JP2001037063A - Connecting adapter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To rapidly and easily connect a connecting adapter by providing a lock fitment body mounted at an end of a connecting insulator cylinder at a one-touch fitment and detachably mounting a large-capacity conversion spacer for mounting a large-capacity high-voltage aerial cable connector at the fitment body. SOLUTION: A mounting fitment 308 is engaged with a lock fitment body 61 integrally provided with a connecting insulator cylinder 10 of the connecting adapter 1, by utilizing a threaded groove 310 formed on an inner periphery of a right side end and detachably mounting at the adapter 1. A large-capacity conversion spacer 300 is mounted at the adapter 1 for a connector for a general capacity high-voltage aerial cable, and the adapter 1 for the connector for the cable is mounted by conforming to the connector for the cable. Thus, a dummy tie cable can be rapidly and easily connected to the connector for the aerial cable.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a temporary connecting cable and a bypass cable (hereinafter simply referred to as a "temporary connecting cable") at a trunk and a branch of a connector for a high-voltage overhead cable.
And a connection adapter for connecting the.

[0002]

2. Description of the Related Art Hitherto, high-voltage overhead cables have been connected to each other via high-voltage overhead cable connectors installed on utility poles. If a fault occurs in a high-voltage overhead cable or the like, it is necessary to stop energizing this part and replace the cable.

Recently, a bypass cable has been laid in parallel with a distribution line in a section where power distribution system power outage work is required, and the main line is disconnected and construction is performed while power is supplied to consumers. Construction methods are being developed. For this reason, there is a demand for a high-voltage overhead cable connector or a connection adapter in which a high-voltage overhead cable can be easily attached and detached.

FIG. 10 shows a connector (π150-8 type connector) 100 which is an example of a connector for a high-voltage overhead cable currently used. Actually, the outside of the connection body 100 is covered with an aluminum case, but the aluminum case is omitted in FIG. 10 to make the structure of the connection body 100 easy to understand.

[0005] In this example, a connector 100 for a high-voltage overhead cable
Has an insulating cylinder 101 integrally molded using ethylene propylene rubber, semiconductive ethylene propylene rubber, or the like. That is, the insulating cylinder 101 includes an outer semiconductive layer 102, an insulating layer 103, and an inner semiconductive layer 104, and a part of the outer semiconductive layer 102 has a power detection terminal portion 105.
The detection terminal portion 105 is provided with a detection terminal cap 106 made of semiconductive ethylene propylene rubber.

[0006] The insulating cylinder 101 is composed of main trunks 101A and 101A.
B and branch portions 101C and 101D,
Inside the trunks 101A and 101B and the branch 10
1C and 101D, respectively, a connection portion (plug-in connector) 2 of the high-voltage overhead cable 210 shown in FIG.
00 in a plug-in system, in this example π
150-8 plug-in connector receptacle 1
10 (110A, 110B, 110C, 110D) are incorporated. Plug-in connector / Resep 110
Are integrally made of a copper alloy material having excellent electric conductivity.

FIG. 11 shows a high-voltage cable 210 connected to the high-voltage overhead cable connector 100 having the above configuration.
1 shows an example of a connection terminal 200 used by being attached to a terminal unit of the present invention.

According to this embodiment, the connection terminals 200 are connected to the trunks 101A, 101B of the high-voltage overhead cable connection body 100.
And a plug-in connector (plug) 201 made of copper and a copper alloy rod, and an ethylene propylene rubber and a semiconductive ethylene propylene rubber. And a waterproof cylinder 203 formed using semiconductive ethylene propylene rubber.
And The high-voltage cable 210 inserted into the connection terminal 200 has the conductor 211 at the end thereof inserted into the center hole 201 </ b> A of the plug 201 and compression-connected.

The high-voltage overhead cable connector 10 having the above-described structure.
0 and the high-voltage overhead cable 210
The connection part (plug-in connector) 200 of the high-voltage overhead cable 210 can be connected to the high-voltage overhead cable connector 100 by a plug-in method, and the attachment and detachment thereof is easy. An operation for connecting the connection terminal 200 to the terminal unit is required. This connection work is complicated, requires a lot of time and a large number of people, and takes time for the recovery work.

Therefore, the present inventors have made it possible to perform uninterrupted work by temporarily connecting a temporary communication cable to the high-voltage overhead cable connecting body 100 via an appropriate connection adapter. Considering that quick recovery is possible, we proposed a connection adapter in Japanese Patent Application No. 10-128181. FIG. 12 shows an example of this connection adapter. In this example, the connection adapter 1A is a trunk line 101A, a high-voltage overhead cable connection body (general capacity) 100 shown in FIG.
01B and one branch portion (150-shaped portion) 101C, and the temporary communication cable 50 (FIG. 13) is connected.

A temporary communication cable 50 shown in FIG. 13 has a cable 51 made of, for example, a 6600 V heat-resistant cross-linked polyethylene insulated polychloroprene rubber sheath cable, and cable terminals 52 provided on both sides of the cable. The cable terminal 52 is made of a conductor connector 53 made of copper or copper alloy.
Is compression-connected to the distal end conductor of the cable 51, and a conical insulating portion 54 made of ethylene propylene rubber is integrally molded therearound.

As shown in FIG. 12, a male connection fitting 57 made of an aluminum alloy and having a cylindrical body 55 and a flange 56 is provided on the outer periphery of the large diameter portion of the cable terminal insulating portion 54 of the temporary connection cable 50. Mounted concentrically. An annular groove 58 whose both side walls are inclined is formed on the outer periphery of the body of the male connection fitting 57.

The connection adapter 1A has a conductor made of, for example, a copper or copper alloy rod, that is, a copper conductor 2 at the center. An arc extinguisher 3 having a truncated cone shape is screwed to the tip of the copper conductor 2, that is, the connection end with the high-voltage overhead cable connector 100 at the left end in FIG. The center hole 4 having a predetermined length along the center axis is provided at the other end of the cable 2, that is, at the end on the right side of FIG.
Are formed, and a temporary connection cable 5
A multi-ram band (contact) 5 for securing electrical continuity with the 0 conductor connector 53 is attached.

An annular flange 6 is formed on the outer periphery of the copper conductor 2 adjacent to the tip of the arc extinguisher 3. One end 7 a of a cylindrical outer guide 7 is fixed to the flange 6. You. The other end 7 b of the outer guide 7 is an annular stopper slightly extending inward in the radial direction, and an annular gap is formed between the outer guide 7 and the copper conductor 2. A cylindrical inner guide 8 is slidably disposed with respect to the copper conductor 2 so as to be inserted into an annular gap formed between the annular stopper 7b and the copper conductor 2. End 8a of the inner guide 8 located in the outer guide 7
Is an annular piece that extends radially outward. A compression spring 9 is arranged between the annular piece 8a and the annular flange 6 of the copper conductor 2. Therefore, the inner guide 8 is moved by the spring 9 in FIG.
2, it is urged to the left, that is, toward the arc extinguisher 3 at the tip of the copper conductor 2. At this time, when the annular piece 8a of the inner guide 8 hits the annular stopper 7b of the outer guide 7,
Further movement is blocked. These guide members, which are the inner guide 8 and the outer guide 7, are made of an insulating material such as polyacetal resin and cooperate to protect the distal end region of the copper conductor 2 electrically conducting with the high-voltage overhead cable connector 100. are doing.

The remaining outer region of the copper conductor 2 is covered with a connection insulating tube 10 integrally formed with a mold. The connection insulating cylinder 10 has an insulating layer 11 integrally formed of an insulating material such as ethylene propylene rubber, and a semiconductive layer 12 integrally formed of semiconductive ethylene propylene rubber. This semi-connected conductive layer 12 is provided outside the insulating cylinder 10.
It is provided over a predetermined area on the side opposite to the side on which the outer guide 7 is arranged.

The connection insulating tube 10 further extends beyond the end of the copper conductor 2, and its inner peripheral portion 13 is formed by expanding outward in a trumpet shape. The shape and dimensions are such that the terminal insulating portion 54 can be received. The outside of the connection insulating tube 10 has a substantially cylindrical shape, and can be fitted and mounted on the trunk portions 101A and 101B of the high-voltage overhead cable connector 100 and the inner peripheral portion of one of the branch portions (150-shaped portion) 101C. Shaped. At the right end of the connection insulating tube 10 in FIG. 12, a mounting bracket 15 having a thread groove formed on the outer periphery thereof is formed integrally with the end flange 12a of the semiconductive layer 12 so as to abut. . A cylindrical fixing member 16 is screwed to the mounting member 15 and attached. This fixing bracket 1
The axial length of 6 is a length that covers the entire end of the connection insulating cylinder 10.

At the right end of the adapter 1A in FIG. 12, that is, at the connection end side of the temporary communication cable 50, the cable end 5 of the temporary communication cable 50 is
One-touch fitting 2 for easy connection and separation with 2
0 is placed.

The one-touch fitting 20 has a female connection fitting 21 having a cylindrical shape, and a metal lock ring 22 which can slide on the outer peripheral surface of the fitting 21 in the axial direction. The female connection fitting 21 is screwed and attached to the fixing fitting 16, and is fixed by a set screw 23 screwed into a radial screw hole formed at an inner end of the female connection fitting 21.
Fixed to

An annular space portion 24 is formed by a small-diameter portion 21a formed on the outer periphery of the female connection fitting 21 and a large-diameter portion 22a formed on the inner periphery of the lock ring 22. A compression spring 25 is arranged. Therefore, the lock ring 22 is moved outward by the compression spring 25, that is,
It is biased to the right in FIG.

An outer end tapered surface 22c is formed on the inner periphery (small diameter portion) 22b of the outer end of the lock ring 22. On the other hand, a regulating member 21c such as an O-ring is arranged on the outer periphery (small-diameter portion) 21b of the outer end portion of the female connection fitting 21, so that the lock ring 22 is prevented from moving outward by the spring 25. ing.

Further, a dish-shaped through-hole 26 whose diameter is reduced inward in the radial direction at predetermined intervals in the circumferential direction is formed at an end of the female connection fitting 21. 27 are arranged. The outer peripheral surface of the ball 27 is the lock ring 2.
2 is pressed inward in the radial direction by the inner periphery (small diameter portion) 22b of the outer end portion, and a part of the through-hole 26 protrudes further inward from the inner peripheral surface of the female connection fitting 21. Locked to.

When connecting the connection adapter 1A having the above structure to the high-voltage overhead cable connection body 100, the connection adapter 1A first fits the connection insulating cylinder 10 to the main line 101A of the high-voltage overhead cable connection body 100. , In the axial direction. As a result, first, the arc extinguisher 3 provided at the distal end of the copper conductor 2 abuts against the plug-in connector receptacle 110A of the trunk section 101A, and is further pushed into the plug-in connector receptacle 110A. Further, by pushing the connection adapter 1A in the axial direction, the inner guide 8 is connected to the plug-in connector
The inner guide 8 moves into the outer guide 7 against the urging force of the spring 9 by abutting on the leading end of 0A and further pushing the connection adapter in the axial direction. As a result, the distal end region of the copper conductor 2 becomes the plug-in connector
It is pushed into OA and plugged in. FIG. 14 shows the connection state at this time.

The adapter 1A thus connected to the high-voltage overhead cable connector 100 is connected to the high-voltage overhead cable connector 100 or to the high-voltage overhead cable connector 100 by means of a two-piece retaining member 30 which is assembled into a stepped cylindrical shape. It is attached to the frame. That is, as shown in FIGS. 12 and 14, the right opening 31 of the retaining metal fitting 30 is adapted to the outer periphery of the fixing metal fitting 16, and the left opening 32 is adapted to the high-voltage overhead cable connector 100 or its mount. Then, it is fixed to the high-voltage overhead cable connector 100 or its mount using the attachment lugs 33 of the retaining fitting 30. Thereby, the adapter 1A is connected to the high-voltage overhead cable connector 1
Prevents disconnection when connected to 00.

On the other hand, when the adapter 1A is pulled out from the high-voltage overhead cable connecting member 100, the operation reverse to the above-mentioned operation procedure may be performed.

Next, referring to FIG.
A method for connecting the temporary communication cable 50 to A will be described.

First, the lock ring 22 of the one-touch fitting 20 is moved inward in the axial direction along the female connection fitting 21 (FIG. 1).
2, the spring 25 contracts, and the lock ring 22 moves along the female connection fitting 21.

Thus, the inner peripheral portion 2 of the lock ring 22
The ball 27 arranged on the female connection fitting 21 locked in 2b is released from the pressing of the lock ring 22,
It can move freely in the radial direction.

Here, when the cable terminal 52 of the temporary communication cable 50 is inserted into the terminal recess 40 of the adapter 1A, the conductor connector 53 is connected to the multi-ram band (contact) 5 arranged in the center hole 4 of the connection adapter 1A. Plug-in connection. At this time, the outer peripheral portion of the terminal insulating portion 54 is
0 fits the inner peripheral surface 13 of the end portion which is expanded like a trumpet.

Further, as described above, the ball 27 disposed on the female connection fitting 21 is released from the pressing (locked state) of the lock ring 22 and can move freely in the radial direction. When the cable terminal 52 is inserted into the terminal recess 40 of the adapter 1A, the side connection fitting 57 can be inserted by fitting to the inner peripheral wall of the female connection fitting 21.

When the cable terminal 52 is suitably inserted into the connection adapter 1A and the plug-in connection is completed, the force for pushing the lock ring 22 of the one-touch fitting 20 in the axial direction along the female connection fitting 21 is relaxed. Until the lock ring 22 is blocked by the O-ring 22.
It is pushed out by the force of. Thus, when the annular groove 58 formed on the outer periphery of the body of the male connection fitting 57 comes to the position of the ball 27, the ball 27 is pushed into the groove 58, and the ball 27 is locked by the lock ring 22. , Ie, in a state of being fitted into the groove 58 of the male connection fitting 57. This prevents the cable terminal 52 from accidentally falling out of the adapter 1A.

On the other hand, when pulling out the cable terminal section 52 from the connection adapter 1A, the operation reverse to the above-mentioned operation procedure may be performed.

[0032]

SUMMARY OF THE INVENTION Such a connection adapter 1
A can connect the temporary connection cable 50 and the high-voltage overhead cable connecting body 100 very quickly and easily, so that during restoration work on the connection high-voltage overhead cable line, there is no power failure, and furthermore, It has the feature that restoration work can be easily performed without requiring much time and personnel.

However, the high-voltage overhead cable connector 10
15 includes a general-capacity high-voltage overhead cable connection 100A (FIG. 15) and a large-capacity high-voltage overhead cable connection 100B (FIG. 16), as shown in FIGS. The body 100A has a large capacity while the receiving hole into which the connection insulating tube 10 of the connection adapter 1A is inserted and fitted has a two-stage structure of a small diameter portion (diameter A1) and a large diameter portion (diameter A2). High voltage overhead cable connector 100B
Has a large diameter portion (diameter B (>A2> A1)).

Accordingly, it is necessary to prepare two types of connection adapters 1A having correspondingly different dimensions and shapes of the connection insulating tube 10. As described above, the general-capacity high-voltage overhead cable connector 100A and the large-capacity high-voltage overhead cable connector 1
Preparing 00B is problematic in terms of cost,
In addition, a large space is required for maintenance and storage of each of these elements, and there is a problem.

Therefore, an object of the present invention is to make it possible to quickly and easily connect the temporary connecting cable and the connecting member for the high-voltage overhead cable, and to perform uninterrupted power supply during restoration work on the high-voltage overhead cable line. Moreover, it does not require much time and manpower, enables easy restoration work, reduces costs, and is easy to maintain and store.
An object of the present invention is to provide a connection adapter for connecting a temporary communication cable to a high-voltage overhead cable connection body.

[0036]

The above object is achieved by a connection adapter according to the present invention. In summary, the present invention provides:
A conductor arranged to extend in the axial direction, a connection insulating cylinder extending integrally in an axial direction beyond one end of the conductor, and a temporary communication cable are detachably attached. A one-touch fitting provided on the connection end side of the temporary communication cable for attachment, and a connection adapter for connecting the temporary connection cable and the high-voltage overhead cable connection body, wherein the one-touch fitting is the one-touch fitting, A lock fitting main body attached to the end of the connection insulating cylinder is provided, and a large-capacity conversion spacer for attaching to the large-capacity high-voltage overhead cable connection body can be detachably attached to the lock fitting main body. It is a connection adapter.

According to one embodiment of the present invention, the large-capacity conversion spacer has a spacer main body and a mounting portion, and the spacer main body has a substantially cylindrical shape, and has a shape and dimensions suitable for the connection insulating cylinder. And an outer peripheral portion having a shape and size compatible with the large-capacity high-voltage overhead cable connection body, wherein the attaching portion is rotatably attached to one end of the spacer body. A mounting bracket having a cylindrical shape is provided, and the mounting bracket is mounted on the lock bracket main body by using a screw groove formed on an inner peripheral surface of an end of the mounting bracket.

According to another embodiment of the present invention, the lock fitting body includes an inner peripheral sleeve and an outer peripheral sleeve,
A first position in which the one-touch fitting is further fitted to and attached to the outer periphery of the outer peripheral sleeve of the lock fitting main body, and a temporary connection cable can be attached to and detached from a connection adapter;
A lock ring that is slidable in the axial direction between a second position where the temporary communication cable cannot be attached to and detached from the connection adapter, and a lock ring that is pierced in a radial direction at both end outer peripheral portions of the outer peripheral sleeve. A first and a second ball which are disposed in an annular gap formed between the inner peripheral sleeve and the outer peripheral sleeve, and which are slidable in the axial direction, and a ball which is movable in a radial direction by a through hole. 2 slide fittings, the first and second
The slide fitting is urged so that the ball can be moved radially outward to the lock position by the first and second slide fittings, and the lock position is set by any one of the first and second slide fittings. And a first and a second spring for holding the lock ring in the first or second position by the ball moved to the second position.

According to still another embodiment of the present invention, furthermore, the lock ring main body can be mounted in the annular gap portion, and when mounted on the lock metal body, the lock ring is moved to the first position. A lock fitting is provided that enables the lock ring to move to the second position by removing the lock ring from the lock fitting main body and disables movement to the first position.

According to still another embodiment of the present invention, the lock ring is formed with an outwardly tapered surface on the inner periphery of both ends, and the tapered surface of the lock ring contacts a ball moved to the lock position. The contact prevents the lock ring from moving.

According to still another embodiment of the present invention, an arc extinguisher is arranged at an end of the conductor on the connection side with the high-voltage overhead cable connector, and is detachable from the conductor connector of the temporary communication cable. In order to connect freely, a contact is arranged at the end of the conductor on the connection side with the temporary communication cable, and the arc extinguisher connected to the high-voltage overhead cable connecting body and adjacent to the arc extinguisher A guide member is provided so as to be movable in the axial direction surrounding the conductor distal end region, and the connection insulating cylinder covers the conductor not surrounded by the guide member.

According to yet another embodiment of the present invention, the guide member includes an outer guide having one end fixed to the conductor, an inner guide slidably disposed with respect to the outer guide, and an inner guide. A spring for biasing the guide so as to cover the arc extinguisher and a conductor tip region adjacent to the arc extinguisher.

According to still another embodiment of the present invention, an inner peripheral portion of the connection insulating cylinder protruding from an end of the conductor is formed so as to be outwardly expanded in a trumpet shape, and is provided with a temporary connection cable. It is shaped and received to receive the cable terminal insulation.

[0044]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a connection adapter according to the present invention will be described in more detail with reference to the drawings.

FIGS. 1 and 2 show a connection adapter 1 according to the present invention.
An example will be described. FIG. 1 shows a connection adapter 1 of this embodiment.
The overall configuration is the same as that of the connection adapter 1A described above with reference to FIGS. Therefore, members having the same configuration and function are denoted by the same reference numerals, and detailed description is omitted. However, the connection adapter 1 of the present embodiment differs from the previous connection adapter 1A in that the connection adapter 1A has the one-touch fitting 20 but has a one-touch fitting 60 with a lock mechanism. 6
The configuration and operation of 0 will be described later.

FIG. 1 shows a connection adapter 1 for the general-capacity high-voltage overhead cable connector 100A shown in FIG. That is, the connection insulating tube 10 of the connection adapter 1 has a small-diameter portion (diameter A1 and length L1) and a large-diameter portion (diameter A2) so as to be fitted and fitted into the receiving hole of the general-capacity high-voltage overhead cable connection body 100A. , Length L2).

According to the present invention, as shown in FIG. 2, the large-capacity conversion spacer 300 is mounted on the connection adapter 1 for the general-capacity high-voltage overhead cable connector 100A. The large-capacity conversion spacer 300 has a spacer main body 301 and a mounting portion 302.

Referring also to FIG.
Has a small cylindrical portion (diameter A1, length L1) and a large diameter portion (diameter A) of the connection insulating cylinder 10 of the connection adapter 1.
2, the length L2), the inner peripheral portion has a two-stage structure of a small diameter portion (inner diameter A1, length L1) 303 and a large diameter portion (inner diameter A2, length L2) 304. Further, the outer peripheral portion of the spacer body 301 extends over the length L3,
The outer diameters of the third and large diameter portions 304 are both B. 2 and 3, the spacer body 301 has a mounting boss 305 having an outer diameter of C (> B). Annular steps 306 and 307 having a diameter D (<C) are formed on both sides of the mounting boss 305 in the axial direction.

The mounting portion 302 has a mounting bracket 308 at an outer peripheral portion of the mounting boss 305. Mounting bracket 30
8 has a substantially cylindrical shape, and has an annular projection 309 protruding inward adjacent to the right end in FIGS. 2 and 3. The annular projection 309 is rotatably fitted to an annular step 306 formed on the right side of the mounting boss 305.
In addition, screw grooves 3 are formed on the inner peripheral surfaces of both ends of the mounting bracket 308 in the axial direction.
10, 311 are formed. The screw groove 3 formed at one end of the mounting bracket 308, that is, at the left end in FIGS.
11 is screwed into a thread formed on the outer periphery of a stop ring 312 rotatably fitted to the annular step portion 307. Therefore, the mounting bracket 308 is rotatably mounted on the mounting boss 305 by the annular projection 309 fitted to the annular step 306 and the retaining ring 312.

Further, as shown in FIG.
Using a thread groove 310 formed on the inner peripheral surface on the right end in FIG. 2, a screw fitting is formed on a lock fitting body 61 provided integrally with the connection insulating cylinder 10 of the adapter 1, which will be described in detail later. And are removably attached to the adapter 1.

Therefore, according to the present invention, the large-capacity conversion spacer 300 is connected to the general-capacity high-voltage overhead cable connector 100.
A, the connection adapter 1 for the general-capacity high-voltage overhead cable connector 100A is attached to the large-capacity high-voltage overhead cable connector 100A.
B can be fitted. The mode at that time is shown in FIG.

As described above, according to the present invention, even when the connection adapter 1 for the general-capacity high-voltage overhead cable connecting body 100A is used, the large-capacity conversion spacer 300 is simply prepared to provide a large-capacity conversion spacer. The high-voltage overhead cable connector 100B can be mounted on the connector 100B, and there is no need to prepare the general-capacity high-voltage overhead cable connector 100A.

Next, the connection adapter 1 having a lock mechanism used in this embodiment will be described.

In this embodiment, the temporary connection cable 50 is
As shown in FIG. 3, the cable 51 includes a cable 51 made of, for example, a 6600 V heat-resistant cross-linked polyethylene insulated polychloroprene rubber sheath cable, and cable terminals 52 provided on both sides of the cable. The cable terminal 52 is configured such that a conductor connector 53 made of copper or a copper alloy is compression-connected to a tip conductor of the cable 51 and a conical insulating portion 54 made of ethylene propylene rubber is integrally molded therearound. .

As shown in FIG. 6 (or FIG. 12), the temporary connecting cable 50 is made of an aluminum alloy having a cylindrical body 55 and a flange 56 on the outer periphery of the large-diameter portion of the cable terminal insulating portion 54. A male connection fitting 57 is mounted concentrically, and an annular groove 58 whose both side walls are inclined is formed on the outer periphery of the body of the male connection fitting 57.

Next, the structure of the one-touch fitting 60 with the lock mechanism of the connection adapter 1 of this embodiment will be described with reference to FIG.

According to the present invention, the connection insulating tube 10 covering the outer region of the copper conductor 2 has a right end in FIG. And a one-touch fitting 60 with a lock mechanism for preventing an operator from performing a detaching operation on a live line by mistake.
Is provided.

According to the present embodiment, the one-touch fitting 60 with the lock mechanism is provided at the end of the connection insulating cylinder 10, namely, at the end of FIG.
, A lock fitting main body 61 is disposed at the right end. In this embodiment, the lock fitting main body 61 is formed of an inner peripheral sleeve 62 and an outer peripheral sleeve 63, and the inner peripheral sleeve 62 and the outer peripheral sleeve 63 are located outward from a substantially central portion of the inner peripheral sleeve 62 in the axial direction. Are joined together at an annular connecting portion 64 formed so as to protrude to the side, and are integrally formed with a fixing screw 65. Therefore, the inner peripheral sleeve 62 and the outer peripheral sleeve 6
3 form annular gaps G1 and G2 divided in the axial direction back and forth by the annular connecting portion 64 therebetween. Of course,
The lock fitting main body 61 can also be formed as an integral part including the inner peripheral sleeve 62 and the outer peripheral sleeve 63. The inner peripheral sleeve 62 has a thread groove 6 on its inner periphery.
2a is formed.

On the other hand, at the right end of the connection insulating tube 10 in FIG. 5, an attachment metal 15 is provided in contact with the end of the semiconductive layer 12 and a fixing metal having a thread formed on the outer periphery. 16
Are integrally formed. A screw groove 62a of the inner peripheral sleeve 62 is screwed into a screw portion on the outer periphery of the fixing bracket 16, whereby the lock fitting main body 61 is attached to the end of the connection insulating cylinder 10. The length of the fixing bracket 16 in the axial direction is a length covering the entire end of the connection insulating cylinder 10.

A plurality of holes 66 and 67 are formed at both ends of the cylindrical outer peripheral sleeve 63 at regular intervals in the circumferential direction. The holes 66 and 67 are dish-shaped through holes whose diameters are reduced inward in the radial direction.
69 are arranged respectively. The diameter of the balls 68, 69 is
The diameters of the countersunk holes 66 and 67 are smaller than the maximum diameter and larger than the minimum diameter.

Further, first and second slide fittings 71 and 72 are provided in the annular gaps G1 and G2 of the lock fitting main body 61 so as to be slidable in the axial direction, respectively. The first slide metal member 71 arranged in the gap G1 is urged rightward in FIG. 5 by a first spring 73 arranged between the first slide metal member 71 and the annular connecting portion 64. . The tip of the first slide member 71 on the side opposite to the side on which the spring 73 abuts is an inclined surface that expands outward, and the outer peripheral corner is formed on the inner peripheral surface of the end of the outer peripheral sleeve 63. The first slide fitting 7 is engaged with the step 63a.
The protrusion 1 is prevented from coming off the gap G1 outward.

Further, in FIG. 5, the second slide fitting 72 disposed in the gap G2 is moved by the second spring 74 disposed between the second slide fitting 72 and the annular connecting portion 64 as shown in FIG. To the left. As will be described later in detail, the end of the second slide fitting 72 opposite to the side with which the spring 74 abuts contacts the lock fitting 90 provided in the gap G2, and the second slide fitting 7.
2 is prevented from coming off from the gap G2. When the lock member 90 is removed from the adapter 1, the end of the second slide member 72 on the side opposite to the side where the spring 74 abuts is formed on the inner peripheral surface of the end of the outer peripheral sleeve 63. Engagement with the step 63b prevents the second slide fitting 72 from projecting outward from the gap G2 and coming off.

The one-touch fitting 60 with the lock mechanism has a substantially cylindrical metal lock ring 75 that can slide in the axial direction on the outer peripheral surface of the outer peripheral sleeve 63. The both ends of the lock ring 75 are tapered surfaces 75a and 75b whose inner peripheral surface ends are open to the outside, and one of the tapered surfaces is formed at both ends of the outer peripheral sleeve 63, as described in detail below. The holes 66 and 67 can be engaged with the ball moved upward in the radial direction, that is, the locked position. That is, the lock ring 75 is
6 between a first position (position in FIG. 6) at which the temporary communication cable 50 cannot be attached to and detached from the connection adapter 1 (a position in FIG. 7). ,
It is slidable in the axial direction.

Next, a method of connecting the temporary communication cable 50 to the connection adapter 1 will be described with reference to FIGS.

Normally, before the connection adapter 1 is connected to the high-voltage overhead cable connector 100, the lock fitting 90 is mounted on the one-touch fitting 60 with a lock mechanism, as shown in FIG. The lock fitting 90 is, for example, shown in FIG.
As shown in FIG. 7, a substantially cylindrical sleeve 91 is formed, and an annular groove 92 is formed on the outer periphery of one end.

That is, in FIG. 5, the lock fitting 90 is mounted from the left side of the connection adapter 1 into the gap G2 of the lock fitting main body 61, and the ball 69 falls into the annular groove 92 of the lock fitting 90. The lock fitting 90 is in a locked state on the spot. At this time, the second slide fitting 72 is pressed to the right in FIG. 5 by the lock fitting 90 against the spring force of the second spring 74.

On the other hand, when the ball 69 falls into the annular groove 92 of the lock fitting 90, the lock ring 75
In FIG. 5, the left end inclined surface 75b does not come into contact with the ball 69, and can freely move to the left in the axial direction. If desired, a stopper (not shown) can be provided on the lock fitting 90 to restrict the movement of the lock ring 75 to the left.

In this state, the first slide member 71 is pressed to the right in FIG. 5 by the first spring 73, so that the ball 68 disposed in the hole 66 of the outer peripheral sleeve is moved to the first position. It is engaged with the slide fitting 71 and moved to the lock position radially outward, and is held there. Accordingly, the tapered surface 75a of the lock ring 75, which is open at the right end in FIG. 5, engages with the ball 68, and the lock ring 75 is prevented from moving to the right in FIG.

The connection work of the temporary communication cable 50 is performed on the connection adapter 1 maintained in such a state. First, as shown in FIG. 6, the cable terminal 52 of the temporary communication cable 50 is inserted into the terminal recess 40 of the adapter 1.

Further, when the cable terminal 52 is pushed into the terminal recess 40 of the adapter 1, the inclined surface 55 a of the cylindrical body 55 of the male connection fitting 57 comes into contact with the inclined surface 71 a of the first slide fitting 71, The one slide fitting 71 is moved to the left in FIG. 5 against the spring force of the first spring 73.

The ball 68, which has been moved to the lock position by the first slide fitting 71 to prevent the lock ring 75 from moving rightward in FIG. 5, as shown in FIG. Moves to the left, and moves inward in the radial direction through the hole 66, as shown in FIG.
It falls into the annular groove 58 of the cylindrical body 55. At the same time, the conductor connector 53 of the cable terminal 52 is plugged-in by a multi-ram band (contact) 5 arranged in the center hole 4 of the connection adapter 1. At this time, the outer peripheral portion of the terminal insulating portion 54 is the inner peripheral surface 1 of the end portion of the insulating tube 10 which is expanded in a trumpet shape.
Complies with 3.

Here, as shown in FIG. 7, the lock ring 75 is moved rightward from the first position shown in FIG. 6 to the second position. Accordingly, the movement of the ball 69 disposed on the left end of the outer peripheral sleeve 63 in the radially outward direction by being in contact with the inner peripheral surface of the lock ring 75 is released, and the ball 69 moves through the hole 67. Radially outward, that is,
It can be moved to the lock position. Therefore, the lock fitting 90 can be pulled out to the left in FIG.

By pulling out the lock member 90, the second slide member 72 is urged by the second spring 74 and moves to the left in FIG. 63b and held in place. Therefore, the ball 69 is held at the lock position protruding radially outward by the hole 67 by the second slide fitting 72, and engages with the end inclined surface 75 b of the lock ring 75. Therefore, the lock ring 75 cannot be moved to the left in FIG. On the other hand, of the lock ring 75,
In FIG. 7, the right end is a flange 56 of the cable terminal 52.
, And the lock ring 75 is also prevented from moving rightward in FIG. That is, the temporary connection cable 5
The zero cable terminal 52 is completely connected to the adapter 1 and the cable terminal 52 cannot be attached to or detached from the adapter 1.

Accordingly, the cable terminal 52 is
6 cannot be separated unless the lock fitting 90 is attached to the lock fitting main body 61 as shown in FIG. 6 and the second slide fitting 72 is moved to the right in FIG. As described above, according to the present invention, the cable terminal 52 once attached to the adapter 1 is prevented from being accidentally removed from the adapter 1.

In the above manner, when the cable terminal 52 is inserted into the connection adapter 1 and plug-in connection is completed,
A large-capacity conversion spacer 3 is attached to a threaded portion 62b formed on the outer peripheral surface of the end of the inner peripheral sleeve 62 of the lock fitting main body 61.
The large-capacity conversion spacer 300 is mounted by screwing the end screw grooves 310 of the mounting bracket 308 of No. 00. Next, the connection adapter 1 is connected to the trunk line of the large-capacity high-voltage overhead cable connector 100B in the manner described above.

The adapter 1 thus connected to the large-capacity high-voltage overhead cable connector 100B is assembled into two parts, such as a stepped cylindrical fitting 30 as shown in FIG. Is used to attach to the high-voltage overhead cable connector 100B or its mount.

On the other hand, when pulling out the cable terminal section 52 from the connection adapter 1, the operation reverse to the above-mentioned operation procedure may be performed.

As the lock fitting 90 described in the above embodiment, a storage cover 93 used to store the connection adapter as shown in FIG. 9 can be used. The storage cover 92 is a tubular body having one end closed, and has a sleeve portion 94 that can be inserted into the gap of the lock fitting main body and the ball 69 at its open end, like the lock fitting 90 described above. Hole 95 is formed.

[0079]

As described above, the present invention relates to a conductor which is arranged to extend in the axial direction, and which is formed integrally with a conductor which extends beyond one end of the conductor in an axially outward direction. The high-voltage overhead cable connection body and the temporary connection cable are connected, each having a connection insulating tube provided and a one-touch fitting provided on the connection end side of the temporary connection cable for detachably attaching the temporary connection cable. The one-touch fitting has a lock fitting body attached to the end of the connection insulating cylinder, and the lock fitting body has a large-capacity conversion spacer for attaching to a large-capacity high-voltage overhead cable connection body. (1) The temporary connection cable can be quickly and easily connected to the connector for the high-voltage overhead cable, and the high-voltage overhead cable can be connected. For restoration work on railway tracks, easy restoration work is possible without interruption and without requiring much time and personnel. (2) Cost can be reduced, and maintenance and storage are easy. Such an effect can be obtained.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of an embodiment of a connection adapter according to the present invention.

FIG. 2 is an overall configuration diagram showing a mode in which a large-capacity conversion spacer is mounted on the connection adapter of the present invention.

FIG. 3 is an overall configuration diagram of a large-capacity conversion spacer configured according to the present invention.

FIG. 4 is a main part configuration diagram showing a mode in which a connection adapter equipped with a large-capacity conversion spacer of the present invention is attached to a large-capacity high-voltage overhead cable connection body.

FIG. 5 is an enlarged overall configuration diagram of the connection adapter of the present invention shown in FIG. 1;

FIG. 6 is a main part longitudinal sectional view for explaining a mode of connecting a temporary communication cable to the connection adapter of the present invention.

FIG. 7 is a vertical sectional view showing a state where a temporary communication cable is connected to the connection adapter of the present invention.

FIG. 8 is an overall configuration diagram of an embodiment of a lock fitting used for the connection adapter of the present invention.

FIG. 9 is an overall configuration diagram showing a mode in which a storage cover, which is another embodiment of the lock fitting used for the connection adapter of the present invention, is attached to the adapter.

FIG. 10 is a vertical sectional view of a main part showing an example of a connector for a general-capacity high-voltage overhead cable.

FIG. 11 is a vertical cross-sectional view of a main part showing an example of a connection terminal attached to and used at a terminal of a conventional high-voltage cable.

FIG. 12 is a longitudinal sectional view of a main part of a connection adapter according to the prior application.

FIG. 13 is an overall configuration diagram of a temporary communication cable.

14 is a fragmentary longitudinal sectional view showing a state in which the connection adapter of FIG. 12 is mounted on the high-voltage overhead cable connecting body of FIG. 10;

FIG. 15 is a vertical sectional view of a main part showing an example of a connector for a general-capacity high-voltage overhead cable.

FIG. 16 is a vertical sectional view of a main part showing an example of a connector for a large-capacity high-voltage overhead cable.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1, 1A Connection adapter 2 Conductor 3 Arc extinguisher 5 Contact (multi-ram band) 7 Outer guide 8 Inner guide 9 Spring 10 Connection insulating cylinder 50 Temporary communication cable 52 Cable terminal 54 Cable terminal insulating part 55 Cylindrical body 58 Flange 57 Male-side connection fitting 58 Annular groove 60 One-touch fitting with lock mechanism 61 Lock fitting main body 62 Inner sleeve 63 Outer sleeve 68, 69 Ball 71 First slide fixture 72 Second slide fixture 73 First spring 74 Second spring 75 Lock ring Reference Signs 90 Lock fitting 93 Storage cover 100 (100A, 100B) High-voltage overhead cable connector 101 Insulation cylinder 110 Plug-in connector / Resep

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shigeru Toyama 2-1-1, Sakae Oda, Kawasaki-ku, Kawasaki City, Kanagawa Prefecture Inside Showa Electric Wire & Cable Co., Ltd. (72) Masahiro Noguchi 2 Sakae Oda, Kawasaki-ku, Kawasaki City, Kanagawa Prefecture No. 1-1, Showa Electric Wire & Cable Co., Ltd. F term (reference) 5G375 AA02 BA26 BB46 CA02 CA18 CA19 CB05 DB16 DB35 EA17

Claims (8)

[Claims] 1. A conductor arranged to extend in an axial direction,
A connection insulating cylinder which extends beyond one end of the conductor in the axial direction and is integrally molded and provided on the connection end side of the temporary communication cable to detachably attach the temporary communication cable. A connection adapter for connecting a high-voltage overhead cable connection body and a temporary connection cable, the lock fitting body attached to an end of the connection insulating cylinder. And a large-capacity conversion spacer for attaching to the large-capacity high-voltage overhead cable connection body can be detachably attached to the lock fitting body. 2. The large-capacity conversion spacer has a spacer main body and a mounting portion, and the spacer main body has a substantially cylindrical shape and an inner peripheral portion having a shape and a size compatible with the connection insulating cylinder. And an outer peripheral portion having a shape and size compatible with the large-capacity high-voltage overhead cable connection body, and the mounting portion includes a substantially cylindrical mounting bracket rotatably mounted on one end of the spacer body. 2. The connection adapter according to claim 1, wherein the connection adapter is attached to the lock fitting main body by using a screw groove formed on an inner peripheral surface of an end of the mounting fixture. 3. The lock fitting main body includes an inner peripheral sleeve and an outer peripheral sleeve, and the one-touch fitting is further fitted to and attached to an outer periphery of the outer peripheral sleeve of the lock fitting main body, and a temporary connection cable is provided. A lock ring slidable in the axial direction between a first position at which the temporary connection cable cannot be attached to and detached from the connection adapter and a second position at which the temporary communication cable cannot be attached to and detached from the connection adapter; A ball which is movable in the radial direction by a through hole formed in the radial direction at both ends of the outer peripheral sleeve, and an annular gap formed between the inner peripheral sleeve and the outer peripheral sleeve. First and second slide fittings which are slidable in the axial direction; and urging the first and second slide fittings so that the first and second slide fittings radially outwardly move the ball. And lock And movable to a position, and, one of the first and second slide brackets by said lock said first the locking ring by moving the balls to a position or the second
3. The connection adapter according to claim 1, further comprising a first spring and a second spring for holding the position. 4. The lock fitting body can be mounted in the annular gap portion of the lock fitting main body, and when mounted on the lock fitting main body, the lock ring can be moved to the first position and removed from the lock fitting main body. The connection adapter according to claim 3, further comprising a lock fitting for moving the lock ring to the second position and disabling the lock ring to the first position. 5. The lock ring has a tapered surface that opens outwardly at the inner periphery at both ends, and the tapered surface of the lock ring comes into contact with a ball that has been moved to the lock position, so that the lock ring moves. 5. The connection adapter according to claim 3, wherein the connection adapter is blocked. 6. An arc extinguisher is disposed at an end of the conductor on a connection side with the high-voltage overhead cable connection body, and the conductor is detachably connected to a conductor connector of the temporary communication cable. A contact is arranged at an end on the connection side with the temporary communication cable, and an axis surrounding the arc extinguisher connected to the high-voltage overhead cable connector and a conductor tip region adjacent to the arc extinguisher is provided. A guide member is provided movably in the direction, and the connection insulating tube covers the conductor not surrounded by the guide member.
The connection adapter according to any one of the above items. 7. The guide member includes: an outer guide having one end fixed to the conductor; an inner guide slidably disposed with respect to the outer guide; and the arc guide and the arc extinguisher. 7. The connection adapter according to claim 6, further comprising: a spring for biasing the conductor extremity region adjacent to the arc extinguisher so as to cover the conductor extremity region. 8. An inner peripheral portion of the connection insulating cylinder protruding from an end portion of the conductor is formed so as to expand outward in a trumpet shape,
The connection adapter according to any one of claims 1 to 7, wherein the connection adapter has a shape and a size to receive a cable terminal insulating portion of the temporary communication cable.