KR20210152320A - wire-connected dead end clamp cover - Google Patents

Abstract

The present invention relates to a dead end clamp cover. According to the present invention, a clamp cover and a branch sleeve cover are integrally formed, to cover up to a connection part of a branch line with one cover, man-hours and a defect rate can be reduced compared to separately constructing each cover, and a cover connection part between the clamp cover and the branch sleeve cover is formed in a corrugated shape, so that the length and angle of the cover connection part, when an angle misalignment between the clamp cover and the branch sleeve cover occurs, can be flexibly changed to compensate for the misalignment.

Description

Wire-connected dead end clamp cover

The present invention relates to a dead-end clamp cover, and more specifically, the dead-end clamp protective cover and the branch sleeve protective cover are integrally formed to cover up to the part where the branch wire is connected, and the main wire coupling part is formed of silicone to connect the main wire. It relates to a wire connection type dead-end clamp cover that eliminates the need for sea taping and flexibly changes the angle and length according to the drooping of the branch line.

In general, as a method for supplying electricity supplied from a power plant or substation to each customer, electric poles are erected from the substation to each customer and the power cables are laid in the air by this, and the connection point of the electric wire is connected by a branch sleeve, etc. Power is supplied to each customer.

On the other hand, the above-mentioned electric wire is deflected by its own load due to the nature of being erected in the air, and a clamp (dead-end clamp) is used as a means to prevent this. The clamp is used by covering the end of the electric wire in a state where one end is connected and fixed to the suspension insulator coupled to the electric pole, and then the exposed core material of the electric wire is fixed with a fastening means such as sleeve compression.

The outer diameter of the clamp clamping the electric wire as described above is covered with a dead-end clamp cover to prevent safety accidents such as electric shock caused by rainwater.

In addition, the straight branch sleeve for branch wire strips the wire coating to connect the wire and the wire by compression. At this time, a branch sleeve cover is installed to prevent the exposed charging part from being exposed. When connecting in such a branch line, the positions of the above-described dead-end clamp cover and the branch sleeve cover are often close to each other by about 10 to 30 centimeters.

In spite of such a close location, if each cover is installed separately, the problem of opening of the branch sleeve cover due to poor taping processing, the problem of excessive man-hours, and the problem of sliding of the branch sleeve cover over time may occur.

In addition, depending on the sagging of the electric wire, the angle of the branch line outlet of the dead-end clamp cover and the angle of the branch line are often mismatched with each other. It may cause the risk of accidents, etc.

Public Utility Model No. 20-2008-0003670

An object of the present invention is to provide an integrated cover of a dead-end clamp cover and a branch sleeve cover.

Another object of the present invention is to provide a cover capable of compensating for the occurrence of an angular misalignment between the clamp cover and the branch sleeve cover.

Dead-end clamp cover according to the present invention, a clamp cover surrounding the dead-end clamp connected to the suspension insulator from the outside; a branch sleeve cover connected to the clamp cover and surrounding the branch sleeve coupled to the branch line from the outside; and a cover connection part connecting the clamp cover and the branch sleeve cover at a predetermined angle in the middle, wherein the cover connection part has a corrugated shape, and the length of the cover connection part and the angle of the cover connection part are variable. do it with

Here, the clamp cover includes a first clamp cover positioned on one side with respect to the cut line cut in the longitudinal direction of the clamp cover and a second clamp cover positioned on the other side with respect to the cut line, and the cover The connection part includes a first cover connection part connected to the first clamp cover and a second cover connection part connected to the second clamp cover, and the branch sleeve cover includes a first branch sleeve cover connected to the first cover connection part and It may include a second branch sleeve cover connected to the second cover connection part.

In addition, the clamp cover includes a main wire coupling part coupled to the main wire of the electric wire, and the main wire coupling part may be made of a silicone material, and a protrusion protruding in the shape of a sawtooth and a concave portion having a recessed shape to correspond to the shape of the protrusion Including, the protrusion and the concave portion may be engaged to be coupled to the main line.

In addition, the first clamp cover includes a first fixing part protruding to the outside of the first clamp cover, the second clamp cover further includes a second fixing part protruding to the outside of the second clamp cover, , The first fixing part may be provided with a first fixing nail protruding by a predetermined length in a vertical direction of the first fixing part, and the second fixing part has a predetermined length in the vertical direction of the second fixing part A second fixing nail protruding to the can be provided.

On the other hand, the dead-end clamp cover according to the present invention may further include a lock lever for connecting and fixing the first clamp cover and the second clamp cover in an overlapping state facing each other at the cut-off line, and the lock lever is coupled to the first fixing nail to be rotatable about the first fixing nail as an axis, and a lock hole having an open side to be coupled to the second fixing nail may be provided.

Here, in the lock lever, work holes for connecting or separating the first clamp cover and the second clamp cover may be provided at both ends of the lock lever in the longitudinal direction.

Meanwhile, the dead-end clamp cover according to the present invention may further include a locking ring for connecting and fixing the first branch sleeve cover and the second branch sleeve cover in an overlapping state.

Here, the lock ring may be provided with a working ring formed in a ring shape perpendicular to the outer circumferential surface of the lock ring to connect or separate the first branch sleeve cover and the second branch sleeve cover.

Meanwhile, the first branch sleeve cover may include a hinge to which the lock ring is coupled, and the lock ring may have a fastening groove cut in a longitudinal direction of the lock ring.

In addition, the first branch sleeve cover may include stoppers disposed on upper and lower portions of the lock ring when the first branch sleeve cover and the second branch sleeve cover are connected.

According to the present invention, since the clamp cover and the branch sleeve cover are integrally formed to cover up to the connection part of the branch line with one cover, taping of the branch line connection part is unnecessary. can be reduced

In addition, according to the present invention, since the main line coupling portion of the clamp cover is made of a silicone material, the main line can be directly connected to the clamp cover, and thus the taping operation of the portion where the main line and the clamp cover are coupled is unnecessary. It is possible to reduce the work man-hours and the defect rate.

In addition, according to the present invention, when the cover connection part between the clamp cover and the branch sleeve cover is formed in a corrugation shape, when an angle shift phenomenon occurs between the clamp cover and the branch sleeve cover, the length and angle of the cover connection part are changed to compensate for the angle shift phenomenon can do it

1 is a schematic diagram of a dead-end clamp cover according to the present invention;
Figure 2 is a schematic diagram of a dead-end clamp cover in an open state according to the present invention.
3 is an enlarged view of a main line coupling part to which a main line of an electric wire is coupled.
4 shows the structure of the lock lever.
5 and 6 show a state in which the first clamp cover and the second clamp cover are fixedly connected by a lock lever, respectively, and a state in which the first clamp cover and the second clamp cover are released from the fixed connection state and are detachable.
7 is a view showing a state in which the lock ring is connected to the branch sleeve cover.
8 is a diagram schematically illustrating a shape of a lock ring.
9 is a view showing the finished state of the work of the dead-end clamp cover of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Since the present invention can have various changes and can have various embodiments, specific embodiments are illustrated in the drawings and described in detail in the detailed description. This is not intended to limit the present invention to specific embodiments, and should be construed to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

In describing the present invention, terms such as first, second, etc. may be used to describe various components, but the components may not be limited by the terms. The above terms are only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component.

The term “and/or” may include a combination of a plurality of related listed items or any of a plurality of related listed items.

When a component is referred to as being “connected” or “connected” to another component, it may be directly connected or connected to the other component, but other components may exist in between. can be understood On the other hand, when an element is referred to as being “directly connected” or “directly connected” to another element, it may be understood that the other element does not exist in the middle.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. The singular expression may include the plural expression unless the context clearly dictates otherwise.

In the present application, terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, and one or more other features It may be understood that the existence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded in advance.

Unless defined otherwise, all terms used herein, including technical or scientific terms, may have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in a commonly used dictionary may be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in the present application, it is interpreted in an ideal or excessively formal meaning. it may not be

In addition, the following embodiments are provided to more completely explain to those with average knowledge in the art, and the shapes and sizes of elements in the drawings may be exaggerated for more clear explanation.

1 is a schematic diagram of a dead-end clamp cover according to the present invention, FIG. 2 is a schematic diagram of an open state of the dead-end clamp cover according to the present invention, and FIG.

First, referring to FIGS. 1 and 2 , the dead-end clamp cover 1000 according to an embodiment of the present invention includes a clamp cover 100 , a branch sleeve cover 200 , and a cover connection part 300 .

Here, the clamp cover 100 may have a cylindrical shape as a configuration for protecting the dead-end clamp connected to the suspension insulator from the outside of the dead-end clamp.

At this time, the clamp cover 100 is the first clamp cover 110 positioned on one side based on the cut line L1 cut in the longitudinal direction of the clamp cover 100 and the other side based on the cut line L1 . It may include a second clamp cover 120 located there. In a direction opposite to the incision line L1, there is a clamp cover coupling part P1 to which the first clamp cover 110 and the second clamp cover 120 are connected. 1 When the clamp cover 110 and the second clamp cover 120 are folded in a direction away from each other, the clamp cover 100 is opened, and when the incision lines L1 are gathered in a direction toward each other until they are overlapped to face each other, the clamp cover ( 100) will be closed.

On the other hand, in the present specification, the longitudinal direction of the clamp cover 100 should be understood as referring to the height direction of the cylinder.

In addition, the clamp cover 100 includes a main line coupling part 130 protruding in the longitudinal direction at one end of the clamp cover 100 in the longitudinal direction. Here, one side means the opposite direction to the part where the suspension insulator is connected.

In this case, the main line coupling part 130 may be made of a silicon material. The main line coupling unit 130 has an inner diameter sufficient to completely wrap the main line C1 in the closed state of the clamp cover 100 .

Referring to FIG. 3 , the main line coupling part 130 includes a protrusion protruding in a sawtooth shape and a concave portion having a recessed shape to correspond to the shape of the protrusion, and the protrusion and the concave portion are engaged to engage the main line C1. can be

As the main wire coupling part 130 is made of a silicone material and completely meshes with the main wire C1, there is an advantage in that the taping operation of the portion where the clamp cover and the main wire C1 are coupled becomes unnecessary.

The branch sleeve cover 200 is connected to the clamp cover 100 and is configured to wrap and protect the branch sleeve to which the branch line C2 is coupled from the outside of the branch sleeve.

Here, the branch sleeve cover 200 is connected while forming a predetermined angle with the clamp cover 100 according to the angle at which the branch line C2 branches off from the main wire C1. At this time, the clamp cover 100 and the branch sleeve cover ( 200 is connected through the cover connecting portion 300 connecting the clamp cover 100 and the branch sleeve at the predetermined angle in the middle.

In this case, the cover connection part 300 includes a first cover connection part 310 connected to the first clamp cover 110 and a second cover connection part 320 connected to the second clamp cover 120 .

In addition, the branch sleeve cover 200 includes a first branch sleeve cover 210 connected to the first cover connection part 310 and a second branch sleeve cover 220 connected to the second cover connection part 320 .

In addition, the branch sleeve cover 200 includes a branch line coupling part 230 protruding in the longitudinal direction at an end opposite to the end to which the cover connection part 300 is connected, that is, an end from which the branch line protrudes to the outside.

In this case, the branch line coupling part 230 may be made of a silicon material like the main wire coupling part 130 . The branch line coupling part 230 has an inner diameter sufficient to completely wrap the branch line C2 in the closed state of the branch sleeve cover 200 .

In addition, the branch line coupling part 230 includes a protrusion protruding in a sawtooth shape and a concave shape recessed to correspond to the shape of the protrusion similarly to the main line coupling part 130, and the protrusion and the concave are engaged with the branch line ( C2) can be combined.

As the branch line coupling part 230 is made of a silicone material and is fully engaged with the branch line C1, there is an advantage in that the taping operation of the portion where the branch sleeve cover 200 and the branch line C2 are coupled is also unnecessary.

The clamp cover 100 , the cover connection part 300 and the branch sleeve cover 200 operate to open and close as one body. In other words, when the clamp cover 100 opens and closes based on the clamp cover coupling portion P1 , the first clamp cover 110 , the first cover connection portion 310 and the first branch sleeve cover 210 . moves together, and opens and closes while the second clamp cover 120 , the second cover connection part 320 and the second branch sleeve cover 220 move together.

On the other hand, the cover connecting portion 300 is characterized in that it has the shape of a corrugated tube formed by crossing a convex portion and a concave portion outward in the radial direction of the cylindrical shape.

Accordingly, the length and angle of the cover connection part 300 and the cover connection part 300 are flexibly variable, and the branch sleeve cover 200 is formed with the clamp cover 100 while the length and angle of the cover connection part 300 are varied. The angle can also be flexibly changed.

That is, by the cover connection part 300 having a corrugated shape, even if the branch line C2 is drooping, the branch line C2 is moved while sagging so that the branch line C2 does not deviate from the branch sleeve cover 200, and at the same time branch As the sleeve cover 200 moves together, it is possible to compensate as much as the angle between the branch line C2 and the branch sleeve cover 200 is misaligned.

On the other hand, the dead-end clamp cover 1000 according to an embodiment of the present invention is a lock lever for fixing the first clamp cover 110 and the second clamp cover 120 to face each other at the incision line L1 and connect them in an overlapping state. (400) may be further included.

Hereinafter, how the clamp cover 100 is fixed in a closed state will be described with reference to the drawings.

4 shows the structure of the lock lever, and FIGS. 5 and 6 show the state in which the first clamp cover and the second clamp cover are released from the fixedly connected state and the fixedly connected state by the lock lever, respectively, and are detachable.

Referring to Figure 5 first, the first clamp cover 110 is formed on the outer peripheral surface of the first clamp cover 110 and includes a first fixing part 111 protruding to the outside of the first clamp cover 110, The second clamp cover 120 is formed on the outer circumferential surface of the second clamp cover 120 and may include a second fixing part 121 protruding to the outside of the second clamp cover 120 .

In addition, the first fixing part 111 includes a first fixing nail 112 protruding to a predetermined length in the vertical direction of the first fixing part 111 , and the second fixing part 121 has a second fixing part. A second fixing nail 122 protruding by a predetermined length in the vertical direction of the 121 may be included.

Here, the first fixing nail 112 and the second fixing nail 122 have a shape protruding in the same direction based on the cut line L1 of the clamp cover 100 .

Next, the structure of the lock lever 400 will be described with reference to FIG. 4 .

The lock lever 400 is provided with a lock hole 410 connected to the second fixing nail 122 and a fixing hole 430 connected to the first fixing nail 112 . In addition, work holes 420a and 420b for connecting or separating the first clamp cover 110 and the second clamp cover 120 are provided at both ends of the lock lever 400 in the longitudinal direction.

The lock lever 400 has a fixing hole 430 coupled to the first fixing nail 112 , and the locking lever 400 can rotate with the first fixing nail 112 as an axis.

One side of the lock hole 410 is open to be inserted into the second fixing nail 122 and coupled. Referring to FIGS. 5 and 6 , the fixing hole 430 is coupled to the first fixing nail 112 . When the clamp cover 100 is overlapped at the incision line L1 and the work tool is pulled into the work hole 420a close to the lock hole 410, the lock hole 410 is coupled to the second fixing nail 122 and clamps. The cover 100 is fixedly connected (locked state).

Conversely, when the clamp cover 100 is fixedly connected and the working tool is pulled into the working hole 4200b close to the fixing hole 430 , the coupling between the lock hole 410 and the second fixing nail 122 is released and the clamp cover The fixed connection of (100) is released (open state).

As described above, the dead-end clamp cover 1000 according to an embodiment of the present invention can lock or open the clamp cover 100 in a manner that inserts and pulls a work tool into the work holes 420a and 420b provided in the lock lever 400 . Therefore, there is no need for the operator to manually work, which has the advantage of enabling indirect live wire work.

Hereinafter, how the branch sleeve cover 200 is fixed in a closed state will be described with reference to the drawings.

The dead-end clamp cover 1000 according to an embodiment of the present invention further includes a locking ring 500 for connecting and fixing the first branch sleeve cover 210 and the second branch sleeve cover 220 in an overlapping state. can do.

7 is a view showing a state in which the lock ring is connected to the branch sleeve cover, and FIG. 8 is a view schematically illustrating the shape of the lock ring.

7 and 8 , the lock ring 500 has a cylindrical shape, and the lock ring 500 includes a working ring 510 formed in a ring shape in a direction perpendicular to the outer circumferential surface of the lock ring 500 , and a branch sleeve cover. A hinge connection part 530 for connecting to the 200 is provided.

In addition, the lock ring 500 has a cylindrical shape of the lock ring 500 and a fastening groove cut in the longitudinal direction is machined.

On the other hand, for the fixed coupling of the first branch sleeve cover 210 and the second branch sleeve cover 220 by the lock ring 500 , the hinge connection part ( A hinge 211 connected to the 530 is provided, and in a direction opposite to the direction in which the hinge 211 is provided, a lock ring 500 is provided when the first branch sleeve cover 210 and the second branch sleeve cover 220 are connected. Stoppers 212 are provided on the upper and lower portions of the . The stopper 212 is formed so as to protrude a predetermined length in an outward direction of the outer circumferential surface of the first branch sleeve cover 210 .

Hereinafter, an operation in which the locking ring 500 connects and locks the first branch sleeve cover 210 and the second branch sleeve cover 220 will be described.

As shown in FIG. 7 , when the working tool is pulled into the locking ring 510 in a state where the locking ring 500 is positioned, the fastening groove is opened. When the lock ring 500 is rotated to surround the first branch sleeve cover 210 with the hinge 211 as an axis while pulling the lock ring, the first branch sleeve cover 210 and the second branch sleeve cover 220 While completely surrounding the first branch sleeve cover 210 and the second branch sleeve cover 220 are fixedly coupled (locked state).

Conversely, when the locking ring is pulled in a state in which the first branch sleeve cover 210 and the second branch sleeve cover 220 are fixedly coupled, the fastening groove opens and the first branch sleeve cover 210 and the second branch sleeve cover 220 are fixed. ) can be released (open state).

As in the previous lock lever 400, the branch sleeve cover 200 can be locked or opened by inserting a work tool into the work ring 510 provided on the lock ring 500 and pulling it, so there is no need for an operator to manually work. There is no indirect live wire work.

In addition, when the lock ring 500 is fixedly coupled to the first branch sleeve cover 210 and the second branch sleeve cover 220 by the stopper 212 , the lock ring 500 may be guided not to slip.

In addition, the lock ring 500 may be provided with a lock ring fixing part 520 formed by protruding the inner peripheral surface of the lock ring 500 at a position where the lock ring 510 is provided.

In this case, a fixing groove 221 having a depth corresponding to the protruding depth of the lock ring fixing part 520 may be provided in the second branch sleeve cover 220 . The fixing groove 221 is provided at a position to face the lock ring fixing part 520 in a state in which the first branch sleeve cover 210 and the second branch sleeve cover 220 are fixedly coupled.

Accordingly, the locking ring fixing part 520 is fitted into the fixing groove 221 while fixing the first branch sleeve cover 210 and the second branch sleeve cover 220 to the first branch sleeve cover 210 and the second branch sleeve cover 210 . The two-branched sleeve cover 220 may be more firmly fixedly coupled.

9 is a view showing the finished state of the work of the dead-end clamp cover of the present invention.

9, the dead end clamp cover 1000 of the present invention, the suspension insulator 10, the dead end clamp 20, the branch sleeve 30, the main line (C1) and the branch line (C2) are coupled to work The completed image is displayed. At this time, at one side to which the suspension insulator 10 is coupled, one skirt portion of the suspension insulator 10 is coupled in a shape to be inserted into the clamp cover 100, which exposes the metal part at the portion where the suspension insulator 10 is coupled. to prevent it from happening.

In addition, on the other side to which the suspension insulator 10 is not coupled, the main wire C1 of the electric wire is directly connected to the main wire coupling part 130 made of silicon material of the clamp cover 100, and the dead-end clamp cover 1000 of the present invention. As the branch sleeve cover 200 and the clamp cover 100 are integrated, it can be protected by wrapping up to the branch sleeve 30, which is the branch line connection part, at once.

As described above, according to the present invention, since the clamp cover and the branch sleeve cover 200 are integrally formed, it is possible to cover up to the connection part of the branch line with one cover. can

In addition, according to the present invention, since the main line coupling portion of the clamp cover is made of a silicone material, the main line can be directly connected to the clamp cover, and thus, the taping operation of the portion where the main line and the clamp cover are coupled is unnecessary. It is possible to reduce the work man-hours and the defect rate.

In addition, according to the present invention, when the cover connection part between the clamp cover and the branch sleeve cover is formed in a wrinkle shape, and an angle shift between the clamp cover and the branch sleeve cover occurs, the length and angle of the cover connection part are changed to compensate for the angle shift phenomenon. can do it

Although the present invention has been described with reference to limited embodiments and drawings, the present invention is not limited to the above embodiments, and various modifications and variations are possible from these descriptions by those skilled in the art to which the present invention pertains. Accordingly, the technical spirit of the present invention should be understood only by the claims, and all equivalents or equivalent modifications thereof will fall within the scope of the technical spirit of the present invention.

1000: dead end clamp cover
100: clamp cover
110: first clamp cover
111: first fixing part
112: first fixing nail
120: second clamp cover
121: second fixing part
122: second fixing nail
P1: Clamp cover coupling part
L1: incision line
130: main line coupling part
200: branch sleeve cover
210: first branch sleeve cover
211: hinge
212: stopper
220: second branch sleeve cover
230: branch line coupling part
221: fixed groove
300: cover connection
310: first cover connection part
320: second cover connection part
400: lock lever
410: lock hole
420a, 420b: work hole
430: fixing hole
500: lock ring
510: work hook
520: fixed part
530: hinge connection
C1: Finals
C2: branch line

Claims (10)

a clamp cover that surrounds the dead-end clamp connected to the suspension insulator from the outside;
a branch sleeve cover connected to the clamp cover and surrounding the branch sleeve coupled to the branch line from the outside; and
and a cover connecting part connecting the clamp cover and the branch sleeve cover at a predetermined angle in the middle,
The cover connection part has a corrugated shape, and the length of the cover connection part and the angle of the cover connection part are variable.
According to claim 1,
The clamp cover includes a first clamp cover positioned on one side with respect to the cut line cut in the longitudinal direction of the clamp cover and a second clamp cover positioned on the other side with respect to the cut line,
The cover connection part includes a first cover connection part connected to the first clamp cover and a second cover connection part connected to the second clamp cover,
The branch sleeve cover includes a first branch sleeve cover connected to the first cover connection part and a second branch sleeve cover connected to the second cover connection part.
According to claim 1,
The clamp cover includes a main line coupling portion coupled to the main line of the electric wire,
The main line coupling part is made of a silicone material, and it includes a protrusion protruding in a sawtooth shape and a concave shape recessed to correspond to the shape of the protrusion, and the protrusion and the concave portion are engaged to engage the main line, characterized in that it is coupled with the main line. End clamp cover.
3. The method of claim 2,
The first clamp cover includes a first fixing part protruding to the outside of the first clamp cover, and the second clamp cover further includes a second fixing part projecting to the outside of the second clamp cover,
The first fixing part is provided with a first fixing nail protruding by a predetermined length in a vertical direction of the first fixing part, and the second fixing part is provided with a predetermined length in the vertical direction of the second fixing part. Dead-end clamp cover, characterized in that provided with a second fixing nail.
5. The method of claim 4,
Further comprising a lock lever for connecting the first clamp cover and the second clamp cover in an overlapping state facing each other at the cut-out line,
The lock lever is coupled to the first fixing nail and is rotatable about the first fixing nail as an axis, and the dead-end clamp cover, characterized in that it has a lock hole with one side open to engage the second fixing nail. .
6. The method of claim 5,
The lock lever is
The dead-end clamp cover, characterized in that at both ends of the lock lever in the longitudinal direction, work holes for connecting or separating the first clamp cover and the second clamp cover are provided.
3. The method of claim 2,
The dead-end clamp cover further comprising a locking ring for connecting and fixing the first branch sleeve cover and the second branch sleeve cover in an overlapping state.
8. The method of claim 7,
The lock ring is formed in an annular shape perpendicular to the outer circumferential surface of the lock ring, and a working ring for connecting or disconnecting the first branch sleeve cover and the second branch sleeve cover is provided. cover.
8. The method of claim 7,
The first branch sleeve cover includes a hinge to which the lock ring is coupled,
The lock ring is a dead-end clamp cover, characterized in that the fastening groove cut in the longitudinal direction of the lock ring is machined.
8. The method of claim 7,
The first branch sleeve cover,
The dead-end clamp cover, characterized in that when the first branch sleeve cover and the second branch sleeve cover are connected, stoppers disposed on upper and lower portions of the lock ring are provided.

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