JP2004080845A

JP2004080845A - Metal fitting for installing suspension wire to pole, and connecting metal fitting, and suspension wire extension method using them

Info

Publication number: JP2004080845A
Application number: JP2002233796A
Authority: JP
Inventors: Osamu Takai; 高井　修; Koichi Sugasawa; 菅沢　宏一; Koji Kajimoto; 梶本　光二; Kazuki Sato; 佐藤　一樹
Original assignee: TEKKU C KK; C Tech Corp; Meishin Electric Co Inc
Current assignee: TEKKU C KK; C Tech Corp; Meishin Electric Co Inc
Priority date: 2002-08-09
Filing date: 2002-08-09
Publication date: 2004-03-11

Abstract

<P>PROBLEM TO BE SOLVED: To enable the rise of safety and decrease of used hardware and the reduction of management cost by reducing the number of times of climbing a pole thereby enabling the shortening of a construction period and the reduction of construction cost. <P>SOLUTION: A metal fitting for cramping a suspension wire to a pole, which consists of a metal fitting body 1, a suspension wire assembling metal fitting A comprising a fixing member 2 being attached to it and movable to be displaced from a large aperture state being held temporarily to allow a suspension wire W to be passed in a pass part 13 surrounded by the body and a fixing plate part 1b to a small aperture state to catch and fix the suspension wire W, and a fixing means 3, is attached at a specified position of the upper part of a utility pole D, and a rope for extension to which the suspension wire W is connected is passed through the pass part 13 in large aperture state, and the rope E for extension is hauled in and also the suspension wire W is passed through the pass part 13, and the suspension wire W is kept tense, and the pass part 13 is displaced as it is into the small aperture state by fixing means 3, thereby catching and fixing the suspension wire W. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明は、多数の電柱間に通信線を架設する際、その通信線を吊下げるために同じく前記各電柱間に架設される吊線を所定位置に挟着固定する吊線装柱金具とこれを使用した吊線延設工法に関するものである。
【０００２】
【従来の技術】
例えば、住宅地などに立設される多数の電柱間に通信線を架設する場合があるが、通常、通信線を架設するには、各電柱間にメッセンジャワイヤである吊線を架設しておき、この吊線に通信線を直接巻付けるか、または多数のケーブルハンガーを掛止しこれらケーブルハンガーに挿通して架設するようにしている。このように、通信線を架設するためには、あらかじめ各電柱間に吊線を架設しておく必要がある。
【０００３】
そこで、従来の吊線延設工法について説明すると、まず、始端柱から終端柱までの各電柱上部の所定位置に最終的に吊線を挟着固定するための吊線装柱金具を取付ける。通常、吊線装柱金具は、電柱の外周面に金属製のバンドを介して取り付けるか、腕金に取り付けるようにしており、このため、これら取付ける個所によって形状・構造が異なる二タイプが有る。例えば、電柱の外周面に取付けられる吊線装柱金具Ｂは、図９に示すように電柱側へ取付ける縦固定部ａと吊線Ｗを固定するための横固定部ｂとから側面Ｌ字型に成形される金具本体ｃと、金具本体ｃに取付けられる挟着杆ｄと、ナットｉと、から構成される。前記横固定部ｂの先端に上方へ屈曲する止片部ｅが設けられ、この止片部ｅに上端縁が開放する螺子挿通用の縦溝ｆが設けられている。また、横固定部ｂには、前記縦溝ｆに対向位置させて長孔ｇが開設されている。
【０００４】
挟着杆ｄは、くの字状に折曲して成形され、一端に頭部、他端側に螺子部ｈが設けられる。そして、前記長孔ｇに下側から挟着杆ｄを挿通すると共に先端側の螺子部ｈを縦溝ｆに介入し、この状態で、止片部ｅの外側に突出する螺子部ｈにナットｉを螺締して挟着杆ｄが金具本体ｃに取付けられる。そこで、前記横固定部ｂと止片部ｅと挟着杆ｄとで囲まれる挿通部ｊに吊線Ｗが挿通され、ナットｉを螺締めすることにより吊線Ｗが挟着固定されるようになっている。
【０００５】
このようにして、各電柱上部に吊線装柱金具Ｂが取付けられた後、金車と呼ばれる滑車を取り付ける。各電柱上部に吊線装柱金具Ｂと金車とが取付けられた状態で、吊線の先端に撚り戻し機構を有する接続金具を介して接続された延線用ロープを各電柱上部の金車に挿通しつつ手繰り寄せては各電柱毎に吊線を架渉する。次に、前記各電柱において、吊線を金車から吊線装柱金具Ｂの横固定部ｂ上面に載せ替えて挿通部ｊに挿通する。また、この際、金車は取り外される。この状態で、吊線を全体的に緊線状態（一定張力で張り渡された状態）に引っ張る。最後に、各吊線装柱金具Ｂでナットｉを螺締して吊線Ｗをしっかりと挟着固定する。これにより、各電柱間に吊線Ｗが張架され、この吊線に通信線を直接巻き付けるか、または多数のケーブルハンガーを掛止しこれらケーブルハンガーに通信線を挿通して架設している。
【０００６】
【発明が解決しようとする課題】
前記のように金車を使用するのは、前記挿通部ｊのスペースが比較的狭いことから、前記撚り戻し機構を有する接続金具の送り込みが難しく、また、挿通部ｊに挿通する際に吊線Ｗの表面に多くのキズが付き易いためである。従来の吊線延設工法では、主に吊線装柱金具Ｂを各電柱上部の所定位置に取り付けるとき、金車を各電柱上部の所定位置に取り付けるとき、吊線を金車から吊線装柱金具に載せ替えるとき、吊線装柱金具に吊線を挟着固定するとき、など各電柱につき昇柱回数が多く、このため、工期が長引くばかりか施工コストも高くなる。また、昇柱回数が多いことから、その分危険頻度も高くなっている。更に、金車を使用するなど使用機材も多く、しかも、吊線装柱金具は電柱用と腕金用との二タイプを必要とすることから、管理コストが高くつくという課題があり、これら解決策が強く望まれている。
【０００７】
そこで、本発明は上記課題に鑑みてなされたもので、電柱用と腕金用とに共用できるようにして使用機材を少なくでき管理コストも低廉になし得る吊線装柱金具及び接続金具と、この吊線装柱金具を使用することにより、昇柱回数を減らすことができて工期の短縮並びに施工コストの削減を可能とし、安全性の向上を図ることもできる吊線延設工法と、を提供することを目的とするものである。
【０００８】
【課題を解決するための手段】
かかる目的を達成するため、本発明に係る吊線装柱金具は、吊線を固定するための固定板部を備えた金具本体と、前記固定板部に取り付けられ、前記固定板部とで囲われる挿通部が前記吊線を挿通し得るように一時保持される大口径状態から該吊線を挟着固定し得る小口径状態へと変位するように動作可能な固定部材と、前記固定部材により前記吊線を挟着固定するための固定手段と、から構成される。
【０００９】
この際、前記固定板部及び固定部材の外周面に、前記吊線を前記挿通部に円滑かつ傷付けずに挿通するための被覆層を設けることが好ましい。
【００１０】
また、吊線装柱金具の具体的構成は、吊線を固定するため一対の通孔が開設される固定板部を備えた金具本体と、前記通孔にＵ字状をなすフック部を挿通して前記固定板部に取り付けられ、前記フック部と前記固定板部とで囲われる挿通部が前記吊線を挿通し得るように一時保持される大口径状態から該吊線を挟着固定し得る小口径状態へと変位するように動作可能な固定部材と、前記フック部の基端部から延設された螺子軸部に螺合し前記固定部材により前記吊線を挟着固定するナットと、から構成される。
【００１１】
この場合も、前記固定板部及び固定部材の外周面に、前記吊線を前記挿通部に円滑かつ傷付けずに挿通するための合成樹脂製の被覆層を設け、また、前記挿通部が前記吊線を挿通し得る大口径状態に一時保持され得るように、前記被覆層の一部を前記一方の通孔内に臨ませ、かつ、前記フック部の先端部を前記通孔内の被覆層に当接させるようにすることが好ましい。
【００１２】
吊線の先端部と延線用ロープの基端部とを接続する接続金具は、端末金具と該端末金具に巻き回される複数本の巻付けグリップとからなり、端末金具は、前記大口径状態の挿通部に挿通できる外径を有した棒状に成形され、その先端部には、先端側が二股状に成形されると共にその間に短杆が着脱自在に差し渡され、かつ、前記端末金具の中心軸線と直交する面内で自在に回転する接続部材を取着した構成からなる。
【００１３】
また、吊線延設工法は、電柱上部の所定位置に、固定板部を備えた金具本体と、前記固定板部に取り付けられ、前記固定板部とで囲われる挿通部が吊線を挿通し得るように一時保持される大口径状態から該吊線を挟着固定し得る小口径状態へと変位するように動作可能な固定部材と、前記固定部材により前記吊線を挟着固定するための固定手段と、からなる吊線装柱金具を取り付け、前記大口径状態にある挿通部に前記吊線を接続した延線用ロープを挿通し、前記延線用ロープを手繰り寄せると共に前記吊線を前記挿通部に挿通し、前記吊線を緊線状態に保持し、前記固定手段によって前記挿通部をそのまま前記小口径状態へ変位させることにより前記吊線を挟着固定するようにした。
【００１４】
前記吊線を吊線装柱金具の挿通部に挿通させて架渉でき、しかも固定手段によりそのまま吊線を挟着固定できるようにしているので、従来の金車が不用になり各電柱における昇柱回数もその分減少（実際には二回減る。）される。よって、工期の短縮が可能となるばかりか施工コストが削減でき、安全性の向上を図ることもできる。更には、金車が不用になることから使用機材を少なくでき、しかも、吊線装柱金具が電柱用と腕金用とに共用でき、結果的に一タイプで済むことから、管理コストも低廉になし得る。
【００１５】
【発明の実施の形態】
以下、本発明に係る吊線装柱金具並びに接続金具及びこれらを使用した吊線延設工法の実施の形態について説明する。通常、吊線装柱金具は電柱の外周面または腕金とのいずれかに取付けられるが、この実施の形態に係る吊線装柱金具は、各電柱の外周面と腕金とのいずれの個所にも共用して取付けられるようになっており、その一例として電柱の外周面に金属製のバンドを介して吊線装柱金具が取付けられる場合を示す。図１は、本発明に係る吊線装柱金具の分解斜視図である。この吊線装柱金具Ａは、金属製からなり、吊線Ｗを固定するための金具本体１と該金具本体１に取り付けられる固定部材２と該固定部材２により吊線Ｗを挟着固定するための固定手段としてのナット３とからなる。
【００１６】
前記金具本体１は、電柱Ｄ側に取付けられる取付板部１ａとこれと連続し吊線Ｗを固定する固定板部１ｂとにより、これら取付板部１ａと固定板部１ｂとのなす角が約６０度となる側面Ｖ字状に成形される。そして、電柱Ｄの外周面には屈曲部が下に位置するようにして取付板部１ａを当接し、また、図示は省略するが、腕金にはその下面に前記屈曲部が上になるようにして取付板部１ａを当接することにより、吊線装柱金具Ａが取付けられる。前記取付板部１ａと固定板部１ｂは共に両側縁がハの字状に折り曲げられ折曲強度が高められるようになっている。
【００１７】
前記取付板部１ａにボルト装通孔４が貫設されている。一方、固定板部１ｂに、長手方向に沿って所定の間隔離し内側の通孔５ａと外側の通孔５ｂとが貫設されている。固定板部１ｂの裏側には、該固定板部１ｂと平行な隔片６が一体に設けられ、該隔片６に前記外側の通孔５ｂと対向位置して同軸状にボルト挿通孔７が貫設されている。また、固定板部１ｂの外周面に前記内・外側の通孔５ａ，５ｂ間を覆うようにして合成樹脂製の被覆層８が形成される。ただ、外側の通孔５ｂとボルト挿通孔７は完全に空いているが、内側の通孔５ａのみは前記被覆層８の一部８ａによりその半分が窪んだ状態で覆われている。
【００１８】
固定部材２は、Ｕ字状のフック部２ａとその基端部から延設され、外周面に螺子溝９が刻設された螺子軸部２ｂとからなる。また、前記フック部２ａの外周面全体に、前記固定板部１ｂと同様に合成樹脂製の被覆層１０が形成されている。そして、外側の通孔５ｂに螺子軸部２ｂをその上側から挿通すると共にフック部２ａの先端部１１を内側の通孔５ａに臨ませた状態で、固定部材２が支持される。このフック部２ａの先端部１１は、前記通孔５ａ内に張り出される被覆層８の一部８ａにより僅かに嵌入するにすぎず、前記先端部１１にその軸方向から一定以上の力を加えない限り、その一部８ａが破損されフック部２ａが通孔５ａ内に進入し得ないようになっている。
【００１９】
そして、図２に示すように前記フック部２ａの先端部１１が、通孔５ａ内の被覆層８の一部８ａに当接した状態で、螺子軸部２ｂに下側からワッシャ１２を介してナット３を緩く螺合させておく。これにより、前記フック部２ａと固定板部１ｂとで囲われる挿通部１３が成形され、しかも、この状態は、挿通部１３が前記吊線Ｗを挿通し得る大口径状態となる。また、この状態は、前記フック部２ａの先端部１１が通孔５ａ内の被覆層８の一部８ａに当接した状態で一時保持されることになる。しかも、前記フック部２ａの先端部１１が通孔５ａ内から抜け出るようなこともない。
【００２０】
一方、前記ナット３を強く螺締めすると、フック部２ａの先端部１１で被覆層８の一部８ａが破断され、更に、フック部２ａが通孔５ａ内に進入し、挿通部１３が吊線Ｗを挟着固定し得る小口径状態へと変位する。これにより、フック部２ａと固定板部１ｂとの外側面間の距離が縮まって吊線Ｗがしっかりと挟着固定されるようになっている。前記フック部２ａと固定板部１ｂの外側面に合成樹脂製の被覆層８，１０を成形するようにしたが、これはその間に挿通される吊線Ｗが円滑にかつ傷つかないようにして摺動し得るようにするためであり、同様な作用・効果を得るものであれば、他の素材のものであっても良い。
【００２１】
図３は、撚り戻し機構を有する接続金具の分解斜視図、図４は同使用状態の斜視図である。この撚り戻し機構を有する接続金具１４は、各電柱Ｄ間に吊線Ｗを架渉するため、吊線Ｗの先端部と先導用の延線用ロープＥの基端部とを接続するためのものであり、端末金具１４ａと複数本の巻付けグリップ１４ｂとからなる。端末金具１４ａは、金属製であって断面円形の棒状に成形され、前記大口径状態の挿通部１３に挿通できる外径に設定されている。そして、その先端部に太径部１５が一体に設けられ、更に、その先端側に同径の接続部材１６が取着される。この接続部材１６は、その先端側が二股状に成形されると共にその間に短杆１７が着脱自在に差し渡され、端末金具１４ａの中心軸線と直交する面内で自在に回転するようになっている。前記二股状部に螺子孔１６ａと透孔１６ｂが対向して設けられる。また、短杆１７にはその先端外周面に螺子溝が刻設され、この短杆１７は前記二股状の接続部材１６における一方の透孔１６ｂを介して他方の螺子孔１６ａに螺合することにより着脱自在に取り付けられる。一方、各巻付けグリップ１４ｂは、複数本の線材を帯状に成形すると共にこれを螺旋状に巻き回して成形される。
【００２２】
一方、延線用ロープＥの基端には、その外周面にゴム被覆層２１が一体に設けられると共に、その後端面に金属棒体２２が設けられ、更に、その後端面に、前記と同様に螺子孔と透孔が対向して設けられる二股状の接続部１６が一体に設けられる。この接続部１６は、前記端末金具１４ａ側のものと異なり回転はしない。また、短杆１７には、その先端外周面に螺子溝が刻設され、この短杆１７は前記と同様に二股状の接続部１６における一方の透孔を介し螺子孔に螺合して着脱自在に取り付けられる。
【００２３】
１８は前記延線用ロープＥの基端側の二股状の接続部１６に取り付けられるジョイントであり、一側の取付片１９ａと他側の取付片１９ｂとが互いに投影して直交するように成形されており、各取付片１９ａ，１９ｂに透孔２０が設けられている。そして、ジョイント１８における一方の取付片１９ａに設けられた透孔２０に前記短杆１７を挿通した状態で、この短杆１７を二股状の接続部材１６に螺装することにより、ジョイント１８が接続される。
【００２４】
そこで、前記端末金具１４ａの後端に吊線Ｗの先端部を当接させ、前記複数の巻付けグリップ１４ｂを順に端末金具１４ａから吊線Ｗに至るまで巻回する。そして、前記ジョイント１８における他方の取付片１９ｂに設けられた透孔２０に前記端末金具１４ａ側の短杆１７を挿通した状態で、この短杆１７を二股状の接続部材１６に螺装する。これにより、図４に示すように延線用ロープＥの基端部に吊線Ｗの先端部が回転自在かつ屈曲自在に接続されることになる。吊線Ｗとしては、例えばその長さが６００ｍのものが選ばれる。
【００２５】
前記端末金具１４ａに接続部材１６が回転自在に設けられるのは、吊線Ｗが複数本の線材を撚って成形されしかも通常ドラムに巻いてあることから、延線用ロープＥにより吊線Ｗを手繰り寄せる場合、吊線Ｗがねじれて吊線Ｗの送り作業がスムーズにできないばかりか、ともすると吊線が切断してしまう事態を回避するためである。また、前記端末金具１４ａに延線用ロープＥ側の接続部材１６が屈曲自在に設けられるのは、吊線装柱金具Ａの挿通部１３から引き出される延線用ロープＥの方向が常に直線的ではなく曲がる場合もあり、このような場合にも延線用ロープＥと吊線Ｗとの接続部が容易に曲がり得て、挿通部１３で引っ掛かり吊線Ｗを手繰り寄せることができないような事態を回避するためである。
【００２６】
以下に、本発明に係る吊線延設工法について説明する。まず、始端柱から終端柱に亘り昇柱して各電柱Ｄ上部の所定位置に吊線装柱金具Ａを取り付ける。図５は吊線装柱金具Ａが電柱Ｄに取付けられた状態を示す。すなわち、吊線装柱金具Ａには、フック部２ａの先端部１１が通孔５ａ内の被覆層８の一部８ａに当接した状態で、螺子軸部２ｂに下側からワッシャ１２を介してナット３が緩く螺締めしてある。そして、電柱Ｄの外周面に巻回した金属製バンドＫから外側へ突出するボルトＶを取付板部１ａのボルト挿通孔４に挿通する。更に、外側からボルトＶにナット２１を螺子締めして吊線装柱金具Ａが電柱Ｄにしっかりと取り付けられる。
【００２７】
次に、この状態で昇柱して、接続金具１４を介して吊線Ｗと接続される延線用ロープＥを、図５に示すように前記大口径状態の挿通部１３に始端柱から終端柱へ向けて挿通する。次に、前記延線用ロープＥを終端柱側へ手繰り寄せると共に図６に示すように吊線Ｗを前記挿通部１３に挿通する。この際、前記フック部２ａと固定板部１ｂの外周面には合成樹脂製の被覆層８，１０が設けられていることから、吊線Ｗとの耐摩擦性に優れ吊線Ｗがスムーズに移送される。しかも、吊線Ｗの外表面に傷がつくようなこともない。このようにして吊線Ｗをドラム（図示せず。）から引き出しつつ各電柱Ｄにつき同様な作業を繰り返す。なお、前記被覆層８，１０は、金具本体１、固定部材２が接触する吊線Ｗにキズを付けないような材質であれば、必要はない。
【００２８】
そして、各電柱Ｄ間に吊線Ｗが架渉された後、前記吊線Ｗを全体的に緊張させて緊線状態に保持する。最後に、昇柱して図７、図８に示すように各電柱Ｄにつき前記ナット３をしっかりと螺締めする。これによりフック部２ａの先端部１１が通孔５ａ内の被覆層８の一部８ａを破砕して進入し、挿通部１３が小口径状態に変位し、フック部２ａの内側であって略中央部に設けられ金属地が露出する切欠凹部２３が吊線Ｗの外周面に当接して該吊線Ｗを挟着固定することになる。
なお、本実施の形態では、電柱の外周面に吊線装柱金具Ａを取付けた場合を説明したが、腕金に吊線装柱金具Ａを取り付けた場合も同様にして吊線Ｗの送り作業ができる。
【００２９】
このように、本発明は、吊線を吊線装柱金具の挿通部に挿通させて架渉でき、しかも、固定手段によりそのまま挟着固定できるようにしているので、従来の金車が不用になり、その分昇柱回数も従来に比べ減少（二回減る。）する。
【００３０】
【発明の効果】
以上、説明したように本発明は、固定板部を備えた金具本体と、固定板部に取り付けられ、この固定板部とで囲われる挿通部が吊線を挿通し得るように一時保持される大口径状態から吊線を挟着固定し得る小口径状態へと変位するように動作可能な固定部材と、吊線を挟着固定するための固定手段と、からなる吊線装柱金具を使用し、前記大口径状態にある挿通部に接続金具を介して吊線を接続した延線用ロープを挿通し、延線用ロープを手繰り寄せると共に吊線を挿通部に挿通し、吊線を緊線状態に保持し、固定手段により挿通部をそのまま小口径状態に変位させることにより吊線を挟着固定するようにしたので、吊線を吊線装柱金具に支持したまま電柱間に架渉でき、これにより、従来の金車が不要になって昇柱回数を減らすことができる。
また、工期の短縮並びに施工コストの削減が可能となり、安全性の向上を図ることもできる。更に、金車が不用になることから使用機材を少なくでき、しかも、吊線装柱金具が電柱用と腕金用とに共用でき、結果的に一タイプで済むことから、管理コストも低廉になし得る。
【００３１】
接続金具は、端末金具と該端末金具に巻き回される複数本の巻付けグリップとからなり、端末金具は、大口径状態の挿通部に挿通できる外径を有した棒状に成形され、その先端部には、先端側が二股状に成形されると共にその間に短杆が着脱自在に差し渡される接続部材を取着してなるので、前記巻付けグリップにより吊線がしっかりと固着でき作業中に外れるようなことがほとんどなく、しかも、大口径状態の挿通部にも簡単に挿通でき、作業が能率良く行なえる。
【００３２】
また、フック部と固定板部の外周面に被覆層を設けるようにすれば、吊線との耐摩擦性に優れ、吊線を挿通部に挿通する際、吊線がスムーズに移送され、しかも、吊線の外表面が傷つくようなことがないという効果がある。
【図面の簡単な説明】
【図１】吊線装柱金具の分解斜視図。
【図２】同組立てた状態の側面断面図。
【図３】接続金具の分解斜視図。
【図４】同使用状態の斜視図。
【図５】吊線装柱金具に延線用ロープが挿通される状態を示す斜視図。
【図６】吊線装柱金具に吊線が挿通される状態を示す斜視図。
【図７】吊線装柱金具に吊線が挟着固定されている状態を示す斜視図。
【図８】同側面断面図。
【図９】従来の吊線装柱金具の分解斜視図。
【符号の説明】
１　　　　　　　　　　金具本体
１ｂ　　　　　　　　　固定板部
２　　　　　　　　　　固定部材
２ａ　　　　　　　　　フック部
２ｂ　　　　　　　　　螺子軸部
３　　　　　　　　　　固定手段（ナット）
５ａ　　　　　　　　　内側の通孔
５ｂ　　　　　　　　　外側の通孔
８　　　　　　　　　　被覆層
８ａ　　　　　　　　　被覆層の一部
１０　　　　　　　　　被覆層
１３　　　　　　　　　挿通部
Ａ　　　　　　　　　　吊線装柱金具
Ｄ　　　　　　　　　　電柱
Ｅ　　　　　　　　　　延線用ロープ
Ｗ　　　　　　　　　　吊線[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a suspension line mounting metal fitting which is used to suspend a communication line between a plurality of telephone poles and also to fix the suspension line between the telephone poles at a predetermined position to suspend the communication line. It is related to the suspended wire extension method.
[0002]
[Prior art]
For example, communication lines may be erected between a number of telephone poles erected in a residential area or the like.In general, to lay communication lines, a messenger wire, which is a messenger wire, is erected between the telephone poles. A communication line is directly wound around the suspension line, or a number of cable hangers are hung and inserted into these cable hangers so as to be erected. As described above, in order to install the communication line, it is necessary to previously install a suspension line between the utility poles.
[0003]
Therefore, the conventional extension method of the stranded wire will be described. First, a stranded wire mounting bracket for finally sandwiching and fixing the stranded wire is attached at a predetermined position above each utility pole from the starting end column to the end column. Normally, the hanging wire mounting bracket is attached to the outer peripheral surface of the utility pole via a metal band or attached to an arm bar. For this reason, there are two types having different shapes and structures depending on the mounting location. For example, as shown in FIG. 9, a suspension wire mounting bracket B attached to the outer peripheral surface of a utility pole is formed into a side L-shape from a vertical fixing portion a attached to the utility pole side and a horizontal fixing portion b for fixing the suspension wire W. , A clamping rod d attached to the metal body c, and a nut i. At the end of the horizontal fixing portion b, a stopper piece e that is bent upward is provided, and the stopper piece e is provided with a vertical groove f for screw insertion whose upper end edge is open. A long hole g is formed in the horizontal fixing portion b so as to face the vertical groove f.
[0004]
The holding rod d is bent and formed in a U-shape, and has a head at one end and a screw portion h at the other end. Then, the holding rod d is inserted into the elongated hole g from below, and the screw portion h on the tip side is interposed in the vertical groove f. In this state, the nut h is inserted into the screw portion h protruding outside the stopper piece e. By screwing i, the clamping rod d is attached to the fitting main body c. Therefore, the suspension line W is inserted into the insertion portion j surrounded by the lateral fixing portion b, the stopper piece e, and the clamping rod d, and the suspension line W is clamped and fixed by screwing the nut i. ing.
[0005]
In this way, after the hanging wire mounting bracket B is attached to the upper part of each utility pole, a pulley called a wheel is attached. In a state where the hanging wire mounting bracket B and the wheel are attached to the upper part of each telephone pole, the extension rope connected to the leading end of the hanging wire via a connecting metal having a twist-back mechanism is inserted through the wheel above the telephone pole. While pulling it up, hang up a suspension line for each telephone pole. Next, in each of the electric poles, the suspension wire is replaced from the wheel truck on the upper surface of the horizontal fixing portion b of the suspension wire mounting bracket B and inserted into the insertion portion j. At this time, the gold wheel is removed. In this state, the suspension line is pulled to a tight state (a state of being stretched with a constant tension) as a whole. Finally, the nut i is screwed in with each of the hanging wire column fittings B, and the hanging wire W is firmly clamped and fixed. As a result, the suspension line W is stretched between the utility poles, and the communication line is directly wound around the suspension line, or a number of cable hangers are hung, and the communication lines are inserted through these cable hangers and installed.
[0006]
[Problems to be solved by the invention]
The reason for using the wheel as described above is that it is difficult to feed the connection fitting having the untwisting mechanism because the space of the insertion portion j is relatively small, and the hanging wire W is inserted into the insertion portion j. This is because many scratches are likely to be formed on the surface. In the conventional suspension wire extension method, when the suspension wire mounting bracket B is mainly attached to a predetermined position above each utility pole, when a wheel wheel is installed at a predetermined position above each utility pole, the suspension wire is mounted on the suspension wire mounting bracket from the wheelbarrow. For example, when replacing or fixing a suspension wire to a suspension wire mounting bracket, the number of times of ascending poles for each electric pole is large, so that not only the construction period is prolonged, but also the construction cost is increased. In addition, since the number of times of ascending poles is large, the frequency of danger increases accordingly. Furthermore, there are many equipments to be used, such as using a wheeled car, and since there are two types of hanging wire pole fittings, one for utility poles and one for arm-bars, there is a problem that the management cost is high. Is strongly desired.
[0007]
Therefore, the present invention has been made in view of the above problems, and a hanging wire mounting bracket and a connecting metal fitting that can be used for utility poles and arm-brings so that less equipment is required and management cost can be reduced. To provide a suspension wire extension method capable of reducing the number of times of ascending poles, shortening the construction period and reducing the construction cost by using the suspension wire mounting bracket, and improving safety. The purpose is.
[0008]
[Means for Solving the Problems]
In order to achieve the object, a hanging wire mounting bracket according to the present invention includes a fitting main body having a fixing plate portion for fixing a hanging wire, and a through-hole mounted on the fixing plate portion and surrounded by the fixing plate portion. A fixing member operable to be displaced from a large diameter state in which the portion is temporarily held so that the hanging wire can be inserted therethrough to a small diameter state in which the hanging line can be clamped and fixed; And fixing means for fixing.
[0009]
At this time, it is preferable to provide a coating layer on the outer peripheral surfaces of the fixing plate portion and the fixing member for smoothly penetrating the suspension wire into the insertion portion without damaging it.
[0010]
Further, the specific configuration of the hanging wire mounting bracket is such that a U-shaped hook portion is inserted into the fitting body having a fixing plate portion in which a pair of through holes are opened to fix the hanging wire. From a large diameter state in which an insertion portion attached to the fixing plate portion and surrounded by the hook portion and the fixing plate portion is temporarily held so that the suspension line can be inserted, a small diameter state in which the suspension line can be clamped and fixed. A fixing member operable to be displaced toward the base member, and a nut screwed into a screw shaft portion extending from a base end of the hook portion and screwing and fixing the suspension wire by the fixing member. .
[0011]
Also in this case, on the outer peripheral surfaces of the fixing plate portion and the fixing member, a covering layer made of a synthetic resin is provided for smoothly penetrating the suspending wire into the insertion portion without damaging the penetrating portion. Part of the coating layer faces the one of the through holes so that it can be temporarily held in a large diameter state that can be inserted, and the tip of the hook portion contacts the coating layer in the through hole. It is preferable to make it.
[0012]
The connection fitting for connecting the distal end of the hanging wire and the base end of the extension wire rope includes a terminal fitting and a plurality of winding grips wound around the terminal fitting, and the terminal fitting is in the large diameter state. It is formed into a rod shape having an outer diameter that can be inserted into the insertion portion, and the front end portion is formed into a forked shape, and a short rod is detachably inserted between the end portions, and the center of the terminal fitting is formed. It has a configuration in which a connecting member that freely rotates in a plane perpendicular to the axis is attached.
[0013]
In addition, the extension method of the suspension line is such that, at a predetermined position on the upper part of the utility pole, a fitting main body having a fixed plate portion, and an insertion portion attached to the fixed plate portion and surrounded by the fixed plate portion can insert the suspension line. A fixing member operable to be displaced from a large-diameter state temporarily held to a small-diameter state capable of pinching and fixing the suspension line, and fixing means for pinching and fixing the suspension line by the fixing member, Attaching a hanging wire mounting bracket consisting of, extending the rope for connecting the extending wire to the insertion portion in the large-diameter state, pulling the extending rope by hand and inserting the hanging wire into the insertion portion, The suspension line is held in a tight line state, and the insertion part is displaced to the small diameter state by the fixing means as it is, thereby clamping and fixing the suspension line.
[0014]
The hanging wire is inserted into the insertion portion of the hanging wire mounting bracket so that the hanging wire can be bridged, and furthermore, since the hanging wire can be pinched and fixed by the fixing means, the conventional metal wheel is unnecessary, and the number of times of ascending poles at each telephone pole is also increased. It is reduced by that amount (actually reduced twice). Therefore, not only the construction period can be shortened, but also the construction cost can be reduced, and safety can be improved. Furthermore, the use of a metal wheel is unnecessary, so less equipment can be used, and moreover, the hanging wire mounting bracket can be used for both the utility pole and the armrest, resulting in a single type, thus reducing the management cost. I can do it.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of a hanging wire mounting bracket and a connecting metal fitting according to the present invention and a hanging wire extending method using the same will be described. Normally, the suspension wire mounting bracket is attached to either the outer peripheral surface of the telephone pole or the arm bar, but the suspension wire mounting bracket according to this embodiment is provided at any position of the outer peripheral surface of each telephone pole and the arm bar. An example is shown in which a hanging wire mounting bracket is mounted on the outer peripheral surface of a utility pole via a metal band as an example. FIG. 1 is an exploded perspective view of a hanging wire column fitting according to the present invention. The hanging wire mounting bracket A is made of metal and has a metal fitting body 1 for fixing the hanging wire W, a fixing member 2 attached to the metal fitting body 1, and a fixing for clamping and fixing the hanging wire W by the fixing member 2. And a nut 3 as a means.
[0016]
The metal fitting body 1 has an angle between the mounting plate 1a and the fixing plate 1b of about 60 by the mounting plate 1a attached to the utility pole D side and the fixing plate 1b which is continuous with the fixing plate 1b and fixes the hanging wire W. It is formed into a V-shaped side surface. Then, the mounting plate portion 1a abuts on the outer peripheral surface of the utility pole D such that the bent portion is located below, and although not shown, the bent portion is formed on the lower surface of the arm bar so as to be upward. Then, the hanging wire mounting bracket A is mounted by abutting the mounting plate 1a. Both sides of the mounting plate portion 1a and the fixing plate portion 1b are bent in a C-shape, so that the bending strength is increased.
[0017]
A bolt mounting hole 4 is formed through the mounting plate 1a. On the other hand, an inner through-hole 5a and an outer through-hole 5b are provided through the fixed plate portion 1b so as to be separated from each other by a predetermined distance in the longitudinal direction. On the back side of the fixed plate portion 1b, a spacer 6 parallel to the fixed plate portion 1b is provided integrally, and a bolt insertion hole 7 is coaxially formed in the spacer 6 so as to face the outer through hole 5b. It is penetrated. Further, a coating layer 8 made of synthetic resin is formed on the outer peripheral surface of the fixed plate portion 1b so as to cover between the inner and outer through holes 5a and 5b. However, the outer through-hole 5b and the bolt insertion hole 7 are completely open, but only the inner through-hole 5a is covered with a part 8a of the coating layer 8 in a state where half thereof is depressed.
[0018]
The fixing member 2 includes a U-shaped hook portion 2a and a screw shaft portion 2b extending from a base end thereof and having a screw groove 9 formed on an outer peripheral surface thereof. Further, a covering layer 10 made of a synthetic resin is formed on the entire outer peripheral surface of the hook portion 2a, similarly to the fixing plate portion 1b. Then, the fixing member 2 is supported in a state where the screw shaft portion 2b is inserted into the outer through hole 5b from above and the distal end portion 11 of the hook portion 2a faces the inner through hole 5a. The tip portion 11 of the hook portion 2a only slightly fits into a part 8a of the coating layer 8 that protrudes into the through-hole 5a, and applies a force equal to or more than a predetermined value to the tip portion 11 from its axial direction. Unless otherwise, a portion 8a of the hook portion 2a is broken so that the hook portion 2a cannot enter the through hole 5a.
[0019]
Then, as shown in FIG. 2, in a state where the tip 11 of the hook 2a is in contact with a part 8a of the coating layer 8 in the through hole 5a, the screw shaft 2b is inserted from below through the washer 12 through the washer 12. The nut 3 is loosely screwed. As a result, the insertion portion 13 surrounded by the hook portion 2a and the fixed plate portion 1b is formed, and this state is a large-diameter state in which the insertion portion 13 can insert the hanging wire W. In addition, this state is temporarily held in a state where the tip 11 of the hook 2a is in contact with a part 8a of the coating layer 8 in the through hole 5a. Moreover, the tip 11 of the hook 2a does not fall out of the through hole 5a.
[0020]
On the other hand, when the nut 3 is strongly screwed, a part 8a of the coating layer 8 is broken at the tip 11 of the hook 2a, the hook 2a enters the through hole 5a, and the insertion portion 13 Is displaced to a small-diameter state in which can be pinched and fixed. As a result, the distance between the outer surfaces of the hook portion 2a and the fixing plate portion 1b is reduced, and the suspension line W is firmly clamped and fixed. The coating layers 8, 10 made of synthetic resin are formed on the outer surfaces of the hook portion 2a and the fixing plate portion 1b, but this is done so that the suspension line W inserted therebetween is smoothly and not damaged. Other materials may be used as long as the same operation and effect can be obtained.
[0021]
FIG. 3 is an exploded perspective view of a connection fitting having a untwisting mechanism, and FIG. 4 is a perspective view of the same use state. The connection fitting 14 having the untwisting mechanism is for connecting the leading end of the suspension wire W and the base end of the leading wire rope E for leading the suspension wire W between the utility poles D. There is a terminal fitting 14a and a plurality of winding grips 14b. The terminal fitting 14a is made of metal, is formed into a rod shape having a circular cross section, and is set to have an outer diameter that can be inserted into the insertion portion 13 in the large-diameter state. A large diameter portion 15 is integrally provided at the distal end, and a connecting member 16 having the same diameter is attached to the distal end. The connecting member 16 has a distal end formed in a forked shape and a short rod 17 removably inserted therebetween, so that the connecting member 16 can freely rotate in a plane orthogonal to the central axis of the terminal fitting 14a. . A screw hole 16a and a through hole 16b are provided in the forked portion so as to face each other. The short rod 17 is provided with a screw groove on the outer peripheral surface of the distal end thereof. The short rod 17 is screwed into the other screw hole 16a through one through hole 16b of the forked connecting member 16. It can be detachably attached. On the other hand, each of the winding grips 14b is formed by forming a plurality of wires into a band shape and spirally winding the wires.
[0022]
On the other hand, a rubber coating layer 21 is integrally provided on the outer peripheral surface of the base end of the rope E, and a metal rod 22 is provided on a rear end surface thereof. A forked connecting portion 16 in which the hole and the through hole are provided to face each other is provided integrally. The connecting portion 16 does not rotate unlike the terminal fitting 14a. The short rod 17 is provided with a thread groove on the outer peripheral surface of the distal end thereof. The short rod 17 is screwed into the screw hole through one through hole in the bifurcated connection portion 16 in the same manner as described above. Can be attached freely.
[0023]
Reference numeral 18 denotes a joint attached to the bifurcated connection portion 16 on the base end side of the wire rope E. The joint 18 is formed so that the mounting piece 19a on one side and the mounting piece 19b on the other side project perpendicular to each other. The mounting holes 19a and 19b are provided with through holes 20. The short rod 17 is screwed into the bifurcated connecting member 16 in a state where the short rod 17 is inserted into the through hole 20 provided in one of the mounting pieces 19a of the joint 18, so that the joint 18 is connected. Is done.
[0024]
Then, the front end of the hanging wire W is brought into contact with the rear end of the terminal fitting 14a, and the plurality of winding grips 14b are sequentially wound from the terminal fitting 14a to the hanging wire W. Then, with the short rod 17 on the side of the terminal fitting 14a inserted into the through hole 20 provided in the other mounting piece 19b of the joint 18, the short rod 17 is screwed into the forked connecting member 16. As a result, as shown in FIG. 4, the distal end of the suspension wire W is rotatably and flexibly connected to the base end of the extension rope E. As the suspension wire W, for example, one having a length of 600 m is selected.
[0025]
The connecting member 16 is rotatably provided on the terminal fitting 14a because the hanging wire W is formed by twisting a plurality of wires and is usually wound around a drum. This is because, in the case of pulling in, the hanging wire W is twisted and the feeding operation of the hanging wire W cannot be performed smoothly. In addition, the connection member 16 on the extension rope E side is provided in the terminal fitting 14a in a bendable manner because the direction of the extension rope E pulled out from the insertion portion 13 of the hanging wire mounting bracket A is not always linear. In such a case, the connecting portion between the extension rope E and the suspension line W can be easily bent, and the situation where the insertion portion 13 cannot be caught and the suspension line W cannot be dragged is avoided. That's why.
[0026]
Hereinafter, the method of extending the suspension line according to the present invention will be described. First, the poles A are attached to the predetermined positions above the electric poles D by ascending from the start end columns to the end columns. FIG. 5 shows a state in which the hanging wire mounting bracket A is attached to the utility pole D. That is, in the hanging wire column fitting A, the screw shaft portion 2b is connected to the screw shaft portion 2b from below via the washer 12 in a state where the tip portion 11 of the hook portion 2a is in contact with a part 8a of the coating layer 8 in the through hole 5a. The nut 3 is loosely screwed. Then, a bolt V projecting outward from a metal band K wound around the outer peripheral surface of the telephone pole D is inserted into the bolt insertion hole 4 of the mounting plate portion 1a. Further, the nut 21 is screwed to the bolt V from the outside, and the hanging wire mounting bracket A is securely attached to the utility pole D.
[0027]
Next, in this state, the ascending pole is connected to the extension rope E, which is connected to the suspension wire W via the connection fitting 14, and the extending rope 13 is inserted into the insertion portion 13 in the large-diameter state from the starting end column to the end post as shown in FIG. Insert it towards. Next, the extension rope E is pulled toward the terminal pole side, and the hanging wire W is inserted through the insertion portion 13 as shown in FIG. At this time, since the coating layers 8 and 10 made of synthetic resin are provided on the outer peripheral surfaces of the hook portion 2a and the fixing plate portion 1b, the suspension line W is smoothly transferred with excellent friction resistance with the suspension line W. You. In addition, the outer surface of the suspension wire W is not damaged. In this way, the same operation is repeated for each utility pole D while pulling out the suspension wire W from the drum (not shown). The coating layers 8 and 10 are not necessary if they are made of a material that does not damage the hanging wire W with which the metal fitting body 1 and the fixing member 2 come into contact.
[0028]
Then, after the suspension wire W is laid between the utility poles D, the suspension wire W is tensioned as a whole to maintain the tension state. Finally, the column 3 is raised and the nut 3 is firmly screwed on each utility pole D as shown in FIGS. As a result, the tip portion 11 of the hook portion 2a crushes a part 8a of the coating layer 8 in the through hole 5a and enters, and the insertion portion 13 is displaced into a small diameter state. The notch recessed portion 23 provided in the portion and exposing the metal ground comes into contact with the outer peripheral surface of the suspension line W to clamp and fix the suspension line W.
In this embodiment, the case where the hanging wire mounting bracket A is attached to the outer peripheral surface of the telephone pole has been described. However, even when the hanging wire mounting bracket A is attached to the arm, the work of feeding the hanging wire W can be similarly performed. .
[0029]
As described above, the present invention allows the hanging wire to be inserted into the insertion portion of the hanging wire mounting bracket so that the hanging wire can be bridged, and furthermore, can be pinched and fixed as it is by the fixing means, so that the conventional metal wheel becomes unnecessary. As a result, the number of ascending columns is reduced (twice) as compared with the conventional method.
[0030]
【The invention's effect】
As described above, according to the present invention, there is provided a bracket main body having a fixing plate portion, and a fitting portion attached to the fixing plate portion, and an insertion portion surrounded by the fixing plate portion is temporarily held so that a suspension line can be inserted. The above-mentioned large-sized mounting member comprises a fixing member operable to be displaced from a diameter state to a small-diameter state capable of pinching and fixing a suspension line, and fixing means for clamping and fixing the suspension line. Insert the extension rope with the hanging wire connected to the insertion part in the diameter state via the connection bracket, pull the extension rope by hand, insert the suspension wire into the insertion part, hold the suspension line in a tight state, and fix it By means of displacing the insertion part as it is to the small diameter state by means, the suspension line is pinched and fixed, so that the suspension line can be bridged between telephone poles while being supported by the suspension wire mounting bracket, and this makes it possible to No longer required .
In addition, the construction period can be shortened and the construction cost can be reduced, and safety can be improved. Furthermore, the use of a metal wheel is unnecessary, so less equipment can be used. In addition, since the hanging wire mounting bracket can be used for both electric poles and arms, only one type can be used, resulting in lower management costs. obtain.
[0031]
The connection fitting is composed of a terminal fitting and a plurality of winding grips wound around the terminal fitting, and the terminal fitting is formed in a rod shape having an outer diameter that can be inserted into the large-diameter insertion portion, and has a tip. In the part, the distal end side is formed in a forked shape, and a connecting member between which a short rod is detachably inserted is attached, so that the suspension wire can be firmly fixed by the winding grip so that it can be detached during work. It can be inserted easily into the insertion part in the large-diameter state, and work can be performed efficiently.
[0032]
Also, if a coating layer is provided on the outer peripheral surfaces of the hook portion and the fixing plate portion, friction resistance with the suspension line is excellent, and when the suspension line is inserted into the insertion portion, the suspension line is smoothly transferred, and furthermore, the suspension line There is an effect that the outer surface is not damaged.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a hanging wire mounting bracket.
FIG. 2 is a side sectional view of the assembled state.
FIG. 3 is an exploded perspective view of a connection fitting.
FIG. 4 is a perspective view of the same use state.
FIG. 5 is a perspective view showing a state where the extension rope is inserted through the hanging wire column fitting.
FIG. 6 is a perspective view showing a state in which the hanging wire is inserted into the hanging wire mounting bracket.
FIG. 7 is a perspective view showing a state in which the hanging wire is clamped and fixed to the hanging wire mounting bracket.
FIG. 8 is a side sectional view of the same.
FIG. 9 is an exploded perspective view of a conventional hanging wire mounting bracket.
[Explanation of symbols]
Reference Signs List 1 bracket body 1b fixing plate 2 fixing member 2a hook 2b screw shaft 3 fixing means (nut)
5a Inside through-hole 5b Outside through-hole 8 Covering layer 8a Part of covering layer 10 Covering layer 13 Insertion part A Suspension wire fitting D Utility pole E Extension rope Rope W Suspension wire

Claims

A large-diameter state in which a fitting main body including a fixing plate portion for fixing a suspension line, and an insertion portion attached to the fixing plate portion and temporarily surrounded by the fixing plate portion so that the suspension line can be inserted therethrough. A fixing member operable to be displaced to a small-diameter state capable of pinching and fixing the suspension line, and fixing means for clamping and fixing the suspension line by the fixing member. Mounting hardware.

2. The hanging wire column fitting according to claim 1, wherein a coating layer is provided on an outer peripheral surface of the fixing plate portion and the fixing member so that the hanging wire can be smoothly inserted into the insertion portion without being damaged. 3.

A metal fitting body having a fixing plate portion in which a pair of through holes are opened to fix the suspension line, and a U-shaped hook portion inserted through the through hole and attached to the fixing plate portion; A fixing member operable to be displaced from a large-diameter state in which an insertion portion surrounded by the fixing plate portion is temporarily held so that the suspension line can be inserted into a small-diameter state in which the suspension line can be clamped and fixed; And a nut screwed into a screw shaft extending from a base end of the hook and fixedly holding the suspension by the fixing member.

A coating layer made of a synthetic resin is provided on the outer peripheral surfaces of the fixing plate and the fixing member so that the hanging wire can be smoothly and without penetrating the insertion portion, and the insertion portion can penetrate the hanging wire. A portion of the coating layer faces the one of the through-holes, and the tip of the hook portion is brought into contact with the coating layer in the through-hole so that the coating layer can be temporarily held in the caliber state. The hanging wire mounting bracket according to claim 3.

A connection fitting for connecting a leading end of a suspension wire and a base end of a rope for extension, comprising a terminal fitting and a plurality of winding grips wound around the terminal fitting, wherein the terminal fitting comprises It is formed in a rod shape having an outer diameter that can be inserted through the insertion portion in a bore state, and a distal end portion thereof is formed into a forked shape, and a short rod is detachably inserted therebetween, and the terminal fitting is formed. A connection member rotatably mounted in a plane orthogonal to a central axis of the connection member.

A large-diameter state in which a fitting body provided with a fixing plate portion at a predetermined position above the telephone pole, and an insertion portion attached to the fixing plate portion and temporarily held so that an insertion portion surrounded by the fixing plate portion can pass through a suspension line. A fixing member operable to be displaced to a small-diameter state capable of pinching and fixing the suspension line, and fixing means for pinching and fixing the suspension line by the fixing member. The extension rope connected to the hanging wire is inserted through the insertion portion in the large-diameter state, the extension wire rope is pulled by hand, and the hanging wire is inserted through the insertion portion, and the hanging wire is held in a tight line state. The suspension line is extended and fixed by displacing the insertion portion to the small-diameter state by the fixing means.