A vibration suppression device for a photovoltaic rack

Abstract

The present application relates to the field of photovoltaic support, provide a kind of photovoltaic support vibration suppression device, including column, erect between two columns and parallelly arranged support cable, the support cable is laid with photovoltaic board piece, the bottom four corners of the photovoltaic board piece are respectively installed on support cable by assembly part;Two adjacent assembly parts on the same support cable are installed with gap support assembly, the gap support assembly is equipped with the buckle groove assembly for buckling photovoltaic board piece board edge;The gap support assembly includes: respectively placed in front and rear of support cable half sleeve and fixed half lock pipe, the half sleeve front end left and right side are all equipped with bracing plate.The present application is when used, by the synergistic effect of gap support assembly, spoiler channel, wind power control assembly and buckle groove assembly, the problem of micro-amplitude self-excitation vibration caused by the fixed rhythm thrust of gap airflow is solved, and the dual function of weak wind vibration suppression and strong wind self-protection is realized.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic brackets, and more specifically, to a vibration suppression device for photovoltaic brackets. Background Technology

[0002] With the promotion of photovoltaic power generation, large-span flexible photovoltaic supports have been widely used to adapt to complex terrains such as mountains, fish ponds, and tidal flats and to reduce construction costs. Among them, the double-layer cable truss type flexible photovoltaic support is the most representative. This support consists of columns, load-bearing cables, stabilizing cables, and rigid struts, and photovoltaic modules are laid on the load-bearing cables to meet the requirements of large-span layout.

[0003] The key to the above-mentioned photovoltaic support system's great leap forward lies in the fact that both the load-bearing cable and the stabilizing cable are anchored at both ends and pre-tensioned. The two are connected by rigid struts arranged at intervals along the cable length, forming a spatial force system in which the upper cable is under tension, the struts are under compression, and the lower cable is under tension. This synergistic effect of tension and relaxation gives the structure greater overall stiffness and torsional stiffness.

[0004] However, to meet the flatness requirements of photovoltaic modules, the cable truss needs to maintain a high preload, which makes the cable body sensitive to airflow disturbances. In actual installation, the photovoltaic modules are fixed to the load-bearing cables by positioning blocks at their four corners. Since the positioning blocks have a certain thickness, a through gap is naturally formed between the photovoltaic modules and the load-bearing cables. When airflow passes through this gap, it will generate a fixed rhythm of alternating thrust on the windward edge of the photovoltaic modules and the surface of the cable body. Once this thrust approaches the natural frequency of the structure, wind energy will be continuously input into the system, exciting micro-vibrations with small amplitude but long duration. This vibration can cause fatigue loosening of connectors, micro-cracks in the modules, and fretting wear of steel wires, ultimately leading to component detachment and reduced power generation efficiency. Among the existing solutions, increasing the cable diameter or reducing the span will significantly increase the cost, and conventional viscous dampers have a response dead zone for micro-amplitude high-frequency vibrations, so the effects are not ideal.

[0005] Therefore, this application proposes a vibration suppression device for photovoltaic brackets to solve the above problems. Summary of the Invention

[0006] Technical problem to be solved: In view of the problems existing in the prior art, the purpose of this invention is to provide a vibration suppression device for photovoltaic brackets, which solves the problem that the high pretension and the gap between the four corner positioning blocks in the double-layer cable truss cause the airflow to generate a fixed rhythm of alternating thrust, resulting in micro-amplitude self-excited vibration, which in turn causes fatigue loosening of the connectors, hidden cracks in the components and wear of the steel wires.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a vibration suppression device for a photovoltaic support, comprising a column and a support cable erected between two columns and arranged in parallel. A photovoltaic panel is laid on the support cable, and the four corners of the bottom of the photovoltaic panel are respectively installed on the support cable by fittings. A gap support assembly is installed between two adjacent fittings on the same support cable. The gap support assembly is provided with a fastening groove assembly for fastening the edge of the photovoltaic panel. The gap support assembly includes: a half-sleeve and a fixed half-locking tube respectively placed at the front and rear ends of the support cable. Support plates are installed on the left and right sides of the front end of the half-sleeve. The left and right sides of the fixed half-locking tube are connected to the rear end of the support plate by bolts, and the half-sleeve and the fixed half-locking tube are locked and embraced on the support cable. A baffle plate is installed in the upper middle part of the front side between the two support plates. A turbulence channel is opened in the lower middle part of the baffle plate. When the airflow flows into the gap between the photovoltaic panel and the support cable, it first passes through the turbulence channel and is disturbed by it, preventing the excitation frequency from locking with the natural frequency of the structure, thereby suppressing self-excited vibration.

[0008] In a new embodiment, the gap support assembly is provided with a wind force regulation component for adapting to strong and weak winds. The wind force regulation component includes a windward cone plate, a balance cone plate, and a weight core column. The front and rear outer sides of the half-sleeve and the fixed half-locking tube after they are joined together are respectively provided with a windward cone plate and a balance cone plate. The windward cone plate and the balance cone plate are connected by bolts and are rotatably connected to the outer walls of the half-sleeve and the fixed half-locking tube. A weight core column is installed in the middle of both the windward cone plate and the balance cone plate. When facing weak winds, the windward cone plate and the balance cone plate maintain a balanced posture, allowing the airflow through the turbulence channel to pass through.

[0009] In a new embodiment, the mass of the weight core mounted on the windward cone plate is greater than the mass of the weight core mounted on the balance cone plate.

[0010] In a new embodiment, the inner wall of the turbulence channel has an asymmetric wave groove arranged along the airflow direction, the asymmetric wave groove being composed of several alternating peaks and troughs.

[0011] In a new embodiment, a guide plate is installed at the lower center between the two support plates, and the top of the guide plate is an inclined surface; when facing strong winds, the airflow is guided by the guide plate and impacts the lower end surface of the windward cone plate, pushing the windward cone plate and the balance cone plate to rotate to a vertical state, sealing the gap between the photovoltaic panel and the support cable.

[0012] In a new embodiment, the windward cone plate and the balance cone plate are provided with a torsion assembly, the torsion assembly including an arc groove and a positioning strip; the lower rear end of the windward cone plate and the upper middle front end of the balance cone plate are both provided with arc grooves; the middle front end of the half sleeve and the middle rear end of the fixed half locking tube are both provided with positioning strips, and the positioning strips slide in the arc grooves.

[0013] In a new embodiment, the slotting assembly includes: a squeezed cotton layer installed on the upper rear side of the barrier plate and abutting against the edge of the photovoltaic panel; a contact pressure block installed on the upper rear side of the support plate; an inner slot opening opened at the rear of the contact pressure block; and a positioning plate edge block fixed to the edge of the photovoltaic panel and engaging with the inner slot opening.

[0014] In a new embodiment, the inner walls of the half-sleeve and the fixed half-locking tube are provided with an anti-slip buffer layer, which abuts against the outer surface of the support cable to increase frictional resistance and prevent wear.

[0015] In a new embodiment, a stabilizing cable is arranged parallel below the supporting cable, and the supporting cable and the stabilizing cable are connected by a rigid strut; both ends of the rigid strut are provided with elastic buffer joints, which are connected to the supporting cable and the stabilizing cable to absorb vibration and reduce stress at the rigid connection.

[0016] Beneficial effects: Compared with the prior art, the advantages of the present invention are as follows: 1. The present application disrupts the airflow pattern by setting a turbulence channel at the airflow source, absorbs residual vibration by using a slot assembly, achieves constant opening in weak wind and self-blocking in strong wind by using a wind power control assembly, and reduces the stress of the strut by using an elastic buffer joint. The above structures are layered and progressive and work together to solve the problem of self-excited vibration caused by the fixed rhythm thrust of the intermittent airflow, and realizes the dual functions of vibration suppression in weak wind and self-protection in strong wind.

[0017] 2. The half-sleeve and the fixed half-locking tube are engaged with the support cable, and a turbulence channel with asymmetric wave grooves is set between the support plates. This disturbs the airflow at the source of the gap, destroys its periodic alternating thrust, and directly intervenes in the aerodynamic excitation from the source, avoiding the input of vibration energy.

[0018] 3. To address the residual turbulent pulsations that may still occur after the airflow is disrupted by the turbulence channel, and the resulting local micro-vibrations in the barrier plate, the slotted assembly absorbs these micro-vibrations by squeezing the cotton layer and relies on the engagement of the inner slot with the positioning plate edge block to prevent the plate edge from slipping off, thereby blocking the transmission of vibration to the photovoltaic panel and reducing the risk of fatigue damage and micro-cracks at the plate edge.

[0019] 4. By utilizing the asymmetrical mass distribution of the weight core on the windward cone plate and the balance cone plate, the two cone plates can automatically maintain a normally open and balanced posture by gravity when there is weak wind or no wind. This ensures that the airflow through the turbulence channel passes smoothly and maintains normal ventilation and heat dissipation at the bottom of the photovoltaic panel. The entire process does not require external energy and relies entirely on gravity for automatic balance.

[0020] 5. The turbulence channel is mainly designed to handle weak wind conditions. When strong winds arrive, the airflow impacts the inclined surface of the guide plate and is then concentrated and guided to the lower end of the windward cone plate, forming a driving torque sufficient to overcome the gravity reset torque. This drives the windward cone plate and the balance cone plate to rotate to a near-vertical state to block the gap and obstruct the airflow channel. This prevents the wind pressure that would normally impact the back of the support cables and photovoltaic panels from penetrating, thereby significantly reducing the horizontal wind load on the entire support system. Consequently, it reduces the stress on the support cables, photovoltaic panels, and various components, preventing the above structures from being overloaded and damaged in strong winds. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0022] Figure 2 This is a front view of the present invention.

[0023] Figure 3 This is a schematic diagram showing the connection state of the support cable, stabilizing cable, and rigid strut of the present invention.

[0024] Figure 4 This is a schematic diagram showing the installation status of the photovoltaic panel, assembly, and support cable of the present invention.

[0025] Figure 5 This is a schematic diagram of the installation position of the gap support component of the present invention.

[0026] Figure 6 This is a schematic diagram of the photovoltaic panel and support cable in a disassembled state according to the present invention.

[0027] Figure 7 This is a schematic diagram of the gap support component structure of the present invention.

[0028] Figure 8 This is a schematic diagram showing the installation location of the wind power control component of the present invention.

[0029] Figure 9 This is a schematic diagram of the positioning strip position structure on the half-sleeve of the present invention.

[0030] Figure 10 This is a schematic diagram of the torsion assembly structure of the present invention.

[0031] Figure 11 This is a schematic diagram of the initial state of the windward cone plate and the balancing cone plate under weak wind conditions according to the present invention.

[0032] Figure 12 This is a schematic diagram of the vertical state of the windward cone plate and the balancing cone plate under strong wind conditions according to the present invention.

[0033] Figure 13 This is a schematic diagram of the turbulence channel structure of the present invention.

[0034] The attached diagram is labeled as follows: 1. Column;

[0035] 2. Support cable; 21. Stabilizing cable; 22. Rigid strut; 23. Flexible buffer joint;

[0036] 3. Photovoltaic panels; 4. Assembly parts;

[0037] 5. Gap support assembly; 51. Half sleeve; 52. Fixed half lock pipe; 53. Support plate; 54. Barrier plate; 55. Turbulence channel; 551. Asymmetric wave groove; 56. Guide plate;

[0038] 6. Clipping assembly; 61. Extruded cotton layer; 62. Contact pressure block; 63. Inner groove bayonet; 64. Positioning plate edge block;

[0039] 7. Wind power control components; 71. Windward cone; 72. Balance cone; 73. Weight core column;

[0040] 8. Torsion assembly; 81. Arc groove; 82. Positioning strip. Detailed Implementation

[0041] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0042] This application provides a vibration suppression device for photovoltaic supports, which solves the problem of micro-amplitude self-excited vibration caused by the fixed rhythmic alternating thrust of airflow in double-layer cable trusses due to high pretension and gaps between the four corner positioning blocks. This vibration leads to fatigue loosening of connectors, micro-cracks in components, and wear of steel wires. In use, the device solves the problem of micro-amplitude self-excited vibration caused by the fixed rhythmic thrust of airflow in the gaps through the synergistic effect of the gap support component, the turbulence channel, the wind power control component, and the fastening groove component. It also achieves the dual functions of vibration suppression in weak winds and self-protection in strong winds.

[0043] The technical solutions in this application are intended to solve the above-mentioned technical problems, and the overall approach is as follows.

[0044] Example 1, please refer to Figures 1-13This application provides a vibration suppression device for a photovoltaic support structure, including a column 1 and a support cable 2 erected between two columns 1 and arranged in parallel. A photovoltaic panel 3 is laid on the support cable 2, and the four corners of the bottom of the photovoltaic panel 3 are respectively installed on the support cable 2 by fittings 4. A gap support assembly 5 is installed between two adjacent fittings 4 on the same support cable 2. The gap support assembly 5 is provided with a fastening groove assembly 6 for fastening the edge of the photovoltaic panel 3. The gap support assembly 5 includes: a half-sleeve 51 placed at the front and rear of the support cable 2 respectively and a fixed half-lock. Support plates 53 are installed on the left and right sides of the front end of the tube 52 and the half-sleeve 51. The left and right sides of the fixed half-lock tube 52 are connected to the rear end of the support plate 53 by bolts. The half-sleeve 51 and the fixed half-lock tube 52 are locked and hugged to the support cable 2. A baffle plate 54 is installed in the upper middle part of the front side between the two support plates 53. A turbulence channel 55 is opened in the lower middle part of the baffle plate 54. Before the airflow flows into the gap between the photovoltaic panel 3 and the support cable 2, it first passes through the turbulence channel 55 and is disturbed by it, preventing the excitation frequency from locking with the natural frequency of the structure, thereby suppressing self-excited vibration.

[0045] Furthermore, the inner walls of the half-sleeve 51 and the fixed half-locking tube 52 are provided with anti-slip buffer layers, which abut against the outer surface of the support cable 2 to increase frictional resistance and prevent wear.

[0046] In the preferred embodiment of this solution, the half-sleeve 51 and the fixed half-locking tube 52 are attached to the support cable 2, and a baffle plate 54 is set between the two support plates 53. A turbulence channel 55 is opened in the middle and lower part of the baffle plate 54, so that the airflow must pass through the turbulence channel 55 and be disturbed by it before entering the gap between the photovoltaic panel 3 and the support cable 2. This disrupts the original periodic alternating thrust of the airflow, prevents the excitation frequency from locking with the natural frequency of the structure, and suppresses the establishment of self-excited vibration from the source. This device has a simple structure, does not require external energy, and is suitable for the continuous vibration suppression needs of flexible photovoltaic supports in weak wind environments and the protection needs in strong wind conditions.

[0047] Specifically, the operation process of the vibration suppression device for the photovoltaic support is as follows:

[0048] First, in the double-layer cable truss flexible photovoltaic support, the photovoltaic panel 3 is fixed to the support cable 2 by the four corner fittings 4. Since the fittings 4 themselves have a certain thickness, a through gap is naturally formed between the photovoltaic panel 3 and the support cable 2. When a breeze passes through this gap, the airflow will generate a regular and alternating thrust on the windward edge of the photovoltaic panel 3 and the surface of the support cable 2. If the rhythm of this thrust happens to match the natural vibration frequency of the entire support, the wind will continuously input energy into the structure, exciting a small amplitude but long duration of micro-vibration. Over time, the fittings 4 will loosen, the photovoltaic panel 3 will develop hidden cracks, and the steel wires inside the support cable 2 will wear down, eventually leading to component detachment and reduced power generation efficiency.

[0049] Second, in order to block the above-mentioned vibration mechanism, this device has a gap support assembly 5 installed on each support cable 2 between two adjacent assemblies 4. The gap support assembly 5 is held on the support cable 2 by a half sleeve 51 and a fixed half locking tube 52. Specifically, the half sleeve 51 is placed at the front of the support cable 2, and the front end of the half sleeve 51 is fixed with a support plate 53 on the left and right sides. The fixed half locking tube 52 is placed at the rear of the support cable 2, and the left and right sides of the fixed half locking tube 52 are connected to the rear end of the support plate 53 by bolts, so that the half sleeve 51 and the fixed half locking tube 52 are locked together, and the entire gap support assembly 5 is firmly attached to the support cable 2.

[0050] Meanwhile, an anti-slip buffer layer is provided on the inner wall of the half sleeve 51 and the fixed half locking tube 52. This anti-slip buffer layer directly abuts against the outer surface of the support cable 2. On the one hand, it increases the frictional resistance and prevents the gap support assembly 5 from sliding along the support cable 2; on the other hand, it avoids rigid hard contact and protects the surface of the support cable 2 from wear.

[0051] Secondly, a baffle plate 54 is fixed in the upper middle part of the front side between the two support plates 53. A turbulence channel 55 is opened in the lower middle part of the baffle plate 54. When the airflow enters, the turbulence channel 55 will actively disrupt the regularity of the airflow and destroy its periodic alternating thrust. At the same time, a guide plate 56 is also installed in the lower middle part between the two support plates 53. The top of the guide plate 56 is made into an inclined surface. Its function is to guide the airflow to the windward cone plate 71 in the wind force control component 7 when there is a strong wind, and push the windward cone plate 71 to rotate and block the gap.

[0052] In addition, the gap support assembly 5 is also provided with a fastening groove assembly 6, which is used to fasten the edge of the photovoltaic panel 3. The fastening groove assembly 6 includes a squeeze cotton layer 61, a contact pressure block 62, an inner groove slot 63, and a positioning plate edge block 64. The squeeze cotton layer 61 is attached to the upper rear side of the barrier plate 54 and directly contacts the edge of the photovoltaic panel 3, which plays a role in buffering and absorbing minor vibrations. At the same time, the contact pressure block 62 is installed on the upper rear side of the support plate 53, and an inner groove slot 63 is opened at its rear. The positioning plate edge block 64 is fixed on the edge of the photovoltaic panel 3 and engages with the inner groove slot 63, thereby firmly positioning the edge of the photovoltaic panel 3 on the gap support assembly 5.

[0053] Third, when a weak wind (a light breeze) flows toward the gap between the photovoltaic panel 3 and the support cable 2 (refer to...) Figure 4The airflow first passes through the turbulence channel 55 in the lower part of the baffle plate 54. The inner wall of the turbulence channel 55 has an asymmetric wave groove 551 arranged along the airflow direction. The asymmetric wave groove 551 is composed of several alternating peaks and troughs. Since the peak spacing and trough depth of the asymmetric wave groove 551 are not equal and not periodic, the airflow is repeatedly cut and turned when passing through, forming disordered turbulence, thereby destroying the alternating thrust that could have been generated at a fixed rhythm. At this time, the excitation frequency of the airflow cannot be locked with the natural frequency of the structure, and the self-excited vibration is suppressed. Conversely, the airflow from the other side can also be subjected to vibration suppression treatment.

[0054] Meanwhile, the wind control component 7 is in a weak wind equilibrium state: the front and rear sides of the outer side of the half-sleeve 51 and the fixed half-locking tube 52 after they are joined together are respectively provided with a windward cone plate 71 and a balance cone plate 72. The two are connected by bolts and rotatably installed on the outer wall of the half-sleeve 51 and the fixed half-locking tube 52. The middle of both is also equipped with a weight core column 73. Among them, the weight core column 73 on the windward cone plate 71 is heavier than the weight core column 73 on the balance cone plate 72. Under weak wind conditions, since the windward cone plate 71 is heavier, it maintains a balanced posture with the balance cone plate 72, that is, it does not rotate too much, so that the airflow coming out of the turbulence channel 55 passes smoothly without affecting normal ventilation. The gap wind flows normally to the bottom of the photovoltaic panel 3, which is conducive to heat dissipation at the bottom of the photovoltaic panel 3.

[0055] In addition, since the barrier plate 54 is located at the front end of the airflow channel, the airflow impact first acts on the barrier plate 54 rather than directly on the edge of the photovoltaic panel 3. Therefore, the barrier plate 54 plays the role of replacing the edge of the panel in bearing the wind pressure, thereby reducing the direct force on the edge of the photovoltaic panel 3 and reducing its fatigue damage risk.

[0056] At the same time, after the airflow impacts the baffle plate 54, it enters the turbulence channel 55. Although it has been disturbed, there may still be broadband, low-amplitude residual turbulent pulsations. When these pulsations act on the baffle plate 54, they will cause local micro-vibrations. Therefore, the squeeze cotton layer 61 and contact block 62 in the slot assembly 6 on the baffle plate 54 can absorb the local micro-vibrations and the micro-movements that may be generated at the snap-fit ​​point, so as to prevent the vibration from being transmitted to the photovoltaic panel 3.

[0057] Fourth, when encountering strong winds, when the wind speed exceeds that of weak wind conditions, the strong winds first impact the inclined surfaces of the guide plates 56 at the lower middle of the two support plates 53, and the airflow is guided to the lower end surface of the windward cone plate 71; the strong wind pressure overcomes the balancing torque of the windward cone plate 71 and the balancing cone plate 72, pushing the windward cone plate 71 and the balancing cone plate 72 connected to it by bolts to rotate outside the half sleeve 51 and the fixed half locking tube 52 after they are joined, until they rotate to a near-vertical state (due to the different masses of the two weight core columns 73, there will be a forward tilting force, and it is not completely vertical), thereby sealing the gap between the photovoltaic panel 3 and the support cable 2, blocking the airflow channel at the gap. Since the airflow can no longer penetrate the gap, the wind pressure that would have impacted the back of the support cable 2 and the photovoltaic panel 3 disappears. Therefore, the horizontal wind load borne by the support cable 2 and the photovoltaic panel 3 is significantly reduced, thereby greatly reducing the wind resistance of the entire support system and protecting the support structure from damage by strong winds;

[0058] It should be noted that during strong winds, the airflow passing through the guide plate 56 is fast and has high wind pressure, triggering the windward cone plate 71 to rotate to a vertical position; while the airflow passing through the turbulence channel 55 is slow and has low wind force, and has been disrupted into disordered turbulence by the asymmetric wave groove 551, so it will not cause regular interference or additional resistance to the rotation of the windward cone plate 71 and the balance cone plate 72, and therefore will not affect the reliable execution of the blocking action.

[0059] Secondly, after the blockage, the disordered airflow entering from the turbulence channel 55 impacts the back of the upright windward cone plate 71, cancels out the forward kinetic energy, and drops sharply. It slows down and accumulates in the area between the two support plates 53, and then slowly escapes into the external environment through the assembly gap in this area and the air permeability of the squeeze cotton layer 61, without forming harmful pressure accumulation.

[0060] Secondly, in rainy weather, the top of the extruded cotton layer 61 is equipped with a rainproof and venting layer. This layer allows gas to seep out while preventing rainwater from entering, ensuring that the device can still vent normally in rainy weather.

[0061] During rotation, the torsion assembly 8 in the windward cone 71 and the balance cone 72 works together: the arc groove 81 opened in the lower rear end of the windward cone 71 and the upper middle front end of the balance cone 72 slides with the positioning strip 82 installed in the middle front end of the half sleeve 51 and the middle rear end of the fixed half locking tube 52. This cooperation guides the rotation trajectory and limits the rotation range to avoid over-rotation or jamming.

[0062] After the strong wind, under the forward tilting effect of the gravity of the weight core column 73 (the weight of the weight core column 73 in the windward cone 71 is greater than the weight of the weight core column 73 in the balance cone 72), the windward cone 71 and the balance cone 72 automatically return to the weak wind balance posture, the gap reopens, and the turbulence channel 55 plays its role again.

[0063] Fifth, in this device, a stabilizing cable 21 is arranged parallel below the support cable 2, and the two are connected by a rigid strut 22. The two ends of the rigid strut 22 are provided with elastic buffer joints 23, which are used to absorb vibration and reduce stress at the rigid connection, thereby enhancing the overall rigidity and torsional rigidity of the entire photovoltaic bracket. Together with the gap support component 5 above, they form a multi-level vibration damping system.

[0064] As a further embodiment of the present invention, please refer to Figure 8 , Figures 10-12 The gap support assembly 5 is equipped with a wind force regulation assembly 7 for adapting to strong and weak winds. The wind force regulation assembly 7 includes a windward cone 71, a balance cone 72, and a weight core 73. The windward cone 71 and the balance cone 72 are respectively provided on the front and rear sides of the outer half-sleeve 51 and the fixed half-lock tube 52 after they are joined together. The windward cone 71 and the balance cone 72 are connected by bolts and are rotatably connected to the outer walls of the half-sleeve 51 and the fixed half-lock tube 52, respectively. The weight core 73 is installed in the middle of both the windward cone 71 and the balance cone 72. When facing weak winds, the windward cone 71 and the balance cone 72 maintain a balanced posture, allowing the airflow through the turbulence channel 55 to pass through.

[0065] Furthermore, the mass of the weight core 73 installed on the windward cone 71 is greater than the mass of the weight core 73 installed on the balance cone 72.

[0066] Specifically, by setting up a rotating structure consisting of a windward cone plate 71, a balance cone plate 72, and a weight core 73, and by utilizing the asymmetrical gravity distribution that the mass of the weight core 73 on the windward cone plate 71 is greater than that on the balance cone plate 72, the windward cone plate 71 and the balance cone plate 72 rotate around the outer wall of the half sleeve 51 and the fixed half locking tube 52.

[0067] In the presence of weak wind or no wind, the aforementioned rotating structure allows the windward cone plate 71 and the balance cone plate 72 to automatically recover and maintain a stable balanced posture, i.e., a normally open posture, by relying on the gravitational torque. This ensures smooth ventilation at the gaps and prevents the windward cone plate 71 and the balance cone plate 72 from being vertically blocked and accidentally closed, thus affecting normal heat dissipation.

[0068] Meanwhile, the mass difference between the two weight cores 73 defines the starting torque threshold. The windward cone 71 will only rotate to block the gap when the driving torque applied by the strong wind through the guide plate 56 exceeds the gravity reset torque. Therefore, on the one hand, the gap is kept open in weak winds to avoid false triggering; on the other hand, reliable response is ensured in strong winds, and the wind force is automatically reset by gravity after the wind weakens. The wind force control component 7 is completely passive, highly adaptable, and requires no maintenance for long-term use. Together with the turbulence channel 55, it achieves the dual functions of vibration suppression and extreme wind load protection.

[0069] As a further embodiment of the present invention, please refer to Figure 13 The inner wall of the turbulence channel 55 has an asymmetric wave groove 551 arranged along the airflow direction. The asymmetric wave groove 551 is composed of several alternating peaks and troughs.

[0070] Specifically, by setting the inner wall of the turbulence channel 55 as an asymmetric wave groove 551, that is, the spacing between the wave crests is not equal and the depth of the wave troughs is not equal, and there is no fixed change cycle, the airflow direction and local velocity are constantly changed when it passes through, thereby breaking down the originally regular vortices into broadband, low-amplitude disordered turbulence.

[0071] Meanwhile, the above structure directly acts on the source of airflow excitation, and can break the frequency lock condition between the airflow and the support structure without external energy, thereby suppressing the establishment of self-excited vibration. Compared with uniform corrugations or smooth channels, the asymmetric wave groove 551 does not introduce new fixed frequency disturbances, while maintaining the unobstructedness of the channel and does not significantly increase the conventional ventilation resistance, making it suitable for long-term outdoor maintenance-free operation.

[0072] As a further embodiment of the present invention, please refer to Figure 12 A guide plate 56 is installed at the lower center between the two support plates 53. The top of the guide plate 56 is an inclined surface. When facing strong winds, the airflow is guided by the guide plate 56 and impacts the lower end face of the windward cone plate 71, pushing the windward cone plate 71 and the balance cone plate 72 to rotate to a vertical state, sealing the gap between the photovoltaic panel 3 and the support cable 2.

[0073] Specifically, when strong winds arrive, the airflow first impacts the inclined surface of the guide plate 56, and after being changed in direction, it is concentrated and guided to the lower end surface of the windward cone plate 71, thereby forming a driving thrust pointing in the closing direction on the lower end surface of the windward cone plate 71.

[0074] The magnitude of the aforementioned driving thrust increases significantly with the increase of wind speed, which is sufficient to overcome the restoring torque generated by the mass difference between the windward cone plate 71 and the balance cone plate 72 due to the mass difference of the weight core 73 (this restoring torque keeps the windward cone plate 71 and the balance cone plate 72 in a balanced posture in weak wind), thereby pushing the windward cone plate 71 and the balance cone plate 72 to rotate to a vertical blocking posture.

[0075] It should be noted that the deflector 56 itself does not generate active action, but is driven entirely by the kinetic energy of strong wind. When it is used in conjunction with the wind control component 7, it can automatically switch between the gap opening mode when the wind is balanced and the gap sealing mode when the wind is driven.

[0076] In addition, the deflector 56 is located in the lower middle part between the two support plates 53, avoiding the upper turbulence channel 55. It will not affect the normal flow of air through the turbulence channel 55 when the wind is weak, nor will it interfere with the turbulence suppression function of the asymmetric wave groove 551. Therefore, the deflector 56 and the turbulence channel 55 correspond to the two working conditions of strong wind and weak wind, respectively. They are independent of each other in space and complementary in function, ensuring the adaptability of the device to different wind forces.

[0077] As a further embodiment of the present invention, please refer to Figure 8 and Figure 10 The windward cone plate 71 and the balance cone plate 72 are provided with a torsion assembly 8, which includes an arc groove 81 and a positioning strip 82. The lower rear end of the windward cone plate 71 and the upper middle front end of the balance cone plate 72 are both provided with arc grooves 81. The middle front end of the half sleeve 51 and the middle rear end of the fixed half locking tube 52 are both provided with positioning strips 82, and the positioning strips 82 slide in the arc grooves 81.

[0078] Specifically, by opening arc grooves 81 on the windward cone plate 71 and the balance cone plate 72 respectively, and setting positioning strips 82 on the half sleeve 51 and the fixed half locking tube 52 respectively, the positioning strips 82 slide in the arc grooves 81 to form mechanical guidance and limit on the rotation trajectory of the windward cone plate 71 and the balance cone plate 72.

[0079] The above structure can constrain the rotation path of the windward cone plate 71 and the balance cone plate 72, preventing them from swaying, jamming or excessive rotation during strong wind impact or resetting process, thereby ensuring the accuracy of the blocking action and the smoothness of the resetting action.

[0080] Meanwhile, the torsion assembly 8 does not require additional elastic elements or dampers; it can achieve guiding and limiting functions solely through sliding fit. Its simple structure and ease of processing and assembly make it suitable for long-term maintenance-free operation in outdoor environments.

[0081] As a further embodiment of the present invention, please refer to Figures 6-8 The slot assembly 6 includes: a squeezed cotton layer 61, which is installed on the upper rear side of the barrier plate 54 and abuts against the edge of the photovoltaic panel 3; a contact pressure block 62, which is installed on the upper rear side of the support plate 53; an inner slot slot 63, which is opened at the rear of the contact pressure block 62; and a positioning plate edge block 64, which is fixed to the edge of the photovoltaic panel 3 and engages with the inner slot slot 63.

[0082] Specifically, the snap-fit ​​assembly 6 consists of a squeeze cotton layer 61, a contact pressure block 62, an inner groove slot 63, and a positioning plate edge block 64, forming a structure for buffering and snap-fit ​​engagement;

[0083] Among them, the squeezed cotton layer 61 directly contacts the edge of the photovoltaic panel 3 to absorb the residual micro-vibration transmitted from the barrier plate 54 and block the transmission path of vibration energy to the photovoltaic panel 3.

[0084] Meanwhile, the contact block 62 is fixed to the upper rear side of the support plate 53, providing a stable support surface for the edge of the plate; the inner groove slot 63 is opened at the rear of the contact block 62, and engages with the positioning plate edge block 64 fixed on the edge of the photovoltaic panel 3, thereby limiting the front and rear displacement of the edge of the plate and preventing the front and rear edges of the photovoltaic panel 3 from slipping or colliding under wind load. This achieves reliable positioning of the photovoltaic panel 3 and the gap support component 5, which is convenient for on-site installation and replacement, and helps to reduce fatigue damage and microcracks on the edge of the plate.

[0085] As a further embodiment of the present invention, please refer to Figure 2 and Figure 3 A stabilizing cable 21 is arranged parallel below the supporting cable 2. The supporting cable 2 and the stabilizing cable 21 are connected by a rigid strut 22. Both ends of the rigid strut 22 are provided with elastic buffer joints 23. The elastic buffer joints 23 are connected to the supporting cable 2 and the stabilizing cable 21 to absorb vibration and reduce stress at the rigid connection.

[0086] Specifically, by setting elastic buffer joints 23 at both ends of the rigid strut 22, a non-rigid transition connection is formed between the support cable 2 and the stabilizing cable 21;

[0087] While transmitting axial loads, the above structure can absorb small-amplitude vibrations and high-frequency flutter from the support cable 2 or the stabilizing cable 21, reduce the direct transmission of vibrations along the rigid strut 22 to the other cable, and thus suppress local resonance of the cable truss system.

[0088] In addition, the elastic buffer joint 23 can alleviate the stress concentration at the end of the rigid strut 22, avoid fatigue cracking or loosening of the connection at the end of the rigid strut 22 under long-term alternating load, improve the overall stability of the double-layer cable truss in windy environment, and extend the service life of the rigid strut 22 and its connection nodes.

[0089] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A vibration suppression device for a photovoltaic support structure, comprising a column (1) and a support cable (2) erected between two columns (1) and arranged in parallel, wherein a photovoltaic panel (3) is laid on the support cable (2), and the four bottom corners of the photovoltaic panel (3) are respectively installed on the support cable (2) by fittings (4); characterized in that: A gap support assembly (5) is installed between two adjacent fittings (4) on the same support cable (2), and the gap support assembly (5) is provided with a fastening groove assembly (6) for fastening the edge of the photovoltaic panel (3). The gap support assembly (5) includes: Half-sleeves (51) and fixed half-locking tubes (52) are respectively placed at the front and rear of the support cable (2). Support plates (53) are installed on the left and right sides of the front end of the half-sleeves (51). The left and right sides of the fixed half-locking tubes (52) are connected to the rear end of the support plates (53) by bolts. The half-sleeves (51) and the fixed half-locking tubes (52) are locked and hugged on the support cable (2). A baffle plate (54) is installed on the upper middle part of the front side between the two support plates (53). A turbulence channel (55) is opened in the lower middle part of the baffle plate (54). Before the airflow flows into the gap between the photovoltaic panel (3) and the support cable (2), it passes through the turbulence channel (55) and is disturbed by it, preventing the excitation frequency from locking with the structure's natural frequency, thereby suppressing self-excited vibration; The gap support assembly (5) is provided with a wind force control assembly (7) for adapting to strong and weak winds. The wind force control assembly (7) includes a windward cone plate (71), a balance cone plate (72), and a weight core column (73). The front and rear sides of the outer side of the half sleeve (51) and the fixed half lock tube (52) after they are joined together are respectively provided with a windward cone plate (71) and a balance cone plate (72). The windward cone plate (71) and the balance cone plate (72) are connected by bolts and are rotatably connected to the outer walls of the half sleeve (51) and the fixed half lock tube (52). The middle of the windward cone plate (71) and the balance cone plate (72) are both equipped with a weight core column (73). When facing weak winds, the windward cone plate (71) and the balance cone plate (72) maintain a balanced posture, allowing the airflow through the turbulence channel (55) to pass through.

2. The vibration suppression device for a photovoltaic support as described in claim 1, characterized in that, The mass of the weight core (73) installed on the windward cone plate (71) is greater than the mass of the weight core (73) installed on the balance cone plate (72).

3. The vibration suppression device for a photovoltaic support as described in claim 1, characterized in that, The inner wall of the turbulence channel (55) has an asymmetric wave groove (551) arranged along the airflow direction, and the asymmetric wave groove (551) is composed of several alternating peaks and troughs.

4. The vibration suppression device for a photovoltaic support as described in claim 1, characterized in that, A guide plate (56) is installed at the lower center between the two support plates (53), and the top of the guide plate (56) is an inclined surface; When facing strong winds, the airflow is guided by the guide plate (56) and impacts the lower end face of the windward cone plate (71), pushing the windward cone plate (71) and the balance cone plate (72) to rotate to a vertical state, sealing the gap between the photovoltaic panel (3) and the support cable (2).

5. The vibration suppression device for a photovoltaic support as described in claim 1, characterized in that, The windward cone plate (71) and the balance cone plate (72) are provided with a torsion assembly (8), which includes an arc groove (81) and a positioning strip (82). The lower rear end of the windward cone (71) and the upper middle front end of the balance cone (72) are both provided with arc grooves (81). Positioning strips (82) are installed at the middle of the front end of the half sleeve (51) and at the middle of the rear end of the fixed half locking tube (52), and the positioning strips (82) slide in the arc groove (81).

6. The vibration suppression device for a photovoltaic support as described in claim 1, characterized in that, The buckle assembly (6) includes: The extruded cotton layer (61) is installed on the upper rear side of the barrier plate (54) and abuts against the edge of the photovoltaic panel (3); A contact block (62) is installed on the upper rear side of the support plate (53); an inner groove slot (63) is opened at the rear of the contact block (62); The positioning plate edge block (64) is fixed to the edge of the photovoltaic panel (3) and engages with the inner groove slot (63).

7. The vibration suppression device for a photovoltaic support as described in claim 1, characterized in that, The inner walls of the half-sleeve (51) and the fixed half-lock tube (52) are provided with anti-slip buffer layers. The anti-slip buffer layers abut against the outer surface of the support cable (2) to increase frictional resistance and avoid wear.

8. The vibration suppression device for a photovoltaic support as described in claim 1, characterized in that, A stabilizing cable (21) is arranged parallel below the supporting cable (2), and the supporting cable (2) and the stabilizing cable (21) are connected by a rigid strut (22); The rigid strut (22) is provided with elastic buffer joints (23) at both ends. The elastic buffer joints (23) are connected to the support cable (2) and the stabilizing cable (21) to absorb vibration and reduce stress at the rigid connection.

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