JP6716338B2 - Pull-out device for overhead tension spring balancer - Google Patents

Pull-out device for overhead tension spring balancer Download PDF

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JP6716338B2
JP6716338B2 JP2016103404A JP2016103404A JP6716338B2 JP 6716338 B2 JP6716338 B2 JP 6716338B2 JP 2016103404 A JP2016103404 A JP 2016103404A JP 2016103404 A JP2016103404 A JP 2016103404A JP 6716338 B2 JP6716338 B2 JP 6716338B2
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outer cylinder
shaft
tip
screw
cylinder
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JP2017210055A (en
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博明 武井
博明 武井
涼佑 大阿久
涼佑 大阿久
伯晃 川崎
伯晃 川崎
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Sanwa Tekki Corp
East Japan Railway Co
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Sanwa Tekki Corp
East Japan Railway Co
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Description

本発明は、電車線路用のトロリ線、き電ちょう架線等の架空線の張力を一定に保つために、支持構造物と架空線との間の高所に設置されているばね式張力バランサの初期張力を調整するために、当該張力バランサの内筒を所定位置まで外筒から引き出す作業を行うための装置に関する。 The present invention relates to a spring type tension balancer installed at a high place between a supporting structure and an overhead wire in order to keep the tension of an overhead wire such as a trolley wire for a train track and a feeder line overhead. The present invention relates to a device for pulling out an inner cylinder of the tension balancer from an outer cylinder to a predetermined position in order to adjust an initial tension.

電車線路用の架空線を高所においてコンクリート柱のような支持構造物に引留めるばね式張力バランサは、コイルばねを内蔵した外筒と、この外筒内に嵌挿され、ばねにより外筒内へ引き込まれる内筒とを備え、内筒の先端部に架空線が接続される。内筒は、所望の初期張力が得られるまで、ばね力に抗して外筒から引き出される。 A spring tension balancer that holds an overhead line for a train track at a high place on a support structure such as a concrete column is an outer cylinder that contains a coil spring and is inserted into this outer cylinder. And an overhead line is connected to the front end of the inner barrel. The inner cylinder is pulled out of the outer cylinder against the spring force until the desired initial tension is obtained.

このようなばね式張力バランサは、架空線の伸縮や移動に応じてコイルばねの弾性で架空線に一定の張力を付与する公知のものである。ばね式張力バランサは、例えば特許文献１に示されるように、コンクリート柱から斜めに上方へ延びる斜め支持アームにより、外筒の先端側においてコンクリート柱に支持されることがある。 Such a spring tension balancer is a known one that applies a constant tension to the overhead wire by the elasticity of the coil spring according to the expansion and contraction or movement of the overhead wire. The spring tension balancer may be supported by the concrete column on the tip side of the outer cylinder by an oblique support arm that extends obliquely upward from the concrete column, as shown in Patent Document 1, for example.

一方、架空線が何らかの原因で断線したとき、上記のようなばね式張力バランサを高所の設置場所から地上へ降ろすことなく、高所に設置したまま、短時間で復旧工事を行うために使用される内筒の引き出し装置が特許文献２に提案されている。この引き出し装置は、外筒に離脱可能に懸架される取り付け部材と、この取り付け部材に離脱可能に支持される一対の圧力シリンダと、この圧力シリンダのロッドを内筒の先端側に離脱可能に結合する連結部材と、圧力ホースを介して圧力シリンダに圧力を供給するように地上に配置される圧力装置を具備する。 On the other hand, if the overhead line breaks for some reason, the spring tension balancer as described above can be used to perform restoration work in a short time without installing it at a high place and installing it at a high place. Patent Document 2 proposes a pulling-out device for the inner cylinder. This drawer device has a mounting member that is detachably suspended on an outer cylinder, a pair of pressure cylinders that are detachably supported by the mounting member, and a rod of this pressure cylinder that is detachably coupled to the tip side of the inner cylinder. And a pressure device arranged above the ground to supply pressure to the pressure cylinder via a pressure hose.

一対の圧力シリンダは、軸線を外筒の軸線と平行に向けロッドを外筒の先端方向へ突出させるように配置される。この引き出し装置は、高所に設置された張力バランサに装着され、地上から供給される油圧により、圧力シリンダのロッドを突出させ、内筒を所定位置まで外筒から引き出すように用いられる。 The pair of pressure cylinders are arranged so that the axis is parallel to the axis of the outer cylinder and the rod projects toward the tip of the outer cylinder. This drawer device is attached to a tension balancer installed at a high place, and is used so that the rod of the pressure cylinder is projected by the hydraulic pressure supplied from the ground to draw the inner cylinder from the outer cylinder to a predetermined position.

特開２０１０−１７９６７３号公報JP, 2010-179673, A 特開２０１０−１７３５４５号公報JP, 2010-173545, A

特許文献２に記載された引き出し装置は、使用に当たり、地上で油圧装置を操作する作業者と、高所に上がって、張力バランサへの装置の装着と調整、地上作業者への指示等を行う作業者の少なくとも２人の人員を必要とする。また圧力装置を含むので、装置が大型、大重量で、取り扱いが容易でないという難点がある。 In use, the drawer device described in Patent Document 2 is used by a worker who operates a hydraulic device on the ground, goes up to a high place, mounts and adjusts the device on a tension balancer, and gives instructions to a ground worker. Requires at least two personnel of workers. In addition, since the pressure device is included, the device is large and heavy, and it is not easy to handle.

上記引き出し装置は、特許文献１に記載されるように、斜め支持アームにより、外筒の先端側においてコンクリート柱に支持される形式の張力バランサへの適用も予定されているため、圧力シリンダの長さが斜め支持アームとの接続部に干渉しない長さに設定されている。このため、内筒の引き出し長さが、圧力シリンダの長さに制限される結果、引き出し長さが不十分で、標準の初期張力が得られない場合がある。応急の復旧工事においては、これで間に合うが、架空線の新設工事等においては、この引き出し装置を使用することができない。 As described in Patent Document 1, the drawer device is also expected to be applied to a tension balancer of a type supported by a concrete column on the tip side of the outer cylinder by an oblique support arm, so that the length of the pressure cylinder is increased. Is set to a length that does not interfere with the connection with the diagonal support arm. Therefore, as a result of the pull-out length of the inner cylinder being limited to the length of the pressure cylinder, the pull-out length may be insufficient and the standard initial tension may not be obtained. Although this is sufficient for emergency restoration work, this drawer cannot be used for new construction of overhead lines.

ところで、ばね式張力バランサには、その張力の差に応じて外筒の半径の異なるものが複数種類存在する。上記引き出し装置は、このような複数種類の張力バランサに柔軟に対応することができない。 By the way, among spring tension balancers, there are a plurality of types in which the outer cylinder has a different radius depending on the difference in tension. The drawer device cannot flexibly deal with such plural types of tension balancers.

したがって、本発明は、第１に、比較的、小型軽量で、取り扱いが容易であり、高所に上がった１人の作業者だけで装置の装着と引き出し操作を行うことができるばね式張力バランサの引き出し装置を提供することを目的としている。第２に、本発明は、支持アームと外筒との接続部の位置にかかわらず、内筒の所要の引き出し長さを得ることができるばね式張力バランサの引き出し装置を提供することを目的としている。第３に、本発明は、外筒の半径の異なる複数種類の張力バランサに柔軟に適用できるばね式張力バランサの引き出し装置を提供することを目的としている。 Therefore, the present invention is, firstly, a spring-type tension balancer that is relatively small and lightweight, easy to handle, and that can be installed and pulled out by only one worker who is elevated to a high place. The purpose of the present invention is to provide a drawer device. Secondly, an object of the present invention is to provide a pull-out device of a spring tension balancer capable of obtaining a required pull-out length of the inner cylinder regardless of the position of the connecting portion between the support arm and the outer cylinder. There is. Thirdly, an object of the present invention is to provide a pull-out device for a spring type tension balancer which can be flexibly applied to a plurality of types of tension balancers having different outer cylinder radii.

以下、添付図面の符号を参照して説明するが、本発明はこれに限定されるものではない。 The present invention will be described below with reference to the reference numerals in the accompanying drawings, but the present invention is not limited thereto.

上記第１の課題を解決するための、本発明の引き出し装置１は、外筒５２に離脱可能に懸架される取り付け部材２と、この取り付け部材２に離脱可能に支持され軸線を外筒５２の軸線と平行に向けたねじ軸４を外筒５２の先端方向へ突出させる一対のスクリュージャッキ３と、ねじ軸４を内筒５３の先端側に離脱可能に結合する連結部材５と、一対のスクリュージャッキ３を同時に駆動するための駆動軸６とを具備する。一対のスクリュージャッキ３は、互いのスプライン孔３２ａを外筒５２の軸線と直交する同一軸線上に配置させるように対向した駆動歯車３２をそれぞれ具備する。駆動軸６は、一端側に駆動操作部を具備し、駆動歯車３２のスプライン孔３２ａに抜き差し自在のスプライン軸からなる。 In order to solve the above-mentioned first problem, the drawer device 1 of the present invention includes a mounting member 2 which is detachably suspended by an outer cylinder 52, and an axis line of the outer cylinder 52 which is detachably supported by the mounting member 2. A pair of screw jacks 3 for projecting a screw shaft 4 oriented parallel to the axis toward the tip of the outer cylinder 52, a connecting member 5 for detachably coupling the screw shaft 4 to the tip of the inner cylinder 53, and a pair of screws. And a drive shaft 6 for driving the jack 3 at the same time. The pair of screw jacks 3 respectively include drive gears 32 facing each other so that the spline holes 32a are arranged on the same axis line orthogonal to the axis line of the outer cylinder 52. The drive shaft 6 is provided with a drive operation portion at one end side and is a spline shaft that can be inserted into and removed from the spline hole 32 a of the drive gear 32.

第２の課題を解決するための、本発明の引き出し装置１は、ねじ軸４が、連結部材５を介して内筒５３の先端側に結合される先端軸３７と、この先端軸３７における内筒５３の引き出し方向と反対方向の端に接続可能な延長軸３８とを具備する。 In the drawer device 1 of the present invention for solving the second problem, the screw shaft 4 is coupled to the distal end side of the inner cylinder 53 via the connecting member 5, and the inner end of the distal shaft 37. An extension shaft 38 that can be connected to the end of the cylinder 53 opposite to the pull-out direction is provided.

第３の課題を解決するための、本発明の引き出し装置１は、 取り付け部材２が、それぞれスクリュージャッキ３を保持し、外筒５２の半径方向に結合分離可能な第1及び第２の部材７，８と、外筒５２の半径の相違に対応して第1部材７と第２の部材８との間に選択的に介設されるスペーサ９とを具備する。 In the drawer device 1 of the present invention for solving the third problem, the attachment member 2 holds the screw jacks 3, respectively, and the first and second members 7 which can be coupled and separated in the radial direction of the outer cylinder 52. , 8 and a spacer 9 selectively interposed between the first member 7 and the second member 8 in accordance with the difference in the radius of the outer cylinder 52.

本発明のばね式張力バランサの引き出し装置１は、油圧装置および圧力シリンダを用いていないことから、比較的、小型軽量で、取り扱いが容易であり、高所に梯子で上がった１人の作業者だけで装置の装着と引き出し操作を行うことができる。 The spring tension balancer withdrawal device 1 according to the present invention is relatively small and lightweight because it does not use a hydraulic device and a pressure cylinder, and it is easy to handle. The device can be installed and pulled out by itself.

また、ねじ軸４に、先端軸３７と延長軸３８との接続構造を具備させることで、後方から新たな延長軸３８を次々と継ぎ足すことができるので、外筒５２と支持アーム５４との接続部の位置にかかわらず、内筒５３の所要の引き出し長さを得ることができる。 Further, by providing the screw shaft 4 with a connecting structure of the tip shaft 37 and the extension shaft 38, new extension shafts 38 can be replenished one after another from the rear side, so that the outer cylinder 52 and the support arm 54 can be connected. A required pull-out length of the inner cylinder 53 can be obtained regardless of the position of the connecting portion.

そのうえ、取り付け部材２が、第1及び第２の部材７，８とスペーサ９とを具備することで、外筒５２の半径の異なる複数種類の張力バランサ５１に引き出し装置１を柔軟に適用できるという効果を有する。 In addition, since the mounting member 2 includes the first and second members 7 and 8 and the spacer 9, the pulling device 1 can be flexibly applied to a plurality of types of tension balancers 51 having different radii of the outer cylinder 52. Have an effect.

ばね式張力バランサへ装着した状態の引き出し装置の正面図である。It is a front view of the drawer|drawer apparatus in the state mounted|worn with the spring type tension balancer. 図１の引き出し装置の側面図である。It is a side view of the drawer apparatus of FIG. 図１の引き出し装置の平面図である。It is a top view of the drawer|drawing-out apparatus of FIG. 図１の引き出し装置における取り付け部材の正面図である。It is a front view of the attachment member in the drawer apparatus of FIG. 図４の取り付け部材の右側面図である。It is a right view of the attachment member of FIG. 図４の取り付け部材の左側面図である。5 is a left side view of the attachment member of FIG. 4. FIG. 図４の取り付け部材の平面図である。It is a top view of the attachment member of FIG. 図１の引き出し装置におけるスクリュージャッキの正面図である。It is a front view of the screw jack in the drawer of FIG. 図１の引き出し装置におけるスクリュージャッキの背面図である。It is a rear view of the screw jack in the drawer apparatus of FIG. 図１の引き出し装置におけるスクリュージャッキの側面図である。It is a side view of the screw jack in the drawer of FIG. 図１の引き出し装置におけるスクリュージャッキの平面図である。It is a top view of the screw jack in the drawer of FIG. 図１の引き出し装置におけるねじ軸の断面図である。It is sectional drawing of the screw shaft in the drawer apparatus of FIG. 図１の引き出し装置のねじ軸における先端軸の断面図である。It is sectional drawing of the front-end|tip shaft in the screw shaft of the drawer apparatus of FIG. 図１の引き出し装置のねじ軸における延長軸の断面図である。It is sectional drawing of the extension shaft in the screw shaft of the drawer apparatus of FIG.

図面を参照して本発明の実施の形態を説明する。
ちょう架線、き電ちょう架線、トロリ線等の電車線路用の架空線は、所定径間の両端において、ばね式張力バランサ５１を介して支持構造物に引き止められる。図１に示すように、ばね式張力バランサ５１は、基端（左端）側が支持構造物の高所に係止される外筒５２と、この外筒５２内に入れ子式に嵌挿され先端が外筒５２の先端（右端）側へ突出するように配置される内筒５３とを備える。以下、外筒５２の軸線方向基端側を後方、先端側を前方として説明する。 An embodiment of the present invention will be described with reference to the drawings.
Overhead lines for electric lines, such as a catenary line, a feeder line, and a trolley line, are held by a support structure via spring tension balancers 51 at both ends of a predetermined span. As shown in FIG. 1, a spring tension balancer 51 has an outer cylinder 52 whose base end (left end) side is locked at a high place of a support structure, and a telescopic insert which is telescopically inserted into the outer cylinder 52. The outer cylinder 52 is provided with an inner cylinder 53 arranged so as to project toward the tip (right end) side. Hereinafter, the axial direction proximal end side of the outer cylinder 52 will be described as rear and the distal end side as front.

外筒５２は、ばねを内蔵し、このばねにより内筒５３を外筒の基端側へ引き込む方向に付勢する。ばね式張力バランサ５１は、斜め支持アーム５４等を介して軸線をほぼ水平に向けて支持構造物の高所に支持され、内筒５３の先端側に接続される架空線が温度変化等により伸縮しても、ばねの弾性により当該架空線に一定の張力を付与する。 The outer cylinder 52 has a built-in spring, and the spring urges the inner cylinder 53 in a direction to draw the inner cylinder 53 toward the base end side of the outer cylinder. The spring tension balancer 51 is supported at a high place of the support structure with its axis oriented substantially horizontally via the diagonal support arm 54 and the like, and the overhead wire connected to the tip side of the inner cylinder 53 expands and contracts due to temperature changes and the like. Even so, the elasticity of the spring applies a constant tension to the overhead wire.

引き出し装置１は、高所に設置されているばね式張力バランサ５１に装着されるもので、当該バランサ５１の内筒５３を外筒５２の先端側から所定位置まで引き出すことにより、その張力を調整する作業を行うための装置である。 The drawer 1 is mounted on a spring tension balancer 51 installed at a high place, and the tension is adjusted by drawing the inner cylinder 53 of the balancer 51 from the tip end side of the outer cylinder 52 to a predetermined position. It is a device for performing the work.

図１ないし図３において、引き出し装置１は、張力バランサ５１の外筒５２に懸架される取り付け部材２と、この取り付け部材２に支持される一対のスクリュージャッキ３と、スクリュージャッキ３のねじ軸４を内筒５３の先端側のクレビス５５に結合する連結部材５と、一対のスクリュージャッキ３を同時に駆動するための駆動軸６（図２，図３）とを具備する。 1 to 3, a pulling device 1 includes a mounting member 2 suspended on an outer cylinder 52 of a tension balancer 51, a pair of screw jacks 3 supported by the mounting member 2, and a screw shaft 4 of the screw jack 3. Is provided with a connecting member 5 for connecting the clevis 55 to the clevis 55 on the tip side of the inner cylinder 53, and a drive shaft 6 (FIGS. 2 and 3) for simultaneously driving the pair of screw jacks 3.

スクリュージャッキ３は、ねじ軸４の軸線を外筒５２の軸線と平行に向け、ねじ軸４を外筒５２の先端方向（前方）へ突出させるように、外筒５２の軸線直交方向両側（左右）に位置して、取り付け部材２に装着される。各部材は、張力バランサ５１が設置された高所まで個別に持ち上げられ、張力バランサ５１上へ組み付けられ、使用済み後は取り外して回収される。 The screw jack 3 directs the axis of the screw shaft 4 to be parallel to the axis of the outer cylinder 52, and projects the screw shaft 4 in the front end direction (forward) of the outer cylinder 52 so that both sides (left and right) in the direction orthogonal to the axis of the outer cylinder 52. ), and is attached to the attachment member 2. Each member is individually lifted to a high place where the tension balancer 51 is installed, assembled on the tension balancer 51, and removed and collected after use.

図４ないし図７に示すように、取り付け部材２は、外筒５２の軸線直交方向左右に２分割される第1部材７及び第２の部材８と、両部材間に介設されるスペーサ９とをボルト１０にて結合してなる。第1部材７と第２の部材８は、それぞれスクリュージャッキ３を保持し、外筒５２の半径方向に結合分離可能であり、外筒５２の半径の相違に対応して第1部材７と第２の部材８との間に選択的にスペーサ９が介設される。 As shown in FIGS. 4 to 7, the mounting member 2 includes a first member 7 and a second member 8 which are divided into two parts on the left and right in a direction orthogonal to the axis of the outer cylinder 52, and a spacer 9 interposed between the two members. And are connected with a bolt 10. The first member 7 and the second member 8 respectively hold the screw jack 3 and can be coupled and separated in the radial direction of the outer cylinder 52. A spacer 9 is selectively interposed between the second member 8 and the second member 8.

取り付け部材２は、外筒５２の先端側の外周上部に掛け止められる切欠リング状の掛止部１１と、掛止部１１の前端に固着される当接板部１２と、これと対向して掛止部１１の後端に固着される後端板部１３とを具備する。 The mounting member 2 includes a cutout ring-shaped hooking portion 11 that is hooked on the outer peripheral upper portion of the outer cylinder 52 on the distal end side, an abutting plate portion 12 that is fixed to the front end of the hooking portion 11, and is opposed to this. The rear end plate portion 13 fixed to the rear end of the hook portion 11 is provided.

図２，図５に示すように、掛止部１１は、下方に開放した切欠リング状で、外筒５２の先端側の外周に着脱自在に嵌合する。当接板部１２は、掛止部１１の前端面に固着され、円弧状の凹部１４と、左右一対のジャッキ支持部１５とを具備する。円弧状凹部１４の縁は、掛止部１１の前端から半径方向内側へ張り出して、外筒５２の前端に当接する内側フランジ部１６を形成する。ジャッキ支持部１５は、外筒５２の左右両側へ張り出し、外筒５２の水平半径方向外側に開く円弧状の切欠１７を具備する。 As shown in FIGS. 2 and 5, the hook portion 11 has a notched ring shape that opens downward and is detachably fitted to the outer periphery of the outer cylinder 52 on the distal end side. The contact plate portion 12 is fixed to the front end surface of the hook portion 11, and includes an arc-shaped recess 14 and a pair of left and right jack support portions 15. The edge of the arcuate recess 14 extends radially inward from the front end of the hook portion 11 to form an inner flange portion 16 that abuts on the front end of the outer cylinder 52. The jack support portion 15 has arcuate cutouts 17 that project to the left and right sides of the outer cylinder 52 and that open outward in the horizontal radial direction of the outer cylinder 52.

図６に示すように、後端板部１３は、当接板部１２と概略同一形状で、当接板部１２に対応する円弧状の凹部１８、ジャッキ支持部１９、円弧状の切欠２０を具備する。円弧状の凹部１８は、外筒５２の外周上に乗る曲率である。切欠２０は切欠１７と対向し、両者の縁部間が切欠円筒部２１で接続される。 As shown in FIG. 6, the rear end plate portion 13 has substantially the same shape as the contact plate portion 12, and has an arc-shaped recess 18, a jack support portion 19, and an arc-shaped notch 20 corresponding to the contact plate portion 12. To prepare. The arcuate recess 18 has a curvature that rides on the outer circumference of the outer cylinder 52. The notch 20 faces the notch 17, and the edges of both are connected by a notch cylindrical portion 21.

図８ないし図１０に示すように、左右一対のスクリュージャッキ３は、基本的に同一構造で、ケーシング２２に内装されたウオーム２３、ウオームホイール２４により、ねじ軸４を軸線方向に進退させるものである。 As shown in FIGS. 8 to 10, the pair of left and right screw jacks 3 have basically the same structure, and the screw shaft 4 is advanced and retracted in the axial direction by a worm 23 and a worm wheel 24 installed in the casing 22. is there.

ケーシング２２は、基板２５上に組み付けられ、ウオーム支持部２６とウオームホイール支持部２７とを具備する。基板２５は、取り付け部材２の当接板部１２の前面の所定位置にプランジャピン２８（図５における受け孔１２ａに挿通）で位置決めして接合される。 The casing 22 is mounted on the substrate 25 and includes a worm support portion 26 and a worm wheel support portion 27. The substrate 25 is positioned and joined to a predetermined position on the front surface of the abutting plate portion 12 of the mounting member 2 by a plunger pin 28 (which is inserted into the receiving hole 12a in FIG. 5).

ウオーム支持部２６は、基板２５と、これと平行に間隔をおいて対向する前面板２９と、両板２５，２９と共に矩形枠を形成する平行一対の軸受け板３０，３１とを具備する。 The worm support 26 includes a substrate 25, a front plate 29 facing the substrate 25 in parallel with a space therebetween, and a pair of parallel bearing plates 30 and 31 forming a rectangular frame together with the plates 25 and 29.

軸受け板３０，３１間にウオーム２３が支持され、一方の軸受け板３０に支持された駆動歯車３２に連動して回転する。駆動歯車３２は、軸受け板３０を貫通する挿通孔を介して外側に通じるスプライン孔３２ａ（図８，図９）を具備する。駆動歯車３２は、スプライン孔３２ａに挿通される駆動軸６（図２，図３）により駆動される。 The worm 23 is supported between the bearing plates 30 and 31, and rotates in conjunction with the drive gear 32 supported by one bearing plate 30. The drive gear 32 includes a spline hole 32a (FIGS. 8 and 9) that communicates with the outside through an insertion hole that penetrates the bearing plate 30. The drive gear 32 is driven by the drive shaft 6 (FIGS. 2 and 3) inserted through the spline hole 32a.

ウオームホイール支持部２７は、基板１９と、それの前面側に固定される円筒状のホイールカバー３３と、それの前面側を閉じる端板３４と、ガイド筒部３５（図８，図９）とを具備する。 The worm wheel support portion 27 includes a substrate 19, a cylindrical wheel cover 33 fixed to the front surface side thereof, an end plate 34 closing the front surface side thereof, and a guide tube portion 35 (FIGS. 8 and 9). It is equipped with.

円筒状のホイールカバー３３は、軸線を基板１９と直交する前後方向に向けて基板１９に固定される。ガイド筒部３５は、ホイールカバー３３と同心で、ホイールカバー３３から基板１９を貫通して後方へ延出する。ねじ軸４は、ホイールカバー３３を貫通し、その内側においてウオームホイール２４の内歯車に噛み合うように前後方向に挿通される。 The cylindrical wheel cover 33 is fixed to the substrate 19 with its axis oriented in the front-back direction orthogonal to the substrate 19. The guide tube portion 35 is concentric with the wheel cover 33, penetrates the substrate 19 from the wheel cover 33, and extends rearward. The screw shaft 4 penetrates the wheel cover 33 and is inserted in the front-rear direction so as to mesh with the internal gear of the worm wheel 24 inside thereof.

ねじ軸４は、内筒５３の必要な引き出し長さに応じて、１本で構成することができるが、図１２ないし図１４に示す実施形態においては、先端軸３７と延長軸３８とで構成される。 The screw shaft 4 can be constructed as a single screw shaft 4 according to the required drawing length of the inner cylinder 53. However, in the embodiment shown in FIGS. 12 to 14, the screw shaft 4 is constituted by the tip shaft 37 and the extension shaft 38. To be done.

先端軸３７は、先端にクレビス３６を具備し、延長軸３８は、先端軸３７の後端に接続分離可能である。延長軸３８は、さらにその後端に接続分離可能な他の単一又は複数のもので構成することができる。 The tip shaft 37 has a clevis 36 at its tip, and the extension shaft 38 is connectable and separable at the rear end of the tip shaft 37. Further, the extension shaft 38 may be composed of another single or a plurality of ones that can be connected/disconnected at the rear end.

図１２，１３に示すように、先端軸３７は、後端部に、キー溝付き軸穴３９と、これと同心で、これより小径のねじ穴４０とを具備する。図１２，１４に示すように、延長軸３８は、軸本体４１と連結ボルト４２とを具備する。 As shown in FIGS. 12 and 13, the front end shaft 37 is provided with a keyway shaft hole 39 and a screw hole 40 concentric therewith and having a smaller diameter than the shaft hole 39 at the rear end. As shown in FIGS. 12 and 14, the extension shaft 38 includes a shaft body 41 and a connecting bolt 42.

軸本体４１は、後端側に、先端軸３７と同様のキー溝付き軸穴４３、ねじ穴４４と、これに連続して全長にわたるボルト受け孔４５を具備すると共に、先端部に軸穴３９に嵌合するキー付き凸軸４６を具備する。連結ボルト４２は、６角穴付きのボルト本体４７と、それの先端部に螺合されるねじ筒４８とを具備する。ボルト本体４７が、ボルト受け孔４５に回転自在に挿通され、軸本体４１の先端側へ突出した先端部に、ねじ筒４８が螺合固定される。ねじ筒４８は、ボルト本体４７と一体に軸周り回転することにより、先端軸３７のねじ穴４０に螺合する。 The shaft body 41 is provided with a shaft hole 43 with a key groove similar to the front shaft 37, a screw hole 44 on the rear end side, and a bolt receiving hole 45 which is continuous with the shaft hole 43 and extends over the entire length thereof. And a convex shaft 46 with a key that fits in. The connecting bolt 42 includes a bolt main body 47 having a hexagonal hole, and a screw cylinder 48 screwed to a tip portion of the bolt main body 47. The bolt main body 47 is rotatably inserted into the bolt receiving hole 45, and the screw cylinder 48 is screwed and fixed to the tip end portion of the shaft main body 41 protruding toward the tip end side. The screw cylinder 48 is screwed into the screw hole 40 of the tip shaft 37 by rotating around the shaft integrally with the bolt body 47.

図３に示すように、連結部材５は、内筒５３の先端に設けられたクレビス５５の二股部間を貫通して内筒５３の軸線直交方向に伸び、一対のねじ軸４の先端クレビス３６間に支持される。内筒５３のクレビス５５は、絶縁部材を介して架空線の端部に接続される。 As shown in FIG. 3, the connecting member 5 penetrates between the forks of the clevis 55 provided at the tip of the inner cylinder 53 and extends in the direction orthogonal to the axis of the inner cylinder 53, and the tip clevis 36 of the pair of screw shafts 4 is provided. Supported in between. The clevis 55 of the inner cylinder 53 is connected to the end of the overhead wire via an insulating member.

図１ないし図３に示すように、一対のスクリュージャッキ３は、それぞれプランジャピン２８を当接板部１２の受け孔１２ａに挿通させると共に、ガイド筒部３５を切欠円筒部２１に嵌合させて、取り付け部材２のジャッキ支持部１５に装着される。これにより、一対のスクリュージャッキ３は、互いに駆動歯車３２のスプライン孔３２ａ（図１）の軸線を外筒５２の軸線直交方向に合致させて取り付け部材２の前面側に装着される。 As shown in FIGS. 1 to 3, in the pair of screw jacks 3, the plunger pin 28 is inserted into the receiving hole 12a of the abutting plate portion 12, and the guide cylinder portion 35 is fitted into the notched cylinder portion 21. , Is attached to the jack support portion 15 of the attachment member 2. Accordingly, the pair of screw jacks 3 are mounted on the front surface side of the mounting member 2 such that the axes of the spline holes 32a (FIG. 1) of the drive gear 32 are aligned with each other in the direction orthogonal to the axis of the outer cylinder 52.

駆動軸６は、一対のスクリュージャッキ３の合致したスプライン孔３２ａに抜き差し自在に挿入されるスプライン軸からなり、一端側に、チェーンスプロケット６ａのような駆動操作部を具備する。駆動操作部は、これに限らず、レンチ係合部等、高所において作業者が単独で回転操作可能な他の種々の具体的形態を採用しうる。 The drive shaft 6 is composed of a spline shaft that is inserted into and removed from the spline holes 32a of the pair of screw jacks 3 that match each other, and is provided with a drive operation unit such as a chain sprocket 6a on one end side. The drive operation section is not limited to this, and various other specific forms such as a wrench engagement section that can be independently rotated by an operator at a high place can be adopted.

取り付け部材２、スクリュージャッキ３を張力バランサ５１の外筒５２上に装着した後、合致したスプライン孔３２ａに駆動軸６を挿通し、これを回転させると、駆動歯車３２、ウオーム２３、ウオームホイール２４を介して、ねじ軸４が前後方向に進退する。 After the mounting member 2 and the screw jack 3 are mounted on the outer cylinder 52 of the tension balancer 51, the drive shaft 6 is inserted into the matched spline hole 32a, and when this is rotated, the drive gear 32, the worm 23, and the worm wheel 24. The screw shaft 4 advances and retracts in the front-rear direction via the.

例えば、架空線を新設する場合には、高所に設置され、未だ架空線に接続されていない張力バランサ５１に引き出し装置１を装着し、内筒５３のクレビス５５に接続されたねじ軸４を前方へ押し出すことにより、架空線に対する所要の張力が得られる所定位置まで、ばね力に抗して内筒５３を外筒５２から引き出す。 For example, when a new overhead wire is installed, the pull-out device 1 is attached to the tension balancer 51 installed at a high place and not yet connected to the overhead wire, and the screw shaft 4 connected to the clevis 55 of the inner cylinder 53 is attached. By pushing it forward, the inner cylinder 53 is pulled out from the outer cylinder 52 against the spring force to a predetermined position where a required tension with respect to the overhead wire is obtained.

このとき、内筒５３の所要の引き出し長さに対して、ねじ軸４の先端軸３７の長さが不足する場合には、先端軸３７の最大突出長さ近くまで突出させた後、その後端に延長軸３８を接続する。それでも不足する場合は、当該延長軸３８の後端部付近までねじ軸４全体を突出させたうえ、追加の延長軸３８を接続する。延長軸３８により先端軸３７を前方へ押し出すことで、所要の引き出し長さを容易に確保することができる。各延長軸３８は、接続時に張力バランサ５１の支持アーム５４との接続部に干渉しない長さに設定されるから、作業に支障は生じない。 At this time, when the length of the tip shaft 37 of the screw shaft 4 is insufficient with respect to the required pull-out length of the inner cylinder 53, after the tip shaft 37 is made to project close to the maximum projection length, the rear end The extension shaft 38 is connected to. If the shortage still occurs, the entire screw shaft 4 is projected to the vicinity of the rear end portion of the extension shaft 38, and then the additional extension shaft 38 is connected. By pushing the tip shaft 37 forward by the extension shaft 38, a required pull-out length can be easily ensured. Since each extension shaft 38 is set to a length that does not interfere with the connection portion of the tension balancer 51 with the support arm 54 when connected, there is no hindrance to the work.

内筒５３を所定長さ引き出した後、クレビス５５を架空線に連結して、ねじ軸４を後退させ、引き出し装置１を張力バランサ５１から取り外せば、架空線は、張力バランサ５１により、所定の張力で支持構造物に引き止められる。 After pulling out the inner cylinder 53 for a predetermined length, the clevis 55 is connected to the overhead wire, the screw shaft 4 is retracted, and the pulling device 1 is detached from the tension balancer 51. It is held by the support structure under tension.

本発明を活用する状況について補足する。電車線路用の架空線は、勾配箇所において全体が下方へ流れたり、温度変化で想定以上に伸縮したりすることがある。その結果、架空線支持部材の位置が変わり、あるいは張力が変化する。これは集電性能や、設備の摩耗に影響するので、是正する必要がある。この場合、従来は予め架空線と張力バランサ５１との間に介設されているターンバックルを操作し、実質的に架空線の長さを変更（おおむね10〜30ｃｍ程度）することで対応しているが、張力がかかった状態でターンバックルを回転するのは難しいことから、作業の前にターンバックルの両側間を引き寄せ装置で引き寄せて、ターンバックルへの張力をなくす必要がある。それ自体、作業が煩雑であるばかりでなく、引き寄せ装置の接続箇所で架空線が変形した場合、その矯正作業が必要である。これに対して、本発明の引き出し装置１を用いれば、引き寄せ装置等を用いることなく、内筒５３の引き出し長さを変更することで、下方に流れた架線全体を勾配の上方へ戻すことや、適正な架空線の張力調整を行うことができる。 A supplementary description will be given of the situation in which the present invention is utilized. An overhead line for a train track may flow entirely downward at a slope or may expand or contract more than expected due to temperature changes. As a result, the position of the overhead wire support member changes or the tension changes. This affects current collection performance and equipment wear, so it is necessary to correct it. In this case, conventionally, by operating a turnbuckle provided between the overhead wire and the tension balancer 51 in advance, the length of the overhead wire is substantially changed (approximately 10 to 30 cm). However, since it is difficult to rotate the turnbuckle under tension, it is necessary to pull the turnbuckle between the two sides of the turnbuckle with a pulling device before work to eliminate the tension on the turnbuckle. As such, not only the work is complicated, but also when the overhead line is deformed at the connection position of the drawing device, the correction work is required. On the other hand, if the pulling-out device 1 of the present invention is used, by changing the pulling-out length of the inner cylinder 53 without using a pulling device or the like, the whole overhead wire that has flowed downward can be returned to the upper part of the slope. Therefore, the tension of the overhead wire can be properly adjusted.

以上説明した引き出し装置１は、種々の目的に使用できる汎用性を持つが、いずれの場合にも、引き寄せ装置などを架空線に接続して行う引き寄せ工程を要することなく、直接架空線の張力調整を行うことができる。適用される架空線は電車線路用のものに限定されない。 The drawer device 1 described above has versatility that it can be used for various purposes, but in any case, the tension of the overhead wire is directly adjusted without the need for a drawing step performed by connecting the drawing device or the like to the overhead wire. It can be performed. The overhead line to be applied is not limited to the one for train tracks.

１ 引き出し装置
２ 取り付け部材
３ スクリュージャッキ
４ ねじ軸
５ 連結部材
６ 駆動軸
７ 第１部材
８ 第２部材
９ スペーサ
１０ ボルト
１１ 掛止部
１２ 当接板部
１２ａ ピン受け穴
１３ 後端板部
１４ 円弧状凹部
１５ ジャッキ支持部
１６ 内側フランジ部
１７ 円弧状切欠
１８ 円弧状凹部
１９ ジャッキ支持部
２０ 円弧状凹部
２１ 切欠円筒部
２２ ケーシング
２３ ウオーム
２４ ウオームホイール
２５ 基板
２６ ウオーム支持部
２７ ウオームホイール支持部
２８ プランジャピン
２９ 前面板
３０ 軸受け板
３１ 軸受け板
３２ 駆動歯車
３２ａ スプライン孔
３３ ホイールカバー
３４ 端板
３５ ガイド筒部
３６ クレビス
３７ 先端軸
３８ 延長軸
３９ キー付き軸穴
４０ ねじ穴
４１ 軸本体
４２ 連結ボルト
４３ キー付き軸穴
４４ ねじ穴
４５ ボルト受け孔
４６ キー付き凸軸
４７ ボルト本体
４８ ねじ筒
５１ ばね式張力バランサ
５２ 外筒
５３ 内筒
５４ 斜め支持アーム
５５ クレビス DESCRIPTION OF SYMBOLS 1 Drawer 2 Mounting member 3 Screw jack 4 Screw shaft 5 Connecting member 6 Drive shaft 7 First member 8 Second member 9 Spacer 10 Bolt 11 Locking part 12 Contact plate part 12a Pin receiving hole 13 Rear end plate part 14 Circle Arc-shaped recess 15 Jack support 16 Inner flange 17 Arc-shaped notch 18 Arc-shaped recess 19 Jack support 20 Arc-shaped recess 21 Notched cylinder 22 Casing 23 Worm 24 Worm wheel 25 Substrate 26 Worm support 27 Worm wheel support 28 Plunger Pin 29 Front plate 30 Bearing plate 31 Bearing plate 32 Drive gear 32a Spline hole 33 Wheel cover 34 End plate 35 Guide cylinder 36 Clevis 37 Tip shaft 38 Extension shaft 39 Keyed shaft hole 40 Screw hole 41 Shaft body 42 Connecting bolt 43 Key Attached shaft hole 44 Screw hole 45 Bolt receiving hole 46 Keyed convex shaft 47 Bolt body 48 Screw cylinder 51 Spring type tension balancer 52 Outer cylinder 53 Inner cylinder 54 Oblique support arm 55 Clevis

Claims (3)

ばねを内蔵し基端側が支持構造物の高所に係止される外筒と、この外筒内に入れ子式に嵌挿され先端が外筒の先端側へ突出するように配置され前記ばねにより前記外筒の基端側へ引き込む方向に付勢される内筒とを備え、この内筒の先端側に架空線が接続されるばね式張力バランサの当該内筒の先端側を所定位置まで前記外筒の先端側から引き出すための装置であって、
前記外筒に離脱可能に懸架される取り付け部材と、この取り付け部材に離脱可能に支持され軸線を前記外筒の軸線と平行に向けたねじ軸を前記外筒の先端方向へ突出させる一対のスクリュージャッキと、前記ねじ軸を前記内筒の先端側に離脱可能に結合する連結部材と、前記一対のスクリュージャッキを同時に駆動するための駆動軸とを具備し、
前記一対のスクリュージャッキは、互いのスプライン孔を前記外筒の軸線と直交する同一軸線上に配置させるように対向した駆動歯車をそれぞれ具備し、
前記駆動軸は、一端側に駆動操作部を具備し、前記駆動歯車のスプライン孔に抜き差し自在のスプライン軸からなることを特徴とする架空線のばね式張力バランサの引き出し装置。 An outer cylinder having a built-in spring, the base end side of which is locked at a high place of the support structure, and a telescopically inserted outer cylinder arranged so that the tip projects toward the tip side of the outer cylinder. An inner cylinder that is biased in a direction of pulling toward the base end side of the outer cylinder, and a tip end side of the inner cylinder of the spring type tension balancer in which an overhead wire is connected to a front end side of the inner cylinder to a predetermined position. A device for pulling out from the tip side of the outer cylinder,
A mounting member that is detachably suspended on the outer cylinder, and a pair of screws that releasably supported by the mounting member and project a screw shaft whose axis is parallel to the axis of the outer cylinder toward the tip of the outer cylinder. A jack, a connecting member that detachably connects the screw shaft to the distal end side of the inner cylinder, and a drive shaft for simultaneously driving the pair of screw jacks,
The pair of screw jacks respectively include drive gears facing each other so that mutual spline holes are arranged on the same axis orthogonal to the axis of the outer cylinder,
The pull-out device for an overhead wire spring tension balancer, wherein the drive shaft is provided with a drive operating portion at one end side and is a spline shaft that can be inserted into and removed from a spline hole of the drive gear. 前記ねじ軸は、前記連結部材を介して前記内筒の先端側に結合される先端軸と、この先端軸における前記内筒の引き出し方向と反対方向の端に接続可能な延長軸とを具備することを特徴とする請求項１に記載の架空線のばね式張力バランサの引き出し装置。 The screw shaft includes a tip shaft coupled to the tip side of the inner cylinder via the connecting member, and an extension shaft connectable to an end of the tip shaft in a direction opposite to the pull-out direction of the inner cylinder. The pull-out device for a spring tension balancer of an overhead wire according to claim 1. 前記取り付け部材は、それぞれスクリュージャッキを保持し、前記外筒の半径方向に結合分離可能な第1及び第２の部材と、前記外筒の半径の相違に対応して第1部材と第２の部材との間に選択的に介設されるスペーサとを具備することを特徴とする請求項１又は２に記載の架空線のばね式張力バランサの引き出し装置。 The mounting members respectively hold screw jacks and can be coupled and separated in the radial direction of the outer cylinder, and the first member and the second member corresponding to the difference in radius of the outer cylinder. 3. A pull-out device for an overhead wire spring tension balancer according to claim 1, further comprising a spacer selectively interposed between the member and the member.
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JP7182491B2 (en) * 2019-02-13 2022-12-02 日本電設工業株式会社 Drawer transfer device for spring tension balancer

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JPS6038611A (en) * 1983-08-12 1985-02-28 Japanese National Railways<Jnr> Trolley wire detecting/measuring truck
JPH07180481A (en) * 1993-12-24 1995-07-18 Komatsu Ltd Propulsion unit for small-diameter pipe propulsion machine
JP3041388U (en) * 1997-01-23 1997-09-19 金男 村上 Chain drive lift
JP3753402B2 (en) * 1997-05-23 2006-03-08 三和テッキ株式会社 Tension balancer display board device
JP5203051B2 (en) * 2008-06-05 2013-06-05 日本発條株式会社 Overhead wire tension balancer device and lubricating oil scattering prevention device
JP5275061B2 (en) * 2009-01-30 2013-08-28 東日本旅客鉄道株式会社 Pull-out device for spring-type tension balancer for overhead wire for train line, recovery device for broken overhead wire for train line, and method for restoring broken overhead wire for train line using the same
JP5275065B2 (en) * 2009-02-03 2013-08-28 東日本旅客鉄道株式会社 Tension adjusting device for temporary installation on train tracks

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