JP2021147799A - Hanging support tool for overhead wire ladder - Google Patents

Abstract

To make it possible to carry an overhead wire ladder safely and smoothly when hoisting it on the upper part of a steel tower or the like.SOLUTION: There is provided a hanging support tool 20 for an overhead wire ladder attached to a ladder fixing tool 1, which includes two support rods 4, an arm metal fixing bracket 6 that is movably provided on one end side of the support rod 4 in the length direction of the support rod 4 and is fixed to an arm metal 3, and a ladder mounting bracket 5 provided on the other end side of the support rod 4 and attached to the overhead wire ladder 2. The hanging support tool 20 for an overhead wire ladder includes: a first fixture 21a attached to one of the support rods 4; a second fixture 21b attached to the other of the support rods 4; and a connector 22 having both ends connected to the two fixtures 21a and 21b, respectively, and a hook portion 23 provided at the center where a hook of a returnable rope can be detachably attached.SELECTED DRAWING: Figure 1

Description

この発明は、架線梯子を鉄塔などの上部に吊り上げる際に、安全にかつスムースに運搬できるようにした架線梯子用吊下げサポート具に関する。 The present invention relates to a hanging support tool for an overhead wire ladder that enables safe and smooth transportation when the overhead wire ladder is lifted to an upper part such as a steel tower.

例えば、送電線鉄塔に架設されている送電線の点検保守作業を行う際には、作業者の足場を確保するために、架線梯子が使用される。 For example, when performing inspection and maintenance work on a transmission line erected on a transmission line tower, an overhead line ladder is used to secure a foothold for workers.

架線梯子は、作業の安全かつ迅速に行うためには、鉄塔の腕金などにしっかり固定する必要があり、そのため、梯子の２本の縦木の上端部を鉄塔の腕金にそれぞれ固定するための梯子用固定具が用いられる（特許文献１参照）。 The overhead wire ladder must be firmly fixed to the arm of the tower in order to carry out the work safely and quickly, so that the upper ends of the two vertical trees of the ladder are fixed to the arm of the tower, respectively. (See Patent Document 1).

このような梯子用固定具は、長ネジ状の支持棒の一端に上記腕金に固定する腕金固定金具と、支持棒の他端に梯子の縦木に取付ける梯子取付金具とを、備える。 Such a ladder fixing tool includes an arm metal fixing bracket that is fixed to the arm metal at one end of a long screw-shaped support rod, and a ladder mounting bracket that is attached to a vertical tree of the ladder at the other end of the support rod.

そして、作業者は、鉄塔への昇塔前に、予め、梯子用固定具の梯子取付金具を架線梯子に取り付け、架線梯子を塔上に引上げてから、梯子用固定具の腕金固定具を腕金に固定することで、架線梯子を腕金に固定するようにしている。 Then, before ascending to the tower, the worker attaches the ladder mounting bracket of the ladder fixture to the overhead wire ladder in advance, pulls up the overhead wire ladder onto the tower, and then attaches the arm metal fixture of the ladder fixture. By fixing it to the arm, the overhead wire ladder is fixed to the arm.

特開２０１１−１８８６５９号公報Japanese Unexamined Patent Publication No. 2011-188657

ところで、鉄塔の塔上で作業を行う際には、上述のように、架線梯子を持って昇塔しなければならず、作業者は架線梯子の他、作業に必要な機材、工具なども多数あるため、重労働でかつ危険を伴う。 By the way, when working on the tower of a steel tower, as mentioned above, it is necessary to ascend the tower with an overhead wire ladder, and the worker has a lot of equipment and tools necessary for the work in addition to the overhead wire ladder. Because of this, it is hard work and dangerous.

そのため、架線梯子は、予め鉄塔上部に取付けた滑車などを利用して、フック付きの通い綱を用い、このフックを架線梯子の横木に引掛けて吊り上げることで、鉄塔上部への運搬を行っている。 Therefore, for the overhead wire ladder, a pulley or the like attached to the upper part of the tower in advance is used, and a toll rope with a hook is used. There is.

架線梯子の横木にフックを掛けて通い綱で吊り上げると、横木の幅方向にフックが移動してしまい、架線梯子をまっすぐに吊り上げることが難しく、架線梯子が傾いてしまうと、揺れの原因になり、吊り上げている途中で鉄塔に衝突したり、作業者に当たったり危険である。 If you hang a hook on the crossbar of the overhead wire ladder and lift it with a rope, the hook will move in the width direction of the crossbar, making it difficult to lift the overhead wire ladder straight, and if the overhead wire ladder tilts, it will cause shaking. , It is dangerous to hit the steel tower or hit the worker while lifting.

そのため、従来、架線梯子を吊り上げている途中で他の作業者が架線梯子の揺れを押えたりして、運搬に時間がかかるという問題もあった。特に、塔上では、風などの影響が大きく、安定した運搬が難しいという問題があった。 Therefore, conventionally, there is a problem that it takes a long time to carry the ladder because another worker suppresses the shaking of the ladder while the overhead wire ladder is being lifted. In particular, on the tower, there is a problem that stable transportation is difficult due to the large influence of wind and the like.

そこでこの発明は、架線梯子をまっすぐに吊り上げることで、少しでも安定した架線梯子の運搬を可能にした架線梯子用吊下げサポート具を提供することを目的とする。 Therefore, it is an object of the present invention to provide a hanging support tool for an overhead wire ladder that enables stable transportation of the overhead wire ladder by lifting the overhead wire ladder straight.

上記課題を解決するために、請求項１の発明は、２本の支持棒と、前記支持棒の一端側において前記支持棒の長さ方向に移動可能に設けられるとともに、腕金に固定される腕金固定金具と、前記支持棒の他端側に設けられ、架線梯子に取り付けられる梯子取付金具と、を備えた梯子用固定具に取り付けられる架線梯子用吊下げサポート具であって、前記一方の支持棒に取り付けられる第１の取付具と、前記他方の支持棒に取り付けられる第２の取付具と、両端部が前記２つの取付具にそれぞれ連結され、中央部に通い綱のフックが着脱自在に取り付けられる引掛け部が設けられた連結具と、を有する、ことを特徴とする。 In order to solve the above problems, the invention of claim 1 is provided with two support rods and one end side of the support rods so as to be movable in the length direction of the support rods and is fixed to an arm. An overhead wire ladder hanging support tool that is attached to a ladder fixing tool provided with an arm metal fixing metal fitting and a ladder mounting metal fitting provided on the other end side of the support rod and attached to the overhead wire ladder. The first attachment to be attached to the support rod, the second attachment to be attached to the other support rod, and both ends are connected to the two attachments, respectively, and the hook of the rope is attached to and detached from the center. It is characterized by having a connecting tool provided with a hook portion that can be freely attached.

請求項１の発明にあっては、通い綱のフックを連結具のほぼ中央に掛ける。 In the invention of claim 1, the hook of the tow rope is hung substantially in the center of the connecting tool.

請求項２の発明は、請求項１に記載の架線梯子用吊下げサポート具において、前記支持棒が長ネジからなり、前記取付具にネジ溝が形成されており、前記ネジ溝を前記支持棒に螺合した、ことを特徴とする。 According to a second aspect of the present invention, in the hanging support tool for an overhead wire ladder according to the first aspect, the support rod is made of a long screw, and a screw groove is formed in the mounting tool. It is characterized by being screwed into.

請求項３の発明は、請求項１又は請求項２に記載の架線梯子用吊下げサポート具において、前記連結具の一方の端部にネジ部が形成され、前記第１の取付具にネジ孔が形成されており、前記連結具のネジ部を前記第１の取付具のネジ孔に螺合した、ことを特徴とする。 According to a third aspect of the present invention, in the hanging support tool for an overhead wire ladder according to the first or second aspect, a screw portion is formed at one end of the connecting tool, and a screw hole is formed in the first mounting tool. Is formed, and the screw portion of the connecting tool is screwed into the screw hole of the first mounting tool.

請求項１の発明によれば、通い綱のフックを連結具の中央部に着脱自在に取付けることができるので、通い綱で架線梯子を吊り上げたときに、架線梯子はその幅方向の中央で支持されることとなり、まっすぐな状態で吊り上げられることになり、鉄塔や他の作業者に接触することなく安定した向きで塔上に引き上げることができる。これにより、吊り上げる架線梯子を鉄塔などに衝突しないように誘導する必要は無く、または誘導する機会を減らすことができ、その分、吊り上げる時間も短縮することができる。 According to the invention of claim 1, since the hook of the tow rope can be detachably attached to the central portion of the connecting tool, when the overhead wire ladder is lifted by the toll rope, the overhead wire ladder is supported at the center in the width direction thereof. It will be lifted in a straight state, and it can be pulled up on the tower in a stable direction without contacting the tower or other workers. As a result, it is not necessary to guide the overhead wire ladder to be lifted so as not to collide with a steel tower or the like, or the chance of guiding the ladder can be reduced, and the lifting time can be shortened accordingly.

請求項２の発明によれば、梯子用固定具の支持棒が長ネジで構成され、前記取付具を支持棒に螺合させているので、連結具が取付具から抜けることはなく、よって、フックが架線梯子から外れることはなく、安全に架線梯子を吊り上げることができる。 According to the invention of claim 2, since the support rod of the ladder fixture is composed of a long screw and the attachment is screwed into the support rod, the connector does not come off from the attachment. The hook does not come off the overhead wire ladder, and the overhead wire ladder can be safely lifted.

請求項３の発明によれば、連結具を取付具に螺合したので、その取付が強固となり、安定した架線梯子の吊り上げを行うことができる。 According to the invention of claim 3, since the connecting tool is screwed into the mounting tool, the mounting is strengthened and the overhead wire ladder can be stably lifted.

図２とともに、この発明の実施の形態に係る架線梯子用吊下げサポート具が用いられる梯子用固定具を示すもので、本図は腕金に固定する腕金固定金具を示し、（ａ）が腕金に固定した状態の正面図、（ｂ）はその断面図である。Along with FIG. 2, a ladder fixture using the overhead wire ladder suspension support according to the embodiment of the present invention is shown, and this figure shows an arm bracket fixing bracket to be fixed to the arm, and FIG. A front view of the state fixed to the arm, (b) is a cross-sectional view thereof. 梯子に取付けられる梯子取付金具を示すもので、梯子を取付けた状態の断面図である。It shows the ladder mounting bracket to be attached to a ladder, and is the cross-sectional view of the state where the ladder is attached. 実施の形態に係る架線梯子用吊下げサポート具を示すもので、（ａ）は正面図、（ｂ）は平面図である。A hanging support tool for an overhead wire ladder according to an embodiment is shown, where FIG. 3A is a front view and FIG. 3B is a plan view. 梯子用固定具に、架線梯子用吊下げサポート具を取付けた状態を示す正面図である。It is a front view which shows the state which attached the hanging support tool for an overhead wire ladder to the fixture for a ladder. 架線梯子を運搬するために、通い綱のフックを取付けた使用状態を示す斜視図である。It is a perspective view which shows the use state which attached the hook of the toll rope for carrying the overhead wire ladder.

以下、この発明を図示の実施の形態に基づいて説明する。 Hereinafter, the present invention will be described based on the illustrated embodiment.

実施の形態に係る架線梯子用吊下げサポート具を説明する前に、架線梯子を鉄塔の腕金などに固定するための梯子用固定具１について説明する。 Before explaining the hanging support tool for the overhead wire ladder according to the embodiment, the ladder fixing tool 1 for fixing the overhead wire ladder to the arm metal of the steel tower or the like will be described.

梯子用固定具１は、架線梯子２を鉄塔の腕金３に固定するためのもので、長ネジ状の支持棒４と、支持棒４の上端側に移動自在に支持された腕金固定金具５と、支持棒４の下端に取り付けられた梯子取付金具６とからなる。 The ladder fixing tool 1 is for fixing the overhead wire ladder 2 to the arm metal 3 of the iron tower, and is a long-screw-shaped support rod 4 and an arm metal fixing bracket movably supported on the upper end side of the support rod 4. 5 and a ladder mounting bracket 6 attached to the lower end of the support rod 4.

架線梯子２は、その縦木２ａがＬ字アングルで、２本の縦木２ａに足場となる横木２ｂが一定間隔で固定されている。 The vertical tree 2a of the overhead wire ladder 2 has an L-shaped angle, and horizontal trees 2b serving as scaffolds are fixed to the two vertical trees 2a at regular intervals.

腕金３は、Ｌ字アングルの鉄骨で構成され、垂直面となる垂直側板３ａと、水平面となる水平側板３ｂとからなる。 The arm 3 is composed of an L-shaped angle steel frame, and is composed of a vertical side plate 3a as a vertical surface and a horizontal side plate 3b as a horizontal surface.

支持棒４の下端には、支持棒４と直交する円柱状の駒４ａが一体的に設けられ、後述するように、駒４ａが梯子取付金具６に取り付けられる。 A columnar piece 4a orthogonal to the support rod 4 is integrally provided at the lower end of the support rod 4, and the piece 4a is attached to the ladder mounting bracket 6 as described later.

腕金固定金具５は、腕金３の垂直側板３ａを挟持する第１の挟持具５ａと、腕金３の水平側板３ｂを挟持する第２の挟持具５ｂと、第２の挟持具５ｂを下方から支える押え部材７と、を備える。 The arm fixing bracket 5 includes a first holding tool 5a for holding the vertical side plate 3a of the arm 3, a second holding tool 5b for holding the horizontal side plate 3b of the arm 3, and a second holding tool 5b. A pressing member 7 that supports from below is provided.

第１の挟持具５ａは断面Ｊ字状の金具で、逆さＪ字状の向きにされ、腕金３の垂直側板３ａを上方から被せるようになっている。 The first holding tool 5a is a metal fitting having a J-shaped cross section, is oriented in an inverted J-shape, and covers the vertical side plate 3a of the arm metal 3 from above.

第２の挟持具５ｂは断面Ｊ字状の金具で、横倒Ｊ字状の向きにされ、腕金３の水平側板３ｂを横方向から被せるようになっている。 The second holding tool 5b is a metal fitting having a J-shaped cross section, is oriented in a sideways J-shape, and covers the horizontal side plate 3b of the arm metal 3 from the lateral direction.

第１の挟持具５ａは上下方向に伸びる貫通孔が設けられ、この貫通孔に上記支持棒４が貫通されるようになっている。 The first holding tool 5a is provided with a through hole extending in the vertical direction, and the support rod 4 is penetrated through the through hole.

第２の挟持具５ｂには、長孔が設けられ、この長孔に上記支持棒４が挿通され、また、第２の挟持具５ｂの下面はギザギザ面に形成されている。 A long hole is provided in the second holding tool 5b, the support rod 4 is inserted through the long hole, and the lower surface of the second holding tool 5b is formed in a jagged surface.

第２の挟持具５ｂの下側には、上記支持棒４が挿通される押え部材７が設けられ、この押え部材７の上面には上記第２の挟持具５ｂのギザギザ面に対応したギザギザ面が形成されている。 A pressing member 7 through which the support rod 4 is inserted is provided on the lower side of the second holding tool 5b, and the upper surface of the pressing member 7 has a jagged surface corresponding to the jagged surface of the second holding tool 5b. Is formed.

このように構成された腕金固定金具５は、第１の挟持具５ａを腕金３の垂直側板３ａに、第２の挟持具５ｂを腕金３の水平側板３ｂに、それぞれ挟持させ、また、押え部材７を第２の挟持具５ｂの下側に位置させて、支持棒４を下方から貫通させる。 In the arm metal fixing bracket 5 configured in this way, the first holding tool 5a is held by the vertical side plate 3a of the arm 3 and the second holding tool 5b is held by the horizontal side plate 3b of the arm 3, respectively. , The pressing member 7 is positioned below the second holding tool 5b, and the support rod 4 is penetrated from below.

このとき、支持棒４には予めナット８を螺合させておき、押え部材７、第２の挟持具５ｂ、第１の挟持具５ａをセットした後、第１の挟持具５ａの上方からナット９を螺合することで、腕金３への腕金固定金具５の固定が完了する。 At this time, a nut 8 is screwed into the support rod 4 in advance, and after setting the pressing member 7, the second holding tool 5b, and the first holding tool 5a, the nut is placed from above the first holding tool 5a. By screwing 9, the fixing of the arm metal fixing bracket 5 to the arm metal 3 is completed.

なお、第２の挟持具５ｂを横方向にスライドさせることで、腕金３の水平側板３ｂを隙間なく固定でき、また、ナット８、９の締付により押え部材７のギザギザ面と第２の挟持具５ｂのギザギザ面とが嵌合して第２の挟持具５ｂの横方向への移動が阻止され、腕金３は腕金固定金具５により確実に固定される。 The horizontal side plate 3b of the arm 3 can be fixed without a gap by sliding the second holding tool 5b in the lateral direction, and the jagged surface of the pressing member 7 and the second holding member 7 can be fixed by tightening the nuts 8 and 9. The jagged surface of the holding tool 5b is fitted to prevent the second holding tool 5b from moving in the lateral direction, and the arm metal 3 is securely fixed by the arm metal fixing metal fitting 5.

梯子取付金具６は、支持棒４の下端の駒４を保持する支持棒取付部６ａと、架線梯子２の縦木２ａに取り付けられる縦木取付部６ｂと、からなり、支持棒取付部６ａと縦木取付部６ｂとはボルト１０により回動自在に連結されている。 The ladder mounting bracket 6 is composed of a support rod mounting portion 6a for holding the piece 4 at the lower end of the support rod 4, a vertical wood mounting portion 6b attached to the vertical tree 2a of the overhead wire ladder 2, and the support rod mounting portion 6a. It is rotatably connected to the vertical tree mounting portion 6b by a bolt 10.

支持棒取付部６ａは平板金をＵ字状に折り曲げ、折り曲げ部を上記駒４ａの外周に沿うように形成して、上記駒４ａの保持部１１とし、また、対向した２枚の板金で、後述の縦木取付部６ｂを挟み込んで挟持部１２とするようになっている。 The support rod mounting portion 6a is formed by bending a flat plate metal into a U shape and forming the bent portion along the outer circumference of the piece 4a to form a holding portion 11 of the piece 4a. The vertical tree mounting portion 6b, which will be described later, is sandwiched to form the holding portion 12.

縦木取付部６ｂは、２枚の板材からなり、一方が平板１３で、他方が縦木２ａのＬ字アングルを断面で見て囲う形状に曲げられた屈曲板１４で構成されている。 The vertical wood mounting portion 6b is composed of two plate materials, one of which is a flat plate 13 and the other of which is a bent plate 14 bent into a shape that surrounds the L-shaped angle of the vertical wood 2a in cross section.

縦木取付部６ｂは、その屈曲板１４に縦木２ａを嵌め込んだ状態で平板１３を合わせて、縦木２ａを挟持し、その下部はボルト１５で平板１３と屈曲板１４とを締付けるとともに、その上部は支持棒取付部６ａで挟み、ボルト１０で締付けることで、支持棒取付部６ａに取り付けられる。 The vertical wood mounting portion 6b aligns the flat plate 13 with the vertical wood 2a fitted into the bent plate 14, sandwiches the vertical wood 2a, and tightens the flat plate 13 and the bent plate 14 with bolts 15 at the lower part thereof. The upper part thereof is sandwiched between the support rod mounting portions 6a and tightened with the bolts 10 to be attached to the support rod mounting portion 6a.

このようにして、梯子２の縦木２ａに、支持棒取付部６ａと縦木取付部６ｂとからなる梯子取付金具６が取付けられ、また、支持棒４の上端部に腕金固定金具５が腕金３に固定されることで、架線梯子２は梯子用固定具１を介して腕金３に固定される。 In this way, the ladder mounting bracket 6 including the support rod mounting portion 6a and the vertical wood mounting portion 6b is attached to the vertical tree 2a of the ladder 2, and the arm metal fixing bracket 5 is attached to the upper end portion of the support rod 4. By being fixed to the arm 3, the overhead wire ladder 2 is fixed to the arm 3 via the ladder fixing tool 1.

実施の形態に係る架線梯子用吊下げサポート具２０は、左右２つの梯子用固定具１の支持棒４に取り付けられる。 The overhead wire ladder suspension support tool 20 according to the embodiment is attached to the support rods 4 of the two left and right ladder fixtures 1.

架線梯子用吊下げサポート具２０は、左右２つの梯子用固定具１にそれぞれ取り付けられる取付具２１と、２つの取付具２１を連結するように設けられた連結具２２と、からなり、連結具２２のほぼ中央部にはリング状の引掛け部２３が設けられている。 The overhead wire ladder hanging support tool 20 is composed of a fitting 21 attached to each of the two left and right ladder fixings 1 and a connecting tool 22 provided to connect the two fittings 21. A ring-shaped hooking portion 23 is provided at a substantially central portion of the 22.

取付具２１は、２つの管材をＴ字状に組み合せ横倒させたような形状をしており、垂直方向に伸びる垂直管材２４の内面に上記支持棒４が螺合するネジ溝２４ａが形成されている。 The fixture 21 has a shape as if two pipe members were combined in a T shape and laid down sideways, and a screw groove 24a into which the support rod 4 is screwed is formed on the inner surface of the vertical pipe member 24 extending in the vertical direction. ing.

取付具２１の垂直管材２４には、その水平方向に伸びる水平管材２５とは反対側に輪部２６が形成されている。この輪部２６は作業者が鉄塔に昇塔するときなどに、工具袋などを引掛けるのに利用することができる。 The vertical pipe member 24 of the fixture 21 is formed with a ring portion 26 on the side opposite to the horizontal pipe material 25 extending in the horizontal direction. The wheel portion 26 can be used for hooking a tool bag or the like when an operator ascends to a steel tower.

２つの取付具２１のうち、第１の取付具２１ａの水平管材２５の内面にはネジ孔２５ａが形成され、第２の取付具２１ｂの水平管材２５の内面にはネジ溝が形成されていない有底孔２５ｂに形成されている。 Of the two fixtures 21, a screw hole 25a is formed on the inner surface of the horizontal pipe member 25 of the first fixture 21a, and a screw groove is not formed on the inner surface of the horizontal pipe member 25 of the second fixture 21b. It is formed in the bottomed hole 25b.

また、２つの取付具２１の水平管材２５には、側方から水平管材２５を貫通する貫通孔２７が形成されている。 Further, the horizontal pipe material 25 of the two fixtures 21 is formed with a through hole 27 penetrating the horizontal pipe material 25 from the side.

連結具２２の一方の端部には、上記第１の取付具２１ａのネジ孔２５ａに対応するネジ部２２ａが形成され、他方の端部は、上記第２の取付具２１ｂの有底孔２５ｂに挿通される外径に形成されている。 A screw portion 22a corresponding to the screw hole 25a of the first attachment 21a is formed at one end of the connector 22, and the other end is a bottomed hole 25b of the second attachment 21b. It is formed to have an outer diameter that is inserted into.

また、連結具２２の上記取付具２１の水平管材２５に形成した貫通孔２７に対応する位置に同様の貫通孔２８が形成されており、連結具２２の両端を２つの取付具２１の水平管材２５に挿入したときに、貫通孔２７と貫通孔２８とを合わせた位置で抜け止めピン２９を挿通することで連結具２２が取付具２１から抜け出るのが防止される。 Further, a similar through hole 28 is formed at a position corresponding to the through hole 27 formed in the horizontal pipe material 25 of the attachment 21 of the connector 22, and both ends of the connector 22 are the horizontal pipes of the two attachments 21. When inserted into 25, the connector 22 is prevented from coming out of the attachment 21 by inserting the retaining pin 29 at the position where the through hole 27 and the through hole 28 are aligned.

このような架線梯子用吊下げサポート具２０は、次のようにして梯子用固定具１に取り付けられる。 Such an overhead wire ladder hanging support tool 20 is attached to the ladder fixing tool 1 as follows.

先ず、２つの梯子用固定具１のうち、腕金固定金具５は外した状態にして、梯子取付金具６を架線梯子２の縦木２ａに固定する。 First, of the two ladder fixtures 1, the arm metal fixing bracket 5 is removed, and the ladder mounting bracket 6 is fixed to the vertical tree 2a of the overhead wire ladder 2.

次に、架線梯子用吊下げサポート具２０の取付具２１を２つの梯子用固定具１の支持棒４にそれぞれ螺合し、所定の位置にする。このとき、左右の取付具２１の位置を合わせておく。 Next, the fixture 21 of the overhead wire ladder suspension support 20 is screwed into the support rods 4 of the two ladder fixtures 1 to bring them into a predetermined position. At this time, the positions of the left and right fixtures 21 are aligned.

続いて、第１の取付具２１ａの水平管材２５のネジ孔２５ａに連結具２２の一方の端部のネジ部２２ａを螺合する。このとき、水平管材２５の貫通孔２７と連結具２２の貫通孔２８とを合わせ、抜け止めピン２９を貫通させ、取付具２１から連結具２２が抜けないようにする。なお、第１の取付具２１ａと連結具２２とは螺合による結合なので、抜け止めピン２９は不要ではあるが、万が一のためである。 Subsequently, the screw portion 22a at one end of the connector 22 is screwed into the screw hole 25a of the horizontal pipe member 25 of the first attachment 21a. At this time, the through hole 27 of the horizontal pipe material 25 and the through hole 28 of the connecting tool 22 are aligned, and the retaining pin 29 is passed through to prevent the connecting tool 22 from coming off from the mounting tool 21. Since the first mounting tool 21a and the connecting tool 22 are connected by screwing, the retaining pin 29 is not necessary, but it is just in case.

次に、第２の取付具２１ｂの水平管材２５の有底孔２５ｂに連結具２２の他方の端部を挿入する。このとき、２つの支持棒４をその上部が開く方向にやや回動させると、水平管材２５の有底孔２５ｂへの連結具２２の端部を挿入しやすくできる。 Next, the other end of the connector 22 is inserted into the bottomed hole 25b of the horizontal pipe member 25 of the second attachment 21b. At this time, if the two support rods 4 are slightly rotated in the direction in which the upper portion thereof is opened, the end portion of the connector 22 can be easily inserted into the bottomed hole 25b of the horizontal pipe material 25.

そして、水平管材２５の貫通孔２７と連結具２２の貫通孔２８とを合わせ、抜け止めピン２９を貫通させることで、取付具２１から連結具２２が抜けないようになり、架線梯子用吊下げサポート具２０の梯子用固定具１への取り付けが完了する。 Then, by aligning the through hole 27 of the horizontal pipe material 25 with the through hole 28 of the connecting tool 22 and penetrating the retaining pin 29, the connecting tool 22 cannot be pulled out from the mounting tool 21 and the overhead wire ladder is suspended. The attachment of the support tool 20 to the ladder fixing tool 1 is completed.

さらに、梯子用固定具１の支持棒４に上記腕金固定金具５を上述のようにして、ナット８、９により固定する。 Further, the arm metal fixing bracket 5 is fixed to the support rod 4 of the ladder fixing tool 1 by the nuts 8 and 9 as described above.

このようにして、架線梯子２に梯子用固定具１及び架線梯子用吊下げサポート具２０を取り付けた状態で、作業者が鉄塔に昇塔するとき、通い綱３０のフック３１を架線梯子用吊下げサポート具２０の上記引掛け部２３に掛け、通い綱３０を引き上げる。 In this way, when the worker ascends to the steel tower with the ladder fixing tool 1 and the overhead wire ladder hanging support tool 20 attached to the overhead wire ladder 2, the hook 31 of the return rope 30 is suspended for the overhead wire ladder. Hook the hooking portion 23 of the lowering support tool 20 and pull up the towline 30.

このとき、通い綱３０のフック３１は上記引掛け部２３が架線梯子用吊下げサポート具２０の連結具２２のほぼ中央部に位置するため、架線梯子２を吊り上げたときに斜めに傾斜することはなく、ほぼまっすぐな状態で吊り上げることができる。 At this time, since the hook 31 of the return rope 30 is located substantially at the center of the connecting tool 22 of the hanging support tool 20 for the overhead wire ladder, the hook 31 is inclined diagonally when the overhead wire ladder 2 is lifted. It can be lifted almost straight.

以上のように、実施の形態に係る架線梯子用吊下げサポート具２０にあっては、架線梯子２をほぼまっすぐな状態で引き上げることができるため、鉄骨や作業者に衝突することが軽減され、安全に引き上げることができるとともに、梯子の揺れを少なくすることができるため、梯子の揺れを抑える必要は無く、スムースに引き上げることができる。 As described above, in the hanging support tool 20 for the overhead wire ladder according to the embodiment, since the overhead wire ladder 2 can be pulled up in a substantially straight state, collision with a steel frame or an operator is reduced. Since it can be pulled up safely and the sway of the ladder can be reduced, it is not necessary to suppress the sway of the ladder and the ladder can be pulled up smoothly.

以上、この発明の実施の形態について説明したが、具体的な構成は、上記の実施の形態に限られるものではなく、この発明の要旨を逸脱しない範囲の設計の変更等があっても、この発明に含まれる。 Although the embodiment of the present invention has been described above, the specific configuration is not limited to the above-described embodiment, and even if there is a design change or the like within a range that does not deviate from the gist of the present invention. Included in the invention.

例えば、上記の実施の形態では、取付具２１にネジ溝２４ａを設け、このネジ溝２４ａを長ネジからなる支持棒４に螺合するようにしたが、本発明はこれに限らず、取付具２１に貫通孔を設け、支持棒４に２つのナットを螺合して、２つのナットで取付具２１を上下から挟持するようにしても良い。 For example, in the above embodiment, the mounting tool 21 is provided with a screw groove 24a, and the screw groove 24a is screwed into the support rod 4 made of a long screw. However, the present invention is not limited to this, and the mounting tool is not limited to this. A through hole may be provided in 21 and two nuts may be screwed into the support rod 4 so that the fixture 21 may be sandwiched between the two nuts from above and below.

また、架線梯子用吊下げサポート具２０の第１の取付具２１ａと連結具２２との連結を螺合によるものとしたが、本発明はこれに限らず、左右両方共に、挿通孔として抜け止めピンなどにより連結具２２が取付具２１から抜けないようにしても良い。 Further, the connection between the first attachment 21a of the suspension support tool 20 for the overhead wire ladder and the connection tool 22 is made by screwing, but the present invention is not limited to this, and both the left and right sides are prevented from coming off as insertion holes. The connector 22 may be prevented from coming off from the connector 21 by a pin or the like.

１ 梯子用固定具
２ 架線梯子
３ 腕金
４ 支持棒
５ 腕金固定金具
６ 梯子取付金具
２０ 架線梯子用吊下げサポート具
２１ 取付具
２１ａ 第１の取付具
２１ｂ 第２の取付具
２２ 連結具
２２ａ ネジ部
２３ 引掛け部
２４ａ ネジ溝
２５ａ ネジ孔
３０ 通い綱
３１ フック 1 Ladder fixture 2 Overhead wire ladder 3 Arm metal 4 Support rod 5 Arm metal fixing bracket 6 Ladder mounting bracket 20 Hanging support tool for overhead wire ladder 21 Mounting tool 21a First mounting tool 21b Second mounting tool 22 Connecting tool 22a Thread part 23 Hook part 24a Thread groove 25a Screw hole 30 Ladder 31 Hook

Claims (3)

２本の支持棒と、前記支持棒の一端側において前記支持棒の長さ方向に移動可能に設けられるとともに、腕金に固定される腕金固定金具と、前記支持棒の他端側に設けられ、架線梯子に取り付けられる梯子取付金具と、を備えた梯子用固定具に取り付けられる架線梯子用吊下げサポート具であって、
前記一方の支持棒に取り付けられる第１の取付具と、
前記他方の支持棒に取り付けられる第２の取付具と、
両端部が前記２つの取付具にそれぞれ連結され、中央部に通い綱のフックが着脱自在に取り付けられる引掛け部が設けられた連結具と、を有する、
ことを特徴とする架線梯子用吊下げサポート具。 The two support rods are provided so as to be movable in the length direction of the support rod on one end side of the support rod, and the arm metal fixing bracket fixed to the arm metal and the other end side of the support rod are provided. A ladder mounting bracket that can be attached to an overhead wire ladder, and a hanging support tool for an overhead wire ladder that can be attached to a ladder fixture provided with.
A first fixture to be attached to one of the support rods,
A second fixture attached to the other support rod and
Both ends are connected to the two attachments, respectively, and the central portion has a connector provided with a hook for attaching and detaching a hook of a rope.
A hanging support tool for overhead wire ladders. 前記支持棒が長ネジからなり、前記取付具にネジ溝が形成されており、前記ネジ溝を前記支持棒に螺合した、
ことを特徴とする請求項１に記載の架線梯子用吊下げサポート具。 The support rod is made of a long screw, a screw groove is formed in the fitting, and the screw groove is screwed into the support rod.
The hanging support tool for an overhead wire ladder according to claim 1. 前記連結具の一方の端部にネジ部が形成され、前記第１の取付具にネジ孔が形成されており、前記連結具のネジ部を前記第１の取付具のネジ孔に螺合した、
ことを特徴とする請求項１又は請求項２に記載の架線梯子用吊下げサポート具。 A screw portion is formed at one end of the connector, a screw hole is formed in the first fixture, and the screw portion of the connector is screwed into the screw hole of the first fixture. ,
The hanging support tool for an overhead wire ladder according to claim 1 or 2.

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