EP1930496B1 - Câble en fibres synthétiques - Google Patents

Câble en fibres synthétiques Download PDF

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Publication number
EP1930496B1
EP1930496B1 EP07120987.8A EP07120987A EP1930496B1 EP 1930496 B1 EP1930496 B1 EP 1930496B1 EP 07120987 A EP07120987 A EP 07120987A EP 1930496 B1 EP1930496 B1 EP 1930496B1
Authority
EP
European Patent Office
Prior art keywords
indicator
fibres
rope
strand
fibers
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.)
Active
Application number
EP07120987.8A
Other languages
German (de)
English (en)
Other versions
EP1930496A3 (fr
EP1930496A2 (fr
Inventor
Claudio 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
Original Assignee
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
Priority to EP07120987.8A priority Critical patent/EP1930496B1/fr
Publication of EP1930496A2 publication Critical patent/EP1930496A2/fr
Publication of EP1930496A3 publication Critical patent/EP1930496A3/fr
Application granted granted Critical
Publication of EP1930496B1 publication Critical patent/EP1930496B1/fr
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Anticipated expiration legal-status Critical

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Classifications

    • 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
    • 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
    • D07B1/24—Ropes or cables with a prematurely failing element
    • 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
    • D07B2205/3003—Glass
    • 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 synthetic fiber rope consisting of strands arranged in at least one strand layer, wherein each strand of stranded yarns and the yarns consist of synthetic fibers, wherein at least one strand of at least one strand layer has indicator fibers for monitoring the life of the rope according to the definition of the independent patent claims.
  • EP 1 371 597 A1 is known as a suspension for lifts used, sheathed rope known.
  • the rope has inner layers of strands and outer layers of strands, wherein a strand layer consists of several stranded strands and the stranding direction of the inner strand layers is opposite to the stranding direction of the outer strand layer.
  • the tensile strength of the inner strand layers is higher than the tensile strength of the outer strand layer.
  • Each strand is constructed of stranded and impregnated aramid fibers.
  • the service life of the outer strand layer is smaller than the service life of the inner strand layers.
  • each two adjacent strands are provided with electrically conductive wires that rub against each other and thus detect the expiration of the rope life or the end of the Seillebensdauer in a timely manner.
  • the cable has inner layers of strands and outer layers of strands, wherein a strand layer consists of several stranded strands and the stranding direction of the inner strand layers is in the same direction as the stranding direction of the outer strand layer.
  • Each strand is constructed of stranded and impregnated aramid fibers.
  • each a strand of a strand layer is provided with electrically conductive carbon fibers.
  • the carbon fibers tend to crack or break, either due to excessive strains or too large a number of bending changes, than the supporting aramid fibers of the strand.
  • the number of cracked carbon fibers can be determined.
  • only a certain percentage of the carbon fibers may fail. Then the elevator is automatically driven to a predetermined stop and turned off.
  • the invention aims to remedy this situation.
  • the invention as characterized in claim 1, solves the problem of providing a synthetic fiber rope with increased sensitivity for monitoring the life of the rope.
  • the monitoring of rope life is a fundamental problem of all synthetic fiber ropes, especially those that are surrounded by a jacket.
  • the Carbon fibers are selected according to the load requirements in the rope and arranged.
  • a disadvantage of this method may be that the parameters to be conditioned can not be optimally matched to each other and the suspension means must be replaced too early to be far enough from the critical state.
  • synthetic fiber ropes serving as suspension means can be used up to 60% or 80% of the residual breaking force, based on the normal breaking force. The more precisely this point can be reached, the more economically can suspension elements be used.
  • synthetic fiber cables serving as lifting means for elevators are permanently electrically monitored by means of yarns of carbon fibers integrated in the cable strands.
  • the advantage here is that the synthetic fiber ropes over its entire length including non-visible areas, such as the areas in the cable locks, are monitored.
  • the synthetic fiber ropes detect the abrasive wear within the rope and reliably detect damage from outside and give the elevator user a maximum of security through the constant connection to the elevator control, which can respond quickly and uncompromisingly when needed.
  • An indicator fiber may be any material that is conductive in any form, such as fibers having optical fiber properties, or metallic coated engineering fibers, carbon fibers, etc. that are electrically conductive, with the fibers rubbing sooner on direct wear contact the carrying fibers.
  • the conductive indicator fibers are contacted at the end of the rope and connected to devices. At one end of the rope the indicator fibers are connected to a signal transmitter and at the other end of the rope, the indicator fibers are connected to a signal receiver. The transmission signal is measured by means of the signal receiver and evaluated on the basis of the measured or the missing signal, the state of the indicator fibers.
  • EP 0 731 209 A1 shows an example of an indicator fiber monitoring by means of electrical signals.
  • a synthetic fiber rope consists of several stranded strands arranged in different layers, wherein each strand consists of stranded yarns, wherein a yarn consists of, for example, 1000 synthetic fibers.
  • a raw yarn consists either of unidirectional synthetic fibers or has a protective rotation of, for example, 15 revolutions per meter for better processability already at the factory.
  • fiber is used as a length-independent generic term for all textile fibers.
  • “Filament” is the name for textile fibers of very large or practically endless length in the manufacture of man-made fibers.
  • the stranding direction of the yarns in the strands is provided so that the single fiber is advantageously aligned in the pulling direction of the cable or in the cable longitudinal axis.
  • the synthetic fiber rope may be composed of chemical fibers such as aramid fibers or related fibers, polyethylene fibers, polyester fibers and glass fibers, etc.
  • the synthetic fiber rope may consist of one or two or three or more than three strand layers. At least one strand of at least one strand layer has indicator fibers or at least one indicator yarn for monitoring the life of the rope.
  • the plastic surrounding the strand provided with at least one indicator yarn, also called matrix has a lower abrasion resistance than the matrix of the remaining strands.
  • the matrix material or the resin of the strands surrounding the strands with indicator yarns consists of a softer plastic (for example Shore hardness range A) than the matrix materials (for example shorehardness range D) of the adjacent or remaining strands, as a result of which this strand is opposite to a strand without indicator yarn lower resistance to Abrasion has.
  • the matrix material may be interspersed with a plasticizer.
  • known plasticizers can be used. Due to the poorer abrasion behavior of the strands with indicator yarns, an early onset wear and thus earlier failure of the indicator yarns in the strands is provoked during flexure by the relative movement occurring with the adjacent strands.
  • the strand with indicator yarn acts as a predetermined breaking point.
  • the stranded wire with indicator yarn is referred to below as the indicator strand.
  • the wear increase can be controlled.
  • Phthalates and adipates are typical softeners that soften the strand whose transverse stiffness is lower and the resistance to abrasion is reduced.
  • the matrix can be made "softer" than the neighboring strands, with increasing amount of plasticizer, the abrasion behavior deteriorates depending on the degree of softness.
  • the matrix material of the adjacent strand or other strands (strand without indicator yarn) which is identical to the matrix material of the indicator strand can be mixed with an additive which reduces the friction with respect to the indicator strand.
  • additives for example, waxes or small amounts of Teflon can be added. (1 to 3% wax or 5 to 15% Teflon powder, based on the solids content of the matrix without fiber content).
  • this can be done with the matrix material of the neighboring strand identical matrix material of the indicator strand during manufacture are treated so that the plastic matrix degraded until the hardness and the wear resistance decreases.
  • This is achieved by a temperature treatment of the indicator strand at a temperature greater than 230 ° and a treatment time of more than 20 s. Due to the temperature, the long molecular chains required for the material properties separate so much that the molecules no longer completely recombine on cooling.
  • the stranded matrix can be fed with water molecules that prevent complete recombination of the molecular chains. Alternatively, other molecules are conceivable that impair or prevent recombination. There is an initial degradation of the matrix, which leads to a significantly lower abrasion resistance and thus provokes a failure of the indicator yarn. The abrasion protection is deliberately deteriorated.
  • the indicator yarn is located in the vicinity of the strand surface and makes the helical structure of the synthetic fibers or synthetic fiber yarns with. Because of the softer stranded matrix, the indicator yarn is rubbed through. Thus, the permanent monitoring of the load-bearing strand is interrupted and detected as wear before the other supporting strands were affected. This ensures that the indicator strands have different performance not only because of the different elongation at break, but also because of the different hardness of the matrix, a reliable failure probability is generated. (The elongation at break is stretching until a fiber, yarn or strand breaks).
  • the indicator strands in a multilayer synthetic fiber rope in such a way that the load bearing is higher in relation to the adjacent strands.
  • the two inner concentric Litzenlagen a higher load share, because although the lay length compared to the outermost layer is constant, the impact angle to the center of the synthetic fiber rope is getting smaller.
  • the strands are significantly steeper in the rope network, whereby the strands are shorter or longer depending on the situation. Due to the geometric limitation, the innermost strands are the shortest and therefore have the higher percentage of support. Therefore, it is advisable to arrange further indicator yarns in individual strands of the two inner strand layers.
  • the middle strand layer is to be preferred because this layer is subjected to increased stress due to the different winding radii and thus different bending speeds.
  • a synthetic fiber with very good dynamic bending capacity can be used for the strand construction of the strand without indicator yarn.
  • the indicator fibers for example, carbon fibers
  • the superior synthetic fibers exist for the use of current co-polymer based suspending agents, for example copoly-terephthalamide, among these Conditions of working inferior fibers may be poly-p-phenylene terephthalamide.
  • the dynamic bending capacity is the bending capacity under changing loads).
  • the indicator fibers for example carbon fibers
  • the indicator fibers can be combined with synthetic fibers which have a higher modulus of elasticity compared to the other synthetic fibers of the indicator strand or to the synthetic fibers of the strand without indicator yarn.
  • synthetic fibers which are combined with the indicator yarns in the indicator strands for example, Twaron fibers having an E-modulus of 100,000 to 120,000 N / mm 2 can be used.
  • the remaining fibers of the non-indicator strands may for example consist of techno fibers with 76'000 N / mm 2 .
  • the above measures to monitor the life of the rope can also be combined.
  • the resistance to abrasion by changing the stranded matrix can be provided and at the same time the indicator yarn consist of indicator fibers and synthetic fibers which are inferior in stress to the other synthetic fibers.

Landscapes

  • Ropes Or Cables (AREA)

Claims (5)

  1. Câble en fibre synthétique composé de torons disposés dans au moins une position de toron, chaque toron se composant de fils torsadés et les fils se composant de fibres synthétiques, au moins un toron d'au moins une position de toron comportant des fibres témoins permettant de surveiller la durée de vie du câble ;
    caractérisé en ce que :
    au moins un fil témoin se compose de fibres témoins et de fibres synthétiques, les fibres de fil témoin de l'au moins un fil témoin étant soumises à une sollicitation des fibres synthétiques des fils des torons telle que la capacité de résistance à la flexion alternée des fibres de fil témoin de l'au moins un fil témoin est inférieure à la capacité de résistance à la flexion alternée des fibres synthétiques des fils des torons.
  2. Ascenseur doté d'un câble en fibre synthétique selon la revendication 1.
  3. Procédé permettant de surveiller la durée de vie du câble de câbles en fibre synthétique selon la revendication 1, caractérisé en ce que les torons sont surveillés en permanence à l'aide des fibres témoins.
  4. Procédé selon la revendication 3, caractérisé en ce que pour surveiller les fibres témoins, les fibres témoins sont raccordées à un émetteur de signaux à une extrémité du câble et que les fibres témoins sont raccordées à un récepteur de signaux à l'autre extrémité du câble et qu'un signal émis de l'émetteur de signaux est mesuré à l'aide du récepteur de signaux et que l'état des fibres témoins est analysé sur la base du signal mesuré et/ou défaillant.
  5. Procédé selon la revendication 4, caractérisé en ce que la surveillance des fibres témoins est effectuée à l'aide des signaux optiques ou électriques.
EP07120987.8A 2006-12-04 2007-11-19 Câble en fibres synthétiques Active EP1930496B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07120987.8A EP1930496B1 (fr) 2006-12-04 2007-11-19 Câble en fibres synthétiques

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP06125326 2006-12-04
EP07120987.8A EP1930496B1 (fr) 2006-12-04 2007-11-19 Câble en fibres synthétiques

Publications (3)

Publication Number Publication Date
EP1930496A2 EP1930496A2 (fr) 2008-06-11
EP1930496A3 EP1930496A3 (fr) 2009-06-03
EP1930496B1 true EP1930496B1 (fr) 2013-07-24

Family

ID=39362804

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07120987.8A Active EP1930496B1 (fr) 2006-12-04 2007-11-19 Câble en fibres synthétiques

Country Status (1)

Country Link
EP (1) EP1930496B1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202011001846U1 (de) 2011-01-24 2012-04-30 Liebherr-Components Biberach Gmbh Vorrichtung zur Erkennung der Ablegereife eines hochfesten Faserseils beim Einsatz an Hebezeugen
DE102013017110A1 (de) * 2013-08-28 2015-03-05 Liebherr-Components Biberach Gmbh Vorrichtung zur Erkennung der Ablegereife eines hochfesten Faserseils beim Einsatz an Hebezeugen
CN103469475A (zh) * 2013-08-29 2013-12-25 泰安鲁普耐特塑料有限公司 一种聚氨酯纤维弹力绳及其制备方法
AT516444B1 (de) 2014-11-05 2016-09-15 Teufelberger Fiber Rope Gmbh Seil aus textilem Fasermaterial
CN104372521A (zh) * 2014-11-26 2015-02-25 泰安鲁普耐特塑料有限公司 一种动力绳及其制备方法
TR201808691T4 (tr) 2015-10-21 2018-07-23 Liebherr Components Biberach Kaldirma araçlarinin yüksek dayanima sahi̇p fi̇ber halatinin deği̇şti̇rme durumunun algilanmasi i̇çi̇n düzenek.
US10808355B2 (en) 2017-04-20 2020-10-20 Teufelberger Fiber Rope Gmbh High-strength fibre rope for hoisting equipment such as cranes

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2169431C (fr) * 1995-03-06 2005-07-12 Claudio De Angelis Materiel servant a indiquer quand des cables a fibres synthetiques doivent etre mis au rebut
EP1371597B1 (fr) * 2001-02-16 2012-11-14 Mitsubishi Denki Kabushiki Kaisha Cable principal d'ascenseur

Also Published As

Publication number Publication date
EP1930496A3 (fr) 2009-06-03
EP1930496A2 (fr) 2008-06-11

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