WO2000058706A3 - Method and apparatus for detecting elevator rope degradation using electrical or magnetic energy - Google Patents

Method and apparatus for detecting elevator rope degradation using electrical or magnetic energy Download PDF

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Publication number
WO2000058706A3
WO2000058706A3 PCT/US2000/007279 US0007279W WO0058706A3 WO 2000058706 A3 WO2000058706 A3 WO 2000058706A3 US 0007279 W US0007279 W US 0007279W WO 0058706 A3 WO0058706 A3 WO 0058706A3
Authority
WO
WIPO (PCT)
Prior art keywords
tension members
elevator rope
defects
electrical
magnetic energy
Prior art date
Application number
PCT/US2000/007279
Other languages
French (fr)
Other versions
WO2000058706A2 (en
Inventor
Terry M Robar
William A Veronesi
Paul A Stucky
Jack F Gieras
Original Assignee
Otis Elevator Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Otis Elevator Co filed Critical Otis Elevator Co
Priority to EP00921406.5A priority Critical patent/EP1173740B1/en
Priority to ES00921406.5T priority patent/ES2635266T3/en
Priority to BR0009371-8A priority patent/BR0009371A/en
Priority to JP2000608154A priority patent/JP4741734B2/en
Publication of WO2000058706A2 publication Critical patent/WO2000058706A2/en
Publication of WO2000058706A3 publication Critical patent/WO2000058706A3/en

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/04—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands
    • G01L5/10—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands using electrical means
    • 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
    • B66B7/1223—Checking means specially adapted for ropes or cables by analysing electric variables
    • 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
    • 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

Landscapes

  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

A method and system for detecting or measuring defects in a rope having ferromagnetic tension members includes a magnetic field exciter and an array of magnetic flux sensors corresponding to the tension members in a known relationship. Measurements of magnetic flux leakage are indicative of defects. Another aspect of the invention includes a method and system for detecting or measuring defects in an elevator rope having electrically conductive tension members, whereby measured electrical resistance in the tension members is indicative of defects.
PCT/US2000/007279 1999-03-29 2000-03-17 Method and apparatus for detecting elevator rope degradation using electrical or magnetic energy WO2000058706A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP00921406.5A EP1173740B1 (en) 1999-03-29 2000-03-17 Method and apparatus for detecting elevator rope degradation using magnetic energy
ES00921406.5T ES2635266T3 (en) 1999-03-29 2000-03-17 Procedure and equipment for the detection of degradation of an elevator rope using magnetic energy
BR0009371-8A BR0009371A (en) 1999-03-29 2000-03-17 Method and apparatus for detecting elevator cable degradation using electrical or magnetic energy
JP2000608154A JP4741734B2 (en) 1999-03-29 2000-03-17 Method and apparatus for detecting degradation of an elevator rope using magnetic energy

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/280,637 1999-03-29
US09/280,637 US6633159B1 (en) 1999-03-29 1999-03-29 Method and apparatus for magnetic detection of degradation of jacketed elevator rope

Publications (2)

Publication Number Publication Date
WO2000058706A2 WO2000058706A2 (en) 2000-10-05
WO2000058706A3 true WO2000058706A3 (en) 2001-07-26

Family

ID=23073959

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/007279 WO2000058706A2 (en) 1999-03-29 2000-03-17 Method and apparatus for detecting elevator rope degradation using electrical or magnetic energy

Country Status (8)

Country Link
US (2) US6633159B1 (en)
EP (2) EP1173740B1 (en)
JP (2) JP4741734B2 (en)
KR (2) KR100678534B1 (en)
CN (1) CN1227526C (en)
BR (1) BR0009371A (en)
ES (2) ES2640939T3 (en)
WO (1) WO2000058706A2 (en)

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EP2299251B1 (en) 2017-07-05
JP5337758B2 (en) 2013-11-06
JP2010204113A (en) 2010-09-16
JP2002540419A (en) 2002-11-26
EP1173740B1 (en) 2017-05-03
WO2000058706A2 (en) 2000-10-05
US7123030B2 (en) 2006-10-17
BR0009371A (en) 2001-12-26
KR20060097072A (en) 2006-09-13
KR20020005626A (en) 2002-01-17
ES2635266T3 (en) 2017-10-03
ES2640939T3 (en) 2017-11-07
CN1227526C (en) 2005-11-16
JP4741734B2 (en) 2011-08-10
US20040046540A1 (en) 2004-03-11
EP2299251A1 (en) 2011-03-23
KR100678534B1 (en) 2007-02-05
EP1173740A2 (en) 2002-01-23
US6633159B1 (en) 2003-10-14
CN1351710A (en) 2002-05-29

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