Overhead power line anti-vibration device
By designing an movable connection installation mechanism and moving components on the cable conductor, the adaptive adjustment of the vibration damper position is achieved, solving the problem of fixed installation position of the vibration damper, improving the vibration damping effect, and reducing the vibration risk of cable conductors in wind farms.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- THREE GORGES NEW ENERGY POWER GENERATION (FUNAN) CO LTD
- Filing Date
- 2025-08-18
- Publication Date
- 2026-07-21
AI Technical Summary
Existing vibration dampers are installed in fixed positions on the cable conductors, which makes it difficult to adapt to complex and ever-changing wind field conditions, resulting in poor vibration damping effect, especially increasing the risk of strand breakage due to vibration in wind farms.
An anti-vibration device for overhead power lines was designed. It is movably connected to the cable conductor through an installation mechanism. The position of the anti-vibration component is adaptively adjusted by using a moving component and a clamp component. The device includes a connecting box, a moving component, and a clamp component. The movement and fixation of the anti-vibration component are achieved by using support wheels and a driver.
It enables adaptive adjustment of the position of the vibration damper on the cable conductor, ensuring the normal operation of the cable conductor, reducing the vibration amplitude, and improving the vibration damping effect.
Smart Images
Figure CN224537753U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of vibration dampers, and in particular to a vibration damping device for overhead power lines. Background Technology
[0002] In overhead transmission lines, cable conductors are prone to vibration and galloping due to irregular wind impacts. Over time, this can cause permanent deformation at suspension points and even fatigue fracture. Therefore, installing vibration dampers on the conductors dissipates the vibrational energy, thus mitigating vibration. However, vibration dampers installed at different locations have varying damping effects, and the dampers themselves may slip and deviate from their original positions due to wind forces, affecting their vibration damping performance. In practical engineering applications, due to the complex and variable wind conditions, the actual effect of vibration dampers is often not as ideal as theoretical calculations suggest. This is especially true in overhead collector lines in wind farms, where the complex and variable wind farm environment results in different locations and frequencies of maximum conductor amplitude under different wind conditions. This significantly increases the risk of strand breakage due to vibration in these lines compared to ordinary overhead lines.
[0003] In existing technologies, vibration dampers are usually fixed in one position and cannot be moved when installed on cable conductors. However, in actual engineering applications, this installation method is often difficult to meet the complex and ever-changing wind field conditions, resulting in a large difference between the actual installation position and the ideal position, which affects the vibration damping effect of the cable conductors. Utility Model Content
[0004] The purpose of this utility model is to solve the shortcomings of the existing technology where the anti-vibration hammer cannot be adjusted on the cable conductor, and to propose an anti-vibration device for overhead power lines.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: An anti-vibration device for an overhead power line includes an installation mechanism, which is disposed on a cable conductor and is movably connected to the cable conductor. A vibration damping component is disposed at the bottom end of the mounting mechanism and is fixedly connected to the mounting mechanism; The installation mechanism includes: A connecting box is movably mounted on a cable conductor. The connecting box includes a housing and two cover plates fixedly connected to the housing. A partition is also provided inside the connecting box to separate the internal space of the connecting box into an upper compartment and a lower compartment. A movable component is fixedly installed inside the connection box and is adapted to the cable conductor. The movable component is used to drive the connection box to move, thereby driving the vibration damping component to move. A wire clamp assembly is fixedly disposed inside the connection box and located on one side of the movable component. The wire clamp assembly is adapted to the cable conductor and is used to fix the connection box on the cable conductor.
[0006] Furthermore, the moving component includes: The first support wheel is located in the lower compartment and is fixedly installed at the bottom of the partition. The first support wheel is adapted to the cable conductor and is also provided with a first driver. The second support wheel is fixedly disposed at the bottom end of the partition plate and located on one side of the first support wheel; The third support wheel is fixedly installed on the inner wall of the outer shell of the connecting box, and is arranged in the opposite direction to the cable conductor as the axis; The first support wheel, the second support wheel, and the third support wheel are all pulley bracket structures composed of rollers and brackets; In the first support wheel, the second support wheel and the third support wheel, the rotating surface of each roller is provided with a guide groove.
[0007] Furthermore, the moving component also includes: A controller is located in the upper compartment of the connecting box and is fixedly mounted on the top of the partition. A drive processor is fixedly disposed at the upper end of the partition and located on one side of the controller. The drive processor is electrically connected to the first driver and the controller. A displacement sensor is fixedly mounted on the bracket of the second support wheel, and the displacement sensor is electrically connected to the controller. A vibration sensor is mounted on the bracket of the second support wheel, on one side of the displacement sensor, and the vibration sensor is electrically connected to the controller.
[0008] Furthermore, the wire clamp assembly includes: A fixing frame is disposed at the bottom end of the partition and located in the lower compartment of the connecting box. The fixing frame includes two longitudinal beams and one transverse beam. A movable frame, which is slidably mounted on the fixed frame, includes two connecting beams and one abutting beam. The connecting box is fixed to the cable conductor by the abutting beam and the crossbeam abutting against each other.
[0009] Furthermore, the clamp assembly also includes two second drivers, which are fixedly disposed at the bottom end of the partition and are symmetrically arranged with the cable conductor as the axis. Gears are fixedly mounted on the output shafts of the two second drivers, and two racks adapted to the gears are mounted on the movable frame, with the gears meshing with the racks.
[0010] Furthermore, the vibration damping component includes: A connector, one end of which is fixedly connected to the bottom end of the connecting box, and a buckle is provided at the end of the connector away from the connecting box; An anti-swing hammer is fixedly installed inside the buckle, and the anti-swing hammer has a dumbbell-shaped structure.
[0011] The beneficial effects of this utility model are as follows: This application installs the entire device on the cable conductor by setting up a connection box, thereby placing the vibration damping component on the cable conductor. The moving component inside the connection box drives the vibration damping component to move on the cable conductor, adjusting the installation position of the vibration damping component. Under the action of the line clamp component, the installation position of the vibration damping component is fixed. This solves the technical problem that the vibration damper cannot be adjusted on the cable conductor, and realizes the technical effect of adaptive adjustment of the installation position of the vibration damper on the cable conductor, ensuring the normal operation of the line. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure of an anti-vibration device for an overhead power line provided in an embodiment of this utility model; Figure 2 This is a partial cross-sectional view of a vibration damping device for overhead power lines provided in an embodiment of this utility model. Figure 1 ; Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 This is a partial cross-sectional view of a vibration damping device for overhead power lines provided in an embodiment of this utility model. Figure 2 .
[0013] The markings in the diagram are as follows: 1. Mounting mechanism; 11. Connecting box; 12. Moving assembly; 121. First support wheel; 1211. First driver; 122. Second support wheel; 123. Third support wheel; 124. Controller; 125. Drive processor; 126. Displacement sensor; 127. Vibration sensor; 13. Cable clamp assembly; 131. Fixed frame; 132. Movable frame; 1321. Rack; 133. Second driver; 1331. Gear; 2. Vibration damping components; 21. Connectors; 22. Anti-swing mechanism; 3. Cable conductors. Detailed Implementation
[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0015] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.
[0016] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0017] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0018] Reference Figures 1 to 4As shown, an overhead power line vibration damping device, in practical applications, is used to be installed on overhead cables to reduce the vibration amplitude of the cable conductor 3. It includes an installation mechanism 1 and a vibration damping component 2 connected to the installation mechanism 1. The installation mechanism 1 is disposed on and movably connected to the cable conductor 3, meaning the installation mechanism 1 can move on the cable conductor 3, allowing the entire device to be installed on the cable conductor 3. The vibration damping component 2 is disposed at the bottom end of the installation mechanism 1 and fixedly connected to it. The vibration damping component 2 is used to reduce the vibration amplitude of the cable conductor 3. The installation mechanism 1 moves on the cable conductor 3, causing the vibration damping component 2 to move to a predetermined installation position, thereby reducing the vibration amplitude of the cable conductor 3.
[0019] In this embodiment, the installation mechanism 1 includes a connecting box 11, a movable component 12 disposed within the connecting box 11, and a wire clamp component 13.
[0020] Specifically, the connecting box 11 is movably mounted on the cable conductor 3. The connecting box 11 includes a housing and two cover plates connected to the housing. The housing is a frame-like structure formed by four long plates enclosing two open ends. Two through holes are provided at both ends of the housing. The cable conductor 3 is inserted into the housing through one through hole and exits through the other through hole, thus movably mounting the connecting box 11 on the cable conductor 3. The cover plates are plate-like structures adapted to the open ends of the housing. The two cover plates are fixed to the housing using detachable connections such as bolts and nuts, forming a hollow box-like structure, which is the connecting box 11. A partition is also provided inside the connecting box 11. The partition is fixedly connected to the housing and is parallel to the cable conductor 3, dividing the internal space of the connecting box 11 into an upper compartment and a lower compartment.
[0021] The movable component 12 is fixedly disposed within the connecting box 11 and adapted to the cable conductor 3. The movable component 12 is used to move the connecting box 11; that is, the movable component 12 is disposed in the lower compartment of the connecting box 11 and moves along the cable conductor 3 through contact with it, thereby moving the connecting box 11 along the cable conductor 3. Specifically, the movable component 12 includes a first support wheel 121, a second support wheel 122, and a third support wheel 123. In this embodiment, the first support wheel 121, the second support wheel 122, and the third support wheel 123 are all wheeled support structures composed of rollers and brackets. The first support wheel 121 is located in the lower compartment and is fixedly disposed at the bottom end of the partition. The first support wheel 121 is adapted to the cable conductor 3, that is, the rotating surface of the first support wheel 121 is in contact with the cable conductor 3. By rotating the first support wheel 121, the first support wheel 121 moves along the cable conductor 3, thereby moving the connecting box 11. The first support wheel 121 is provided with a first driver 1211 on one side for driving the roller in the first support wheel 121 to rotate. The first driver 1211 is fixedly mounted on the bracket in the first support wheel 121. For example, the first driver 1211 is a DC motor, which includes components such as a housing, stator, rotor, commutator and connecting shaft. The center of the roller in the first support wheel 121 is fixedly connected to the connecting shaft of the first driver 121. By driving the rotor to rotate, the first support wheel 121 is driven to rotate. The second support wheel 122 is fixedly disposed at the bottom end of the partition and located on one side of the first support wheel 121. The third support wheel 123 is fixedly disposed on the inner wall of the outer shell of the connecting box 11 and is arranged in the opposite direction to the third support wheel 123 with the cable conductor 3 as the axis. That is, the first support wheel 121 and the second support wheel 122 are in contact with the upper part of the cable conductor 3, and the third support wheel 123 is in contact with the lower part of the cable conductor 3. On the one hand, the first support wheel 121 and the second support wheel 122 located at the upper part of the cable conductor 3 share the force on the cable conductor 3, thereby improving stability and making the installation of the device on the cable conductor 3 more stable. On the other hand, the first support wheel 121, the second support wheel 122 and the third support wheel 123 located at the lower part of the cable conductor 3 form a tripod support structure to clamp the cable conductor 3 and keep it balanced and stable when moving.
[0022] The rotating surfaces of the first support wheel 121, the second support wheel 122, and the third support wheel 123 are all concave inward to form arc-shaped grooves that are adapted to the conductor cable. These arc-shaped grooves serve as guide grooves, allowing the first support wheel 121, the second support wheel 122, and the third support wheel 123 to have their movement paths controlled by the guide grooves. In other words, when the first support wheel 121, the second support wheel 122, and the third support wheel 123 rotate on the cable conductor 3, they can be aligned with its axis to avoid axial offset problems.
[0023] In this embodiment, to facilitate the control of the movement of the first support wheel 121, the moving component 12 further includes a controller 124 and a drive processor 125 electrically connected to the controller 124. The controller 124 is located in the upper compartment of the connecting box 11 and is fixedly mounted on the top of the partition. The drive processor 125 is fixedly mounted on the upper end of the partition and located on one side of the controller 124. The drive processor 125 is electrically connected to the first driver 1211 and the controller 124. The drive controller 124 is used to receive signal commands from the controller 124 to control the start and stop of the first driver 1211. For example, the drive processor 125 includes a power circuit, a signal conversion module, a signal sensing module, etc. It processes the control signals sent by the controller 124 and sends them to the first driver 1211 to control the precise start and stop of the first driver 1211, thereby controlling the rotation or stop of the first support wheel 121 through the controller 124.
[0024] In some preferred embodiments, during actual use, the connecting box 11 may deviate from its predetermined position due to wind speed. To ensure that the connecting box 11 returns to its original position after deviating from its original installation position, a displacement sensor 126 is also provided on the second support wheel 122. The displacement sensor 126 is fixedly mounted on the bracket of the second support wheel 122 and is electrically connected to the controller 124. For example, the displacement sensor 126 is an coded displacement sensor, which consists of an coded scale, a reading head, and a signal processing circuit. The displacement sensor 126 records the offset distance from the original position and transmits this signal to the controller 124. The controller 124 then controls the first support wheel 121 to move, thereby resetting the connecting box 11 and moving the anti-vibration component 2 to its original installation position.
[0025] In some preferred embodiments, due to the change in the vibration frequency of the cable conductor 3, the vibration damping component 2 needs to be adjusted in its installation position according to the change in vibration frequency. To adjust the position of the vibration damping component 2, the moving component 12 further includes a vibration sensor 127. The vibration sensor 127 is disposed on the bracket of the second support wheel 122 on the side of the displacement sensor 126, and the vibration sensor 127 is electrically connected to the controller 124 so that the vibration frequency of the cable conductor 3 can be transmitted as a signal through the direct contact between the second support wheel 122 and the cable conductor 3. For example, the vibration sensor 127 is a magnetoelectric vibration sensor 127, which is composed of a magnet, a coil, a spring, etc. The magnetoelectric vibration sensor 127 is based on the principle of electromagnetic induction. When vibration causes a change in the magnetic flux in the magnetic circuit, it generates an induced electromotive force and converts it into an electrical signal, which is transmitted to the controller 124. The controller 124 then controls the movement of the first support wheel 121, thereby moving the vibration damping component 2 to an appropriate position.
[0026] In this embodiment, the wire clamp assembly 13 is fixedly disposed inside the connecting box 11 and located on one side of the moving assembly 12. The wire clamp assembly 13 is adapted to the cable conductor 3 and is used to fix the connecting box 11 on the cable conductor 3 to prevent it from moving.
[0027] The wire clamp assembly 13 includes a fixed frame 131 and a movable frame 132 connected to the fixed frame 131. The fixed frame 131 is fixedly disposed at the bottom end of the partition and located in the lower compartment of the connecting box 11. The fixed frame 131 includes two longitudinal beams and one transverse beam. One end of each of the two longitudinal beams is fixedly connected to the partition, and each of the two longitudinal beams is provided with a sliding groove. The transverse beam is fixedly connected to the end of each of the two longitudinal beams away from the partition, and the transverse beam is located below the cable conductor 3. The movable frame 132 is mounted on the fixed frame 131 and is movably connected to the fixed frame 131. The movable frame 132 has a structure adapted to the fixed frame 131, that is, the movable frame 132 includes two connecting beams and one abutting beam. The two connecting beams are respectively mounted on the two longitudinal beams and are slidably connected to the longitudinal beams through sliding grooves on the two longitudinal beams. The partition plate is also provided with through holes adapted to the two connecting beams, so that the two connecting beams have sufficient clearance when sliding on the fixed frame 131. With sufficient space, the abutment beam is fixedly connected to the end of the two connecting beams away from the partition. The movement of the two connecting beams drives the abutment beam to move, and the abutment beam is located above the cable conductor 3, so that the cable conductor 3 located in the connecting box 11 is between the crossbeam and the abutment beam. If the connecting box 11 needs to be fixed on the cable conductor 3, the abutment beam moves towards the crossbeam, so that the abutment beam and the crossbeam abut against the cable conductor 3. Under the action of friction, the moving mechanism stops moving, thereby fixing the connecting box 11 on the cable conductor 3.
[0028] In this embodiment, to facilitate the movement of the two connecting beams, the clamp assembly 13 further includes two second drivers 133. The two second drivers 133 are fixedly disposed at the bottom end of the partition, and the two second drivers 133 are symmetrically arranged with the cable conductor 3 as the axis to maintain the balance of the connecting box 11 on the cable conductor 3. The structure of the second drivers 133 is the same as that of the first driver 1211. Gears 1331 are fixedly disposed on the output shafts of the two second drivers 133. The movable frame 132 is provided with two racks 1321 that are adapted to the gears 1331, and the gears 1331 and the racks 1321 are meshed and connected. That is, racks 1321 are disposed on the connecting beams of the movable frame 132. By activating the second drivers 133, the gears 1331 are driven to rotate, thereby causing the connecting beam to move along the longitudinal beam direction under the action of the racks 1321, thereby causing the abutment beam to abut against the cable conductor 3 to fix the connecting box 11 or release it away from the cable conductor 3.
[0029] In this embodiment, the vibration damping component 2 is fixedly disposed at the bottom end of the connecting box 11, and includes a connector 21 and an anti-swing hammer 22 fixedly connected to the connector 21. One end of the connector 21 is fixedly connected to the bottom end of the connecting box 11, and a buckle is provided at the end of the connector 21 away from the connecting box 11. The anti-swing hammer 22 is fixedly disposed in the buckle. The connector 21 may be, but is not limited to, a plate-like structure, or a rod-like structure with a length of 0.3 to 0.6 meters, to prevent the anti-swing hammer 22 from contacting the cable conductor 3 due to swinging, thus preventing short circuits and other risks. The anti-swing hammer 22 is dumbbell-shaped, that is, the two ends of the anti-swing hammer 22 are hammerheads, and the two hammerheads are connected by a connecting rod. The center of the connecting rod is fixedly connected to the buckle, so that the anti-swing hammer 22 is symmetrically arranged about the buckle as the axis, increasing the balance of the anti-swing hammer 22 on the cable conductor 3.
[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A vibration damping device for overhead power lines, characterized in that, include: The installation mechanism (1) is disposed on the cable conductor (3) and is movably connected to the cable conductor (3); Vibration damping component (2), wherein the vibration damping component (2) is disposed at the bottom end of the mounting mechanism (1) and is fixedly connected to the mounting mechanism (1); The installation mechanism (1) includes: The connecting box (11) is movably mounted on the cable conductor (3). The connecting box (11) includes a shell and two cover plates fixedly connected to the shell. The connecting box (11) is also provided with a partition, which separates the internal space of the connecting box (11) into an upper compartment and a lower compartment. The movable component (12) is fixedly installed inside the connecting box (11) and is adapted to the cable conductor (3). The movable component (12) is used to drive the connecting box (11) to move, thereby driving the vibration damping component (2) to move. The wire clamp assembly (13) is fixedly disposed inside the connecting box (11) and located on one side of the moving assembly (12). The wire clamp assembly (13) is adapted to the cable conductor (3) and is used to fix the connecting box (11) on the cable conductor (3).
2. The vibration damping device for overhead power lines according to claim 1, characterized in that, The moving component (12) includes: The first support wheel (121) is located in the lower compartment and is fixedly installed at the bottom of the partition. The first support wheel (121) is adapted to the cable wire (3). The first support wheel (121) is also provided with a first driver (1211). The second support wheel (122) is fixedly disposed at the bottom end of the partition and located on one side of the first support wheel (121); The third support wheel (123) is fixedly installed on the inner wall of the outer shell of the connecting box (11) and is arranged in the opposite direction to the third support wheel (123) with the cable conductor (3) as the axis; The first support wheel (121), the second support wheel (122), and the third support wheel (123) are all pulley bracket structures composed of rollers and brackets; In the first support wheel (121), the second support wheel (122) and the third support wheel (123), the rotating surface of each roller is provided with a guide groove.
3. The vibration damping device for overhead power lines according to claim 2, characterized in that, The moving component (12) also includes: The controller (124) is located in the upper compartment of the connecting box (11) and is fixedly mounted on the top of the partition. A drive processor (125) is fixedly disposed on the upper end of the partition and located on one side of the controller (124). The drive processor (125) is electrically connected to the first driver (1211) and the controller (124). A displacement sensor (126) is fixedly mounted on the bracket of the second support wheel (122), and the displacement sensor (126) is electrically connected to the controller (124). A vibration sensor (127) is mounted on the bracket of the second support wheel (122) on one side of the displacement sensor (126), and the vibration sensor (127) is electrically connected to the controller (124).
4. The vibration damping device for overhead power lines according to claim 1, characterized in that, The wire clamp assembly (13) includes: A fixing frame (131) is provided at the bottom end of the partition and located in the lower compartment of the connecting box (11). The fixing frame (131) includes two longitudinal beams and one transverse beam. A movable frame (132) is slidably mounted on the fixed frame (131). The movable frame (132) includes two connecting beams and one abutting beam. The connecting box (11) is fixed to the cable conductor (3) by the abutting beam and the crossbeam abutting against the cable guide.
5. The vibration damping device for overhead power lines according to claim 4, characterized in that, The clamp assembly (13) also includes two second drivers (133), which are fixedly disposed at the bottom end of the partition and are symmetrically arranged with the cable conductor (3) as the axis. Gears (1331) are fixedly mounted on the output shafts of the two second drivers (133), and two racks (1321) adapted to the gears (1331) are mounted on the movable frame (132), and the gears (1331) are meshed with the racks (1321).
6. The vibration damping device for overhead power lines according to claim 1, characterized in that, The vibration damping component (2) includes: A connector (21) is fixedly connected at one end to the bottom end of the connecting box (11), and a buckle is provided at the end of the connector (21) away from the connecting box (11). Anti-swing hammer (22), which is fixedly installed in the buckle, and the anti-swing hammer (22) is a dumbbell-shaped structure.