An adjustable photovoltaic mounting bracket

Abstract

The application discloses an adjustable photovoltaic mounting support, which comprises a base, an adjusting mechanism is arranged outside the base, the adjusting mechanism comprises two rotating plates, rotating rods are fixedly connected to the bodies of the two rotating plates, a group of supporting plates are rotationally connected to the end portions of the two rotating rods, the outer surfaces of the supporting plates on the other side are fixedly connected with the outer surface of the base, recesses are formed in the sides of the outer surfaces of the two rotating plates which are close to each other, photovoltaic plates are arranged in the recesses, column grooves are formed in the outer surfaces of the two rotating plates, and hinges are arranged in the column grooves, and the application relates to the technical field of photovoltaic mounting devices, and solves the problem that, when the existing adjustable photovoltaic support is used, only the orientation angle of the photovoltaic plate is adjusted to avoid direct contact with the wind direction, but the photovoltaic plate is still exposed to the outside world, so that the photovoltaic plate is still vulnerable to damage caused by flying sand and stones.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic installation equipment technology, specifically to an adjustable photovoltaic mounting bracket. Background Technology

[0002] Current adjustable photovoltaic (PV) brackets only consider aligning with the angle of sunlight to improve power generation efficiency, but neglect the impact of wind on the stability of the PV bracket installation. Invention patent CN118763976A discloses a distributed adjustable PV bracket, including a bracket body comprising a fixed base, a rotating base, and a crossbeam. Through a wind-measuring mechanism and a locking mechanism, the PV bracket is automatically adjusted to an angle less affected by wind during windy weather, and then continuously locked, thereby reducing the impact of wind. Furthermore, invention patent CN118432511A discloses an adjustable PV bracket including a base. A cleaning component removes sand particles adhering to the surface of the PV panels, effectively preventing sand accumulation and improving PV power generation efficiency.

[0003] While both of the aforementioned devices can reduce the impact of wind on photovoltaic panels by adjusting their orientation angle, they still have certain drawbacks in practical use. Firstly, the former is greatly affected by wind strength and direction, making the adjustment angle of the photovoltaic panel not fixed. Secondly, both devices change the orientation angle of the photovoltaic panel to prevent it from directly contacting the wind, but even after adjustment, the photovoltaic panel is still exposed to the outside world and is still easily damaged by flying sand and stones. Therefore, it is necessary to solve the problems that still exist in the existing adjustable photovoltaic brackets. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an adjustable photovoltaic mounting bracket, which solves the problem that existing adjustable photovoltaic brackets only adjust the orientation angle of the photovoltaic panels to avoid direct contact with the wind, but still leave the photovoltaic panels exposed to the outside world, making them susceptible to damage from flying sand and stones.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an adjustable photovoltaic mounting bracket, comprising a base, an adjustment mechanism provided on the outside of the base, the adjustment mechanism comprising two rotating plates, each of the two rotating plates having a rotating rod fixedly connected through it, and each of the ends of the two rotating rods having a set of support plates rotatably connected through it, the outer surface of the other support plate being fixedly connected to the outer surface of the base, grooves being provided on the sides of the outer surfaces of the two rotating plates that are close to each other, photovoltaic panels being provided inside the grooves on both sides, and column grooves being provided on the outer surfaces of the two rotating plates, with hinges provided inside the column grooves.

[0006] Preferably, a waterproof elastic fabric is movably connected to the outer surface of the hinge, and Velcro is fixedly connected to both sides of the outer surface of the waterproof elastic fabric. The outer surfaces of the Velcro on both sides are respectively fixedly connected to the outer surfaces of the two rotating plates.

[0007] Preferably, a protective component is provided on the outside of one of the rotating plates. The protective component includes a baffle. The baffle is disposed on the outside of one of the rotating plates. Springs are fixedly connected to both sides of the baffle. A connecting bar is fixedly connected to one end of each spring. The outer surfaces of the connecting bars on both sides are respectively attached to the two sides of the outer surface of one of the rotating plates. The outer surfaces of two adjacent connecting bars are fixedly connected by a crossbar. A bolt is rotatably connected through the body of the crossbar. One end of the bolt is threadedly connected to the outer surface of one of the rotating plates.

[0008] Preferably, a telescopic rod is provided between the outer surfaces of the baffle and the connecting bar, the spring is sleeved on the outside of the telescopic rod, and universal joints are fixedly connected to both ends of the telescopic rod. One end of the universal joints on both sides is fixedly connected to the outer surfaces of the baffle and the connecting bar, respectively.

[0009] Preferably, a drive assembly is provided on the outside of one set of support plates. The drive assembly includes a piston rod. The piston end of the piston rod is fixedly connected to the outer surface of another set of support plates. An exhaust pipe is passed through the inside of the piston rod. A rotary cylinder is fixedly connected to one end of the exhaust pipe. An intake pipe is passed through the inside of the piston rod.

[0010] Preferably, the bottom of the base is provided with a sliding groove, a drive motor is fixedly connected inside the sliding groove, the output end of the drive motor is fixedly connected to a lead screw through a coupling, a slider is threaded through the outer surface of the lead screw, the outer surface of the slider is slidably connected to the inside of the sliding groove, and the bottom of the slider is fixedly connected to the outer surface of the rotary cylinder.

[0011] Preferably, a cleaning unit is provided on the outside of the exhaust pipe. The cleaning unit includes an air groove, which is formed on the body of the exhaust pipe and is in a through state. A ring is connected inside the air groove. The ring is fitted on the outside of the exhaust pipe. Fixed rings are movably connected to both sides inside the ring. Both sides of the fixed ring are fixed to the outer surface of the exhaust pipe. A connecting pipe is connected through the inside of the ring.

[0012] Preferably, one end of the connecting pipe is connected to a fixed box, the outer surface of the fixed box is fixedly connected to the outer surface of the rotary cylinder, the top of the fixed box is provided with two inclined surfaces, each of the two inclined surfaces is provided with a through groove, and each of the two inclined surfaces is fixedly connected with a cover plate by a rubber strip.

[0013] Beneficial effects

[0014] This invention provides an adjustable photovoltaic mounting bracket. Compared with the prior art, it has the following advantages:

[0015] (1) By setting an adjustment mechanism, the photovoltaic panel is embedded in the surface of the rotating plate, and the two rotating plates are rotated and overlapped in a windy environment to protect the photovoltaic panel, thereby avoiding the problem of the photovoltaic panel being exposed to the outside and damaged by flying sand and stones, thus reducing the probability of photovoltaic panel damage and extending the service life of the photovoltaic panel, and also reducing the maintenance cost of the photovoltaic panel.

[0016] (2) By setting up protective components, the photovoltaic panel can be protected by the baffle and spring when the rotating plate is folded to buffer the external impact and avoid damage to the photovoltaic panel caused by the vibration of the rotating plate. At the same time, the damage of the rotating plate will also prevent the photovoltaic panel from being affected by the folding and extension adjustment of the photovoltaic panel, thereby further improving the safety of the photovoltaic panel.

[0017] (3) By setting up a drive component, the sliding of the slider, the extension and retraction of the piston rod and the rotation of the rotary cylinder can not only drive the rotating plate to fold to protect the photovoltaic panel, but also adjust the orientation angle of the photovoltaic panel to improve the light-gathering efficiency and facilitate the cleaning of the surface of the photovoltaic panel, so that the photovoltaic panel can be used effectively and safely.

[0018] (4) By setting up a cleaning unit, the internal air is discharged through the air groove, ring and air pipe by adjusting the retraction of the piston rod, thereby cleaning the inside of the slide groove, which facilitates the smoothness of the slide and avoids the problem of slide wear. At the same time, by tilting the through groove and pushing the cover plate to rotate when the air is discharged, the cleaning area can be increased, so as to improve the cleaning effect inside the slide groove. Attached Figure Description

[0019] Figure 1 This is a perspective view of the external structure of the present invention;

[0020] Figure 2 This is a perspective view of the external structure of the rotating plate of the present invention;

[0021] Figure 3 This is a perspective view of the external structure of the baffle of the present invention;

[0022] Figure 4 This is a perspective view of the external structure of the lead screw of the present invention;

[0023] Figure 5 This is a perspective view of the external structure of the ring sleeve of the present invention.

[0024] In the diagram: 1. Base; 2. Rotating plate; 3. Protective assembly; 31. Baffle; 32. Spring; 33. Connecting bar; 34. Crossbar; 35. Bolt; 36. Telescopic rod; 37. Universal joint; 4. Rotating rod; 5. Support plate; 6. Drive assembly; 61. Piston rod; 62. Exhaust pipe; 63. Cleaning unit; 631. Air groove; 632. Ring sleeve; 633. Fixed ring; 634. Connecting pipe; 635. Fixed box; 636. Through groove; 637. Rubber strip; 638. Cover plate; 64. Rotary cylinder; 65. Air inlet pipe; 66. Slide groove; 67. Drive motor; 68. Lead screw; 69. Slider; 7. Groove; 8. Photovoltaic panel; 9. Column groove; 10. Hinge; 11. Waterproof elastic cloth; 12. Velcro. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Please see Figure 1-5 This invention provides a technical solution: an adjustable photovoltaic mounting bracket.

[0027] The system includes a base 1, which is mounted on the ground via a column. Preferably, the column is rotatable to ensure the photovoltaic panel 8 always faces the sun, thus improving power generation efficiency. An adjustment mechanism is located on the outside of the base 1. This mechanism includes two rotating plates 2, each with a rotating rod 4 fixedly connected to its body. Each rotating rod 4 has a set of support plates 5 rotatably connected to its end. The two sets of support plates 5 are staggered to facilitate folding of the two rotating plates 2. The outer surface of the other support plate 5 is fixedly connected to the outer surface of the base 1. On the outer surface of each rotating plate 2, grooves 7 are provided on the sides that are close to each other. Photovoltaic panels 8 are installed inside the grooves 7 on both sides. The photovoltaic panels 8 are embedded into the surface of the rotating plate 2 through the grooves 7, which can avoid the problem of sand and gravel accumulation caused by outward protrusion. The outer surface of each rotating plate 2 is provided with column grooves 9. The column grooves 9 are provided with hinges 10. The hinges 10 are made of column-shaped straight hinges, which can protect the two rotating plates 2 when they are extended parallel, thereby preventing the external environment from damaging the hinges 10 when the photovoltaic panels 8 are in normal use, and improving the rotation and folding effect of the rotating plates 2.

[0028] A waterproof elastic cloth 11 is movably connected to the outer surface of the hinge 10. The waterproof elastic cloth 11 can cover the exposed hinge 10 when the rotating plate 2 is folded by deformation, so as to prevent external impurities from corroding the hinge 10. Velcro 12 is fixedly connected to both sides of the outer surface of the waterproof elastic cloth 11. Velcro 12 can facilitate the quick installation and removal of the waterproof elastic cloth 11, thereby facilitating the maintenance and replacement of the hinge 10. The outer surfaces of the Velcro 12 on both sides are fixedly connected to the outer surfaces of the two rotating plates 2 respectively.

[0029] By setting up an adjustment mechanism, the photovoltaic panel 8 is embedded in the surface of the rotating plate 2, and the two rotating plates 2 are rotated and overlapped in windy conditions to protect the photovoltaic panel 8. This avoids the problem of the photovoltaic panel 8 being exposed to the outside and damaged by flying sand and stones, thereby reducing the probability of damage to the photovoltaic panel 8, extending the service life of the photovoltaic panel 8, and also reducing the maintenance cost of the photovoltaic panel 8.

[0030] One of the rotating plates 2 is provided with a protective component 3 on its exterior. The protective component 3 includes a baffle 31, which can shield the outer rotating plate 2 when folded to prevent it from being damaged by impact from external objects. The baffle 31 is located on the exterior of one of the rotating plates 2. Springs 32 are fixedly connected to both sides of the baffle 31. The springs 32 offset the external impact force through their own elasticity. A connecting bar 33 is fixedly connected to one end of each of the two springs 32. The connecting bar 33 is used to support the springs 32 and the baffle 31. The outer surfaces of the two connecting bars 33 are respectively attached to the two sides of the outer surface of one of the rotating plates 2. The outer surfaces of two adjacent connecting bars 33 are fixedly connected by a crossbar 34. The crossbar 34 can connect all the connecting bars 33 together for easy overall installation and fixation. A bolt 35 is rotatably connected through the body of the crossbar 34. One end of the bolt 35 is threadedly connected to the outer surface of one of the rotating plates 2.

[0031] A telescopic rod 36 is provided between the outer surfaces of the baffle 31 and the connecting bar 33. The telescopic rod 36 can facilitate the movement of the baffle 31 by telescopic movement and can also shape the spring 32 to prevent the spring 32 from deforming and bending, which would affect the shock absorption effect. The spring 32 is sleeved on the outside of the telescopic rod 36. Both ends of the telescopic rod 36 are fixedly connected to universal joints 37. The universal joints 37 can facilitate the movement of the baffle 31 after it has withstood impact forces from multiple directions. One end of the universal joints 37 on both sides is fixedly connected to the outer surfaces of the baffle 31 and the connecting bar 33, respectively.

[0032] By setting up the protective component 3, and utilizing the baffle 31 and spring 32, the photovoltaic panel 8 can be protected by an outer layer when the rotating plate 2 is folded to buffer external impacts, thus preventing damage to the photovoltaic panel 8 caused by the vibration of the rotating plate 2. At the same time, it also prevents damage to the rotating plate 2 from affecting the folding and extension adjustment of the photovoltaic panel 8, thereby further improving the safety of the photovoltaic panel 8.

[0033] One set of support plates 5 is equipped with a drive assembly 6 on its exterior. The drive assembly 6 includes a piston rod 61. The piston rod 61 adjusts the extension and retraction of the piston by the air pressure inside. The piston end of the piston rod 61 is fixedly connected to the outer surface of another set of support plates 5. An exhaust pipe 62 runs through the inside of the piston rod 61. The exhaust pipe 62 supports the piston rod 61 and facilitates the discharge of air from inside the piston rod 61. A solenoid valve (not shown in the figure) is installed on the exhaust pipe 62 to control its opening and closing. A rotary cylinder 64 is fixedly connected to one end of the exhaust pipe 62. The rotary cylinder 64 is electrically connected to an external control circuit. An air inlet pipe 65 runs through the inside of the piston rod 61. The air inlet pipe 65 is connected to the outside through a filter screen. The other end is connected to the inside of the piston rod 61 through a one-way valve. An air pump is installed inside the air inlet pipe 65 to pressurize the inside of the piston rod 61. At the same time, the air pump is electrically connected to an external control circuit.

[0034] The bottom of the base 1 is provided with a groove 66. The groove 66 has a dovetail-shaped cross-section and the opening faces downward, which can prevent impurities from accumulating inside the groove 66. A drive motor 67 is fixedly connected inside the groove 66. The drive motor 67 is made of servo motor and is electrically connected to an external control circuit. The output end of the drive motor 67 is fixedly connected to a lead screw 68 through a coupling. A slider 69 is threaded through the outer surface of the lead screw 68. The cross-sectional area of ​​the slider 69 is adapted to the cross-sectional area of ​​the groove 66. The outer surface of the slider 69 is slidably connected to the inside of the groove 66. The bottom of the slider 69 is fixedly connected to the outer surface of the rotary cylinder 64.

[0035] By setting up the drive assembly 6, the sliding of the slider 69, the extension and retraction of the piston rod 61, and the rotation of the rotary cylinder 64 can not only drive the rotating plate 2 to fold to protect the photovoltaic panel 8, but also adjust the orientation angle of the photovoltaic panel 8, thereby improving the light-gathering efficiency and facilitating the cleaning of the surface of the photovoltaic panel 8, thus enabling the photovoltaic panel 8 to be used effectively and safely.

[0036] A cleaning unit 63 is provided on the outside of the exhaust pipe 62. The cleaning unit 63 includes an air groove 631, which is formed on the body of the exhaust pipe 62 and is in a through state. Multiple air grooves 631 are arranged at equal angles around the outer arc surface of the exhaust pipe 62 to improve exhaust efficiency. The inside of the air groove 631 is connected to a ring 632, which is fitted on the outside of the exhaust pipe 62. Both sides of the inside of the ring 632 are movably connected to a fixed ring 633. The fixed ring 633 can axially limit the ring 632, and the two can be connected by a rotating seal to improve the sealing of the exhaust. Both fixed rings 633 are fixed on the outer surface of the exhaust pipe 62. A connecting pipe 634 is connected through the inside of the ring 632.

[0037] One end of the connecting pipe 634 is connected to a fixed box 635. The fixed box 635 is hollow inside. The outer surface of the fixed box 635 is fixedly connected to the outer surface of the rotary cylinder 64. The top of the fixed box 635 is provided with two inclined surfaces, which face the two inclined inner walls of the slide groove 66 respectively. A through groove 636 is opened on each of the two inclined surfaces. The through groove 636 on the inclined surface can increase the cleaning range. A cover plate 638 is fixedly connected to each of the two inclined surfaces by a rubber strip 637. The rubber strip 637 can be replaced with a hinge. The cover plate 638 is rotated upward by the rubber strip 637 to open and close, which can not only increase the cleaning range, but also facilitate automatic reset to cover the through groove 636. At the same time, the cover plate 638 can adopt a sealing measure (such as a refrigerator door sealing structure) to move and seal with the inclined surface.

[0038] By setting up the cleaning unit 63, the internal air of the piston rod 61 is discharged through the air groove 631, the ring 632 and the connecting pipe 634 by adjusting the retraction of the piston. This allows the inside of the slide groove 66 to be cleaned, thereby improving the smoothness of the sliding of the slider 69 and avoiding wear on the slider 69. At the same time, by tilting the through groove 636 and pushing the cover plate 638 to rotate when the air is discharged, the cleaning area can be increased to improve the cleaning effect on the inside of the slide groove 66.

[0039] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0040] Working principle: When the environment is stable, the output end of the rotary cylinder 64 drives the piston rod 61 to rotate through the exhaust pipe 62, so that the piston end of the piston rod 61 drives the outer rotating plate 2 to move synchronously through a set of support plates 5 and rotating rod 4. When the piston rod 61 rotates to be perpendicular to the base 1, the rotating plate 2 is perpendicular to the other rotating plate 2 through the action of the hinge 10. Then the air pump works to pump outside air into the piston rod 61 through the filter and air inlet pipe 65. Due to the internal pressurization, the piston slides outward, thereby pushing the rotating plate 2 connected to it to move. Through the action of the hinge 10 and another set of support plates 5 and rotating rod 4, the other rotating plate 2 moves synchronously, so that the two rotating plates 2 are parallel to each other and extend outward. At the same time, one side of the surface of the two rotating plates 2 protects the hinge 10 by sticking together, and the two, the piston rod 61 and the base 1 form a triangular relationship.

[0041] When the two rotating plates 2 are extended and parallel, the drive motor 67 drives the lead screw 68 to rotate. Through the threaded connection between the lead screw 68 and the slider 69, the slider 69 slides inside the slide groove 66. Through the action of the rotary cylinder 64 and the exhaust pipe 62, the piston rod 61 is driven to follow the movement. At the same time, the air pressure inside the piston rod 61 is adjusted by pumping air or exhausting air to control the extension and retraction of the piston, so that the two rotating plates 2 follow the movement and rotate around another rotating rod 4 as the axis, thereby adjusting the orientation angle of the photovoltaic panels 8 on the surface of the two rotating plates 2 so that the photovoltaic panels 8 are facing the sunlight, thereby improving the power generation efficiency.

[0042] When the piston rod 61 retracts, the solenoid valve on the exhaust pipe 62 opens, and excess air is discharged into the solid box 635 through the exhaust pipe 62, air groove 631, ring sleeve 632, and connecting pipe 634. When the air pressure inside the solid box 635 is lower than the weight of the cover plate 638, the air is stored inside the solid box 635. When the air pressure is greater than the weight of the cover plate 638, the air inside the solid box 635 pushes open the cover plate 638. The air pressure of the discharged airflow (which can be controlled by the discharge airflow rate and discharge speed inside the piston rod 61) is also controlled. (It can be controlled with the assistance of an air pump) The angle of rotation of the cover plate 638 around the rubber strip 637 can be controlled to guide the exhaust gas, so that the airflow can blow and clean the inclined inner wall of the slide groove 66 on one side and a part of the area above the inner wall. At the same time, with the movement of the slider 69, the airflow discharged from the two side channels 636 can thoroughly clean the inside of the slide groove 66, thereby keeping the area within the range of motion of the slider 69 clean, avoiding the accumulation of impurities that affect the smoothness of the movement of the slider 69, and avoiding the problem of the slider 69 being corroded.

[0043] When the environment is harsh, the two rotating plates 2 are folded together by the drive of the slider 69, the rotary cylinder 64 and the piston rod 61, and the two photovoltaic panels 8 are wrapped between them to protect the photovoltaic panels 8. At the same time, when the two are stacked, the waterproof elastic cloth 11 is stretched synchronously to fit against one side of the outer surface of the two rotating plates 2 and the outside of the hinge 10, thereby protecting the hinge 10. Meanwhile, the baffle 31 blocks the outside of the upper rotating plate 2. When a foreign object approaches the rotating plate 2, it pushes the baffle 31 to move by contacting the baffle 31. The movement of the baffle 31 compresses or stretches the spring 32 and the telescopic rod 36. At the same time, the universal joints 37 at both ends of the telescopic rod 36 make it move synchronously with the baffle 31. The spring 32 cancels the force of the foreign object with its own elasticity to avoid the photovoltaic panels 8 being damaged by the impact of the rotating plate 2.

[0044] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adjustable photovoltaic mounting bracket, comprising a base (1), characterized in that: An adjustment mechanism is provided on the outside of the base (1). The adjustment mechanism includes two rotating plates (2). The bodies of the two rotating plates (2) are fixedly connected to rotating rods (4). The ends of the two rotating rods (4) are rotatably connected to a set of support plates (5). The outer surface of the support plate (5) on the other side is fixedly connected to the outer surface of the base (1). The outer surfaces of the two rotating plates (2) are provided with grooves (7) on the side that are close to each other. Photovoltaic panels (8) are provided inside the grooves (7) on both sides. The outer surfaces of the two rotating plates (2) are provided with column grooves (9). The column grooves (9) are provided with hinges (10). A protective component (3) is provided on the outside of one of the rotating plates (2). The protective component (3) includes a baffle (31). The baffle (31) is disposed on the outside of one of the rotating plates (2). Springs (32) are fixedly connected to both sides of the baffle (31). A connecting bar (33) is fixedly connected to one end of each of the springs (32). The outer surfaces of the connecting bars (33) on both sides are respectively attached to the two sides of the outer surface of one of the rotating plates (2). The outer surfaces of two adjacent connecting bars (33) are fixed by a crossbar (34). The body of the crossbar (34) is rotatably connected by a bolt (35). One end of the bolt (35) is threadedly connected to the outer surface of one of the rotating plates (2). A telescopic rod (36) is provided between the outer surfaces of the baffle (31) and the connecting bar (33). The spring (32) is sleeved on the outside of the telescopic rod (36). Both ends of the telescopic rod (36) are fixedly connected to universal joints (37). One end of the universal joints (37) on both sides is fixedly connected to the outer surfaces of the baffle (31) and the connecting bar (33), respectively. One of the support plates (5) is provided with a drive assembly (6) on its exterior. The drive assembly (6) includes a piston rod (61). The piston end of the piston rod (61) is fixedly connected to the outer surface of another support plate (5). An exhaust pipe (62) is connected through the interior of the piston rod (61). A rotary cylinder (64) is fixedly connected to one end of the exhaust pipe (62). An air inlet pipe (65) is connected through the interior of the piston rod (61). A sliding groove (66) is provided at the bottom of the base (1). A drive motor (67) is fixedly connected inside the sliding groove (66). A lead screw (68) is fixedly connected to the output end of the drive motor (67) through a coupling. A slider (69) is threaded through the outer surface of the lead screw (68). The outer surface of the slider (69) is slidably connected to the interior of the sliding groove (66). The bottom of the slider (69) is fixedly connected to the outer surface of the rotary cylinder (64). A cleaning unit (63) is provided on the outside of the exhaust pipe (62). The cleaning unit (63) includes an air groove (631). The air groove (631) is opened on the body of the exhaust pipe (62) and is in a through state. The inside of the air groove (631) is connected to a ring (632). The ring (632) is sleeved on the outside of the exhaust pipe (62). Both sides of the inside of the ring (632) are movably connected to a fixed ring (633). Both sides of the fixed ring (633) are fixed on the outer surface of the exhaust pipe (62). The inside of the ring (632) is connected to a connecting pipe (634).

2. The adjustable photovoltaic mounting bracket according to claim 1, characterized in that: The outer surface of the hinge (10) is movably connected to a waterproof elastic cloth (11), and both sides of the outer surface of the waterproof elastic cloth (11) are fixedly connected to Velcro (12), and the outer surfaces of the Velcro (12) on both sides are fixedly connected to the outer surfaces of the two rotating plates (2).

3. The adjustable photovoltaic mounting bracket according to claim 1, characterized in that: One end of the connecting pipe (634) is connected to a fixed box (635). The outer surface of the fixed box (635) is fixedly connected to the outer surface of the rotary cylinder (64). The top of the fixed box (635) is provided with two inclined surfaces. A through groove (636) is opened on each of the two inclined surfaces. A cover plate (638) is fixedly connected to each of the two inclined surfaces by a rubber strip (637).

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