CN111600264A - Damper with adjustable position angle of power transmission line and adjusting method - Google Patents
Damper with adjustable position angle of power transmission line and adjusting method Download PDFInfo
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- CN111600264A CN111600264A CN202010475184.2A CN202010475184A CN111600264A CN 111600264 A CN111600264 A CN 111600264A CN 202010475184 A CN202010475184 A CN 202010475184A CN 111600264 A CN111600264 A CN 111600264A
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- damper
- motor
- position adjusting
- transmission line
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/14—Arrangements or devices for damping mechanical oscillations of lines, e.g. for reducing production of sound
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/02—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables
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Abstract
The invention discloses an anti-vibration hammer with an adjustable position angle of a power transmission line and an adjusting method, belonging to the technical field of anti-vibration hammers. The damper with the adjustable position angle of the power transmission line and the adjusting method reduce better damping, improve the damping effect, can consume vibration energy generated due to too large wind speed to a great extent, effectively protect the power transmission line, prolong the service life of the power transmission line, realize automatic adjustment of different angles of the damper according to different wind directions and different wind speeds, reduce the damage to the electric wire to the greatest extent, and increase the convenience and the safety of use.
Description
Technical Field
The invention relates to the technical field of damper, in particular to a damper with an adjustable position angle of a power transmission line and an adjusting method.
Background
The damper is used for reducing the vibration of the wire caused by wind force. The high-voltage overhead line has high pole position and large span, and can vibrate when the wire is acted by wind. The working conditions at the wire suspension are most unfavourable when the wire vibrates. Because vibration many times, the wire can take place fatigue failure because of periodic buckling, and most formula structures as an organic whole of current damper, and the hammer block is fixed on whole device, and the adjustment is carried out to no way, can not adjust according to wind direction or wind speed size, and when wind speed was big, the damper can't eliminate with the vibration of wind, and the effect of damping is poor.
Disclosure of Invention
The invention aims to provide the damper with the adjustable position angle of the transmission line and the adjusting method thereof, wherein the damper is perpendicular to the wind direction, the contact surface with the wind is increased, the energy consumption of the damper reduces the strength of breeze vibration, better damping is reduced, and the damping effect is improved.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a transmission line position angularly adjustable damper, includes the electric wire body, cup joint the fixing base on the electric wire body, the fixing base includes seat of honour and lower seat, is fixed by the screw between seat of honour and the lower seat, and the electric wire body passes the fixing base and is fixed by seat of honour and lower seat cramp, seat of honour top installation detection device, lower seat bottom connection level adjusting device, level adjusting device bottom set up the connecting rod, and the connecting rod both ends set up the damper, and the damper side sets up the device of adjusting from top to bottom, and device of adjusting from top to bottom and level adjusting device and detection device wireless connection.
Further, horizontal positioning device is including turning to motor, dwang and the fixed lantern ring, turns to the output shaft dwang of motor, and the fixed lantern ring is installed to the dwang bottom, sets up the slotted hole in the fixed lantern ring, and the connecting rod runs through the slotted hole and connects the damper.
Further, set up the mounting groove in the lower seat, turn to the motor and fix in the mounting groove, the output that turns to the motor pierces through the mounting groove and is connected with the dwang, and turns to and sets up steering controller in the motor.
Further, the up-down position adjusting device comprises a position adjusting seat, a position adjusting motor, an internal groove, a rotating shaft, a movable rod and a movable groove, wherein the internal groove is formed in the position adjusting seat, the movable groove is formed in the side of the internal groove, the rotating shaft is arranged in the internal groove, the position adjusting motor is fixed at the side end of the position adjusting seat, the position adjusting motor is provided with a position adjusting controller, an output shaft rod of the position adjusting motor penetrates through the position adjusting seat and is fixed in the internal groove, the rotating shaft is sleeved on the output shaft rod of the position adjusting motor, and the movable rod is fixedly connected to the rotating shaft.
Furthermore, the upper and lower position adjusting devices and the damper are arranged in two groups, two ends of the connecting rod are respectively installed on the position adjusting seat, and the tail end of the damper is connected with one end of the movable rod.
Furthermore, the damper is composed of a U-shaped rod and two circular hammer bodies, and the two circular hammer bodies are respectively arranged at two ends of the U-shaped rod.
Furthermore, the detection device comprises an air speed sensor, a signal processor, a shell and a battery, wherein the air speed sensor is arranged on the shell, the signal processor and the battery are arranged in the shell, and the signal processor, the air speed sensor and the battery are electrically connected.
Furthermore, the wind speed sensor is respectively in wireless connection with a steering controller on the steering motor and a position adjusting controller on the position adjusting motor through a signal processor.
The invention provides another technical scheme: a method for adjusting a damper with an adjustable position angle of a power transmission line comprises the following steps:
the method comprises the following steps: the wire body is clamped and fixed inside by the upper seat and the lower seat and is fixed by screws, and the anti-vibration hammer is horizontally fixed below the wire body, so that the shaking of the wire body is reduced;
step two: the wind speed sensor detects wind speed and wind direction, transmits the wind speed and wind direction to the steering controller and the adjusting controller through the signal processor, and adjusts the position of the damper through the steering controller and the adjusting controller;
step three: when the wind speed sensor detects that the wind direction is the same as the direction of the damper, the steering controller controls the steering motor to rotate to drive the whole damper to rotate, so that the damper and the wind direction form a vertical angle, the contact surface with the wind is increased, and the shock absorption is better carried out;
step four: when the wind speed sensor detects the wind speed, the position adjusting motor is controlled to rotate through the position adjusting controller, and the position adjusting motor drives the damper to rotate, so that the angle of the damper is adjusted.
Furthermore, aiming at the wind speed sensor in the step two, the wind speed sensor can detect the wind speed and the wind direction, and the detected signals are converted into instructions through the signal processor, so that the positioning motor and the steering motor are controlled.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention provides an anti-vibration hammer with adjustable position angle of a power transmission line and an adjusting method, wherein an output end of a steering motor penetrates through a mounting groove to be connected with a rotating rod, a steering controller is arranged in the steering motor, when a wind speed sensor detects that the wind direction and the anti-vibration hammer are in the same direction, the steering controller controls the steering motor to rotate to drive the whole anti-vibration hammer to rotate, the anti-vibration hammer moves up and down, the steel strand generates internal friction to consume most of vibration energy of an overhead line by using the inertia of the hammer, the damping of the hammer by air consumes a part of energy, the wire clamp of the anti-vibration hammer consumes and reflects a part of energy to enable the anti-vibration hammer to be in a vertical angle with the wind direction, the contact surface with wind is increased, the energy consumption of the anti-vibration hammer reduces the strength of breeze vibration, better.
2. According to the damper with the adjustable position angle of the power transmission line and the adjusting method, the wind speed sensor detects the wind speed, the position adjusting motor is controlled to rotate through the position adjusting controller, the position adjusting motor drives the damper to rotate, so that the angle of the damper is adjusted, when the wind speed is high, the left position adjusting motor drives the rotating shaft to rotate, the rotating shaft drives the movable rod to rotate, so that the damper is driven to move upwards, the right position adjusting motor rotates reversely, the damper is driven to rotate downwards, the angle of the damper head is changed, so that when the wind speed is high, the vibration frequency of the damper is increased, the vibration energy generated due to the high wind speed can be consumed to a great extent, the power transmission line is effectively protected, and the service life of the power transmission line is prolonged.
3. According to the damper with the adjustable position angle of the power transmission line and the adjusting method, the wind speed sensor can detect wind speed and wind direction, detected signals are converted into instructions through the signal processor, the positioning motor and the steering motor are controlled, the damper can be automatically adjusted at different angles according to different wind directions and different wind speeds, damage to the electric wire is reduced to the greatest extent, and convenience and safety in use are improved.
Drawings
FIG. 1 is an elevational view of the overall construction of the present invention;
FIG. 2 is a top view of the overall structure of the present invention;
FIG. 3 is a half sectional view of the overall structure of the present invention;
FIG. 4 is an enlarged view of the invention at A;
FIG. 5 is a top view of the horizontal positioning device of the present invention after turning;
FIG. 6 is a sectional view of the structure of the vertical positioning device of the present invention;
FIG. 7 is an enlarged view of the invention at B;
FIG. 8 is a side view of the overall structure of the positioning device of the present invention;
FIG. 9 is a block diagram of a control module of the detecting device of the present invention.
In the figure: 1. a wire body; 2. a fixed seat; 21. an upper seat; 22. a lower seat; 221. mounting grooves; 3. a detection device; 31. a wind speed sensor; 32. a signal processor; 33. a housing; 34. a battery; 4. a horizontal positioning device; 41. a steering motor; 411. a steering controller; 42. rotating the rod; 43. a fixed collar; 5. a connecting rod; 6. a damper; 61. a U-shaped rod; 62. a circular hammer body; 7. an up-down position adjusting device; 71. a position adjusting seat; 72. a positioning motor; 721. a controller for adjusting; 73. a built-in groove; 74. a rotating shaft; 75. a movable rod; 76. a movable groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, a damper with adjustable position angle of a power transmission line and an adjusting method thereof, includes a wire body 1, a fixed seat 2 is sleeved on the wire body 1, the fixed seat 2 includes an upper seat 21 and a lower seat 22, the upper seat 21 and the lower seat 22 are fixed by screws, the wire body 1 passes through the fixed seat 2 and is clamped and fixed by the upper seat 21 and the lower seat 22, a detection device 3 is installed above the upper seat 21, the bottom end of the lower seat 22 is connected with a horizontal positioning device 4, the bottom end of the horizontal positioning device 4 is provided with a connecting rod 5, two ends of the connecting rod 5 are provided with the damper 6, the side end of the damper 6 is provided with an upper and lower positioning device 7, the upper and lower positioning devices 7 and the horizontal positioning device 4 are wirelessly connected with the detection device 3, the upper seat 21 and the lower seat 22 clamp and fix the wire body 1 inside, the damper 6 is fixed horizontally below the wire body 1 by screws, the wire body 1 is reduced from shaking.
Referring to fig. 3-5, the horizontal positioning device 4 includes a steering motor 41, a rotating rod 42 and a fixed collar 43, the output shaft of the steering motor 41 is connected to the rotating rod 42, the fixed collar 43 is installed at the bottom end of the rotating rod 42, a slot is formed in the fixed collar 43, the connecting rod 5 is connected to the damper 6 through the slot, the mounting groove 221 is formed in the lower seat 22, the steering motor 41 is fixed in the mounting groove 221, the output end of the steering motor 41 penetrates through the mounting groove 221 to be connected to the rotating rod 42, and a steering controller 411 is arranged in the steering motor 41, when the wind speed sensor 31 detects that the wind direction is the same as the direction of the damper 6, the steering controller 411 controls the steering motor 41 to rotate, so as to drive the entire damper 6 to rotate, the damper 6 to move up and down, and the steel strand generates most of vibration energy of the overhead line by using the inertia of the, the part of energy is consumed and reflected at the wire clamp of the damper 6, so that the damper 6 is perpendicular to the wind direction, the contact surface with the wind is increased, the energy consumption of the damper 6 reduces the strength of breeze vibration, better damping is reduced, and the damping effect is improved.
Referring to fig. 6-8, the up-down position adjusting device 7 includes a position adjusting base 71, a position adjusting motor 72, an inner slot 73, a rotating shaft 74, a movable rod 75 and a movable slot 76, the inner slot 73 is formed in the position adjusting base 71, the movable slot 76 is formed on the side of the inner slot 73, the rotating shaft 74 is arranged in the inner slot 73, the position adjusting motor 72 is fixed on the side end of the position adjusting base 71, the position adjusting motor 72 is provided with a position adjusting controller 721, the output shaft rod of the position adjusting motor 72 penetrates through the position adjusting base 71 and is fixed in the inner slot 73, the rotating shaft 74 is sleeved on the output shaft rod of the position adjusting motor 72, the movable rod 75 is fixedly connected on the rotating shaft 74, the up-down position adjusting device 7 and the vibration damper 6 are both provided in two sets, two ends of the connecting rod 5 are respectively installed on the position adjusting base 71, the tail end of the vibration damper 6 is connected with one end of the movable rod 75, the vibration damper 6 is composed of a U-shaped rod 61, the wind speed sensor 31 detects the wind speed, the position adjusting motor 72 is controlled to rotate through the position adjusting controller 721, the position adjusting motor 72 drives the damper 6 to rotate, so as to adjust the angle of the damper 6, when the wind speed is high, the left position adjusting motor 72 drives the rotating shaft 74 to rotate, the rotating shaft 74 drives the movable rod 75 to rotate, so as to drive the damper 6 to move upwards, the right position adjusting motor 72 reversely rotates, so as to drive the damper 6 to rotate downwards, through changing the angle of the hammer head of the damper 6, so that when the wind speed is high, the vibration frequency of the damper 6 is increased at the same time, the vibration energy generated due to too high wind speed can be consumed to a great extent, the power transmission line is effectively protected, and the service life of the power transmission line is prolonged.
Referring to fig. 9, the detecting device 3 includes a wind speed sensor 31, a signal processor 32, a housing 33 and a battery 34, the wind speed sensor 31 is disposed on the housing 33, the signal processor 32 and the battery 34 are disposed in the housing 33, the signal processor 32, the wind speed sensor 31 and the battery 34 are electrically connected, the wind speed sensor 31 is wirelessly connected with a steering controller 411 on the steering motor 41 and a position-adjusting controller 721 on the position-adjusting motor 72 through the signal processor 32, the wind speed sensor 31 can detect wind speed and wind direction, the signal processor 32 converts the detected signals into commands, thereby control positioning motor 72 and turn to motor 41, realize can carrying out the automatic adjustment of different angles to damper 6 according to different wind directions and different wind speeds, reduce the damage to the electric wire to the at utmost, increase convenience and the security of using.
In order to better show the process of the damper with the adjustable angle of the position of the power transmission line, the embodiment provides an adjusting method of the damper with the adjustable angle of the position of the power transmission line, which includes the following steps:
the method comprises the following steps: the wire body 1 is clamped and fixed inside by the upper seat 21 and the lower seat 22 and is fixed by screws, and the damper 6 is horizontally fixed below the wire body 1, so that the shaking of the wire body 1 is reduced;
step two: the wind speed sensor 31 can detect wind speed and wind direction, the signal processor 32 converts the detected signals into instructions to control the positioning motor 72 and the steering motor 41, the instructions are transmitted to the steering controller 411 and the positioning controller 721 through the signal processor 32, and the positions of the vibration dampers 6 are adjusted through the steering controller 411 and the positioning controller 721;
step three: when the wind speed sensor 31 detects that the wind direction is the same as the direction of the damper 6, the steering controller 411 controls the steering motor 41 to rotate, so that the whole damper 6 is driven to rotate, the damper 6 forms a vertical angle with the wind direction, the contact surface with the wind is increased, and the shock absorption is better carried out;
step four: when the wind speed sensor 31 detects the wind speed, the position adjusting motor 72 is controlled to rotate by the position adjusting controller 721, and the position adjusting motor 72 drives the damper 6 to rotate, so as to adjust the angle of the damper 6.
In summary, in the damper with adjustable position angle of the power transmission line and the adjusting method thereof provided by the present invention, the output end of the steering motor 41 penetrates through the installation groove 221 to be connected with the rotating rod 42, and the steering controller 411 is arranged in the steering motor 41, when the wind speed sensor 31 detects that the wind direction is the same as the direction of the damper 6, the steering controller 411 controls the steering motor 41 to rotate, so as to drive the entire damper 6 to rotate, the damper 6 moves up and down, the inertia of the weight is utilized, so that the steel strand generates the internal friction to consume most of the vibration energy of the overhead line, the damping of the air to the weight consumes a part of the energy, the clamp of the damper 6 consumes and reflects a part of the energy, so that the damper 6 forms a vertical angle with the wind direction, the contact surface with the wind is increased, the energy consumption of the damper 6 reduces the intensity of the breeze vibration, reduces the better damping, improves the damping effect, the wind, the positioning motor 72 is controlled to rotate by the positioning controller 721, the positioning motor 72 drives the damper 6 to rotate, so as to adjust the angle of the damper 6, when the wind speed is high, the left positioning motor 72 drives the rotating shaft 74 to rotate, the rotating shaft 74 drives the movable rod 75 to rotate, so as to drive the damper 6 to move upwards, the right positioning motor 72 rotates reversely, so as to drive the damper 6 to rotate downwards, and when the wind speed is high, the vibration frequency of the damper 6 is increased at the same time by changing the angle of the hammer head of the damper 6, so that the vibration energy generated due to the high wind speed can be consumed to a great extent, the power transmission line is effectively protected, the service life of the power transmission line is prolonged, the wind speed sensor 31 can detect the wind speed and the wind direction, the detected signal is converted into an instruction by the signal processor 32, so as to control the positioning motor 72 and the steering motor 41, so as to realize the automatic adjustment of different angles of the damper 6 according to different wind directions and different wind speeds, the damage to the electric wire is reduced to the maximum extent, and the use convenience and safety are improved.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (10)
1. The utility model provides a transmission line position angularly adjustable damper which characterized in that: including electric wire body (1), cup joint fixing base (2) on electric wire body (1), fixing base (2) include seat of honour (21) and lower seat (22), go up seat of honour (21) and fix by the screw down between seat (22), and electric wire body (1) passes fixing base (2) and is fixed by seat of honour (21) and lower seat (22) cramp, seat of honour (21) top installation detection device (3), lower seat (22) bottom connection level adjusting device (4), level adjusting device (4) bottom set up connecting rod (5), and connecting rod (5) both ends set up damper (6), and damper (6) side sets up upper and lower adjusting device (7), upper and lower adjusting device (7) and level adjusting device (4) and detection device (3) wireless connection.
2. The damper with the adjustable transmission line position angle as claimed in claim 1, characterized in that: horizontal positioning device (4) including turning to motor (41), dwang (42) and fixed lantern ring (43), output shaft connection dwang (42) that turns to motor (41), dwang (42) bottom installation fixed lantern ring (43), set up the slotted hole in the fixed lantern ring (43), connecting rod (5) run through the slotted hole and connect damper (6).
3. The damper with the adjustable transmission line position angle as claimed in claim 1, characterized in that: set up mounting groove (221) in lower seat (22), turn to motor (41) and fix in mounting groove (221), the output that turns to motor (41) pierces through mounting groove (221) and is connected with dwang (42), and sets up steering control ware (411) in turning to motor (41).
4. The damper with the adjustable transmission line position angle as claimed in claim 1, characterized in that: the up-down position adjusting device (7) comprises a position adjusting seat (71), a position adjusting motor (72), a built-in groove (73), a rotating shaft (74), a movable rod (75) and a movable groove (76), wherein the built-in groove (73) is formed in the position adjusting seat (71), the movable groove (76) is formed in the side of the built-in groove (73), the rotating shaft (74) is arranged in the built-in groove (73), the position adjusting motor (72) is fixed at the side end of the position adjusting seat (71), the position adjusting controller (721) is arranged on the position adjusting motor (72), an output shaft rod of the position adjusting motor (72) penetrates through the position adjusting seat (71) and is fixed in the built-in groove (73), the rotating shaft (74) is sleeved on the output shaft rod of the position adjusting motor (72), and the movable rod (75) is fixedly connected.
5. The damper with the adjustable transmission line position angle as claimed in claim 1, characterized in that: the upper and lower position adjusting devices (7) and the damper (6) are respectively provided with two groups, two ends of the connecting rod (5) are respectively arranged on the position adjusting seat (71), and the tail end of the damper (6) is connected with one end of the movable rod (75).
6. The damper with the adjustable transmission line position angle as claimed in claim 1, characterized in that: the damper (6) is composed of a U-shaped rod (61) and two circular hammer bodies (62), and the two circular hammer bodies (62) are respectively arranged at two ends of the U-shaped rod (61).
7. The damper with the adjustable transmission line position angle as claimed in claim 1, characterized in that: the detection device (3) comprises a wind speed sensor (31), a signal processor (32), a shell (33) and a battery (34), the wind speed sensor (31) is arranged on the shell (33), the signal processor (32) and the battery (34) are arranged in the shell (33), and the signal processor (32), the wind speed sensor (31) and the battery (34) are electrically connected.
8. The damper with the adjustable transmission line position angle of claim 7, characterized in that: the wind speed sensor (31) is respectively in wireless connection with a steering controller (411) on the steering motor (41) and a position adjusting controller (721) on the position adjusting motor (72) through a signal processor (32).
9. The method for adjusting the damper with the adjustable angle of the position of the power transmission line according to claim 1, is characterized in that: the method comprises the following steps:
the method comprises the following steps: the wire body (1) is clamped and fixed inside by the upper seat (21) and the lower seat (22) and is fixed by screws, and the damper (6) is horizontally fixed below the wire body (1) to reduce the shaking of the wire body (1);
step two: the wind speed sensor (31) detects wind speed and wind direction, the wind speed and the wind direction are transmitted to the steering controller (411) and the adjusting controller (721) through the signal processor (32), and the position of the damper (6) is adjusted through the steering controller (411) and the adjusting controller (721);
step three: when the wind speed sensor (31) detects that the wind direction is the same as that of the damper (6), the steering controller (411) controls the steering motor (41) to rotate to drive the whole damper (6) to rotate, so that the damper (6) forms a vertical angle with the wind direction, a wind contact surface is increased, and the vibration is better absorbed;
step four: when the wind speed sensor (31) detects the wind speed, the position adjusting motor (72) is controlled to rotate by the position adjusting controller (721), and the position adjusting motor (72) drives the damper (6) to rotate, so that the angle of the damper (6) is adjusted.
10. The method for adjusting the damper with the adjustable angle of the position of the power transmission line according to claim 9, characterized in that: and aiming at the wind speed sensor (31) in the second step, the wind speed and the wind direction can be detected, and the detected signals are converted into instructions through the signal processor (32), so that the positioning motor (72) and the steering motor (41) are controlled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010475184.2A CN111600264B (en) | 2020-05-29 | 2020-05-29 | Damper with adjustable position angle of power transmission line and adjusting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010475184.2A CN111600264B (en) | 2020-05-29 | 2020-05-29 | Damper with adjustable position angle of power transmission line and adjusting method |
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| CN111600264A true CN111600264A (en) | 2020-08-28 |
| CN111600264B CN111600264B (en) | 2021-03-19 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113964768A (en) * | 2021-11-05 | 2022-01-21 | 安徽威龙电力器材有限公司 | Damper with multi-angle adjustable hammer head and adjusting method thereof |
| CN114825234A (en) * | 2022-05-31 | 2022-07-29 | 安徽省含山县兴建铸造厂 | Balance adjusting device and method for power line damper |
| CN117117760A (en) * | 2023-10-25 | 2023-11-24 | 国网山东省电力公司鱼台县供电公司 | Self-adjusting high-voltage line spacer |
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Denomination of invention: A vibration damper with adjustable position and angle for transmission lines and its adjustment method Effective date of registration: 20230525 Granted publication date: 20210319 Pledgee: Hanshan County sub branch of Postal Savings Bank of China Ltd. Pledgor: ANHUI WEI LONG POWER EQUIPMENT Co.,Ltd. Registration number: Y2023980041758 |