JP3657704B2

JP3657704B2 - Safety hand for work at height

Info

Publication number: JP3657704B2
Application number: JP21682796A
Authority: JP
Inventors: 勝木村
Original assignee: 宣真工業株式会社
Priority date: 1996-07-29
Filing date: 1996-07-29
Publication date: 2005-06-08
Anticipated expiration: 2016-07-29
Also published as: JPH1051920A

Description

【０００１】
【発明の属する技術分野】
この発明は、主として、架空電線、柱上機器、ガイシ等にからまった凧や凧糸、ビニール、洗濯物、枯枝等の飛来物や、鳥の巣などを除去するのに使用される高所作業用セイフティハンドに関するものである。
【０００２】
【従来の技術】
従来は、棒状の操作棒の先端部に設けられたハサミ状の挟持部材が、操作棒の基端部に設けられたトリガーの握持操作により開閉可能とされてなるものである。そして、この従来のものは、一方の手で操作棒を握持しつつ、他方の手で前記トリガーを操作するものであった。
【０００３】
【発明が解決しようとする課題】
しかしながら、従来のものでは、物を掴んだ状態で保持しておくことができなかった。つまり、トリガーを握っている間は、挟持部材は物を挟持しているが、トリガーの握持を止めると挟持部材が開いて物が落ちてしまうという問題があった。
ところで、高所作業において、活線等から飛来物を除去した場合には、除去した物を直接下に落とすのは大変危険であるので、作業者の手元に飛来物を引き寄せることが必要である。このため、従来のものでは、一方の手でトリガーを握持しつつ操作棒を手前に引いて他方の手で飛来物を持つ必要があり、操作棒の長さが長いと、このようなことができないといった問題があった。よって、操作棒を長尺にできなかった。
この発明は、これらの課題を解決するためになされたものである。
【０００４】
【課題を解決するための手段】
上記課題を解決するために、この発明に係る高所作業用セイフティハンドは、操作棒の先端部に設けられた第１挟持部材と第２挟持部材とが、操作棒の基端部に設けられた駆動部材の操作により開閉可能とされてなるセイフティハンドであって、前記操作棒は、複数の外側筒部材（４，５）が伸縮可能に、且つ任意の位置で固定可能に嵌挿されてなり、この操作棒内には、複数の内側筒部材（７，８）が設けられており、隣接する先端側の内側筒部材（８）と基端側の内側筒部材（７）とは、先端側の内側筒部材（８）の内面が端面多角形とされると共に、基端側の内側筒部材の先端に、先端側の内側筒部材（８）の内面に適合する端面多角形に形成された駆動用ブロック部材が設けられ、駆動用ブロック部材は先端側の内側筒部材（８）の内面内に、軸方向には進退可能で相互には回転不可能に設けられ、最も基端側の内側筒部材の基端は、前記駆動部材に固定され、前記操作棒の先端部に、前記第２挟持部材が枢支された前記第１挟持部材が固設され、前記第２挟持部材の基端部に、前記枢支軸を中心として第２挟持部材を回動させる引ボルト部材が設けられ、前記操作棒に対して軸方向の移動が阻止されると共に操作棒に対して回動可能に設けられた回転ナット部材に、前記引ボルト部材が進退可能に螺合され、前記回転ナット部材は、操作棒内に設けられた最も先端側の内側筒部材の先端に固設されており、前記操作棒の基端部に、内側筒部材を介して前記回転ナット部材を回動させる駆動部材が設けられてなることを特徴とする高所作業用セイフティハンドである。
また、好ましくは、上記構成に加えて、前記操作棒及び前記駆動部材は、絶縁性材料から形成されてなることを特徴とする高所作業用セイフティハンドである。
【０００５】
【発明の実施の形態】
以下、この発明の高所作業用セイフティハンド１について、さらに詳細に説明する。
図１は、この発明の高所作業用セイフティハンド１の一実施例を示す斜視図であり、図２は、その縦断面図である。また、図３及び図４は、それぞれ図２におけるＡ−Ａ断面図とＢ−Ｂ端面図である。
この実施例のセイフティハンド１は、伸縮式の操作棒２の先端に、飛来物等１００を挟持するための挟持部材３が開閉可能に設けられてなる。
操作棒２は、第１筒部材４に第２筒部材５が伸縮自在に嵌挿されてなり、両部材４，５は任意の位置で固定することができる構成とされている。
【０００６】
操作棒２の基端側の第１筒部材４は、円筒形状の細長いパイプからなり、その基端部には、第１筒部材４よりもやや大径の駆動部材６が、第１筒部材４と同心に配置されている。
この駆動部材６は、円筒形状のパイプからなり、その先端側の開口部には、短円柱形状の回転リング部材９が嵌合されている。この回転リング部材９の径方向中央部には、軸部材１０が、駆動部材６から先端側に延出して設けられている。なお、回転リング部材９とこれに嵌合された軸部材１０とは、駆動部材６を径方向に貫通して設けられる係止ボルト１１によって駆動部材６に固定されており、これにより、駆動部材６と軸部材１０とが一体回転するよう構成されている。
【０００７】
一方、第１筒部材４の基端側の開口部には、短円柱形状の止リング部材１２が嵌合されており、この止リング部材１２は第１筒部材４に複数個の止ネジ１３によって固定されている。
止リング部材１２の径方向中央部には、軸方向に貫通穴が形成されており、この貫通穴には前記軸部材１０が貫通して挿通されている。なお、軸部材１０は、止リング部材１２に対して回動可能に挿通されている。
軸部材１０の先端部は、止リング部材１２から更に先端側に延出されており、その延出部には、第１筒部材４に緩挿された第３筒部材７の基端部が固設されている。すなわち、第３筒部材７の基端側の開口部に、軸部材１０の先端部が嵌合され、両部材７，１０はロールピン１４によって一体化されている。
【０００８】
第３筒部材７は、第１筒部材４よりも小径の円筒形状の細長いパイプからなり、例えば第１筒部材４の直径の約三分の一から四分の一程度の大きさのものが使用される。第３筒部材７は、第１筒部材４の軸心に沿って配置されており、第１筒部材４の先端部にまで達する長さとされている。
第３筒部材７の先端部には、断面四角形状の駆動用ブロック部材１５が第１筒部材４よりも先端側に延出して設けられている。
駆動用ブロック部材１５は、先端側のブロック部１５ａが軸方向に細長い直方体形状に形成され、その断面は第２筒部材５に緩嵌された第４筒部材８の内径に適合した大きさの正方形状に形成されてなる。また、駆動用ブロック部材１５の基端側の取付部１５ｂは、第３筒部材７の内径に適合した円柱形状に形成されている。このような構成であるから、駆動用ブロック部材１５は、基端側の取付部１５ｂが第３筒部材７の先端側開口部に嵌合されて固設されている。なお、駆動用ブロック部材１５及び第３筒部材７は、第４筒部材８内に、進退可能に嵌挿されている。
【０００９】
第１筒部材４の先端部には、緊締部材１６が設けられており、この緊締部材１６の先端側ネジ部１６ｂには締付ナット１７が進退可能に螺合されている。
緊締部材１６は、略円筒形状に形成され、基端側の拡径部１６ａに第１筒部材４の先端部が嵌合され、且つ接着されて固定されている。緊締部材１６の先端部は、例えば図４に示すように、径方向に対向した位置に、軸方向に延びる切欠き１６ｄ，１６ｄが形成されている。これにより、緊締部材１６の先端部は、径方向に弾性変形可能とされており、締付ナット１７の操作により縮径或いは拡径可能である。
また、緊締部材１６の先端部は、内径が第２筒部材５の外径と略適合する大きさとされており、また外径部が前記拡径部１６ａから軸方向先端側に延びてネジ部１６ｂが形成された後、このネジ部１６ｂよりも先端側は、先端に行くに従ってやや縮径したテーパー部１６ｃとされている。
【００１０】
なお、緊締部材１６及び第１筒部材４に嵌挿される第２筒部材５は、基端側外径部がテープを巻かれる等して拡径されており、第２筒部材５を第１筒部材４から十分に引き出した際には、この拡径部が緊締部材１６の拡径部１６ａの内側先端面に係止されることにより、第２筒部材５の第１筒部材４からの抜け止めが図られている。
締付ナット１７は、略円筒形状で、外径が緊締部材１６の拡径部１６ａの外径とほぼ等しく形成される一方、内径が緊締部材１６の先端部の外周部とほぼ等しい形状に形成されてなる。すなわち、締付ナット１７は、基端部に軸方向に延びるネジ穴１７ａが形成され、そのネジ穴１７ａより先端側が、先端側に行くに従って僅かに縮径するテーパー穴１７ｂとされてなる。そして、この締付ナット１７は、ネジ穴１７ａを緊締部材１６のネジ部１６ｂに進退可能に螺合されている。
【００１１】
操作棒２の先端側の第２筒部材５は、円筒形状の細長いパイプからなり、その外径は第１筒部材４の内径に適合する大きさとされている。第２筒部材５は、前記緊締部材１６及び締付ナット１７を貫通して設けられている。よって、緊締部材１６に対して締付ナット１７をねじ込むと、締付ナット１７のテーパー穴１７ｂが緊締部材１６の先端部を縮径することにより、緊締部材１６の先端部で第２筒部材５を緊締して、第１筒部材４に対して第２筒部材５を固定することができる。
第２筒部材５の径方向中央部には、軸方向に沿って、断面四角形状の角パイプからなる第４筒部材８が設けられている。この第４筒部材８は、内径が前記第３筒部材７の先端部に設けられた駆動用ブロック部材１５のブロック部１５ａと適合する大きさの正方形状に形成されている。
【００１２】
第４筒部材８の先端部には、回転ナット部材１８が固設され、この回転ナット部材１８は、スラスト受リング１９に支持されている。
回転ナット部材１８は、略円柱形状で、先端部の外径は第２筒部材５の内径よりも僅かに小径とされている。また、回転ナット部材１８の基端部は、二段階に縮径されて軸受部１８ｂと、第４筒部材８への固定部１８ｃとが形成されている。
回転ナット部材１８の固定部１８ｃは、第４筒部材８の内径と適合する大きさの断面四角形状に形成されており、この固定部１８ｃが第４筒部材８の先端側開口部に嵌合されて止ネジ２０によって固定されている。
【００１３】
スライド受リング１９は、厚肉円筒形状に形成されてなり、止ネジ２１によって第２筒部材５に固定されている。そして、このスライド受リング１９には、回転ナット部材１８が貫通して設けられ、回転ナット部材１８の軸受部１８ｂが回動可能に支持されている。
回転ナット部材１８の先端部には、ネジ穴１８ａが先端側に開口して形成されており、このネジ穴１８ａには、引ボルト部材２２が進退可能に螺合されている。
引ボルト部材２２は、円柱形状で、基端側に、回転ナット部材１８のネジ穴１８ａに螺合されるボルト部２２ａが形成されている。また、引ボルト部材２２の先端部には、板状に先端側に突出する突出部２２ｂが形成されている。そして、この突出部２２ｂには、リンク部材２３を介して第２挟持部材２５が連結される。
リンク部材２３は、両端部に略コ字形状溝２３ａ，２３ｂが形成されてなる。
【００１４】
第２挟持部材２５は、軸方向に沿って延びると共に基端部に僅かに下方に延びる差込部２５ｂが形成されて、全体として略Ｌ字形状に形成されている。なお、差込部２５ｂ先端側の連結部２５ｃの板厚は、第２挟持部材２５先端側の挟持部２５ａよりも小さく形成されており、リンク部材２３の先端側のコ字形状溝２３ｂに適合する厚さとされている。
第２挟持部材２５を枢支する第１挟持部材２４は、先端側の挟持部２４ａが第２挟持部材２５の挟持部２５ａと略同一形状とされると共に、基端部が二股分かれして保持部２４ｂが形成されている。この保持部２４ｂの溝の幅は、第２挟持部材２５の差込部２５ｂの幅寸法と適合する大きさとされている。
第１挟持部材２４は、基端部２４ｃが筒状に形成されており、その外径が第２筒部材５の内径に適合する大きさとされる一方、内径が引ボルト部材２２及びリンク部材２３よりも若干大径に形成されている。第１挟持部材２４は、基端側の筒状部２４ｃが第２筒部材５の先端側の開口部に嵌合されて、複数個の止ネジ２６によって固定されて設けられる。なお、回転ナット部材１８と第１挟持部材２４の筒状部２４ｃとの間には、スペーサーリング２７が、引ボルト部材２２に緩嵌されて配置されている。
【００１５】
第２挟持部材２５は、差込部２５ｂを第１挟持部材２４の保持部２４ｂに差し込まれた状態で、保持部２４ｂの先端側に、枢支軸２８により枢支されている。また、第２挟持部材２５は、連結部２５ｃがリンク部材２３先端側のコ字形状溝２３ｂに差し込まれてピン２９で連結されている。そして、このリンク部材２３の基端側のコ字形状溝２３ａには引ボルト部材２２の突出部２２ｂが差し込まれてピン３０で連結されている。
第１挟持部材２４と第２挟持部材２５の各挟持部２４ａ，２５ａの対向する部分には、ギザギザに形成されたゴム板２４Ａ，２５Ａを設けることが好ましい。このゴム板２４Ａ，２５Ａは、第１挟持部材２４と第２挟持部材２５とを閉じた状態では、図２に示すように、互いにかみ合うよう構成されている。
なお、高所作業用セイフティハンド１は、第１筒部材４や第２筒部材５等の主要部品が、例えばポリプロピレン等の絶縁性材料から形成されている。また、第１筒部材４の適当な位置には、作業の安全のために、それ以上先端側を持って作業しないようにするための鍔部材３１が設けられている。
【００１６】
次に、この実施例の高所作業用セイフティハンド１の使用について説明する。
図５は、この発明のセイフティハンド１の使用状態を示す斜視図である。
この図に示すように、この発明のセイフティハンド１は、主として活線用セイフティハンドとして使用されるものである。例えば、配電関係として、バケット車の上から、配電線や柱上機器、ガイシ等に引っ掛かった凧や凧糸、ビニール、洗濯物、枯枝等の飛来物や、鳥の巣などの除去に使用される。また、送電関係として、塔上から、送電線やジャンパー線、ガイシ、アークホーン、鉄塔アームに引っ掛かった各種飛来物や鳥の巣などの除去に使用される。
【００１７】
使用に際しては、まず第１筒部材４に対して第２筒部材５を伸縮させて、使い易い長さとする。これには、緊締部材１６に対して締付ナット１７を緩めて、第１筒部材４から第２筒部材５を任意の長さだけ引き出した後、緊締部材１６に対して締付ナット１７を締め込んで、緊締部材１６の先端部で第２筒部材１７を緊締することにより行われる。なお、第１筒部材４と第２筒部材５との伸縮に伴って、第３筒部材７及びこの先端部に設けられた駆動用ブロック部材１５が第４筒部材８内を進退することとなる。
次に、第１筒部材４に対して、駆動部材６を周方向に回転させることにより、第１挟持部材２４に対して第２挟持部材２５を適当な角度だけ開ける。すなわち、第１筒部材４に対して駆動部材６を回転させることにより、軸部材１０と第３筒部材７を介して駆動用ブロック部材１５を連動回転させ、この駆動用ブロック部材１５の回転を第４筒部材８に伝達して回転ナット部材１８を回転させ、回転ナット部材１８に螺合された引ボルト部材２２を回転ナット部材１８から螺退させることにより、引ボルト部材２２と第２挟持部材２５との間に設けられたリンク部材２３により、第２挟持部材２５を枢支軸２８を中心として回転させることにより行われる。
【００１８】
そして、両挟持部材２４，２５の挟持部２４ａ，２５ａの間に、電線等に引っ掛かったビニール袋などの飛来物等１００を位置させた状態で、駆動部材６を逆回転させて両挟持部材２４，２５を閉じて飛来物等１００を挟持して電線等から除去する。すなわち、挟持部材２４，２５を開くときとは逆方向に駆動部材６を回転をさせることにより、回転ナット部材１８に対して引ボルト部材２２を螺進させて、リンク部材２３を基端側に引くことにより、第２挟持部材２５を枢支軸２８を中心に回転させて挟持部材２４，２５を閉じる。なお、両挟持部材２４，２５の対向部には、ギザギザのゴム板２４Ａ，２５Ａがかみ合うよう設けられているので、飛来物等１００は確実にセイフティハンド１の挟持部材２４，２５に挟持される。
ところで、第２挟持部材２５の枢支軸２８を中心とした回動は、引ボルト部材２２及び第２挟持部材２５にピン結合されたリンク部材２３を介して行われるので、リンク部材２３がピン２９，３０を中心に適宜揺動することにより、挟持部材２４，２５の開閉がスムーズに行われる。
【００１９】
挟持部材２４，２５で飛来物等１００を挟持した状態では、駆動部材６から手を離しても、挟持部材２４，２５が開くおそれはない。よって、挟持部材２４，２５に挟持された飛来物等１００を手元まで引き寄せることができるので、塔やバケット上の高所作業においても、飛来物等１００を落下させたりするおそれがなく、作業を安全に行うことができる。しかも、操作棒２等の主要部品が絶縁性材料から形成されているので、活線に引っ掛かった飛来物等１００の除去に対しても安全に作業を行うことができる。
なお、作業終了後には、挟持部材３を閉じると共に、第１筒部材４に対して第２筒部材５を嵌挿して操作棒２を短くすることにより、セイフティハンド１をコンパクトに収納することができる。よって、保管や携帯に便利である。
【００２０】
なお、この発明の高所作業用セイフティハンド１は、上記実施例の構成に限らず、適宜変更可能である。
例えば、第１筒部材４と第２筒部材５とを任意の位置で固定するためのストッパーは、前記実施例のように、緊締部材１６と締付ナット１７とからなる構成に限られない。
また、操作棒２は、伸縮可能な構成が好ましいが、伸縮不可能なものであってもよく、この場合、軸部材１０の先端部に直接、回転ナット部材１８を設ければよい。逆に、前記実施例では、第１筒部材４と第２筒部材５との２段階に伸縮可能な構成としたが、３段階以上に伸縮可能な構成としてもよいことは勿論である。
さらに、第３筒部材７から第４筒部材８に回転を伝達するために、前記実施例では第４筒部材８と駆動用ブロック部材１５とを四角形状としたが、その他の多角形等で構成してもよい。
【００２１】
【発明の効果】
以上詳述したように、この発明の高所作業用セイフティハンドによれば、物を掴んだ状態で保持しておくことができるので、セイフティハンドを長尺にしても、飛来物等を挟持部材で挟持した状態で、手元に飛来物を引き寄せることができる。よって、高所作業においても、安全に飛来物を除去することができる。
また、操作棒を伸縮自在な構成とすれば、携帯や保管に場所をとらないだけでなく、作業に応じて使い易い長さにすることができるので、作業を効率よく且つ安全に行うことができる。
さらに、セイフティハンドを絶縁性材料により形成すれば、活線に対する作業でも安全に行うことができる。
【図面の簡単な説明】
【図１】この発明の高所作業用セイフティハンドの一実施例を示す斜視図である。
【図２】図１のセイフティハンドの縦断面図である。
【図３】図２のＡ−Ａ断面図である。
【図４】図２のＢ−Ｂ端面図である。
【図５】図１のセイフティハンドの使用状態を示す斜視図である。
【符号の説明】
１高所作業用セイフティハンド
２操作棒
３挟持部材
４第１筒部材
５第２筒部材
６駆動部材
７第３筒部材
８第４筒部材
１０軸部材
１５駆動用ブロック部材
１６緊締部材
１７締付ナット
１８回転ナット部材
２２引ボルト部材
２３リンク部材
２４第１挟持部材
２５第２挟持部材
２８枢支軸[0001]
BACKGROUND OF THE INVENTION
This invention is mainly used to remove flying objects such as overhead wires, pole equipment, insulators, flying objects such as vinyl, laundry and dead branches, and bird's nests. This is related to safety hands for office work.
[0002]
[Prior art]
Conventionally, a scissor-shaped holding member provided at the distal end portion of a rod-shaped operation rod is opened and closed by a gripping operation of a trigger provided at a proximal end portion of the operation rod. And this conventional thing operates the said trigger with the other hand, holding an operation stick with one hand.
[0003]
[Problems to be solved by the invention]
However, the conventional device could not hold the object in a gripped state. That is, while holding the trigger, the holding member holds an object. However, when the holding of the trigger is stopped, the holding member opens and the object falls.
By the way, when flying objects are removed from a live line or the like in high-altitude work, it is very dangerous to drop the removed objects directly down, so it is necessary to draw the flying objects closer to the operator. . For this reason, in the conventional one, it is necessary to hold the trigger with one hand while pulling the operating rod forward and hold the flying object with the other hand. There was a problem that could not. Therefore, the operating rod cannot be made long.
The present invention has been made to solve these problems.
[0004]
[Means for Solving the Problems]
In order to solve the above-described problems, a safety work hand for working at high places according to the present invention includes a first clamping member and a second clamping member provided at the distal end portion of the operation rod, provided at the proximal end portion of the operation rod. A safety hand that can be opened and closed by operating a drive member, wherein the operating rod is inserted in such a manner that a plurality of outer cylindrical members (4, 5) can be expanded and contracted and can be fixed at any position. In the operation rod, a plurality of inner cylindrical members (7, 8) are provided, and the adjacent inner cylindrical member (8) on the distal end side and the inner cylindrical member (7) on the proximal end side are The inner surface of the inner cylindrical member (8) on the distal end side is formed into a polygonal end surface, and is formed at the distal end of the inner cylindrical member on the proximal end side into an end surface polygon that matches the inner surface of the inner cylindrical member (8) on the distal end side. The driving block member is provided, and the driving block member is provided on the inner cylindrical member (8) on the distal end side. In the plane, axially to each other can advance and retreat is provided non-rotatably, most proximal end of the inner tubular member of the base end side is fixed to the drive member, the distal end portion of the operation rod, the The first clamping member on which the second clamping member is pivotally supported is fixed, and a pulling bolt member for rotating the second clamping member about the pivot shaft is provided at a base end portion of the second clamping member. The pulling bolt member is screwed so as to be able to advance and retreat to a rotating nut member which is prevented from moving in the axial direction with respect to the operating rod and is rotatable with respect to the operating rod. Is fixed to the distal end of the innermost cylindrical member provided in the operating rod, and a driving member that rotates the rotating nut member to the proximal end portion of the operating rod via the inner cylindrical member This is a safety hand for working at a high place, characterized in that it is provided.
Preferably, in addition to the above-described configuration, the operating rod and the driving member are made of an insulating material.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the safety work 1 for high place work according to the present invention will be described in more detail.
FIG. 1 is a perspective view showing an embodiment of the safety hand 1 for high-altitude work according to the present invention, and FIG. 2 is a longitudinal sectional view thereof. 3 and 4 are an AA sectional view and a BB end view in FIG. 2, respectively.
In the safety hand 1 of this embodiment, a holding member 3 for holding a flying object 100 or the like is provided at the tip of an extendable operation rod 2 so as to be opened and closed.
The operation rod 2 is configured such that the second cylinder member 5 is telescopically inserted into the first cylinder member 4, and the members 4 and 5 can be fixed at arbitrary positions.
[0006]
The first cylinder member 4 on the proximal end side of the operation rod 2 is formed of a cylindrical elongated pipe, and a drive member 6 having a slightly larger diameter than the first cylinder member 4 is disposed at the proximal end portion of the first cylinder member. 4 is arranged concentrically.
The drive member 6 is formed of a cylindrical pipe, and a short cylindrical rotary ring member 9 is fitted in the opening on the tip side. A shaft member 10 is provided to extend from the drive member 6 toward the distal end side in the radial center portion of the rotating ring member 9. The rotating ring member 9 and the shaft member 10 fitted to the rotating ring member 9 are fixed to the driving member 6 by a locking bolt 11 provided through the driving member 6 in the radial direction. 6 and the shaft member 10 are configured to rotate integrally.
[0007]
On the other hand, a short cylindrical retaining ring member 12 is fitted in the opening on the proximal end side of the first tubular member 4, and the retaining ring member 12 is attached to the first tubular member 4 with a plurality of set screws 13. It is fixed by.
A through hole is formed in the axial direction central portion of the retaining ring member 12 in the axial direction, and the shaft member 10 is inserted through the through hole. Note that the shaft member 10 is inserted in a rotatable manner with respect to the retaining ring member 12.
The distal end portion of the shaft member 10 extends further to the distal end side from the retaining ring member 12, and the proximal end portion of the third tubular member 7 that is loosely inserted into the first tubular member 4 is formed in the extended portion. It is fixed. That is, the distal end portion of the shaft member 10 is fitted into the opening portion on the proximal end side of the third cylindrical member 7, and both the members 7 and 10 are integrated by the roll pin 14.
[0008]
The third cylindrical member 7 is formed of a cylindrical elongated pipe having a smaller diameter than the first cylindrical member 4. For example, the third cylindrical member 7 has a size of about one third to one fourth of the diameter of the first cylindrical member 4. used. The third cylinder member 7 is disposed along the axis of the first cylinder member 4 and has a length that reaches the tip of the first cylinder member 4.
A driving block member 15 having a quadrangular section is provided at the distal end portion of the third cylindrical member 7 so as to extend from the first cylindrical member 4 toward the distal end side.
The driving block member 15 is formed in a rectangular parallelepiped shape in which the block portion 15a on the distal end side is elongated in the axial direction, and the cross section thereof has a size that matches the inner diameter of the fourth cylinder member 8 that is loosely fitted to the second cylinder member 5. It is formed in a square shape. Further, the attachment portion 15 b on the proximal end side of the drive block member 15 is formed in a columnar shape that matches the inner diameter of the third cylindrical member 7. Due to such a configuration, the driving block member 15 is fixedly provided by fitting the attachment portion 15b on the proximal end side to the opening on the distal end side of the third cylindrical member 7. The driving block member 15 and the third cylinder member 7 are inserted into the fourth cylinder member 8 so as to be able to advance and retract.
[0009]
A tightening member 16 is provided at the distal end portion of the first cylindrical member 4, and a tightening nut 17 is threadably engaged with the distal end side screw portion 16 b of the tightening member 16 so as to advance and retreat.
The tightening member 16 is formed in a substantially cylindrical shape, and the distal end portion of the first cylindrical member 4 is fitted into the diameter-expanded portion 16a on the proximal end side, and is bonded and fixed. As shown in FIG. 4, for example, the distal end portion of the tightening member 16 is formed with notches 16d and 16d extending in the axial direction at positions facing each other in the radial direction. As a result, the distal end portion of the tightening member 16 can be elastically deformed in the radial direction, and can be contracted or expanded by operating the tightening nut 17.
The distal end portion of the tightening member 16 has an inner diameter that is substantially the same as the outer diameter of the second cylindrical member 5, and the outer diameter portion extends from the enlarged diameter portion 16a to the distal end side in the axial direction so as to be a screw portion. After the 16b is formed, the tip end side of the screw portion 16b is a tapered portion 16c that is slightly reduced in diameter toward the tip.
[0010]
Note that the second cylindrical member 5 fitted into the tightening member 16 and the first cylindrical member 4 is expanded in diameter by, for example, winding a tape at the base end side outer diameter portion. When fully pulled out from the cylindrical member 4, the expanded diameter portion is locked to the inner front end surface of the expanded diameter portion 16 a of the tightening member 16, thereby causing the second cylindrical member 5 to be separated from the first cylindrical member 4. The stopper is designed.
The tightening nut 17 has a substantially cylindrical shape, and an outer diameter is formed to be substantially equal to the outer diameter of the enlarged diameter portion 16 a of the tightening member 16, while an inner diameter is formed to be approximately equal to the outer peripheral portion of the distal end portion of the tightening member 16. Being done. That is, the tightening nut 17 is formed with a screw hole 17a extending in the axial direction at the base end portion, and a tapered hole 17b whose diameter is slightly reduced from the screw hole 17a toward the distal end side. The tightening nut 17 is screwed into the threaded portion 16b of the tightening member 16 so that the threaded hole 17a can be advanced and retracted.
[0011]
The second cylindrical member 5 on the distal end side of the operation rod 2 is formed of a cylindrical elongated pipe, and the outer diameter thereof is set to a size that matches the inner diameter of the first cylindrical member 4. The second cylinder member 5 is provided through the tightening member 16 and the tightening nut 17. Therefore, when the tightening nut 17 is screwed into the tightening member 16, the tapered hole 17 b of the tightening nut 17 reduces the diameter of the distal end portion of the tightening member 16, so that the second cylindrical member 5 is formed at the distal end portion of the tightening member 16. The second cylinder member 5 can be fixed to the first cylinder member 4 by tightening the bolts.
A fourth cylindrical member 8 made of a square pipe having a square cross section is provided along the axial direction at the radial center of the second cylindrical member 5. The fourth cylinder member 8 is formed in a square shape having an inner diameter that fits the block portion 15a of the driving block member 15 provided at the distal end portion of the third cylinder member 7.
[0012]
A rotary nut member 18 is fixed to the tip of the fourth cylindrical member 8, and the rotary nut member 18 is supported by a thrust receiving ring 19.
The rotating nut member 18 has a substantially cylindrical shape, and the outer diameter of the tip portion is slightly smaller than the inner diameter of the second cylindrical member 5. Further, the base end portion of the rotating nut member 18 is reduced in diameter in two stages to form a bearing portion 18b and a fixing portion 18c to the fourth cylindrical member 8.
The fixed portion 18c of the rotary nut member 18 is formed in a quadrangular cross section having a size that matches the inner diameter of the fourth cylindrical member 8, and this fixed portion 18c is fitted into the opening on the front end side of the fourth cylindrical member 8. And is fixed by a set screw 20.
[0013]
The slide receiving ring 19 is formed in a thick cylindrical shape, and is fixed to the second cylindrical member 5 by a set screw 21. The slide receiving ring 19 is provided with a rotary nut member 18 extending therethrough, and a bearing portion 18b of the rotary nut member 18 is rotatably supported.
A screw hole 18a is formed in the distal end portion of the rotary nut member 18 so as to open to the distal end side, and a pull bolt member 22 is screwed into the screw hole 18a so as to be able to advance and retract.
The pulling bolt member 22 has a cylindrical shape, and a bolt portion 22a that is screwed into the screw hole 18a of the rotary nut member 18 is formed on the proximal end side. In addition, a protruding portion 22 b that protrudes in a plate shape toward the distal end side is formed at the distal end portion of the pull bolt member 22. And the 2nd clamping member 25 is connected with this protrusion part 22b via the link member 23. As shown in FIG.
The link member 23 is formed with substantially U-shaped grooves 23a and 23b at both ends.
[0014]
The second clamping member 25 is formed in a substantially L shape as a whole, with an insertion portion 25b extending along the axial direction and extending slightly downward at the base end portion. The thickness of the connecting portion 25c on the distal end side of the insertion portion 25b is formed to be smaller than the sandwiching portion 25a on the distal end side of the second sandwiching member 25, and fits the U-shaped groove 23b on the distal end side of the link member 23. It is supposed to be thick.
The first holding member 24 that pivotally supports the second holding member 25 has a holding portion 24a on the distal end side that has substantially the same shape as the holding portion 25a of the second holding member 25, and a base end portion that is bifurcated and held. A portion 24b is formed. The width of the groove of the holding portion 24b is set to a size that matches the width of the insertion portion 25b of the second holding member 25.
The first clamping member 24 has a base end portion 24c formed in a cylindrical shape, and the outer diameter thereof is set to a size that matches the inner diameter of the second cylindrical member 5, while the inner diameters are the pull bolt member 22 and the link member 23. The diameter is slightly larger than that. The first sandwiching member 24 is provided by fixing the proximal-side cylindrical portion 24 c to the opening on the distal end side of the second cylindrical member 5 and fixing by a plurality of set screws 26. A spacer ring 27 is loosely fitted to the pull bolt member 22 between the rotary nut member 18 and the cylindrical portion 24c of the first clamping member 24.
[0015]
The second holding member 25 is pivotally supported by the pivot shaft 28 on the distal end side of the holding portion 24b in a state where the insertion portion 25b is inserted into the holding portion 24b of the first holding member 24. Further, the second clamping member 25 is connected by a pin 29 with the connecting portion 25 c inserted into the U-shaped groove 23 b on the distal end side of the link member 23. Then, the protruding portion 22 b of the pull bolt member 22 is inserted into the U-shaped groove 23 a on the proximal end side of the link member 23 and connected by a pin 30.
It is preferable to provide knurled rubber plates 24A and 25A at the opposing portions of the clamping portions 24a and 25a of the first clamping member 24 and the second clamping member 25. The rubber plates 24A and 25A are configured to engage with each other as shown in FIG. 2 when the first clamping member 24 and the second clamping member 25 are closed.
In the safety work 1 for working at high places, main parts such as the first cylinder member 4 and the second cylinder member 5 are formed of an insulating material such as polypropylene. In addition, a hook member 31 is provided at an appropriate position of the first cylindrical member 4 so as to prevent further work by holding the tip end side for safety of work.
[0016]
Next, the use of the safety work 1 for working at high places in this embodiment will be described.
FIG. 5 is a perspective view showing the usage state of the safety hand 1 of the present invention.
As shown in this figure, the safety hand 1 of the present invention is mainly used as a hot-wire safety hand. For example, for power distribution, it is used to remove flying objects such as spiders and string, vinyl, laundry, dead branches, and bird's nests caught on distribution lines, pole equipment, insulators, etc. Is done. In addition, as a power transmission relationship, it is used to remove various flying objects and bird's nests caught on power transmission lines, jumper lines, insulators, arc horns, and steel tower arms from the top of the tower.
[0017]
In use, first, the second cylinder member 5 is expanded and contracted with respect to the first cylinder member 4 so that the length is easy to use. For this purpose, the tightening nut 17 is loosened with respect to the tightening member 16, the second tube member 5 is pulled out from the first tube member 4 by an arbitrary length, and then the tightening nut 17 is mounted on the tightening member 16. This is done by tightening and tightening the second cylindrical member 17 at the tip of the tightening member 16. As the first cylinder member 4 and the second cylinder member 5 expand and contract, the third cylinder member 7 and the drive block member 15 provided at the distal end thereof advance and retract in the fourth cylinder member 8. Become.
Next, the driving member 6 is rotated in the circumferential direction with respect to the first cylindrical member 4, thereby opening the second holding member 25 by an appropriate angle with respect to the first holding member 24. That is, by rotating the drive member 6 with respect to the first cylinder member 4, the drive block member 15 is rotated in conjunction with the shaft member 10 and the third cylinder member 7, and the drive block member 15 is rotated. By transmitting to the fourth cylinder member 8 and rotating the rotary nut member 18, and pulling the pull bolt member 22 screwed into the rotary nut member 18 from the rotary nut member 18, This is done by rotating the second clamping member 25 about the pivot shaft 28 by the link member 23 provided between the member 25 and the member 25.
[0018]
Then, the drive member 6 is rotated in the reverse direction while the flying object 100 such as a plastic bag caught on the electric wire or the like is positioned between the holding portions 24a and 25a of the both holding members 24 and 25, and the both holding members 24 are rotated. , 25 is closed and the flying object 100 is clamped and removed from the electric wire or the like. That is, by rotating the driving member 6 in the opposite direction to the time when the clamping members 24 and 25 are opened, the pulling bolt member 22 is screwed with respect to the rotating nut member 18 so that the link member 23 is moved to the proximal end side. By pulling, the second clamping member 25 is rotated about the pivot shaft 28 to close the clamping members 24 and 25. In addition, since the jagged rubber plates 24A and 25A are provided so as to engage with each other at the opposing portions of the holding members 24 and 25, the flying object 100 is securely held by the holding members 24 and 25 of the safety hand 1. .
By the way, the rotation of the second clamping member 25 around the pivot shaft 28 is performed via the pull bolt member 22 and the link member 23 pin-coupled to the second clamping member 25, so that the link member 23 is a pin. By suitably swinging about 29, 30, the holding members 24, 25 are smoothly opened and closed.
[0019]
In a state where the flying object 100 is clamped by the clamping members 24 and 25, the clamping members 24 and 25 are not likely to open even if the hand is released from the driving member 6. Therefore, since the flying object etc. 100 clamped by the clamping members 24 and 25 can be drawn to hand, there is no possibility of dropping the flying object etc. 100 even in the high place work on the tower or the bucket. It can be done safely. In addition, since the main parts such as the operation rod 2 are made of an insulating material, it is possible to safely perform the operation against the removal of the flying object 100 caught on the live line.
After the work is finished, the safety member 1 can be stored compactly by closing the clamping member 3 and inserting the second cylinder member 5 into the first cylinder member 4 to shorten the operation rod 2. it can. Therefore, it is convenient for storage and carrying.
[0020]
In addition, the safety hand 1 for high place work of this invention is not restricted to the structure of the said Example, It can change suitably.
For example, the stopper for fixing the first cylinder member 4 and the second cylinder member 5 at an arbitrary position is not limited to the configuration including the tightening member 16 and the tightening nut 17 as in the above embodiment.
Further, the operation rod 2 is preferably configured to be extendable / contractable, but may be non-extensible / contractible. In this case, the rotary nut member 18 may be provided directly at the tip of the shaft member 10. On the contrary, in the said Example, although it was set as the structure which can be expanded-contracted in 2 steps | paragraphs of the 1st cylinder member 4 and the 2nd cylinder member 5, of course, it is good also as a structure which can be expanded-contracted in 3 steps | paragraphs or more.
Further, in order to transmit the rotation from the third cylinder member 7 to the fourth cylinder member 8, the fourth cylinder member 8 and the driving block member 15 are rectangular in the above embodiment, but other polygons or the like are used. It may be configured.
[0021]
【The invention's effect】
As described above in detail, according to the safety hand for working at high places of the present invention, the object can be held in a gripped state. The flying object can be drawn close to the hand while it is sandwiched between. Therefore, flying objects can be safely removed even at high altitude work.
In addition, if the operation rod is configured to be extendable and retractable, not only does it take up space for carrying and storage, but also the length can be easily used according to the work, so that the work can be performed efficiently and safely. it can.
Furthermore, if the safety hand is made of an insulating material, it can be safely performed even when working on a live wire.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of a safety hand for working at high places according to the present invention.
2 is a longitudinal sectional view of the safety hand of FIG. 1. FIG.
3 is a cross-sectional view taken along the line AA in FIG.
4 is a BB end view of FIG. 2. FIG.
FIG. 5 is a perspective view showing a usage state of the safety hand of FIG. 1;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Safety hand for work in high places 2 Operation rod 3 Clamping member 4 1st cylinder member 5 2nd cylinder member 6 Drive member 7 3rd cylinder member 8 4th cylinder member 10 Shaft member 15 Drive block member 16 Tightening member 17 Tightening Nut 18 Rotating nut member 22 Pull bolt member 23 Link member 24 First clamping member 25 Second clamping member 28 Pivot shaft

Claims

A safety hand in which the first clamping member and the second clamping member provided at the distal end portion of the operation rod are opened and closed by operation of a drive member provided at the proximal end portion of the operation rod,
The operation rod is inserted and inserted so that a plurality of outer cylindrical members (4, 5) can be expanded and contracted and fixed at an arbitrary position.
A plurality of inner cylindrical members (7, 8) are provided in the operation rod ,
The adjacent inner cylindrical member (8) on the distal end side and the inner cylindrical member (7) on the proximal end side are:
The inner surface of the inner cylindrical member (8) on the distal end side is formed into a polygonal end surface, and is formed at the distal end of the inner cylindrical member on the proximal end side into an end surface polygon that matches the inner surface of the inner cylindrical member (8) on the distal end side. Provided is a driving block member,
The driving block member is provided in the inner surface of the inner cylindrical member (8) on the distal end side so as to be movable back and forth in the axial direction and not mutually rotatable.
The proximal end of the innermost cylindrical member on the most proximal side is fixed to the drive member,
The first clamping member on which the second clamping member is pivotally supported is fixed to the distal end portion of the operation rod,
A pulling bolt member that rotates the second clamping member around the pivot shaft is provided at the base end of the second clamping member,
The pull bolt member is threadably engaged with a rotary nut member that is prevented from moving in the axial direction with respect to the operation rod and is rotatable with respect to the operation rod.
The rotating nut member is fixed to the tip of the innermost cylindrical member provided in the operation rod,
A safety hand for aerial work, characterized in that a drive member for rotating the rotary nut member via an inner cylinder member is provided at a base end portion of the operation rod.

The safety hand for aerial work according to claim 1, wherein the operation rod and the driving member are formed of an insulating material.