Line anti-vibration hammer capable of adjusting resonant frequencies

Abstract

The invention discloses a line anti-vibration hammer capable of adjusting resonant frequencies, relates to a line anti-vibration hammer, and aims at solving the problems that the existing antivibrator only can be matched with several resonant frequencies, and a resonance vibration attenuation effect cannot be exerted on other numerous frequencies. A line sheath of the line anti-vibration hammer disclosed by the invention covers a lead; a clip assembly is arranged on the line sheath; a middle support plate is connected with the lower end of the clip assembly through bolts; a bottom support plate is arranged at the lower end of the middle support plate; a stepping motor is arranged on the bottom support plate through a pressing plate; the output end of the stepping motor is connected with a screw; two ends of the screw are respectively supported by a first rotating part and a second rotating part and are rotatably connected; a worm wheel is arranged on the bottom support plate above the screw; the middle part of a rotating lever is rotatably arranged on the middle support plate; two ends of the rotating lever are respectively and rotatably connected with one end of a first connecting rod and one end of a second connecting rod; the other end of the first connecting rod and the other end of the second connecting rod are respectively and rotatably connected with a resonant device. The line anti-vibration hammer disclosed by the invention is used for resonant frequency adjustment of an overhead line.

Description

technical field

[0001] The invention relates to an anti-vibration hammer for overhead lines, in particular to a line anti-vibration hammer with adjustable resonant frequency. Background technique

[0002] Breeze vibrations of transmission lines and wind vibrations of transmission towers often cause extremely harmful faults such as broken strands and broken wires of transmission lines, node connection damage of poles and towers, and many times caused serious large-scale power outages. There are three forms of wind-induced conductor vibration of overhead transmission lines: breeze vibration, sub-gap vibration and galloping, among which the breeze vibration of conductors occurs most frequently and has the greatest impact. The breeze vibration of the wire is due to the periodic "Karman vortex" excitation behind the wire when the wind blows through the wire vertically, which generates a force on the wire perpendicular to the wire and the wind direction, causing the wire to genera...

Examples

specific Embodiment approach 1

[0012] Specific implementation mode one: combine figure 1 Describe this embodiment, a line anti-vibration hammer with adjustable resonance frequency in this embodiment includes a wire clamp assembly 1 and a wire grommet 4, the wire grommet 4 is set on the wire 5, and the wire clamp assembly 1 is installed on the wire grommet 4 Above, the line anti-vibration hammer also includes an intermediate supporting plate 2, two resonance devices 3, a first connecting rod 11, a lower supporting plate 12, a first rotating member 13, a screw 14, a second rotating member 15, a pressing plate 16, a step Enter motor 17, worm gear 19, second connecting rod 20 and rotating rod 21, middle supporting plate 2 is connected with the lower end of clamp assembly 1 by screw, lower supporting plate 12 is installed on the lower end of middle supporting plate 2, and stepper motor 17 passes through The pressure plate 16 is installed on the lower supporting plate 12, the output end of the stepping motor 17 i...

specific Embodiment approach 2

[0013] Specific implementation mode two: combination figure 1 To illustrate this embodiment, the line anti-vibration hammer of this embodiment also includes a first fixed head 10 and a second fixed head 18, and the other end of the first connecting rod 11 and the other end of the second connecting rod 20 pass through the first fixed head 10 respectively. And the second fixed head 18 is rotatably connected with a resonance device 3 . Such arrangement facilitates the smooth rotation of the resonance device 3 , and also facilitates the connection of the other end of the first connecting rod 11 and the other end of the second connecting rod 20 to the first fixing head 10 and the second fixing head 18 . Other compositions and connections are the same as in the first embodiment.

specific Embodiment approach 3

[0014] Specific implementation mode three: combination figure 1 This embodiment will be described. Both the first rotating member 13 and the second rotating member 15 in this embodiment are bearings. Such arrangement facilitates weight reduction and flexible rotation. Other compositions and connections are the same as those in Embodiment 1 or Embodiment 2.

technical field

[0001] The invention relates to an anti-vibration hammer for overhead lines, in particular to a line anti-vibration hammer with adjustable resonant frequency. Background technique

[0002] Breeze vibrations of transmission lines and wind vibrations of transmission towers often cause extremely harmful faults such as broken strands and broken wires of transmission lines, node connection damage of poles and towers, and many times caused serious large-scale power outages. There are three forms of wind-induced conductor vibration of overhead transmission lines: breeze vibration, sub-gap vibration and galloping, among which the breeze vibration of conductors occurs most frequently and has the greatest impact. The breeze vibration of the wire is due to the periodic "Karman vortex" excitation behind the wire when the wind blows through the wire vertically, which generates a force on the wire perpendicular to the wire and the wind direction, causing the wire to genera...

Examples

specific Embodiment approach 1

[0012] Specific implementation mode one: combine figure 1 Describe this embodiment, a line anti-vibration hammer with adjustable resonance frequency in this embodiment includes a wire clamp assembly 1 and a wire grommet 4, the wire grommet 4 is set on the wire 5, and the wire clamp assembly 1 is installed on the wire grommet 4 Above, the line anti-vibration hammer also includes an intermediate supporting plate 2, two resonance devices 3, a first connecting rod 11, a lower supporting plate 12, a first rotating member 13, a screw 14, a second rotating member 15, a pressing plate 16, a step Enter motor 17, worm gear 19, second connecting rod 20 and rotating rod 21, middle supporting plate 2 is connected with the lower end of clamp assembly 1 by screw, lower supporting plate 12 is installed on the lower end of middle supporting plate 2, and stepper motor 17 passes through The pressure plate 16 is installed on the lower supporting plate 12, the output end of the stepping motor 17 i...

specific Embodiment approach 2

[0013] Specific implementation mode two: combination figure 1 To illustrate this embodiment, the line anti-vibration hammer of this embodiment also includes a first fixed head 10 and a second fixed head 18, and the other end of the first connecting rod 11 and the other end of the second connecting rod 20 pass through the first fixed head 10 respectively. And the second fixed head 18 is rotatably connected with a resonance device 3 . Such arrangement facilitates the smooth rotation of the resonance device 3 , and also facilitates the connection of the other end of the first connecting rod 11 and the other end of the second connecting rod 20 to the first fixing head 10 and the second fixing head 18 . Other compositions and connections are the same as in the first embodiment.

specific Embodiment approach 3

[0014] Specific implementation mode three: combination figure 1 This embodiment will be described. Both the first rotating member 13 and the second rotating member 15 in this embodiment are bearings. Such arrangement facilitates weight reduction and flexible rotation. Other compositions and connections are the same as those in Embodiment 1 or Embodiment 2.

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