WO2009128127A1 - ワイヤロープ探傷装置 - Google Patents
ワイヤロープ探傷装置 Download PDFInfo
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- WO2009128127A1 WO2009128127A1 PCT/JP2008/057256 JP2008057256W WO2009128127A1 WO 2009128127 A1 WO2009128127 A1 WO 2009128127A1 JP 2008057256 W JP2008057256 W JP 2008057256W WO 2009128127 A1 WO2009128127 A1 WO 2009128127A1
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- wire rope
- magnetic path
- path member
- flaw detector
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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
- 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
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- the present invention relates to a wire rope flaw detector that detects breakage of a wire rope that suspends a passenger car such as an elevator or breakage of an element wire (hereinafter referred to as a damaged portion of a wire rope).
- a conventional wire rope flaw detector is disposed between an exciting iron core having at least two magnetic poles disposed in close proximity to the wire rope, an exciting permanent magnet embedded in the exciting iron core, and the two magnetic poles. It comprised the detection coil (for example, refer patent document 1).
- the magnetic flux is magnetically saturated by two magnetic poles to generate a leakage magnetic flux from a damaged part such as a broken wire, and this is detected by a detection coil to detect the damaged part of the wire rope. Detect.
- the wire rope flaw detector described in Patent Document 1 requires that the wire rope move relatively. Relative movement causes leakage magnetic flux to move with respect to the detection coil, and the amount of leakage magnetic flux interlinked with the detection coil changes with time, so that an induced voltage is generated at the detection coil terminal and a damaged portion of the wire rope can be detected. . Since the induced voltage is proportional to the speed of relative movement, the SN ratio of the damage detection signal improves as the relative speed increases. With the advent of such a flaw detector, the work time of the inspection worker has been greatly reduced as compared with the conventional visual inspection alone, but the following problems remain.
- the worker who confirmed the damage signal during the inspection temporarily stops the wire rope or wire rope flaw detector in order to confirm the position and degree of damage. It leaves the rope flaw detector.
- a relatively small damage such as a broken wire without staring at the vicinity thereof due to the influence of lubricating grease attached to the surface of the wire rope. Therefore, if the damaged portion is separated from the wire rope flaw detector, the operator loses the mark and cannot visually check the damaged portion. In such a case, the operator moves the wire rope or the wire rope flaw detector at a lower speed than before and searches again for the vicinity of the damaged portion.
- the relative speed becomes lower than the above measurement principle, the SN ratio of the damage detection signal is Therefore, there is a problem that the damage may be lost depending on the degree of damage.
- Patent Document 2 there is a method using an AC power source for excitation in the wire rope.
- the wire rope and the wire rope flaw detector need not move relative to each other.
- the wire rope flaw detector is larger than the permanent magnet excitation.
- the magnetic flux concentrates on the surface of the wire rope due to the skin effect, so that there is a problem that damage inside the wire rope cannot be detected.
- the present invention has been made to solve the above-described problems, and its object is to obtain a damage detection signal even when the relative speed between the wire rope and the wire rope flaw detector is small or the relative speed is zero. It is possible to obtain a wire rope flaw detector that can suppress the increase in size of the device and can detect damage inside the wire rope with high accuracy.
- the wire rope flaw detector includes a magnetizer that forms a main magnetic flux in a predetermined section in the axial direction of the wire rope, and a damage detection unit that detects a damaged section in the predetermined section of the wire rope, and the damage detection
- the part is composed of a detection coil for detecting leakage magnetic flux generated from the damaged part, an excitation coil connected to an excitation power source, and a ferromagnetic material, and a magnetic path around which the detection coil and the excitation coil are wound
- the magnetic flux generated by energizing the exciting coil changes the linkage amount of the leakage magnetic flux to the detecting coil, thereby generating an induced voltage in the detecting coil to detect the damaged portion.
- the wire rope flaw detector according to the present invention can magnetically block a part of the bypass magnetic path by magnetically saturating the loop magnetic path with the exciting coil. That is, the permeance of the bypass magnetic path can be changed from a high state to a low state in a short time.
- the leakage magnetic flux does not pass through the bypass magnetic path, that is, when the wire rope is not broken, the induced voltage generated in the detection coil due to the change in the permeance of the bypass magnetic path is very small, but the leakage magnetic flux passes through the bypass magnetic path.
- the amount of magnetic flux in the bypass magnetic path changes greatly due to the change in permeance of the bypass magnetic path, so that a large induced voltage is generated in the detection coil, and the wire rope and wire rope Even when the relative speed between the flaw detection devices is zero, the disconnection can be detected.
- the excitation coil is irrelevant to the main magnetic flux formation, and a permanent magnet can be used for the main magnetic flux formation. Therefore, the excitation target of the excitation coil is limited to the loop magnetic path in the vicinity of the bypass magnetic path. The number of ampere turns is small, and the magnetizer does not increase in size. Further, since the main magnetic flux does not become an alternating magnetic flux, the skin effect can be avoided, and the damage inside the wire rope can be detected with high accuracy.
- FIGS. 1 is a perspective view showing an appearance of a wire rope flaw detector according to Embodiment 1 of the present invention.
- the same reference numerals indicate the same or corresponding parts.
- FIG. 1 a wire rope 1 and a wire rope flaw detector 2 are depicted. Further, the back yoke 3, the exciting permanent magnet 4b, and the protective plate 6 are drawn.
- FIG. 2 is a perspective view showing an appearance when the protection plate of the wire rope flaw detector shown in FIG. 1 is removed.
- the back yoke 3 the permanent magnets 4a and 4b for excitation, the support base 5, the protective plate 6 removed from the wire rope flaw detector, the magnetic path member 7, the detection coil 8, and the excitation coil 9 Is drawn.
- the magnetizer of the wire rope flaw detector 2 is for forming a main magnetic path in a predetermined section in the axial direction of the wire rope 1, and includes a back yoke 3 made of a ferromagnetic material such as iron and the like.
- the back yoke 3 is composed of a pair of exciting permanent magnets 4a and 4b disposed on both ends of the back yoke 3 with their polarities reversed.
- FIG. 3 is a view showing a cross section of the wire rope flaw detector as viewed from the line A-A ′ of FIG.
- FIG. 3 is a cross-sectional view taken along a plane including the central axis of the wire rope 1 and shows the flow of magnetic flux in the vicinity of the damaged portion of the wire rope.
- (A) depicts the case where no current is flowing through the exciting coil
- (b) depicts the case where a current is flowing through the exciting coil.
- the wire rope 1, the back yoke 3, the exciting permanent magnets 4a and 4b, the support base 5, the magnetic path member 7, the detection coil 8, the exciting coil 9, the damaged part 10, the exciting part A power source 11, a main magnetic flux 12, a leakage magnetic flux 13, and an exciting current magnetic flux 14 are depicted.
- the damage detection unit of the wire rope flaw detector 2 includes a magnetic path member 7, a detection coil 8, an excitation coil 9, and an excitation power supply 11.
- FIG. 4 is an enlarged view of the cross section of the magnetic path member of FIG.
- a magnetic path member 7 composed of a bypass magnetic path member 7x and a loop magnetic path member 7y, a detection coil 8, an excitation coil 9, an excitation power source 11, and a bypass magnetic path member 7x are formed.
- the bypass magnetic path 15, the loop magnetic path 16 formed in the loop magnetic path member 7y, and the common part 22 of the bypass magnetic path member 7x and the loop magnetic path member 7y are drawn.
- the wire rope flaw detector 2 forms a main magnetic path in a predetermined axial direction of the wire rope 1 by a magnetizer. Further, the leakage magnetic flux 13 generated from the damaged portion 10 of the wire rope 1 is diverted to the outside of the wire rope 1 through the magnetic path member 7, and the leakage magnetic flux 13 is wound around the detour magnetic path member 7 x of the magnetic path member 7.
- the detection coil 8 is used for detection.
- FIG. 4 is an enlarged view of the cross section of the magnetic path member 7 in FIG. 3 as described above, but the magnetic path member 7 includes the loop magnetic path 16 in addition to the bypass magnetic path 15 that bypasses the leakage magnetic flux.
- An excitation coil 9 is wound around the loop magnetic path member 7y forming the loop magnetic path 16, and when the excitation coil 9 is energized, magnetic saturation occurs in the loop magnetic path member 7y and the permeability decreases. A part of the bypass magnetic path 15 is magnetically interrupted. For this reason, the amount of leakage magnetic flux interlinked with the detection coil 8 is reduced, and an induced voltage is generated in the detection coil 8.
- the change of the leakage magnetic flux amount linked to the detection coil 8 can be generated by the temporal change of the exciting coil current, a relative speed is required between the wire rope 1 and the wire rope flaw detector 2. Even when the relative speed is low, the damaged portion 10 generated in the wire rope 1 can be detected with high accuracy.
- the surfaces of the exciting permanent magnets 4 a and 4 b that face the wire rope 1 are approximately R with an allowance added to the outer diameter of the wire rope 1 and the thickness of the protective plate 6.
- a U-shaped surface is formed. This is because the air gap (including the protective plate 6) between the exciting permanent magnets 4a and 4b and the wire rope 1 is minimized to effectively magnetically saturate the wire rope 1 within a predetermined section. is there.
- FIG. 5 is a perspective view showing an appearance when the protection plate of the wire rope flaw detector shown in FIG. 1 is removed.
- the exciting permanent magnet 4a may be composed of a rectangular wire rope exciting main magnet 17a, rectangular wire rope exciting sub-magnets 18a and 18b, and a magnetic pole piece 19a made of a ferromagnetic material.
- the exciting permanent magnet 4b includes a rectangular parallelepiped wire rope exciting main magnet 17b, rectangular wire rope exciting sub-magnets 18c and 18d, and a magnetic pole piece 19b made of a ferromagnetic material. Also good. Thereby, since most of permanent magnet shapes become a rectangular parallelepiped, processing cost can be reduced.
- the magnetic path member 7 is made of a ferromagnetic material, and a detour magnetic path member 7x that detours the leakage magnetic flux 13 generated by the damaged portion 10 of the wire rope 1 toward the outside of the wire rope 1, and the detour magnetic path.
- a part of the member 7x and a loop magnetic path member 7y that forms a closed loop magnetic path by itself is formed, and is disposed between the pair of permanent magnets 4a and 4b and directly below the protective plate 6.
- the cross section when the magnetic path member 7 is cut along a plane including the central axis of the wire rope 1 is such that the detour magnetic path member 7x is substantially U-shaped or substantially C-shaped, as shown in FIGS. It has a shape, and its opening is arranged so as to face the wire rope 1 side.
- a detection coil 8 is wound around the bypass magnetic path member 7x, and an excitation coil 9 is wound around the loop magnetic path member 7y. Yes.
- the detour magnetic path member 7x detours to the outside of the wire rope 1 in a substantially U-shape or a substantially C-shape, thereby extending the magnetic path length of the leakage magnetic flux 13 and increasing the winding space of the detection coil 8.
- the number of detection coil turns can be increased, the induced voltage generated in the detection coil 8 at the time of detection of the damaged portion 10 is increased, and the SN ratio of the detection signal of the damaged portion 10 is improved.
- FIG. 6 is a view showing a cross section of the wire rope flaw detector according to Embodiment 1 of the present invention.
- the cross section when the magnetic path member 7 is cut along a plane orthogonal to the central axis of the wire rope 1 is substantially U-shaped as shown by the hatched portion in FIG. This is a treatment for expanding the range that can be inspected by one measurement in the circumferential direction as much as possible.
- FIG. 7 is an enlarged view of a cross section of another magnetic path member of the wire rope flaw detector according to Embodiment 1 of the present invention.
- the loop magnetic path member 7y includes a part of the detour magnetic path member 7x, the loop magnetic path member 7y is arranged in the wire rope axial direction as shown in FIG. 4 or arranged in the wire rope radial direction as shown in FIG. Also good.
- the U-shaped end of the wire rope flaw detector 2 is determined from the gap dimension 20 between adjacent wire ropes. If the width 21 is large, the wire rope flaw detector 2 cannot be inserted between the wire ropes 1. Therefore, although the U-shaped end thickness 21 needs to be suppressed, the wire rope radial arrangement of the loop bypass magnetic path member 7y as shown in FIG. 7 increases the U-shaped end thickness 21, and therefore the wire rope shaft shown in FIG. Orientation is more advantageous.
- FIG. 3 shows the flow of magnetic flux passing through the magnetic path member 7.
- Leakage magnetic flux leaking from the wire rope 1 when the damaged portion 10 of the wire rope 1 is located near the opening of the magnetic path member 7 and no current flows through the exciting coil 9 as shown in FIG. 13 flows into one end of a bypass magnetic path member (C-type magnetic path member) 7x, which is a ferromagnetic material, and is linked to the detection coil 8 wound around the bypass magnetic path member 7x. Return to the wire rope rope 1 from the other end.
- C-type magnetic path member 7x which is a ferromagnetic material
- the induced voltage of the detection coil 8 is proportional to the amount of change per unit time in the magnetic flux interlinking with the detection coil 8, so that the excitation coil 9 operates in the opposite direction, that is, the current is cut off from the current flowing state. Even when the amount of leakage magnetic flux passing through the detour magnetic path 15 rapidly increases, an induced voltage having the opposite polarity to that described above is generated in the detection coil 8.
- the leakage magnetic flux 13 passes through the bypass magnetic path 15 only during the time when the damaged portion 10 passes through the vicinity of the opening of the bypass magnetic path member 7x.
- the exciting coil 9 is AC-excited at a sufficiently fast cycle, damage can be detected in the same manner as when stationary. Furthermore, if there is a sufficiently large relative speed, disconnection can also be detected by speed electromotive force as in the conventional method if no exciting current is passed.
- the excitation power supply 11 is represented by a current source and a switch. However, this portion may be an AC power supply or a combination of a DC power supply and a semiconductor switching element.
- FIG. 9 is a diagram showing a partial configuration of a wire rope flaw detector according to Embodiment 2 of the present invention.
- FIG. 9 is a view showing a cross section of the wire rope flaw detector according to Example 2 as seen from the line A-A ′ of FIG. 1, as in FIG.
- FIG. 9 is a cross-sectional view taken along a plane including the central axis of the wire rope 1 and shows the flow of magnetic flux near the damaged portion of the wire rope.
- (A) depicts the case where no current is flowing through the exciting coil
- (b) depicts the case where a current is flowing through the exciting coil.
- FIG. 10 is an enlarged view of the cross section of the magnetic path member of FIG.
- a magnetic path member 7 composed of a bypass magnetic path member 7xa and a bypass magnetic path member 7xb, a detection coil 8, excitation coils 9a and 9b, excitation power supplies 11a and 11b, a bypass magnetic path member 7xa, Detour magnetic paths 15a and 15b formed in 7xb are depicted.
- the magnetic path member 7 of Example 2 has a substantially ⁇ -shaped or substantially E-shaped cross section, and has two bypass magnetic paths 15a and 15b for the leakage magnetic flux 13, as shown in the enlarged view of FIG.
- the effect that the cross-sectional shape is substantially ⁇ -shaped or substantially E-shaped is the same as the effect that the cross-section of the bypass magnetic path member 7x of the magnetic path member 7 of the first embodiment is substantially U-shaped or substantially C-shaped.
- the state when the magnetic path member 7 is cut in a cross section perpendicular to the wire rope axial direction looks like FIG.
- the leakage magnetic flux 13 as shown in FIG. Flows through the detour magnetic path 15a or 15b.
- the exciting coils 9a and 9b are energized, the magnetic flux 14 caused by the exciting current flows through the outer peripheral portion of the magnetic path member 7 as shown in FIG. 9B.
- the number of ampere turns of the exciting coils 9a and 9b is adjusted in advance so that the outer peripheral portion of the magnetic path member 7 is sufficiently saturated and the magnetic fluxes linked to the detection coil 8 cancel each other and become zero.
- the detection coil 8 also changes when the amount of leakage magnetic flux passing through the detour magnetic paths 15a and 15b increases rapidly from the state where the excitation current flows to the state where it does not flow. In this case, an induced voltage having the opposite polarity to the above is generated. Further, when there is no damage, no induced voltage is generated in the detection coil 8 regardless of whether or not the currents of the exciting coils 9a and 9b flow.
- the advantage of the second embodiment is that it has two bypass magnetic paths 15a and 15b. It is assumed that when the damaged portion 10 existing on the wire rope 1 is in the vicinity of the opening of the bypass magnetic path member 7xa, an induced voltage having a phase shifted by ⁇ ° with respect to the excitation current is generated in the detection coil 8. Next, when the damaged portion 10 is moved a certain distance to the opening of the detour magnetic path member 7xb, the polarity of the leakage magnetic flux passing through the detection coil 8 is reversed, so that the induced voltage generated by the detection coil 8 has a phase relative to the excitation current. Is generated by a shift of ( ⁇ + 180) °.
- the wire rope flaw detector 2 if the wire rope 1 and the wire rope flaw detector 2 are in a certain positional relationship and an induced voltage is generated in the detection coil 8, if the cause is damage, the wire rope flaw detector 2 is shifted from the positional relationship by a certain distance. Thus, the induced voltage whose phase is inverted can be confirmed. However, if the cause of occurrence is other noise (such as noise due to vibration of the wire rope 1), such induced voltage cannot be confirmed, so that the detection reliability of the damaged portion 10 can be improved.
- other noise such as noise due to vibration of the wire rope 1
- the magnetic path member 7 used in the second embodiment can be manufactured by bonding four magnetic bodies 7 1 , 7 2 , 7 3 , and 7 4 having the same shape. Can be standardized and contributes to the reduction of manufacturing costs.
- FIG. 12 is a diagram showing a partial configuration of a wire rope flaw detector according to Embodiment 3 of the present invention.
- FIG. 12 is a view showing a cross section of the wire rope flaw detector according to Example 3 as seen from the line A-A ′ of FIG. 1, as in FIG. FIG. 12 is a cross-sectional view taken along a plane including the central axis of the wire rope 1 and shows the flow of magnetic flux in the vicinity of the damaged portion of the wire rope.
- (A) depicts the case where no current is flowing through the exciting coil
- (b) depicts the case where a current is flowing through the exciting coil.
- the damaged part 10 the excitation power supplies 11a and 11b, the main magnetic flux 12, the leakage magnetic flux 13, and the excitation current magnetic fluxes 14a and 14b are drawn.
- FIG. 13 is an enlarged view of the cross section of the magnetic path member of FIG.
- magnetic path members 7a and 7b, detection coils 8a and 8b, excitation coils 9a and 9b, excitation power supplies 11a and 11b, and detour magnetic paths 15a and 15b are depicted.
- the magnetic path member of the third embodiment is composed of two magnetic path members 7a and 7b having a substantially U-shaped or substantially C-shaped cross section, and there is no common part of the two bypass magnetic path members.
- the effect of the cross-sectional shape of the magnetic path members 7a and 7b being substantially U-shaped or substantially C-shaped is the same as in the first embodiment.
- detection coils 8 a and 8 b and excitation coils 9 a and 9 b are wound around the magnetic path members 7 a and 7 b, respectively.
- the detection coils 8 a and 8 b are wound with respect to the wire rope 1.
- the direction of rotation is the same (when viewed from the side of the wire rope 1, it is standardized to be clockwise or counterclockwise), and one winding start terminal and the other winding end terminal are connected in series.
- an exciting current is passed, magnetic fluxes 14a and 14b due to the exciting current flow independently in detour magnetic paths 15a and 15b formed in the respective magnetic path members 7a and 7b, but induced voltages generated in the detection coils 8a and 8b are generated. If the number of ampere turns of the exciting current is adjusted in advance so as to cancel each other and become zero, the same function as in the second embodiment can be obtained.
- the magnetic path members 7a 1 , 7a 2 , 7b 1 , 7b 2 can be manufactured by combining the coil standardized assemblies 7a, 7b. Standardization can be achieved, contributing to a reduction in manufacturing costs.
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Abstract
Description
Claims (12)
- ワイヤロープの軸方向の所定区間に主磁束を形成する磁化器と、
前記ワイヤロープの所定区間における損傷部を検出する損傷検出部とを備え、
前記損傷検出部は、
前記損傷部より発生する漏洩磁束を検出する検出コイルと、
励磁電源に接続された励磁コイルと、
強磁性体から構成され、前記検出コイル及び前記励磁コイルが巻回されている磁路部材とを有し、
前記励磁コイルへの通電により発生した磁束が、前記検出コイルへの漏洩磁束の鎖交量を変化させることにより、前記検出コイルに誘起電圧を発生させて前記損傷部を検出する
ワイヤロープ探傷装置。 - 前記磁路部材は、
前記検出コイルが巻回されている迂回磁路部材と、
前記迂回磁路部材と共通部分を共有し、前記励磁コイルが巻回されているループ磁路部材とから構成される
請求項1記載のワイヤロープ探傷装置。 - 前記迂回磁路部材は、
前記ワイヤロープの中心軸を内包する平面で切断したときの断面が、略コの字ないし略Cの字形状であり、
略コの字ないし略Cの字形状の開口部が、前記ワイヤロープ側を向くように配設された
請求項2記載のワイヤロープ探傷装置。 - 前記磁路部材は、
前記ワイヤロープの中心軸に直交する平面で切断したときの断面が、前記ワイヤロープの周方向を取り囲むように、略U字形状である
請求項3記載のワイヤロープ探傷装置。 - 前記ループ磁路部材に形成されるループ磁路は、ワイヤロープの軸方向に前記迂回磁路部材に形成される迂回磁路に結合している
請求項4記載のワイヤロープ探傷装置。 - 前記ループ磁路部材に形成されるループ磁路は、ワイヤロープの径方向に前記迂回磁路部材に形成される迂回磁路に結合している
請求項4記載のワイヤロープ探傷装置。 - 前記磁路部材は、
第1の励磁電源に接続された第1の励磁コイルが巻回され第1の迂回磁路が形成される第1の迂回磁路部材と、
前記第1の迂回磁路部材と共通部分を共有し、第2の励磁電源に接続された第2の励磁コイルが巻回され第2の迂回磁路が形成される第2の迂回磁路部材とから構成され、
前記第1及び第2の迂回磁路は、ワイヤロープの軸方向に結合し、前記共通部分に関して磁気的に対称な形状であり、
前記共通部分に前記検出コイルが巻回されている
請求項1記載のワイヤロープ探傷装置。 - 前記磁路部材は、
前記ワイヤロープの中心軸を内包する平面で切断したときの断面が、略ωの字ないし略Eの字形状であり、
略ωの字ないし略Eの字形状の開口部が、前記ワイヤロープ側を向くように配設された
請求項7記載のワイヤロープ探傷装置。 - 前記磁路部材は、
前記ワイヤロープの中心軸に直交する平面で切断したときの断面が、前記ワイヤロープの周方向を取り囲むように、略U字形状である
請求項8記載のワイヤロープ探傷装置。 - 前記磁路部材は、
第1の励磁電源に接続された第1の励磁コイルが巻回されているとともに、第1の検出コイルが巻回されている第1の磁路部材と、
第2の励磁電源に接続された第2の励磁コイルが巻回されているとともに、第2の検出コイルが巻回されている第2の磁路部材とから構成され、
前記第1及び第2の磁路部材は、磁気的に絶縁され、ワイヤロープの軸方向に配置され、
前記第1及び第2の検出コイルが直列接続されている
請求項1記載のワイヤロープ探傷装置。 - 前記第1及び第2の磁路部材は、
前記ワイヤロープの中心軸を内包する平面で切断したときの断面が、それぞれ略コの字ないし略Cの字形状であり、
略コの字ないし略Cの字形状の開口部が、前記ワイヤロープ側を向くように配設された
請求項10記載のワイヤロープ探傷装置。 - 前記磁路部材は、
前記ワイヤロープの中心軸に直交する平面で切断したときの断面が、前記ワイヤロープの周方向を取り囲むように、略U字形状である
請求項11記載のワイヤロープ探傷装置。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
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JP2010508043A JP5127919B2 (ja) | 2008-04-14 | 2008-04-14 | ワイヤロープ探傷装置 |
KR1020107018586A KR101263550B1 (ko) | 2008-04-14 | 2008-04-14 | 와이어 로프 탐상 장치 |
DE112008003813.9T DE112008003813B4 (de) | 2008-04-14 | 2008-04-14 | Drahtseilfehlererfasser |
US12/866,847 US8390281B2 (en) | 2008-04-14 | 2008-04-14 | Wire rope flaw detector for increasing accuracy independent of speed while conserving detector size |
PCT/JP2008/057256 WO2009128127A1 (ja) | 2008-04-14 | 2008-04-14 | ワイヤロープ探傷装置 |
CN2008801281490A CN101978261B (zh) | 2008-04-14 | 2008-04-14 | 钢缆探伤装置 |
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PCT/JP2008/057256 WO2009128127A1 (ja) | 2008-04-14 | 2008-04-14 | ワイヤロープ探傷装置 |
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WO2009128127A1 true WO2009128127A1 (ja) | 2009-10-22 |
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US (1) | US8390281B2 (ja) |
JP (1) | JP5127919B2 (ja) |
KR (1) | KR101263550B1 (ja) |
CN (1) | CN101978261B (ja) |
DE (1) | DE112008003813B4 (ja) |
WO (1) | WO2009128127A1 (ja) |
Cited By (5)
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Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
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CN104792859A (zh) * | 2015-04-29 | 2015-07-22 | 华中科技大学 | 一种适用于线型缺陷的磁轭式局部微磁化检测装置 |
CN104792859B (zh) * | 2015-04-29 | 2017-06-16 | 华中科技大学 | 一种适用于线型缺陷的磁轭式局部微磁化检测装置 |
KR20180059874A (ko) * | 2015-11-02 | 2018-06-05 | 미쓰비시덴키 가부시키가이샤 | 와이어 로프 탐상 장치 |
KR102064148B1 (ko) * | 2015-11-02 | 2020-01-08 | 미쓰비시덴키 가부시키가이샤 | 와이어 로프 탐상 장치 |
KR20180115747A (ko) * | 2016-03-24 | 2018-10-23 | 미쓰비시덴키 가부시키가이샤 | 와이어 로프 탐상 장치 및 와이어 로프 탐상 장치의 조정 방법 |
KR102177903B1 (ko) * | 2016-03-24 | 2020-11-12 | 미쓰비시덴키 가부시키가이샤 | 와이어 로프 탐상 장치 및 와이어 로프 탐상 장치의 조정 방법 |
CN105866238A (zh) * | 2016-05-20 | 2016-08-17 | 云南电网有限责任公司电力科学研究院 | 一种高温超导带材检测系统 |
CN105866238B (zh) * | 2016-05-20 | 2023-06-09 | 云南电网有限责任公司电力科学研究院 | 一种高温超导带材检测系统 |
CN114252505A (zh) * | 2021-12-28 | 2022-03-29 | 中国矿业大学(北京) | 一种半侧励磁半侧检测式的钢丝绳探伤仪 |
CN114252505B (zh) * | 2021-12-28 | 2023-09-19 | 中国矿业大学(北京) | 一种半侧励磁半侧检测式的钢丝绳探伤仪 |
Also Published As
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JPWO2009128127A1 (ja) | 2011-08-04 |
JP5127919B2 (ja) | 2013-01-23 |
US8390281B2 (en) | 2013-03-05 |
CN101978261A (zh) | 2011-02-16 |
KR20100102731A (ko) | 2010-09-24 |
CN101978261B (zh) | 2012-06-13 |
DE112008003813T5 (de) | 2011-03-17 |
KR101263550B1 (ko) | 2013-05-13 |
US20110006762A1 (en) | 2011-01-13 |
DE112008003813B4 (de) | 2018-12-06 |
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