JP2023123021A - Wedge extraction device for section insulator - Google Patents

Wedge extraction device for section insulator Download PDF

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JP2023123021A
JP2023123021A JP2022026837A JP2022026837A JP2023123021A JP 2023123021 A JP2023123021 A JP 2023123021A JP 2022026837 A JP2022026837 A JP 2022026837A JP 2022026837 A JP2022026837 A JP 2022026837A JP 2023123021 A JP2023123021 A JP 2023123021A
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wedge
pair
tightening
members
section insulator
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貴之 菅原
Takayuki Sugawara
修平 佐藤
Shuhei Sato
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Sanwa Tekki Corp
Nippon Rietec Co Ltd
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Sanwa Tekki Corp
Nippon Rietec Co Ltd
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Abstract

To provide a wedge extraction device which enables any operator to easily carry out work irrespective of skills of an operator, and with no possibility of damaging a metal fitting.SOLUTION: A wedge extraction device 1 comprises: an abutment member 2 annularly disposed to abut at a bottom surface against an upper end surface 12a of a connection part 12 of a section insulator 11; a pair of fastening members 3 superposed on the abutment member 2 to face each other so as to grip a projected part 14c of a wedge 14 from the connection part 12; a fastening bolt 4 that fastens the fastening members 3 to each other in a direction orthogonal to the axis of the wedge 14 so as to grip the projected part 14c of the wedge 14; and push bolts 5 that penetrate the fastening members 3 through the wedge 14 in the axis direction, abut at the tips against a top surface of the abutment member 2, and separate the fastening members 3 gripping the wedge 14 from the abutment member 2 through screwing-in.SELECTED DRAWING: Figure 1

Description

異種電源に接続されるトロリ線は、電源区分箇所においてセクションインシュレータを介して電気的に絶縁して接続される。本発明は、このセクションインシュレータとトロリ線との接続部に、抜け止めのために用いられるコーンチャック型のクサビをセクションインシュレータから抜き取るための装置に関する。 Trolley wires connected to different power supplies are electrically insulated and connected through section insulators at power supply division points. The present invention relates to a device for extracting from the section insulator a cone-chuck type wedge that is used to prevent the section insulator from coming off at the connection between the section insulator and the trolley wire.

従来、セクションインシュレータからトロリ線を抜き取る装置として、特許文献1に開示されたものが知られている。この装置は、一端下面にセクションインシュレータの上面に当接される当接部を有する角棒状の下部材と、一端にセクションインシュレータから突出したトロリ線の端部を把持する固定部を有する角棒状の上部材と、下部材に対して上部材を傾動自在に連結する連結部材と、下部材の他端と上記上部材の他端とを互いに接近させるボルトのような接近手段とよりなり、ボルトを締めて下部材と上部材の他端部間を接近させると、トロリ線の端部を把持する上部材の一端が下部材の一端に対して上昇し、トロリ線をセクションインシュレータから引き抜くものである。
その他、ペンチ構造の工具でクサビの突出部を把持して引き抜く方法や、マイナスドライバのような工具とハンマを用いて打撃を加えてクサビを抜き取る方法などが用いられている。
Conventionally, the device disclosed in Patent Document 1 is known as a device for extracting a trolley wire from a section insulator. This device is composed of a square bar-shaped lower member having a contact portion on one end lower surface that abuts against the upper surface of the section insulator, and a square bar-shaped lower member having a fixed portion on one end for gripping the end of the trolley wire protruding from the section insulator. It comprises an upper member, a connecting member for tiltably connecting the upper member to the lower member, and an approaching means such as a bolt for bringing the other end of the lower member and the other end of the upper member closer to each other. When the lower member and the other end of the upper member are brought closer to each other by tightening, one end of the upper member that grips the end of the contact wire rises relative to one end of the lower member to pull out the contact wire from the section insulator. .
Other methods include a method of grasping the protruding portion of the wedge with a tool having a pliers structure and pulling it out, and a method of applying an impact using a tool such as a slotted screwdriver and a hammer to extract the wedge.

特開2012-158224号公報JP 2012-158224 A

特許文献1に記載のものは、現場によりトロリ線の突出代がまちまちであり、トロリ線を把持するための十分な掴み代がない現場では使用することができない。
その他のいずれの方法も、作業者の熟練度や力量に負うところが大きい上、作業により金具に損傷を与える可能性がある。
従って、本発明は、作業者の力量に左右されることなく、誰でも容易に同じ作業ができ、しかも金具を損傷させるおそれのないクサビの抜き取り装置を提供することを課題とする。
The device described in Patent Literature 1 cannot be used in a site where the protrusion margin of the trolley wire varies depending on the site and there is no sufficient gripping margin for gripping the trolley wire.
Any of the other methods greatly depends on the skill and ability of the operator, and there is a possibility that the work may damage the fitting.
SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a wedge extraction device that allows anyone to easily perform the same work without being affected by the skill level of the operator and that does not damage the metal fittings.

以下の説明において添付図面の符号を参照するが、本発明はこれに限定されるものではない。
上記課題を解決するための、本発明のクサビ抜き取り装置1は、セクションインシュレータ11におけるコーンチャック型クサビ14の端部が突出する接続部12の上端面12aに下面が当接するように環状に配置される当接部材2と、接続部12からのクサビ14の突出部14cの外周を把持するように相対向して当接部材2の上に重ねて配置される一対の締め付け部材3と、クサビ14の突出部14cを把持するように一対の締め付け部材3間をクサビ14の軸線直交方向に締め付ける締め付けボルト4と、一対の締め付け部材3をそれぞれクサビ14の軸線方向に貫通し、先端が当接部材2の上面に当接し、締め込みによりクサビ14を把持した締め付け部材3を当接部材2から引き離す押しボルト5とを具備する。
In the following description reference is made to the figures of the accompanying drawings, but the invention is not limited thereto.
In order to solve the above problems, the wedge extraction device 1 of the present invention is arranged annularly so that the lower surface abuts the upper end surface 12a of the connection portion 12 from which the end portion of the cone chuck type wedge 14 in the section insulator 11 protrudes. a pair of clamping members 3 arranged to face each other so as to grip the outer periphery of the projecting portion 14c of the wedge 14 from the connection portion 12 and overlapped on the contact member 2, and the wedge 14 The tightening bolt 4 for tightening between the pair of tightening members 3 in the direction orthogonal to the axis of the wedge 14 so as to grip the projecting portion 14c of the wedge 14, and the pair of tightening members 3 penetrate in the axial direction of the wedge 14, and the tip is a contact member 2 and pulls away from the contact member 2 the tightening member 3 that grips the wedge 14 by tightening.

本発明によれば、一対の締め付け部材でクサビの突出部を把持するから、セクションインシュレータからのトロリ線の突出寸法の長短にかかわらず、セクションインシュレータに装着することができ、また、熟練や大きな力を要しない押しボルトの締め付け作業のみでクサビの抜き取りができる。打撃や衝撃を加えることなく作業ができるので、部材の損傷を生じることもない。 According to the present invention, since the protruding portion of the wedge is held by the pair of tightening members, the contact wire can be attached to the section insulator regardless of the length of the protruding dimension of the contact wire from the section insulator. The wedge can be extracted only by tightening the push bolt, which does not require Since the work can be performed without applying blows or shocks, there is no chance of damage to the members.

本発明のクサビ抜き取り装置をセクションインシュレータに装着した状態の正面図である。1 is a front view of the wedge extracting device of the present invention mounted on a section insulator; FIG. 図1の状態の平面図である。FIG. 2 is a plan view of the state of FIG. 1; 図1のIII-III断面図である。FIG. 2 is a sectional view taken along line III-III in FIG. 1; 図2のIV-IV断面図である。FIG. 3 is a sectional view along IV-IV in FIG. 2; クサビを抜き取った状態の正面図である。It is a front view of the state which extracted the wedge. クサビを抜き取った状態の図3と同位置の断面図である。FIG. 4 is a cross-sectional view of the same position as in FIG. 3 with the wedge removed; クサビを抜き取った状態の図4と同位置の断面図である。FIG. 5 is a cross-sectional view of the same position as in FIG. 4 with the wedge removed. クサビ抜き取り装置の分解斜視図である。It is an exploded perspective view of a wedge extraction device. クサビを抜き取り装置の正面図である。It is a front view of a wedge extraction device. クサビ抜き取り装置の平面図である。It is a top view of a wedge extracting device. クサビの抜き取り前のセクションインシュレータにおけるトロリ線接続部の断面図である。FIG. 4 is a cross-sectional view of a trolley wire connecting portion in the section insulator before the wedge is pulled out;

本発明のクサビ抜き取り装置を用いてクサビの抜き取りを行おうとするセクションインシュレータ11の一端部を図11に示す。セクションインシュレータ11は、トロリ線13の端部を引き留めるための概略筒状の接続部12を具備する。この接続部12に、トロリ線13の端部が挿通される。トロリ線13は、接続部12内において、コーンチャック型のクサビ14の一対の把持片14aで把持され、接続部12から抜け止めされる。 FIG. 11 shows one end of the section insulator 11 from which the wedge is to be extracted by using the wedge extractor of the present invention. The section insulator 11 has a substantially cylindrical connecting portion 12 for holding the end of the trolley wire 13 . An end portion of the contact wire 13 is inserted through the connection portion 12 . The trolley wire 13 is gripped by a pair of gripping pieces 14 a of a cone-chuck type wedge 14 in the connecting portion 12 and prevented from coming off from the connecting portion 12 .

クサビ14は、一対の把持片14aを形成するための対向一対の割溝14bを具備する。一方の割溝14bは全長にわたるが、他方の割溝14bは基端部14c側において連続部14dを残して終結する。クサビ14の円筒状の基端部14cと、トロリ線13の上端部は接続部12の上端面12aから突出している。 The wedge 14 has a pair of opposing split grooves 14b for forming a pair of gripping pieces 14a. One split groove 14b extends over the entire length, but the other split groove 14b terminates at the base end portion 14c side, leaving a continuous portion 14d. The cylindrical base end portion 14 c of the wedge 14 and the upper end portion of the trolley wire 13 protrude from the upper end surface 12 a of the connecting portion 12 .

クサビ14は、セクションインシュレータ11の設置時のトロリ線13の張力を受けて接続部12内に引き込まれ、一対の把持片14aでトロリ線13を強く把持しているため、接続部12から容易に抜き取ることができない。 The wedge 14 is pulled into the connection portion 12 by receiving the tension of the contact wire 13 when the section insulator 11 is installed, and since the pair of gripping pieces 14a strongly grip the contact wire 13, the wedge 14 can be easily removed from the connection portion 12. cannot be removed.

以上のようなセクションインシュレータ11からクサビ14を抜き取るための本発明のクサビ抜き取り装置1は、図8によく示すように、一対の当接部材2と、一対の締め付け部材3と、一対の締め付けボルト4と、一対の押しボルト5とを具備する。 As shown in FIG. 8, the wedge extraction device 1 of the present invention for extracting the wedge 14 from the section insulator 11 as described above comprises a pair of abutting members 2, a pair of tightening members 3, and a pair of tightening bolts. 4 and a pair of push bolts 5.

一対の当接部材2は、半割ドーナツ状の金属板からなる当接板21と、この当接板21から垂直に起立する円柱状の一対のガイドピン22とを具備する。 The pair of contact members 2 includes a contact plate 21 made of a metal plate in the shape of a half doughnut, and a pair of cylindrical guide pins 22 vertically erected from the contact plate 21 .

図1に示すように、当接部材2は、使用時に、セクションインシュレータ11の接続部12の上端面12aに下面が当接するように環状に配置され、ガイドピン22の軸心はクサビ14の軸心と平行に配置される。 As shown in FIG. 1, the contact member 2 is annularly arranged so that its lower surface contacts the upper end surface 12a of the connecting portion 12 of the section insulator 11 when in use, and the axis of the guide pin 22 coincides with the axis of the wedge 14. placed parallel to the heart.

図1,8によく示すように、一対の締め付け部材3は、半割ドーナツ状の金属ブロックからなり、使用時には、接続部12から突出したクサビ14の基端部14cの外周を把持するように相対向して、当接部材2の上に重ねて配置される。 As well shown in FIGS. 1 and 8, the pair of tightening members 3 are made of metal blocks in the shape of half donuts, and when used, grip the outer periphery of the base end portion 14c of the wedge 14 projecting from the connecting portion 12. They are arranged on top of the contact member 2 so as to face each other.

図8ないし10によく示すように、締め付け部材3は、把持凹部31、ガイド孔32、押しボルト螺合孔33、締め付けボルト挿通孔34及び螺合孔35を具備する。 As best shown in FIGS. 8 to 10, the clamping member 3 has a gripping recess 31, a guide hole 32, a push bolt threaded hole 33, a clamping bolt insertion hole 34 and a threaded hole 35. As shown in FIG.

把持凹部31は、クサビ14の基端部14cの外周に沿う横断面概略半円弧状で、その内周には、クサビ14の割溝14bに係合する係合凸部36が形成される。締め付け部材3を当接部材2の上に重ねて配置するときに、図3に示すように、係合凸部36が割溝14bに対向するように位置決めされる。 The grasping recess 31 has a substantially semicircular cross section along the outer periphery of the base end portion 14c of the wedge 14, and an engagement protrusion 36 that engages with the split groove 14b of the wedge 14 is formed on the inner periphery thereof. When the tightening member 3 is placed on the contact member 2, as shown in FIG. 3, the engagement protrusion 36 is positioned so as to face the split groove 14b.

ガイド孔32は、締め付け部材3を当接部材2に重ねて装着する際に、ガイドピン22を挿通させる貫通孔であり、当接部材2に対する締め付け部材3の垂直上下動を案内する。 The guide hole 32 is a through hole through which the guide pin 22 is inserted when the tightening member 3 is mounted on the contact member 2 , and guides the vertical vertical movement of the tightening member 3 with respect to the contact member 2 .

押しボルト螺合孔33は、ガイド孔32と平行に複数設けられるねじ孔であり、上下に貫通しており、これに締め付け部材3を当接部材2から押し上げるための押しボルト5が螺合される。押しボルト5は、クサビ14の装着方向の相違等に応じ、適宜螺合孔33を選択して螺合される。 The push bolt screwing holes 33 are screw holes provided in parallel with the guide hole 32, and penetrate vertically. be. The push bolt 5 is screwed into the screwing hole 33 appropriately selected according to the difference in the mounting direction of the wedge 14 and the like.

締め付けボルト挿通孔34と締め付けボルト螺合孔35は、それぞれ把持凹部31を挟んだ両側の相対向位置に、ガイド孔32と直交する方向に設けられ、一対の締め付け部材3間にクサビ14を把持するための締め付けボルト4が挿通、螺合される。 The tightening bolt insertion hole 34 and the tightening bolt screwing hole 35 are provided in a direction perpendicular to the guide hole 32 at opposing positions on both sides of the gripping recess 31 , and grip the wedge 14 between the pair of fastening members 3 . A tightening bolt 4 for tightening is inserted and screwed.

セクションインシュレータ11の接続部12からクサビ14を抜き取る作業について説明する。図1ないし4に示すように、あらかじめ当接部材2と、押しボルト5を装着した締め付け部材3とを組み合わせてなる一対のものを、接続部12から突出しているクサビ14の基端部14cを挟むように、上端面12a上に相対向させて配置する。この際、締め付け部材3の係合凸部36をクサビ14の割溝14bに突き合わせる。接続部12に対する割溝14bの軸周りの位置は現場ごとに相違する。このため、押しボルト5の螺合位置は、その都度、ねじ込み操作しやすい位置に相対向する押しボルト螺合孔33を適宜選択して決定する。 An operation of extracting the wedge 14 from the connection portion 12 of the section insulator 11 will be described. As shown in FIGS. 1 to 4, a pair of abutting member 2 and a tightening member 3 to which a push bolt 5 is attached is attached to the base end 14c of the wedge 14 protruding from the connecting portion 12. They are arranged so as to face each other on the upper end surface 12a so as to be sandwiched between them. At this time, the engagement convex portion 36 of the tightening member 3 is brought into contact with the split groove 14b of the wedge 14 . The position of the split groove 14b around the axis with respect to the connecting portion 12 differs from site to site. Therefore, the screwing position of the push bolt 5 is determined each time by appropriately selecting the opposite push bolt screwing hole 33 at a position where the screwing operation is easy.

次いで、締め付けボルト挿通孔34を通して締め付けボルト螺合孔35に締め付けボルト4を螺合して一対の締め付け部材3間を締め付け、両者間にクサビ14の突出部である基端部14cを把持する。このとき、係合凸部36が狭まっているクサビ14の割溝14bに圧入され割溝14bを開くように作用する。 Next, the tightening bolt 4 is screwed into the tightening bolt screwing hole 35 through the tightening bolt insertion hole 34 to tighten between the pair of tightening members 3, and the base end portion 14c, which is the projecting portion of the wedge 14, is gripped between them. At this time, the engaging projection 36 is press-fitted into the narrowed split groove 14b of the wedge 14 and acts to open the split groove 14b.

次いで、押しボルト5を均等に下方へ送り、その先端を締め付け部材3の下面から突出させることで、図5ないし7に示すように、締め付け部材3をクサビ14と一体に当接部材2上に押し上げる。このとき、係合凸部36が一方の割溝14bの末端に当接して締め付け部材3とクサビ14と滑りを阻止する。これでクサビ14がセクションインシュレータ11の接続部12から抜き取られる。 Next, the push bolts 5 are evenly fed downward, and their tips protrude from the lower surface of the clamping member 3, so that the clamping member 3 is integrated with the wedge 14 onto the contact member 2 as shown in FIGS. push up. At this time, the engagement projection 36 abuts on the end of one of the split grooves 14b to prevent the fastening member 3 and the wedge 14 from slipping. The wedge 14 is thus extracted from the connecting portion 12 of the section insulator 11 .

なお、締め付け部材3によるクサビの把持力が十分に大きく相互間に滑りが生じなければ、係合凸部36を省略することができる。 In addition, if the gripping force of the wedge by the tightening member 3 is sufficiently large and no slippage occurs between them, the engaging projections 36 can be omitted.

以上の実施形態において、当接部材2を半割ドーナツ状の一対で構成したが、これを円環状の一体のものとして構成することができ、またガイドピンを省略することもできる。 In the above embodiment, the abutting member 2 is configured as a pair of half-doughnut-shaped members, but it can be configured as an integral annular member, and the guide pin can be omitted.

以上の抜き取り作業において、一対の締め付け部材3でクサビ14の突出部14cを把持するから、セクションインシュレータ11からのトロリ線13の突出寸法の長短にかかわらず、クサビ抜き取り装置1をセクションインシュレータ11の接続部12に容易に装着することができ、また、作業に熟練や大きな力を要しないし、打撃や衝撃による部材の損傷を生じることもない。 In the extraction work described above, since the projection 14c of the wedge 14 is held by the pair of tightening members 3, regardless of the length of the projection of the trolley wire 13 from the section insulator 11, the wedge extraction device 1 can be connected to the section insulator 11. It can be easily attached to the part 12, does not require skill or a large amount of force for work, and does not cause damage to members due to impact or impact.

1 クサビ抜き取り装置
2 当接部材
21 当接板
22 ガイドピン
3 締め付け部材
31 把持凹部
32 ガイド孔
33 押しボルト螺合孔
34 締め付けボルト挿通孔
35 締め付けボルト螺合孔
36 係合凸部
4 締め付けボルト
5 押しボルト
11 セクションインシュレータ
12 接続部
12a 上端面
13 トロリ線
14 クサビ
14a 把持片
14b 割溝
14c 基端部
14d 連続部
1 Wedge extraction device 2 Abutment member 21 Abutment plate 22 Guide pin 3 Tightening member 31 Grasping recess 32 Guide hole 33 Push bolt screw hole 34 Tightening bolt insertion hole 35 Tightening bolt threaded hole 36 Engagement protrusion 4 Tightening bolt 5 Push bolt 11 Section insulator 12 Connecting portion 12a Upper end surface 13 Trolley wire 14 Wedge 14a Grasping piece 14b Split groove 14c Base end portion 14d Continuous portion

Claims (4)

概略筒状の接続部に挿通されたトロリ線の端部を一対の把持片を有するコーンチャック型のクサビで把持して抜け止めすることにより当該トロリ線と接続されているセクションインシュレータから当該クサビを抜き取る装置であって、
前記クサビの端部が突出する前記接続部の上端面に下面が当接するように環状に配置される当接部材と、
前記クサビの前記接続部からの突出部の外周を把持するように相対向して前記当接部材の上面に重ねて配置される一対の締め付け部材と、
前記クサビの前記突出部を把持するように前記一対の締め付け部材間を前記クサビの軸線直交方向に締め付ける締め付けボルトと、
前記一対の締め付け部材をそれぞれ前記クサビの軸線方向に貫通し、先端が前記当接部材の外側面に当接し、締め込みにより前記クサビを把持した前記締め付け部材を前記当接部材から引き離す押しボルトとを具備することを特徴とするセクションインシュレータのクサビ抜き取り装置。
A cone-chuck type wedge having a pair of gripping pieces grips the end of the trolley wire inserted through the generally cylindrical connecting portion to prevent the trolley wire from slipping out, thereby removing the wedge from the section insulator connected to the trolley wire. A device for extracting,
a contact member annularly arranged so that a lower surface contacts an upper end surface of the connecting portion from which the end portion of the wedge protrudes;
a pair of clamping members arranged so as to overlap an upper surface of the contact member so as to grip the outer periphery of the projecting portion of the wedge from the connecting portion;
a tightening bolt for tightening between the pair of tightening members in a direction perpendicular to the axis of the wedge so as to grip the projecting portion of the wedge;
a push bolt that passes through each of the pair of tightening members in the axial direction of the wedge, has a tip that abuts against the outer surface of the contact member, and separates the tightening member that grips the wedge by tightening from the contact member; A section insulator wedge extraction device comprising:
前記当接部材は、相対向して環状に配置される一対の部材で構成されることを特徴とする請求項1に記載のセクションインシュレータのクサビ抜き取り装置。 2. The section insulator wedge extraction device according to claim 1, wherein said abutting member is composed of a pair of annularly arranged members facing each other. 前記一対の締め付け部材は、前記クサビの外周に沿う把持凹部と、前記クサビの半割溝に係合するように前記把持凹部の内周に突設された係合凸部とを具備することを特徴とする請求項1に記載のセクションインシュレータのクサビ抜き取り装置。 The pair of tightening members has a gripping recess along the outer periphery of the wedge and an engaging projection projecting from the inner periphery of the gripping recess so as to engage with the half-split groove of the wedge. 2. The device for extracting a wedge from a section insulator according to claim 1. 前記当接部材は、相対向して環状に配置される一対の構成部材からなり、それぞれ垂直に起立するガイドピンを具備し、
前記一対の締め付け部材は、それぞれ前記当接部材の各構成部材に対向し、前記ガイドピンを挿通させるガイド孔を具備することを特徴とする請求項1に記載のセクションインシュレータのクサビ抜き取り装置。
The abutting member comprises a pair of structural members arranged in an annular manner facing each other, each having a vertically standing guide pin,
2. The section insulator wedge extracting device according to claim 1, wherein the pair of tightening members are provided with guide holes that face the constituent members of the abutment members, respectively, and through which the guide pins are inserted.
JP2022026837A 2022-02-24 2022-02-24 Wedge extraction device for section insulator Pending JP2023123021A (en)

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JP2023123021A true JP2023123021A (en) 2023-09-05

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