WO2021186768A1 - Wire rope inspection device and wire rope inspection system - Google Patents

Wire rope inspection device and wire rope inspection system Download PDF

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Publication number
WO2021186768A1
WO2021186768A1 PCT/JP2020/036220 JP2020036220W WO2021186768A1 WO 2021186768 A1 WO2021186768 A1 WO 2021186768A1 JP 2020036220 W JP2020036220 W JP 2020036220W WO 2021186768 A1 WO2021186768 A1 WO 2021186768A1
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WO
WIPO (PCT)
Prior art keywords
coil
wire ropes
wire rope
receiving coil
wire
Prior art date
Application number
PCT/JP2020/036220
Other languages
French (fr)
Japanese (ja)
Inventor
高見　芳夫
野地　健俊
康展 伊藤
Original Assignee
株式会社島津製作所
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Application filed by 株式会社島津製作所 filed Critical 株式会社島津製作所
Priority to JP2022508037A priority Critical patent/JP7239057B2/en
Publication of WO2021186768A1 publication Critical patent/WO2021186768A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B7/00—Other common features of elevators
    • B66B7/12—Checking, lubricating, or cleaning means for ropes, cables or guides
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
    • G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws

Definitions

  • the present invention relates to a wire rope inspection device and a wire rope inspection system, and more particularly to a wire rope inspection device and a wire rope inspection system including a coil for detecting magnetic flux of a plurality of wire ropes.
  • a rope tester including a coil for detecting the magnetic flux of a plurality of wire ropes is known.
  • Such a configuration is disclosed in, for example, Japanese Patent Application Laid-Open No. 2005-89172.
  • the rope tester of JP-A-2005-89172 is provided with a plurality of magnetization detectors provided for each of the plurality of wire ropes.
  • Each of the plurality of magnetization detectors includes a pancake coil for detecting the magnetic flux of the wire rope, and is configured to detect the magnetic flux of each of the plurality of wire ropes.
  • the structure of the rope tester is simplified because the magnetization detector (panque coil) is provided for each of the plurality of wire ropes. There is a problem that it is difficult to do. Also, if the measurement conditions for multiple wire ropes, such as the number of multiple wire ropes, the spacing (pitch) between the multiple wire ropes, and the diameters of the multiple wire ropes, are different, the rope testers may be used for different measurement conditions. There is also a problem that it is difficult to use them in common.
  • the present invention has been made to solve the above-mentioned problems, and one object of the present invention is to simplify the structure of a wire rope inspection device, while simplifying the structure of a wire rope inspection apparatus, the number of a plurality of wire ropes, and a plurality of wire ropes. Wires that allow the wire rope inspection device to be commonly used for different measurement conditions even when the measurement conditions for multiple wire ropes, such as the spacing (pitch) between them and the diameters of multiple wire ropes, are different. To provide a rope inspection device and a wire rope inspection system.
  • the wire rope inspection device includes a differential coil that detects magnetic fluxes of a plurality of wire ropes, and a processing unit that acquires a detection signal detected by the differential coils.
  • the differential coil includes a first receiving coil which is a differentially connected planar coil and a second receiving coil which is a planar coil, and the first receiving coil and the second receiving coil are a plurality of wires.
  • the wire rope inspection system includes a wire rope inspection device including a differential coil for detecting magnetic fluxes of a plurality of wire ropes, a processing device for acquiring a detection signal detected by the differential coils, and a processing device.
  • the differential coil includes a first receiving coil which is a differentially connected planar coil and a second receiving coil which is a planar coil, and the first receiving coil and the second receiving coil have a plurality of wire ropes.
  • the first receiving coil and the second receiving coil are placed on each other so as to sandwich the plurality of wire ropes. Since the detection surfaces are arranged so as to face each other, the magnetic fluxes of a plurality of wire ropes are configured to be detected in common. As a result, the first receiving coil and the second receiving coil (differential coil) can be shared for a plurality of wire ropes, as compared with the case where a differential coil is provided for each of the plurality of wire ropes. Therefore, the structure of the wire rope inspection device can be simplified.
  • the wire rope inspection device can be commonly used for different measurement conditions.
  • measurement conditions for multiple wire ropes such as the number of multiple wire ropes, the spacing (pitch) between the multiple wire ropes, and the diameters of the multiple wire ropes can be determined. Even if they are different, the wire rope inspection device can be commonly used for different measurement conditions.
  • orthogonal means intersecting at an angle of 90 degrees and a vicinity of 90 degrees.
  • the wire rope inspection system 300 is a system for inspecting an abnormality (such as wire breakage) of the wire rope W, which is an inspection target and a magnetic material.
  • the wire rope inspection system 300 displays a wire rope inspection device 100 for measuring the magnetic flux of the wire rope W, a display of the measurement result of the magnetic flux of the wire rope W by the wire rope inspection device 100, and the wire rope W by the wire rope inspection device 100. It is provided with a processing device 200 that performs analysis based on the measurement result of the magnetic flux of the above.
  • the wire rope W is formed by knitting (for example, strand knitting) a magnetic wire material, and is a magnetic material made of a long material extending in the Z direction.
  • the wire rope W is inspected for its state (presence or absence of scratches or the like) by the wire rope inspection device 100 in order to prevent cutting due to deterioration.
  • the wire rope W whose degree of deterioration is determined to exceed the determined standard is replaced by the operator.
  • FIG. 1 shows an example in which the wire rope inspection device 100 inspects the wire rope W used for moving the car 111 of the elevator 110.
  • the elevator 110 includes a car 111 and a hoisting machine 112 for driving the wire rope W.
  • the elevator 110 is configured to move the car 111 in the vertical direction (Z direction) by moving the wire rope W by the hoisting machine 112.
  • the wire rope inspection device 100 inspects the wire rope W moved by the hoist 112 in a state of being fixed so as not to move with respect to the wire rope W.
  • the wire rope W is arranged so as to extend in the Z direction at the position of the wire rope inspection device 100.
  • the wire rope inspection device 100 excites the wire rope W while moving along the surface of the wire rope W in the Z direction (longitudinal direction of the wire rope W) relative to the wire rope W, and the wire rope W
  • the magnetic flux is measured by a detection coil (differential coil 11 described later).
  • the wire rope inspection device 100 measures the magnetic flux of the wire rope W while moving the wire rope W in the Z direction. It is said.
  • the magnetic flux at each position of the wire rope W in the Z direction can be measured, so that damage can be inspected at each position of the wire rope W in the Z direction.
  • the processing device 200 is, for example, a personal computer.
  • the processing device 200 is arranged in a space different from the space in which the wire rope inspection device 100 is arranged.
  • the processing device 200 includes a communication unit 201, a processing unit 202, a storage unit 203, and a display unit 204.
  • the communication unit 201 is an interface for communication, and connects the wire rope inspection device 100 and the processing device 200 in a communicable manner.
  • the processing device 200 receives the measurement result (measurement data) of the wire rope W by the wire rope inspection device 100 via the communication unit 201.
  • the processing unit 202 controls each unit of the processing device 200.
  • the processing unit 202 includes a processor such as a CPU, a memory, and the like.
  • the processing unit 202 analyzes the damage of the wire rope W such as the wire breakage based on the measurement result of the wire rope W received via the communication unit 201.
  • the storage unit 203 is, for example, a storage medium including a flash memory, and stores (stores) information such as a measurement result of the wire rope W and an analysis result of the measurement result of the wire rope W by the processing unit 202.
  • the display unit 204 is, for example, a liquid crystal monitor, and displays information such as a measurement result of the wire rope W and an analysis result of the measurement result of the wire rope W by the processing unit 202.
  • the wire rope inspection device 100 includes a detection unit 1, an electronic circuit unit 2, and a housing 3 (see FIG. 3).
  • the detection unit 1 detects (measures) the magnetic flux of the wire rope W.
  • the detection unit 1 includes a differential coil 11 and an excitation coil 12.
  • the differential coil 11 detects (measures) the magnetic flux of the wire rope W to which the magnetic field is applied by the exciting coil 12.
  • the differential coil 11 transmits a detection signal (differential signal) according to the magnetic flux of the detected wire rope W.
  • the excitation coil 12 applies magnetic flux to the wire rope W by exciting the state of magnetization of the wire rope W with an alternating current.
  • the exciting coil 12 generates a magnetic field along the Z direction (longitudinal direction and axial direction of the wire rope W) inside (inside the coil ring) by flowing an exciting alternating current, and also generates the generated magnetic field inside. It is applied to the wire rope W arranged in.
  • the excitation coil 12 is an example of the “excited portion” in the claims.
  • the electronic circuit unit 2 includes a processing unit 21, a receiving I / F (interface) 22, an excitation I / F 23, a power supply circuit 24, a storage unit 25, and a communication unit 26.
  • the processing unit 21 is configured to control each unit of the wire rope inspection device 100.
  • the processing unit 21 includes a processor such as a CPU (central processing unit), a memory, an AD converter, and the like.
  • the reception I / F 22 receives (acquires) the detection signal (differential signal) of the differential coil 11 and transmits it to the processing unit 21.
  • the receiving I / F 22 includes an amplifier.
  • the receiving I / F 22 amplifies the detection signal of the differential coil 12 by an amplifier and transmits it to the processing unit 21.
  • the excitation I / F 23 receives a control signal from the processing unit 21.
  • the excitation I / F 23 controls the supply of electric power to the excitation coil 12 based on the received control signal.
  • the power supply circuit 24 receives electric power from the outside and supplies electric power to each part of the wire rope inspection device 100 such as the excitation coil 12.
  • the storage unit 25 is, for example, a storage medium including a flash memory, and stores (stores) information such as a measurement result (measurement data) of the wire rope W.
  • the communication unit 26 is an interface for communication, and connects the wire rope inspection device 100 and the processing device 200 in a communicable manner.
  • the housing 3 includes an opening 31, a first housing portion 32, and a second housing portion 33.
  • the opening 31 is provided with a wire rope W inside the opening 31 so as to penetrate the housing 3 in the Z direction.
  • the opening 31 is configured so that a plurality of (eight) wire ropes W arranged in parallel with each other can be arranged so as to be arranged in a direction (X direction) orthogonal to each longitudinal direction (Z direction).
  • the elevator 110 (see FIG. 1) is provided with a plurality of (eight) wire ropes W.
  • the opening 31 has a longitudinal direction in the arrangement direction (X direction) of the plurality of wire ropes W, and is short in the Y direction orthogonal to the longitudinal direction (Z direction) and the arrangement direction (X direction) of the plurality of wire ropes W. It is formed to have a hand direction. Further, the opening 31 can arrange a plurality of wire ropes W having different numbers of the plurality of wire ropes W, the distance (pitch) in the X direction between the plurality of wire ropes W, the diameters of the plurality of wire ropes W, and the like. It is configured. Further, the opening 31 is configured so that a plurality of wire ropes W can be arranged in a non-contact manner.
  • the first housing portion 32 includes a first receiving coil 11a (first substrate 41) of the differential coil 11 described later, and a first coil portion 12a of the exciting coil 12 described later. It is configured to accommodate (third substrate 61). Further, the first housing portion 32 has a concave opening forming portion 32a that forms the opening portion 31 together with the opening forming portion 33a of the second housing portion 33, which will be described later. The opening forming portion 32a is configured to form the opening 31 together with the opening forming portion 33a when the first housing portion 32 and the second housing portion 33 are closed to each other (when shown in FIG. 4). ing.
  • the second housing portion 33 accommodates the second receiving coil 11b (second substrate 42) of the differential coil 11, which will be described later, and the second coil portion 12b (fourth substrate 62) of the excitation coil 12, which will be described later. It is configured in. Further, the second housing portion 33 has a concave opening forming portion 33a that forms the opening portion 31 together with the opening forming portion 32a of the first housing portion 32. The opening forming portion 33a is configured to form the opening 31 together with the opening forming portion 32a when the housing 3 is in the closed state (in the case shown in FIG. 4).
  • the first substrate 41 and the third substrate 61 housed in the first housing portion 32 have a plurality of wire ropes W on one side (Y1 direction side) with respect to the plurality of wire ropes W.
  • the first substrate 41 and the third substrate 61 are provided so as to overlap each other when viewed from the Y direction.
  • the second substrate 42 and the fourth substrate 62 housed in the second housing portion 33 have a plurality of wire ropes on the other side (Y2 direction side) with respect to the plurality of wire ropes W. It is provided so as to overlap each other in the direction in which W extends. That is, the second substrate 42 and the fourth substrate 62 are provided so as to overlap each other when viewed from the Y direction.
  • the first housing portion 32 and the second housing portion 33 are connected to each other in a divisible manner.
  • the housing 3 is in a closed state (state shown in FIG. 4) in which the first housing portion 32 and the second housing portion 33 are connected to each other, and the first housing portion 32 and the second housing portion 32.
  • the 33 is configured to be switchable between an open state (state shown in FIG. 5) divided into each other.
  • the wire rope inspection device 100 is configured such that a plurality of wire ropes W are arranged in the opening 31 with the housing 3 open. Further, the wire rope inspection device 100 is configured to inspect a plurality of wire ropes W with the housing 3 closed.
  • the housing 3 is configured so that the entire first housing portion 32 and the entire second housing portion 33 can be separated from each other (completely separated from each other) in the open state. Has been done. Further, the housing 3 is configured such that the first housing portion 32 and the second housing portion 33 are fixed to each other by a fixing tool (not shown) such as a screw in a closed state.
  • a plurality of (two) connector portions 32b and 33b are provided in the first housing portion 32 and the second housing portion 33, respectively.
  • the connector portions 32b and 33b are configured to be connected to each other in a state where the first housing portion 32 and the second housing portion 33 are connected to each other (the housing 3 is closed). Further, the connector portions 32b and 33b are connected to each other, and the first receiving coil 11a and the second receiving coil 11b of the differential coil 11 and the first coil portion 12a and the second coil portion 12b of the exciting coil 12 are connected to each other. Is configured to be electrically connected.
  • the differential coil 11 has a first receiving coil 11a which is a differentially connected planar coil and a second receiving coil 11b which is a planar coil.
  • the first receiving coil 11a and the second receiving coil 11b have their detection surfaces facing each other so as to sandwich the plurality of wire ropes W. By being arranged in, it is configured to detect the magnetic fluxes of a plurality of wire ropes W in common. That is, the differential coil 11 (first receiving coil 11a, second receiving coil 11b) is provided in common for the plurality of wire ropes W, and is configured to commonly detect the magnetic flux of the plurality of wire ropes W. ing. One differential coil 11 is provided for each of the plurality of wire ropes W. Then, the magnetic fluxes of the plurality of wire ropes W are collectively detected by one differential coil 11.
  • the plurality of wire ropes W When detecting the magnetic flux of the plurality of wire ropes W, the plurality of wire ropes W are arranged in a non-contact state between the first receiving coil 11a and the second receiving coil 11b.
  • the differential coil 11 is configured to output a differential signal between the signal obtained by the first receiving coil 11a and the signal obtained by the second receiving coil 11b as a detection signal.
  • the first receiving coil 11a is a coil provided on a flat plate-shaped first substrate (printed circuit board) 41. Specifically, the first receiving coil 11a is composed of a spiral conducting wire wound around the substrate surface of the flat plate-shaped first substrate 41.
  • the second receiving coil 11b is a coil provided on the flat plate-shaped second substrate (printed circuit board) 42. Specifically, the second receiving coil 11b is composed of a spiral conducting wire wound in the substrate surface of the flat plate-shaped second substrate 42. Further, the first receiving coil 11a and the second receiving coil 11b are arranged so that their respective detection surfaces are substantially parallel to each other.
  • the detection surfaces of the first receiving coil 11a and the second receiving coil 11b are surfaces around which the coils are wound, and are the substrate surfaces (or substrates) of the flat plate-shaped first substrate 41 and the flat plate-shaped second substrate 42. The surface is almost parallel to the back surface).
  • the first receiving coil 11a is formed in a rectangular shape when viewed from the Y direction. Specifically, the first receiving coil 11a is formed in a rectangular shape having a longitudinal direction in the X direction and a lateral direction in the Z direction. Further, the first receiving coil 11a has a width W1 in the X direction and a width W2 in the Z direction.
  • the width W1 is, for example, the width from one end of the first receiving coil 11a in the X direction to the other end.
  • the width W2 is, for example, the width from one end of the first receiving coil 11a in the Z direction to the other end.
  • the first receiving coil 11a has a plurality of conductor portions 111 extending in the X direction and a plurality of conductor portions 112 extending in the Z direction, and has a width W1 in the X direction orthogonal to the direction in which the plurality of wire ropes W extend. Is larger than the width W2 in the Z direction in which the plurality of wire ropes W extend.
  • the second receiving coil 11b has a shape corresponding to the first receiving coil 11a. That is, the second receiving coil 11b is formed in a substantially rectangular shape when viewed from the Y direction. Specifically, the second receiving coil 11b is formed in a rectangular shape having a longitudinal direction in the X direction and a lateral direction in the Z direction. Further, the second receiving coil 11b has a width W3 in the X direction and a width W4 in the Z direction.
  • the width W3 is, for example, the width from one end of the second receiving coil 11b in the X direction to the other end.
  • the width W4 is, for example, the width from one end of the second receiving coil 11b in the Z direction to the other end.
  • the second receiving coil 11b has a plurality of conducting wire portions 113 extending in the X direction and a plurality of conducting wire portions 114 extending in the Z direction, and has a width W3 in the X direction orthogonal to the direction in which the plurality of wire ropes W extend. Is larger than the width W4 in the Z direction in which the plurality of wire ropes W extend.
  • the width W3 has the same size as the width W1, and the width W4 has the same size as the width W2.
  • the first receiving coil 11a and the second receiving coil 11b are arranged from one end of the plurality of wire ropes W to the other end of the wire ropes W in the arrangement direction (X direction) of the plurality of wire ropes W. It has widths W1 and W3 that are greater than the distance D between W (see FIG. 6).
  • the first receiving coil 11a and the second receiving coil 11b are configured to overlap from the wire rope W at one end of the plurality of wire ropes W to the wire rope W at the other end when viewed from the Y direction.
  • the first receiving coil 11a and the second receiving coil 11b extend to the outside by one or more wire ropes W than the distance D between the wire ropes W at one end and the wire ropes W at the other ends, for example. It is provided in.
  • the end of the first receiving coil 11a and the end of the second receiving coil 11b are differentially connected to each other.
  • the inner end of the first receiving coil 11a and the inner end of the second receiving coil 11b are differentially connected to each other.
  • the first receiving coil 11a and the second receiving coil 11b are configured so that currents flow in opposite directions to each other.
  • the wire rope inspection device 100 applies a magnetic field to the plurality of wire ropes W in advance to adjust the magnitude and direction of the magnetization of the plurality of wire ropes W.
  • Alignment unit 50 is provided.
  • the magnetic field application unit 50 is provided in common for a plurality of wire ropes W, and is configured to apply a magnetic field in common to the plurality of wire ropes W.
  • One magnetic field application unit 50 is provided for each of the plurality of wire ropes W. Then, a magnetic field is collectively applied to the plurality of wire ropes W by one magnetic field application unit 50.
  • the magnetic field application unit 50 is provided at a position separated from the differential coil 11 in the direction in which the wire rope W extends (Z1 direction).
  • the differential coil 11 detects a change in the magnetic field of the wire rope W to which the magnetic field has been applied in advance by the magnetic field application unit 50.
  • the magnetic field application unit 50 is directed from the excitation coil 12 in the Z1 direction so that the magnetic field can be applied to the wire rope W before the excitation coil 12 applies the magnetic field to the wire rope W. It is provided at a separated position.
  • the magnetic field application unit 50 includes a magnet 51 for magnetizing and a magnet 52 for magnetizing.
  • the magnet 51 and the magnet 52 are composed of permanent magnets. Further, the magnet 51 and the magnet 52 are arranged so as to face each other in the Y direction with a plurality of wire ropes W interposed therebetween. Specifically, the magnet 51 is provided on the Y1 direction side with respect to the plurality of wire ropes W, and is configured to apply a magnetic field for magnetism to the plurality of wire ropes W from the Y1 direction side. ing.
  • the magnet 52 is provided on the Y2 direction side with respect to the plurality of wire ropes W, and is configured to apply a magnetic field for magnetism to the plurality of wire ropes W from the Y2 direction side. Further, the magnet 51 and the magnet 52 are arranged at positions equidistant from each other in the Y direction with respect to the plurality of wire ropes W. That is, in the Y direction, the distance between the magnet 51 and the wire rope W is equal to the distance between the magnet 52 and the wire rope W.
  • the magnet 51 and the magnet 52 are arranged so that the same poles (the north poles in FIG. 9) face each other with the plurality of wire ropes W interposed therebetween.
  • the north pole of the magnet 51 and the magnet 52 is shown with hatching, and the south pole of the magnet 51 and the magnet 52 is outlined without hatching. It is illustrated in.
  • the magnet 51 and the magnet 52 are arranged in a vertical direction in which the north pole and the south pole are arranged along the Y direction.
  • the magnet 51 and the magnet 52 may be arranged so that the S poles face each other with the plurality of wire ropes W interposed therebetween, or the different poles (the N pole and the S pole) face each other. It may be arranged.
  • the magnet 51 and the magnet 52 may be arranged side by side in which the north pole and the south pole are arranged along the Z direction, or the north pole and the south pole are arranged in a direction inclined with respect to the Z direction. They may be arranged diagonally side by side.
  • the excitation coil 12 is configured to commonly apply magnetic flux to a plurality of wire ropes W. That is, the excitation coil 12 is configured to commonly excite the magnetized state of the plurality of wire ropes W.
  • the excitation coil 12 is commonly provided for the plurality of wire ropes W. That is, one excitation coil 12 is provided for each of the plurality of wire ropes W. Then, the magnetic flux is collectively applied to the plurality of wire ropes W by one exciting coil 12.
  • the excitation coil 12 has a first coil portion 12a and a second coil portion 12b.
  • the first coil portion 12a and the second coil portion 12b are provided so as to face each other with a plurality of wire ropes W interposed therebetween. Further, the first coil portion 12a and the second coil portion 12b are configured to be electrically connected to each other via the connector portions 32b and 33b (see FIG. 5).
  • the excitation coil 12 is configured so that a current flows through the first coil portion 12a and the second coil portion 12b so that the current flows around the plurality of wire ropes W (in a swirling manner). ..
  • the first coil portion 12a and the second coil portion 12b are examples of the "first exciting portion” and the "second exciting portion” in the claims, respectively.
  • the first coil portion 12a is provided on a flat plate-shaped third substrate (printed circuit board) 61.
  • the first coil portion 12a has a plurality of terminal portions 121 and a plurality of conducting wire portions 122 that electrically connect the two terminal portions 121 corresponding to each other.
  • the plurality of terminal portions 121 are configured to be electrically connected to the plurality of terminal portions 123 described later of the second coil portion 12b via the connector portions 32b and 33b.
  • the plurality of conducting wire portions 122 are provided so as to extend in a direction inclined with respect to the X direction.
  • the second coil portion 12b is provided on a flat plate-shaped fourth substrate (printed circuit board) 62.
  • the second coil portion 12b has a plurality of terminal portions 123 and a plurality of conducting wire portions 124 that electrically connect the two terminal portions 123 corresponding to each other.
  • the plurality of terminal portions 123 are configured to be electrically connected to the plurality of terminal portions 121 of the first coil portion 12a via the connector portions 32b and 33b.
  • the plurality of conducting wire portions 124 are provided so as to extend in the X direction.
  • the exciting coil 12 travels around the plurality of wire ropes W a plurality of times by flowing a current through the terminal portions 121 and 123 of the first coil portion 12a and the second coil portion 12b and the conducting wire portions 122 and 124 in the order of connection. It is configured so that an orbiting current flows.
  • first coil portion 12a (third substrate 61) of the excitation coil 12 is provided on the outside (Y1 direction side) with respect to the first receiving coil 11a (first substrate 41) of the differential coil 11.
  • second coil portion 12b (fourth substrate 62) of the excitation coil 12 is provided on the outside (Y2 direction side) with respect to the second receiving coil 11b (second substrate 42) of the differential coil 11. That is, the differential coil 11 is arranged inside the excitation coil 12 (inside the ring of the coil). The differential coil 11 may be arranged outside the excitation coil 12 (outside the ring of the coil).
  • the first receiving coil 11a and the second receiving coil 11b are arranged so that their detection surfaces face each other so as to sandwich the plurality of wire ropes W. It is configured to detect the magnetic fluxes of a plurality of wire ropes W in common. As a result, the first receiving coil 11a and the second receiving coil 11b (differential coil 11) can be shared for the plurality of wire ropes W, so that the differential coil for each of the plurality of wire ropes W can be shared. Compared with the case where 11 is provided, the structure of the wire rope inspection device 100 can be simplified.
  • the wire rope inspection device 100 can be commonly used for different measurement conditions.
  • the wire rope inspection device 100 while simplifying the structure of the wire rope inspection device 100, a plurality of wire ropes such as the number of a plurality of wire ropes W, the spacing (pitch) between the plurality of wire ropes W, and the diameters of the plurality of wire ropes W are obtained. Even when the measurement conditions related to W are different, the wire rope inspection device 100 can be commonly used for different measurement conditions.
  • the first receiving coil 11a and the second receiving coil 11b are arranged from one end of the plurality of wire ropes W to the other end in the arrangement direction of the plurality of wire ropes W. It is configured to have widths W1 and W3 that are greater than the distance D between the wire ropes W. As a result, the first receiving coil 11a and the second receiving coil 11b can be made to face the plurality of wire ropes W over the entire plurality of wire ropes W in the arrangement direction of the plurality of wire ropes W. As a result, even when the first receiving coil 11a and the second receiving coil 11b (differential coil) are shared for the plurality of wire ropes W, the magnetic fluxes of the plurality of wire ropes W can be easily and surely detected. Can be done.
  • the wire rope inspection device 100 is provided with the flat plate-shaped first substrate 41 provided with the first receiving coil 11a and the flat plate-shaped first substrate 41 provided with the second receiving coil 11b. It is configured to include two substrates 42. As a result, the first substrate 41 provided with the first receiving coil 11a and the second substrate 42 provided with the second receiving coil 11b are provided independently of each other, so that the first receiving coil 11a and the first The two receiving coils 11b can be easily arranged so as to sandwich the plurality of wire ropes W. Further, when the housing 3 has a divided structure as in the present embodiment, the housing 3 can be easily divided because the first substrate 41 and the second substrate 42 are provided independently of each other. Can be done.
  • the wire rope inspection device 100 is configured to include an exciting coil 12 (excited portion) that commonly applies magnetic flux to a plurality of wire ropes W.
  • the excitation coil 12 can be shared for the plurality of wire ropes W, so that the structure of the wire rope inspection device 100 is as compared with the case where the excitation coil 12 is provided for each of the plurality of wire ropes W. Can be simplified.
  • the exciting coil 12 faces the first coil portion 12a (first excited portion) and the first coil portion 12a so as to sandwich the plurality of wire ropes W. It is configured to include a second coil portion 12b (second exciting portion) provided so as to be provided.
  • the first coil portion 12a and the second coil portion 12b provided so as to face the first coil portion 12a so as to sandwich the plurality of wire ropes W can easily apply magnetic flux to the plurality of wire ropes W. It can be applied in common.
  • the exciting coil 12 (excited portion) has the first coil portion 12a and the second coil portion 12b, and the magnetized states of the plurality of wire ropes W are common.
  • the wire rope inspection device 100 is configured to include a flat plate-shaped third substrate 61 provided with the first coil portion 12a and a flat plate-shaped fourth substrate 62 provided with the second coil portion 12b. do.
  • the third substrate 61 provided with the first coil portion 12a and the fourth substrate 62 provided with the second coil portion 12b are provided independently of each other, so that the first coil portion 12a and the first coil portion 12a are provided.
  • the two coil portions 12b can be easily arranged so as to sandwich the plurality of wire ropes W.
  • the excitation coil 12 is wound around the plurality of wire ropes W.
  • the structure of the wire rope inspection device 100 can be simplified as compared with the case where the wire rope inspection device 100 is provided. Further, when the housing 3 has a divided structure as in the present embodiment, the housing 3 can be easily divided because the third substrate 61 and the fourth substrate 62 are provided independently of each other. Can be done.
  • the first substrate 41 and the third substrate 61 overlap each other on one side with respect to the plurality of wire ropes W in the direction in which the plurality of wire ropes W extend.
  • the second substrate 42 and the fourth substrate 62 are provided on the other side of the plurality of wire ropes W so as to overlap each other in the direction in which the plurality of wire ropes W extend.
  • the plurality of wire ropes W extend from the first substrate 41 and the third substrate 61 as compared with the case where the first substrate 41 and the third substrate 61 do not overlap each other in the direction in which the plurality of wire ropes W extend.
  • the wire rope inspection device 100 can be miniaturized in the direction in which the plurality of wire ropes W extend by the amount of overlapping in the directions. Further, as compared with the case where the second substrate 42 and the fourth substrate 62 are not overlapped with each other in the direction in which the plurality of wire ropes W extend, the direction in which the plurality of wire ropes W extend in the second substrate 42 and the fourth substrate 62. The wire rope inspection device 100 can be miniaturized in the direction in which the plurality of wire ropes W extend by the amount of overlapping with each other.
  • the wire rope inspection device 100 includes the first housing portion 32 accommodating the first receiving coil 11a and the second housing portion 33 accommodating the second receiving coil 11b. It is configured to include the housing 3 including the above. Further, the first housing portion 32 and the second housing portion 33 are connected to each other in a separable manner. As a result, the first housing portion 32 accommodating the first receiving coil 11a and the second housing portion 33 accommodating the second receiving coil 11b can be separated from each other, so that the first receiving coil 11a and the first receiving coil 11a can be separated from each other. A plurality of wire ropes W can be easily arranged between the two receiving coils 11b.
  • the widths W1 and W3 in the direction orthogonal to the extending direction of the plurality of wire ropes W have the widths W1 and W3, and the plurality of wire ropes W have a plurality of wire ropes W. It is larger than the widths W2 and W4 in the extending direction.
  • the widths W1 and W3 in the direction orthogonal to the extending direction of the plurality of wire ropes W are made larger than the widths W2 and W4 in the direction in which the plurality of wire ropes W extend, so that the first receiving coil 11a and the second receiving are received.
  • the coil 11b can detect the magnetic flux of the plurality of wire ropes W in a wide range, and the widths W2 and W4 in the direction in which the plurality of wire ropes W extend are the widths W1 and W1 in the direction orthogonal to the direction in which the plurality of wire ropes W extend. By making it smaller than W3, it is possible to prevent the wire rope inspection device 100 from becoming larger in the direction in which the plurality of wire ropes W extend.
  • the wire rope inspection device 100 applies a magnetic field to the plurality of wire ropes W in advance to adjust the magnitude and direction of the magnetization of the plurality of wire ropes W. It is configured to include an application unit 50. As a result, a magnetic field is applied to the plurality of wire ropes W in advance, so that the magnitude and direction of magnetization of the plurality of wire ropes W can be made constant. As a result, the noise of the detection signal output from the differential coil 11 can be reduced, so that the S / N ratio of the detection signal can be improved. Therefore, by improving the S / N ratio of the detection signal, the state (presence or absence of abnormality) of the plurality of wire ropes W can be inspected more accurately.
  • the wire rope inspection system is an example of a system for inspecting a wire rope used in an elevator, but the present invention is not limited to this.
  • the wire rope inspection system may be a system for inspecting wire ropes used for cranes, suspension bridges, robots, and the like.
  • the wire rope inspection device measures the magnetic flux of the wire rope while moving the wire rope inspection device along the wire rope. You just have to be.
  • first receiving coil and the second receiving coil are formed in a rectangular shape, but the present invention is not limited to this.
  • the first receiving coil and the second receiving coil may be formed in an elliptical shape.
  • the wire rope inspection device includes an exciting coil as an exciting portion, but the present invention is not limited to this.
  • the wire rope inspection device may include an exciting part such as a permanent magnet other than the exciting coil as the exciting part.
  • the wire rope inspection device shows an example in which the first housing portion and the second housing portion are configured so as to be completely separable, but the present invention is not limited to this.
  • the first housing portion and the second housing portion may be connected via a hinge portion.
  • the magnetic field application unit is provided at a position separated from the differential coil on the Z1 direction side, but the present invention is not limited to this.
  • the magnetic field application portion may be provided at both a position separated from the differential coil on the Z1 direction side and a position separated on the Z2 direction side.
  • the first receiving coil of the differential coil is provided on the first substrate
  • the second receiving coil of the differential coil is provided on the second substrate
  • the first coil portion of the exciting coil is provided on the third substrate.
  • the present invention is not limited to this, although an example is shown in which the second coil portion of the excitation coil is provided on the fourth substrate.
  • the first receiving coil 11a of the differential coil 11 and the first coil portion 12a of the exciting coil 12 are provided on the common first multilayer substrate 71, and the differential coil 11 is provided.
  • the second receiving coil 11b and the second coil portion 12b of the exciting coil 12 may be provided on the common second multilayer substrate 72.
  • the number of parts is reduced as compared with the case where the substrate is provided independently of the first receiving coil 11a, the first coil portion 12a, the second receiving coil 11b, and the second coil portion 12b.
  • the structure of the wire rope inspection device 100 can be simplified.
  • the processing unit 421 of the wire rope inspection device 400 acquires the detection signal detected by the differential coil 11, and the state of the wire rope W based on the acquired detection signal. It may be configured to make a determination. In this case, the processing unit 421 may be configured to output the state determination result of the wire rope W to the processing device 200 via the communication unit 26.
  • a differential coil that detects the magnetic flux of multiple wire ropes A processing unit that acquires a detection signal detected by the differential coil is provided.
  • the differential coil includes a first receiving coil which is a differentially connected planar coil and a second receiving coil which is a planar coil.
  • the first receiving coil and the second receiving coil are arranged so that their detection surfaces face each other so as to sandwich the plurality of wire ropes, so that the magnetic fluxes of the plurality of wire ropes can be shared in common.
  • a wire rope inspection device that is configured to detect.
  • the first receiving coil and the second receiving coil have a width larger than the distance between the wire rope at one end and the wire rope at the other end of the plurality of wire ropes in the arrangement direction of the plurality of wire ropes.
  • Item 1 The wire rope inspection apparatus.
  • the wire rope inspection apparatus (Item 5) The wire rope inspection apparatus according to item 4, wherein the exciting portion includes a first exciting portion and a second exciting portion provided so as to face the first exciting portion so as to sandwich the plurality of wire ropes. ..
  • the exciting portion has a first coil portion as the first exciting portion and a second coil portion as the second exciting portion, and is an exciting coil that commonly excites the magnetized state of the plurality of wire ropes.
  • the exciting portion has a first coil portion as the first exciting portion and a second coil portion as the second exciting portion, and is an exciting coil that commonly excites the magnetized state of the plurality of wire ropes.
  • a flat plate-shaped first substrate provided with the first receiving coil and A flat plate-shaped second substrate provided with the second receiving coil is further provided.
  • the first substrate and the third substrate are provided on one side of the plurality of wire ropes so as to overlap each other in the direction in which the plurality of wire ropes extend.
  • Item 6 The wire according to item 6, wherein the second substrate and the fourth substrate are provided on the other side of the plurality of wire ropes so as to overlap each other in a direction in which the plurality of wire ropes extend.
  • Rope inspection device is provided.
  • a housing including a first housing portion for accommodating the first receiving coil and a second housing portion for accommodating the second receiving coil is further provided.
  • the wire rope inspection device according to any one of items 1 to 7, wherein the first housing portion and the second housing portion are connected to each other in a divisible manner.
  • the width in the direction orthogonal to the extending direction of the plurality of wire ropes is larger than the width in the direction in which the plurality of wire ropes extend.
  • (Item 10) Item 2.
  • Rope inspection device for adjusting the magnitude and direction of magnetization of the plurality of wire ropes by applying a magnetic field to the plurality of wire ropes in advance.
  • a wire rope inspection device equipped with a differential coil that detects the magnetic flux of multiple wire ropes, A processing device for acquiring a detection signal detected by the differential coil is provided.
  • the differential coil includes a first receiving coil which is a differentially connected planar coil and a second receiving coil which is a planar coil.
  • the first receiving coil and the second receiving coil are arranged so that their detection surfaces face each other so as to sandwich the plurality of wire ropes, so that the magnetic fluxes of the plurality of wire ropes can be shared in common.
  • a wire rope inspection system that is configured to detect.

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Abstract

This wire rope inspection device (100) is provided with a differential coil (11) that detects magnetic fluxes of a plurality of wire ropes (W). The differential coil includes a first receiving coil (11a) and a second receiving coil (11b). The first receiving coil and the second receiving coil are disposed so that detection surfaces thereof face each other so with the plurality of wire ropes sandwiched therebetween, and are thus configured to detect the magnetic fluxes of the plurality of wire ropes in common.

Description

ワイヤロープ検査装置およびワイヤロープ検査システムWire rope inspection equipment and wire rope inspection system
　本発明は、ワイヤロープ検査装置およびワイヤロープ検査システムに関し、特に、複数のワイヤロープの磁束を検知するコイルを備えるワイヤロープ検査装置およびワイヤロープ検査システムに関する。 The present invention relates to a wire rope inspection device and a wire rope inspection system, and more particularly to a wire rope inspection device and a wire rope inspection system including a coil for detecting magnetic flux of a plurality of wire ropes.
　従来、複数のワイヤロープの磁束を検知するコイルを備えるロープテスタが知られている。このような構成は、たとえば、特開２００５－８９１７２号公報に開示されている。 Conventionally, a rope tester including a coil for detecting the magnetic flux of a plurality of wire ropes is known. Such a configuration is disclosed in, for example, Japanese Patent Application Laid-Open No. 2005-89172.
　上記特開２００５－８９１７２号公報のロープテスタは、複数のワイヤロープの各々に対して設けられた複数の磁化検出体を備えている。複数の磁化検出体の各々は、ワイヤロープの磁束を検出するためのパンケーキコイルを含み、複数のワイヤロープの各々の磁束を検知するように構成されている。 The rope tester of JP-A-2005-89172 is provided with a plurality of magnetization detectors provided for each of the plurality of wire ropes. Each of the plurality of magnetization detectors includes a pancake coil for detecting the magnetic flux of the wire rope, and is configured to detect the magnetic flux of each of the plurality of wire ropes.
特開２００５－８９１７２号公報Japanese Unexamined Patent Publication No. 2005-89172
　しかしながら、上記特開２００５－８９１７２号公報に記載されているロープテスタでは、磁化検出体（パンケーキコイル）が複数のワイヤロープの各々に対して設けられているため、ロープテスタの構造を簡素化することが困難であるという問題点がある。また、複数のワイヤロープの数、複数のワイヤロープの間の間隔（ピッチ）、複数のワイヤロープの径などの複数のワイヤロープに関する計測条件が異なる場合、ロープテスタを互いに異なる計測条件に対して共通に利用することが困難であるという問題点もある。 However, in the rope tester described in JP-A-2005-89172, the structure of the rope tester is simplified because the magnetization detector (panque coil) is provided for each of the plurality of wire ropes. There is a problem that it is difficult to do. Also, if the measurement conditions for multiple wire ropes, such as the number of multiple wire ropes, the spacing (pitch) between the multiple wire ropes, and the diameters of the multiple wire ropes, are different, the rope testers may be used for different measurement conditions. There is also a problem that it is difficult to use them in common.
　この発明は、上記のような課題を解決するためになされたものであり、この発明の１つの目的は、ワイヤロープ検査装置の構造を簡素化しつつ、複数のワイヤロープの数、複数のワイヤロープの間の間隔（ピッチ）、複数のワイヤロープの径などの複数のワイヤロープに関する計測条件が異なる場合にも、ワイヤロープ検査装置を互いに異なる計測条件に対して共通に利用することが可能なワイヤロープ検査装置およびワイヤロープ検査システムを提供することである。 The present invention has been made to solve the above-mentioned problems, and one object of the present invention is to simplify the structure of a wire rope inspection device, while simplifying the structure of a wire rope inspection apparatus, the number of a plurality of wire ropes, and a plurality of wire ropes. Wires that allow the wire rope inspection device to be commonly used for different measurement conditions even when the measurement conditions for multiple wire ropes, such as the spacing (pitch) between them and the diameters of multiple wire ropes, are different. To provide a rope inspection device and a wire rope inspection system.
　上記目的を達成するために、この発明の第１の局面におけるワイヤロープ検査装置は、複数のワイヤロープの磁束を検知する差動コイルと、差動コイルにより検知された検知信号を取得する処理部と、を備え、差動コイルは、差動接続された平面コイルである第１受信コイルと平面コイルである第２受信コイルとを含み、第１受信コイルおよび第２受信コイルは、複数のワイヤロープを挟むように、互いの検知面同士が対向するように配置されていることにより、複数のワイヤロープの磁束を共通に検知するように構成されている。 In order to achieve the above object, the wire rope inspection device according to the first aspect of the present invention includes a differential coil that detects magnetic fluxes of a plurality of wire ropes, and a processing unit that acquires a detection signal detected by the differential coils. The differential coil includes a first receiving coil which is a differentially connected planar coil and a second receiving coil which is a planar coil, and the first receiving coil and the second receiving coil are a plurality of wires. By arranging the detection surfaces to face each other so as to sandwich the rope, the magnetic fluxes of a plurality of wire ropes are commonly detected.
　この発明の第２の局面におけるワイヤロープ検査システムは、複数のワイヤロープの磁束を検知する差動コイルを備えるワイヤロープ検査装置と、差動コイルにより検知された検知信号を取得する処理装置と、を備え、差動コイルは、差動接続された平面コイルである第１受信コイルと平面コイルである第２受信コイルとを含み、第１受信コイルおよび第２受信コイルは、複数のワイヤロープを挟むように、互いの検知面同士が対向するように配置されていることにより、複数のワイヤロープの磁束を共通に検知するように構成されている。 The wire rope inspection system according to the second aspect of the present invention includes a wire rope inspection device including a differential coil for detecting magnetic fluxes of a plurality of wire ropes, a processing device for acquiring a detection signal detected by the differential coils, and a processing device. The differential coil includes a first receiving coil which is a differentially connected planar coil and a second receiving coil which is a planar coil, and the first receiving coil and the second receiving coil have a plurality of wire ropes. By arranging the detection surfaces so as to face each other so as to sandwich the wire ropes, the magnetic fluxes of a plurality of wire ropes are commonly detected.
　上記第１の局面におけるワイヤロープ検査装置および上記第２の局面におけるワイヤロープ検査システムでは、上記のように、第１受信コイルおよび第２受信コイルを、複数のワイヤロープを挟むように、互いの検知面同士が対向するように配置されていることにより、複数のワイヤロープの磁束を共通に検知するように構成する。これにより、複数のワイヤロープに対して第１受信コイルおよび第２受信コイル（差動コイル）を共通化することができるので、複数のワイヤロープの各々に対して差動コイルを設ける場合に比べて、ワイヤロープ検査装置の構造を簡素化することができる。また、１組の第１受信コイルおよび第２受信コイルにより、複数のワイヤロープの磁束を共通に検知することができるので、複数のワイヤロープの数、複数のワイヤロープの間の間隔（ピッチ）、複数のワイヤロープの径などの複数のワイヤロープに関する計測条件が異なる場合にも、ワイヤロープ検査装置を互いに異なる計測条件に対して共通に利用することができる。これらの結果、ワイヤロープ検査装置の構造を簡素化しつつ、複数のワイヤロープの数、複数のワイヤロープの間の間隔（ピッチ）、複数のワイヤロープの径などの複数のワイヤロープに関する計測条件が異なる場合にも、ワイヤロープ検査装置を互いに異なる計測条件に対して共通に利用することができる。 In the wire rope inspection device in the first aspect and the wire rope inspection system in the second aspect, as described above, the first receiving coil and the second receiving coil are placed on each other so as to sandwich the plurality of wire ropes. Since the detection surfaces are arranged so as to face each other, the magnetic fluxes of a plurality of wire ropes are configured to be detected in common. As a result, the first receiving coil and the second receiving coil (differential coil) can be shared for a plurality of wire ropes, as compared with the case where a differential coil is provided for each of the plurality of wire ropes. Therefore, the structure of the wire rope inspection device can be simplified. Further, since the magnetic flux of a plurality of wire ropes can be detected in common by one set of the first receiving coil and the second receiving coil, the number of the plurality of wire ropes and the interval (pitch) between the plurality of wire ropes are increased. , Even when the measurement conditions for a plurality of wire ropes such as the diameters of the plurality of wire ropes are different, the wire rope inspection device can be commonly used for different measurement conditions. As a result, while simplifying the structure of the wire rope inspection device, measurement conditions for multiple wire ropes such as the number of multiple wire ropes, the spacing (pitch) between the multiple wire ropes, and the diameters of the multiple wire ropes can be determined. Even if they are different, the wire rope inspection device can be commonly used for different measurement conditions.
一実施形態によるワイヤロープ検査装置が設けられている昇降路およびエレベータを示した模式図である。It is a schematic diagram which showed the hoistway and the elevator provided with the wire rope inspection apparatus by one Embodiment. 一実施形態によるワイヤロープ検査装置の構成を示したブロック図である。It is a block diagram which showed the structure of the wire rope inspection apparatus by one Embodiment. 一実施形態によるワイヤロープ検査装置の模式的な斜視図である。It is a schematic perspective view of the wire rope inspection apparatus according to one Embodiment. 一実施形態によるワイヤロープ検査装置の筐体が閉じた状態を示す模式的な側面図である。It is a schematic side view which shows the state which the housing of the wire rope inspection apparatus by one Embodiment is closed. 一実施形態によるワイヤロープ検査装置の筐体が開いた状態を示す模式的な側面図である。It is a schematic side view which shows the state which the housing of the wire rope inspection apparatus by one Embodiment is opened. 一実施形態によるワイヤロープ検査装置の差動コイルを説明するための模式的な平面図である。It is a schematic plan view for demonstrating the differential coil of the wire rope inspection apparatus according to one Embodiment. 一実施形態によるワイヤロープ検査装置の差動コイルを説明するための模式的な斜視図である。It is a schematic perspective view for demonstrating the differential coil of the wire rope inspection apparatus according to one Embodiment. 一実施形態による差動接続された差動コイルの第１受信コイルおよび第２受信コイルを示す模式図である。It is a schematic diagram which shows the 1st receiving coil and the 2nd receiving coil of the differential coil differentially connected by one Embodiment. 一実施形態による磁界印加部の構成を説明するための模式図である。It is a schematic diagram for demonstrating the structure of the magnetic field application part by one Embodiment. 一実施形態によるワイヤロープ検査装置の励振コイルを説明するための模式的な平面図である。It is a schematic plan view for demonstrating the excitation coil of the wire rope inspection apparatus according to one Embodiment. 一実施形態によるワイヤロープ検査装置の励振コイルを説明するための模式的な斜視図である。It is a schematic perspective view for demonstrating the excitation coil of the wire rope inspection apparatus according to one Embodiment. 一実施形態の変形例によるワイヤロープ検査装置を説明するための模式的な側面図である。It is a schematic side view for demonstrating the wire rope inspection apparatus by the modification of one Embodiment. 一実施形態の変形例によるワイヤロープ検査装置の構成を示したブロック図である。It is a block diagram which showed the structure of the wire rope inspection apparatus by the modification of one Embodiment.
　以下、本発明を具体化した実施形態を図面に基づいて説明する。 Hereinafter, embodiments embodying the present invention will be described with reference to the drawings.
　図１～図１１を参照して、一実施形態によるワイヤロープ検査システム３００の構成について説明する。なお、以下の説明において、「直交」とは、９０度および９０度近傍の角度をなして交差することを意味する。 The configuration of the wire rope inspection system 300 according to one embodiment will be described with reference to FIGS. 1 to 11. In the following description, "orthogonal" means intersecting at an angle of 90 degrees and a vicinity of 90 degrees.
（ワイヤロープ検査システムの構成）
　図１に示すように、ワイヤロープ検査システム３００は、検査対象物であり磁性体であるワイヤロープＷの異常（素線断線など）を検査するためのシステムである。ワイヤロープ検査システム３００は、ワイヤロープＷの磁束を計測するワイヤロープ検査装置１００と、ワイヤロープ検査装置１００によるワイヤロープＷの磁束の計測結果の表示、および、ワイヤロープ検査装置１００によるワイヤロープＷの磁束の計測結果に基づく解析などを行う処理装置２００とを備えている。ワイヤロープ検査システム３００によりワイヤロープＷの異常を検査することにより、目視により確認しにくいワイヤロープＷの異常を確認可能である。 (Structure of wire rope inspection system)
As shown in FIG. 1, the wire rope inspection system 300 is a system for inspecting an abnormality (such as wire breakage) of the wire rope W, which is an inspection target and a magnetic material. The wire rope inspection system 300 displays a wire rope inspection device 100 for measuring the magnetic flux of the wire rope W, a display of the measurement result of the magnetic flux of the wire rope W by the wire rope inspection device 100, and the wire rope W by the wire rope inspection device 100. It is provided with a processing device 200 that performs analysis based on the measurement result of the magnetic flux of the above. By inspecting the abnormality of the wire rope W with the wire rope inspection system 300, it is possible to confirm the abnormality of the wire rope W which is difficult to visually confirm.
　ワイヤロープＷは、磁性を有する素線材料が編みこまれる（たとえば、ストランド編みされる）ことにより形成されており、Ｚ方向に延びる長尺材からなる磁性体である。ワイヤロープＷは、劣化による切断が生じることを未然に防ぐために、ワイヤロープ検査装置１００により状態（傷等の有無）を検査されている。ワイヤロープＷの磁束の計測の結果、劣化の程度が決められた基準を超えたと判断されるワイヤロープＷは、作業者により交換される。 The wire rope W is formed by knitting (for example, strand knitting) a magnetic wire material, and is a magnetic material made of a long material extending in the Z direction. The wire rope W is inspected for its state (presence or absence of scratches or the like) by the wire rope inspection device 100 in order to prevent cutting due to deterioration. As a result of measuring the magnetic flux of the wire rope W, the wire rope W whose degree of deterioration is determined to exceed the determined standard is replaced by the operator.
　図１では、ワイヤロープ検査装置１００が、エレベータ１１０のかご１１１の移動に用いられるワイヤロープＷを検査する例を示している。エレベータ１１０は、かご１１１と、ワイヤロープＷを駆動するための巻き上げ機１１２とを備えている。エレベータ１１０は、巻き上げ機１１２によりワイヤロープＷを移動させることにより、かご１１１を上下方向（Ｚ方向）に移動させるように構成されている。ワイヤロープ検査装置１００は、ワイヤロープＷに対して移動しないように固定された状態で、巻き上げ機１１２により移動されるワイヤロープＷの傷みを検査する。 FIG. 1 shows an example in which the wire rope inspection device 100 inspects the wire rope W used for moving the car 111 of the elevator 110. The elevator 110 includes a car 111 and a hoisting machine 112 for driving the wire rope W. The elevator 110 is configured to move the car 111 in the vertical direction (Z direction) by moving the wire rope W by the hoisting machine 112. The wire rope inspection device 100 inspects the wire rope W moved by the hoist 112 in a state of being fixed so as not to move with respect to the wire rope W.
　ワイヤロープＷは、ワイヤロープ検査装置１００の位置において、Ｚ方向に延びるように配置されている。ワイヤロープ検査装置１００は、ワイヤロープＷの表面に沿って、ワイヤロープＷに対して相対的にＺ方向（ワイヤロープＷの長手方向）に移動しながら、ワイヤロープＷを励磁し、ワイヤロープＷの磁束を検知コイル（後述する差動コイル１１）により計測する。エレベータ１１０に使用されるワイヤロープＷのように、ワイヤロープＷ自体が移動する場合には、ワイヤロープＷをＺ方向に移動させながら、ワイヤロープ検査装置１００によるワイヤロープＷの磁束の計測が行われる。これにより、ワイヤロープＷのＺ方向の各位置における磁束を計測することができるので、ワイヤロープＷのＺ方向の各位置における傷みを検査可能である。 The wire rope W is arranged so as to extend in the Z direction at the position of the wire rope inspection device 100. The wire rope inspection device 100 excites the wire rope W while moving along the surface of the wire rope W in the Z direction (longitudinal direction of the wire rope W) relative to the wire rope W, and the wire rope W The magnetic flux is measured by a detection coil (differential coil 11 described later). When the wire rope W itself moves like the wire rope W used for the elevator 110, the wire rope inspection device 100 measures the magnetic flux of the wire rope W while moving the wire rope W in the Z direction. It is said. As a result, the magnetic flux at each position of the wire rope W in the Z direction can be measured, so that damage can be inspected at each position of the wire rope W in the Z direction.
（処理装置の構成）
　図１に示すように、処理装置２００は、たとえばパーソナルコンピュータである。処理装置２００は、ワイヤロープ検査装置１００が配置される空間とは違う空間に配置されている。処理装置２００は、通信部２０１と、処理部２０２と、記憶部２０３と、表示部２０４とを備えている。通信部２０１は、通信用のインターフェースであり、ワイヤロープ検査装置１００と処理装置２００とを通信可能に接続する。処理装置２００は、通信部２０１を介して、ワイヤロープ検査装置１００によるワイヤロープＷの計測結果（計測データ）を受信する。処理部２０２は、処理装置２００の各部を制御する。処理部２０２は、ＣＰＵなどのプロセッサ、メモリなどを含んでいる。処理部２０２は、通信部２０１を介して受信したワイヤロープＷの計測結果に基づいて、素線断線などのワイヤロープＷの傷みを解析する。記憶部２０３は、たとえばフラッシュメモリを含む記憶媒体であり、ワイヤロープＷの計測結果、処理部２０２によるワイヤロープＷの計測結果の解析結果などの情報を記憶（保存）する。表示部２０４は、たとえば液晶モニタであり、ワイヤロープＷの計測結果、処理部２０２によるワイヤロープＷの計測結果の解析結果などの情報を表示する。 (Configuration of processing equipment)
As shown in FIG. 1, the processing device 200 is, for example, a personal computer. The processing device 200 is arranged in a space different from the space in which the wire rope inspection device 100 is arranged. The processing device 200 includes a communication unit 201, a processing unit 202, a storage unit 203, and a display unit 204. The communication unit 201 is an interface for communication, and connects the wire rope inspection device 100 and the processing device 200 in a communicable manner. The processing device 200 receives the measurement result (measurement data) of the wire rope W by the wire rope inspection device 100 via the communication unit 201. The processing unit 202 controls each unit of the processing device 200. The processing unit 202 includes a processor such as a CPU, a memory, and the like. The processing unit 202 analyzes the damage of the wire rope W such as the wire breakage based on the measurement result of the wire rope W received via the communication unit 201. The storage unit 203 is, for example, a storage medium including a flash memory, and stores (stores) information such as a measurement result of the wire rope W and an analysis result of the measurement result of the wire rope W by the processing unit 202. The display unit 204 is, for example, a liquid crystal monitor, and displays information such as a measurement result of the wire rope W and an analysis result of the measurement result of the wire rope W by the processing unit 202.
（ワイヤロープ検査装置の構成）
　図２および図３に示すように、ワイヤロープ検査装置１００は、検知部１と、電子回路部２と、筐体３（図３参照）とを備えている。検知部１は、ワイヤロープＷの磁束を検知（計測）する。具体的には、検知部１は、差動コイル１１と、励振コイル１２とを含んでいる。差動コイル１１は、励振コイル１２により磁界が印加されたワイヤロープＷの磁束を検知（計測）する。差動コイル１１は、検知したワイヤロープＷの磁束に応じた検知信号（差動信号）を送信する。励振コイル１２は、ワイヤロープＷの磁化の状態を交流電流により励振することにより、ワイヤロープＷに磁束を印加する。励振コイル１２は、励振交流電流が流れることにより、Ｚ方向（ワイヤロープＷの長手方向、軸方向）に沿った磁界を内部（コイルの輪の内側）に発生させるとともに、発生させた磁界を内部に配置されたワイヤロープＷに印加する。なお、励振コイル１２は、請求の範囲の「励磁部」の一例である。 (Structure of wire rope inspection device)
As shown in FIGS. 2 and 3, the wire rope inspection device 100 includes a detection unit 1, an electronic circuit unit 2, and a housing 3 (see FIG. 3). The detection unit 1 detects (measures) the magnetic flux of the wire rope W. Specifically, the detection unit 1 includes a differential coil 11 and an excitation coil 12. The differential coil 11 detects (measures) the magnetic flux of the wire rope W to which the magnetic field is applied by the exciting coil 12. The differential coil 11 transmits a detection signal (differential signal) according to the magnetic flux of the detected wire rope W. The excitation coil 12 applies magnetic flux to the wire rope W by exciting the state of magnetization of the wire rope W with an alternating current. The exciting coil 12 generates a magnetic field along the Z direction (longitudinal direction and axial direction of the wire rope W) inside (inside the coil ring) by flowing an exciting alternating current, and also generates the generated magnetic field inside. It is applied to the wire rope W arranged in. The excitation coil 12 is an example of the “excited portion” in the claims.
　電子回路部２は、処理部２１と、受信Ｉ／Ｆ（インターフェース）２２と、励振Ｉ／Ｆ２３と、電源回路２４と、記憶部２５と、通信部２６とを含んでいる。処理部２１は、ワイヤロープ検査装置１００の各部を制御するように構成されている。処理部２１は、ＣＰＵ（中央処理装置）などのプロセッサ、メモリ、ＡＤ変換器などを含んでいる。受信Ｉ／Ｆ２２は、差動コイル１１の検知信号（差動信号）を受信（取得）して、処理部２１に送信する。受信Ｉ／Ｆ２２は、増幅器を含んでいる。受信Ｉ／Ｆ２２は、増幅器により差動コイル１２の検知信号を増幅して、処理部２１に送信する。励振Ｉ／Ｆ２３は、処理部２１からの制御信号を受信する。励振Ｉ／Ｆ２３は、受信した制御信号に基づいて、励振コイル１２に対する電力の供給を制御する。電源回路２４は、外部から電力を受け取って、励振コイル１２などのワイヤロープ検査装置１００の各部に電力を供給する。記憶部２５は、たとえばフラッシュメモリを含む記憶媒体であり、ワイヤロープＷの計測結果（計測データ）などの情報を記憶（保存）する。通信部２６は、通信用のインターフェースであり、ワイヤロープ検査装置１００と処理装置２００とを通信可能に接続する。 The electronic circuit unit 2 includes a processing unit 21, a receiving I / F (interface) 22, an excitation I / F 23, a power supply circuit 24, a storage unit 25, and a communication unit 26. The processing unit 21 is configured to control each unit of the wire rope inspection device 100. The processing unit 21 includes a processor such as a CPU (central processing unit), a memory, an AD converter, and the like. The reception I / F 22 receives (acquires) the detection signal (differential signal) of the differential coil 11 and transmits it to the processing unit 21. The receiving I / F 22 includes an amplifier. The receiving I / F 22 amplifies the detection signal of the differential coil 12 by an amplifier and transmits it to the processing unit 21. The excitation I / F 23 receives a control signal from the processing unit 21. The excitation I / F 23 controls the supply of electric power to the excitation coil 12 based on the received control signal. The power supply circuit 24 receives electric power from the outside and supplies electric power to each part of the wire rope inspection device 100 such as the excitation coil 12. The storage unit 25 is, for example, a storage medium including a flash memory, and stores (stores) information such as a measurement result (measurement data) of the wire rope W. The communication unit 26 is an interface for communication, and connects the wire rope inspection device 100 and the processing device 200 in a communicable manner.
　図３に示すように、筐体３は、開口部３１と、第１筐体部３２と、第２筐体部３３とを含んでいる。開口部３１は、その内部にワイヤロープＷが、筐体３をＺ方向に貫通するように設けられている。開口部３１は、各々の長手方向（Ｚ方向）に直交する方向（Ｘ方向）に並ぶように、互いに平行に配列された複数（８つ）のワイヤロープＷを配置可能に構成されている。エレベータ１１０（図１参照）には、複数（８つ）のワイヤロープＷが設けられている。開口部３１は、複数のワイヤロープＷの配列方向（Ｘ方向）に長手方向を有し、複数のワイヤロープＷの長手方向（Ｚ方向）および配列方向（Ｘ方向）に直交するＹ方向に短手方向を有するように形成されている。また、開口部３１は、複数のワイヤロープＷの数、複数のワイヤロープＷの間のＸ方向の間隔（ピッチ）、複数のワイヤロープＷの径などが異なる複数のワイヤロープＷを配置可能に構成されている。また、開口部３１は、複数のワイヤロープＷを非接触で配置可能に構成されている。 As shown in FIG. 3, the housing 3 includes an opening 31, a first housing portion 32, and a second housing portion 33. The opening 31 is provided with a wire rope W inside the opening 31 so as to penetrate the housing 3 in the Z direction. The opening 31 is configured so that a plurality of (eight) wire ropes W arranged in parallel with each other can be arranged so as to be arranged in a direction (X direction) orthogonal to each longitudinal direction (Z direction). The elevator 110 (see FIG. 1) is provided with a plurality of (eight) wire ropes W. The opening 31 has a longitudinal direction in the arrangement direction (X direction) of the plurality of wire ropes W, and is short in the Y direction orthogonal to the longitudinal direction (Z direction) and the arrangement direction (X direction) of the plurality of wire ropes W. It is formed to have a hand direction. Further, the opening 31 can arrange a plurality of wire ropes W having different numbers of the plurality of wire ropes W, the distance (pitch) in the X direction between the plurality of wire ropes W, the diameters of the plurality of wire ropes W, and the like. It is configured. Further, the opening 31 is configured so that a plurality of wire ropes W can be arranged in a non-contact manner.
　図４および図５に示すように、第１筐体部３２は、差動コイル１１の後述する第１受信コイル１１ａ（第１基板４１）、および、励振コイル１２の後述する第１コイル部１２ａ（第３基板６１）を収容するように構成されている。また、第１筐体部３２は、第２筐体部３３の後述する開口形成部３３ａと共に開口部３１を形成する凹状の開口形成部３２ａを有している。開口形成部３２ａは、第１筐体部３２と第２筐体部３３とが互いに閉鎖状態である場合（図４に示す場合）、開口形成部３３ａと共に開口部３１を形成するように構成されている。 As shown in FIGS. 4 and 5, the first housing portion 32 includes a first receiving coil 11a (first substrate 41) of the differential coil 11 described later, and a first coil portion 12a of the exciting coil 12 described later. It is configured to accommodate (third substrate 61). Further, the first housing portion 32 has a concave opening forming portion 32a that forms the opening portion 31 together with the opening forming portion 33a of the second housing portion 33, which will be described later. The opening forming portion 32a is configured to form the opening 31 together with the opening forming portion 33a when the first housing portion 32 and the second housing portion 33 are closed to each other (when shown in FIG. 4). ing.
　第２筐体部３３は、差動コイル１１の後述する第２受信コイル１１ｂ（第２基板４２）、および、励振コイル１２の後述する第２コイル部１２ｂ（第４基板６２）を収容するように構成されている。また、第２筐体部３３は、第１筐体部３２の開口形成部３２ａと共に開口部３１を形成する凹状の開口形成部３３ａを有している。開口形成部３３ａは、筐体３が閉じた状態である場合（図４に示す場合）、開口形成部３２ａと共に開口部３１を形成するように構成されている。 The second housing portion 33 accommodates the second receiving coil 11b (second substrate 42) of the differential coil 11, which will be described later, and the second coil portion 12b (fourth substrate 62) of the excitation coil 12, which will be described later. It is configured in. Further, the second housing portion 33 has a concave opening forming portion 33a that forms the opening portion 31 together with the opening forming portion 32a of the first housing portion 32. The opening forming portion 33a is configured to form the opening 31 together with the opening forming portion 32a when the housing 3 is in the closed state (in the case shown in FIG. 4).
　また、本例では、第１筐体部３２に収容された第１基板４１と第３基板６１とは、複数のワイヤロープＷに対して一方側（Ｙ１方向側）において、複数のワイヤロープＷが延びる方向（Ｚ方向）に互いにオーバーラップするように設けられている。すなわち、第１基板４１と第３基板６１とは、Ｙ方向から見て、互いにオーバーラップするように設けられている。同様に、本例では、第２筐体部３３に収容された第２基板４２と第４基板６２とは、複数のワイヤロープＷに対して他方側（Ｙ２方向側）において、複数のワイヤロープＷが延びる方向に互いにオーバーラップするように設けられている。すなわち、第２基板４２と第４基板６２とは、Ｙ方向から見て、互いにオーバーラップするように設けられている。 Further, in this example, the first substrate 41 and the third substrate 61 housed in the first housing portion 32 have a plurality of wire ropes W on one side (Y1 direction side) with respect to the plurality of wire ropes W. Are provided so as to overlap each other in the extending direction (Z direction). That is, the first substrate 41 and the third substrate 61 are provided so as to overlap each other when viewed from the Y direction. Similarly, in this example, the second substrate 42 and the fourth substrate 62 housed in the second housing portion 33 have a plurality of wire ropes on the other side (Y2 direction side) with respect to the plurality of wire ropes W. It is provided so as to overlap each other in the direction in which W extends. That is, the second substrate 42 and the fourth substrate 62 are provided so as to overlap each other when viewed from the Y direction.
　また、本実施形態では、第１筐体部３２および第２筐体部３３は、互いに分割可能に接続されている。これにより、筐体３は、第１筐体部３２および第２筐体部３３が互いに接続された閉じた状態（図４に示す状態）と、第１筐体部３２および第２筐体部３３が互いに分割された開いた状態（図５に示す状態）とを切替可能に構成されている。ワイヤロープ検査装置１００は、筐体３が開いた状態で、複数のワイヤロープＷが開口部３１に配置されるように構成されている。また、ワイヤロープ検査装置１００は、筐体３が閉じた状態で、複数のワイヤロープＷに対する検査を行うように構成されている。また、本実施形態では、筐体３は、開いた状態において、第１筐体部３２の全体および第２筐体部３３の全体を互いに切り離す（完全に離間させる）ことが可能なように構成されている。また、筐体３は、閉じた状態において、第１筐体部３２および第２筐体部３３がねじなどの固定具（図示せず）により互いに固定されるように構成されている。 Further, in the present embodiment, the first housing portion 32 and the second housing portion 33 are connected to each other in a divisible manner. As a result, the housing 3 is in a closed state (state shown in FIG. 4) in which the first housing portion 32 and the second housing portion 33 are connected to each other, and the first housing portion 32 and the second housing portion 32. The 33 is configured to be switchable between an open state (state shown in FIG. 5) divided into each other. The wire rope inspection device 100 is configured such that a plurality of wire ropes W are arranged in the opening 31 with the housing 3 open. Further, the wire rope inspection device 100 is configured to inspect a plurality of wire ropes W with the housing 3 closed. Further, in the present embodiment, the housing 3 is configured so that the entire first housing portion 32 and the entire second housing portion 33 can be separated from each other (completely separated from each other) in the open state. Has been done. Further, the housing 3 is configured such that the first housing portion 32 and the second housing portion 33 are fixed to each other by a fixing tool (not shown) such as a screw in a closed state.
　また、図５に示すように、第１筐体部３２および第２筐体部３３には、それぞれ、複数（２つ）のコネクタ部３２ｂおよび３３ｂが設けられている。コネクタ部３２ｂおよび３３ｂは、第１筐体部３２および第２筐体部３３が互いに接続された状態（筐体３が閉じた状態）で、互いに接続されるように構成されている。また、コネクタ部３２ｂおよび３３ｂは、互いに接続された状態で、差動コイル１１の第１受信コイル１１ａおよび第２受信コイル１１ｂ、並びに、励振コイル１２の第１コイル部１２ａおよび第２コイル部１２ｂを電気的に接続するように構成されている。 Further, as shown in FIG. 5, a plurality of (two) connector portions 32b and 33b are provided in the first housing portion 32 and the second housing portion 33, respectively. The connector portions 32b and 33b are configured to be connected to each other in a state where the first housing portion 32 and the second housing portion 33 are connected to each other (the housing 3 is closed). Further, the connector portions 32b and 33b are connected to each other, and the first receiving coil 11a and the second receiving coil 11b of the differential coil 11 and the first coil portion 12a and the second coil portion 12b of the exciting coil 12 are connected to each other. Is configured to be electrically connected.
（差動コイルに関する構成）
　図２、図４および図５に示すように、差動コイル１１は、差動接続された平面コイルである第１受信コイル１１ａと平面コイルである第２受信コイル１１ｂとを有している。 (Configuration related to differential coil)
As shown in FIGS. 2, 4 and 5, the differential coil 11 has a first receiving coil 11a which is a differentially connected planar coil and a second receiving coil 11b which is a planar coil.
　ここで、本実施形態では、図６および図７に示すように、第１受信コイル１１ａおよび第２受信コイル１１ｂは、複数のワイヤロープＷを挟むように、互いの検知面同士が対向するように配置されていることにより、複数のワイヤロープＷの磁束を共通に検知するように構成されている。すなわち、差動コイル１１（第１受信コイル１１ａ、第２受信コイル１１ｂ）は、複数のワイヤロープＷに対して共通に設けられ、複数のワイヤロープＷの磁束を共通に検知するように構成されている。差動コイル１１は、複数のワイヤロープＷに対して１つ設けられている。そして、１つの差動コイル１１によって、複数のワイヤロープＷの磁束がまとめて検知される。 Here, in the present embodiment, as shown in FIGS. 6 and 7, the first receiving coil 11a and the second receiving coil 11b have their detection surfaces facing each other so as to sandwich the plurality of wire ropes W. By being arranged in, it is configured to detect the magnetic fluxes of a plurality of wire ropes W in common. That is, the differential coil 11 (first receiving coil 11a, second receiving coil 11b) is provided in common for the plurality of wire ropes W, and is configured to commonly detect the magnetic flux of the plurality of wire ropes W. ing. One differential coil 11 is provided for each of the plurality of wire ropes W. Then, the magnetic fluxes of the plurality of wire ropes W are collectively detected by one differential coil 11.
　複数のワイヤロープＷの磁束を検知する際には、複数のワイヤロープＷは、第１受信コイル１１ａと第２受信コイル１１ｂとの間に非接触の状態で配置される。差動コイル１１は、第１受信コイル１１ａにより得られた信号と第２受信コイル１１ｂにより得られた信号との差動信号を検知信号として出力するように構成されている。 When detecting the magnetic flux of the plurality of wire ropes W, the plurality of wire ropes W are arranged in a non-contact state between the first receiving coil 11a and the second receiving coil 11b. The differential coil 11 is configured to output a differential signal between the signal obtained by the first receiving coil 11a and the signal obtained by the second receiving coil 11b as a detection signal.
　第１受信コイル１１ａは、平板状の第１基板（プリント基板）４１に設けられたコイルである。具体的には、第１受信コイル１１ａは、平板状の第１基板４１の基板面内において巻き回された渦巻き状の導線からなる。同様に、第２受信コイル１１ｂは、平板状の第２基板（プリント基板）４２に設けられたコイルである。具体的には、第２受信コイル１１ｂは、平板状の第２基板４２の基板面内において巻き回された渦巻き状の導線からなる。また、第１受信コイル１１ａと第２受信コイル１１ｂとは、それぞれの検知面が互いに略平行となるように配置されている。なお、第１受信コイル１１ａおよび第２受信コイル１１ｂの検知面とは、コイルを巻き回す面のことであり、平板状の第１基板４１および平板状の第２基板４２の基板表面（または基板裏面）と略平行の面である。 The first receiving coil 11a is a coil provided on a flat plate-shaped first substrate (printed circuit board) 41. Specifically, the first receiving coil 11a is composed of a spiral conducting wire wound around the substrate surface of the flat plate-shaped first substrate 41. Similarly, the second receiving coil 11b is a coil provided on the flat plate-shaped second substrate (printed circuit board) 42. Specifically, the second receiving coil 11b is composed of a spiral conducting wire wound in the substrate surface of the flat plate-shaped second substrate 42. Further, the first receiving coil 11a and the second receiving coil 11b are arranged so that their respective detection surfaces are substantially parallel to each other. The detection surfaces of the first receiving coil 11a and the second receiving coil 11b are surfaces around which the coils are wound, and are the substrate surfaces (or substrates) of the flat plate-shaped first substrate 41 and the flat plate-shaped second substrate 42. The surface is almost parallel to the back surface).
　第１受信コイル１１ａは、Ｙ方向から見て、矩形状に形成されている。具体的には、第１受信コイル１１ａは、Ｘ方向に長手方向を有し、Ｚ方向に短手方向を有する矩形状に形成されている。また、第１受信コイル１１ａは、Ｘ方向に幅Ｗ１を有し、Ｚ方向に幅Ｗ２を有している。幅Ｗ１は、たとえば、第１受信コイル１１ａのＸ方向の一方側の端部から他方側の端部までの幅である。幅Ｗ２は、たとえば、第１受信コイル１１ａのＺ方向の一方側の端部から他方側の端部までの幅である。第１受信コイル１１ａは、Ｘ方向に延びる複数の導線部分１１１と、Ｚ方向に延びる複数の導線部分１１２とを有しており、複数のワイヤロープＷが延びる方向に直交するＸ方向の幅Ｗ１は、複数のワイヤロープＷが延びるＺ方向の幅Ｗ２よりも大きい。 The first receiving coil 11a is formed in a rectangular shape when viewed from the Y direction. Specifically, the first receiving coil 11a is formed in a rectangular shape having a longitudinal direction in the X direction and a lateral direction in the Z direction. Further, the first receiving coil 11a has a width W1 in the X direction and a width W2 in the Z direction. The width W1 is, for example, the width from one end of the first receiving coil 11a in the X direction to the other end. The width W2 is, for example, the width from one end of the first receiving coil 11a in the Z direction to the other end. The first receiving coil 11a has a plurality of conductor portions 111 extending in the X direction and a plurality of conductor portions 112 extending in the Z direction, and has a width W1 in the X direction orthogonal to the direction in which the plurality of wire ropes W extend. Is larger than the width W2 in the Z direction in which the plurality of wire ropes W extend.
　第２受信コイル１１ｂは、第１受信コイル１１ａに対応する形状を有している。すなわち、第２受信コイル１１ｂは、Ｙ方向から見て、略矩形状に形成されている。具体的には、第２受信コイル１１ｂは、Ｘ方向に長手方向を有し、Ｚ方向に短手方向を有する矩形状に形成されている。また、第２受信コイル１１ｂは、Ｘ方向に幅Ｗ３を有し、Ｚ方向に幅Ｗ４を有している。幅Ｗ３は、たとえば、第２受信コイル１１ｂのＸ方向の一方側の端部から他方側の端部までの幅である。幅Ｗ４は、たとえば、第２受信コイル１１ｂのＺ方向の一方側の端部から他方側の端部までの幅である。第２受信コイル１１ｂは、Ｘ方向に延びる複数の導線部分１１３と、Ｚ方向に延びる複数の導線部分１１４とを有しており、複数のワイヤロープＷが延びる方向に直交するＸ方向の幅Ｗ３は、複数のワイヤロープＷが延びるＺ方向の幅Ｗ４よりも大きい。なお、幅Ｗ３は、幅Ｗ１と同じ大きさを有しており、幅Ｗ４は、幅Ｗ２と同じ大きさを有している。 The second receiving coil 11b has a shape corresponding to the first receiving coil 11a. That is, the second receiving coil 11b is formed in a substantially rectangular shape when viewed from the Y direction. Specifically, the second receiving coil 11b is formed in a rectangular shape having a longitudinal direction in the X direction and a lateral direction in the Z direction. Further, the second receiving coil 11b has a width W3 in the X direction and a width W4 in the Z direction. The width W3 is, for example, the width from one end of the second receiving coil 11b in the X direction to the other end. The width W4 is, for example, the width from one end of the second receiving coil 11b in the Z direction to the other end. The second receiving coil 11b has a plurality of conducting wire portions 113 extending in the X direction and a plurality of conducting wire portions 114 extending in the Z direction, and has a width W3 in the X direction orthogonal to the direction in which the plurality of wire ropes W extend. Is larger than the width W4 in the Z direction in which the plurality of wire ropes W extend. The width W3 has the same size as the width W1, and the width W4 has the same size as the width W2.
　本実施形態では、第１受信コイル１１ａおよび第２受信コイル１１ｂは、複数のワイヤロープＷの配列方向（Ｘ方向）において、複数のワイヤロープＷの一方端のワイヤロープＷから他方端のワイヤロープＷの間の距離Ｄ（図６参照）よりも大きい幅Ｗ１およびＷ３を有している。これにより、第１受信コイル１１ａおよび第２受信コイル１１ｂは、Ｙ方向から見て、複数のワイヤロープＷの一方端のワイヤロープＷから他方端のワイヤロープＷに亘ってオーバーラップするように構成されている。第１受信コイル１１ａおよび第２受信コイル１１ｂは、たとえば、複数のワイヤロープＷの一方端のワイヤロープＷおよび他方端のワイヤロープＷの距離Ｄよりも、ワイヤロープＷ１本分以上外側まで延びるように設けられている。 In the present embodiment, the first receiving coil 11a and the second receiving coil 11b are arranged from one end of the plurality of wire ropes W to the other end of the wire ropes W in the arrangement direction (X direction) of the plurality of wire ropes W. It has widths W1 and W3 that are greater than the distance D between W (see FIG. 6). As a result, the first receiving coil 11a and the second receiving coil 11b are configured to overlap from the wire rope W at one end of the plurality of wire ropes W to the wire rope W at the other end when viewed from the Y direction. Has been done. The first receiving coil 11a and the second receiving coil 11b extend to the outside by one or more wire ropes W than the distance D between the wire ropes W at one end and the wire ropes W at the other ends, for example. It is provided in.
　図８に示すように、第１受信コイル１１ａの端部と、第２受信コイル１１ｂの端部とは、互いに差動接続されている。具体的には、第１受信コイル１１ａの内側の端部と、第２受信コイル１１ｂの内側の端部とは、互いに差動接続されている。これにより、第１受信コイル１１ａと第２受信コイル１１ｂとは、互いに逆方向に電流が流れるように構成されている。 As shown in FIG. 8, the end of the first receiving coil 11a and the end of the second receiving coil 11b are differentially connected to each other. Specifically, the inner end of the first receiving coil 11a and the inner end of the second receiving coil 11b are differentially connected to each other. As a result, the first receiving coil 11a and the second receiving coil 11b are configured so that currents flow in opposite directions to each other.
　また、図６に示すように、ワイヤロープ検査装置１００は、複数のワイヤロープＷに対して予め磁界を印加することにより、複数のワイヤロープＷの磁化の大きさと向きとを整える磁界印加部（整磁部）５０を備えている。具体的には、磁界印加部５０は、複数のワイヤロープＷに対して共通に設けられ、複数のワイヤロープＷに対して共通に磁界を印加するように構成されている。磁界印加部５０は、複数のワイヤロープＷに対して１つ設けられている。そして、１つの磁界印加部５０によって、複数のワイヤロープＷに対して磁界がまとめて印加される。 Further, as shown in FIG. 6, the wire rope inspection device 100 applies a magnetic field to the plurality of wire ropes W in advance to adjust the magnitude and direction of the magnetization of the plurality of wire ropes W. Alignment unit) 50 is provided. Specifically, the magnetic field application unit 50 is provided in common for a plurality of wire ropes W, and is configured to apply a magnetic field in common to the plurality of wire ropes W. One magnetic field application unit 50 is provided for each of the plurality of wire ropes W. Then, a magnetic field is collectively applied to the plurality of wire ropes W by one magnetic field application unit 50.
　また、磁界印加部５０は、差動コイル１１からワイヤロープＷが延びる方向（Ｚ１方向）に離間した位置に設けられている。差動コイル１１は、磁界印加部５０により予め磁界が印加されたワイヤロープＷの磁界の変化を検知する。具体的には、磁界印加部５０は、励振コイル１２がワイヤロープＷに磁界を印加するよりも前に、ワイヤロープＷに磁界を印加することが可能なように、励振コイル１２からＺ１方向に離間した位置に設けられている。 Further, the magnetic field application unit 50 is provided at a position separated from the differential coil 11 in the direction in which the wire rope W extends (Z1 direction). The differential coil 11 detects a change in the magnetic field of the wire rope W to which the magnetic field has been applied in advance by the magnetic field application unit 50. Specifically, the magnetic field application unit 50 is directed from the excitation coil 12 in the Z1 direction so that the magnetic field can be applied to the wire rope W before the excitation coil 12 applies the magnetic field to the wire rope W. It is provided at a separated position.
　図９に示すように、磁界印加部５０は、整磁用の磁石５１と、整磁用の磁石５２とを含んでいる。磁石５１と磁石５２とは、永久磁石により構成されている。また、磁石５１と磁石５２とは、複数のワイヤロープＷを挟んでＹ方向に互いに対向するように配置されている。具体的には、磁石５１は、複数のワイヤロープＷに対してＹ１方向側に設けられており、Ｙ１方向側から複数のワイヤロープＷに対して整磁用の磁界を印加するように構成されている。また、磁石５２は、複数のワイヤロープＷに対してＹ２方向側に設けられており、Ｙ２方向側から複数のワイヤロープＷに対して整磁用の磁界を印加するように構成されている。また、磁石５１と磁石５２とは、複数のワイヤロープＷに対してＹ方向に互いに等距離の位置に配置されている。すなわち、Ｙ方向において、磁石５１とワイヤロープＷとの間の距離は、磁石５２とワイヤロープＷとの間の距離と等しい。 As shown in FIG. 9, the magnetic field application unit 50 includes a magnet 51 for magnetizing and a magnet 52 for magnetizing. The magnet 51 and the magnet 52 are composed of permanent magnets. Further, the magnet 51 and the magnet 52 are arranged so as to face each other in the Y direction with a plurality of wire ropes W interposed therebetween. Specifically, the magnet 51 is provided on the Y1 direction side with respect to the plurality of wire ropes W, and is configured to apply a magnetic field for magnetism to the plurality of wire ropes W from the Y1 direction side. ing. Further, the magnet 52 is provided on the Y2 direction side with respect to the plurality of wire ropes W, and is configured to apply a magnetic field for magnetism to the plurality of wire ropes W from the Y2 direction side. Further, the magnet 51 and the magnet 52 are arranged at positions equidistant from each other in the Y direction with respect to the plurality of wire ropes W. That is, in the Y direction, the distance between the magnet 51 and the wire rope W is equal to the distance between the magnet 52 and the wire rope W.
　また、磁石５１と磁石５２とは、複数のワイヤロープＷを挟んで同極同士（図９では、Ｎ極同士）が対向するように配置されている。なお、図９では、理解の容易化のために、磁石５１と磁石５２とのＮ極をハッチングを付して図示し、磁石５１と磁石５２とのＳ極をハッチングを付さずに白抜きで図示している。また、磁石５１と磁石５２とは、Ｎ極とＳ極とがＹ方向に沿って並ぶ縦向きに配置されている。なお、磁石５１と磁石５２とは、複数のワイヤロープＷを挟んでＳ極同士が対向するように配置されていてもよいし、異極同士（Ｎ極とＳ極と）が対向するように配置されていてもよい。また、磁石５１と磁石５２とは、Ｎ極とＳ極とがＺ方向に沿って並ぶ横向きに配置されていてもよいし、Ｎ極とＳ極とがＺ方向に対して傾斜した方向に沿って並ぶ斜め向きに配置されていてもよい。 Further, the magnet 51 and the magnet 52 are arranged so that the same poles (the north poles in FIG. 9) face each other with the plurality of wire ropes W interposed therebetween. In FIG. 9, for ease of understanding, the north pole of the magnet 51 and the magnet 52 is shown with hatching, and the south pole of the magnet 51 and the magnet 52 is outlined without hatching. It is illustrated in. Further, the magnet 51 and the magnet 52 are arranged in a vertical direction in which the north pole and the south pole are arranged along the Y direction. The magnet 51 and the magnet 52 may be arranged so that the S poles face each other with the plurality of wire ropes W interposed therebetween, or the different poles (the N pole and the S pole) face each other. It may be arranged. Further, the magnet 51 and the magnet 52 may be arranged side by side in which the north pole and the south pole are arranged along the Z direction, or the north pole and the south pole are arranged in a direction inclined with respect to the Z direction. They may be arranged diagonally side by side.
（励振コイルに関する構成）
　本実施形態では、図１０および図１１に示すように、励振コイル１２は、複数のワイヤロープＷに磁束を共通に印加するように構成されている。すなわち、励振コイル１２は、複数のワイヤロープＷの磁化の状態を共通に励振するように構成されている。励振コイル１２は、複数のワイヤロープＷに対して共通に設けられている。すなわち、励振コイル１２は、複数のワイヤロープＷに対して１つ設けられている。そして、１つの励振コイル１２によって、複数のワイヤロープＷにまとめて磁束が印加される。 (Structure related to excitation coil)
In the present embodiment, as shown in FIGS. 10 and 11, the excitation coil 12 is configured to commonly apply magnetic flux to a plurality of wire ropes W. That is, the excitation coil 12 is configured to commonly excite the magnetized state of the plurality of wire ropes W. The excitation coil 12 is commonly provided for the plurality of wire ropes W. That is, one excitation coil 12 is provided for each of the plurality of wire ropes W. Then, the magnetic flux is collectively applied to the plurality of wire ropes W by one exciting coil 12.
　励振コイル１２は、第１コイル部１２ａと、第２コイル部１２ｂとを有している。第１コイル部１２ａおよび第２コイル部１２ｂは、複数のワイヤロープＷを挟んで、互いに対向するように設けられている。また、第１コイル部１２ａおよび第２コイル部１２ｂは、コネクタ部３２ｂおよび３３ｂ（図５参照）を介して、電気的に互いに接続されるように構成されている。励振コイル１２は、第１コイル部１２ａおよび第２コイル部１２ｂに電流が流れることにより、複数のワイヤロープＷ周りを周回するように（渦を巻くように）電流が流れるように構成されている。なお、第１コイル部１２ａおよび第２コイル部１２ｂは、それぞれ、請求の範囲の「第１励磁部」および「第２励磁部」の一例である。 The excitation coil 12 has a first coil portion 12a and a second coil portion 12b. The first coil portion 12a and the second coil portion 12b are provided so as to face each other with a plurality of wire ropes W interposed therebetween. Further, the first coil portion 12a and the second coil portion 12b are configured to be electrically connected to each other via the connector portions 32b and 33b (see FIG. 5). The excitation coil 12 is configured so that a current flows through the first coil portion 12a and the second coil portion 12b so that the current flows around the plurality of wire ropes W (in a swirling manner). .. The first coil portion 12a and the second coil portion 12b are examples of the "first exciting portion" and the "second exciting portion" in the claims, respectively.
　第１コイル部１２ａは、平板状の第３基板（プリント基板）６１に設けられている。第１コイル部１２ａは、複数の端子部１２１と、互いに対応する２つの端子部１２１間を電気的に接続する複数の導線部１２２とを有している。複数の端子部１２１は、コネクタ部３２ｂおよび３３ｂを介して、第２コイル部１２ｂの後述する複数の端子部１２３と電気的に接続されるように構成されている。複数の導線部１２２は、Ｘ方向に対して傾斜する方向に延びるように設けられている。 The first coil portion 12a is provided on a flat plate-shaped third substrate (printed circuit board) 61. The first coil portion 12a has a plurality of terminal portions 121 and a plurality of conducting wire portions 122 that electrically connect the two terminal portions 121 corresponding to each other. The plurality of terminal portions 121 are configured to be electrically connected to the plurality of terminal portions 123 described later of the second coil portion 12b via the connector portions 32b and 33b. The plurality of conducting wire portions 122 are provided so as to extend in a direction inclined with respect to the X direction.
　第２コイル部１２ｂは、平板状の第４基板（プリント基板）６２に設けられている。第２コイル部１２ｂは、複数の端子部１２３と、互いに対応する２つの端子部１２３間を電気的に接続する複数の導線部１２４とを有している。複数の端子部１２３は、コネクタ部３２ｂおよび３３ｂを介して、第１コイル部１２ａの複数の端子部１２１と電気的に接続されるように構成されている。複数の導線部１２４は、Ｘ方向に延びるように設けられている。励振コイル１２は、第１コイル部１２ａおよび第２コイル部１２ｂの各端子部１２１および１２３と、各導線部１２２および１２４とに接続順に電流が流れることにより、複数のワイヤロープＷ周りを複数回周回する電流が流れるように構成されている。 The second coil portion 12b is provided on a flat plate-shaped fourth substrate (printed circuit board) 62. The second coil portion 12b has a plurality of terminal portions 123 and a plurality of conducting wire portions 124 that electrically connect the two terminal portions 123 corresponding to each other. The plurality of terminal portions 123 are configured to be electrically connected to the plurality of terminal portions 121 of the first coil portion 12a via the connector portions 32b and 33b. The plurality of conducting wire portions 124 are provided so as to extend in the X direction. The exciting coil 12 travels around the plurality of wire ropes W a plurality of times by flowing a current through the terminal portions 121 and 123 of the first coil portion 12a and the second coil portion 12b and the conducting wire portions 122 and 124 in the order of connection. It is configured so that an orbiting current flows.
　また、励振コイル１２の第１コイル部１２ａ（第３基板６１）は、差動コイル１１の第１受信コイル１１ａ（第１基板４１）に対して外側（Ｙ１方向側）に設けられている。また、励振コイル１２の第２コイル部１２ｂ（第４基板６２）は、差動コイル１１の第２受信コイル１１ｂ（第２基板４２）に対して外側（Ｙ２方向側）に設けられている。すなわち、差動コイル１１は、励振コイル１２の内側（コイルの輪の内側）に配置されている。なお、差動コイル１１は、励振コイル１２の外側（コイルの輪の外側）に配置されていてもよい。 Further, the first coil portion 12a (third substrate 61) of the excitation coil 12 is provided on the outside (Y1 direction side) with respect to the first receiving coil 11a (first substrate 41) of the differential coil 11. Further, the second coil portion 12b (fourth substrate 62) of the excitation coil 12 is provided on the outside (Y2 direction side) with respect to the second receiving coil 11b (second substrate 42) of the differential coil 11. That is, the differential coil 11 is arranged inside the excitation coil 12 (inside the ring of the coil). The differential coil 11 may be arranged outside the excitation coil 12 (outside the ring of the coil).
（本実施形態の効果）
　本実施形態では、以下のような効果を得ることができる。 (Effect of this embodiment)
In this embodiment, the following effects can be obtained.
　本実施形態では、上記のように、第１受信コイル１１ａおよび第２受信コイル１１ｂを、複数のワイヤロープＷを挟むように、互いの検知面同士が対向するように配置されていることにより、複数のワイヤロープＷの磁束を共通に検知するように構成する。これにより、複数のワイヤロープＷに対して第１受信コイル１１ａおよび第２受信コイル１１ｂ（差動コイル１１）を共通化することができるので、複数のワイヤロープＷの各々に対して差動コイル１１を設ける場合に比べて、ワイヤロープ検査装置１００の構造を簡素化することができる。また、１組の第１受信コイル１１ａおよび第２受信コイル１１ｂにより、複数のワイヤロープＷの磁束を共通に検知することができるので、複数のワイヤロープＷの数、複数のワイヤロープＷの間の間隔（ピッチ）、複数のワイヤロープＷの径などの複数のワイヤロープＷに関する計測条件が異なる場合にも、ワイヤロープ検査装置１００を互いに異なる計測条件に対して共通に利用することができる。これらの結果、ワイヤロープ検査装置１００の構造を簡素化しつつ、複数のワイヤロープＷの数、複数のワイヤロープＷの間の間隔（ピッチ）、複数のワイヤロープＷの径などの複数のワイヤロープＷに関する計測条件が異なる場合にも、ワイヤロープ検査装置１００を互いに異なる計測条件に対して共通に利用することができる。 In the present embodiment, as described above, the first receiving coil 11a and the second receiving coil 11b are arranged so that their detection surfaces face each other so as to sandwich the plurality of wire ropes W. It is configured to detect the magnetic fluxes of a plurality of wire ropes W in common. As a result, the first receiving coil 11a and the second receiving coil 11b (differential coil 11) can be shared for the plurality of wire ropes W, so that the differential coil for each of the plurality of wire ropes W can be shared. Compared with the case where 11 is provided, the structure of the wire rope inspection device 100 can be simplified. Further, since the magnetic flux of the plurality of wire ropes W can be detected in common by the pair of the first receiving coil 11a and the second receiving coil 11b, the number of the plurality of wire ropes W and the number of the plurality of wire ropes W are among the plurality of wire ropes W. Even when the measurement conditions relating to the plurality of wire ropes W such as the interval (pitch) and the diameters of the plurality of wire ropes W are different, the wire rope inspection device 100 can be commonly used for different measurement conditions. As a result, while simplifying the structure of the wire rope inspection device 100, a plurality of wire ropes such as the number of a plurality of wire ropes W, the spacing (pitch) between the plurality of wire ropes W, and the diameters of the plurality of wire ropes W are obtained. Even when the measurement conditions related to W are different, the wire rope inspection device 100 can be commonly used for different measurement conditions.
　また、本実施形態では、上記のように、第１受信コイル１１ａおよび第２受信コイル１１ｂを、複数のワイヤロープＷの配列方向において、複数のワイヤロープＷの一方端のワイヤロープＷから他方端のワイヤロープＷの間の距離Ｄよりも大きい幅Ｗ１およびＷ３を有するように構成する。これにより、第１受信コイル１１ａおよび第２受信コイル１１ｂを複数のワイヤロープＷの配列方向において複数のワイヤロープＷの全体に亘って複数のワイヤロープＷと対向させることができる。その結果、複数のワイヤロープＷに対して第１受信コイル１１ａおよび第２受信コイル１１ｂ（差動コイル）を共通化した場合にも、複数のワイヤロープＷの磁束を容易かつ確実に検知することができる。 Further, in the present embodiment, as described above, the first receiving coil 11a and the second receiving coil 11b are arranged from one end of the plurality of wire ropes W to the other end in the arrangement direction of the plurality of wire ropes W. It is configured to have widths W1 and W3 that are greater than the distance D between the wire ropes W. As a result, the first receiving coil 11a and the second receiving coil 11b can be made to face the plurality of wire ropes W over the entire plurality of wire ropes W in the arrangement direction of the plurality of wire ropes W. As a result, even when the first receiving coil 11a and the second receiving coil 11b (differential coil) are shared for the plurality of wire ropes W, the magnetic fluxes of the plurality of wire ropes W can be easily and surely detected. Can be done.
　また、本実施形態では、上記のように、ワイヤロープ検査装置１００を、第１受信コイル１１ａが設けられた平板状の第１基板４１と、第２受信コイル１１ｂが設けられた平板状の第２基板４２と、を備えるように構成する。これにより、第１受信コイル１１ａが設けられた第１基板４１と、第２受信コイル１１ｂが設けられた第２基板４２とが互いに独立して設けられているので、第１受信コイル１１ａおよび第２受信コイル１１ｂを複数のワイヤロープＷを挟むように容易に配置することができる。また、本実施形態のように、筐体３が分割構造を有する場合、第１基板４１と第２基板４２とが互いに独立して設けられていることにより、筐体３を容易に分割することができる。 Further, in the present embodiment, as described above, the wire rope inspection device 100 is provided with the flat plate-shaped first substrate 41 provided with the first receiving coil 11a and the flat plate-shaped first substrate 41 provided with the second receiving coil 11b. It is configured to include two substrates 42. As a result, the first substrate 41 provided with the first receiving coil 11a and the second substrate 42 provided with the second receiving coil 11b are provided independently of each other, so that the first receiving coil 11a and the first The two receiving coils 11b can be easily arranged so as to sandwich the plurality of wire ropes W. Further, when the housing 3 has a divided structure as in the present embodiment, the housing 3 can be easily divided because the first substrate 41 and the second substrate 42 are provided independently of each other. Can be done.
　また、本実施形態では、上記のように、ワイヤロープ検査装置１００を、複数のワイヤロープＷに磁束を共通に印加する励振コイル１２（励磁部）を備えるように構成する。これにより、複数のワイヤロープＷに対して励振コイル１２を共通化することができるので、複数のワイヤロープＷの各々に対して励振コイル１２を設ける場合に比べて、ワイヤロープ検査装置１００の構造を簡素化することができる。 Further, in the present embodiment, as described above, the wire rope inspection device 100 is configured to include an exciting coil 12 (excited portion) that commonly applies magnetic flux to a plurality of wire ropes W. As a result, the excitation coil 12 can be shared for the plurality of wire ropes W, so that the structure of the wire rope inspection device 100 is as compared with the case where the excitation coil 12 is provided for each of the plurality of wire ropes W. Can be simplified.
　また、本実施形態では、上記のように、励振コイル１２（励磁部）を、第１コイル部１２ａ（第１励磁部）と、複数のワイヤロープＷを挟むように第１コイル部１２ａと対向するように設けられた第２コイル部１２ｂ（第２励磁部）とを含むように構成する。これにより、第１コイル部１２ａと、複数のワイヤロープＷを挟むように第１コイル部１２ａと対向するように設けられた第２コイル部１２ｂとにより、複数のワイヤロープＷに磁束を容易に共通に印加することができる。 Further, in the present embodiment, as described above, the exciting coil 12 (excited portion) faces the first coil portion 12a (first excited portion) and the first coil portion 12a so as to sandwich the plurality of wire ropes W. It is configured to include a second coil portion 12b (second exciting portion) provided so as to be provided. As a result, the first coil portion 12a and the second coil portion 12b provided so as to face the first coil portion 12a so as to sandwich the plurality of wire ropes W can easily apply magnetic flux to the plurality of wire ropes W. It can be applied in common.
　また、本実施形態では、上記のように、励振コイル１２（励磁部）を、第１コイル部１２ａと、第２コイル部１２ｂとを有し、複数のワイヤロープＷの磁化の状態を共通に励振するように構成する。また、ワイヤロープ検査装置１００を、第１コイル部１２ａが設けられた平板状の第３基板６１と、第２コイル部１２ｂが設けられた平板状の第４基板６２と、を備えるように構成する。これにより、第１コイル部１２ａが設けられた第３基板６１と、第２コイル部１２ｂが設けられた第４基板６２とが互いに独立して設けられているので、第１コイル部１２ａおよび第２コイル部１２ｂを複数のワイヤロープＷを挟むように容易に配置することができる。また、第１コイル部１２ａおよび第２コイル部１２ｂ（励振コイル１２）を複数のワイヤロープＷを挟むように配置することができるので、励振コイル１２を複数のワイヤロープＷの周囲を巻き回すように設ける場合に比べて、ワイヤロープ検査装置１００の構造を簡素化することができる。また、本実施形態のように、筐体３が分割構造を有する場合、第３基板６１と第４基板６２とが互いに独立して設けられていることにより、筐体３を容易に分割することができる。 Further, in the present embodiment, as described above, the exciting coil 12 (excited portion) has the first coil portion 12a and the second coil portion 12b, and the magnetized states of the plurality of wire ropes W are common. Configure to excite. Further, the wire rope inspection device 100 is configured to include a flat plate-shaped third substrate 61 provided with the first coil portion 12a and a flat plate-shaped fourth substrate 62 provided with the second coil portion 12b. do. As a result, the third substrate 61 provided with the first coil portion 12a and the fourth substrate 62 provided with the second coil portion 12b are provided independently of each other, so that the first coil portion 12a and the first coil portion 12a are provided. The two coil portions 12b can be easily arranged so as to sandwich the plurality of wire ropes W. Further, since the first coil portion 12a and the second coil portion 12b (excitation coil 12) can be arranged so as to sandwich the plurality of wire ropes W, the excitation coil 12 is wound around the plurality of wire ropes W. The structure of the wire rope inspection device 100 can be simplified as compared with the case where the wire rope inspection device 100 is provided. Further, when the housing 3 has a divided structure as in the present embodiment, the housing 3 can be easily divided because the third substrate 61 and the fourth substrate 62 are provided independently of each other. Can be done.
　また、本実施形態では、上記のように、第１基板４１と第３基板６１とを、複数のワイヤロープＷに対して一方側において、複数のワイヤロープＷが延びる方向に互いにオーバーラップするように設ける。また、第２基板４２と第４基板６２とを、複数のワイヤロープＷに対して他方側において、複数のワイヤロープＷが延びる方向に互いにオーバーラップするように設ける。これにより、第１基板４１と第３基板６１とを複数のワイヤロープＷが延びる方向に互いにオーバーラップさせない場合に比べて、第１基板４１と第３基板６１とを複数のワイヤロープＷが延びる方向に互いにオーバーラップさせた分だけ、ワイヤロープ検査装置１００を複数のワイヤロープＷが延びる方向に小型化することができる。また、第２基板４２と第４基板６２とを複数のワイヤロープＷが延びる方向に互いにオーバーラップさせない場合に比べて、第２基板４２と第４基板６２とを複数のワイヤロープＷが延びる方向に互いにオーバーラップさせた分だけ、ワイヤロープ検査装置１００を複数のワイヤロープＷが延びる方向に小型化することができる。 Further, in the present embodiment, as described above, the first substrate 41 and the third substrate 61 overlap each other on one side with respect to the plurality of wire ropes W in the direction in which the plurality of wire ropes W extend. Provided in. Further, the second substrate 42 and the fourth substrate 62 are provided on the other side of the plurality of wire ropes W so as to overlap each other in the direction in which the plurality of wire ropes W extend. As a result, the plurality of wire ropes W extend from the first substrate 41 and the third substrate 61 as compared with the case where the first substrate 41 and the third substrate 61 do not overlap each other in the direction in which the plurality of wire ropes W extend. The wire rope inspection device 100 can be miniaturized in the direction in which the plurality of wire ropes W extend by the amount of overlapping in the directions. Further, as compared with the case where the second substrate 42 and the fourth substrate 62 are not overlapped with each other in the direction in which the plurality of wire ropes W extend, the direction in which the plurality of wire ropes W extend in the second substrate 42 and the fourth substrate 62. The wire rope inspection device 100 can be miniaturized in the direction in which the plurality of wire ropes W extend by the amount of overlapping with each other.
　また、本実施形態では、上記のように、ワイヤロープ検査装置１００を、第１受信コイル１１ａを収容する第１筐体部３２と、第２受信コイル１１ｂを収容する第２筐体部３３とを含む筐体３を備えるように構成する。また、第１筐体部３２および第２筐体部３３を、互いに分割可能に接続する。これにより、第１受信コイル１１ａを収容する第１筐体部３２と、第２受信コイル１１ｂを収容する第２筐体部３３とを互いに分割することができるので、第１受信コイル１１ａと第２受信コイル１１ｂとの間に複数のワイヤロープＷを容易に配置することができる。 Further, in the present embodiment, as described above, the wire rope inspection device 100 includes the first housing portion 32 accommodating the first receiving coil 11a and the second housing portion 33 accommodating the second receiving coil 11b. It is configured to include the housing 3 including the above. Further, the first housing portion 32 and the second housing portion 33 are connected to each other in a separable manner. As a result, the first housing portion 32 accommodating the first receiving coil 11a and the second housing portion 33 accommodating the second receiving coil 11b can be separated from each other, so that the first receiving coil 11a and the first receiving coil 11a can be separated from each other. A plurality of wire ropes W can be easily arranged between the two receiving coils 11b.
　また、本実施形態では、上記のように、第１受信コイル１１ａおよび第２受信コイル１１ｂでは、複数のワイヤロープＷが延びる方向に直交する方向の幅Ｗ１およびＷ３が、複数のワイヤロープＷが延びる方向の幅Ｗ２およびＷ４よりも大きい。これにより、複数のワイヤロープＷが延びる方向に直交する方向の幅Ｗ１およびＷ３を複数のワイヤロープＷが延びる方向の幅Ｗ２およびＷ４よりも大きくすることにより、第１受信コイル１１ａおよび第２受信コイル１１ｂにより複数のワイヤロープＷの磁束を広範囲に検知することができるとともに、複数のワイヤロープＷが延びる方向の幅Ｗ２およびＷ４を複数のワイヤロープＷが延びる方向に直交する方向の幅Ｗ１およびＷ３よりも小さくすることにより、ワイヤロープ検査装置１００が複数のワイヤロープＷが延びる方向に大型化することを抑制することができる。 Further, in the present embodiment, as described above, in the first receiving coil 11a and the second receiving coil 11b, the widths W1 and W3 in the direction orthogonal to the extending direction of the plurality of wire ropes W have the widths W1 and W3, and the plurality of wire ropes W have a plurality of wire ropes W. It is larger than the widths W2 and W4 in the extending direction. As a result, the widths W1 and W3 in the direction orthogonal to the extending direction of the plurality of wire ropes W are made larger than the widths W2 and W4 in the direction in which the plurality of wire ropes W extend, so that the first receiving coil 11a and the second receiving are received. The coil 11b can detect the magnetic flux of the plurality of wire ropes W in a wide range, and the widths W2 and W4 in the direction in which the plurality of wire ropes W extend are the widths W1 and W1 in the direction orthogonal to the direction in which the plurality of wire ropes W extend. By making it smaller than W3, it is possible to prevent the wire rope inspection device 100 from becoming larger in the direction in which the plurality of wire ropes W extend.
　また、本実施形態では、上記のように、ワイヤロープ検査装置１００を、複数のワイヤロープＷに対して予め磁界を印加することにより、複数のワイヤロープＷの磁化の大きさと向きとを整える磁界印加部５０を備えるように構成する。これにより、複数のワイヤロープＷに対して予め磁界が印加されるので、複数のワイヤロープＷの磁化の大きさと向きとを一定にすることができる。その結果、差動コイル１１から出力される検知信号のノイズを低減することができるので、検知信号のＳ／Ｎ比を向上させることができる。したがって、検知信号のＳ／Ｎ比を向上させることによって、複数のワイヤロープＷの状態（異常の有無）をより精度よく検査することができる。 Further, in the present embodiment, as described above, the wire rope inspection device 100 applies a magnetic field to the plurality of wire ropes W in advance to adjust the magnitude and direction of the magnetization of the plurality of wire ropes W. It is configured to include an application unit 50. As a result, a magnetic field is applied to the plurality of wire ropes W in advance, so that the magnitude and direction of magnetization of the plurality of wire ropes W can be made constant. As a result, the noise of the detection signal output from the differential coil 11 can be reduced, so that the S / N ratio of the detection signal can be improved. Therefore, by improving the S / N ratio of the detection signal, the state (presence or absence of abnormality) of the plurality of wire ropes W can be inspected more accurately.
［変形例］
　なお、今回開示された実施形態は、すべての点で例示であって制限的なものではないと考えられるべきである。本発明の範囲は、上記した実施形態の説明ではなく、請求の範囲によって示され、さらに請求の範囲と均等の意味および範囲内でのすべての変更（変形例）が含まれる。 [Modification example]
It should be noted that the embodiments disclosed this time are exemplary in all respects and are not considered to be restrictive. The scope of the present invention is shown by the scope of claims, not the description of the above-described embodiment, and further includes all modifications (modifications) within the meaning and scope equivalent to the scope of claims.
　たとえば、上記実施形態では、ワイヤロープ検査システムがエレベータに用いられるワイヤロープを検査するシステムである例を示したが、本発明はこれに限られない。本発明では、ワイヤロープ検査システムがクレーンや、吊り橋、ロボットなどに用いられるワイヤロープを検査するシステムであってもよい。なお、吊り橋に使用されるワイヤロープのように、ワイヤロープ自体が移動しない場合には、ワイヤロープ検査装置をワイヤロープに沿って移動させながら、ワイヤロープ検査装置によるワイヤロープの磁束の計測が行われればよい。 For example, in the above embodiment, the wire rope inspection system is an example of a system for inspecting a wire rope used in an elevator, but the present invention is not limited to this. In the present invention, the wire rope inspection system may be a system for inspecting wire ropes used for cranes, suspension bridges, robots, and the like. When the wire rope itself does not move like the wire rope used for a suspension bridge, the wire rope inspection device measures the magnetic flux of the wire rope while moving the wire rope inspection device along the wire rope. You just have to be.
　また、上記実施形態では、ワイヤロープが、８つ設けられている例を示したが、本発明はこれに限られない。本発明では、ワイヤロープが、２～７または９つ以上設けられていてもよい。 Further, in the above embodiment, an example in which eight wire ropes are provided is shown, but the present invention is not limited to this. In the present invention, 2 to 7 or 9 or more wire ropes may be provided.
　また、上記実施形態では、第１受信コイルおよび第２受信コイルが、矩形状に形成されている例を示したが、本発明はこれに限られない。本発明では、第１受信コイルおよび第２受信コイルが、楕円状に形成されていてもよい。 Further, in the above embodiment, an example in which the first receiving coil and the second receiving coil are formed in a rectangular shape is shown, but the present invention is not limited to this. In the present invention, the first receiving coil and the second receiving coil may be formed in an elliptical shape.
　また、上記実施形態では、ワイヤロープ検査装置が、励磁部として励振コイルを備えている例を示したが、本発明はこれに限られない。本発明では、ワイヤロープ検査装置が、励磁部として励振コイル以外の永久磁石などの励磁部を備えていてもよい。 Further, in the above embodiment, an example is shown in which the wire rope inspection device includes an exciting coil as an exciting portion, but the present invention is not limited to this. In the present invention, the wire rope inspection device may include an exciting part such as a permanent magnet other than the exciting coil as the exciting part.
　また、上記実施形態では、ワイヤロープ検査装置が、第１筐体部および第２筐体部が、完全に離間可能に構成されている例を示したが、本発明はこれに限られない。本発明では、第１筐体部および第２筐体部が、ヒンジ部を介して接続されていてもよい。 Further, in the above embodiment, the wire rope inspection device shows an example in which the first housing portion and the second housing portion are configured so as to be completely separable, but the present invention is not limited to this. In the present invention, the first housing portion and the second housing portion may be connected via a hinge portion.
　また、上記実施形態では、磁界印加部が、差動コイルからＺ１方向側に離間した位置に設けられている例を示したが、本発明はこれに限られない。本発明では、磁界印加部が、差動コイルからＺ１方向側に離間した位置およびＺ２方向側に離間した位置の両方に設けられていてもよい。 Further, in the above embodiment, an example is shown in which the magnetic field application unit is provided at a position separated from the differential coil on the Z1 direction side, but the present invention is not limited to this. In the present invention, the magnetic field application portion may be provided at both a position separated from the differential coil on the Z1 direction side and a position separated on the Z2 direction side.
　また、上記実施形態では、差動コイルの第１受信コイルが第１基板に設けられ、差動コイルの第２受信コイルが第２基板に設けられ、励振コイルの第１コイル部が第３基板に設けられ、励振コイルの第２コイル部が第４基板に設けられる例を示したが、本発明はこれに限られない。たとえば、図１２に示す変形例のように、差動コイル１１の第１受信コイル１１ａと励振コイル１２の第１コイル部１２ａとが共通の第１多層基板７１に設けられるとともに、差動コイル１１の第２受信コイル１１ｂと励振コイル１２の第２コイル部１２ｂとが共通の第２多層基板７２に設けられていてもよい。これにより、第１受信コイル１１ａ、第１コイル部１２ａ、第２受信コイル１１ｂ、および、第２コイル部１２ｂとに対して別個に独立して基板を設ける場合に比べて、部品点数を少なくすることができるとともに、ワイヤロープ検査装置１００の構造を簡素化することができる。 Further, in the above embodiment, the first receiving coil of the differential coil is provided on the first substrate, the second receiving coil of the differential coil is provided on the second substrate, and the first coil portion of the exciting coil is provided on the third substrate. However, the present invention is not limited to this, although an example is shown in which the second coil portion of the excitation coil is provided on the fourth substrate. For example, as in the modified example shown in FIG. 12, the first receiving coil 11a of the differential coil 11 and the first coil portion 12a of the exciting coil 12 are provided on the common first multilayer substrate 71, and the differential coil 11 is provided. The second receiving coil 11b and the second coil portion 12b of the exciting coil 12 may be provided on the common second multilayer substrate 72. As a result, the number of parts is reduced as compared with the case where the substrate is provided independently of the first receiving coil 11a, the first coil portion 12a, the second receiving coil 11b, and the second coil portion 12b. At the same time, the structure of the wire rope inspection device 100 can be simplified.
　また、上記実施形態では、ワイヤロープ検査装置が処理装置に検知信号を出力するとともに、処理装置がワイヤロープ検査装置から取得した検知信号に基づいて、ワイヤロープの状態判定を行う構成の例を示したが、本発明はこれに限られない。たとえば、図１３に示す変形例のように、ワイヤロープ検査装置４００の処理部４２１が、差動コイル１１により検知された検知信号を取得するとともに、取得した検知信号に基づいてワイヤロープＷの状態判定を行うように構成されていてもよい。この場合、処理部４２１が、ワイヤロープＷの状態判定結果を通信部２６を介して処理装置２００に出力するように構成されていてもよい。 Further, in the above embodiment, an example of a configuration in which the wire rope inspection device outputs a detection signal to the processing device and the processing device determines the state of the wire rope based on the detection signal acquired from the wire rope inspection device is shown. However, the present invention is not limited to this. For example, as in the modified example shown in FIG. 13, the processing unit 421 of the wire rope inspection device 400 acquires the detection signal detected by the differential coil 11, and the state of the wire rope W based on the acquired detection signal. It may be configured to make a determination. In this case, the processing unit 421 may be configured to output the state determination result of the wire rope W to the processing device 200 via the communication unit 26.
［態様］
　上記した例示的な実施形態は、以下の態様の具体例であることが当業者により理解される。 [Aspect]
It will be understood by those skilled in the art that the above exemplary embodiments are specific examples of the following embodiments.
（項目１）
　複数のワイヤロープの磁束を検知する差動コイルと、
　前記差動コイルにより検知された検知信号を取得する処理部と、を備え、
　前記差動コイルは、差動接続された平面コイルである第１受信コイルと平面コイルである第２受信コイルとを含み、
　前記第１受信コイルおよび前記第２受信コイルは、前記複数のワイヤロープを挟むように、互いの検知面同士が対向するように配置されていることにより、前記複数のワイヤロープの磁束を共通に検知するように構成されている、ワイヤロープ検査装置。 (Item 1)
A differential coil that detects the magnetic flux of multiple wire ropes,
A processing unit that acquires a detection signal detected by the differential coil is provided.
The differential coil includes a first receiving coil which is a differentially connected planar coil and a second receiving coil which is a planar coil.
The first receiving coil and the second receiving coil are arranged so that their detection surfaces face each other so as to sandwich the plurality of wire ropes, so that the magnetic fluxes of the plurality of wire ropes can be shared in common. A wire rope inspection device that is configured to detect.
（項目２）
　前記第１受信コイルおよび前記第２受信コイルは、前記複数のワイヤロープの配列方向において、前記複数のワイヤロープの一方端のワイヤロープから他方端のワイヤロープの間の距離よりも大きい幅を有する、項目１に記載のワイヤロープ検査装置。 (Item 2)
The first receiving coil and the second receiving coil have a width larger than the distance between the wire rope at one end and the wire rope at the other end of the plurality of wire ropes in the arrangement direction of the plurality of wire ropes. , Item 1. The wire rope inspection apparatus.
（項目３）
　前記第１受信コイルが設けられた平板状の第１基板と、
　前記第２受信コイルが設けられた平板状の第２基板と、をさらに備える、項目１または２に記載のワイヤロープ検査装置。 (Item 3)
A flat plate-shaped first substrate provided with the first receiving coil and
The wire rope inspection apparatus according to item 1 or 2, further comprising a flat plate-shaped second substrate provided with the second receiving coil.
（項目４）
　前記複数のワイヤロープに磁束を共通に印加する励磁部をさらに備える、項目１～３のいずれか１項に記載のワイヤロープ検査装置。 (Item 4)
The wire rope inspection apparatus according to any one of items 1 to 3, further comprising an exciting portion that commonly applies magnetic flux to the plurality of wire ropes.
（項目５）
　前記励磁部は、第１励磁部と、前記複数のワイヤロープを挟むように前記第１励磁部と対向するように設けられた第２励磁部とを含む、項目４に記載のワイヤロープ検査装置。 (Item 5)
The wire rope inspection apparatus according to item 4, wherein the exciting portion includes a first exciting portion and a second exciting portion provided so as to face the first exciting portion so as to sandwich the plurality of wire ropes. ..
（項目６）
　前記励磁部は、前記第１励磁部としての第１コイル部と、前記第２励磁部としての第２コイル部とを有し、前記複数のワイヤロープの磁化の状態を共通に励振する励振コイルを含み、
　前記第１コイル部が設けられた平板状の第３基板と、
　前記第２コイル部が設けられた平板状の第４基板と、をさらに備える、項目５に記載のワイヤロープ検査装置。 (Item 6)
The exciting portion has a first coil portion as the first exciting portion and a second coil portion as the second exciting portion, and is an exciting coil that commonly excites the magnetized state of the plurality of wire ropes. Including
A flat plate-shaped third substrate provided with the first coil portion and
The wire rope inspection device according to item 5, further comprising a flat plate-shaped fourth substrate provided with the second coil portion.
（項目７）
　前記第１受信コイルが設けられた平板状の第１基板と、
　前記第２受信コイルが設けられた平板状の第２基板と、をさらに備え、
　前記第１基板と前記第３基板とは、前記複数のワイヤロープに対して一方側において、前記複数のワイヤロープが延びる方向に互いにオーバーラップするように設けられており、
　前記第２基板と前記第４基板とは、前記複数のワイヤロープに対して他方側において、前記複数のワイヤロープが延びる方向に互いにオーバーラップするように設けられている、項目６に記載のワイヤロープ検査装置。 (Item 7)
A flat plate-shaped first substrate provided with the first receiving coil and
A flat plate-shaped second substrate provided with the second receiving coil is further provided.
The first substrate and the third substrate are provided on one side of the plurality of wire ropes so as to overlap each other in the direction in which the plurality of wire ropes extend.
Item 6. The wire according to item 6, wherein the second substrate and the fourth substrate are provided on the other side of the plurality of wire ropes so as to overlap each other in a direction in which the plurality of wire ropes extend. Rope inspection device.
（項目８）
　前記第１受信コイルを収容する第１筐体部と、前記第２受信コイルを収容する第２筐体部とを含む筐体をさらに備え、
　前記第１筐体部および前記第２筐体部は、互いに分割可能に接続されている、項目１～７のいずれか１項に記載のワイヤロープ検査装置。 (Item 8)
A housing including a first housing portion for accommodating the first receiving coil and a second housing portion for accommodating the second receiving coil is further provided.
The wire rope inspection device according to any one of items 1 to 7, wherein the first housing portion and the second housing portion are connected to each other in a divisible manner.
（項目９）
　前記第１受信コイルおよび前記第２受信コイルでは、前記複数のワイヤロープが延びる方向に直交する方向の幅が、前記複数のワイヤロープが延びる方向の幅よりも大きい、項目１～８のいずれか１項に記載のワイヤロープ検査装置。 (Item 9)
In any of the items 1 to 8, in the first receiving coil and the second receiving coil, the width in the direction orthogonal to the extending direction of the plurality of wire ropes is larger than the width in the direction in which the plurality of wire ropes extend. The wire rope inspection apparatus according to item 1.
（項目１０）
　前記複数のワイヤロープに対して予め磁界を印加することにより、前記複数のワイヤロープの磁化の大きさと向きとを整える磁界印加部をさらに備える、項目１～９のいずれか１項に記載のワイヤロープ検査装置。 (Item 10)
Item 2. The wire according to any one of items 1 to 9, further comprising a magnetic field applying portion for adjusting the magnitude and direction of magnetization of the plurality of wire ropes by applying a magnetic field to the plurality of wire ropes in advance. Rope inspection device.
（項目１１）
　複数のワイヤロープの磁束を検知する差動コイルを備えるワイヤロープ検査装置と、
　前記差動コイルにより検知された検知信号を取得する処理装置と、を備え、
　前記差動コイルは、差動接続された平面コイルである第１受信コイルと平面コイルである第２受信コイルとを含み、
　前記第１受信コイルおよび前記第２受信コイルは、前記複数のワイヤロープを挟むように、互いの検知面同士が対向するように配置されていることにより、前記複数のワイヤロープの磁束を共通に検知するように構成されている、ワイヤロープ検査システム。 (Item 11)
A wire rope inspection device equipped with a differential coil that detects the magnetic flux of multiple wire ropes,
A processing device for acquiring a detection signal detected by the differential coil is provided.
The differential coil includes a first receiving coil which is a differentially connected planar coil and a second receiving coil which is a planar coil.
The first receiving coil and the second receiving coil are arranged so that their detection surfaces face each other so as to sandwich the plurality of wire ropes, so that the magnetic fluxes of the plurality of wire ropes can be shared in common. A wire rope inspection system that is configured to detect.
　３　筐体
　１１　差動コイル
　１１ａ　第１受信コイル
　１１ｂ　第２受信コイル
　１２　励振コイル（励磁部）
　１２ａ　第１コイル部（第１励磁部）
　１２ｂ　第２コイル部（第２励磁部）
　２１、４２１　処理部
　３２　第１筐体部
　３３　第２筐体部
　４１　第１基板
　４２　第２基板
　５０　磁界印加部
　６１　第３基板
　６２　第４基板
　１００、４００　ワイヤロープ検査装置
　２００　処理装置
　３００　ワイヤロープ検査システム
　Ｄ　距離 
　Ｗ　ワイヤロープ
　Ｗ１、Ｗ２、Ｗ３、Ｗ４　幅
 
  3 Housing 11 Differential coil 11a 1st receiving coil 11b 2nd receiving coil 12 Excitation coil (excitation part)
12a 1st coil part (1st exciting part)
12b 2nd coil part (2nd exciting part)
21,421 Processing unit 32 1st housing unit 33 2nd housing unit 41 1st substrate 42 2nd substrate 50 Magnetic field application unit 61 3rd substrate 62 4th substrate 100, 400 Wire rope inspection device 200 Processing device 300 Wire rope Inspection system D distance
W wire rope W1, W2, W3, W4 width

Claims (11)

  1. 　複数のワイヤロープの磁束を検知する差動コイルと、
    　前記差動コイルにより検知された検知信号を取得する処理部と、を備え、
    　前記差動コイルは、差動接続された平面コイルである第１受信コイルと平面コイルである第２受信コイルとを含み、
    　前記第１受信コイルおよび前記第２受信コイルは、前記複数のワイヤロープを挟むように、互いの検知面同士が対向するように配置されていることにより、前記複数のワイヤロープの磁束を共通に検知するように構成されている、ワイヤロープ検査装置。     A differential coil that detects the magnetic flux of multiple wire ropes,
    A processing unit that acquires a detection signal detected by the differential coil is provided.
    The differential coil includes a first receiving coil which is a differentially connected planar coil and a second receiving coil which is a planar coil.
    The first receiving coil and the second receiving coil are arranged so that their detection surfaces face each other so as to sandwich the plurality of wire ropes, so that the magnetic fluxes of the plurality of wire ropes can be shared in common. A wire rope inspection device that is configured to detect.
  2. 　前記第１受信コイルおよび前記第２受信コイルは、前記複数のワイヤロープの配列方向において、前記複数のワイヤロープの一方端のワイヤロープから他方端のワイヤロープの間の距離よりも大きい幅を有する、請求項１に記載のワイヤロープ検査装置。 The first receiving coil and the second receiving coil have a width larger than the distance between the wire rope at one end and the wire rope at the other end of the plurality of wire ropes in the arrangement direction of the plurality of wire ropes. , The wire rope inspection apparatus according to claim 1.
  3. 　前記第１受信コイルが設けられた平板状の第１基板と、
    　前記第２受信コイルが設けられた平板状の第２基板と、をさらに備える、請求項１または２に記載のワイヤロープ検査装置。     A flat plate-shaped first substrate provided with the first receiving coil and
    The wire rope inspection apparatus according to claim 1 or 2, further comprising a flat plate-shaped second substrate provided with the second receiving coil.
  4. 　前記複数のワイヤロープに磁束を共通に印加する励磁部をさらに備える、請求項１～３のいずれか１項に記載のワイヤロープ検査装置。 The wire rope inspection device according to any one of claims 1 to 3, further comprising an exciting portion that commonly applies magnetic flux to the plurality of wire ropes.
  5. 　前記励磁部は、第１励磁部と、前記複数のワイヤロープを挟むように前記第１励磁部と対向するように設けられた第２励磁部とを含む、請求項４に記載のワイヤロープ検査装置。 The wire rope inspection according to claim 4, wherein the exciting portion includes a first exciting portion and a second exciting portion provided so as to face the first exciting portion so as to sandwich the plurality of wire ropes. Device.
  6. 　前記励磁部は、前記第１励磁部としての第１コイル部と、前記第２励磁部としての第２コイル部とを有し、前記複数のワイヤロープの磁化の状態を共通に励振する励振コイルを含み、
    　前記第１コイル部が設けられた平板状の第３基板と、
    　前記第２コイル部が設けられた平板状の第４基板と、をさらに備える、請求項５に記載のワイヤロープ検査装置。     The exciting portion has a first coil portion as the first exciting portion and a second coil portion as the second exciting portion, and is an exciting coil that commonly excites the magnetized state of the plurality of wire ropes. Including
    A flat plate-shaped third substrate provided with the first coil portion and
    The wire rope inspection device according to claim 5, further comprising a flat plate-shaped fourth substrate provided with the second coil portion.
  7. 　前記第１受信コイルが設けられた平板状の第１基板と、
    　前記第２受信コイルが設けられた平板状の第２基板と、をさらに備え、
    　前記第１基板と前記第３基板とは、前記複数のワイヤロープに対して一方側において、前記複数のワイヤロープが延びる方向に互いにオーバーラップするように設けられており、
    　前記第２基板と前記第４基板とは、前記複数のワイヤロープに対して他方側において、前記複数のワイヤロープが延びる方向に互いにオーバーラップするように設けられている、請求項６に記載のワイヤロープ検査装置。     A flat plate-shaped first substrate provided with the first receiving coil and
    A flat plate-shaped second substrate provided with the second receiving coil is further provided.
    The first substrate and the third substrate are provided on one side of the plurality of wire ropes so as to overlap each other in the direction in which the plurality of wire ropes extend.
    The sixth aspect of claim 6, wherein the second substrate and the fourth substrate are provided on the other side of the plurality of wire ropes so as to overlap each other in the direction in which the plurality of wire ropes extend. Wire rope inspection equipment.
  8. 　前記第１受信コイルを収容する第１筐体部と、前記第２受信コイルを収容する第２筐体部とを含む筐体をさらに備え、
    　前記第１筐体部および前記第２筐体部は、互いに分割可能に接続されている、請求項１～７のいずれか１項に記載のワイヤロープ検査装置。     A housing including a first housing portion for accommodating the first receiving coil and a second housing portion for accommodating the second receiving coil is further provided.
    The wire rope inspection device according to any one of claims 1 to 7, wherein the first housing portion and the second housing portion are connected to each other in a divisible manner.
  9. 　前記第１受信コイルおよび前記第２受信コイルでは、前記複数のワイヤロープが延びる方向に直交する方向の幅が、前記複数のワイヤロープが延びる方向の幅よりも大きい、請求項１～８のいずれか１項に記載のワイヤロープ検査装置。 The first receiving coil and the second receiving coil, any of claims 1 to 8, wherein the width in the direction orthogonal to the extending direction of the plurality of wire ropes is larger than the width in the direction in which the plurality of wire ropes extend. The wire rope inspection device according to item 1.
  10. 　前記複数のワイヤロープに対して予め磁界を印加することにより、前記複数のワイヤロープの磁化の大きさと向きとを整える磁界印加部をさらに備える、請求項１～９のいずれか１項に記載のワイヤロープ検査装置。 The invention according to any one of claims 1 to 9, further comprising a magnetic field applying portion that adjusts the magnitude and direction of magnetization of the plurality of wire ropes by applying a magnetic field to the plurality of wire ropes in advance. Wire rope inspection equipment.
  11. 　複数のワイヤロープの磁束を検知する差動コイルを備えるワイヤロープ検査装置と、
    　前記差動コイルにより検知された検知信号を取得する処理装置と、を備え、
    　前記差動コイルは、差動接続された平面コイルである第１受信コイルと平面コイルである第２受信コイルとを含み、
    　前記第１受信コイルおよび前記第２受信コイルは、前記複数のワイヤロープを挟むように、互いの検知面同士が対向するように配置されていることにより、前記複数のワイヤロープの磁束を共通に検知するように構成されている、ワイヤロープ検査システム。
          A wire rope inspection device equipped with a differential coil that detects the magnetic flux of multiple wire ropes,
    A processing device for acquiring a detection signal detected by the differential coil is provided.
    The differential coil includes a first receiving coil which is a differentially connected planar coil and a second receiving coil which is a planar coil.
    The first receiving coil and the second receiving coil are arranged so that their detection surfaces face each other so as to sandwich the plurality of wire ropes, so that the magnetic fluxes of the plurality of wire ropes can be shared in common. A wire rope inspection system that is configured to detect.
PCT/JP2020/036220 2020-03-19 2020-09-25 Wire rope inspection device and wire rope inspection system WO2021186768A1 (en)

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