CN215528571U - Long wire clamp double-steel stranded wire type damper - Google Patents

Abstract

The utility model discloses a long wire clamp double-steel stranded wire type damper, which comprises a wire clamp, a connecting seat, a steel stranded wire and a hammer head, wherein the wire clamp is combined with a pre-stranded wire and hung on a power transmission conductor, the wire clamp is fixed at the top end of the connecting seat, two sides of the lower end of the connecting seat are fixedly connected with one end of the steel stranded wire, and the hammer head is fixedly connected with the other end of the steel stranded wire. Compare in traditional damper, the area of contact of fastener and wire can be increased in the setting of long fastener, produces stress concentration point on avoiding the wire, and the setting of two steel strands can increase damper's vibration energy consumption, can make damper steel strand wires rigidity in the vertical side be different from the rigidity on the horizontal direction, increases damper's antivibration frequency number, widens damper's antivibration frequency coverage. The utility model has the advantages of convenience, practicability, simple structure and wide application range, and can effectively improve the effect of the damper on inhibiting the breeze vibration amplitude of the overhead conductor.

Description

Long wire clamp double-steel stranded wire type damper

Technical Field

The utility model belongs to a vibration damper for an overhead transmission line, and particularly relates to a long wire clamp double-steel stranded wire type vibration damper.

Background

The rapid development of the economic society can not be separated from the transmission of electric power energy, the safe and stable operation of the power transmission line can be ensured, the economic benefit can be effectively improved, and the occurrence of the aeolian vibration of the overhead conductor is the most frequent and is the main reason for causing the damage of the power transmission line.

The breeze vibration is caused by that when low-speed incoming wind blows over a power transmission conductor, a Karman vortex which periodically falls off is generated on the leeward side of the conductor, and then the conductor is vibrated in a small amplitude, high frequency and long-time duration.

At present, the most widely used vibration-proof measure at home and abroad is to hang a vibration-proof hammer on a wire, and the running results of the past show that the vibration-proof hammer has obvious effect on restraining the breeze vibration of the wire.

According to the energy balance principle, when the wind gives energy to the wire to generate breeze vibration, the damper is hung on the wire to move together with the wire, the internal friction of the steel strand of the damper consumes most of the energy, the wire clamp of the damper consumes a part of the energy, the hammer head of the damper consumes a part of the energy due to air damping, and the consumption of the energy reduces the breeze vibration energy of the wire, so that the breeze vibration strength of the wire is reduced.

In the existing damper at home and abroad, the energy consumption of the FR type damper is insufficient, the vibration-proof frequency of the symmetrical damper is only two, the torque type damper is easy to generate larger concentrated stress on a wire in the use process, and the dampers can reduce the vibration intensity of breeze of the wire and have the defects.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to provide the long-wire-clamp double-steel-strand vibration damper, the long wire clamp is arranged in the vibration damper and matched with the double steel strands, the vibration damper is simple in structure, convenient and practical, wide in application range, and capable of effectively improving the effect of the vibration damper on inhibiting the breeze vibration amplitude of the overhead conductor.

In order to solve the technical problems, the technical scheme adopted by the utility model is as follows: a long wire clamp double-steel strand type damper is characterized by comprising a wire clamp, two hammers and four steel strands, wherein the four steel strands are arranged side by side in the horizontal direction in a group in pairs, one end of each group of steel strands is fixed with a connecting seat, the other end of each group of steel strands is connected with the hammers, and the connecting seat is connected with the wire clamp into a whole; the wire clamp is of a U-shaped thin plate structure, two holes are symmetrically formed in the U-shaped edge of the wire clamp, the direction of each hole is the same as the axis of the arc-shaped thin plate, the wire clamp penetrates through the wire clamp, the preformed armor rods penetrate through the holes, the two preformed armor rods are wound on the surface of a power transmission conductor, the inner side face of the arc-shaped thin plate is attached to the surface of the power transmission conductor, and the outer side face of the arc-shaped thin plate is fixedly connected with the connecting seat.

Furthermore, the outer side of the lower end of the connecting seat is provided with blind holes matched with the four cylindrical steel strands, and the blind holes are tightly matched with the strands.

Further, two the tup is flat U font, is located respectively the connecting seat both sides, the distance inequality of two tups and connecting seat is asymmetric distribution, and two tups are respectively with the other end fixed connection of a set of steel strand wires, and the tup quality is greater than other parts of damper.

Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:

(1) according to the utility model, the shape of the wire clamp is convenient to connect with the preformed armor rods, the area of the contact part of the wire clamp and the transmission conductor is increased, and the phenomenon that when the conductor is slightly vibrated by wind, stress concentration is generated at the connecting position of the conductor and the damper, and fatigue damage is avoided;

(2) the damper provided by the utility model can inhibit the breeze vibration of the wire and mainly consumes most energy by means of the internal friction of the steel strands, the vibration energy consumption of the damper can be effectively improved by increasing the arrangement of the double steel strands, and meanwhile, the rigidity of the damper steel strands in the vertical direction can be different from the rigidity of the damper steel strands in the horizontal direction due to the horizontal parallel arrangement of the two steel strands, so that the number of vibration-proof frequencies of the damper is increased, and the vibration-proof frequency coverage range of the damper is widened;

(3) the damper only comprises the wire clamp, the connecting seat, the steel strand and the hammer head, is convenient and practical, has a simple structure and a wide application range, and can effectively improve the effect of the damper on inhibiting the breeze vibration amplitude of the overhead conductor.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the installation of the present invention;

FIG. 3 is a front view of the present invention;

FIG. 4 is a top view of the present invention;

FIG. 5 is a side view of the present invention;

in the drawing, the device comprises a wire clamp 1, a wire clamp 11, a hole 12, a preformed armor rod 13, a conducting wire 2, a connecting seat 3, a steel strand 4 and a hammer.

Detailed Description

The present invention is further described with reference to the accompanying drawings and the specific embodiments, and it should be noted that, in the present invention, various embodiments or technical features described below may be arbitrarily combined into a new embodiment without conflict.

As shown in fig. 1-5, the utility model specifically relates to a long-clamp double-steel-strand damper, which comprises a wire clamp 1, a connecting seat 2, a steel strand 3 and a hammer head 4, wherein the wire clamp 1 is combined with a pre-twisted wire 12 and hung on a power transmission lead 13, the wire clamp 1 is fixed at the top end of the connecting seat 2, two sides of the lower end of the connecting seat 2 are fixedly connected with one end of the steel strand 3, and the hammer head 4 is fixedly connected with the other end of the steel strand 3.

The device comprises a connecting seat 2, a hammer head 1, a connecting seat 2 and a wire clamp 3, wherein the number of the hammer heads is two, the number of the steel strands is 4, the 4 steel strands 3 are arranged in pairs in parallel in the horizontal direction, one end of each group of the steel strands 3 is fixed with the connecting seat 2, the other end of each group of the steel strands is connected with the hammer head 4, and the connecting seat 2 is connected with the wire clamp 1 into a whole; the wire clamp 1 is of a U-shaped thin plate structure, the middle of the wire clamp 1 is arc-shaped, two holes 11 are symmetrically formed in the U-shaped edge of the wire clamp 1, the direction of each hole 11 is the same as the axis of the U-shaped thin plate and penetrates through the wire clamp 1, the preformed armor rods 12 penetrate through the holes 11, the two preformed armor rods 12 are wound on the surface of a power transmission line, the arc-shaped part of the inner side face of the U-shaped thin plate is attached to the surface of the power transmission line, and the outer side face of the U-shaped thin plate is fixedly connected with the connecting seat 2. The outer side of the lower end of the connecting seat 2 is provided with blind holes matched with the four cylindrical steel stranded wires 3, and the blind holes are tightly matched with the stranded wires 3. Tup 4 is flat U font, is located connecting seat 2 both sides respectively, and two tups 4 are asymmetric distribution with the distance inequality of connecting seat 2 to two tups 4 are respectively with the other end fixed connection of a set of steel strand wires 3, 4 quality of tup are greater than other parts of damper.

The wire clamp 1 is a pre-twisted wire type wire clamp, the pre-twisted wire 12 penetrates through the wire clamp 1 and is wound on the lead 13, and then the damper is hung on the lead 13, and compared with the conventional pre-twisted wire type wire clamp, the length of the wire clamp 1 in the lead direction is increased.

Compared with the traditional preformed helical damper, the U-shaped structure of the wire clamp 1 can increase the contact area between the wire clamp 1 and the lead 13, avoids generating a stress concentration point on the lead 13 and avoids the lead 13 from generating fatigue and strand breakage at the suspension point position of the damper.

The damper suppresses the breeze vibration of the wire and mainly consumes most energy by means of the internal friction of the steel strand, and compared with the traditional single-steel-strand damper, the double-steel-strand damper can increase the vibration energy consumption of the damper. Meanwhile, the two steel strands are horizontally arranged side by side, so that the rigidity of the damper in the vertical direction is different from the rigidity of the damper in the horizontal direction, the number of vibration-proof frequencies of the damper is increased, the vibration-proof frequency coverage range of the damper is widened, and the using effect and the application range of the damper are improved.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.

Claims (3)

1. A long wire clamp double-steel strand type damper is characterized by comprising a wire clamp (1), two hammers (4) and four steel strands (3), wherein the four steel strands (3) are arranged side by side in the horizontal direction in a group of two, one end of one group of steel strands (3) is fixed with a connecting seat (2), the other end of the one group of steel strands is connected with the hammers (4), and the connecting seat (2) is connected with the wire clamp (1) into a whole; fastener (1) is U font sheet metal structure, and its middle part is the arc, and the U font edge symmetry of fastener (1) is equipped with two holes (11), and hole (11) direction and the axis syntropy of U font sheet metal, and run through fastener (1), passes preformed armor rods (12) in hole (11), and two preformed armor rods (12) twine in power transmission line surface, U font sheet metal medial surface arc part and power transmission line surface laminating, U font sheet metal lateral surface and connecting seat (2) rigid coupling.

2. The damper of claim 1, wherein the outer side of the lower end of the connecting base (2) is provided with a blind hole matched with four cylindrical steel strands (3), and the blind hole is tightly matched with the strands (3).

3. The damper of claim 1, wherein the two hammers (4) are in a flat U shape and located on two sides of the connecting seat (2), the distance between the two hammers (4) and the connecting seat (2) is unequal, and the two hammers (4) are asymmetrically distributed, the two hammers (4) are fixedly connected with the other ends of the steel strands (3), and the mass of the hammers (4) is larger than that of the other parts of the damper.

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