EP2803763B1 - Perfektioniertes Zug- und Hubkabel, und Herstellungsverfahren dieses Kabels - Google Patents

Perfektioniertes Zug- und Hubkabel, und Herstellungsverfahren dieses Kabels Download PDF

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Publication number
EP2803763B1
EP2803763B1 EP14167825.0A EP14167825A EP2803763B1 EP 2803763 B1 EP2803763 B1 EP 2803763B1 EP 14167825 A EP14167825 A EP 14167825A EP 2803763 B1 EP2803763 B1 EP 2803763B1
Authority
EP
European Patent Office
Prior art keywords
external
cable
metal strands
strands
traction
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.)
Not-in-force
Application number
EP14167825.0A
Other languages
English (en)
French (fr)
Other versions
EP2803763A1 (de
Inventor
Bernard Guenot
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.)
Steel Ropes Concept and Application - SRCA
Original Assignee
Steel Ropes Concept and Application - SRCA
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 Steel Ropes Concept and Application - SRCA filed Critical Steel Ropes Concept and Application - SRCA
Publication of EP2803763A1 publication Critical patent/EP2803763A1/de
Application granted granted Critical
Publication of EP2803763B1 publication Critical patent/EP2803763B1/de
Not-in-force legal-status Critical Current
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
    • D07B5/00—Making ropes or cables from special materials or of particular form
    • D07B5/007—Making ropes or cables from special materials or of particular form comprising postformed and thereby radially plastically deformed elements
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/14—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
    • D07B1/14—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
    • D07B1/16—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
    • D07B2201/1076—Open winding
    • D07B2201/108—Cylinder winding, i.e. S/Z or Z/S
    • 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
    • D07B2201/2019—Strands pressed to shape
    • 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
    • D07B2201/2023—Strands with core
    • 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
    • D07B2201/2047—Cores
    • D07B2201/2052—Cores characterised by their structure
    • D07B2201/2053—Cores characterised by their structure being homogeneous
    • 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
    • D07B2201/2047—Cores
    • D07B2201/2052—Cores characterised by their structure
    • D07B2201/2055—Cores characterised by their structure comprising filaments or fibers
    • 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
    • D07B2201/2047—Cores
    • D07B2201/2052—Cores characterised by their structure
    • D07B2201/2059—Cores characterised by their structure comprising wires
    • 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
    • D07B2201/2089—Jackets or coverings comprising wrapped 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
    • D07B2205/201—Polyolefins
    • 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
    • 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
    • D07B2205/3021—Metals
    • D07B2205/306—Aluminium (Al)
    • 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
    • D07B2205/3021—Metals
    • D07B2205/3071—Zinc (Zn)
    • 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
    • D07B2401/206—Improving radial flexibility
    • 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
    • D07B7/027—Postforming of ropes or strands

Definitions

  • the present invention relates to the technical sector of steel cables traction and lifting high performance, for example for carrying out lifting or drawing operations.
  • the present invention thus relates to an improved traction cable, as well as a method for improving a towing and lifting cable in the state of the art.
  • each outer metal strand comprises a central core made of steel wire and sometimes made of synthetic fiber or non-deformable plastic that serves as a support for external threads
  • One of the aims of the present invention is therefore to overcome these disadvantages by providing a traction and lifting cable whose mechanical performance is improved.
  • a traction and lifting cable comprising, in known manner, internal metal strands twisted together, and at least one layer of external metal strands twisted around said inner metal strands.
  • Each outer metal strand comprises a central core of deformable plastic material.
  • said outer metal strands are crushed and flattened, so that the constituent wires of each outer strand are arranged in at least two layers, arranged in contact with each other, and in alignment with the at least two corresponding layers of adjacent outer strands, said central core of each outer strand having migrated to fill the interstices present between said two layers and between said constituent wires of each outer strand.
  • such a cable includes increased internal and external contact surfaces.
  • the external contact surface that is to say the surface which is for example in contact with the groove of a pulley or a drum, is increased relative to the cables of the state of the art. Indeed, the free spaces between the outer strands present in the cables of the state of the art, are now occupied.
  • the clean metal section of the cable according to the invention is also increased.
  • the cable according to the invention comprises a greater mechanical strength and has a better flexibility.
  • Such a cable also allows, during use in traction and lifting, to bring the stress on the external son, so that these son deteriorate before the internal components of the cable. This provides additional security in cable control.
  • the behavior of the traction and lifting cable according to the invention is significantly improved over those of the prior art, both in the situations of alternating bending in situations of change of direction.
  • the outer surface of the cable is regular and cylindrical.
  • the internal metal strands are twisted together around a core of steel or plastic or synthetic fibers.
  • the central core of the outer strands is either polypropylene or polyamide or equivalent, or is made from an assembly of synthetic fibers (polyester, polypropylene or other fibers suitable for migration under the pressure of the steel wires).
  • a plastic material is impregnated therein, between the inner metal strands and the outer metal strands.
  • the geometric structure of the cable remains unchanged.
  • the impregnation techniques well known to those skilled in the art are then compatible with the cable according to the invention.
  • the impregnation of the cable also makes it possible to protect the core of said cable, to increase its anti-gyratory structural stability when it comes to rotationally resistant cables, and to homogenize the operation of all the components of said cable, in particular the radial connection of its internal and external components, for all types of cable construction.
  • Each wire or strand may have respectively a different wiring angle and wiring direction.
  • the internal metal strands are twisted together in a first direction of rotation, and the outer metal strands are twisted around the inner metal strands in a second direction of rotation, opposite to the first.
  • the invention also relates to a method for improving a traction and hoisting rope comprising internal metal strands twisted together, and at least one layer of external metal strands twisted around said inner metal strands.
  • each outer metal strand comprises a central core of deformable plastic material.
  • said method consists in carrying out a rotary hammering operation of the circumference of said cable so as, on the one hand, to crush and flatten the outer metal strands so that the constituent wires of each outer strand conform to the least two layers, in contact with each other, and in alignment with the two corresponding layers of adjacent outer strands, and secondly, to migrate the central core of said outer strands so that it fills the interstices present between said two layers and between said constituent son of each outer strand.
  • an improved traction and lifting cable is achieved by maintaining the original quality of the cable and without creating internal indentations between the components of said cable.
  • the amplitude of the deformation of the outer strands to become flat, remains lower than the capacity of deformation of their central core. This deformation remains within the plastic crushing limit of the outer metal strands.
  • the hammering is rotary and longitudinal, and performed simultaneously over the entire circumference of the cable.
  • Rotary hammering allows precision in diameter with unequaled tolerance compared to other technologies with a small dispersion, in particular more or less maximum 1%, and stable.
  • the rotary hammering operation is compatible with all types of impregnation (hot extrusion: polypropylene and other materials mentioned, or cold impregnation type polyurethane).
  • the hammering is successive and continuous over the entire length of the cable.
  • a traction cable (C) well known in the state of the art is of the type comprising internal metal strands (2) twisted in a first direction of rotation about a central core (3).
  • the central core (3) is formed in particular by a ring made of plastic or synthetic fibers or another support made of steel or other metal such as aluminum wire or equivalent (mild steel, zinc, etc.)
  • Such a cable (C) also comprises at least one layer of outer metal strands (4) twisted in a second direction of rotation, opposite to the first for anti-roundabout cables.
  • each metal strand (2, 4) is constituted by a plurality of twisted wires (2a, 4a).
  • Each outer metal strand (4) comprises a central core (5) deformable plastic material, such as a plastic of the polypropylene type, or polyamide or equivalent, or consists of an assembly of synthetic fibers.
  • the cable (1) according to the invention from such a cable (C) of the state of the art, it is necessary to hammer its circumference to crush and flatten the outer metal strands in an orderly manner (4).
  • the hammering is in particular rotary and performed simultaneously over the entire circumference of said cable (C).
  • the hammering is also successive along the length of said cable (C) in a regular and constant advance of said cable.
  • the hammering is carried out by dies of shape adapted to the final diameter of the cable allowing a precise control of the amplitude of the crushing. The dies rotate around the cable during longitudinal scrolling at a constant speed.
  • outer metal strands (4) are completely flattened and flattened so that the metal wires (4a) constituting each outer metal strand (4) are arranged in two or more layers. Moreover, the two layers are in contact with each other, and are aligned with the two layers of the adjacent outer metal strand (4).
  • each outer metal strand (4) After hammering, the central core (5) of each outer metal strand (4) has deformed and migrated to fill the interstices present between said two layers and between said metal wires (4a) constituting each outer metal strand (4).
  • the cable (1) according to the invention can be impregnated with a plastic material (6) of the polypropylene, polyurethane, polyethylene or equivalent type, ... or other type polyamide (Nylon® or Rilsan®) according to a technique well known to those skilled in the art, and for example by extrusion or cold impregnation.
  • the plastic material (6) is advantageously impregnated before the hammering operation and between the inner metal strands (2) and the outer metal strands (4).
  • a traction and lifting cable (1) is thus obtained whose external surface is regular and cylindrical, and whose mechanical performance is very much improved compared with that of the traction cables (C) of the current state of the art.

Landscapes

  • Ropes Or Cables (AREA)

Claims (10)

  1. Zug- und Hubkabel (1) mit Drahtlitzen innen (2), die miteinander verdrillt sind, und zumindest eine Schicht von Drahtlitzen (4) außen, die um diese inneren Drahtlitzen (2) verdrillt sind, gekennzeichnet
    • dadurch, dass jede äußere Drahtlitze (4) eine zentrale Seele (5) aus verformbarem Kunststoffmaterial enthält;
    • und dadurch, dass diese äußeren Drahtlitzen (4) zerquetscht und flachgedrückt werden, so dass die Drähte (4a), die jede äußere Litze bilden (4), in mindestens zwei Schichten angeordnet sind, die Kontakt miteinander haben, und ausgerichtet sind, entlang den mindestens zwei entsprechenden Schichten der angrenzenden Außenlitzen (4), wobei diese zentrale Seele (5) jeder äußeren Litze (4) gewandert ist, so dass die zwischen den beiden Schichten und zwischen den Drähten (4a), die jede äußere Litze bilden (4), vorhandenen Zwischenräume zu füllen.
  2. Zug- und Hubkabel (1) gemäß Anspruch 1, dadurch gekennzeichnet, dass seine Außenfläche regelmäßig und zylindrisch ist.
  3. Zug- und Hubkabel (1) gemäß Anspruch 1 und 2, dadurch gekennzeichnet, dass die inneren Drahtlitzen (2) miteinander um einen Kern (3) aus Kunststoff oder aus Synthetikfasern oder Stahl- oder Aluminiumdraht verdrillt sind.
  4. Zug- und Hubkabel (1) gemäß einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die zentrale Seele der Außenlitzen aus Polypropylen oder aus Polyamid besteht oder eine Kombination synthetischer Faser ist.
  5. Zug- und Hubkabel (1) gemäß einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass ein Kunststoffmaterial in dieses Seil (1) zwischen die inneren Drahtlitzen (2) und die äußeren Drahtlitzen (4) imprägniert ist.
  6. Zug- und Hubkabel (1) gemäß einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass keine deutlichen Einkerbungen zwischen jeweils den Drähten der äußeren Drahtlitzen (4) und denen der inneren Drahtlitzen (2) vorhanden sind.
  7. Zug- und Hubkabel (1) gemäß einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die inneren Drahtlitzen (2) miteinander in einer ersten Rotationsrichtung verdrillt sind, und dass die äußeren Drahtlitzen (4) um die inneren Drahtlitzen (2) in einer zweiten Rotationsrichtung verdrillt sind.
  8. Verfahren zur Herstellung eines Zug- und Hubkabels mit Drahtlitzen innen (2), die miteinander verdrillt sind, und zumindest eine Schicht von äußeren Drahtlitzen (4), die um diese inneren Drahtlitzen (2) verdrillt sind, dadurch gekennzeichnet,
    • dass jede äußere Drahtlitze (4) eine zentrale Seele (5) aus verformbarem Kunststoffmaterial enthält;
    • und dass das genannte Verfahren darin besteht, den Umfang dieses Seils einer Hämmerung zu unterziehen, um einerseits die äußeren Drahtlitzen (4) zu zerquetschen und abzuflachen, so dass die Drähte (4a), die jede äußere Drahtlitze (4) bilden, sich in mindestens zwei Schichten anordnen, die Kontakt miteinander haben, und zu den mindestens zwei entsprechenden Schichten der angrenzenden Außenlitzen (4) ausgerichtet sind, und andererseits um die zentrale Seele (5) der äußeren Litzen (4) dazu zu bringen, in die zwischen den beiden Schichten vorhandenen Zwischenräume und zwischen die Drähte (4a), die jede äußere Litze bilden (4), zu wandern, um diese zu füllen.
  9. Verfahren zur Herstellung eines Zug- und Hubkabels gemäß Anspruch 8, dadurch gekennzeichnet, dass es sich um eine Drehhämmerung handelt, die gleichzeitig auf den gesamten Umfang des Seils ausgeübt wird und mit Lauf des Seils in Längsrichtung, mit konstanter Geschwindigkeit.
  10. Verfahren zur Herstellung eines Zug- und Hubkabels gemäß Anspruch 8, dadurch gekennzeichnet, dass die Drehhämmerung sukzessive auf die gesamte Seillänge ausgeübt wird.
EP14167825.0A 2013-05-14 2014-05-12 Perfektioniertes Zug- und Hubkabel, und Herstellungsverfahren dieses Kabels Not-in-force EP2803763B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1354313A FR3005667B1 (fr) 2013-05-14 2013-05-14 Cable de traction et de levage perfectionne et procede de realisation d'un tel cable

Publications (2)

Publication Number Publication Date
EP2803763A1 EP2803763A1 (de) 2014-11-19
EP2803763B1 true EP2803763B1 (de) 2017-07-12

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ID=48782481

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14167825.0A Not-in-force EP2803763B1 (de) 2013-05-14 2014-05-12 Perfektioniertes Zug- und Hubkabel, und Herstellungsverfahren dieses Kabels

Country Status (2)

Country Link
EP (1) EP2803763B1 (de)
FR (1) FR3005667B1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111979807A (zh) * 2020-07-20 2020-11-24 抚州大力实业发展有限公司 一种钢丝绳

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1003097B (de) * 1955-01-04 1957-02-21 Huettenwerk Oberhausen Ag Verfahren zur Herstellung drehungsfreier, flachlitziger Drahtseile
US3295310A (en) * 1964-03-27 1967-01-03 Bethlehem Steel Corp Wire rope particularly useful for independent wire rope core
DE3203503A1 (de) * 1982-01-29 1983-08-04 Monika 8632 Neustadt Dietz Verfahren zum herstellen eines drehungsarmen bzw. drehungsfeien drahtseiles
DE4316035A1 (de) * 1993-05-13 1994-11-17 Ver Drahtseilwerke Gmbh Verfahren zur Herstellung eines Drahtseils

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

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Publication number Publication date
FR3005667B1 (fr) 2015-05-15
FR3005667A1 (fr) 2014-11-21
EP2803763A1 (de) 2014-11-19

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