JP2011147301A

JP2011147301A - Method and tool for assembling power cable termination connector

Info

Publication number: JP2011147301A
Application number: JP2010007704A
Authority: JP
Inventors: Takayuki Hirasawa; 隆行平澤; Hiroshi Niinobe; 洋新延
Original assignee: Furukawa Electric Co Ltd; Fujikura Ltd; Viscas Corp
Current assignee: Furukawa Electric Co Ltd; Fujikura Ltd; Viscas Corp
Priority date: 2010-01-18
Filing date: 2010-01-18
Publication date: 2011-07-28

Abstract

【課題】套管を電力ケーブルに容易に装着することができるようにする。
【解決手段】套管２の貫通穴８に電力ケーブル１０を挿入して電力ケーブル終端接続部１を組み立てる際、套管２を電力ケーブル１０の絶縁体（シース１４）側に向けて牽引し、導体引出棒１５を取り付けた電力ケーブル１０を套管２の貫通穴８を通じてひだ付部５の先端側へ向けて牽引するように、套管２と電力ケーブル１０を互い違いの方向に牽引することによって、電力ケーブル１０に張力を付与して電力ケーブル１０の直線性を維持した状態で、套管２の貫通穴８に電力ケーブル１０を挿入することが可能になり、套管２を電力ケーブル１０に容易に装着することができる。
【選択図】図２A sleeve can be easily attached to a power cable.
When assembling a power cable terminal connecting portion by inserting a power cable into a through hole of the cannula, the cannula is pulled toward the insulator (sheath 14) side of the power cable, By pulling the cannula 2 and the power cable 10 in alternate directions so that the power cable 10 with the conductor lead bar 15 attached is pulled toward the distal end side of the pleated portion 5 through the through hole 8 of the cannula 2. The power cable 10 can be inserted into the through-hole 8 of the cannula 2 with the tension applied to the power cable 10 to maintain the linearity of the power cable 10, and the cannula 2 is attached to the power cable 10. It can be easily installed.
[Selection] Figure 2

Description

本発明は、電力ケーブル終端接続部の組立方法及びその組立工具に関し、特に、電力ケーブルに套管を装着して電力ケーブル終端接続部を組み立てる、電力ケーブル終端接続部の組立方法及びその組立工具に関する。 The present invention relates to a method for assembling a power cable terminal connecting portion and an assembly tool therefor, and more particularly, to a method for assembling a power cable terminal connecting portion and a tool for assembling the power cable terminal connecting portion. .

電力ケーブルの終端部を保護・絶縁するために、電力ケーブルの終端部をゴム製の管状の套管に挿入した構造の電力ケーブル終端接続部がある。
ゴム製の套管に電力ケーブルを挿入して電力ケーブル終端接続部を組み立てる場合に、套管の貫通穴の内径に比べて電力ケーブルの外径が大きいので、挿入に伴い作用する摩擦力が大きく、人力での挿入が困難である。その対策として、接続工具を利用して套管を電力ケーブルに向けて牽引することで、套管を電力ケーブルに装着して電力ケーブル終端接続部を組み立てる技術が知られている（例えば、特許文献１参照。）。 In order to protect and insulate the end portion of the power cable, there is a power cable end connecting portion having a structure in which the end portion of the power cable is inserted into a rubber tubular sleeve.
When assembling a power cable end connection by inserting the power cable into the rubber sleeve, the outer diameter of the power cable is larger than the inner diameter of the through-hole of the sleeve, so the frictional force acting upon insertion is large. It is difficult to insert manually. As a countermeasure, a technique is known in which a cannula is attached to a power cable and a power cable terminal connection part is assembled by pulling the cannula toward the power cable using a connection tool (for example, Patent Documents). 1).

特開２００９−１７１７２１号公報JP 2009-171721 A

上記特許文献１の技術を適用する際、導体が太い電力ケーブルは剛性が高く曲がり難く直線性が保たれるので、套管に電力ケーブルを挿入しやすい。一方、導体が細い電力ケーブルは剛性が低く挿入に伴う摩擦力に抗することができずに電力ケーブルが曲がってしまうので、套管に電力ケーブルを挿入しにくくなり、電力ケーブル終端接続部の組み立てが困難になるという問題があった。 When applying the technique of Patent Document 1, the power cable with a thick conductor has high rigidity and is difficult to bend and maintains linearity, so that it is easy to insert the power cable into the sleeve. On the other hand, power cables with thin conductors have low rigidity and cannot resist the frictional force that accompanies insertion, so that the power cable bends, making it difficult to insert the power cable into the sleeve and assembling the power cable end connection part. There was a problem that became difficult.

本発明の課題は、套管を電力ケーブルに容易に装着することが可能な電力ケーブル終端接続部の組立方法及びその組立工具を提供することである。 An object of the present invention is to provide a method for assembling a power cable terminal connecting portion and an assembling tool thereof that can easily attach a sleeve to a power cable.

以上の課題を解決するため、本発明の一の態様は、
套管の貫通穴に電力ケーブルを挿入し、前記電力ケーブルに前記套管を装着して電力ケーブル終端接続部を組み立てる電力ケーブル終端接続部の組立方法であって、
段剥ぎ処理された前記電力ケーブルの導体の先端に取り付けた導体引出棒を前記套管の後端側から挿入する際に、前記貫通穴を通じて前記導体引出棒を前記套管の先端側に支持して前記電力ケーブルに張力を付与した状態で、前記套管を前記電力ケーブルの絶縁体側に向けて牽引することを特徴としている。 In order to solve the above problems, one aspect of the present invention provides:
A method for assembling a power cable terminal connection part by inserting a power cable into a through hole of a sleeve and mounting the sleeve to the power cable to assemble a power cable terminal connection part,
When inserting the conductor lead bar attached to the tip of the conductor of the power cable subjected to the stripping process from the rear end side of the sleeve, the conductor lead bar is supported on the tip side of the sleeve through the through hole. Then, in a state where tension is applied to the power cable, the sleeve is pulled toward the insulator side of the power cable.

この電力ケーブル終端接続部の組立方法によれば、電力ケーブルの先端側の導体引出棒を、套管の貫通穴を通じて套管の先端側に支持することで、電力ケーブルに張力を付与した状態で維持することができ、その電力ケーブルを直線状に維持することが可能である。
そして、電力ケーブルの導体の先端に取り付けた導体引出棒を套管の後端側から挿入する際に電力ケーブルに張力を付与し、その電力ケーブルの直線性を維持した状態で、套管を電力ケーブルの絶縁体側に向けて牽引することで、その電力ケーブルを貫通穴に容易に挿入でき、套管を電力ケーブルに容易に装着することができる。 According to this method of assembling the power cable terminal connection portion, the conductor lead bar on the distal end side of the power cable is supported on the distal end side of the cannula through the through hole of the cannula so that tension is applied to the power cable. The power cable can be kept straight.
Then, when inserting the conductor lead bar attached to the tip of the conductor of the power cable from the rear end side of the cannula, tension is applied to the power cable, and the cannula is connected to the power cable while maintaining the linearity of the power cable. By pulling toward the insulator side of the cable, the power cable can be easily inserted into the through hole, and the cannula can be easily attached to the power cable.

また、好ましくは、前記套管を前記電力ケーブルの絶縁体側に向けて牽引する際に、前記導体引出棒を前記套管の先端側へ向けて牽引する。 Preferably, when the cannula is pulled toward the insulator side of the power cable, the conductor lead bar is pulled toward the distal end side of the cannula.

電力ケーブルを套管の貫通穴に挿入して電力ケーブル終端接続部を組み立てる際に、套管を電力ケーブルの絶縁体側に向けて牽引し、導体引出棒の付いた電力ケーブルを套管の先端側へ向けて牽引するように、套管と電力ケーブルを互い違いの方向に牽引することによって、牽引されて張力が付与された電力ケーブルの直線性が維持される。
つまり、套管と電力ケーブルを互い違いの方向に牽引して、套管の貫通穴に電力ケーブルを挿入する組立方法によれば、直線性が維持される電力ケーブルを貫通穴に挿入しやすく、套管を電力ケーブルに容易に装着することが可能になる。 When assembling the power cable termination connection by inserting the power cable into the through hole of the sleeve, pull the sleeve toward the insulator side of the power cable, and connect the power cable with the conductor pull-out bar to the tip side of the sleeve By pulling the cannula and the power cable in alternating directions so as to be pulled toward, the linearity of the pulled and tensioned power cable is maintained.
That is, according to the assembling method in which the cannula and the power cable are pulled in alternate directions and the power cable is inserted into the through hole of the cannula, it is easy to insert the power cable that maintains linearity into the through hole. The tube can be easily attached to the power cable.

また、本発明の態様は、
套管の貫通穴に電力ケーブルを挿入し、前記電力ケーブルに前記套管を装着して電力ケーブル終端接続部を組み立てる電力ケーブル終端接続部の組立方法であって、
前記貫通穴の直線性を維持するように保持している前記套管の後端側から、段剥ぎ処理された前記電力ケーブルの導体の先端に取り付けた導体引出棒を挿入する際、前記貫通穴を通じて前記導体引出棒を前記套管の先端側へ向けて牽引することを特徴としている。 In addition, the aspect of the present invention includes:
A method for assembling a power cable terminal connection part by inserting a power cable into a through hole of a sleeve and mounting the sleeve to the power cable to assemble a power cable terminal connection part,
When inserting a conductor lead bar attached to the tip of the conductor of the power cable that has been stripped from the rear end side of the cannula held so as to maintain the linearity of the through hole, the through hole The conductor pulling bar is pulled toward the distal end side of the cannula.

この電力ケーブル終端接続部の組立方法によれば、套管の後端側から電力ケーブルを挿入する際、貫通穴の直線性を維持するように套管を保持し、電力ケーブルの導体の先端に取り付けた導体引出棒を套管の先端側へ向けて牽引することで、電力ケーブルの直線性を維持した状態でその電力ケーブルを貫通穴に容易に挿入でき、套管を電力ケーブルに容易に装着することができる。 According to this method of assembling the power cable terminal connecting portion, when inserting the power cable from the rear end side of the cannula, the cannula is held so as to maintain the straightness of the through hole, and the end of the conductor of the power cable is held. By pulling the attached conductor lead bar toward the tip of the cannula, the power cable can be easily inserted into the through hole while maintaining the straightness of the power cable, and the cannula can be easily attached to the power cable. can do.

また、本発明の他の態様は、
套管の貫通穴に電力ケーブルを挿入し、前記電力ケーブルに前記套管を装着して電力ケーブル終端接続部を組み立てる電力ケーブル終端接続部の組立工具であって、
段剥ぎ処理された前記電力ケーブルの導体の先端に取り付けた導体引出棒を、前記貫通穴を通した支持部材を介して前記套管の先端側で支持するとともに、前記電力ケーブルの絶縁体部分を前記套管の後端側で支持する架台を備え、
前記架台は、前記電力ケーブルに張力を付与した状態でその電力ケーブルを支持し、前記套管を前記電力ケーブルの絶縁体側に向けて牽引可能とすることを特徴としている。 Another aspect of the present invention is as follows:
An assembly tool for a power cable terminal connection part that inserts a power cable into a through hole of a sleeve and attaches the sleeve to the power cable to assemble a power cable terminal connection part,
A conductor lead rod attached to the tip of the conductor of the power cable that has been stripped is supported on the tip side of the sleeve through a support member that passes through the through hole, and an insulator portion of the power cable is supported. A pedestal supported on the rear end side of the sleeve,
The gantry supports the power cable in a state where tension is applied to the power cable, and allows the cannula to be pulled toward the insulator side of the power cable.

この電力ケーブル終端接続部の組立工具によれば、電力ケーブルの先端側の導体引出棒と電力ケーブルの絶縁体部分を架台に支持することで、架台が電力ケーブルに張力を付与した状態でその電力ケーブルを保持することができる。これにより、套管の貫通穴に通された支持部材に沿って、その套管を電力ケーブルの絶縁体側に向けて牽引する際に、電力ケーブルは曲がることなく直線状に維持される。
そして、組立工具と支持部材によって電力ケーブルに張力を付与し、電力ケーブルの直線性を維持した状態で、套管を電力ケーブルの絶縁体側に向けて牽引することで、その電力ケーブルを貫通穴に容易に挿入でき、套管を電力ケーブルに容易に装着することができる。 According to the assembly tool for the power cable end connection portion, the power draw end bar and the insulator portion of the power cable are supported on the gantry so that the power can be applied to the power cable in a state where the gantry applies tension to the power cable. The cable can be held. As a result, when the cannula is pulled toward the insulator side of the power cable along the support member passed through the through hole of the cannula, the power cable is kept straight without bending.
Then, tension is applied to the power cable by the assembly tool and the support member, and the cannula is pulled toward the insulator side of the power cable while maintaining the linearity of the power cable, so that the power cable is inserted into the through hole. It can be easily inserted and the cannula can be easily attached to the power cable.

本発明によれば、電力ケーブルの導体の先端に取り付けた導体引出棒を套管の貫通穴の後端側から挿入する際に電力ケーブルに張力を付与し、その電力ケーブルの直線性をより維持した状態で、套管を電力ケーブルの絶縁体側に向けて牽引することで、その電力ケーブルを貫通穴に容易に挿入でき、套管を電力ケーブルに容易に装着することができる。 According to the present invention, when the conductor lead bar attached to the tip of the conductor of the power cable is inserted from the rear end side of the through hole of the cannula, tension is applied to the power cable, and the linearity of the power cable is further maintained. In this state, by pulling the cannula toward the insulator side of the power cable, the power cable can be easily inserted into the through hole, and the cannula can be easily attached to the power cable.

電力ケーブルと、電力ケーブルに装着する套管を、一部断面にして示す説明図である。It is explanatory drawing which shows a power cable and a cannula with which a power cable is attached in a partial cross section. 電力ケーブルを套管に挿入して電力ケーブル終端接続部を組み立てる状態を示す説明図である。It is explanatory drawing which shows the state which inserts a power cable in a sleeve and assembles a power cable termination | terminus connection part. 接続工具における第１治具を示す平面図（ａ）と、図３（ａ）のｂ−ｂ線における断面図（ｂ）である。It is the top view (a) which shows the 1st jig | tool in a connection tool, and sectional drawing (b) in the bb line | wire of Fig.3 (a). 第１治具を分解して示す平面図である。It is a top view which decomposes | disassembles and shows a 1st jig | tool. 組立工具を用いて、電力ケーブルを套管に挿入して電力ケーブル終端接続部を組み立てる状態を示す説明図である。It is explanatory drawing which shows the state which inserts a power cable into a sleeve and assembles a power cable termination | terminus connection part using an assembly tool.

以下に、本発明を実施するための好ましい形態について図面を用いて説明する。但し、以下に述べる実施形態には、本発明を実施するために技術的に好ましい種々の限定が付されているが、本発明の範囲を以下の実施形態及び図示例に限定するものではない。 Hereinafter, preferred embodiments for carrying out the present invention will be described with reference to the drawings. However, the embodiments described below are given various technically preferable limitations for carrying out the present invention, but the scope of the present invention is not limited to the following embodiments and illustrated examples.

（実施形態１）
図１は、套管２の半分を断面にした状態で示し、電力ケーブル１０の一部を断面にした状態で示した説明図である。
この電力ケーブル１０に套管２を装着して電力ケーブル終端接続部１を組み立てる。 (Embodiment 1)
FIG. 1 is an explanatory view showing a half of the cannula 2 in a cross-sectional state and a part of the power cable 10 in a cross-sectional state.
The sleeve 2 is attached to the power cable 10 to assemble the power cable terminal connection 1.

套管２は、例えば、シリコンゴム等の絶縁性のゴム材料を管状に成型したものであり、先端側のひだ付部５と、後端側の胴体部４を有している。
ひだ付部５と胴体部４には、套管２の軸線方向Ｌに沿う貫通穴８が形成されている。この套管２内の貫通穴８に電力ケーブル１０を挿入する。 The cannula 2 is formed by, for example, forming an insulating rubber material such as silicon rubber into a tubular shape, and includes a pleat portion 5 on the front end side and a body portion 4 on the rear end side.
A through hole 8 is formed in the pleated portion 5 and the body portion 4 along the axial direction L of the cannula 2. The power cable 10 is inserted into the through hole 8 in the sleeve 2.

ひだ付部５は、ほぼ同じ直径を有する管体の外周面に所定の間隔をおいて形成された複数の大小のリング状のひだ６，７を備えている。 The pleated portion 5 is provided with a plurality of large and small ring-shaped pleats 6 and 7 formed at predetermined intervals on the outer peripheral surface of a tubular body having substantially the same diameter.

胴体部４は、その内部に半導電部３を内蔵している。半導電部３はストレスリリーフコーンであり、例えば、シリコンゴムにカーボンを添加した半導電性シリコンゴムにより形成されている。好ましくは、套管２をモールド成型する際に、套管２に半導電部３を一体化するように形成する。
また、胴体部４は、大径部２０と中径部２１と小径部２２を有しており、ひだ付部５側が大径部２０、套管２の後端側の端部が小径部２２、大径部２０と小径部２２の間が中径部２１となっている。図１に示すように、胴体部４の大径部２０の外径寸法は、ひだ付部５の最も大きい外径寸法に比べて大きく、大径部２０とひだ付部５の間には段差部２３が形成されている。
この段差部２３は、テーパ面を有しており、套管２の軸線方向Ｌと直交する仮想線Ｌ１とテーパ面とがなす角度はθ１である。 The body part 4 has a semiconductive part 3 incorporated therein. The semiconductive portion 3 is a stress relief cone, and is formed of, for example, semiconductive silicon rubber obtained by adding carbon to silicon rubber. Preferably, when the cannula 2 is molded, the semiconductive portion 3 is integrated with the cannula 2.
Moreover, the trunk | drum 4 has the large diameter part 20, the intermediate diameter part 21, and the small diameter part 22, the pleated part 5 side is the large diameter part 20, and the end part of the rear-end side of the cannula 2 is the small diameter part 22. A middle diameter portion 21 is formed between the large diameter portion 20 and the small diameter portion 22. As shown in FIG. 1, the outer diameter size of the large diameter portion 20 of the body portion 4 is larger than the largest outer diameter size of the pleated portion 5, and there is a step between the large diameter portion 20 and the pleated portion 5. A portion 23 is formed.
The step portion 23 has a tapered surface, and the angle formed between the virtual line L1 perpendicular to the axial direction L of the sleeve 2 and the tapered surface is θ1.

電力ケーブル１０は、中心の導体１１と、導体１１を被覆する電気絶縁層１２と、電気絶縁層１２を被覆する外部半導電層１３と、外部半導電層１３を被覆する絶縁体のシース１４と、導体１１の先端に取り付けた導体引出棒１５とを備えている。この電力ケーブル１０の端部が段剥ぎされており、シース１４、外部半導電層１３、電気絶縁層１２が順次露出し、その先端側で導体１１が露出している。
導体引出棒１５は、導電性を有し、例えば、銅、アルミニウム、銅合金、アルミニウム合金その他の金属からなる。導体引出棒１５の基端部の後面には、導体嵌入孔１６が形成されている。この導体嵌入孔１６に電力ケーブル１０の導体２の先端部を嵌入して、導体嵌入孔１６を縮径するように導体引出棒１５の基端部を圧縮することで、導体引出棒１５を導体１１に取り付けている。
また、導体引出棒１５は、電力ケーブル１０を貫通穴８に挿入しやすいようにするために、その前面部にテーパ面１７を有している。
なお、套管２の貫通穴８の内径は、電力ケーブル１０の電気絶縁層１２及び外部半導電層１３の外径寸法に比べて小さく設計しており、電力ケーブル１０を貫通穴８に挿入することで、胴体部４とひだ付部５が半径方向外側に弾性変形して膨らむようになっている。 The power cable 10 includes a central conductor 11, an electrical insulating layer 12 that covers the conductor 11, an external semiconductive layer 13 that covers the electrical insulating layer 12, and an insulating sheath 14 that covers the external semiconductive layer 13. And a conductor lead bar 15 attached to the tip of the conductor 11. The end portion of the power cable 10 is stripped, the sheath 14, the outer semiconductive layer 13, and the electrical insulating layer 12 are sequentially exposed, and the conductor 11 is exposed at the tip side.
The conductor lead bar 15 has conductivity, and is made of, for example, copper, aluminum, a copper alloy, an aluminum alloy, or other metals. A conductor insertion hole 16 is formed on the rear surface of the base end portion of the conductor lead bar 15. By inserting the distal end portion of the conductor 2 of the power cable 10 into the conductor insertion hole 16 and compressing the base end portion of the conductor extraction rod 15 so that the diameter of the conductor insertion hole 16 is reduced, the conductor extraction rod 15 is made conductive. 11 is attached.
Further, the conductor lead bar 15 has a tapered surface 17 on the front surface thereof so that the power cable 10 can be easily inserted into the through hole 8.
The inner diameter of the through hole 8 of the cannula 2 is designed to be smaller than the outer diameter dimensions of the electrical insulating layer 12 and the outer semiconductive layer 13 of the power cable 10, and the power cable 10 is inserted into the through hole 8. Thus, the body part 4 and the pleated part 5 are elastically deformed radially outward and swell.

次に、套管２の貫通穴８に電力ケーブル１０を挿入し、電力ケーブル１０に套管２を装着して電力ケーブル終端接続部１を組み立てる組立方法について説明する。
まず、電力ケーブル１０に套管２を装着する際に、套管２を電力ケーブル１０に向けて牽引するために、套管２に取り付ける接続工具４０について説明する。 Next, an assembling method for assembling the power cable terminal connecting portion 1 by inserting the power cable 10 into the through hole 8 of the cannula 2 and mounting the cannula 2 on the power cable 10 will be described.
First, the connecting tool 40 attached to the cannula 2 in order to pull the cannula 2 toward the power cable 10 when the cannula 2 is attached to the power cable 10 will be described.

接続工具４０は、図２に示すように、套管２のひだ付部５と胴体部４の間に取り付ける第１治具４１と、ひだ付部５の先端部に配置する第２治具４２と、第１治具４１と第２治具４２を連結する連結部材５１と、第１治具４１に一端部を固定する第１牽引部材５２等を備えている。 As shown in FIG. 2, the connection tool 40 includes a first jig 41 that is attached between the pleated portion 5 and the body portion 4 of the cannula 2, and a second jig 42 that is disposed at the distal end portion of the pleated portion 5. A connecting member 51 that connects the first jig 41 and the second jig 42, a first pulling member 52 that fixes one end of the first jig 41, and the like.

第１治具４１は、図３、図４に示すように、第１板部６１と第２板部６２がボルト６３で締結されてなる金属製の板状部材である。 As shown in FIGS. 3 and 4, the first jig 41 is a metal plate-like member formed by fastening a first plate portion 61 and a second plate portion 62 with bolts 63.

第１板部６１は、半円形状の第１開口部７１と、半リング形状の第１傾斜面７２と、係入部７３，７３と、第１締結部７４，７４と、第１突当面７６，７６等を有している。第１傾斜面７２は、第１開口部７１の周囲に沿って形成されており、套管２の軸線方向Ｌと直交する仮想線Ｌ１と第１傾斜面７２とがなす角度はθである。この第１傾斜面７２がなす角度は、好ましくは套管２の段差部２３のテーパ面がなす角度θ１と同じである。
第２板部６２は、半円形状の第２開口部８１と、半リング形状の第２傾斜面８２と、被係入部８３，８３と、第２締結部８４，８４と、第２突当面８６，８６等を有している。第２傾斜面８２は、第２開口部８１の周囲に沿って形成されており、套管２の軸線方向Ｌと直交する仮想線Ｌ１と第２傾斜面８２とがなす角度はθである。この第２傾斜面８２がなす角度は、好ましくは套管２の段差部２３のテーパ面がなす角度θ１と同じである。 The first plate portion 61 includes a semicircular first opening 71, a semi-ring-shaped first inclined surface 72, engaging portions 73 and 73, first fastening portions 74 and 74, and a first abutting surface 76. , 76 etc. The first inclined surface 72 is formed along the periphery of the first opening 71, and the angle formed between the first inclined surface 72 and the virtual line L <b> 1 orthogonal to the axial direction L of the cannula 2 is θ. The angle formed by the first inclined surface 72 is preferably the same as the angle θ1 formed by the tapered surface of the step portion 23 of the cannula 2.
The second plate 62 includes a semicircular second opening 81, a semi-ring-shaped second inclined surface 82, engaged portions 83 and 83, second fastening portions 84 and 84, and a second abutting surface. 86, 86, etc. The second inclined surface 82 is formed along the periphery of the second opening 81, and the angle formed between the second inclined surface 82 and the virtual line L <b> 1 perpendicular to the axial direction L of the cannula 2 is θ. The angle formed by the second inclined surface 82 is preferably the same as the angle θ1 formed by the tapered surface of the step portion 23 of the cannula 2.

そして、第１突当面７６，７６と第２突当面８６，８６を突き合わせるように、第２板部６２の被係入部８３，８３に第１板部６１の係入部７３，７３を嵌め合わせ、第１締結部７４，７４と第２締結部８４，８４をボルト６３で締め付けて、第１治具４１を形成する。
この第１治具４１における傾斜面（第１傾斜面７２、第２傾斜面８２）がある面に前記第１牽引部材５２を固定するリング部材３０を設けており、その反対側の面に前記連結部材５１を固定するリング部材９５を設けている。 Then, the engaging portions 73 and 73 of the first plate portion 61 are fitted to the engaged portions 83 and 83 of the second plate portion 62 so that the first abutting surfaces 76 and 76 and the second abutting surfaces 86 and 86 are abutted. The first fastening parts 74 and 74 and the second fastening parts 84 and 84 are fastened with bolts 63 to form the first jig 41.
The ring member 30 for fixing the first traction member 52 is provided on the surface of the first jig 41 having the inclined surfaces (the first inclined surface 72 and the second inclined surface 82), and the opposite surface is provided with the ring member 30. A ring member 95 for fixing the connecting member 51 is provided.

このように第１治具４１は、第１板部６１と第２板部６２を有しており、第１板部６１と第２板部６２で、套管２の段差部２３を挟み込むように取り付けることができるので、ひだ付部５のひだ６，７等を損傷しないように、第１治具４１を套管２に取り付けることができる。
また、第１治具４１において、半径Ｒの第１開口部７１と半径Ｒの第２開口部８１とが合わさってなる円形開口の直径２Ｒは、套管２のひだ付部５の管体の外径寸法よりも大きく設計している。これは、電力ケーブル１０を套管２の貫通穴８に挿入することで、ひだ付部５が半径方向外側に弾性変形して膨らみ、ひだ付部５の外径寸法が大きくなった際に、このひだ付部５の外周部が第１治具４１に押し付けられて、ひだ付部５が損傷してしまうことを防ぐためである。 As described above, the first jig 41 has the first plate portion 61 and the second plate portion 62 so that the step portion 23 of the cannula 2 is sandwiched between the first plate portion 61 and the second plate portion 62. Therefore, the first jig 41 can be attached to the cannula 2 so as not to damage the pleats 6, 7, etc. of the pleated portion 5.
Further, in the first jig 41, the diameter 2R of the circular opening formed by combining the first opening 71 having the radius R and the second opening 81 having the radius R is equal to that of the tubular body of the pleated portion 5 of the cannula 2. Designed to be larger than the outer diameter. This is because when the power cable 10 is inserted into the through-hole 8 of the cannula 2, the pleated portion 5 is elastically deformed and bulges outward in the radial direction, and the outer diameter of the pleated portion 5 increases. This is because the outer peripheral portion of the pleated portion 5 is pressed against the first jig 41 to prevent the pleated portion 5 from being damaged.

第２治具４２は、中心に開口９１が形成された１枚の金属板からなる板状部材である。
第２治具４２は、開口９１と、開口９１の周囲に形成された受容部９２と、リング部材９３を有している。
受容部９２は、套管２のひだ付部５の先端部を保持し、その先端部を収容可能な内径のサイズを有している。受容部９２の内径は、ひだ付部５の外径寸法よりも大きく設計している。これは、套管２の貫通穴８に電力ケーブル１０を挿入した際に、ひだ付部５が半径方向外側に弾性変形して膨らむことを考慮した結果である。
開口９１は、受容部９２の略中央に形成されており、ひだ付部５内の貫通穴８から突出する導体引出棒１５が突き出るようになっている。 The 2nd jig | tool 42 is a plate-shaped member which consists of one metal plate in which the opening 91 was formed in the center.
The second jig 42 includes an opening 91, a receiving portion 92 formed around the opening 91, and a ring member 93.
The receiving portion 92 has a size of an inner diameter that holds the distal end portion of the pleated portion 5 of the cannula 2 and can accommodate the distal end portion. The inner diameter of the receiving portion 92 is designed to be larger than the outer diameter of the pleated portion 5. This is a result of considering that when the power cable 10 is inserted into the through hole 8 of the cannula 2, the pleated portion 5 is elastically deformed and bulges outward in the radial direction.
The opening 91 is formed substantially at the center of the receiving portion 92 so that the conductor lead bar 15 protruding from the through hole 8 in the pleated portion 5 protrudes.

そして、第２治具４２におけるリング部材９３に連結部材５１の一端部を固定し、その連結部材５１の他端部を第１治具４１におけるリング部材９５に固定している。
連結部材５１は、伸びの少ないまたは電力ケーブル１０を挿入するための牽引力の範囲では伸びの無い線状部材（含む、帯状部材）であり、例えば、ナイロン製ロープやナイロン製ベルト、金属ワイヤ、金属チェーンや金属ベルトあるいは金属棒である。この連結部材５１は、ひだ付部５の軸線方向の長さと略同じ長さを有している。
また、第１治具４１におけるリング部材３０には、第１牽引部材５２の一端部を固定している。第１牽引部材５２は連結部材５１と同様の線状部材あるいは帯状部材である。 One end portion of the connecting member 51 is fixed to the ring member 93 in the second jig 42, and the other end portion of the connecting member 51 is fixed to the ring member 95 in the first jig 41.
The connecting member 51 is a linear member (including a belt-like member) that has little elongation or does not stretch within the range of traction force for inserting the power cable 10. For example, a nylon rope, nylon belt, metal wire, metal Chains, metal belts or metal bars. The connecting member 51 has substantially the same length as the length of the pleated portion 5 in the axial direction.
Further, one end of the first pulling member 52 is fixed to the ring member 30 in the first jig 41. The first pulling member 52 is a linear member or a strip-like member similar to the connecting member 51.

次に、接続工具４０を用いて電力ケーブル１０に套管２を装着し、電力ケーブル終端接続部１を組み立てる組立方法について説明する。 Next, an assembling method for assembling the power cable terminal connecting portion 1 by attaching the sleeve 2 to the power cable 10 using the connecting tool 40 will be described.

図２に示すように、作業者は、第２治具４２の受容部９２に套管２のひだ付部５の先端部を収め、第１治具４１の第１板部６１と第２板部６２で段差部２３を挟み込むようにして、接続工具４０を套管２に取り付ける。
また、作業者は、電力ケーブル１０の導体引出棒１５の先端部にリング部材１８を固定し、そのリング部材１８に第１牽引部材５２と同様の材料からなる第２牽引部材５３の一端部を固定する。その第２牽引部材５３は套管２の貫通穴８を通して、第２牽引部材５３の他端部をひだ付部５の先端側から引き出す。 As shown in FIG. 2, the operator places the tip end portion of the pleated portion 5 of the cannula 2 in the receiving portion 92 of the second jig 42, and the first plate portion 61 and the second plate of the first jig 41. The connecting tool 40 is attached to the cannula 2 so that the stepped portion 23 is sandwiched between the portions 62.
Further, the operator fixes the ring member 18 to the distal end portion of the conductor lead bar 15 of the power cable 10, and attaches one end portion of the second traction member 53 made of the same material as the first traction member 52 to the ring member 18. Fix it. The second pulling member 53 pulls out the other end portion of the second pulling member 53 from the front end side of the pleated portion 5 through the through hole 8 of the cannula 2.

そして、第１治具４１に固定している第１牽引部材５２の他端部を、図示しない牽引力発生装置で第１治具４１が第２治具４２から離間する方向に向けて牽引することで、套管２を電力ケーブル１０の絶縁体側に向けて牽引する。
また、第１牽引部材５２を牽引して接続工具４０を取り付けた套管２を牽引することに合わせて、導体引出棒１５先端のリング部材１８に固定している第２牽引部材５３の他端部を、図示しない牽引力発生装置で套管２の牽引方向とは逆向きに牽引し、電力ケーブル１０を套管２のひだ付部５の先端側へ向けて牽引する。牽引される電力ケーブル１０には張力が付与されて、電力ケーブル１０は直線状に維持される。
この牽引により、導体引出棒１５が套管２の貫通穴８の後端から挿入されて、電力ケーブル１０が貫通穴８に圧入されて引き込まれていく。なお、牽引は、導体引出棒１５が套管２のひだ付部５の先端から突出するまで行なう。 Then, the other end portion of the first traction member 52 fixed to the first jig 41 is pulled in a direction in which the first jig 41 is separated from the second jig 42 by a traction force generator (not shown). Then, the cannula 2 is pulled toward the insulator side of the power cable 10.
Further, the other end of the second pulling member 53 fixed to the ring member 18 at the tip of the conductor pull-out bar 15 in accordance with pulling the first pulling member 52 and pulling the cannula 2 to which the connection tool 40 is attached. The traction force generator (not shown) is used to pull the portion in the direction opposite to the traction direction of the cannula 2, and the power cable 10 is pulled toward the distal end side of the pleated portion 5 of the cannula 2. A tension is applied to the pulled power cable 10 so that the power cable 10 is maintained in a straight line.
By this pulling, the conductor lead bar 15 is inserted from the rear end of the through hole 8 of the cannula 2, and the power cable 10 is press-fitted into the through hole 8 and drawn. The pulling is performed until the conductor lead bar 15 protrudes from the tip of the pleated portion 5 of the sleeve 2.

このように、電力ケーブル１０に套管２を装着して電力ケーブル終端接続部１を組み立てる際に、套管２と電力ケーブル１０を互い違いの方向に牽引することによって、牽引されて張力が付与された電力ケーブル１０の直線性が維持される。
つまり、套管２と電力ケーブル１０を互い違いの方向に牽引して、套管２の貫通穴８に電力ケーブル１０を挿入する組立方法によれば、電力ケーブル１０の直線性がより維持されるので貫通穴８に挿入しやすく、套管２を電力ケーブル１０に容易に装着することが可能になる。 In this way, when the cannula 2 is attached to the power cable 10 and the power cable terminal connection portion 1 is assembled, the cannula 2 and the power cable 10 are pulled in different directions to be pulled and tension is applied. The linearity of the power cable 10 is maintained.
That is, according to the assembly method in which the cannula 2 and the power cable 10 are pulled in alternate directions and the power cable 10 is inserted into the through hole 8 of the cannula 2, the linearity of the power cable 10 is further maintained. The cannula 2 can be easily inserted into the through hole 8 and can be easily attached to the power cable 10.

例えば、導体断面積６００ｍｍ^２以上のＣＶケーブルのように、導体が太く電力ケーブルの剛性が高い場合には、その電力ケーブルは曲がり難いので、套管の貫通穴に電力ケーブルを挿入することに支障が生じることは少ない。
これに対し、例えば、導体断面積４００ｍｍ^２以下のＣＶケーブルのように、導体が細く電力ケーブルの剛性が低い場合、従来のように、套管を電力ケーブルに向けて牽引して、套管の貫通穴に電力ケーブルを挿入する手法では、張力が付与されていない電力ケーブルは曲がりやすく、套管の貫通穴に電力ケーブルを挿入する際に支障をきたすことがあった。
そこで、本発明のように、套管２と電力ケーブル１０を互い違いの方向に牽引して、套管２の貫通穴８に電力ケーブル１０を挿入する組立方法によれば、剛性が低い電力ケーブル１０であっても、牽引による張力が付与されることで直線性が維持されるので、どのような導体断面積の電力ケーブル１０に対しても套管２を容易に装着することができるのである。 For example, when the conductor is thick and the rigidity of the power cable is high, such as a CV cable having a conductor cross-sectional area of 600 mm ² or more, it is difficult to bend the power cable, which hinders insertion of the power cable into the through hole of the sleeve. Is unlikely to occur.
On the other hand, for example, when the conductor is thin and the rigidity of the power cable is low, such as a CV cable having a conductor cross-sectional area of 400 mm ² or less, the cannula is pulled toward the power cable and the cannula is In the method of inserting the power cable into the through hole, the power cable which is not applied with tension is easily bent, which sometimes hinders insertion of the power cable into the through hole of the cannula.
Therefore, according to the assembling method in which the cannula 2 and the power cable 10 are pulled in alternate directions and the power cable 10 is inserted into the through hole 8 of the cannula 2 as in the present invention, the power cable 10 having low rigidity is used. Even so, since the linearity is maintained by applying the tension by pulling, the cannula 2 can be easily attached to the power cable 10 of any conductor cross-sectional area.

（実施形態２）
次に、本発明に係る電力ケーブル終端接続部の組立方法に関する実施形態２について説明する。なお、実施形態１と同様の構成については、同符号を付して説明を割愛する。 (Embodiment 2)
Next, a second embodiment relating to a method for assembling a power cable terminal connecting portion according to the present invention will be described. In addition, about the structure similar to Embodiment 1, the same code | symbol is attached | subjected and description is omitted.

図５は、電力ケーブル１０に套管２を装着して電力ケーブル終端接続部１を組み立てる際に、接続工具４０とともに使用する組立工具１００を示す概略図である。
組立工具１００は、前面部１０１、後面部１０２、前面部１０１と後面部１０２を繋ぐ側面部１０３等を備える架台であるフレーム１００ａを有している。
前面部１０１の内面に、リング部材１１０を配設している。
後面部１０２には、組立工具１００の外側から貫入された電力ケーブル１０をシース１４の部分で保持するケーブル保持部１２０を配設している。
そして、組立工具１００の前面部１０１と後面部１０２の間の長さは、套管２の軸線方向の長さの約２倍である。 FIG. 5 is a schematic diagram showing an assembly tool 100 used together with the connection tool 40 when the sleeve 2 is attached to the power cable 10 to assemble the power cable terminal connection portion 1.
The assembly tool 100 includes a frame 100a that is a frame including a front surface portion 101, a rear surface portion 102, a side surface portion 103 that connects the front surface portion 101 and the rear surface portion 102, and the like.
A ring member 110 is disposed on the inner surface of the front surface portion 101.
The rear surface portion 102 is provided with a cable holding portion 120 that holds the power cable 10 penetrating from the outside of the assembly tool 100 at the portion of the sheath 14.
The length between the front surface portion 101 and the rear surface portion 102 of the assembly tool 100 is about twice the axial length of the cannula 2.

この組立工具１００と接続工具４０を用いて電力ケーブル１０に套管２を装着し、電力ケーブル終端接続部１を組み立てる組立方法について説明する。 An assembly method for assembling the power cable terminal connection portion 1 by attaching the sleeve 2 to the power cable 10 using the assembly tool 100 and the connection tool 40 will be described.

図５に示すように、作業者は、組立工具１００の内側に套管２を載置し、その套管２に接続工具４０を取り付ける。なお、套管２は、ひだ付部５を前面部１０１側に向けて、前面部１０１寄りに載置される。
次いで、作業者は、導体引出棒１５が前面部１０１と後面部１０２の略中間に位置するように、ケーブル保持部１２０から組立工具１００内に電力ケーブル１０を貫入する。その電力ケーブル１０の導体引出棒１５の先端部にリング部材１８を固定して、リング部材１８に第２牽引部材５３の一端部を固定する。その第２牽引部材５３を套管２の貫通穴８に通し、ひだ付部５の先端側から第２牽引部材５３の他端部を引き出して、その第２牽引部材５３の他端部を前面部１０１のリング部材１１０に固定する。そして、貫通穴８を通した第２牽引部材５３を介し、導体引出棒１５を套管２の先端側に支持して電力ケーブル１０に張力を付与する。ここで、第２牽引部材５３を牽引することはなく、第２牽引部材５３は電力ケーブル１０の導体引出棒１５を組立工具１００の前面部１０１のリング部材１１０に繋いで、その導体引出棒１５を套管２の先端側で支持する支持部材として機能している。
この状態で、第１治具４１に固定している第１牽引部材５２の他端部を、図示しない牽引力発生装置で第１治具４１が第２治具４２から離間する方向に向けて牽引することで、套管２を電力ケーブル１０の絶縁体側に向けて牽引する。この牽引の際、電力ケーブル１０には張力が付与されており、電力ケーブル１０は直線状に維持される。
そして、この牽引により導体引出棒１５が套管２の貫通穴８の後端から挿入されて、電力ケーブル１０が貫通穴８に圧入されて引き込まれていく。なお、牽引は、導体引出棒１５が套管２のひだ付部５の先端から突出するまで行なう。 As shown in FIG. 5, the operator places the cannula 2 inside the assembly tool 100 and attaches the connection tool 40 to the cannula 2. The cannula 2 is placed closer to the front surface portion 101 with the pleated portion 5 facing the front surface portion 101 side.
Next, the operator penetrates the power cable 10 from the cable holding part 120 into the assembly tool 100 so that the conductor lead bar 15 is positioned approximately in the middle between the front face part 101 and the rear face part 102. The ring member 18 is fixed to the tip of the conductor lead bar 15 of the power cable 10, and one end of the second pulling member 53 is fixed to the ring member 18. The second traction member 53 is passed through the through hole 8 of the cannula 2, the other end portion of the second traction member 53 is pulled out from the front end side of the pleated portion 5, and the other end portion of the second traction member 53 is placed on the front surface. It is fixed to the ring member 110 of the part 101. Then, the conductor pulling bar 15 is supported on the distal end side of the cannula 2 through the second pulling member 53 through the through hole 8, and tension is applied to the power cable 10. Here, the second pulling member 53 is not pulled, and the second pulling member 53 connects the conductor extraction rod 15 of the power cable 10 to the ring member 110 of the front surface portion 101 of the assembly tool 100, and the conductor extraction rod 15. Is functioning as a support member that supports the tube 2 at the distal end side of the sleeve 2.
In this state, the other end portion of the first traction member 52 fixed to the first jig 41 is pulled toward the direction in which the first jig 41 is separated from the second jig 42 by a traction force generator (not shown). Thus, the cannula 2 is pulled toward the insulator side of the power cable 10. During this pulling, tension is applied to the power cable 10 and the power cable 10 is maintained in a straight line.
Then, by this pulling, the conductor lead bar 15 is inserted from the rear end of the through hole 8 of the cannula 2, and the power cable 10 is press-fitted into the through hole 8 and drawn. The pulling is performed until the conductor lead bar 15 protrudes from the tip of the pleated portion 5 of the sleeve 2.

このように、電力ケーブル１０に套管２を装着して電力ケーブル終端接続部１を組み立てる際に、導体引出棒１５が支持部材である第２牽引部材５３を介して組立工具１００に支持されており、電力ケーブル１０に張力が付与されているので、電力ケーブル１０は直線状に維持される。
つまり、組立工具１００を利用して電力ケーブル１０に張力を付与し、電力ケーブル１０の直線性を維持するようにすることで、電力ケーブル１０を牽引せずに套管２を一方向に牽引することによっても、直線性をより維持した状態で電力ケーブル１０を貫通穴８に良好に挿入でき、套管２を電力ケーブル１０に容易に装着することが可能になる。
そして、組立工具１００を利用して電力ケーブル１０に張力を付与した状態で、電力ケーブル１０に向けて套管２を牽引して、套管２の貫通穴８に電力ケーブル１０を挿入する組立方法によれば、剛性が低い電力ケーブル１０であっても付与された張力によって直線性が維持されるので、どのような規格の電力ケーブル１０に対しても套管２を容易に装着することができる。 As described above, when the sleeve 2 is attached to the power cable 10 and the power cable terminal connection portion 1 is assembled, the conductor lead bar 15 is supported by the assembly tool 100 via the second pulling member 53 which is a support member. And since tension | tensile_strength is provided to the power cable 10, the power cable 10 is maintained in linear form.
That is, by applying tension to the power cable 10 using the assembly tool 100 and maintaining the linearity of the power cable 10, the cannula 2 is pulled in one direction without pulling the power cable 10. Also by this, the power cable 10 can be satisfactorily inserted into the through hole 8 in a state where the linearity is further maintained, and the cannula 2 can be easily attached to the power cable 10.
Then, an assembly method for pulling the cannula 2 toward the power cable 10 and inserting the power cable 10 into the through hole 8 of the cannula 2 in a state where tension is applied to the power cable 10 using the assembly tool 100. Since the linearity is maintained by the applied tension even with the power cable 10 having low rigidity, the cannula 2 can be easily attached to the power cable 10 of any standard. .

なお、本発明の適用は上述した実施形態に限定されることなく、本発明の趣旨を逸脱しない範囲で適宜変更可能である。 The application of the present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the spirit of the present invention.

例えば、実施形態１において、套管２と電力ケーブル１０を互い違いの方向に牽引し、套管２の貫通穴８に電力ケーブル１０を挿入するとしたが、套管２が変形しないように張力を付与して保持した状態で、電力ケーブル１０を一方向に牽引して套管２の貫通穴８に電力ケーブル１０を挿入してもよい。
つまり、貫通穴２の直線性を維持するように套管２を保持した状態で、電力ケーブル１０の導体１１の先端に取り付けた導体引出棒１５を套管２の後端側から挿入する際、その貫通穴８を通じて導体引出棒１５を套管２のひだ付部５の先端側へ向けて牽引することで、套管２に電力ケーブル１０を組み付けて、電力ケーブル終端接続部１を組み立ててもよい。このような手法によっても、套管２を電力ケーブル１０に容易に装着することができる。 For example, in the first embodiment, the cannula 2 and the power cable 10 are pulled in alternate directions, and the power cable 10 is inserted into the through hole 8 of the cannula 2, but tension is applied so that the cannula 2 is not deformed. In this state, the power cable 10 may be pulled in one direction and inserted into the through hole 8 of the cannula 2.
That is, when the conductor lead bar 15 attached to the tip of the conductor 11 of the power cable 10 is inserted from the rear end side of the cannula 2 while the cannula 2 is held so as to maintain the straightness of the through hole 2, Even if the power cable terminal connection portion 1 is assembled by assembling the power cable 10 to the sleeve 2 by pulling the conductor lead bar 15 toward the distal end side of the pleated portion 5 of the sleeve 2 through the through hole 8. Good. Also by such a technique, the cannula 2 can be easily attached to the power cable 10.

１電力ケーブル終端接続部
２套管
２０大径部
２３段差部
４胴体部
５ひだ付部
６、７ひだ
８貫通穴
１０電力ケーブル
１１導体
１４シース（絶縁体）
１５導体引出棒
１８リング部材
４０接続工具
４１第１治具
４２第２治具
５１連結部材
５２第１牽引部材
５３第２牽引部材（支持部材）
１００組立工具
１００ａフレーム（架台）
１１０リング部材
１２０ケーブル保持部 DESCRIPTION OF SYMBOLS 1 Electric power cable termination | terminus connection part 2 Sleeve 20 Large diameter part 23 Level | step-difference part 4 trunk | drum 5 pleated part 6, 7 pleat 8 through-hole 10 power cable 11 conductor 14 sheath (insulator)
DESCRIPTION OF SYMBOLS 15 Conductor extraction rod 18 Ring member 40 Connection tool 41 1st jig | tool 42 2nd jig | tool 51 Connection member 52 1st traction member 53 2nd traction member (support member)
100 assembly tool 100a frame
110 Ring member 120 Cable holding part

Claims

A method for assembling a power cable terminal connection part by inserting a power cable into a through hole of a sleeve and mounting the sleeve to the power cable to assemble a power cable terminal connection part,
When inserting the conductor lead bar attached to the tip of the conductor of the power cable subjected to the stripping process from the rear end side of the sleeve, the conductor lead bar is supported on the tip side of the sleeve through the through hole. And pulling the sleeve toward the insulator side of the power cable in a state where tension is applied to the power cable.

2. The power cable terminal connection portion according to claim 1, wherein when the cannula is pulled toward the insulator side of the power cable, the conductor pulling bar is pulled toward the tip side of the cannula. Assembly method.

A method for assembling a power cable terminal connection part by inserting a power cable into a through hole of a sleeve and mounting the sleeve to the power cable to assemble a power cable terminal connection part,
When inserting a conductor lead bar attached to the tip of the conductor of the power cable that has been stripped from the rear end side of the cannula held so as to maintain the linearity of the through hole, the through hole The method of assembling the power cable terminal connecting portion, wherein the conductor lead bar is pulled toward the distal end side of the cannula.

An assembly tool for a power cable terminal connection part that inserts a power cable into a through hole of a sleeve and attaches the sleeve to the power cable to assemble a power cable terminal connection part,
A conductor lead rod attached to the tip of the conductor of the power cable that has been stripped is supported on the tip side of the sleeve through a support member that passes through the through hole, and an insulator portion of the power cable is supported. A pedestal supported on the rear end side of the sleeve,
Assembling the power cable terminal connecting portion, wherein the gantry supports the power cable in a state where tension is applied to the power cable, and allows the sleeve to be pulled toward the insulator side of the power cable. tool.