JP2988568B2 - Multi-conductor transmission line interphase spacer mounting device - Google Patents
Multi-conductor transmission line interphase spacer mounting deviceInfo
- Publication number
- JP2988568B2 JP2988568B2 JP6282827A JP28282794A JP2988568B2 JP 2988568 B2 JP2988568 B2 JP 2988568B2 JP 6282827 A JP6282827 A JP 6282827A JP 28282794 A JP28282794 A JP 28282794A JP 2988568 B2 JP2988568 B2 JP 2988568B2
- Authority
- JP
- Japan
- Prior art keywords
- conductor
- clamp
- spacer
- phase
- transmission line
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Suspension Of Electric Lines Or Cables (AREA)
Description
【0001】[0001]
【産業上の利用分野】本発明は多導体送電線に相間スペ
ーサを取り付ける装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for attaching an interphase spacer to a multiconductor power transmission line.
【0002】[0002]
【従来の技術】架空送電線の各相の導体がギャロッピン
グ振動を起こして接触する相間短絡事故を防止するため
に、長尺幹状の碍子またはポリマー碍子製の絶縁杆体の
上下両端に導体把持クランプを設けた相間スペーサを、
上下の各相の導体間に取り付けて各相導体相互の接触を
防いでいるが、多導体送電線の場合は各素導体の個々の
挙動は必ずしも同一ではなく、各素導体が長手方向に移
動するとその各導体把持クランプに無理な応力がかかる
ので、導体の長手方向移動に応動するようにした導体把
持クランプが用いられている。2. Description of the Related Art In order to prevent an interphase short-circuit accident in which conductors of each phase of an overhead power transmission line cause galloping vibration and contact with each other, conductor gripping clamps are provided on upper and lower ends of an insulating rod made of a long trunk-shaped insulator or a polymer insulator. The interphase spacer provided with
Each phase conductor is attached between the upper and lower phase conductors to prevent contact between them.However, in the case of a multi-conductor power transmission line, the individual behavior of each element conductor is not necessarily the same, and each element conductor moves in the longitudinal direction. Then, an excessive stress is applied to each of the conductor holding clamps. Therefore, a conductor holding clamp adapted to respond to the longitudinal movement of the conductor is used.
【0003】たとえば、多導体送電線の上下の各相の素
導体を把持する複数のクランプを導体集束ヨークに取り
付け、この導体集束ヨークを、碍子製の棒状絶縁体の上
下両端に、線路方向のみに可動に取り付けて、各素導体
の長手方向移動に対処するようにした実開昭52−14
9295号の多導体用相間スペーサが公知である。[0003] For example, a plurality of clamps for gripping element conductors of each phase above and below a multiconductor power transmission line are attached to a conductor focusing yoke, and the conductor focusing yokes are attached to both upper and lower ends of a rod insulator made of insulator only in the line direction. 52-14, which is movably attached to the main body to cope with the longitudinal movement of each elementary conductor.
No. 9295 is known a multiconductor interphase spacer.
【0004】また、合成樹脂または磁器等からなる絶縁
スペーサロッドの端部に連結した所定長さのダンパーケ
ーブルまたはダンパーロッドを多導体送電線に取り付け
てギャロッピング振動を抑制するようにした特開昭52
−120393号の架空送電線用相間スペーサが公知で
ある。Further, a damper cable or damper rod having a predetermined length connected to an end of an insulating spacer rod made of synthetic resin or porcelain is attached to a multiconductor power transmission line to suppress galloping vibration.
An inter-phase spacer for overhead power transmission lines of -120393 is known.
【0005】また、同相導体相互の間隔を保つ導体スペ
ーサの両端に、クランプを、電線方向に可動に取り付
け、上下の各相の導体スペーサの重心を棒状絶縁体の両
端にピン連結して導体スペーサを垂直面内に可動に取り
付けて、1相の導体群にギャロッピング振動が起こって
も他相の導体群により干渉を受けてギャロッピング振動
を消滅するようにした実開昭51−121797号の多
導体用相間スペーサが公知である。 [0005] In addition, a conductor space for maintaining the spacing between the in-phase conductors.
Clamps are attached to both ends of the
The center of gravity of the upper and lower conductor spacers on both sides of the rod-shaped insulator.
Connect the pins to the ends and move the conductor spacer movably in the vertical plane.
In addition, galloping vibration occurs in one-phase conductor group
Vibration due to interference by conductors of other phases
Of Japanese Utility Model Application No. 51-121797
Interphase spacers for conductors are known.
【0006】また、二股部の平行片に傾斜面を形成した
クランプ本体の該平行片の間に連結杆の両端の環状部を
挿入しねじピンで枢支して、スペーサ本体である連結杆
の端部が該傾斜面間でガタついて揺動するようにスペー
サを構成し、さらに前記のように構成した連結杆を四角
形主枠の四隅の頂点の取付板の孔内に揺動するように取
り付けた実開昭59−18525号の架空線用スペーサ
が公知である。 Further , an inclined surface is formed on the parallel piece of the forked portion.
Between the parallel pieces of the clamp body,
Insert and pivot with a screw pin, connecting rod
So that the end of the
And the connecting rod configured as above
Swing into the holes in the mounting plate at the vertices of the four corners of the main frame.
Spacer for overhead wire of Japanese Utility Model Publication No. 59-18525
Is known.
【0007】[0007]
【発明が解決しようとする課題】前記実用新案出願公開
の多導体用相間スペーサのように、導体把持クランプを
線路方向のみに可動にした構成では、上側の相または下
側の相における多導体の左右の各素導体の線路方向の移
動が逆位相である場合には、碍子製棒状絶縁体の両端の
各導体集束ヨークに設けた導体把持クランプ間に逆位相
の線路方向応力がかかって相間スペーサに捻回モーメン
トがかかりその棒状絶縁体が破壊するという問題点があ
り、殊にサブスパンギャロッピング時に多発する水平方
向回転運動に追随できないという問題点がある。In a configuration in which the conductor holding clamp is movable only in the line direction, as in the multi-conductor interphase spacer disclosed in the above-mentioned utility model application, the multi-conductor in the upper phase or the lower phase is not provided. When the movement of the left and right element conductors in the line direction is in opposite phase, the opposite phase line direction stress is applied between the conductor gripping clamps provided on each conductor converging yoke at both ends of the insulator rod insulator, and the interphase spacer is applied. However, there is a problem that the rod-shaped insulator is destroyed due to a torsional moment, and in particular, it cannot follow the horizontal rotation movement that occurs frequently during subspan galloping.
【0008】また、前記特許出願公開の架空送電線用相
間スペーサも、上下各相の導体が線路方向に逆位相で動
いた時は絶縁スペーサロッドに捻じれがかかり、特に4
導体の送電線の場合は捻回力が大きくなり絶縁スペーサ
ロッドが損傷しやすいという問題点があり、さらに、ス
リートジャンプ等により絶縁スペーサロッドが弧状に曲
げられた場合、絶縁スペーサロッドが電線に衝突して損
傷したり、ダンパーケーブルまたはダンパーロッドが疲
労して絶縁スペーサロッドが脱落するおそれがあるばか
りでなく、ダンパーケーブルまたはダンパーロッドと絶
縁スペーサロッドとの連結部が複雑なため施工性が悪い
という問題点がある。Also, the interphase spacer for an overhead transmission line disclosed in the above-mentioned patent application is twisted on the insulating spacer rod when the conductors of the upper and lower phases move in opposite phases in the line direction.
In the case of a conductor power line, there is a problem that the twisting force is large and the insulating spacer rod is easily damaged.In addition, if the insulating spacer rod is bent in an arc shape by three jumps, etc., the insulating spacer rod collides with the electric wire. In addition to the risk of damaging the damper cable or the damper cable or the fatigue of the damper rod, the insulating spacer rod may come off, and the connection between the damper cable or damper rod and the insulating spacer rod is complicated, resulting in poor workability. There is a point.
【0009】また、前記実用新案出願公開の多導体用相
間スペーサと架空線用スペーサは、電線方向には可動で
あっても水平面内においては回動することができないの
で、多導体の左右素導体の線路方向移動が逆位相の場合
は相間スペーサに捻回モーメントがかかり破壊するとい
う問題点がある。 Further , the multiconductor phase disclosed in the above-mentioned utility model application is disclosed.
The space spacer and the overhead wire spacer are movable in the wire direction.
Can't rotate in a horizontal plane
When the line direction movement of the left and right conductors of the multiconductor is in opposite phase
Indicates that a torsional moment is applied to the interphase spacer, causing it to break.
There is a problem.
【0010】本出願人はさきに、相間スペーサのポリマ
ー碍子の上下両端に取り付けた各電線クランプの向きが
整合しない場合の相間スペーサが受けるねじれに対処す
るために、ポリマー碍子部と電線クランプの間に回動自
在継手を設け上下両端の電線クランプを相互に回動自在
にして単導体送電線に装着するようにした特開平6−1
13435号の相間スペーサを開発したが、これは、多
導体送電線に取り付けるように構成するには、複数の電
線クランプの支持体と回動自在継手との連結部の構成が
複雑になり、また、上相と下相の導体間隔に適合する長
さの相間スペーサを構成するのに、回動自在継手を設け
る分だけ充電部分の長さが長くなってその分だけポリマ
ー碍子の占める長さが短くなり、上下両端の電線クラン
プ間の間隔に対してポリマー碍子の充分な長さが得られ
ない。In order to cope with the torsion that the interphase spacer receives when the directions of the electric wire clamps attached to the upper and lower ends of the polymer insulator of the interphase spacer do not match, the applicant of the present invention has described the following. Japanese Patent Laid-Open No. Hei 6-1 wherein a rotatable joint is provided on a single conductor transmission line so that the wire clamps at both upper and lower ends are rotatable relative to each other.
No. 13435 has developed an interphase spacer, which requires a complicated configuration of a connecting portion between a support of a plurality of wire clamps and a rotatable joint, in order to mount the spacer on a multiconductor power transmission line. In order to construct an interphase spacer with a length that matches the conductor spacing between the upper and lower phases, the length of the charging portion is increased by the amount of the rotatable joint, and the length of the polymer insulator is increased by that amount. As a result, a sufficient length of the polymer insulator cannot be obtained for the distance between the wire clamps at the upper and lower ends.
【0011】本発明は、前記の問題点を解決し、多導体
送電線の各相の素導体が線路方向に逆位相で動いてもポ
リマー碍子絶縁杆体に捻じれがかからないようにした多
導体送電線の相間スペーサ取付装置を提供することを目
的とするものである。[0011] The present invention solves the above-mentioned problems, and prevents the polymer insulator insulating rod from being twisted even when the elementary conductors of each phase of the multiconductor transmission line move in opposite phases in the line direction. It is an object of the present invention to provide an inter-phase spacer mounting device for electric wires.
【0012】[0012]
【課題を解決するための手段】前記の目的を達成するた
め本発明の多導体送電線の相間スペーサ取付装置は、多
導体送電線の素導体間隔を保持する素導体間スペーサフ
レーム1、2、4、5を相間絶縁スペーサ杆体7の両端
部に設け、前記索導体間スペーサフレームの各端部の水
平面回動連結部30におけるクランプ保持筒部内11に
電線把持クランプ下端部を支持するアイボルト20を連
結ばね21で弾力的に支持することにより、該電線把持
クランプ10を水平面内におい下回動可能に連結し、か
つ、前記アイボルト20の上端部における電線方向回動
連結部40により前記電線把持クランプ10を電線方向
に回動可能に連結したことを特徴とするものである。In order to achieve the above-mentioned object, an inter-spacer mounting apparatus for a multi-conductor power transmission line according to the present invention is provided. 4 and 5 are provided at both ends of the inter-phase insulating spacer rod 7, and the water at each end of the cable conductor spacer frame is provided.
In the inside 11 of the clamp holding cylinder part in the plane rotation connection part 30
Connect eyebolts 20 that support the lower end of the wire gripping clamp.
By being elastically supported by the tie spring 21, the electric wire is held.
The clamp 10 is connected rotatably downward in a horizontal plane,
One, the wire direction rotation at the upper end of the eyebolt 20
The electric wire gripping clamp 10 is moved in the electric wire direction by the connecting portion 40.
And rotatably connected to the main body .
【0013】[0013]
【作用】電線把持クランプ10は多導体送電線の上下の
各相の各素導体を把持し、素導体間スペーサフレーム
1、2、4、5は同相の各素導体間の間隔を該スペーサ
フレームの長さに相当する所定間隔に保持する。相間絶
縁スペーサ杆体7は上側の相の多導体と下側の相の多導
体とを絶縁スペーサ杆体7の長さに相当する所定間隔に
保持して、ギャロッピング振動時の上側の相と下側の相
の導体相互の接触を防ぐ。The electric wire holding clamp 10 grips each element conductor of each phase above and below the multi-conductor transmission line, and the inter-element spacer frames 1, 2, 4, and 5 determine the spacing between each element conductor of the same phase. Is maintained at a predetermined interval corresponding to the length. The inter-phase insulating spacer rod 7 holds the upper phase multiconductor and the lower phase multiconductor at a predetermined interval corresponding to the length of the insulating spacer rod 7 so that the upper phase and the lower phase during galloping vibration are maintained. Prevents phase conductors from contacting each other.
【0014】個々の素導体が線路方向に個々に移動して
も、各電線把持クランプ10は、それぞれ素導体間スペ
ーサフレームに対して電線方向回動連結部40により電
線方向に回動可能に連結されているので、個々に電線方
向に回動して追随することができ、ポリマー碍子の相間
絶縁スペーサ杆体7に無理な応力がかからない。Even if the individual elementary conductors move individually in the line direction, each wire gripping clamp 10 is rotatably connected to the spacer frame between the elementary conductors in the wire direction by the wire direction rotating connecting portion 40. Therefore, it is possible to individually rotate and follow the direction of the electric wire, and no unreasonable stress is applied to the interphase insulating spacer rod 7 of the polymer insulator.
【0015】また、電線把持クランプ10は、水平面回
動連結部30におけるクランプ保持筒部内11において
電線把持クランプ下端部を支持するアイボルト20が連
結ばね21で弾力的に支持されることにより素導体間ス
ペーサフレームに対して水平面内に回動可能に連結され
ているので、各素導体の各々の線路方向移動が逆位相で
相間スペーサに捻回モーメントがかかっても、さらに、
サブスパンギャロッピング時に水平方向回転遅動が起こ
っても、各素導体を把持している個々の電線把持クラン
プ10は、導体間スペーサフレームに対してそれぞれ水
平面内で回動して自由に追随し、かつ連結ばね21の弾
力で弾力的に追随することができ、しかも線路方向の回
動運動に対して連結ばね21の伸縮作用によりクランプ
部に作用する各種の振動応力が緩和されるから、ポリマ
ー碍子の相間絶縁スペーサ杆体7に無理な捻じれ応力が
かからない。The electric wire gripping clamp 10 is a
In the inside 11 of the clamp holding cylinder part in the dynamic connection part 30
An eyebolt 20 supporting the lower end of the wire gripping clamp
The gap between the element conductors is elastically supported by the connection spring 21.
Pivotally connected to the pacer frame in a horizontal plane
Therefore, even if the line movement of each element conductor in the line direction is in opposite phase and a torsional moment is applied to the interphase spacer,
Take place in the horizontal direction rotated lagged when subspan galloping, individual wires gripping clamp 10 which grips the respective element conductors, respectively water to the conductor between the spacer frame
It rotates freely in a plane and follows freely, and the spring of the connecting spring 21
It can follow elastically with force, and turn in the track direction
Clamping due to the expansion and contraction of the connecting spring 21 against dynamic movement
Since various vibration stresses acting on the portion are relieved , no unreasonable torsional stress is applied to the interphase insulating spacer rod 7 of the polymer insulator.
【0016】[0016]
【実施例】以下本発明の多導体送電線の相間スペーサ取
付装置の実施例を図面により説明する。図1および図
3、図4は275KV級の4導体送電線に本発明を適用
した実施例を示し、A1、A2、A3、A4は4導体送
電線の上側にある相の4導体A(符号Aは図3)の各素
導体であり、B1、B2、B3、B4は下側にある相の
4導体B(符号Bは図3)の各素導体である。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of an apparatus for mounting a spacer between phases of a multiconductor power transmission line according to the present invention. FIGS. 1, 3 and 4 show an embodiment in which the present invention is applied to a 275 KV-class four-conductor power transmission line. A1, A2, A3, and A4 denote a four-conductor A (reference numeral) on the upper side of the four-conductor power transmission line. A is each elementary conductor of FIG. 3), and B1, B2, B3, and B4 are each elementary conductor of four conductors B (reference number B is FIG. 3) on the lower side.
【0017】1は上側にある相の4条の素導体A1、A
2、A3、A4のうち上側の2条の導体A1、A2の水
平間隔を所定間隔に保持する上側の素導体間スペーサフ
レームであり、2は下側の2条の導体A3、A4の水平
間隔を所定間隔に保持する下側の素導体間スペーサフレ
ームである。この上側と下側の両素導体間スペーサフレ
ーム1、2は円筒状フランジを用いた上下間隔保持連結
杆3の上下両端に取り付ける。Reference numeral 1 denotes four element conductors A1, A of the upper phase.
2, an upper inter-conductor spacer frame for maintaining a horizontal interval between upper two conductors A1, A2 at a predetermined interval among A3, A4, and 2 is a horizontal interval between lower two conductors A3, A4. Is a lower inter-element-spacer spacer frame that holds a predetermined distance. The upper and lower spacer frames 1 and 2 are attached to the upper and lower ends of a vertically-spaced connecting rod 3 using a cylindrical flange.
【0018】4は下側にある相の素導体B1、B2、B
3、B4のうち上側の2導体B1、B2の水平間隔を所
定間隔に保持する上側の素導体間スペーサフレームであ
り、5は下側の2導体B3、B4の水平間隔を所定間隔
に保持する下側の素導体間スペーサフレームである。こ
の上側と下側の素導体間スペーサフレーム4、5も円筒
状フランジを用いた上下間隔保持連結杆6の上下両端に
取り付ける。4 is a lower phase element conductor B1, B2, B
3 and B4, an upper inter-element spacer frame for maintaining a horizontal interval between upper two conductors B1 and B2 at a predetermined interval, and 5 for maintaining a horizontal interval between lower two conductors B3 and B4 at a predetermined interval. It is a lower inter-conductor spacer frame. The upper and lower inter-element spacer frames 4 and 5 are also attached to the upper and lower ends of a vertically-spaced connecting rod 6 using a cylindrical flange.
【0019】前記の上相の導体Aの上側の素導体間スペ
ーサフレーム1と下側の素導体間スペーサフレーム2、
および下相の導体Bの上側の素導体間スペーサフレーム
4と下側の素導体間スペーサフレーム5は、それぞれ上
相導体Aの上下間隔保持連結杆3の上下両端、および下
相導体Bの上下間隔保持連結杆6の上下両端に同一垂直
面内にあるように取り付けるが、施工性等を向上させる
ためにその取付角度を0゜≦θ≦45゜ の範囲で選定
することができる。The upper inter-conductor spacer frame 1 and the lower inter-conductor spacer frame 2 of the upper phase conductor A,
The upper inter-conductor spacer frame 4 and the lower inter-conductor spacer frame 5 of the lower phase conductor B are connected to the upper and lower ends of the upper and lower spacing conductors 3 of the upper phase conductor A and the upper and lower ends of the lower phase conductor B, respectively. It is attached to the upper and lower ends of the spacing maintaining connecting rod 6 so as to be in the same vertical plane. However, in order to improve workability and the like, the attachment angle can be selected in the range of 0 ° ≦ θ ≦ 45 °.
【0020】前記の上相の導体Aの素導体間スペーサフ
レーム1、2と下相の導体Bの素導体間スペーサフレー
ム4、5は長尺幹状のポリマー碍子からなる相間絶縁ス
ペーサ杆体7の上下両端部に取り付ける。このポリマー
碍子相間絶縁スペーサ杆体7の両端部には、電界を緩和
してポリマー碍子のエロージョンやトラッキングによる
劣化を防止するシールドリング8を取り付ける。9はフ
ランジアダプターで、相間距離が個々に異なる場合に所
定の長さに調節するために取り付けるものであり、前記
の相間絶縁スペーサ杆体7と素導体間スペーサフレーム
4との間に介在させてフレームボルト91で取り付け
る。The spacer frames 1 and 2 of the upper-phase conductor A and the spacer frames 4 and 5 of the lower-phase conductor B are formed of the interphase insulating spacer rod 7 made of a long trunk-like polymer insulator. Attach to both upper and lower ends. At both ends of the polymer insulator interphase insulating spacer rod 7, shield rings 8 are provided to alleviate the electric field and prevent the polymer insulator from being deteriorated by erosion or tracking. Reference numeral 9 denotes a flange adapter, which is attached to adjust the length to a predetermined length when the inter-phase distance is different from each other. The flange adapter 9 is interposed between the inter-phase insulating spacer rod 7 and the inter-conductor spacer frame 4 to form a frame. Attach with bolts 91.
【0021】前記の上相の導体Aの各素導体間スペーサ
フレーム1、2、および下相の導体Bの各素導体間スペ
ーサフレーム4、5の各両端部には、それぞれ各素導体
を把持する電線把持クランプ10を取り付ける。この電
線把持クランプ10は、図2に示したように、各素導体
間スペーサフレーム1、2、4、5の各々の端部に溶接
等により設けた円筒状ケーシング形のクランプ保持筒部
11にクランプ部31の下端部25を回動可能に保持さ
せたものである。このクランプ保持筒部11はその筒体
の下端を開口12し、筒体の上端内周の係止環部13に
中心孔14を設ける。The element conductors are respectively held at both ends of the spacer frames 1 and 2 of the upper-phase conductor A and the spacer frames 4 and 5 of the lower-phase conductor B. The electric wire holding clamp 10 to be mounted is attached. As shown in FIG. 2, the electric wire gripping clamp 10 has a cylindrical casing type clamp holding tube portion 11 provided by welding or the like at each end of each inter-conductor spacer frame 1, 2, 4, 5. The lower end 25 of the clamp portion 31 is rotatably held. The clamp holding cylinder 11 has an opening 12 at the lower end of the cylinder, and a center hole 14 is provided in a locking ring 13 on the inner periphery of the upper end of the cylinder.
【0022】前記のクランプ保持筒部11の内部にはア
イボルト20を回動自在に支持させる。このアイボルト
20は、中間部に鍔部15を有し下半部16の下端部に
ボルト部17を有し上半部18の上端部に横孔19を有
する。このアイボルト20の下半部16を前記のクラン
プ保持筒部11の上端の中心孔14から保持筒11内に
差込み、このクランプ保持筒部11内のアイボルト下半
部16にクランプ保持筒部11の下端開口12から連結
ばね21を嵌挿し、この下端開口12から突出している
アイボルト下端のボルト部17にワッシャ22を嵌め溝
付ナット23を螺合して割りピン24で抜け止めして連
結ばね21の下端を押さえ、クランプ保持筒部11の上
端の係止環部13との間に連結ばね21を締付けること
により、アイボルト下半部16をクランプ保持筒部11
内に弾力的に保持する。このようにクランプ保持筒部1
1内に下半部16が弾力的に保持されたアイボルト20
はクランプ保持筒部11内においてアイボルト軸を垂直
軸心として、電線方向に対して平行な平面内である水平
面内において回動可能である。An eyebolt 20 is rotatably supported inside the clamp holding tube portion 11. The eyebolt 20 has a flange 15 at an intermediate portion, a bolt portion 17 at a lower end of a lower half 16, and a lateral hole 19 at an upper end of an upper half 18. The lower half 16 of the eyebolt 20 is inserted into the holding cylinder 11 from the center hole 14 at the upper end of the clamp holding cylinder 11, and the lower half 16 of the eyebolt in the clamp holding cylinder 11 is inserted into the lower half 16 of the clamp holding cylinder 11. A connecting spring 21 is inserted from the lower end opening 12, a washer 22 is fitted to a bolt portion 17 at the lower end of the eyebolt protruding from the lower end opening 12, a grooved nut 23 is screwed into the bolt portion 17, and the connecting spring 21 is prevented from coming off by a split pin 24. Of the eyebolt lower half 16 by holding down the lower end of the eyebolt and tightening the connecting spring 21 between the locking ring 13 at the upper end of the clamp holding cylinder 11.
Resiliently hold within. Thus, the clamp holding cylinder 1
Eyebolt 20 with lower half 16 elastically held within 1
Is rotatable in a horizontal plane, which is a plane parallel to the electric wire direction, with the eyebolt axis as a vertical axis in the clamp holding tube portion 11.
【0023】前記のアイボルト20の上端部に電線把持
クランプ10のクランプ部31を電線方向に可動になる
ように取り付ける。この取り付けは、前記のアイボルト
20の上半部18の上端に、クランプ部31の下端部2
5の下端に開口する中間溝部26を嵌めてこのクランプ
部下端部25の横孔27とアイボルト上半部18の横孔
19に連結横ボルト28を挿通し、この連結横ボルト2
8に嵌挿した防音ばね32を、クランプ部下端部25の
半部の拡大横孔27内においてボルト頭部とアイボルト
上半部18側面との間に介在させ、連結横ボルト28の
先端に締付ナット29を螺合して割りピン29′で抜け
止めすることにより、アイボルト20の上端にクランプ
部31の下端部25を取り付ける。A clamp portion 31 of the wire gripping clamp 10 is attached to the upper end of the eyebolt 20 so as to be movable in the wire direction. This attachment is performed by attaching the lower end 2 of the clamp 31 to the upper end of the upper half 18 of the eyebolt 20.
5, a connecting horizontal bolt 28 is inserted into a horizontal hole 27 of the lower end 25 of the clamp portion and a horizontal hole 19 of the upper half portion 18 of the eyebolt.
8 is interposed between the head of the bolt and the side of the upper half 18 of the eyebolt in the enlarged lateral hole 27 in the half of the lower end 25 of the clamp part, and fastened to the tip of the connecting lateral bolt 28. The lower end 25 of the clamp portion 31 is attached to the upper end of the eyebolt 20 by screwing the attached nut 29 and stopping it with the split pin 29 ′.
【0024】前記のように、電線把持クランプ10を、
素導体間スペーサフレームの端部のクランプ保持筒部1
1内で連結ばね21により弾力的に支持したアイボルト
20を垂直軸心として電線方向に平行な水平面内におい
て回動可能に連結した連結部の構成は、素導体間スペー
サフレーム1、2、4、5に対する電線把持クランプ1
0の水平面回動連結部30を構成する。このアイボルト
20の鍔部15と下半部16とボルト部17、およびワ
ッシャ22、溝付ナット23、割りピン24等はこの水
平面回動連結部30の細部を構成する。As described above, the wire gripping clamp 10 is
Clamp holding tube part 1 at the end of spacer frame between element conductors
The structure of the connecting part which is rotatably connected in a horizontal plane parallel to the electric wire direction with the eyebolt 20 elastically supported by the connecting spring 21 in the vertical direction as a vertical axis in the spacer frame 1, 2, 4, Wire gripping clamp 1 for 5
The horizontal plane rotation connection part 30 of 0 is comprised. The flange portion 15, lower half portion 16, bolt portion 17, and washer 22, grooved nut 23, split pin 24, and the like of the eyebolt 20 constitute details of the horizontal rotation connecting portion 30.
【0025】また、前記のアイボルト20の上端にクラ
ンプ下端部25が取り付けられたクランプ部31は連結
横ボルト28を水平軸心として垂直面内において回動可
能すなわち電線方向に回動可能であり、このように電線
把持クランプ10を垂直面内において電線方向に回動可
能に連結したアイボルト20の上半部18とクランプ部
下端部25の連結部の構成は、素導体間スペーサフレー
ム1、2、4、5に対する電線把持クランプ10の電線
方向回動連結部40を構成する。アイボルト上半部18
の横孔19、クランプ部下端部25の中間溝部26、横
孔27、連結横ボルト28の締付ナット29、割りピン
29′、防音ばね32等はこの電線方向回動連結部40
の細部を構成する。The clamp 31 having the clamp lower end 25 attached to the upper end of the eyebolt 20 is rotatable in a vertical plane with the connecting lateral bolt 28 as a horizontal axis, that is, rotatable in the electric wire direction. As described above, the connection between the upper half portion 18 of the eyebolt 20 and the lower end portion 25 of the clamp portion, in which the wire gripping clamp 10 is rotatably connected in the wire direction in the vertical plane, is formed by the spacer frames 1, 2, The electric wire gripping clamp 10 with respect to 4 and 5 constitutes the electric wire direction rotating connecting portion 40. Eyebolt upper half 18
The horizontal hole 19, the intermediate groove 26 of the clamp lower end 25, the horizontal hole 27, the tightening nut 29 of the connecting horizontal bolt 28, the split pin 29 ', the soundproof spring 32, etc.
Make up the details.
【0026】前記の電線把持クランプ10のクランプ部
31は、図2に示したように、その上半部33にヒンジ
ピン34で電線押さえ部35を開閉自在に連結し、この
電線押さえ部35の下端部から上半部33にT字ボルト
36を挿通してこのT字ボルト36の先端から締付ばね
41を嵌挿し、T字ボルト先端に平ワッシャ37、カム
38を嵌めリベット39で固定することにより、クラン
プ部31の上半部33内側の電線把持凹部42と電線押
さえ部35内側の電線把持凹部43との間に電線を把持
するように構成する。図2は、電線Cにアーマーロッド
Dを巻付けた外周を前記の電線把持凹部42、43間に
挟んで締め付け把持した状態を示している。As shown in FIG. 2, the clamp portion 31 of the electric wire gripping clamp 10 is connected to an upper half portion 33 of the electric wire holding portion 35 by a hinge pin 34 so as to be openable and closable. A T-bolt 36 is inserted into the upper half 33 from the part, a tightening spring 41 is fitted from the tip of the T-bolt 36, a flat washer 37 and a cam 38 are fitted to the T-bolt tip and fixed with rivets 39. Thereby, the electric wire is gripped between the electric wire gripping concave portion 42 inside the upper half portion 33 of the clamp portion 31 and the electric wire gripping concave portion 43 inside the electric wire pressing portion 35. FIG. 2 shows a state in which the outer periphery around which the armor rod D is wound around the electric wire C is clamped between the electric wire holding concave portions 42 and 43.
【0027】前記のように構成した電線把持クランプ1
0は、図1に示したように、長尺幹状のポリマー碍子相
間絶縁スペーサ杆体7の両端に設けた上相の導体Aの素
導体間スペーサフレーム1、2と下相の導体Bの素導体
間スペーサフレーム4、5の各々の両端部に設けたクラ
ンプ保持筒部11に、前記のように電線方向に対して平
行な水平面内に回動可能に取り付けるとともに、電線方
向に回動可能に連結して、本発明の多導体送電線の相間
スペーサ取付装置を構成する。この相間スペーサの上下
両端部の各素導体間スペーサフレームの電線把持クラン
プ10で、4導体送電線の上側の相の各素導体A1、A
2、A3、A4と、下側の相の各素導体B1、B2、B
3、B4を把持する。図3はこのように4導体送電線の
上側の相の各素導体と下側の相の各素導体間に本発明の
相間スペーサを取り付けた状態を線路方向に対し直角に
見た図で示し、Dは各素導体に巻き付けたプレフォーム
ドアーマーロッドであり、このアーマーロッドDの外周
から各素導体を電線把持クランプ10で把持する。The electric wire gripping clamp 1 configured as described above
Numeral 0 denotes a frame between the upper-phase conductor A and the lower-phase conductor B provided at both ends of the long trunk-shaped polymer insulator interphase insulating spacer rod 7 as shown in FIG. Attached to the clamp holding cylinders 11 provided at both ends of each of the inter-conductor spacer frames 4 and 5 so as to be rotatable in a horizontal plane parallel to the wire direction as described above, and to be rotatable in the wire direction. By coupling, the inter-phase spacer mounting device of the multi-conductor power transmission line of the present invention is configured. Each of the element conductors A1, A of the upper phase of the four-conductor power transmission line is clamped by the electric wire gripping clamps 10 of the element conductor spacer frames at the upper and lower ends of the interphase spacer.
2, A3, A4 and each elementary conductor B1, B2, B of the lower phase
3. Hold B4. FIG. 3 shows a state in which the interphase spacer of the present invention is installed between the element conductors of the upper phase and the element conductors of the lower phase of the four-conductor power transmission line as viewed at right angles to the line direction. , D are preformed armor rods wound around each element conductor, and each element conductor is gripped by the wire gripping clamp 10 from the outer periphery of the armor rod D.
【0028】前記のように多導体送電線に取り付けた本
発明の相間スペーサは、個々の素導体が線路方向に個々
に移動しても、電線把持クランプ10は素導体間スペー
サフレームに対してそれぞれ電線方向回動連結部40に
より個々に電線方向に回動して追随することができる。
また、各素導体の各々の線路方向移動が逆位相で相間ス
ペーサに捻回モーメントがかかっても、さらにサブスパ
ンギャロッピング時に水平方向回転運動が起こっても、
各素導体を把持している個々の電線把持クランプ10は
素導体間スペーサフレームに対してそれぞれ水平面回動
連結部30により水平面内に回動可能に連結されている
ので、ポリマー碍子相間絶縁スペーサ杆体7に捻じれが
かからず、自由に追随することができる。As described above, the interphase spacer according to the present invention mounted on the multiconductor power transmission line is such that the electric wire gripping clamp 10 can be moved with respect to the interelement conductor spacer frame even if each elementary conductor moves individually in the line direction. The wire-direction rotating connection part 40 can individually follow and rotate in the wire direction.
Also, even if each of the element conductors moves in the line direction in opposite phases and a torsional moment is applied to the interphase spacer, or even if a horizontal rotational movement occurs at the time of subspan galloping,
Since the individual electric wire gripping clamps 10 gripping the respective element conductors are rotatably connected to the spacer frame between the element conductors in the horizontal plane by the horizontal plane rotation connecting portions 30, respectively, the polymer insulator interphase insulating spacer rods. 7 can be freely followed without being twisted.
【0029】前記の水平面回動連結部30における連結
ばね21は、電線把持クランプ10が把持している導体
がギャロッピング振動を起こした時に連結ばね21の弾
力で各部が弾力的に追随する。また、線路方向の回動運
動に対して連結ばね21の伸縮作用によりクランプ部に
作用する各種の振動応力が緩和される。 Connection in the horizontal plane rotation connection part 30
The spring 21 is a conductor held by the wire holding clamp 10.
Of the connecting spring 21 when a galloping vibration occurs
Each part elastically follows by force. In addition, rotating movement in the track direction
To the clamp due to the expansion and contraction of the connecting spring 21
Various acting vibration stresses are reduced.
【0030】前記のように相間スペーサを取り付ける素
導体間隔が狭い場合は素導体間スペーサフレーム両端の
電線把持クランプ10の取り付けが容易でないので、図
4の平面図および図5の略図に示したように、相間スペ
ーサの素導体間スペーサフレームを交叉角度θでX字状
に交叉させて4導体送電線に取り付ける。素導体間隔が
充分ある通常の場合はこのように交叉せず水平面内で隣
り合う素導体たとえばA1、A2間に直交させて取り付
ける。As described above, when the spacing between the element conductors to which the inter-phase spacers are attached is narrow, it is not easy to attach the electric wire gripping clamps 10 at both ends of the inter-element spacer frame, and therefore, as shown in the plan view of FIG. 4 and the schematic view of FIG. Then, the inter-element spacer frames of the inter-phase spacer are crossed in an X shape at a crossing angle θ and attached to a four-conductor power transmission line. In a normal case in which the element conductors have a sufficient distance, they are mounted orthogonally between adjacent element conductors, for example, A1 and A2 in a horizontal plane without intersecting in this manner.
【0031】図6に示した実施例は本発明の第2の実施
例であり、図1乃至図3と同一符号は同一部分を示す。
この図6は上側の相の4導体A(図1、図3のA)を把
持する構成部分の相間スペーサの上半部のみを図示しこ
れと対称形の下半部は図示を省略してある。この第2の
実施例は、上相の各素導体A1、A2、A3、A4のう
ち上側の2導体A1、A2を把持する電線把持クランプ
10−1、10−2は上側の素導体間スペーサフレーム
1の両端部にクランプ部31を下向きに取り付け、下側
の2導体A3、A4を把持する電線把持クランプ10−
3、10−4は下側の素導体間スペーサフレーム2の両
端部にクランプ部31を上向きに取り付けることによ
り、上側の素導体間スペーサフレーム1の両端部の電線
把持クランプ10−1、10−2の各クランプ部31−
1、31−2と下側の素導体間スペーサフレーム2の両
端部の電線把持クランプ10−3、10−4の各クラン
プ部31−3、31−4とが4導体の素導体A1、A
2、A3、A4間の中心に向くように取り付けたもので
ある。The embodiment shown in FIG. 6 is a second embodiment of the present invention, and the same reference numerals as those in FIGS. 1 to 3 indicate the same parts.
FIG. 6 shows only the upper half of the interphase spacer of the component holding the four conductors A (A in FIGS. 1 and 3) of the upper phase, and the lower half of the symmetrical shape is not shown. is there. In the second embodiment, the electric wire gripping clamps 10-1 and 10-2 for gripping the upper two conductors A1 and A2 of the upper phase element conductors A1, A2, A3 and A4 are formed by the upper element conductor spacers. An electric wire gripping clamp 10-that attaches the clamp portion 31 downward to both ends of the frame 1 and grips the lower two conductors A3 and A4.
3 and 10-4, wire clamps 10-1 and 10- at both ends of the upper inter-conductor spacer frame 1 by attaching the clamp portions 31 upward to both ends of the lower inter-conductor spacer frame 2. 2 each clamp part 31-
1 and 31-2 and each of the clamp portions 31-3 and 31-4 of the wire gripping clamps 10-3 and 10-4 at both ends of the lower inter-conductor spacer frame 2 have four conductors A1 and A, respectively.
It is attached so as to face the center between 2, A3 and A4.
【0032】前記の各電線把持クランプ10−1、10
−2、10−3、10−4は、前記の図2に示した構成
と同構成の水平面回動連結部30により、素導体間スペ
ーサフレームに対して電線把持クランプ10を電線方向
に対して平行な水平面内において回動可能に連結し、ま
た、図2に示した構成と同構成の電線方向回動連結部4
0により、電線方向に回動可能に連結する。図示を省略
した相間スペーサの下半部の下側の相導体B(図1、図
3のB)を把持する各電線把持クランプについても前記
と同様に構成する。Each of the electric wire gripping clamps 10-1 and 10-1
2, 10-3, and 10-4, the wire gripping clamp 10 is moved in the wire direction with respect to the spacer frame between the element conductors by the horizontal rotating connection portion 30 having the same structure as that shown in FIG. A wire-direction rotating connecting portion 4 rotatably connected in a parallel horizontal plane and having the same configuration as that shown in FIG.
By 0, it connects so that rotation is possible in the direction of an electric wire. Each wire gripping clamp for gripping the lower phase conductor B (B in FIGS. 1 and 3) of the lower half of the interphase spacer (not shown) is configured in the same manner as described above.
【0033】前記のように上側の素導体間スペーサフレ
ーム1と下側の素導体間スペーサフレーム2に各電線把
持クランプ10を取り付けた第2の実施例においては、
相間短絡事故が起こった場合に鎖線で示した求心方向の
圧縮荷重Pが働くことによる衝撃力に対して、各電線把
持クランプ10−1、10−2、10−3、10−4は
引張り方向の均等な荷重を受けることになり、図1に示
した配置のように不均等な荷重を受けないから、クラン
プの設計が簡易化できる。なお、この図6に示した実施
例は4導体送電線の場合を示したが、これに限らず6導
体等他の多導体送電線にも適用することができる。In the second embodiment in which the electric wire gripping clamps 10 are attached to the upper inter-element spacer frame 1 and the lower inter-element spacer frame 2 as described above,
In the event of an interphase short-circuit accident, the wire gripping clamps 10-1, 10-2, 10-3, and 10-4 pull in the tensile direction against the impact force caused by the application of the compressive load P in the centripetal direction indicated by the chain line. , And an uneven load is not received unlike the arrangement shown in FIG. 1, so that the clamp design can be simplified. Although the embodiment shown in FIG. 6 shows the case of a four-conductor power transmission line, the present invention is not limited to this and can be applied to other multi-conductor power lines such as a six-conductor power line.
【0034】前記の各実施例は本発明の相間スペーサ取
付装置を4導体送電線に適用した実施例であるが、本発
明の多導体送電線の相間スペーサ取付装置は前記の4導
体送電線に限るものではなく他の多導体送電線にも適用
できるものである。Each of the above embodiments is an embodiment in which the interphase spacer mounting device of the present invention is applied to a four-conductor power transmission line. The multiphase power transmission line interphase spacer mounting device of the present invention is applied to the four-conductor power transmission line. The present invention is not limited to this, and can be applied to other multiconductor transmission lines.
【0035】[0035]
【発明の効果】前記のように本発明の多導体送電線の相
間スペーサ取付装置は、素導体間スペーサフレームの端
部に電線把持クランプを電線方向に回動可能に連結する
とともに、水平面内において回動可能に連結し、さらに
水平面回動連結部におけるクランプ保持筒部内において
電線把持クランプ下端部を支持するアイボルトを連結ば
ねで弾力的に支持したので、電線把持クランプは、個々
の素導体の線路方向移動に対して回動追随することがで
き、また、各素導体の線路方向移動が逆位相で相間スペ
ーサに捻回モーメントがかかっても自由に追随すること
ができ、かつ連結ばねの弾力で弾力的に追随することが
でき、しかも線路方向の回動運動に対して連結ばねの伸
縮作用によりクランプ部に作用する各種の振動応力が緩
和されるから、相間絶縁スペーサ杆体に無理な捻じれ応
力がかからない。As described above, the inter-phase spacer mounting apparatus for a multi-conductor power transmission line according to the present invention connects a wire holding clamp to the end of the inter-conductor spacer frame so as to be rotatable in the direction of the wire, and in a horizontal plane. Pivotably connected , and
In the clamp holding cylinder at the horizontal plane rotation connection
If you connect the eyebolt that supports the lower end of the wire gripping clamp,
Because of the elastic support of the wire, the wire gripping clamp can follow the line movement of each element conductor in the line direction, and the line movement of each element conductor is twisted by the interphase spacer in the opposite phase. It can follow freely even when a turning moment is applied , and it can follow elastically with the elasticity of the connecting spring.
And the extension of the connecting spring against the rotational movement in the track direction.
Various vibration stresses acting on the clamp due to compression
Therefore, unreasonable torsional stress is not applied to the interphase insulating spacer rod.
【図1】本発明の1実施例の装着状態を線路方向に見た
図FIG. 1 is a view of a mounting state of one embodiment of the present invention as viewed in a line direction.
【図2】本発明の1実施例の電線把持クランプを示す図FIG. 2 is a view showing an electric wire gripping clamp according to one embodiment of the present invention.
【図3】本発明の1実施例の装着状態を線路に対し直角
方向に見た図FIG. 3 is a diagram showing a mounting state of one embodiment of the present invention as viewed in a direction perpendicular to a track.
【図4】本発明の1実施例の装着状態の1例の平面図FIG. 4 is a plan view of an example of a mounted state according to an embodiment of the present invention.
【図5】本発明の1実施例の装着状態の1例の略示図FIG. 5 is a schematic view of an example of a mounted state according to an embodiment of the present invention.
【図6】本発明の第2の実施例を示す図FIG. 6 is a diagram showing a second embodiment of the present invention.
1、2、4、5:素導体間スペーサフレーム 7:相間絶縁スペーサ杆体 10:電線把持クランプ20:アイボルト 21:連結ばね 30:水平面回動連結部 31:クランプ部 40:電線方向回動連結部 A1、A2、A3、A4、B1、B2、B3、B4:素
導体1, 2, 4, 5: Spacer frame between elementary conductors 7: Interphase insulating spacer rod 10: Electric wire gripping clamp 20: Eye bolt 21: Connection spring 30: Horizontal plane rotation connection part 31: Clamp part 40: Electric wire direction rotation connection part A1, A2, A3, A4, B1, B2, B3, B4: elementary conductor
フロントページの続き (72)発明者 宗像 武男 東京都千代田区丸の内2丁目6番1号 古河電気工業株式会社内 (72)発明者 福田 望 東京都千代田区丸の内2丁目6番1号 古河電気工業株式会社内 (56)参考文献 実開 昭51−121797(JP,U) 実開 平6−44331(JP,U) 実開 昭59−18525(JP,U) 実開 昭58−100427(JP,U) 特公 昭45−7899(JP,B1) 実公 昭41−20690(JP,Y1) 実公 昭43−29898(JP,Y1) 実公 昭42−4276(JP,Y1) (58)調査した分野(Int.Cl.6,DB名) H02G 7/00 - 7/22 Continued on the front page (72) Inventor Takeo Munakata 2-6-1 Marunouchi, Chiyoda-ku, Tokyo Inside Furukawa Electric Co., Ltd. (72) Inventor Nozomi Fukuda 2-6-1 Marunouchi, Chiyoda-ku, Tokyo Furukawa Electric Co., Ltd. In-house (56) References JP-A 51-121797 (JP, U) JP-A 6-44331 (JP, U) JP-A 59-18525 (JP, U) JP-A 58-100427 (JP, U) ) Tokiko Sho 45-7899 (JP, B1) Tokuji Sho 41-20690 (JP, Y1) Tokuji Sho 43-29898 (JP, Y1) Tokuji Sho 42-4276 (JP, Y1) (58) Field (Int.Cl. 6 , DB name) H02G 7/00-7/22
Claims (1)
体間スペーサフレームを相間絶縁スペーサ杆体の両端部
に設け、前記素導体間スペーサフレームの各端部の水平
面回動連結部におけるクランプ保持筒部内に、電線把持
クランプ下端部を支持するアイボルトを、連結ばねで弾
力的に支持することにより、該電線把持クランプを水平
面内において回動可能に連結し、かつ、前記アイボルト
の上端部における電線方向回動連結部により前記電線把
持クランブを電線方向に回動可能に連結したことを特徴
とする多導体送電線の相間スペーサ取付装置。1. A provided containing between conductors spacer frame to hold the element conductor spacing of the multi-conductor transmission line at both ends of the interphase insulating spacer rods, horizontal at each end of the element conductor between the spacer frame
An electric wire is gripped inside the clamp holding tube at the surface rotation connection.
Press the eyebolt supporting the lower end of the clamp
By forcefully supporting the wire grip clamp
The eyebolt is connected rotatably in a plane, and
The wire grip at the upper end of the wire
An inter- phase spacer mounting device for a multi-conductor power transmission line, characterized in that a holding clamp is rotatably connected in the direction of the electric wire .
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6282827A JP2988568B2 (en) | 1994-10-22 | 1994-10-22 | Multi-conductor transmission line interphase spacer mounting device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6282827A JP2988568B2 (en) | 1994-10-22 | 1994-10-22 | Multi-conductor transmission line interphase spacer mounting device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH08126179A JPH08126179A (en) | 1996-05-17 |
JP2988568B2 true JP2988568B2 (en) | 1999-12-13 |
Family
ID=17657599
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6282827A Expired - Fee Related JP2988568B2 (en) | 1994-10-22 | 1994-10-22 | Multi-conductor transmission line interphase spacer mounting device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2988568B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101817710B1 (en) * | 2017-07-14 | 2018-01-11 | (주)신호엔지니어링 | Device for bufferring vibration of a power cable |
KR101817711B1 (en) * | 2017-07-14 | 2018-01-11 | (주)일광종합기술단 | Spacer damper for transmission line |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008067515A (en) * | 2006-09-07 | 2008-03-21 | Asahi Electric Works Ltd | Spacer for electric wire, and electric wire overhead wiring structure |
CN114678823B (en) * | 2022-03-07 | 2024-04-16 | 国网河北省电力有限公司平山县供电分公司 | Spacer safety installation device |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51121797U (en) * | 1975-03-26 | 1976-10-02 | ||
JPS5918525U (en) * | 1982-07-22 | 1984-02-04 | 古河電気工業株式会社 | Overhead line spacer |
JP2535312Y2 (en) * | 1992-11-07 | 1997-05-14 | 古河電気工業株式会社 | Interphase spacer for offset transmission line |
-
1994
- 1994-10-22 JP JP6282827A patent/JP2988568B2/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101817710B1 (en) * | 2017-07-14 | 2018-01-11 | (주)신호엔지니어링 | Device for bufferring vibration of a power cable |
KR101817711B1 (en) * | 2017-07-14 | 2018-01-11 | (주)일광종합기술단 | Spacer damper for transmission line |
Also Published As
Publication number | Publication date |
---|---|
JPH08126179A (en) | 1996-05-17 |
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