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KR20230090670A - Grounding rod for electric pole, Device and Method for installing the same - Google Patents

Grounding rod for electric pole, Device and Method for installing the same Download PDF

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KR20230090670A
KR20230090670A KR1020210179636A KR20210179636A KR20230090670A KR 20230090670 A KR20230090670 A KR 20230090670A KR 1020210179636 A KR1020210179636 A KR 1020210179636A KR 20210179636 A KR20210179636 A KR 20210179636A KR 20230090670 A KR20230090670 A KR 20230090670A
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ground
rod
construction device
grounding
ground rod
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KR102631023B1 (en
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김상신
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한국전력공사
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02GINSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G13/00Installations of lightning conductors; Fastening thereof to supporting structure
    • H02G13/40Connection to earth
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/58Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
    • H01R4/66Connections with the terrestrial mass, e.g. earth plate, earth pin

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Abstract

본 발명은 전주용 접지봉과 그 시공장치 및 시공방법에 관한 것으로, 관형 접지봉의 내부로 시공장치를 삽입하고, 시공장치를 항타하여 접지봉을 지중에 매설한다. 접지봉에 고강성이 필요 없게 되어 접지봉을 저항이 작은 순동 재질로 제작할 수 있고, 시공장치를 항타하여 접지봉을 매설하므로 접지봉을 더욱 깊이 매설할 수 있다.The present invention relates to a grounding rod for an electric pole, a construction device and a construction method thereof, wherein the construction device is inserted into a tubular grounding rod, and the grounding rod is buried in the ground by driving the construction device. Since high rigidity is not required for the grounding rod, the grounding rod can be made of a pure copper material with low resistance, and the grounding rod can be buried more deeply by driving the construction device to bury the grounding rod.

Description

전주용 접지봉과 그 시공장치 및 시공방법{Grounding rod for electric pole, Device and Method for installing the same}Grounding rod for electric pole and its construction device and construction method {Grounding rod for electric pole, Device and Method for installing the same}

본 발명은 전주용 접지봉과 그 시공장치 및 시공방법에 관한 것이다.The present invention relates to a ground rod for an electric pole, a construction device and a construction method thereof.

전주에는 피뢰기, 중성선, 변압기 2차측 등 접지가 필요한 설비들이 있으며, 이들 설비들의 접지선은 하나의 접지선에 연결되어 지하에 매설된 접지봉에 연결된다. 이러한 전주 접지는 소정의 접지저항값을 만족하도록 규정되어 있으며, 접지저항값을 만족시키기 위해 접지봉의 매설 깊이와 위치 및 매설 개소 수를 달리하여 시공하고 있다.There are facilities that require grounding, such as lightning arresters, neutral wires, and secondary side of transformers, on poles, and the grounding wires of these facilities are connected to one grounding wire and connected to a grounding rod buried underground. This pole grounding is regulated to satisfy a predetermined grounding resistance value, and construction is performed by varying the burial depth and location of the ground rod and the number of burial points in order to satisfy the grounding resistance value.

종래에는 접지봉을 (전동)브레이커로 직접 타격하여 지중으로 삽입하였다. 또한 이때 접지저항 감소 및 동결심도 만족을 위해 지면을 약 0.75m 이상 굴착하고, 접지봉을 타격하여 박아 넣은 후 접지봉(의 리드선)과 접지선을 연결하였다. 그리고 파낸 흙을 되메우기하여 전주 접지 공사를 마무리하였다.Conventionally, the ground rod was directly hit with a (electric) breaker and inserted into the ground. In addition, at this time, in order to reduce the ground resistance and satisfy the depth of freezing, the ground was excavated at least about 0.75 m, the ground rod was struck and driven in, and then the ground rod (lead wire) and the ground wire were connected. Then, the excavated soil was backfilled to complete the grounding work for Jeonju.

그런데 종래의 접지봉은 강봉 표면에 구리(Cu)를 도금한 것으로 강성이 부족하여 항타시 쉽게 변형됨으로서 깊이 매설하기가 곤란하였다.However, conventional ground rods are plated with copper (Cu) on the surface of steel rods, and are easily deformed during driving due to lack of rigidity, making it difficult to bury deeply.

또한 지중으로 삽입되면서 흙, 돌 등에 긁혀 표면의 구리층이 벗겨지게 되는데, 이 때문에 접지봉의 자체 저항이 증가하여 규정 접지저항값을 만족시키기 어려웠다.In addition, while being inserted into the ground, the copper layer on the surface is peeled off by being scratched by soil, stones, etc. Because of this, the self-resistance of the grounding rod increases, making it difficult to satisfy the specified grounding resistance value.

또한 구리층이 파괴됨으로써 내부 강재의 산화가 급속도로 이루어지며, 이에 시공 후 2~3년이 경과하면 접지 성능이 상실되어 재시공이 필요하였다.In addition, as the copper layer is destroyed, the internal steel material is rapidly oxidized, and when 2 to 3 years have elapsed after construction, the grounding performance is lost, requiring re-construction.

또한 상기와 같이 접지봉을 깊이 박아 넣기 어려울 뿐만 아니라 접지봉과 접지선의 연결부가 지면 아래에 위치해야 하기 때문에 반드시 지면 굴착이 선행되어야만 하였다.In addition, since it is difficult to drive the ground rod deeply as described above, and the connection part between the ground rod and the ground wire must be located below the ground, ground excavation must be preceded.

대한민국 등록실용신안공보 20-0383498(2005.05.03. 공고)Korean Registered Utility Model Publication No. 20-0383498 (Announced on May 3, 2005)

이에 본 발명은 상기와 같은 문제점을 해결하기 위해 안출된 것으로, 순수 동 재질의 접지봉을 보다 깊이 매설할 수 있게 되고, 이에 접지저항 규정을 만족하기가 용이하며, 접지봉 조기 산화에 따른 재시공이 방지될 뿐만 아니라 굴착이 필요 없는 전주용 접지봉과 그 시공장치 및 시공방법을 제공함에 목적이 있다.Therefore, the present invention has been made to solve the above problems, and it is possible to bury ground rods made of pure copper more deeply, thereby making it easy to satisfy the ground resistance regulations, and to prevent re-work due to premature oxidation of the ground rods. In addition, it is an object of the present invention to provide a ground rod for poles that does not require excavation, a construction device and a construction method thereof.

상기와 같은 목적을 달성하기 위한 본 발명에 따른 접지봉은, 직선형 관 형상으로 형성되고, 순 동 재질로 제작된다.The ground rod according to the present invention for achieving the above object is formed in a straight tubular shape and is made of pure copper.

상기 관의 상부 측면에 리드선이 연결된다.A lead wire is connected to the upper side of the tube.

상기 관의 상단에 또 다른 관의 하단이 삽입될 수 있도록 확관부가 형성된다.An expansion part is formed so that the lower end of another tube can be inserted into the upper end of the tube.

또한, 본 발명에 따른 접지봉 시공장치는, 직선형 관 형상의 접지봉에 삽입되어 뾰족한 형상의 선단부가 접지봉의 하단 외측으로 돌출되는 굴착부와, 상기 굴착부의 상단에 나사 구조로 결합되어 브레이커에 의해 항타되고 상기 접지봉을 밀어주는 항타부를 포함한다.In addition, the grounding rod construction apparatus according to the present invention is inserted into a straight tubular grounding rod and has a pointed tip protruding outward from the lower end of the grounding rod, and is coupled to the upper end of the drilling part by a screw structure and driven by a breaker and a driving part pushing the ground rod.

상기 항타부와 선단부가 뾰족한 굴착부 사이에 연결용 굴착부가 필요한 개수로 연결될 수 있다.A required number of excavation units for connection may be connected between the driving unit and the excavation unit having a sharp tip.

상기 항타부의 외경은 접지봉의 외경보다 크게 형성된다.An outer diameter of the driving portion is larger than an outer diameter of the ground rod.

또한, 본 발명에 따른 접지봉 시공방법은, 접지봉에 시공장치의 굴착부를 삽입하여 시공장치에 접지봉을 결합하는 접지봉과 시공장치 결합단계;In addition, the ground rod construction method according to the present invention includes a ground rod and construction device coupling step of inserting the excavation part of the construction device into the ground rod and coupling the ground rod to the construction device;

상기 시공장치의 항타부를 항타하여 접지봉을 지중에 일부 삽입하는 접지봉 부분삽입단계;A ground rod partial insertion step of partially inserting the ground rod into the ground by driving the driver of the construction device;

상기 시공장치를 분리하고 접지봉에 접지선을 가연결한 후 접지저항을 측정하여 접지저항 규정치를 만족하는지 여부를 판단하는 접지저항 규정치 만족 판단단계;A ground resistance standard value determination step of determining whether or not the ground resistance standard value is satisfied by measuring the ground resistance after separating the construction device and temporarily connecting the ground wire to the ground rod;

상기 접지저항 규정치 만족 판단단계에서 접지저항이 규정치를 만족할 경우 접지봉에 리드선을 연결하는 리드선 연결단계;A lead wire connection step of connecting a lead wire to a grounding rod when the ground resistance satisfies the specified value in the ground resistance determining value satisfaction determination step;

상기 시공장치의 항타부를 항타하여 접지봉을 지중에 완전히 삽입하는 접지봉 완전삽입단계;A ground rod complete insertion step of completely inserting the ground rod into the ground by driving the driver of the construction device;

상기 접지봉에서 시공장치를 분리하여 제거하는 시공장치 분리단계;A construction device separation step of separating and removing the construction device from the ground rod;

상기 리드선의 지면 위쪽 단부에 전주의 접지선을 연결하고, 접지선을 가려주는 보호구를 전주에 설치하는 접지선 연결 및 보호구 설치단계;를 포함한다.It includes a ground wire connection and protective equipment installation step of connecting the ground wire of the electric pole to the upper end of the ground of the lead wire and installing a protective equipment for covering the ground wire to the electric pole.

상기 접지저항 규정치 만족 판단단계에서 측정값이 접지저항 규정치를 만족하지 않으면 선 삽입된 접지봉에 또 다른 접지봉을 연결하여 접지봉의 전체 길이를 연장하고, 상기 시공장치는 선단용 굴착부와 항타부의 사이에 연결용 굴착부를 설치하여 굴착부의 전체 길이를 연장하는 접지봉과 시공장치 길이 연장단계를 실시한다.If the measured value does not satisfy the ground resistance specified value in the ground resistance standard satisfaction determination step, another ground rod is connected to the wire-inserted ground rod to extend the entire length of the ground rod, and the construction device is between the excavation part for the tip and the driving part. By installing the excavation part for connection, a grounding rod extending the entire length of the excavation part and the length extension step of the construction device are performed.

상기 시공장치 분리단계 이후에 접지저항저감제를 물과 혼합하여 시공장치를 제거한 홀 내부로 부어 넣는 접지저항저감제 주입단계를 더 실시할 수 있다.After the separation of the construction device, a ground resistance reducing agent injection step may be further performed in which the ground resistance reducing agent is mixed with water and poured into the hole from which the construction device is removed.

이상 설명한 바와 같은 본 발명에 따르면, 또한 고강성의 시공장치에 접지봉을 결합하고 시공장치를 타격하여 접지봉을 매설함으로써 접지봉을 필요한 만큼 깊이 매설할 수 있게 된다.According to the present invention as described above, it is also possible to bury the grounding rod as deeply as necessary by coupling the grounding rod to the high-rigidity construction device and burying the grounding rod by hitting the construction device.

또한 동일한 이유에 의해 접지봉 자체는 고강성을 갖출 필요가 없음으로써 접지봉을 순수 구리 재질로 제작할 수 있게 된다.Also, for the same reason, the grounding rod itself does not need to have high rigidity, so that the grounding rod can be made of pure copper.

따라서 접지봉 매설시 접지저항 규정을 만족하기가 용이하다.Therefore, it is easy to satisfy the ground resistance regulation when burying the ground rod.

또한 순수 구리 재질의 접지봉은 항타중 표면층이 다소 손상되어도 강 재질을 포함하고 있지 않으므로 산화에 따른 접지봉 기능 상실 문제가 발생하지 않으며, 이에 접지봉을 재시공할 필요가 없게 된다.In addition, since the grounding rod made of pure copper does not contain steel even if the surface layer during driving is slightly damaged, there is no problem of loss of function of the grounding rod due to oxidation, and thus there is no need to re-construct the grounding rod.

또한 상기 시공장치 사용으로 인해 리드선이 결합된 상태의 접지봉을 지면 아래쪽으로 박아 넣을 수 있게 됨으로써 접지봉 타격 전에 미리 굴착을 해 놓을 필요가 없게 된다. 즉, 접지봉의 무굴착 시공이 가능하다.In addition, due to the use of the construction device, it is possible to drive the ground rod in a state in which the lead wire is coupled to the ground below, so that there is no need to excavate in advance before hitting the ground rod. That is, non-drilling construction of the ground rod is possible.

도 1의 (a),(b),(c)는 각각 본 발명에 따른 접지봉, 시공장치, 접지봉과 시공장치의 사용 상태를 도시한 도면.
도 2의 (a),(b),(c)는 각각 길이 연장형 접지봉과 시공장치 및 이들의 사용 상태를 도시한 도면.
도 3의 (a),(b)는 상기 접지봉의 수직 매설 상태를 도시한 도면.
도 4의 (a),(b)는 상기 접지봉의 경사 매설 상태를 도시한 도면.
도 5는 본 발명에 따른 접지봉 시공방법의 순서도.
Figure 1 (a), (b), (c) is a view showing the state of use of the ground rod, construction device, ground rod and construction device, respectively, according to the present invention.
Figure 2 (a), (b), (c) is a view showing a length-extended ground rod and a construction device and their use state, respectively.
Figure 3 (a), (b) is a view showing the vertical buried state of the ground rod.
Figure 4 (a), (b) is a view showing the obliquely buried state of the ground rod.
5 is a flow chart of a ground rod construction method according to the present invention.

본 발명은 다양한 변경을 가할 수 있고 여러 가지 실시예를 가질 수 있는 바, 특정 실시예들을 도면에 예시하고 상세하게 설명하고자 한다. 그러나, 이는 본 발명을 특정한 실시 형태에 대해 한정하려는 것이 아니며, 본 발명의 사상 및 기술 범위에 포함되는 모든 변경, 균등물 내지 대체물을 포함하는 것으로 이해되어야 한다. 첨부된 도면에 도시된 선들의 두께나 구성요소의 크기 등은 설명의 명료성과 편의를 위해 과장되게 도시되어 있을 수 있다.Since the present invention can make various changes and have various embodiments, specific embodiments are illustrated in the drawings and described in detail. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. The thickness of lines or the size of components shown in the accompanying drawings may be exaggerated for clarity and convenience of description.

또한, 후술되는 용어들은 본 발명에서의 기능을 고려하여 정의된 용어들로서 이는 사용자, 운용자의 의도 또는 판례에 따라 달라질 수 있다. 그러므로 이러한 용어들에 대한 정의는 본 명세서 전반에 걸친 내용을 토대로 하여 내려져야 할 것이다.In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to the intention of a user or operator or a precedent. Therefore, definitions of these terms should be made based on the contents throughout this specification.

이하, 본 발명에 따른 바람직한 실시예를 첨부된 도면을 참조하여 상세하게 설명한다.Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

도 1(a)와 같이, 본 발명에 따른 접지봉(1)은 단순 직선형 원형관 형태를 가진다.As shown in FIG. 1 (a), the ground rod 1 according to the present invention has a simple straight circular tube shape.

또한 접지봉(1)은 순수 동(CU) 재질로 제작된다. 이는 접지저항값을 감소시켜 접지저항 규정치를 만족시키는데 도움을 준다.In addition, the ground rod 1 is made of pure copper (CU) material. This reduces the ground resistance value to help satisfy the ground resistance regulation value.

접지봉(1)의 상단부 측면에는 리드선(2)이 연결될 수 있다. 리드선(2)은 전주에서 내려오는 접지선과 연결(압착 슬리브 사용)을 용이하게 하기 위해 구비되는 것으로 용접, 슬리브 압착, 나사 조임형 클램프 등을 이용하여 접지봉(1)에 연결될 수 있다.A lead wire 2 may be connected to the upper side of the ground rod 1 . The lead wire 2 is provided to facilitate connection (using a compression sleeve) with the ground wire coming down from the pole, and can be connected to the ground rod 1 using welding, sleeve compression, screw clamping, or the like.

도 1(b)와 같이, 본 발명에 따른 시공장치(10)는 끝부분이 뾰족하고 전체적으로 직선 형상으로 이루어진 굴착부(11)와, 굴착부(11)의 상단에 결합되는 항타부(12)를 포함한다.As shown in FIG. 1 (b), the construction apparatus 10 according to the present invention has an excavation part 11 having a sharp end and a generally straight shape, and a driving part 12 coupled to the upper end of the excavation part 11 includes

굴착부(11)는 상기 접지봉(1)의 내경보다 미세하게 작은 외경을 가짐으로써 접지봉(1)의 내부로 쉽게 삽입될 수 있으면서도 접지봉(1)이 땅에 박힐 때 외부에서 오는 압력에 대항하여 접지봉(1)의 변형을 방지할 수 있도록 되어 있다.The excavation part 11 has an outer diameter that is slightly smaller than the inner diameter of the ground rod 1, so that it can be easily inserted into the ground rod 1 while resisting the pressure coming from the outside when the ground rod 1 is driven into the ground. The deformation of (1) can be prevented.

굴착부(11)는 접지봉(1)에 완전히 삽입되었을 때 단부의 뾰족한 부분이 접지봉(1)의 외측으로 돌출될 수 있는 길이를 가진다(도 1(c) 참조).When the excavation part 11 is completely inserted into the ground rod 1, the pointed part of the end has a length that can protrude outward from the ground rod 1 (see FIG. 1(c)).

굴착부(11)와 항타부(12)는 서로 나사 결합된다. 굴착부(11)의 상단에 수나사부가 형성되고, 항타부(12)의 하단에 암나사홀이 형성되어 서로 나사 체결된다.The excavation part 11 and the driving part 12 are screwed together. A male screw part is formed at the upper end of the excavation part 11 and a female screw hole is formed at the lower end of the driving part 12 to be screwed together.

항타부(12) 역시 직선 원기둥 형상이며, 단 그 직경은 상기 접지봉(1)의 외경보다 미세하게 큰 정도(2~3mm)이다. 따라서 굴착부(11)의 외주에 접지봉(1)이 끼워졌을 때 접지봉(1)의 상단면 전체가 항타부(12)의 하단면에 접촉될 수 있으며, 이로써 시공장치(10)를 항타하여 굴착부(11)가 땅 속으로 박힐 때 항타부(12)가 접지봉(1)을 안정적으로 밀어주어 함께 땅 속으로 박혀 들어갈 수 있게 된다.The driving portion 12 is also a straight cylinder shape, provided that its diameter is slightly larger (2 to 3 mm) than the outer diameter of the ground rod 1. Therefore, when the ground rod 1 is inserted into the outer circumference of the excavation unit 11, the entire upper surface of the ground rod 1 can come into contact with the lower surface of the driving unit 12, thereby driving the construction device 10 to excavate. When the part 11 is driven into the ground, the driving part 12 stably pushes the ground rod 1 so that it can be driven into the ground together.

상기 굴착부(11)와 항타부(12)는 브레이커 등의 항타장치에 의해 직접 타격되어 지면을 뚫고 들어가는 것이므로 고강도의 강재로 제작된다.The excavation part 11 and the driving part 12 are made of high-strength steel because they are directly hit by a driving device such as a breaker to penetrate the ground.

도 2(a)와 같이, 상기 접지봉(1)은 필요에 따라 다수개 연결하여 사용할 수 있다. 이를 위해 접지봉(1)의 상단에는 다른 접지봉(1)의 하단을 삽입할 수 있는 확관부(1a)가 형성된다. 도면에 확관부(1a)를 강조하여 도시하였으나 확관부(1a)는 내경이 접지봉(1)의 외경과 동일하면 되고 그 보다 더 클 필요는 없으며, 특히 외경의 확장은 가급적 작은 것이 지중 삽입에 유리하다.As shown in FIG. 2(a), a plurality of ground rods 1 may be connected and used as needed. To this end, an expansion tube 1a into which the lower end of another ground rod 1 can be inserted is formed at the upper end of the ground rod 1 . Although the expansion part (1a) is shown with emphasis in the drawing, the expansion part (1a) needs to have the same inner diameter as the outer diameter of the grounding rod (1), and it does not need to be larger than that. do.

이와 같이 복수의 접지봉(1)을 연결하여 사용할 때 제일 마지막에 사용되는 접지봉(1)에(최상부 접지봉)만 리드선(2)이 연결된다. 시공 현장에서 필요에 따라 최상부 접지봉(1)에 리드선(2)을 연결할 수 있으나, 리드선(2)이 구비된 접지봉(1)을 따로 준비해두면 보다 신속하고 용이하게 작업을 진행할 수 있음은 물론이다.In this way, when connecting and using a plurality of ground rods 1, the lead wire 2 is connected only to the ground rod 1 used last (top ground rod). Although the lead wire 2 can be connected to the uppermost ground rod 1 as needed at the construction site, if the ground rod 1 equipped with the lead wire 2 is prepared separately, the work can proceed more quickly and easily. Of course.

접지봉(1)의 길이 연장에 따라 시공장치(10)의 길이도 함께 연장되어야 한다. 도 2(b)와 같이, 시공장치(10)에서도 굴착부(11)를 다수개 연결하여 사용할 수 있다. 단 위에 설명한 바와 같이 직접 땅을 뚫고 들어가는 최하부 굴착부(11)는 하단이 뾰족하지만, 그 이후에 연결되는 굴착부(11′)는 하단에 암나사홀이 형성되고 상단에 수나사부가 형성된 구조로 이루어진다.As the length of the ground rod 1 is extended, the length of the construction device 10 should also be extended. As shown in FIG. 2 (b), a plurality of excavation parts 11 may be connected and used in the construction device 10. As described above, the lowermost excavation part 11 that directly penetrates the ground has a sharp bottom, but the excavation part 11' connected thereafter has a structure in which a female screw hole is formed at the bottom and a male screw portion is formed at the top.

따라서 하단부가 뾰족한 최하부 굴착부(11)의 상부에 필요한 만큼 연결용 (11′)를 연결한 후 가장 위쪽에 상기 항타부(12)를 연결하여 시공장치(10)를 구성할 수 있다.Therefore, it is possible to configure the construction device 10 by connecting the connection 11' to the upper part of the lowermost excavation part 11 with a sharp lower end, and then connecting the driving part 12 to the uppermost part.

이와 같이 길이가 연장된 접지봉(1)으로 굴착부(11,11′)를 삽입한 경우에도 최하부 굴착부(11)의 뾰족한 선단부는 최하부 접지봉(1)의 하단으로 돌출된다(도 2(c) 참조).In this way, even when the drilling parts 11 and 11' are inserted into the ground rod 1 with the length extended, the pointed tip of the lowermost drilling part 11 protrudes to the lower end of the lowermost ground rod 1 (FIG. 2(c)). reference).

도 3은 본 발명에 따른 접지봉(1)과 시공장치(10)를 이용하여 전주의 접지 시공을 하는 방식을 설명하는 도면이다. 도시된 바와 같이, 시공장치(10)의 굴착부(11)를 접지봉(1)에 삽입한 상태에서 시공장치(10)의 항타부(12)를 브레이커로 타격해주면, 시공장치(10)는 굴착부(11)를 선두로 하여 지중으로 박혀 들어가게 된다. 따라서 항타부(12)가 접지봉(1)의 후단을 밀어줌으로써 접지봉(1)이 굴착부(11)와 함께 지중으로 삽입된다. 접지봉(1)에 리드선(2)이 구비된 경우 리드선(2)도 접지봉(1)과 함께 땅속으로 삽입된다.Figure 3 is a view explaining a method of grounding construction of electric poles using the ground rod 1 and the construction device 10 according to the present invention. As shown, when the driving part 12 of the construction device 10 is hit with a breaker in a state where the excavation part 11 of the construction device 10 is inserted into the ground rod 1, the construction device 10 excavates With the part 11 as the head, it is driven into the ground. Therefore, as the driving portion 12 pushes the rear end of the ground rod 1, the ground rod 1 is inserted into the ground together with the excavation part 11. When the ground rod 1 is provided with a lead wire 2, the lead wire 2 is also inserted into the ground together with the ground rod 1.

상기와 같이 본 발명은 접지봉(1)이 직접 항타되어 땅을 파고 들어가는 것이 아니라, 시공장치(10)가 항타되면서 지중으로 삽입되고 접지봉(1)은 시공장치(10)의 굴착부(11)가 형성하는 경로를 통해 함께 따라 들어가는 것이다.As described above, in the present invention, the ground rod 1 is not driven directly to dig into the ground, but the construction device 10 is driven and inserted into the ground, and the ground rod 1 is driven by the excavation part 11 of the construction device 10. It is to follow together through the path of formation.

이와 같이 접지봉(1)이 브레이커의 항타 충격과 지중 삽입 저항을 직접 받지 않고, 접지봉(1)이 관형으로 형성되어 그 내부를 시공장치(10)의 굴착부(11)가 지지하고 있으므로 접지봉(1)의 변형이 방지된다.In this way, the ground rod 1 does not directly receive the driving impact of the breaker and the resistance to insert into the ground, and since the ground rod 1 is formed in a tubular shape and the inside is supported by the excavation part 11 of the construction device 10, the ground rod 1 ) is prevented.

따라서 접지봉(1)에 고강성이 요구되지 않기 때문에 접지봉(1)을 순수 동 재질로 제작할 수 있게 되어 접지봉(1) 자체의 저항이 감소되고, 또한 접지봉(1)을 보다 깊은 깊이에 매설할 수 있게 됨으로써 전주 접지저항 규정을 만족하기 용이하다.Therefore, since high rigidity is not required for the grounding rod 1, the grounding rod 1 can be made of pure copper material, so the resistance of the grounding rod 1 itself is reduced, and the grounding rod 1 can be buried at a deeper depth. As a result, it is easy to satisfy the pole earthing resistance regulation.

또한 지중 삽입 중에 접지봉(1)의 표면이 흙, 돌 등에 긁혀 상처가 나는 경우에도 전체 재질이 동이기 때문에 산화로 인해 접지봉(1) 전체의 구조적 강성이나 접지 성능을 약화되는 현상이 발생하지 않게 된다. 따라서 접지봉(1)을 단기간 내 재시공해야 하는 문제를 방지할 수 있다.In addition, even if the surface of the grounding rod 1 is scratched by soil, stone, etc. during insertion into the ground, since the entire material is copper, the structural rigidity or grounding performance of the entire grounding rod 1 is not weakened due to oxidation. . Therefore, it is possible to prevent a problem of having to re-construct the ground rod 1 within a short period of time.

또한 상기와 같이 고강성 재질의 시공장치(10)가 직접 지중으로 항타 삽입되고, 이때 접지봉(1) 뿐만 아니라 접지봉(1)에 연결된 리드선(2)도 함께 지중으로 딸려 들어갈 수 있기 때문에 접지봉 매설을 위해 미리 전주 주변 땅을 굴착해 둘 필요가 없게 된다. 이로써 접지봉을 무굴착 방식으로 시공할 수 있다.In addition, as described above, the construction device 10 made of high rigidity is directly driven and inserted into the ground, and at this time, not only the ground rod 1 but also the lead wire 2 connected to the ground rod 1 can be accompanied into the ground, so that the burial of the ground rod There is no need to excavate the land around Jeonju in advance. As a result, the ground rod can be constructed in a non-drilling method.

도 3은 전주(20)에 인접하여 접지봉(1)을 수직 설치하는 시공예를 도시한 것이다. 이와 같이 시공장치(10)를 수직 하방으로 항타함으로써 접지봉(1)을 수직 하방으로 매설할 수 있다.3 shows a construction example of vertically installing the ground rod 1 adjacent to the electric pole 20. In this way, by driving the construction device 10 vertically downward, the ground rod 1 can be buried vertically downward.

한편, 하나의 접지봉(1)만 일부 매설(접지봉 상단은 아직 지상에 있는 경우)하고 접지저항을 측정한 결과 측정치가 규정치에 근접한 경우에는 접지봉(1)에 리드선(2)을 연결한 후 계속 항타하거나 접지봉(1)을 리드선(2)이 구비된 접지봉(1)으로 교환하고 항타 작업을 진행할 수 있다. 이 경우 접지봉(1)을 규정 깊이(상단부 깊이가 0.75m 이상) 이상으로 더 박아 넣으면 접지저항 규정치를 만족할 수 있게 된다.On the other hand, if only one grounding rod (1) is partially buried (the top of the grounding rod is still on the ground) and the measured value is close to the specified value as a result of measuring the grounding resistance, connect the lead wire (2) to the grounding rod (1) and continue driving. Alternatively, the ground rod 1 may be replaced with the ground rod 1 equipped with the lead wire 2 and the driving operation may proceed. In this case, if the grounding rod 1 is further driven to a prescribed depth (the upper end depth is 0.75 m or more), the ground resistance prescribed value can be satisfied.

반면, 하나의 접지봉(1)만 사용해서는 접지저항 규정치를 만족할 수 없을 경우에는 위에 설명한 방식대로 접지봉(1)과 굴착부(11, 11′)의 길이를 연장하면서 항타 작업을 진행할 수 있다.On the other hand, if only one grounding rod 1 cannot be used to satisfy the ground resistance standard, driving can be performed while extending the length of the grounding rod 1 and the excavation parts 11 and 11' in the manner described above.

또한 별도로 도시하지 않았으나 1개소의 접지봉 매설로 접지저항 규정치를 만족할 수 없는 경우에는 먼저 설치된 접지봉으로부터 소정 거리 떨어진 위치에 또 다른 접지봉을 매설하고 이를 병렬로 연결함으로써 접지저항 규정치를 만족시킬 수 있다.In addition, although not shown separately, if the earth resistance regulation value cannot be satisfied by burying one grounding rod, another earthing rod may be buried at a predetermined distance from the previously installed grounding rod and connected in parallel to satisfy the earth resistance regulation value.

한편, 도 3과 같이 접지봉을 전주(20)에 근접하여 수직으로 매설하기 곤란한 경우가 발생할 수 있다. 본 발명은 시공장치(10)를 이용하여 접지봉(1)을 매설하기 때문에 굳이 종래와 같이 접지봉을 수직 방향으로만 항타하지 않고 경사 방향으로 항타하여도 용이하게 지중으로 삽입할 수 있다.On the other hand, as shown in FIG. 3, it may be difficult to bury the ground rod vertically close to the pole 20. Since the ground rod 1 is buried using the construction device 10 in the present invention, it can be easily inserted into the ground even if the ground rod is driven in an oblique direction instead of being driven only in a vertical direction as in the prior art.

따라서 도 4와 같이 접지봉(1)을 경사 방향으로 항타하여 매설함으로써 지중 설비(예; 상/하수도관, 통신케이블)나 또는 돌덩어리 등 접지봉(1)의 진입을 방해하는 요소를 회피하여 접지봉(1)을 매설할 수 있다. 또한 이 경우 전주(20)에 대한 접지봉(1)의 이격 거리 규정을 준수하기도 용이하다.Therefore, as shown in FIG. 4, by driving and burying the ground rod 1 in an oblique direction, the ground rod 1 is avoided by avoiding elements that hinder the entry of the ground rod 1, such as underground facilities (eg, water supply / sewage pipes, communication cables) or stones. ) can be buried. In addition, in this case, it is easy to comply with the separation distance regulation of the ground rod 1 with respect to the electric pole 20.

도 5는 본 발명에 따른 접지봉 시공방법의 순서도이다. 본 발명에 따른 접지봉 시공방법은 시공장치 결합단계(S10), 접지봉 부분삽입단계(S20), 접지저항 규정치 만족 판단단계(S30), 리드선 연결단계(S40), 접지봉 완전삽입단계(S50), 시공장치 분리단계(S60), 접지선 연결 및 보호구 설치단계(S70)를 포함한다.5 is a flow chart of a ground rod construction method according to the present invention. The grounding rod construction method according to the present invention includes a construction device coupling step (S10), a partial grounding rod insertion step (S20), a grounding resistance standard value determination step (S30), a lead wire connection step (S40), a grounding rod complete insertion step (S50), construction It includes a device separation step (S60), a ground wire connection and a protective equipment installation step (S70).

상기 접지봉과 시공장치 결합단계(S10)에서는 접지봉(1)에 시공장치(10)의 굴착부(11)를 삽입하여 시공장치(10)에 접지봉(1)을 결합한다.In the step of coupling the ground rod and the construction device (S10), the excavation part 11 of the construction device 10 is inserted into the ground rod 1 and the ground rod 1 is coupled to the construction device 10.

상기 접지봉 부분삽입단계(S20)에서는 시공장치(10)의 항타부(12)를 브레이커로 항타하여 접지봉(1)을 지중에 일부 삽입한다. 즉, 접지봉(1)의 상단부가 지면 위쪽에 남아 있는 상태까지 접지봉(1)을 지중에 삽입한다.In the step of partially inserting the ground rod (S20), the driving part 12 of the construction device 10 is driven with a breaker to partially insert the ground rod 1 into the ground. That is, the ground rod 1 is inserted into the ground until the upper end of the ground rod 1 remains above the ground.

상기 접지저항 규정치 만족 판단단계(S30)에서는 시공장치(10)를 분리하고 접지봉(10)에 접지선을 가연결한 후 접지저항을 측정하여 접지저항 규정치를 만족하는지 여부를 판단한다.In the ground resistance standard value determination step (S30), the construction device 10 is separated and a ground wire is temporarily connected to the ground rod 10, and then the ground resistance is measured to determine whether or not the ground resistance standard value is satisfied.

상기 리드선 연결단계(S40)에서는 상기 접지저항 규정치 만족 판단단계(S30)에서 접지저항이 규정치를 만족할 경우 접지봉(10)에 리드선(2)을 연결한다. 이때 접지봉(10)에 리드선(2) 대신 전주의 접지선을 바로 연결할 수도 있다. 이 경우 이하에서 설명할 접지선 연결 및 보호구 설치단계(S70)에서는 접지선이 이미 연결되어 있는 상태이므로 보호구만 설치한다.In the lead wire connection step (S40), when the ground resistance satisfies the specified value in the ground resistance determination value satisfaction determination step (S30), the lead wire 2 is connected to the ground rod 10. At this time, instead of the lead wire 2, the ground wire of the electric pole may be directly connected to the ground rod 10. In this case, in the ground wire connection and protective equipment installation step (S70) to be described below, only the protective equipment is installed because the ground wire is already connected.

상기 접지봉 완전삽입단계(S50)에서는 시공장치(10)의 항타부를 브레이커로 항타하여 리드선(2)(또는 접지선)이 연결된 접지봉(1)을 지중에 완전히 삽입한다.In the complete insertion step of the ground rod (S50), the driving part of the construction device 10 is driven with a breaker to completely insert the ground rod 1 connected to the lead wire 2 (or ground wire) into the ground.

상기 시공장치 분리단계(S60)에서는 접지봉(10)에서 시공장치(10)를 분리하여 제거한다.In the construction device separation step (S60), the construction device 10 is separated and removed from the ground rod 10.

상기 접지선 연결 및 보호구 설치단계(S70)에서는 지면 위로 돌출되어 있는 리드선(2)에 전주(20)의 접지선을 연결하고, 접지선을 가려주는 보호구를 전주(20)에 설치한다. 위에 설명한 바와 같이 상기 리드선 연결단계(S40)에서 리드선(2) 대신 전주(20)의 접지선을 접지봉(1)에 바로 연결한 경우에는 리드선 연결을 생략하고 보호구 설치 작업만 실시한다.In the ground wire connection and protective equipment installation step (S70), the ground wire of the electric pole 20 is connected to the lead wire 2 protruding above the ground, and a protective equipment for covering the ground wire is installed on the electric pole 20. As described above, in the case where the ground wire of the electric pole 20 is directly connected to the ground rod 1 instead of the lead wire 2 in the lead wire connection step (S40), the lead wire connection is omitted and only the protective equipment installation work is performed.

상기와 같은 접지봉 시공방법에 따라 시공장치를 이용하여 접지 공사를 실시함으로써 무굴착 상태에서 접지봉을 용이하게 매설하고 전주(20)를 접지할 수 있게 된다.By performing the grounding work using a construction device according to the grounding rod construction method as described above, it is possible to easily bury the grounding rod and ground the electric pole 20 in a non-excavation state.

한편, 상기 접지저항 규정치 만족 판단단계(S30)에서 측정값이 접지저항 규정치를 만족하지 않으면 접지봉과 시공장치 길이 연장단계(S35)를 실시한다. 이 단계(S35)에서는 선 삽입된 접지봉(1)의 상단에 또 다른 접지봉(1)의 하단을 삽입하여 접지봉의 전체 길이를 연장한다. 이때 시공장치(10)도 마찬가지로 선단용 굴착부(11)와 항타부(12)의 사이에 연결용 굴착부(11′)를 설치하여 굴착부(11,11′)의 전체 길이를 연장한다.On the other hand, if the measured value does not satisfy the ground resistance standard value in the ground resistance standard value determination step (S30), the ground rod and construction device length extension step (S35) is performed. In this step (S35), the lower end of another ground rod 1 is inserted into the upper end of the pre-inserted ground rod 1 to extend the entire length of the ground rod. At this time, the construction device 10 also extends the entire length of the excavation parts 11 and 11' by installing the excavation part 11' for connection between the tip excavation part 11 and the driving part 12.

이와 같이 접지봉(1)과 시공장치(10)의 길이를 연장한 후에는 상기 S10, S20, S30의 단계를 접지저항 측정치가 규정치를 만족할 때까지 반복 수행한다.After extending the length of the ground rod 1 and the construction device 10 in this way, the steps of S10, S20 and S30 are repeated until the ground resistance measurement value satisfies the prescribed value.

또한, 상기 시공장치 분리단계(S60) 이후에 접지저항저감제 주입단계(S65)를 더 실시할 수 있다. 접지저항저감제 주입단계(S65)에서는 분말 형태의 접지저항저감제를 적량의 물과 혼합하여 시공장치(10)를 제거한 홀 내부로 부어 넣는다. 접지저항저감제는 접지봉(1)의 내부 및 외주면과 토양의 사이, 시공장치(10)의 항타부(12)가 있던 공간에 충진되어 접지봉(1)과 대지 사이의 저항을 감소시켜 줌으로써 전주의 접지저항을 줄이는데 도움을 준다.In addition, a ground resistance reducing agent injection step (S65) may be further performed after the construction device separation step (S60). In the ground resistance reducing agent injection step (S65), the ground resistance reducing agent in powder form is mixed with an appropriate amount of water and poured into the hole from which the construction device 10 is removed. The ground resistance reducing agent is filled in the space where the driving part 12 of the construction device 10 was located between the inner and outer circumferential surfaces of the ground rod 1 and the soil, thereby reducing the resistance between the ground rod 1 and the earth. Helps reduce grounding resistance.

이상 설명한 바와 같이 본 발명에 따른 접지봉은 순수 구리 재질로 이루어져 부식이 적으므로 수명이 증진된다. 따라서 접지보강, 재시공에 따른 공사비용을 절감할 수 있게 된다.As described above, since the grounding rod according to the present invention is made of pure copper and has less corrosion, its lifespan is improved. Therefore, it is possible to reduce construction costs due to ground reinforcement and re-construction.

또한 굴착공사 없이 접지봉 및 리드선(접지선)을 땅속으로 매설할 수 있기 때문에 안전성이 향상되고, 공사비용이 절감된다.In addition, safety is improved and construction costs are reduced because grounding rods and lead wires (grounding wires) can be buried in the ground without excavation work.

또한 접지봉을 시공하기 위한 시공장치가 고강성을 가지며, 접지봉의 내부에 삽입되어 접지봉의 변형을 방지하기 때문에 심타에 유리하여 접지봉을 보다 깊이 매설할 수 있다.In addition, since the construction device for constructing the grounding rod has high rigidity and is inserted into the grounding rod to prevent deformation of the grounding rod, it is advantageous for core hammering and the grounding rod can be buried more deeply.

또한 동일한 이유에 의해 경사 시공(사선 시공)이 가능함으로써 접지봉 매설시 지중 설비를 피하기 용이하고 전주로부터 규정 거리를 확보하기 용이하다.In addition, for the same reason, sloped construction (oblique construction) is possible, so it is easy to avoid underground facilities when burying ground rods and to secure a prescribed distance from the pole.

상술한 바와 같이 본 발명은 도면에 도시된 실시예를 참고로 하여 설명되었으나, 이는 예시적인 것에 불과하며, 당해 기술이 속하는 분야에서 통상의 지식을 가진 자라면 이로부터 다양한 변형 및 균등한 타 실시예가 가능하다는 점을 이해할 것이다. 따라서 본 발명의 진정한 기술적 보호범위는 아래의 특허청구범위에 의해서 정하여져야 할 것이다.As described above, the present invention has been described with reference to the embodiments shown in the drawings, but this is only exemplary, and various modifications and other equivalent embodiments will be made by those skilled in the art in the field to which the technology belongs. You will understand that it is possible. Therefore, the true technical protection scope of the present invention should be determined by the claims below.

1 : 접지봉 1a : 확관부
2 : 리드선 10 : 시공장치
11,11′: 굴착부 12 : 항타부
20 : 전주 G : 지면
1: ground rod 1a: expansion part
2: lead wire 10: construction device
11,11′: excavation part 12: driving part
20: electric pole G: ground

Claims (9)

직선형 관 형상으로 형성되고,
순 동 재질로 제작된 접지봉.
It is formed in a straight tubular shape,
Ground rod made of pure copper.
청구항 1에 있어서,
상기 관의 상부 측면에 리드선이 연결된 것을 특징으로 하는 접지봉.
The method of claim 1,
A grounding rod, characterized in that a lead wire is connected to the upper side of the tube.
청구항 1에 있어서,
상기 관의 상단에 또 다른 관의 하단이 삽입될 수 있도록 확관부가 형성된 것을 특징으로 하는 접지봉.
The method of claim 1,
A grounding rod characterized in that an expanded tube is formed so that the lower end of another tube can be inserted into the upper end of the tube.
직선형 관 형상의 접지봉에 삽입되어 뾰족한 형상의 선단부가 접지봉의 하단 외측으로 돌출되는 굴착부와,
상기 굴착부의 상단에 나사 구조로 결합되어 브레이커에 의해 항타되고 상기 접지봉을 밀어주는 항타부
를 포함하는 접지봉 시공장치.
An excavation part inserted into the straight tube-shaped grounding rod and having a pointed tip protruding outward from the lower end of the grounding rod;
A driving unit coupled to the upper end of the excavation unit with a screw structure, driven by a breaker, and pushing the ground rod.
A ground rod construction device comprising a.
청구항 4에 있어서,
상기 항타부와 선단부가 뾰족한 굴착부 사이에 연결용 굴착부가 필요한 개수로 연결된 것을 특징으로 하는 접지봉 시공장치.
The method of claim 4,
Ground rod construction apparatus, characterized in that the required number of excavation parts for connection are connected between the driving part and the excavation part with a sharp tip.
청구항 4에 있어서,
상기 항타부의 외경은 접지봉의 외경보다 큰 것을 특징으로 하는 접지봉 시공장치.
The method of claim 4,
Ground rod construction apparatus, characterized in that the outer diameter of the driving portion is larger than the outer diameter of the ground rod.
접지봉에 시공장치의 굴착부를 삽입하여 시공장치에 접지봉을 결합하는 접지봉과 시공장치 결합단계(S10);
상기 시공장치의 항타부를 항타하여 접지봉을 지중에 일부 삽입하는 접지봉 부분삽입단계(S20);
상기 시공장치를 분리하고 접지봉에 접지선을 가연결한 후 접지저항을 측정하여 접지저항 규정치를 만족하는지 여부를 판단하는 접지저항 규정치 만족 판단단계(S30);
상기 접지저항 규정치 만족 판단단계(S30)에서 접지저항이 규정치를 만족할 경우 접지봉에 리드선을 연결하는 리드선 연결단계(S40);
상기 시공장치의 항타부를 항타하여 접지봉을 지중에 완전히 삽입하는 접지봉 완전삽입단계(S50);
상기 접지봉에서 시공장치를 분리하여 제거하는 시공장치 분리단계(S60);
상기 리드선의 지면 위쪽 단부에 전주의 접지선을 연결하고, 접지선을 가려주는 보호구를 전주에 설치하는 접지선 연결 및 보호구 설치단계(S70);
를 포함하는 접지선 시공방법.
A ground rod and construction device coupling step of inserting the excavation part of the construction device into the ground rod and coupling the ground rod to the construction device (S10);
A partial grounding rod insertion step (S20) of partially inserting the grounding rod into the ground by driving the driver of the construction device;
A ground resistance standard value determination step (S30) of determining whether or not the ground resistance standard value is satisfied by measuring the ground resistance after separating the construction device and temporarily connecting the ground wire to the ground rod (S30);
A lead wire connection step (S40) of connecting a lead wire to a grounding rod when the ground resistance satisfies the specified value in the ground resistance determining value satisfaction determination step (S30);
A ground rod complete insertion step (S50) of completely inserting the ground rod into the ground by driving the driver of the construction device;
A construction device separation step (S60) of separating and removing the construction device from the ground rod;
A ground wire connection and protective equipment installation step (S70) of connecting the ground wire of the electric pole to the upper end of the ground of the lead wire and installing a protective equipment for covering the ground wire on the electric pole;
Ground wire construction method comprising a.
청구항 7에 있어서,
상기 접지저항 규정치 만족 판단단계(S30)에서 측정값이 접지저항 규정치를 만족하지 않으면 선 삽입된 접지봉에 또 다른 접지봉을 연결하여 접지봉의 전체 길이를 연장하고, 상기 시공장치는 선단용 굴착부와 항타부의 사이에 연결용 굴착부를 설치하여 굴착부의 전체 길이를 연장하는 접지봉과 시공장치 길이 연장단계(S35)를 실시하는 것을 특징으로 하는 접지선 시공방법.
The method of claim 7,
If the measured value does not satisfy the ground resistance specified value in the ground resistance standard satisfaction determination step (S30), another ground rod is connected to the wire-inserted ground rod to extend the entire length of the ground rod, and the construction device is driven with the tip excavation unit. A ground wire construction method characterized in that a ground rod and a construction device length extension step (S35) for extending the entire length of the excavation part by installing a connection excavation part between the parts.
청구항 7에 있어서,
상기 시공장치 분리단계(S60) 이후에 접지저항저감제를 물과 혼합하여 시공장치를 제거한 홀 내부로 부어 넣는 접지저항저감제 주입단계(S65)를 실시하는 것을 특징으로 하는 접지선 시공방법.
The method of claim 7,
After the construction device separation step (S60), a ground resistance reducing agent injection step (S65) of mixing the ground resistance reducing agent with water and pouring it into the hole from which the construction device is removed is performed.
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CN116908550B (en) * 2023-09-13 2023-11-21 山东省阳信根深电气有限公司 Grounding condition safety detection device and method for distribution box
CN118431784A (en) * 2024-07-02 2024-08-02 国网安徽省电力有限公司凤阳县供电公司 A pre-buried grounding structure for distribution network

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