KR102621387B1 - Ground terminal for buried branch line of transmission tower - Google Patents

Abstract

The present invention is a grounding terminal for a buried branch line of a transmission tower, and more specifically, a first terminal portion connected to a first connector for energizing a transmission line, and a first terminal portion spaced apart from the first terminal portion and through which the first fastening means penetrates. A first terminal body having a fastening hole and a guide hole formed along the longitudinal direction spaced apart from the first terminal portion, and a second fastening means penetrating the second fastening means so as to move linearly on the first terminal body along the guide of the guide hole. A second terminal portion having a fastening hole, a receiving port spaced apart from the second fastening hole and connected to the second connecting agent, and a second terminal portion spaced apart from the second fastening hole for energizing the first connecting agent and the second connecting agent. A ground terminal for a buried branch line of a transmission tower including a second terminal body provided with a third terminal portion is provided.

Description

Ground terminal for buried branch line of transmission tower {GROUND TERMINAL FOR BURIED BRANCH LINE OF TRANSMISSION TOWER}

The present invention relates to a ground terminal for a buried branch line of a transmission tower, and more specifically, to a ground terminal for a buried branch line of a transmission tower to prevent the ground connection between the transmission tower and the buried branch line from being disconnected due to ground subsidence. .

Modern society has the characteristic of consuming a lot of energy in dense areas through industrialization, informatization, and urbanization. In particular, electric energy is used the most because it is convenient to use and simple to transport, so the stable supply of electric energy is important throughout the industry. It is one of the factors.

In order to provide a stable supply of electric energy, the electric energy produced at the power plant must be stably transmitted through transmission lines to general consumers. These transmission lines must be used to protect electric power facilities from natural disasters such as lightning, and to maintain a reference potential in terms of electric power business. Ground is used to provide support.

When a power line or overhead branch line of a transmission line receives a direct lightning strike, the lightning current flows to the ground through the member of the transmission tower. If the grounding resistance is large, the electric potential rises and a reverse flash occurs between the transmission tower and the wire, causing equipment damage (insulator). There is a concern about reverse flashover, insulator damage, etc.), and to prevent reverse flashover, buried ground wires are installed to reduce grounding resistance.

Conventionally, compression terminals were used to connect buried branch lines to transmission towers, but during transmission line construction and repair work, the buried branch lines are separated from the compression terminals due to ground subsidence over time due to embankment after ground excavation and are disconnected. occurred.

When a buried branch wire is disconnected, an increase in grounding resistance causes equipment failure due to reverse flash, which leads to equipment damage in the event of a lightning strike, etc., so it is important to prevent social safety accidents and human and material losses due to additional repair work. Therefore, there is a need to improve compression terminals to prevent disconnection of buried branch lines due to ground subsidence.

The background technology of the present invention is disclosed in Republic of Korea Registered Utility Model Publication No. 20-0377180 (registered on February 19, 2005, title of invention: Compression terminal of grounding system).

An embodiment of the present invention is intended to provide a ground terminal for a buried branch line of a transmission tower to prevent the ground connection between the transmission tower and the buried branch line from being disconnected due to ground subsidence.

In order to achieve the above technical problem, an embodiment according to the present invention includes a first terminal portion connected to a first connector for energizing a transmission line, and a first fastening hole spaced apart from the first terminal portion and through which the first fastening means passes. and a first terminal body having a guide hole spaced apart from the first terminal unit and penetrating along the longitudinal direction, and a second fastening hole through which the second fastening means passes so as to move linearly on the first terminal body following the guidance of the guide hole. and a second terminal portion spaced apart from the second fastening hole and having a receiving port connected to the second connecting agent, and a third terminal portion spaced apart from the second fastening hole for energizing the first connecting agent and the second connecting agent. A grounding terminal for a buried branch line of a transmission tower is provided, comprising a second terminal body having a terminal portion.

In an embodiment of the present invention, a first bent portion is formed in the first terminal body to have a height difference between one end and the other end, and a second bent portion is formed in the second terminal body to have a height difference between one end and the other end. One end of the second terminal body may face the other end of the first terminal body to move in a straight line based on the fastening force of the second fastening means.

In an embodiment of the present invention, the range of linear movement of the second terminal body may be determined based on at least one of the first connector and the guide hole.

In an embodiment of the present invention, the first terminal body is spaced apart from the first terminal portion and the third terminal portion through the first bent portion to prevent mutual interference, and the second terminal body is separated through the second bent portion. The other end of the first terminal body and the second connecting agent can be spaced apart to prevent mutual interference.

In an embodiment of the present invention, one end of the second terminal body may have a limit of linear movement on the same line as the first bent portion.

In an embodiment of the present invention, the first terminal body has the first fastening hole formed at one position with respect to the first terminal portion, the guide hole is formed at the other position, and the first fastening hole , the first terminal portion and the guide hole may be sequentially arranged on the same line.

In an embodiment of the present invention, the second terminal body is provided with the third terminal portion at one position with respect to the second fastening hole, and the second terminal portion is provided at the other position, and the third terminal portion , the first fastening hole and the second terminal unit may be sequentially arranged on the same line.

In an embodiment of the present invention, the first fastening means and the second fastening means may be of a bolt fastening type.

The ground terminal for a buried branch line of a transmission tower according to the present invention is composed of a first terminal body and a second terminal body, so that the second terminal body can move in a straight line on the first terminal body, thereby preventing ground subsidence around the transmission tower. Because the first connector and the second connector are maintained, disconnection between the transmission tower and the buried branch line can be prevented.

In addition, a first bent portion is formed in the first terminal body, and a second bent portion is formed in the second terminal body, so that the first terminal portion and the third terminal portion are spaced apart through the first bent portion, and the first terminal portion is separated through the second bent portion. Since the main body and the second terminal are spaced apart, mutual interference between components is prevented when the second terminal main body moves in a straight line, so the mutual operating relationship between the first terminal main body and the second terminal main body in response to ground subsidence can proceed flexibly. .

Figure 1 is a perspective view showing a ground terminal for a buried branch line of a transmission tower according to an embodiment of the present invention.
Figure 2 is an exploded view showing a ground terminal for a buried branch line of a transmission tower according to an embodiment of the present invention.
Figure 3 is a side view showing a ground terminal for a buried branch line of a transmission tower according to an embodiment of the present invention.
Figure 4 is a diagram showing an operation example of a ground terminal for a buried branch line of a transmission tower according to an embodiment of the present invention.
Figures 5 and 6 are diagrams schematically showing an application example of a ground terminal for a buried branch line of a transmission tower according to an embodiment of the present invention.

A ground terminal for a buried branch line of a transmission tower according to an embodiment of the present invention will be described with reference to the attached drawings. In this process, the thickness of lines or sizes of components shown in the drawing may be exaggerated for clarity and convenience of explanation.

In addition, the terms described below are terms defined in consideration of functions in the present invention, and may vary depending on the intention or custom of the user or operator. Therefore, definitions of these terms should be made based on the content throughout this specification.

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

Figure 1 is a perspective view showing a ground terminal for a buried branch line of a transmission tower according to an embodiment of the present invention, Figure 2 is an exploded view showing a ground terminal for a buried branch line of a transmission tower according to an embodiment of the present invention, and Figure 3 is an exploded view showing the ground terminal for a buried branch line of a transmission tower according to an embodiment of the present invention. This is a side view showing a ground terminal for a buried branch line of a transmission tower according to an embodiment of the invention, and the description will be based on this.

As shown in Figures 1 to 3, the ground terminal 100 for a buried branch line of a transmission tower according to the present invention includes a first terminal body 110 and a second terminal body 130.

The first terminal body 110 has a structure extending long in the longitudinal direction, a first terminal portion 111 connected to the first connecting agent 105 for energizing a transmission line (not shown), and a first terminal portion 111. ) and a first fastening hole 113 through which the first fastening means 120 penetrates, and a guide hole 115 spaced apart from the first terminal 111 and penetrating along the longitudinal direction.

The first terminal portion 111 has a pair of terminal holes (not shown) penetrating in the transverse direction with respect to the first terminal body 110, and a terminal hole (not shown) formed at one end of the first connector 105. ) and are fixedly connected for mutual energization.

The guide hole 115 extends long from a portion of the center of the first terminal body 110, forms a first limit point at a position close to the first terminal portion 111, and is positioned close to the end of the first terminal body 110. A second threshold is formed.

The first terminal body 110 has a first fastening hole 113 formed at one position with respect to the first terminal unit 111, a guide hole 115 formed at the other position, and a first fastening hole ( 113), the first terminal portion 111 and the guide hole 115 are sequentially arranged on the same line.

A first bent portion 117 is formed in the first terminal body 110 to provide a height difference between one end of the first terminal body 110 and the other end of the first terminal body 110.

The first bent portion 117 is bent at one end of the first terminal body 110 and extends to the other end of the first single body, and due to the difference in height through the first bent portion 117, the first terminal portion (111) and the third terminal portion 135 are spaced apart to prevent mutual interference.

The first terminal body 110 has one end of the first terminal body 110, the first bent portion 117, and the other end of the second terminal body 130 being the same based on the longitudinal direction of the first terminal body 110. It can be arranged on a line and formed as an integral piece of the same thickness.

The second terminal body 130 has a structure arranged in parallel with the first terminal body 110 through surface contact to conduct electricity between them.

The second terminal body 130 has a second fastening hole 131 through which the second fastening means 140 passes so as to move linearly on the first terminal body 110 according to the guide hole 115, and a second fastening hole 131 through which the second fastening means 140 passes. A second terminal portion 133 having a receiving port 133a spaced apart from the hole 131 and connected to the second connecting agent 30, and spaced apart from the second fastening hole 131 and connected to the first connecting agent 105 and the second connecting agent 105. 2. It is provided with a third terminal portion 135 for energizing the connecting agent 30.

The second terminal unit 133 protects the tip of the second connector 30 from the influence of the external environment through a receiving hole 133a formed inside, and is a second terminal body that moves linearly on the first terminal body 110. In response to changes in the position of (130), separation and separation from the second terminal body 130 can be prevented, and the description of the connection structure between the second terminal portion 133 and the second connector 30 is omitted as it is a known technology. do.

The third terminal portion 135 has a pair of terminal holes (not shown) penetrating in the transverse direction with respect to the second terminal body 130, and is formed at the other end of the first connector 105. ) and are fixedly connected for mutual energization.

A second bent portion 137 is formed in the second terminal body 130 so that one end of the second terminal body 130 and the other end of the second terminal body 130 have a height difference from each other.

The second bent portion 137 is bent at one end of the second terminal body 130 and extends to the other end of the second single body, and due to the difference in height through the second bent portion 137, the first terminal The other end of the main body 110 and the second terminal portion 133 are spaced apart to prevent mutual interference.

The second terminal body 130 can be formed as one body with the same thickness by having one end of the second terminal body 130, the second bent portion 137, and the other end of the second terminal body 130 all arranged on the same line. there is.

The second terminal body 130 faces the other end of the first terminal body 110 so that one end of the second terminal body 130 moves linearly based on the fastening force of the second fastening means 140, and is bent first. It has a limit to straight-line movement on the same line as the unit 117.

The range of linear movement of the second terminal body 130 is determined based on at least one of the first connector 105 and the guide hole 115, and the range of linear movement of the second terminal body 130 is determined by the first connecting agent 105 and the guide hole 115. It can be limited by the extended length of the connecting agent 105 and the length of the guide hole 115 extending along the longitudinal direction of the first terminal body 110.

The second terminal body 130 is provided with a third terminal portion 135 at one position based on the second fastening hole 131, and a second terminal portion 133 at the other position, and a third terminal portion ( 135), the first fastening hole 113, and the second terminal portion 133 are sequentially arranged on the same line.

In the structure of the ground terminal 100 for a buried branch line of a transmission tower according to the present invention, the first fastening means 120 and the second fastening means 140 are made of a bolt fastening type, but are not limited thereto.

The first fastening means 120 and the second fastening means 140 are respectively arranged in a direction crossing the first connecting agent 105 and the second connecting agent 30, and may be provided in parallel at positions spaced apart from each other. there is.

The first fastening means 120 maintains complete fastening (fixation) of the first terminal body 110 through a bolt fastening method, and the second fastening means 140 maintains the first terminal body 110 through a bolt fastening method. It is incompletely fastened (semi-fixed) to have a position change of linear movement along the guide hole 115.

The second fastening means 140 connects the guide hole 115 of the first terminal body 110 and the second terminal within an allowable range of fastening force to prevent the first terminal body 110 and the second terminal body 130 from being separated from each other. It is coupled through the second fastening hole 131 of the main body 130.

The first connecting agent 105 may be made of a shielding wire made of a metal mesh surrounding the internal wire member to protect the energized electrical signal from external noise, and the first terminal body 110 ) and the second terminal body 130, it is desirable to implement it to have a sufficient length for a combination based on the mutual operating relationship.

The first terminal body 110 and the second terminal body 130 are made of a metal body to conduct electricity based on an electrical signal, and are preferably made of a type of metal material to prevent breakage due to heterogeneity between dissimilar metals. , but is not limited to this.

Hereinafter, the operating principle of the ground terminal for the buried branch line of the transmission tower according to the present invention will be described.

Figure 4 is a diagram showing an operation example of a ground terminal for a buried branch line of a transmission tower according to an embodiment of the present invention, and Figures 5 and 6 are application examples of a ground terminal for a buried branch line of a transmission tower according to an embodiment of the present invention. This is a drawing schematically showing, and description will be made based on this, with reference to FIGS. 1 to 3 described above.

As shown in FIG. 4, the ground terminal 100 for a buried branch line of a transmission tower includes a first terminal body 110 and a second terminal body 130.

The first terminal body 110 has a structure extending long in the longitudinal direction, and is spaced apart from the first terminal portion 111, which is connected to the first connecting agent 105 for energizing the transmission line. It is provided with a first fastening hole 113 through which the first fastening means 120 penetrates, and a guide hole 115 formed penetrating along the longitudinal direction and spaced apart from the first terminal portion 111.

The second terminal body 130 has a second fastening hole 131 through which the second fastening means 140 passes so as to move linearly on the first terminal body 110 along the guide hole 115 of the first terminal body 110. ), a second terminal portion 133 having a receiving port 133a spaced apart from the second fastening hole 131 and connected to the second connecting agent 30, and a first connection spaced apart from the second fastening hole 131. It is provided with a third terminal portion 135 for energizing the first (105) and the second connecting agent (30).

As shown in FIGS. 4(a) and 5, the ground terminal 100 for the buried branch line of the transmission tower is fixed to the tower member 50 through the first terminal body 110 and the first fastening means 120. , the first terminal body 110 and the second terminal body 130 are fastened through the second fastening means 140.

The second connector 30 is extended to be adjacent to the tower member 50 using an embedded member 70 constructed in the ground 90, and the second connector 30 enters the tower member 50. and the second terminal portion 133 of the second terminal body 130 are connected to each other, and grounding is performed based on mutual conduction of the first connecting agent 105 and the second connecting agent 30.

The second terminal body 130 has a first limiting point for linear movement of the second terminal body 130 on the same line as the first bent portion 117 of the first terminal body 110, and the first connecting agent (105) has the maximum relaxation force at the first limit point of the second terminal body (130).

As shown in FIGS. 4(b) and 6, when ground subsidence occurs around the steel tower member 50, a subsidence space is created around the steel tower member 50 due to ground changes.

The second terminal body 130 exerts a tensile force downward due to the influence of ground subsidence, and the second terminal body 130 changes the shape of the guide hole 115 in response to this tensile force. It is moved downward to the base.

The second terminal body 130 has a second limiting point for downward movement at the end of the first terminal body 110, and the first connecting agent 105 reaches a maximum at the second limiting point of the second terminal body 130. It has elasticity.

The first connecting agent 105 is preferably provided with a length corresponding to the second limit point movement of the second terminal body 130, and the first terminal body 110 and the second terminal body 130 are connected to the first connection. They are energized based on connection with the first 105 and change their positions relative to each other through fastening with the second fastening means 140.

The second terminal body 130 may be placed in an incomplete fastening (semi-fixed) position at the position of the first limit point or the initial position through the second fastening means 140 after the ground subsidence recovery work is completed.

The ground terminal 100 for the buried branch line of the transmission tower implements the limit point for the change in position of the second terminal body 130 as the first limit point and the second limit point, but is not limited to this, and the second terminal may be connected depending on the work environment. The limit point for the change in position of the main body 130 can be implemented in various ways, and the limit point required by the worker can be designated as a guide area for the change in position of the second terminal main body 130.

The ground terminal 100 for the buried branch line of the transmission tower can adjust the length of the second connector 30 at once, so that the second connection can be made by the stretching force transmitted to the second connector 30 in the event of ground subsidence. This prevents the device 30 from being disconnected or damaged.

When it is necessary to adjust the length of the second connector 30, release the pressing force of the second fastening means 140 and place the second terminal body 130 on the guide hole 115 of the first terminal body 110. After moving to the original position and adjusting the second fastening means 140 to a certain range of pressing force, the grounding of the steel tower member 50 and the buried second connecting agent 30 can be maintained.

As a result, the ground terminal 100 for a buried branch line of a transmission tower according to the present invention is composed of a first terminal body 110 and a second terminal body 130, so that the second terminal body 130 is connected to the first terminal body. Since straight line movement is possible on (110), when the ground around the tower member 50 subsides, the first connector 105 and the second connector 30 are energized, so the tower member 50 and the buried branch line Disconnection between the second connecting agents 30 can be prevented.

A first bent portion 117 is formed in the first terminal body 110, and a second bent portion 137 is formed in the second terminal body 130, so that the first terminal portion is formed through the first bent portion 117. (111) and the third terminal portion 135 are spaced apart, and the first terminal body 110 and the second terminal portion 133 are spaced apart through the second bent portion 137.

Since mutual interference between components of the second terminal body 130 is prevented when moving in a straight line, the mutual operating relationship between the first terminal body 110 and the second terminal body 130 can proceed flexibly to respond to ground subsidence. .

Those skilled in the art to which the present invention pertains will understand that the present invention can be implemented in other specific forms without changing its technical idea or essential features. Therefore, the embodiments described above should be understood in all respects as illustrative and not restrictive. The scope of the present invention is indicated by the scope of the claims described below rather than the detailed description above, and all changes or modified forms derived from the meaning and scope of the claims and their equivalent concepts are included in the scope of the present invention. must be interpreted.

30: first connection agent 50: steel tower member
70: buried member 90: ground
100: Ground terminal for buried branch line of transmission tower
105: first connection agent 110: first terminal body
111: first terminal portion 113: first fastening hole
115: guide hole 117: first bent portion
120: first fastening means 130: second terminal body
131: second fastening hole 133: second terminal portion
133a: Receiving port 135: Third terminal portion
137: second bent portion 140: second fastening means

Claims (8)

A first terminal portion connected to the first connector for energizing the transmission line, a first fastening hole spaced apart from the first terminal portion through which the first fastening means penetrates, and a guide spaced apart from the first terminal portion and formed penetrating along the longitudinal direction. A first terminal body having a hole; and
A second terminal portion having a second fastening hole through which the second fastening means passes so as to move linearly on the first terminal body according to the guide of the guide hole, and a receiving hole spaced apart from the second fastening hole and connected to a second connecting agent. and a second terminal body spaced apart from the second fastening hole and having a third terminal portion for connecting the first connector and the second connector. Includes,
A first bent portion is formed in the first terminal body to have a height difference between one end and the other end, and a second bent portion is formed in the second terminal body to have a height difference between one end and the other end,
A grounding terminal for a buried branch line of a transmission tower, characterized in that one end of the second terminal body faces the other end of the first terminal body so that it moves linearly based on the fastening force of the second fastening means.
delete According to claim 1,
A ground terminal for a buried branch line of a transmission tower, wherein the second terminal body has a range of linear movement determined based on at least one of the first connector and the guide hole.
According to claim 1,
In the first terminal body, the first terminal portion and the third terminal portion are spaced apart through the first bent portion to prevent mutual interference,
The second terminal body is a grounding terminal for a buried branch line of a transmission tower, wherein the other end of the first terminal body and the second connecting agent are spaced apart through the second bent portion to prevent mutual interference.
According to claim 1,
A ground terminal for a buried branch line of a transmission tower, characterized in that one end of the second terminal body has a limit of straight movement on the same line as the first bent portion.
According to claim 1,
The first terminal body has the first fastening hole formed at one position with respect to the first terminal portion, and the guide hole is formed at the other position,
A ground terminal for a buried branch line of a transmission tower, characterized in that the first fastening hole, the first terminal portion, and the guide hole are sequentially arranged on the same line.
According to claim 1,
The second terminal body is provided with the third terminal portion at one position with respect to the second fastening hole, and the second terminal portion is provided at the other position,
A ground terminal for a buried branch line of a transmission tower, characterized in that the third terminal portion, the first fastening hole, and the second terminal portion are sequentially arranged on the same line.
According to claim 1,
A grounding terminal for a buried branch line of a transmission tower, characterized in that the first fastening means and the second fastening means are of a bolt fastening type.

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