KR102285199B1 - Mounting method of ground rod for power pole - Google Patents

Abstract

The present invention relates to a method for installing a ground rod for an electric pole and the objective of the present invention is to provide a method for installing a ground rod for an electric pole, which reduce a grounding resistance by preventing generation of a gap between the grounding rod and a hole while being installed without excavating the ground. According to the present invention, the method comprises: an auxiliary pipe driving step of driving and inserting a driving bit detachably mounted on the bottom of an auxiliary pipe into the ground; a ground pipe cutting step of cutting a predetermined area in the longitudinal direction of the ground pipe; a grounding pipe and grounding wire coupling step of inserting a grounding wire of an electric pole through a hollow part of the grounding pipe and combining the lower end of the grounding wire with the grounding pipe; a grounding pipe and grounding wire insertion step of inserting the grounding pipe to which the grounding wire is coupled into the hollow part of the auxiliary pipe; a grounding reduction material filling step of filling a grounding reduction material by flowing the grounding reduction material into the hollow part of the auxiliary pipe; a water injection step of injecting water into the hollow part of the ground pipe; and an auxiliary pipe removal step of withdrawing the auxiliary pipe from the ground while the upper end of the auxiliary pipe is clamped.

Description

Construction method of ground rod for electric pole {MOUNTING METHOD OF GROUND ROD FOR POWER POLE}

The present invention relates to a method for constructing a grounding rod for an electric pole, and more particularly, to a method for constructing a grounding rod for an electric pole with improved grounding efficiency than a conventional grounding rod when the grounding of the electric pole is performed.

Conventionally, the grounding rod construction method for electric poles is buried in the ground by driving a grounding rod made of an iron rod bonded to a copper layer on the surface with an electric driving machine, and the grounding is performed in the form of electrically coupling the upper end of the grounding rod and the grounding wire of the electric pole.

Looking at the conventional problems of such a method of driving and burying the ground rod in the ground, the conventional problem is that when the ground rod is buried in the ground, there is an empty space between the ground rod and the hole into which the ground rod is inserted. It does not satisfy the ground resistance value.

In particular, when there is an empty space between the ground rod and the hole, if the surface of the ground rod is corroded, there is a problem in that the ground resistance value increases after a certain period of time has elapsed than the ground resistance value at the time of initial construction.

Therefore, in recent years, in order to solve the above problems, a carbon grounding rod, an electrolyte grounding rod, or a cement grounding rod is buried, but the grounding resistance is lowered by putting a grounding reducing material around the carbon grounding rod, the electrolyte grounding rod, or the cement grounding rod.

However, these carbon earthing rods, electrolyte earthing rods, or cement earthing rods have to be excavated into the ground, and excavating without an excavator takes too much time, requires additional labor costs, and there are also spatial restrictions that make it difficult for an excavator to enter. Therefore, there is a problem in that it takes a lot of money to apply it to a place where a single grounding is constructed, such as an electric pole.

Therefore, in the conventional grounding rod construction method for electric poles, it is possible to insert the grounding rod without excavating the ground, but there is a need for a technical solution so that there is no air gap between the grounding rod and the hole so that the grounding resistance can be lowered.

On the other hand, since the conventional ground rod is driven and inserted into the ground with an electric driving machine, there is not enough space between the ground rod and the hole in the ground, so even when filling the grounding reducing material between the ground rod and the hole, the problem is that the filling is not made. there is.

Therefore, the conventional method of constructing a ground rod for electric poles requires a technical solution that can fill a grounding reducing material between the grounding wire and the hole by securing a sufficient space between the grounding wire and the ground hole when using an electric driving machine for grounding.

In addition, since the conventional grounding rod is formed in a form in which a copper layer is formed on an iron rod, only the outer surface on which the copper layer is formed is grounded with the ground.

Therefore, in the conventional grounding rod, when the grounding resistance is not measured below a predetermined required value, it is necessary to increase the area in which the grounding rod contacts the earth. To solve this, a plurality of grounding rods are inserted in multiple stages to extend the insertion depth or You have to take the method of inserting it spaced apart.

However, as described above, the method of inserting or spaced apart a plurality of ground rods has a problem of increasing material cost and labor cost.

Therefore, the conventional ground rod construction method for electric poles requires a technical solution that can achieve a ground resistance value lower than the ground resistance value required for the electric pole by securing a larger ground area than the conventional ground rod without inserting a plurality of ground rods.

Republic of Korea Registered Utility Model No. 20-0432449 (2006.12.01 Announcement) Republic of Korea Patent Registration No. 10-1386520 (Announced on April 21, 2014)

The technical problem of the present invention for solving the above problems is to enable construction without excavating the ground, but to prevent the presence of a gap between the ground rod and the hole in the ground so that the grounding resistance can be lowered. is to provide

In addition, another technical task of the present invention is to secure a sufficient space between the grounding wire and the ground hole when using an electric driving machine for grounding, thereby providing a grounding rod construction method for electric poles that can be filled with a grounding reducing material between the grounding wire and the hole is to do

In addition, another technical task of the present invention is to secure a larger ground area than the conventional grounding rod without inserting a plurality of grounding rods to achieve a grounding resistance value lower than the grounding resistance value required for an electric pole. Provide a grounding rod construction method is to do

A ground rod construction method for electric poles for achieving the above technical task includes driving an auxiliary pipe driving step of driving an auxiliary pipe having a driving bit detachably mounted at the bottom and inserting it into the ground; Ground pipe cutting step of cutting a certain area of the ground pipe in the longitudinal direction; A grounding pipe and a grounding wire coupling step of inserting the grounding wire of the electric pole through the hollow part of the grounding pipe and combining the lower end of the grounding wire with the grounding pipe; A grounding pipe and a grounding wire insertion step of inserting the grounding pipe to which the grounding wire is coupled into the hollow inner part of the auxiliary pipe; A grounding reducing material filling step of filling the grounding reducing material by flowing the earthing reducing material into the hollow part of the auxiliary pipe; a water injection step of injecting water into the hollow part of the ground pipe; And, Auxiliary pipe removal step of withdrawing from the ground in a state in which the upper end of the auxiliary pipe is clamped; includes

In this case, the filling step of the grounding reducing material includes a vibrating step of applying vibration to the upper end of the auxiliary pipe; and a grounding reducing material input step of flowing the grounding reducing material mixed with bentonite powder and carbon powder into the hollow part of the auxiliary pipe; It may be formed including

In addition, in the excitation step, in a state in which the funnel is inserted in communication with the upper part of the auxiliary tube, the side of the funnel is vibrated with an electric driving hammer so that the auxiliary tube is excited together with the funnel.

The present invention allows construction without excavating the ground by using an excavator, but because the grounding reducing material containing the powdered bentonite expands and fills so that there is no void between the grounding rod and the hole, the conventional grounding rod driving only It has the effect of lowering the grounding resistance than the method.

In addition, since the present invention inserts a ground pipe and a ground wire inside the auxiliary pipe when using an electric driving machine for grounding, sufficient space is secured between the ground pipe and the ground, and there is an effect that can be easily filled with a reduction material for grounding. .

In addition, the present invention is in contact with the earth in a state in which the inner and outer surfaces of the ground pipe and the outer surface of the ground wire are in contact with the ground reducing material, so that the contact area with the ground increases to a very large range than in the prior art. It is possible to secure a larger grounding area than the conventional grounding rods without inserting two grounding rods, so that it is possible to achieve a grounding resistance value lower than the grounding resistance value required for the electric pole.

1 is a flowchart of a method for constructing a ground rod for electric poles according to an embodiment of the present invention.
Figure 2 is a construction view of the auxiliary pipe driving step shown in Figure 1.
Figure 3 is a construction view of the ground pipe cutting step shown in Figure 1;
Figure 4 is a construction view of the ground pipe and the ground wire coupling step shown in Figure 1;
Figure 5 is a construction view of the ground pipe and ground wire insertion step shown in Figure 1;
6 is a construction view of the filling step of the ground reducing material shown in FIG.
Figure 7 is a construction view of the water injection step shown in Figure 1;
Figure 8 is a construction view of the auxiliary pipe removal step shown in Figure 1;
9 is an exploded perspective view of a ground rod for an electric pole used in a method for constructing a ground rod for an electric pole according to an embodiment of the present invention.
10 is a perspective view of a state in which the ground rod for electric pole shown in FIG. 9 is coupled.
11 is a plan cross-sectional view of a state in which the ground pipe and the ground wire are buried in the ground by the ground rod construction method for electric poles according to an embodiment of the present invention.

Hereinafter, an embodiment for carrying out the present invention will be described with reference to the accompanying drawings, and in this case, when a part "includes" a certain component throughout the specification, this is unless otherwise specifically stated. It is not intended to control other components, but is considered to mean that other components may be further included. In addition, terms such as "...unit" described in the specification mean a unit that processes at least one function or operation when describing electronic hardware or electronic software, and when describing a mechanical device, one part, function, shall be taken to mean a use, a point or a driving element. In the following, the same or similar components will be described using the same reference numerals, and overlapping descriptions of the same components will be omitted.

1 is a flowchart of a method for constructing a ground rod for electric poles according to an embodiment of the present invention. Figure 2 is a construction view of the auxiliary pipe driving step shown in Figure 1. 3 is a construction view of the ground pipe cutting step shown in FIG. 1 . 4 is a construction view of the ground pipe and the ground wire coupling step shown in FIG. 1 . 5 is a construction view of the ground pipe and ground wire insertion step shown in FIG. 1 . 6 is a construction view of the filling step of the ground reducing material shown in FIG. 7 is a construction view of the water injection step shown in FIG. 1 . 8 is a construction view of the auxiliary pipe removal step shown in FIG. 1 . 9 is an exploded perspective view of a ground rod for an electric pole used in a method for constructing a ground rod for an electric pole according to an embodiment of the present invention. 10 is a perspective view of a state in which the ground rod for electric pole shown in FIG. 9 is coupled. 11 is a plan cross-sectional view of a state in which a ground pipe and a ground wire are buried in the ground by the method of constructing a ground rod for an electric pole according to an embodiment of the present invention.

1 to 10, the ground rod construction method for an electric pole according to an embodiment of the present invention includes an auxiliary pipe driving step (S10), a ground pipe cutting step (S20), a grounding pipe and a grounding wire coupling step (S30) , a ground pipe and ground wire insertion step (S40), a ground reducing material filling step (S50), a water injection step (S60), and an auxiliary pipe removal step (S70).

In the auxiliary pipe driving step (S10), the driving bit 2 is detachably mounted at one end and the auxiliary pipe 1 is driven and inserted into the ground. In this case, the driving bit (2) is formed so that the lower end to be embedded in the ground is formed in a conical pointed shape, the upper end is formed so that the insertion hole is inserted into the inner hollow of the auxiliary tube (1). Here, the auxiliary pipe (1) on which the driving bit (2) is mounted on the lower end is driven at the upper end by the electric driving machine (3) which reciprocates and applies a strong impact by reciprocating a certain stroke by the auxiliary pipe driving step (S10) and is on the ground By piercing, a hole is formed in the earth. The auxiliary pipe 1, which is driven into the ground by such an auxiliary pipe driving step (S10), forms a state in which soil on the ground is not introduced by the inner hollow part. On the other hand, before the auxiliary pipe driving step (S10), so that the auxiliary pipe 1 does not protrude to the upper part of the ground, the operator may use a shovel to dig the ground to some depth.

In the ground pipe cutting step (S20), a predetermined area is cut in the longitudinal direction of the ground pipe 4 to form a cut-out hole 4a in the longitudinal direction of the ground pipe 4 . The ground pipe cutting step (S20) may be cut using an electric grinder or an electrically operated hydraulic cutter. In the ground pipe 4 formed by the ground pipe cutting step (S20), a ground reducing material 6 to be described later is put into each of the inner and outer periphery sides of the ground pipe 4, and the cut hole 4a is The grounding reducing material 6 is disposed in a state in which the inner periphery side and the outer periphery side are in contact with each other. Here, the ground tube 4 may be formed of a conductive metal material such as copper. However, in the present invention, the material of the ground tube 4 is not limited to copper, and it can be changed to various conductive metal materials. Of course you can.

In the ground pipe and ground wire coupling step (S30), the ground wire 5 of the electric pole is inserted through the hollow part of the ground pipe 4 and the lower end of the ground wire 5 is combined with the ground pipe 4 . Here, the ground wire 5 is electrically connected to the ground of the electric pole and extends to the bottom of the ground where the electric pole is buried, and a partial area from the whole to the ground is insulated by the covering wire. In addition, the connection between the ground wire 5 and the ground tube 4 is performed by pressing the lower end of the ground tube 4 with a presser in a state in which the ground wire 5 is inserted into the ground tube 4 to perform compression bonding, or use gunpowder. It is possible to form a coupling portion (4b) at the lower end of the ground pipe (4) by combining using fusion splicing or heat welding using an oxygen welding machine. By this ground pipe and ground wire coupling step (S30), the total ground area of the ground rod construction method for electric pole according to an embodiment of the present invention is the surface of the ground wire 5, the inner peripheral surface of the ground pipe 4, and The surface of the outer periphery of the ground pipe 4 is increased by the sum of the area.

In the ground pipe and ground wire insertion step (S40), the ground pipe 4 to which the ground wire 5 is coupled is inserted into the hollow inside of the auxiliary pipe 1 so that the coupling part 4b faces the lower part of the auxiliary pipe 1 will do Here, since the auxiliary pipe 1 is inserted into the ground by the above-described auxiliary pipe driving step (S10), in the ground pipe and ground wire insertion step (S40), the ground pipe 4 and the ground wire 5 are connected to the auxiliary pipe ( 1) It is possible to mount the grounding tube 4 and the grounding wire 5 under the ground only by inserting the inside.

In the earthing reducing material filling step (S50), the earthing reducing material 6 is filled by flowing the earthing reducing material 6 into the hollow part of the auxiliary pipe 1 .

In the case of this embodiment, the grounding reducing material filling step (S50) may be configured to include an excitation step (S51) and a grounding reducing material inputting step (S52).

In the excitation step (S51), the vibration is applied to the upper end of the auxiliary pipe (1). In the case of this embodiment, in the excitation step (S51), the side of the funnel 7 is vibrated with an electric driving machine in a state in which the funnel 7 is inserted into the upper part of the auxiliary pipe 1 in communication with the funnel 7 to assist with the Let the tube (1) be excited. Here, the funnel 7 is formed in a cylindrical shape so that the upper part and the lower part communicate with each other, and the inner diameter is expanded from the lower part to the upper part. In addition, the funnel 7 is formed with a protruding side protrusion so as to be detachably coupled with the rod of the electric driving machine 3 on the side. Since this excitation step (S51) works by using a driving hammer for driving the auxiliary pipe (1) in the auxiliary pipe driving step (S10), it is possible to work without a separate tool for excitation.

In the grounding reducing material input step (S52), the grounding reducing material 6 in which bentonite powder, carbon powder, and cement are mixed is flowed into the hollow part of the auxiliary pipe 1 . Here, the weight ratio of bentonite powder, carbon powder, and cement may consist of 30% by weight of bentonite powder, 40% by weight of carbon powder, and 30% by weight of cement. However, in the present invention, the weight ratio of bentonite powder, carbon powder, and cement is not limited to the above example, and the weight ratio of bentonite powder, carbon powder, and cement may be variously modified depending on the composition of the soil. In this case, in the grounding reducing material input step (S52), since the funnel and the auxiliary pipe (1) are excited with a strong impact by the excitation step (S51), the auxiliary pipe (1) without the grounding reducing material 6 being clogged. It is very easily inserted into the inside of the Such a grounding reducing material 6 fills the inner and outer surfaces of the grounding tube 4 and the outer surface of the grounding wire 5, thereby forming a state in which the grounding tube 4 and the grounding wire 5 are conductive to the earth. .

In the water injection step (S60), water is injected into the hollow part of the ground pipe (4). In this water injection step (S60), the grounding reducing material 6 filled in the auxiliary pipe 1 is in a state wet with water, and the bentonite mixed in the grounding reducing material 6 contains moisture and expands. will do

In the auxiliary pipe removal step (S70), the upper end of the auxiliary pipe 1 is pulled out from the ground in a clamped state. Considering that, the auxiliary pipe 1 can be removed by using a winch or the like in a clamped state. When this auxiliary pipe removal step (S70) proceeds and the auxiliary pipe 1 is removed, the ground wire 5 coupled to the ground pipe 4 is filled with the grounding reducing material 6 on the inside and outside of the water. By expanding to the earth side by bentnite containing

Next, after the auxiliary pipe removal step (S70) is performed, the operator measures the grounding resistance, and if the grounding resistance is less than the required level, backfilling the upper part of the grounding pipe 4 will proceed with

In the state where each step as described above is completed, the grounding reducing material 6 surrounding the grounding pipe 4 and the grounding wire 5 expands over time and presses the grounding pipe 4 and the grounding wire 5 At the same time, it expands while pressing around the hall of the earth.

In this way, the grounding rod construction method for electric poles according to an embodiment of the present invention allows construction without excavating the ground using an excavator, but the grounding reducing material 6 containing bentonite in powder form is provided with the grounding rod and the hole Since it expands and fills the gap so that there is no gap therebetween, it is possible to lower the grounding resistance than the conventional method of driving only the grounding rod.

In addition, since the grounding rod construction method for electric poles according to an embodiment of the present invention inserts the grounding tube 4 and the grounding wire 5 inside the auxiliary tube 1 when using the electric driving machine 3 for grounding, the grounding tube A sufficient space is secured between (4) and the ground, so that the grounding reducing material can be easily filled.

Furthermore, the ground rod construction method for electric poles according to an embodiment of the present invention is in contact with the ground in a state where the inner surface and the outer surface of the ground pipe 4 and the outer surface of the ground wire 5 are in contact with the ground reducing material 6, Since the contact area with the ground increases in a very large range, it is possible to secure a larger ground area than the conventional grounding rod without inserting a plurality of grounding rods as in the prior art. be able to

Specifically, the grounding rod construction method for electric poles according to an embodiment of the present invention can secure a grounding area at least twice or more than that of a conventional method of driving only the grounding rods at the same depth.

As described above, the present invention has been described with specific matters such as specific components and limited embodiments and drawings, but these are provided to help a more general understanding of the present invention, and the present invention is not limited to the above embodiments. , various modifications and variations are possible from these descriptions by those of ordinary skill in the art to which the present invention pertains.

Therefore, the spirit of the present invention should not be limited to the described embodiments, and not only the claims to be described later, but also all those with equivalent or equivalent modifications to the claims will be said to belong to the scope of the spirit of the present invention. .

1: Assistant officer 2: Driving beat
3: electric steerer
4: ground tube 5: ground wire
6: earthing reducing material 7: funnel

Claims (3)

Auxiliary pipe driving step (S10) of driving and inserting the auxiliary pipe (1) detachably mounted at the bottom of the driving bit (2) into the ground;
Ground pipe cutting step (S20) of cutting a certain area in the longitudinal direction of the ground pipe (4);
A ground pipe and ground wire coupling step (S30) of inserting the ground wire (5) of the electric pole through the hollow part of the ground pipe (4) and coupling the lower end of the ground wire (5) with the ground pipe (4);
a ground pipe and ground wire insertion step (S40) of inserting the ground pipe (4) to which the ground wire (5) is coupled into the hollow inside of the auxiliary pipe (1);
A grounding reducing material filling step (S50) of filling the grounding reducing material 6 by flowing the earthing reducing material 6 into the hollow part of the auxiliary pipe (1);
a water injection step (S60) of injecting water into the hollow part of the ground pipe (4); and,
Auxiliary pipe removal step (S70) of withdrawing from the ground in a state in which the upper end of the auxiliary pipe (1) is clamped; includes,
The filling step (S50) of the grounding reducing material includes an excitation step (S51) of applying vibration to the upper end of the auxiliary pipe (1); and a grounding reducing material input step (S52) of flowing the grounding reducing material (6) in which bentonite powder and carbon powder are mixed into the hollow part of the auxiliary pipe (1); is formed, including
In the excitation step (S51), the side of the funnel 7 is vibrated with an electric driving hammer in a state in which the funnel 7 is inserted in communication with the upper part of the auxiliary pipe 1, and the funnel 7 together with the funnel 7 A ground rod construction method for electric poles, characterized in that the auxiliary pipe (1) is excited.
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