KR20130020389A - Hot line clamp for power line - Google Patents

Hot line clamp for power line Download PDF

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Publication number
KR20130020389A
KR20130020389A KR1020110083003A KR20110083003A KR20130020389A KR 20130020389 A KR20130020389 A KR 20130020389A KR 1020110083003 A KR1020110083003 A KR 1020110083003A KR 20110083003 A KR20110083003 A KR 20110083003A KR 20130020389 A KR20130020389 A KR 20130020389A
Authority
KR
South Korea
Prior art keywords
branch ring
fixing
screw thread
hole
thread
Prior art date
Application number
KR1020110083003A
Other languages
Korean (ko)
Inventor
정영필
박동환
홍영기
김홍진
Original Assignee
한국전력공사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 한국전력공사 filed Critical 한국전력공사
Priority to KR1020110083003A priority Critical patent/KR20130020389A/en
Publication of KR20130020389A publication Critical patent/KR20130020389A/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B31/00—Screwed connections specially modified in view of tensile load; Break-bolts
    • F16B31/02—Screwed connections specially modified in view of tensile load; Break-bolts for indicating the attainment of a particular tensile load or limiting tensile load
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
    • H02G1/02—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G7/00—Overhead installations of electric lines or cables
    • H02G7/02—Devices for adjusting or maintaining mechanical tension, e.g. take-up device
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G7/00—Overhead installations of electric lines or cables
    • H02G7/05—Suspension arrangements or devices for electric cables or lines
    • H02G7/053—Suspension clamps and clips for electric overhead lines not suspended to a supporting wire
    • H02G7/056—Dead-end clamps

Abstract

Live clamps for power distribution lines are provided. The live clamp includes a body portion including a fixing groove for fixing a branch ring at one side and a through hole formed to face the fixing groove, a lead wire fixing portion formed at the other side of the body portion to connect a lead wire, and the through hole. And an elastic member coupled to the body portion through the branch ring fixing portion for fixing the branch ring between the fixing groove and the branch ring fixing portion to closely contact the branch ring fixing portion with the branch ring. do.

Description

Live clamp for power distribution line {HOT LINE CLAMP FOR POWER LINE}

The present invention relates to a live clamp for a distribution line, and relates to a live clamp for easily coupling the live clamp to a branched loop of the distribution line.

Transformers, breakers, switchgear, and lightning arresters are installed in the overhead distribution line. In order to connect such devices to a power distribution line, there is a method of directly connecting the device lead wires to the power distribution line by connecting them, and an indirect connection using a branch ring and a live clamp.

Among the equipment, the transformer is protected by using a cutout switch (hereinafter referred to as COS), which is a protection device capable of blocking load current and fault current.

In addition, COS has a function to protect by blocking the opening and closing of single-phase distribution line. The thickness of the COS lead wire is 5.0 mm in diameter. When the lead wire is directly connected to the power distribution line, it is not easy to work because the direct connection must be made by using a branch sleeve. In addition, in the event of a failure or failure after direct connection, the live wire must be cut and replaced with a new lead, which is not possible with general equipment or tools and is time consuming. Therefore, it is preferable to connect the distribution line and the equipment such as the COS through a live clamp or the like.

However, the conventional live clamp for distribution lines is too long compared to the diameter of the branch ring, which takes a lot of unnecessary time during the work, in particular, there is a problem that there is a risk of safety accidents due to the long tightening of long screws in the pole of the high position There is.

In this regard, Japanese Utility Model Publication No. 20-0299520 discloses a "live clamp structure". The invention of Korean Utility Model Publication No. 20-0299520 relates to a live clamp that connects an electric wire branch ring and a cut line of a cutout switch on a distribution line, and a spring washer is connected to a connection connector for connecting the cut line of the cutout switch. The built-in tightening bolt is inserted, and a lower line connecting hole is formed in the lower portion of the tightening bolt.

Korean Utility Model Registration No. 0299520, "Live Clamp Structure"

In order to solve the above problems of the prior art, the present invention provides an improved live clamp that can connect or disconnect the branch ring of the distribution line more easily than the conventional live clamp.

The objects of the present invention are not limited to the above-mentioned objects, and other objects not mentioned can be clearly understood from the following description.

In order to achieve the above object, the live clamp according to an aspect of the present invention, a body portion including a fixing groove for fixing the branch ring on one side and a through hole formed opposite the fixing groove, the other side of the body portion A lead wire fixing part which is formed to connect the lead wire, is coupled to the body part through the through hole, and is connected to the branch ring fixing part that fixes the branch ring between the fixing groove and the branch ring fixing part. And an elastic member that closely attaches the ring fixing portion to the branch ring.

Here, the branch ring fixing portion, the diameter is smaller than the diameter of the through hole, and includes a screw thread formed on the surface, the connection terminal formed on one side of the bolt and the eye bolt ring formed on one side of the bolt Can be.

The screw thread may include a first screw thread formed to rotate in a first direction and a second screw thread formed to rotate in a second direction opposite to the first direction.

Here, a thread having a size corresponding to the first screw thread and the second screw thread is formed inside the through hole, and when the screw thread of the through hole and the first screw thread are engaged with each other, the fixing groove and the branch ring height are formed. The gap with the government can be maximum.

Here, a thread having a size corresponding to the first screw thread and the second screw thread is formed inside the through hole, and when the screw thread of the through hole and the second screw thread are engaged with each other, the fixing groove and the branch ring height are formed. The gap with the government may be minimal.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG.

The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. It is provided to fully inform the owner of the scope of the invention.

According to one of the problem solving means of the live clamp of the present invention described above, the live clamp body and the branch ring can be easily connected and fixed.

In addition, the length of the thread of the branch ring fixing portion can be significantly reduced as compared with the conventional one, and thus the breakage of the live clamp due to the damage of the thread can be reduced.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the connection state of the live wire clamp for distribution lines, and the branch ring of a distribution line.
2A and 2B are front and side views showing a live clamp for a distribution line in the related art.
3A and 3B are front and side views illustrating a live clamp for a distribution line according to an embodiment of the present invention.
Figure 4 is a view showing the configuration of the branch ring fixing portion of the live clamp according to an embodiment of the present invention.

The present invention may be variously modified and have various embodiments, and specific embodiments will be illustrated in the drawings and described in detail with reference to the accompanying drawings.

It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

In addition, when a part is said to "include" a certain component, it means that it can further include other components, without excluding other components unless otherwise stated.

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

1 is a view showing a connection state of the live clamp for the distribution line and the branch ring of the distribution line. As shown in FIG. 1, the distribution line 10 is located at an upper end of a pole (not shown), and a branch sleeve cover 20 is mounted on a predetermined portion of the distribution line 10. Branch ring 30 is coupled to the distribution line 10 in the branch sleeve cover 20, the combined branch ring 30 extends out of the branch sleeve cover 20.

Outwardly extending branch ring 30 is coupled to the live clamp 100. The device lead wire 40 is coupled to the live clamp 100, and the other end of the device lead wire 40 coupled to the live clamp 100 is connected to a transformer (not shown) installed in the pole.

Hereinafter, a detailed configuration of the live clamp 100 coupled to the branch ring 30 will be described with reference to the drawings.

2A and 2B are front and side views showing a live clamp for a distribution line in the related art.

As shown in FIGS. 2A and 2B, the conventional live clamp 100 includes a body part 110, a branch ring fixing part 120, and a lead wire fixing part 130.

The body portion 110 is formed with a hole through which the branch ring fixing part 120 is coupled, and a fixing groove is formed in contact with the branch ring 30 at a position opposite to the hole. The branch ring fixing part 120 inserted through the hole tightly fixes the branch ring 30 in the direction of the fixing groove.

Branch ring fixing part 120 is inserted into the groove through a bolt having a thread 123, it is possible to tighten or loosen the bolt by rotating the eye bolt ring 122 formed on one side of the thread 123. A connection terminal 121 is formed at the other side of the thread 123, and the connection terminal 121 may be raised upward by raising the bolt by the rotation of the thread 123.

The lead wire fixing unit 130 couples the device lead wire 40 to the live clamp.

The conventional live clamp of this configuration is generally connected to the branch ring, and then the branch ring 30 is engaged with the fixing groove of the body 110 and the connection terminal 121 of the branch ring fixing part 120 to be tightly fixed. Rotate the eye bolt ring 122 until it raises the thread 123 as much as possible. In this case, the diameter of the general branch ring 30 is only about 6.5mm. On the other hand, the length of the thread 123 of the conventional live clamp is about 35 mm, which unnecessarily consumes a lot of time for tightening the thread 123, resulting in inefficient work efficiency, and also for a long time in the high position pole. The risk of a safety accident from tightening increases.

In order to solve this problem, one embodiment of the present invention reduces the length of the thread to less than one third, thereby reducing the time required to tighten the thread to less than one third.

3A and 3B are front and side views illustrating a live clamp for a distribution line according to an exemplary embodiment of the present invention. As shown in FIGS. 3A and 3B, the live clamp according to an embodiment of the present invention includes a body portion 210, a branch ring fixing portion 220, an elastic member 230, and a lead wire fixing portion 240. do.

Body portion 210 is one side is formed in a recessed "C" shape, the branch ring fixing part 220 is coupled through the hole formed in the lower end of the "C" shape. In addition, the upper end facing the hole is formed with a fixing groove in contact with the branch ring (30). The branch ring fixing part 220 inserted through the hole tightly fixes the branch ring 30 in the fixing groove direction.

The branch ring fixing part 220 includes connection terminals 221 and eye bolt rings 222 formed on both sides of the bolt, respectively. Branch ring fixing part 220 is inserted into the hole through the bolt, it is possible to tighten or loosen the bolt by rotating the eye bolt ring 222 formed on one side. The connection terminal 221 formed on the other side of the bolt proceeds in the direction of the fixing groove of the body portion 210 as the bolt is raised by the rotation of the eye bolt ring 222.

The elastic member 230 is coupled to the branch ring fixing part 220 to bring the branch ring fixing part 220 into close contact with the fixing groove direction of the body part 210.

Lead wire fixing 240 connects the device lead to an active clamp. The fixing of the device lead wire is the same as that of the conventional active clamp, and a description thereof will be omitted.

The configuration and operation of the branch ring fixing part 220 and the elastic member 230 will be described with reference to FIG. 4.

Figure 4 is a view showing the configuration of the branch ring fixing portion of the live clamp according to an embodiment of the present invention. As shown in FIG. 4, the first screw thread 223 and the second screw thread 224 are formed on the bolt in the direction of the eye bolt ring 222 and are separated from each other at regular intervals. The first screw thread 223 and the second screw thread 224 are formed such that the squares of the threads are opposite to each other.

On the other hand, when the branch ring fixing part 220 is inserted into and coupled to the hole of the body portion 210, the lower portion of the "C" shape in which the hole is formed is the first screw thread 223 and the second screw thread 224 of the bolt. ) Is located between. In addition, the elastic member 230 is coupled between the lower end of the "-" shaped hole formed in the hole and the connection terminal 221.

To couple the branch ring 30 to the live clamp, first pull the eyebolt ring 222 to lower the branch ring fixing part 220. In this case, the upper part of the screw thread formed inside the hole of the lower end of the "c" shape and the lower part of the first screw thread 223 are in contact with each other. In this state, the eye bolt ring 222 is rotated to rotate the screw thread and the thread. One screw thread 223 is engaged and the position of the branch ring fixing part 220 is fixed. In this state, the gap between the fixing groove of the body portion 210 and the connection terminal 221 is maximized.

Subsequently, after the branch ring 30 is positioned between the connecting terminal 221 of the branch ring fixing part 220 and the fixing groove of the body part 210, the eye bolt ring 222 is rotated in the opposite direction to engage the interlocking hole. Loosen the thread and the first screw thread (223). In this case, the branch ring fixing part 220 is in close contact with the fixing groove direction of the body part 210 by the elasticity of the elastic member 230. Thereafter, the eye bolt ring 222 is rotated to engage the second thread 224 with the thread of the hole. The eye bolt ring 222 is rotated until the branch ring 30 is fixed between the connecting terminal 221 and the fixing groove of the body portion 210.

Through such a configuration, the live clamp according to the exemplary embodiment of the present invention has a first screw thread 223 and a second screw thread 224 in comparison with a conventional active clamp 100 having a thread length of about 35 mm. Since the sum of the lengths is only about 10 mm, the number of rotations and the time required for fixing the branch ring are reduced by more than half.

In addition, the working time is significantly reduced compared to the conventional active clamp, it is possible to prevent safety accidents in column work or bad weather.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention.

Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments.

The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

Claims (5)

In the live clamp for distribution line,
Body portion including a fixing groove for fixing the branch ring on one side and a through hole formed opposite to the fixing groove,
A lead wire fixing part formed on the other side of the body part to connect a lead wire;
A branch ring fixing portion coupled to the body portion through the through hole and fixing the branch ring between the fixing grooves;
An elastic member coupled to the branch ring fixing part to close the branch ring fixing part to the branch ring;
Live clamp for power distribution line comprising a. The method of claim 1,
The branch ring fixing portion,
A diameter smaller than the diameter of the through hole, the threaded surface of the bolt,
Connection terminal formed on one side of the bolt and
Eye bolt ring formed on one side of the bolt
Live clamp for power distribution line comprising a.
The method of claim 2,
The thread is,
A first screw thread formed to rotate in a first direction and
A second screw thread formed to rotate in a second direction opposite to the first direction
Live clamp for power distribution line comprising a. The method of claim 3, wherein
Inside the through hole, a thread having a size corresponding to the first screw thread and the second screw thread is formed.
When the thread of the through-hole and the first screw thread are engaged, the distance between the fixing groove and the branch ring fixing portion is maximized.
Live clamps for power distribution lines.
The method of claim 3, wherein
Inside the through hole, a thread having a size corresponding to the first screw thread and the second screw thread is formed.
When the thread of the through hole and the second screw thread are engaged, the distance between the fixing groove and the branch ring fixing portion is minimized.
Live clamps for power distribution lines.
KR1020110083003A 2011-08-19 2011-08-19 Hot line clamp for power line KR20130020389A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020110083003A KR20130020389A (en) 2011-08-19 2011-08-19 Hot line clamp for power line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020110083003A KR20130020389A (en) 2011-08-19 2011-08-19 Hot line clamp for power line

Publications (1)

Publication Number Publication Date
KR20130020389A true KR20130020389A (en) 2013-02-27

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ID=47898349

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020110083003A KR20130020389A (en) 2011-08-19 2011-08-19 Hot line clamp for power line

Country Status (1)

Country Link
KR (1) KR20130020389A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104319681A (en) * 2014-06-30 2015-01-28 国家电网公司 Protective device of live wire
CN110212325A (en) * 2019-05-23 2019-09-06 云南电网有限责任公司昆明供电局 A kind of ground line installing combination tool of band abnormal shape wire clamp

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104319681A (en) * 2014-06-30 2015-01-28 国家电网公司 Protective device of live wire
CN110212325A (en) * 2019-05-23 2019-09-06 云南电网有限责任公司昆明供电局 A kind of ground line installing combination tool of band abnormal shape wire clamp
CN110212325B (en) * 2019-05-23 2024-04-05 云南电网有限责任公司昆明供电局 Special-shaped wire clamp mounting ground wire combination tool

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