JP4461065B2 - Bushing removal jig - Google Patents
Bushing removal jig Download PDFInfo
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- JP4461065B2 JP4461065B2 JP2005187448A JP2005187448A JP4461065B2 JP 4461065 B2 JP4461065 B2 JP 4461065B2 JP 2005187448 A JP2005187448 A JP 2005187448A JP 2005187448 A JP2005187448 A JP 2005187448A JP 4461065 B2 JP4461065 B2 JP 4461065B2
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- bushing
- gripping
- clamping action
- clamping
- action part
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本発明は柱上変圧器のブッシング取外治具に係り、より詳細にはブッシング取付フランジを変形させずにブッシングを取外すことのできる治具に関する。 The present invention relates to a bushing removal jig for a pole transformer, and more particularly to a jig capable of removing a bushing without deforming a bushing mounting flange.
柱上変圧器の正常な作動を維持するためには定期的なオーバーホールが不可欠である。オーバーホール時には柱上変圧器を分解するが、このとき特にブッシングの取外しが問題となる。
ブッシングとフランジとの間には、雨などの浸入を防ぐためにガスケットが挟まれている。ブッシングとガスケットとフランジとは互いに接着剤を用いて接着されているので、ブッシングは容易には取外すことができない。
Regular overhaul is essential to maintain the normal operation of the pole transformer. When overhauling, the pole transformer is disassembled. At this time, removal of the bushing becomes a problem.
A gasket is sandwiched between the bushing and the flange to prevent rain and the like from entering. Since the bushing, the gasket, and the flange are bonded to each other using an adhesive, the bushing cannot be easily removed.
したがって、ブッシング取外作業の際には、まず蓋部分を取外した柱上変圧器ケースの上部から梃子を差し込んでブッシングにあてがい、こねてフランジと剥離する方法や、ガスケットにマイナスドライバ等の先端部を打ち込んでブッシングとフランジとを剥離する方法が採られていた。 Therefore, when removing the bushing, first insert the insulator from the top of the pole transformer case with the lid removed and place it on the bushing, knead it off the flange, A method has been employed in which the bushing and the flange are peeled off.
ところで、部品等の取外しが人間の手や指先では困難な場合、ヤットコやペンチ等に倣った構造の工具が一般に用いられている。特許文献１に記載の工具はその一例である。このような、２つの部材を回動可能に枢着してなる工具を利用すれば、作業者は少ない力を込めるだけで能率的に作業を行うことができる。
従来のブッシング取外方法によれば、大きな力が加わるのでフランジに変形が生じてしまい、これを修正する作業が必要であった。
また、フランジの修正作業は熟練を要するため、作業者が限定され、作業効率が悪いという問題があった。
According to the conventional bushing removing method, since a large force is applied, the flange is deformed, and it is necessary to correct this.
Further, since the flange correction work requires skill, there are problems that the number of workers is limited and the work efficiency is poor.
上記の課題を解決するために本発明が提供するのは、一端側に握持操作部を設け、他端側に太い（幅広い）先端部を有する挟持作用部を設けた一対の挟持半体を回動可能に交叉枢着してなる柱上変圧器のフランジに取付けられたブッシングを取外すブッシング取外治具であって、握持操作部と挟持作用部とは重くない操作し易い太さで細く、挟持作用部はブッシングを跨ぐように両側に延在して先端に挟持内方向に突出した鉤状の鋭利な把持爪を有し、当該把持爪が挟持する両側で並行に一定の幅で挟持操作部や挟持作用部の細い部分より太く（幅広く）形成され、握持操作部を外方向に操作すると挟持作用部が離隔し、握持操作部を内方向に操作すると挟持作用部が接近するように設け、把持爪をブッシングの接合部分に食い込ませた状態を保持したまま当該把持爪の左右いずれかの一端部をフランジに当接させて支点とし他端部をブッシングに当接させて作用点とした方向に倒す動作によりブッシングを剥離（取外し）できるように設ける。
ここで、このブッシング取外治具は、少なくとも挟持作用部が鋼等の粘性（靭性）を有する金属より成る。
In order to solve the above problems, the present invention provides a pair of clamping halves provided with a gripping operation part on one end side and a clamping action part having a thick (wide) tip on the other end side. What bushing ToSotoji instrument der to remove the bushing mounted on the rotatable cross pivoted to pole transformer flange comprising, easily thickness operate not heavy and grip operation portion and the holding action part The pinching action part has a hook-shaped sharp gripping claw that extends to both sides so as to straddle the bushing and protrudes in the clamping inward direction, and has a constant width in parallel on both sides of the gripping claw Is formed thicker (wider) than the narrow part of the clamping operation part and the clamping action part. When the gripping operation part is operated outward, the clamping action part is separated, and when the gripping operation part is operated inward, the clamping action part is provided so as to approach was bite into gripping claws to the joint portion of the bushing state While holding, the bushing can be peeled (removed) by moving the gripping claw to the flange with one end on either side of the gripping claw as a fulcrum and the other end against the bushing. Provide.
Here, this bushing removing jig is made of a metal having a viscosity (toughness) such as at least a sandwiching action portion.
本発明によれば、フランジを変形させずにブッシングを取外すことができるので、取外作業の後で変形を修正する作業を行う必要がない。
また、ブッシング取付フランジのガスケット当たり面を傷つけることなくブッシングを取外すことができる上、梃子の原理を利用して少しの力で取外作業を行うことが可能である。
さらに、いずれの製造会社が製造した柱上変圧器またはブッシングであっても適用できる。
According to the present invention, since the bushing can be removed without deforming the flange, it is not necessary to perform an operation of correcting the deformation after the removing operation.
Further, the bushing can be removed without damaging the gasket contact surface of the bushing mounting flange, and the removing operation can be performed with a little force by utilizing the principle of the lever.
Furthermore, any transformer or bushing manufactured by any manufacturing company can be applied.
本発明の実施形態を図面を参照して説明する。
図１（ａ）は柱上変圧器（１）の側面図、図１（ｂ）はこの柱上変圧器（１）のブッシング取付部を拡大した図である。同図に示すように、ブッシング（３）はフランジ（２）に取付けられており、ブッシング（３）とフランジ（２）との間には雨などの浸入を防ぐためのガスケット（４）が挟まれている。前述したとおり、ブッシング（３）とガスケット（４）とフランジ（２）とは接着剤により接着され、容易には剥離できない。
Embodiments of the present invention will be described with reference to the drawings.
FIG. 1A is a side view of the pole transformer (1), and FIG. 1B is an enlarged view of the bushing mounting portion of the pole transformer (1). As shown in the figure, the bushing (3) is attached to the flange (2), and a gasket (4) is inserted between the bushing (3) and the flange (2) to prevent rain and the like from entering. It is. As described above, the bushing (3), the gasket (4), and the flange (2) are bonded by an adhesive and cannot be easily peeled off.
図２に示すのは、本発明によるブッシング取外治具である。図２（ａ）に示すように、ブッシング取外治具（５）は枢着部（９）で回動可能に枢着された一対の挟持半体より構成される。作業者は握持操作部（６）を握って治具の操作を行う。挟持作用部（７）は取外作業時にブッシングを挟み込む部分である。 FIG. 2 shows a bushing removal jig according to the present invention. As shown in FIG. 2 (a), the bushing removal jig (5) is composed of a pair of sandwiching halves pivotally attached to the pivot attachment portion (9). The operator operates the jig by grasping the grip operation part (6). The pinching action part (7) is a part for pinching the bushing during the removing operation.
挟持作用部（７）は、先端に挟持内方向に突出した把持爪（８）を有する。把持爪（８）は刃物のように鋭利な先端部を有し、フランジとブッシングとに挟まれたガスケットに食い込みやすい形状となっている。また、把持爪（８）およびその根元部分は、握持操作部（６）や挟持作用部（７）のほかの部分より太い。 The clamping action portion (7) has a gripping claw (8) protruding in the clamping inward direction at the tip. The gripping claw (8) has a sharp tip like a blade and has a shape that easily bites into a gasket sandwiched between a flange and a bushing. Further, the gripping claw (8) and its root part are thicker than the other parts of the gripping operation part (6) and the clamping action part (7).
図３および４を参照して本発明のブッシング取外治具の操作を説明する。なお、ブッシング（３）には様々な形状があるが、一般的にはフランジ（２）との接合面が円形または長楕円形になっている。本実施例では後者の形状のブッシングを取外すものとする。 The operation of the bushing removal jig of the present invention will be described with reference to FIGS. The bushing (3) has various shapes, but generally the joint surface with the flange (2) is circular or oblong. In this embodiment, the latter type of bushing is removed.
作業者が各挟持半体の握持操作部（６）を片手ずつで握り、外方向に広げると、挟持作用部が離隔する。この状態で、治具（５）をブッシング（３）とフランジ（２）との接合部分に配置する。
ここで、ブッシング（３）は略長楕円形を有するので、治具（５）を長楕円の短い方の直径方向にブッシング（３）を跨ぐように配置する。言い換えれば、治具（５）の把持爪（８）が長楕円の長い方の直径と並行になるように配置する。
When the operator grips the gripping operation part (6) of each sandwiching half with one hand and spreads outward, the sandwiching action part is separated. In this state, the jig (5) is placed at the joint between the bushing (3) and the flange (2).
Here, since the bushing (3) has a substantially oval shape, the jig (5) is arranged so as to straddle the bushing (3) in the shorter diameter direction of the oval. In other words, it arrange | positions so that the holding | grip nail | claw (8) of a jig | tool (5) may become in parallel with the longer diameter of an ellipse.
次に、治具（５）の握持操作部（６）を内方向に操作して挟持作用部（７）を閉じ、把持爪（８）の先端部を柱上変圧器（１）のフランジ（２）とブッシング（３）との間のガスケット（４）にあてがう。把持爪（８）がガスケット（４）部分に接触していることを確認したら、作業者は握持操作部（６）をさらに内方向に操作して、把持爪（８）をガスケット（４）に食い込ませる。これを図３に示す。 Next, the holding operation part (6) of the jig (5) is operated inward to close the holding action part (7), and the tip of the holding claw (8) is connected to the flange of the pole transformer (1). Apply to gasket (4) between (2) and bushing (3). After confirming that the gripping claws (8) are in contact with the gasket (4) portion, the operator further operates the gripping operation portion (6) inward to move the gripping claws (8) to the gasket (4). To bite into. This is shown in FIG.
図２（ｂ）から明らかなように、把持爪（８）は一定の幅を有する。本実施例においては、この幅を２５ｍｍとするが、これに限定されることはない。作業者は把持爪（８）をガスケット（４）に食い込ませた状態を保持したまま、爪（８）の一端部を支点として治具（５）を左右いずれかの方向に倒す。 As is clear from FIG. 2B, the gripping claw (8) has a certain width. In the present embodiment, the width is 25 mm, but is not limited to this. The operator tilts the jig (5) in either the left or right direction with one end of the claw (8) as a fulcrum while keeping the gripping claw (8) in the gasket (4).
図４においては、治具（５）の把持爪（８）の右端部を支点とし、右方向（矢印の示す方向）に治具（５）を倒している。この動作により、ブッシング（３）をフランジ（２）から剥離させる。 In FIG. 4, the jig (5) is tilted rightward (in the direction indicated by the arrow) with the right end of the gripping claw (8) of the jig (5) as a fulcrum. By this operation, the bushing (3) is peeled off from the flange (2).
なお、本発明の取外治具（５）は、少なくとも把持爪（８）を鋼などの粘性を備えた金属から作製するのが望ましい。このとき、把持爪（８）以外の部分、すなわち先端を除いた挟持作用部（７）および握持操作部（６）は、把持爪（８）ほどの太さに作製する必要は無い。これらの各部分を全て同じ太さに作製すると、治具が重くなり操作が困難になるためである。 In addition, as for the removal jig | tool (5) of this invention, it is desirable to produce at least the holding nail | claw (8) from the metal provided with viscosity, such as steel. At this time, the portions other than the gripping claws (8), that is, the clamping action portion (7) and the gripping operation portion (6) excluding the tip need not be made as thick as the gripping claws (8). This is because if these parts are all made to the same thickness, the jig becomes heavy and the operation becomes difficult.
１ 柱上変圧器
２ フランジ
３ ブッシング
４ ガスケット
５ 取外治具
６ 握持操作部
７ 挟持作用部
８ 把持爪
９ 枢着部
1 Transformer on
Claims (2)
前記握持操作部と前記挟持作用部とは重くない操作し易い太さで細く、
前記挟持作用部は、前記ブッシングを跨ぐように両側に延在して先端に挟持内方向に突出した鉤状の鋭利な把持爪を有し、当該把持爪が挟持する両側で並行に一定の幅で前記挟持操作部や挟持作用部の細い部分より太く（幅広く）形成され、
前記握持操作部を外方向に操作すると挟持作用部が離隔し、
前記握持操作部を内方向に操作すると挟持作用部が接近するように設け、
前記把持爪を前記ブッシングの接合部分に食い込ませた状態を保持したまま当該把持爪の左右いずれかの一端部を前記フランジに当接させて支点とし他端部を前記ブッシングに当接させて作用点とした方向に倒す動作により前記ブッシングを剥離（取外し）できるように設けたことを特徴とするブッシング取外治具。 A flange of a pole transformer in which a gripping operation part is provided on one end side and a pair of clamping halves provided with a clamping action part having a thick (wide) tip part on the other end side are pivotally pivotally mounted. A bushing removal jig for removing the bushing attached to
The gripping operation part and the clamping action part are not heavy and thin with a thickness that is easy to operate ,
The clamping action part has a saddle-shaped sharp gripping claw that extends on both sides so as to straddle the bushing and protrudes in the clamping inward direction, and has a constant width in parallel on both sides of the gripping claw. Is formed thicker (wider) than the narrow part of the clamping operation part or the clamping action part,
When the gripping operation part is operated outward, the clamping action part is separated,
When the gripping operation part is operated inward, the clamping action part is provided so as to approach ,
While holding the state where the gripping claw is biting into the joint portion of the bushing, one of the left and right ends of the gripping claw is brought into contact with the flange and the other end is brought into contact with the bushing. A bushing removal jig provided so that the bushing can be peeled (removed) by a tilting operation in a pointed direction .
前記ブッシング取外治具は、少なくとも前記挟持作用部が鋼等の粘性（靭性）を有する金属よりなることを特徴とするブッシング取外治具。 In the bushing removal jig | tool of Claim 1,
The bushing removal jig is characterized in that at least the clamping action part is made of a metal having viscosity (toughness) such as steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005187448A JP4461065B2 (en) | 2005-06-27 | 2005-06-27 | Bushing removal jig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005187448A JP4461065B2 (en) | 2005-06-27 | 2005-06-27 | Bushing removal jig |
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| Publication Number | Publication Date |
|---|---|
| JP2007006685A JP2007006685A (en) | 2007-01-11 |
| JP4461065B2 true JP4461065B2 (en) | 2010-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| JP2005187448A Expired - Fee Related JP4461065B2 (en) | 2005-06-27 | 2005-06-27 | Bushing removal jig |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103606855A (en) * | 2013-11-29 | 2014-02-26 | 国家电网公司 | Disassembly and assembly device for R-type locking pins of porcelain insulators |
| CN110912019A (en) * | 2019-11-19 | 2020-03-24 | 国网浙江杭州市富阳区供电有限公司 | Convenient-to-operate live-wire work lead hooking device |
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