KR20240018803A - Voltage detecting and grounding device for transmission cable - Google Patents

Abstract

The present invention includes a body portion that extends in the longitudinal direction and whose length can be adjusted; An detection unit provided in the body to check whether the transmission cable is live; A grounding unit installed adjacent to the detection unit and electrically connected to the steel tower to perform grounding work; a power supply unit provided in the body to supply power to the detection unit and the grounding unit; and an operating unit connected to the power supply unit to control the operation of the detection unit and the grounding unit. The present invention is easy to carry and can safely perform electricity detection and grounding work through the detection unit and the grounding unit.

Description

{VOLTAGE DETECTING AND GROUNDING DEVICE FOR TRANSMISSION CABLE}

The present invention relates to an electrical detection and grounding device for a transmission cable, and more specifically, to an electrical detection and grounding device for a transmission cable that can safely and easily perform electrical detection and grounding of the transmission cable.

Generally, after a power outage on a transmission line, a worker climbs the relevant steel tower and performs inspection and grounding work on the transmission cable before executing the work.

In other words, the worker uses a detector provided on an insulating rod that can be extended in length to check whether the line is diagonal or live, puts a mark (flag) on the live line, and performs grounding work using a grounding tool for the outage line. After this, the necessary maintenance work on the truce line will be performed.

Workers generally carry the detector (1) shown in Figure 1(a), the insulating rod (2) and the ground wire (3) shown in Figure 1 (b) while climbing aboard. In particular, the ground wire is long and The weight is large. For example, ground wires generally used for grounding work require 25㎟

Therefore, if you combine the weight of the detector (1) and the insulating rod (2), the total weight of the equipment becomes about 10-15Kg. Especially in the case of steel towers installed in mountainous areas, workers carry these equipment and move to the tower to work. It is physically taxing to climb to the location, and there are difficulties such as the equipment interfering with the structure of the steel tower when climbing.

In addition, after boarding, at least two workers must assemble and connect the detector (1), the insulating rod (2), and the ground wire (3), which takes time and is inconvenient to handle these equipment in the limited space of the tower. There is something to do.

Furthermore, when the worker performs grounding work without using the insulating rod (2), the worker grips the ground wire (3) by hand, resulting in incomplete grip in the state where it is stretched over the conductor, or the worker grips the ground wire (3) with its sheath peeled off. In this case, there is a risk of safety accidents such as electric shock.

Therefore, for safety management of power outage work, grounding work must be performed by maintaining a sufficient safety distance from the grounding object and using appropriate insulating rods and safety equipment. The grounding wire should be considered a charged conductor, so that parts of the worker's body are as close to the grounding wire as possible. Although it is necessary to be careful not to come into contact with , there is a risk of safety accidents due to workers ignoring or overlooking this.

Accordingly, there is a request for the development of a device that is easy to carry and can safely perform electric shock and grounding work for power outage work on transmission cables.

Republic of Korea Patent Publication No. 10-2013-0014085 (2013.02.07.) Japanese Patent Publication No. 5283163 (2013.09.04.)

The present invention was developed in consideration of the above-mentioned problems of the prior art, and provides an electric shock and grounding device for a transmission cable that is easy for workers to carry and can safely and efficiently perform electric shock and grounding work at the work location.

The detection and grounding device for a transmission cable according to an embodiment of the present invention to solve the above technical problem is for detecting and grounding a transmission cable provided in a transmission line of a steel tower. A device comprising: a body extending in a longitudinal direction and having an adjustable length; An detection unit provided in the body to check whether the transmission cable is live; A grounding unit installed adjacent to the detection unit and electrically connected to the steel tower to perform grounding work; a power supply unit provided in the body and supplying power to the detection unit and the grounding unit through electric wires; and an operating unit connected to the power supply unit to control the operation of the detection unit and the grounding unit.

In the present invention, the body portion has a hollow rod shape, and the wire connected to the power supply unit can be accommodated therein.

The detection unit and the grounding unit are integrally coupled to the body, so that detection and grounding operations can be performed sequentially.

The detector unit of the present invention is connected to the power supply unit to indicate the live state with a sound when the transmission cable is live, and may include an detector connected to an insulating rod.

The grounding unit of the present invention includes a motor connected to a power supply and driven; An arm that moves forward and backward by the driving force of the motor and has a groove formed at the tip; and a hook coupled to the body and holding the transmission cable together with the arm.

In the present invention, the rotational force of the driving force of the motor may include a driving force conversion member that converts it into linear motion of the arm.

The driving force conversion member of the present invention may include a rack and pinion.

A plurality of ground guides may be additionally provided at the lower part of the body portion of the present invention to accommodate and guide the ground wire.

The electrical detection and grounding device for a transmission cable according to another embodiment of the present invention is an electrical detection and grounding device for a transmission cable for performing detection and grounding of a transmission cable provided in a transmission line of a steel tower, and the length can be extended. A body portion of a telescopic structure including a length adjusting portion and a length fixing portion; An detection unit provided in the body to check whether the transmission cable is live; A grounding unit installed adjacent to the detection unit and electrically connected to the steel tower to ground the grounding wire; a plurality of ground guides coupled to the body to receive and guide the ground wire; a power supply unit provided in the body to supply power to the detection unit and the grounding unit; and an operating unit connected to the power supply unit to control the operation of the detection unit and the grounding unit.

The present invention may further include a crimp terminal that detachably couples one end of the ground wire to the lower part of the body and electrically connects it to the ground unit.

The grounding unit of the present invention may further include an indicator light that flashes when the grounding wire is connected to the pylon and grounding is completed.

In the present invention, the other end of the body may be provided with a handle that the worker can hold with his hand.

In the present invention, the detection unit and the grounding unit are integrated, making it possible to reduce the weight, and the operator can easily carry it and board it.

The present invention allows workers to easily extend or shorten the length to the required length depending on the work area, and performs the electricity detection and grounding work sequentially by simply operating the detection unit and the grounding unit through the operating unit, thereby reducing the time required for the detection and grounding work. can be shortened.

The present invention can prevent safety accidents such as electric shock by guiding workers to perform necessary power transmission work safely after checking the grounding status through the indicator light of the grounding unit.

In addition, the present invention has a simple structure of an electric shock and grounding device, making it easy to manufacture and easy to handle.

The present invention will be more clearly understood with reference to the accompanying drawings:
Figure 1(a) shows a detector to which a general insulating rod is connected, and Figure 1(b) shows a part of a general insulating rod and ground wire.
Figure 2 is a front view showing a state in which an electric shock and grounding device according to an embodiment of the present invention grips a transmission cable and performs grounding work.
FIG. 3 is similar to FIG. 2 and is a front view showing a state in which the body part is extended and the grip on the transmission cable is released when an electric shock operation is performed using an electric shock unit in a state in which the ground wire (W) is not connected.
Figure 4 is a plan view showing the operation unit and handle unit provided in the body of the present invention.

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

Embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. It should be noted that the same configuration may be indicated by the same reference numeral in each drawing. Detailed descriptions of well-known functions and configurations that are judged to unnecessarily obscure the gist of the present invention are omitted. For reference, the same name and reference numeral are given to the same configuration as the conventional (existing) configuration of the present invention, and overlapping descriptions are omitted.

Figure 2 is a front view showing an electric shock and grounding device 100 for a power transmission cable according to an embodiment of the present invention.

An electric shock and grounding device 100 for a transmission cable according to an embodiment of the present invention includes a body portion 10 extending in the longitudinal direction to perform electricity detection and grounding for a transmission cable; An inspection unit (20) that checks whether the transmission cable is live; Grounding unit 30 for grounding the steel tower (T); A power supply unit 40 that supplies power to the detection unit 20 and the grounding unit 30; and a manipulation unit 50 that controls the operation of the detection unit 20 and the grounding unit 30.

The body portion 10 has a hollow rod shape and can accommodate an electric wire 41 connected to the power supply portion 40 therein.

The detector unit 20 of the present invention has a structure similar to that of Figure 1(a), for example, and includes an detector 22 attached to a hook 21 that is hung on a transmission cable C to check the live state, and the detector 22 (22) is detachably coupled to one end of the body portion 10 via a fastening means such as a bolt.

In addition, the detector 22 may be connected to the power supply unit 40 and include a function of indicating the live state with a sound when the transmission cable C is live. Since this is a typical configuration, detailed description will be omitted.

Meanwhile, the grounding unit 30 of the present invention includes a motor 31 connected to and driven by the power supply unit 40; An arm 33 that moves forward and backward by the driving force of the motor 31 and has a groove 32 at the tip; and a hook 34 coupled to the body 10 and holding the transmission cable C together with the arm 33.

Therefore, when power is applied to the motor 31 and driven, the rotational force of the output shaft (not shown) of the motor 31 is transmitted to the arm through a driving force conversion member 35 such as a rack and pinion or a jackscrew. Converted into a linear motion of (33), the groove portion 32 formed at the end of the arm 33 moves forward and cooperates with the hook 34 to grip the transmission cable (C), or the groove portion 32 The gripping state of the transmission cable (C) may be released by retracting from the hook (34).

The power supply unit 40 of the present invention is provided at the other end of the body unit 10, includes a battery 42, and is connected to the detection unit 20 and the grounding unit 30 via a wire 41. Supply power. Here, the battery 42 is preferably a rechargeable battery, but a typical non-rechargeable battery can also be used.

Meanwhile, the manipulation unit 50 of the present invention may be coupled to the upper part of the power unit 40, as shown in FIG. 4.

The operating unit 50 is equipped with four buttons, namely, a pair of grounding operation ON/OFF buttons 51 and 52 and a pair of grounding display ON/OFF buttons 53 and 54. Therefore, when the grounding ON button 51 is operated, the arm 33 moves forward via the grounding unit 30 to hold the transmission cable (C) between the hooks 34, and the grounding operation OFF button ( When 52) is pressed, the reverse operation as above occurs and the holding state of the transmission cable (C) is released.

At this time, when the worker presses the grounding indicator ON button (53), the indicator light (36) blinks, allowing the grounding status of the transmission cable (C) to be confirmed, and by pressing the grounding indicator OFF button (54), the indicator lamp (36) blinks. 36) can be turned off.

Meanwhile, a handle portion 60 that an operator can hold with his or her hand may be provided at the other end of the body portion 10. The handle portion 60 may be coated or covered with a grip member 61 having an uneven surface so that it is easy for the operator to grip and increases grip strength without slipping.

As a modified example of the present invention, the body portion 10 may be configured with a telescopic structure to extend its length. That is, the body portion 10 may be composed of a length adjusting portion 12 and a length fixing portion 14 that can adjust the length by combining a plurality of hollow pipes of different diameters.

For example, the length adjustment portion 12 of the body portion 10 in FIGS. 2 and 3 is composed of four hollow pipes 12a, 12b, 12c, and 12d, and the number of pipes can be increased or decreased. Here, FIG. 2 shows the pipes 12a, 12b, 12c, and 12d of the length adjustment unit 12 each reduced to the minimum length, and FIG. 3 shows the pipes 12a, 12b, and 12b of the length adjustment unit 12. 12c and 12d) each show a state stretched to its maximum length.

Here, since the length of the body portion 10 can be adjusted in the present invention, it is possible to reduce the weight by eliminating the use of multiple sets of insulating rods and ground wires as in the prior art.

In particular, in the case of the ground wire (W), the electric detection and grounding device 10 of the present invention only needs to use one set of ground wires. For example, for 154 kV, the ground wire is about 3 m long, and for 345 kV, the ground wire is about 4.5 m long, The weight of the equipment carried and boarded by workers can be greatly reduced.

In addition, as shown in FIG. 3, in the present invention, after performing an electric shock operation through the electric detection unit 20 without connecting the ground wire (W), the body portion (W) is used to ground the ground wire (W). 10) may further include a crimp terminal 70 electrically connected to the ground unit 30 by combining one end of the ground wire (W) at the lower part.

At this time, it is preferable that the crimp terminal 70 is detachably coupled to the rear end of the hook 34 of the grounding unit 30.

Meanwhile, a plurality of ground guides 80 are coupled to the lower part of the body 10 to electrically safely receive and guide the ground wire (W), and the plurality of ground guides 80 have a ground wire (W) at the lower end. The penetrating holes 81 may be formed to correspond to each other.

Hereinafter, a method of detecting and grounding a power transmission cable (C) using the power detection and grounding device 100 for a power transmission cable according to an embodiment of the present invention having the above configuration will be briefly described.

First, the worker carries the electricity detection and grounding device 100 for the power transmission cable and climbs on the steel tower, and then expands and expands the length adjustment part 12 according to the distance from the power transmission cable C to be used to make the body part 10. Adjust the length.

Next, as shown in FIG. 2, the hook 21 of the detector 21 is hung on the transmission cable C to check the state of a diagonal or live wire by sound. That is, in the active state, a “beep” sound is generated from the electroscope 21, and in the diagonal state, there is no sound.

Next, for grounding work, one end of the grounding wire (W) is connected to the rear end of the hook 34 of the grounding unit 30 via the crimp terminal 70, and the other end of the grounding wire (W) is connected to a plurality of grounding guides. It extends through the hole 81 of (80) and is coupled to the steel tower (T) via a fastening member (F).

Next, by manipulating the grounding ON button 51 on the operating unit 50, the arm 33 moves forward via the grounding unit 30 to hold the transmission cable C between the hooks 34.

Press the grounding indication ON button (53), and when the indicator light (36) flashes, confirm that the grounding status of the transmission cable (C) is complete. Press the grounding indication OFF button (54), and then perform the necessary maintenance on the truce line. Repair work will be performed.

Meanwhile, when the power transmission work is completed, the operator operates the grounding operation OFF button 52 in the reverse order above, so that the arm 33 retreats via the grounding unit 30 and connects the power transmission cable (C) between the hooks 34. ), release the fastening member (F), separate the grounding wire (W) from the pylon (T), and then retrieve the electric detection and grounding device (100) for the transmission cable.

As described above, the electric detection and grounding device 100 for a transmission cable of the present invention is lightweight because the electric detection unit 20 and the grounding unit 30 are integrated, and the operator can easily carry it on board.

In addition, the worker can easily extend or shorten the length of the body portion 10 through the length adjustment portion 12 depending on the work location, and the detection unit 20 and the grounding unit 30 through the manipulation portion 50. ) can be operated to easily perform electric shock and grounding work sequentially, improving work efficiency by shortening the time for electric shock and grounding work.

Meanwhile, the present invention safely guides the ground wire (W) electrically through the ground guide (80) to ground it to the steel tower (T), allows the operator to check the sound generated in the live state of the detector (22), and ground the ground unit (30). The grounding status can be checked by checking whether the indicator light 36 of ) is blinking, thereby preventing safety accidents such as electric shock.

The above description describes preferred embodiments of the present invention, and the present invention is not limited to the above-described embodiments, but those skilled in the art can make modifications and changes without departing from the gist of the present invention, and such modifications can be made. and the modified technical idea should also be regarded as falling within the scope of the following patent claims.

100: Detection and grounding device (100)
10: Body part 12 Length adjustment part
14: Length fixing part 20: Detection unit
30: Ground unit 32: Groove
33: Arm 34: Hook
36: Ground indicator 50: Control panel
70: Crimp terminal 80: Ground guide

Claims (12)

In the electricity detection and grounding device for transmission cables for performing detection and grounding of the transmission cable provided in the transmission line of the steel tower,
A body part that extends in the longitudinal direction and whose length can be adjusted;
An detection unit provided in the body to check whether the transmission cable is live;
A grounding unit installed adjacent to the detection unit and electrically connected to the steel tower to perform grounding work;
a power supply unit provided in the body to supply power to the detection unit and the grounding unit; and an operation unit connected to the power supply unit to control operations of the detection unit and the grounding unit. In claim 1,
The body part has a hollow rod shape and the electric wire connected to the power supply unit is accommodated therein. In claim 1,
Detection and grounding device for a power transmission cable, characterized in that the detection unit and the grounding unit are integrally coupled to the body to sequentially perform detection and grounding operations. In claim 1,
The detection unit is connected to the power supply unit to indicate the live state with a sound when the transmission cable is live, and includes an detector connected to an insulating rod. In claim 1,
The grounding unit is,
A motor connected to a power supply and driven;
An arm that moves forward and backward by the driving force of the motor and has a groove formed at the tip; and
A hook coupled to the body and holding the transmission cable together with the arm. In claim 5,
An electric detection and grounding device for a power transmission cable, comprising a driving force conversion member that converts the rotational force of the driving force of the motor into true linear motion of the arm. In claim 6,
An electric detection and grounding device for a power transmission cable, characterized in that the driving force conversion member is a rack and pinion. In claim 6,
An electrical detection and grounding device for a power transmission cable, characterized in that a plurality of ground guides are additionally provided at the lower part of the body portion to accommodate and guide the ground wire. In the electricity detection and grounding device for transmission cables for performing detection and grounding of the transmission cable provided in the transmission line of the steel tower,
A body portion of a telescopic structure including a length adjusting portion capable of extending the length and a length fixing portion;
An detection unit provided in the body to check whether the transmission cable is live;
A grounding unit installed adjacent to the detection unit and electrically connected to the steel tower to ground the grounding wire;
a plurality of ground guides coupled to the body to receive and guide the ground wire;
a power supply unit provided in the body to supply power to the detection unit and the grounding unit; and
An operation unit connected to the power supply unit to control the operation of the detection unit and the grounding unit. In claim 9,
An electric shock and grounding device for a power transmission cable, characterized in that it includes a crimp terminal that detachably couples one end of the grounding wire to the lower part of the body and electrically connects it to the grounding unit. In claim 9,
The grounding unit is a power detection and grounding device for a power transmission cable, characterized in that it additionally includes an indicator light that blinks when the grounding wire is connected to the steel tower and grounding is completed. In claim 9,
An electric shock and grounding device for a power transmission cable, characterized in that the other end of the body part is provided with a handle that can be held by an operator's hand.