KR101406777B1 - System for confirming position of underground construction - Google Patents

Abstract

The present invention can improve the measurement accuracy by allowing measurement equipment to face a gravity direction and adjusting the vertical height when a three dimensional position of an underground structure is measured by use of the measurement equipment of an electronic induction type. It is possible to accurately estimate that the underground structure is positioned in any direction by a reactivity difference between a pair of upper and lower reception antennas, received from three planes, even though the position is not right above the underground structure. Therefore, the time required for exploring for the plane position of the underground structure can be reduced, and the reception unit is always guided to be aligned vertical with the gravity direction, thereby carrying out the correct measurement and adjusting the height to reduce the measurement error.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a location management system,

More particularly, the present invention relates to a position change detection and management system for an underground facility, and more particularly, to an apparatus and method for measuring the position of an underground facility using an electromagnetic induction type measurement apparatus, The present invention relates to an improved underground facility location change confirmation management system capable of improving the accuracy of measurement by making it possible to adjust the position of the underground facility.

Recently, as the city has become more advanced and functional, the underground has become more utilized than ever.

However, underground facilities such as water and sewage, electric power, communication, and gas buried so far have been inaccurate in location and depth, and have become obstacles to effective management due to diversified and controlled management subjects.

Therefore, underground exploration and surveying equipment is required to precisely measure the underground facilities at national level in order to prevent and effectively manage safety accidents caused by underground facilities, and further to construct a geographic information system (GIS) It is a technology field that aims to realize a safe, secure and safe society.

In general, surveying measures the location of certain points on the surface, underground, underwater, and space, displays the results in figures and figures, calculates distance and height, area, volume and displacement, . Surveys include mapping, coastal surveying, and surveying. In other words, surveying is a study to analyze the mutual positional relationship between the earth and the problems existing in the universe, and natural phenomena such as earth surface, underground, underwater, ocean, space and space, .

Furthermore, surveying numerically identifies length, angle, time, direction, etc., and determines the horizontal position and the vertical position by the analysis of distance and angle considering plane and curved surface and space, Quantitative analysis that expresses in three dimensions is done. And interpretation and processing of terrain information about environment and resources.

In this way, the survey will lead to processes such as object survey, observation, interpretation, planning and design, and evaluation and maintenance.

Due to continuous improvement of economic, social, cultural and industrial level, various underground facilities buried in numerous institutions such as national, local government, electric company, water resources corporation, gas corporation, telecommunication company, district heating corporation, Underground space is located in a subterranean space (mostly within 3m below ground level) like a spider web.

However, as a result of failing to grasp the precise location of underground facilities, the degree of damage caused by various incidents during construction has increased significantly compared with the past. Underground facilities are not only social infrastructures but also information infrastructure societies. Therefore, various accidents and disasters related to underground facilities have more serious effects than economic damages of the people as well as physical and physical damages directly.

Therefore, the underground facilities are closely related with the safety of the city, and the systematic and scientific underground facilities need to be managed for the safe and pleasant city (u-CITY). However, in reality, the performance of the research and development investment is limited compared to that of the developed countries, as compared with the government's active support and research and development investment for the confirmation of the location of underground facilities such as Ministry of Construction and Transportation and Ministry of Information and Communication and GIS. One of these causes is that it is not constructed as it has been thoroughly organized from the burial stage to the confirmation of the underground facilities, and the limitations and limitations of the present technology of the underground exploration and surveying to confirm the buried underground facilities .

In order to realize Urban Information System (UIS) and Intelligent Terrestrial Information System, it is very necessary to locate by 3D exploration and surveying technology of high-resolution, long-depth underground facilities.

Conventional exploration and surveying techniques for exploration and surveying of underground facilities include 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.

At this time, when the receiver is moved horizontally with respect to the conductor through which the current flows, the magnetic line of force proceeds along the direction of the coil, so that a maximum signal (Peak Signal) is generated on the conductor. So that the magnetic line becomes smaller and the signal is reduced. That is, the point where the current is the highest is used when it is the right angle at the nearest place of buried conductor and it is an accurate arrangement.

And, the least law is used to measure the approximate location of the underground facility (the highest point of the magnetic field strength) by looking at the receiver near the "0" value. 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.

For example, as shown in Fig. 1, when a current (I) flowing through a conductor is measured using a receiver provided with an upper horizontal antenna (t) and a lower horizontal antenna (b) The reactivity of the horizontal antenna (t) and the reactivity of the lower horizontal antenna (b) are expressed by the following equations (1) and (2), respectively.

Equation 1

Equation 2

In the equations (1) and (2), Et denotes the degree of reactivity in the upper horizontal antenna, Eb denotes the reactivity in the lower horizontal antenna, I denotes the intensity of the current flowing in the conductor, Represents the distance between the horizontal antennas, and d represents the depth from the lower horizontal antenna to the conductor.

And the reactivity (Eb) in the lower horizontal antenna (b) is subtracted from the reactivity (Eb) in the upper horizontal antenna (t), the following equation (3) is obtained.

Equation 3

Equation (1) can be expressed by the following Equation (4) by summarizing Equation (1) with respect to the current (I) flowing in the conductor.

Equation 4

Accordingly, the depth d from the lower horizontal antenna b to the conductor (underground facility) can be expressed by the following equation (5).

Equation 5

In the electromagnetic disturbance area, the depth of burial is obtained by using trigonometry.

As described above, in the electromagnetic induction method, an AC magnetic field is generated around an underground facility, such as a pipe or a cable, and an AC magnetic field is generated around the AC magnetic field. The AC magnetic field generated from the ground surface is measured using the directional sensitivity of the measurement coil of the receiver. Lt; / RTI > for the potential gradient. The soil that passes the current changes locally, and the wet soil is a much better conductor than the dry sand.

In the conventional electromagnetic induction method as described above, it is possible to perform measurement only at the upper portion of the underground facility, and there is a limitation that the result of the survey is one-dimensional information that an underground facility exists at a few meters (depth) have.

In other words, in the case of exploring an underground facility where the exact location is not known, it is necessary to obtain precise information about the plane position of the underground facility by performing a precise survey on the entire suspected area. Based on this, It is possible to carry out the measurement for. Therefore, there is a problem that it takes a very long time to acquire accurate information about the planar position of underground facilities. In particular, it is impossible to exclude the possibility that the location of an underground facility may not be found if the user is misjudging the location of an underground facility and conducts a survey from a certain distance.

Korean Patent Laid-open Publication No. 10-2011-0058313 (2011.06.01.) "Three-dimensional electromagnetic induction surveying equipment for underground facility survey" has been disclosed as a prior art that partially improves these problems.

However, the above-mentioned prior art is disadvantageous in that since the receiver is rigidly fixed, the verticality can not be maintained accurately during the measurement operation, thereby causing a faulty measurement.

In addition, because the length is not controllable, the error of the surveyed value was severe due to the variation of the height according to the skill of the worker.

Korean Patent Publication No. 10-2011-0058313 (2011.06.01.) "Three-dimensional electromagnetic induction surveying equipment for underground facilities"

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems of the prior art, and it is an object of the present invention to provide an underground facility which can accurately locate an underground facility and drastically shorten a survey time, The main object of the present invention is to provide a location change confirmation management system for an underground facility which can induce the receiver to align vertically in the direction of gravity at all times, thereby enabling precise measurement and height adjustment and reducing measurement error.

According to an aspect of the present invention, there is provided a means for achieving the above object, comprising: a transmitter for transmitting an alternating current to an underground facility to be surveyed; and a controller for receiving an induced magnetic field generated in the underground facility by an alternating- The receiver includes a pair of upper receiving antennas and a lower receiving antenna that are configured in a shape selected from a triangular prism shape, a right triangular prism shape, a columnar shape, a cylindrical shape, and a sphere shape, Is installed by arranging one on each of three surfaces, which are equally divided into three as viewed from a plane; A handle disposed vertically to the ground and provided with the transmitter and the receiver, a handle disposed horizontally to the ground and connected to the upper end of the support rod, and a controller for processing signals received from the lower and upper receive antennas, A keypad unit for inputting a value to be set to the control unit, and a control unit for controlling the operation of the transmitter according to a control signal of the control unit, And a port unit having a serial port and a USB port for connecting the control unit and the external computer, the system comprising: An inner hollow fixing table fixed to a lower surface of the port portion; A drawer to be inserted into the fixing table; A lattice formed on one side of the drawer; A pinion gear which is rotatably fixed on a lower end side of the fixing table and which is engaged with the rack-like gear through the fixing table; A driven bevel gear integrally formed on one side of the pinion gear; A driven bevel gear engaged with the driven bevel gear; A take-out motor fixed on a rotary shaft of the drive bevel gear, electrically connected to the control unit through a motor lead wire, and fixed to one side of the fixed base; A gripping cup integrally fixed to a lower end of the drawing board and having a shape in which a lower end portion of a spherical shape is cut off; An electromagnet fixedly embedded in an inner circumferential surface of the gripping cup and electrically connected to the control unit through an electromagnet lead wire; And a receiving ball having an outer diameter corresponding to an inner diameter of the holding cup, ball-jointed to the holding cup, and a magnetic metal inserted therein, the receiving ball integrally formed on the upper end of the supporting rod constituting the receiving portion, A fixing rod is fixed to a lower end of a foldable coupling part fixed to a lower end of the fixing rod, and an assembling boss is fastened to a lower end of the fixing rod. A transmitter is fixed to the outer circumferential surface of the fixing boss by a plurality of connecting rods, A part of the outer circumferential surface of the upper part of the upper part of the rotary bobbin is fixed to the upper part of the upper part of the rotary bob, And a motor gear is meshed with the rotary gear exposed in the cutout groove, A plurality of drawing cylinders are fixed to the outer circumferential surface of the assembly boss, and the drawing cylinder is connected to the connecting rod so as to be able to be drawn out from the upper end of the connecting rod, Further comprising a guide rod having one end fixed to the outer circumferential surface of the assembly boss and the other end disposed parallel to the connection rod through the transmitter, wherein a stopper is provided at an end of the guide rod passing through the transmitter Provides a location change confirmation management system for underground facilities.

According to the present invention, it is possible to accurately estimate the direction in which the underground facilities are located even if they are not directly above the underground facilities, by utilizing the difference in reactivity between the upper receive antenna and the lower receive antenna of each pair received from three sides, It is possible to drastically reduce the time required for searching for the plane position of the target.

In addition, it is possible to induce the receiver to vertically align in the direction of gravity at all times, thereby enabling precise measurement and height adjustment, thereby reducing the measurement error.

Fig. 1 is a conceptual diagram for explaining a situation in which the depth of an electromagnetic induction probe is measured.
2 is a block diagram showing an embodiment of a location change confirmation management system for an underground facility according to the present invention.
3 is a perspective view conceptually illustrating a receiver in an embodiment of a location change confirmation management system according to the present invention.
4 is a perspective view showing an embodiment of a location change confirmation management system for an underground facility according to the present invention.
5 is a conceptual diagram illustrating a state of exploring an underground facility and a screen of a display unit using an embodiment of a location change confirmation management system according to the present invention.
FIG. 6 is an enlarged view showing a further modified embodiment of the location change confirmation management system according to the present invention.
7 is an exemplary diagram illustrating a further embodiment according to the present invention.

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

Before describing the present invention, the following specific structural or functional descriptions are merely illustrative for the purpose of describing an embodiment according to the concept of the present invention, and embodiments according to the concept of the present invention may be embodied in various forms, And should not be construed as limited to the embodiments described herein.

In addition, since the embodiments according to the concept of the present invention can make various changes and have various forms, specific embodiments are illustrated in the drawings and described in detail herein. However, it should be understood that the embodiments according to the concept of the present invention are not intended to limit the present invention to specific modes of operation, but include all modifications, equivalents and alternatives falling within the spirit and scope of the present invention.

The present invention uses the above-described prior-art patent publication No. 2011-0058313 as it is. Therefore, the features of the device configuration described below are all described in the Published Patent Application No. 2011-0058313.

However, the present invention is characterized in that the height adjusting and gravity direction aligning functions of the structures disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 2011-0058313 are improved.

Therefore, the device structure, characteristics and operation relationship described below will be cited as the contents of the above-mentioned Patent Publication No. 2011-0058313, and the configuration related to the main features of the present invention will be described in detail at the rear end.

2 and 3, the location change confirmation management system of the underground facility according to the present invention includes a transmitter 10 for transmitting an AC current to an underground facility to be surveyed, And a receiver 20 for receiving an induced magnetic field generated in an underground facility and exploring a buried position and a depth.

The transmitter 10 can be configured to be able to select and perform an indirect probe method (direct method), a direct connection method, or the like depending on the material of the underground facility.

In the indirect method, the transmitter 10 is configured as guidance antennas so as to propagate an AC current at a predetermined frequency (for example, 50 Hz, 60 Hz, 1 KHz, 8 KHz, 33 KHz, 128 KHz, and the like).

In the direct connection method, a terminal connected to the transmitter 10 is grounded on the ground so that an AC current of a predetermined frequency (for example, 50 Hz, 60 Hz, 1 KHz, 8 KHz, 33 KHz, 128 KHz, etc.) is propagated.

Since the configuration of the transmitter 10 can be implemented by applying the configuration of a transmitter used in the conventional electromagnetic induction method, a detailed description will be omitted.

As shown in FIG. 3, the receiver 20 includes a pair of upper receiving antennas 22 and a lower receiving antenna 24, which are disposed in parallel at predetermined intervals, Respectively.

The upper receiving antenna 22 and the lower receiving antenna 24 are disposed in parallel to each other and are disposed horizontally with respect to the ground.

For example, the receiver 20 may be formed in a triangular prism shape or a regular triangular shape, or may be a cylindrical shape or a cylindrical shape.

As shown in FIG. 4, the three-dimensional electromagnetic induction measuring instrument for measuring underground facilities according to the present invention includes a support bar 30 vertically positioned on the ground, a handle 40 positioned horizontally on the ground, .

As shown in FIG. 4, the receiver 20 includes a lower receiving block 23 constituted by disposing a lower receiving antenna 24 on three surfaces divided into three halves as seen from a plane, and a lower receiving block 23 And an upper receiving block 21 constituted by disposing the upper receiving antenna 22 on each of the three surfaces divided into three equal parts.

The lower reception block 23 and the upper reception block 21 are fixedly installed at a predetermined interval (for example, 400 mm, 800 mm, 1 m) set on the support bar 30.

A lower reception block 23 is installed at the lower end of the support bar 30 and an upper reception block 21 is installed at a predetermined interval from the lower reception block 23.

The lower receiving block 23 and the upper receiving block 21 are disposed in such a manner that the lower receiving antenna 24 and the upper receiving antenna 22 are disposed on the same plane.

The lower receiving block 23 and the upper receiving block 21 may be formed into a spherical shape, a cylindrical shape, a cylindrical shape, a triangular columnar shape, a triangular cylindrical shape, a hexagonal columnar shape, a hexagonal cylindrical shape, or the like It is possible.

As shown in Fig. 4, the support rod 30 is provided with a transmitter 10, which is composed of a pair of inductive antennas positioned 180 degrees from each other, above the lower reception block 23. [

It is also possible to apply a folding joint part 34 at an intermediate portion of the support bar 30 so that the support bar 30 can be folded as needed. Here, the foldable engaging portion 34 can be generally applied by a method widely used in mechanical structures (for example, a folding method using a hinge or a folding method using a hinge or the like) A detailed description thereof will be omitted.

The handle 40 is connected to the upper end of the support rod 30 at all times.

As shown in FIGS. 2 and 4, the three-dimensional electromagnetic induction measuring instrument for measuring underground facilities according to the present invention includes a signal receiving unit for receiving signals received from the lower receiving antenna 24 and the upper receiving antenna 22, A display unit 58 for displaying input conditions and processed results connected to the control unit 50 and a display unit 58 for displaying a predetermined set input value and an alternating current It is also possible to provide a keypad unit 56 for inputting the frequency of the mobile phone.

The control unit 50, the display unit 58, and the keypad unit 56 are installed and configured to be supported by the support bar 30 and the handle 40.

The knob 40 may be provided with a speaker unit 59 connected to the control unit 50 and generating a signal indicating whether the transmitter 10 is operating.

A port unit 57 including a serial port and a USB port is connected to the controller 50 so as to be connected to an external computer.

The handle 40 may further include a battery unit 60 for supplying power to the controller 50 or the like.

With this configuration, it is very convenient to carry out the search of the underground facility while easily moving while holding the handle 40. [

FIG. 5 shows a process of exploring an underground facility 2 using the 3D electron induced measurement equipment for underground facility survey according to the present invention.

For example, in a case where the receiver 20 is located at the position directly above the underground facility 2 (in the case of the ㉯ position), it is indicated as being located at the center in the display unit 58, and when it is positioned biased to the left or right (In the case of the ㉮ or ㉰ position), it is indicated as being positioned at the center in the display unit 58.

3, each of the upper receiving antenna 22 and the lower receiving antenna 24 is positioned on three equally divided sides of the receiver 20, The signals obtained from the upper receiving antenna 22 and the lower receiving antenna 24 on the respective surfaces are different.

That is, the signal of one side is relatively larger than the signal of the other two sides, and it is interpreted that the underground facility 2 is located in a direction parallel to the direction showing a relatively large value.

It is possible to easily find the direct room position of the underground facility 2 by analyzing the size of the signal while ascertaining the direction parallel to the longitudinal direction of the underground facility 2 and moving it perpendicular to this direction. That is, since the size of the signal becomes relatively larger as it gets closer to the underground facility 2, it is possible to easily check the position of the underground facility 2 when moving in the direction of increasing the signal.

The control unit 50 analyzes the signals inputted from the three lower surface receiving antennas 24 and the upper surface receiving antennas 22 and determines the position of the underground facilities 2 in any direction As shown in Fig. 5, it can be displayed through the display unit 58. [0053] Fig.

According to the embodiment of the three-dimensional electromagnetic induction measuring instrument for measuring underground facilities according to the present invention, the signals of the lower receiving antenna 24 and the upper receiving antenna 22 obtained from three planes are analyzed, It is possible to easily find the arrangement direction and the position of the underground facilities 2. Therefore, it is possible to drastically reduce the time required for exploration.

A further embodiment according to the present invention includes the height adjusting means and the collimator direction alignment means between the port portion 57 and the upper receiving block 21 of the receiving portion 20, The receiving unit 20 can be automatically aligned in the normal gravity direction and set to the correct position, thereby reducing the measurement error and increasing the accuracy of the surveying work.

That is, the height adjusting means according to the present invention includes a fixing table 500, a drawing board 510, a drawing motor 520 and a driving bevel gear 530, a driven bevel gear 540, a pinion gear 550, (560).

At this time, the fixing table 500 is fixed to the lower surface of the port portion 57, and the hollow portion is hollow.

In this case, the fixing table 500 may be cylindrical, but is preferably formed in a rectangular shape in consideration of smoothness and accuracy of operation.

The drawer (510) is inserted into the fixing table (500).

At this time, a raising gear 560 is formed in a longitudinal direction on one side of the drawing board 510, and a pinion gear 550 is coupled to the raising gear 560.

The pinion gear 550 is in the form of a double gear having a single driven bevel gear 540 on one side thereof and its rotation axis is fixed to a lower end portion of the fixing table 500.

A hole (not shown) is formed in a lower end portion of the fixing table 500 so that the pinion gear 550 can be installed. A part of the tooth surface of the pinion gear 550 is fixed to the fixing table 500 And engages with the ladle-like fish 560.

A draw motor 520 is fixed to a part of the outer circumferential surface of the fixing table 500 and a driving bevel gear 530 is fixed to a rotary shaft of the draw motor 520.

The driven bevel gear 530 is engaged with the driven bevel gear 540 integrally formed with the pinion gear 550.

The turning force of the drawing motor 520 is transmitted through the driving bevel gear 530 and the driven bevel gear 540 in a direction perpendicular to the rotation axis of the drawing motor 520 and the transmitted turning force is transmitted to the pinion gear 550 to the ladder language 560.

The drawing motor 520 is electrically connected to the control unit 50 through the motor lead L1 and the rotational direction and the rotational speed are controlled according to the control signal of the control unit 50. [

Accordingly, the height of the drawer 510 can be adjusted accurately by the draw motor 510 being driven by the drawer 500.

Meanwhile, the gravity direction aligning means includes a grip cup 600, an electromagnet 610 and a receiving ball 620.

At this time, the gripping cup 600 is formed at the lower end of the drawer 510 and has a shape in which a part of the lower end of the spherical shape is cut.

This is for the purpose of ball joint coupling, in which the receiving ball 620 is inserted into the gripping cup 600 and ball-jointed so as to move freely by 360 °.

The receiving ball 620 is integrally formed at the upper end of the support rod 30, that is, the upper end of the support rod 30 constituting the upper end of the upper reception block 21 constituting the receiver 20.

The receiving ball 620 may have a spherical shape having an outer diameter corresponding to the inner diameter of the gripping cup 600 and may be formed of a metal so as to have an attraction force by the magnet, Given that the magnetic metal may be inserted into the interior, especially near the surface.

In addition, an electromagnet 610 is embedded in the inner circumferential surface of the gripping cup 600.

The electromagnet 610 is connected to the control unit 50 through the electromagnet lead wire L2 to receive power and is a conventional electromagnet which generates magnetic force when power is supplied and eliminates magnetic force when the power is turned off .

At this time, since the electromagnet lead wire L2 is extended and drawn out through the inside of the drawer 510, there is no risk of disconnection because it does not hurt the appearance quality.

Similarly, it is preferable that the above-described motor lead L1 is wired in the same manner.

Thus, if power is not applied while the receiving ball 620 is ball jointed to the holding cup 600, the receiving ball 620 is always automatically aligned in the gravity direction by its own weight.

Therefore, the verticality is always maintained accurately, and if the underground facility is inclined, the direction of vertical drag to the underground facility can be accurately calculated by arithmetically calculating the inclination angle according to the trigonometric function method.

When the receiving ball 620 is aligned, when the power is applied through the control unit 50, the electromagnet 610 generates an attraction force by magnetic force, and the receiving ball 620 is attracted to the holding cup 600 ).

Therefore, the verticality with respect to the direction of gravity is distorted or erroneously calculated, and measurement errors are not generated.

As such, the additional embodiment according to the present invention guides the receiver 20 to be aligned in the direction of gravity at all times while adjusting the length of the port portion 57, more precisely the height of the port portion 57, It is possible to obtain an advantage of minimization.

In addition, the configuration of the additional embodiment as shown in FIG. 7 can be further provided so that the position of the transmitter 10 can be rotated and varied.

7, a fixing rod R is connected and fixed to the lower end of the foldable coupling portion 34. An assembly boss B is connected to a lower end of the fixing rod R, The transmitter 10 is fixed via the connecting rod C symmetrically in the radial direction.

Therefore, in a further embodiment of the present invention, the position of the transmitter 10 can be changed by moving the transmitter 10 forward and backward, and the assembly boss B can be rotated to rotate the position of the transmitter 10 freely in the radial direction Respectively.

To this end, a part of the upper outer peripheral surface of the assembly boss B is cut so as to form the incision groove 700, and the rotary gear 720 is exposed to the incision groove 700.

The rotary gear 720 is integrally fixed to the lower end of the fixed rod R and is fixed to the fixed rod R so that the assembly boss B can rotate smoothly about the fixed rod R. [ The bearing 710 is fixed to the end of the rotary shaft 720 at a position where the bearing 710 is not interfered with the rotary gear 720.

The motor gear 730 is fixed on the rotary shaft of the rotary motor 740 so that the motor gear 730 is engaged with the rotary gear 720 exposed through the incision groove 700, The rotary motor 740 is firmly fixed on the outer circumferential surface of the assembly boss (B).

Accordingly, when the rotary motor 740 is driven, the motor gear 730 rotates in the radial direction on the rotary gear 720 because the fixed rod R is kept stationary without moving The motor gear 730 is also fixed to the rotary motor 740 so that the rotary motor 740 is also rotated together with the assembly boss B to which the rotary motor 740 is fixed The transmitter 10 can be rotated.

4, the connecting rod C is separated from the assembly boss B, the drawing cylinder 750 is fixed on the assembly boss B, and the connecting rod C The connecting rod C for fixing the transmitter 10 can be drawn out and inserted, and as a result, the position of the transmitter 10 can be changed.

In this case, since the transmitter 10 is fixed only to the connection rod C, the connection rod C can be deployed for a long time.

In order to prevent this, a further embodiment of the present invention further includes a guide rod 760 which is parallel to the connection rod C on the outer circumferential surface of the assembly boss B and fixes the connection rod C on the upper side thereof.

At this time, the end of the guide rod 760 is arranged through a part of the transmitter 10, and a stopper 770 is provided at the end of the guide rod 760 to prevent the guide rod 760 from coming off.

Of course, since the connecting rod C operates within the range of stroke of the drawing cylinder 750, there is no fear of disengagement, but a problem of unintentional deviation due to malfunction may occur. To prevent this, the stopper 770, .

In this case, the stopper 770 is fastened to the stopper 770 in such a manner that a fastening protrusion 772 protruding from one side of the stopper 770 is screwed on the fastening groove 762 formed at the end of the guide rod 760 Can be configured.

With this configuration, the position of the transmitter 10 can be freely varied by the rotation operation of the rotation motor 740 and the forward and backward movement of the drawing cylinder 750, thereby further increasing the efficiency and accuracy of the measurement operation , It is possible to maximize convenience in use.

500: fixed base 510: drawer
520: draw motor 530: drive bevel gear
540: driven bevel gear 550: pinion gear
560: Rae size 600: Phage cup
610; Electromagnet 620: receiving ball
700: incision groove 710: bearing
720: rotary gear 730: motor gear
740): rotation motor 750: drawing cylinder
760: guide rod 770: stopper

Claims (1)

And a receiver for receiving an induced magnetic field generated in an underground facility by an alternating current transmitted from the transmitter to probe a buried position and a depth of the underground facility to be explored, A pair of upper receiving antennas and a lower receiving antenna, which are arranged in parallel at predetermined intervals, are divided into three parts, that is, 360 degrees divided into 3 parts, One on each side; A handle disposed vertically to the ground and provided with the transmitter and the receiver, a handle disposed horizontally to the ground and connected to the upper end of the support rod, and a controller for processing signals received from the lower and upper receive antennas, A keypad unit for inputting a value to be set to the control unit, and a control unit for controlling the operation of the transmitter according to a control signal of the control unit, And a port unit having a serial port and a USB port for connecting the control unit and the external computer, the system comprising:
An inner hollow fixing table fixed to a lower surface of the port portion;
A drawer to be inserted into the hollow of the fixing table;
A lattice formed on one side of the drawer;
A pinion gear which is rotatably fixed on a lower end side of the fixing table and which is engaged with the rack-like gear through the fixing table;
A driven bevel gear integrally formed on the same rotating shaft on one side of the pinion gear;
A driven bevel gear engaged with the driven bevel gear;
A take-out motor fixed on a rotary shaft of the drive bevel gear, electrically connected to the control unit through a motor lead wire, and fixed to one side of the fixed base;
A gripping cup integrally fixed to a lower end of the drawing board and having a shape in which a lower end portion of a spherical shape is cut off;
An electromagnet fixedly embedded in an inner circumferential surface of the gripping cup and electrically connected to the control unit through an electromagnet lead wire;
And a receiving ball having an outer diameter corresponding to an inner diameter of the gripping cup, ball-jointed to the gripping cup, and a magnetic metal inserted therein, the receiving ball integrally formed on the upper end of the support rod constituting the receiver,
The fixing rod is fixed to the lower end surface of the foldable coupling part fixed to the lower end of the support rod, the assembly boss is fastened to the lower end of the fixing rod, and the transmitter is fixed to the outer circumferential surface of the assembly boss by a plurality of connection rods. A rotary gear is further fixed to the lower end of the rod and a bearing is provided on the outer circumferential surface of the upper fixed rod of the rotary gear so as to be rotatably fixed to the upper end of the assembly boss, And the motor gear is connected to a rotation motor fixed to the outer circumferential surface of the assembly boss, and the motor gear is connected to the outer circumferential surface of the assembly boss, A plurality of drawing cylinders are fixed, and the drawing cylinder is configured to be capable of drawing out by coupling the connecting rod And a guide rod having one end fixed to the outer circumferential surface of the assembly boss and the other end disposed parallel to the connection rod through the transmitter, And,
Wherein the stopper has a fastening protrusion (772) protruding from one side of the stopper on a fastening groove (762) formed on an end portion of the guide rod.

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