KR20200002212A - Bypass cable link clamp for hot-line job - Google Patents

Abstract

The present invention relates to a bypass cable connecting clamp for a live-wire work, having a structure specifically capable of simply fixing a branch cable or a jumper cable to a power cable. The bypass cable connecting clamp for a live-wire work comprises: a clamp body; a clamp jaw capable of controlling intervals with a clamp arm while being changed in a sliding method in the longitudinal direction of the clamp body; and a jaw protrusion member connected to the clamp body to be parallel in the longitudinal direction of the clamp body and changing the clamp jaw in the sliding method by penetrating the clamp jaw. The clamp body has a cable insertion hole in which the cable penetrates and is inserted, at a point separated from the clamp arm. The bypass cable connecting clamp for a live-wire work can control the clamp just with a simple mechanical motion without fine adjustments to the direction of the clamp and, therefore, can easily perform work about a high-altitude electricity cable. Therefore, the bypass cable connecting clamp for a live-wire work provides safety and can perform the work without directly supporting the load of the clamp. So, the bypass cable connecting clamp for a live-wire work easily performs a bypass transformer construction method, a switch construction method for construction, a bypass cable construction method, and other live-wire works.

Description

Bypass cable link clamp for hot-line job

The present invention relates to a clamp for live work, and more particularly to a bypass connection clamp for live work having a structure capable of easily fixing a branch cable or a bypass cable to a power cable.

In the past, when performing maintenance or new construction of special high voltage lines, electric facility construction has been carried out through the blackout of power distribution lines.

However, in recent years, electric users are increasingly demanding improved reliability for stable electricity supply without interruption in order to prevent various damages or accidents caused by power failures. Therefore, in order to shorten the blackout time, electric utilities are expanding the live work to perform the work while the electricity is energized without performing a power failure when performing various electric facility construction.

In order for livelines to be safe and smooth, clamps that bind to high power cables and fork off power cables must be easy to handle. Therefore, the power cable is gripped by turning a screw-shaped member formed at a portion where the clamp grips the power cable, typically using an insulating stick.

However, the power cable gripping portion that is variable with the screw is formed by the end of the screw has a problem that it is difficult to contact a wide area covering the cable surface. In the prior art registered Utility Model Publication No. 20-0303405 shown in FIG. 1, the grip of the cable gripped between the body portion 102 and the connection terminal 106 is compressed to a narrow area of the end of the connection terminal 106. Inevitably, there is a problem in that the connection terminal 106 should be brought into close contact with the cable with excessive pressure in order to provide stable energized contact.

 In order to solve this problem, when the gripping portion is manufactured in the form of a curved surface, the entire curved surface rotates with the screw, so that the curved surface is difficult to be aligned in a direction perpendicular to the length direction of the power cable. This is because even if the screw and the gripping member are separated from each other, the direction of the gripping member may be disturbed due to the contact between the screw and the gripping member.

In particular, when work is to be carried out on cables that are not reachable even when the bucket is installed in the cargo compartment and lifts up to the highest altitude, the work process must be performed only with insulation sticks. In this case, the operator controls the clamp while looking at the air. It's very hard to do.

Therefore, since the clamp can be controlled by a simple mechanical operation without fine direction control of the clamp, work on a high-power cable can be easily performed, and thus a technique for a live-work clamp can be secured.

Utility Model Registration No. 20-0303405 (Registration Date: Jan. 24, 2003)

Accordingly, the present invention is to improve the problems of the prior art, it is possible to control the clamp by a simple mechanical operation without the fine direction control of the clamp, it is possible to easily work on high-power power cable, so that the safety It can be planned and can be carried out without directly supporting the clamp load, and the bypass connection clamp for live work can be made much easier in bypass transformer method, construction switch method, bypass cable method and other live work. To provide.

The bypass connection clamp for live work according to the present invention for achieving the above object comprises a clamp body, a clamp jaw, and a jaw adjustment member.

The clamp body consists of a clamp arm and a clamp body.

The clamp jaw is manufactured to be adjusted in a sliding manner along the longitudinal direction of the clamp body to adjust the gap with the clamp arm.

The jaw adjustment member is formed to be elongated, is coupled to the clamp body in parallel to the longitudinal direction of the clamp body, is installed through the clamp jaw to vary the clamp jaw in a sliding manner.

At this time, the clamp body is formed with a cable insertion hole through which the cable is inserted at a point spaced apart from the clamp arm.

In this case, the clamp jaw is preferably formed with a thread on the inner circumferential surface of the through hole into which the jaw adjustment member is inserted, and a thread corresponding to the thread of the inner circumferential surface of the through hole is formed on the outer circumferential surface of the jaw adjustment member, so that the jaw adjustment member is idle. The clamp jaw is variable in the longitudinal direction of the jaw adjustment member.

Here, the clamp jaw is preferably formed with a guide arm surrounding a portion of the outer circumferential surface of the clamp body, thereby preventing the clamp jaw from rotating with the jaw adjusting member when the jaw adjusting member is idle. It is variable only in the longitudinal direction.

Also, at the end of the jaw adjustment member, a stick fastening unit connecting the insulation stick and the jaw adjustment member, which is preferably provided to rotate the jaw adjustment member, is coupled.

In this case, the stick fastening unit is preferably inserted through the jaw adjustment member at one end, the insulating stick is inserted through the other end, and is provided with a separation preventing pin which is inserted through all the outer peripheral surface of the stick fastening unit to the jaw adjustment member, The stick fastening unit and the jaw adjustment member are coupled.

An opening groove is preferably formed on the outer circumferential surface of the stick fastening unit by a predetermined length from the other end edge, and the opening groove includes a vertical groove formed in the insertion direction of the insulating stick, and a horizontal groove extending perpendicularly from the end of the vertical groove. The protruding protrusion formed at the end of the insulating stick passes through the vertical groove and then inserted into the horizontal groove, thereby preventing separation of the stick fastening unit and the insulating stick.

In particular, at the end of the horizontal groove is preferably a seating hole having a diameter larger than the width of the horizontal groove is formed, the projection is inserted into the seating hole, the coupling of the insulating stick and the stick fastening unit is maintained stably.

On the other hand, the upper portion of the clamp body is preferably provided with a mounting arm that can be mounted on the power cable at one end and the other end is made of a rod member which is coupled to the upper portion of the clamp body.

Here, the mounting unit is preferably prepared to form one set of three, one mounting unit is provided for each three-phase power cable, the three mounting members constituting the set of the mounting arm is made of a different color, the rod member And the mounting arm are connected at an acute angle to each other, and the inner surface of the acute angle is formed with a non-slip portion of different sizes are formed.

The lower surface of the clamp arm is preferably formed with an upper groove that is curved upwardly, and an upper groove of the clamp jaw is formed with a lower groove corresponding to the upper groove. A portion of the bottom contact of the arm is incised to form a top projection at the center thereof, and a bottom groove into which the top projection is inserted is located at a portion of the bottom of the clamp arm that is in contact with the top surface of the clamp arm when the upper surface of the clamp jaw is close to the top surface of the clamp arm. By being formed, the kind according to the diameter of the cable which can be fixed between the upper groove and the lower groove is expanded.

The bypass connection clamp for live work according to the present invention can control the clamp by simple mechanical operation without fine control of the clamp, so that work on a high-power cable can be easily performed, and thus safety can be achieved. It is possible to perform the work without directly supporting the load of the clamp, so that the bypass transformer method, construction switch method, bypass cable method and other live work can be made much easier.

1 is a front view showing a prior art,
Figure 2 is a perspective view of the installation of the clamp according to an embodiment of the present invention,
3a is a front view of a clamp according to the invention,
Figure 3b is an enlarged view of the mounting unit in Figure 3a,
4 is an enlarged perspective view of the clamp arm and the clamp jaw in FIG. 3a, FIG.
5 is a plan view of the clamp jaw and the clamp body,
6 is an enlarged perspective view showing a further embodiment of FIG. 4;
7 is a front view and an enlarged view of the stick fastening unit,

Specific structural or functional descriptions presented in the embodiments of the present invention are only illustrated for the purpose of describing the embodiments according to the inventive concept, and the embodiments according to the inventive concept may be implemented in various forms. In addition, it should not be construed as limited to the embodiments described herein, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

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

The live connection bypass connection clamp 1 according to the present invention includes a clamp main body 10, a clamp jaw 30, and a jaw adjustment member 20 as shown in FIG. 3A.

The clamp body 10 is composed of a clamp arm 11 and the clamp body 12, the inside is made of a conductor. In particular, the clamp body 12 is formed with a cable insertion hole 131 through which the cable is inserted through a point spaced apart from the clamp arm (11).

The clamp jaw 30 is variable in a sliding manner along the longitudinal direction of the clamp body 10 and the distance from the clamp arm 11 is adjusted. At this time, a power cable (not shown) is gripped between the clamp jaw 30 and the clamp arm 11.

The jaw adjustment member 20 is a long member, which is coupled to the clamp body 10 in parallel to the longitudinal direction of the clamp body 10, is installed to penetrate the clamp jaw 30, and slides the clamp jaw 30. Variable in such a way.

Embodiments of the present invention have been described above, and in the following, the organic relationship between each component and components will be described in more detail.

The clamp body 10 more specifically consists of a clamp arm 11, a clamp body 12, and a lower arm 13 as shown in FIG. 3A. Since the clamp arm 11 is attached to a power cable (not shown), a branch cable (not shown), which will be described later, is held on the upper arm and the lower arm 13 is held, and the clamp body 12 is made up and down to clamp the clamp. The arm 11 and the lower arm 13 are connected. However, the position of the top and bottom shown in Figure 3a may vary depending on the working situation.

Since the clamp body 10 is made of a conductor, the power of the power cable (not shown) gripped between the clamp arm 11 and the clamp jaw 30 is transferred to the cable insertion hole 131 of the lower arm 13. It can be transferred to a gripping branch cable (not shown). In this case, in order to prevent an accident, the outside of the clamp body 10 may be surrounded by an insulating material except for a portion where the cable contacts.

The jaw adjustment member 20 is a bolt-shaped member that is formed long as shown in Figure 3a. The jaw adjustment member 20 is disposed in parallel with the longitudinal direction of the clamp body 12, it is installed in a form that penetrates both the upper clamp arm 11 and the lower lower arm 13. At this time, since the thread is not formed on the inner circumferential surface of the hole through which the jaw adjusting member 20 penetrates from the clamp arm 11 and the lower arm 13, the jaw adjusting member 20 is idle even when rotated, so that the jaw adjusting member 20 is clamped. The position does not change with respect to the main body 10.

The clamp jaw 30 grips the lower part of the cable as shown in FIG. 3A and thus acts as a kind of jaw. In addition, the clamp arm 11 which grips the power cable (not shown) together with the clamp jaw 30 is formed with a cradle 111 that protrudes long, so that the cradle 111 may not be in contact with the power cable. Since it is mounted on the power cable (not shown), it is not necessary to support the live clamping clamp 1 according to the present embodiment from below.

A through hole 31 is formed in the clamp jaw 30, and the jaw adjusting member 20 is inserted into the through hole 31. In particular, the through hole 31 is formed on the inner circumferential surface of the thread corresponding to the thread formed on the outer circumferential surface of the jaw adjustment member 20. Therefore, when rotating the jaw adjusting member 20, the clamp jaw 30 is raised or lowered. Since the clamp jaw 30 has a lower groove 32 having a shape that is curved upwardly as shown in FIG. 4 on the upper surface thereof, the clamp jaw 30 meets the upper groove 112 of the bottom surface of the clamp arm 11 when raised. A similarly shaped space is formed where the power cable (not shown) is gripped.

By the way, the clamp jaw 30 is elevated when the jaw adjusting member 20 is rotated but should be prevented to rotate together along the jaw adjusting member 20. 4 and 5, guide jaws 33 are formed at both sides of the clamp jaw 30 toward the clamp body 12. The guide arm 33 is formed to surround a part of the clamp body 12, as shown in Figure 5, in this case, the clamp jaw (30) does not need to be made unnecessarily large guides to the clamp body 12 A step may be elongated in the vertical direction in a space corresponding to the volume of the trajectory through which the arm 33 passes.

Due to the guide arm 33, when the jaw adjusting member 20 is rotated, the clamp jaw 30 is variable only up and down and is not rotated. Therefore, it is not necessary to adjust the direction of the lower groove 32 to coincide with the longitudinal direction of the power cable (not shown) at the point where the clamp jaw 30 contacts the power cable (not shown). This is because the direction of the lower groove 32 is fixed in the longitudinal direction of the power cable (not shown) and does not change.

Particularly, as shown in FIG. 6, a portion of the upper surface of the clamp jaw 30 that comes into contact with the bottom surface of the clamp arm 11 when the upper surface of the clamp jaw 30 is close to the lower surface of the clamp jaw 11 is cut off except for the center thereof. 34) can be formed. In addition, the bottom groove of the upper surface protrusion 34 is inserted into a portion of the lower surface of the clamp arm 11 which is in contact with the upper surface of the clamp arm 11 when the upper surface of the clamp jaw 30 is in contact with the upper surface of the clamp arm 11. 113 may be formed. As a result, the upper groove 112 of the bottom surface of the clamp arm 11 and the lower groove 32 of the upper surface of the clamp jaw 30 may be closer to each other. Workable power cable specifications can be more diverse.

On the other hand, the jaw adjustment member 20 is installed to extend to the bottom of the lower arm 13 through the lower arm 13 connected to the lower portion of the clamp body 12, as shown in Figure 3a.

Here, the lower end of the jaw adjusting member 20 is coupled to the stick fastening unit 40 for connecting the insulating stick (not shown) provided to rotate the jaw adjusting member 20 and the jaw adjusting member 20.

As shown in FIG. 7, the stick fastening unit 40 has grooves formed at both the upper and lower portions thereof, and the lower end of the jaw adjusting member 20 is inserted into the groove formed at the upper portion, and the insulation stick is formed from the lower portion at the groove formed at the lower portion thereof. An upper end of (not shown) is inserted.

In order to raise or lower the clamp jaw 30, the jaw adjusting member 20 must be rotated, and the jaw adjusting member 20 is rotated by an insulating stick (not shown) by rotating the stick fastening unit 40. Therefore, the jaw adjustment member 20 and the stick fastening unit 40 are coupled to rotate with each other.

As the coupling tool, as shown in FIG. 7, when the jaw adjusting member 20 is inserted into the stick fastening unit 40, the release preventing pin 41 penetrating both the jaw adjusting member 20 and the stick fastening unit 40. By providing this, the jaw adjustment member 20 and the stick fastening unit 40 can be rotated together.

In this case, one or more departure preventing grooves 21 may be formed at the lower end of the jaw adjustment member 20 as shown in FIG. 7.

In addition, an insulating stick (not shown) may have an upper protrusion D formed at an upper end thereof. As the upper protrusion D is inserted into the lower portion of the stick fastening unit 40, the insulating stick (not shown) and the stick fastening unit 40 are coupled to each other.

In the stick fastening unit 40, as shown in FIG. 7, the opening groove 43 is formed by a predetermined length from the other edge toward the top. The opening groove 43 is composed of a vertical groove 431 formed in the insertion direction of the insulating stick (not shown), and a horizontal groove 432 extending at right angles from the end of the vertical groove 431, the insulating stick end An upper protrusion D having a protruding shape formed therein passes through the vertical groove 431 and then inserted into the horizontal groove 432, thereby preventing separation of the stick fastening unit 40 and an insulating stick (not shown).

Meanwhile, as shown in FIG. 3A, a mounting arm 51 that can be mounted on a power cable (not shown) is formed at one end of the clamp body 10, and the other end of the rod member 52 coupled to the upper portion of the clamp body 10. The mounting unit 50 may be installed.

Specifically, the rod member 52 is generally installed in a form in which the clamp body 12 extends, the mounting arm 51 is coupled to the upper end of the rod member 52, the mounting arm 51 and the rod member 52. Are inclined to meet each other, when the power cable (not shown) is mounted in the form of being inserted between the mounting arm 51 and the rod member 52, the clamp body 10 is coupled to the lower mounting unit 50 Because of this, the entire live clamp (1) can be mounted as shown in FIG.

In particular, as shown in FIG. 3b, the mounting arm 51 is coupled to the rod member 52 and the hinge 56, and the mounting arm 51 has a mounting portion 513 at one side about the hinge axis 56. The lever part 512 is formed on the other side, and a spring 55 that applies an elastic force to the bottom surface of the lever part 512 may be installed on the rod member 52.

At this time, the power cable 3 is inserted between the rod member 52 and the mounting portion 513 and tightened by the elastic force, so that the clamp according to the present invention can be stably adhered to the power cable 3.

Also, as shown in FIG. 3B, a safety release guide 511 is formed at a distal end of the mounting portion 513 so that the angle formed by the mounting portion 513 with the horizontal line is reduced. 3) The excessive jumping of the power cable 3, such as the moment of pulling and releasing the bow demonstration, is prevented, and when the power cable 3 is mounted on the power cable 3, the power cable 3 smoothly hangs the arm and the rod member. It can be guided in and inserted easily.

Therefore, when using the clamp according to the present invention, the operator can easily and safely control the clamp from the mounting of the clamp for work preparation to the process of recovering the clamp upon completion of the work, while being able to operate the clamp.

In addition, the non-slip portion 54 is formed on the inner surface of the rod member 52 at the lower portion of the point where the power cable 3 is in contact as shown in FIG. It can be prevented from being separated from the power cable 3 while swinging up and down.

When the three mounting units 50 are prepared to form one set, one mounting unit 50 is provided for each of the three-phase power cables 3 as shown in FIG. 2, and three mounting units forming the set ( 50 may be manufactured so that the colors of the mounting arm 51 are different from each other. Thus, during the work preparation process, it is not necessary to lift the live work clamp (1) separately in the middle of the work by pre-mounting the live work clamp (1) to each power cable (3) according to the corresponding polarity. ) Do not need to be supported from below.

Since the clamp for live work according to the present invention is configured as described above, the clamp can be controlled by a simple mechanical operation without the fine direction control of the clamp, so that the work on the high-power cable can be easily performed, thus ensuring safety. It is possible to perform the work without directly supporting the load of the clamp, there is an effect that the COS replacement, jumper wire replacement and other live work can be made much easier.

The present invention described above is not limited to the above-described embodiment and the accompanying drawings, and various substitutions, modifications, and changes are possible within the scope without departing from the technical spirit of the present invention. It will be evident to those who have knowledge of.

D: Upper protrusion 1: Live clamp
2: transformer 3: power cable
4: insulator 5: branch cable
6: bushing 10: clamp body
11 clamp arm 12 clamp body
13: lower arm 20: jaw adjustment member
21: departure prevention groove 30: clamp jaw
31: through hole 32: lower groove
33: guide arm 34: upper projection
40: stick fastening unit 41: release prevention pin
42: second departure preventing groove 43: opening groove
50: mounting unit 51: mounting arm
52: rod member 53: coupling screw
54: non-slip unit 55: spring
56: hinge 111: holder
112: upper groove 121: guide arm coupling step
131 cable insertion hole 132 cable fixing screw
431 vertical groove 432 horizontal groove
433: seating hole 511: safety release guide
512: lever portion 513: mounting portion

Claims (12)

A clamp body comprising a clamp arm and a clamp body, wherein the clamp body is made of a conductor;
A clamp jaw that is variable in a sliding manner along a lengthwise direction of the clamp body and is controlled from a clamp arm; And,
It is formed as a long member, coupled to the clamp body in parallel to the longitudinal direction of the clamp body, is installed through the clamp jaw consists of a jaw adjustment member for varying the clamp jaw in a sliding manner,
Bypass connection clamp for live work, in which the clamp body is formed with a cable insertion hole through which the cable is inserted through the clamp arm. The method of claim 1,
The clamp jaw is formed with a thread on the inner circumferential surface of the through hole through which the jaw adjustment member is inserted,
The outer circumferential surface of the jaw adjusting member is formed with a thread corresponding to the thread of the inner circumferential surface of the through hole, the bypass jaw connection clamp for the jaw work characterized in that the clamp jaw is changed in the longitudinal direction of the jaw adjusting member as the jaw adjusting member is idle. The method of claim 2,
The clamp jaw is formed to project a guide arm surrounding a portion of the outer peripheral surface of the clamp body, thereby preventing the clamp jaw from rotating together with the jaw adjusting member when the jaw adjusting member is idle. Bypass connection clamp for live work, characterized in that the variable. The method of claim 2,
The end of the jaw adjustment member, the bypass connection clamp for live work, characterized in that the sticking unit for connecting the insulation stick and the jaw adjustment member provided to rotate the jaw adjustment member is coupled. The method of claim 4, wherein
The stick fastening unit is inserted through the jaw adjustment member at one end, the insulating stick is inserted through the other end,
The bypass connection clamp for live work, characterized in that the stick fastening unit and the jaw control member is provided through the separation prevention pin which is inserted through the jaw adjustment member together. The method of claim 4, wherein
An opening groove is formed on the outer circumferential surface of the stick fastening unit by a predetermined length from the other edge,
The opening groove is composed of a vertical groove formed in the insertion direction of the insulating stick, and a horizontal groove extending at right angles from the end of the vertical groove, and a protrusion having a protrusion shape formed at the end of the insulating stick passes through the vertical groove and then into the horizontal groove. By-insertion, the bypass connection clamp for live work, characterized in that the separation of the stick fastening unit and the insulating stick is prevented. The method of claim 6,
The end of the horizontal groove is formed with a seating hole having a diameter larger than the width of the horizontal groove, the projection is inserted into the seating hole, by-line for the live work, characterized in that the coupling of the insulating stick and the stick fastening unit is stably maintained Pass connection clamp. The method of claim 1,
A mounting unit including a mounting arm capable of being mounted on a power cable and a rod member connected to the mounting arm and coupled to an upper portion of the clamp body; Bypass connection clamp for live work, characterized in that the provided. The method of claim 8,
The mounting arm is coupled to the rod member and the hinge, the mounting arm is formed on one side around the hinge axis and the lever is formed on the other side, the rod member is provided with a spring for applying an elastic force to the bottom of the lever,
And a power cable is inserted between the rod member and the mounting portion and tightened by the elastic force, thereby stably mounting the power cable to the power cable. The method of claim 9,
At the end of the mounting portion is formed a safety release guide which is a section in which the angle between the mounting portion and the horizontal line is reduced, preventing the power cable from being excessively bounced at the moment when the mounting portion is separated from the power cable, when the power cable is mounted on the power cable Bypass connection clamp for live work, characterized in that the cable is guided smoothly between the mounting arm and the rod member. The method of claim 8,
The mounting unit is prepared to form a set of three is provided with one mounting unit for each three-phase power cable, the three mounting units of the set is made of a different color of the mounting arm,
An anti-slip is formed on the inner surface of the rod member at a lower part of the point where the power cable is in contact, so that the mounting unit is prevented from being separated from the power cable when the mounting unit is swung up and down due to the vibration of the wind. Bypass connection clamp for work. The method of claim 1,
The upper surface of the clamp arm is formed on the bottom surface of the clamp arm, the upper surface of the clamp jaw is formed a lower groove corresponding to the upper groove,
Among the upper surface of the clamp jaw, the portion of the upper surface of the clamp jaw that comes into contact with the lower surface of the clamp arm is incised to form an upper surface protrusion at the center thereof.
The bottom groove of the clamp arm is in contact with the upper surface of the clamp arm when it is close to the upper surface of the clamp jaw to form a bottom groove into which the upper projection is inserted.
Bypass connection clamp for live work, characterized in that the type according to the diameter of the cable that can be fixed between the upper groove and the lower groove is expanded.

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