EP0252830B1 - Aramidkabel für Handhabungszwecke - Google Patents

Aramidkabel für Handhabungszwecke Download PDF

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Publication number
EP0252830B1
EP0252830B1 EP87401575A EP87401575A EP0252830B1 EP 0252830 B1 EP0252830 B1 EP 0252830B1 EP 87401575 A EP87401575 A EP 87401575A EP 87401575 A EP87401575 A EP 87401575A EP 0252830 B1 EP0252830 B1 EP 0252830B1
Authority
EP
European Patent Office
Prior art keywords
cable
binder
aramid
constituted
core
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
EP87401575A
Other languages
English (en)
French (fr)
Other versions
EP0252830A1 (de
Inventor
Jean-Claude Cousin
Yves Albert Emile Delvael
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.)
Cousin Freres SA
Original Assignee
Cousin Freres SA
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 Cousin Freres SA filed Critical Cousin Freres SA
Publication of EP0252830A1 publication Critical patent/EP0252830A1/de
Application granted granted Critical
Publication of EP0252830B1 publication Critical patent/EP0252830B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • D07B1/02—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
    • D07B1/141—Ropes or cables with incorporated auxiliary elements, e.g. for marking, extending throughout the length of the rope or cable comprising liquid, pasty or powder agents, e.g. lubricants or anti-corrosive oils or greases
    • D07B1/142—Ropes or cables with incorporated auxiliary elements, e.g. for marking, extending throughout the length of the rope or cable comprising liquid, pasty or powder agents, e.g. lubricants or anti-corrosive oils or greases for ropes or rope components built-up from fibrous or filamentary material
    • 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
    • D07B1/165—Ropes or cables with an enveloping sheathing or inlays of rubber or plastics characterised by a plastic or rubber inlay
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/10—Rope or cable structures
    • D07B2201/1012—Rope or cable structures characterised by their internal structure
    • D07B2201/1016—Rope or cable structures characterised by their internal structure characterised by the use of different strands
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/10—Rope or cable structures
    • D07B2201/1028—Rope or cable structures characterised by the number of strands
    • D07B2201/1036—Rope or cable structures characterised by the number of strands nine or more strands respectively forming multiple layers
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/10—Rope or cable structures
    • D07B2201/104—Rope or cable structures twisted
    • D07B2201/1072—Compact winding, i.e. S/S or Z/Z
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2015—Strands
    • D07B2201/2036—Strands characterised by the use of different wires or filaments
    • D07B2201/2037—Strands characterised by the use of different wires or filaments regarding the dimension of the wires or filaments
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2015—Strands
    • D07B2201/2042—Strands characterised by a coating
    • D07B2201/2044—Strands characterised by a coating comprising polymers
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2015—Strands
    • D07B2201/2046—Strands comprising fillers
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2071—Spacers
    • D07B2201/2074—Spacers in radial direction
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2075—Fillers
    • D07B2201/2076—Fillers having a lubricant function
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2075—Fillers
    • D07B2201/2082—Fillers characterised by the materials used
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2083—Jackets or coverings
    • D07B2201/209—Jackets or coverings comprising braided structures
    • 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
    • D07B2205/20—Organic high polymers
    • D07B2205/2064—Polyurethane resins
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2401/00—Aspects related to the problem to be solved or advantage
    • D07B2401/20—Aspects related to the problem to be solved or advantage related to ropes or cables
    • D07B2401/202—Environmental resistance
    • D07B2401/204—Moisture handling
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2401/00—Aspects related to the problem to be solved or advantage
    • D07B2401/20—Aspects related to the problem to be solved or advantage related to ropes or cables
    • D07B2401/205—Avoiding relative movement of components
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2401/00—Aspects related to the problem to be solved or advantage
    • D07B2401/20—Aspects related to the problem to be solved or advantage related to ropes or cables
    • D07B2401/2065—Reducing wear
    • D07B2401/207—Reducing wear internally
    • 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
    • D07B2501/2015—Construction industries

Definitions

  • the present invention relates to a cable consisting of a strand of multifilament aromatic polyamide son of the "Kevlar" type (Trademark registered by DU PONT DE NEMOURS) or the like intended to constitute a handling cable for crane, transporter bridge or similar machine. , in which there are numerous cable routes.
  • the handling cables are subjected to a very large number of flexions resulting in particular from the fact that these cables are caused to become hoisted on pulleys whose diameters can be relatively small.
  • the handling cables currently in service are generally made from several metal strands. Each strand comprising a determined number of metal wires is wired on appropriate machines so as to form superimposed layers. Some of these metallic cables can have a central textile core.
  • the metallic cables are generally multi-strand and include, for example, from three to thirty-four strands.
  • the problem specific to handling cables stems from the fact that they must have, on the one hand, good tensile strength to allow handling of loads which may be heavy, and, on the other hand, good flexural strength.
  • An angle gear created by a pulley results in a sliding of the outer layers with respect to the inner layers, these sliding coming from the difference in the radii of curvature during bending.
  • the layers and strands constituting the cable cause heating and abrasion which go in the direction of reducing the service life of the cable.
  • the differential elongations are the cause of premature fatigue of the crystalline metal.
  • the traditional solution to solve this problem consists in introducing inside the cable a lubricant usually liquid but which can be a heavy bitumen, but this introduction leads to sealing problems in order to avoid the migration of lubricants.
  • the steel cables currently in use suitably withstand the tensile forces and the bending forces which they undergo. We know substantially the life of a cable in hours of use, and we change it before any threat of breakage that could have very damaging consequences.
  • the steel cables are heavy and relatively rigid, their weight reducing the payload of the machine.
  • the patent US-A-4,095,404 (BABAYAN) has already proposed to use for electric cables reinforcement wires intended to support metal wires carrying strong power currents or weak telecommunication currents.
  • the reinforcing reinforcement is constituted by aramid wires coated with a polyurethane resin.
  • the wires do not rub against each other, which prevents their destruction by self-abrasion.
  • the aramid threads are protected by a polyurethane lacquer in a proportion of 15 to 40% by weight, dried then twisted and then heated to the melting temperature of the polyurethane resin.
  • a mixed metal-aramid cable is thus obtained which has a higher flexural strength than that of high-strength steel.
  • this cable cannot constitute a good handling cable brought to undergo a large number of flexions, because the impregnation is superficial and has a resistance to friction clearly lower than that of a homogeneous composite material.
  • FR-E-65830 describes a cable comprising a central core on which are arranged concentric layers of synthetic nylon threads the whole being covered with a protective braid.
  • the core is elastic to be able to follow the elongation of the nylon under load.
  • the present invention relates to a high performance cable, in particular with regard to bending fatigue.
  • the flexural-resistant aramid cable comprising a central core around which synthetic threads are stranded, the cable being coated with a sheath, is characterized in that the synthetic threads are composite threads made up of fibers aramids impregnated to the core with an abrasion-resistant binder with a low coefficient of friction, the core being a radially elastic central core, the wires being cabled using the metal cabling technique, the coefficient of elongation at break of the binder being higher than that of aramid fibers.
  • Each element constituting the cable according to the present invention is a composite, homogeneous, solid wire, the aromatic polyamide and the binder being intimately amalgamated, as defined above, of well defined section according to the construction chosen.
  • the friction effect of the filaments on each other is reduced on the one hand, and of the wires on the other on the other hand.
  • impregnation products are to constitute, as it were, solid lubricants which have the advantage, after bending, of returning to their original state by elasticity.
  • the wiring gives the aramid a turn effect allowing the desired flexions to be obtained by deformation of the turns, although the elongation at break of the aramid is between 2 and 4%.
  • the aramid yarns impregnated to the core with this binder have a good slip coefficient.
  • a central, radially elastic core constitutes a guide for subsequent windings without intervening in traction. By its capacity of elastic compression, the central core makes it possible to limit the stresses undergone by the external wires since the internal wires can partially be inserted in the elastic core.
  • the central core is constituted by a polyurethane horsehair of Shore hardness close to 95 A.
  • the cable shown is a textile cable of the metal cabled type. It has a central core 1, a first layer of aramid yarns 2 multifilaments, each filament being coated, a second layer 3 of aramid yarns concentric with the second layer, a third layer 4 of aramid yarns concentric with the previous ones, the assembly being shaped in an outer sheath or cover 5.
  • a cable 12 mm in diameter is constituted by a single-core 1 by a layer 2 of 6 aramid wires impregnated with a layer 3 of 12 aramid wires and a layer 4 of 18 aramid wires .
  • Each thread is made up of 1000 multifilaments milled in multiples according to needs, the threads being wired with equal steps or equal angle.
  • a polyurethane film 6 is incorporated between the outer layer 4 and the cover 5.
  • this film prevents the cover from slipping relative to the rest of cable and as a result of blistering or the like.
  • the cover 5 is, for example made by braiding polyester.
  • the aramid yarns 2, 3 and 4 are made from aramid multifilaments impregnated at heart by the process described in patent No. 80 20663 (FR-A-2 491 098).
  • FIG. 4 shows in section on an enlarged scale a wire made up of multifilaments 7 coated and impregnated with a binder 8.
  • the aramid filaments are impregnated with a polyurethane solution in a proportion of 40 to 60% by weight.
  • a polyurethane solution in a proportion of 40 to 60% by weight.
  • the multifilaments being coated with polyurethane, it is liable to undergo folding and to return to its initial position under the elastic action of the return resulting from the polyurethane.
  • the polyurethane applied in liquid solution spreads on the one hand between the multifilaments, and on the other hand outside the thread to which it is possible to give a regular section by the intermediary of a sector.
  • the central core plays an essential role.
  • this core was only intended to constitute a guide for the stranding of the outer wires.
  • the central textile core for example also made of polyurethane, is intended to compensate for certain variations in the internal diameter of the layer 2 by deforming radially, for example at the time of bending, and by resuming its usual geometry as soon as the effort due to said flexion is relaxed.
  • the following table shows the results obtained on a machine working in alternating bending.
  • the tests were carried out with lubricated aramid cables, respectively in D 1000 Twaron (3% sizing rate), in D 1020 Twaron (9% sizing rate), in Kevlar T 960 type (sizing rate 9%), and in Kevlar type T 961 (sizing rate 3%).
  • the diameter of these cables is 12 mm
  • the core wired according to the steel technique, consisting of 15,000 denier wires: 18 wires for the outer layer, 12 wires for the middle layer, 6 wires for the lower layer , wired at the same step, the central core being a fixed polyamide multifilament textile cable of 1680 denier composition 4 x 3, a polyester braiding on polyurethane film completing the cable structure.
  • the nominal breaking strength is 8000 Dan, the force on one strand being 1600 Dan.
  • the numbers indicated represent the number of complete alternating bending performed before breaking.
  • the aramid cables break after a maximum number of alternating bending which is of the order of 40,000.
  • the number of alternating bending is of the order of 45,000 to 150,000 depending on the construction and in a cable manufactured according to the present invention, the number of alternating flexions which can be supported is greater than 300,000 and can reach 1,500,000. The tests were carried out on a machine allowing them, the cables being under tension, to make them undergo alternate bending.
  • the cable is a mono-strand cable with parallel wires of the WARRINGTON-SEALE type.
  • the advantage of this cable is that it makes it possible to use wires of different diameters, which results in better filling of the cable by the wires and consequently the increase in the resistance thereof with correlative reduction in interstices.
  • Another advantage of this type of wiring is that the length of the wires making up the wiring is much better controlled than in the case of textile cables in which the elasticity of the material leads to a kind of self-regulation.
  • the aramid multifilaments being completely impregnated and twisted are coated with a binder which is the subject of the aforementioned patent. The coefficient of this binder on itself is minimum at the temperatures reached during the alternating bending tests. In fact, the lower this coefficient of friction, the lower the temperatures and the choice of binder is therefore linked to its temperature resistance.
  • the polyurethane described above can be replaced by various binders having the aforementioned fundamental characteristics: abrasion resistance, slip coefficient, flexibility, compatible with the process described in patent 80 20663 (FR-A-2 491 098): interfilament impregnation , calibration-smoothing.
  • the polyurethane can be replaced by an extrudable polyvinylidene fluoride copolymer, at 400% elongation (type 10010 SOLEF). In any event, the impregnation rate exceeds 30% by weight.
  • each layer of wires a wrapping with a film with a good coefficient of friction, the voids existing between each of the wires being able to be filled with a grease or a lubricating product.

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  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Ropes Or Cables (AREA)
  • Organic Insulating Materials (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Claims (6)

1. Biegefestes Aramidkabel mit einer Seele, um die synthetische Fäden herumgewickelt sind und das mit einer Hülle verkleidet ist, gekennzeichnet dadurch, daß die synthetischen Fäden (2, 3, 4) zusammengesetzte Fäden sind, die aus Aramidfasern bestehen, die bis ins innerste durch ein Bindemittel (8) imprägniert sind, das abriebfest ist und einen geringen Reibungskoeffizienten aufweist, daß die Seele (1) eine zentrale und radial elastische Seele ist, daß die Fäden nach der Metallkabeltechnik verdrillt sind und daß der Bruchdehnungskoeffizient des Bindemittels (8) größer ist als jener der Aramidfasern.
2. Kabel nach Anspruch 1, dadurch gekennzeichnet, daß jeder zusammengesetzte Faden (2, 3, 4) aus Multifilamenten (7) besteht, die vom Bindemittel (8) eingehüllt sind.
3. Kabel nach Anspruch 1, dadurch gekennzeichnet, daß zwischen jeder Fadenlage (2, 3, 4) eine Bandagierung (6) vorgesehen ist.
4. Kabel nach einem der vorhergehenden Ansprüche, gekennzeichnet dadurch, daß es als einlitziges Kabel gebildet ist
5. Kabel nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Bindemittel (8) aus Polyrurethan besteht.
6. Kabel nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Bindemittel (8) aus Vinylidenfluorid besteht
EP87401575A 1986-07-09 1987-07-06 Aramidkabel für Handhabungszwecke Expired - Lifetime EP0252830B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8609970 1986-07-09
FR8609970A FR2601393B1 (fr) 1986-07-09 1986-07-09 Cable aramide de manutention.

Publications (2)

Publication Number Publication Date
EP0252830A1 EP0252830A1 (de) 1988-01-13
EP0252830B1 true EP0252830B1 (de) 1991-03-27

Family

ID=9337234

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87401575A Expired - Lifetime EP0252830B1 (de) 1986-07-09 1987-07-06 Aramidkabel für Handhabungszwecke

Country Status (4)

Country Link
EP (1) EP0252830B1 (de)
DE (1) DE3768872D1 (de)
FR (1) FR2601393B1 (de)
NO (1) NO169355C (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10472765B2 (en) 2014-11-05 2019-11-12 Teufelberger Fiber Rope Gmbh Rope made of textile fiber material

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4001118A1 (de) * 1990-01-17 1991-07-18 Bayer Ag Seile aus faserverbundprofilen
CH690010A5 (de) * 1994-03-02 2000-03-15 Inventio Ag Seil als Tragmittel für Aufzüge.
BR9500779A (pt) * 1994-03-02 1995-10-24 Inventio Ag Cabo como meio de suporte para elevadores
PE20001199A1 (es) * 1998-10-23 2000-11-09 Inventio Ag Cable de fibra sintetica
DE19956736C1 (de) 1999-11-25 2001-07-26 Kocks Drahtseilerei Verfahren und Verseilvorrichtung zur Herstellung eines Seiles oder Seilelements sowie Seil oder Seilelement
ZA200308847B (en) 2002-12-04 2005-01-26 Inventio Ag Reinforced synthetic cable for lifts
DE202009014031U1 (de) * 2009-10-16 2009-12-24 Manitowoc Crane Group France Sas Synthetikseil als Tragemittel für Krane und andere Hebezeuge
CN104562814B (zh) * 2015-01-08 2016-08-24 哈尔滨工业大学 一种高刚度高比强度的超耐磨复合绳索的制备方法
EP3775365A1 (de) 2018-03-26 2021-02-17 Bridon International Limited Kunstfaserseil
FR3086675B1 (fr) * 2018-10-02 2022-01-07 Ideol Cordage marin avec revetement individuel de chaque noyau
KR20230095116A (ko) 2020-11-02 2023-06-28 케이브이 알&디 센터 게엠베하 로프, 스트랜드, 그리고 로프 및 스트랜드를 제조하기 위한 방법 및 장치

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR65830E (de) * 1956-03-21
GB1338894A (en) * 1970-01-05 1973-11-28 Norfin Cables and tracks for endless track vehicles incorporating such cables
US4095404A (en) * 1975-10-09 1978-06-20 Hitco Method of manufacturing a high-strength, polyurethane-impregnated polyamide cable
FR2356762A1 (fr) * 1976-06-29 1978-01-27 Robin Jacques Cordes en fibres synthetiques et leur procede de fabrication
FR2491098B1 (de) * 1980-09-26 1983-05-27 Cousin Freres Sa
EP0082067A3 (de) * 1981-12-10 1986-01-02 Schlumberger Limited Zugfestes Kohlenfaserelement, daraus gefertigte Kabel und Verfahren zu deren Herstellung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10472765B2 (en) 2014-11-05 2019-11-12 Teufelberger Fiber Rope Gmbh Rope made of textile fiber material

Also Published As

Publication number Publication date
FR2601393B1 (fr) 1989-11-03
FR2601393A1 (fr) 1988-01-15
NO872649L (no) 1988-01-11
DE3768872D1 (de) 1991-05-02
NO169355B (no) 1992-03-02
NO872649D0 (no) 1987-06-24
NO169355C (no) 1992-06-10
EP0252830A1 (de) 1988-01-13

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