JP2022109820A - Coupling metal fitting for prefabricated camless method and wire extending and wire tightening method using the same - Google Patents

Coupling metal fitting for prefabricated camless method and wire extending and wire tightening method using the same Download PDF

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JP2022109820A
JP2022109820A JP2021005376A JP2021005376A JP2022109820A JP 2022109820 A JP2022109820 A JP 2022109820A JP 2021005376 A JP2021005376 A JP 2021005376A JP 2021005376 A JP2021005376 A JP 2021005376A JP 2022109820 A JP2022109820 A JP 2022109820A
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fitting
kamares
wire
camares
tool
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良治 松下
Ryoji Matsushita
剛 境田
Tsuyoshi Sakaida
政広 船間
Masahiro Funama
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Nippon Katan Co Ltd
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Nippon Katan Co Ltd
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Abstract

To provide a coupling metal fitting for a prefabricated camless method that can reduce a stress applied during extension and tightening of a power transmission wire, can be repeatedly used, and leads to an improvement in workability, and a wire extending and wire tightening method using the same.SOLUTION: A coupling metal fitting for a prefabricated camless method is composed of a camless metal fitting, a tool for wire extension, and a tool for wire tightening. The camless metal fitting is composed of two or three camless metal fittings including a first camless metal fitting and a second camless metal fitting coupled to each other. The first camless metal fitting is coupled to an end of a compression clamp at one end in a longitudinal direction via a first coupling shaft. The second camless metal fitting is coupled to the tool for wire extension at the other end in the longitudinal direction via a third coupling shaft. The tool for wire extension is coupled to an end of a wire connector at the other end in the longitudinal direction via a fourth coupling shaft. The tool for wire tightening is coupled to the first camless metal fitting via a tool for wire tightening attachment part.SELECTED DRAWING: Figure 1

Description

本発明は、プレハブカマレス工法用連結金具並びにこれを用いた延線及び緊線工法に係り、より詳しくは、プレハブカマレス工法用連結金具の部品点数低減及び軽量化により、送電線の延線及び緊線時にプレハブカマレス工法用連結金具にかかる曲げ応力を低減し、変形等を防止することで繰り返し使用可能であり、且つ延線及び緊線の作業性向上及び作業時間短縮ができるプレハブカマレス工法用連結金具並びにこれを用いた延線及び緊線工法に関する。 TECHNICAL FIELD The present invention relates to a connecting fitting for prefabricated Kamares construction method and a wire drawing and wire winding method using the same. And a prefabricated sickle that can be used repeatedly by reducing the bending stress applied to the connecting fittings for the prefabricated kamaless construction method during tightening, preventing deformation, etc., and improving the workability of drawing and tightening and shortening the work time. The present invention relates to a connection fitting for a less construction method and a wire drawing and wire winding construction method using the same.

本明細書において、「延線」とは、送電線鉄塔(以下、鉄塔という)間の2kmから4kmの区間を1延線区間とし、送電線を鉄塔に取り付けた金車を経由させてウインチで引き延ばして架線をおこなう作業であり、「緊線」とは、延線した送電線をあらかじめ設計で決められた送電線の弛み(弛度)に調整するための作業である。 In this specification, the term “extended line” refers to a section of 2 km to 4 km between transmission line towers (hereinafter referred to as towers) as one extended line section, and the transmission line is passed through a pulley attached to the tower with a winch. It is work to stretch and wire, and "tightening" is work to adjust the slack (slackness) of the transmission line determined in advance by design.

図9は、従来のプレハブカマレス工法による送電線の延線作業を示す説明図である。
地上において、送電線(L)の端部は、圧縮型引留クランプ(31)に圧入され、当該圧縮型引留クランプ(31)の送電線(L)の取付側の端部と、反対側の端部には、カムアロングレス金具(以下、カマレス金具(32)という)が設けられている。
FIG. 9 is an explanatory diagram showing a transmission line extension work by the conventional prefabricated Kamares construction method.
On the ground, the end of the transmission line (L) is press-fitted into the compression type detent clamp (31), and the end of the compression type detent clamp (31) on the installation side of the transmission line (L) and the end on the opposite side. The part is provided with a cam-alongless fitting (hereinafter referred to as a camares fitting (32)).

カマレス金具(32)の一端には、フォーク状の部材(以下、クレビス部ともいう)(32a)が設けられ、圧縮型引留クランプ(31)のアイ部(31a)に回動自在に連結されている。
カマレス金具(32)の他端にはアイ部(32b)が設けられ、延線用のワイヤ(W)のワイヤコネクタ(33)に回動自在に連結されている。そして、クレビス部(32a)及びアイ部(32c)の中間には、送電線(L)を鉄塔に緊線する際の緊線用金具を取付けるための取付孔(32c′)を有する取付部(32c)が形成されている。
A fork-shaped member (hereinafter also referred to as a clevis portion) (32a) is provided at one end of the camares fitting (32), and is rotatably connected to the eye portion (31a) of the compression type anchor clamp (31). there is
An eye portion (32b) is provided at the other end of the camares metal fitting (32), and is rotatably connected to a wire connector (33) for a wire (W) for wire drawing. Between the clevis portion (32a) and the eye portion (32c), a mounting portion ( 32c) are formed.

従来のプレハブカマレス工法において、カマレス金具(32)は、緊線の際にがいし装置を介して鉄塔に取付けられて最終的にがいし装置の構成部材となるだけでなく、図9に示されるように、送電線(L)が延線用ワイヤで牽引される際、延線用金車(K1)を通過するときに作用するこじれに対して十分に耐えることができるように高強度の素材から作られている。 In the conventional prefabricated Kamares construction method, the Kamares metal fittings (32) are not only attached to the steel tower through an insulator device at the time of wire tightening and eventually become a constituent member of the insulator device, but also as shown in FIG. In addition, when the power transmission line (L) is pulled by the wire for drawing, it is made of a high-strength material so that it can sufficiently withstand the twisting that acts when it passes through the pulley for drawing (K1). is made.

送電線(L)が延線用金車(K1)上を移動する際には、押し圧力が送電線(L)に加わるが、送電線(L)が撚り線であるため、送電線(L)進行方向に対して撚り線の素線の向きが異なるために素線がホイール面でこじられて移動する。この現象により、延線抵抗が発生すると共に素線にわずかに伸びを生じる。また、電線重量と延線張力により送電線(L)がホイール面に押し付けられてニッキング(素線表面に傷が付く)を発生させる。ニッキング量は、延線用金車(K1)通過回数が多いほど、金車上での押し圧力が大きいほど大きくなる。この押し圧力は電線張力に比例し、延線用金車(K1)径に反比例する。さらに、延線用金車(K1)通過時に送電線(L)が回転する現象も発生する。これらの物理的現象から、送電線(L)は素線の移動で伸びが発生し、また回転による撚り戻り又は撚り締まり現象でも伸びが発生し、更にニッキングでも伸びが出て、いわゆる永久伸びが発生する。 When the transmission line (L) moves on the wire rolling pulley (K1), a pressing force is applied to the transmission line (L). ) Since the orientation of the strands of the stranded wire is different from the traveling direction, the strands are twisted on the wheel surface and move. Due to this phenomenon, wire drawing resistance is generated and the wire is slightly elongated. In addition, the power transmission line (L) is pressed against the wheel surface due to the weight of the electric wire and the drawing tension, which causes nicking (damage to the wire surface). The amount of nicking increases as the wire drawing wheel (K1) passes more times and as the pressing force on the wheel increases. This pressing force is proportional to the wire tension and inversely proportional to the diameter of the wire drawing wheel (K1). Furthermore, there also occurs a phenomenon in which the transmission line (L) rotates when it passes through the wire drawing wheel (K1). From these physical phenomena, the transmission line (L) elongates due to the movement of the wires, and also elongates due to untwisting or twist tightening due to rotation, and further elongates due to nicking. Occur.

特許文献1には、延線作業や緊線作業の際に付与される引張力による変形に対処するために、複数の揺動ブロック体(カマレス金具)と、この揺動ブロック体(カマレス金具)を枢結する複数本の枢結軸とを備え、その一端部が送電線側に枢結されると共に、その他端部が延線ワイヤ側に枢結されるカマレス金具が開示されている。
この特許文献1のカマレス金具の場合、中間の揺動ブロック体(カマレス金具)が、緊線用工具が取付けられる工具取付部と、この工具取付部の端部に連設されるアイ部とを有すると共に、上記送電線側に枢結される揺動ブロック体(カマレス金具)が、上記揺動ブロック体(カマレス金具)のアイ部に枢結されるクレビス部を有している。
このため、延線作業中に、中間の揺動ブロック体(カマレス金具)に引張力が作用すると、この引張力の作用点から上記クレビス部までの距離が比較的短くなるという効果を奏し、延線作業や緊線作業の際に付与される引張力によるアイ部やクレビス部の変形を防止できる。しかし、このアプローチでは、部品点数が多くなるという欠点がある。
Patent Document 1 discloses a plurality of rocking block bodies (kamares metal fittings) and the rocking block bodies (kamares metal fittings) in order to deal with deformation due to tensile force applied during wire drawing work and wire tightening work. , one end of which is pivotally connected to the transmission line side and the other end of which is pivotally connected to the extension wire side.
In the case of the Kamares fitting of Patent Document 1, an intermediate rocking block body (Kamares fitting) has a tool attachment portion to which a wire tightening tool is attached and an eye portion that is connected to the end of the tool attachment portion. A rocking block (camares metal fitting) pivotally connected to the power transmission line side has a clevis portion that is pivotally connected to an eye portion of the rocking block (camares metal fitting).
Therefore, when a tensile force acts on the intermediate rocking block body (camares metal fitting) during wire drawing work, the distance from the point of action of this tensile force to the clevis portion becomes relatively short. It is possible to prevent deformation of the eye portion and clevis portion due to the tensile force applied during wire work and wire tightening work. However, this approach has the drawback of increasing the parts count.

特許文献2には、延線された送電線を緊線する緊線工法、およびその緊線工法に用いる連結金具や連結金具を含む連結金具ユニットが開示されている。
特許文献2では、短尺クランプにカマレス金具3個を連結させて使用しているが、延線及び緊線時には、金車の通過や送電線の動揺や回転等が原因でカマレス金具に大きな曲げ荷重が加わるため、架線金具の中でも当該カマレス金具は、例えば、ニッケルクロム鋼等の最高強度で高価な特殊材料を用いる必要があり、尚且つ作業時の張力や金車抱き角を制限せざるを得なかった。
また、電線張替工事の際には、延線用金車に比べて直径の小さな吊金車をスムーズに通過させるためにカマレス金具の段差発生箇所にパットを取り付ける必要があった。
さらに、緊線用工具(平行クレビスリンク)については、カマレス金具の緊線用工具取付用直角クレビスリンクや直角リンクに取付け部が密着するように精密に製作しても、緊線時に加わる曲げ荷重が大きく、部分的な接触が起こり接触部分に応力が集中するため、カマレス金具の変形や破損、表面のメッキ剥離等が発生するという問題点があった。
Patent Literature 2 discloses a winding method for winding a stretched power transmission line, a connecting fitting used in the winding method, and a connecting fitting unit including the connecting fitting.
In Patent Document 2, three kamares metal fittings are connected to a short clamp and used, but during wire drawing and tightening, a large bending load is applied to the kamares metal fittings due to the passing of the pulley and the vibration and rotation of the transmission line. Therefore, it is necessary to use expensive special materials such as nickel chromium steel, etc. for the Kamares metal fittings among the overhead wire metal fittings. I didn't.
In addition, during wire re-stretching work, it was necessary to attach a pad to the stepped portion of the Kamares metal fittings in order to allow the suspension wheel, which has a smaller diameter than the wire puller, to pass through smoothly.
Furthermore, even if the tightening tool (parallel clevis link) is manufactured precisely so that the mounting part is in close contact with the right angle clevis link for mounting the tightening tool of the Kamares bracket or the right angle link, the bending load applied during tightening will not be sufficient. There was a problem that deformation or breakage of the Kamares metal fitting, peeling of the plating on the surface, etc. occurred because the stress was concentrated on the contact part due to the large contact.

特開2003-169412号公報JP 2003-169412 A 特開2012-125093号公報JP 2012-125093 A

本発明は、叙上の従来技術の問題点を解決すべく、プレハブカマレス工法用連結金具の部品点数低減及び軽量化をおこなった。この発明により、送電線の延線及び緊線時にプレハブカマレス工法用連結金具にかかる曲げ応力を低減し、変形等を防止することでカマレス金具の繰り返し使用が可能となり、且つ延線及び緊線の作業性向上及び作業時間短縮ができるプレハブカマレス工法用連結金具並びにこれを用いた延線及び緊線工法を提供することを目的とする。 In order to solve the above-mentioned problems of the prior art, the present invention reduces the number of parts and the weight of the connecting fittings for the prefabricated Kamares construction method. According to the present invention, the bending stress applied to the prefabricated Kamares method connecting fittings during the drawing and tightening of the power transmission line is reduced, and deformation, etc. is prevented, so that the Kamares fittings can be repeatedly used, and the drawing and tightening are possible. The purpose of the present invention is to provide a connecting fitting for a prefabricated kamares construction method capable of improving workability and shortening the working time, and a wire drawing and wire winding method using the same.

請求項1に係る発明は、鉄塔間に架設される送電線の延線及び緊線に使用するためのプレハブカマレス工法用連結金具であって、
前記プレハブカマレス工法用連結金具は、カマレス金具、延線用工具、及び緊線用工具からなり、
前記カマレス金具は、連結軸を介して互いに長手方向の端部が回動自在に連結された第1カマレス金具及び第2カマレス金具を含む2個又は3個のカマレス金具からなり、
前記第1カマレス金具は、長手方向のもう一方の端部が圧縮クランプの端部に第1連結軸を介して回動自在に連結され、
前記第2カマレス金具は、長手方向のもう一方の端部が第3連結軸を介して延線用工具に回動自在に連結され、
前記延線用工具は、長手方向のもう一方の端部がワイヤコネクタの端部に第4連結軸を介して回動自在に連結され、
前記緊線用工具は、前記第1カマレス金具に緊線用工具取付部を介して回動自在に連結されることを特徴とするプレハブカマレス工法用連結金具に関する。
The invention according to claim 1 is a connecting fitting for a prefabricated Kamares construction method for use in extending and tightening wires of a transmission line constructed between steel towers,
The connection fitting for the prefabricated Kamares construction method comprises a Kamares fitting, a wire drawing tool, and a wire tightening tool,
The camares metal fitting comprises two or three camares metal fittings including a first camares metal fitting and a second camares metal fitting whose ends in the longitudinal direction are rotatably connected to each other via a connecting shaft,
the other end of the first camares fitting in the longitudinal direction is rotatably connected to the end of the compression clamp via a first connecting shaft;
The second camares fitting is rotatably connected to the wire drawing tool via a third connecting shaft at the other end in the longitudinal direction,
The wire drawing tool has the other end in the longitudinal direction rotatably connected to the end of the wire connector via a fourth connecting shaft,
It relates to a connecting fitting for a prefabricated kamares construction method, characterized in that the winding tool is rotatably connected to the first kamares fitting via a winding tool mounting portion.

請求項2に係る発明は、前記第1カマレス金具又は前記第2カマレス金具のクレビス部又はアイ部が吊金車と接する面に対し垂直方向の幅D1と、前記第2カマレス金具又は前記延線用工具のクレビス部又はアイ部が吊金車との接する面に対し垂直方向の幅D2が略同等であり、前記吊金車が通過する前記第2カマレス金具と前記延線用工具の第3連結軸を介した連結部位の溝幅D3と前記吊金車の直径D4の関係がD3<D4であることを特徴とする、請求項1に記載のプレハブカマレス工法用連結金具に関する。 In the invention according to claim 2, the clevis portion or the eye portion of the first camares metal fitting or the second camares metal fitting has a width D1 in a direction perpendicular to a plane in contact with the hanging wheel, and The width D2 in the direction perpendicular to the surface where the clevis portion or eye portion of the tool contacts the hanging wheel is substantially the same, and the second camares fitting through which the hanging wheel passes and the third joint of the wire drawing tool. 2. The connecting fitting for prefabricated camares construction method according to claim 1, characterized in that the relationship between the groove width D3 of the connecting portion via the connecting shaft and the diameter D4 of the hanging wheel is D3<D4.

請求項3に係る発明は、鉄塔間に架設される送電線の延線及び緊線に使用するためのプレハブカマレス工法用連結金具であって、
前記プレハブカマレス工法用連結金具は、カマレス金具、延線用工具、及び緊線用工具からなり、
前記カマレス金具は、長手方向の一端部が圧縮クランプの端部に第1連結軸を介して回動自在に連結され、長手方向のもう一方の端部が第2連結軸を介して前記延線用工具と回動自在に連結され、
前記延線用工具は、長手方向のもう一方の端部が、もうひとつの延線用工具と第3連結軸を介して回動自在に連結され、
前記もうひとつの延線用工具は、長手方向のもう一方の端部がワイヤコネクタの端部に第4連結軸を介して回動自在に連結され、
前記緊線用工具は、前記カマレス金具に緊線用工具取付部の取付孔を介して回動自在に連結されることを特徴とするプレハブカマレス工法用連結金具に関する。
The invention according to claim 3 is a connecting fitting for a prefabricated Kamares construction method for use in extending and tightening wires of a transmission line constructed between steel towers,
The connection fitting for the prefabricated Kamares construction method comprises a Kamares fitting, a wire drawing tool, and a wire tightening tool,
One longitudinal end of the camares metal fitting is rotatably connected to an end of the compression clamp via a first connecting shaft, and the other longitudinal end is connected to the extension wire via a second connecting shaft. is rotatably connected to the tool for
The wire drawing tool is rotatably connected at the other end in the longitudinal direction to another wire drawing tool via a third connecting shaft,
The other wire drawing tool is rotatably connected at the other end in the longitudinal direction to the end of the wire connector via a fourth connecting shaft,
It relates to a connecting fitting for a prefabricated kamares construction method, wherein the wrenching tool is rotatably coupled to the kamares fitting through a mounting hole of a wrenching tool mounting portion.

請求項4に係る発明は、前記カマレス金具又は前記延線用工具のクレビス部又はアイ部が吊金車と接する面に対し垂直方向の幅D1と、隣接する前記延線用工具同士のクレビス部又はアイ部が吊金車と接する面に対し垂直方向の幅D2が略同等であり、前記吊金車が通過する前記延線用工具とワイヤコネクタの第4連結軸を介した連結部位の溝幅D3と前記吊金車の直径D4の関係がD3<D4であることを特徴とする、請求項3に記載のプレハブカマレス工法用連結金具に関する。 The invention according to claim 4 is characterized in that the clevis portion or eye portion of the camares fitting or the wire drawing tool has a width D1 in the direction perpendicular to the plane in contact with the hanging wheel, and the clevis portions of the adjacent wire drawing tools. Alternatively, the width D2 of the eye portion in the direction perpendicular to the surface in contact with the hanging wheel is substantially the same, and the groove at the connecting portion of the wire drawing tool through which the hanging wheel passes and the wire connector via the fourth connecting shaft 4. The connection fitting for prefabricated camares construction method according to claim 3, characterized in that the relationship between the width D3 and the diameter D4 of the hanger wheel is D3<D4.

請求項5に係る発明は、前記カマレス金具は、直角クレビス、直角クレビスリンク、角度クレビス、角度クレビスリンク、直角リンク、及び角度リンクからなる群から選択される請求項1乃至4のいずれか1項に記載のプレハブカマレス工法用連結金具に関する。 The invention according to Claim 5 is any one of Claims 1 to 4, wherein the camares fitting is selected from the group consisting of a right-angle clevis, a right-angle clevis link, an angle clevis, an angle clevis link, a right-angle link, and an angle link. 2. It is related with the connection metal fittings for prefabricated camares construction methods as described in 1.

請求項6に係る発明は、前記プレハブカマレス工法用連結金具を用いて、鉄塔間に送電線を延線及び緊線する工法であって、前記プレハブカマレス工法用連結金具の一部である前記延線用工具は、延線作業時に使用し、緊線作業前に取り外すことが可能である、鉄塔間に送電線を延線及び緊線する工法に関する。 The invention according to claim 6 is a construction method for extending and tightening a transmission line between steel towers using the connecting fitting for the prefabricated Kamares method, which is a part of the connecting fitting for the prefabricated Kamares method. The wire drawing tool relates to a construction method for drawing and tightening a transmission line between steel towers, which is used during wire drawing work and can be removed before wire tightening work.

請求項1に係る発明によれば、プレハブカマレス工法用連結金具は、カマレス金具、延線用工具、及び緊線用工具からなり、前記カマレス金具は、連結軸を介して互いに長手方向の端部が回動自在に連結された第1カマレス金具及び第2カマレス金具を含む2個又は3個のカマレス金具からなり、前記第1カマレス金具は、長手方向のもう一方の端部が圧縮クランプの端部に第1連結軸を介して回動自在に連結され、前記第2カマレス金具は、長手方向のもう一方の端部が第3連結軸を介して前記延線用工具に回動自在に連結され、前記延線用工具は、長手方向のもう一方の端部がワイヤコネクタの端部に第4連結軸を介して回動自在に連結され、前記緊線用工具は、前記第1カマレス金具に緊線用工具取付部を介して回動自在に連結されるため、延線時及び緊線時にプレハブカマレス工法用連結金具に加わる曲げ荷重が小さくなり、カマレス金具の変形や表面のメッキ剥離を防止することができる。
また、緊線時に使用する緊線用工具においても、緊線用工具を取り付けるカマレス金具に緊線用工具の取付部が密着するように精密な寸法で製作する必要がなく、構造や形状にもこだわらない汎用工具を使用することができる。
According to the first aspect of the invention, the connection fitting for the prefabricated Kamares construction method comprises a Kamares fitting, a wire drawing tool, and a wire winding tool. two or three kamares fittings including a first kamares fitting and a second kamares fitting pivotally connected to each other, the first kamares fitting having the other longitudinal end of the compression clamp. The other end in the longitudinal direction of the second camares metal fitting is rotatably connected to the wire drawing tool via a third connecting shaft. The wire drawing tool is rotatably connected at the other end in the longitudinal direction to the end of the wire connector via a fourth connecting shaft, and the wire tightening tool is connected to the first camares. Since it is rotatably connected to the metal fittings via the tool mounting part for wire winding, the bending load applied to the metal fittings for the prefabricated Kamares method during wire drawing and wire winding is reduced, and deformation of the metal fittings and plating on the surface are reduced. Peeling can be prevented.
In addition, it is not necessary to manufacture with precise dimensions so that the mounting part of the wringing tool is in close contact with the Kamares metal fittings to which the wringing tool is attached. General purpose tools can be used.

請求項2に係る発明によれば、前記第1カマレス金具又は前記第2カマレス金具のクレビス部又はアイ部が吊金車と接する面に対し垂直方向の幅D1と、前記第2カマレス金具又は前記延線用工具のクレビス部又はアイ部が吊金車との接する面に対し垂直方向の幅D2が略同等であり、前記吊金車が通過する前記第2カマレス金具と前記延線用工具の第3連結軸を介した連結部位の溝幅D3と前記吊金車の直径D4の関係がD3<D4であるため、電線張替に用いる場合等の延線作業において、吊金車を通過させる際、段差による送電線の動揺を抑制できることから、従来使用していたカマレス金具の段差をなくすためのパットを必要としない。このため、パットの取付け及び取外し時間を短縮でき、作業性を向上させることができる。 According to the invention of claim 2, the width D1 in the direction perpendicular to the surface where the clevis portion or the eye portion of the first camares fitting or the second camares fitting contacts the hanging wheel, The clevis portion or eye portion of the wire drawing tool has substantially the same width D2 in the direction perpendicular to the plane in contact with the hanging wheel, and the second camares fitting through which the hanging wheel passes and the wire drawing tool. Since the relationship between the groove width D3 of the connecting portion via the third connecting shaft and the diameter D4 of the hoisting wheel is D3<D4, the hoisting wheel is allowed to pass through during wire extension work such as when used for wire replacement. At that time, since it is possible to suppress the swaying of the power transmission line due to the step, there is no need for a pad to eliminate the step of the conventionally used Kamares metal fittings. Therefore, it is possible to shorten the time required for attaching and detaching the pad, and improve workability.

請求項3に係る発明によれば、プレハブカマレス工法用連結金具は、カマレス金具、延線用工具、及び緊線用工具からなり、前記カマレス金具は、長手方向の一端部が圧縮クランプの端部に第1連結軸を介して回動自在に連結され、長手方向のもう一方の端部が第2連結軸を介して前記延線用工具と回動自在に連結され、前記延線用工具は、長手方向のもう一方の端部が、もうひとつの延線用工具と第3連結軸を介して回動自在に連結され、前記もうひとつの延線用工具は、長手方向のもう一方の端部がワイヤコネクタの端部に第4連結軸を介して回動自在に連結され、前記緊線用工具は、前記カマレス金具に緊線用工具取付部の取付孔を介して回動自在に連結されるため、延線時及び緊線時にカマレス金具に加わる曲げ荷重が小さくなって、カマレス金具の変形や表面のメッキ剥離を防止することができる。
また、緊線時に使用する緊線用工具においても、緊線用工具を取り付けるカマレス金具に緊線用工具の取付部が密着するように精密な寸法で製作する必要がなく、構造や形状にもこだわらない汎用工具を使用することができる。
According to the third aspect of the invention, the connection fitting for the prefabricated Kamares method comprises a Kamares fitting, a wire drawing tool, and a wire tightening tool, and one longitudinal end of the Kamares fitting is a compression clamp end. portion is rotatably connected to the wire drawing tool through a first connecting shaft, and the other end in the longitudinal direction is rotatably connected to the wire drawing tool through a second connecting shaft. is rotatably connected to another wire drawing tool via a third connecting shaft at the other end in the longitudinal direction, and the another wire drawing tool is connected to the other longitudinal end The end portion is rotatably connected to the end portion of the wire connector via a fourth connecting shaft, and the cording tool is rotatably attached to the camares metal fitting through the mounting hole of the cording tool mounting portion. Since they are connected, the bending load applied to the Kamares metal fittings during wire drawing and wire drawing is reduced, and deformation of the Kamares metal fittings and peeling of plating on the surface can be prevented.
In addition, it is not necessary to manufacture with precise dimensions so that the mounting part of the wringing tool is in close contact with the Kamares metal fittings to which the wringing tool is attached. General purpose tools can be used.

請求項4に係る発明によれば、前記カマレス金具又は前記延線用工具のクレビス部又はアイ部が吊金車と接する面に対し垂直方向の幅D1と、隣接する前記延線用工具同士のクレビス部又はアイ部が吊金車と接する面に対し垂直方向の幅D2が略同等であり、前記吊金車が通過する前記延線用工具とワイヤコネクタの第4連結軸を介した連結部位の溝幅D3と前記吊金車の直径D4の関係がD3<D4であるため、電線張替に用いる場合等の延線作業において、吊金車を通過させる際、段差による送電線の動揺を抑制できることから、従来使用していたカマレス金具の段差をなくすためのパットを必要としない。このため、パットの取付け及び取外し時間を短縮でき、作業性を向上させることができる。 According to the fourth aspect of the invention, the width D1 in the direction perpendicular to the surface where the clevis portion or the eye portion of the camares fitting or the wire drawing tool contacts the hanging wheel, and the distance between the adjacent wire drawing tools The width D2 of the clevis portion or the eye portion in the direction perpendicular to the plane in contact with the hanging wheel is substantially the same, and the wire drawing tool through which the hanging wheel passes and the wire connector are connected through the fourth connecting shaft. Since the relationship between the groove width D3 and the diameter D4 of the sling wheel is D3<D4, when the sling wheel is passed through in the wire extension work such as the case of re-stretching the electric wire, the transmission line is not shaken due to the step. Since it can be suppressed, there is no need for a pad to eliminate the step of the conventionally used camares metal fitting. Therefore, it is possible to shorten the time required for attaching and detaching the pad, and improve workability.

請求項5に係る発明によれば、カマレス金具は、直角クレビス、直角クレビスリンク、角度クレビス、角度クレビスリンク、直角リンク、及び角度リンクからなる群から選択されるため、クロムモリブデン鋼等の特殊材料を用いた高強度で高価なカマレス金具ではなく、架空送電線の工法等に通常使用されている工具で、軽量且つ安価な汎用性の高い材料を使用することができる。 According to the fifth aspect of the invention, the Kamares fitting is selected from the group consisting of a right angle clevis, right angle clevis link, angle clevis, angle clevis link, right angle link, and angle link. It is not a high-strength and expensive Kamares metal fitting using

請求項6に係る発明によれば、プレハブカマレス工法用連結金具を用いて、鉄塔間に送電線を延線及び緊線する工法であって、前記プレハブカマレス工法用連結金具の一部である前記延線用工具は、延線作業時に使用し、緊線作業前に取り外すことが可能であるため、取り外した延線用工具は繰り返し使用することができる。また、従来の緊線作業と比較して部品点数を低減でき、作業性を向上させ、作業員の作業時間(特に高所での作業時間)を短縮することができる。 According to the invention according to claim 6, a method for extending and tightening a transmission line between towers using a connecting fitting for a prefabricated Kamares method, wherein a part of the connecting fitting for a prefabricated Kamares method Some of the wire drawing tools are used during wire drawing work and can be removed before wire winding work, so the removed wire drawing tool can be used repeatedly. In addition, the number of parts can be reduced as compared with the conventional wire tightening work, the workability can be improved, and the work time (especially work time at high places) of workers can be shortened.

本発明の実施例に係るプレハブカマレス工法用連結金具の平面図であって、(a)は本発明の一実施形態に係るプレハブカマレス工法用連結金具の平面図、(b)は(a)の90°側面方向を示した平面図である。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view of a connecting fitting for prefabricated kamares construction method according to an embodiment of the present invention, wherein (a) is a plan view of a connecting fitting for prefabricated kamares construction method according to one embodiment of the present invention; ) is a plan view showing the 90° side direction. 本発明の変更例に係るプレハブカマレス工法用連結金具の平面図であって、(a)は本発明の別の実施形態に係るプレハブカマレス工法用連結金具の平面図、(b)は(a)の平面図の90°側面方向を示した平面図である。It is a top view of the connection metal fittings for prefabricated kamares construction method according to the modification of the present invention, (a) is a plan view of the connection metal fittings for prefabricated kamares construction method according to another embodiment of the present invention, (b) is ( It is the top view which showed the 90-degree side direction of the top view of a). 本発明の実施例に係るプレハブカマレス工法用連結金具を吊金車が通過する状況を説明するための平面図であって、(a)は本発明の一実施形態に係るプレハブカマレス工法用連結金具の平面図、(b)は(a)の90°側面方向を示した平面図、(c)は(a)を吊金車が通過する際の説明図、(d)は(b)を吊金車が通過する際の説明図である。FIG. 4A is a plan view for explaining a state in which a hanging wheel passes through a connecting fitting for a prefabricated kamares construction method according to an embodiment of the present invention; A plan view of the connecting fitting, (b) is a plan view showing the 90° side direction of (a), (c) is an explanatory view when the hanging wheel passes through (a), (d) is (b) is an explanatory diagram of when the hanging wheel passes through. 従来技術におけるプレハブカマレス工法用連結金具を示す平面図であって、(a)はプレハブカマレス工法用連結金具の従来品を示す平面図、(b)は(a)の90°側面方向を示した平面図、(c)はカマレス金具に緊線用工具を連結させた際の平面図である。It is a plan view showing a connection fitting for prefabricated kamares construction method in the prior art, (a) is a plan view showing a conventional product of a connection fitting for prefabricated kamares construction method, (b) is a 90 ° side direction of (a) (c) is a plan view when a cording tool is connected to the camares fitting. 本発明に係るカマレス金具が2個又は1個の場合に連結させる緊線用工具の一実施形態を示す平面図であって、(a)はカマレス金具2個の場合の緊線用工具を示す平面図、(b)はカマレス金具1個の場合の緊線用工具を示す平面図である。1 is a plan view showing an embodiment of a wire-stretching tool for connecting two or one chamares metal fittings according to the present invention, where (a) shows a wire-stretching tool for two chamares metal fittings; FIG. FIG. 10(b) is a plan view showing a wire tightening tool in the case of one camares metal fitting. 本発明に係るカマレス金具の延線時の引張荷重に対する発生応力及び発生歪量についての測定実験の説明図であって、(a)は実験条件の説明図、(b)は測定結果を示す図である。FIG. 3 is an explanatory diagram of a measurement experiment for the generated stress and the generated strain amount with respect to the tensile load during wire drawing of the Kamares metal fitting according to the present invention, (a) is an explanatory diagram of the experimental conditions, and (b) is a diagram showing the measurement results. is. 比較例の延線時の引張荷重に対する発生応力及び発生歪量についての測定実験の説明図であって、(a)は実験条件の説明図、(b)は測定結果を示す図である。FIG. 4 is an explanatory diagram of a measurement experiment on the generated stress and the amount of generated strain with respect to a tensile load during wire drawing in a comparative example, where (a) is an explanatory diagram of experimental conditions and (b) is a diagram showing the measurement results. 比較例の緊線時の引張荷重に対する発生応力及び発生歪量についての測定実験の説明図であって、(a)は実験条件の説明図、(b)は測定結果を示す図である。FIG. 4 is an explanatory diagram of a measurement experiment for the generated stress and the amount of generated strain with respect to a tensile load at the time of tightening of a comparative example, in which (a) is an explanatory diagram of experimental conditions and (b) is a diagram showing the measurement results. 従来のプレハブカマレス工法を実施する際の延線用金車部分の斜視図である。FIG. 11 is a perspective view of a wire drawing wheel portion when implementing a conventional prefabricated camares construction method.

以下、本発明に係るプレハブカマレス工法用連結金具の好適な実施形態について、図面を参照しながら説明する。
図1~4を参照して本発明に係るプレハブカマレス工法用連結金具について説明する。
A preferred embodiment of a connecting fitting for a prefabricated camares construction method according to the present invention will be described below with reference to the drawings.
A connection fitting for prefabricated camares construction method according to the present invention will be described with reference to FIGS. 1 to 4. FIG.

図1は、本発明の実施例に係るプレハブカマレス工法用連結金具(1)の平面図であり、第1カマレス金具(21)及び第2カマレス金具(22)共に直角クレビスリンク(CLR)(2)で構成されている。
図2は、本発明の変更例に係るプレハブカマレス工法用連結金具(1)の平面図であり、第1カマレス金具(21)は直角クレビス(CR)(3)、第2カマレス金具(22)は直角リンク(LR)(4)で構成されている。
FIG. 1 is a plan view of a prefabricated kamares connection fitting (1) according to an embodiment of the present invention. Both the first kamares fitting (21) and the second kamares fitting (22) 2).
FIG. 2 is a plan view of a prefabricated kamares construction method connecting fitting (1) according to a modification of the present invention. ) consists of right angle links (LR) (4).

図1及び図2に示す如く、本発明に係るプレハブカマレス工法用連結金具(1)は、カマレス金具、延線用工具(5)及び緊線用工具(図1及び図2中には図示せず)から構成されている。
尚、第1カマレス金具(21)及び第2カマレス金具(22)は、架空送電線の延線及び緊線工法で通常用いられる工具であり、直角クレビス(3)、直角クレビスリンク(2)、角度クレビス、角度クレビスリンク、直角リンク(4)、角度リンク等当業者に自明のものであれば、全て用いることができる。
As shown in FIGS. 1 and 2, the connecting fitting (1) for prefabricated Kamares construction method according to the present invention includes a Kamares fitting, a wire drawing tool (5), and a wire tightening tool (illustration in FIGS. 1 and 2). not shown).
Incidentally, the first camares fitting (21) and the second camares fitting (22) are tools normally used in the wire drawing and tightening method of overhead power transmission lines, and are a right angle clevis (3), a right angle clevis link (2), Angle clevises, angle clevis links, right angle links (4), angle links, etc., all of which are obvious to those skilled in the art can be used.

プレハブカマレス工法用連結金具(1)は、第1カマレス金具(21)及び第2カマレス金具(22)が第2連結軸(12)で連結することにより、第1カマレス金具(21)と第2カマレス金具(22)とを一体化する。
プレハブカマレス工法用連結金具(1)は、平面視略楕円形状を呈しており、短尺クランプ(C)側から、第1カマレス金具(21)及び第2カマレス金具(22)、延線用工具(5)の順にワイヤコネクタ(33)へ連結されている。
プレハブカマレス工法用連結金具(1)の構成部品は夫々長手方向の端部に連結軸を備えており、短尺クランプ(C)と第1カマレス金具(21)は第1連結軸(11)、第1カマレス金具(21)と第2カマレス金具(22)は第2連結軸(12)、第2カマレス金具(22)と延線用工具(5)は第3連結軸(13)、延線用工具(5)とワイヤコネクタ(33)は第4連結軸(14)で回動自在に連結されている。
また、緊線作業時には、緊線用工具(6)が第1カマレス金具(21)の緊線用工具取付部(図1及び図2中には図示せず)を介して回動自在に連結される。
In the prefabricated kamares construction method connecting fitting (1), the first kamares fitting (21) and the second kamares fitting (22) are connected by the second connecting shaft (12), whereby the first kamares fitting (21) and the second kamares fitting (21) are connected. 2 Integrate with the camares fitting (22).
The connection fitting for the prefabricated Kamares construction method (1) has a substantially elliptical shape in a plan view. (5) are connected to the wire connector (33) in that order.
The component parts of the prefabricated kamares construction method connecting fitting (1) each have a connecting shaft at the end in the longitudinal direction. The first camareth metal fitting (21) and the second camareth metal fitting (22) are the second connecting shaft (12), the second camareth metal fitting (22) and the wire drawing tool (5) are the third connecting shaft (13) and the wire drawing. The tool (5) and the wire connector (33) are rotatably connected by a fourth connecting shaft (14).
Also, during the wire-tightening operation, the wire-tightening tool (6) is rotatably connected via the wire-tightening tool mounting portion (not shown in FIGS. 1 and 2) of the first camares fitting (21). be done.

叙上の通り、第1カマレス金具(21)及び第2カマレス金具(22)は同じ形状を備えた部材である(図1参照)。
しかしながら、夫々が異なる部材であってもよく、例えば、第1カマレス金具(21)に図1に記載のカマレス金具を用い、第2カマレス金具(22)に図2に記載のカマレス金具を用いても良い。
As described above, the first camares metal fitting (21) and the second camareth metal fitting (22) are members having the same shape (see FIG. 1).
However, they may be different members. For example, the first camares metal fitting (21) uses the camares metal fitting shown in FIG. 1, and the second camares metal fitting (22) uses the camares metal fitting shown in FIG. Also good.

プレハブカマレス工法用連結金具(1)の形状は平面視略楕円形状に限定されず、第1カマレス金具(21)と第2カマレス金具(22)とを一体化することができる形状であれば、例えば、長円状、矩形状等、いかなる形状であってもよい。
また、第2連結軸(12)と第3連結軸(13)の形状は、第1カマレス金具(21)及び第2カマレス金具(22)と回動自在に連結することができる形状であり、当業者に自明のものであれば、いかなる形状であってもよい。
The shape of the prefabricated kamares construction method connecting fitting (1) is not limited to an approximately elliptical shape in plan view, and may be any shape that allows the first kamares fitting (21) and the second kamares fitting (22) to be integrated. , for example, an elliptical shape, a rectangular shape, or any other shape.
The shape of the second connecting shaft (12) and the third connecting shaft (13) is such that they can be rotatably connected to the first camareth metal fitting (21) and the second camareth metal fitting (22), It can be of any shape as would be obvious to a person skilled in the art.

叙上の通り、プレハブカマレス工法用連結金具(1)の第1カマレス金具(21)及び第2カマレス金具(22)等の連結機構は特に限定されないが、例えば、図1の(a)に示す如く、第1カマレス金具(21)及び第2カマレス金具(22)の両端に設けられたコッタピン(P)により連結してもよい。
尚、第1連結軸(11)、第2連結軸(12)、及び第3連結軸(13)にはコッタピン(P)だけでなく、例えばボルト等、連結に通常用いられる部材であり、当業者に自明である部材であれば、全て用いることができる。
As described above, the connection mechanism of the first kamares fitting (21) and the second kamares fitting (22) of the prefabricated kamares construction method connection fitting (1) is not particularly limited. As shown, the first camares fitting (21) and the second camareth fitting (22) may be connected by cotter pins (P) provided at both ends.
The first connecting shaft (11), the second connecting shaft (12), and the third connecting shaft (13) are not only cotter pins (P), but also members normally used for connection, such as bolts. Any member that is obvious to a person skilled in the art can be used.

図3は、本発明の実施例に係るプレハブカマレス工法用連結金具(1)を吊金車(K2)が通過する状況を説明するための平面図であり、(a)は本発明の一実施形態に係るプレハブカマレス工法用連結金具(1)の平面図、(b)は(a)の90°側面方向を示した平面図、(c)は(a)を吊金車(K2)が通過する際の説明図、(d)は(b)を吊金車(K2)が通過する際の説明図を示している。 FIG. 3 is a plan view for explaining a situation in which a sling wheel (K2) passes through a connecting fitting (1) for prefabricated kamares construction method according to an embodiment of the present invention, and (a) is one aspect of the present invention. A plan view of a connecting fitting (1) for a prefabricated camares construction method according to an embodiment, (b) is a plan view showing a 90° side direction of (a), (c) is (a) a hanging wheel (K2) (d) is an explanatory view when the hook wheel (K2) passes through (b).

吊金車(K2)は、送電線の張替えや撤去工事などで採用される吊金延線工法において使用される。吊金車(K2)は、鉄塔間に張った支持線(電線又は支持ロープ)に多数吊下げて使用され、送電線の張替え、撤去、新設をおこなうために用いられる。 The hoisting wheel (K2) is used in the hoisting wire drawing method employed in transmission line replacement or removal work. A large number of hanging pulleys (K2) are used by being suspended from support lines (electric wires or support ropes) stretched between steel towers, and are used to replace, remove, or construct new transmission lines.

吊金工法は、金車を鉄塔のみでなく、径間内の既設送電線や延線が完了した送電線、又は新たに架設したワイヤロープ(支持線)から吊り下げ、その金車上をメッセンジャワイヤにより送電線を牽引する方法で、既設送電線や延線が完了した送電線、又は新たに架設したワイヤロープ(支持線)から吊下げた小型金車(吊金車(K2))で径間内の送電線及び延線用ワイヤロープを支持することで、それらの垂下防止を図る工法である。送電線を支持線で支えることで垂下防止を図るため、送電線の延線張力は小さくなり、送電線の負荷は引抜延線工法よりも大幅に少なくて済み、劣化電線の張替えなど、低張力を要する延線に適用される。
吊金工法の特徴は、延線区画内に横過物件があっても防護設備を設置することなく延線できることであり、防護対象物件が多数ある人家密集地等の市街化地域、特別高圧、鉄道、高速道路横断箇所など、足場構築の難しい箇所や充電部接近箇所の延線に採用される。
In the hanging metal method, the metal wheel is suspended not only from the steel tower, but also from the existing transmission line in the span, the transmission line that has been extended, or the newly installed wire rope (support line), and the messenger is placed on the metal wheel. A method of pulling a transmission line with a wire. A small pulley (Hanging pulley (K2)) suspended from an existing transmission line, a transmission line that has been completely extended, or a newly installed wire rope (support line) This is a construction method that supports the power transmission line and the wire rope for wire extension in the space to prevent them from drooping. Since the transmission line is supported by the support line to prevent drooping, the extension tension of the transmission line is reduced, and the load on the transmission line is significantly less than that of the drawing extension method. Applies to extended lines requiring
The feature of the hanging metal method is that it can be drawn without installing protective equipment even if there is an item that crosses the line section. It is used in areas where scaffolding is difficult to build, such as railroad crossings and expressway crossings, and for extending lines near live parts.

図3の(a)、(b)は、図1に示したプレハブカマレス工法用連結金具(1)である。このプレハブカマレス工法用連結金具(1)において、第1カマレス金具(21)の第1連結軸(11)から第2連結軸(12)までの長さは90mm、第2カマレス金具(22)の第2連結軸(12)から第3連結軸(13)までの長さは80mm、延線用工具(5)の第3連結軸(13)から第4連結軸(14)までの長さは80mmであり、これら3箇所の長さを合わせると250mmである。
また、第1カマレス金具(21)又は第2カマレス金具(22)のクレビス部又はアイ部が吊金車(K2)と接する面に対し垂直方向の幅をD1とし、第2カマレス金具(22)又は延線用工具(5)のクレビス部又はアイ部が吊金車(K2)と接する面に対し垂直方向の幅をD2とすると、本発明に係る一実施例では、(c)に示したように、D1及びD2の長さは共に80mmであり、略同等であった。また、吊金車(K2)が通過する第2カマレス金具(22)と延線用工具(5)の第3連結軸(13)を介した連結部位の溝幅をD3、吊金車(K2)の直径をD4とすると、本発明に係る一実施例では、(c)に示したように、D3<D4であるとき、吊金車(K2)がプレハブカマレス工法用連結金具(1)を通過する際の発生歪量を減少させることができる。
このように、図3に示すプレハブカマレス工法用連結金具(1)は、吊金車通過時における発生歪量を減少させることができるため、変形が生じ難く、長期間に亘って安全に使用することができる。
FIGS. 3(a) and 3(b) are the connecting fittings (1) for the prefabricated camares construction method shown in FIG. In this prefabricated kamares method connecting fitting (1), the length from the first connecting shaft (11) of the first kamares fitting (21) to the second connecting shaft (12) is 90 mm, and the second kamares fitting (22) has a length of 90 mm. The length from the second connecting shaft (12) to the third connecting shaft (13) is 80 mm, and the length from the third connecting shaft (13) to the fourth connecting shaft (14) of the wire drawing tool (5) is 80 mm, and the total length of these three locations is 250 mm.
D1 is the width in the direction perpendicular to the surface where the clevis portion or eye portion of the first camares fitting (21) or the second camares fitting (22) contacts the hanging wheel (K2), and the second camares fitting (22) Alternatively, assuming that the width in the direction perpendicular to the surface where the clevis portion or eye portion of the wire drawing tool (5) is in contact with the hanging wheel (K2) is D2, in one embodiment according to the present invention, the width shown in (c) is As can be seen, the lengths of D1 and D2 were both 80 mm and approximately the same. In addition, the groove width of the connecting portion of the second camares fitting (22) through which the hanging wheel (K2) passes and the third connecting shaft (13) of the wire drawing tool (5) is D3, and the hanging wheel (K2) is ) is D4, in one embodiment according to the present invention, as shown in (c), when D3<D4, the hanging wheel (K2) is the connecting fitting for the prefabricated camares construction method (1) It is possible to reduce the amount of strain generated when passing through.
As described above, the connecting fitting (1) for the prefabricated Kamares construction method shown in FIG. 3 can reduce the amount of strain generated when passing the hanging wheel, so that it is difficult to deform and can be used safely over a long period of time. can do.

図4は、従来技術におけるプレハブカマレス工法用連結金具であり、(a)はプレハブカマレス工法用連結金具の従来品を示す平面図、(b)は(a)の90°側面方向を示した平面図、(c)は中間カマレス金具(23)に緊線用工具(6)を連結させた際の平面図を示している。 FIG. 4 shows a connection fitting for a prefabricated kamares construction method in the prior art, (a) is a plan view showing a conventional connection fitting for a prefabricated kamares construction method, and (b) shows a 90° side direction of (a). (c) is a plan view when the wire tightening tool (6) is connected to the intermediate camares fitting (23).

図4に示す如く、従来のプレハブカマレス工法用連結金具は、短尺クランプ(C)側から、第1カマレス金具(21)、中間カマレス金具(23)、及び延線用工具(5)の順にワイヤコネクタ(33)へ連結されている。
従来のプレハブカマレス工法用連結金具は、本発明に係る図1のプレハブカマレス工法用連結金具(1)と比較し、第1カマレス金具(21)と延線用工具(5)との間に、図4に示したように、第2連結軸(12)と第3連結軸(13)間の長さが図1の第2カマレス金具(22)の2倍である160mmの中間カマレス金具(23)で構成されている。中間カマレス金具(23)が、本発明に係る図1の第2カマレス金具(22)の2倍の長さを有するため、吊金車(K2)が従来のプレハブカマレス工法用連結金具を通過する際に吊金車(K2)の直径(D4)よりも大きな溝幅(D3)を乗り越えねばならず、送電線の動揺や、カマレス金具等に大きな曲げ応力が加わり、変形や表面のメッキ剥離の原因となっている。
また、従来のプレハブカマレス工法用連結金具は、夫々長手方向の端部に連結軸を備えており、短尺クランプ(C)と第1カマレス金具(21)は第1連結軸(11)、第1カマレス金具(21)と中間カマレス金具(23)は第2連結軸(12)、中間カマレス金具(23)と延線用工具(5)は第3連結軸(13)、延線用工具(5)とワイヤコネクタ(33)は第4連結軸(14)で回動自在に連結されている。
緊線作業時には、緊線用工具(6)が、中間カマレス金具(23)の緊線用工具取付部(15)を介して連結される。
As shown in FIG. 4, the conventional connecting fitting for the prefabricated Kamares construction method consists of a first Kamares fitting (21), an intermediate Kamares fitting (23), and a wire drawing tool (5) in this order from the short clamp (C) side. It is connected to a wire connector (33).
Compared with the connection fitting for prefabricated kamares construction method (1) according to the present invention in FIG. 4, the length between the second connecting shaft (12) and the third connecting shaft (13) is 160 mm, which is twice the length of the second connecting shaft (22) in FIG. (23). Since the intermediate kamares fitting (23) has twice the length of the second kamares fitting (22) of FIG. When installing, it is necessary to overcome a groove width (D3) that is larger than the diameter (D4) of the hanging wheel (K2), which causes vibration of the transmission line and large bending stress on the Kamares metal fittings, etc., resulting in deformation and peeling of the plating on the surface. is the cause of
In addition, conventional connecting fittings for the prefabricated kamares construction method each have a connecting shaft at its longitudinal end. 1 Kamares metal fitting (21) and intermediate Kamares metal fitting (23) are connected to second connecting shaft (12), intermediate Kamares metal fitting (23) and wire drawing tool (5) are connected to third connecting shaft (13), wire drawing tool ( 5) and the wire connector (33) are rotatably connected by a fourth connecting shaft (14).
During the wire tightening work, the wire binding tool (6) is connected via the wire binding tool attachment portion (15) of the intermediate camares fitting (23).

図5は、本発明に係るカマレス金具が2個又は1個の場合に連結させる緊線用工具の一実施形態であり、(a)はカマレス金具2個の場合の緊線用工具を示す平面図、(b)はカマレス金具1個の場合の緊線用工具を示している。
(a)に示したカマレス金具2個の場合は、第1カマレス金具(21)と緊線用工具(6)を緊線用工具取付部(15)を介して連結させる。
(b)に示したカマレス金具1個の場合は、第1カマレス金具(21)の緊線用工具取付部(15)に取付孔を設けて緊線用工具(6)を連結させるが、緊線用工具取付部(15)の取付孔を設ける場所や数、孔形状は特に限定されない。
本発明に係る緊線用工具(6)は、図5に示したように、例えば、特殊平行クレビス(7)やUクレビス(8)等が挙げられるが、当業者に自明である部材であれば、全て用いることができる。
FIG. 5 shows an embodiment of a wire-stretching tool for connecting two or one chamares metal fittings according to the present invention, and (a) is a plane showing the wire-stretching tool in the case of two chamares metal fittings. FIG. (b) shows a wire tightening tool for a single camares metal fitting.
In the case of two kamares metal fittings shown in (a), the first kamares metal fitting (21) and the cording tool (6) are connected via the cording tool mounting portion (15).
In the case of one kamares metal fitting shown in FIG. The location, number, and shape of the mounting holes of the wire tool mounting portion (15) are not particularly limited.
As shown in FIG. 5, the wire tightening tool (6) according to the present invention includes, for example, a special parallel clevis (7) and a U clevis (8). can be used.

以下、本発明に係るプレハブカマレス工法の一例について説明する。尚、以下に説明する工法は一例であって、これに限定されない。
尚、以下の例では、本発明に係るプレハブカマレス工法用連結金具(1)を用いて緊線作業を実施しているが、これに限定されず、下記工程を実施できるプレハブカマレス工法用連結金具(1)であり、当業者に自明のものであれば、いかなるものを用いても良い。
An example of the prefabricated camares construction method according to the present invention will be described below. Note that the construction method described below is an example and is not limited to this.
In the following example, the connection fitting (1) for the prefabricated kamares construction method according to the present invention is used to perform the wire tightening work, but the present invention is not limited to this, and the prefabricated kamares construction method can perform the following steps. Any connecting fitting (1) may be used as long as it is obvious to those skilled in the art.

まず、送電線の延線作業を実施する。
延線作業時において、短尺クランプ(C)には第1カマレス金具(21)が回動自在に連結されており、プレハブカマレス工法用連結金具の他端部の延線用工具(5)にはワイヤコネクタ(33)を介して延線用ワイヤが連結されている。
延線区画中の鉄塔に延線用金車(K1)を取付け、ドラム場から各鉄塔間、及び各鉄塔からエンジン場間に張り渡したメッセンジャワイヤをウインチで巻取ることにより、端部に接続した送電線(L)を牽引する。
尚、延線作業の方法や用いる工具等については特に限定されず、送電線(L)の延線作業に通常用いられ、当業者に自明の方法や工具であれば、いかなるものを用いても良い。
First, the extension work of the transmission line will be carried out.
During the wire drawing operation, the short clamp (C) is rotatably connected to the first Kamares fitting (21), and the wire drawing tool (5) at the other end of the prefabricated Kamares method coupling fitting (5) is connected to the short clamp (C). is connected to a drawing wire through a wire connector (33).
A wire drawing wheel (K1) is attached to the steel tower in the wire drawing section, and the messenger wire stretched from the drum field to each steel tower and from each steel tower to the engine field is wound with a winch and connected to the end. tow the power transmission line (L).
The method and tools used for the wire drawing work are not particularly limited. good.

延線作業完了後に緊線作業を実施する。本発明に係るプレハブカマレス工法用連結金具(1)は、延線用工具(5)を取り外すことが可能であり、延線用工具(5)を取り外してから、第1カマレス金具(21)の緊線用工具取付部(15)に緊線用工具(6)を連結させて緊線作業をおこなってもよい。
これにより、緊線作業時に用いる部品点数を低減することができ、作業性を向上させると共に作業時間(特に高所での作業時間)を短縮することができる。
尚、延線作業完了後に取り外し可能な延線用工具(5)は特に限定されず、送電線(L)の延線作業時に通常用いられ、当業者に自明のものであれば、いかなるものでも用いることができる。
Wire tightening work will be carried out after completion of wire drawing work. The connection fitting (1) for prefabricated Kamares construction method according to the present invention is capable of removing the wire drawing tool (5), and after removing the wire drawing tool (5), the first Kamares fitting (21) can be removed. The wire winding work may be performed by connecting the wire winding tool (6) to the wire winding tool mounting portion (15).
This makes it possible to reduce the number of parts used in wire tightening work, improve workability, and shorten work time (especially work time at high places).
The wire drawing tool (5) that can be removed after completion of the wire drawing work is not particularly limited, and any tool that is commonly used during the wire drawing work of the power transmission line (L) and is obvious to those skilled in the art can be used. can be used.

以下、本発明に係るプレハブカマレス工法用連結金具並びにこれを用いた延線及び緊線工法の実施例を示すことにより、本発明の効果をより明確なものとする。但し、本発明は、以下の実施例に何ら限定されるものではない。 Hereinafter, the effects of the present invention will be made clearer by showing examples of a connecting fitting for a prefabricated camares construction method according to the present invention and a wire drawing method and wire winding method using the same. However, the present invention is by no means limited to the following examples.

(延線時の引張荷重に対する発生応力及び発生歪量の測定)
本発明に係るプレハブカマレス工法用金具に用いるカマレス金具と、従来のカマレス金具を用いて、延線時の引張荷重に対しカマレス金具に生じる応力及び歪みを測定した。
本発明に係るカマレス金具として、図1に記載のカマレス金具を用いた。
比較例のカマレス金具としては、CLPK-2423PK(日本カタン社製)を用いた。
表1は本発明に係るカマレス金具に、金車抱き角45°の条件で、10、20、30及び38kNの引張荷重を印加し、図6の(a)に示す位置(P-1、P-2)での発生応力(N/mm)及び発生歪量(μs)を測定した結果を示す。
(Measurement of generated stress and generated strain against tensile load during wire drawing)
The stress and strain generated in the Kamares metal fittings with respect to the tensile load during wire drawing were measured using the Kamares metal fittings used in the metal fittings for the prefabricated Kamares construction method according to the present invention and the conventional Kamares metal fittings.
The camares metal fitting shown in FIG. 1 was used as the camares metal fitting according to the present invention.
CLPK-2423PK (manufactured by Nippon Katan Co., Ltd.) was used as a camares metal fitting of a comparative example.
Table 1 shows that a tensile load of 10, 20, 30 and 38 kN was applied to the Kamares metal fitting according to the present invention under the condition of a wheel holding angle of 45 °, and the positions (P-1, P -2) shows the results of measuring the generated stress (N/mm 2 ) and generated strain amount (μs).

Figure 2022109820000002
Figure 2022109820000002

表2は比較例として、従来品のカマレス金具に、金車抱き角45°の条件で、10、20、30及び38kNの引張荷重を印加して、図7の(a)に示す位置(P-3、P-4、P-5、P-6)での発生応力(N/mm)及び発生歪量(μs)を測定した結果を示す。 Table 2 shows, as a comparative example, tensile loads of 10, 20, 30 and 38 kN were applied to a conventional Kamares metal fitting under the condition of a wheel holding angle of 45°, and the position (P -3, P-4, P-5, and P-6), the results of measuring the generated stress (N/mm 2 ) and generated strain amount (μs) are shown.

Figure 2022109820000003
Figure 2022109820000003

表1及び表2に記載の通り、全ての位置、全ての荷重において、本発明に係るカマレス金具に生じる発生応力(N/mm)及び発生歪量(μs)は、比較例よりも小さいことがわかった。
尚、本発明に係るカマレス金具に生じる発生応力は、従来品のカマレス金具に生じる発生応力と比較し、約43%であった。
この結果より、延線時において、本発明に係るカマレス金具に生じる発生応力(N/mm)及び発生歪量(μs)は従来品より小さいことがわかった。それゆえに、本発明に係るカマレス金具は従来品よりも長期間に亘って繰り返し安全に使用することができる。
As shown in Tables 1 and 2, the generated stress (N/mm 2 ) and generated strain amount (μs) generated in the camares metal fitting according to the present invention are smaller than those of the comparative example at all positions and all loads. I found out.
Incidentally, the generated stress generated in the camares metal fitting according to the present invention was about 43% of the generated stress generated in the conventional camares metal fitting.
From this result, it was found that the generated stress (N/mm 2 ) and generated strain amount (μs) generated in the Kamares metal fitting according to the present invention during wire drawing were smaller than those of the conventional product. Therefore, the camares fitting according to the present invention can be used repeatedly and safely over a longer period of time than conventional products.

(緊線時の引張荷重対する発生応力及び発生歪量の測定)
次に、本発明に係るプレハブカマレス工法用連結金具と、従来のプレハブカマレス工法用連結金具を用いて、緊線時の引張荷重に対する応力及び歪みを測定した。
本発明に係るプレハブカマレス工法用連結金具として、図1に記載のプレハブカマレス工法用連結金具を用いた。
比較例として、従来のプレハブカマレス工法用連結金具を用いた。また、カマレス金具はCLPK-2423PK(日本カタン社製)を用いた。
表3は、比較例の従来のプレハブカマレス工法用連結金具を用いて、10、20、30、40、50、及び55kNの引張荷重を印加し、図8の(a)に示す位置(P-7、P-8、P-9、P-10、P-11)での発生応力(N/mm)及び発生歪量(μs)を測定した結果を示す。
(Measurement of generated stress and amount of generated strain against tensile load during tightening)
Next, the stress and strain with respect to the tensile load during wire tightening were measured using the connecting fitting for the prefabricated kamares construction method according to the present invention and the conventional connecting fitting for the prefabricated kamares construction method.
As the connection fitting for the prefabricated kamares construction method according to the present invention, the connection fitting for the prefabricated kamares construction method shown in FIG. 1 was used.
As a comparative example, a conventional connecting fitting for the prefabricated Kamares construction method was used. In addition, CLPK-2423PK (manufactured by Nippon Katan Co., Ltd.) was used as the camares fitting.
Table 3 shows the results of applying a tensile load of 10, 20, 30, 40, 50, and 55 kN using the conventional prefabricated Kamares connection fitting of the comparative example, and the position (P -7, P-8, P-9, P-10, and P-11), the results of measuring the generated stress (N/mm 2 ) and generated strain amount (μs) are shown.

Figure 2022109820000004
Figure 2022109820000004

一方、図1に記載のカマレス金具に、本発明に係るプレハブカマレス工法用連結金具を用いて、10、20、30、40、50、及び55kNの引張荷重を印加したが、カマレス金具に応力及び歪みは発生しなかった。
この結果より、緊線時において、本発明に係るプレハブカマレス工法用連結金具を用いることにより、緊線用工具に曲げ応力による歪みや表面のメッキ剥離が生じることを防止できる。それゆえに、本発明に係るプレハブカマレス工法用連結金具を緊線作業に用いることで、同じカマレス金具を長期間繰り返し使用することができる。
On the other hand, tensile loads of 10, 20, 30, 40, 50, and 55 kN were applied to the Kamares fitting shown in FIG. and no distortion occurred.
From this result, it is possible to prevent distortion and peeling of plating on the surface of the wire tightening tool due to bending stress by using the connecting fitting for the prefabricated Kamares construction method according to the present invention. Therefore, by using the connecting fitting for the prefabricated Kamares construction method according to the present invention for wire tightening work, the same Kamares fitting can be used repeatedly for a long period of time.

本発明に係るプレハブカマレス工法用連結金具は、送電線の延線及び緊線時にカマレス金具等に加わる曲げ応力(発生歪量)を低減させることで、カマレス金具及び緊線用工具の変形や破損、表面のメッキ剥離の虞が減少するため、長期間繰り返し使用することができる。また、汎用材料の工具を用いてカマレス金具の部品点数低減や軽量化が可能であり、さらには、延線用工具は緊線作業前に取り外すことが可能なため、繰り返し使用することができ、コスト削減につながる。加えて、公衆の安全や延線及び緊線作業をおこなう作業員の安全確保、作業性の向上、作業時間や工期短縮に有効に使用することができる。
それゆえに、本発明に係るプレハブカマレス工法用連結金具は、鉄塔間における延線及び緊線作業に好適に利用できる。
The connection fitting for prefabricated Kamares construction method according to the present invention reduces the bending stress (amount of strain generated) applied to the Kamares fitting and the like during the drawing and tightening of the power transmission line, thereby reducing the deformation of the Kamares fitting and the tightening tool. It can be used repeatedly for a long period of time because the risk of breakage and surface plating peeling is reduced. In addition, it is possible to reduce the number of parts and reduce the weight of the Kamares metal fittings by using tools made of general-purpose materials. It leads to cost reduction. In addition, it can be effectively used to ensure public safety, safety of workers who perform wire drawing and wire tightening work, improvement of workability, and shortening of work time and construction period.
Therefore, the connecting fitting for the prefabricated Kamares construction method according to the present invention can be suitably used for wire drawing and wire tightening work between steel towers.

1 プレハブカマレス工法用連結金具
2 直角クレビスリンク(CLR)
3 直角クレビス(CR)
4 直角リンク(LR)
5 延線用工具
6 緊線用工具
7 特殊平行クレビス
8 Uクレビス
11 第1連結軸
12 第2連結軸
13 第3連結軸
14 第4連結軸
15 緊線用工具取付部
21 第1カマレス金具
22 第2カマレス金具
23 中間カマレス金具
31 圧縮型引留クランプ
31a アイ部
32 カマレス金具
32a クレビス部
32b アイ部
32c アイ部
32c′取付孔
33 ワイヤコネクタ
C 短尺クランプ
D1 カマレス金具又は延線用工具のクレビス部又はアイ部が吊金車と接する面に対し垂直方向の幅
D2 カマレス金具又は延線用工具のクレビス部又はアイ部が吊金車と接する面に対し垂直方向の幅
D3 吊金車が通過する連結軸を介した連結部位の溝幅
D4 吊金車の直径
K1 延線用金車
K2 吊金車
P コッタピン
L 送電線
1 Connection fitting for prefabricated camares construction method 2 Right angle clevis link (CLR)
3 Right angle clevis (CR)
4 right angle link (LR)
5 Wire drawing tool 6 Wire tightening tool 7 Special parallel clevis 8 U clevis 11 First connecting shaft 12 Second connecting shaft 13 Third connecting shaft 14 Fourth connecting shaft 15 Wire tightening tool mounting portion 21 First camares fitting 22 Second Kamares fitting 23 Intermediate Kamares fitting 31 Compression type anchoring clamp 31a Eye part 32 Kamares fitting 32a Clevis part 32b Eye part 32c Eye part 32c' Mounting hole 33 Wire connector C Short clamp D1 Kamares fitting or clevis part of wire drawing tool or Width D2 in the vertical direction to the surface where the eye part contacts the hanging wheel Groove width D4 of connecting portion via shaft Diameter of hanging wheel K1 Wire drawing wheel K2 Hanging wheel P Cotter pin L Transmission line

Claims (6)

鉄塔間に架設される送電線の延線及び緊線に使用するためのプレハブカマレス工法用連結金具であって、
前記プレハブカマレス工法用連結金具は、カマレス金具、延線用工具、及び緊線用工具からなり、
前記カマレス金具は、連結軸を介して互いに長手方向の端部が回動自在に連結された第1カマレス金具及び第2カマレス金具を含む2個又は3個のカマレス金具からなり、
前記第1カマレス金具は、長手方向のもう一方の端部が圧縮クランプの端部に第1連結軸を介して回動自在に連結され、
前記第2カマレス金具は、長手方向のもう一方の端部が第3連結軸を介して前記延線用工具に回動自在に連結され、
前記延線用工具は、長手方向のもう一方の端部がワイヤコネクタの端部に第4連結軸を介して回動自在に連結され、
前記緊線用工具は、前記第1カマレス金具に緊線用工具取付部を介して回動自在に連結されることを特徴とするプレハブカマレス工法用連結金具。
A connection fitting for prefabricated Kamares construction method for use in extension and tightening of transmission lines installed between steel towers,
The connection fitting for the prefabricated Kamares construction method comprises a Kamares fitting, a wire drawing tool, and a wire tightening tool,
The camares metal fitting comprises two or three camares metal fittings including a first camares metal fitting and a second camares metal fitting whose ends in the longitudinal direction are rotatably connected to each other via a connecting shaft,
the other end of the first camares fitting in the longitudinal direction is rotatably connected to the end of the compression clamp via a first connecting shaft;
The second camares fitting is rotatably connected to the wire drawing tool via a third connecting shaft at the other end in the longitudinal direction,
The wire drawing tool has the other end in the longitudinal direction rotatably connected to the end of the wire connector via a fourth connecting shaft,
A connecting fitting for a prefabricated kamares construction method, wherein the wrenching tool is rotatably connected to the first kamares fitting through a wrenching tool mounting portion.
前記第1カマレス金具又は前記第2カマレス金具のクレビス部又はアイ部が吊金車と接する面に対し垂直方向の幅D1と、前記第2カマレス金具又は前記延線用工具のクレビス部又はアイ部が吊金車と接する面に対し垂直方向の幅D2が略同等であり、前記吊金車が通過する前記第2カマレス金具と前記延線用工具の第3連結軸を介した連結部位の溝幅D3と前記吊金車の直径D4の関係がD3<D4であることを特徴とする、請求項1に記載のプレハブカマレス工法用連結金具。 Width D1 in the direction perpendicular to the surface where the clevis portion or eye portion of the first camares fitting or the second camares fitting contacts the hanging wheel, and the clevis portion or the eye portion of the second camares fitting or the wire extension tool. The width D2 in the direction perpendicular to the surface in contact with the hoisting wheel is substantially the same, and the second camares fitting through which the hoisting wheel passes and the groove of the connecting portion via the third connecting shaft of the wire drawing tool 2. The connecting fitting according to claim 1, wherein the relationship between the width D3 and the diameter D4 of the suspension wheel is D3<D4. 鉄塔間に架設される送電線の延線及び緊線に使用するためのプレハブカマレス工法用連結金具であって、
前記プレハブカマレス工法用連結金具は、カマレス金具、延線用工具、及び緊線用工具からなり、
前記カマレス金具は、長手方向の一端部が圧縮クランプの端部に第1連結軸を介して回動自在に連結され、長手方向のもう一方の端部が第2連結軸を介して前記延線用工具と回動自在に連結され、
前記延線用工具は、長手方向のもう一方の端部が、もうひとつの延線用工具と第3連結軸を介して回動自在に連結され、
前記もうひとつの延線用工具は、長手方向のもう一方の端部がワイヤコネクタの端部に第4連結軸を介して回動自在に連結され、
前記緊線用工具は、前記カマレス金具に緊線用工具取付部の取付孔を介して回動自在に連結されることを特徴とするプレハブカマレス工法用連結金具。
A connection fitting for prefabricated Kamares construction method for use in extension and tightening of transmission lines installed between steel towers,
The connection fitting for the prefabricated Kamares construction method comprises a Kamares fitting, a wire drawing tool, and a wire tightening tool,
One longitudinal end of the camares metal fitting is rotatably connected to an end of the compression clamp via a first connecting shaft, and the other longitudinal end is connected to the extension wire via a second connecting shaft. is rotatably connected to the tool for
The wire drawing tool is rotatably connected at the other end in the longitudinal direction to another wire drawing tool via a third connecting shaft,
The other wire drawing tool is rotatably connected at the other end in the longitudinal direction to the end of the wire connector via a fourth connecting shaft,
A connecting fitting for a prefabricated kamares construction method, wherein the wrench tool is rotatably connected to the kamares fitting through an attachment hole of a wringing tool attachment portion.
前記カマレス金具又は前記延線用工具のクレビス部又はアイ部が吊金車と接する面に対し垂直方向の幅D1と、隣接する前記延線用工具同士のクレビス部又はアイ部が吊金車と接する面に対し垂直方向の幅D2が略同等であり、前記吊金車が通過する前記延線用工具とワイヤコネクタの第4連結軸を介した連結部位の溝幅D3と前記吊金車の直径D4の関係がD3<D4であることを特徴とする、請求項3に記載のプレハブカマレス工法用連結金具。 The width D1 in the direction perpendicular to the surface where the camares fitting or the clevis portion or eye portion of the wire drawing tool contacts the hanging wheel, and the clevis portion or eye portion of the adjacent wire drawing tools is the hanging wheel. The width D2 in the direction perpendicular to the contact surface is substantially the same. 4. The connecting fitting for prefabricated camares construction method according to claim 3, characterized in that the relation of the diameter D4 is D3<D4. 前記カマレス金具は、直角クレビス、直角クレビスリンク、角度クレビス、角度クレビスリンク、直角リンク、及び角度リンクからなる群から選択される請求項1乃至4のいずれか1項に記載のプレハブカマレス工法用連結金具。 5. The prefabricated camares construction method according to any one of claims 1 to 4, wherein said camares fitting is selected from the group consisting of a right angle clevis, a right angle clevis link, an angle clevis, an angle clevis link, a right angle link, and an angle link. connecting fittings. 前記プレハブカマレス工法用連結金具を用いて、鉄塔間に送電線を延線及び緊線する工法であって、前記プレハブカマレス工法用連結金具の一部である前記延線用工具は、延線作業時に使用し、緊線作業前に取り外すことが可能である、鉄塔間に送電線を延線及び緊線する工法。 A method for drawing and tightening a power transmission line between steel towers using the connection fitting for the prefabricated Kamares method, wherein the wire-drawing tool, which is a part of the connection fitting for the prefabricated Kamares method, A construction method for extending and tightening transmission lines between steel towers, which is used during line work and can be removed before tightening work.
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