EP1186565A2 - Gerät für magnetisch-induktive Kontrole von mehreren Stahlseilen - Google Patents

Gerät für magnetisch-induktive Kontrole von mehreren Stahlseilen Download PDF

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Publication number
EP1186565A2
EP1186565A2 EP01830546A EP01830546A EP1186565A2 EP 1186565 A2 EP1186565 A2 EP 1186565A2 EP 01830546 A EP01830546 A EP 01830546A EP 01830546 A EP01830546 A EP 01830546A EP 1186565 A2 EP1186565 A2 EP 1186565A2
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EP
European Patent Office
Prior art keywords
wire ropes
modulus
rollers
magnetic
plates
Prior art date
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.)
Granted
Application number
EP01830546A
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English (en)
French (fr)
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EP1186565B1 (de
EP1186565A3 (de
Inventor
Roberto Visintin
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Security Control Srl
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Security Control Srl
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Publication of EP1186565A2 publication Critical patent/EP1186565A2/de
Publication of EP1186565A3 publication Critical patent/EP1186565A3/de
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Publication of EP1186565B1 publication Critical patent/EP1186565B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B66B7/1207—Checking means
    • B66B7/1215—Checking means specially adapted for ropes or cables
    • B66B7/123—Checking means specially adapted for ropes or cables by analysing magnetic variables

Definitions

  • This invention consists in a device which allows a non-destructive testing of multiple steel wire ropes and is therefore suitable for the periodic inspection of elevator wire ropes, of goods lifts and of all the installations containing multiple steel wire ropes.
  • the non-destructive testing of steel wire ropes is a procedure adopted to check the state of the wire ropes of the installations for the public transportation of people (wire ropeways, carways, chair lifts, ski lifts, etc.) or materials (goods lifts, cranes, hoists, tackles, etc.). These periodic inspections are aimed at preventing the deterioration of wire ropes, which may be caused by many factors: breaking of the wire ropes due to fatigue or anomalous scraping, corrosion, anomalous distribution of tensions due to manufacture or assembly defects, etc.
  • Non-destructive testing systems known for many years, is based on magnetic induction. It consists in the introduction of a single wire rope in a device which exploits magnetic induction and in the sliding of this wire rope within the device itself. In case of fixed wire ropes, the device slides along the wire ropes.
  • Each device of this type consists essentially of an inductor with permanent magnets. They generate one o two circular magnetic fields which are generally tangent to the wire rope. Only the USA patent 4,495,465 describes the generation of two magnetic fields with the same axis of the wire rope to be tested.
  • the wire rope is magnetized by the magnetic field generated by the inductor. Any discontinuity of the wire rope, both internal and external, provokes perturbations in one o more magnetic fields around the wire rope, which are sensed by special measure coils. These perturbations, as a consequence of the magnetic induction principle, create an inductive electromotive force that provokes an electric power which reaches the signal power point.
  • the main purpose of this invention is to put at the user's disposal a device permitting a contemporary non-destructive testing of more steel wire ropes.
  • Each modulus has at least one magnet, at least one coil, a signal power point, two rollers and a shell which supports and/or protects these elements.
  • Each magnet develops along the wire ropes axis. When a modulus has more magnets, these are placed on one or more planes parallel to that of the wire ropes.
  • Each coil may be wrapped around one or more magnets. These coils can be substituted, in each modulus, by one single coil placed between the magnets and the steel wire ropes.
  • the lateral supports of the shell consist of two plates having an axis parallel to that of the wire ropes. These supports are fixed to an upper plate and a lower plate, both plates having their axis orthogonal to that of the wire ropes. These plates create the pole pieces.
  • the shell of each modulus contains two U-shaped plates, having their axis parallel to that of the wire ropes and constituting the fore frontal covering and the back frontal covering. The first covering delimits the sliding section of the wire ropes, the second protects the magnetic components.
  • the inductor is composed of the pole pieces and the permanent magnets. These are made of high-stability materials.
  • the inductor can be easily remagnetized.
  • the coil/coils can be replaced by one or more Hall sensors, placed between the magnets and the steel wire ropes.
  • the coil or the Hall sensor are connected to a signal power point, placed on the external part of the modulus. When more coils or Hall sensors are used, they are connected to each other in series and with the signal power point.
  • the magnets are fixed to the plates constituting the pole pieces. Specific guides and ties of these plates permit the correct positioning of the magnets.
  • each modulus On the upper and lower parts of each modulus (with reference to the direction of the wire ropes) there is a roller, orthogonal to the wire ropes axis. To each roller of a modulus corresponds a roller on the other modulus, thus creating two couples of rollers (the upper couple and the lower couple), which allows the sliding of multiple wire ropes and their positioning in the section between the two moduli, at the centre of the device.
  • roller shafts are placed in holes made on the lateral supports.
  • the holes can also be created in stirrups fixed to the supports or to the plates constituting the pole pieces.
  • the two moduli though essentially identical, are different.
  • the holes of one of them, defined as principal, have a diameter slightly bigger than that of the shafts and, consequently, no change of their position is possible.
  • to wire ropes of a certain diameter will correspond a roller with a proportional diameter, in order to keep the wire ropes at the centre of the device, between the two moduli.
  • the two shafts placed in the principal modulus can be inserted in bushings with eccentric hole, which permits the shifting of the shafts and, consequently, the shifting of the rollers along the wire ropes, so that rollers of the same diameter can be used for wire ropes of different diameters.
  • the two shafts of the secondary modulus are inserted in lengthened slits, which develop orthogonally to the multiple wire ropes axis. As these rollers do not have a fixed rotation centre, they can be drawn closer to the rollers of the principal modulus. The simultaneous contact of each couple of rollers with the wire ropes is obtained and maintained through elastic elements which are applied between the corresponding shafts, on both sides.
  • Holes or slits on lateral supports are used to insert handles or other instruments aimed at securing the device to the desired position.
  • the rollers preferably have a cylindrical shape, with a axis transversal to the wire ropes axis and can be smooth and/or grooved.
  • This device permits a correct reading, valid for all the wire ropes examined contemporarily, because it magnetizes the section of the wire ropes to be checked with a longitudinal magnetic field of such an intensity to bring steel to saturation point. As a consequence of the saturation, a magnetic flux parallel to the field of the wire ropes surrounds them.
  • the device is composed of two specular moduli 1, 2, connected through a hinge 3 and two lever locks 4.
  • Each modulus 1, 2 contains twelve permanent magnets 5 which are placed on two planes parallel to the axis of the wire ropes 6.
  • Each modulus contains six coils 7, wrapped around an equal number of magnets 5.
  • the coils 7 of each modulus 1, 2 are connected electrically between them and to a signal power point 8 fixed to the external part of the modulus 1, 2.
  • the magnets 5 of each modulus 1, 2 are protected by a shell.
  • the shell is composed of two plates 9 constituting its lateral supports, of an upper plate 10, of a lower plate 11, of a fore frontal covering 12 and of a back frontal covering 13.
  • the longitudinal axis of the lateral supports 9, of the fore frontal covering 12 and of the back frontal covering 13 is parallel to the longitudinal axis of the wire ropes 6.
  • the axis of the upper plate 10 and of the lower plate 11 is orthogonal to that of the wire ropes 6.
  • the fore frontal covering 12 and the back frontal covering 13 are U-shaped.
  • the magnets 5 are inserted in the guides of the upper plate 10 and of the lower plate 11.
  • the magnets 5 are fixed to plates 10, 11, which function as pole pieces, through draught screws 10.1.
  • the plates 10, 11, together with the permanent magnets 5, constitute the magnetic inductor.
  • the two plates constituting the lateral supports 9 and the plates constituting the fore frontal covering 12 and back frontal covering 13 are also fixed to the plates 10, 11.
  • the plates constituting the fore frontal covering 12 delimit the section of the sliding wire ropes 6.
  • the fore frontal covering 12 and the back frontal covering 13 prevent accidental contacts, respectively, of the wire ropes 6 or of the operator's hands with the magnets 5 and the coils 7, 7.1.
  • each modulus 1, 2 have a roller 14 orthogonal to the wire ropes axis 6.
  • a roller 14 of the other modulus 2 To each roller 14 of the modulus 1 corresponds a roller 14 of the other modulus 2, thus forming two couples of rollers 14 (an upper roller and a lower roller), which place the multiple wire ropes in the longitudinal section between the two moduli, at the centre of the device.
  • the shaft 14.1 of the rollers 14 of the modulus 1 are places in holes made on the lateral supports 9. These holes have a diameter which permits the insertion of the shafts 14.1 of the rollers 14, but not a translation. Consequently, they cannot be moved.
  • the shifts 14.1 of the rollers 14 of the modulus 2 are placed in lengthened slits 9.1 of the supports 9, which are orthogonal to the multiple wire ropes axis 6.
  • the rollers 14 of the modulus 2 can therefore be drawn nearer to the rollers 14 of the modulus 1 (and to the wire ropes 6) and can be held in the desired position using springs 15 or elastic rings 16 placed between the corresponding shafts 14.1.
  • This structure of the holes hosting the shafts 14.1 of the modulus 1 forces the user to substitute the rollers 14 of the modulus 1 every time the wire ropes diameter 6 changes, in order to keep the wire ropes 6 at the centre of the device, with reference to the two moduli 1, 2.
  • the holes can be replaced by bushings 17 with an eccentric hole, fixed to holes specifically made on the plates 9 of the principal modulus 1.
  • Each bushing 17 is blocked with a screw. The rotating movement of these bushings permits the moving of the shafts 14.1 inserted in the bushings 17 and, consequently, the movement of the rollers 14, in order to use rollers 14 of the same diameter, even with wire ropes 6 having different diameters.
  • holes 9.2 are made to insert handles or to block the device in the desired position.
  • Rollers 14 may be smooth (figures 1, 2, 3 and 5) or grooved (figure 14). Each groove 14.2 contains a wire rope 6. Rollers 14 may be substituted by sliding blocks, as shown in figures 12 and 13.
  • a first device consists of two blades 18, an upper blade and a lower blade, which are orthogonal to the ropes 6 and are fixed to the lateral plates 9 of modulus 1.
  • Each blade 18 has lengthened slits 18.1, which are orthogonal to the wire ropes 6.
  • Two screws 19 of the slits 18.1 fix two rods 20 to the blades 18.
  • the longitudinal axis of the rods 20, which are lateral to the wire ropes 6, is parallel to that of the wire ropes 6.
  • the rods 20 can slide, orthogonally to the wire ropes 6, towards the internal part of the device or towards the opposite direction, by simply passing the screws 19 in the slits 18.1, until the distance between the two rods 20 is slightly superior to the sum of the diameter of the ropes 6, including the spaces between one rope and the other, thus allowing their correct positioning.
  • small bars 21 are fixed to the plates 9 which constitute the sides of the modulus 1. These small bars 21 are connected to two rods 24 through two pins 22 and a regulation screw 23.
  • the longitudinal axis of the rods 24, which are lateral to the wire ropes 6, is parallel to that of the wire ropes 6, whereas the pins 22 and the regulation screws are orthogonal to the ropes.
  • the distance between the two rods 24 can be regulated, until the distance between the two rods 24 is slightly superior to the sum of the diameter of the ropes 6, including the spaces between one wire rope 6 and the other.
  • the rollers 14 of the principal modulus 1 are chosen according to the number and the diameter of the multiple wire ropes 6 to be checked. Or, if the device has the above-mentioned bushings 17, the position of the rollers along the wire ropes can be regulated.
  • the internal devices of the principal modulus 1 are then regulated through the screws 19 or 23 until the distance of the rods 20, 24 is superior to the sum of the diameters of the wire ropes 6, including the spaces between one wire rope 6 and the other.
  • the two moduli 1, 2 are then closed on the wire ropes 6, so that the wire ropes can slide through each couple of rollers 14.
  • the two moduli 1, 2 are later fixed to each other through lever locks 4.
  • the rollers 14 of the other modulus 2 are then drawn closer to the wire ropes 6, sliding their shafts 14.1 in the slits 9.1; the simultaneous contact between the rollers 14 of the modulus 1, the wire ropes 6 and the rollers 14 of the modulus 2 is assured through springs 15 or through the elastic springs 16 placed between the corresponding shafts 14.1, on both sides.
  • the device is then fixed in a correct position through fixing elements acting on the holes 9.2.
  • any internal or external discontinuity of the moving wire ropes 6 provokes perturbations of the magnetic field generated by the inductor around the wire ropes 6.
  • the longitudinal axis of the magnetic field is parallel to that of the wire ropes 6.
  • the perturbations create an inducted electromotive force generating an electric power which reaches the signal power points 8.
  • the power is then transferred, through cables, to an analogic recorder, which is separated from the device and is able to amplify the electric power and to print on paper the state of the wire ropes 6.
  • the reading of the diagram allows to identify any anomaly of the wire ropes 6, both internal and external.

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  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
EP01830546A 2000-08-22 2001-08-21 Gerät für magnetisch-induktive Kontrole von mehreren Stahlseilen Expired - Lifetime EP1186565B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2000TS000006A ITTS20000006A1 (it) 2000-08-22 2000-08-22 Dispositivo magneto-induttivo per il controllo delle funi multiple d'acciaio
ITTS000006 2000-08-22

Publications (3)

Publication Number Publication Date
EP1186565A2 true EP1186565A2 (de) 2002-03-13
EP1186565A3 EP1186565A3 (de) 2002-10-30
EP1186565B1 EP1186565B1 (de) 2003-12-10

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ID=11459656

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01830546A Expired - Lifetime EP1186565B1 (de) 2000-08-22 2001-08-21 Gerät für magnetisch-induktive Kontrole von mehreren Stahlseilen

Country Status (4)

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EP (1) EP1186565B1 (de)
AT (1) ATE256075T1 (de)
DE (1) DE60101435D1 (de)
IT (1) ITTS20000006A1 (de)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1847501A2 (de) * 2006-04-18 2007-10-24 Inventio Ag Aufzugsanlage mit einer Tragmittelüberwachungseinrichtung zur Überwachung des Zustandes des Tragmittels und Verfahren zur Prüfung des Tragmittels
EP1914186A1 (de) * 2006-10-18 2008-04-23 ThyssenKrupp Aufzugswerke GmbH Verfahren und Vorrichtung zur Tragmittelprüfung von Hebezeugen
CN103449280A (zh) * 2012-05-30 2013-12-18 东芝电梯株式会社 电梯的绳清扫工具
JP2015166697A (ja) * 2014-03-04 2015-09-24 三菱電機株式会社 ロープ探傷装置
WO2015166533A1 (ja) * 2014-04-28 2015-11-05 東京製綱株式会社 ワイヤロープの検査装置
WO2017029977A1 (ja) * 2015-08-19 2017-02-23 三菱電機株式会社 ワイヤロープ探傷装置及び調整治具
JP2019018943A (ja) * 2017-07-12 2019-02-07 三菱電機ビルテクノサービス株式会社 エレベーターのロープ外れ防止治具及びエレベーターのロープ取替方法
CN110944923A (zh) * 2017-07-17 2020-03-31 蒂森克虏伯电梯股份公司 电梯带位置跟踪系统
CN112147212A (zh) * 2020-09-21 2020-12-29 淮南泰隆机械制造有限公司 钢绞线断丝固定监测装置
JP2022500663A (ja) * 2018-09-20 2022-01-04 江▲蘇▼多▲維▼科技有限公司Multidimension Technology Co., Ltd. 鋼線ロープの損傷を検出する非破壊検査装置
CN114084767A (zh) * 2021-11-18 2022-02-25 浙江大学 基于钢丝绳卸载和变阻力减震结构的电梯缓冲监测装置
CN114084766A (zh) * 2021-11-18 2022-02-25 浙江大学 一种用于钢丝绳的卸载和变阻力减震结构

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4427940A (en) * 1980-04-21 1984-01-24 Hitachi Elevator Engineering And Service Co., Ltd. Electromagnetic inspecting apparatus for magnetizable wire rope
US5828213A (en) * 1996-10-21 1998-10-27 Hickman; Jack R. Method and apparatus for magnetically sampling the uniformity of an elongate object

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4427940A (en) * 1980-04-21 1984-01-24 Hitachi Elevator Engineering And Service Co., Ltd. Electromagnetic inspecting apparatus for magnetizable wire rope
US5828213A (en) * 1996-10-21 1998-10-27 Hickman; Jack R. Method and apparatus for magnetically sampling the uniformity of an elongate object

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1847501A3 (de) * 2006-04-18 2012-05-02 Inventio AG Aufzugsanlage mit einer Tragmittelüberwachungseinrichtung zur Überwachung des Zustandes des Tragmittels und Verfahren zur Prüfung des Tragmittels
EP1847501A2 (de) * 2006-04-18 2007-10-24 Inventio Ag Aufzugsanlage mit einer Tragmittelüberwachungseinrichtung zur Überwachung des Zustandes des Tragmittels und Verfahren zur Prüfung des Tragmittels
EP1914186A1 (de) * 2006-10-18 2008-04-23 ThyssenKrupp Aufzugswerke GmbH Verfahren und Vorrichtung zur Tragmittelprüfung von Hebezeugen
CN103449280A (zh) * 2012-05-30 2013-12-18 东芝电梯株式会社 电梯的绳清扫工具
CN103449280B (zh) * 2012-05-30 2016-06-15 东芝电梯株式会社 电梯的绳清扫工具
JP2015166697A (ja) * 2014-03-04 2015-09-24 三菱電機株式会社 ロープ探傷装置
WO2015166533A1 (ja) * 2014-04-28 2015-11-05 東京製綱株式会社 ワイヤロープの検査装置
JPWO2015166533A1 (ja) * 2014-04-28 2017-04-20 東京製綱株式会社 ワイヤロープの検査装置
US10222351B2 (en) 2014-04-28 2019-03-05 Tokyo Rope Manufacturing Co., Ltd. Wire rope inspection apparatus
US10539533B2 (en) 2015-08-19 2020-01-21 Mitsubishi Electric Corporation Wire rope flaw detection device and adjustment jig
WO2017029977A1 (ja) * 2015-08-19 2017-02-23 三菱電機株式会社 ワイヤロープ探傷装置及び調整治具
JPWO2017029977A1 (ja) * 2015-08-19 2017-11-16 三菱電機株式会社 ワイヤロープ探傷装置及び調整治具
JP2019018943A (ja) * 2017-07-12 2019-02-07 三菱電機ビルテクノサービス株式会社 エレベーターのロープ外れ防止治具及びエレベーターのロープ取替方法
CN110944923A (zh) * 2017-07-17 2020-03-31 蒂森克虏伯电梯股份公司 电梯带位置跟踪系统
JP2022500663A (ja) * 2018-09-20 2022-01-04 江▲蘇▼多▲維▼科技有限公司Multidimension Technology Co., Ltd. 鋼線ロープの損傷を検出する非破壊検査装置
CN112147212A (zh) * 2020-09-21 2020-12-29 淮南泰隆机械制造有限公司 钢绞线断丝固定监测装置
CN114084767A (zh) * 2021-11-18 2022-02-25 浙江大学 基于钢丝绳卸载和变阻力减震结构的电梯缓冲监测装置
CN114084766A (zh) * 2021-11-18 2022-02-25 浙江大学 一种用于钢丝绳的卸载和变阻力减震结构
CN114084767B (zh) * 2021-11-18 2022-09-13 浙江大学 基于钢丝绳卸载和变阻力减震结构的电梯缓冲监测装置
CN114084766B (zh) * 2021-11-18 2022-09-20 浙江大学 一种用于钢丝绳的卸载和变阻力减震结构

Also Published As

Publication number Publication date
DE60101435D1 (de) 2004-01-22
ITTS20000006A1 (it) 2002-02-22
ITTS20000006A0 (it) 2000-08-22
ATE256075T1 (de) 2003-12-15
EP1186565B1 (de) 2003-12-10
EP1186565A3 (de) 2002-10-30

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