WO2021186768A1 - Dispositif d'inspection de câble métallique et système d'inspection de câble métallique - Google Patents

Dispositif d'inspection de câble métallique et système d'inspection de câble métallique 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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Prior art keywords
coil
wire ropes
wire rope
receiving coil
wire
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PCT/JP2020/036220
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English (en)
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/ja
Publication of WO2021186768A1 publication Critical patent/WO2021186768A1/fr

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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

Ce dispositif d'inspection de câble métallique (100) est pourvu d'une bobine différentielle (11) qui détecte des flux magnétiques d'une pluralité de câbles métalliques (W). La bobine différentielle comprend une première bobine réceptrice (11a) et une seconde bobine réceptrice (11b). La première bobine réceptrice et la seconde bobine réceptrice sont disposées de telle sorte que leurs surfaces de détection se font face, de telle sorte que la pluralité de câbles métalliques est prise en sandwich entre celles-ci, et sont ainsi conçues pour détecter les flux magnétiques de la pluralité de câbles métalliques en commun.
PCT/JP2020/036220 2020-03-19 2020-09-25 Dispositif d'inspection de câble métallique et système d'inspection de câble métallique WO2021186768A1 (fr)

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US20220050152A1 (en) * 2020-08-17 2022-02-17 Shimadzu Corporation Magnetic Material Inspection Device
CN115072526A (zh) * 2022-06-14 2022-09-20 宁波市特种设备检验研究院 一种智能电梯钢带表面缺陷检测装置
WO2023053512A1 (fr) * 2021-09-28 2023-04-06 株式会社島津製作所 Dispositif et procédé d'inspection de câble

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JP2017075971A (ja) * 2012-10-30 2017-04-20 東京製綱株式会社 ワイヤロープの損傷判定装置，方法およびプログラム
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US20220050152A1 (en) * 2020-08-17 2022-02-17 Shimadzu Corporation Magnetic Material Inspection Device
US11493574B2 (en) * 2020-08-17 2022-11-08 Shimadzu Corporation Magnetic material inspection device
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CN115072526A (zh) * 2022-06-14 2022-09-20 宁波市特种设备检验研究院 一种智能电梯钢带表面缺陷检测装置
CN115072526B (zh) * 2022-06-14 2023-08-18 宁波市特种设备检验研究院 一种智能电梯钢带表面缺陷检测装置

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