Transmission conductor damping device and method

Abstract

The invention discloses a transmission conductor damping device and method, and the device comprises a fixed part which is disposed on a transmission conductor; the rotating part is arranged outside the fixed part in a sleeving manner and is rotationally connected with the fixed part; the driving part is rotationally arranged at the end, away from the power transmission line, of the fixing part; the limiting part is arranged on the driving part; the telescopic rotating part is arranged on the driving part, the telescopic rotating part is separated from limiting of the limiting part in the plumb bob direction under the action of wind power and rotates to droop, so that the telescopic rotating part abuts against the rotating part to drive the rotating part to rotate, and then the rotating part generates upward acting force to balance vibration force; and the telescopic rotating piece is separated from the rotating part. The telescopic rotating part drives the rotating part to rotate to generate upward acting force by utilizing vertically downward vibration force of the power transmission conductor, so that the vibration force of the conductor is balanced, and the vibration of the conductor in the vertical direction can be effectively inhibited.

Description

Technical Field

[0001] This invention belongs to the field of power system technology, specifically relating to a vibration reduction device and method for transmission lines. Background Technology

[0002] Aluminum alloy core conductors, with aluminum alloy as their core material, offer significant advantages such as high operating temperature, good heat resistance, excellent conductivity, and large current carrying capacity. These advantages effectively reduce energy loss during power transmission, making them more suitable for the demands of a low-carbon, environmentally friendly, and green development era. However, compared to steel core conductors, aluminum alloy core conductors have an elastic modulus that is only about one-third that of steel, and their toughness is significantly weaker. This makes them more prone to elasto-plastic deformation, leading to conductor fatigue damage, conductor breakage, and line tripping.

[0003] In some related technologies, vibration dampers are used; however, the vibration damping effect of vibration dampers is not ideal. Summary of the Invention

[0004] The purpose of this invention is to provide a power transmission line vibration damping device and method that, when the vibration force reaches a preset value, causes the elastic rotating member to detach from the horizontal limitation of the limiting part and droop down to contact the moving part, thereby driving the rotating part to rotate and causing the rotating part to generate a balancing force against the vibration force, thereby achieving an automatic vibration damping effect.

[0005] On the one hand, in order to achieve the above objectives, the present invention proposes a vibration damping device for power transmission lines, comprising: a fixed part disposed on the power transmission line; a rotating part sleeved on the outside of the fixed part and rotatably connected to the fixed part; a driving part rotatably disposed at the end of the fixed part away from the power transmission line; a limiting part disposed on the driving part; and a telescopic rotating member disposed on the driving part. Under the action of wind force, the telescopic rotating member disengages from the limiting part in the plumb direction and rotates downward, so that the telescopic rotating member abuts against the rotating part and drives the rotating part to rotate, thereby causing the rotating part to generate an upward force to balance the vibration force, until the telescopic rotating member disengages from the rotating part.

[0006] In one optional embodiment, the fixing part includes: a fixing base disposed on the power transmission line; a fixing rod connected at one end to the fixing base; wherein the rotating part is sleeved on the fixing rod, and the rotating part is movably connected to the fixing base so as to be able to rotate around the fixing rod.

[0007] In one alternative embodiment, the fixing base has a block-shaped structure.

[0008] In one alternative embodiment, the fixed base is disc-shaped.

[0009] In one alternative embodiment, the rotating part is magnetically connected to the fixed base.

[0010] In one alternative embodiment, the rotating part is made of a lightweight metal material.

[0011] In one alternative embodiment, the rotating part is made of aluminum alloy.

[0012] In one optional embodiment, the rotating part includes: a movable base; a sleeve, one end of which is connected to the movable base; and two crossbars symmetrically disposed at the end of the sleeve away from the movable base; wherein the sleeve and the movable base are provided with through holes, so that the movable base and the sleeve are sleeved on the fixed rod.

[0013] In one alternative embodiment, the movable base is integrally formed with the sleeve.

[0014] In one optional embodiment, the sleeve is a cylinder, the movable base is a disc-shaped structure, and the diameter of the sleeve is smaller than the diameter of the movable base.

[0015] In one optional embodiment, the drive unit includes a wind-powered bird repeller rotatably mounted on the top of the fixed rod. The wind-powered bird repeller includes: a rotating cylinder rotatably mounted on the top of the fixed rod; and a bird repeller rod, one end of which is connected to the rotating cylinder, and the other end of which extends away from the rotation.

[0016] In one optional embodiment, the limiting part is provided with a receiving space that extends along the axial direction of the bird deterrent rod, and the telescopic rotating member is disposed within the receiving space.

[0017] In one optional embodiment, the telescopic rotating member includes: a fixed structure connected to the fixed rod; an elastic member connected to the fixed structure at one end of its elastic extension; a gravity block connected to the other end of the elastic member; and a drive rod rotatably connected to the gravity block so as to be able to droop.

[0018] In one alternative implementation, the gravity block is spherical or cylindrical in shape.

[0019] In one optional embodiment, the wind-powered bird deterrent further includes: an upper limit block disposed above the rotating cylinder; and a lower limit block disposed below the rotating cylinder.

[0020] On the other hand, the present invention also proposes a method for vibration reduction of power transmission lines, comprising: setting a limiting part of the power transmission line vibration reduction device as described in any one of the claims at the length of the telescopic rotating member that sags due to wind force; installing the power transmission line vibration reduction device on the power transmission line, wherein the power transmission line vibration reduction device is arranged alternately above and below or aligned vertically above and below the power transmission line; when the power transmission line generates a downward vertical vibration force under the action of wind force, causing the telescopic rotating member to disengage from the limiting part in the vertical direction under the action of wind force and rotate to sag, so that the telescopic rotating member abuts against the rotating part and drives the rotating part to rotate, thereby causing the rotating part to generate an upward force to balance the vibration force, until the telescopic rotating member resets to disengage from the rotating part.

[0021] The beneficial effects of this invention are as follows: the transmission line vibration reduction device, through the coordinated action of the fixed part, rotating part, driving part, limiting part and telescopic rotating part, can achieve passive adaptive vibration reduction by relying on wind force and gravity. While dynamically balancing the vibration force of the conductor and reducing conductor fatigue damage, it does not require external power supply and frequent manual maintenance, is suitable for complex outdoor environments, and has a simple and reliable structural design. It can effectively extend the service life of related components of the transmission line and reduce operation and maintenance costs. Attached Figure Description

[0022] Figure 1 This is a front view of a power transmission line vibration damping device provided in an embodiment of the present invention when the vibration of the power transmission line has not reached the critical vibration level;

[0023] Figure 2 This is a front view of a power transmission line vibration damping device provided in an embodiment of the present invention when the vibration of the power transmission line reaches the critical vibration level;

[0024] Figure 3 This is a top view of a single wind-powered bird deterrent device of a power transmission line vibration reduction device according to an embodiment of the present invention;

[0025] Figure 4 This is a top view of a wind-powered bird deterrent device for a power transmission line vibration damping device according to an embodiment of the present invention;

[0026] Figure 5 This is a top view of the rotating part of a power transmission line vibration damping device according to an embodiment of the present invention.

[0027] Explanation of reference numerals in the attached drawings: 1-Wind-powered bird deterrent; 2-Horizontal bar; 3-Upper limit block; 4-Lower limit block; 5-Elastic element; 6-Gravity block; 7-Limiting part; 8-Drive rod; 9-Modible base; 10-Fixed base; 11-Power transmission line; 12-Fixed structure; 13-Sleeve; 14-Fixed rod. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] like Figure 1 and Figure 2 As shown, according to an embodiment of the present invention, in one aspect, a vibration damping device for a power transmission line is provided, comprising: a fixed part disposed on the power transmission line 11; a rotating part at least partially sleeved outside the fixed part and rotatably connected to the fixed part; a driving part rotatably disposed at the end of the fixed part away from the power transmission line; a limiting part 7 disposed on the driving part; and a telescopic rotating member disposed on the driving part, wherein the telescopic rotating member, under the action of wind force, disengages from the limiting part 7 in the plumb direction and rotates to a downward position, thereby causing the telescopic rotating member to abut against the rotating part and drive the rotating part to rotate, thereby causing the rotating part to generate an upward force to balance the vibration force, until the telescopic rotating member disengages from the rotating part.

[0030] In this embodiment, the fixing part is made of high-strength alloy material and is attached to the outer wall of the power transmission conductor 11. The fixing part is detachably fixed to the power transmission conductor 11 through a bolt assembly, ensuring that it remains relatively stationary during normal operation and vibration of the conductor, thus providing a stable installation foundation for the entire device.

[0031] The limiting part 7 can be set according to the design vibration amplitude of the transmission line 11, and its surface can be covered with a wear-resistant ceramic coating to reduce wear when in contact with the rotating part and extend its service life.

[0032] The rotating part is a hollow cylindrical wheel structure made of lightweight, high-strength composite material, which allows for smooth up and down sliding.

[0033] When the transmission line 11 is subjected to wind excitation and other forces in the natural environment, generating a vertically downward vibration, the line will drive the fixed part to move downward synchronously. When the wind speed reaches a certain value, the telescopic rotating member slides out of the limiting part 7. Under the action of gravity, the telescopic rotating member rotates to a vertical state. At this time, the driving part continues to rotate, and the telescopic rotating member comes into contact with the rotating part during synchronous rotation, thereby driving the rotating part to rotate. The rotation of the rotating part generates an upward lift force, which balances the downward vibration of the transmission line 11, achieving the purpose of vibration reduction. In this design, the horizontal wind load will not generate a vertical load on the rotating part. The rotation of the rotating part itself will increase the vertical resistance of the line, thereby preventing the lateral vibration of the line (perpendicular to the wind load direction). When the wind speed decreases, the rotation speed of the driving part decreases, and the centrifugal force on the telescopic rotating member decreases, causing the telescopic rotating member to turn back to a horizontal state under the action of tension and the limiting part 7, and be constrained by the limiting part 7 again. At this time, the telescopic rotating member is separated from the rotating part, and the rotating part will not rotate independently under the action of wind load, waiting for the next wind-driven cycle.

[0034] Through an automated workflow of "vibration triggering - limit contact - drive balancing - separation and reset", the vertical downward vibration force of the transmission conductor 11 can be responded to in real time. The upward force generated by the rotating part directly offsets the vibration force, which can prevent fatigue damage, strand breakage or insulator damage caused by long-term severe vibration of the conductor. This effectively reduces the operation and maintenance cost and fault risk of the transmission line and ensures the stability of power transmission.

[0035] The length of the limiting part 7 can be flexibly adjusted according to the design vibration parameters of the transmission line 11, so that the device can adapt to transmission lines of different voltage levels and different spans, without the need for separate design for specific lines, and has a wide range of applications.

[0036] The device adopts a mechanical transmission principle, eliminating the need for electric drive or complex electronic control systems. This avoids the failure of electronic components in harsh outdoor environments (such as high temperature, high humidity, and strong electromagnetic interference), resulting in a simple structure, low failure rate, and convenient maintenance. Furthermore, the core components are made of lightweight, high-strength materials, resulting in a light overall weight and minimal additional load on the transmission line 11. This eliminates the need for large-scale modifications to the existing line structure, leading to low installation costs.

[0037] The fixing part includes: a fixing base 10, which is disposed on the power transmission line 11; a fixing rod 14, one end of which is connected to the fixing base 10; wherein, the rotating part is sleeved on the fixing rod 14 and is movably connected to the fixing base 10 so as to be able to rotate around the fixing rod.

[0038] The fixed base 10 can be tightly fitted onto the power transmission line 11 and secured by bolts or clips. The base is made of high-strength aluminum alloy, which is both lightweight and corrosion-resistant, and can adapt to complex outdoor environments such as high and low temperatures, strong winds, rain and snow, ensuring the stability of the overall structure on the power transmission line 11 and preventing the base from shifting due to the shaking of the power transmission line.

[0039] The fixing rod 14 is a cylindrical solid rod made of the same material as the fixing base 10. One end is perpendicularly connected to the fixing base 10, and the other end extends to a preset height. The surface of the fixing rod 14 is precision machined to ensure the smoothness of the outer circumference, providing a smooth support for the mounting and rotation of the rotating part. At the same time, a wiring channel can be reserved inside the rod for laying the cables required by the drive part, improving the structural integration.

[0040] The rotating part is shaped like an annular sleeve 13, with an inner diameter matching the outer diameter of the fixed rod 14, allowing it to be tightly fitted onto the fixed rod 14. A detachable limiting component (such as an elastic pin or magnetic structure) is provided between its bottom and the fixed base 10. In the initial state, the limiting component movably connects the rotating part to the fixed base 10, ensuring the rotating part is stably supported on the fixed base 10 and preventing unexpected rotation without external force.

[0041] The drive unit can be driven by electromagnetic, wind, or motor, and a detachable transmission connection is established between it and the fixed rod of the fixed unit. When the equipment needs to remain stationary, the telescopic rotating component separates from the rotating part, and the rotating part is supported on the fixed base 10 to maintain a stable position. When the rotation function needs to be activated, if there is a natural vibration force in the external environment (such as strong wind causing the conductor or structure to vibrate), the vibration force can trigger the telescopic rotating component to disengage from the horizontal limit of the limiting part 7, causing the telescopic rotating component to rotate and droop under the action of gravity.

[0042] The rotating part is initially supported by the fixed base 10, which can prevent the equipment from rotating accidentally during transportation, installation or non-working phases.

[0043] Furthermore, the fixed base 10 has a block-shaped structure.

[0044] The bottom of the base body can be provided with an arc-shaped groove that matches the power transmission conductor 11, ensuring that the conductor can fit tightly. A 2-3mm thick silicone rubber anti-slip pad is pasted on the inside of the groove. The surface of the pad has a diamond-shaped anti-slip texture to increase the friction with the conductor and prevent the base from sliding along the conductor axis. At the same time, through bolt holes are symmetrically provided on both sides of the base, which are equipped with high-strength stainless steel bolts and arc-shaped pressure blocks. When the bolts are tightened, the pressure blocks can firmly fix the conductor in the groove. The inside of the pressure blocks is also provided with an anti-slip pad to prevent damage to the conductor insulation layer (if it is an insulated conductor) when the bolts are tightened.

[0045] The block structure provides a stable support center of gravity for the base. Combined with the arc-shaped groove and anti-slip pad, it can closely fit the power transmission wires 11 of different diameters, preventing the base from tipping over or shifting due to wire swaying (such as in strong winds). The fixing method of the bolts and pressure blocks on both sides can adjust the tightening force according to the actual size of the wire, ensuring both a firm fixation and compatibility with various specifications of power transmission wires 11, reducing the equipment's compatibility limitations with different wire models.

[0046] Furthermore, the fixed base 10 is disc-shaped.

[0047] An arc-shaped wire slot is provided at the center of the lower surface of the disk, and the radius of the slot matches that of the commonly used power transmission wire 11.

[0048] The central symmetry of the disc-shaped structure allows the force on the base to be evenly distributed across the entire disc surface, avoiding structural damage caused by localized stress concentration. The main body of the fixing base 10 is a flat disc with a smooth transition design at the edge, without sharp corners, to prevent scratches to operators or wire insulation during installation.

[0049] The rotating part is magnetically connected to the fixed base 10. Specifically, this is achieved by a strong magnetic component (such as a neodymium iron boron permanent magnet, which is embedded or surface-mounted to ensure precise and stable magnet positioning) pre-installed on the inner side of the rotating part, and a metal magnetic attraction component (such as a metal sheet made of iron, cobalt, or nickel alloy, or another set of permanent magnets with matching polarity) set at the corresponding position on the fixed base 10. No additional tools are required for assembly; simply bring the rotating part close to the fixed base 10, and the magnetic attraction will quickly complete the connection. After connection, the rotating part can rotate flexibly around the central axis of the fixed base 10, while the magnetic attraction maintains a stable fit between the two during rotation, preventing loosening or displacement. Furthermore, the rotating part and the fixed base 10 can be separated by applying a certain external force as needed, allowing for convenient disassembly.

[0050] The magnetic connection eliminates rigid mechanical contact, allowing for minor installation errors between the rotating part and the fixed base 10, resulting in greater adaptability.

[0051] Furthermore, combined Figure 1 and Figure 2 As shown, the rotating part includes: a movable base 9; a sleeve 13, one end of which is connected to the movable base 9; and two crossbars 4, symmetrically arranged at the end of the sleeve 13 away from the movable base 9; wherein the sleeve 13 and the movable base 9 are provided with through holes so that the movable base 9 and the sleeve 13 are sleeved on the fixed rod 14.

[0052] The movable base 9 is made of lightweight, high-strength materials (such as ABS engineering plastics and aluminum alloys). It has a disc-shaped or ring-shaped structure. Its bottom is magnetically connected to the fixed base 10 through a preset strong magnetic component to ensure stable docking. A circular through hole is opened in the center of the movable base 9. The inner wall of the through hole is smoothly polished (or a wear-resistant bushing, such as a polytetrafluoroethylene bushing, is embedded in it), which reduces the frictional resistance with the fixed rod 14 and avoids wear of the hole diameter due to long-term use.

[0053] The sleeve 13 is a hollow columnar structure, and its material is consistent with that of the movable base 9 to ensure structural compatibility. The inner diameter of the sleeve 13 is completely matched with the inner diameter of the through hole of the movable base 9, and their axes are completely coincident, forming a through hole channel of "movable base 9-sleeve 13". The length of the sleeve 13 can be flexibly designed according to the installation height of the fixed rod 14 to ensure that it can be stably sleeved on the fixed rod 14. At the same time, the outer wall of the sleeve 13 can be treated with anti-slip texture (to enhance the grip when manual adjustment is required).

[0054] like Figure 4As shown, the crossbar 4 is a long strip-shaped bar made of high-strength alloy or reinforced plastic, with a circular or elliptical cross-section (avoiding sharp edges). Two crossbars 4 are symmetrically welded or screwed to the outer wall of the sleeve 13 at the end furthest from the movable base 9, with the axis of the sleeve 13 as the center. The length and diameter of the crossbars 4 are designed according to the usage scenario (such as load-bearing requirements and operating radius). A circular anti-slip end (such as silicone material) can be added to the end of the crossbar 4 to prevent slippage or injury when holding it. The crossbars and sleeve 13 form a dragonfly structure.

[0055] The symmetrical crossbar 4 provides users with a clear point of force application, allowing them to easily push the rotating part to slide or rotate without directly contacting the sleeve 13, making operation more effortless.

[0056] Furthermore, the movable base 9 and the sleeve 13 are integrally set.

[0057] The integrated design eliminates the seams and weak points in the connection between the movable base 9 and the sleeve 13, improving the overall resistance to bending and impact. The integrated molding process precisely controls coaxiality and channel smoothness through the mold, avoiding misalignment and jamming issues caused by component deviations in assembled structures. Friction is also reduced when the rotating part slides or rotates along the fixed rod 14. The integrated molding ensures the flatness and stability of the bottom surface (magnetic contact surface) of the movable base 9, preventing tilting of the contact surface due to assembly deviations. This results in a tighter fit between the magnetic components of the movable base 9 and the fixed base 10, with a more uniform magnetic attraction distribution, preventing loosening or shifting of the magnetic attraction due to localized poor fit.

[0058] Furthermore, the sleeve 13 is a cylinder, and the movable base 9 is a disc-shaped structure. The diameter of the sleeve 13 is smaller than the diameter of the movable base 9.

[0059] The larger diameter of the disc-shaped movable base 9 provides a wider support surface and a larger contact area when magnetically connected with the fixed base 10, resulting in stronger magnetic stability.

[0060] The larger diameter of the disc-shaped movable base 9 allows for the integration of larger or more numerous magnets (such as ring magnets or multiple sets of small magnets) within the base, enhancing the magnetic attraction strength with the fixed base 10. Meanwhile, the smaller diameter of the sleeve 13 prevents it from occupying the installation space of the magnets within the base, ensuring sufficient layout area for the magnets and evenly distributing the magnetic force on the base. This avoids the risk of the rotating part accidentally falling off during use due to the base being too small, which would limit the size of the magnets and result in insufficient attraction.

[0061] Furthermore, the rotating part is made of lightweight metal. The low density of lightweight metal significantly reduces the overall weight while maintaining the structural strength of the rotating part, avoiding additional load on the transmission lines, adapting to different transmission line specifications, and reducing the risk of conductor deformation due to excessive load after installation. The low inertia of lightweight metal allows the rotating part to start rotating more quickly when subjected to the contact force of the telescopic rotating component, shortening the response time of the vibration damping force, balancing conductor vibration more promptly, and improving the real-time performance and effectiveness of vibration damping. Lightweight metals (such as aluminum alloys and magnesium alloys) possess good corrosion resistance and mechanical strength, adapting to the complex outdoor environment of wind, rain, and sun exposure, and withstanding the wear and tear from long-term rotation and contact, extending the service life of the rotating part and reducing the frequency of device maintenance.

[0062] Furthermore, the rotating part is made of aluminum alloy. Aluminum alloy has a density of only about 2.9 g / cm³ (far lower than steel's 9.8 g / cm³), which ensures the structural strength of the rotating part (meeting the mechanical requirements of contact and rotation) while keeping the weight of the rotating part at a very low level, completely avoiding adding extra load to the transmission line, and also preventing the rotating part from deforming due to its own weight.

[0063] Aluminum alloy surfaces easily form a dense oxide film, which can effectively resist outdoor humid, salt spray, acid rain and other corrosive environments. It is suitable for different power transmission scenarios such as coastal areas and mountainous areas. Long-term use is not prone to rust or damage, which greatly extends the maintenance-free cycle of the rotating parts.

[0064] The low inertia of aluminum alloys allows the rotating part to complete rapid rotation with less power loss when it is abutted by the telescopic rotating component, thus improving the response speed of the vibration damping force. At the same time, the machining precision of aluminum alloys is easy to control, which can ensure the aerodynamic shape of the rotating part and further optimize the output efficiency of the force during rotation.

[0065] Furthermore, the drive unit includes: a wind-powered bird deterrent 1, rotatably mounted at the top of the fixed rod 14; and a drive rod 8, located at the bottom of the wind-powered bird deterrent 1, with the drive rod 8 extending downwards. The wind-powered bird deterrent 1 can rotate autonomously using natural wind power, providing continuous power to the drive unit without the need for external power (such as batteries or power cords) or manual operation, thus completely eliminating energy consumption costs and wiring / battery replacement maintenance costs.

[0066] The drive rod 8 rotates synchronously with the wind-powered bird deterrent 1. The rotation of the wind-powered bird deterrent 1 (in conjunction with reflective and sound designs) can play a traditional bird deterrent role, preventing birds from stopping and nesting.

[0067] The drive rod 8 extends downward from the bottom of the wind-powered bird deterrent 1 and can directly and precisely connect with the crossbar 4 of the component to be driven below, shortening the power transmission path and reducing power loss. At the same time, the extended structure can prevent the wind-powered bird deterrent 1 from directly contacting the component below, preventing mutual interference during rotation and ensuring the stability and continuity of power transmission.

[0068] Furthermore, the wind-powered bird deterrent 1 includes: a rotating cylinder, rotatably mounted on the top of the fixed rod 14; and a bird deterrent rod, one end of which is connected to the rotating cylinder, and the other end of which extends away from the direction of rotation.

[0069] The rotating cylinder is mounted on the top of the fixed rod 14 and can rotate flexibly around the fixed rod 14. One end of the bird deterrent rod is connected to the rotating cylinder, and the other end extends away from the rotating cylinder, forming a radially unfolded structure of "rotating cylinder + extension rod". This can maximize the contact area with the airflow and capture wind energy to drive the rotating cylinder to rotate even in a light wind environment (such as level 1-2 wind). This avoids the bird deterrent from stopping due to insufficient wind and ensures that the outdoor bird deterrent effect is continuously effective.

[0070] Extending the bird deterrent pole away from the rotating drum can expand the bird deterrent range from the perimeter of the rotating drum to the area covered by the end of the pole, preventing birds from stopping and nesting in the protected area.

[0071] The rotating cylinder is connected to the fixed rod 14 through a simple sleeve or bearing structure, which can quickly adapt to fixed rods 14 of different diameters (such as adjusting the inner hole size of the rotating cylinder by changing the bushing); the length and number of bird deterrent rods (multiple rods can be set symmetrically) can also be flexibly designed according to protection requirements, and installation can be completed without complex modifications to the fixed rod 14, which has strong compatibility.

[0072] Furthermore, the wind-powered bird deterrent 1 also includes: an upper limit block 3, located above the rotating cylinder; and an upper limit block 4, located below the rotating cylinder.

[0073] The upper limit block 3 (above the rotating cylinder) and the upper limit block 4 (below the rotating cylinder) form an axial bidirectional constraint, which can accurately fix the position of the rotating cylinder on the fixed rod 14, preventing the rotating cylinder from moving upward or downward along the fixed rod 14 due to wind impact, vibration or long-term use, ensuring that the rotating cylinder always rotates stably at the preset height, and avoiding changes in the bird deterrence range or interference with other components (such as the drive rod 8) due to position deviation.

[0074] like Figure 3 As shown, a bird-repelling block is provided at the end of the bird-repelling pole away from the rotating cylinder. The bird-repelling block has a hemispherical structure. There are three bird-repelling poles, which are evenly distributed.

[0075] The curved surface of the hemispherical bird deterrent block can reflect light from multiple angles (such as sunlight and lamplight), producing stronger light and shadow changes compared to a flat structure. When rotated, the light spots reflected by the hemispherical surface will move irregularly, continuously stimulating the visual system of birds, effectively repelling birds that are sensitive to light and shadow, preventing them from staying and nesting in protected areas (such as power lines and orchards), and without relying on additional sound-generating components, making it suitable for noise-sensitive scenarios.

[0076] The hemispherical structure has no sharp edges, and its drag coefficient is much lower than that of regular geometric shapes such as squares and columns. When the bird deterrent rod rotates with the rotating drum, the hemispherical bird deterrent block can smoothly cut the airflow, reduce the lateral impact of the wind on the bird deterrent rod, and avoid the bird deterrent rod swaying or bending due to excessive wind resistance, or affecting the overall rotation efficiency of the rotating drum. This ensures that the wind-powered bird deterrent device 1 can operate stably even in strong winds.

[0077] Auxiliary bird-repelling components can be flexibly installed on the surface of the hemispherical object, such as attaching reflective film or applying coating to the curved surface.

[0078] The bird repellent (with its curved surface ensuring even coverage and preventing dripping) further enhances its bird-repelling effect.

[0079] Furthermore, the limiting part 7 is provided with a receiving space, which extends along the axial direction of the bird deterrent rod, and the telescopic rotating part is located in the receiving space.

[0080] The axially extended accommodating space can strictly limit the range of motion of the telescopic rotating parts, so that they can only complete the "limit-disengage-reset" action along the preset trajectory, completely eliminating the displacement and misalignment of the telescopic rotating parts caused by outdoor airflow turbulence and wire vibration, fundamentally avoiding component jamming, and ensuring stable operation of the vibration reduction cycle.

[0081] The enclosure can completely enclose the telescopic rotating parts, isolating them from outdoor wind, sand, rain, and impacts from foreign objects, reducing spring corrosion and wear on the gravity cylinder, significantly extending the service life of the core drive components, and reducing the frequency of device maintenance.

[0082] Furthermore, the telescopic rotating component includes: a fixed structure 12 connected to a fixed rod; an elastic element 5 connected to the fixed structure 12 at one end of its elastic telescopic extension; a gravity block 6 connected to the other end of the elastic element 5; and a drive rod rotatably connected to the gravity block 6 so as to be able to droop.

[0083] The fixed structure 12 serves as the mounting base for the telescopic rotating component and is rigidly connected to the fixed rod (or drive frame) of the device. Its structure is designed as a disc with buckles and positioning holes, which can accurately fix one end of the elastic component 5, ensuring that the elastic component 5 will not shift or fall off when it extends or retracts, and providing a stable support reference for the entire component.

[0084] The elastic element 5 is preferably a cylindrical helical spring with a high elastic coefficient. One end is firmly locked through the positioning hole of the fixing structure 12, and the other end is welded or bolted to the gravity block 6. In its natural state, the elastic element 5 is in a slightly compressed state, providing the initial reset force for the gravity block 6. When the gravity block 6 droops, the elastic element 5 is stretched and stores elastic potential energy. After the triggering condition disappears, it can quickly pull the gravity block 6 back to its original position.

[0085] The gravity block 6 is made of high-density metal (such as cast iron or brass) and its weight is precisely calculated to ensure that it can overcome the initial tension and limiting constraint of the elastic element 5 under wind power. The outer wall of the gravity block 6 is smoothed to reduce friction with the inner wall of the containing space.

[0086] The drive rod is a lightweight metal rod. One end is rotatably connected to the bottom of the gravity block 6 via a pin, while the other end is a free end with a rounded finish. When the gravity block 6 is released from its limit position, the drive rod can rotate freely around the pin to a fully drooping state. Its length is designed so that it can make contact with the rotating part (ultra-thin flat bamboo dragonfly structure) first after the gravity block 6 is in place, and transfer the force of the gravity block 6 to the rotating part through point contact.

[0087] The shape of gravity block 6 is spherical or cylindrical.

[0088] The curved / arc surface structure of the spherical or cylindrical gravity block 6 can transform the "surface contact" with the inner wall of the accommodating space into "line contact" or "point contact", which greatly reduces the frictional resistance during movement and avoids the component jamming due to excessive friction. At the same time, the smooth curved surface is not easy to accumulate dust and impurities, further reducing wear and ensuring that the gravity block 6 moves smoothly in the "drooping-resetting" cycle.

[0089] Compared to the angular block structure, the spherical and cylindrical gravity block 6 has no sharp edges. When it comes into contact with the drive rod, the impact force can be evenly distributed on the contact surface through the curved surface, avoiding local stress concentration that could cause deformation of the drive rod pin and extending the service life of the core components.

[0090] The spherical gravity block 6 can flexibly adjust the direction of force in 360°, and the cylindrical gravity block 6 can also adapt to the angle change along the axis. Even if the device has a slight angle shift due to the tilt of the power transmission line or installation error, both can still stably complete the descent action without strict calibration of the installation angle, reducing the difficulty of on-site construction and improving compatibility with different line environments.

[0091] Spherical and cylindrical shapes are mature basic forms in machining. They can be mass-produced through conventional processes such as casting and turning. The machining accuracy is easy to control and the cost is low. Compared with irregular structures, it can reduce material waste (for example, cylindrical shapes can be directly cut from metal bars), significantly reduce the manufacturing cost of gravity block 6, and facilitate the large-scale promotion of the device.

[0092] When the vibration of the transmission line 11 does not reach the critical vibration state, the line is in a safe state and does not require vibration reduction. The movable base 9 and the fixed base 10 are magnetic structures and have mutual attraction. The fixed base 10 is fixed on the line. At this time, the bamboo dragonfly structure cannot rotate, and the wind-powered bird deterrent device rotates continuously under the action of wind speed.

[0093] The bird deterrent device can be single or multiple. It rotates under wind load; the higher the wind speed, the faster it rotates, and the greater the centrifugal force on gravity block 6. Gravity block 6 is subjected to the tension of the telescopic spring and the centrifugal force. When the wind speed reaches a critical value, the centrifugal force exceeds the tension provided by the telescopic spring, causing gravity block 6 and drive rod 8 to move outward along the limiting part 7. Drive rod 8 can rotate freely around gravity block 6. When the wind speed reaches a certain value, drive rod 8 slides out of the limiting structure and rotates to a vertical position under gravity. Drive rod 8 then contacts the ultra-thin flat bamboo dragonfly structure, causing it to rotate. The ultra-thin flat bamboo dragonfly structure is a flat structure; horizontal wind loads do not exert vertical loads on it. The rotation of the ultra-thin flat bamboo dragonfly structure itself increases the vertical resistance of the conductor, thus preventing lateral vibration of the conductor (perpendicular to the wind load direction). When the wind speed decreases, the rotation speed of the wind-powered bird deterrent device 1 decreases, the centrifugal force on the gravity block 6 decreases, the tension of the telescopic spring is greater than the centrifugal force, and the drive rod 8 rotates back to the horizontal state under the action of the tension and the limiting part 7, and then retracts into the limiting structure. At this time, the bird deterrent device 1 is separated from the ultra-thin flat bamboo dragonfly structure, and the ultra-thin flat bamboo dragonfly structure will not rotate independently under the action of wind load.

[0094] The drive rod 8 drives the bamboo dragonfly structure to rotate. The rotating part of the bamboo dragonfly structure generates an upward lift, which balances the downward vibration of the power transmission line 11 and achieves the purpose of vibration reduction.

[0095] This invention proposes a method for vibration reduction of power transmission lines, comprising the following steps:

[0096] Step S101: Set the limiting part 7 of the transmission line vibration damping device to the length of the telescopic rotating part that sags due to the wind force and the weight of the telescopic rotating part.

[0097] Step S103: Install vibration damping devices on the transmission lines. The vibration damping devices are arranged alternately on the transmission lines or aligned vertically on the transmission lines.

[0098] Step S105: When the transmission line generates a downward vertical vibration force under the action of wind, the telescopic rotating member is disengaged from the limit part 7 in the vertical direction under the action of wind and rotates to hang down, so that the telescopic rotating member abuts against the rotating part and drives the rotating part to rotate, thereby causing the rotating part to generate an upward force to balance the vibration force, until the telescopic rotating member is reset to disengage from the rotating part.

[0099] This device can be arranged in an alternating or vertical manner to control the vibration state of 11 key points on the power transmission line.

[0100] The staggered or aligned arrangement of the vibration damping device can create dual or multiple constraints in the radial (vertical) direction of the transmission line 11: the staggered arrangement can specifically suppress the asymmetric vibration of the conductor (such as lateral swaying and torsional vibration), while the aligned arrangement can enhance the cancellation effect on the main vertical vibration of the conductor (such as wind vibration and galloping). Both can cover a wider range of vibration frequencies, avoid the vibration damping blind zone caused by single-location arrangement, and significantly reduce the risk of fatigue damage to the conductor caused by long-term vibration.

[0101] Transmission conductors 11 are subjected to gravity and wind forces over long periods of time. Installing vibration damping devices in a single location can easily lead to excessive local loads. Installing them vertically (whether staggered or aligned) can evenly distribute the weight and damping force of the devices across different sections of the conductor, preventing bending and strand breakage due to concentrated local forces. Especially when aligned, the forces from the upper and lower devices can balance each other, further reducing radial deformation of the conductor and extending its service life.

[0102] Under severe conditions such as strong winds and icing, conductors are prone to large-scale galloping or irregular vibrations. A staggered vertical arrangement can break the conductor's resonance tendency through "misalignment constraints" between devices; a aligned vertical arrangement can create a "synergistic vibration reduction" effect, enhancing the ability to suppress severe vibrations through synchronous action. Both arrangement methods improve the vibration reduction system's adaptability to complex outdoor environments, ensuring stable vibration reduction even under extreme conditions.

[0103] The vertical arrangement (the spacing can be adjusted according to the conductor specifications) can avoid the vibration damping devices from overlapping in the horizontal direction, preventing them from colliding or snagging with each other during operation (such as when they vibrate and sway with the conductor), thus reducing wear or damage to components; in particular, the staggered arrangement can further increase the horizontal distance between the devices, ensuring that each vibration damping device works independently and collaboratively, thus guaranteeing the stability and reliability of the entire vibration damping system.

[0104] The above embodiments are merely illustrative examples and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A vibration damping device for power transmission lines, characterized in that, include: A fixing part is provided on the power transmission line; A rotating part is sleeved on the outside of the fixed part and rotatably connected to the fixed part; A drive unit is rotatably disposed at the end of the fixed part away from the power transmission line; A limiting part is provided on the driving part; A telescopic rotating member is provided on the driving part. Under the action of wind, the telescopic rotating member disengages from the limiting part in the vertical direction and rotates downward, so that the telescopic rotating member abuts against the rotating part and drives the rotating part to rotate, thereby causing the rotating part to generate an upward force to balance the vibration force, until the telescopic rotating member disengages from the rotating part.

2. The transmission line vibration damping device according to claim 1, characterized in that, The fixing part includes: A fixed base is provided on the power transmission line; The fixing rod has one end connected to the fixing base; The rotating part is sleeved on the fixed rod and is movably connected to the fixed base so as to be able to rotate around the fixed rod.

3. The transmission line vibration damping device according to claim 2, characterized in that, The fixed base has a block-shaped structure.

4. The vibration damping device for power transmission lines according to claim 3, characterized in that, The fixed base is disc-shaped.

5. The vibration damping device for power transmission lines according to claim 2, characterized in that, The rotating part is magnetically connected to the fixed base.

6. The vibration damping device for power transmission lines according to claim 5, characterized in that, The rotating part is made of lightweight metal.

7. The vibration damping device for power transmission lines according to claim 6, characterized in that, The rotating part is made of aluminum alloy.

8. The vibration damping device for power transmission lines according to claim 2, characterized in that, The rotating part includes: Active base; The sleeve is connected at one end to the movable base; Two crossbars are symmetrically arranged at the end of the sleeve away from the movable base; The sleeve and the movable base are provided with a through hole, so that the movable base and the sleeve are sleeved on the fixed rod.

9. The transmission line vibration damping device according to claim 8, characterized in that, The movable base is integrally formed with the sleeve.

10. The transmission line vibration damping device according to claim 8, characterized in that, The sleeve is a cylinder, and the movable base is a disc-shaped structure. The diameter of the sleeve is smaller than the diameter of the movable base.

11. The transmission line vibration damping device according to any one of claims 2 to 10, characterized in that, The drive unit includes a wind-powered bird deterrent device, which is rotatably mounted on the top of the fixed rod. The wind-powered bird deterrent device includes: A rotating drum is rotatably mounted on the top of the fixed rod; The bird deterrent stick has one end connected to the rotating cylinder, and the other end of the bird deterrent stick extends away from the rotation.

12. The transmission line vibration damping device according to claim 11, characterized in that, The limiting part is provided with a receiving space, which extends along the axial direction of the bird deterrent rod, and the telescopic rotating member is located within the receiving space.

13. The transmission line vibration damping device according to claim 12, characterized in that, The telescopic rotating component includes: A fixed structure is connected to the fixed rod; An elastic element is connected to the fixed structure at one end, which is elastically expandable and contractible. A gravity block is connected to the other end of the elastic element; The drive rod is rotatably connected to the gravity block so that it can hang down.

14. The transmission line vibration damping device according to claim 13, characterized in that, The gravity block is spherical or cylindrical in shape.

15. The transmission line vibration damping device according to claim 11, characterized in that, The wind-powered bird deterrent device also includes: An upper limit block is located above the rotating drum; The lower limit block is located below the rotating drum.

16. A method for vibration reduction of power transmission lines, characterized in that, include: The limiting part of the transmission line vibration damping device as described in any one of claims 1 to 15 is provided at the length of the telescopic rotating member that sags due to wind force and the weight of the telescopic rotating member. The vibration damping device of the transmission line is installed on the transmission line, and the vibration damping device of the transmission line is arranged alternately on the transmission line or aligned vertically on the transmission line. When the transmission line generates a downward vertical vibration force under the action of wind, the telescopic rotating member is disengaged from the limit part in the plumb direction under the action of wind and rotates downward, so that the telescopic rotating member abuts against the rotating part and drives the rotating part to rotate, thereby causing the rotating part to generate an upward force to balance the vibration force, until the telescopic rotating member returns to its original position and disengages from the rotating part.

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