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EP1653483A1 - Multiconductor flexible electrical cable - Google Patents

Multiconductor flexible electrical cable Download PDF

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Publication number
EP1653483A1
EP1653483A1 EP04292581A EP04292581A EP1653483A1 EP 1653483 A1 EP1653483 A1 EP 1653483A1 EP 04292581 A EP04292581 A EP 04292581A EP 04292581 A EP04292581 A EP 04292581A EP 1653483 A1 EP1653483 A1 EP 1653483A1
Authority
EP
European Patent Office
Prior art keywords
layer
strands
wires
cable according
multicore cable
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.)
Granted
Application number
EP04292581A
Other languages
German (de)
French (fr)
Other versions
EP1653483B1 (en
Inventor
Harald Bertges
Heinz-Willi Hamacher
Walter Winkelbauer
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.)
Nexans SA
Original Assignee
Nexans 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
Priority to DK04292581T priority Critical patent/DK1653483T3/en
Priority to DE502004002397T priority patent/DE502004002397D1/en
Priority to EP04292581A priority patent/EP1653483B1/en
Priority to PL04292581T priority patent/PL1653483T3/en
Priority to AT04292581T priority patent/ATE349061T1/en
Application filed by Nexans SA filed Critical Nexans SA
Priority to CNA2005101138842A priority patent/CN1767082A/en
Priority to US11/259,377 priority patent/US7180002B2/en
Priority to CA002524744A priority patent/CA2524744A1/en
Publication of EP1653483A1 publication Critical patent/EP1653483A1/en
Application granted granted Critical
Publication of EP1653483B1 publication Critical patent/EP1653483B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/04—Flexible cables, conductors, or cords, e.g. trailing cables
    • H01B7/041—Flexible cables, conductors, or cords, e.g. trailing cables attached to mobile objects, e.g. portable tools, elevators, mining equipment, hoisting cables
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H01B7/22—Metal wires or tapes, e.g. made of steel
    • H01B7/221—Longitudinally placed metal wires or tapes
    • H01B7/223—Longitudinally placed metal wires or tapes forming part of a high tensile strength core

Definitions

  • the present invention is a multi-core flexible electrical line according to the preamble of claim 1.
  • Flexible cables find their application z. B. as electrical supply lines for moving machinery, the cables can be drummed or towed.
  • Application sites are opencast mining and underground mining.
  • FIG. 1 shows a section through a line according to the teachings of the invention.
  • the line has three main wires 1, which consist of a highly flexible, fine-stranded copper conductor 1 a and an insulating layer 1 b based on EPR. Between the main wires 1 there are protective conductors 2, which, like the main wires 1, have a highly flexible, finely stranded copper conductor 2a and an insulation 2b based on EPR.
  • a support member 3 is provided, which has a torsion-free steel cable 3a and an insulating rubber sheath 3b.
  • the jacket 5 consists of two layers 5a and 5b, between which a Torsionstikgeflecht 4 is provided.
  • the layers 5a and 5b advantageously consist of a chlorine-containing rubber which is oil-resistant, flame-retardant and tear-resistant and resistant to abrasion.
  • the torsion protection braid is constructed of high tensile and abrasion resistant plastic threads.
  • the support member 3 can be advantageously used as a control conductor or as an overload.
  • the main wires 1 and the protective conductor 2 are roped on the support member 3.
  • FIG. 2 shows the steel cable 3a on an enlarged scale.
  • the steel cable 3a consists of a core strand 6 of, for example, seven individual wires.
  • the core strand is surrounded by four strands 7, which are each composed of twenty-six individual wires.
  • An outer layer is formed of sixteen outer strands, which, like the Kernlitze 6 consist of seven individual wires.
  • the strands 7 of the first layer are stranded with a lay length of 35 mm on the core strand 6.
  • the outer strands 10 of the second layer are roped to the first layer with a lay length of 50 mm.
  • the bearing element constructed in this way gives the cable an extremely high bending fatigue strength and thus a very long service life.

Landscapes

  • Insulated Conductors (AREA)
  • Ropes Or Cables (AREA)
  • Communication Cables (AREA)

Abstract

The cable has a central supporting unit surrounded by a set of wires, where the supporting unit consists of a turn-free steel cable, which is provided with an outer insulating layer. The steel cable has a core wire (6), a layer of a set of wires (7) ropped on the wire (6), and another layer of wires (10) rolled on the former layer. Standard direction and length of the two layers deviate from each other.

Description

Gegenstand der vorliegenden Erfindung ist eine mehradrige flexible elektrische Leitung nach dem Oberbegriff des Anspruchs 1.The present invention is a multi-core flexible electrical line according to the preamble of claim 1.

Flexible Leitungen finden ihre Anwendung z. B. als elektrische Versorgungsleitungen für bewegliche Maschinen, wobei die Leitungen getrommelt bzw. geschleppt werden können. Anwendungsorte sind Tagebau und Bergbau unter Tage.Flexible cables find their application z. B. as electrical supply lines for moving machinery, the cables can be drummed or towed. Application sites are opencast mining and underground mining.

Bei der Konstruktion derartiger Leitungen kommt es darauf an, das Dehnungsverhalten der Leiter für kleine Biegeradien zu optimieren und der Leitung eine ausreichende Zugfestigkeit zu geben.In the construction of such lines, it is important to optimize the elongation behavior of the conductors for small bending radii and to give the line a sufficient tensile strength.

Aus der DE-Z "Elektrodienst", 1983, Heft 1, Seite 26/27 ist eine Aufzugsteuerleitung bekannt, bei welcher die Adern um ein Tragorgan zur Leitungsseele verseilt sind, und die Leitungsseele von einem Kunststoffmantel umgeben ist. Die bekannte Leitung zeichnet sich durch einen Leitungsaufbau aus, bei dem jeweils fünf Adern um einen zugfesten Kern zu einem Bündel verseilt sind, und sechs dieser Bündel sind dann mit kurzer Schlaglänge um das Tragorgan angeordnet, wobei das Tragorgan als drehungsfreies Stahlseil ausgebildet ist. Die Vorteile dieser Konstruktion sind:

  • hohe Biegetüchtigkeit
  • hohe Flexibilität
  • absolute Stabilität des Aderverbandes.
From DE-Z "Elektrodienst", 1983, Issue 1, page 26/27 a lift control line is known in which the wires are stranded around a support member to the cable core, and the cable core is surrounded by a plastic sheath. The known line is characterized by a line structure in which five wires are stranded around a tensile core into a bundle, and six of these bundles are then arranged with short lay length to the support member, wherein the support member is formed as a rotation-free steel cable. The advantages of this construction are:
  • high bending ability
  • high flexibility
  • absolute stability of the vein bandage.

Aufgabe der vorliegenden Erfindung ist, eine trommelbare Leitung für Energie- und/oder Datenübertragung bereitzustellen, welche sehr hohen dynamischen Zugbelastungen ausgesetzt werden kann und von daher unter den rauhen Bedingungen unter Tage verwendet werden kann.It is an object of the present invention to provide a reelable conduit for power and / or data transmission which can be subjected to very high dynamic tensile loads and therefore can be used underground in harsh conditions.

Die Aufgabe wird durch die im Kennzeichen des Anspruchs 1 erfaßten Merkmale gelöst.The object is achieved by the features covered in the characterizing part of claim 1.

Aufgrund des Aufbaus des hoch zugfesten und verdrehungsfreien Stahlseils vollzieht sich ein Bruch der Seilelemente nach extrem langer Einsatzzeit in den zentralen Lagen des Stahlseils, sodaß eine vorzeitige Beschädigung der Adern vermieden ist.Due to the structure of the high-tensile and torsion-free steel rope, a rupture of the rope elements takes after extremely long time in the central layers of the steel cable, so that premature damage to the wires is avoided.

Weitere vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen erfaßt.Further advantageous embodiments of the invention are covered in the subclaims.

Die Erfindung ist anhand der in den Figuren 1 und 2 schematisch dargestellten Ausführungsbeispiele näher erläutert.The invention is explained in more detail with reference to the embodiments schematically illustrated in Figures 1 and 2.

In der Figur 1 ist ein Schnitt durch eine Leitung nach der Lehre der Erfindung dargestellt. Die Leitung weist drei Hauptadern 1 auf, welche aus einem hoch flexiblen, feindrähtigen Kupferleiter 1 a und einer Isolierschicht 1 b auf der Basis von EPR bestehen. Zwischen den Hauptadern 1 befinden sich Schutzleiter 2, die wie die Hauptadern 1 einen hoch flexiblen, feindrähtigen Kupferleiter 2a und eine Isolierung 2b auf der Basis von EPR aufweisen. Im Zentrum der Leitung ist ein Tragorgan 3 vorgesehen, welches ein verdrehungsfreies Stahlseil 3a sowie eine isolierende Gummihülle 3b aufweist. Der Mantel 5 besteht aus zwei Schichten 5a und 5b, zwischen denen ein Torsionsschutzgeflecht 4 vorgesehen ist. Die Schichten 5a und 5b bestehen vorteilhafterweise aus einem chlorhaltigen Kautschuk, der ölbeständig, schwer entflammbar sowie weiterreiß- und abriebfest ist. Das Torsionsschutzgeflecht ist aus hoch zugfesten und abriebfesten Kunststofffäden aufgebaut.FIG. 1 shows a section through a line according to the teachings of the invention. The line has three main wires 1, which consist of a highly flexible, fine-stranded copper conductor 1 a and an insulating layer 1 b based on EPR. Between the main wires 1 there are protective conductors 2, which, like the main wires 1, have a highly flexible, finely stranded copper conductor 2a and an insulation 2b based on EPR. In the center of the line, a support member 3 is provided, which has a torsion-free steel cable 3a and an insulating rubber sheath 3b. The jacket 5 consists of two layers 5a and 5b, between which a Torsionsschutzgeflecht 4 is provided. The layers 5a and 5b advantageously consist of a chlorine-containing rubber which is oil-resistant, flame-retardant and tear-resistant and resistant to abrasion. The torsion protection braid is constructed of high tensile and abrasion resistant plastic threads.

Das Tragorgan 3 kann vorteilhafterweise als Steuerleiter bzw. als Überlastkontrolleiter verwendet werden.The support member 3 can be advantageously used as a control conductor or as an overload.

Die Hauptadern 1 und die Schutzleiter 2 sind auf das Tragorgan 3 aufgeseilt.The main wires 1 and the protective conductor 2 are roped on the support member 3.

Die Figur 2 zeigt das Stahlseil 3a in vergrößertem Maßstab.FIG. 2 shows the steel cable 3a on an enlarged scale.

Das Stahlseil 3a besteht aus einer Kernlitze 6 aus beispielsweise sieben Einzeldrähten.The steel cable 3a consists of a core strand 6 of, for example, seven individual wires.

Die Kernlitze ist von vier Litzen 7 umgeben, welche jeweils aus sechsundzwanzig Einzeldrähten aufgebaut sind.The core strand is surrounded by four strands 7, which are each composed of twenty-six individual wires.

In den Zwickeln zwischen den Litzen 7 sind vier kleinere Litzen 8 vorgesehen. Die Durchmesser der Litzen 7 und 8 sind so aufeinander abgestimmt, daß sie eine gemeinsame Umhüllende 9 tangieren.In the gussets between the strands 7 four smaller strands 8 are provided. The diameters of the strands 7 and 8 are coordinated so that they affect a common envelope 9.

Eine äußere Lage ist aus sechzehn Außenlitzen gebildet, die wie die Kernlitze 6 aus jeweils sieben Einzeldrähten bestehen.An outer layer is formed of sixteen outer strands, which, like the Kernlitze 6 consist of seven individual wires.

Die Litzen 7 der ersten Lage sind mit einer Schlaglänge von 35 mm auf die Kernlitze 6 aufgeseilt. Die Außenlitzen 10 der zweiten Lage sind mit einer Schlaglänge von 50 mm auf die erste Lage aufgeseilt.The strands 7 of the first layer are stranded with a lay length of 35 mm on the core strand 6. The outer strands 10 of the second layer are roped to the first layer with a lay length of 50 mm.

Das auf diese Weise aufgebaute Tragorgan verleiht der Leitung eine extrem hohe Biegewechselfestigkeit und somit eine sehr lange Lebensdauer.The bearing element constructed in this way gives the cable an extremely high bending fatigue strength and thus a very long service life.

Im Extremfall ist durch den Seilaufbau gewährleistet, daß zunächst die Drähte der inneren Lage zu Bruch gehen, und somit eine Beschädigung der Hauptadern vermieden bzw. zumindest hinausgezögert wird.In extreme cases, it is ensured by the cable construction that initially go the wires of the inner layer to break, and thus avoid damage to the main wires or at least delayed out.

Claims (5)

Mehradrige flexible elektrische Leitung mit einem zentralen Tragelement (3), mehreren das Tragelement (3) umgebenden Adern (1) aus isolierten feindrähtigen Leitern sowie einem Kunststoffmantel (5), bei welchem das zentrale Tragelement (3) aus einem drehungsfreien Stahlseil (3a) besteht, das mit einer äußeren Isolierschicht (3b) versehen ist, dadurch gekennzeichnet, daß das Stahlseil (3a) aus einer Kernlitze (6), einer ersten auf die Kernlitze (6) aufgeseilten Lage aus mehreren Litzen (7) und einer auf die erste Lage aufgeseilten zweiten Lage aus einer Vielzahl von Litzen (10) besteht, wobei die Verseilrichtung und/oder die Verseillänge der Litzen (10) der zweiten Lage von der Verseilrichtung und/oder der Verseillage der Litzen (7) der ersten Lage abweicht.Multi-conductor flexible electrical line having a central support element (3), a plurality of conductors (1) surrounding the support element (3) made of insulated fine-stranded conductors and a plastic jacket (5), in which the central support element (3) consists of a rotation-free steel cable (3a) , which is provided with an outer insulating layer (3b), characterized in that the steel cable (3a) consists of a core strand (6), a first stranded on the core strand (6) layer of a plurality of strands (7) and one on the first layer aufgeseilten second layer of a plurality of strands (10), wherein the stranding and / or Verseillänge the strands (10) of the second layer of the stranding direction and / or the Verseillage the strands (7) of the first layer deviates. Mehradrige Leitung nach Anspruch 1, dadurch gekennzeichnet, daß in den Verseilzwickeln der ersten Lage weitere Litzen (8) angeordnet sind, deren Durchmesser geringer ist als der Durchmesser der Litzen (7) der ersten Lage, und daß die Litzen (7) der ersten Lage und die weiteren Litzen (8) eine gemeinsame Umhüllende von innen tangieren.Multicore cable according to claim 1, characterized in that in the stranding of the first layer further strands (8) are arranged whose diameter is smaller than the diameter of the strands (7) of the first layer, and that the strands (7) of the first layer and the other strands (8) tangent to a common envelope from the inside. Mehradrige Leitung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß zwischen den Adern (1) Schutzleiter (2) angeordnet sind.Multicore cable according to Claim 1 or 2, characterized in that protective conductors (2) are arranged between the wires (1). Mehradrige Leitung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Isolierung der Adern (1) aus Ethylen-Propylen.Gummi (EPR) besteht.Multicore cable according to one of Claims 1 to 3, characterized in that the insulation of the cores (1) consists of ethylene-propylene rubber (EPR). Mehradrige Leitung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Außenmantel (5) aus zwei Schichten (5a,5b) aus einem Kautschuk besteht, und daß zwischen den zwei Schichten (5a,5b) ein Torsionsschutzgeflecht (4) aus hoch zugfesten Kunststofffäden eingebettet ist.Multicore cable according to one of claims 1 to 4, characterized in that the outer jacket (5) consists of two layers (5a, 5b) of a rubber, and in that between the two layers (5a, 5b) a torsion protection braid (4) of high tensile plastic threads is embedded.
EP04292581A 2004-10-29 2004-10-29 Multiconductor flexible electrical cable Expired - Lifetime EP1653483B1 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
DE502004002397T DE502004002397D1 (en) 2004-10-29 2004-10-29 Multi-conductor flexible electric cable
EP04292581A EP1653483B1 (en) 2004-10-29 2004-10-29 Multiconductor flexible electrical cable
PL04292581T PL1653483T3 (en) 2004-10-29 2004-10-29 Multiconductor flexible electrical cable
AT04292581T ATE349061T1 (en) 2004-10-29 2004-10-29 MULTI-CORE FLEXIBLE ELECTRICAL CABLE
DK04292581T DK1653483T3 (en) 2004-10-29 2004-10-29 Flexible electric multi-conductor cable
CNA2005101138842A CN1767082A (en) 2004-10-29 2005-10-21 Flexible multicore electrical cable
CA002524744A CA2524744A1 (en) 2004-10-29 2005-10-26 Flexible multicore electrical cable
US11/259,377 US7180002B2 (en) 2004-10-29 2005-10-26 Flexible multicore electrical cable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04292581A EP1653483B1 (en) 2004-10-29 2004-10-29 Multiconductor flexible electrical cable

Publications (2)

Publication Number Publication Date
EP1653483A1 true EP1653483A1 (en) 2006-05-03
EP1653483B1 EP1653483B1 (en) 2006-12-20

Family

ID=34931491

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04292581A Expired - Lifetime EP1653483B1 (en) 2004-10-29 2004-10-29 Multiconductor flexible electrical cable

Country Status (8)

Country Link
US (1) US7180002B2 (en)
EP (1) EP1653483B1 (en)
CN (1) CN1767082A (en)
AT (1) ATE349061T1 (en)
CA (1) CA2524744A1 (en)
DE (1) DE502004002397D1 (en)
DK (1) DK1653483T3 (en)
PL (1) PL1653483T3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2492923A3 (en) * 2011-02-23 2014-10-01 Leoni Studer AG Electrical cable, preferably for an operating voltage of greater than 1000 V

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9123458B2 (en) * 2009-06-09 2015-09-01 Essential Sound Products, Inc. Power cable
CN101697290B (en) * 2009-10-23 2012-04-04 上海汉威康桥电线电缆有限公司 Compact lead twisting method
US7744404B1 (en) 2009-11-03 2010-06-29 Merchandising Technologies, Inc. Cable management system for product display
EP2495733B1 (en) * 2011-03-03 2014-04-30 Nexans Flexible electric cable
US10706694B2 (en) * 2011-12-21 2020-07-07 Mobile Tech, Inc. Security/tether cable
US20130220665A1 (en) * 2012-02-24 2013-08-29 Oceaneering International, Inc. Multicore electrical cable and method of manufacture
KR20140115034A (en) * 2013-03-20 2014-09-30 엘에스전선 주식회사 Cable having a reinforcement element
JP2016095992A (en) * 2014-11-13 2016-05-26 日立金属株式会社 Electric wire and cable
CN106297972A (en) * 2015-05-20 2017-01-04 铄程智能科技（上海）有限公司 A kind of for servo-electric torque fastener compound motion cable
CN105810300A (en) * 2016-04-18 2016-07-27 安徽龙庵电缆集团有限公司 Cable for construction elevator
JP2019139852A (en) * 2018-02-06 2019-08-22 トヨタ自動車株式会社 Wiring, and vehicle having same

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US4196307A (en) * 1977-06-07 1980-04-01 Custom Cable Company Marine umbilical cable
US5408560A (en) * 1993-02-26 1995-04-18 N.V. Bekaert S.A. Tensile member for communication cables

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DE3151235A1 (en) * 1981-12-21 1983-06-30 Siemens AG, 1000 Berlin und 8000 München FLEXIBLE ELECTRICAL LINE
DE3335325A1 (en) * 1983-09-27 1985-04-04 Siemens AG, 1000 Berlin und 8000 München FLEXIBLE POWER LINE WITH PROFILE CORE AND CARRIER
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2492923A3 (en) * 2011-02-23 2014-10-01 Leoni Studer AG Electrical cable, preferably for an operating voltage of greater than 1000 V

Also Published As

Publication number Publication date
CN1767082A (en) 2006-05-03
US20060131062A1 (en) 2006-06-22
PL1653483T3 (en) 2007-05-31
CA2524744A1 (en) 2006-04-29
DE502004002397D1 (en) 2007-02-01
ATE349061T1 (en) 2007-01-15
US7180002B2 (en) 2007-02-20
EP1653483B1 (en) 2006-12-20
DK1653483T3 (en) 2007-03-05

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