WO2014133233A1

WO2014133233A1 - Sheet type grounding plate

Info

Publication number: WO2014133233A1
Application number: PCT/KR2013/006826
Authority: WO
Inventors: 박종태
Original assignee: 제룡산업 주식회사
Priority date: 2013-02-28
Filing date: 2013-07-30
Publication date: 2014-09-04
Also published as: KR101262359B1

Abstract

The present invention relates to a sheet type grounding plate. The present invention provides a sheet type grounding plate (10), which can be connected to a grounding wire (62) extended from a telephone pole (60) and be used in constructing a grounding, the sheet type grounding plate comprising: a grounding sheet layer (30) including an upper and a lower sheet nets (31 and 32) having mesh net structures of the same size, the upper and the lower sheet nets (31 and 32) having a terminal connecting rod (40) to which a grounding lead wire (42) to be connected to the grounding wire (62) of the telephone pole (60) can be connected; a felt layer (20) including carbon felts having the same size and inserted between the upper and the lower sheet nets (31 and 32); and a plurality of rivets (34) for coupling and fixing the upper and the lower sheet net (31 and 32) to each other through riveting, so as to couple and fix the felt layer (20) and the grounding sheet layer (30) to each other so that the felt layer (20) and the grounding sheet layer (30) can be in close contact with each other.

Description

【Specification】

[Name of invention]

Sheet Type Ground Plate [Technical Field]

The present invention relates to a sheet-type ground plate, and more particularly, it can not only significantly reduce the weight of the ground plate itself, but also can reduce the production cost due to excellent productivity and economic efficiency, and the side of the pole is embedded in a sheet form at the bottom of the black As it can be installed, it is easy and easy to construct a sheet ground plate, which greatly improves work efficiency, and relates to a sheet ground plate that can realize a stable ground resistance value, which is the most basic element of the ground plate. .

Background Art

As is well known, when a hand or skin comes into contact with a product that has a fault (leakage current flows) due to an abnormality in an electrical product, current flows out through the person's body to the ground, which is an electric shock. It ends with a slight shock, but in the case of a large current it can lead to a fatal disorder or death. To avoid this dangerous condition is grounding. In addition, grounding connects grounding electrodes to soil and connects electrical equipment such as communication equipment, electronic measuring equipment, lightning protection equipment, and power equipment with the earth, and surges caused by overload or lightning caused by non-ideal current. Serge is sent to the ground to prevent damage to the equipment.

In this case, the contact resistance generated between the ground electrode and the ground is called a ground resistance. The ideal value for discharging overcurrent or surge to the ground in a very short time is '0', but in most cases, it is ideal. It is impossible to secure the ground resistance.

If the grounding resistance is too large, only a part of the overcurrent or the lightning current is discharged through the ground rod (or the ground plate), and the remaining charge flows backward to the various equipment or the human body. There was a problem that caused various damages.

To prevent this, the ground rod or ground plate usually has a ground resistance depending on the application.

It is used to bury 10-100 Ω or less.

For example, the grounding work of the distribution line according to the prior art, as shown in Figure 1, after excavating a pit of a certain depth that can be embedded in the electric pole (2) to the ground (3), it is fixed to one side of the pit Excavating another pit having a depth and width, hitting and laying a plurality of ground rods (1) used for grounding the pit using a tool such as a hammer, the ground wire drawn out in the pole (2) 4) and ground rod (1) are connected in series or in parallel.

And, when the ground construction work as described above is completed, the pole (2) is raised up to fill the pit-like contents in the pit, construction and installation work is made, as such, the pole pole (2) the ground construction work is completed It will have a ground state in the form shown in FIG.

On the other hand, recently, the Republic of Korea Patent Publication No. 0907699 (2009.7.14. Announcement) discloses a carbon ground plate and the Republic of Korea Patent No. 1135631 (August 17, 2012. Announcement) discloses a manufacturing method of a lightweight conductive ground plate. .

The ground plate disclosed in the above documents is not the type of ground rod (1) of FIG. 1, but also to increase the ground area as shown in FIG. 2 and to perform grounding of the distribution line using a conductive ground resistance reducing agent. will be.

That is, as shown in Figure 2, the conductive ground plate 100 is made by forming a form in which the iron sub-materials are built using a conductive concrete mixed with cement, inorganic layer ᅳ reaction regulator, conductive carbon fiber, etc. It was normal.

In order to reduce the ground resistance according to the conventional grounding, the grounding plates are connected in series, or two or more grounding plates are spaced more than a predetermined distance in parallel.

As a result, the grounding work is difficult and the construction cost is excessive. There was a problem in the case that it takes time and the grounding effect is not obtained satisfactorily.

This is also related to the reduction characteristic of ground resistance. That is, as shown in FIG. 3, the ground resistance shows a decrease characteristic of the ground resistance according to the number of ground plates, and the ground resistance decreases exponentially as the number of ground plates increases. As such, when the ground resistance is reduced to some extent, a threshold is reached which no longer decreases, no matter how many ground planes are added.

In particular, the threshold of the ground resistance is also related to the ground area and earth resistivity. That is, as shown in FIG. 4, it can be seen that the grounding resistance decreases exponentially as the size of the grounding plate becomes larger and the length of the grounding plate becomes longer. Through this, the grounding resistance is related to the contact area between the grounding plate and the earth. It can be seen.

However, as described above, in the conventional method of grounding a distribution line, distribution works are often scattered in a wide area, and it is often difficult to obtain a grounding work to obtain a predetermined ground resistance value according to the local situation.

In particular, the ground plate disclosed in the related art has a problem in that its own weight is not only difficult to carry out construction work during transportation and ground construction, but also expensive compared to other grounding methods, and requires a very large construction area and is impossible to maintain.

Republic of Korea Patent Publication No. 0399875 (October 10, 2003), Republic of Korea Patent Publication No. 2010-29684 (published March 31, 2010), Republic of Korea Patent Publication No. 2011-18778 (published Feb. 2011), Korean Unexamined Patent Publication No. 2012-97847 (published on September 9, 2012) and the like have attempted to provide a new type of ground plate that can facilitate grounding work while reducing weight.

[Technical problem]

Therefore, the present invention has a variety of problems, such as the ground plate containing a conventional conductive concrete as mentioned above, the need to supplement and improve it, and pay attention to the fact that various types of ground plate has been tried recently, It was researched and developed to provide a new type of sheet ground plate that can be used by embedding it in sheet form.

That is, the object of the present invention can not only significantly reduce the weight of the ground plate itself, but also reduce the production cost due to excellent productivity and economic efficiency, and the construction work of the sheet-type ground plate itself is easy and easy to greatly improve the work efficiency. In addition, the present invention provides a sheet-type ground plane to realize a stable ground resistance value, which is the most basic element of the ground plane.

Technical Solution

The present invention for achieving the above object, in the sheet-type ground plate that can be grounded by connecting with the ground wire drawn out from the pole, which is provided with a terminal connecting to connect the ground lead wire for connecting with the ground wire A ground sheet layer consisting of upper and lower sheet meshes having a mesh network structure of the same size, and a felt layer made of carbon felt inserted into the same size between the upper and lower sheet meshes, and the felt layer and the ground sheet layer mutually It is characterized by providing a sheet-like ground plate including a plurality of rivets for coupling and fixing between the upper and lower sheet nets by a riveting operation so as to be fixed in close contact.

Here, according to a preferred embodiment of the present invention, the upper, lower sheet network and the terminal connecting strip of the ground sheet layer is made of stainless material, the terminal connecting strip is welded on both sides of either sheet network of the upper, lower sheet network It is preferable to combine through each.

In addition, according to a preferred embodiment of the present invention, the connection between the terminal connecting rod and the ground lead wire is connected and wired by a lead wire terminal portion made of a compression terminal, the connection between the ground wire and the ground lead wire is connected by a sleeve and the lead wire terminal portion It is preferable that the connection part by the sleeve and the sleeve be wrapped in a form of completely enclosing a protective tube for preventing corrosion. ^' Advantageous Effects

According to the present invention, a felt layer made of carbon felt having a good hygroscopic ability and excellent electrical conductivity due to structural micropores, and a mesh net type image made of stainless steel material having excellent corrosion resistance surrounding the felt layer ， By providing a sheet-type ground plate including a ground sheet layer formed of a lower sheet network, it is possible to manufacture at a relatively low production cost as compared to the conventional ground plate, and has an advantage of excellent price competitiveness for a product.

In addition, since the sheet-like ground plate according to the present invention is manufactured in a thin sheet shape, it can be significantly reduced compared to the weight of the existing ground rod or ground plate, which not only saves considerable costs in terms of saving resources, but also transports the ground during construction. And the installation is very easy.

[Brief Description of Drawings]

1 is an exemplary view showing a ground state of a distribution line according to the prior art.

Figure 2 is a perspective view showing a ground plate made of conductive concrete according to the prior art.

3 is a graph showing a change in ground resistance according to the number of ground rods.

4 is a graph showing the change in ground resistance with respect to the contact area between ground and earth; 5 is an exploded perspective view showing the configuration of the sheet-like ground plate according to the present invention. Figure 6 is a plan view showing the configuration of the sheet-like ground plate according to the invention and the ground lead wire connection state.

Figure 7 is a real photograph showing a prototype of the sheet-like ground plate according to the present invention. Figure 8 is a side cross-sectional view showing the configuration of the sheet-like ground plate according to an embodiment of the present invention and the ground lead wire connection state.

Figure 9 is a side cross-sectional view showing the configuration of the sheet-like ground plate according to another embodiment of the present invention and the ground lead wire connection state.

— Doubles the grounding capacity by connecting the sheet-type ground planes in series according to Τ0ΐΓ ¥ State of use showing the state of doing.

11 to 13 is a sheet-like ground plate according to the present invention is installed in the longitudinal direction on the pole pole side ground, or bend in the form of an equilateral arc on the pole pole side ground in a short vertical direction, or be buried flat under the pole pole The use state diagram showing the construction status of each grounded structure.

[Form for the invention all implementation]

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

In the following description of the present invention, if it is determined that detailed descriptions of related known functions or configurations may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

Terms to be described later are set in consideration of functions in the present invention, which may vary depending on the intention or custom of the producer producing the product, and the definitions should be made based on the contents throughout the present specification. 5 to 7, the sheet-like ground plate 10 according to the present invention, the felt layer 20 made of carbon felt, the upper and lower parts of the mesh network structure surrounding the felt layer 20 up and down It has a configuration including a ground sheet layer (30) consisting of a sheet net (31, 32), and a plurality of rivets (34) capable of bonding and fixing the felt layer (20) and the ground sheet layer (30).

Here, the felt layer 20 and the ground sheet layer 30 has a rectangular plate-like structure, and have the same size (or width).

Carbon felt used for the felt layer 20 is not only not only has a material property having excellent electrical conductivity and high corrosion resistance, but also is a known material that has recently been widely used as an electrode of a heat insulating material and a fuel cell.

The carbon felt has almost no hygroscopic ability according to the characteristics of the material itself, but the inside of the carbon felt is a sponge or a cotton wool felt. Due to the structural (black and morphological) porosity, numerous micropores exist, and the carbon felt has structurally excellent moisture absorption ability because moisture (or moisture) can naturally penetrate into the micropores inside the carbon felt. .

Therefore, when the sheet-shaped ground plate 10 having the felt layer 20 made of carbon felt is buried in the ground, the electrical conductivity doubles because the moisture in the ground is absorbed into the carbon felt together with the excellent electrical conductivity of the carbon felt itself. It can be used to realize very good grounding ability.

In particular, since the carbon felt has very good corrosion resistance, it does not corrode well even when it is buried in the ground, so that the durability of the sheet-shaped ground plate 10 can be greatly improved, so that the grounding ability of the ground plate can be maintained for a long time. do.

The upper and lower sheet nets 31 and 32 constituting the ground sheet layer 30 are made of stainless steel and have a mesh net type plate structure.

The stainless steel material has a lower electrical conductivity than a copper material such as copper, but has excellent corrosion resistance. In the present invention, a stainless steel material is used as the ground sheet layer 30.

In other words, by using a copper material having excellent electrical conductivity as a material of the mesh ground plate disclosed in Korean Patent Laid-Open Publication No. 2012-97847, the grounding effect can be maximized. When buried in many grounds, it was easily corroded and had a disadvantage of not being able to exhibit long-term grounding ability.

Therefore, in the present invention, the mesh sheet type copper plate having excellent electrical conductivity may be used as the material of the ground sheet worm 30, but after the grounding plate is buried once in the ground for grounding construction of the pole, the embedded grounding plate itself is used. Since it is not easy to replace and it is very important to maintain durability for a long time, the electrical conductivity is somewhat lower than that of copper plate, but considering the corrosion resistance, stainless steel material which does not use copper plate for a long time without using copper plate is considered I use it as a material will be.

In particular, in the case of the sheet-shaped ground plate 10 according to the present invention, since the felt layer 20 made of carbon felt is formed between the ground sheet layer 30, the stainless steel material of the ground sheet layer 30 is somewhat Even if the electrical conductivity is low, the overall conductivity of the carbon felt constituting the felt 20 is very excellent compared to the grounding plate or ground rod made of a conventional conductive concrete material.

According to the present invention, the upper and lower sheet meshes 31 and 32 are tightly bonded between the felt layers 20 between the upper and lower sheet meshes 31 and 32. And the felt layer 20 made of carbon felt is applied by a liquid adhesive material such as an adhesive, and is not preferable. .

That is, as shown in FIGS. 5 to 7, the upper sheet net 31, the felt layer 20, and the lower sheet net 32 are sequentially arranged, and in this state, the upper sheet net 31 is lowered. A plurality of rivet holes 33 reaching the sheet net 32 are evenly distributed at regular intervals throughout the plate sheet layer 30, and rivets 34 are embedded in the rivet holes 33 through riveting. The ground sheet layer 30 and the felt layer 20 is to be firmly bonded.

At this time, as illustrated in the accompanying drawings, by performing a riveting operation by the rivet 34 in the form of evenly distributed on the four sides and the center portion of the ground sheet layer 30, the overall upper and lower parts It is preferable that the sheet nets 31 and 32 and the felt layer 20 can be tightly bonded evenly without lifting portions. Of course, the number of the rivets 34 riveted to the ground sheet layer 30 and the felt layer 20 is not limited, it is natural that it is appropriately selected as necessary.

On the other hand, any one of the upper and lower sheet network (31, 32) constituting the ground sheet layer 30 On both left and right sides of one sheet net, a terminal connecting rod 40 having a plate-like structure to which the ground lead wire 42 for connecting the ground wire 62 of the pole 60 is connected is provided.

As a preferred embodiment of the present invention, the terminal connecting block 40 is shown as being coupled to both sides of the upper sheet net 31 in the exemplary embodiment shown in Figures 5-7, the lower sheet net 32 Even if the terminal connector 40 is coupled to have a functionally the same effect may be combined to either side.

That is, in order to make the accompanying drawings easier to understand, the upper and lower sheet networks 31 and 32 of the ground sheet layer 30 are divided on the basis of the accompanying drawings, but the terminal connection block 40 is not substantially connected. In the state, since both surfaces of the ground sheet layer 30 constituting the sheet-like ground plate 10 of the present invention have the same configuration, it is meaningless to distinguish the upper and lower portions of the ground sheet layer 30.

Therefore, hereinafter, it will be described that the terminal connecting block 40 is coupled to the upper sheet network 31 with reference to the accompanying drawings shown for convenience.

The terminal connecting block 40 is made of stainless steel, similar to the material of the upper and lower sheet nets 31 and 32, and has a plate-like structure projecting outwardly to the upper sheet net 31 by welding such as argon welding. It is preferable to join.

The terminal connecting portion 40 is a portion for connecting the ground lead wire 42, and the lead wire terminal portion 50 is interposed between the terminal connecting portion 40 and the ground lead wire 42.

The lead wire terminal portion 50 is a portion which is disposed between the terminal connecting portion 40 and the ground lead wire 42 to serve to interconnect with each other, and uses a compression terminal that is commonly used.

In the preferred embodiment of the present invention, as shown in Figures 8 and 9 show two embodiments according to the connection structure of the compression terminal by way of example.

As shown in FIG. 8, one end of the ground lead wire 42 is inserted into one side of the lead wire terminal 42 in a spiral state, and is compressed and fixed to the other side. Compression terminal 51 having a structure for fastening and bolting the terminal connecting bolt 52 between the bolt hole 41 and the terminal connecting block 40 in a state in close contact with the terminal connecting block 40 is used.

And, the lead wire terminal portion 50 according to another embodiment of the present invention is inserted into one side end of the ground lead wire 42 in a spiral state as shown in Figure 9 is compressed and fixed to the other side of the terminal connector 40 The compressed terminal 53 which is fitted to the joined terminal connecting nut 54 and screwed thereto is used.

As such, the connection between the terminal connection block 40 and the ground lead wire 42 may be variously modified according to the type of compression terminal used.

As described above, the ground lead wire 42 wired to the terminal connector 40 of the sheet-shaped ground plate 10 through the lead wire terminal part 50 is drawn out from the ground wire lead-out hole 61 of the pole 60 in the grounding process. The ground wire 61 and the sleeve 55 are connected to each other.

At this time, when the connection part by the compression terminal of the terminal connection block 40 and the ground lead wire 42 and the connection part by the sleeve 55 of the ground lead wire 42 and the ground wire 62 are exposed to the outside, the present invention When the sheet-shaped ground plate 10 is buried in the ground through the grounding construction of the electric pole 60, the above-mentioned connection part is in contact with moisture in the ground, and corrosion occurs quickly, thereby increasing the possibility of impairing the grounding function.

Therefore, the present invention is to cover the protective valve (56, 57) in order to prevent the corrosion as described above to perform a complete sealing operation.

As the protective tubes 56 and 57, it is preferable that a heat shrink tube or a self shrink tube that is commonly used for conventional use.

On the other hand, the sheet-like ground plate 10 according to the present invention having a configuration as described above may be variously modified and may take various forms, it is preferable that the design is designed in consideration of the ground plate standard commonly used. .

For example, the felt layer 20 and the ground sheet layer 30 may be formed of a conventional conductive ground plate. In consideration of the specification, it is preferable that the length is approximately 60 cm to about 150 cm and the length is about 20 cm to 60 cm, respectively, but is not necessarily limited to such a standard.

At this time, it is preferable that the thickness of the felt layer 20 has a thickness of about 5 kPa to 30 kPa in consideration of economical efficiency of materials, but this is not necessarily defined as ½: the same thickness as described above.

Substantially, the larger the size (width) of the felt layer 20 and the ground sheet layer 30 and the larger the thickness of the felt layer, the greater the folding ability of the sheet-shaped ground plate 10. Therefore, the size of the felt layer 20 and the ground sheet layer 30 can be changed at any time according to the manufacturing needs, but considering the economical efficiency of the product and the overall specifications of the product, it is preferable to be manufactured in the above-described exemplary standard. It can be done.

However, by manufacturing the above-described exemplary standard, it is possible not only to maximize the reduction effect of the increase in comparison with the conductive ground plate made of conductive concrete, which is currently commercially available, but also to easily implement the storage and transportation movement. Will have.

That is, according to the present invention, the overall size of the sheet-shaped ground plate 10 is natural that can be designed in various ways depending on the intended use.

Thus, by forming a very thin thickness of the sheet-shaped ground plate 10, it can be significantly reduced compared to the weight of the ground rod or ground plate containing a conventional conductive concrete (not shown), of the sheet-shaped ground plate 10 As it reduces its own weight relatively large, it is not only easy to carry, but also has the advantage of greatly improving workability due to weight reduction when grounding. For example, the weight of the ground rod or ground plate containing a conventional conductive concrete is mostly made of about 10kg ~ 20kg, the sheet-shaped ground plate 10 of the present invention can be produced in about 2kg ~ 3kg to significantly reduce the weight There are advantages to it. In addition, since the sheet-shaped ground plate 10 of the present invention consists only of a felt layer 20 made of carbon felt having excellent corrosion resistance and a ground sheet layer 30 made of stainless steel, a felt layer having high moisture absorption and high electrical conductivity. (20) can fully realize the grounding performance required by the grounding construction, and once the grounding construction for the pole (60) itself is installed, its durability and grounding performance must be maintained for a long time to improve the reliability of the product. The sheet-shaped ground plate 10 of the present invention in terms of being capable of maximizing corrosion resistance more.

Sheet-like ground plate 10 according to the present invention having the configuration as described above may double the grounding capability by connecting in series as necessary, as shown in FIG. 11 to 13 show a state in which the sheet-shaped ground plate 10 according to the present invention having the above configuration is grounded on the pole 60.

Looking at this briefly, Figure 11 shows a method of grounding construction standing on the side of the pole-shaped ground plate (10) all poles 60 in accordance with the present invention.

As shown in FIG. 11, a pit 71 of a certain depth is dug in the ground 70 to erect the pole 60.

Then, the sheet-shaped ground plate 10 in the pit 31 in the lower side portion portion of the pole 60 is built up in the longitudinal direction to be embedded, in this case, the operator is connected to one side of the sheet-shaped ground plate 10 terminal ground ( The ground lead wire 42 is connected to the ground lead wire 42 by a compression terminal 51 or 53, and the ground lead wire 42 thus wired is pulled out of the ground wire lead-out hole 61 of the pole 60. By connecting to 55, the connection work for grounding between the pole 60 and the sheet-shaped ground plate 10 is made simple.

Of course, at this time, the connection portion of the terminal connecting portion 40 and the ground lead wire 42 and the connection portion of the ground lead wire 42 and the ground wire 62 are protective valves 56 such as a heat shrinking flow valve or a self shrinking tube to prevent corrosion. 57) to seal it completely. Then, the sheet-shaped ground plate 10, the ground connection work is completed as described above is arranged in the longitudinal direction in the pit 71 on the side of the pole 10, in this state smoothly the pole 60 in the pit 71 After the building, the pit 71 is filled and firmly compacted. Finally, the grounding work is completed with the embedding of the pole 60.

At this time, as shown in FIG. 11, the grounding construction may be performed in a state in which the sheet-shaped ground plate 10 is erected in the pit 71 in the longitudinal direction, but as shown in FIG. It may be arranged in a structure that is bent in the shape of i) and wraps the side surface of the pole 60 in an equilateral arc shape.

That is, as the pit 71 for erecting the pole 60 is excavated in a cylindrical shape, the sheet-shaped ground plate 10 is bent in an equilateral arc shape in accordance with the cross-sectional structure of the cylindrical pole 60 and the pit 71. When arranged, it has the advantage of maintaining a more stable posture when the sheet-shaped ground plate 10 in the pit 71 in the longitudinal direction.

Of course, in this case, as shown in FIG. 12, the ground lead wire 42 of the sheet-shaped ground plate 10 and the ground wire 61 of the electric pole 60 are connected to each other and grounded. same.

On the other hand, Figure 13 is a method of grounding the sheet-like ground tube 10 according to the present invention in a state buried under the pole 60 is shown.

That is, as shown in Fig. 13, when excavating the pit 71 for mounting the pole 60 in the ground 70 to excavate to a deep depth to bury the sheet-shaped ground plate 10, The ground wire 62 drawn from the pole 60 and the ground lead wire 42 of the sheet-shaped ground plate 10 are connected to the sleeve connecting portion 55 to complete the grounding state. 10) spread out, and then pour earth and sand first to bury the sheet-shaped ground plate (10), and then finally fill the pit (71) with the pole (60) straight in the pit (71), grounding You will complete the construction.

Of course, in this case also the connection of the ground lead wire 42 and the ground wire 62 in the ground connection process Naturally, the parts and the connection parts of the terminal connecting part 40 and the ground lead wire 42 are completely sealed with protective tubes 56 and 57, respectively, to prevent corrosion.

As described above, according to the present invention, since the sheet-type ground plate 10 is arranged in a simple operation in the pre-drilled pit 71 as described above, the ground rods are separately installed on the side where the conventional pole is embedded. It is relatively easy compared to the method, and the overall construction is easy to minimize the work cost.

As described above, the technical idea of the sheet-shaped ground plate 10 according to the present invention has been described with the accompanying drawings, but this is by way of example and not by way of limitation of the present invention.

In addition, it is obvious that anyone with ordinary skill in the art can make various modifications and imitations without departing from the scope of the technical idea of the present invention.

Claims

[Range of request]

1. In the sheet-type ground plate which can be grounded by connecting to the ground wire 62 drawn out from the pole 60,

Upper and lower sheet networks 31 and 32 having a mesh network structure of the same size provided with a terminal connector 40 for connecting a ground lead wire 42 for connecting with the ground wire 62 of the pole 60. Ground sheet layer 30 made of a, a felt layer 20 made of carbon felt inserted into the same size between the upper and lower sheet network 31, 32, the felt layer 20 and the ground sheet layer 30 ) A sheet-type ground plate comprising a plurality of rivets (34) for coupling and fixing between the upper and lower sheet nets (31, 32) in a riveting operation so as to be able to be fixed to be in close contact with each other.

2. The ground sheet layer 30, upper and lower sheet meshes (31, 32), the terminal connector 40 is made of stainless material, the terminal connector 40 is the upper, lower sheet A sheet-like ground plate, characterized in that each of the meshes (31, 32) is coupled to each other by welding on either side of the sheet mesh.

3. The method according to claim 1 or 2, wherein the connection between the terminal connecting block 40 and the ground lead wire 42 is connected and wired to the lead wire terminal part 50 made of the compression terminals 51 and 53, and the ground wire ( The connection between the 62 and the ground lead wire 42 is connected and connected by the sleeve 55, and the protection tubes 56 and 57 for preventing corrosion are respectively provided at the connection portions of the lead terminal 50 and the sleeve 55, respectively. A sheet-type ground plate, characterized in that wrapped in a completely sealed form.