ES383377A1 - D.c. rope testing - Google Patents

D.c. rope testing

Info

Publication number
ES383377A1
ES383377A1 ES383377A ES383377A ES383377A1 ES 383377 A1 ES383377 A1 ES 383377A1 ES 383377 A ES383377 A ES 383377A ES 383377 A ES383377 A ES 383377A ES 383377 A1 ES383377 A1 ES 383377A1
Authority
ES
Spain
Prior art keywords
rope
coils
multiplier
outputs
pair
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.)
Expired
Application number
ES383377A
Other languages
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Anglo American Corp of South Africa Ltd
Original Assignee
Anglo American Corp of South Africa Ltd
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 Anglo American Corp of South Africa Ltd filed Critical Anglo American Corp of South Africa Ltd
Publication of ES383377A1 publication Critical patent/ES383377A1/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B7/00—Details of, or auxiliary devices incorporated in, rope- or cable-making machines; Auxiliary apparatus associated with such machines
    • D07B7/02—Machine details; Auxiliary devices
    • D07B7/08—Alarms or stop motions responsive to exhaustion or breakage of filamentary material fed from supply reels or bobbins
    • 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
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/58—Testing of lines, cables or conductors
    • G01R31/59—Testing of lines, cables or conductors while the cable continuously passes the testing apparatus, e.g. during manufacture

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

Broken wires in a metallic, e.g. steel, winding rope are detected by passing the rope 11 through a split circular permanent magnet 10 and a pair of sensing coils 12, the outputs of the coils being multiplied together, thereby eliminating "noise", and displayed by a pen galvanometer. Preferably, the outputs of the coils are applied to the multiplier, via a pair of amplifiers, whose gains are inversely proportional to the speed of the rope, so that the inputs to the multiplier are independent of rope speed, Fig. 3 (not shown).
ES383377A 1969-09-03 1970-09-03 D.c. rope testing Expired ES383377A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ZA696269A ZA696269B (en) 1969-09-03 1969-09-03 D.c.rope testing

Publications (1)

Publication Number Publication Date
ES383377A1 true ES383377A1 (en) 1973-01-16

Family

ID=25561443

Family Applications (1)

Application Number Title Priority Date Filing Date
ES383377A Expired ES383377A1 (en) 1969-09-03 1970-09-03 D.c. rope testing

Country Status (15)

Country Link
AT (1) AT336314B (en)
BE (1) BE755698A (en)
CH (1) CH516159A (en)
DK (1) DK127346B (en)
ES (1) ES383377A1 (en)
FI (1) FI53366C (en)
FR (1) FR2060867A5 (en)
GB (1) GB1270748A (en)
IL (1) IL35206A (en)
NL (1) NL163023C (en)
NO (1) NO123589B (en)
OA (1) OA03476A (en)
SE (1) SE362709B (en)
ZA (1) ZA696269B (en)
ZM (1) ZM10570A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL148290B1 (en) * 1985-03-05 1989-10-31 Wyzsza Szkola Pedagog Magnetic defectograph sensing element for determining changes in cross-sectional areas over substantial length of an object being examined
GB8714877D0 (en) * 1987-06-25 1987-07-29 Coal Industry Patents Ltd Non-destructive testing device
US4929897A (en) * 1987-11-23 1990-05-29 Crucible Societe Anonyme Method and apparatus for detecting cross sectional area variations in a elongate object by measuring radial magnetic flux variations using spaced-apart coils
US5036277A (en) * 1987-11-23 1991-07-30 Crucible Societe Anonyme Method of and apparatus for detecting cross sectional area variations in an elongate object by the non-inductive measurement of radial flux variations
CA2054797A1 (en) * 1990-11-07 1992-05-08 Nicolaas T. Van Der Walt Electro-magnetic testing of wire ropes
ATE224531T1 (en) * 1996-06-28 2002-10-15 Tokyo Rope Mfg Co APPARATUS AND METHOD FOR MEASURING THE DEGREE OF CORROSION OF CABLES
JP4310112B2 (en) * 2003-01-15 2009-08-05 株式会社日立製作所 Rope and rope deterioration diagnosis method
ES2277751B1 (en) * 2005-07-19 2008-06-16 Fundacion Barredo EQUIPMENT FOR PERMANENT AND CONTINUOUS CONTROL OF STEEL CABLES IN TRANSPORTATION OR ELEVATION FACILITIES OF PERSONAL AND MATERIALS.

Also Published As

Publication number Publication date
DK127346B (en) 1973-10-22
NL7013006A (en) 1971-03-05
ZM10570A1 (en) 1971-05-21
NL163023C (en) 1980-07-15
GB1270748A (en) 1972-04-12
ATA800070A (en) 1976-08-15
BE755698A (en) 1971-02-15
FI53366B (en) 1977-12-30
NO123589B (en) 1971-12-13
IL35206A0 (en) 1970-11-30
FR2060867A5 (en) 1971-06-18
DE2043521B2 (en) 1977-02-10
SE362709B (en) 1973-12-17
CH516159A (en) 1971-11-30
AT336314B (en) 1977-04-25
DE2043521A1 (en) 1971-03-11
ZA696269B (en) 1971-02-24
FI53366C (en) 1978-04-10
NL163023B (en) 1980-02-15
IL35206A (en) 1973-01-30
OA03476A (en) 1971-03-30

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19901026