EP0731209B1 - Dispositif de détection de la fin de la durée d'utilisation pour câbles en fibres synthétiques - Google Patents

Dispositif de détection de la fin de la durée d'utilisation pour câbles en fibres synthétiques Download PDF

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Publication number
EP0731209B1
EP0731209B1 EP96103183A EP96103183A EP0731209B1 EP 0731209 B1 EP0731209 B1 EP 0731209B1 EP 96103183 A EP96103183 A EP 96103183A EP 96103183 A EP96103183 A EP 96103183A EP 0731209 B1 EP0731209 B1 EP 0731209B1
Authority
EP
European Patent Office
Prior art keywords
rope
equipment according
fibres
cable
strand
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 - Lifetime
Application number
EP96103183A
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German (de)
English (en)
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EP0731209A1 (fr
Inventor
Claudio Dipl.-Ing. De Angelis
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.)
Inventio AG
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Inventio AG
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 Inventio AG filed Critical Inventio AG
Publication of EP0731209A1 publication Critical patent/EP0731209A1/fr
Application granted granted Critical
Publication of EP0731209B1 publication Critical patent/EP0731209B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B7/00—Other common features of elevators
    • B66B7/06—Arrangements of ropes or cables
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/14—Ropes or cables with incorporated auxiliary elements, e.g. for marking, extending throughout the length of the rope or cable
    • D07B1/148—Ropes or cables with incorporated auxiliary elements, e.g. for marking, extending throughout the length of the rope or cable comprising marks or luminous elements
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/02—Ropes built-up from fibrous or filamentary material, e.g. of vegetable origin, of animal origin, regenerated cellulose, plastics
    • D07B1/025—Ropes built-up from fibrous or filamentary material, e.g. of vegetable origin, of animal origin, regenerated cellulose, plastics comprising high modulus, or high tenacity, polymer filaments or fibres, e.g. liquid-crystal polymers
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/14—Ropes or cables with incorporated auxiliary elements, e.g. for marking, extending throughout the length of the rope or cable
    • D07B1/145—Ropes or cables with incorporated auxiliary elements, e.g. for marking, extending throughout the length of the rope or cable comprising elements for indicating or detecting the rope or cable status
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/16—Ropes or cables with an enveloping sheathing or inlays of rubber or plastics
    • D07B1/162—Ropes or cables with an enveloping sheathing or inlays of rubber or plastics characterised by a plastic or rubber enveloping sheathing
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2205/00—Rope or cable materials
    • D07B2205/20—Organic high polymers
    • D07B2205/2046—Polyamides, e.g. nylons
    • D07B2205/205—Aramides
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2205/00—Rope or cable materials
    • D07B2205/30—Inorganic materials
    • D07B2205/3007—Carbon
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2501/00—Application field
    • D07B2501/20—Application field related to ropes or cables
    • D07B2501/2007—Elevators

Definitions

  • the invention relates to a device for detecting the Maturity for synthetic fiber ropes for lifts.
  • a synthetic fiber rope is not a steel rope to compare. Due to the synthetic fiber rope style the method described above for determining the Discard maturity not for the assessment of a possible Wear condition of a synthetic fiber rope used become. The outer jacket of the new support element prevents the visual detection of fiber or Strand breaks.
  • the Indicator fibers dimensioned so that they are simultaneously tear with the carrying strands. So in the extreme case it is difficult to obtain sufficient residual breaking strength because the tear of an indicator fiber is the failure of one entire stranded wire means and not just one single fiber of a strand. The period between an apparently intact rope and a necessary one Changing the rope is very much due to this method small. The wear progress is therefore not recognizable. This facility can Safety requirements in elevator construction are not sufficient. Furthermore, the diameter is reduced Synthetic fiber rope, or wear of the sheath, too optically not after a large number of bending changes detect.
  • the invention has for its object a Discard maturity detection for a synthetic fiber rope for lifts of the type mentioned at the beginning, which the does not have the aforementioned disadvantages and by means of which a replacement of the ropes reliably in time, but cannot be done prematurely unnecessarily.
  • Every strand of the Synthetic fiber rope preferably has more than one Indicator fiber, so a randomness in the Assessment of the condition of the rope is excluded.
  • the one with the fiber twisted or twisted carbon indicator fibers can be assigned one color per layer are to be connected to a voltage source simplify.
  • Indicator fibers in at least everyone Strand position enables a predictive assessment the time of filing.
  • By means of a Indicator fibers related Inspection control takes place at certain intervals the rope is checked automatically. At a The elevator automatically closes when the limit value is exceeded drove to a certain stop and switched off.
  • the rope can be covered with a two-layer different colored rope sheath can be equipped so that the degree of wear of the rope in a simple way can be checked visually.
  • FIG. 1 shows a schematic representation of a Elevator system.
  • Cabin 2 is powered by a drive motor 3
  • Traction sheave 4 driven by a synthetic fiber rope 5.
  • At the other end of the rope 5 hangs a counterweight 6 as Compensation body.
  • the attachment of the rope 5 to the Cabin 2 and on counterweight 6 takes place over Rope end connections 7.
  • the coefficient of friction between the rope 5 and the traction sheave 4 is dimensioned so that at a counterweight 6 placed on a buffer 8 further promotion of the cabin 2 is prevented.
  • FIGS. 2 and 3 show a synthetic fiber rope 5 with Indicator fibers.
  • the shown, in counterblow execution assembled synthetic fiber rope 5 is three layers.
  • a Rope sheath 12 surrounds an outermost strand layer 13. Between a middle strand layer 14 and the outermost one Strand layer 13 becomes a friction-reducing support jacket 15 appropriate. Then an inner strand layer 16 and a rope core 17.
  • the strands 18 are made of individual Aramid fibers twisted or twisted. Every single strand 18 is used to protect the aramid fibers with a Impregnating agents, e.g. Treated polyurethane solution.
  • the principle of discard maturity is based on the Merging two types of fibers with different ones Properties to a strand 18.
  • the one fiber, the Aramid has a high ability to change bends and a high specific elongation.
  • the other fiber, one Carbon fiber 19 has a more brittle behavior, i.e. one less good bending ability and a lower one Elongation at break than the aramid fibers.
  • These values of the carbon indicator fibers 19 can be 30% - 75% depending on the application the values of aramid fibers.
  • Due to the Seilmachart takes the strand length to the core 17 of the rope 5 down, so that the inner strands during operation will have the least stretch. The stretch Accordingly, 19 become conductive for the indicators Fibers with decreasing towards the rope core 17 Elongation at break used. With the help of a voltage source the number of broken carbon indicator fibers 19 be determined.
  • FIG. 4 shows a strand 18 of a synthetic fiber rope 5 with a carbon indicator fiber 19.
  • Both types of fibers, Aramid fibers 20 and carbon fiber 19 are used in the Strand production arranged in parallel and with each other twisted or twisted.
  • the carbon fiber 19 also be placed exactly in the middle of the strand 18, or run helically on the surface line.
  • the Carbon fiber 19 should be within the impregnating agent be arranged to provide adequate protection against Pressure and friction is given. Otherwise, is a premature failure of the carbon indicator fiber 19 too expect and the rope 5 appears incorrectly ready for discard.
  • the Carbon indicator fiber 19 either due to too large Stretching or too many bending cycles more likely to tear or break than the aramid fibers 20 one Strand 18, which is characterized by exceptionally good characterized dynamic properties.
  • the Indicator fiber 19 is in each strand layer 13, 14, 16 or in the outermost and innermost strand layer 13, 16 placed in at least two strands 18. In a few cases only one indicator fiber 19 is sufficient in each Strand layers 13, 14, 16 from. With 1: 1 suspended lifts are always two indicator fibers 19 of a strand 13, 14, 16 on the counterweight 6 by connecting elements 22 connected together or connected in series. At This process can be hung in 2: 1 attachments Engine room to be carried out.
  • the indicator fibers 19 are from the composite of the rope end attachment 7th led out rope end and always in pairs connected with each other.
  • Rope ends also from the rope end connection 7 led out and the indicator fibers 19 from the Rope assembly released. There they belong together Carbon indicator fibers 19 by means of continuity measurement picked out and marked with electrical Lines connected. These lines run on the Cabin 2 in an inspection control. To the connection to simplify inspection control will individual strands 13, 14, 16 different colors assigned. In the inspection control are all necessary electronic components, one enable constant testing of the synthetic fiber rope 5.
  • Fig. 6 shows a circuit diagram of the inspection control.
  • the carbon indicator fiber 19 represents one Resistor R.
  • a low-pass filter TP filters the incoming impulses and leads them to you Threshold switch SW closed.
  • the SW threshold switch compares the measured voltages. If exceeded specific limit values, i.e. due to the tearing
  • the indicator fibers 19 the resistance becomes so great that the permissible voltage value is exceeded.
  • This One does not exceed the limit volatile memory M stored.
  • This memory M can be deleted by means of a reset button T or there his information to someone on the cabin 2
  • Logic L further.
  • This logic L is from the Elevator control queried automatically.
  • Each Indicator pairing is made according to the above Arrangement wired and constantly checked.
  • the Elevator control continuously checks the logic and switches the elevator off if too many fiber tears from the logic be transmitted.
  • This maturity detection also enables testing of strands 18 that are in the middle or innermost Strand layer 14, 16 of the rope 5 are arranged without the a visual assessment or an inductive test would be necessary. So that the different mechanical Tension states in the strand layers 13, 14, 16 in Synthetic fiber rope 5 can be taken into account the individual layers 13, 14, 16 carbon indicator fibers 19 associated with corresponding elongations at break. The outermost indicator fibers 19 in addition to the pressings can withstand the highest shear loads Indicator fibers 19 with a somewhat higher elongation at break be assigned. In this way, an optimal controlled rope wear control can be guaranteed.
  • the rope 5 always slides on the traction sheave 4 in Direction of the greater rope pull, regardless of the Direction of rotation of the traction sheave 4.
  • the order of magnitude of the Elongation slip increases according to the driving ability of the Rope sheath 12 and the groove geometry of the traction sheave 4th
  • the cable sheath 12 should be one of the strand structure get appropriate surface.
  • the surface of the Rope sheath 12 can be referred to as a mountain / valley structure become. Due to the material combination of the Synthetic fiber rope 5 and the cast / steel drive pulley 4 this is no longer subject to abrasive wear, so that in principle from a defined tread 30 can be spoken. Any liquids on the Traction sheave 4 can due to the mountain / valley structure Rope sheath 12 displaced from the defined tread become. The largest pressings on the jacketed Strands 18 act in the groove base 31 of the Traction sheave 4 on the mountain areas 32 of the rope 5 exercised. As a result, the largest are there Signs of wear can be recognized.
  • the surface wear generated Especially due to the expansion slip, but also to a certain extent due to the slip, the surface wear generated.
  • the amount of abrasion determined i.e. the auditor a means of visual Control can be made available up to the next test, there is sufficient sheath thickness the cable sheath 12 in an inner 33 and an outer Color 34 extruded.
  • the thickness of the inner rope extrusion, i.e. the second color 33 measures a specific strength, which still guarantees a sufficiently large running ability.
  • the jacket 12 protects the strands 18 and generates the necessary traction ability.
  • the examiner recognizes at a visual inspection the extruded second color 33 of the rope sheath 12, he knows that the rope 5 in foreseeable future needs to be replaced.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Ropes Or Cables (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Types And Forms Of Lifts (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
  • Filamentary Materials, Packages, And Safety Devices Therefor (AREA)

Claims (10)

  1. Dispositif pour détecter l'état d'usure de remplacement de câbles en fibres synthétiques (5) pour ascenseurs, le câble en fibres synthétiques (5) étant formé de plusieurs couches de torons (13, 14, 16) et ses torons (18) se composant de fibres d'aramide (20) et de fibres de carbone indicatrices (19) conductrices d'électricité,
       caractérisé en ce que les fibres de carbone indicatrices (19) sont dimensionnées pour un allongement spécifique et une capacité de flexion alternée plus faibles que les fibres d'aramide (20).
  2. Dispositif selon la revendication 1, caractérisé en ce que les allongements à la rupture des fibres de carbone indicatrices (19) vont en diminuant vers l'âme de câble (17).
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que chaque couche de torons (13, 14, 16) comporte au moins une fibre de carbone indicatrice (19).
  4. Dispositif selon l'une des revendications 1 à 3, caractérisé en ce que les fibres de carbone indicatrices (19) et les fibres d'aramide (20), à partir d'une disposition parallèle, sont tordues ensemble.
  5. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que les fibres de carbone indicatrices (19) s'étendent au centre des torons (18).
  6. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que les fibres de carbone indicatrices (19) s'étendent en forme d'hélice sur la surface d'un toron (18).
  7. Dispositif selon l'une des revendications 1 à 6, caractérisé en ce que la commande d'ascenseur interroge automatiquement un système logique (L) sur l'état du câble (5) ou des torons (18).
  8. Dispositif selon l'une des revendications 1 à 7, caractérisé en ce que des couleurs différentes sont attribuées aux couches de torons individuelles (13, 14, 16).
  9. Dispositif selon l'une des revendications 1 à 8, caractérisé en ce qu'une gaine (12) du câble en fibres synthétiques (5) a une couleur de gaine intérieure (33) et une couleur de gaine extérieure (34).
  10. Dispositif selon la revendication 9, caractérisé en ce que l'épaisseur de la gaine de câble (12) dans la zone de la couleur de gaine intérieure (33) garantit une capacité de roulement suffisamment grande.
EP96103183A 1995-03-06 1996-03-01 Dispositif de détection de la fin de la durée d'utilisation pour câbles en fibres synthétiques Expired - Lifetime EP0731209B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH63095 1995-03-06
CH63095 1995-03-06
CH630/95 1995-03-06

Publications (2)

Publication Number Publication Date
EP0731209A1 EP0731209A1 (fr) 1996-09-11
EP0731209B1 true EP0731209B1 (fr) 1999-07-07

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EP96103183A Expired - Lifetime EP0731209B1 (fr) 1995-03-06 1996-03-01 Dispositif de détection de la fin de la durée d'utilisation pour câbles en fibres synthétiques

Country Status (22)

Country Link
US (1) US5834942A (fr)
EP (1) EP0731209B1 (fr)
JP (1) JP3824698B2 (fr)
KR (1) KR100434776B1 (fr)
CN (1) CN1048777C (fr)
AR (1) AR001155A1 (fr)
AT (1) ATE181977T1 (fr)
AU (1) AU700649B2 (fr)
BR (1) BR9600892A (fr)
CA (1) CA2169431C (fr)
CZ (1) CZ288156B6 (fr)
DE (1) DE59602355D1 (fr)
DK (1) DK0731209T3 (fr)
ES (1) ES2136335T3 (fr)
HK (1) HK1011391A1 (fr)
HU (1) HU218451B (fr)
NO (1) NO305133B1 (fr)
NZ (1) NZ286035A (fr)
PL (1) PL181290B1 (fr)
RU (1) RU2148117C1 (fr)
TR (1) TR199600183A2 (fr)
ZA (1) ZA961733B (fr)

Cited By (4)

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DE19956736C1 (de) * 1999-11-25 2001-07-26 Kocks Drahtseilerei Verfahren und Verseilvorrichtung zur Herstellung eines Seiles oder Seilelements sowie Seil oder Seilelement
KR101495343B1 (ko) 2006-12-04 2015-02-24 인벤티오 아게 합성 섬유 로프
CN106769568A (zh) * 2017-01-20 2017-05-31 杭州富通通信技术股份有限公司 快速评价阻燃光电缆护层抗开裂性能的试验方法
DE202016002171U1 (de) * 2016-04-05 2017-07-07 Liebherr-Werk Biberach Gmbh Vorrichtung zur Überwachung von Betriebsdaten und/oder Bestimmung der Ablegereife eines Seils beim Einsatz an Hebezeugen

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JP2008541397A (ja) * 2005-05-20 2008-11-20 オーチス エレベータ カンパニー 導電部材を貫通する電気コネクタ
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KR100794812B1 (ko) * 2006-09-01 2008-01-15 오티스 엘리베이터 컴파니 엘리베이터 하중 지지 부재와 함께 사용되기 위한 전기커넥터 장치
EP1930496B1 (fr) * 2006-12-04 2013-07-24 Inventio AG Câble en fibres synthétiques
ES2428374T3 (es) 2006-12-04 2013-11-07 Inventio Ag Cable de fibras sintéticas
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DE102007042680B4 (de) 2007-09-10 2019-02-28 Airbus Helicopters Deutschland GmbH Faserseil aus hochfesten Kunstfasern für eine Hubschrauberrettungswinde
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ZA961733B (en) 1996-09-10
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DE59602355D1 (de) 1999-08-12
HUP9600548A2 (en) 1997-05-28
CA2169431C (fr) 2005-07-12
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HU218451B (hu) 2000-08-28
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BR9600892A (pt) 1997-12-30
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NO960880L (no) 1996-09-09
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CN1134484A (zh) 1996-10-30
CN1048777C (zh) 2000-01-26
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