WO2019146742A1 - ワイヤロープ探傷装置の出力確認装置 - Google Patents
ワイヤロープ探傷装置の出力確認装置 Download PDFInfo
- Publication number
- WO2019146742A1 WO2019146742A1 PCT/JP2019/002407 JP2019002407W WO2019146742A1 WO 2019146742 A1 WO2019146742 A1 WO 2019146742A1 JP 2019002407 W JP2019002407 W JP 2019002407W WO 2019146742 A1 WO2019146742 A1 WO 2019146742A1
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- WO
- WIPO (PCT)
- Prior art keywords
- wire rope
- flaw detector
- rope flaw
- pipe
- test
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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- 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
-
- 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
- G01N27/83—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws by investigating stray magnetic fields
-
- 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
- G01N27/80—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating mechanical hardness, e.g. by investigating saturation or remanence of ferromagnetic material
Definitions
- the present invention relates to an output confirmation device of a wire rope flaw detector for inspecting and confirming an output of a wire rope flaw detector for detecting a wire rope damage.
- an output confirmation device of a wire rope flaw detector including a cylindrical pipe and a falling body provided inside the pipe and falling along the pipe.
- the falling body is formed in a spherical shape.
- the falling body is made of a magnetic material.
- the pipe is installed at a portion of the wire rope flaw detector where the wire rope travels.
- the portion where the wire rope travels in the wire rope flaw detector is referred to as a wire rope installation portion.
- the pipe is provided at the wire rope installation portion in a state of being stood from a horizontal surface so that the falling object falls. With the pipe installed at the wire rope installation part, the falling object moves inside the pipe.
- the wire rope flaw detector comprises a magnetic sensor.
- the wire rope flaw detector outputs a signal based on the magnetic flux detected by the magnetic sensor when the falling object passes by the side of the wire rope installation portion. Based on the signal output from the wire rope flaw detector, the presence or absence of an abnormality in the output of the wire rope flaw detector is confirmed.
- the magnet is used for the wire rope installation part of a wire rope flaw detector. Therefore, a magnetic force acts between the falling object and the wire rope installation portion. Thus, the falling object receives suction from the wire rope installation portion. When the suction force received by the falling body is large, the falling body is prevented from falling. In this case, there is a problem that it is not possible to confirm the presence or absence of an abnormality in the output of the wire rope flaw detector.
- the present invention has been made to solve the above-described problems, and an object thereof is to confirm the output of the wire rope flaw detector which can more reliably confirm the presence or absence of an output of the wire rope flaw detector.
- An apparatus is provided.
- An output confirmation device of a wire rope flaw detector includes a pipe and a test body moving inside the pipe, and the pipe is a wire rope flaw detector when the wire rope flaw detector detects a damage of the wire rope.
- the test piece is a test strip guide made of nonmagnetic material and a test strip guide made of nonmagnetic material and a test strip made of magnetic material. Have.
- the test body has the test piece guide made of nonmagnetic material and the test piece made of magnetic material. Therefore, the weight of the test body can be increased without changing the weight of the test piece. Therefore, it is possible to suppress that the magnetic force acting between the test body and the wire rope installation portion of the wire rope flaw detector prevents the fall of the test body. As a result, the presence or absence of an abnormality in the output of the wire rope flaw detector can be confirmed more reliably.
- FIG. 1 It is a schematic diagram which shows each side of the wire rope flaw detector to which the output confirmation apparatus of the wire rope flaw detector based on Embodiment 1 of this invention is applied, and the wire rope with which damage is confirmed by this wire rope flaw detector. .
- FIG. 1 It is a perspective view which shows the movement start position adjustment part of FIG. It is a longitudinal cross-sectional view which shows the movement start position adjustment part of FIG. It is a schematic diagram which shows the side surface of the state in which the wire rope flaw detector was attached to the output confirmation apparatus of the wire rope flaw detector of FIG. It is a flowchart which shows the procedure which confirms the output of a wire rope flaw detector using the output confirmation apparatus of the wire rope flaw detector of FIG. It is a perspective view which shows the modification of the output confirmation apparatus of the wire rope flaw detector of FIG. It is a perspective view which shows the test object in the output confirmation apparatus of the wire rope flaw detector concerning Embodiment 2 of this invention. It is a longitudinal cross-sectional view which shows the test body of FIG.
- FIG. 15 is a cross-sectional view of the outermost magnetic shield of FIG. 14; It is a cross-sectional view which shows the case where a thumbscrew is used as outermost magnetic shielding of FIG.
- FIG. 1 shows a side view of a wire rope flaw detector to which an output confirmation device of a wire rope flaw detector according to a first embodiment of the present invention is applied and a wire rope whose damage is confirmed by the wire rope flaw detector. It is a schematic diagram.
- the wire rope flaw detector 1 detects damage to the wire rope 2.
- the wire rope 2 is used for an elevator, a construction crane, and the like.
- the output confirmation device of the wire rope flaw detector is a device for inspecting the output of the wire rope flaw detector 1 and confirming whether the wire rope flaw detector 1 is normal or abnormal.
- the wire rope 2 As the wire rope 2 is used for a long time, wear, corrosion, etc. occur in the wire rope 2. As a result, the wire rope 2 is damaged, such as broken or broken. Therefore, exchange of the wire rope 2 is performed regularly.
- a method of detecting the damage of the wire rope 2 a method of detecting the magnetic flux leaking from the damaged portion of the wire rope 2 by using a magnet to magnetize a partial section in the longitudinal direction of the wire rope 2 traveling at a constant speed There is.
- the wire rope flaw detector 1 detects the damage of the wire rope 2 by detecting the magnetic flux leaking from the damaged part.
- the wire rope flaw detector 1 includes a pair of permanent magnets 11 provided separately from each other, and a magnetic sensor 12.
- the pair of permanent magnets 11 are disposed apart from each other in the longitudinal direction of the wire rope 2.
- One of the pair of permanent magnets 11 is a first permanent magnet 11a, and the other is a second permanent magnet 11b.
- the magnetic sensor 12 is disposed between the first permanent magnet 11a and the second permanent magnet 11b. The magnetic sensor 12 detects the leakage flux generated from the damaged portion of the wire rope 2.
- the wire rope flaw detector 1 further includes a back yoke 13 to which each of the pair of permanent magnets 11 is fixed, and a pair of pole pieces 14 provided to each of the pair of permanent magnets 11.
- One of the pair of pole pieces 14 is a first pole piece 14a, and the other is a second pole piece 14b.
- the first pole piece 14a is fixed to the first permanent magnet 11a.
- the second pole piece 14b is fixed to the second permanent magnet 11b.
- the magnetic sensor 12 is fixed to the back yoke 13.
- Each of the back yoke 13, the first pole piece 14a and the second pole piece 14b is made of a magnetic material.
- the first permanent magnet 11a and the second permanent magnet 11b magnetize the wire rope 2 when the wire rope 2 is attached to the wire rope flaw detector 1. That is, the first permanent magnet 11 a and the second permanent magnet 11 b function as a magnetizer that magnetizes the wire rope 2. By magnetizing the wire rope 2, a magnetic loop 3 passing through the first permanent magnet 11a, the second permanent magnet 11b, the back yoke 13, the first pole piece 14a, the second pole piece 14b and the wire rope 2 is formed. In addition, as a magnetizer, you may use not only the permanent magnet 11 but an electromagnet.
- FIG. 2 is a perspective view showing the wire rope flaw detector 1 of FIG.
- FIG. 3 is an exploded perspective view showing the wire rope flaw detector 1 of FIG.
- the first permanent magnet 11 a and the second permanent magnet 11 b are for magnetizing the wire rope 2.
- the back yoke 13 connects the first permanent magnet 11 a and the second permanent magnet 11 b.
- Each of the first pole piece 14 a and the second pole piece 14 b is formed in a U shape in order to efficiently flow the magnetic flux generated from the first permanent magnet 11 a and the second permanent magnet 11 b into the wire rope 2.
- a magnetic sensor 12 is disposed at the center between the first pole piece 14a and the second pole piece 14b.
- the magnetic sensor 12 has a first search coil 12a and a second search coil 12b.
- Each of the first search coil 12a and the second search coil 12b is formed by forming a coil wound in an elliptical shape into a U-shape.
- the wire rope flaw detector 1 further includes a cover 15 that covers the permanent magnet 11, the magnetic sensor 12, and the pole piece 14.
- the cover 15 prevents the permanent magnet 11, the magnetic sensor 12 and the pole piece 14 from contacting the wire rope 2. By this, The permanent magnet 11, the magnetic sensor 12 and the pole piece 14 are protected.
- a U-shaped groove is formed in a portion where the wire rope 2 in the wire rope flaw detector 1 moves.
- a U-shaped groove is formed across the pair of pole pieces 14 and the magnetic sensor 12.
- the wire rope flaw detector 1 is installed such that the wire rope 2 is along a U-shaped groove formed in the wire rope flaw detector 1.
- a portion where the wire rope 2 in the wire rope flaw detector 1 moves, that is, a portion in which a U-shaped groove in the wire rope flaw detector 1 on which the wire rope 2 is installed is formed as a wire rope installation portion 16.
- the wire rope 2 is attached to the wire rope flaw detector 1 so that the wire rope 2 is installed on the wire rope installation portion 16.
- the wire rope flaw detector 1 may be attached to the wire rope 2 so that the wire rope 2 is installed on the wire rope installation portion 16.
- the wire rope 2 is moved relative to the wire rope flaw detector 1 in the longitudinal direction of the wire rope 2.
- the wire rope 2 may be moved relative to the wire rope flaw detector 1, and the wire rope flaw detector 1 relative to the wire rope 2 You may move it.
- the terminal device includes a determination unit that determines the presence or absence of damage to the wire rope 2 based on the output of the wire rope flaw detector 1, and a display unit that displays the determination result of the determination unit.
- a terminal device a personal computer is mentioned, for example.
- FIG. 4 is a perspective view showing the output confirmation device of the wire rope flaw detector to check and inspect the output of the wire rope flaw detector 1 of FIG.
- the output confirmation device 4A of the wire rope flaw detector comprises a pipe 41 and a test body 42 provided inside the pipe 41 and falling along the longitudinal direction of the pipe 41. The test body 42 moves inside the pipe 41 by falling.
- the output confirmation device 4A of the wire rope flaw detector comprises a pair of magnetic shields 43 provided around the pipe 41, and a movement start position adjustment unit 44 provided above the pipe 41.
- the output confirmation device 4A of the wire rope flaw detector includes an upper frame 45 provided on the upper part of the pipe 41 and a lower frame 46 provided on the lower part of the pipe 41.
- the pipe 41 is formed in a cylindrical shape.
- the pipe 41 is disposed so as to extend in a direction perpendicular to the horizontal surface, that is, in the vertical direction.
- the pipe 41 may be arranged such that the longitudinal direction of the pipe 41 is inclined with respect to the horizontal plane.
- the pipe 41 is made of nonmagnetic material. Thus, the pipe 41 is not affected by the magnetic force of the permanent magnet 11 used in the wire rope flaw detector 1.
- a notch 411 extending in the longitudinal direction of the pipe 41 is formed on a side wall of the pipe 41 except for both longitudinal end portions of the pipe 41. The notch 411 penetrates the side wall of the pipe 41 in the radial direction.
- the longitudinal direction of the pipe 41 coincides with the moving direction of the test body 42.
- the notch 411 formed in the pipe 41 has no burrs and is formed smoothly.
- the test body 42 has a test strip guide 421 provided inside the pipe 41, a test strip 422 provided on the top of the test strip guide 421, and a knob 423 provided on the test strip guide 421. .
- FIG. 5 is a perspective view showing the test body 42 of FIG. 6 is a longitudinal sectional view showing the test body 42 of FIG.
- the test piece guide 421 is made of a material having a rigidity enough to withstand deformation due to an impact of the test body 42 dropped.
- the test piece guide 421 is made of nonmagnetic material. Thus, the test piece guide 421 is not affected by the magnetic force of the permanent magnet 11 used in the wire rope flaw detector 1.
- the test piece guide 421 is formed in a cylindrical shape. Further, a disc-shaped concave portion 424 is formed on the top surface of the test piece guide 421.
- the outer peripheral surface of the test piece guide 421 is smooth without burrs.
- the outer peripheral surface of the test piece guide 421 contacts the inner peripheral surface of the side wall of the pipe 41.
- the test piece guide 421 has a side covering portion 425 which covers the side of the test piece 422.
- the test piece 422 is formed in a disk shape.
- the test piece 422 is disposed in the recess 424 of the test piece guide 421.
- the test piece 422 is made of a magnetic material.
- the knob 423 is provided on the outer peripheral surface of the test piece guide 421. Further, the knob 423 protrudes outward from the outer peripheral surface of the test piece guide 421 in the radial direction of the test piece guide 421. Further, the knob 423 extends from the outer peripheral surface of the test piece guide 421 to the outside of the pipe 41 through the notch 411. The total length of the knob 423 is adjusted to such a length that the operator's finger can easily lift the test body 42 by the operator's finger.
- each of the pair of magnetic shields 43 is formed in a plate shape.
- a pipe 41 is disposed between the pair of magnetic shields 43.
- the magnetic shield 43 is disposed around the wire rope installation portion 16 of the wire rope flaw detector 1.
- the magnetic shield 43 is not limited to the plate shape, and may be, for example, the shape of a solid round bar or the shape of a hollow round bar.
- the magnetic shield 43 is made of a magnetic material.
- the movement start position adjustment unit 44 is provided on the flange collar 441 and the flange collar 441, which is a support unit provided on the pipe 41 with the upper end portion of the pipe 41 inserted therein And a shaft 442 which is a main body.
- the movement start position adjustment unit 44 is made of nonmagnetic material.
- FIG. 7 is a perspective view showing the movement start position adjustment unit 44 of FIG.
- FIG. 8 is a longitudinal sectional view showing the movement start position adjustment unit 44 of FIG.
- the shaft 442 is formed in a round bar shape. A thread groove is formed on the outer peripheral surface of the shaft 442.
- the shaft 442 may be a bolt.
- the flange collar 441 is formed in a hooked hat shape.
- the flange collar 441 has a cylindrical insertion portion 443 in which a recess is formed on the lower surface, and a flange portion 444 provided at one longitudinal end of the insertion portion 443 and protruding radially outward of the insertion portion 443 have.
- the upper end of the pipe 41 is inserted into the recess formed in the insertion portion 443 from below.
- the diameter dimension of the recess formed in the insertion portion 443 is approximately the same as the outer diameter dimension of the pipe 41.
- the fitting of the pipe 41 to the flange collar 441 is such fitting that the pipe 41 can move in the axial direction of the pipe 41 with respect to the flange collar 441.
- the flange collar 441 is formed with a screw hole 445 into which the shaft 442 is inserted.
- the screw hole 445 is formed to extend in the longitudinal direction of the insertion portion 443. Rotating the shaft 442 changes the position of the shaft 442 relative to the flange collar 441 in the longitudinal direction of the insert 443. Thereby, the position of the shaft 442 in the moving direction of the test body 42 with respect to the flange collar 441 can be changed.
- the upper frame 45 has an upper plate 451 and an upper handle 452 provided on the upper plate 451.
- the upper frame 45 is made of nonmagnetic material.
- the upper plate 451 is formed with a through hole 453 into which the flange collar 441 is inserted from below.
- the diameter of the through hole 453 is substantially the same as the outer diameter of the insertion portion 443 of the flange collar 441.
- the fitting of the insertion portion 443 of the flange collar 441 with the through hole 453 of the upper plate 451 is such that the insertion portion 443 of the flange collar 441 can move in the axial direction of the pipe 41 with respect to the through hole 453 of the upper plate 451. It is fitting.
- the upper plate 451 is formed with a groove or a hole (not shown) to which the magnetic shield 43 is attached from below.
- the upper handle 452 is an upper plate 451 so that the wire rope installation portion 16 of the wire rope flaw detector 1 is disposed between the back yoke 13 and the upper handle 452 of the wire rope flaw detector 1 when viewed from above.
- the lower frame 46 has a lower plate 461 and a lower handle 462 provided on the lower plate 461.
- the lower frame 46 is made of nonmagnetic material.
- the lower plate 461 is formed with a groove (not shown) to which the lower end of the pipe 41 is attached.
- the lower plate 461 is formed with a groove (not shown) to which the magnetic shield 43 is attached.
- a shock absorbing material may be provided in a groove in which the lower end portion of the pipe 41 in the lower plate 461 is attached.
- the lower handle 462 is a lower plate 461 so that the wire rope installation portion 16 of the wire rope flaw detector 1 is disposed between the back yoke 13 and the lower handle 462 of the wire rope flaw detector 1 when viewed from above. Provided in
- FIG. 9 is a schematic view showing the side surface of the wire rope flaw detector 1A attached to the output confirmation device 4A of the wire rope flaw detector in FIG.
- FIG. 10 is a flowchart showing a procedure for confirming the output of the wire rope flaw detector 1 using the output verification device 4A of the wire rope flaw detector in FIG.
- FIG. 9 further shows a terminal device 5 to which the output of the wire rope flaw detector 1 is input, and a cable 6 connecting the wire rope flaw detector 1 and the terminal device 5 to each other.
- a wire rope flaw detector installation step is performed.
- the wire rope flaw detector 1 is assembled, and the wire rope flaw detector 1 and the terminal device 5 are electrically connected using the cable 6.
- the wire rope flaw detector 1 is attached to the output confirmation device 4A of the wire rope flaw detector, or the output confirmation device 4A of the wire rope flaw detector is attached to the wire rope flaw detector 1.
- the pipe 41 is installed in the wire rope installation portion 16 of the wire rope flaw detector 1.
- the output confirmation device 4A of the wire rope flaw detector is disposed so that the pipe 41 extends in the direction perpendicular to the horizontal plane.
- the flange collar 441 is pushed down to bring the lower surface of the flange collar 441 into contact with the upper surface of the wire rope flaw detector 1.
- step S102 an output taking preparation step is performed.
- the terminal device 5 is operated to bring the output of the wire rope flaw detector 1 into the terminal device 5.
- step S103 a test piece preparation step is performed.
- the finger of the worker lifts the tab 423 of the specimen 42 and slides the specimen 42 upward with respect to the pipe 41.
- the upper surface of the test body 42 is brought into contact with the lower surface of the shaft 442 of the movement start position adjustment unit 44. At this time, it is confirmed that the lower surface of the flange collar 441 is in contact with the upper surface of the wire rope flaw detector 1.
- step S104 a test object moving step is performed.
- the operator's finger is released from the knob 423 of the specimen 42. Thereby, the test body 42 falls along the pipe 41.
- step S105 an output signal taking process is performed.
- a detection signal of the magnetic sensor 12 when the test body 42 passes beside the magnetic sensor 12 of the wire rope flaw detector 1 is taken into the terminal device 5 as an output of the wire rope flaw detector 1.
- step S106 an abnormality presence / absence determination step is performed.
- the terminal device 5 compares the output of the wire rope flaw detection device 1 taken in with the output at the time of confirming the output of the normal wire rope flaw detection device 1 measured in advance, and performs wire rope flaw detection. It is determined whether the device 1 is normal.
- step S107 When it is determined in step S106 that the wire rope flaw detector 1 is not normal, in step S107, a replacement calibration process is performed. In the replacement calibration process, the components of the magnetic sensor 12 are replaced or the magnetic sensor 12 is calibrated. Thereafter, the process returns to step S101.
- step S106 when it is determined in step S106 that the wire rope flaw detector 1 is normal, the output of the wire rope flaw detector 1 is inspected to confirm whether the wire rope flaw detector 1 is normal or abnormal. To complete the procedure. Thereafter, the wire rope 2 is checked using the wire rope flaw detector 1.
- the test body 42 is constituted of the test piece guide 421 made of nonmagnetic material and magnetic material And the test strip 422.
- the weight of the test body 42 is adjusted so that the test body 42 can fall without being impeded by the suction force that the test body 42 receives from the permanent magnet 11 used in the wire rope flaw detector 1.
- the test strip guide 421 has a weight necessary for the test body 42 to fall. Change to Thereby, the test body 42 can be dropped smoothly.
- test strip guide 421 includes a side surface covering portion 425 provided on the side surface of the test strip 422. Thereby, this can prevent the test piece 422 from being worn by the friction between the test body 42 and the pipe 41. As a result, it is possible to prevent the fluctuation of the output of the wire rope flaw detector 1 due to the deterioration of the test piece 422.
- a notch 411 extending in the moving direction of the test piece 422 is formed on the side wall of the pipe 41.
- test body 42 has a tab 423 extending from the test piece guide 421 through the notch 411 to the outside of the pipe 41. Thus, the operator can easily lift the test body 42.
- a magnetic shield 43 made of a magnetic material is provided around the wire rope installation portion 16 of the wire rope flaw detector 1.
- the magnetic shield 43 is disposed outside the wire rope installation portion 16 of the wire rope flaw detector 1.
- a movement start position adjustment unit 44 is provided inside the pipe 41.
- the test body 42 falls in a state where the lower surface of the shaft 442 of the movement start position adjustment unit 44 and the upper surface of the test body 42 are in contact with each other. Thereby, it is possible to suppress variation in each measurement of the distance between the test body 42 and the magnetic sensor 12 when the movement of the test body 42 is started. As a result, it is possible to suppress variation in each measurement of the output of the wire rope flaw detector 1 input to the terminal device 5.
- the movement start position adjustment unit 44 has a flange collar 441 which is provided on the pipe 41 by inserting the pipe 41, and a shaft 442 which is provided on the flange collar 441 and which is applied to the upper surface of the test body 42.
- the position of the shaft 442 in the moving direction of the test body 42 with respect to the flange collar 441 can be changed. Thereby, the position of the test body 42 when the movement of the test body 42 is started can be freely set.
- the pipe 41 is movable in the axial direction of the pipe 41 with respect to the flange collar 441.
- the position of the test object 42 when the movement of the test object 42 is started can be set. Therefore, the reference of the movement start position of the test body 42 is the upper surface of the wire rope flaw detector 1.
- the movement of the test body 42 does not depend on the error of the attachment position of the wire rope flaw detector 1 with respect to the axial direction of the pipe 41 which occurs when the wire rope flaw detector 1 is attached to the output confirmation device 4A of the wire rope flaw detector
- the start position can be made constant. As a result, it is possible to suppress the variation of the measurement result for each measurement.
- the test body 42 is disposed inside the pipe 41, and the lower end of the pipe 41 is closed by the lower frame 46. Thereby, when the test body 42 is dropped, the test body 42 can be prevented from falling below the pipe 41. Therefore, it is not necessary for the operator to use a hand to catch the falling test body 42. As a result, the operator can perform the output confirmation operation of the wire rope flaw detector 1 with only one hand.
- the output confirmation device 4A of the wire rope flaw detector including the one pipe 41, the one test body 42, and the one movement start position adjustment unit 44 has been described.
- the output confirmation device 4B of the wire rope flaw detector including the plurality of pipes 41, the plurality of test bodies 42, and the plurality of movement start position adjustment units 44 may be used.
- each of the plurality of pipes 41 is disposed parallel to each other at an interval.
- a plurality of test bodies 42 are disposed one by one in each of the plurality of pipes 41.
- the magnetic shields 43 are also disposed between the pipes 41 adjacent to each other.
- the present invention can be used to check the output of the wire rope flaw detector 1 that simultaneously detects damage to a plurality of adjacent wire ropes in an elevator.
- FIG. 12 is a perspective view showing a test body in the output confirmation device of the wire rope flaw detector according to the second embodiment of the present invention.
- FIG. 13 is a longitudinal sectional view showing the test body of FIG.
- the output confirmation device 4C of the wire rope flaw detector according to the second embodiment differs from the output confirmation device 4A of the wire rope flaw detector according to the first embodiment in the configuration of the test body 47.
- the test body 47 includes a test piece guide lower portion 471, a test piece guide upper portion 472 provided on the test piece guide lower portion 471, and a test piece 473 provided on the inside of the test piece guide lower portion 471. Further, the test body 47 has a test strip spacer 474 provided inside the test strip guide lower portion 471 and a knob 475 provided on the test strip guide lower portion 471.
- the lower end portion of the test piece guide lower portion 471 is the lower end portion of the test body 47.
- the test specimen guide lower portion 471 is formed in a cylindrical shape. Further, on the side surface of the lower end portion of the test piece guide lower portion 471, an inclined surface 476 in which the widthwise dimension of the test body 47 becomes smaller as it goes downward is formed. A disc-shaped concave portion 477 is formed on the upper surface of the test piece guide lower portion 471.
- the lower test strip guide 471 is made of nonmagnetic material.
- the test piece guide lower portion 471 is made of a material having a rigidity that can withstand deformation due to an impact when the test body 47 falls.
- the test piece guide upper portion 472 is formed in a disk shape.
- the test strip guide upper portion 472 is disposed to cover the recess 477 of the test strip guide lower portion 471 from above.
- the test strip guide upper portion 472 is made of nonmagnetic material.
- the test piece 473 is formed in a disk shape.
- the test piece 473 is disposed in the recess 477 of the test piece guide lower portion 471.
- the test piece 473 is made of a magnetic material.
- the test piece spacer 474 is formed in a disk shape.
- the test strip spacer 474 is disposed in the recess 477 of the test strip guide lower portion 471.
- Test strip spacers 474 are superimposed on the test strip 473.
- the test piece spacer 474 is made of nonmagnetic material.
- the knob 475 is provided on the outer peripheral surface of the test piece guide lower portion 471.
- the knob 475 protrudes outward from the outer peripheral surface of the test piece guide lower portion 471 in the radial direction of the test piece guide lower portion 471.
- the knob 475 extends from the outer peripheral surface of the test piece guide lower portion 471 through the notch 411 to the outside of the pipe 41. The entire length of the knob 475 is adjusted to such a length that the operator's finger can easily lift the test body 47 by being hooked on the operator's finger.
- a through hole 478 extending in the moving direction of the test body 47 is formed in each of the test strip guide lower portion 471, the test strip guide upper portion 472, the test strip 473 and the test strip spacer 474.
- a through hole 478 extending in the moving direction of the test body 47 is formed in each of the test strip guide lower portion 471, the test strip guide upper portion 472, the test strip 473 and the test strip spacer 474.
- the other configuration is the same as that of the first embodiment.
- the procedure for confirming the output of the wire rope flaw detector 1 using the output verification device 4C of the wire rope flaw detector is the same as that of the first embodiment.
- the test body 47 is formed with the through holes 478 extending in the moving direction of the test body 47. . Thereby, air flows in the through hole 478 when the test body 47 moves. Therefore, the test body 47 can move smoothly. As a result, the variation of the detection signal output from the wire rope flaw detector 1 can be suppressed.
- an inclined surface 476 in which the widthwise dimension of the test body 47 becomes smaller as it goes downward is formed on the side surface of the lower end portion of the test piece guide lower portion 471.
- test piece 473 and the test piece spacer 474 are stacked on each other and disposed in the recess 477 of the test piece guide lower portion 471.
- the weight of the test body 47 can be easily adjusted by adjusting the dimensions in the thickness direction of each of the test piece 473 and the test piece spacer 474. In this case, the sum of the dimensions in the thickness direction of each of the test piece 473 and the test piece spacer 474 does not change.
- the force in the moving direction acting on the test body 47 can be adjusted.
- the force in the falling direction necessary for the test body 47 to fall can be easily adjusted with respect to the suction force acting on the test body 47 by the permanent magnet 11 used in the wire rope flaw detector 1 it can.
- FIG. 14 is a perspective view showing an output confirmation device of a wire rope flaw detector according to a third embodiment of the present invention.
- the output confirmation device 4D of the wire rope flaw detector according to the third embodiment is carried out in the configuration of the pair of magnetic shields 43 positioned outermost in the direction in which the magnetic shields 43 are arranged. This is different from the first embodiment and the second embodiment.
- Each of a pair of magnetic shields 43 located at the outermost side with respect to the arranged direction is taken as the outermost magnetic shield 48A.
- FIG. 15 is a cross-sectional view showing the outermost magnetic shield 48A of FIG.
- the outermost magnetic shield 48 ⁇ / b> A includes a magnetic shielding plate 481 and a spacer 482 provided opposite to the magnetic shielding plate 481. Also, the outermost magnetic shield 48 A has a stepped bolt 483 provided across the magnetic shielding plate 481 and the spacer 482, and a spring 484 provided between the magnetic shielding plate 481 and the spacer 482.
- the magnetic shielding plate 481 is made of a magnetic material.
- the magnetic shielding plate 481 is formed in a plate shape.
- the spacer 482 is made of nonmagnetic material.
- the spacer 482 is formed in a plate shape.
- a counter bored hole 485 is formed in the spacer 482.
- a stepped bolt 483 is inserted into the counter bored hole 485.
- the spacers 482 are attached to the magnetic shield plate 481 using stepped bolts 483.
- the spacer 482 is movable relative to the magnetic shield plate 481 in the axial direction of the stepped bolt 483.
- Spacers 482 are provided on the top and bottom of the magnetic shielding plate 481.
- the spacer 482 is formed with an inclined surface 486 to the extent that the wire rope flaw detector 1 can be smoothly inserted in the insertion direction of the wire rope flaw detector 1.
- the stepped bolt 483 is made of nonmagnetic material.
- the stepped bolt 483 is selected so that the head of the stepped bolt 483 does not protrude from the surface of the spacer 482 opposite to the magnetic shielding plate 481 when the spacer 482 moves and contacts the magnetic shielding plate 481 Be done.
- the spring 484 is made of nonmagnetic material.
- the spring 484 is disposed between the magnetic shielding plate 481 and the spacer 482.
- the spring 484 is a force applying member that pushes the spacer 482 toward the wire rope flaw detector 1 when the pipe is installed in the wire rope installation unit 16.
- a spacer 482 is disposed between the pipe 41 and the magnetic shielding plate 481 when the output confirmation device 4D of the wire rope flaw detector is attached to the wire rope flaw detector 1.
- a thumb screw 487 may be provided instead of the spring 484.
- the thumb screw 487 penetrates the magnetic shield plate 481 in the axial direction of the stepped bolt 483.
- the thumbscrew 487 is made of nonmagnetic material.
- the other configuration is the same as that of the first embodiment or the second embodiment.
- the procedure for confirming the output of the wire rope flaw detector 1 using the output confirmation device 4D of the wire rope flaw detector is the same as that of the first embodiment or the second embodiment.
- the thumbscrew 487 is tightened and the wire rope flaw detector 1 is pushed by the spacer 482.
- the output confirmation device 4D of the wire rope flaw detector according to the third embodiment of the present invention, when the pipe 41 is installed in the wire rope installation portion 16, the pipe 41 and the magnetic shielding plate 481 A spacer 482 is disposed between the This prevents the wire rope flaw detector 1 from contacting the magnetic shielding plate 481. As a result, it is possible to suppress the decrease in the accuracy of the detection signal of the output confirmation device 4D of the wire rope flaw detector.
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Abstract
Description
図1は、この発明の実施の形態1に係るワイヤロープ探傷装置の出力確認装置が適用されるワイヤロープ探傷装置とこのワイヤロープ探傷装置によって損傷が確認されるワイヤロープとのそれぞれの側面を示す模式図である。ワイヤロープ探傷装置1は、ワイヤロープ2の損傷を検出する。ワイヤロープ2は、エレベータ、工事用クレーンなどに用いられる。ワイヤロープ探傷装置の出力確認装置は、ワイヤロープ探傷装置1の出力を検査し、ワイヤロープ探傷装置1が正常であるか異常であるかを確認するための装置である。
永久磁石11、磁気センサ12およびポールピース14が保護される。
図12は、この発明の実施の形態2に係るワイヤロープ探傷装置の出力確認装置における試験体を示す斜視図である。図13は、図12の試験体を示す縦断面図である。実施の形態2に係るワイヤロープ探傷装置の出力確認装置4Cは、試験体47の構成において、実施の形態1に係るワイヤロープ探傷装置の出力確認装置4Aと異なる。
図14は、この発明の実施の形態3に係るワイヤロープ探傷装置の出力確認装置を示す斜視図である。実施の形態3に係るワイヤロープ探傷装置の出力確認装置4Dは、配置された複数の磁気遮蔽物43のうち、並べられた方向について最も外側に位置する一対の磁気遮蔽物43の構成において、実施の形態1および実施の形態2と異なる。並べられた方向について最も外側に位置する一対の磁気遮蔽物43のそれぞれを最外磁気遮蔽物48Aとする。
Claims (14)
- パイプと、
前記パイプの内側を移動する試験体と
を備え、
前記パイプは、ワイヤロープ探傷装置がワイヤロープの損傷を検出する場合に前記ワイヤロープ探傷装置における前記ワイヤロープが移動する部分であるワイヤロープ設置部に設置され、
前記試験体は、
非磁性材料から構成された試験片ガイドと、
前記試験片ガイドに設けられ、磁性材料から構成された試験片と
を有しているワイヤロープ探傷装置の出力確認装置。 - 前記試験片ガイドは、前記試験片の側面を覆う側面被覆部を有している請求項1に記載のワイヤロープ探傷装置の出力確認装置。
- 前記試験体には、前記試験体の移動方向に延びる貫通孔が形成されている請求項1または請求項2に記載のワイヤロープ探傷装置の出力確認装置。
- 前記試験体の下端部における側面には、下方に向かうにつれて前記試験体の幅方向寸法が小さくなる傾斜面が形成されている請求項1から請求項3までの何れか一項に記載のワイヤロープ探傷装置の出力確認装置。
- 前記試験体は、前記試験片に重ねられる試験片スペーサをさらに有している請求項1から請求項4までの何れか一項に記載のワイヤロープ探傷装置の出力確認装置。
- 前記パイプの側壁には、前記試験体の移動方向に延びる切欠きが形成されている請求項1から請求項5までの何れか一項に記載のワイヤロープ探傷装置の出力確認装置。
- 前記試験体は、前記試験片ガイドから前記切欠きを通って前記パイプの外側まで延びるつまみをさらに有している請求項6に記載のワイヤロープ探傷装置の出力確認装置。
- 前記パイプの周囲に設けられ、磁性材料から構成された磁気遮蔽物をさらに備え、
前記磁気遮蔽物は、前記パイプが前記ワイヤロープ設置部に設置された場合に、前記ワイヤロープ設置部の周囲に配置される請求項1から請求項7までの何れか一項に記載のワイヤロープ探傷装置の出力確認装置。 - 間隔をおいて互いに平行に配置された複数の前記パイプのそれぞれに設けられる複数の前記試験体と、
互いに隣り合う前記パイプの間に設けられる前記磁気遮蔽物と
を備えた請求項8に記載のワイヤロープ探傷装置の出力確認装置。 - 前記磁気遮蔽物は、
磁性材料から構成された磁気遮蔽プレートと、
前記パイプが前記ワイヤロープ設置部に設置された場合に前記ワイヤロープ探傷装置と前記磁気遮蔽プレートとの間に設けられ、非磁性材料から構成されたスペーサと
を有している請求項8に記載のワイヤロープ探傷装置の出力確認装置。 - 前記磁気遮蔽物は、前記パイプが前記ワイヤロープ設置部に設置された場合に前記スペーサを前記ワイヤロープ探傷装置に向かって押す力付与部材をさらに有している請求項10に記載のワイヤロープ探傷装置の出力確認装置。
- 前記パイプに設けられた移動開始位置調整部をさらに備え、
前記試験体は、前記試験体の上面が前記移動開始位置調整部の下面に当てられた位置から移動する請求項1から請求項11までの何れか一項に記載のワイヤロープ探傷装置の出力確認装置。 - 前記移動開始位置調整部は、
前記パイプに設けられる支持部と、
前記支持部に設けられ、前記試験体の上面に当てられる移動開始位置調整部本体と
を有し、
前記移動開始位置調整部本体は、前記支持部に対する前記試験体の移動方向についての位置が変更可能となっている請求項12に記載のワイヤロープ探傷装置の出力確認装置。 - 前記パイプは、前記支持部に対して前記パイプの軸方向に移動可能となっており、
前記支持部の下面は、前記ワイヤロープ探傷装置の上面に接触される請求項13に記載のワイヤロープ探傷装置の出力確認装置。
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| KR1020207021228A KR102322952B1 (ko) | 2018-01-29 | 2019-01-25 | 와이어 로프 탐상 장치의 출력 확인 장치 |
| CN201980009575.0A CN111630377B (zh) | 2018-01-29 | 2019-01-25 | 缆绳探伤装置的输出确认装置 |
| US16/959,544 US20210072186A1 (en) | 2018-01-29 | 2019-01-25 | Output checking device for a wire rope flaw detector |
| JP2019567179A JP6781504B2 (ja) | 2018-01-29 | 2019-01-25 | ワイヤロープ探傷装置の出力確認装置 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP7351394B1 (ja) | 2022-10-25 | 2023-09-27 | フジテック株式会社 | ロープテスタ用検査装置 |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220284366A1 (en) * | 2019-08-02 | 2022-09-08 | Global Engineers Technology Pte. Ltd. | Method and system for managing a crane and/or construction site |
| KR102402753B1 (ko) * | 2021-01-20 | 2022-05-26 | 동의대학교 산학협력단 | 자분 탐상 장치 |
| DE102021205505A1 (de) * | 2021-05-31 | 2022-12-01 | Institut Dr. Foerster Gmbh & Co. Kg | Polschuh für Magnetisierungseinrichtung sowie Prüfvorrichtung |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59222757A (ja) * | 1983-06-02 | 1984-12-14 | Tokyo Electric Power Co Inc:The | 錆検出器の感度調整具 |
| JPH03106410U (ja) * | 1990-02-14 | 1991-11-01 | ||
| JPH03264862A (ja) * | 1990-03-14 | 1991-11-26 | Fujikura Ltd | 探傷装置感度校正用往復運動装置 |
| JPH08327603A (ja) * | 1995-06-02 | 1996-12-13 | Nippon Steel Corp | 鋼帯欠陥検出装置 |
| CN101694433A (zh) * | 2009-10-19 | 2010-04-14 | 陈厚桂 | 对钢丝绳探伤仪评价的钢丝绳试样及其制备方法 |
| JP2012083110A (ja) * | 2010-10-06 | 2012-04-26 | Mitsubishi Heavy Ind Ltd | 校正方法、校正用治具および管検査方法 |
| JP2012154729A (ja) * | 2011-01-25 | 2012-08-16 | Hitachi Building Systems Co Ltd | ワイヤロープ探傷装置の出力確認方法及び出力確認装置 |
| WO2017163362A1 (ja) * | 2016-03-24 | 2017-09-28 | 三菱電機株式会社 | ワイヤーロープ探傷装置およびワイヤーロープ探傷装置の調整方法 |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59195561U (ja) * | 1983-06-13 | 1984-12-26 | 東京製綱株式会社 | エレベ−タ用ロ−プ探傷装置 |
| JP2001141703A (ja) * | 1999-11-09 | 2001-05-25 | Kyosan Electric Mfg Co Ltd | ワイヤロープ探傷器 |
| JP2005154042A (ja) * | 2003-11-21 | 2005-06-16 | Toshiba Elevator Co Ltd | エレベータ用ワイヤロープ探傷装置 |
| JP4825525B2 (ja) * | 2006-02-01 | 2011-11-30 | 株式会社日立ビルシステム | ワイヤロープの探傷装置 |
| DE112007003297B4 (de) * | 2007-01-31 | 2015-05-21 | Mitsubishi Electric Corp. | Drahtseildefektdetektor |
| US8536861B2 (en) * | 2007-01-31 | 2013-09-17 | Mitsubishi Electric Corporation | Wire rope flaw detector |
| JP2009097910A (ja) * | 2007-10-15 | 2009-05-07 | Mitsubishi Electric Corp | ワイヤロープ探傷装置 |
| WO2009128127A1 (ja) * | 2008-04-14 | 2009-10-22 | 三菱電機株式会社 | ワイヤロープ探傷装置 |
| JP5006349B2 (ja) | 2009-01-08 | 2012-08-22 | 株式会社日立ビルシステム | ワイヤーロープの探傷装置の校正装置 |
| DE102009022136A1 (de) * | 2009-05-20 | 2010-11-25 | Prüftechnik Dieter Busch AG | Vorrichtung und Verfahren für induktive Messungen |
| RU96979U1 (ru) * | 2010-03-31 | 2010-08-20 | Ордена Трудового Красного Знамени Институт физики металлов Уральского отделения Российской академии наук (ИФМ УрО РАН) | Устройство для калибровки магнитных дефектоскопов |
| CN102713597B (zh) * | 2010-05-25 | 2015-11-25 | 三菱电机株式会社 | 钢丝绳探伤装置 |
| CN102998416A (zh) * | 2011-09-08 | 2013-03-27 | 中国石油天然气股份有限公司 | 一种简易油气管道牵引测试方法和装置 |
| US10613244B2 (en) * | 2014-07-11 | 2020-04-07 | Halliburton Energy Services, Inc. | Focused symmetric pipe inspection tools |
| WO2016174703A1 (ja) * | 2015-04-27 | 2016-11-03 | 三菱電機株式会社 | ワイヤロープ探傷装置 |
| CN105527339B (zh) * | 2016-03-01 | 2019-01-25 | 江南大学 | 基于复合式u型脉冲电磁传感器的无损检测方法 |
-
2019
- 2019-01-25 WO PCT/JP2019/002407 patent/WO2019146742A1/ja not_active Ceased
- 2019-01-25 CN CN201980009575.0A patent/CN111630377B/zh active Active
- 2019-01-25 JP JP2019567179A patent/JP6781504B2/ja active Active
- 2019-01-25 KR KR1020207021228A patent/KR102322952B1/ko active Active
- 2019-01-25 US US16/959,544 patent/US20210072186A1/en not_active Abandoned
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59222757A (ja) * | 1983-06-02 | 1984-12-14 | Tokyo Electric Power Co Inc:The | 錆検出器の感度調整具 |
| JPH03106410U (ja) * | 1990-02-14 | 1991-11-01 | ||
| JPH03264862A (ja) * | 1990-03-14 | 1991-11-26 | Fujikura Ltd | 探傷装置感度校正用往復運動装置 |
| JPH08327603A (ja) * | 1995-06-02 | 1996-12-13 | Nippon Steel Corp | 鋼帯欠陥検出装置 |
| CN101694433A (zh) * | 2009-10-19 | 2010-04-14 | 陈厚桂 | 对钢丝绳探伤仪评价的钢丝绳试样及其制备方法 |
| JP2012083110A (ja) * | 2010-10-06 | 2012-04-26 | Mitsubishi Heavy Ind Ltd | 校正方法、校正用治具および管検査方法 |
| JP2012154729A (ja) * | 2011-01-25 | 2012-08-16 | Hitachi Building Systems Co Ltd | ワイヤロープ探傷装置の出力確認方法及び出力確認装置 |
| WO2017163362A1 (ja) * | 2016-03-24 | 2017-09-28 | 三菱電機株式会社 | ワイヤーロープ探傷装置およびワイヤーロープ探傷装置の調整方法 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7351394B1 (ja) | 2022-10-25 | 2023-09-27 | フジテック株式会社 | ロープテスタ用検査装置 |
| JP2024062591A (ja) * | 2022-10-25 | 2024-05-10 | フジテック株式会社 | ロープテスタ用検査装置 |
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| JP6781504B2 (ja) | 2020-11-04 |
| CN111630377B (zh) | 2023-07-04 |
| KR102322952B1 (ko) | 2021-11-05 |
| KR20200098674A (ko) | 2020-08-20 |
| CN111630377A (zh) | 2020-09-04 |
| JPWO2019146742A1 (ja) | 2020-09-24 |
| US20210072186A1 (en) | 2021-03-11 |
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