CN212114717U

CN212114717U - Vibration-proof shaft for split conductor of overhead transmission line

Info

Publication number: CN212114717U
Application number: CN202020871589.3U
Authority: CN
Inventors: 刘静; 蔡萌琦; 周林抒; 杜洋; 郑鸣宇
Original assignee: Chengdu University
Current assignee: Chengdu University
Priority date: 2020-05-22
Filing date: 2020-05-22
Publication date: 2020-12-08
Anticipated expiration: 2030-05-22

Abstract

The utility model discloses an overhead transmission line split conductor anti-vibration shaft, which comprises a counterweight shaft, a connecting strip, a first rotating ring, a second rotating ring, a line fixing piece and steel balls; the counterweight shaft is arranged at the center of the first rotating ring, the counterweight shaft is fixedly connected with the first rotating ring through a connecting strip, the second rotating ring is sleeved outside the first rotating ring, the steel balls are arranged between the first rotating ring and the second rotating ring, and the circuit fixing pieces are symmetrically arranged on the outer wall of the second rotating ring; when the transmission line is blown by wind power, the transmission line can rotate to a certain degree along the second rotating ring, the swinging force is converted into the torsion, when a plurality of transmission lines are arranged at intervals, the torsion directions among different anti-vibration shafts are not needed due to uncertainty of the wind power, the torsion can be counteracted to a certain degree, and the swinging force of the whole line is dispersed, so that the occurrence of conductor sublevel distance oscillation is greatly reduced.

Description

Vibration-proof shaft for split conductor of overhead transmission line

Technical Field

The utility model belongs to the technical field of the transmission line protection technique and specifically relates to an overhead transmission line split conductor antivibration axle.

Background

Under the action of wind load, the split conductor of the overhead transmission line can generate subspan oscillation, so that the loss of electric power is caused slightly, and the potential safety hazards of lives and properties of people are brought heavily. The overhead line in China has certain looseness due to factors such as service life, too large transmission span and the like, so that the sublevel oscillation of the split conductors of the transmission line is enhanced.

At present, due to the immature technology and the imperfect related data, the problem of subspan oscillation of split conductors of the overhead transmission line cannot be completely solved, and a large space is provided for safe operation of the overhead transmission line. Therefore, a split conductor vibration-proof device which is simple and convenient to operate, easy to install and ingenious in structure is needed.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at: aiming at the problems, the split conductor anti-vibration shaft for the overhead transmission line is provided, and the problem that the split conductor subspan oscillation is caused due to the fact that the overhead transmission line is loose due to various factors in the prior art is solved.

The scheme is realized as follows:

an overhead transmission line split conductor anti-vibration shaft: the device comprises a counterweight shaft, a connecting bar, a first rotating ring, a second rotating ring, a line fixing piece and steel balls; the counterweight shaft is arranged at the center of the first rotating ring and is fixedly connected with the first rotating ring through a connecting strip, the second rotating ring is sleeved outside the first rotating ring, the steel balls are arranged between the first rotating ring and the second rotating ring, and the circuit fixing pieces are symmetrically arranged on the outer wall of the second rotating ring.

Preferably, the connecting strips are uniformly arranged along the outer wall of the counterweight shaft, one end of each connecting strip is fixedly connected with the outer wall of the counterweight shaft, the other end of each connecting strip is fixedly connected with the inner wall of the first rotating ring, and the center of the counterweight shaft is collinear with the center of the first rotating ring.

Preferably, the counterweight shaft is a metal shaft, and the diameter of the counterweight shaft is not less than 1/3.

Preferably, the diameter of the second rotating ring is not smaller than the safety distance between two wires of the power transmission line.

Preferably, the steel balls are fully distributed along the gap between the first rotating ring and the second rotating ring, so that the first rotating ring, the second rotating ring and the steel balls form a large bearing, and the steel balls can freely rotate along the gap between the first rotating ring and the second rotating ring.

Preferably, the first rotating ring, the second rotating ring, the counterweight shaft and the line fixing piece are all made of metal materials, and insulating layers are arranged on the first rotating ring, the second rotating ring, the counterweight shaft and the line fixing piece.

Preferably, the upper and lower end surfaces between the first rotating ring and the second rotating ring may be provided with protective covers.

Preferably, the circuit fixing member may have a hollow cylindrical structure, and the circuit fixing member fixes the circuit conducting wire.

This scheme provides an automatic control deicing system, includes multiunit deicing device, deicing device sets up along whole transmission line interval respectively.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. the counterweight shaft of the utility model is a metal shaft, the diameter of the counterweight shaft is not less than 1/3 of the diameter of the second rotating ring, when the device is used, two parallel transmission lines are respectively fixed with the line fixing piece, because the second rotating ring is slightly larger than the distance between the two wires, the second rotating ring can play a role in separating the two wires and prevent the wires from contacting and winding, because the counterweight shaft is heavier, the counterweight shaft can also have a function of falling and tightening the transmission line, when the transmission line is blown by wind power, the transmission line can rotate to a certain degree along the second rotating ring to convert the swinging force into the torsion, when a plurality of transmission lines are arranged at intervals, because of the uncertainty of wind power, the torsion directions between different anti-vibration shafts are not used, the torsion can be offset to a certain degree, and the swinging force of the whole circuit is dispersed, so that the occurrence of conductor span oscillation is greatly reduced.

2. The utility model discloses a superior performance, simple structure, easily operation have very big development and wide application potentiality.

Drawings

Fig. 1 is a schematic top view of the whole structure of the present invention;

fig. 2 is an axonometric view of the transmission line of the present invention;

the labels in the figure are: 1. a counterweight shaft; 2. a connecting strip; 3. a first rotating ring; 4. a second rotating ring; 5. a circuit fixing member; 6. steel balls; 7. and (4) conducting wires.

Detailed Description

All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.

Any feature disclosed in this specification (including any accompanying claims, abstract) may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the designated device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature.

Example 1

As shown in fig. 1-2, the split conductor vibration-proof shaft for the overhead transmission line comprises a counterweight shaft 1, a connecting bar 2, a first rotating ring 3, a second rotating ring 4, a line fixing member 5 and steel balls 6; the counterweight shaft 1 is arranged at the center of the first rotating ring 3, the counterweight shaft 1 is fixedly connected with the first rotating ring 3 through the connecting strip 2, the second rotating ring is sleeved outside the first rotating ring 3, the steel balls 6 are arranged between the first rotating ring 3 and the second rotating ring 4, and the line fixing piece 5 is symmetrically arranged on the outer wall of the second rotating ring 4.

Based on above-mentioned structure, fix overhead line's wire 7 respectively on circuit mounting 5, when wire 7 under the effect of wind, can drive second rotating ring 4 and take place to rotate for first rotating ring 3 to the wire 7 that makes to be fixed by the circuit mount takes place the distortion of certain degree, thereby reaches the purpose of tightening up wire 7, because the tightening up of wire 7 just can chair wire 7's secondary pitch oscillation.

The connecting strip 2 evenly sets up along the outer wall of counter weight axle 1, the one end of connecting strip 2 and the outer wall fixed connection of counter weight axle 1, the other end and the inner wall fixed connection of first rotating collar 3, the center of counter weight axle 1 and the center collineation of first rotating collar 3 make 7 both sides atress of wire balanced relatively when rotating.

The steel balls 6 are fully distributed along the gap between the first rotating ring 3 and the second rotating ring 4, so that the first rotating ring 3, the second rotating ring 4 and the steel balls 6 form a large bearing, the steel balls 6 can freely rotate along the gap between the first rotating ring 3 and the second rotating ring 4, the movable small steel balls 6 can effectively reduce friction resistance, reduce loss and prolong the service life of the anti-vibration shaft.

The diameter of the second rotating ring 4 is not smaller than the safe distance between the two wires 7 of the power transmission line, the power transmission line is fixed on the outer wall of the second rotating ring 4, the diameter of the second rotating ring 4 is larger than the safe distance between the two wires 7 of the power transmission line, so that the wires 7 can be separated, and the situation that the wires are contacted or wound when the lines are loose is prevented.

The first rotating ring 3, the second rotating ring 4, the counterweight shaft 1 and the circuit fixing piece 5 are all made of metal materials, and insulating layers are arranged on the first rotating ring 3, the second rotating ring 4, the counterweight shaft 1 and the circuit fixing piece 5; the service life of the anti-vibration shaft can be guaranteed by the aid of the metal material, and the insulating layer is arranged to increase safety performance of the device and reduce maintenance difficulty.

The up-down end face between the first rotating ring 3 and the second rotating ring 4 can be provided with a protective cover (not shown), the steel balls 6 are protected through the protective cover, and foreign matters such as dust and leaves are prevented from entering the protective cover, so that the using effect of the anti-vibration shaft is influenced. The protective cover is movably connected with the first rotating ring 3 and the second rotating ring 4 respectively, when the second rotating ring 4 rotates relative to the first rotating ring 3, the protective cover does not affect the function of the first rotating ring 3, the inner wall of the protective cover is connected with the inner wall of the first rotating ring 3 in a sliding mode, and the outer wall of the protective cover is connected with the outer wall of the second rotating ring 4 in a sliding mode.

The scheme does not specifically limit the movable connection structure of the protective cover and the first rotating ring 3 and the second rotating ring 4, and the protective cover can be of a structure which can not affect the first rotating ring 3 and the second rotating ring 4 as long as the first rotating ring 3 and the second rotating ring 4 rotate, so that the structure is already available in the prior art, and is not repeated herein.

The line fixing member 5 may be a hollow cylindrical structure, and the line fixing member 5 fixes the line conductor 7.

The counterweight shaft 1 is a metal shaft, the diameter of the counterweight shaft 1 is not less than 1/3 of the diameter of the second rotating ring 4, when the device is used, two parallel power transmission lines are respectively fixed with the line fixing piece 5, because the second rotating ring 4 is slightly larger than the distance between the two conducting wires 7, the two conducting wires 7 can be separated to prevent the conducting wires 7 from contacting and winding, because the counterweight shaft 1 is heavy, the counterweight shaft also has a function of falling and tightening the power transmission lines, when the power transmission lines are blown by wind power, the power transmission lines can rotate to a certain degree along the second rotating ring 4 to convert swinging force into torsion, when a plurality of power transmission lines are arranged at intervals, because the wind power is uncertain, the torsion directions between different anti-vibration shafts are not used, the torsion can be offset to a certain degree, and the swinging force of the whole line can be dispersed, thereby greatly reducing the occurrence of 7-step oscillation of the wire.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides an overhead transmission line split conductor antivibration axle which characterized in that: the device comprises a counterweight shaft, a connecting bar, a first rotating ring, a second rotating ring, a line fixing piece and steel balls; the counterweight shaft is arranged at the center of the first rotating ring and is fixedly connected with the first rotating ring through a connecting strip, the second rotating ring is sleeved outside the first rotating ring, the steel balls are arranged between the first rotating ring and the second rotating ring, and the circuit fixing pieces are symmetrically arranged on the outer wall of the second rotating ring.

2. The overhead transmission line split conductor vibration-proof shaft according to claim 1, wherein: the connecting strip is evenly set up along the outer wall of counter weight axle, the one end of connecting strip and the outer wall fixed connection of counter weight axle, the inner wall fixed connection of the other end and first rotating ring, the center collineation of counter weight axle and the center of first rotating ring.

3. The overhead transmission line split conductor vibration-proof shaft according to claim 1 or 2, wherein: the counterweight shaft is a metal shaft, and the diameter of the counterweight shaft is not less than 1/3.

4. The overhead transmission line split conductor vibration-proof shaft according to claim 1 or 2, wherein: the diameter of the second rotating ring is not smaller than the safety distance between the two wires of the power transmission line.

5. The overhead transmission line split conductor vibration-proof shaft according to claim 1 or 2, wherein: the steel balls are fully distributed along the gap between the first rotating ring and the second rotating ring, so that the first rotating ring, the second rotating ring and the steel balls form a large bearing, and the steel balls freely rotate along the gap between the first rotating ring and the second rotating ring.

6. The overhead transmission line split conductor vibration-proof shaft according to claim 1 or 2, wherein: the first rotating ring, the second rotating ring, the counterweight shaft and the circuit fixing piece are all made of metal materials, and insulating layers are arranged on the first rotating ring, the second rotating ring, the counterweight shaft and the circuit fixing piece.

7. The overhead transmission line split conductor vibration-proof shaft according to claim 1 or 2, wherein: and the upper end surface and the lower end surface between the first rotating ring and the second rotating ring are provided with protective covers.

8. The overhead transmission line split conductor vibration-proof shaft according to claim 1 or 2, wherein: the circuit fixing piece is of a hollow cylindrical structure and fixes a circuit lead.