CN117424163A - Pre-hinged power transmission line vibration damper - Google Patents

Abstract

The invention discloses a pre-hinged vibration damper for a power transmission line, which comprises steel strands, a wire clamp assembly and a vibration prevention assembly, wherein the two ends of each steel strand are fixedly and pressure-connected with first sleeves, the lower part of each first sleeve is provided with two hanging plates, and the lower ends of the two hanging plates are rotatably connected with a first rotating shaft; the vibration-proof assembly comprises a U-shaped connecting frame, the upper end of the U-shaped connecting frame is fixedly connected with a first rotating shaft, first windward plates are fixedly connected to two sides of the outer portion of the U-shaped connecting frame, a stuffing box is connected to the inner side of the U-shaped connecting frame, and counterweight stuffing is arranged inside the stuffing box. According to the invention, the stuffing box and the U-shaped connecting frame move reversely, and force in the direction opposite to the wind direction is applied to the steel stranded wire, so that the wire is prevented from waving, the inclination angle of the stuffing box is increased along with the increase of wind force, the counterweight stuffing rolling towards one end of the stuffing box is increased, and the dynamic adjustment of the damper for preventing waving is realized.

Description

Pre-hinged power transmission line vibration damper

Technical Field

The invention belongs to the field of damper, and particularly relates to a pre-hinged damper for a power transmission line.

Background

In high voltage transmission systems, wires between transmission towers are subjected to external excitation such as wind loads, causing them to vibrate periodically. Such long-term vibration not only reduces the service life of the wires, but also may cause damage to the connection hardware between the wires and the tower, and even causes structural damage to the entire tower when serious. Therefore, how to effectively reduce the negative effect of such vibrations on the power transmission system is an important problem facing the current power industry.

Currently, in order to solve this problem, a damper is generally installed between high-voltage transmission lines. The damper reduces the impact of the damper on the pole tower and the connecting hardware by consuming the vibration energy of the wire. However, the conventional damper is relatively simple in structure and is not ideal in energy consumption effect. When the wire vibrates, the damper dissipates energy mainly by internal friction of the steel strands suspending the mass hammer. The energy consumption effect of this mode is lower, and the efficiency of damper can be reduced after long-term use.

The existing damper designs suffer from some significant drawbacks. First, their weight is constant, which means that their energy dissipation capacity is relatively constant. Such a damper may not efficiently absorb and dissipate energy if the vibration amplitude of the wire is large when excited against the outside such as wind load, and thus may not efficiently suppress the vibration of the wire. Secondly, existing anti-vibration hammers lack an optimal design for energy dissipation, which makes them not optimal for handling large vibrations.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provides a pre-hinged power transmission line damper to solve the problem that the conventional damper cannot cope with large swing of a wire due to relatively constant energy dissipation capacity.

In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:

the pre-hinged power transmission line vibration damper comprises steel strands, a wire clamp assembly and a vibration prevention assembly, wherein first sleeves are fixedly connected with two ends of each steel strand in a pressing mode, two hanging plates are arranged on the lower portion of each first sleeve, and the lower ends of the two hanging plates are rotatably connected with a first rotating shaft; the wire clamp assembly comprises a second sleeve which is in compression joint with the middle of the steel strand, a lower clamp is arranged on the upper portion of the second sleeve, an upper clamp is arranged on the upper portion of the lower clamp, one end of the lower clamp is hinged with one end of the upper clamp through a pin shaft, one side of the lower clamp is hinged with a fastening bolt, a fastening nut is connected onto the fastening bolt in a threaded manner, and a clamping groove for accommodating the fastening bolt is formed in one side of the upper clamp; the vibration-proof assembly comprises a U-shaped connecting frame, the upper end of the U-shaped connecting frame is fixedly connected with a first rotating shaft, first windward plates are fixedly connected to two sides of the outer portion of the U-shaped connecting frame, a stuffing box is connected to the inner side of the U-shaped connecting frame, and counterweight stuffing is arranged inside the stuffing box.

Further, one side of the upper clamp is provided with an anti-falling clamping table.

Further, a first gear is fixedly connected to the first rotating shaft, a second rotating shaft is arranged at the lower part of the first rotating shaft, a second gear is fixedly connected to the second rotating shaft, the first gear is meshed with the second gear, and the first gear and the second gear are installed inside the first gear box; the connecting arms are fixedly connected to two ends of the second rotating shaft, the fourth rotating shaft is fixedly connected to two sides of the stuffing box, and the lower end of the connecting arm is connected with the fourth rotating shaft.

Still further, fixedly connected with fourth gear in the fourth pivot, fourth pivot upper portion is equipped with the third pivot, fixedly connected with third gear in the third pivot, third gear and fourth gear are all installed in the second gear box, third pivot one end and linking arm fixed connection.

Further, the stuffing box is of a V structure, and a plurality of accommodating grooves are formed in the inclined edges on two sides of the stuffing box.

Further, the stuffing box is rectangular frame structure, stuffing box upper portion bilateral symmetry is connected with first fixing base, the stuffing box outside is equipped with the sliding frame, fourth pivot one end and sliding frame fixed connection, the sliding frame lower part is equipped with the recess, the stuffing box bottom is equipped with the intercommunicating pore that link up with the recess upper portion opening, sliding frame upper portion is equipped with the apron, the apron both sides are equipped with the guide slot, and the guide slot cooperatees with first fixing base, apron middle part fixedly connected with second fixing base, be connected with reset spring between first fixing base and the second fixing base.

Further, bevel angles are arranged on two sides of the stuffing box.

Further, a plurality of second windward plates are arranged on two sides of the lower part of the stuffing box.

Further, a plurality of vent holes are formed in the side wall of the stuffing box, and the width of each vent hole is smaller than the diameter of the counterweight stuffing.

Further, limiting elastic pieces are arranged on two sides of the first gear box, and the limiting elastic pieces are of a V structure.

The beneficial effects of the invention are as follows:

1) When the first windward plate is blown by the crosswind, the U-shaped connecting frame drives the stuffing box to turn over, the counterweight stuffing in the stuffing box rolls towards one end of the stuffing box, and the stuffing box applies force opposite to the wind direction to the steel stranded wires, so that the galloping of the wires is avoided, the inclination angle of the stuffing box is increased along with the increase of the wind force, the counterweight stuffing rolling towards one end of the stuffing box is increased, and the dynamic adjustment of the anti-galloping of the damper is realized.

2) The first gear is arranged on the first rotating shaft, the second rotating shaft and the second gear are arranged at the lower part of the first gear, the connecting arms are fixedly connected at the two ends of the second rotating shaft, the lower ends of the connecting arms are connected with the stuffing box, when wind force blows the first windward plate to drive the U-shaped connecting frame to rotate clockwise around the first rotating shaft, the first gear on the first rotating shaft drives the second gear to rotate anticlockwise, and accordingly the rotating direction of the stuffing box is opposite to the rotating direction of the U-shaped connecting frame and the first windward plate through the connecting arms, so that the galloping of wires is offset, and the vibration-proof effect of the damper is enhanced.

3) A fourth gear is arranged on the fourth rotating shaft, a third rotating shaft and a third gear are arranged on the upper part of the fourth rotating shaft, and one end of the third rotating shaft is fixedly connected with the connecting arm; when wind force blows the first windward plate to drive the U-shaped connecting frame to rotate clockwise around the first rotating shaft, the connecting arm rotates anticlockwise around the second rotating shaft, the third rotating shaft at the lower end of the connecting arm drives the third gear to revolve anticlockwise around the second rotating shaft, the third gear drives the fourth gear to rotate clockwise, the fourth gear drives the stuffing box to incline to the right side through the fourth rotating shaft, so that counterweight stuffing in the stuffing box moves to the right side of the stuffing box, the moment of the stuffing box on a steel stranded wire is increased, and the vibration prevention effect of the damper is further enhanced.

4) The stuffing box adopts a V structure, and a plurality of accommodating grooves are formed in the inclined edges on two sides of the stuffing box, so that after the stuffing box is inclined, the counterweight filler relatively intensively falls into the accommodating grooves, thereby being beneficial to maintaining the relative stability of the stuffing box and avoiding the counterweight filler from rolling back and forth in the stuffing box to cause oscillation of the stuffing box.

5) The stuffing box adopts a rectangular frame structure, a sliding frame is arranged outside the stuffing box, when the fourth rotating shaft drives the sliding frame to rotate, the counterweight filler in the groove of the sliding frame rolls into the end part of the stuffing box through the communication hole, and meanwhile, the stuffing box slides in the sliding frame, so that the stuffing box slides towards one end of the sliding frame, the arm of force of the stuffing box on the first rotating shaft is prolonged, the vibration-proof effect of the damper is further enhanced, and after wind power disappears, the stuffing box automatically resets under the action of the reset spring, and the counterweight filler in the stuffing box falls into the groove again; in addition, bevel angles are arranged on two sides of the stuffing box, so that after the stuffing box is reset, the counterweight stuffing can quickly roll into the groove of the sliding frame from the stuffing box

6) The two sides of the lower part of the stuffing box are provided with a plurality of second windward plates, and the second windward plates enlarge the overturning angle of the stuffing box, so that the anti-galloping effect of the damper is enhanced; the side wall of the stuffing box is provided with a plurality of ventilation holes, and the ventilation holes reduce the influence of axial wind power of the wire on the damper, so that the torsional damage of the wire clamp assembly to the wire is reduced.

7) Limiting elastic pieces are arranged on two sides of the first gear box, so that the overturning angle of the packing box is limited, and the first gear box is prevented from being deformed or damaged due to frequent collision between the packing box and the first gear box.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment 1 of a damper for a pre-hinged transmission line of the present invention.

Fig. 2 is a schematic structural diagram of a wire clamp assembly in a damper for a pre-hinged transmission line.

Fig. 3 is an assembly schematic diagram of a vibration isolation assembly, a first gear box and a second gear box in a pre-hinged transmission line vibration isolation hammer according to the present invention.

Fig. 4 is an internal schematic view of a first gear box and a second gear box in a pre-hinged damper for a power transmission line according to the present invention.

Fig. 5 is a schematic diagram of the internal structure of a stuffing box according to an embodiment 1 of the damper for a pre-hinged transmission line of the present invention.

Fig. 6 is a schematic structural diagram of an embodiment 2 of a damper for a pre-hinged power transmission line according to the present invention.

Fig. 7 is a schematic structural diagram of a stuffing box of an embodiment 2 of a damper for a pre-hinged transmission line according to the present invention.

Fig. 8 is a schematic diagram of a sliding frame structure of a damper for a pre-hinged power transmission line.

Fig. 9 is a schematic bottom view of a stuffing box of pre-hinged power transmission line damper embodiment 2 of the present invention.

In the figure: 1. steel strand; 101. a first sleeve; 102. a hanger plate; 2. a wire clamp assembly; 201. a second sleeve; 202. a lower clamp; 203. a clamping hoop is arranged; 204. an anti-falling clamping table; 205. a fastening bolt; 206. a fastening nut; 3. a vibration prevention assembly; 301. a U-shaped connecting frame; 302. a first windward plate; 303. a stuffing box; 304. a counterweight filler; 305. a vent hole; 306. a second windward plate; 307. a receiving groove; 308. a sliding frame; 309. a cover plate; 310. a groove; 311. a first fixing seat; 312. the second fixing seat; 313. a return spring; 314. a communication hole; 4. a first gear box; 401. a first rotating shaft; 402. a first gear; 403. a second rotating shaft; 404. a second gear; 405. a connecting arm; 406. a limiting spring plate; 5. a second gear box; 501. a third rotating shaft; 502. a third gear; 503. a fourth rotating shaft; 504. and a fourth gear.

Detailed Description

The following description of the embodiments of the present invention will be made more fully hereinafter with reference to the accompanying drawings, in which it is shown, however, in an illustrative embodiment of the invention, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention, and do not indicate or imply that the devices or elements referred to must have a particular orientation, a particular orientation configuration and operation, and thus should not be construed as limiting the present invention.

Example 1

As shown in fig. 1, the pre-hinged vibration damper for the power transmission line comprises a steel strand 1, a wire clamp assembly 2 and a vibration prevention assembly 3, wherein two ends of the steel strand 1 are fixedly and pressure-connected with first sleeves 101, two hanger plates 102 are arranged at the lower part of each first sleeve 101, and the lower ends of the two hanger plates 102 are rotatably connected with a first rotating shaft 401; as shown in fig. 2, the wire clamp assembly 2 comprises a second sleeve 201 crimped in the middle of the steel strand 1, a lower clamp 202 is arranged at the upper part of the second sleeve 201, an upper clamp 203 is arranged at the upper part of the lower clamp 202, one end of the lower clamp 202 and one end of the upper clamp 203 are hinged through a pin shaft, one side of the lower clamp 202 is hinged with a fastening bolt 205, the fastening bolt 205 is connected with a fastening nut 206 through threads, one side of the upper clamp 203 is provided with a clamping groove for accommodating the fastening bolt 205, when the wire clamp assembly 2 is connected with a wire, the upper clamp 203 is bypassed from the upper part of the wire, the wire is positioned between the upper clamp 203 and the lower clamp 202, and then the fastening bolt 205 is turned into the clamping groove and fixed by the fastening nut 206; as shown in fig. 3, the vibration isolation assembly 3 includes a U-shaped connecting frame 301, the upper end of the U-shaped connecting frame 301 is fixedly connected with a first rotating shaft 401, two sides of the outer portion of the U-shaped connecting frame 301 are fixedly connected with a first windward plate 302, the inner side of the U-shaped connecting frame 301 is connected with a packing box 303, a counterweight filler 304 is arranged in the packing box 303, and the counterweight filler 304 is selected from iron balls, lead balls, concrete blocks or glass marble according to the use environment; for example, iron balls are selected in a rainless area, so that rust of the iron balls is avoided, and meanwhile, the effect of weight balancing is ensured; in rainy and humid areas, lead balls are selected, in areas with smaller wind power, glass marbles and the like are selected, and various counterweight fillers 304 can be mixed for use.

As shown in fig. 2, an anti-falling clamping table 204 is arranged on one side of the upper clamping band 203, so as to prevent the fastening bolt 205 from sliding out of the clamping groove.

As shown in fig. 4, a first gear 402 is fixedly connected to the first rotating shaft 401, a second rotating shaft 403 is arranged at the lower part of the first rotating shaft 401, a second gear 404 is fixedly connected to the second rotating shaft 403, the first gear 402 is meshed with the second gear 404, and the first gear 402 and the second gear 404 are installed inside the first gear box 4; connecting arms 405 are fixedly connected to two ends of the second rotating shaft 403, a fourth rotating shaft 503 is fixedly connected to two sides of the stuffing box 303, and the lower end of the connecting arms 405 is connected with the fourth rotating shaft 503; when wind blows the first windward plate 302 to drive the U-shaped connecting frame 301 to rotate clockwise around the first rotating shaft 401, the first gear 402 on the first rotating shaft 401 drives the second gear 404 to rotate anticlockwise, so that the connecting arm 405 rotates anticlockwise around the second rotating shaft 403, and the rotating direction of the stuffing box 303 is opposite to the rotating direction of the U-shaped connecting frame 301 and the first windward plate 302, so that the galloping of the wires is counteracted, and the vibration-proof effect of the damper is enhanced.

As shown in fig. 4, a fourth gear 504 is fixedly connected to the fourth rotating shaft 503, a third rotating shaft 501 is provided at the upper part of the fourth rotating shaft 503, a third gear 502 is fixedly connected to the third rotating shaft 501, the third gear 502 and the fourth gear 504 are both installed in the second gear box 5, and one end of the third rotating shaft 501 is fixedly connected with the connecting arm 405; when wind blows the first windward plate 302 to drive the U-shaped connecting frame 301 to rotate clockwise around the first rotating shaft 401, the connecting arm 405 rotates anticlockwise around the second rotating shaft 403, the third rotating shaft 501 at the lower end of the connecting arm 405 drives the third gear 502 to revolve anticlockwise around the second rotating shaft 403, the third gear 502 drives the fourth gear 504 to rotate clockwise, and the fourth gear 504 drives the stuffing box 303 to incline to the right side through the fourth rotating shaft 503, so that the counterweight stuffing 304 in the stuffing box 303 moves to the right side of the stuffing box 303, the moment of the stuffing box 303 on the steel strand 1 is increased, and the vibration preventing effect of the damper is further enhanced.

As shown in fig. 5, the stuffing box 303 has a V-shaped structure, and a plurality of accommodating grooves 307 are formed on the oblique sides of the two sides of the stuffing box 303, and when the stuffing box 303 is inclined, the counterweight filler 304 relatively and intensively falls into the accommodating grooves 307, which is beneficial to maintaining the relative stability of the stuffing box 303, and avoiding the oscillation of the stuffing box 303 caused by the counterweight filler 304 rolling back and forth in the stuffing box 303.

As shown in fig. 5 and 7, two sides of the lower portion of the stuffing box 303 are respectively provided with a plurality of second windward plates 306, and the second windward plates 306 enlarge the overturning angle of the stuffing box 303, so that the anti-galloping effect of the damper is enhanced.

As shown in fig. 5 and 7, the side wall of the stuffing box 303 is provided with a plurality of ventilation holes 305, the width of the ventilation holes 305 is smaller than the diameter of the counterweight stuffing 304, and the ventilation holes 305 reduce the influence of axial wind power of the wires on the damper, thereby reducing the torsional damage of the wire clamp assembly 2 to the wires.

As shown in fig. 3-4, the two sides of the first gear case 4 are provided with limiting elastic pieces 406, the limiting elastic pieces 406 are in a V structure, the limiting elastic pieces 406 limit the turning angle of the stuffing box 303, and the deformation or damage of the first gear case 4 caused by frequent collision between the stuffing box 303 and the first gear case 4 is avoided.

When the damper is used, the wire clamp assembly 2 is clamped on a wire, in the case of right incoming wind, wind blows the first windward plate 302 to drive the U-shaped connecting frame 301 to rotate clockwise around the first rotating shaft 401, the first gear 402 on the first rotating shaft 401 drives the second gear 404 to rotate anticlockwise, so that the third rotating shaft 501 at the lower end of the connecting arm 405 drives the third gear 502 to revolve anticlockwise around the second rotating shaft 403 through the connecting arm 405, the third gear 502 drives the fourth gear 504 to rotate clockwise, the fourth gear 504 drives the packing box 303 to incline to the right through the fourth rotating shaft 503, the counterweight filler 304 in the packing box 303 moves to the right side of the packing box 303, the moment of the packing box 303 on the first rotating shaft 401 is utilized to offset wind load, and the damper is used for realizing the damper anti-galloping effect on the wire; in addition, when the counterweight filler 304 moves to the right side of the stuffing box 303, the counterweight filler 304 impacts the stuffing box 303 to generate certain noise, and plays a certain role in warning ground personnel.

Example 2

6-8, the stuffing box 303 is in a rectangular frame structure, two sides of the upper portion of the stuffing box 303 are symmetrically connected with a first fixing seat 311, a sliding frame 308 is arranged outside the stuffing box 303, one end of a fourth rotating shaft 503 is fixedly connected with the sliding frame 308, a groove 310 is arranged at the lower portion of the sliding frame 308, a communication hole 314 communicated with the upper opening of the groove 310 is arranged at the bottom of the stuffing box 303, the upper portion of the sliding frame 308 is opened, the stuffing box 303 is conveniently placed, a cover plate 309 is arranged at the upper portion of the sliding frame 308, guide grooves are arranged at two sides of the cover plate 309 and are matched with the first fixing seat 311, a second fixing seat 312 is fixedly connected at the middle portion of the cover plate 309, and a reset spring 313 is connected between the first fixing seat 311 and the second fixing seat 312; when the fourth rotating shaft 503 drives the sliding frame 308 to rotate, the counterweight filler 304 in the groove 310 of the sliding frame 308 rolls into the end part of the filler box 303 through the communication hole 314, and meanwhile, the filler box 303 slides in the sliding frame 308, so that the filler box 303 slides towards one end of the sliding frame 308, the arm of force of the filler box 303 to the first rotating shaft 401 is prolonged, the vibration-proof effect of the vibration damper is further enhanced, and when the wind force disappears, the filler box 303 automatically resets under the action of the reset spring 313, and the counterweight filler 304 in the filler box 303 falls into the groove 310 again.

As shown in fig. 7 and 9, bevel angles are arranged on two sides of the stuffing box 303, so that after the stuffing box 303 is reset, the counterweight stuffing 304 rapidly rolls into the groove 310 of the sliding frame 308 from the stuffing box 303.

When the counterweight filler 304 moves to one end of the stuffing box 303, the stuffing box 303 slides to one end of the sliding frame 308, so that the arm of force of the stuffing box 303 to the first rotating shaft 401 is prolonged, and the vibration-proof effect of the damper is enhanced.

The foregoing is merely illustrative and explanatory of the invention, as it is well within the scope of the invention as claimed, as it relates to various modifications, additions and substitutions for those skilled in the art, without departing from the inventive concept and without departing from the scope of the invention as defined in the accompanying claims.

Claims (10)

1. The pre-hinged power transmission line vibration damper comprises steel strands, a wire clamp assembly and a vibration prevention assembly, wherein first sleeves are fixedly connected with two ends of each steel strand in a pressing mode, two hanging plates are arranged on the lower portion of each first sleeve, and the lower ends of the two hanging plates are rotatably connected with a first rotating shaft; the wire clamp assembly comprises a second sleeve which is in compression joint with the middle of the steel strand, a lower clamp is arranged on the upper portion of the second sleeve, an upper clamp is arranged on the upper portion of the lower clamp, one end of the lower clamp is hinged with one end of the upper clamp through a pin shaft, one side of the lower clamp is hinged with a fastening bolt, a fastening nut is connected onto the fastening bolt in a threaded manner, and a clamping groove for accommodating the fastening bolt is formed in one side of the upper clamp; the vibration-proof assembly is characterized by comprising a U-shaped connecting frame, wherein the upper end of the U-shaped connecting frame is fixedly connected with a first rotating shaft, two sides of the outer portion of the U-shaped connecting frame are fixedly connected with first windward plates, the inner side of the U-shaped connecting frame is connected with a stuffing box, and counterweight stuffing is arranged inside the stuffing box.

2. The pre-hinged power transmission line vibration damper according to claim 1, wherein an anti-falling clamping table is arranged on one side of the upper clamping hoop.

3. The pre-hinged transmission line vibration damper according to claim 1, wherein a first gear is fixedly connected to the first rotating shaft, a second rotating shaft is arranged at the lower part of the first rotating shaft, a second gear is fixedly connected to the second rotating shaft, the first gear is meshed with the second gear, and the first gear and the second gear are installed inside the first gear box; the connecting arms are fixedly connected to two ends of the second rotating shaft, the fourth rotating shaft is fixedly connected to two sides of the stuffing box, and the lower end of the connecting arm is connected with the fourth rotating shaft.

4. The pre-hinged transmission line vibration damper according to claim 3, wherein a fourth gear is fixedly connected to the fourth rotating shaft, a third rotating shaft is arranged on the upper portion of the fourth rotating shaft, a third gear is fixedly connected to the third rotating shaft, the third gear and the fourth gear are both installed in the second gear box, and one end of the third rotating shaft is fixedly connected with the connecting arm.

5. The damper for pre-hinged transmission lines of claim 4, wherein the stuffing box has a V-shape and a plurality of receiving grooves are provided on the oblique sides of the stuffing box.

6. The pre-hinged power transmission line vibration damper according to claim 4, wherein the stuffing box is of a rectangular frame structure, the two sides of the upper part of the stuffing box are symmetrically connected with first fixing seats, a sliding frame is arranged outside the stuffing box, one end of the fourth rotating shaft is fixedly connected with the sliding frame, a groove is arranged at the lower part of the sliding frame, a communication hole communicated with an upper opening of the groove is formed in the bottom of the stuffing box, an opening is formed in the upper part of the sliding frame, a cover plate is arranged at the upper part of the sliding frame, guide grooves are formed in two sides of the cover plate and matched with the first fixing seats, a second fixing seat is fixedly connected in the middle of the cover plate, and a reset spring is connected between the first fixing seat and the second fixing seat.

7. The pre-hinged transmission line damper of claim 6, wherein the stuffing box is provided with bevel angles on both sides.

8. A pre-hinged transmission line damper according to claim 5 or 6, wherein the stuffing box is provided with a plurality of second windward plates on both sides of the lower part.

9. A pre-hinged power transmission line damper as claimed in claim 5 or 6, wherein the side wall of the stuffing box is provided with a plurality of ventilation holes, and the width of the ventilation holes is smaller than the diameter of the counterweight stuffing.

10. The pre-hinged power transmission line vibration damper according to claim 3 or 4, wherein limiting spring pieces are arranged on two sides of the first gear box, and the limiting spring pieces are of a V structure.