JPH06217434A - Cable head mounting/demounting tool - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] When attaching or detaching the cable head used as the cover of the terminal connection part of the switch for underground power distribution line, without imposing an unreasonable posture or effort on the operator, Provide a cable head attachment / detachment tool that enables efficient work. [Structure] An insertion jig 10 set on a taper portion of a cable head 51 and an extraction jig 20 fastened on a body portion.
The tool main body 30 that engages and disengages both of these jigs at their tips forms a removable tool. The tool body 30 is
The front arm 31, the rear arm 32, and the support leg 33 are connected by a support shaft 34 so as to be foldable.
At the rear end, a stopper 3 for locking the rear arm 32 that has been spread
5 is provided. When the cable head 51 is inserted, the engaging portion 36 at the tool tip is engaged with the protruding pin 14 of the insertion jig 10 set in the taper portion, and the handle 37 at the rear end of the tool is pushed down with the support leg 33 at the center as a fulcrum. The lever action pushes up the cable head 51 for insertion.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention, when connecting a cable to an electric device such as a switch for an underground power distribution line, after connecting the terminal at the end of the bushing and the terminal at the end of the cable, cover them for insulation. The present invention relates to a tool for attaching and detaching an insulating tube, that is, a cable head.

[0002]

2. Description of the Related Art Conventionally, a cable head (insulating cylinder) is detached and attached by manually inserting or pulling out the cable head manually by an operator or by using a tool such as a crowbar. The means of pushing it in while pulling it out and pulling it out while opening the connection part were adopted.

[0003]

However, with such means, when working in a power distribution tower in which a multi-circuit switch is housed, the power distribution tower has been made more compact in recent years. Since there is not enough work space and the worker is forced to take an unreasonable posture, the force necessary for the work cannot be fully exerted, and there has been a problem that the work of attaching and detaching the cable head becomes difficult. There is also a problem that it is difficult to pull out manually with a cable head several years after connection.

Therefore, the present invention efficiently attaches and detaches a cable head (insulating cylinder) used as a cover for a terminal connecting portion such as a switch for an underground power distribution line without imposing an unreasonable posture or labor on an operator. An object of the present invention is to provide a cable head attachment / detachment tool that can perform well and improve workability.

[0005]

In order to achieve the above object, a cable head attachment / detachment tool of the present invention has a cable head insertion jig and a withdrawal jig, and a tool body for operating both jigs. Or a tool for inserting and withdrawing the cable head and a tool body for operating the tool, and has the following features.

First, the following structure is adopted as a cable head attachment / detachment tool consisting of a cable head insertion jig, a withdrawal jig, and one tool body for operating both jigs. That is, the attachment / detachment tool for the cable head of the present invention is
An insertion jig that is attached to the taper part of the cable head, and an extraction jig that tightens the body part of the cable head,
Insert the cable head by engaging the tips of these jigs with the lever action that uses the center post as a fulcrum when inserting the cable head, and with the lever action that uses a part of the power distribution tower as the fulcrum during extraction. And a tool main body for pulling out, both of these insertion jigs and pull-out jigs are provided with protruding pins on both sides of the body, and the tip of the tool main body is engaged with the protruding pins. Forming a part.

The cable head insertion jig has a ring shape, a conical surface corresponding to the taper portion of the cable head is formed on the inner periphery thereof, and a notch for inserting the cable is formed in a part of the peripheral wall. ing.

The drawing jig has a two-part shape and is fastened by a hinge. That is, a pair of semi-circular fastening pieces along the outer circumference of the body of the cable head are provided so as to be openable and closable around the support shaft. A pull-down plate having a raised friction coefficient to increase the friction coefficient is attached, and a snap lock is provided at the open ends of both fastening pieces to enable fastening. Then, the receiving metal fitting of this snap lock is slidably provided with an adjusting screw so that the tightening force of the fastening piece can be adjusted. As a result, it is possible to absorb the manufacturing tolerance of the cable head due to the difference in the manufacturer and to fasten the extraction jig to the body of the cable head without loosening.

The tool body has a forked front arm having an engaging portion for engaging the projecting pins of both jigs at the tip, and a handle for operating the tool body at the time of attachment / detachment work of the cable head at the rear end. The bifurcated rear arm that is provided is foldably connected by a central support shaft. A stopper is provided at the rear end of the front arm so that the widened rear arm can be locked at a position where it is substantially in line with the front arm. In addition, a support leg that serves as a fulcrum when the cable head is inserted is rotatably attached to a support shaft that connects both arms.

The cable head attaching / detaching tool of the present invention, which comprises one jig for inserting and extracting the cable head and one tool body for operating the jig, has the following structure. That is, in place of the insertion jig described above, an adapter that fits on the upper portion of the extraction jig described above and is inserted into the taper portion of the cable head is provided, and the adapter is interposed in the extraction jig, thereby It is designed to be used as an insertion jig. Therefore, if this adapter is used, it suffices to have a drawing jig, and it is not necessary to separately prepare an inserting jig. And this adapter is made of elastic material such as rubber in a ring shape, and has a conical surface corresponding to the taper part of the cable head on its inner circumference, and a slit for inserting the cable in a part of the peripheral wall. And a flange is formed on the outer periphery of the upper part for restricting the falling out when the drawing jig is fitted.

[0011]

[Operation] When inserting the cable head, set the insertion jig on the taper of the cable head and
The engaging pin at the tip of the tool body is engaged with the protruding pin of the insertion jig, and the handle at the rear end of the tool body is pushed down with the support leg at the center as a fulcrum. Then, the tip of the tool body is raised by the action of the lever, and the cable head can be inserted into the switch relatively easily.

When pulling out the cable head, the pulling jig is fastened to the body of the cable head, and the projecting pin of the pulling jig is engaged with the engaging portion at the tip of the tool main body to distribute the power. Place the upper surface of the side of the tool body on the bottom surface of the frame, etc., and pull up the handle at the rear end of the tool body using this as the fulcrum. Then, the tip of the tool body is lowered by the action of the lever, and the cable head can be pulled out relatively easily.

When the cable head is inserted by using the adapter, the adapter is set on the taper portion of the cable head and then the extraction jig is tightened and set on the outer periphery thereof, and then the extraction of the extraction jig is performed. The engaging portion at the tip of the tool body is engaged with the pin, and the handle at the rear end of the tool body is pushed down with the support leg as a fulcrum. Then, the tip of the tool body is raised by the action of the lever, and the cable head can be inserted relatively easily.

[0014]

Embodiments of the present invention will be described below with reference to FIGS. First, FIGS. 1 and 2 show a plan view and a side view of an insertion jig of the present invention.
Is made of a lightweight material such as aluminum in a ring shape and has a conical surface 1 corresponding to the lower tapered portion of the cable head on the inner periphery thereof.
1 is formed. Further, a notch 13 having a size into which a cable can be inserted at the time of attachment to a cable head is formed in a part of the peripheral wall (body) 12, and the peripheral wall separated by 90 degrees from the center of the notch 13 is formed. On both sides of 12,
Projecting pins 14 and 1 to be engaged with the tip of the tool body described later
4 is projected.

This insertion jig 10 is, as shown in FIG.
The cable 50 is inserted from the side of the notch 13 and attached to the taper portion 52 of the cable head 51. Then, when the projecting pins 14, 14 are engaged and pushed up by the tool main body described later, the cable head 50 is pushed up and inserted into the switch bottom plate 53 to be attached. This insertion jig 1
0 is removed from the taper portion 52 after the insertion and attachment of the cable head 51 is completed. In addition, this insertion jig 10
According to this, since the conical surface 11 is formed on the inner circumference, the taper portion 52 of the cable head 51 is not damaged.

Next, FIGS. 4 to 7 show an example of a drawing jig. FIG. 4 is a plan view of the drawing jig, FIG. 5 is a left side view thereof, FIG. 6 is a right side view thereof, and FIG. FIG. 5 is a cross-sectional view taken along the line AA of FIG. 4 showing the shape of the pull-down plate attached to the fastening piece.

The pull-out jig 20 is made of a lightweight material such as aluminum in a two-piece shape and is fastened by a hinge. The pull-out jig 20 is a pair of semi-circular fastening pieces 21, 21 extending along the outer circumference of the body of the cable head. Is formed so as to be openable and closable around the support shaft 22. Then, the support shaft 2 serving as the opening and closing support point of this tightening piece
In the vicinity of 2 and the opening end of the fastening piece, projecting pins 23, 23 are provided which are engaged with the tip of the tool body described later.

Pull-down plates 24, 24 having corrugated ridges are attached to the inner circumferences of both fastening pieces 21, 21.
A snap lock 25 is provided at the open ends of the pins 1 and 21 so that they can be fastened. With this snap lock 25, the pull-out jig 20 can be easily attached to the body of the cable head with one touch, and it can be slid down by the corrugated ridges of the pull-down plates 24, 24 attached to the fastening pieces 21, 21. It can be securely fastened to the body of the cable head.
Since the snap lock 25 is arranged in the vicinity of one of the projecting pins 23, that is, right next to it, the snap lock 25 can always be attached so that the position of the snap lock 25 is in a direction with a wide space in the power distribution tower. It is easy to attach the extraction jig 20 to the cable head located at the right corner or the left corner of the tower.

Then, the receiving metal fitting 26 of this snap lock 25
Is slidably attached to one of the fastening pieces 21, and the adjusting screw 27 is screwed into a nut 26a fixed to the receiving metal fitting 26, and is rotated in the forward and reverse directions.
By sliding 6 in a desired direction, the tightening force of the fastening pieces 21, 21 can be adjusted. As a result, it is possible to absorb the manufacturing tolerance of the cable head, which differs depending on the manufacturer, and to fasten the pull-out jig 20 without loosening. A folding handle 28 that can be folded is attached to the adjusting screw 27 to facilitate the manual tightening of the adjusting screw 27. In addition, the hole 2 is formed in the folding handle 28.
Since 8a is provided, a driver can be inserted into this hole 28a and turned when it is difficult to turn it by hand.

In this embodiment, the down plates 24, 2
Although 4 has a corrugated rib, it is not limited to this shape, and as shown in FIG. 8, a down plate 24a having a chevron rib.
Or a pull-down plate 2 having a protrusion as shown in FIG.
4b can also be used. In any case, if the pull-down plate has a protrusion, the protrusion is the cable head 51.
It is possible to get a frictional force by being caught by the band position display projection 54 or the like of the body. Therefore, when pulling out the cable head, the pulling-out jig 20 does not slide down from the cable head 51.

In the pull-out jig 20 thus formed, as shown in FIG. 10, after loosening and pulling down the upper tightening band 55 of the cable head 51, the band position indicating projection 54 at the tightening position is provided. Fasten with covering. Then, the tip of the tool body, which will be described later, is engaged with the protruding pin and pushed down, and the cable head 51 fastened thereto is pulled out.
The pull-out jig 20 is removed from the body of the cable head 51 after pulling out the cable head 51.

11 to 13 show the insertion jig 1 described above.
FIG. 11 shows a tool body for operating the 0 and the pull-out jig 20, and FIG. 11 is a front view of an assembled state in which the column legs are opened 90 degrees,
12 is a plan view thereof, and FIG. 13 is a plan view of the folded state.

First, in the assembled state of FIGS. 11 and 12, the tool body 30 is composed of a front arm 31, a rear arm 32 and a support leg 33, and the front arm 31.
The vicinity of the rear end, the front end of the rear arm 32, and the one end of the support leg 33 are rotatably connected by a single support shaft 34, and the rear arm expanded to the rear end of the front arm 31. 32
A stopper 35 is provided so as to be locked at a position where it is substantially aligned with the front arm 31.

The front arm 31 is formed in a bifurcated shape, and the tip ends of the front arm 31 project from the projecting pins 14 and 23 of the jigs 10 and 20.
Is formed with a groove-shaped engaging portion 36 for engaging with.
Further, the rear arm 32 is formed into a bifurcation having a width arranged on both sides of the front arm 31, and a handle 37 for operating the tool body 30 is provided at the rear end thereof. Further, the pillar leg 33 is formed into a bifurcated width arranged inside the front arm 31, and the other end not attached to the support shaft 34 is connected and reinforced.

Then, the rear arm 32 and the front arm 31
The lengths of the support leg 33 and the support leg 33 from the support shaft 34 are sequentially shortened. As shown in FIG. 13, the front arm 31 is located inside the forearm of the rear arm 32 and the front arm 31 is located inside the fork of the front arm 31. The column legs 33 are housed respectively, and can be folded and transported in this state when not in use.

When the cable head 51 is inserted using the tool body 30, the support leg 33 is opened about 90 degrees from the folded state shown in FIG. 13 to stand on the ground or the like, and the rear arm 32 is set to about 180. Assemble the tool body 30 by opening it once and bringing it into contact with the stopper 35.
The handle 37 side is pushed down with the support shaft 34 of the as a fulcrum, the engaging portion 36 side is pushed up by the lever action, and the insertion jig 10 is pushed up through the protruding pin 14 engaged therewith, so that the cable head 51 is attached. You can do this.

Further, when pulling out the cable head 51, from the folded state of FIG. 13, only the front arm 31 is opened about 180 degrees and the stopper 35 provided near the rear end.
Is assembled to the rear arm 32 to assemble the tool main body 30, and the rear arm 32 is used with the frame of the power distribution tower as a fulcrum.
Side is pulled up and the engaging portion 36 side is pulled down by lever action,
The cable jig 51 may be removed by pulling down the extraction jig 20 via the protruding pin 23 engaged therewith.

Next, the procedure for inserting and withdrawing the cable head using the cable head attaching / detaching tool of the present embodiment thus formed will be described.

First, FIG. 14 shows the insertion jig 10 and the tool body 3.
It is explanatory drawing which showed the procedure of inserting the cable head 51 using 0, and is performed by the following procedures. (A) The folded rear arm 32 is expanded by about 180 degrees until it comes into contact with a stopper 35 provided near the rear end of the front arm 31 by holding the handle 37, and the front arm 31 and the rear arm 32 are substantially aligned. The pillar legs 33, which are formed into a circular shape and are folded, are spread about 90 degrees to complete the assembly (see FIG. 14A). (B) Inserting jig 1 into taper portion 52 of cable head 51
0 is set, and the assembled tool tip, that is, the engaging portion 36 of the front arm 31 is set to the protruding pin 1 of the insertion jig 10.
Hook on 4,14. From this state, the handle 37 at the rear end of the tool is gripped and pushed down in the direction of the arrow. This allows
The lever head 33 is used as a fulcrum to leverage the cable head 51.
Can be inserted. When the insertion is completed, the tool is removed, and various tightening bands of the cable head 51 are tightened to finish the work (see FIG. 14B).

Next, FIG. 15 is an explanatory view showing a procedure for pulling out the cable head 51 using the pulling jig 20 and the tool main body 30, and the procedure is as follows. (A) The folded front arm 31 is widened by about 180 degrees until a stopper 35 provided near the rear portion abuts the rear arm 32 to form the front arm 31 and the rear arm 32 in a substantially straight line. Assembly is completed (see FIG. 15A). (B) Loosen all the various tightening bands of the cable head 51 to be pulled out, and lower only the uppermost band.
Next, the extraction jig 20 is set at the position where the uppermost tightening band was located, that is, the position where the band position display protrusion is located. The engaging portion 36 at the tip of the front arm is hooked on the projecting pin 23 of the pull-out jig 20, and the handle 37 is held with the frame of the power distribution tower as a fulcrum to pull up the rear arm side. As a result, the tip of the tool that engages the extraction jig 20 is lowered by the lever action, and the cable head 51 can be extracted (see FIG. 15B).

FIGS. 16 and 17 show an embodiment of an adapter in which the extraction jig 20 is also used as an insertion jig without using the insertion jig 10. FIG. FIG. 17 is a plan view of an adapter used for fitting and inserting the cable head, and FIG. 17 is a side view thereof.

The adapter 40 is formed of an elastic material such as rubber into a ring shape, and a conical surface 41 corresponding to the taper portion 52 of the cable head 51 is formed on the inner circumference thereof.
A slit 42 for insertion into the cable 50 is provided in a part of the peripheral wall, and a flange 43 is formed on the outer periphery of the upper portion to regulate the falling off when the pulling jig 20 is fitted.

Then, the adapter 40 is fitted on the upper portion of the pulling jig 20, and the taper portion 5 of the cable head 51.
It is set to 2 and used, and by interposing this adapter 40 in the extraction jig 20, it can be used as an insertion jig for the cable head 51. Therefore, if this adapter 40 is used, it suffices if the extraction jig 20 is provided, and it is not necessary to separately prepare an insertion jig.

FIG. 18 is an explanatory view showing the procedure for inserting the cable head 51 when the rubber adapter 40 is used, and the procedure is as follows. (A) The slit 42 of the adapter 40 is opened left and right, inserted into the cable 50, lifted as it is, and set to the taper portion of the cable head 51 (see FIG. 18A). (B) The extraction jig 20 is set on the outer periphery of the adapter 40, leaving the flange 43 portion (see FIG. 18B). (C) The assembled tool tip, that is, the engaging portion 36 of the front arm 31 is hooked on the projecting pin 23 of the extraction jig 20, and the rear arm 3 is held by holding the handle 37 with the upper end of the column leg 33 as a fulcrum.
Push 2 down in the direction of the arrow. As a result, the tip end side of the tool is lifted by the lever action, and the cable head 51 can be inserted (see FIG. 18C).

As described above, according to the attachment / detachment tool of the present invention, in any case, the cover of the terminal connecting portion such as the switch for the underground power distribution line can be provided without imposing an unreasonable posture or labor on the operator. The cable head (insulating cylinder) used as the can be attached and detached efficiently, and the workability can be improved. The attachment / detachment tool of the present invention is not limited to the attachment / detachment of the cable head, but can be easily applied to the attachment / detachment of an insulating cylinder having a similar structure.

[0036]

The cable head attaching / detaching tool of the present invention is
Since it is configured as described above, the following special effects are achieved.

In the cable head attaching / detaching tool according to the first aspect of the invention, the insertion jig attached to the taper portion of the cable head, the extraction jig for tightening the body portion of the cable head, and the tips of these jigs are provided. The tool body that inserts and pulls out the cable head is engaged by the lever action that uses the center post as a fulcrum when inserting the cable head, and the lever action that uses a part of the power distribution tower as the fulcrum when pulling out. And a projecting pin is formed on both sides of the insertion jig and the withdrawing jig, and an engaging portion for engaging with the projecting pin is formed at the tip of the tool body. So, hook the protruding pin of the insertion jig inserted in the taper part of the cable head on the engaging part of the tool body tip and push down the tool body rear end with the support leg as the fulcrum.
The lever can be used to easily and easily insert the cable head. Also, by hooking the protruding pin of the extraction jig fastened to the body of the cable head to the engaging part at the tip of the tool body and pulling up the tool body rear end with the frame of the power distribution tower as a fulcrum, the lever principle The cable head can be pulled out easily and easily.

Moreover, since the work can be performed in a comfortable posture and the force required for utilizing the lever is small, the labor of the worker can be greatly reduced. Further, since the structure of the attachment / detachment tool is simple, it is lightweight, can be made at low cost, and is easy to handle.

Furthermore, since the cable jig is pulled out by pulling down the pull-out jig fastened to the body portion of the cable head with the tool body, the upper end of the cable head which cannot be obtained by the conventional means for prying and pulling out with a bar or the like is used. Even if it is a form that is stored inside the switch,
Can be pulled out.

Further, as described in claim 2, a ring-like shape is formed, a conical surface corresponding to the taper portion of the cable head is formed on the inner periphery thereof, and a cut for inserting the cable into a part of the peripheral wall. Since the insertion jig provided with the notch is used, it can be inserted into the cable through the notch and easily attached to the taper portion of the cable head, and the conical surface does not damage the cable head.

Furthermore, as described in claim 3, as a drawing jig, a pair of semi-arcuate tightening pieces along the outer circumference of the body of the cable head are hinge-joined about a spindle to tighten both. Since a pull-down plate having protrusions such as corrugated ridges and chevron-shaped ridges was attached to the inner circumference of one piece, and a snap lock was provided at the open ends of both fastening pieces, it was formed so that it could be fastened. In addition to being easily attached with one touch, the protrusion of the pull-down plate attached to the tightening piece increases the frictional force, prevents sliding down, and enables secure fastening to the body of the cable head.

Further, as described in claim 4, since the metal fitting of the snap lock is slidably provided by the adjusting screw and the tightening force of the fastening piece can be adjusted, the manufacture of the cable head which differs depending on the manufacturer. It is possible to absorb the tolerance and fasten the extraction jig without loosening.

Further, as described in claim 5, the tool main body has a forked front arm having an engaging portion for engaging the projecting pins of both jigs at the tip, and the cable head is attached and detached at the rear end. A bifurcated rear arm having a handle for operating the tool body during work is foldably connected by a central support shaft, and a rear arm that is widened at the rear end of the front arm is a front arm. With a stopper that is locked at a position in a substantially straight line, and a support shaft that connects the two arms is rotatably attached with a support leg that serves as a fulcrum when the cable head is inserted. It is convenient, the assembly is easy when inserting and pulling out the cable head, and the operation is easy.

Further, as described in claim 6, in place of the insertion jig, an adapter for inserting a cable head, which is fitted to the upper portion of the extraction jig and inserted into the taper portion of the cable head, is used. You can omit the insertion jig,
The extraction jig can also be used as an insertion jig.

Further, as described in claim 7, the adapter is formed of an elastic material such as rubber into a ring shape, and a conical surface corresponding to the taper portion of the cable head is formed on the inner periphery of the adapter to define the peripheral wall. By providing a slit for inserting into the cable in part and forming a flange on the upper outer periphery to restrict falling out when fitted to the extraction jig, the slit can be pushed out by hand and easily inserted into the cable. It can be attached to the taper part under the cable head, and the extraction jig can be attached easily and securely.

[Brief description of drawings]

FIG. 1 is a plan view of an insertion jig of the present invention.

FIG. 2 is also a side view of the insertion jig.

FIG. 3 is a front view showing a state in which the insertion jig of the present invention is attached to a taper portion of a cable head.

FIG. 4 is a plan view of the extraction jig of the present invention.

FIG. 5 is a left side view of the drawing jig.

FIG. 6 is a right side view of the drawing jig.

FIG. 7 is a cross-sectional view taken along the line AA of FIG. 4, showing the shape of the pull-down plate that is also attached to the fastening piece of the pull-out jig.

FIG. 8 is a cross-sectional view showing another example of the pull-down plate.

FIG. 9 is a cross-sectional view showing still another example of the pull-down plate.

FIG. 10 is a front view showing a state in which the extraction jig of the present invention is fastened to the body of the cable head.

FIG. 11 is a front view of the tool body showing a state in which the support leg of the present invention is opened 90 degrees.

FIG. 12 is a plan view of the tool body of the same.

FIG. 13 is a plan view showing a folded state of the tool body of the present invention.

FIG. 14 is an explanatory diagram showing a procedure for inserting a cable head using the insertion jig and the tool body of the present invention.

FIG. 15 is an explanatory view showing a procedure for pulling out a cable head, which similarly uses a pulling jig and a tool body.

FIG. 16 is a plan view of an adapter used for inserting a cable head by being fitted into the extraction jig of the present invention.

FIG. 17 is a side view of the same adapter.

FIG. 18 is an explanatory view showing a procedure for inserting the cable head when the adapter of the present invention is used.

[Explanation of sign]

 10 Insertion jig 11 Conical surface 12 Circumferential wall of insertion jig 13 Notch 14 Projection pin 20 Extraction jig 21 Tightening piece 22 Spindle 23 Protrusion pin 24 Pulling plate 25 Punch lock 26 Adjusting screw 27 Adjusting screw 28 Folding grip 30 Tool Main body 31 Front arm 32 Rear arm 33 Column leg 34 Support shaft 35 Stopper 36 Engagement portion 37 Handle 40 Adapter 41 Conical surface 42 Slit 43 Flange 50 Cable 51 Cable head 52 Taper portion 53 Switchgear bottom plate 54 For tightening band position indication Protrusion 55 Tightening band

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shoji Fujimoto 5-2-1 Ebara, Shinagawa-ku, Tokyo Inside Saneisha Co., Ltd. (72) Inventor Hitoshi Kobayashi 5-chome, Hidakacho, Hitachi, Ibaraki No. 1 Hidaka Plant, Hitachi Cable Co., Ltd. (72) Inventor Noboru Shibata 5-1-1 Hidaka Town, Hitachi City, Ibaraki Prefecture Hidaka Plant, Hitachi Cable Co., Ltd. (72) Inventor Mikio Koda Chuo-ku, Tokyo 3-3-18 Ginza Tokyo Electric Power Co., Ltd. Ginza Branch (72) Inventor Kaoru Nakajima 3-3-18 Ginza, Chuo-ku, Tokyo Tokyo Electric Power Co., Ginza Branch

Claims (7)

[Claims] 1. An insertion jig attached to a taper portion of a cable head, a drawing jig for tightening a body portion of the cable head, and tips of these jigs engaged with each other so that a central portion of the cable head is inserted when the cable head is inserted. A tool for attaching and detaching a cable head, which comprises a tool body for inserting and withdrawing a cable head by lever action with a support leg as a fulcrum and lever action with a part of a power distribution tower as a fulcrum at the time of extraction. A tool for attaching and detaching a cable head, characterized in that projecting pins are formed on both sides of the body of both the jig and the drawing tool, and an engaging portion that engages with the projecting pin is formed at the tip of the tool body. 2. The insertion jig has a ring shape, a conical surface corresponding to a taper portion of a cable head is formed on an inner periphery of the insertion jig, and a notch for inserting a cable is provided on a part of a peripheral wall. The cable head attachment / detachment tool according to claim 1, wherein 3. The pulling-out jig has a pair of semi-circular fastening pieces along the outer circumference of the body of the cable head, which are hinged to each other about a spindle, and a corrugated ridge is formed on the inner circumference of both fastening pieces. 2. A cable head attachment / detachment tool according to claim 1, wherein a pull-down plate having a protrusion such as a ridge or a chevron is attached, and a snap lock is provided at the open ends of both fastening pieces to enable fastening. 4. A cable head attachment / detachment tool according to claim 3, wherein said snap lock receiving metal fitting is slidably provided by an adjusting screw so that the fastening force of the fastening piece can be adjusted. 5. The tool body has a bifurcated front arm having an engaging portion for engaging the projecting pins of both jigs at the tip, and a tool body for operating the tool body at the time of attachment / detachment work of the cable head at the rear end. A bifurcated rear arm having a handle is foldably connected by a central support shaft, and the rear arm expanded at the rear end of the front arm is located at a position substantially in line with the front arm. 2. The cable head according to claim 1, further comprising: a stopper that is locked by the support shaft, and a support leg that is a fulcrum when the cable head is inserted and is rotatably attached to a support shaft that connects the two arms. Detachable tool. 6. An adapter for inserting a cable head, which is fitted into an upper portion of a pulling jig and is inserted into a taper portion of the cable head, in place of the inserting jig. Cable head attachment / detachment tool. 7. The adapter is formed of an elastic material such as rubber into a ring shape, a conical surface corresponding to the taper portion of the cable head is formed on an inner circumference thereof, and the adapter is inserted into a cable on a part of a peripheral wall. 7. The cable head attachment / detachment tool according to claim 6, wherein a slit is provided, and a flange is formed on an outer periphery of an upper portion of the flange so as to prevent the flange from coming off when the cable head is fitted to the extraction jig.