under the action of gravity of the first pressure plate 18, the flow medium is pressed into the U-shaped groove 171 away from the end of the installation cylinder 5, that is, the flow medium is gradually enriched on the periphery of the outer sleeve 17, thereby improving the wind resistance of the outer sleeve 17.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A photovoltaic bracket, comprising a main support plate (2) fixedly connected to the top of a connecting column (1), a secondary support plate (3) slidably connected below the main support plate (2), and photovoltaic panels (4) fixedly installed above the main support plate (2) and the secondary support plate (3), characterized in that: The connecting column (1) slides downward and is inserted into the mounting tube (5), and a sliding push plate (6) fixedly connected to the connecting column (1) is provided in the mounting tube (5) for sliding up and down movement, a threaded sleeve (7) is fixedly connected to the lower end of the sliding push plate (6), and a threaded rod (8) driven by a driving motor (9) is internally threadedly connected to the threaded sleeve (7); The secondary support plate (3) is provided with a side wing wrapped around the outside of the main support plate (2), and the side wall of the main support plate (2) is provided with a sliding slot (201), and the side wing is fixedly connected with a magnetic plug (10) that is slidably inserted into the sliding slot (201), and an electromagnet (11) is fixedly arranged in the sliding slot (201), and the electromagnet (11) pushes the secondary support plate (3) to extend out of the main support plate (2) through the magnetic plug (10), and an elastic connecting rod (12) is fixedly connected between the secondary support plate (3) and the main support plate (2), and the electromagnet (11) is electrically connected to the power supply (14) and the pressure resistor (15) through a wire (13), and the pressure resistor (15) is fixedly arranged in the installation tube (5), and an elastic pressure block (16) is fixedly connected between the pressure resistor (15) and the sliding push plate (6), and the sliding push plate (6) slides upward so that the resistance of the circuit connected to the pressure resistor (15) is reduced; An outer sleeve (17) is fixedly sleeved on the outside of the mounting sleeve (5), and a U-shaped groove (171) with two ends facing upward is opened in the outer sleeve (17), a first pressing plate (18) is slidably arranged in the end of the U-shaped groove (171) close to the mounting sleeve (5), and a second pressing plate (19) is slidably arranged in the end of the U-shaped groove (171) away from the mounting sleeve (5), and a flowing medium is stored in the U-shaped groove (171) between the first pressing plate (18) and the second pressing plate (19), the second pressing plate (19) is fixedly connected with a windshield plate (20) that slides upward and extends out of the outer sleeve (17), and a pull rope (21) is fixedly connected between the windshield plate (20) and the sliding push plate (6), and the sliding push plate (6) slides downward and pulls the windshield plate (20) to slide upward through the pull rope (21).

2. The photovoltaic bracket according to claim 1, characterized in that: A cleaning plate (22) is fixedly connected to the upper part of the side wing of the auxiliary support plate (3), and the cleaning plate (22) slides against the top of the photovoltaic panel (4) on the main support plate (2).

3. The photovoltaic bracket according to claim 1, characterized in that: A guide bearing (23) is fixedly connected to the top of the installation cylinder (5), and the connecting column (1) slides through the guide bearing (23).

4. The photovoltaic bracket according to claim 1, characterized in that: The two ends of the pull rope (21) are respectively fixedly connected to the upper end of the sliding push plate (6) and the upper end of the windshield plate (20), and a fixed pulley (24) for the pull rope (21) to slide over is arranged outside the mounting tube (5).

5. The photovoltaic support according to claim 4, characterized in that: A support shaft (25) is rotatably passed through the fixed pulley (24), and the end of the support shaft (25) extending out of the fixed pulley (24) is fixedly connected to an external baffle (26), and a fixed connection block (27) is fixedly connected above the external baffle (26), and the fixed connection block (27) is fixedly connected to the side wall of the installation cylinder (5).

6. The photovoltaic support according to claim 1, characterized in that: A first connecting block (28) and a second connecting block (29) are fixedly connected to the side wings of the main supporting plate (2) and the auxiliary supporting plate (3), and an elastic connecting rod (12) is fixedly connected between the first connecting block (28) and the second connecting block (29). The first connecting block (28) is fixedly connected to a guide rod (30) which slides through the elastic connecting rod (12) and the second connecting block (29) in sequence, and one end of the guide rod (30) extending out of the second connecting block (29) is fixedly connected to a blocking protrusion (31).

7. The photovoltaic support according to claim 1, characterized in that: The upper part of the side wing of the secondary support plate (3) is fixedly connected to a limit baffle (32), and the limit baffle (32) slides against the top of the photovoltaic panel (4) on the main support plate (2).

8. The photovoltaic support according to claim 1, characterized in that: The connecting column (1) is fixedly connected to the center of the lower end of the main support plate (2), and a secondary support plate (3) is slidably connected below each end of the main support plate (2), and the two secondary support plates (3) are symmetrically arranged with respect to the connecting column (1).

9. A photovoltaic power generation system, characterized in that: The photovoltaic panel (4) of the photovoltaic power generation system is installed on the main support plate (2) and the auxiliary support plate (3) of the photovoltaic bracket described in any one of claims 1 to 8.

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