KR20200005231A - Grounding apparatus for powre transmission line - Google Patents

Abstract

The present invention relates to a grounding device for power transmission lines which is installed in a transmission tower. The grounding device for power transmission lines comprises a first clamping unit, a second clamping unit, a grounding wire, an insulation wire, and a handle. The first clamping unit includes a spring and clamps the power transmission lines by using restoration force of the spring. The second clamping unit includes a clamp screw and clamps the transmission tower in a clamp method using the clamp screw. The ground wire electrically connects the first clamping unit to the second clamping unit. The insulation wire is connected with the first clamping unit. The handle is connected with the first clamping unit through the insulation wire.

Description

Grounding Device for Transmission Lines {GROUNDING APPARATUS FOR POWRE TRANSMISSION LINE}

The present invention relates to a grounding apparatus for a transmission line, and more particularly, to a grounding apparatus for a transmission line that can perform a more stable and easy grounding operation on the transmission line.

In general, when working near a power transmission line or a line that has a truce, grounding devices are installed at both sides of the truce section in order to prevent an electric shock accident by an induced voltage. The grounding device is installed for the purpose of securing safety and protecting the facility, and the grounding device performs the function of grounding by connecting the wires of the transmission line side and the ground side.

On the other hand, when the grounding device is installed on the transmission line by the clamp method, the degree of clamping of the grounding device to the transmission line may vary depending on the worker's work ability. Therefore, when the clamp of the grounding device is loosely fastened to the power transmission line, a phenomenon may occur in which the clamp of the grounding device falls off from the power transmission line over time. In this case, not only the grounding function of the grounding device is lost, but there is a possibility that an electric shock accident of an operator may occur due to the grounding device being dropped from the power transmission line.

An object of the present invention is to provide a grounding apparatus for a transmission line that can be stably grounded to the transmission line.

In order to achieve the above object of the present invention, a grounding apparatus for a transmission line installed in a transmission tower includes a first clamping portion, a second clamping portion, a grounding wire, an insulated wire, and a handle. The first clamping part includes a spring to clamp the power transmission line using a restoring force of the spring. The second clamping part clamps the transmission tower by a tightening method using the fastening screw including a fastening screw. The ground wire electrically connects the first clamping portion to the second clamping portion. The insulating wire is connected to the first clamping part. The handle is connected to the first clamping portion through the insulation wire.

In one embodiment of the present invention, the first clamping portion further includes a support shaft, a seating portion, a support portion, a first clamp. The support shaft is surrounded by the spring, and the support shaft defines a fastening hole to which the insulating wire is fixed. The seating portion is coupled to the support shaft to be in contact with the spring, and the seating portion defines a round-shaped seating groove for receiving the transmission line. The support portion defines a hole through which the support shaft passes. The first clamp is coupled with the support to clamp the transmission line seated on the seating part together with the seating part. In addition, the spring is located between the support and the seating portion to surround the support shaft.

In one embodiment of the invention, the ground wire is electrically connected to the first clamp.

In one embodiment of the present invention, the second clamping portion further includes a handle portion, a tightening portion, and a second clamp. The handle portion is coupled to one end of the tightening screw. The tightening portion is coupled to the other end of the tightening screw. The second clamp clamps a portion of the transmission tower together with the fastener.

In one embodiment of the invention, the ground wire is electrically connected to the second clamp.

In one embodiment of the invention, the grounding device for the transmission line And a housing disposed between the first clamping portion and the handle to accommodate the insulation wire.

In one embodiment of the invention, the housing comprises at least two sub-housings having different sizes. The sub-housings are coupled in a foldable manner in which a smaller one of the two sub-housings adjacent to each other is received into the larger sub-housing.

In one embodiment of the invention, the grounding device for the transmission line further comprises a wire coupling. The wire coupling part is fixed to the outside of the housing, and the wire coupling part is coupled to the ground wire to fix the ground wire to the housing.

In one embodiment of the present invention, the grounding device for the transmission line further includes a guide roller, a locking roller, a locking latch and a locking operation portion. The guide roller is accommodated in the housing, and the guide roller winds the insulation wire. The locking roller is disposed adjacent to the roller to wind the insulating wire, and the locking roller has a latch. The locking latch is fastened to the latch to lock the rotation of the locking roller. The locking operation portion is connected to the locking clasp and positioned outside the housing, and the locking operation portion controls the movement of the locking clasp.

According to the grounding device for a transmission line according to the present invention, the operator can be clamped to the clamping portion of the grounding device spaced apart from the power transmission line by the length of the insulating housing. Therefore, the accident of the electric shock to the worker during the operation of clamping the transmission line to the grounding device can be significantly reduced.

In addition, the operator can clamp the transmission line by opening a portion where the transmission line is clamped only by pulling the handle of the grounding device. Therefore, the transmission line can be clamped securely to the clamping part of the grounding device regardless of the skill of the operator, and the grounding device is dropped from the power supply line, thereby preventing safety accidents and losing the original effect of the grounding device. have.

1 and 2 are side views of a grounding apparatus for a transmission line according to an embodiment of the present invention.
3 and 4 are side views showing that the second clamping unit shown in FIG. 1 is clamped to the transmission tower steel structure.
5 is a side view of a grounding apparatus for a transmission line according to another embodiment of the present invention.

Hereinafter, the most preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the technical idea of the present invention. . First of all, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used as much as possible even if displayed on different drawings. In addition, in describing the present invention, if it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

1 and 2 are side views of the power line grounding device 100 according to an embodiment of the present invention.

1 and 2, the transmission line grounding device 100 is a device for grounding the transmission line to the steel structure of the transmission tower. In this embodiment, the grounding device 100 includes a first clamping portion 20, a second clamping portion 50, a ground wire W1, an insulated wire 45, a handle 65, a housing 10, and a wire. Couplings 13, 15.

In the grounding device 100, the first clamping unit 20 is a portion for clamping the power transmission line L1, and the first clamping unit 20 uses the restoring force restored after the spring 40 is contracted. Clamp

In this embodiment, the first clamping portion 20 includes a spring 40, a support shaft 24, a seating portion 22, a support portion 23 and a first clamp 21.

One end of the support shaft 24 is connected to the handle 65 via an insulated wire 45. In this embodiment, the first fastening hole 25 may be defined at one end of the support shaft 24, and the insulation wire 45 may be fixed to the first fastening hole 25 to be connected to the support shaft 24. have.

The support 23 is coupled to the support shaft 24. In more detail, a through hole (not shown) is formed in the support 23, and the support shaft 24 is coupled to the support 23 through the through hole. Accordingly, the support shaft 24 is not coupled to the support 23 in a form fixed to the support 23, and the support shaft 24 is formed through the through-hole defined in the support 23 without interfering with the support 23. The first direction DR1 and the reverse direction of the first direction DR1 may be moved.

The seating part 22 is coupled to the other end of the support shaft 24, and the seating part 22 is fixed to the support shaft 24. In the first clamping part 20, the seating part 22 is a part in contact with the power transmission line L1. The surface of the seating part 22 has a round shape recessing groove so as to correspond to the round surface of the power transmission line L1. Can be formed. Therefore, as shown in FIG. 2, when the transmission line L1 is in contact with the seating portion 22, the power transmission line L1 may be accommodated in the round-shaped seating groove of the seating portion 22. The transmission line L1 may be more stably seated on the seating part 22.

The first clamp 21 clamps the transmission line L1 together with the seating portion 22. In this embodiment, the first clamp 21 may have a shape bent to cover the seating portion 22 in combination with the support 23. Therefore, when the first clamp 21 clamps the power transmission line L1 together with the seating part 22, one side of the power transmission line L1 is in contact with the seating part 22, and one side of the power transmission line L1. The other side opposite to is in contact with the first clamp 21.

The spring 40 is located between the support 23 and the seating 22. In addition, the spring 40 is coupled to the support shaft 24 in a form surrounding the support shaft 24. Therefore, when the support shaft 24 is moved in the first direction DR1 by pulling the handle 65 in the first direction DR1, the distance between the seating part 22 and the support part 23 becomes small, and the spring 40 ) Is contracted. In addition, when the force pulling the handle 65 in the first direction DR1 is released, the contracted spring 40 may be restored.

In the grounding device 100, the second clamping part 50 may clamp the steel structure of the transmission tower, and the second clamping part 50 may clamp the steel structure of the transmission tower by a tightening method using a tightening screw 53. .

In this embodiment, the second clamping portion 50 includes a tightening screw 53, a handle portion 54, a tightening portion 52 and a second clamp 51.

Tightening screw 53 has the shape of a rod extending in one direction. In addition, a thread and a screw groove are formed on the outer surface of the tightening screw 53. The tightening screw 53 is coupled to the second clamp 51 in a form penetrating the second clamp 51.

In more detail, a through hole (not shown) is formed in the second clamp 51, and a thread and a screw groove for fastening with the tightening screw 53 are formed in the inner circumference of the through hole. Therefore, the tightening screw 53 is coupled to the second clamp 51 by passing through the screw hole of the second clamp 51, the thread and the screw groove of the outer circumference of the tightening screw 53 and the second clamp 51 The tightening screw 53 may be coupled to the second clamp 51 in such a manner that the threads and the thread grooves of the inner circumference of the through hole of the c) are coupled to each other.

The handle portion 54 is coupled to one end of the tightening screw 53, and the tightening portion 52 is coupled to the other end of the tightening screw 53. Therefore, the operator can rotate the tightening screw 53 by using the handle portion (54). In addition, when the tightening screw 53 rotates, the tightening screw 53 and the tightening portion 52 coupled thereto are moved in the first direction DR1 to tighten the tightening portion 52 and the second clamp 51. The steel structure of the transmission tower located between the upper ends of the can be clamped.

The ground wire W1 electrically connects the first clamping part 20 to the second clamping part 50. In this embodiment, the ground wire W1 may be a shielded wire, and the covering is removed at both ends of the ground wire W1 so that the first binding portion W2 and the second binding portion are connected to the ground wire W1. Part W3 may be defined.

In this embodiment, the first binding portion W2 may be welded to the outside of the first clamp 21, and the second binding portion W3 may be welded to the outside of the second clamp 51.

The insulation wire 45 connects the first clamping portion 20 to the handle 65. More specifically, one end of the insulating wire 45 is fixed to the first fastening hole 25 defined in the support shaft 24, the other end of the insulating wire 45 is fixed to the handle 65 2 fastening hole 62 is fixed to the connection portion 61 is formed.

Therefore, when the handle 65 is gripped and the handle 65 is pulled in the first direction DR1, a force for pulling the handle 65 may be transmitted to the support shaft 24 through the insulating wire 45. .

The housing 10 is disposed between the first clamping portion 20 and the handle 65 to receive the insulation wire 45, and the material of the housing 10 may include an insulation material such as plastic.

In this embodiment, the housing 10 may include a plurality of sub-housings, and the plurality of sub-housings are collapsible in which the smaller one of the two sub-housings adjacent to each other is housed inside the large sub-housing. Can be combined.

In more detail, the housing 10 includes a first sub-housing H1, a second sub-housing H2, and a third sub-housing H3, and the first to third sub-housings H1, H2, In the unfolded state H3), the first to third sub-housings H1, H2, and H3 may be sequentially disposed in the first direction DR1.

In this embodiment, the lengths of the first sub-housing H1, the second sub-housing H2, and the third sub-housing H3 in the first direction DR1 may be the same, but the first sub-housing H1 may be the same. ) May be smaller than the width of the second sub-housing H2, and the width of the second sub-housing H2 may be smaller than the width of the third sub-housing H3.

Accordingly, as shown in FIG. 5, the first and second sub-housings H1 and H2 are coupled in a foldable manner in such a manner that the first sub-housing H1 is received into the second sub-housing H2. Can be. In addition, the first to third sub-housings H1, H2, and H3 are foldable in such a manner that the first sub-housing H1 and the second sub-housing H2 are accommodated into the third sub-housing H3. May be combined.

Wire couplings 13 and 15 are coupled to the outside of the housing 10. In this embodiment, the wire coupling parts 13 and 15 are fixed to the first sub housing H1 and the second sub housing H2 in one-to-one correspondence.

In this embodiment, each of the wire coupling portions 13 and 15 may have a ring structure having one side open. Thus, in the lateral direction of the housing 10, the ground wire W1 is drawn into the respective open portions of the wire coupling portions 13 and 15 to couple the ground wire W1 to the wire coupling portions 13 and 15. Can be.

Meanwhile, a method of clamping the power transmission line L1 to the first clamping part 20 of the grounding device 100 having the above-described structure is as follows.

The worker grips the handle 65 and pulls the handle 65 in the first direction DR1. The connection part 62 fixed to the handle 65 is also pulled in the first direction DR1 by the force to pull the handle 65.

As a result, as shown in FIG. 1, the connecting portion 62 is received inside the housing 10 before the handle 65 is pulled in the first direction DR1, but as shown in FIG. 2. After pulling 65 in the first direction DR1, the connecting portion 62 is drawn out of the housing 10.

On the other hand, as described above, since the handle 65 is connected to the support shaft 24 through the insulated wire 45, the support shaft 24 by the force to pull the handle 65 in the first direction DR1. ) Is moved in the first direction DR1.

In addition, the support shaft 24 is coupled to the support 23 in a shape penetrated with the support 23. Therefore, the distance between the support part 23 and the seating part 22 is reduced by the movement of the support shaft 24 in the first direction DR1, and the spring 40 is contracted in the first direction DR1, instead. The gap between the first clamp 21 and the seating portion 22 opens.

In a state where the gap between the first clamp 21 and the seating portion 22 is opened, the operator maintains a force for pulling the handle 65 and the power transmission line (B) between the first clamp 21 and the seating portion 22. Insert L1). After that, when the worker releases the force to pull the handle 65, the transmission line L1 between the first clamp 21 and the seating portion 22 by the restoring force to restore the spring 40 to its original shape. ) Can be clamped.

Meanwhile, when the transmission line L1 is clamped to the first clamping unit 20 as described above, the operator may perform the clamping operation by being spaced apart from the transmission line L1 by the length of the housing 10 having an insulating property. . In addition, since the operator can easily clamp the power transmission line L1 to the first clamping portion 20 by operating the handle 65, the power transmission line L1 to the first clamping portion 20 regardless of the skill of the operator. This can be clamped.

Therefore, according to the present invention, an accident in which the worker is electric shock from the power transmission line (L1) can be significantly reduced. In addition, the effect that the clamping operation is simplified in the transmission line (L1) can be produced, and the grounding device can be firmly clamped to the transmission line regardless of the operator's skill.

3 and 4 are side views showing that the second clamping unit shown in FIG. 1 is clamped to the transmission tower steel structure.

Referring to FIG. 3, the horizontal portion 8 of the steel structure 5 of the transmission tower is positioned between the second clamp 51 and the fastening portion 52. After that, the operator rotates the handle portion 54 in one rotational direction after holding the handle portion 54.

Referring to FIG. 4, when the handle part 54 is rotated in one rotation direction, the tightening screw 53 and the tightening part 52 fixed thereto are lifted based on the example shown in FIG. 4. As a result, the gap between the upper end of the second clamp 51 and the tightening part 52 gradually decreases, so that the tightening part 52 clamps the horizontal part 8 together with the upper end of the second clamp 51.

In this embodiment, before clamping the transmission line (L1 in FIG. 2) using the first clamping portion (20 in FIG. 2), the horizontal portion 8 of the transmission tower may be clamped using the second clamping portion 50. FIG. Can be.

5 is a side view of a power line grounding device 101 according to another embodiment of the present invention. Meanwhile, in FIG. 5, a part of the third sub housing H3 is cut to clearly show the components disposed in the third sub housing H3.

Referring to FIG. 5, the power line grounding device 101 according to this embodiment may include first to fifth guide rollers R1, R2, R3, R4, and R5 and a locking roller stored in the housing. (R6), locking clasp 70, and locking operation unit 80.

In this embodiment, the first to fifth guide rollers R1, R2, R3, R4, R5 are disposed inside the third sub-housing H3 of the housing. Although the present invention is not limited to the number and arrangement of the guide rollers, according to this embodiment, the first guide roller R1 is positioned at the leading end with respect to the handle 65 and the second to fifth guide rollers R2. , R3, R4, and R5 may be arranged in a zigzag manner from the lower end to the upper end of the third sub-housing H3.

In addition, the insulating wire 45 connected to the support shaft 24 of FIG. 1 of the first clamping part 20 of FIG. 1 is sequentially formed on the first to fifth guide rollers R1, R2, R3, R4, and R5. Wound and guided to the locking roller R6 side.

The locking roller R6 is disposed above the first guide roller R1 to wind the insulated wire 45. In addition, the locking roller (R6) is provided with a latch 70, in this embodiment, the latch 70 is fixed to the rotating shaft of the locking roller (R6) may have a structure of a hook.

The locking clasp 75 is disposed adjacent to the clasp 70, and the locking clasp 75 may be fastened to the clasp 70 in a manner that the clasp 70 is caught by the clasp 70. When the locking clasp 75 and the clasp 70 are coupled to each other in the structure of a hook, it is possible to stop the clasp 70 from being rotated together with the rotation shaft of the locking roller R6 by the locking clasp 75. .

The lock manipulation unit 80 is coupled to the lock clasp 75 and positioned outside the third sub-housing H3. In this embodiment, the lock manipulation unit 80 may have a shape of a lever, and the movement of the lock clasp 75 may be controlled by manipulating the lock manipulation unit 80.

For example, when the locking operation unit 80 is flipped in the second direction DR2, the hook portion of the locking clasp 75 coupled to the locking operation unit 80 is flipped down, so that the locking clasp 75 and the locking clasp. 70, the hook coupling between each other can be released. As a result, the locking roller R6 is rotatable so that the mode of unlocking by the operation of the locking operation unit 80 is realized.

On the other hand, when the locking operation unit 80 is flipped in the direction opposite to the second direction DR2, the hook portion of the locking latch 75 coupled to the locking operation unit 80 is flipped upward, so that the locking latch 75 is provided. And hook coupling between the latch 70 can be implemented. As a result, the rotation of the locking roller R6 is impossible, and the mode of the locked state by the operation of the locking operation unit 80 is realized.

Meanwhile, as described above with reference to FIGS. 1 and 2, the operator pulls the handle 65 to clamp the power transmission line to the first clamping part (20 of FIG. 1) and thus the first clamp (21 of FIG. 1). And the gap between the seating portion (22 in FIG. 1), it is necessary to maintain the gap between the first clamp and the seating portion.

In this case, the operator first pulls the handle 65 in the second direction DR2 so that the handle 65 reaches the end of the handle support 68. As a result, the wire bundle 48 coupled with the insulated wire 45 passing between the third and fourth guide rollers R3 and R4 is moved in the second direction DR2.

Thereafter, the above-described locking operation unit 80 is operated to implement the locked mode. As a result, the rotation of the locking roller R6 is stopped so that the state in which the handle 65 is pulled in the second direction DR2 may be maintained.

On the other hand, as described above, when the handle 65 is pulled in the second direction DR2, the gap between the first clamp 21 of FIG. 1 and the seating portion 22 of FIG. 1 opens. In addition, when the state in which the handle 65 is pulled in the second direction DR2 by operating the lock operation unit 80 in this state is maintained, the first clamp 21 (FIG. 1) and the seating portion (FIG. 1) 22) The gap between the livers can be maintained. As a result, the process of inserting the transmission line between the first clamp and the seating portion can be made easier.

In another embodiment, the hook portion is provided on the outside of the handle 65, the other hook portion is installed on the inside of the handle support 68, and the handle 65 is held so that the handle 65 reaches the handle support 68. FIG. After pulling, the hook portions of the handle 65 and the handle support 68 are coupled to each other so that the pulled state of the handle 65 can be maintained.

Although a preferred embodiment according to the present invention has been described above, modifications can be made in various forms, and those skilled in the art may make various modifications and modifications without departing from the claims of the present invention. It is understood that it may be practiced.

20: first clamping portion 50: second clamping portion
21: first clamp 22: seating portion
23: support portion 24: support shaft
W1: ground wire 10: housing
51: second clamp 52: tightening part
53: Tightening Screw 65: Handle

Claims (9)

In the transmission line grounding device installed in the transmission tower,
A first clamping part including a spring to clamp the transmission line by using the restoring force of the spring;
A second clamping part for clamping a transmission tower by a fastening method using the fastening screw including a fastening screw;
A ground wire electrically connecting the first clamping portion to the second clamping portion;
An insulation wire connected to the first clamping portion; And
And a handle connected to the first clamping part through the insulating wire. The method of claim 1, wherein the first clamping portion,
A support shaft defining a fastening hole to which the insulating wire is fixed;
A seating part coupled to the support shaft to be in contact with the spring, and a seating groove having a round shape receiving the transmission line;
A support portion coupled to the support shaft in a shape through which the support shaft penetrates; And
And a first clamp coupled to the support to clamp the power transmission line seated on the seating part together with the seating part.
And the spring is coupled between the support shaft and the support shaft in a shape located between the support portion and the seating portion to surround the support shaft. The grounding apparatus of claim 2, wherein the ground wire is electrically connected to the first clamp. The method of claim 2, wherein the second clamping portion,
A handle portion coupled to one end of the tightening screw;
A tightening unit coupled to the other end of the tightening screw; And
And a second clamp for clamping a portion of the transmission tower together with the tightening unit. 5. The grounding apparatus of claim 4, wherein the ground wire is electrically connected to the second clamp. The method of claim 1,
And a housing disposed between the first clamping portion and the handle to accommodate the insulated wire. The method of claim 6,
The housing includes at least two sub-housings having different sizes,
And the sub housings are coupled in a folding manner in which a smaller one of two sub housings adjacent to each other is housed inside a large sub housing. The grounding apparatus of claim 6, further comprising a wire coupling part fixed to the outside of the housing and coupled to the ground wire to fix the ground wire to the housing. The method of claim 6,
At least one guide roller which is accommodated in the housing and winds the insulation wire;
A locking roller disposed adjacent to the guide roller to wind the insulating wire and having a latch;
A locking latch fastened to the latch to lock the rotation of the locking roller; And
And a locking operation unit coupled to the locking latch and positioned outside the housing and controlling the movement of the locking latch.

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