A vibration reduction device for transmission towers and its working method

Abstract

This invention provides a vibration reduction device and operating method for transmission towers, relating to the field of transmission towers. Addressing the problem that current tuned mass dampers are difficult to adapt to vibration reduction in transmission towers, this invention uses a response amplification component to amplify the vibration motion of the transmission tower and transmit it to an energy dissipation component. This achieves a complete cycle of vibration signal capture, motion amplification, energy transfer, and energy dissipation. The response amplification component effectively captures and amplifies the small amplitude vibrations of the transmission tower, while the energy dissipation component dissipates vibration energy and resets the system through the compression and extension of a hydraulic cylinder. This avoids the dependence of traditional vibration reduction devices on large mass blocks and significantly improves damping performance, thereby solving the vibration control problem of transmission towers under extreme loads and improving vibration reduction efficiency and adaptability.

Description

Technical Field

[0001] This invention relates to the field of transmission towers, and more specifically to a vibration reduction device and its working method for transmission towers. Background Technology

[0002] Transmission towers, as critical infrastructure for power transmission, bear the important task of long-distance power transmission, and their structural safety is directly related to the stable operation of the power system. In actual operation, transmission towers are subjected to various external loads, especially under extreme disaster scenarios, such as strong winds where pulsating wind pressure causes significant wind-induced vibrations; and earthquakes where seismic waves trigger strong seismic responses in the tower structure. If these dynamic responses persist without effective control, they can lead to accumulated fatigue damage to the tower structure, potentially causing structural failure and collapse, significantly impacting the reliability of power supply. To mitigate transmission tower vibrations and ensure their safe operation, vibration control technology has received widespread attention and application. Traditional tuned mass dampers are a common passive vibration reduction device. They attach a subsystem with mass, stiffness, and damping to the main structure, tuning the subsystem's natural frequency to a specific vibration frequency of the main structure, thereby transferring the vibration energy of the main structure to the subsystem and achieving vibration reduction.

[0003] However, traditional tuned mass dampers have certain limitations in vibration reduction applications for transmission towers. To achieve a good vibration reduction effect, a large mass is often required. For tall structures like transmission towers, adding a large mass places higher demands on the tower's load-bearing capacity and overall stability, increasing the difficulty and cost of structural design and construction. Furthermore, the damping performance of traditional tuned mass dampers is relatively limited, making it difficult to efficiently achieve a small mass with large damping. When facing complex and variable extreme loads such as strong wind pulsating pressure or seismic wave input, especially reciprocating oscillations, the vibration reduction efficiency and adaptability are insufficient, failing to fully meet the vibration reduction performance requirements of transmission towers. Summary of the Invention

[0004] In view of this, the present invention provides a vibration reduction device and working method for transmission towers, which avoids the problem of traditional vibration reduction devices requiring large mass blocks and improves vibration reduction efficiency and adaptability.

[0005] The first objective of this invention is to provide a vibration reduction device for transmission towers, which adopts the following solution:

[0006] Includes vibration damping units, which include:

[0007] The response amplification component includes a first winding component and a second winding component. One end of the first steel cable is wound on the first winding component, and the other end is connected to the transmission tower. One end of the second steel cable is wound on the second winding component. Rotational motion is transmitted between the first winding component and the second winding component through a transmission mechanism.

[0008] The energy-consuming component includes a housing, a lead screw rotatably connected to the housing at both ends, and an active nut slider and a driven nut slider that cooperate with the lead screw. The other end of the second steel cable is connected to the active nut slider to drive it to move along the lead screw axis. A hydraulic cylinder that extends and retracts along the lead screw axis is connected between the driven nut slider and the housing. The hydraulic cylinder is used to receive the action of the driven nut slider to compress and store energy and consume it, or to extend and release to drive the driven nut slider to drive the lead screw to rotate.

[0009] Furthermore, the hydraulic cylinder includes a first housing connected to the driven nut slider and a second housing slidably sleeved outside the first housing. The cavity inside the first housing is divided by a slidingly engaged piston into a first liquid cavity near the second housing and an air cavity away from the second housing. The second housing is connected to the housing and forms a second liquid cavity inside. The first liquid cavity and the second liquid cavity are filled with damping fluid. The first housing has a damping fluid hole that connects the first liquid cavity and the second liquid cavity.

[0010] Furthermore, a blade is rotatably mounted inside the damping fluid hole. When the hydraulic cylinder compresses or extends, the piston adjusts its position relative to the first outer shell to change the volume of the first fluid chamber, the second fluid chamber, and the air chamber.

[0011] Furthermore, the vibration damping unit is provided in multiple units, and the two vibration damping units corresponding to the two first steel cables connected at opposite corners of the transmission tower form a group.

[0012] Furthermore, an energy-consuming disk is rotatably installed inside the housing of the energy-consuming component. The energy-consuming disk is connected to a lead screw via a gear set. A permanent magnet is installed on the energy-consuming disk. The energy-consuming disks corresponding to the two vibration damping units in the same group are coaxially distributed, and the opposite magnetic poles of the permanent magnets on the two energy-consuming disks are distributed opposite to each other to form magnetic coupling. When one energy-consuming disk rotates, it can drive the energy-consuming disk corresponding to the other vibration damping unit in the same group to rotate.

[0013] Furthermore, a conductive ring is installed on the outer circumference of the energy-consuming disk, and permanent magnets are installed on the top and bottom surfaces of the box, respectively. The conductive ring rotates with the energy-consuming disk to cut the magnetic field lines of the permanent magnets on the box to form eddy currents.

[0014] Furthermore, the transmission mechanism is a synchronous belt mechanism. The first winding member is coaxially connected to the first synchronous pulley of the synchronous belt mechanism and rotates together. The second winding member is coaxially connected to the second synchronous pulley of the synchronous belt mechanism and rotates together. The first synchronous pulley and the second synchronous pulley are driven by a synchronous belt to control the transmission ratio between the first winding member and the second winding member.

[0015] Furthermore, the housing has multiple housing openings around the lead screw. The other end of the second steel cable is divided into multiple strands and passes through the corresponding housing openings, establishing a connection with the active nut slider. The first steel cable is equipped with a guide pulley to guide the first steel cable from the position of connecting the transmission tower to the first winding component.

[0016] A second objective of the present invention is to provide a method for operating a transmission tower vibration damping device, comprising the following:

[0017] When the transmission tower sways, the tower pulls the first steel cable connected to it, and the first steel cable causes the first winding component to rotate.

[0018] The first winding component drives the second winding component to rotate through the transmission mechanism, thereby amplifying the motion. The second winding component winds the second steel cable, which in turn pulls the active nut slider.

[0019] The second steel cable pulls the active nut slider to move along the screw axis, forcing the screw to rotate. The rotation of the screw then drives the driven nut slider to move along the axis, compressing the hydraulic cylinder. The kinetic energy of the vibration is converted into heat energy and dissipated, realizing vibration reduction, energy dissipation and force storage.

[0020] When the tension decreases or the system needs to reset, the hydraulic cylinder uses its stored energy to extend and release, pushing the driven nut slider, which in turn drives the lead screw to rotate in the opposite direction, resetting the device and preparing it to cope with the next vibration.

[0021] Furthermore, the vibration damping unit is provided in multiple units. The two vibration damping units corresponding to the two first steel cables connected at opposite corners of the transmission tower form a group, and the vibration damping units in the same group work together to dampen vibration and dissipate energy.

[0022] Compared with the prior art, the advantages and positive effects of this invention are:

[0023] To address the current problem of tuned mass dampers being difficult to adapt to transmission tower vibration reduction, a response amplification component is used to amplify the vibration motion of the transmission tower and transmit it to the energy dissipation component. This achieves a complete cycle of vibration signal capture, motion amplification, energy transfer, and energy dissipation. The response amplification component effectively captures and amplifies the small amplitude vibrations of the transmission tower, while the energy dissipation component dissipates the vibration energy and resets the system through the compression and extension of hydraulic cylinders. This avoids the dependence of traditional vibration reduction devices on large mass blocks and significantly improves damping performance, thereby solving the vibration control problem of transmission towers under extreme loads and improving vibration reduction efficiency and adaptability.

[0024] During the compression or extension process of the hydraulic cylinder, the blades within the damping fluid orifice rotate due to the fluid flow. This not only increases the eddy current effect of the fluid but also enhances the resistance of the fluid passing through the orifice, thereby improving energy dissipation. Simultaneously, the piston's movement directly alters the volume ratio of the first and second liquid chambers and the air chamber. This dynamic change creates a synergistic effect between the fluid flow and the blade response, improving the efficiency of vibration energy conversion. Since the piston position directly affects the chamber volume, the damping fluid flow drives the air chamber to change volume to store energy, facilitating subsequent repositioning. Based on this, the damping effect of the damping fluid, combined with the overall structure of the hydraulic cylinder, effectively improves the energy dissipation performance of the vibration reduction device, meeting the high-efficiency vibration reduction requirements of transmission towers.

[0025] When the lead screw rotates, its motion is transmitted to the energy-dissipating disk through the gear set, causing the energy-dissipating disk to rotate. During the rotation, the permanent magnets installed on the energy-dissipating disk form a layout with opposite magnetic poles opposite to the permanent magnets on the corresponding energy-dissipating disk of another vibration damping unit in the same group, thereby generating a continuous magnetic coupling effect between the two. This allows the rotation of one energy-dissipating disk to drive the rotation of the other energy-dissipating disk, mobilizing the energy-dissipating components of the other energy-dissipating disk to dissipate energy together and improve the overall vibration damping efficiency.

[0026] The energy-consuming disk rotates together with the lead screw. The conductive ring on its outer circumference cuts the magnetic field lines generated by the permanent magnet on the box, forming eddy currents. When the eddy currents flow in the conductive ring, they generate heat, thus converting the vibration energy into heat energy and consuming it, thereby improving the energy consumption efficiency. Attached Figure Description

[0027] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0028] Figure 1 This is a schematic diagram of the transmission tower vibration reduction device installed on the transmission tower in Embodiments 1 and 2 of the present invention.

[0029] Figure 2 for Figure 1 A cross-sectional view at point AA.

[0030] Figure 3 This is a schematic diagram of the internal structure of the energy-consuming component in Embodiments 1 and 2 of the present invention.

[0031] Figure 4 for Figure 3 A cross-sectional view of section BB.

[0032] Figure 5 This is a schematic diagram of the response amplification component in Embodiments 1 and 2 of the present invention.

[0033] Figure 6 This is a schematic diagram of the synchronous belt mechanism in Embodiments 1 and 2 of the present invention.

[0034] Figure 7 This is a schematic diagram of the first steel cable on the transmission tower in Embodiments 1 and 2 of the present invention.

[0035] Among them, 1. First steel cable; 2. Guide pulley; 3. Response amplification component; 31. Response amplification component base; 32. Drive shaft; 33. Driven shaft; 34. First winding component; 35. First synchronous pulley; 36. Second winding component; 37. Second synchronous pulley; 38. Toothed synchronous belt; 4. Energy dissipation component; 41. Housing; 42. Housing opening; 43. Hydraulic cylinder; 431. Second outer shell; 432. First liquid chamber; 433. Damping liquid hole; 434. Blade; 435. Second liquid chamber ; 436, Piston; 437, Air Chamber; 438, First Outer Shell; 439, Sleeve; 44, Ball Screw; 441, Driving Nut Slider; 442, Screw; 443, Driven Nut Slider; 45, Energy Consumption Disk; 46, First Permanent Magnet; 47, Second Permanent Magnet; 48, Conductive Ring; 410, Gear Set; 411, Support Rod; 412, Bearing; 413, Third Permanent Magnet; 414, Fourth Permanent Magnet; 5, Wheel Frame; 6, Connecting Rod; 7, Second Steel Cable; 8, Ball Joint; 9, Pulley. Detailed Implementation

[0036] Example 1

[0037] In a typical embodiment of the present invention, such as Figures 1-7 As shown, a vibration reduction device for transmission towers is presented.

[0038] Current passive vibration damping devices are poorly adapted to tall structures like transmission towers, making it difficult to meet the vibration damping performance requirements of transmission towers. Based on this, this embodiment provides a transmission tower vibration damping device that uses a "response amplification component 3" to convert the vibration of the transmission tower into high-speed internal motion. Mechanical efficiency is used to replace the physical mass accumulation. Combined with "screw 442 transmission" and "hydraulic cylinder 43", the large-amplitude mechanical motion is converted into heat dissipation. The hydraulic cylinder 43 has the dual functions of "compression and storage" and "extension and release". With the reversible motion of the screw 442, the device can not only passively dissipate energy, but also achieve automatic reset during the vibration reciprocating process, thereby better adapting to the large-amplitude, reciprocating dynamic response caused by strong winds or earthquakes.

[0039] like Figures 1-7 As shown, the transmission tower vibration reduction device includes a vibration reduction unit, which mainly includes a response amplification component 3 and an energy dissipation component 4.

[0040] The response amplification component 3 includes a first winding component 34 and a second winding component 36. One end of the first steel cable 1 is wound on the first winding component 34, and the other end is connected to the transmission tower. One end of the second steel cable 7 is wound on the second winding component 36. The first winding component 34 and the second winding component 36 transmit rotational motion through a transmission mechanism. The response amplification component 3 is fixed on the ground at the installation location of the transmission tower by the response amplification component base 31.

[0041] The energy-consuming component 4 includes a housing 41, a lead screw 442 rotatably connected to the housing 41 at both ends, and a driving nut slider 441 and a driven nut slider 443 cooperating with the lead screw 442. The other end of the second steel cable 7 is connected to the driving nut slider 441 to drive it to move axially along the lead screw 442. A hydraulic cylinder 43, which extends and retracts axially along the lead screw 442, is connected between the driven nut slider 443 and the housing 41. The hydraulic cylinder 43 is used to receive the action of the driven nut slider 443, compress and store energy, or extend and release to drive the driven nut slider 443 to rotate the lead screw 442. One end of the lead screw 442 is mounted on the inner wall of the housing 41 through a sleeve 439. Figure 3 As shown. In this embodiment, the lead screw 442 can be a ball screw 44.

[0042] like Figure 1 and Figure 6 As shown, the first winding member 34 and the second winding member 36 in the response amplification assembly 3 are mechanical components used to realize motion transmission and amplification. The first winding member 34 and the second winding member 36 can adopt structures such as take-up drums, take-up rollers, and winding drums, and can rotate around their own axes respectively. They are provided with spiral grooves to guide the winding process. The first steel cable 1 is wound along the guide spiral groove on the first winding member 34. When the first steel cable 1 is tensioned, it drives the first winding member 34 to rotate, causing part of the first steel cable 1 to be released from the first winding member 34, thereby driving the second winding member 36 to rotate through the transmission mechanism. The second steel cable 7 is wound along the guide spiral groove on the second winding member 36. When the second winding member 36 is driven to rotate by the first winding member 34, part of the second steel cable 7 can be wound onto the second winding member 36, realizing the pulling effect on the free end of the second steel cable 7, and meeting the requirements of pulling the active nut slider 441.

[0043] The transmission mechanism can be implemented using gear sets, sprocket and chain mechanisms, or worm gear mechanisms. When a gear set is used, the first winding element 34 and the second winding element 36 are coaxially connected to gears of different sizes, and the rotational motion is transmitted and amplified through gear meshing. When a sprocket and chain mechanism is used, the first winding element 34 and the second winding element 36 are coaxially connected to sprockets, and the motion is transmitted through chain meshing. The transmission mechanism can also consist of a belt and pulleys, and the motion is transmitted through belt tension and friction, all of which can meet the motion transmission requirements between the first winding element 34 and the second winding element 36.

[0044] The hydraulic cylinder 43 in the energy dissipation component 4 can dissipate and store energy in various ways. Through the coordinated design of the response amplification component 3 and the energy dissipation component 4, the shortcomings of traditional vibration reduction devices, such as reliance on large mass blocks and low damping efficiency, are overcome. Specifically, the response amplification component 3 uses a transmission mechanism to amplify the small vibrations of the transmission tower into large-amplitude movements, solving the problem that small-amplitude vibrations are difficult to drive energy dissipation components. The energy dissipation component 4 dissipates energy through the hydraulic cylinder 43 and can also achieve a reset function, avoiding the shortcomings of traditional devices that require external energy for reset, and significantly improving the vibration control capability of the transmission tower under extreme loads.

[0045] When the transmission tower vibrates under extreme loads such as strong winds or earthquakes, one end of the first steel cable 1 is connected to the transmission tower, and the other end is wound around the first winding member 34. Thus, the vibration displacement of the transmission tower is directly transmitted to the first winding member 34, causing it to rotate. The rotational motion is transmitted between the first winding member 34 and the second winding member 36 through a transmission mechanism. This transmission mechanism amplifies the rotation of the first winding member 34 and transmits it to the second winding member 36, thereby achieving motion amplification. The rotation of the second winding member 36 further pulls the second steel cable 7, the other end of which is connected to the active nut slider 441. This converts the amplified rotational motion into linear motion, driving the active nut slider 441 to move axially along the lead screw 442.

[0046] The axial movement of the active nut slider 441 forces the lead screw 442 to rotate, and the rotation of the lead screw 442 drives the driven nut slider 443 to move axially. A hydraulic cylinder 43 is connected between the driven nut slider 443 and the housing 41. When the driven nut slider 443 moves, the hydraulic cylinder 43 is compressed or stretched. During compression, the gas inside the hydraulic cylinder 43 is compressed, thereby converting the kinetic energy of the vibration into the internal energy inside the hydraulic cylinder 43, and dissipating the vibration energy through the damping effect generated by the flow of damping fluid partially filled inside the hydraulic cylinder 43. When the vibration weakens or the system needs to be reset, the hydraulic cylinder 43 extends and releases using the stored energy, pushing the driven nut slider 443 to move in the opposite direction, which in turn drives the lead screw 442 to rotate in the opposite direction, restoring the entire device to its initial state to cope with the next vibration. In this embodiment, in order to achieve the opposite or reverse movement of the active nut slider 441 and the driven nut slider 443, the first threaded section of the lead screw 442 that engages with the active nut slider 441 and the second threaded section that engages with the driven nut slider 443 have opposite rotation directions.

[0047] like Figure 2 , Figure 3 and Figure 4As shown, the hydraulic cylinder 43 includes a first housing 438 connected to the driven nut slider 443 and a second housing 431 slidably sleeved outside the first housing 438. The cavity inside the first housing 438 is divided by a slidingly engaged piston 436 into a first liquid chamber 432 near the second housing 431 and an air chamber 437 away from the second housing 431. The second housing 431 is connected to the housing 41 and forms a second liquid chamber 435 inside. The first liquid chamber 432 and the second liquid chamber 435 are filled with damping fluid. The first housing 438 has a damping fluid hole 433 that connects the first liquid chamber 432 and the second liquid chamber 435.

[0048] Specifically, the first outer shell 438 is a shell structure directly connected to the driven nut slider 443. It can be made of metal to ensure sufficient strength and rigidity, enabling power transmission between the hydraulic cylinder 43 and the driven nut slider 443. The second outer shell 431 is a shell sleeved outside the first outer shell 438. It can be fixed on the housing 41 to maintain its position. It provides external support and guidance through a sliding fit to prevent displacement during compression or elongation.

[0049] The first liquid cavity 432 and the second liquid cavity 435 refer to the liquid-containing spaces located inside the first outer shell 438 and the second outer shell 431, respectively. Controllable liquid flow can be achieved through precisely machined sealing structures. Therefore, the first outer shell 438 serves as the outer shell for the first liquid cavity 432 and the air cavity 437, and the second outer shell 431 serves as the outer shell for the second liquid cavity 435. A damping liquid orifice 433 is formed on the first outer shell 438 as a channel connecting the first liquid cavity 432 and the second liquid cavity 435. The orifice size can be configured according to damping requirements to control the liquid flow rate, thereby achieving a precise configuration of the damping effect.

[0050] When the transmission tower vibrates, the driven nut slider 443 transmits motion to the first housing 438 connected to it, causing the piston 436 to move relative to the piston within the first housing 438. This results in controlled flow of damping fluid between the first liquid chamber 432 and the second liquid chamber 435 through the damping fluid hole 433. The viscous properties of the fluid generate damping force, effectively dissipating vibration energy. Simultaneously, the air chamber 437 provides a buffering effect, allowing the hydraulic cylinder 43 to maintain smooth operation during compression and extension, and to store energy for later reset. The connection between the second housing 431 and the housing 41 not only expands the damping area but also increases the overall structural stability. When the hydraulic cylinder 43 is used in conjunction with components such as the lead screw 442 and the driven nut slider 441, it can convert and dissipate vibration energy, improving the adaptability and reliability of the entire vibration damping device.

[0051] like Figure 4As shown, a blade 434 is rotatably mounted inside the damping fluid hole 433. When the hydraulic cylinder 43 is compressed or extended, the piston 436 adjusts its position relative to the first housing 438 to change the volume of the first fluid chamber 432, the second fluid chamber 435 and the air chamber 437.

[0052] Specifically, the blade 434 can be driven to rotate and generate resistance by the damping fluid, and can be of the blade type, helical type, or other forms. Its purpose is to enhance the energy dissipation effect when the fluid passes through the damping fluid hole 433. The piston 436 adjusts its position relative to the first outer shell 438 by dynamically changing the cavity volume through the axial movement of the piston 436. After the hydraulic cylinder 43 is pressurized and the damping fluid in the second liquid cavity 435 enters the first liquid cavity 432 through the damping fluid hole 433, the volume of the first liquid cavity 432 gradually increases, thereby pushing the piston 436 to move closer to the air cavity 437, so that the volume of the air cavity 437 is compressed and energy is stored.

[0053] During the compression or extension process of the hydraulic cylinder 43, the impeller 434 inside the damping fluid orifice 433 rotates due to the fluid flow. This rotation not only increases the eddy current effect of the fluid but also significantly increases the resistance of the fluid passing through the orifice, thereby enhancing the energy dissipation capacity. Simultaneously, the movement of the piston 436 directly alters the volume ratio of the first liquid chamber 432, the second liquid chamber 435, and the air chamber 437. This dynamic change allows the fluid flow and the impeller 434 response to work synergistically, improving the efficiency of vibration energy conversion.

[0054] like Figure 1 , Figure 2 As shown, there are multiple vibration damping units, four in this embodiment, divided into two groups. The two first steel cables 1 corresponding to the vibration damping units in the same group are connected to the diagonal positions of the transmission tower.

[0055] Specifically, vibration damping units are used to absorb and dissipate the vibration energy of transmission towers. The installation of multiple vibration damping units can expand the vibration damping coverage, thereby improving the overall vibration damping efficiency. Figure 2 As shown in the example, when the overall outline of the transmission tower is in the shape of a truncated pyramid or a square pyramid, the two first steel cables 1 corresponding to the vibration damping units in the same group are respectively connected to the diagonal positions of the transmission tower to prevent the transmission tower from twisting.

[0056] The introduction of multiple vibration damping units increases the number of damping points, enabling the transmission tower to dissipate energy simultaneously from multiple locations when subjected to complex vibrations, thus solving the problem that a single vibration damping unit cannot comprehensively cope with complex vibrations. Each group of vibration damping units is connected to the transmission tower at diagonal positions via two first steel cables 1, enabling synchronous response of the two steel cables when vibration occurs, improving damping efficiency, enhancing system stability, and effectively suppressing asymmetrical vibrations of the transmission tower.

[0057] like Figure 2 , Figure 3 and Figure 4 As shown, an energy-dissipating disk 45 is rotatably installed inside the housing 41 of the energy-dissipating component 4. The energy-dissipating disk 45 is connected to the lead screw 442 via a gear set 410. A permanent magnet is installed on the energy-dissipating disk 45. The energy-dissipating disks 45 corresponding to the two vibration damping units in the same group are coaxially distributed, and the opposite magnetic poles of the permanent magnets on the two energy-dissipating disks 45 are distributed opposite each other to form magnetic coupling, so as to drive the other energy-dissipating disk 45 to move through the magnetic attraction between the permanent magnets, thereby consuming energy in a coordinated manner.

[0058] In addition, a conductive ring 48 is installed on the outer circumference of the energy-dissipating disk 45, and permanent magnets are installed on the top and bottom surfaces of the housing 41 to cut the magnetic field lines of the permanent magnets on the housing 41 to form eddy currents. The energy-dissipating disk 45 is mounted on the housing 41 via a support rod 411 as a pivot. The energy-dissipating disk 45, in conjunction with the support rod 411 via a bearing 412, allows the energy-dissipating disk 45 to rotate around the axis of the support rod 411. The conductive ring 48 can be made of conductive metals or alloys such as copper or aluminum.

[0059] The energy-dissipating disk 45 is capable of converting mechanical energy into other forms of energy through rotational motion. It can be implemented using a disk structure made of engineering plastics or ceramics, providing an additional rotational energy-dissipating platform. The gear set 410 employs a hypoid gear pair with an offset configuration, including a first gear coaxially engaged with the lead screw 442 and a second gear coaxially engaged with the energy-dissipating disk 45. Motion transmission and amplification are achieved through the meshing of the hypoid gears, ensuring that the rotational energy of the lead screw 442 is transmitted to the energy-dissipating disk 45, and vice versa. The permanent magnet is a magnetic element made of a material with permanent magnetism, such as neodymium iron boron, which utilizes magnetic force to dissipate vibrational energy.

[0060] Specifically, by setting an energy-dissipating disk 45 inside the housing 41 of the energy-dissipating component 4, a path for dissipating vibration energy is provided. When the lead screw 442 rotates, its motion is transmitted to the energy-dissipating disk 45 through the gear set 410, causing the energy-dissipating disk 45 to rotate. The motion can also be amplified by configuring the transmission ratio. The permanent magnets mounted on the energy-dissipating disk 45 are arranged with alternating N and S poles at the ends facing the other energy-dissipating disk 45. Between the two opposing energy-dissipating disks 45, the N and S poles of the permanent magnets at opposite positions are aligned, forming a closed magnetic field loop. When one energy-dissipating disk 45 rotates, the magnetic field it generates will exert a magnetic pull on the permanent magnets on the other energy-dissipating disk 45, thereby forming a magnetic coupling transmission that drives the other set of energy-dissipating components 4 to dissipate energy in a coordinated manner. At the same time, the coaxial distribution of the energy-dissipating disks 45 of multiple vibration damping units ensures that each vibration damping unit can work effectively in coordination to share and dissipate the vibration energy of the transmission tower.

[0061] In addition, the energy-consuming disk 45 can also serve as an inertial capacitance element. By rotating under the drive of the lead screw 442 through the gear set, it generates an inertial reaction force far exceeding its own mass, thereby realizing dynamic adjustment of the system output and playing a damping and efficiency enhancement role.

[0062] like Figure 3 and Figure 4 As shown, the gear set 410 drives the energy-consuming disk 45 to rotate. Four first permanent magnets 46 are arranged on the top surface of the housing 41 with their N poles facing downwards. Four second permanent magnets 47 are arranged on the bottom surface of the housing 41 with their S poles facing upwards. Each energy-consuming disk 45 is equipped with four third permanent magnets 413 and four fourth permanent magnets 414. The third permanent magnets 413 and fourth permanent magnets 414 are arranged alternately. The N pole of the third permanent magnet 413 faces the other energy-consuming disk 45, and the S pole of the fourth permanent magnet 414 faces the other energy-consuming disk 45. When the energy-consuming disk 45 rotates, the conductive ring 48 arranged on it will cut the magnetic field lines of the first permanent magnets 46 on the upper surface and the second permanent magnets 47 on the lower surface of the housing 41, generating eddy currents on the conductive ring 48, thereby consuming energy.

[0063] To ensure timely response of the steel cable, it can be pre-tensioned. The energy-dissipating disk 45 has alternating third permanent magnets 413 and fourth permanent magnets 414 evenly arranged in the circumferential direction. Inside the housing 41, the two energy-dissipating disks 45 on the top will generate a magnetic coupling effect under the action of the third permanent magnets 413 and fourth permanent magnets 414 installed on them, forming a pair of magnetic coupling. The second steel cable 7 connected to them comes from the opposite corner of the transmission tower. When the transmission tower vibrates laterally or longitudinally, the movement trend of the opposite corner is always opposite, so the first steel cable 1 at the opposite corner will not be stretched at the same time. That is, only one of the pair of energy-dissipating disks 45 that establish magnetic coupling starts to rotate. The magnetic coupling pair structure has the force transmission characteristics, which can drive the other paired energy-dissipating disk 45 to rotate. While helping to dissipate its own energy, it can also tighten the steel cable connected to the other energy-dissipating disk 45. When the external excitation source (wind, earthquake) disappears, the transmission tower vibration damping device will return to its original state along with the transmission tower, and the tensioned steel cable will also restore its initial tension, thus preparing for the next energy dissipation operation. Furthermore, the two energy dissipation disks 45 are spatially adjacent and parallel. When the two energy dissipation disks 45 rotate synchronously under magnetic coupling, their corresponding lead screws 442 rotate in opposite directions, thereby achieving a push-pull action on the corresponding steel cable. The two energy dissipation disks 45 below the device form another set of magnetic coupling pairs under the magnetic coupling effect, and their operation is the same as that of the two energy dissipation disks 45 above.

[0064] like Figure 5 and Figure 6As shown, the transmission mechanism is a synchronous belt mechanism. The first winding member 34 is coaxially connected to the first synchronous pulley 35 of the synchronous belt mechanism and rotates together. The second winding member 36 is coaxially connected to the second synchronous pulley 37 of the synchronous belt mechanism and rotates together. The first synchronous pulley 35 and the second synchronous pulley 37 are driven by the synchronous belt to control the transmission ratio of the first winding member 34 and the second winding member 36.

[0065] Specifically, the synchronous belt mechanism, based on the principle of meshing transmission, offers advantages such as smooth transmission, low noise, and no need for lubrication. The coaxial connection between the first winding element 34 and the first synchronous pulley 35 ensures synchronous rotation between them. The coaxial transmission between the first winding element 34 and the first synchronous pulley 35 is established through the drive shaft 32, avoiding energy loss due to gaps or slippage. Similarly, the coaxial connection between the second winding element 36 and the second synchronous pulley 37 ensures the continuity and consistency of motion transmission. The coaxial transmission between the second winding element 36 and the second synchronous pulley 37 is established through the driven shaft 33. The synchronous belt is a toothed synchronous belt 38. The precise meshing of the toothed synchronous belt 38 with the first synchronous pulley 35 and the second synchronous pulley 37 allows for precise control of the transmission ratio between the first synchronous pulley 35 and the second synchronous pulley 37, thereby optimizing the motion amplification effect of the entire system. The drive shaft 32 and the driven shaft 33 are respectively mounted on the response amplification component base 31 via rotating supports.

[0066] like Figure 2 , Figure 3 As shown, the housing 41 has multiple housing openings 42 around the lead screw 442. The other end of the second steel cable 7 is divided into multiple strands and passes through the corresponding housing openings 42, and establishes a connection with the active nut slider 441. The first steel cable 1 is equipped with a guide pulley 2 so that the first steel cable 1 is guided from the position of connecting the transmission tower to the first winding member 34.

[0067] The housing opening 42 consists of multiple through holes arranged around the lead screw 442 on the housing 41. These openings can be circular, elliptical, or rectangular. In practical applications, the housing opening 42 is configured according to the diameter and number of steel cables to ensure that the stranded steel cables can pass through smoothly and be subjected to balanced force, distributing the tensile load and avoiding stress concentration at a single connection point.

[0068] like Figure 7As shown, the guide pulley 2 is a pulley 9 device installed on the path of the first steel cable 1. It can adopt a single-groove pulley 9 or a multi-groove pulley 9 structure. The appropriate type can be selected according to the number of steel cables and the complexity of the path. In this embodiment, the main body of the guide pulley 2 is the pulley 9. The wheel frame 5 of the pulley 9 is connected to the connecting rod 6. The end of the connecting rod 6 is installed on the transmission tower through the ball joint 8. The first steel cable 1 passes through the wheel frame 5 and the pulley 9 and contacts the pulley 9. The first steel cable 1 can abut against the pulley 9 and drive the pulley 9 to rotate, optimize the steel cable path, reduce bending friction and improve energy transfer efficiency.

[0069] Example 2

[0070] In another typical embodiment of the present invention, such as Figures 1-7 As shown, a method for operating a transmission tower vibration damping device is provided. Utilizing the transmission tower vibration damping device as described in Example 1, the method includes the following steps:

[0071] When the transmission tower sways, the transmission tower pulls the first steel cable 1 connected to it, and the first steel cable 1 drives the first winding component 34 to rotate.

[0072] The first winding element 34 drives the second winding element 36 to rotate through the transmission mechanism, thereby amplifying the motion. The second winding element 36 winds the second steel cable 7, thereby pulling the active nut slider 441.

[0073] The second steel cable 7 pulls the active nut slider 441 to move axially along the lead screw 442, forcing the lead screw 442 to rotate. The rotation of the lead screw 442 then drives the driven nut slider 443 to move axially, compressing the hydraulic cylinder 43. The kinetic energy of the vibration is converted into heat energy and dissipated, realizing vibration reduction, energy dissipation and power storage.

[0074] When the tension decreases or the system needs to be reset, the hydraulic cylinder 43 extends and releases using the stored energy, pushing the driven nut slider 443, which in turn drives the lead screw 442 to rotate in the opposite direction, so that the device is reset and ready to deal with the next vibration.

[0075] There are multiple vibration damping units. The two vibration damping units corresponding to the two first steel cables 1 connected at opposite corners of the transmission tower form a group, and the vibration damping units in the same group work together to dampen vibration and dissipate energy.

[0076] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A vibration damping device for transmission towers, characterized in that, Includes vibration damping units, which include: The response amplification component includes a first winding component and a second winding component. One end of the first steel cable is wound on the first winding component, and the other end is connected to the transmission tower. One end of the second steel cable is wound on the second winding component. Rotational motion is transmitted between the first winding component and the second winding component through a transmission mechanism. The energy-consuming component includes a housing, a lead screw rotatably connected to the housing at both ends, and an active nut slider and a driven nut slider that cooperate with the lead screw. The other end of the second steel cable is connected to the active nut slider to drive it to move along the lead screw axis. A hydraulic cylinder that extends and retracts along the lead screw axis is connected between the driven nut slider and the housing. The hydraulic cylinder is used to receive the action of the driven nut slider to compress and store energy and consume it, or to extend and release to drive the driven nut slider to drive the lead screw to rotate. An energy-consuming disk is rotatably installed inside the housing of the energy-consuming component. The energy-consuming disk is connected to a lead screw via a gear set. A permanent magnet is installed on the energy-consuming disk. The energy-consuming disks corresponding to the two vibration damping units in the same group are coaxially distributed, and the permanent magnets on the two energy-consuming disks with opposite magnetic poles are distributed opposite to each other to form magnetic coupling. When one of the energy-consuming disks rotates, it can drive the energy-consuming disk corresponding to the other vibration damping unit in the same group to rotate. A conductive ring is installed on the outer circumference of the energy-consuming disk, and permanent magnets are installed on the top and bottom surfaces of the box. The conductive ring rotates with the energy-consuming disk to cut the magnetic field lines of the permanent magnets on the box to form eddy currents.

2. The transmission tower vibration reduction device as described in claim 1, characterized in that, The hydraulic cylinder includes a first housing connected to a driven nut slider and a second housing slidably sleeved outside the first housing. The cavity inside the first housing is divided by a slidingly fitted piston into a first liquid cavity near the second housing and a gas cavity away from the second housing. The second housing is connected to a housing and forms a second liquid cavity inside. The first liquid cavity and the second liquid cavity are filled with damping fluid. The first housing has a damping fluid hole that connects the first liquid cavity and the second liquid cavity.

3. The transmission tower vibration reduction device as described in claim 2, characterized in that, A blade is rotatably mounted inside the damping fluid hole. When the hydraulic cylinder compresses or extends, the piston adjusts its position relative to the first outer shell to change the volume of the first fluid chamber, the second fluid chamber, and the air chamber.

4. The transmission tower vibration reduction device as described in claim 1, characterized in that, The vibration damping unit is provided in multiple units, and the two vibration damping units corresponding to the two first steel cables connected at opposite corners of the transmission tower form a group.

5. The transmission tower vibration reduction device as described in claim 1, characterized in that, The transmission mechanism is a synchronous belt mechanism. The first winding member is coaxially connected to the first synchronous pulley of the synchronous belt mechanism and rotates together. The second winding member is coaxially connected to the second synchronous pulley of the synchronous belt mechanism and rotates together. The first and second synchronous pulleys are driven by a synchronous belt to control the transmission ratio between the first and second winding members.

6. The transmission tower vibration reduction device as described in claim 1, characterized in that, The housing has multiple openings around the lead screw. The other end of the second steel cable is divided into multiple strands, which pass through the corresponding openings and establish a connection with the active nut slider. The first steel cable is equipped with a guide pulley to guide the first steel cable from the position of connecting the transmission tower to the first winding component.

7. A method for operating a transmission tower vibration damping device, utilizing the transmission tower vibration damping device as described in any one of claims 1-6, characterized in that, include: When the transmission tower sways, the tower pulls the first steel cable connected to it, and the first steel cable causes the first winding component to rotate. The first winding component drives the second winding component to rotate through the transmission mechanism, thereby amplifying the motion. The second winding component winds the second steel cable, thereby pulling the active nut slider. The second steel cable pulls the active nut slider to move along the screw axis, forcing the screw to rotate. The rotation of the screw then drives the driven nut slider to move along the axis, compressing the hydraulic cylinder. The kinetic energy of the vibration is converted into heat energy and dissipated, realizing vibration reduction, energy dissipation and force storage. When the tension decreases or the system needs to reset, the hydraulic cylinder uses its stored energy to extend and release, pushing the driven nut slider, which in turn drives the lead screw to rotate in the opposite direction, resetting the device and preparing it to cope with the next vibration.

8. The operating method of the transmission tower vibration reduction device as described in claim 7, characterized in that, The vibration damping unit is provided in multiple units. The two vibration damping units corresponding to the two first steel cables connected at opposite corners of the transmission tower form a group, and the vibration damping units in the same group work together to dampen vibration and dissipate energy.

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