KR20100122294A - Ground connection resistance measurement device that top and bottom difference is possible - Google Patents

Abstract

PURPOSE: A ground resistance measuring device which vertically moves is provided to extend the lifetime of a ground facility by grasping materials which causes corrosion. CONSTITUTION: A movement support unit(110) is perpendicularly installed on an underground space and has a vertical movement space(112) which is opened in a vertical direction. A transfer screw unit(120) is included in the movement support unit and vertically moves by the rotation. A rotation operation unit(130) vertically moves the transfer screw unit along the rotation direction. A resistance measuring unit(140) is axially combined with the transfer screw unit and measures ground resistance by the contact with an connection electrode(142). A position selecting unit(150) is connected to the resistance measuring unit with a wire and controls a bending degrees inward.

Description

Ground connection resistance measurement device that top and bottom difference is possible}

The present invention relates to an earth resistance measuring apparatus capable of vertical movement of a vertical type, and more particularly, a ground resistance capable of vertical movement for verifying the accuracy of the earth resistivity analysis of a vertical structure and a multilayer structure of a location where a grounding facility is to be installed. It relates to a measuring device.

In general, ground (ground) means to electrically connect a terminal to the ground, and the ground electrode serves as the electrical terminal.

In other words, whether the electrical equipment is grounded to the ground through the ground wire and the ground electrode easily flows when the current flows through the electrode to the ground depends on the ground resistance.

In order to protect the electrical facilities and to prevent electric accidents, the electrical installations must be grounded according to the regulations, and the grounding works must be correctly constructed to keep the resistance within the specified values.

In this case, it is necessary to extend the potential drop method commonly used to obtain the ground resistance value in the ground work, to acquire ground resistance variation data in the same area, and to apply the rate of change in the ground design of the similar area.

In the ground resistance measurement method using the potential drop method, an auxiliary current electrode is provided at a distance sufficiently separated from the electrode to which the ground resistance is measured, an auxiliary potential electrode is provided between the measurement target electrode and the auxiliary current electrode, and the measurement target electrode and the auxiliary current A current is applied between the electrodes, and the ground resistance of the measurement target electrode is measured by the potential difference V generated between the measurement target electrode and the auxiliary potential electrode.

When the auxiliary potential electrode is gradually moved from the position of the electrode to be measured to the position of the auxiliary current electrode, when the auxiliary potential electrode is located near the measurement electrode or at the position of the current auxiliary electrode, it is applied to the current I applied for measurement. Due to the superposition of the electric field, a sudden change occurs, and the auxiliary potential electrode has a fixed value when a constant distance is maintained from the measurement target electrode and the auxiliary current electrode.

The potential drop method is based on the assumption that the earth is uniform. However, in order to measure the earth resistance in the earth having a multi-layered structure, the earth must be sufficiently spaced apart from the measurement target electrode and the auxiliary current electrode. It is necessary to find the position where the ground resistance is stably measured by moving the ground resistance several times, but it causes inconvenience that the measurer must move and measure and record several times in the field.

In addition, the position of the auxiliary current electrode spaced apart according to the depth of the pour electrode is changed, and the position of the auxiliary potential electrode is also changed, at this time, the reliability of the ground resistance value is determined according to the expertise of the field measurer.

The present invention has been made in view of the above problems, and an object thereof is to provide an earth resistance measuring apparatus capable of moving up and down for verifying accurate earth resistivity measurement and analysis of a reliable ground rod placing region in a multi-layer earth structure. Is in.

In addition, the ground resistance data for each grounding facility can be sequentially applied to the grounding work, regardless of the grounding construction method such as the potential dropping method, for the grounding body at various points within the area selected as the grounding facility installation area. An object of the present invention is to provide an earth resistance measuring apparatus capable of moving up and down.

According to an aspect of the present invention, there is provided a ground resistance measuring apparatus capable of vertically moving, including: a moving support part provided with a vertical moving space vertically standing in a ground space and having a cylindrical side open in a vertical length direction; A feed screw part included in the moving support part and vertically standing up and down to provide vertical movement in which a rotation operation is performed; A rotation manipulation unit configured at an upper end of the movement support unit to vertically rotate the feed screw unit vertically in the rotation direction; Resistance measurement for measuring ground resistance by contact between the excavated earth and the connecting electrode having two angles of bending from the horizontal to the inward direction by being coupled to the screw shaft on the feed screw part and the shaft to be moved up and down in the rotation direction of the rotary operation part. Wealth; A ground resistance measuring device comprising: a position selection unit connected to the resistance measuring unit by a wire to adjust a degree of bending in a horizontal direction inward.

Here, the resistance measuring unit and the upper screw member constituting a moving module for vertical movement to be coupled directly to the screw shaft and the feed screw; A lower thin member which is connected to the upper thin member and constitutes an electric wire connecting module therein, and which has an excavated ground and a connecting electrode in front; The rotating arm formed to face the through hole at the tip of the upper and lower members and the rotating arm formed to face the through hole at the rear end of the lower member are inserted into the rotating arm and the rotating shaft is coupled to the horizontal through hole to allow bending at an inward direction. Structure.

In addition, the grounding resistance measuring device is vertically erected in the center of the underground space, while one side of the cylindrical shape is vertically placed inside the vertical moving space opened at both sides in the vertical length direction, thereby providing vertical movement in which the rotation operation is performed. A bidirectional moving support unit; The resistance measuring parts respectively positioned in the vertical moving spaces formed on both sides of the bidirectional moving support part are moved up and down by the rotation manipulation part, and the resistance measuring parts are bent from both sides horizontally and inwardly by the position selection so that the two sides of the earth are excavated; It is a structure composed of a bidirectional ground resistance measuring device for measuring ground resistance by contact of a connecting electrode.

According to the present invention as described above, by grasping the components (porosity, etc.) of the earth constituted within the layer structure of the earth structure, it is possible to determine the presence or absence of a substance causing corrosion and to extend the life of the grounding facility and to operate a stable earthing system. It has the effect of enabling it.

In addition, it is possible to increase the accuracy of the earth model by measuring the vertical resistivity and depth data of the multi-layer structure for earth resistivity measurement and to reduce the material by grasping the porosity of the surrounding earth structure after placing the grounding facility. It is possible to calculate the part which greatly affects each floor when pouring spilled or grounded connection type grounding structure of the grounding facility.

In addition, it is a portable device with a structure that can be assembled on site, and the ground resistance measuring device is installed in the underground space perforated vertically to the ground, and the data is obtained through a modular electrode automatic device that can acquire data while moving up and down. Improved reliability of grounding design with improved reliability Vertical type grounding resistance measuring device can be applied to general grounding work regardless of grounding construction method such as potential dropping method, thereby securing economical efficiency through low-cost grounding work. There is.

In addition, the ground resistance measuring device installed in the underground space perforated in the vertical direction to the ground is a very useful invention because there is an effect that can be measured in the case of the measuring point 1 to the measuring point 4 or more in the drilling position in the expandable structure.

The configuration of the present invention for achieving the above object,

A moving support part which is vertically erected in the underground space and has a vertical moving space in which one side of a cylindrical shape is opened in a vertical longitudinal direction;

A feed screw part included in the moving support part and vertically standing up and down to provide vertical movement in which a rotation operation is performed;

A rotation manipulation unit configured at an upper end of the movement support unit to vertically rotate the feed screw unit vertically in the rotation direction;

Resistance measurement for measuring ground resistance by contact between the excavated earth and the connecting electrode having two angles of bending from the horizontal to the inward direction by being coupled to the screw shaft on the feed screw part and the shaft to be moved up and down in the rotation direction of the rotary operation part. Wealth;

It is achieved by providing a ground resistance measuring device capable of vertical movement, characterized in that the ground resistance measuring device consisting of; a position selection unit for connecting the resistance measuring unit and the wire to adjust the degree of bending in the horizontal direction.

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

Prior to this, terms or words used in the present specification and claims should not be construed as being limited to the common or dictionary meanings, and the inventors should properly explain the concept of terms in order to best explain their own invention. Based on the principle that can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention.

Therefore, the embodiments described in the specification and the drawings shown in the drawings are only one of the most preferred embodiments of the present invention, and do not represent all of the technical spirit of the present invention, it is possible to replace them at the time of the present application It should be understood that there may be various equivalents and variations.

1 is a perspective view showing the configuration of a ground resistance measuring apparatus capable of vertical movement according to the present invention.

As shown, the vertical grounding resistance measuring apparatus 100 for calculating the grounding resistance according to the present invention is grounded in the underground space 10 perforated in the vertical direction to the ground as a device that is convenient to carry in a structure capable of field assembly Modular connection electrode 142 that can acquire data while installing resistance measuring device 100 and moving in the vertical direction. Vertical type grounding resistance measuring device 100 which improves the accuracy of ground design by improving data reliability through automatic device. Is applicable to overall grounding work regardless of grounding construction method such as potential drop method.

Here, the ground resistance measuring device 100 can be applied to obtain the data necessary for the measurement through the wire connected to the connection electrode 142 basically, it is provided with a temperature, humidity and pH sensor.

In the ground resistance measuring apparatus 100, the movable support part 110 is vertically erected in the underground space 10 drilled in the vertical direction on the ground.

The movable support part 110 has a cylindrical shape and a vertical movement space 112 is opened in a vertical length direction with a predetermined width.

At this time, the conveying screw 120 is vertically contained in a predetermined space provided in the moving support 110, the rotation is made to provide vertical movement up and down.

That is, the transfer screw unit 120 receives the rotational power of the rotation operation unit 130, but the rotation operation is made.

In addition, the rotation manipulation unit 130 is configured on the upper end of the movement support unit 110 to rotate vertically rotate the feed screw 120 in accordance with the rotation direction.

That is, the rotation manipulation unit 130 is gear meshed with the transfer screw unit 120 so as to convert the rotational movement into a linear movement while having a rotary knob 132 on the upper portion of the movable support unit 120, the rotary knob 132 In accordance with the rotational direction of the feed screw 120 is to make a vertical movement in the vertical direction.

In addition, the resistance measuring unit 140 coupled to the screw shaft on the feed screw 120 and the shaft is moved up and down in accordance with the rotation direction of the rotary operation unit 130 is excavated having a two-angle bend in the horizontal direction inward The ground resistance is measured by the contact between the earth and the connection electrode 142.

As such, the resistance measuring unit 140 and the conveying screw unit 120 are configured to be coupled to each other so that the conveying screw unit 120 is rotated by the rotation of the rotation manipulation unit 130, and the rotational movement of the conveying screw unit 120 is achieved. The resistance measuring unit 140 is converted into a linear motion to move up and down, so that the resistance measuring unit 140 vertically moves in the vertical movement space 112.

The resistance measuring unit 140 is provided in the vertical moving space 112 of the moving support part 110 to be vertically guided along the vertical moving space 112 to rotate the rotary knob 132 of the rotary manipulation unit 130. According to the direction, the resistance measuring unit 140 may move up and down between the vertical moving spaces 112.

In addition, the resistance measuring unit 140 is capable of bending two angles in the horizontal direction inward, it consists of the upper and lower members 144 and lower members 143, the inner bending is possible to move two angles as the movement of the arm.

The upper and lower members 144 of the resistance measuring unit 140 are directly coupled to the feed screw unit 120 to constitute a moving module for vertical movement.

In addition, the wire and the connecting electrode 142 are formed in front of the lower member 146 by configuring the wire connection module therein by being connected to the upper member 144 and moving at an inner bending angle.

Here, the connection between the upper and lower members 144 and the lower member 146 is formed of the pivot arm 143 and the lower member 146 formed to face a through hole at the tip of the upper and lower members 144, as shown in FIG. The rotating arm 145 formed to face the through hole at the rear end is inserted into the rotating arm 143 so that the rotating shaft 147 is coupled to the horizontal through hole to be bent in two directions.

In this way, the upper and lower members 144 and lower members 146 of the resistance measuring unit 140 is composed of a rotation arm 143 and the rotating arm 145 is bent in a horizontal direction inwardly around the rotation axis 147 Two-angle movement is possible.

Here, when the upper and lower members 144 and lower members 146 of the resistance measuring unit 140 has a bent two angles, the resistance measuring unit 140 and the wire 152 are moved to adjust the angle. The position selector 150 configured at one side of the support unit 110 adjusts the angle of bending in the horizontal direction of the resistance measuring unit 140.

That is, the position selection unit 150 is configured on the upper end of the moving support 110 to adjust the bending angle of the upper and lower members 144 and the lower member 146 according to the rotation direction of the adjustment knob 154. The bending angle is possible by connecting the wires 152 between the selector 150 and the upper and lower members 144 and 146.

Such, the ground resistance measuring device 100 of the present invention is configured in a structure that can be assembled in the field to install a ground resistance measuring device 100 in the underground space 10 excavated in the field as a convenient device to carry the resistance in the vertical direction The ground resistance data can be acquired while the measuring unit 140 is moved.

Here, the upper and lower members 144 according to the width while moving the upper and lower members 144 and the lower and lower members 146 of the resistance measuring unit 140 according to the width according to the width of the bending angle of the resistance measuring unit 140. Ground contact is possible by adjusting the spreading angle of the lower thin member 146 and the ground resistance can be measured.

In addition, the lower resistance member 146 and the upper resistance member 144 constituting the connection electrode 142 in the ground resistance measuring apparatus 100 can adjust the angular direction through the position selection unit 150 at the time of falling or rising. It is possible to move freely inside the basement.

In addition, when the ground resistance is measured by the ground resistance measuring apparatus 100 and then returned, the angle of the upper and lower members 144 and the lower members 146 of the resistor device 140 is increased through the position selection unit 150. Let's do it.

Hereinafter will be described the operation of the vertical ground resistance measuring device having the configuration as described above.

3 is a state diagram used in the underground space of the earth resistance measuring apparatus capable of vertical movement according to the present invention.

As shown in the figure, the ground resistance measuring apparatus 100 of the present invention before the movable support 110 is vertically erected in the underground space 10 is introduced into the ground where the resistance measuring unit 140 is excavated For smooth vertical movement, the position selector 150 is rotated to closely contact the lower thin member 146 of the resistance measuring unit 140 by adjusting the angle toward the upper thin member 144.

This is to adjust the angle for safely moving the excavated ground surface of the resistance measuring unit 140 moving up and down along the moving support unit 110.

Then, the feed screw 120 is rotated by the rotation of the rotary knob 132 to lower the resistance measuring unit 140 to the position to measure the ground resistance.

When the resistance measuring unit 140 reaches a predetermined position in the ground space 10 to measure the ground resistance, the upper and lower members 144 and the lower thin member 146 of the resistance measuring unit 140 which are bent inside are stopped. The upper and lower members 144 and the lower members 146 are horizontally spread by rotating the position selector 150.

The upper thin member 144 and the lower thin member 146 of the resistance measuring unit 140 are unfolded to make contact with the ground on which the connection electrode provided in front of the lower thin member 146 is excavated to measure the ground resistance.

Then, the position selector 150 is rotated to move to the next point, and the upper and lower members 144 and lower members 146 are brought into close contact again, and the resistance measurement unit 140 is vertically moved by the rotation of the rotary knob 132. It descends between the spaces 112.

When the resistance measuring unit 140 reaches a predetermined position to be lowered to measure the ground resistance, it stops, and the upper and lower members 144 and the lower thin member 146 of the resistance measuring unit 140 which are bent inside are positioned and selected. The upper and lower members 144 and the lower members 146 are horizontally spread by the rotation of the inside of the cabinet.

In addition, the upper thin member 144 and the lower thin member 146 of the resistance measuring unit 140 are unfolded to make contact with the ground where the connection electrode 142 provided in front of the lower thin member 146 is excavated to measure ground resistance. Done.

Such a ground resistance measuring apparatus 100 is capable of measuring repeatedly in the underground space 10 to be infinitely measured while moving vertically and vertically.

In addition, the ground resistance measuring device 100 may be configured to be detachably assembled in the field, and the upper and lower members 144 of the resistance measuring unit 140 according to the width by the bending angle of the resistance measuring unit 140. By moving the lower foil member 146 in an foldable manner, it is possible to adjust the spread angles of the upper foil member 144 and the lower foil member 146 according to the width so that the ground contact can be measured.

In addition, the resistance measuring unit 140 can be replaced in the ground resistance measuring apparatus 100 by configuring the resistance measuring unit 140 having a different size according to the shape or size of the underground space 10. The ground resistance can be measured by

In this way, the ground resistance measuring apparatus 100 of the present invention is put into the underground space 10 to contact the ground, the resistance measuring unit 140 applies a force in a direction perpendicular to the ground to support the connection electrode 142 You will be in full contact with.

In addition, the grounding resistance measuring apparatus 100 is a structure in which the electrode 142 of the resistance measuring unit 140 can repeatedly move the electrode in order to acquire more accurate data on earth conditions such as rocks, and transmits the measured value to the main processor. It is a structure to convey.

In addition, the ground resistance measuring apparatus 100 according to the present invention calculates the data value according to the measurement of the connection electrode through a data calculator through a measurement controller (not shown).

In another embodiment, the earth resistance measuring apparatus of the present invention for measuring in the underground space,

4 is a view showing the configuration of the bidirectional ground resistance measuring apparatus of another embodiment of the ground resistance measuring apparatus capable of vertical movement according to the present invention.

As shown in the figure, the ground resistance measuring device 100 is composed of a bidirectional ground resistance measuring device 200, the bidirectional moving support portion 210 is erected perpendicularly to the underground space 10 while the cylindrical one side is The conveying screw part 120 is erected perpendicularly to the inside of the vertical moving space 112 opened at both sides in the vertical longitudinal direction, thereby providing vertical movement in which the rotation operation is performed.

In addition, the resistance measurement units 140 respectively positioned in the vertical movement spaces 112 formed on both sides of the bidirectional movement support unit 210 are moved up and down by the rotation manipulation unit 130 to measure resistance by the position selector 150. The unit 140 is horizontally spread in both directions in the inward direction to measure the ground resistance by contact between the excavated earth and the connection electrode 142.

That is, in the bidirectional ground resistance measuring unit 200 constituting the bidirectional moving support unit 210, the bidirectional moving support unit 210 is vertically erected at the center of the underground space 10 so that the resistance measuring unit 140 is located at both left and right sides thereof. Rotate the position selector 150 to smoothly move vertically before flowing into the excavated land, and the lower member 146 of the resistance measurement unit 140 respectively configured on both sides is in close contact with the upper arm member 144.

Then, the feed screw 120 is rotated by the rotation of the rotary knob 130 to lower the resistance measurement unit 140 on both sides to the position to measure the ground resistance.

When the resistance measuring unit 140 located at both sides reaches a predetermined position to measure the ground resistance to the left and right sides in the ground space 10, the upper and lower members of the resistance measuring unit 140 at both sides which are bent inwardly ( 144 and the lower thin member 146 rotates the position selection unit 150 so that the upper thin member 144 and the lower thin member 146 are horizontally spread in both directions.

In addition, the upper thin member 144 and the lower thin member 146 of the resistance measuring unit 140 on both sides are unfolded to make contact with the earth where the connection electrode 142 provided in front of the lower thin member 146 is excavated, thereby improving ground resistance. Will be measured.

As described above, the bidirectional ground resistance measuring apparatus 200 including the resistance measuring unit 140 on both sides is capable of repeatedly measuring vertically moving up and down, and can measure both measuring points in the underground space 10 indefinitely.

That is, the ground resistance measuring apparatus 100 installed in the underground space 10 drilled in the vertical direction to the ground can be measured in the case of the measuring point 1 to the measuring point 4 or more at the drilled position in an expandable structure.

In addition , the bidirectional ground resistance measuring apparatus 200 is a system that can improve the reliability by measuring a lot of data by installing a connection electrode of two or more electrodes having a two-fold bending operation in both directions at a desired position along the interface of the earth will be.

In addition, the bidirectional ground resistance measuring device 200 has a bi-directional moving support unit 210 is located in the center, the resistance measuring unit 140 is located on both sides of the bi-directional moving support unit 210 form a multi-connected electrode is possible. To maintain balance.

Here, the servo motor 220 and the inside of the movable support unit 110 and the bidirectional movable support unit 210 respectively configured in the ground resistance measuring device 100 and the bidirectional ground resistance measuring device 200 are shown in FIG. 5. Consisting of the transfer unit 222 is connected to the upper and lower slides, it is possible to vertically slide vertically and vertically in the vertical moving space 112 by the control of the control controller 230 to easily slide the desired position in the underground space. .

This is for precisely adjusting the sliding movement of the resistance measuring unit 140 up and down by the servo motor 220 in the ground resistance measuring device 100 and the bidirectional ground resistance measuring device 200, respectively.

By the ground resistance measuring apparatus 100 of the present invention as described above it is possible to secure the ground resistance value in the earth structure of the vertical structure can be predicted the possibility of reducing agent leakage.

In addition, the grounding resistance measuring apparatus 100 of the present invention can be applied to the overall grounding construction regardless of the grounding construction method such as the potential drop method is secured economic performance by performing a low-cost grounding construction.

As described above, specific preferred embodiments of the present invention have been described, but the present invention is not limited to the above-described embodiments, and various modifications by those skilled in the art to which the present invention pertains are described below. It should be said that they fall within the claims of the present invention as claimed.

1 is a perspective view showing the configuration of a ground resistance measuring apparatus capable of vertical movement according to the present invention.

2 is a view showing the operation of the resistance measuring unit of the earth resistance measuring apparatus capable of vertical movement according to the present invention.

3 is a use state diagram installed in the underground space of the earth resistance measuring apparatus capable of vertical movement according to the present invention.

Figure 4 is a view showing the configuration of the bidirectional ground resistance measuring apparatus of another embodiment of the ground resistance measuring apparatus capable of vertical movement according to the present invention.

5 is a conceptual diagram schematically showing an automatic sliding movement configuration of another embodiment of the earth resistance measuring apparatus capable of vertical movement according to the present invention.

* Description of the symbols for the main parts of the drawings *

10: underground space 100: grounding resistance measuring device

110: moving support part 112: vertical moving space

120: feed screw portion 130: rotation operation portion

132: rotary knob 140: resistance measurement unit

142: connection electrode 143: rotating arm

144: upper arm 145: rotation arm

146: Habakkuk member 147: rotary shaft

150: position selection 152: wire

154: Adjustment knob 200: Bidirectional earth resistance measuring device

210: two-way movement support part 220: servo motor

222: transfer unit 230: control control unit

Claims (10)

In the vertical type grounding resistance measuring device for calculating the vertical grounding resistance installed in the underground space bored in the vertical direction to the ground, A moving support part 110, which is vertically erected in the underground space 10, and has a vertical moving space 112 open at one side of a cylindrical shape in a vertical longitudinal direction; A conveying screw part 120 which is vertically erected while being included inside the moving support part 110 to provide vertical movement in which rotational motion is performed; A rotation manipulation unit 130 configured at an upper end of the movement support part 110 to vertically rotate the feed screw part 120 in the vertical direction according to the rotation direction; The ground and the connection electrode 142 which are excavated with two angles bent in a horizontal direction to the inner side by being coupled to the screw shaft on the feed screw unit 120 and the shaft is moved up and down in the rotational direction of the rotary operation unit 130 A resistance measuring unit 140 measuring ground resistance by contact; A position selector 150 connected to the resistance measuring unit 140 and a wire 152 to adjust a degree of bending in a horizontal direction to an inward direction; Grounding resistance measuring device 100; Ground resistance measuring device which can move up and down characterized by. The method of claim 1, The transfer screw unit 120, Receiving the rotational power of the rotation operation unit 130 but the rotation operation is performed by the resistance measuring unit 140 and the feed screw unit 120 is engaged to convert the rotational movement into a linear movement resistance measurement unit 140 is vertical Vertical resistance moveable grounding resistance device, characterized in that it comprises vertical movement in the moving space (112). The method of claim 1, The rotation operation unit 130, The gear screw 120 and the rotational movement is converted into a linear motion gear is provided with a rotary knob 132 in the upper portion of the movable support unit 110, according to the rotation direction of the rotary knob 132 ( 120 is a ground resistance measuring device capable of vertical movement, characterized in that it comprises a linear movement in the vertical direction. The method of claim 1, The resistance measuring unit 140, Upper and lower members (144) constituting a moving module for vertical movement by being coupled directly to the screw shaft 120 and the feed screw; A lower thin member 146 which is connected to the upper thin member 144 and constitutes a wire connection module therein and is configured with an excavated ground and a connecting electrode 142 in front; The rotating arm 143 formed to face the through hole at the tip of the upper and lower members 144 and the rotating arm 145 formed to face the through hole at the rear end of the lower member 146 are embedded in the rotating arm 143 to be horizontal. Rotating shaft 147 is coupled to one through hole is to include two angles that can be bent inwardly Ground resistance measuring device which can move up and down characterized by. The method of claim 1, The location selection unit 150, It is configured on the upper end of the movable support 110, and adjusts the bending angle of the upper and lower members 144 and lower members 146 according to the rotation direction of the adjustment knob 154, the position selection unit 150 and the upper and lower arm members (144) (146) Up and down movable grounding resistance measuring device, characterized in that it comprises a bend angle adjustment is possible by the connection between the wires (152). The method of claim 5, The location selection unit 150, Up and down the ground resistance measuring device, characterized in that it comprises adjusting the angle for the safe movement of the excavated ground surface is the resistance measuring unit 140 to move up and down along the moving support portion (110). The method of claim 1, The ground resistance measuring device 100, Vertically moved vertically in the vertical space of the vertical movement space 112, which is vertically erected in the center of the underground space 10 and one side of the cylindrical opening is opened on both sides in the vertical longitudinal direction, the vertical movement of the vertical movement Bi-directional moving support unit 210 to provide; The resistance measuring units 140 respectively positioned in the vertical moving spaces 112 formed on both sides of the bidirectional moving support unit 210 are vertically moved by the rotation manipulation unit 130, and the resistance measuring unit 150 is positioned by the position selecting unit 150. It characterized in that it comprises a; bi-directional ground resistance measuring device 200 for measuring the ground resistance by the contact of the ground and the connection electrode 142 of the excavated both sides having two angles bent in both horizontal and inward direction on both sides; Earth resistance measuring device that can move up and down. The method according to claim 1 or 7, The transfer support unit 110 is connected to the servo motor 220 inside the movable support unit 110 and the bidirectional support unit 210 respectively configured in the ground resistance measuring device 100 and the bidirectional ground resistance measuring device 200. Up and down movable grounding resistance device characterized in that it comprises a vertical vertical sliding movement in the vertical movement space 112 by configuring. The method according to claim 1 or 7, The grounding resistance measuring device 100 and the bidirectional grounding resistance measuring device 200 are free to move vertically and move vertically and vertically in the ground space to repeatedly measure the measurement point in the ground space 10. An earth resistance measuring device capable of moving up and down, characterized in that it comprises a thing. The method according to claim 1 or 7, The grounding resistance measuring device 100 and the bidirectional grounding resistance measuring device 200 may be detachably assembled so that the resistance measuring part 140 may be configured to have different sizes according to the shape and size of the underground space 10. It is possible to replace the 140 in the ground resistance measuring device 100 and the bidirectional ground resistance measuring device 200 to be introduced into the various underground spaces 10, including measuring the ground resistance Ground resistance measuring device which can move up and down characterized by.

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