EP1606449A1 - Steel-wire rope - Google Patents

Steel-wire rope

Info

Publication number
EP1606449A1
EP1606449A1 EP04721160A EP04721160A EP1606449A1 EP 1606449 A1 EP1606449 A1 EP 1606449A1 EP 04721160 A EP04721160 A EP 04721160A EP 04721160 A EP04721160 A EP 04721160A EP 1606449 A1 EP1606449 A1 EP 1606449A1
Authority
EP
European Patent Office
Prior art keywords
layer
strand
plastic
wire rope
strand layer
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
EP04721160A
Other languages
German (de)
French (fr)
Other versions
EP1606449B1 (en
Inventor
Roland Verreet
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.)
Casar Drahtseilwerk Saar GmbH
Original Assignee
Casar Drahtseilwerk Saar GmbH
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 Casar Drahtseilwerk Saar GmbH filed Critical Casar Drahtseilwerk Saar GmbH
Publication of EP1606449A1 publication Critical patent/EP1606449A1/en
Application granted granted Critical
Publication of EP1606449B1 publication Critical patent/EP1606449B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/16—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

Definitions

  • the invention relates to a wire rope, in particular in normal design, with an inner strand layer, in particular stranded on a core strand, and a plastic padding under the outer strand layer.
  • the padding reduces the surface pressure at wire crossings between the outer and the inner layer of strands.
  • a plastic intermediate layer is produced by extruding a thermoplastic plastic on a core rope and later stranding the outer strand layer while being pressed into the, again heated, plastic.
  • DE 23 26 742 deals with the production of a plastic intermediate layer in a wire rope in parallel design, in which the inner and the outer strand layer have to be stranded in one operation. The plastic is previously extruded onto the individual strands of the inner strand layer. During stranding, it is heated and squeezed out to form a continuous intermediate layer.
  • DE 39 34 270 proposes to achieve the same result only with a plastic-coated core strand. The plastic should squeeze out of the core strand between the strands of the inner strand layer as far as the outer strand layer.
  • the invention has for its object to provide another type of padding that requires the least possible effort. According to the invention, this purpose is achieved in that the outer wires of the strands of the inner strands are sheathed with plastic in a Dra tseil of the type mentioned.
  • the plastic will usually be a not too soft thermoplastic. Thermosets are also possible.
  • the drawing shows an embodiment of the invention. It shows a wire rope in a cross section.
  • An outer strand layer 4 consisting of eight parallel lay strands 5 l + (6 + 6) + 12 is stranded on a core rope consisting of a parallel lay strand 1 1 + 8 + 8 as a core strand and a strand layer 2 composed of six parallel lay strands 3 1 + 8 + 8.
  • the outer wires 6 of the strands 3 are provided with a plastic sheath 7.
  • the plastic sheath 7 lies between the metal surfaces. It reduces the surface pressure.
  • the stranding of the outer strand layer in the normal manner can take place in the same direction of rotation as the inner strand layer with different lay length or in the opposite direction. In the latter case, the inventive measure would be particularly advantageous. The measure is also advantageous when the inner and outer strand layers are stranded in parallel.

Landscapes

  • Ropes Or Cables (AREA)

Abstract

The invention relates to a steel-wire rope, in particular to a standard product in which the external threads (6) of the strands (3) of an internal strand layer (2) are provided wit a plastic coating (7). The use of said plastic coating which is limited in the quantity and volume thereof in the steel-wire rope makes it possible to arrange an intermediate plastic layer used as a covering between the external strand layer and the internal strand layer at all thread crossings, and also between the internal strand layer and a central strand or a dipper strand layer.

Description

Beschreibung:Description:
CÄSAR Drαhtseilwerk Sααr GmbH, D-66459 Kirkel (Deutschland)CÄSAR Drαhtseilwerk Sααr GmbH, D-66459 Kirkel (Germany)
„Drahtseil""Wire rope"
Die Erfindung betrifft ein Drahtseil, insbesondere in Normalmachart, mit einer, insbesondere auf einer Kernlitze verseilten, inneren Litzenlage und einer Kunststoffpolsterung unter der äußeren Litzenlage.The invention relates to a wire rope, in particular in normal design, with an inner strand layer, in particular stranded on a core strand, and a plastic padding under the outer strand layer.
Solche Drahtseile sind in verschiedenen Ausführungen bekannt. Die Polsteru ng vermindert die Flächenpressung an Drahtuberkreuzungen zwischen der äußeren und der inneren Litzenlage.Such wire ropes are known in various designs. The padding reduces the surface pressure at wire crossings between the outer and the inner layer of strands.
Nach der DE 22 02 823 wird eine Kunststoff-Zwischenlage erzeugt, indem ein thermoplastischer Kunststoff auf einem Kernseil extrudiert wird und später die äußere Litzenlage unter Eindrücken in den, wieder erwärmten, Kunststoff verseilt wird. Die DE 23 26 742 hat die Erzeugung einer Kunststoff-Zwischenlage in einem Drahtseil in Parallel-Machart zum Inhalt, bei dem die innere und die äußere Litzenlage in einem Arbeitsgang verseilt werden müssen. Der Kunststoff wird vorher auf den einzelnen Litzen der inneren Litzenlage extrudiert. Beim Verseilen wird er erwärmt und zu einer durchgehenden Zwischenlage ausgequetscht. In der DE 39 34 270 ist vorgeschlagen, das gleiche Ergebnis nur mit einer kunststoffummantelten Kernlitze zu erzielen. Der Kunststoff soll sich beim Verseilen von der Kernlitze aus zwischen den Litzen der inneren Litzenlage herausquetschen bis an die äußere Litzenlage.According to DE 22 02 823, a plastic intermediate layer is produced by extruding a thermoplastic plastic on a core rope and later stranding the outer strand layer while being pressed into the, again heated, plastic. DE 23 26 742 deals with the production of a plastic intermediate layer in a wire rope in parallel design, in which the inner and the outer strand layer have to be stranded in one operation. The plastic is previously extruded onto the individual strands of the inner strand layer. During stranding, it is heated and squeezed out to form a continuous intermediate layer. DE 39 34 270 proposes to achieve the same result only with a plastic-coated core strand. The plastic should squeeze out of the core strand between the strands of the inner strand layer as far as the outer strand layer.
Der Erfindung liegt die Aufgabe zugrunde, eine weitere Art der Polsterung zu schaffen, die einen möglichst geringen Aufwand erfordert. Gemäß der Erfindung wird dieser Zweck dadurch erfüllt, dass bei einem Dra tseil der eingangs genannten Art die Außendrähte der Litzen der inneren Litzenlaige mit Kunststoff ummantelt sind.The invention has for its object to provide another type of padding that requires the least possible effort. According to the invention, this purpose is achieved in that the outer wires of the strands of the inner strands are sheathed with plastic in a Dra tseil of the type mentioned.
Mit diesem örtlich und mengenmäßig beschränkten Einbringen von Kunststoff in das Drahtseil wird an allen Drahtuberkreuzungen zwischen der äußeren und der inneren Litzenlage und darüber hinaus zwischen der inneren Litzenlage und der Kernlitze oder einer nächstinneren Litzenlage eine polsternde Kunststoffzwischenschicht platziert. Der Aufwand dafür ist, insgesamt betrachtet, geringer als bei allen bisherigen Lösungen. Drähte können leicht schon beim Herstellen mit Kunststoff ummantelt werden z.B. im Tauchverfahren. Ihre Lagerhaltung in der Drahtseilerei hat bei z.B. nur 15% des Gewichtsanteils im Drahtseil keinen wesentliche Kosten verursachenden Umfang. Das Herstellen der Litzen und deren Verseilung wird nicht mit Ver- komplizierungen belastet. Es kommen keine besonderen Arbeitsgänge hinzu.With this local and quantitative introduction of plastic into the wire rope, a cushioning plastic intermediate layer is placed at all wire crossings between the outer and the inner strand layer and, moreover, between the inner strand layer and the core strand or a next inner strand layer. Overall, the effort for this is less than with all previous solutions. Wires can easily be covered with plastic during manufacture e.g. in the immersion process. Your warehousing in the wire rope factory only 15% of the weight portion in the wire rope does not cause significant cost. The production of the strands and their stranding is not burdened with complications. There are no special operations.
Der Kunststoff wird in der Regel ein nicht allzu weicher Thermoplast sein. Duroplaste kommen aber ebenfalls in Betracht.The plastic will usually be a not too soft thermoplastic. Thermosets are also possible.
Die Zeichnung gibt ein Ausführungsbeispiel der Erfindung wieder. Sie zeigt ein Drahtseil in einem Querschnitt.The drawing shows an embodiment of the invention. It shows a wire rope in a cross section.
Auf einem Kernseil aus einer Parallelschlaglitze 1 1 +8+8 als Kernlitze und einer Litzenlage 2 aus sechs Parallelschlaglitzen 3 1+8+8 ist eine äußere Litzenlage 4 aus acht Parallelschlaglitzen 5 l +(6+6)+ 12 in Normalmachart verseilt.An outer strand layer 4 consisting of eight parallel lay strands 5 l + (6 + 6) + 12 is stranded on a core rope consisting of a parallel lay strand 1 1 + 8 + 8 as a core strand and a strand layer 2 composed of six parallel lay strands 3 1 + 8 + 8.
Die Außendrähte 6 der Litzen 3 sind mit einer Kunststoffummantelung 7 versehen.The outer wires 6 of the strands 3 are provided with a plastic sheath 7.
An allen Stellen 8, an denen die Litzen 3 Berührung mit den Litzen 5 oder der Kern- litze 1 haben, liegt die Kunststoffummantelung 7 zwischen den Metalloberflächen. Sie vermindert die Flächenpressung.At all points 8 where the strands 3 come into contact with the strands 5 or the core strand 1, the plastic sheath 7 lies between the metal surfaces. It reduces the surface pressure.
Die Verseilung der äußeren Litzenlage in Normalmachart kann im gleichen Drehsinn wie die innere Litzenlage mit unterschiedlicher Schlaglänge oder im ent- gegengesetzten Drehsinn erfolgen. Für den letzteren Fall ist die Erfindungsmaß- nähme besonders vorteilhaft. Auch bei Parallelverseilung der inneren und d^r äußeren Litzenlage ist die Maßnahme von Vorteil. The stranding of the outer strand layer in the normal manner can take place in the same direction of rotation as the inner strand layer with different lay length or in the opposite direction. In the latter case, the inventive measure would be particularly advantageous. The measure is also advantageous when the inner and outer strand layers are stranded in parallel.

Claims

Patentanspruch:Claim:
Drahtseil, insbesondere in Normalmachart, mit einer, insbesondere auf einer Kernlitze (1 ) verseilten, inneren Litzenlage (2) und einer Kunststoffpolsterung (7) unter der äußeren Litzenlage (4), dadurch gekennzeichnet, dass die Außendrähte (6) der Litzen (3) der inneren Litzenlage (2) mit Kunststoff ummantelt (7) sind. Wire rope, in particular in the normal style, with an inner strand layer (2), in particular stranded on a core strand (1), and a plastic padding (7) under the outer strand layer (4), characterized in that the outer wires (6) of the strands (3 ) of the inner strand layer (2) are covered with plastic (7).
EP04721160A 2003-03-18 2004-03-17 Steel-wire rope Expired - Lifetime EP1606449B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10311733 2003-03-18
DE10311733A DE10311733A1 (en) 2003-03-18 2003-03-18 Wire rope
PCT/EP2004/002747 WO2004083517A1 (en) 2003-03-18 2004-03-17 Steel-wire rope

Publications (2)

Publication Number Publication Date
EP1606449A1 true EP1606449A1 (en) 2005-12-21
EP1606449B1 EP1606449B1 (en) 2008-10-08

Family

ID=32920862

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04721160A Expired - Lifetime EP1606449B1 (en) 2003-03-18 2004-03-17 Steel-wire rope

Country Status (4)

Country Link
EP (1) EP1606449B1 (en)
AT (1) ATE410541T1 (en)
DE (2) DE10311733A1 (en)
WO (1) WO2004083517A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009026730A1 (en) * 2007-08-31 2009-03-05 Brugg Kabel Ag Tensile body for static and dynamic loads
US9428858B2 (en) 2013-03-15 2016-08-30 1735729 Alberta Ltd. Wire rope and method of constructing wire rope

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2161151A5 (en) * 1971-11-16 1973-07-06 Saar Gmbh Drahtseilwerk
DE2326742C3 (en) * 1973-05-25 1985-05-30 Drahtseilwerk Saar GmbH, 6654 Kirkel Method for manufacturing a wire rope with an inner strand layer embedded in plastic
JP3724322B2 (en) * 2000-03-15 2005-12-07 株式会社日立製作所 Wire rope and elevator using it

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004083517A1 *

Also Published As

Publication number Publication date
ATE410541T1 (en) 2008-10-15
DE502004008202D1 (en) 2008-11-20
EP1606449B1 (en) 2008-10-08
DE10311733A1 (en) 2004-09-30
WO2004083517A1 (en) 2004-09-30

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