GB1270748A - D.c. rope testing - Google Patents

D.c. rope testing

Info

Publication number
GB1270748A
GB1270748A GB42278/70A GB4227870A GB1270748A GB 1270748 A GB1270748 A GB 1270748A GB 42278/70 A GB42278/70 A GB 42278/70A GB 4227870 A GB4227870 A GB 4227870A GB 1270748 A GB1270748 A GB 1270748A
Authority
GB
United Kingdom
Prior art keywords
rope
coils
multiplier
sept
outputs
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
GB42278/70A
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 GB1270748A publication Critical patent/GB1270748A/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

1,270,748. Detecting flaws. ANGLO AMERICAN CORP. OF SOUTH AFRICA Ltd. Sept. 3, 1970 [Sept. 3, 1969], No.42278/70. Heading G1N. 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).
GB42278/70A 1969-09-03 1970-09-03 D.c. rope testing Expired GB1270748A (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
GB1270748A true GB1270748A (en) 1972-04-12

Family

ID=25561443

Family Applications (1)

Application Number Title Priority Date Filing Date
GB42278/70A Expired GB1270748A (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)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0205752A1 (en) * 1985-03-05 1986-12-30 Wyzsza Szkola Pedagogiczna im. Komisji Edukacji Narodowej Sensor of a magnetic defectograph for determination of variationsin cross-section of an elongate ferromagnetic member
GB2206969A (en) * 1987-06-25 1989-01-18 Coal Ind Non-destructive magnetic testing device
GB2212926A (en) * 1987-11-23 1989-08-02 Anglo Amer Corp South Africa Detection of cross-sectional area variations in elongate objects
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
US5198765A (en) * 1990-11-07 1993-03-30 Walt Nicolaas T Van Der Method of and apparatus for simultaneously testing a wire rope for multiple defects
EP0816797A2 (en) * 1996-06-28 1998-01-07 Tokyo Rope Mfg. Co., Ltd. Apparatus for and method of measuring corrosion degree of cable
EP1439262A2 (en) * 2003-01-15 2004-07-21 Hitachi, Ltd. Rope and method for detecting damage thereof
EP1923700A2 (en) * 2005-07-19 2008-05-21 Fundacion Barredo Device for the continuous, permanent monitoring of steel cables used in installations for the transport or lifting of people and materials

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0205752A1 (en) * 1985-03-05 1986-12-30 Wyzsza Szkola Pedagogiczna im. Komisji Edukacji Narodowej Sensor of a magnetic defectograph for determination of variationsin cross-section of an elongate ferromagnetic member
GB2206969A (en) * 1987-06-25 1989-01-18 Coal Ind Non-destructive magnetic testing device
GB2212926A (en) * 1987-11-23 1989-08-02 Anglo Amer Corp South Africa Detection of cross-sectional area variations in elongate objects
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
US5198765A (en) * 1990-11-07 1993-03-30 Walt Nicolaas T Van Der Method of and apparatus for simultaneously testing a wire rope for multiple defects
EP0816797A2 (en) * 1996-06-28 1998-01-07 Tokyo Rope Mfg. Co., Ltd. Apparatus for and method of measuring corrosion degree of cable
EP0816797A3 (en) * 1996-06-28 1998-02-11 Tokyo Rope Mfg. Co., Ltd. Apparatus for and method of measuring corrosion degree of cable
US6172501B1 (en) 1996-06-28 2001-01-09 Tokyo Rope Mfg. Co., Ltd. Method and apparatus for measuring the degree of cable corrosion
EP1439262A2 (en) * 2003-01-15 2004-07-21 Hitachi, Ltd. Rope and method for detecting damage thereof
EP1439262A3 (en) * 2003-01-15 2005-07-06 Hitachi, Ltd. Rope and method for detecting damage thereof
EP1923700A2 (en) * 2005-07-19 2008-05-21 Fundacion Barredo Device for the continuous, permanent monitoring of steel cables used in installations for the transport or lifting of people and materials
EP1923700A4 (en) * 2005-07-19 2012-07-04 Fundacion Barredo Device for the continuous, permanent monitoring of steel cables used in installations for the transport or lifting of people and materials

Also Published As

Publication number Publication date
NL163023C (en) 1980-07-15
NL7013006A (en) 1971-03-05
CH516159A (en) 1971-11-30
AT336314B (en) 1977-04-25
FI53366B (en) 1977-12-30
ZM10570A1 (en) 1971-05-21
ATA800070A (en) 1976-08-15
IL35206A0 (en) 1970-11-30
DK127346B (en) 1973-10-22
ZA696269B (en) 1971-02-24
FR2060867A5 (en) 1971-06-18
FI53366C (en) 1978-04-10
DE2043521A1 (en) 1971-03-11
SE362709B (en) 1973-12-17
NL163023B (en) 1980-02-15
ES383377A1 (en) 1973-01-16
DE2043521B2 (en) 1977-02-10
OA03476A (en) 1971-03-30
IL35206A (en) 1973-01-30
BE755698A (en) 1971-02-15
NO123589B (en) 1971-12-13

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