Photovoltaic power generation panel mounting bracket

Abstract

The application provides a photovoltaic power generation panel mounting support, which comprises a cable and a column, one end of the cable passes through the column and is connected with a lock head; further comprising a mounting tower, the mounting tower is provided with a wind wheel, an output shaft of the wind wheel is connected with a water pump, an inlet end of the water pump is connected with a first storage tank, and a water outlet end of the water pump is connected with a counterweight tank; the wind wheel can drive the water pump to operate so as to send the liquid in the first storage tank into the counterweight tank; the liquid in the counterweight tank can flow into the first storage tank under the action of gravity; a lever arm is hinged to the column, a first end of the lever arm is embedded between the column and the lock head, a second end of the lever arm is connected with a traction rope, the traction rope passes through a pulley block arranged on the column and is connected with the counterweight tank; the gravity of the counterweight tank and the liquid in the counterweight tank is transmitted to the second end of the lever arm through the traction rope, so that the first end of the lever arm has a tendency to drive the lock head to move away from the column. The application can adaptively adjust the tension of the cable and the inherent frequency according to the wind load change.

Description

Technical Field

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

[0002] Photovoltaic power generation is an important way to utilize solar energy, and photovoltaic (PV) support structures, as the core load-bearing structure of the system, are mainly used to install PV panels to ensure they maintain optimal tilt angle and structural stability in their installation environment. Currently, PV support structures are mainly divided into two categories: rigid and flexible. Rigid support structures are difficult to adapt to applications with large spans or significant terrain undulations, such as fishponds, sewage treatment plants, and complex mountainous terrain. Flexible support structures, on the other hand, mainly consist of columns and cables. By tensioning the cables between the two columns and mounting the PV panels on the cables, they offer advantages such as large spans and strong terrain adaptability.

[0003] Flexible support structures installed outdoors are inevitably subject to wind loads, which can cause displacement and vibration of the cables. However, in existing flexible support structures, the tension of the cables is a constant value, leading to the following problems: Firstly, if the cable tension is set too low, the cable displacement will be too large when the wind speed is high, causing the photovoltaic panels to shift significantly with the cable. This can lead to squeezing and collision between the photovoltaic panels on the cable, resulting in damage. Secondly, if the cable tension is set too high, the cable will be under high load for a long time, which can easily cause metal fatigue.

[0004] Secondly, the natural frequency of a cable with constant tension is also constant. When the excitation frequency of the wind load is inconsistent with the natural frequency of the cable, the direction of wind work and the direction of cable motion cannot be synchronized, and wind energy cannot be effectively accumulated inside the cable. At this time, the cable only produces random, irregular slight swaying or trembling, and the amplitude remains within a controlled small range, without continuously increasing over time. However, in reality, wind conditions such as wind speed, wind direction, and turbulence characteristics are constantly and randomly changing. Once, under specific wind conditions, the vibration frequency caused by the wind load coincides with the natural frequency of the cable, the cable will resonate. At this time, wind energy is efficiently and continuously input into the cable and accumulates in large quantities inside it, causing the cable to easily enter a violent and prolonged resonant state. In this state, the amplitude of the cable will rapidly become uncontrollable and amplify sharply, exhibiting highly regular and periodic large up-and-down fluctuations or violent twisting, which not only easily causes fatigue fracture of the cable but also leads to serious damage to the photovoltaic panels installed on it. Summary of the Invention

[0005] To overcome the shortcomings of the prior art, the present invention provides a photovoltaic panel mounting bracket that can adaptively adjust the tension and natural frequency of the cables according to changes in wind load.

[0006] The present invention adopts the following technical solution.

[0007] A photovoltaic panel mounting bracket includes a cable and a column, wherein one end of the cable passes through the column and is connected to a lock. It also includes an installation tower, on which a wind turbine is provided. The output shaft of the wind turbine is connected to a water pump. The inlet of the water pump is connected to a first storage tank, and the outlet of the water pump is connected to a counterweight box. A circulation path is formed between the first storage tank, the water pump, and the counterweight box. The wind turbine can drive the water pump to deliver the liquid in the first storage tank into the counterweight tank; The liquid in the counterweight box can flow into the first storage box under the action of gravity; A lever arm is hinged to the column. The first end of the lever arm is embedded between the column and the lock head. The second end of the lever arm is connected to a traction rope. The traction rope passes around the pulley block on the column and is connected to the counterweight box. The weight of the counterweight box and the liquid inside it is transmitted to the second end of the lever arm through the traction rope, causing the first end of the lever arm to tend to move the lock head away from the column.

[0008] Furthermore, it also includes a replenishment box, the bottom of which is connected to the counterweight box via a switch valve, the control lever of which has an open position and a closed position; When the control lever is in the open position, the switch valve is opened, and the liquid in the replenishment tank can flow into the counterweight box under the action of gravity through the switch valve; When the control lever is in the closed position, the switch valve is closed, and the liquid in the replenishment tank cannot flow into the counterweight box through the switch valve under the action of gravity; The control lever is linked to the output shaft of the wind turbine. When the angular acceleration of the output shaft of the wind turbine is greater than the angular acceleration threshold, the control lever remains in the open position until the water level in the replenishment tank is less than the first water level threshold.

[0009] Furthermore, a drive shaft is rotatably connected to the control lever, a flywheel is slidably sleeved on the outer side of the drive shaft, a lower rotating ratchet is provided on the drive shaft, and an upper rotating ratchet that meshes with the lower rotating ratchet is driven to the output shaft of the wind turbine. The differential rotation between the upper rotating ratchet and the lower rotating ratchet can push the control lever to move from the closed position to the open position. The control lever is connected to a first elastic element, which has a tendency to push the control lever from the open position to the closed position.

[0010] Furthermore, a locking ball is movably connected to the replenishment box, a limiting groove corresponding to the locking ball is provided on the control rod, and a limiting member corresponding to the locking ball is provided inside the replenishment box. The limiting member has a locking position and an unlocking position. When the control lever is in the open position and the limiting member is in the locked position, the locking ball is embedded in the limiting groove, and the control lever cannot move from the open position to the closed position; When the limiting member is in the unlocked position, the lock ball disengages from the limiting groove, and the control lever can reciprocate between the open and closed positions; The limiting member is connected to a float and a second elastic member. The buoyancy generated by the float has a tendency to push the limiting member from the unlocked position to the locked position, and the second elastic member has a tendency to push the limiting member from the locked position to the unlocked position.

[0011] Furthermore, the outlet end of the water pump is connected to a reversing valve, which has a first switching position and a second switching position; When the reversing valve is in the first switching position, the outlet of the water pump is connected to the counterweight box; When the reversing valve is in the second switching position, the outlet of the water pump is connected to the replenishment tank.

[0012] Furthermore, the outlet end of the water pump is connected to a flow pipe, and a water collection shell is provided on the outside of the flow pipe; The flow pipe is provided with a water leakage hole, and the water collection shell is hinged with a tipping bucket. The tipping bucket is provided with a first water storage chamber and a second water storage chamber, and has a first steady-state position and a second steady-state position. When the tipping bucket is in the first steady-state position, the liquid in the second water storage chamber flows out, and the liquid in the overflow pipe flows into the first water storage chamber through the drain hole. The gravity of the liquid in the first water storage chamber tends to drive the tipping bucket to rotate from the first steady-state position to the second steady-state position. When the tipping bucket is in the second steady-state position, the liquid in the first water storage chamber flows out, and the liquid in the overflow pipe flows into the second water storage chamber through the leakage hole. The gravity of the liquid in the second water storage chamber tends to drive the tipping bucket to rotate from the second steady-state position to the first steady-state position. The tipping bucket is connected to a drive rod, which is connected to the control handle of the reversing valve via a transmission rod.

[0013] Furthermore, the bottom of the water collection shell is connected to the first storage tank via a water collection pipe, allowing the liquid inside the water collection shell to flow into the first storage tank under the influence of gravity.

[0014] Furthermore, a first shut-off valve is provided at the bottom of the counterweight box, and the opening degree of the first shut-off valve is configured to be proportional to the water level in the counterweight box.

[0015] Furthermore, the first shut-off valve is connected to the first storage tank via the first reflux pipe; The top of the replenishment box is connected to the first storage box via a first overflow pipe.

[0016] Furthermore, a second storage box communicating with the first storage box is provided below the counterweight box, and a buffer chamber connected to the first shut-off valve is formed at the bottom of the counterweight box. A second shut-off valve is provided at the bottom of the buffer chamber, and the second shut-off valve is connected to the second storage box through a second reflux pipe. The second shut-off valve is configured to connect the buffer chamber to the second storage tank when the water level in the buffer chamber exceeds a second water level threshold. The top of the replenishment box is connected to the counterweight box via a second overflow pipe.

[0017] The beneficial effects of this invention are as follows: The invention includes a wind turbine, the output shaft of which is connected to a water pump. When the cable is displaced and vibrates under wind load, the wind turbine is also driven to rotate by the wind load, which drives the water pump to run, sending the liquid in the first storage tank into the counterweight tank. The liquid in the counterweight tank then flows back to the first storage tank under the action of gravity, forming a cycle.

[0018] When wind speed changes, the wind turbine rotation speed changes accordingly, the water pump's operating speed changes synchronously, and the liquid flow rate into the counterweight box is adjusted accordingly, thus changing the weight of the liquid in the counterweight box. This change in liquid weight alters the force transmitted to the second end of the lever arm via the traction rope. When the force on the second end of the lever arm changes, the force acting on the lock head at the first end of the lever arm also changes, causing a synchronous change in the cable tension, ultimately altering the cable's natural frequency. In this way, the cable's natural frequency can change under wind load, effectively preventing the wind load's excitation frequency from coinciding with the cable's natural frequency, thereby preventing cable resonance.

[0019] Furthermore, at higher wind speeds, the water pump operates at a faster speed, increasing the flow rate of liquid entering the counterweight box. This increases the weight of the liquid within the counterweight box, consequently increasing the cable tension and overall cable stiffness. This effectively suppresses macroscopic cable displacement, preventing the photovoltaic panels from being squeezed or collided due to excessive cable displacement. Conversely, at lower wind speeds, the water pump operates at a slower speed, decreasing the flow rate of liquid entering the counterweight box. This reduces the weight of the liquid within the counterweight box, decreasing the cable tension and overall cable stiffness. This prevents the cables from being under high load for extended periods, thus delaying metal fatigue. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1This is a schematic diagram of the structure of the first embodiment; Figure 2 for Figure 1 Enlarged view of part A; Figure 3 This is a schematic diagram of the structure of the second embodiment; Figure 4 for Figure 3 Enlarged view of part B; Figure 5 for Figure 3 Enlarged view of part C.

[0022] Explanation of reference numerals in the attached figures: 1. Cables; 2. Columns; 3. Locks; 4. Mounting tower; 5. Wind turbine; 6. Water pump; 7. First storage tank; 8. Counterweight box; 801. Buffer chamber; 9. Lever arm; 10. Traction rope; 11. Pulley block; 12. Replenishment box; 13. Switch valve; 131. Control lever; 1311. Limit groove; 14. Drive shaft; 15. Flywheel; 16. Lower rotating ratchet; 17. Upper rotating ratchet; 18. First elastic element; 19. Locking ball; 20. Limiting element; 21. Float; 22. Second elastic element; 23. Reversing valve; 231. Control handle; 24. Flow pipe; 241. Leakage hole; 25. Water collection shell; 26. Tipping bucket; 261. First water storage chamber; 262. Second water storage chamber; 27. Drive rod; 28. Transmission rod; 29. ​​Water collection pipe; 30. First shut-off valve; 301. First valve seat; 302. First valve orifice; 303. First valve plug; 304. First spring; 31. First reflux pipe; 32. First overflow pipe; 33. Second storage tank; 34. Second shut-off valve; 341. Second valve seat; 342. Second valve orifice; 343. Second valve plug; 344. Second spring; 345. Fixed magnet; 346. Moving magnet; 35. Second reflux pipe; 36. Second overflow pipe; 37. Planetary gear transmission. Detailed Implementation

[0023] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this application. To better illustrate this embodiment, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product.

[0024] It will be understood by those skilled in the art that certain well-known structures and their descriptions may be omitted in the accompanying drawings. The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] As attached Figure 1 The first embodiment of this application shown includes a photovoltaic panel mounting bracket, comprising a cable 1 and a column 2, with one end of the cable 1 passing through the column 2 and connected to a lock head 3; It also includes an installation tower 4, on which a wind turbine 5 is installed. The output shaft of the wind turbine 5 is connected to a water pump 6. The water inlet of the water pump 6 is connected to a first storage tank 7, and the water outlet of the water pump 6 is connected to a counterweight box 8. A circulation path is formed between the first storage tank 7, the water pump 6 and the counterweight box 8. The wind turbine 5 can drive the water pump 6 to deliver the liquid in the first storage tank 7 into the counterweight tank 8; The liquid in the counterweight box 8 can flow into the first storage box 7 under the action of gravity; A lever arm 9 is hinged to the column 2. The first end of the lever arm 9 is embedded between the column 2 and the lock head 3. The second end of the lever arm 9 is connected to a traction rope 10. The traction rope 10 passes around the pulley block 11 on the column 2 and is connected to the counterweight box 8. The weight of the counterweight box 8 and the liquid inside it is transmitted to the second end of the lever arm 9 through the traction rope 10, causing the first end of the lever arm 9 to tend to move the lock head 3 away from the column 2.

[0026] In this embodiment, the output shaft of the wind turbine 5 is connected to the rotating shaft of the water pump 6 via a planetary gear transmission 37. The water pump 6 is a vane pump, and its rotating shaft passes through its housing. Since the specific structures and installation methods of the wind turbine 5, planetary gear transmission 37, and water pump 6 are well known to those skilled in the art, they will not be described in detail here. The liquid in the circulation path is pure water, antifreeze, or a mixture of both.

[0027] In windless conditions, the wind turbine 5 does not rotate, the water pump 6 stops supplying liquid to the counterweight box 8, and the liquid in the counterweight box 8 continues to flow back to the first storage tank 7 until the amount of liquid in the counterweight box 8 is reduced to its minimum. At this time, the force of the weight of the counterweight box 8 and the liquid inside it transmitted to the second end of the lever arm 9 through the traction rope 10 is also minimal.

[0028] Under windy conditions, the cable 1 is displaced and vibrates under the wind load. The wind turbine 5 is also driven by the wind load to rotate, which drives the water pump 6 to run and send the liquid in the first storage tank 7 into the counterweight tank 8. This increases the force transmitted from the counterweight tank 8 and the liquid inside it to the second end of the lever arm 9 through the traction rope 10.

[0029] Specifically, when the wind speed is high, the wind turbine 5 rotates faster, and the water pump 6 operates at a similarly higher speed. This results in a corresponding increase in the flow rate of liquid entering the counterweight box 8, increasing the weight of the liquid within the box. Consequently, this increases the force on the second end of the lever arm 9 via the traction rope 10. As the force on the second end of the lever arm 9 increases, the force exerted by the first end of the lever arm 9 on the lock head 3 also increases, not only improving the tension of the cable 1 but also raising its natural frequency.

[0030] Conversely, when the wind speed is low, the rotational speed of the wind turbine 5 decreases, and the operating speed of the water pump 6 decreases simultaneously. The flow rate of liquid entering the counterweight box 8 decreases accordingly, reducing the weight of the liquid inside the counterweight box 8. This, in turn, reduces the force on the second end of the lever arm 9 via the traction rope 10. When the force on the second end of the lever arm 9 decreases, the force exerted by the first end of the lever arm 9 on the lock head 3 also decreases, reducing not only the tension of the cable 1 but also its natural frequency.

[0031] The above constitutes the first stage of adjustment to the tension and natural frequency of the cable.

[0032] Preferably, this embodiment also includes a replenishment box 12, the bottom of which is connected to the counterweight box 8 via a switch valve 13, and the control lever 131 of the switch valve 13 has an open position and a closed position; When the control lever 131 is in the open position, the switch valve 13 is opened, and the liquid in the replenishment tank 12 can flow into the counterweight box 8 under the action of gravity through the switch valve 13; When the control lever 131 is in the closed position, the switch valve 13 is closed, and the liquid in the replenishment tank 12 cannot flow into the counterweight box 8 through the switch valve 13 under the action of gravity; The control lever 131 is linked to the output shaft of the wind turbine 5. When the angular acceleration of the output shaft of the wind turbine 5 is greater than the angular acceleration threshold, the control lever 131 remains in the open position until the water level in the replenishment tank 12 is less than the first water level threshold.

[0033] Understandably, when the wind speed increases to a certain value, the tension of cable 1 needs to increase to a matching target value, and the weight of the liquid in the counterweight box 8 also needs to increase to the corresponding target value. However, if the wind speed increases sharply, even if the rotational speeds of the wind turbine 5 and the water pump 6 have increased accordingly, the water pump 6 still needs a certain response time to replenish the liquid in the counterweight box 8 to the target weight. During this period, the actual tension of cable 1 will be less than the target tension required for the current wind speed, which could easily lead to a large and dangerous displacement of cable 1.

[0034] To address the aforementioned issues, when the wind speed increases dramatically, causing the angular acceleration of the output shaft of the wind turbine 5 to exceed the angular acceleration threshold, the control lever 131 will be triggered and held in the open position. At this time, the liquid in the replenishment tank 12 flows into the counterweight tank 8 under the influence of gravity through the switch valve 13, merging with the liquid pumped in by the water pump 6. Together, they increase the liquid inlet rate of the counterweight tank 8, shortening the time required for the liquid in the counterweight tank 8 to reach the target weight, thereby effectively preventing the cable 1 from undergoing significant displacement.

[0035] The above constitutes the second stage of adjustment to the tension and natural frequency of the cable.

[0036] Preferably, a drive shaft 14 is rotatably connected to the control lever 131, a flywheel 15 is slidably sleeved on the outer side of the drive shaft 14, a lower rotating ratchet 16 is provided on the drive shaft 14, and an upper rotating ratchet 17 that meshes with the lower rotating ratchet 16 is drivenly connected to the output shaft of the wind turbine 5. The differential rotation between the upper rotating ratchet 17 and the lower rotating ratchet 16 can push the control lever 131 from the closed position to the open position. The control lever 131 is connected to a first elastic element 18, which has a tendency to push the control lever 131 from the open position to the closed position.

[0037] In this embodiment, the upper rotating ratchet 17 is mounted on the rotating shaft of the water pump 6. The facing end faces of the upper rotating ratchet 17 and the lower rotating ratchet 16 are respectively provided with interlocking teeth. The first elastic member 18 applies an axial thrust to the lower rotating ratchet 16 via the control rod 131, causing the lower rotating ratchet 16 to tend to move closer to the upper rotating ratchet 17, thereby keeping the teeth of the two in an interlocking state.

[0038] Both the upper rotating ratchet 17 and the lower rotating ratchet 16 have a parallel side that is parallel to the center line of the drive shaft 14, and a bevel that intersects the center line of the drive shaft 14. When the ratchet teeth of the upper rotating ratchet 17 and the lower rotating ratchet 16 are engaged, the parallel sides of their ratchet teeth are aligned with each other, and the bevels are also aligned with each other.

[0039] When the wind speed is constant or increases slowly, the drive shaft 14 rotates synchronously with the rotating shaft of the water pump 6, and the teeth of the upper rotating ratchet 17 and the lower rotating ratchet 16 remain engaged, with the two relatively stationary.

[0040] When the wind speed increases sharply, the rotational speed of the water pump 6 increases rapidly, while the transmission shaft 14 maintains its original rotational speed due to the inertia of the flywheel 15. This causes the upper rotating ratchet 17 and the lower rotating ratchet 16 to rotate relative to each other in a counterclockwise direction. At this time, their inclined sides push against each other, and the lower rotating ratchet 16, guided by its inclined side, drives the control lever 131 to move downward against the elastic force of the first elastic element 18, thus moving the control lever 131 from the closed position to the open position.

[0041] When the wind speed decreases sharply, the upper rotating ratchet 17 and the lower rotating ratchet 16 cannot rotate relative to each other in the clockwise direction due to the axial limiting effect of the parallel edge of the ratchet. They rotate synchronously, and the control lever 131 remains in its current position.

[0042] Preferably, a locking ball 19 is movably connected to the replenishment box 12, a limiting groove 1311 corresponding to the locking ball 19 is opened on the control rod 131, and a limiting member 20 corresponding to the locking ball 19 is provided inside the replenishment box 12. The limiting member 20 has a locking position and an unlocking position. When the control lever 131 is in the open position and the limiting member 20 is in the locked position, the locking ball 19 is embedded in the limiting groove 1311, and the control lever 131 cannot move from the open position to the closed position. When the limiting member 20 is in the unlocked position, the locking ball 19 disengages from the limiting groove 1311, and the control lever 131 can reciprocate between the open position and the closed position; The limiting member 20 is connected to the float 21 and the second elastic member 22. The buoyancy generated by the float 21 has a tendency to push the limiting member 20 from the unlocked position to the locked position, and the second elastic member 22 has a tendency to push the limiting member 20 from the locked position to the unlocked position.

[0043] Understandably, when there is no wind, or when the wind speed is constant and increases slowly, the limiter 20 is in the unlocked position, the lock bead 19 disengages from the limit groove 1311, and the control lever 131 can move back and forth between the open and closed positions.

[0044] When the wind speed increases sharply and the water level in the replenishment tank 12 exceeds the first water level threshold, the control lever 131 moves from the closed position to the open position. At the same time, the buoyancy generated by the float 21 pushes the limiting member 20 from the unlocked position to the locked position, causing the locking ball 19 to engage in the limiting groove 1311, thereby locking the control lever 131 and keeping it in the open position.

[0045] As the liquid in the replenishment tank 12 flows into the counterweight tank 8 through the switch valve 13 under the action of gravity, when the water level in the replenishment tank 12 drops below the first water level threshold, the float 21 drops accordingly. The second elastic element 22 pushes the limiting element 20 from the locked position to the unlocked position, causing the locking ball 19 to disengage from the limiting groove 1311. The first elastic element 18 then pushes the control lever 131 from the open position to the closed position so that the above actions can be retried when encountering a sharp increase in wind speed.

[0046] Preferably, the outlet end of the water pump 6 is connected to a reversing valve 23, which has a first switching position and a second switching position; When the reversing valve 23 is in the first switching position, the outlet of the water pump 6 is connected to the counterweight box 8. At this time, the running water pump 6 will send the liquid in the first storage tank 7 into the counterweight box 8. When the reversing valve 23 is in the second switching position, the outlet of the water pump 6 is connected to the replenishment tank 12. At this time, the running water pump 6 will send the liquid in the first storage tank 7 into the replenishment tank 12.

[0047] Preferably, the outlet end of the water pump 6 is connected to a flow pipe 24, and a water collection shell 25 is provided on the outside of the flow pipe 24; A water leakage hole 241 is provided on the overflow pipe 24, and a tipping bucket 26 is hinged inside the water collecting shell 25. The tipping bucket 26 is provided with a first water storage chamber 261 and a second water storage chamber 262, and has a first steady-state position and a second steady-state position. When the tipping bucket 26 is in the first steady state position, the liquid in the second water storage chamber 262 flows away, and the liquid in the overflow pipe 24 flows into the first water storage chamber 261 through the water leakage hole 241. The gravity of the liquid in the first water storage chamber 261 tends to drive the tipping bucket 26 to rotate from the first steady state position to the second steady state position. When the tipping bucket 26 is in the second steady state position, the liquid in the first water storage chamber 261 flows away, and the liquid in the overflow pipe 24 flows into the second water storage chamber 262 through the water leakage hole 241. The gravity of the liquid in the second water storage chamber 262 tends to drive the tipping bucket 26 to rotate from the second steady state position to the first steady state position. The tipping bucket 26 is connected to a drive rod 27, which is connected to the control handle 231 of the reversing valve 23 via a transmission rod 28.

[0048] In this embodiment, the outlet of the water pump 6, the flow pipe 24, and the inlet of the reversing valve 23 are connected in sequence. Part of the liquid flowing through the flow pipe 24 flows to the tipping bucket 26 through the drain hole 241.

[0049] When the tipping bucket 26 is in the first steady-state position, the reversing valve 23 is in the first switching position. At this time, part of the liquid flowing through the flow pipe 24 flows into the first water storage chamber 261 through the drain hole 241. When the weight of the liquid in the first water storage chamber 261 reaches the set value, its gravity drives the tipping bucket 26 to rotate, causing the tipping bucket 26 to rotate from the first steady-state position to the second steady-state position. During this process, the tipping bucket 26 pushes the control handle 231 of the reversing valve 23 through the drive rod 27 and the transmission rod 28, causing the reversing valve 23 to switch from the first switching position to the second switching position.

[0050] When the tipping bucket 26 is in the second steady-state position, the reversing valve 23 is in the second switching position. At this time, some of the liquid flowing through the flow pipe 24 flows into the second water storage chamber 262 through the drain hole 241. When the weight of the liquid in the second water storage chamber 262 reaches the set value, its gravity drives the tipping bucket 26 to rotate, causing the tipping bucket 26 to rotate from the second steady-state position to the first steady-state position. During this process, the tipping bucket 26 pushes the control handle 231 of the reversing valve 23 through the drive rod 27 and the transmission rod 28, causing the reversing valve 23 to switch from the second switching position to the first switching position.

[0051] Thus, during the operation of the water pump 6, the tipping bucket 26 can rotate back and forth between the first steady-state position and the second steady-state position, thereby driving the reversing valve 23 to switch back and forth between the first switching position and the second switching position, so that the water pump 6 alternately delivers the liquid in the first storage tank 7 to the counterweight tank 8 and the replenishment tank 12.

[0052] Preferably, the bottom of the water collection shell 25 is connected to the first storage tank 7 via a water collection pipe 29, and the liquid in the water collection shell 25 can flow into the first storage tank 7 under the action of gravity.

[0053] Preferably, the bottom of the counterweight box 8 is provided with a first shut-off valve 30, and the opening degree of the first shut-off valve 30 is configured to be proportional to the water level in the counterweight box 8.

[0054] Specifically, the first shut-off valve 30 includes a first valve seat 301, a first valve hole 302 formed on the first valve seat 301, a first valve plug 303 for opening or closing the first valve hole 302, and a first spring 304 connected to the first valve plug 303. The water pressure inside the counterweight box 8 can push the first valve plug 303 downwards and compress the first spring 304, thereby opening the first valve hole 302. The elastic force of the first spring 304 is proportional to its compression amount, and the opening degree of the first shut-off valve 30 is proportional to the downward movement distance of the first valve plug 303.

[0055] As the wind speed increases, the liquid inlet rate of the counterweight box 8 also increases. In the initial stage of the increased wind speed, the compression of the first spring 304 and the opening of the first shut-off valve 30 remain unchanged, and the liquid discharge rate remains constant. At this time, the liquid inlet rate of the counterweight box 8 is greater than the liquid discharge rate, and the water level in the counterweight box 8 gradually rises, thereby increasing the water pressure acting on the first valve plug 303. The increased water pressure overcomes the elastic force of the first spring 304, pushing the first valve plug 303 further downward, causing the opening of the first shut-off valve 30 to increase, and the liquid discharge rate to increase accordingly. When the water level in the counterweight box 8 rises to a certain new height, the liquid discharge rate and the liquid inlet rate reach equilibrium again, and the water level in the counterweight box 8 stabilizes at this new height.

[0056] Through the aforementioned dynamic balancing mechanism, the weight of the liquid in the counterweight box 8 can maintain a positive correlation with the wind speed.

[0057] Preferably, the first shut-off valve 30 is connected to the first storage tank 7 through the first reflux pipe 31; The top of the replenishment box 12 is connected to the first storage box 7 via the first overflow pipe 32.

[0058] The specific working process of the first embodiment is as follows: In windy conditions, the wind turbine 5 is driven to rotate by the wind load, which in turn drives the water pump 6 to operate. During this process, the tipping bucket 26 controls the reversing valve 23 to switch back and forth between the first switching position and the second switching position, so that the water pump 6 alternately delivers the liquid in the first storage tank 7 to the counterweight tank 8 and the replenishment tank 12.

[0059] Assuming the current external wind speed remains constant, during the first switching position of the reversing valve 23, the water pump 6 delivers liquid from the first storage tank 7 to the counterweight tank 8, causing the water level in the counterweight tank 8 to reach and stabilize at the target height corresponding to the current wind speed. During the second switching position of the reversing valve 23, the switch valve 13 is closed; if the liquid in the replenishment tank 12 is full, the excess liquid will flow directly back to the first storage tank 7 through the first overflow pipe 32. During this period, the counterweight tank 8 stops receiving liquid, while the liquid inside continues to be discharged through the first shut-off valve 30. The water level in the counterweight tank 8 then slowly decreases, the weight of the liquid in the counterweight tank 8 decreases synchronously and slowly, and the tension and natural frequency of the cable 1 also decrease accordingly and slowly.

[0060] When the reversing valve 23 switches back to the first switching position, the water pump 6 resumes supplying liquid to the counterweight tank 8, causing the water level in the counterweight tank 8 to reach the target height again. This embodiment is preferably suitable for scenarios with low wind speeds.

[0061] As described above, when the wind speed increases sharply, the upper rotating ratchet 17 and the lower rotating ratchet 16 rotate counterclockwise relative to each other. Guided by the inclined side, the lower rotating ratchet 16 drives the control lever 131 to move downward against the elastic force of the first elastic element 18, moving the control lever 131 from the closed position to the open position. At the same time, the buoyancy generated by the float 21 pushes the limiting element 20 from the unlocked position to the locked position, causing the locking ball 19 to engage in the limiting groove 1311, thereby locking the control lever 131 and keeping it in the open position.

[0062] As the liquid in the replenishment tank 12 flows into the counterweight tank 8 under gravity through the switch valve 13, when the water level in the replenishment tank 12 drops below the first water level threshold, the float 21 descends accordingly. The second elastic element 22 pushes the limiting element 20 from the locked position to the unlocked position, causing the locking ball 19 to disengage from the limiting groove 1311. The first elastic element 18 then pushes the control lever 131 from the open position to the closed position, and the teeth of the upper rotating ratchet 17 and the lower rotating ratchet 16 re-engage. Subsequently, when the reversing valve 23 switches to the second switching position again, the operating water pump 6 delivers the liquid in the first storage tank 7 to the replenishment tank 12 so that the above actions can be retried when encountering a sudden increase in wind speed.

[0063] As attached Figure 3 The second embodiment of this application shown is basically the same as the first embodiment in terms of most of its structure. For the sake of brevity, the same features will not be described again. Only the features that are different from the first embodiment will be described below.

[0064] Understandably, when wind speed changes cause the excitation frequency of the wind load to approach the natural frequency of cable 1, due to the slow decrease in tension and natural frequency of cable 1 in the first embodiment, cable 1 requires a considerable amount of time to shift its natural frequency out of the danger zone. During this period, wind energy will continue to be efficiently input into cable 1. When the wind force is low, the input energy is relatively limited, and the harm is acceptable; however, when the wind force is high, the input wind energy during this period increases significantly, still posing a significant threat to cable 1.

[0065] To solve the above problems, in this embodiment, a second storage box 33 connected to the first storage box 7 is provided below the counterweight box 8, and a buffer chamber 801 connected to the first shut-off valve 30 is formed at the bottom of the counterweight box 8. A second shut-off valve 34 is provided at the bottom of the buffer chamber 801, and the second shut-off valve 34 is connected to the second storage box 33 through the second reflux pipe 35. The second shut-off valve 34 is configured to connect the buffer chamber 801 to the second storage tank 33 when the water level in the buffer chamber 801 exceeds the second water level threshold. The top of the replenishment box 12 is connected to the counterweight box 8 through the second overflow pipe 36.

[0066] Specifically, the second shut-off valve 34 includes a second valve seat 341, a second valve hole 342 opened on the second valve seat 341, a second valve plug 343 for opening or closing the second valve hole 342, a second spring 344 connected to the second valve plug 343, a fixed magnet 345 disposed on the second valve seat 341, and a movable magnet 346 disposed on the second valve plug 343. The fixed magnet 345 generates a magnetic attraction force on the movable magnet 346 to keep the second valve plug 343 in a closed state. During operation, when the water pressure in the buffer chamber 801 exerts a thrust on the second valve plug 343 that is greater than the sum of the elastic force of the second spring 344 and the magnetic attraction force between the fixed magnet 345 and the movable magnet 346, the water pressure pushes the second valve plug 343 downward, thereby opening the second valve hole 342. As the liquid in the buffer chamber 801 flows away, the water pressure in the buffer chamber 801 continues to decrease. When the force exerted by the water pressure on the second valve plug 343 is less than the sum of the elastic force of the second spring 344 and the magnetic attraction between the fixed magnet 345 and the moving magnet 346, the second valve plug 343 resets and re-closes the second valve hole 342.

[0067] The specific working process of the second embodiment is as follows: In windy conditions, the wind turbine 5 is driven to rotate by the wind load, which in turn drives the water pump 6 to operate. During this process, the tipping bucket 26 controls the reversing valve 23 to switch back and forth between the first switching position and the second switching position, so that the water pump 6 alternately delivers the liquid in the first storage tank 7 to the counterweight tank 8 and the replenishment tank 12.

[0068] Assuming the current external wind speed remains constant. During the first switching position of the reversing valve 23, the water pump 6 delivers liquid from the first storage tank 7 to the counterweight tank 8. During the second switching position of the reversing valve 23, the switch valve 13 is closed; if the replenishment tank 12 is full, excess liquid will also flow into the counterweight tank 8 through the second overflow pipe 36. After the liquid enters the counterweight tank 8, the liquid outside the buffer chamber 801 in the counterweight tank 8 enters the buffer chamber 801 through the first shut-off valve 30. When the water level in the buffer chamber 801 exceeds the second water level threshold, the second shut-off valve 34 opens, and the liquid in the buffer chamber 801 rapidly flows into the second storage tank 33 at a large flow rate. Simultaneously, the weight of the liquid in the counterweight tank 8 decreases sharply, and the tension and natural frequency of the cable 1 also decrease sharply accordingly.

[0069] It is understandable that this embodiment is preferably used in scenarios with high wind speeds.

[0070] The above constitutes the third level of adjustment to the tension and natural frequency of the cable.

[0071] This application enables the first, second, and third-level adjustment of the tension and natural frequency of cable 1, providing greater flexibility and allowing for adaptive adjustment of the tension and natural frequency of cable 1 according to changes in wind load.

[0072] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A photovoltaic panel mounting bracket, comprising cables and columns, characterized in that, One end of the cable passes through the post and is connected to a lock. It also includes an installation tower, on which a wind turbine is provided. The output shaft of the wind turbine is connected to a water pump. The inlet of the water pump is connected to a first storage tank, and the outlet of the water pump is connected to a counterweight box. A circulation path is formed between the first storage tank, the water pump, and the counterweight box. The wind turbine can drive the water pump to deliver the liquid in the first storage tank into the counterweight tank; The liquid in the counterweight box can flow into the first storage box under the action of gravity; A lever arm is hinged to the column. The first end of the lever arm is embedded between the column and the lock head. The second end of the lever arm is connected to a traction rope. The traction rope passes around the pulley block on the column and is connected to the counterweight box. The weight of the counterweight box and the liquid inside it is transmitted to the second end of the lever arm through the traction rope, causing the first end of the lever arm to tend to move the lock head away from the column.

2. The photovoltaic panel mounting bracket according to claim 1, characterized in that, It also includes a replenishment box, the bottom of which is connected to the counterweight box via a switch valve, the control lever of which has an open position and a closed position; When the control lever is in the open position, the switch valve is opened, and the liquid in the replenishment tank can flow into the counterweight box under the action of gravity through the switch valve; When the control lever is in the closed position, the switch valve is closed, and the liquid in the replenishment tank cannot flow into the counterweight box through the switch valve under the action of gravity; The control lever is linked to the output shaft of the wind turbine. When the angular acceleration of the output shaft of the wind turbine is greater than the angular acceleration threshold, the control lever remains in the open position until the water level in the replenishment tank is less than the first water level threshold.

3. A photovoltaic panel mounting bracket according to claim 2, characterized in that, A drive shaft is rotatably connected to the control lever, and a flywheel is slidably sleeved on the outer side of the drive shaft. A lower rotating ratchet is provided on the drive shaft, and an upper rotating ratchet that meshes with the lower rotating ratchet is driven to the output shaft of the wind turbine. The differential rotation between the upper rotating ratchet and the lower rotating ratchet can push the control lever from the closed position to the open position. The control lever is connected to a first elastic element, which has a tendency to push the control lever from the open position to the closed position.

4. A photovoltaic panel mounting bracket according to claim 3, characterized in that, A locking ball is movably connected to the replenishment box, and a limiting groove corresponding to the locking ball is opened on the control rod. A limiting member corresponding to the locking ball is provided inside the replenishment box, and the limiting member has a locking position and an unlocking position. When the control lever is in the open position and the limiting member is in the locked position, the locking ball is embedded in the limiting groove, and the control lever cannot move from the open position to the closed position; When the limiting member is in the unlocked position, the lock ball disengages from the limiting groove, and the control lever can reciprocate between the open and closed positions; The limiting member is connected to a float and a second elastic member. The buoyancy generated by the float has a tendency to push the limiting member from the unlocked position to the locked position, and the second elastic member has a tendency to push the limiting member from the locked position to the unlocked position.

5. A photovoltaic panel mounting bracket according to claim 2, characterized in that, The outlet end of the water pump is connected to a reversing valve, which has a first switching position and a second switching position. When the reversing valve is in the first switching position, the outlet of the water pump is connected to the counterweight box; When the reversing valve is in the second switching position, the outlet of the water pump is connected to the replenishment tank.

6. A photovoltaic panel mounting bracket according to claim 5, characterized in that, The outlet end of the water pump is connected to a flow pipe, and a water collection shell is provided on the outside of the flow pipe; The flow pipe is provided with a water leakage hole, and the water collection shell is hinged with a tipping bucket. The tipping bucket is provided with a first water storage chamber and a second water storage chamber, and has a first steady-state position and a second steady-state position. When the tipping bucket is in the first steady-state position, the liquid in the second water storage chamber flows out, and the liquid in the overflow pipe flows into the first water storage chamber through the drain hole. The gravity of the liquid in the first water storage chamber tends to drive the tipping bucket to rotate from the first steady-state position to the second steady-state position. When the tipping bucket is in the second steady-state position, the liquid in the first water storage chamber flows out, and the liquid in the overflow pipe flows into the second water storage chamber through the leakage hole. The gravity of the liquid in the second water storage chamber tends to drive the tipping bucket to rotate from the second steady-state position to the first steady-state position. The tipping bucket is connected to a drive rod, which is connected to the control handle of the reversing valve via a transmission rod.

7. A photovoltaic panel mounting bracket according to claim 6, characterized in that, The bottom of the water collection shell is connected to the first storage tank via a water collection pipe, and the liquid inside the water collection shell can flow into the first storage tank under the action of gravity.

8. A photovoltaic panel mounting bracket according to claim 2, characterized in that, The bottom of the counterweight box is equipped with a first shut-off valve, and the opening degree of the first shut-off valve is configured to be proportional to the water level in the counterweight box.

9. A photovoltaic panel mounting bracket according to claim 8, characterized in that, The first shut-off valve is connected to the first storage tank through the first reflux pipe; The top of the replenishment box is connected to the first storage box via a first overflow pipe.

10. A photovoltaic panel mounting bracket according to claim 8, characterized in that, Below the counterweight box is a second storage box that communicates with the first storage box. The bottom of the counterweight box forms a buffer chamber that is connected to the first shut-off valve. The bottom of the buffer chamber is provided with a second shut-off valve, which is connected to the second storage box through a second reflux pipe. The second shut-off valve is configured to connect the buffer chamber to the second storage tank when the water level in the buffer chamber exceeds a second water level threshold. The top of the replenishment box is connected to the counterweight box via a second overflow pipe.

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