Photovoltaic tracking support gale protection device

Abstract

The invention relates to the technical field of photovoltaic tracking supports, and discloses a photovoltaic tracking support gale protection device which comprises a main beam, a cross beam is fixedly erected on the main beam, a driving device is arranged on the main beam, a beam frame is fixedly installed on the cross beam, the main beam enables the beam frame to rotate through the driving device, and a photovoltaic panel is fixedly arranged on the beam frame. Two first damping springs are fixedly arranged on the main beam, the main beam and the driving equipment are fixedly connected through the two first damping springs, the two first damping springs are symmetrically designed, a damping frame is arranged on the cross beam, a damper is arranged on the main beam, and a pre-damping assembly is arranged on the damping frame. According to the invention, through the pre-damping assembly, under the conditions of strong wind weather, turbulent wind and high-frequency jittering of the main beam, the mode that a damper is directly used for damping in a conventional photovoltaic array is replaced, and the conditions that the use frequency of the damper is increased, the service life is shortened and the maintenance cost is increased due to continuous high-frequency work of the damper are avoided.

Description

Technical Field

[0001] This invention belongs to the field of photovoltaic tracking bracket technology, and specifically relates to a photovoltaic tracking bracket wind protection device. Background Technology

[0002] To improve power generation efficiency, single-axis or dual-axis photovoltaic tracking brackets with automatic sun tracking function have become the mainstream choice for ground power stations, especially those in complex terrains such as mountains and hills.

[0003] Existing photovoltaic tracking brackets experience a greater absolute wind speed difference between the air and near-ground surfaces under strong wind conditions. This intense shearing effect acts like a "mixer," easily generating and shedding vortices at the interface layer, thus creating turbulence. Under the influence of common small-amplitude, high-frequency turbulent winds, the support structure will experience continuous micro-vibrations. Under this condition, the existing direct-connection damper will undergo endless micro-stroke reciprocating motion with the support structure. This ineffective work not only fails to significantly improve the wind resistance effect, but also rapidly consumes the service life of the internal seals and oil of the damper, leading to premature failure and significantly increasing the maintenance frequency and replacement cost of the power station. Summary of the Invention

[0004] This invention provides a high-wind protection device for photovoltaic tracking brackets, solving the technical problems of photovoltaic tracking brackets in related technologies.

[0005] This invention provides a high-wind protection device for a photovoltaic tracking bracket, comprising a main beam, a crossbeam fixedly mounted on the main beam, a driving device mounted on the main beam, a beam frame fixedly mounted on the crossbeam, the main beam rotating via the driving device, a photovoltaic panel fixedly mounted on the beam frame, two damping springs fixedly mounted on the main beam, the main beam and the driving device being fixedly connected via the two damping springs, the two damping springs being symmetrically designed, a damping frame mounted on the crossbeam, a damper mounted on the main beam, a pre-damping assembly mounted on the damping frame, the pre-damping assembly comprising a bellows, a second damping spring sleeved on the outer surface of the bellows, the top end of the second damping spring being fixedly connected to the top end of the outer surface of the bellows, the second damping spring being fixedly connected to the bottom end of the outer surface of the bellows, the top end of the bellows being rotatably connected to the damping frame, and the bottom end of the bellows being rotatably connected to the main beam.

[0006] In a preferred embodiment, the damper is disposed inside the bellows, and the fixing part of the damper is fixedly connected to the bottom of the inner surface of the bellows.

[0007] In a preferred embodiment, air inlets are fixedly provided at the top and bottom of the outer surface of the bellows, and filter screens are provided at the ends of the air inlets.

[0008] In a preferred embodiment, the bellows is initially in a contracted state, and the length of the bellows in its initial state is greater than the length of the damper in its initial state. Multiple sets of arc blocks are arranged around the inner circumference of the bellows, and a limiting ring is fixedly sleeved on the outer surface of the damping part of the damper. The limiting ring works in conjunction with the multiple sets of arc blocks, and the arc blocks can push the limiting ring upward.

[0009] In a preferred embodiment, the arc block is located below the limiting ring, the horizontal position of the limiting ring is the same as the horizontal position of the corrugated pipe crest, and the outer diameter of the limiting ring is larger than the inner diameter of the corrugated pipe trough.

[0010] In a preferred embodiment, a return spring is sleeved on the outer surface of the damper's shock-absorbing part. The top of the return spring is fixedly connected to the outer surface of the limiting ring, and the bottom of the return spring is fixedly connected to the outer surface of the damper's fixing part.

[0011] In a preferred embodiment, a reserved groove is provided between the inside of the bellows and the damper, and a pad is provided in the reserved groove. The pad is fixedly connected to the top end of the inner surface of the bellows.

[0012] In a preferred embodiment, the maximum elongation of the damper's shock-absorbing section is greater than the length of the reserved groove, the side of the pad contacts the inner wall of the corrugated pipe's initial crest, and the pad is a soft rubber block.

[0013] In a preferred embodiment, the horizontal position of the pad is greater than the horizontal position of the air inlet, and the inside of the pad is hollow.

[0014] In a preferred embodiment, the edge of the limiting ring is rounded, and the horizontal position of the arc block is greater than the horizontal position of the damper fixing part.

[0015] The beneficial effects of this invention are: This invention replaces the conventional method of using dampers for vibration reduction in photovoltaic arrays when turbulent winds cause high-frequency vibration of the main beam, by using a pre-damping component. This avoids the increased use and reduced lifespan of the dampers due to continuous high-frequency operation, thus avoiding increased maintenance costs.

[0016] This invention places the damper inside a bellows. In windy weather, sand and dust from the mountains are carried into the photovoltaic array by the wind. The bellows separates the damper from the outside air containing sand and dust, reducing the possibility of the damper's service life being reduced or even damaged due to sand and dust accumulation.

[0017] This invention utilizes air inlets and filters. By adjusting the internal gas flow during the expansion and contraction of the corrugated pipe, air is blown out of the filter screen through blowing and suction, ensuring the normal operation of the corrugated pipe and extending the maintenance cycle of the filter screen, thus improving the service life of the corrugated pipe.

[0018] This invention utilizes a corrugated pipe, an arc block, a limiting ring, and a damper. In windy weather, when the photovoltaic array is subjected to strong winds, gusts, or continuous gales, and the impact exceeds the damping effect of the corrugated pipe, the damper begins to work. In this way, in conjunction with the damping spring, it reduces the swaying of the photovoltaic panels under the influence of strong winds, gusts, or continuous gales, thereby improving the stability of the photovoltaic array and enhancing its applicability in severe weather.

[0019] This invention addresses the issue of instantaneous and massive wind loads that can occur during strong winds and extreme gusts, causing the main beam to accelerate and the damper's shock absorber section to momentarily exceed its rated speed. By using a flexible impact method instead of a rigid impact method, the damper's shock absorber section rapidly extends and instantly strikes the part of the bellows that contacts the shock absorber frame, thus reducing the likelihood of damage to the damper's shock absorber section during rigid impacts. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 This is a bottom view of the overall structure of the present invention.

[0022] Figure 3 This is an exploded view of the main beam structure of the present invention.

[0023] Figure 4 This is a schematic diagram of the combination of the main beam and the pre-damping assembly of the present invention.

[0024] Figure 5 This is a cross-sectional view of the internal structure of the bellows of the present invention.

[0025] Figure 6 For the present invention Figure 5 Enlarged view of the structure at point A in the middle.

[0026] Figure 7 For the present invention Figure 6 Enlarged view of the structure at point B.

[0027] Figure 8 This is a schematic diagram of the combined internal structure of the bellows of the present invention.

[0028] Figure 9 This is a cross-sectional view of the internal structure of the bellows of the present invention.

[0029] Figure 10 This is a schematic diagram of the top part of the bellows structure of the present invention.

[0030] In the diagram: 1. Main beam; 2. Damper; 3. Pre-damping assembly; 4. Air inlet; 5. Arc block; 6. Limiting ring; 7. Return spring; 8. Pad block; 101. Crossbeam; 102. Drive equipment; 103. Beam frame; 104. Photovoltaic panel; 105. Damping spring one; 106. Damping frame; 301. Corrugated pipe; 302. Damping spring two; 303. Reserved groove; 401. Filter screen. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0032] Example 1 like Figure 1 , Figure 2 and Figure 3 As shown, a photovoltaic tracking bracket wind protection device includes a main beam 1, a crossbeam 101 fixedly mounted on the main beam 1, a drive device 102 mounted on the main beam 1, and a beam frame 103 fixedly mounted on the crossbeam 101. The main beam 1 rotates the beam frame 103 via the drive device 102. A photovoltaic panel 104 is fixedly mounted on the beam frame 103. Two damping springs 105 are fixedly mounted on the main beam 1, and the main beam 1 and the drive device 102 are fixedly connected by the two damping springs 105. The two damping springs 105 are symmetrically designed. A damping frame 301 is installed on the crossbeam 101, a damper 2 is installed on the main beam 1, and a pre-damping assembly 3 is installed on the damping frame 301. The pre-damping assembly 3 includes a bellows 301, and a second damping spring 302 is sleeved on the outer surface of the bellows 301. The top end of the second damping spring 302 is fixedly connected to the top end of the outer surface of the bellows 301, and the bottom end of the second damping spring 302 is fixedly connected to the bottom end of the outer surface of the bellows 301. The top end of the bellows 301 is rotatably connected to the damping frame 301, and the bottom end of the bellows 301 is rotatably connected to the main beam 1.

[0033] Before using the equipment, it is necessary to check whether the drive device 102 on the main beam 1 can be used normally, whether the beam frame 103 on the cross beam 101 has been fixed with screws, and then check whether the tilt angle of each photovoltaic panel 104 is the same. Due to the presence of the drive device 102, the main beam 1 can be set on a hillside with a gentle slope. According to the slope of the hillside, the drive device 102 can be used to rotate the beam frame 103 on the cross beam 101, thereby adjusting the angle of the photovoltaic panel 104 to the optimal angle for absorbing solar energy. The pitch angle of the beam frame 103 and the photovoltaic panel 104 can be adjusted by the drive device 102 to adapt to the terrain and the position of the sun in the mountains. Two symmetrically arranged shock-absorbing springs 105 are connected between the main beam 1 and the drive device 102 to isolate the high-frequency vibration of the main beam 1 and maintain the relative stability of the drive device 102. When there is turbulent wind in the air, the turbulent wind will cause the main beam 1 to vibrate continuously at high frequency. Under the action of the damping spring 105, the drive device 102 is almost stationary relative to the ground. At this time, the pre-damping component 3 will replace the damper 2 to prevent the damper 2 from working under such extreme conditions. Through the damping effect of the damping spring 302, the impact of the drive device 102, the crossbeam 101 and the photovoltaic panel 104 caused by the swaying of the main beam 1 is reduced. Through the contraction and extension of the bellows 301, the impact caused by the swaying of the main beam 1 is further reduced. The pre-damping component 3 can replace the function of the damper 2 under the condition of continuous small amplitude swaying of the main beam 1, avoiding the situation where the damper 2 is used more frequently and its service life is reduced due to continuous high frequency operation, thus increasing maintenance costs. The entire device is integrated into the main kinematic pair of the photovoltaic tracking bracket. The main beam 1 is fixed to the foundation, and the crossbeam 101 is rotatably connected through the drive device 102. The damping spring 105 is responsible for isolating the vibration of the main beam. The bellows 301 and the damping spring 302 of the pre-damping component 3 form a connection between the crossbeam 101 and the main beam 1 through the flexible connecting rod of the damping frame 301. The damper 2 is installed inside the bellows 301, with its cylinder fixed at the bottom and the piston rod facing upward. Initially, the bellows 301 is in a semi-retracted state, and the arc block 5 on its inner wall is located below the piston rod upper limit ring 6. The two are not in contact, and the damper 2 is in a non-working preparatory state. It should be noted here that the drive device 102 can be a motor or an electronic shaft; When encountering turbulent winds that cause the main beam 1 to vibrate continuously at high frequency and small amplitude, the pre-damping component 3 actively works as the first line of defense for damping. The bellows 301 absorbs and dissipates low-energy, high-frequency vibrations efficiently through its own elastic expansion and contraction and the deformation of the damping spring 302. At this time, since the vibration amplitude does not exceed the threshold, the arc block 5 on the inner wall of the bellows 301 does not contact the limiting ring 6 on the damping part of the damper 2. Therefore, the damper 2 is in a static or slightly moving state and is effectively protected, avoiding unnecessary wear and fatigue accumulation. When the main beam 1 experiences high-frequency, small-amplitude vibrations due to turbulent winds, the energy is absorbed and dissipated through the elastic expansion and contraction of the bellows 301 and the deformation of the damping spring 302. At this time, the relative displacement between the main beam 1 and the crossbeam 101 is small, and the arc block 5 deforms slightly with the bellows 301, but not enough to contact the limiting ring 6. The piston rod of the damper 2 has no movement or only very slight movement, thus achieving perfect protection.

[0034] like Figure 5 and Figure 7 As shown, the damper 2 is disposed inside the bellows 301, and the fixing part of the damper 2 is fixedly connected to the bottom of the inner surface of the bellows 301.

[0035] In windy weather, sand and dust from the mountains are carried into the photovoltaic array by the wind. If the damper 2 is directly exposed to the air, since the damper 2 commonly used in photovoltaic arrays is a hydraulic damper 2, oil will inevitably adhere to the surface of the damping end of the damper 2. The sand and dust brought by the wind will also adhere to the damping end of the damper 2. At the same time, during each operation, this part of the sand and dust will be carried into the interior of the damper 2, and then rub against the piston chamber of the damper 2. After long-term use, the internal piston chamber sealing of the damper 2 will be severely damaged, and even the oil inside the oil reservoir of the damper 2 will be contaminated, resulting in a significant reduction in the service life of the damper 2. However, the damper 2 is set inside the bellows 301, which will isolate the external sand and dust, reducing the reduction in the service life of the damper 2 or even damage caused by sand and dust adhesion. It is worth noting that the bellows 301 has a low cost, and when replacing it, the bellows 301 and damper 2 can be directly removed. The damper 2 can also be fine-tuned, inspected and repaired, so that the damper 2 can continue to be used. Compared with the traditional design of photovoltaic arrays in the mountains, it has certain advantages in terms of maintenance costs.

[0036] like Figure 5 and Figure 7 As shown, air inlets 4 are fixedly provided at the top and bottom of the outer surface of the corrugated pipe 301, and filter screens 401 are provided at the ends of the air inlets 4.

[0037] Because the bellows 301 has a filter 401 at the air inlet 4, it can ensure that while the bellows 301 achieves its shock absorption effect, it prevents external dust from entering the interior, thus affecting the normal use of the damper 2. This ensures the effectiveness of the damper 2 and effectively extends its service life. Furthermore, since the bellows 301 has air inlets 4 at both the top and bottom, these two inlets 4 can serve as the air inlet and outlet of the bellows 301. Even if dust clogs the filter 401 when the bellows 301 is inlet, the bellows 301 will act as a backflow air mechanism when it is outlet, blowing away the dust and ensuring the normal use of the bellows 301. This also extends the maintenance cycle of the filter 401 on the bellows 301, further extending the service life of the bellows 301. The damper 2 is completely built into the bellows 301 to form a sealed cavity. The top and bottom of the bellows 301 are equipped with air ports 4 with filters 401. While ensuring the balance of air pressure inside and outside the cavity and reducing the resistance of the damper 2, it effectively isolates external sand and dust. The bidirectional design of the air ports 4 allows the airflow to backwash the filter 401, which has a self-cleaning function and extends the maintenance cycle. It should be noted that the presence of air inlet 4 means that even if a damper 2 is present inside the bellows 301, the pressure inside the bellows 301 will not change frequently. Under the condition of continuous high-frequency vibration of the main beam 1, the movement of the damper 2 is reduced, and the number of times the damper 2 moves is extremely small, which helps to improve the service life of the damper.

[0038] like Figure 5 As shown, the bellows 301 is initially in a contracted state. The length of the bellows 301 in its initial state is greater than the length of the damper 2 in its initial state. Multiple sets of arc blocks 5 are arranged around the inner wall of the bellows 301. A limiting ring 6 is fixedly sleeved on the outer surface of the damping part of the damper 2. The limiting ring 6 works in conjunction with the multiple sets of arc blocks 5. The arc blocks 5 can push the limiting ring 6 upward.

[0039] In windy weather, when the photovoltaic array is impacted by strong winds, gusts, or continuous gales, and the impact exceeds the damping effect of the bellows 301, the increased vibration causes the return spring 7 to extend and retract more violently. This results in an increased movement of the crossbeam 101 relative to the main beam 1, which in turn increases the extension and retraction of the bellows 301. The bottom of the bellows 301 is pulled by the crossbeam 101, causing it to elongate. After this elongation, the inner diameter at the crest of the bellows decreases, while the inner diameter at the trough increases. The elongated bellows 301, along with the arc block 5, moves upward relative to the limiting ring 6, gradually approaching and contacting it. Consequently, the arc block 5, along with the limiting ring 6, moves upward... Figure 5 As shown in the diagram, the limit ring 6 moves upward, causing the damping part of the damper 2 to extend. The damper 2 then begins to work, thereby reducing the swaying of the photovoltaic panel 104 under the influence of strong winds, gusts, or continuous strong winds, in conjunction with the damping spring 105, improving the stability of the photovoltaic matrix, and enhancing the applicability of the photovoltaic matrix in adverse weather conditions. When the wind intensifies, the main beam 1 and the crossbeam 101 undergo significant relative displacement. The bellows 301 is significantly stretched, and its inner diameter at the crest contracts, causing the arc block 5 to move upward. When the displacement reaches the design threshold, the arc block 5 contacts and pushes the limiting ring 6, forcing the piston rod of the damper 2 to extend. At this time, the powerful hydraulic damping force of the damper 2 is activated, working in conjunction with the shock-absorbing spring 105 to quickly suppress the large swaying of the structure and enter a highly efficient wind-resistant state. It should be noted that although the bellows 301 itself will deform, when the arc block 5 pushes the limit block to move upward, although the arc block 5 will deform slightly, it can still push the limit block to move upward. When the wind force increases and the vibration amplitude increases, exceeding the handling capacity of the pre-damping component 3 alone, the bellows 301 is stretched significantly, and its inner diameter at the crest contracts, causing the arc block 5 fixed to the inner wall to move upward. When the arc block 5 contacts and pushes the limiting ring 6, the damping part of the damper 2 is forcibly activated to extend and engage. The damper 2 then provides a strong damping force, which works in conjunction with the damping spring 105 to suppress the large swing of the main beam 1 and the photovoltaic panel 104, ensuring the stability of the overall structure under extreme wind loads.

[0040] like Figure 5 As shown, the arc block 5 is located below the limiting ring 6. The horizontal position of the limiting ring 6 is the same as the horizontal position of the corrugated pipe 301 at the crest. The outer diameter of the limiting ring 6 is larger than the inner diameter of the corrugated pipe 301 at the trough.

[0041] Since the arc block 5 is located below the limiting ring 6, under turbulent wind conditions, the bellows 301 cannot extend or retract sufficiently, and the arc block 5 cannot reach the position of the limiting ring 6 when it retracts. At this time, the damper 2 will hardly work, thus ensuring the operating range of the damper 2 and preventing the damper 2 from working under any shaking conditions, which would lead to overwork and a significant reduction in its service life. This makes the state transition process between the pre-damping component 3 and the damper 2 smoother, and the damping process more stable. It not only ensures the service life of the damper 2, but also ensures the high stability of the equipment itself under different scenarios.

[0042] like Figure 7 As shown, a return spring 7 is sleeved on the outer surface of the damping part of the damper 2. The top of the return spring 7 is fixedly connected to the outer surface of the limiting ring 6, and the bottom of the return spring 7 is fixedly connected to the outer surface of the fixing part of the damper 2.

[0043] Since the damper 2 used in the photovoltaic array is conventionally a hydraulic damper 2, the price of the hydraulic damper 2 is the most practical compared to other dampers 2. Furthermore, the damper 2 with a reset function is expensive and requires special customization. Therefore, the function of the reset spring 7 here is to achieve the reset effect of the damper 2, which has certain advantages in terms of maintenance and manufacturing costs.

[0044] like Figure 8 and Figure 10 As shown, a reserved groove 303 is provided between the inside of the bellows 301 and the damper 2. A pad 8 is provided in the reserved groove 303, and the pad 8 is fixedly connected to the top of the inner surface of the bellows 301.

[0045] In windy weather, extreme gusts may generate a sudden and enormous wind load, causing the main beam 1 to accelerate. This can cause the damper 2's vibration damping section to move at a speed that momentarily exceeds its rated value. In this case, the damper 2's vibration damping section will rapidly extend and instantly strike the part of the bellows 301 that contacts the damper frame 301, resulting in a rigid impact that can damage the damper 2's vibration damping section. When the damper 2's vibration damping section rapidly extends, it will impact the pad 8, replacing the rigid impact with a flexible impact method. This reduces the occurrence of the above situation, thereby ensuring the service life of the damper 2's vibration damping section. It can also reduce the possibility of the crossbeam 101 being deformed and damaged due to the hard impact of the damper 2's vibration damping section onto the crossbeam 101.

[0046] like Figure 10 As shown, the maximum elongation of the damping part of the damper 2 is greater than the length of the reserved groove 303. The side of the pad 8 is in contact with the inner wall of the corrugated pipe 301 in the initial state. The pad 8 is a soft rubber block.

[0047] As the bellows 301 elongates, the crests contract, compressing the pad 8 and causing it to deform. Figure 5 As shown, it extends downwards and approaches the damping part of damper 2 to reduce the movement distance of the damping part of damper 2, so as to buffer the impact force generated when the damping part of damper 2 extends rapidly and ensure the service life of crossbeam 101 and damping part of damper 2.

[0048] like Figure 10 As shown, the horizontal position of pad 8 is greater than that of air inlet 4, and the interior of pad 8 is hollow.

[0049] The hollow design of the pad 8 can reduce the degree of deformation of the pad 8 when it is impacted, thereby improving the buffering effect of the pad 8 itself and better buffering the impact force generated when the damper 2 shock absorber part rapidly extends, further ensuring the service life of the crossbeam 101 and the damper 2 shock absorber part. The inner side of the top of the bellows 301 is connected by the pad 8. When extreme gusts cause the damper 2 to extend at high speed, it will first impact the pad 8. The impact energy is absorbed by flexible deformation to avoid damage to the damper 2 or the crossbeam 101 by rigid collision. When the bellows 301 extends, it squeezes the pad 8 to pre-deform it, further shortening the impact distance and enhancing the buffering effect.

[0050] like Figure 8 As shown, the edge of the limiting ring 6 is rounded, and the horizontal position of the arc block 5 is greater than the horizontal position of the damper 2 fixing part.

[0051] In windy weather, when the extreme gusts stop, the arc block 5 may move upwards rapidly, and its horizontal position may exceed the horizontal position of the limit block. During the equipment reset process, which is also the self-maintenance process, in order to reduce the possibility of the arc block 5 getting stuck above the limit ring 6 due to the deformation of the inner wall of the bellows 301, the arc block 5 will slide off the rounded corner design of the limit ring 6 edge due to the rounded corner design, thereby achieving the reset and self-maintenance effect of the equipment, ensuring the service life of the pre-damping component 3 and the service life of the equipment under extremely changeable weather conditions; If an extreme gust of wind is encountered, the piston rod of the damper 2 may extend at excessive speed. The soft pad 8 set at the top will act as a last buffer, absorbing the remaining kinetic energy through its own compression deformation to prevent the piston rod from having a rigid collision with the crossbeam 101. After the wind load decreases, under the combined action of the tension of the return spring 7 and the damping spring 105 and the damping spring 2 302, the piston rod of the damper 2 retracts and the limiting ring 6 moves down. Even if the arc block 5 gets stuck above the limiting ring 6 due to abnormal conditions, the rounded corner design can make it slide down smoothly during the reset process, ensuring that the system can always return to the initial standby state. The damper 2 is fitted with a reset spring 7 to provide restoring force after a strong wind, so that the damper 2 can be reset. The edge of the limit ring 6 is designed with rounded corners to ensure that the arc block 5 can slide down smoothly from above and reset under abnormal conditions, preventing the internal structure of the equipment from jamming under complex working conditions, and improving the reliability and self-recovery capability of the device. When maintenance is required, the pre-damping assembly 3, including the bellows 301 and the internal damper 2, can be completely removed. The damper 2 can be disassembled and inspected in the clean environment inside the bellows 301, avoiding secondary pollution from sand and dust on site and greatly simplifying the maintenance process.

[0052] Working principle of the invention: (1) Normal operating conditions (no wind or light wind) The drive device 102 adjusts the tilt angle of the beam frame 103 and photovoltaic panel 104 according to the sun's position or terrain slope to achieve optimal light energy absorption; the damping spring 105 keeps the drive device 102 relatively stable and avoids the control accuracy being affected by the slight deformation of the support; the pre-damping component 3 is in the initial semi-contracted state and the damper 2 is not activated (the arc block 5 is located below the limit ring 6 and is not in contact); a sealed cavity is formed inside the bellows 301, and the damper 2 is effectively protected from external sand and dust pollution.

[0053] (2) Turbulent wind (high frequency small amplitude vibration) The main beam 1 experiences high-frequency, small-amplitude vibrations due to turbulent wind. The vibration is transmitted to the crossbeam 101 through the main beam 1, but the damping spring 105 isolates most of the high-frequency vibrations, keeping the drive device 102 stable. The pre-damping assembly 3 acts as the first line of defense: the bellows 301 absorbs vibration energy through elastic expansion and contraction; the damping spring 302 deforms synchronously, further dissipating the vibration. At this time, the relative displacement between the main beam 1 and the crossbeam 101 is small, the expansion and contraction of the bellows 301 is limited, and the arc block 5 does not touch the limit ring 6. The damper 2 remains stationary or only slightly moves, avoiding ineffective wear and extending its service life. The filter 401 on the air inlet 4 prevents dust from entering, and the bidirectional airflow design has a self-cleaning function, extending the maintenance cycle.

[0054] (3) Strong winds or gusts (large-amplitude low-frequency vibrations) When the wind force increases, the main beam 1 and the crossbeam 101 undergo a large relative displacement; the bellows 301 is significantly stretched, its inner diameter at the crest shrinks and its inner diameter at the trough expands; the arc block 5 fixed to the inner wall of the bellows moves upward with the bellows, and when the displacement reaches the design threshold, the arc block 5 contacts and pushes the limiting ring 6 to move upward; the limiting ring 6 drives the piston rod of the damper 2 to extend, and the damper 2 is forcibly activated; At this time, the damper 2 provides a strong hydraulic damping force, which works in conjunction with the shock absorber spring 105 to quickly suppress the large swing of the photovoltaic panel 104 and improve the system's wind resistance stability.

[0055] (4) Extreme gusts (high-speed impact) If a sudden extreme gust of wind is encountered, the piston rod of the damper 2 may extend at excessive speed. Before it is fully extended, the piston rod first impacts the top soft rubber pad 8. The pad 8 is a hollow soft structure that absorbs the impact kinetic energy through flexible deformation to avoid rigid collision. At the same time, when the bellows 301 extends, it will squeeze the pad 8, causing it to pre-deform and move downward, shortening the impact distance and enhancing the buffering effect. Effectively prevents damage to the damper 2 shock absorber or the crossbeam 101 due to hard impact.

[0056] (5) After the wind weakens As the wind load decreases, the system begins to reset: the reset spring 7 (sleeved outside the damper) provides the pull-back force; the damping spring 105 and the damping spring 302 rebound together; the piston rod of the damper 2 retracts, and the limiting ring 6 moves down; if the arc block 5 gets stuck above the limiting ring 6 due to an abnormality: the edge of the limiting ring 6 is designed with rounded corners, so that the arc block 5 can slide down smoothly during the reset process; ensuring that the system reliably returns to the initial standby state and has self-recovery capability.

[0057] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A photovoltaic tracking bracket wind protection device, comprising a main beam (1), a crossbeam (101) fixedly mounted on the main beam (1), a driving device (102) mounted on the main beam (1), a beam frame (103) fixedly mounted on the crossbeam (101), the main beam (1) rotating the beam frame (103) via the driving device (102), and a photovoltaic panel (104) fixedly mounted on the beam frame (103), characterized in that: Two damping springs (105) are fixedly installed on the main beam (1). The main beam (1) and the drive device (102) are fixedly connected by the two damping springs (105). The two damping springs (105) are symmetrically designed. A damping frame (106) is provided on the crossbeam (101), a damper (2) is provided on the main beam (1), a pre-damping assembly (3) is provided on the damping frame (106), the pre-damping assembly (3) includes a bellows (301), a second damping spring (302) is sleeved on the outer surface of the bellows (301), the top end of the second damping spring (302) is fixedly connected to the top end of the outer surface of the bellows (301), the second damping spring (302) is fixedly connected to the bottom end of the outer surface of the bellows (301), the top end of the bellows (301) is rotatably connected to the damping frame (106), and the bottom end of the bellows (301) is rotatably connected to the main beam (1).

2. The photovoltaic tracking bracket high wind protection device according to claim 1, characterized in that, The damper (2) is disposed inside the bellows (301), and the fixing part of the damper (2) is fixedly connected to the bottom of the inner surface of the bellows (301).

3. A photovoltaic tracking bracket wind protection device according to claim 2, characterized in that, Air inlets (4) are fixedly provided at the top and bottom of the outer surface of the corrugated pipe (301), and filter screens (401) are provided at the ends of the air inlets (4).

4. A photovoltaic tracking bracket high-wind protection device according to claim 3, characterized in that, The bellows (301) is initially in a contracted state. The length of the bellows (301) in its initial state is greater than the length of the damper (2) in its initial state. The inner wall of the bellows (301) is provided with multiple sets of arc blocks (5). The outer surface of the damping part of the damper (2) is fixedly fitted with a limiting ring (6). The limiting ring (6) is used in conjunction with the multiple sets of arc blocks (5). The arc blocks (5) can push the limiting ring (6) upward.

5. A photovoltaic tracking bracket wind protection device according to claim 4, characterized in that, The arc block (5) is located below the limiting ring (6). The horizontal position of the limiting ring (6) is the same as the horizontal position of the corrugated pipe (301) crest. The outer diameter of the limiting ring (6) is larger than the inner diameter of the corrugated pipe (301) trough.

6. A photovoltaic tracking bracket high-wind protection device according to claim 5, characterized in that, The outer surface of the damping part of the damper (2) is fitted with a return spring (7). The top of the return spring (7) is fixedly connected to the outer surface of the limiting ring (6), and the bottom of the return spring (7) is fixedly connected to the outer surface of the fixing part of the damper (2).

7. A photovoltaic tracking bracket wind protection device according to claim 6, characterized in that, A reserved groove (303) is provided between the inside of the bellows (301) and the damper (2). A pad (8) is provided in the reserved groove (303), and the pad (8) is fixedly connected to the top of the inner surface of the bellows (301).

8. A photovoltaic tracking bracket wind protection device according to claim 7, characterized in that, The maximum elongation of the damper (2) is greater than the length of the reserved groove (303). The side of the pad (8) is in contact with the inner wall of the corrugated pipe (301) in the initial state. The pad (8) is a soft rubber block.

9. A photovoltaic tracking bracket high-wind protection device according to claim 8, characterized in that, The horizontal position of the pad (8) is greater than that of the air inlet (4), and the pad (8) is hollow inside.

10. A photovoltaic tracking bracket wind protection device according to claim 9, characterized in that, The limiting ring (6) has a rounded corner design at its edge, and the horizontal position height of the arc block (5) is greater than the horizontal position height of the damper (2) fixing part.

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