JP6678243B2 - Reinforcement break detector for utility pole - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a reinforcing-beam-break detecting device for electric poles, and more particularly to a reinforcing-beam-break detecting device for electric poles capable of detecting a reinforcing-bar break from a structure in which a reinforcing bar is buried inside a concrete electric pole or the like.

  Generally, most of the supports used in distribution lines are concrete utility poles, and have a prestressed (PS) concrete structure. P. When the S-concrete power pole is used for a long period of time, an accident occurs in which the concrete collapses due to a break in the reinforcing bar inside the power pole.

  P. The S-concrete structure is designed to support the bending moment by the tensile force of the reinforcing steel. Therefore, if the reinforcing steel inside the electric pole breaks and loses the tensile force, an accident occurs in which the concrete electric pole collapses.

  Recently, when a worker cuts a cable connected to a power pole in order to replace a concrete power pole, there has been a case where a power pole suddenly collapsed due to an imbalance in power and a safety accident occurred.

  P. In the case of South Korea, which uses S-concrete power poles, there is a very high risk of accidents due to breakage of the reinforcing bars inside the concrete because various equipment such as transformers and switches are installed on the power poles. Therefore, it is necessary to diagnose that the reinforcing bar inside the concrete is broken and replace or reinforce the electric pole before the collapse accident occurs.

  A related prior art patent is disclosed in Korean Patent Publication No. 10-2014-0042240 (published on April 7, 2014).

  However, the prior patent discloses a method of diagnosing a reinforcing bar breakage in a concrete utility pole using a sensor that is one of smartphone functions. However, there is a problem that it is difficult to diagnose a reinforcing bar rupture.

  That is, as shown in FIG. 1a, when a reinforcing bar break P occurs at the upper part of the ground surface 2 of the concrete electric pole 1, a sensor can be brought into contact with the concrete electric pole 1 to detect the presence or absence of the reinforcing bar break, as shown in FIG. 1b. As described above, when the reinforcing bar fracture P occurs at the lower portion of the ground surface 2 of the concrete electric pole 1, it is impossible to contact the sensor and detect the reinforcing bar fracture.

  Also, the prior patent not only requires that sensors be sequentially arranged along the circumference on the outer surface of the utility pole to inspect multiple rebars, but also moves up and down to inspect rebars in the longitudinal direction. Since it is necessary to inspect the state of rebar breakage while working, there is a problem that workability is significantly reduced while working time is increased.

Korean Patent No. 10-2014-0042240

  Accordingly, an object of the present invention is to provide a plurality of structures by detecting magnetic fields generated from a plurality of reinforcing bars by closely contacting the outer surface of a power pole from a structure having a reinforcing bar embedded therein, such as a concrete power pole. An object of the present invention is to provide a power pole reinforcing bar breakage detection device capable of simultaneously detecting a reinforcing bar breakage state.

  Another object of the present invention is to provide a steel pole breakage detecting device for a utility pole, which can easily perform a steel bar breakage state detection operation for various utility poles having different diameters without replacing a detection unit.

According to the features of the present invention for achieving the above object, the present invention provides a method for manufacturing a battery according to the present invention, which is in close contact with a circumferential outer surface of a utility pole, and at a position corresponding to a plurality of reinforcing bars embedded in the utility pole, A detection unit that detects a magnetic field generated from the rebar, a data logger unit that stores the applied magnetic field data to the rebar detected by the detection unit, and a change amount of the magnetic field of the magnetic field data stored in the data logger unit. And a broken state detecting section for detecting a broken state of the reinforcing bar based on the broken state.

The detection unit is configured to be rotatably coupled to one side of the gripping portion, which provides a gripping region to an operator, and to one side of the gripping portion, and one side surface is formed on a circumferential outer surface of the telephone pole. The detection body may include a detection body that is in close contact with the main body, and a plurality of magnetic field detection units that are installed at regular intervals along the length direction of the detection body.

  The detection main body may be formed such that a plurality of rotation blocks are rotatably connected to each other via a fixing member so as to be curved.

  The fixing member may be formed by a bolt and nut method, and may fix a connection state between the adjacent rotation blocks.

The magnetic field detector may be provided on the rotating block.

The detection unit includes: a grip portion that provides a grip area to an operator; a stabilizer bar fixed to one side extending from the grip portion and extending so that the other side curves in a direction away from the grip portion. One side is rotatably connected to one side extending from the grip portion, the other side is connected to the stabilizer bar via elastic means, and one side is closely attached to the circumferential outer surface of the telephone pole by elastic deformation. It may include a detection main body, and a plurality of magnetic field detection units installed at regular intervals along the length direction of the detection main body.

  The detection main body may include a plurality of chain blocks that are rotatably coupled to each other via a rotation member, and an elastic band that is connected between the chain blocks.

The magnetic field detector may be provided on the chain block.

According to the present invention, a magnetic field generated from a reinforcing bar is detected at a position corresponding to a plurality of reinforcing bars embedded in the power pole in close contact with the outer surface of the power pole. Accordingly, since a plurality of rebar break states can be detected at the same time, workability can be greatly improved.

  Further, in the present invention, the detection main body is formed by connecting a plurality of rotating blocks, and the angle of each rotating block is fixed, and the detection body is in close contact with the outer peripheral surface of the utility pole. Therefore, there is an effect that the work of detecting the reinforcing-bar broken state for various power poles having different diameters can be easily performed without replacing the detection unit.

  Further, in the present invention, the detection main body is formed by connecting a plurality of chain blocks, and is brought into close contact with the outer peripheral surface of the utility pole by elastic deformation using an elastic means and an elastic band. Therefore, the diameter gradually increases from the upper part to the lower part, and there is an effect that the work of detecting the state of rebar rupture for utility poles having different outer diameters in the upper part and the lower part can be easily performed.

It is a figure which shows the example of a reinforcing-bar fracture | rupture with respect to the upper part of the ground surface of a concrete electric pole. It is a figure which shows the example of a reinforcing-bar fracture with respect to the lower part of the ground surface of a concrete electric pole. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the rebar fracture detection apparatus for electric poles which concerns on one Embodiment of this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the rebar fracture detection apparatus for electric poles which concerns on one Embodiment of this invention. It is a figure showing the method of making one embodiment of the present invention adhere along the outer surface of a telephone pole in the peripheral direction, and detecting a reinforcing-bar fracture. It is a graph which shows the magnetic field data with respect to several rebar which detected the magnetic field using the rebar fracture detection apparatus for electric poles which concerns on this invention. It is a figure which shows the rebar fracture detection apparatus for electric poles which concerns on other embodiment of this invention. It is a figure showing the method of making other embodiments of the present invention adhere to a peripheral direction outside of a telephone pole, and detecting a reinforcing-bar fracture.

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

[One embodiment]
As shown in FIGS. 2 and 3, the detection unit 10 includes the data logger unit 20 and the break state detection unit 30 in the power pole rebar break detection apparatus according to one embodiment of the present invention.

As shown in FIG. 4, the detection unit 10 closely contacts the outer surface of the electric pole 1 in the circumferential direction, and detects a magnetic field from the reinforcing bar 3 at a position corresponding to the plurality of reinforcing bars 3 embedded in the electric pole 1. .

  Inside the electric pole 1, a plurality of reinforcing bars 3 are buried at regular intervals in a circular shape. The length of the reinforcing bar 3 buried inside the power pole 1 is approximately 2.5 m from the ground surface to the bottom (in the case of a 16 m power pole).

In the case described above, when a magnetic field is detected for a plurality of rebars 3 buried in the electric pole 1 while moving vertically in close contact with the outer surface of the electric pole 1 in the circumferential direction, based on the amount of change in the magnetic field , Thus, a plurality of rebar 3 break state detection processes can be performed simultaneously.

According to the principle, it is possible to detect that the reinforcing bar 3 is broken at a portion where the amount of change in the magnetic field is sharp in the length direction of the reinforcing bar 3.

Further, when a magnetic field is detected on a plurality of rebars 3 buried in the utility pole 1 at a fixed height along the circumferential outer surface at a fixed height of the utility pole 1, the ground strength is determined based on the relative strength of the magnetic field. Even when the reinforcing bar 3 below the surface is broken, it can be detected.

The principle is that when magnetic field data for a plurality of rebars 3 is detected in the circumferential direction at a certain height above the ground surface of the electric pole 1, this is shown in a graph, and the strength of the magnetic field is compared to diagnose a broken rebar. be able to.

Even when the reinforcing bar below the ground surface breaks, the broken reinforcing bar can be detected because a difference in magnetic field strength occurs between the reinforcing bar and the unbroken reinforcing bar.

  Comparing the magnetic field strengths of the reinforcing bars 3 in the circumferential direction, the unbroken reinforcing bars show almost the same magnetic field strength. However, in the case of a reinforcing bar in which any one part is broken, the reinforcing bar whose magnetic field strength is not broken is shown. And a difference occurs.

  The detection unit 10 includes a grip part 11, a detection main body 13, and a magnetic field detection part 19.

  The grip part 11 is a part that provides a grip area to the worker so that the worker can move the detection main body 13 in the vertical direction of the utility pole 1. The grip portion 11 can be formed in a bar shape having a predetermined length so that an operator can easily grip the grip portion.

The detection main body 13 is rotatably connected to one side of the grip 11. The detection main body 13 provides an installation area for the magnetic field detection unit 19 and is in close contact with the outer surface of the power pole 1 so that the magnetic field detection unit 19 can detect the magnetic field of the reinforcing bar 3 embedded inside the power pole 1. To

  The detection main body 13 can be formed so as to be curved into a shape corresponding to the outer circumferential surface of the utility pole 1. The detection main body 13 is formed to be curved, so that one side surface can be in close contact with the outer peripheral surface of the utility pole 1 in the circumferential direction.

  The detection main body 13 can be formed such that a plurality of rotation blocks 15 are rotatably connected to each other via a fixing member 17 so as to be curved.

  The fixing member 17 connects the rotating blocks 15 to form the detection main body 13, fixes the angle of the rotating blocks 15 connected to each other, and is positioned at a position corresponding to the reinforcing bar 3 embedded in the utility pole 1. A magnetic field detection unit 19 described later is arranged.

  As shown in FIG. 3, at both ends of each rotating block 15, there are provided through holes 16 to which a fixing member 17 is coupled. The fixing member 17 can be formed by a general bolt 17a / nut 17b system.

  The fixing member 17 can be connected to the through holes 16 of the adjacent rotation blocks 15a and 15b to fix the connection state between the rotation blocks 15a and 15b.

  The magnetic field detector 19 can be composed of a plurality of magnetic field detectors arranged at regular intervals along the length direction of the detection main body 13.

Specifically, the magnetic field detection unit 19 is installed on one side of each of the plurality of turning blocks 15, and detects a magnetic field generated from the reinforcing bar 3 in a state where the plurality of turning blocks 15 are in close contact with the outer surface of the utility pole 1. I do. The magnetic field detection unit 19 can be embedded and installed on one side of each rotation block 15. In the present embodiment, the magnetic field detection unit 19 is embedded and installed at the center of each rotation block 15.

  The magnetic field detection unit 19 may be a magnetic sensor that measures a magnetic field that is a current generated from the reinforcing bar 3 by an electromagnetic induction phenomenon.

  As described above, the detection main body 13 can be formed so as to surround the outer surface of the utility pole 1 in a circumferential direction by connecting a plurality of rotation blocks 15. However, the detection main body 13 is preferably formed to have a length of about 1/2 of the circumference size of the telephone pole in consideration of noise generated between the adjacent magnetic field detection units 19 at the time of magnetic field detection. .

  The data logger unit 20 receives and stores magnetic field data for the reinforcing bar 3 detected by the detection unit 10. The data logger unit 20 is electrically connected to the detection unit 10 and substantially receives and stores magnetic field data applied to the reinforcing bar 3 detected by the magnetic field detection unit 19 of the detection unit 10.

  The rupture state detection unit 30 detects the rupture state of the rebar based on the amount of change in the magnetic field of the magnetic field data stored in the data logger unit 20. Specifically, the rupture state detection unit 30 is electrically connected to the data logger unit 20, can receive the transmission of the magnetic field data stored in the data logger unit 20, and can transmit the magnetic field data stored in the data logger unit 20. Of the rebar is detected based on the amount of change in the magnetic field.

  Hereinafter, the operation of the present invention will be described.

  First, a method for detecting a reinforcing bar break by bringing the detection body into close contact with the outer surface of the telephone pole in the circumferential direction will be described.

  For this reason, as shown in FIG. 4, in a state in which the operator holds the grip 11, one of the plurality of rotary blocks 15 is rotatably connected to one side of the rotary block 15. 1 on the outer surface.

  Next, one side surface of the plurality of rotating blocks 15 is brought into close contact with the outer surface of the utility pole 1 by rotating the remaining plurality of rotating blocks 15 in a direction in which the remaining rotating blocks 15 come into close contact with the outer surface of the utility pole 1.

  Next, the fixing members 17 connecting the respective rotating blocks 15, that is, the bolts and nuts are tightened to fix the state where the rotating blocks 15 are rotated.

  Thereby, the state in which the detection main body 13 including the plurality of rotation blocks 15 is in close contact with the outer surface of the utility pole 1 can be maintained, and the magnetic field detection units 19 installed on the respective rotation blocks 15 can use the reinforcing bars 3 at the corresponding positions. A magnetic field can be detected.

Thereafter, as the gripper 11 is moved upward, the plurality of rotating blocks 15 are moved upward, and the magnetic field detector 19 detects the magnetic field of the reinforcing bar 3 in the length direction.

  In other words, when the gripper 11 moves upward, the plurality of rotating blocks 15 connected to the gripper 11 move upward in contact with the outer surface of the utility pole 1, so that the magnetic field generated from each rebar 3 is transmitted to the rebar 3. Can be detected along the length direction.

  The magnetic field data for the rebar 3 detected by the magnetic field detection unit 19 is stored in the data logger unit 20.

  Further, the rupture state detection unit 30 detects a magnetic field change for each reinforcing bar 3 based on the magnetic field data stored in the data logger unit 20 and detects a rupture state of the reinforcing bar based on the amount of change in the magnetic field.

  For example, when the longitudinal magnetic field data for any one of the plurality of rebars is shown, it is possible to detect that the rebar is in a broken state at a portion where the amount of change in the magnetic field is sharp.

Also, when comparing magnetic field data for a plurality of rebars detected in the circumferential direction at a certain height above the ground surface of the telephone pole, if there is a difference in the magnetic field strength, the gripper 11 does not need to be gripped upward and moved. However, it is possible to diagnose a reinforcing bar in a broken state.

As described above, according to the present invention, the detection main body 13 comes into close contact along the outer surface of the utility pole 1 and detects the magnetic field from the rebar 3 at a position corresponding to the plurality of rebars 3, whereby the plurality of rebar fracture states are detected. Can be detected simultaneously.

  Further, since the detection main body 13 is fixed to the outer peripheral surface of the utility pole 1 with the angle of the rotation block 15 fixed, it is also possible to easily perform the operation of detecting the state of reinforcing steel breakage for various utility poles 1 having different diameters.

  On the other hand, FIG. 5 shows magnetic field data for a plurality of rebars in which a magnetic field is detected by applying one embodiment of the present invention. Referring to this, a portion where the amount of change in the magnetic field is sharp is confirmed, but it is detected that the reinforcing bar is in a broken state in a portion where the amount of change in the magnetic field is sharp.

[Other embodiments]
In other embodiments, there is a difference in the configuration of the detection unit as compared with the one embodiment. Therefore, only the configuration of the detection unit will be described in detail.

As shown in FIG. 6, the detection unit 40 includes a grip part 41, a stabilizer bar 43, a detection main body 47, and a magnetic field detection part 55.

  The grip portion 41 is a portion that provides a grip region to the worker so that the worker can move the stabilizer bar 43 and the detection main body 47 in the vertical direction of the utility pole 1.

  The grip portion can be formed in a bar shape having a predetermined length so that an operator can easily grip the grip portion. Further, the grip portion 41 is made of a plastic material or the like, so that an operator can easily grip the grip portion.

  The stabilizer bar 43 is for supporting the detection main body 47. The stabilizer bar 43 is formed so as to provide a space that can be elastically deformed when the detection main body 47 comes into close contact with the outer surface of the utility pole 1. The stabilizer bar 43 is fixed to one side extending from the grip part 41, and the other side extends so as to be curved in a direction away from the grip part 41.

  One side of the stabilizer bar 43 can be fixed to one side extending from the grip portion 41 using a bolt or the like. On the other side of the stabilizer bar 43, a fixing hole 43a is provided. A connecting portion 46 for fixing the other side of the detection main body 47 is hung on the fixing hole 43a and can be fixed. The stabilizer bar 43 can be formed of a metal material to secure rigidity.

  The detection main body 47 provides an installation area for the magnetic field detection unit 55 and is in close contact with the outer surface of the electric pole 1 so that the magnetic field detection unit 55 can detect the magnetic field of the reinforcing bar 3 embedded inside the electric pole 1. To

  One side of the detection main body 47 is rotatably connected to one side extending from the grip portion 41, and the other side is connected to the stabilizer bar 43 via elastic means 45. In addition, the detection main body 47 has one side surface in close contact with the circumferential outer surface of the utility pole by elastic deformation.

  The elastic means 45 may be a spring coupled to the other side of the detection main body 47. One side of the spring is coupled to the other side of the detection main body 47, and the other side is fixed to the connecting portion 46. The connecting portion 46 is formed in a string shape, and is fixed to the fixing hole 43a of the stabilizer bar 43 by being hung. The other side of the detection main body 47 is fixed to the stabilizer bar 43. It can be elastically deformed in the bar direction.

  The detection main body 47 includes a plurality of chain blocks 49 and an elastic band 53.

  The detection main body 47 connects the chain blocks 49 to form the detection main body 47. The angle of the mutually connected chain blocks 49 is adjusted by elastic deformation, and the detection main body 47 will be described later at a position corresponding to the reinforcing bar 3 embedded in the electric pole. Is arranged.

  The chain blocks 49 may have a substantially “H” shape, and may be interconnected in such a manner that a leading end thereof is fitted into and fixed to the rotating portion 51 at the rear end of the chain block 49 of the other party. Alternatively, the front ends of the chain blocks 49 may be arranged so as to overlap with the rear ends of the chain blocks 49 on the other side, and then the overlapping portions may be fixed to each other by the rotating portion 51.

  The rotating portion 51 can connect the chain blocks 49 adjacent to each other to fix the connection state between the chain blocks 49.

  The elastic bands 53 are connected so as to cross and pass between the chain blocks 4. The elastic band 53 provides an elastic force in a direction in which the detection main body 47 comes into close contact with the outer circumferential surface of the utility pole 1. After the elastic band 53 is installed so as to pass between the chain blocks 49, the end can be fixed to the elastic band 53 using an adhesive or the like.

  When the detection main body 47 is brought into close contact with the outer surface of the utility pole, the angle of each chain block 49 is adjusted while being pushed in the direction of the stabilizer bar 43 by the elastic means 45 so that the detection body 47 corresponds to the outer surface of the utility pole 1. In this process, when the elastic band 53 installed so as to pass between the chain blocks 49 pushes each chain block 49 in the circumferential direction, the detection main body 47 can be in close contact with the outer surface of the telephone pole.

  That is, the elastic means for elastically deforming the detection main body in the direction of the stabilizer bar and the elastic band for pushing the detection main body in the direction of the electric pole interact with each other to bring the detection main body into close contact with the outer surface of the electric pole.

  If only the elastic member is installed without installing the elastic band, the detection main body 47 does not easily adhere to the outer surface of the electric pole 1 along the outer periphery of the electric pole, and a portion that rises between the electric pole 1 and the detection main body 47 may be generated. There is.

  The magnetic field detection unit 55 can be composed of a plurality of magnetic field detection units 55 arranged at regular intervals along the length direction of the detection main body 47.

Specifically, the magnetic field detection unit 55 is installed on one side of each of the plurality of chain blocks 49, and detects a magnetic field generated from the reinforcing bar 3 in a state where the plurality of chain blocks 49 are in close contact with the outer surface of the utility pole 1. The magnetic field detector 55 can be embedded and installed on one side of each chain block 49. In the present embodiment, the magnetic field detection unit 55 is embedded and installed at the center of each chain block 49.

  The magnetic field detection unit 55 may be a magnetic sensor that measures a magnetic field that is a current generated from the reinforcing bar 3 by an electromagnetic induction phenomenon.

A receiving unit 57 is further provided on one side extending from the grip unit 41. The receiving section 57 receives the magnetic field signal detected by the magnetic field detecting section 55 and transmits the signal to the data logger unit 20. The receiving unit 57 has a box shape and may include various devices for receiving a magnetic field signal.

  Hereinafter, the operation of another embodiment will be described.

  First, a method for detecting a reinforcing bar break by bringing the detection body into close contact with the outer surface of the telephone pole in the circumferential direction will be described.

  For this reason, as shown in FIG. 7, the detection main body is brought into close contact with the outer surface of the utility pole in a state where the operator holds the holding portion 41.

  When the detection main body 47 is brought into close contact with the outer surface of the utility pole 1, the detection main body 47 adjusts the angle of each chain block 49 while being pushed in the direction of the stabilizer bar 43 by the elastic means 45, and corresponds to the outer surface of the power pole 1. . In this process, the elastic band 53 installed so as to pass between the chain blocks 49 pushes each of the chain blocks 49 in the direction of the electric pole, so that the detection main body 47 can be kept in close contact with the outer surface of the electric pole 1, The magnetic field detector 55 installed in each chain block 49 can detect the magnetic field of the reinforcing bar 3 at the corresponding position.

Thereafter, as the grip portion 41 is moved upward, the plurality of chain blocks 49 move upward together with the stabilizer bar 43, and the magnetic field detection portion 55 can detect the magnetic field of the reinforcing bar 3 in the length direction.

Even when the diameter of the utility pole 1 changes during the process of moving the grip portion 41 upward, the state in which the detection main body 47 is in close contact with the outer surface of the utility pole can be maintained by the elastic band 53 pressing each chain block 49 in the utility pole direction. Thereby, the magnetic field generated from each rebar 3 can be detected along the length direction of the rebar 3.

  The magnetic field data for the rebar 3 detected by the magnetic field detecting unit 55 is transmitted to the receiving unit 57 and then stored in the data logger unit 20.

  Further, the rupture state detection unit 30 can detect a magnetic field change for each reinforcing bar 3 based on the magnetic field data stored in the data logger unit 20 and detect the rupture state of the reinforcing bar based on the amount of change in the magnetic field.

  As described above, in the other embodiments, the operation of adjusting the angle of the detection main body so as to correspond to the outer periphery of the telephone pole does not need to be performed, so that the use is simple.

  In addition, even when the detection main body 47 is moved upward in a state where the detection main body 47 is in contact with the outer surface of the electric pole 1 on the electric pole 1 having a different upper and lower diameters, the detection main body 47 is always kept in close contact with the outer surface of the electric pole 1. Therefore, the magnetic field can be easily detected.

  The scope of the present invention is not limited to the above-described embodiments, but is defined by what is set forth in the claims, and a person having ordinary knowledge in the technical field of the present invention is described in the claims. It is self-evident that various changes and modifications can be made within the scope of the rights.

Claims (3)

A detection unit for detecting a magnetic field generated from the rebar, at a position corresponding to a plurality of rebars buried in the power pole, in close contact with a circumferential outer surface of the power pole.
A data logger unit that receives and stores magnetic field data for the rebar detected by the detection unit, and saves the data.
Look including a rupture state detecting unit for detecting the rupture state of the reinforcing bar on the basis of the variation of the magnetic field of the magnetic field data stored in the data logger module,
The detection unit includes:
A gripper that provides a gripping area to an operator,
A detection main body that is rotatably coupled to one side of the grip portion and is formed to be curved, and one side surface of which is in close contact with a circumferential outer surface of the telephone pole,
Including a plurality of magnetic field detectors installed at regular intervals along the length direction of the detection body,
The detection main body is formed to be curved by connecting a plurality of rotating blocks to each other via a fixed member so as to be rotatable relative to each other,
The magnetic field detecting unit is installed on the turning block, and the reinforcing rod rupture detecting device for a utility pole is characterized in that it is installed . 2. The apparatus according to claim 1 , wherein the fixing member is formed by a bolt and nut method, and fixes a connection state between adjacent rotation blocks. 3. A detection unit for detecting a magnetic field generated from the rebar, at a position corresponding to a plurality of rebars buried in the power pole, in close contact with a circumferential outer surface of the power pole.
A data logger unit that receives and stores magnetic field data for the rebar detected by the detection unit, and saves the data.
A break state detection unit that detects a break state of the rebar based on the amount of change in the magnetic field of the magnetic field data stored in the data logger unit,
The detection unit includes:
A gripper that provides a gripping area to an operator,
A stabilizer bar fixed to one side extending from the grip portion and extending so that the other side curves away from the grip portion;
One side is rotatably connected to one side extending from the grip portion, the other side is connected to the stabilizer bar via elastic means, and one side is closely attached to the outer circumferential surface of the telephone pole by elastic deformation. A detection body to be
Look including a plurality of magnetic field detecting portion installed at fixed intervals along the length of the sensing body,
The detection body is
A plurality of chain blocks that are rotatably coupled to each other via a rotating member;
An elastic band passing through and connected between the chain blocks,
The magnetic field detecting portion is characterized in that it is installed in the chain block, rebar break detecting device for conductive pillars.

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