JPH11205937A - Insulation cylinder enlarging jig - Google Patents
Insulation cylinder enlarging jigInfo
- Publication number
- JPH11205937A JPH11205937A JP9369280A JP36928097A JPH11205937A JP H11205937 A JPH11205937 A JP H11205937A JP 9369280 A JP9369280 A JP 9369280A JP 36928097 A JP36928097 A JP 36928097A JP H11205937 A JPH11205937 A JP H11205937A
- Authority
- JP
- Japan
- Prior art keywords
- piston rod
- cylinder
- insulating cylinder
- jig
- insulation cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Processing Of Terminals (AREA)
- Cable Accessories (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はＣＶケーブル（架橋
ポリエチレン絶縁電力ケーブル）等のプラスチック電力
ケーブルのプレハブ型接続部を形成する際に絶縁筒の径
を拡大する治具に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a jig for enlarging the diameter of an insulating cylinder when forming a prefabricated connection portion of a plastic power cable such as a CV cable (crosslinked polyethylene insulated power cable).
【０００２】[0002]
【従来の技術】従来の絶縁筒拡大治具として特開平8-22
3760号記載のものがある。これは、図６に示すように、
ベース１上に垂直に設けた複動シリンダ２を油圧ポンプ
３で作動し、シリンダ２のピストンロッド４にはめ込ま
れた絶縁筒５の径を拡大するものである。シリンダ２の
外周には予め拡径パイプ６をはめ込んでおくと共に、そ
の上端部にテーパ金具22を装着しておく。一方、ピスト
ンロッド４の上端には絶縁筒５の受け金具７を取り付け
てナット23で位置決めする。ここで、シリンダ２を作動
してピストンロッド４を下方に押圧すると、絶縁筒５は
下方に押し下げられ、テーパ金具22で押し拡げられて拡
径パイプ６の外周にはまり込む。その後、拡径された絶
縁筒５を拡径パイプ６ごとシリンダ２から外し、これを
ケーブル接続部（図示せず）の外周にはめ込む。2. Description of the Related Art As a conventional insulating cylinder enlarging jig, see Japanese Patent Application Laid-Open
There is one described in 3760. This is shown in FIG.
A double-acting cylinder 2 provided vertically on a base 1 is actuated by a hydraulic pump 3 to increase the diameter of an insulating cylinder 5 fitted in a piston rod 4 of the cylinder 2. The enlarged diameter pipe 6 is fitted in the outer periphery of the cylinder 2 in advance, and a taper fitting 22 is attached to the upper end thereof. On the other hand, the receiving bracket 7 of the insulating cylinder 5 is attached to the upper end of the piston rod 4 and positioned by the nut 23. Here, when the cylinder 2 is operated and the piston rod 4 is pressed downward, the insulating cylinder 5 is pushed downward, is pushed and expanded by the taper fitting 22, and fits into the outer periphery of the enlarged pipe 6. Thereafter, the insulating cylinder 5 whose diameter has been expanded is removed from the cylinder 2 together with the expanded pipe 6, and this is fitted on the outer periphery of a cable connection portion (not shown).
【０００３】[0003]
【発明が解決しようとする課題】ところで、上記のよう
な絶縁筒拡大治具の受け金具は、一般にピストンロッド
の貫通孔が形成された板状のものを用いている。そのた
め、ピストンロッドと絶縁筒の上端部とを同芯状に保持
する機構はなく、シリンダで押圧されたときに絶縁筒が
傾きやすい。傾いたままで絶縁筒を押圧すると、絶縁筒
に不均一な力が作用して品質上の問題が生じやすい上、
シリンダの押圧力にロスが生じる。また、絶縁筒の上端
は開口しているため内部に異物が侵入するおそれがあ
る。絶縁筒の内部に異物が侵入したまま拡径パイプの外
周にはめ込まれると、絶縁筒の内周面に疵が付き、その
絶縁筒で形成されたケーブル接続部の電気的特性が悪化
する。By the way, the receiving member of the above-mentioned insulating tube enlarging jig is generally a plate-like member having a through hole for a piston rod. Therefore, there is no mechanism for holding the piston rod and the upper end of the insulating cylinder concentrically, and the insulating cylinder tends to tilt when pressed by the cylinder. If you press the insulating cylinder while it is tilted, uneven force will act on the insulating cylinder and quality problems will easily occur.
Loss occurs in the pressing force of the cylinder. Also, since the upper end of the insulating cylinder is open, foreign matter may enter the inside. If the foreign matter enters the inside of the insulating cylinder and is fitted on the outer periphery of the expanded pipe, the inner peripheral surface of the insulating cylinder is flawed, and the electrical characteristics of the cable connection portion formed by the insulating cylinder deteriorate.
【０００４】従って、本発明の主目的は、ピストンロッ
ドと絶縁筒とを同芯状に保持し、絶縁筒を傾くことなく
拡大できる絶縁筒拡大治具を提供することにある。Accordingly, it is a primary object of the present invention to provide an insulating cylinder enlarging jig which holds a piston rod and an insulating cylinder concentrically and can enlarge the insulating cylinder without tilting.
【０００５】[0005]
【課題を解決するための手段】本発明は上記の課題を解
消するもので、その第一の特徴は、シリンダにおけるピ
ストンロッドの先端に絶縁筒の受け金具を装着し、ピス
トンロッドを軸方向に作動して、ピストンロッドの外周
に配置された絶縁筒を受け金具で押圧し、シリンダの外
周に配置された拡径パイプの外周に絶縁筒をはめ込む絶
縁筒拡大治具において、前記絶縁筒の受け金具側の端部
に、絶縁筒とピストンロッドとの間に介在されて両者を
同芯状に保持する芯出し治具を具えることにある。Means for Solving the Problems The present invention solves the above-mentioned problems, and the first feature of the present invention is to attach a receiving member of an insulating cylinder to the tip of a piston rod in a cylinder and to move the piston rod in the axial direction. Actuating, the insulating cylinder arranged on the outer periphery of the piston rod is pressed by a metal fitting, and the insulating cylinder enlarging jig in which the insulating cylinder is fitted on the outer periphery of the expanded pipe arranged on the outer periphery of the cylinder is provided. Another object of the present invention is to provide a centering jig interposed between the insulating cylinder and the piston rod and holding the two concentrically at the end on the metal fitting side.
【０００６】この芯出し治具はプラスチックやゴムなど
の可撓性を有する材料で構成することが好ましい。この
ような材料で構成すると、芯出し治具が絶縁筒内周面と
ピストンロッドとの間に密接にはめ込みやすく、ピスト
ンロッドと絶縁筒との同芯性が確保されると共に、絶縁
筒内への異物の侵入も防止しやすい。特に、芯出し治具
の内周面にＯリングを設けると、ピストンロッドと芯出
し治具との間をシールでき、絶縁筒内への異物の侵入を
一層確実に防止できる。The centering jig is preferably made of a flexible material such as plastic or rubber. With such a material, the centering jig can be easily fitted tightly between the inner peripheral surface of the insulating cylinder and the piston rod, and concentricity between the piston rod and the insulating cylinder can be ensured. Foreign matter can easily be prevented from entering. In particular, if an O-ring is provided on the inner peripheral surface of the centering jig, the space between the piston rod and the centering jig can be sealed, and foreign matter can be more reliably prevented from entering the insulating cylinder.
【０００７】また、本発明の第二の特徴は、シリンダに
おけるピストンロッドの先端に絶縁筒の受け金具を装着
し、ピストンロッドを軸方向に作動して、ピストンロッ
ドの外周に配置された絶縁筒を受け金具で押圧し、シリ
ンダの外周に配置された拡径パイプの外周に絶縁筒をは
め込む絶縁筒拡大治具において、前記受け金具は、絶縁
筒を周囲から中心方向に押圧する複数の絶縁筒押さえを
具えることにある。[0007] A second feature of the present invention is that a receiving member of an insulating cylinder is attached to a tip of a piston rod in a cylinder, and the piston rod is operated in an axial direction to thereby provide an insulating cylinder disposed on the outer periphery of the piston rod. In an insulating cylinder enlarging jig, which presses an insulating cylinder on the outer periphery of a large-diameter pipe arranged on the outer periphery of a cylinder by pressing the insulating cylinder on the outer periphery of the cylinder, the receiving bracket includes a plurality of insulating cylinders for pressing the insulating cylinder from the periphery toward the center. It is to provide a hold.
【０００８】[0008]
【発明の実施の形態】以下、本発明の実施の形態を説明
する。図１は本発明絶縁筒拡大治具の絶縁筒拡径前の状
態を示す概略図である。Embodiments of the present invention will be described below. FIG. 1 is a schematic view showing a state before the diameter of the insulating cylinder is enlarged by the jig for expanding the insulating cylinder of the present invention.
【０００９】図１に示すように、この治具はベース１上
に垂直に設置された複動油圧シリンダ２と、このシリン
ダ２に作動油を供給する油圧ポンプ３を具え、このシリ
ンダ２のピストンロッド４を下方に作動し、絶縁筒５を
拡径パイプ６の外周に押し込むものである。As shown in FIG. 1, the jig includes a double-acting hydraulic cylinder 2 installed vertically on a base 1 and a hydraulic pump 3 for supplying hydraulic oil to the cylinder 2. By operating the rod 4 downward, the insulating cylinder 5 is pushed into the outer periphery of the expanded pipe 6.
【００１０】シリンダ２は外周に拡径パイプ６が配置さ
れると共に、軸方向に動作するピストンロッド４を具え
ている。ピストンロッド４は、上端部がシリンダ２の外
部に露出し、下端部がシリンダ２に内蔵されている。こ
の上端部には絶縁筒５の受け金具７が固定され、下端部
には作動油が作用する受圧部（図示せず）が形成されて
いる。The cylinder 2 is provided with a diameter-enlarged pipe 6 on its outer periphery and has a piston rod 4 which operates in the axial direction. The upper end of the piston rod 4 is exposed to the outside of the cylinder 2, and the lower end is built in the cylinder 2. A receiving member 7 of the insulating cylinder 5 is fixed to the upper end portion, and a pressure receiving portion (not shown) on which hydraulic oil acts is formed at a lower end portion.
【００１１】ここで、絶縁筒５の上端開口部に芯出し治
具を装着する。その装着状態を図２に示す。芯出し治具
８は一端にフランジを具えた円筒キャップ状のもので、
中心にピストンロッド４の貫通孔９を具え、フランジ以
外の部分の外径は絶縁筒５の内径に対応している。芯出
し治具８の装着は、フランジを上にしてピストンロッド
４を貫通孔９に挿通し、フランジ以外の部分を絶縁筒５
の内周にはめ込むことで行う。芯出し治具８を装着する
と、フランジの下面が絶縁筒５の上端面に当接して絶縁
筒５の開口部をふさぐ。そのため、絶縁筒５はピストン
ロッド４と同芯状に保持されると共に、絶縁筒５の内部
に異物が侵入することを防止できる。さらに、本例では
芯出し治具８の内周にＯリング10を設けた。Ｏリング10
を設けることで、芯出し治具８とピストンロッド４との
間をシールして一層確実に絶縁筒内への異物の侵入を排
除できる。Here, a centering jig is attached to the upper end opening of the insulating cylinder 5. FIG. 2 shows the mounted state. The centering jig 8 is a cylindrical cap having a flange at one end.
A through hole 9 for the piston rod 4 is provided at the center, and the outside diameter of the portion other than the flange corresponds to the inside diameter of the insulating cylinder 5. The centering jig 8 is mounted by inserting the piston rod 4 into the through hole 9 with the flange facing upward,
This is done by fitting it into the inner circumference of When the centering jig 8 is mounted, the lower surface of the flange abuts on the upper end surface of the insulating tube 5 to close the opening of the insulating tube 5. Therefore, the insulating cylinder 5 is held concentrically with the piston rod 4 and can prevent foreign matter from entering the inside of the insulating cylinder 5. Further, in this embodiment, an O-ring 10 is provided on the inner periphery of the centering jig 8. O-ring 10
Is provided, the space between the centering jig 8 and the piston rod 4 is sealed, so that the intrusion of foreign matter into the insulating cylinder can be more reliably eliminated.
【００１２】一方、受け金具７は上部円盤11と下部環状
体12とを複数の連結軸13で平行に保持した構造である
（図１参照）。上部円盤11の平面図を図３に、下部環状
体12の詳細構成を図４に示す。上部円盤11は外周から中
心に至る切欠14を有する板状体で、下部環状体９も外周
面から内周面に至る切欠15を具えている。そして、上部
円盤11と下部環状体12は、軸方向から見たときに両切欠
14,15 が重なるように連結されている。On the other hand, the receiving fitting 7 has a structure in which an upper disk 11 and a lower annular body 12 are held in parallel by a plurality of connecting shafts 13 (see FIG. 1). A plan view of the upper disk 11 is shown in FIG. 3, and a detailed configuration of the lower annular body 12 is shown in FIG. The upper disk 11 is a plate-like body having a notch 14 extending from the outer periphery to the center. The lower annular body 9 also has a notch 15 extending from the outer peripheral surface to the inner peripheral surface. The upper disk 11 and the lower annular body 12 are both notched when viewed from the axial direction.
14,15 are connected so that they overlap.
【００１３】また、図４に示すように、下部環状体12に
は絶縁筒５と同芯状に装着するための絶縁筒押さえ16が
複数（ここでは６本）設けられている。各絶縁筒押さえ
16はテーパ状の先端部を具え、下部環状体12の外周面か
ら内周面に貫通されて、中心方向にばね17で押圧されて
いる。各絶縁筒押さえ16の中心部にはばね17を取り付け
るための溝18が形成され、ばね17の一端はこの溝18の端
部に当接し、他端は下部環状体12の表面から前記溝18に
達するピン19に当接している。このばね17の反発力によ
り、各絶縁筒押さえ16は互いに先端部が突き合わされた
状態に保持される。As shown in FIG. 4, the lower annular body 12 is provided with a plurality (here, six) of insulating cylinder holders 16 for mounting concentrically with the insulating cylinder 5. Each insulating cylinder holder
Reference numeral 16 has a tapered tip portion, which penetrates from the outer peripheral surface to the inner peripheral surface of the lower annular body 12, and is pressed by a spring 17 in the center direction. A groove 18 for mounting a spring 17 is formed at the center of each insulating cylinder retainer 16, one end of the spring 17 abuts on the end of the groove 18, and the other end extends from the surface of the lower annular body 12 to the groove 18. Abuts on the pin 19 which reaches. Due to the repulsive force of the spring 17, the insulating cylinder retainers 16 are held in a state where the distal ends thereof abut each other.
【００１４】さらに、下部環状体12には絶縁筒押さえ16
を中心から離れる方向に放射状に開いた状態で保持する
プランジャ20が設けられている。このプランジャ20は下
部環状体12の表面から絶縁筒押さえ16の表面に達して軸
方向に付勢される突起を具える。一方、絶縁筒押さえ16
の表面にはこの突起に対応した凹部21が形成されてい
る、絶縁筒押さえ16を中心から離れる方向にスライドす
るとプランジャ20の突起がこの凹部21にはまり込み、絶
縁筒押さえ16をその位置で保持する。プランジャ20を軸
方向に引っ張れば突起が凹部21から抜け、ばね17の反発
力により各絶縁筒押さえ16は互いに先端部が突き合わさ
れた状態に復帰する。Further, the lower annular body 12 has an insulating cylinder retainer 16.
A plunger 20 is provided for holding the radially open state in a direction away from the center. The plunger 20 has a projection that is urged in the axial direction from the surface of the lower annular body 12 to the surface of the insulating cylinder retainer 16. On the other hand, insulation tube holder 16
A concave portion 21 corresponding to this projection is formed on the surface of the cylinder.When the insulating cylinder retainer 16 is slid away from the center, the projection of the plunger 20 fits into this concave portion 21 and holds the insulating cylinder retainer 16 at that position. I do. When the plunger 20 is pulled in the axial direction, the protrusion comes out of the concave portion 21, and the insulating cylinder retainers 16 return to a state in which the distal ends thereof abut each other by the repulsive force of the spring 17.
【００１５】そして、絶縁筒押さえ16の先端部の端面は
絶縁筒端部の外径にほぼ対応した円弧状の湾曲面で構成
され、全絶縁筒押さえ16の先端部が突き合わされたとき
中心部に円孔が形成される。絶縁筒５の端部は、図２で
示したように、外径が細くなって段部が形成されおり、
この細径部の外周に絶縁筒押さえ先端の湾曲面が当接
し、絶縁筒５の段部端面に絶縁筒押さえ16の下面が当接
する。なお、下部環状体12の内径は後述するテーパ金具
22（図１，５）の最大径よりも大きく構成されている。The end surface of the distal end of the insulating cylinder retainer 16 is constituted by an arc-shaped curved surface substantially corresponding to the outer diameter of the end of the insulating cylinder retainer. A circular hole is formed in the hole. As shown in FIG. 2, the end of the insulating cylinder 5 has a smaller outer diameter to form a step,
The curved surface of the tip of the insulating cylinder retainer abuts on the outer periphery of the small diameter portion, and the lower surface of the insulating cylinder retainer 16 abuts on the step end surface of the insulating cylinder 5. In addition, the inner diameter of the lower annular body 12 is
22 (FIGS. 1 and 5).
【００１６】受け金具７の取り付けは、各絶縁筒押さえ
16を下部環状体12の中心から離れる方向に放射状に開い
た状態に保持しておき、ピストンロッド４の横（径方
向）から上部円盤11と下部環状体12の両切欠14,15 をは
め込むことで行う。そして、プランジャ20を引っ張って
絶縁筒押さえ16の保持を解除し、絶縁筒押さえ16の先端
部で絶縁筒５を把持する。このような受け金具７によ
り、絶縁筒押さえ16が絶縁筒上端部を周囲から中心側に
押圧し、絶縁筒５と下部環状体12とを同芯状に保持す
る。The mounting of the receiving member 7 is performed by holding each insulating cylinder.
16 is held radially open in a direction away from the center of the lower annular body 12, and the notches 14, 15 of the upper disk 11 and the lower annular body 12 are fitted from the side (radial direction) of the piston rod 4. Do with. Then, the holding of the insulating tube holder 16 is released by pulling the plunger 20, and the insulating tube 5 is gripped by the tip of the insulating tube holder 16. With such a receiving member 7, the insulating cylinder retainer 16 presses the upper end of the insulating cylinder from the periphery toward the center, thereby holding the insulating cylinder 5 and the lower annular body 12 concentrically.
【００１７】また、図５に示した治具のように受け金具
７をピストンロッド４の上端よりも上に持ち上げる必要
がなく、受け金具７の着脱作業が容易になる。そして、
ピストンロッド４の上端にナット23（図１）をねじ込ん
でシリンダ作動時に受け金具７が上方に抜けないように
する。Further, unlike the jig shown in FIG. 5, there is no need to lift the receiving member 7 above the upper end of the piston rod 4, and the attaching and detaching operation of the receiving member 7 becomes easy. And
A nut 23 (FIG. 1) is screwed into the upper end of the piston rod 4 to prevent the receiving member 7 from coming off during cylinder operation.
【００１８】絶縁筒５の拡径は次の手順で行う（図１，
５参照）。まず、シリンダ２の外周に拡径パイプ６を配
置すると共に、拡径パイプ６の上端にテーパ金具22を装
着する。また、テーパ金具22の最大径は拡径パイプ６の
外径よりも僅かに大きく構成されている。The diameter of the insulating tube 5 is expanded in the following procedure (FIG. 1,
5). First, the enlarged-diameter pipe 6 is arranged on the outer periphery of the cylinder 2, and the taper fitting 22 is attached to the upper end of the enlarged-diameter pipe 6. The maximum diameter of the taper fitting 22 is configured to be slightly larger than the outer diameter of the expanded pipe 6.
【００１９】次に、ピストンロッド４を上方に伸ばした
状態とし、ピストンロッド４の外周に絶縁筒５をはめ込
む。そして、芯出し治具８を絶縁筒５の端部にはめ込
み、ピストンロッド４の上端部に絶縁筒５の受け金具７
を前述した手順で装着する。芯出し治具８によりピスト
ンロッド４と絶縁筒５は同芯状に保持され、さらにこの
絶縁筒５と受け金具の下部環状体12とが同芯状に保持さ
れるため、絶縁筒５が傾くことを防止できる。また、芯
出し治具８により絶縁筒内部に異物が侵入することもな
い。Next, with the piston rod 4 extended upward, the insulating cylinder 5 is fitted around the piston rod 4. Then, the centering jig 8 is fitted into the end of the insulating cylinder 5, and the receiving metal 7 of the insulating cylinder 5 is attached to the upper end of the piston rod 4.
Is attached according to the procedure described above. The piston rod 4 and the insulating cylinder 5 are held concentrically by the centering jig 8, and the insulating cylinder 5 and the lower annular body 12 of the receiving metal fitting are held concentrically, so that the insulating cylinder 5 is inclined. Can be prevented. Further, no foreign matter enters the inside of the insulating cylinder by the centering jig 8.
【００２０】ここで、油圧ポンプ３からシリンダ内に作
動油を供給すると、作動油は受圧部を押圧し、ピストン
ロッド４を下方に押し下げる。それに伴って受け金具７
が絶縁筒５を下方に押圧し、これをテーパ金具16に押し
付ける。その際、絶縁筒５はピストンロッド４との同芯
性が確保されて傾くことなく押圧される。テーパ金具22
に押し付けられた絶縁筒５は徐々に拡径され、拡径され
た状態で拡径パイプ６の外周にはめ込まれていく。この
とき、下部環状体12はテーパ金具22や拡径パイプ６に貫
通され、それに伴って各絶縁筒押さえ16はばね17（図
４）の反発力に抗して放射状に拡げられる。Here, when hydraulic oil is supplied from the hydraulic pump 3 into the cylinder, the hydraulic oil presses the pressure receiving portion and pushes down the piston rod 4. Accompanying it, receiving bracket 7
Presses the insulating cylinder 5 downward, and presses it against the taper fitting 16. At this time, the insulating cylinder 5 is pressed without tilting while maintaining concentricity with the piston rod 4. Taper bracket 22
The insulating cylinder 5 pressed against the pipe is gradually expanded in diameter, and is fitted into the outer circumference of the expanded pipe 6 in the expanded state. At this time, the lower annular body 12 is penetrated by the taper fitting 22 and the expanded pipe 6, and accordingly, the insulating cylinder retainers 16 are radially expanded against the repulsive force of the spring 17 (FIG. 4).
【００２１】そして、図５に示すように、絶縁筒５が全
長にわたって拡径パイプ６の外周にはめ込まれるとシリ
ンダ２の作動を終了する。絶縁筒５のはめ込み終了後は
受け金具７を取り外してから拡径パイプ６が挿入された
絶縁筒５を取り出し、これをケーブルに挿入して接続作
業を行う。このとき、受け金具７の取り外し作業もピス
トンロッド４の横から容易に行うことができる。Then, as shown in FIG. 5, the operation of the cylinder 2 is terminated when the insulating cylinder 5 is fitted on the outer circumference of the expanded pipe 6 over the entire length. After the fitting of the insulating tube 5 is completed, the receiving metal fitting 7 is removed, the insulating tube 5 into which the expanded pipe 6 is inserted is taken out, and this is inserted into a cable to perform a connection operation. At this time, the work of removing the receiving member 7 can be easily performed from the side of the piston rod 4.
【００２２】なお、上記の説明は縦型の治具について説
明したが、シリンダを横向きにした横型とすることも可
能である。In the above description, the vertical jig has been described. However, it is also possible to use a horizontal type with a cylinder in a horizontal direction.
【００２３】[0023]
【発明の効果】以上説明したように、本発明の絶縁筒拡
大治具によれば、絶縁筒とピストンロッドとを同芯状に
保持することで、絶縁筒が傾くことを防止し、シリンダ
の押圧力を無駄なく利用することができる。また、絶縁
筒の拡径時に内部に異物が侵入することも防止できる。As described above, according to the jig for enlarging the insulating cylinder of the present invention, the insulating cylinder and the piston rod are held concentrically, thereby preventing the insulating cylinder from tilting. The pressing force can be used without waste. In addition, it is possible to prevent foreign matter from entering inside when the diameter of the insulating cylinder is expanded.
【図１】本発明絶縁筒拡大治具の絶縁筒拡径前の状態を
示す概略図である。FIG. 1 is a schematic view showing a state before the diameter of an insulating cylinder is enlarged by an insulating cylinder expanding jig of the present invention.
【図２】絶縁筒上端部における芯出し治具の装着状態を
示す一部断面図である。FIG. 2 is a partial cross-sectional view showing a mounting state of a centering jig at an upper end portion of an insulating cylinder.
【図３】受け金具を構成する上部円盤の平面図である。FIG. 3 is a plan view of an upper disk constituting a receiving bracket.
【図４】（Ａ）は受け金具を構成する下部環状体の平面
図、（Ｂ）はその側面図である。FIG. 4A is a plan view of a lower annular body constituting a receiving member, and FIG. 4B is a side view thereof.
【図５】本発明絶縁筒拡大治具の絶縁筒拡径後の状態を
示す概略図である。FIG. 5 is a schematic view showing a state after the diameter of the insulating cylinder is enlarged by the jig for expanding the insulating cylinder of the present invention.
【図６】従来の絶縁筒拡大治具の構成図である。FIG. 6 is a configuration diagram of a conventional insulating cylinder enlarging jig.
１ ベース ２ 複動油圧シリンダ ３ 油圧ポンプ
４ ピストンロッド ５ 絶縁筒 ６ 拡径パイプ ７ 受け金具 ８ 芯
出し治具 ９ 貫通孔 10 Ｏリング 11 上部円盤 12 下部環
状体 13 連結軸 14 切欠 15 切欠 16 絶縁筒押さえ 17 ばね 18
溝 19 ピン 20 プランジャ 21 凹部 22 テーパ金具 23 ナッ
ト1 Base 2 Double acting hydraulic cylinder 3 Hydraulic pump
Reference Signs List 4 Piston rod 5 Insulating cylinder 6 Large diameter pipe 7 Receptacle 8 Centering jig 9 Through hole 10 O-ring 11 Upper disk 12 Lower annular body 13 Connecting shaft 14 Notch 15 Notch 16 Insulating cylinder holder 17 Spring 18
Groove 19 Pin 20 Plunger 21 Recess 22 Taper bracket 23 Nut
───────────────────────────────────────────────────── フロントページの続き (72)発明者 高崎 博文 大阪市此花区島屋一丁目１番３号 住友電 気工業株式会社大阪製作所内 (72)発明者 後藤 達宏 大阪市此花区島屋一丁目１番３号 住友電 気工業株式会社大阪製作所内 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hirofumi Takasaki 1-3-1, Shimaya, Konohana-ku, Osaka City Inside the Osaka Works, Sumitomo Electric Industries, Ltd. (72) Inventor Tatsuhiro Goto 1-1-1 Shimaya, Konohana-ku, Osaka-shi No. 3 Sumitomo Electric Industries, Ltd. Osaka Works
Claims (3)
に絶縁筒の受け金具を装着し、ピストンロッドを軸方向
に作動して、ピストンロッドの外周に配置された絶縁筒
を受け金具で押圧し、シリンダの外周に配置された拡径
パイプの外周に絶縁筒をはめ込む絶縁筒拡大治具におい
て、 前記絶縁筒の受け金具側の端部に、絶縁筒とピストンロ
ッドとの間に介在されて両者を同芯状に保持する芯出し
治具を具えることを特徴とする絶縁筒拡大治具。An insulated cylinder receiving bracket is attached to a tip of a piston rod in a cylinder, and the piston rod is operated in an axial direction, and the insulating cylinder disposed on the outer periphery of the piston rod is pressed by a receiving bracket. An insulation tube enlarging jig in which an insulation tube is fitted to the outer periphery of a diameter-enlarged pipe disposed on the outer periphery, wherein at the end of the insulation tube on the side of the receiving metal, an insulation tube and a piston rod are interposed between the insulation tube and the piston rod. An insulated cylinder enlarging jig comprising a centering jig for holding in a shape.
ことを特徴とする請求項１記載の絶縁筒拡大治具。2. The insulating cylinder enlarging jig according to claim 1, wherein an O-ring is provided on an inner peripheral surface of the centering jig.
に絶縁筒の受け金具を装着し、ピストンロッドを軸方向
に作動して、ピストンロッドの外周に配置された絶縁筒
を受け金具で押圧し、シリンダの外周に配置された拡径
パイプの外周に絶縁筒をはめ込む絶縁筒拡大治具におい
て、 前記受け金具は、絶縁筒を周囲から中心方向に押圧する
複数の絶縁筒押さえを具えること特徴とする絶縁筒拡大
治具。3. An insulated cylinder receiving bracket is attached to the tip of a piston rod in a cylinder, the piston rod is operated in the axial direction, and the insulating cylinder disposed on the outer periphery of the piston rod is pressed by the receiving bracket to form a cylinder. An insulation tube enlarging jig for fitting an insulation tube to an outer periphery of a diameter-enlarged pipe disposed on an outer periphery, wherein the receiving metal fitting includes a plurality of insulation tube holders for pressing the insulation tube from the periphery toward the center. Tube expansion jig.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9369280A JPH11205937A (en) | 1997-12-27 | 1997-12-27 | Insulation cylinder enlarging jig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9369280A JPH11205937A (en) | 1997-12-27 | 1997-12-27 | Insulation cylinder enlarging jig |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11205937A true JPH11205937A (en) | 1999-07-30 |
Family
ID=18494031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9369280A Pending JPH11205937A (en) | 1997-12-27 | 1997-12-27 | Insulation cylinder enlarging jig |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11205937A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140096358A1 (en) * | 2011-05-20 | 2014-04-10 | 3M Innovative Properties Company | Device and method for field xpansion |
-
1997
- 1997-12-27 JP JP9369280A patent/JPH11205937A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140096358A1 (en) * | 2011-05-20 | 2014-04-10 | 3M Innovative Properties Company | Device and method for field xpansion |
| US9343893B2 (en) | 2011-05-20 | 2016-05-17 | 3M Innovative Properties Company | Device and method for field expansion |
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