KR101969948B1 - Grounding device for appling electric current to underground facility in order that electromagnetic exploration - Google Patents

Abstract

The present invention relates to a current grounding device for inducing a transmitter current to an underground facility in electromagnetic induction exploration capable of disassembling a grounding wire to an underground facility such as a pipe for water and sewage and the like without allowing a worker to directly enter into an underground pipe such as a manhole. The current grounding device for inducing a transmitter current to an underground facility in electromagnetic induction exploration comprises: a longitudinal bar which is erect to be inserted into an underground access road; a transverse bar rotatably connected to the longitudinal bar via an adapter and horizontally mounted on the ground; a conductive grabber fixed to a lower end of the longitudinal bar, opened and closed to hold and be in contact with the underground facility and electrically connected to a wire; and a handle fixed to an upper end of the longitudinal bar and configured to have a trigger to be interlocked to open and close the grabber.

Description

FIELD OF THE INVENTION [0001] The present invention relates to a grounding device for guiding a transmitter current to an underground facility during electromagnetic induction,

The present invention relates to a current grounding apparatus for guiding a transmitter current to an underground facility in an electromagnetic induction probe capable of disassembling a ground line to an underground facility such as a sewer or a sewer without directly entering an underground pipe such as a manhole .

A typical measurement method for exploration and measurement of underground facilities such as metallic water pipes or sewer pipes is the electromagnetic induction method (induction method).

According to the electromagnetic field rule (Maxwell's law), a magnetic field is formed around a conductor when an electric current flows through the conductor. An object through which electric current passes forms a concentric magnetic field. The size of the magnetic field depends on the intensity and distance . Therefore, the electromagnetic induction method amplifies the concentric magnetic field by the receiver and constructs it so that its size appears on the sound or indicator. The electromagnetic induction method is very useful as a method to measure the position and depth of buried pipelines and cables. It has a disadvantage that non-metallic pipe can not be detected. However, the probe can be partially used as a non- Because it is also possible to detect.

Plane position measurement and burial depth measurement are performed by electromagnetic induction method. Peak method and null method are used for plane position measurement.

In the maximum method, when the receiver is moved horizontally with respect to the conductor through which the current flows, the magnetic line of force progresses along the direction of the coil, so that a maximum signal (Peak Signal) occurs on the conductor. So that the magnetic line becomes smaller and the signal is reduced. That is, at the right angle to the closest of the buried conductors and in the correct arrangement, the current exhibits the highest response.

The minimum method is used to measure the approximate location of the underground facility (the highest point of the magnetic field strength) in a way that the receiver's numerical value is close to " 0 ". That is, when the receiver of the vertical antenna is vertically moved with respect to the buried object, the magnetic force line running in the axial direction of the coil is minimized, and a null signal is generated on the facility . In this way, it is possible to identify the location of the facility by the difference between the strong signal at both ends of the facility and the weak signal on the facility.

The depth of buried depth is measured by the maximum method at the top of the survey pipeline. After the two horizontal antennas are spaced apart (for example, 400 mm) by a double aerial (Twin Aerial Antenna) do.

However, in order to explore the underground facilities using the electromagnetic induction method, the operator had to connect the ground wire to the underground facility, and the operator had to enter the underground passage where the underground facility was located. However, most of the access roads were narrow channels such as manholes, and the depth of entry was also deep, so the operators had to suffer inconveniences during entry. In addition, since toxic gases are generated in the underground facilities, there are frequent cases where workers are fainted by toxic gases or even die when they enter the driveway.

On the other hand, at least two workers had to work in the field to check the electromagnetic field generated by applying current to the underground facility. In other words, the worker who applies and maintains the electric current in the underground facility and the worker who detects the underground location of the underground facility by detecting the electromagnetic field caused by the electric current application have to work in the field.

However, in order to search underground facilities distributed over a relatively large area, a lot of workers were required to work and work hours were required. As a result, there has been a problem that the burden of searching for underground facilities and the burden of labor costs are large.

Prior Art Document 1. Patent Publication No. 10-2017-0090706 (published on Aug. 20, 2018)

In order to solve the above problem, the present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a method of detecting an underground facility through an electromagnetic field observation, A current grounding device for inducing the transmitter current to the underground facility in the electromagnetic induction probe, which can collect the position of the underground facility by searching for the induction electromagnetic field as well as the current application operation to the underground facility, This is a problem to be solved.

According to an aspect of the present invention,

A longitudinal bar that is erectably insertable into an underground access road;

A transverse bar rotatably connected to the saddle bar via an adapter, the saddle horizontally resting on the ground;

A conductive wrapper secured to the lower end of the barrel, the conductive wrapper for holding and contacting the underground facility and electrically connected to the wire; And

A handle fixed to an upper end of the longitudinal rod and configured to be triggered to be interlocked to open the wrapper;

Is a current grounding device for guiding the transmitter current to an underground facility during electromagnetic induction survey.

According to the present invention, an operator can search for an induction electromagnetic field by applying an electric current to an underground facility even if an operator does not directly enter an underground space in which an underground facility is buried in order to search for an underground facility through an electromagnetic field observation. It is possible to collect the position of the underground facility by searching the induction electromagnetic field as well as the current application operation to the facility.

1 is a front view showing an operation of a current grounding apparatus according to a first embodiment of the present invention,
FIG. 2 is a view schematically showing an operator collecting the position of an underground facility using the current grounding apparatus according to the present invention, and FIG.
3 is a front view showing an operation of the current grounding apparatus according to the second embodiment of the present invention,
4 is a block diagram showing a configuration circuit of a current grounding apparatus according to the present invention,
5 is an exploded perspective view showing a structure in which a horizontal rod and a vertical rod are rotatably connected by an adapter configured in a current grounding apparatus according to the present invention,
Figs. 6 and 7 are sectional views showing the operation of the transverse bar shown in Fig. 5,
8 is a perspective view showing a state of a fixed foot constructed in a transverse bar according to the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other features and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings, There will be. The present invention is capable of various modifications and various forms, and specific embodiments are illustrated in the drawings and described in detail in the text. It is to be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

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

FIG. 1 is a front view showing an operation of a current grounding apparatus according to a first embodiment of the present invention. FIG. 2 is a schematic view showing a state where an operator collects the position of an underground facility by utilizing a current grounding apparatus according to the present invention. Fig.

The current grounding apparatus of the present embodiment includes: a rod 110 erected so as to be insertable into an underground access road H; A transverse bar 120 rotatably connected to the longitudinal bar 110 via an adapter 130 and horizontally seated on the ground G; An electrically conductive wrapper 140 secured to the lower end of the barrel 110 for opening and closing the underground facility D so as to be in contact with and electrically connected to the electric wire 122a; And a handle 150 that is fixed to the top end of the stem rod 110 and is configured to have a trigger 152 that interlocks the opening and closing of the wrapper 140. [

The operator W inserts the stem 110 into the underground facility D through the access road H and operates the handle 150 so that the rapper 140 catches and contacts the underground facility D do. At this time, the wrapper 140 is made of a conductive material, so that the electric current applied to the wrapper 140 is grounded to the underground facility D.

On the other hand, the transverse bar 120 is disposed perpendicularly to the longitudinal bar 110 as shown in Fig. 1 (b) and Fig. 2, so as to be seated on the entrance side ground G of the entrance road H. Here, the transverse bar 120 guides the electric wire 122a electrically connected to the wrapper 140 from the ground to the connection cord C drawn out from the transmitter (not shown), and the longitudinal bar 110 moves in the access road H Thereby maintaining a stable upright state.

Each configuration of the current grounding apparatus of the present embodiment will be described in more detail.

The end bar 110 is composed of a first tube 111 and a linker 112 movably inserted in the hollow of the first tube 111. The first pipe 111 is formed in a tubular shape so that the linker 112 which is an interlocking medium between the wrapper 140 and the handle 150 is not exposed to the outside and a wire 122a for passing a current through the wrapper 140, And is installed in the first pipe 111.

The transverse bar 120 is installed in the second tube 121 by applying a current to the second tube 121 and the electric wire 122a wired along the hollows of the first tube 111 and the second tube 121, (Not shown). The second tube 121 has a tubular shape such that the wire 122a is not exposed as in the first tube 111 of the stem 110 and the wire 122a is inserted into the second tube 121. [ Meanwhile, the connector 122 electrically connected to the wire 122a electrically connects the connection cord C and the wire 122a connected to the transmitter (not shown) And a removable structure. In the present embodiment, the connector 122 is a port type for connection with the connection cord C (see Fig. 7), but is not limited thereto.

Through the structure of the barb 110 and the transverse bar 120 described above, the wire 122a is inserted into the second tube 121 and the first tube 111 without being exposed to the outside, and is electrically connected to the wrapper 140 .

The wrapper 140 includes a first body 141 fixed to the lower end of the first tube 111, a first piece 142 formed to extend from the first body 141, And a second piece 143 that is rotatably connected to the first piece 142 and is connected to the linker 112 so as to be closed with the first piece 142 along the first direction. The first body 142 is a medium that rotatably connects the first piece 142 and the second piece 143 and is fixed to the first tube 111, (Not shown). The second piece 143 is rotatably connected to the first piece 142 and faces the first piece 142 so that the first piece 142 and the second piece 143 are rotated while being rotated with respect to each other . Therefore, when the first piece 142 and the second piece 143 are closed with each other, the first piece 142 and the second piece 143 are held in contact with the underground facility D. When the first piece 142 and the second piece 143 are opened to each other, Fall off. The first piece 142 and the second piece 143 may be made of a conductive material and the first piece 142 and the second piece 143 may be made of a conductive material. Alternatively, the wrapper 140 may be made of a conductive material, And the second part 143 may be made of a conductive material. The wrapper 140 of the present embodiment has the conductor panel P formed on the first piece 142 and the second piece 143 and the conductor panel P is electrically connected to the wire 122a.

The handle 150 includes a second body 151 fixed to an upper end of the first tube 111 and a trigger 152 connected to the linker 112 is rotatably connected to the second body 151 do. The second body 151 is a medium rotatably connecting the trigger 152 to the first tube 111 and the trigger 152 is rotatably connected to the linker 112. As a result, when the operator W grasps the trigger 152 by hand, the trigger 152 pulls the linker 112 while rotating about the second main body 151, and the linker 112 is pulled by the second 143 and is inserted into the first part 142 as shown in FIG. 1 (b) and FIG. As a result, the first part 142 and the second part 143 are held in contact with the underground facility D so that the electric current applied from the electric wire 122a flows through the first part 142 and the second part 143 ) To the underground facilities (D).

FIG. 3 is a front view showing the operation of the current grounding apparatus according to the second embodiment of the present invention, and FIG. 4 is a block diagram showing a configuration circuit of the current grounding apparatus according to the present invention.

The connector 122 of the current grounding apparatus of the present embodiment includes a first switch 122b for switching the current to the wire 122a and a switchboard 122c for distributing the current applied to the wire 122a to the wrapper 140 ).

When the connection cord (C) is connected to the connector 122, the current applied from the connection cord C is directly energized to the wire 122a. An electric shock may be caused to the worker W by applying a current to the wrapper 140 in a state in which the connection cord C is not in contact with the connector D. Even when the connection cord C is connected to the connector 122, The first switch 122b is formed in the connector 122 so that the current is not applied to the wire 122a when the worker W is ready for work so that the electric current is supplied to the wire 122a by controlling the first switch 122b .

On the other hand, the connector 122 may further include an electric switchboard 122c for distributing an electric current to the electric wire 122a. The power distribution board 122c can be driven by applying current to other devices as well as the wrapper 140. For this purpose, the power distribution board 122c can be a transformer, a rectifier, and the like.

Subsequently, the wrapper 140 switches the lamp 146 and the energization of the lamp 146 by the current distributed in the switchboard 122c, and the second switch 147, which is installed on the handle 150, .

As described above, the switchboard 122c constitutes a circuit for distributing electricity to the lamp 146 as well as the electric distribution to the rapper 140. The lamp 146 is connected to the access road H where the underground facility D is located ). At this time, since the ramp 146 of the present embodiment is installed in the rapper 140 connected to the underground facility D, the worker W can easily find the location of the underground facility D in the dark access road H , The rapper 140 can be connected to a desired position of the underground facilities D.

On the other hand, the second switch 147 for switching the current applied to the lamp 146 through the distribution of the switchboard 122c is installed on the handle 150 so that the operation of the worker W is easy.

The operator turns on the first switch 122b after holding the handle 150 of the current grounding apparatus and inserting the wrapper 140 into the access road H. When the position of the wrapper 140 is caught to some extent, 2 switch 147 is turned on to cause the lamp 146 to illuminate the access road H. In this state, the worker W operates the handle 150 to hold the wrapper 140 in contact with the underground facility D. Of course, the current of the wrapper 140 is grounded to the underground facility D, and the underground facility D is energized to induce the electromagnetic field.

On the other hand, the second body 151 constitutes a ring 155 for maintaining the present posture of the trigger 152. The hook 155 is brought into close contact with the second body 151 such that the trigger 152 pulled by the worker W to close the wrapper 140 is kept in the prede- termined state, The rapper 140 is kept in contact with the underground facility D.

FIG. 5 is an exploded perspective view showing a structure in which a horizontal rod and a vertical rod are rotatably connected by an adapter configured in the current grounding apparatus according to the present invention, and FIGS. 6 and 7 are sectional views showing the operational state of the horizontal rod shown in FIG. And FIG. 8 is a perspective view showing a state of a fixed foot constructed in a transverse bar according to the present invention.

The current grounding apparatus of the present embodiment is configured such that the second pipe 121 is composed of a fixed pipe 121a rotatably connected to the adapter 130 and a rolling pipe 121c connected to the fixed pipe 121a so as to be rolled. More specifically, in the second pipe 121a, the fixing pipe 121a and the rolling pipe 121c are connected in a line, and the rolling pipe 121c is rolled based on the fixing pipe 121a. That is, when the worker holds the rolling pipe 121c, the rolling pipe 121c maintains the posture in the ground G, and the fixing pipe 121a rolls on the axis of abscissa while the adapter 130 and the end bar 110 ) Are all rotated.

To this end, connection ends 121d and 121e are formed at the connection ends of the fixing pipe 121a and the rolling pipe 121c, respectively, so that the fixing pipe 121a and the rolling pipe 121c can be rolled while communicating with each other.

The adapter 130 includes a first guide hole 131a through which the first tube 111 can be movably inserted and a second guide hole 131b through which the fixing tube 121a is inserted and which is rotatably connected via the shaft 132. [ And a second guide hole 131c having a bottom open.

The adapter 130 is vertically moved up and down along a first tube 111 which is movably passed through the first guide hole 131a and the fixing tube 121a of the second tube 121 is rotatably connected. The third body 131 of the adapter 130 forms the first shaft hole 131b and the fixing pipe 121a is connected to the first pipe 131a of the first pipe 121. In order to connect between the fixing pipe 121a of the second pipe 121 and the adapter 130, A second shaft hole 121b corresponding to the shaft hole 131b is formed and the shaft 132 passes through the first shaft hole 131b and the second shaft hole 121b. As a result, the fixing tube 121a is rotatably connected to the third body 131 about the axis 132.

As described above, the fixing pipe 121a of the second pipe 121 may be disposed side by side or vertically with respect to the bottom bar 110 as shown in FIGS. 1 (a) and 1 (b) The transverse bar 120 rotates about the adapter 130. To this end, the fixing tube 121a of the second tube 121 must be able to rotate without interfering with the third body 131 of the adapter 130. To this end, the third body 131 has a side 2 guide holes 131c.

At this time, the upper surface of the third body 131 is closed by the fence 133 which covers the horizontal transverse bar 120, so that the transverse bar 120 is restricted from rotating upward. 2, when the transverse bar 120 is supported horizontally by the fence 133 and horizontally disposed on the ground G, the end bar 110 maintains its upright position while its wrapper 140 is positioned under the underground facility D, So that the contact state can be maintained.

The first pipe 111 is formed in a line shape along the longitudinal direction so that the adapter 130 does not interfere with the electric wire 122a drawn out from the hollow of the fixing pipe 121a when the adapter 130 moves along the first pipe 111. [ 3 guide holes 111a.

6 and 7, since the transverse bar 120 is rotatably connected to the longitudinal bar 110 with respect to the adapter 130, the electric wire 122a drawn out through the hollow of the transverse bar 120 is guided by the transverse bar 120 To the end bar 110 along the rotation of the end bar 110. Moreover, since the adapter 130 is lifted and lowered along the longitudinal direction of the longitudinal bar 110, the point of the longitudinal bar 110 at which the electric wire 122a is to be pulled can not be significantly changed. A third guide hole 111a through which the electric wire 122a passes is formed in the longitudinal bar 110 along the longitudinal direction so that the electric wire 122a drawn out from the transverse bar 120 is rotated by the transverse bar 120, Do not interfere with your poetry.

Subsequently, the transverse bar 120 is further configured with a foldable type fixed footrests 125a, 125b connected to move along the longitudinal direction of the second tube 121. [ The fixed footrests 125a and 125b are rotatably connected to each other along the longitudinal direction of the second pipe 121 via the tubular linking member 124 and the worker W rotates the fixed footrests 125a and 125b (F) to fix the transverse bar 120 at the corresponding position on the paper surface G. [ That is, when the worker W installs and arranges the current grounding apparatus for grounding to the underground facility D, the worker W himself can step on the fixed footsteps 125a and 125b with his / her feet F, . In addition, since the fixed footrests 125a and 125b of the present embodiment are configured to be foldable through a hinge, when the current grounding apparatus is normally stored, as shown in FIG. 1A, the end stop 110 and the transverse end 120 are arranged side by side And the fixed footrests 125a and 125b can also be folded to minimize the size thereof.

In order to install a current grounding device, a worker W first spreads the transverse bar 120 and places it on the ground G, unfolds the fixed footrests 125a and 125b, The transverse bar 120 is moved horizontally with respect to the fixed footrests 125a and 125b in the access road H so that the longitudinal bar 110 is placed at the optimum position. In this state, the height of the transverse bar 120 is adjusted on the basis of the adapter 130 so that the rapper 140 comes close to the underground facilities D, and if necessary, the fixing pipe 121a is rolled on the basis of the rolling pipe 121C So that the upright inclination of the long bar 110 can be adjusted. The worker W operates the handle 150 to bring the wrapper 140 into contact with and connect to the underground facility D and the handle 150 is moved in the direction of the handle 150, So that the trigger 152 maintains its posture. If the operator W holds the footrests 125a and 125b with his / her foot F even when his / her hand is released from the handle 150, the current grounding apparatus maintains the current posture and the current is supplied to the underground facility D In this state, the worker W can detect the induction electromagnetic field of the underground facility D and trace the position of the underground facility D.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

110; Bottom 111; A first tube 111a; Third guide hole
112; Linker 120; A transverse bar 121; The second pipe
121a; A fixing pipe 121b; A second shaft hole 121c; Rolling pipe
122; A connector 122a; A wire 122b; The first switch
122c; Switchboard 124; Connectors 125a, 125b; Fixed scaffold
130; An adapter 131; The third body
131a; A first guide hole 131b; The first shaft hole
132; Axis 133; Fence 140; The wrapper
141; A first body 142; Part 1 143; Part 2
150; A handle 151; A second body 152; trigger

Claims (3)

A longitudinal bar that is erectably insertable into an underground access road; A transverse bar rotatably connected to the saddle bar via an adapter, the saddle horizontally resting on the ground; A conductive wrapper secured to the lower end of the barrel, the conductive wrapper for holding and contacting the underground facility and electrically connected to the wire; And a handle fixed to an upper end of the longitudinal rod and configured to be triggered to be interlocked to open the wrapper, the current grounding device for guiding a transmitter current to an underground facility in electromagnetic induction survey,
The longitudinal rod comprising a first tube and a linker movably inlaid along the hollow of the first tube;
Wherein the transverse bar comprises a second tube, and a connector installed in the second tube, the current being applied to the wire wired along the hollow of the first tube and the second tube;
The wrapper includes: a first body fixed to a lower end of the first tube; a first piece formed to extend from the first body; And a second part rotatably connected to the linker and connected to the linker;
Wherein the handle comprises a second body fixed to an upper end of the first tube and a trigger connected to the linker is rotatably connected to the second body;
A current grounding device for guiding a transmitter current to an underground facility during electromagnetic induction survey. delete The method according to claim 1,
The connector further comprises: a first switch for switching the energization of the electric wire; and an electric distribution board for distributing the electric current applied to the electric wire to the electric wire;
Wherein the wrapper further comprises a lamp and a second switch that switches the energization of the lamp by the currents distributed in the switchboard and is mounted on the handle;
The second tube comprises a fixed tube rotatably connected to the adapter and a rolling tube connected to the fixed tube for rolling;
The transverse bar further comprises a foldable type fixed footrest connected to move along the longitudinal direction of the second tube;
The adapter includes a first guide hole through which the first tube movably passes, a second guide hole having a side surface and a bottom surface opened so that the fixing tube is inserted and rotatably connected via the shaft, And a third body closed by a fence covering the transverse bar of the state;
The first tube having a third guide hole formed in a line shape along the longitudinal direction so as not to interfere with the electric wire drawn out from the hollow of the fixing tube when the adapter moves along the first tube;
A current grounding device for guiding a transmitter current to an underground facility during electromagnetic induction survey.

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