EP0111797B1 - Drahtseil mit einer Mehrzahl von Litzenlagen - Google Patents

Drahtseil mit einer Mehrzahl von Litzenlagen Download PDF

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Publication number
EP0111797B1
EP0111797B1 EP83112131A EP83112131A EP0111797B1 EP 0111797 B1 EP0111797 B1 EP 0111797B1 EP 83112131 A EP83112131 A EP 83112131A EP 83112131 A EP83112131 A EP 83112131A EP 0111797 B1 EP0111797 B1 EP 0111797B1
Authority
EP
European Patent Office
Prior art keywords
strands
rope
plastic
outer strands
wire rope
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
Application number
EP83112131A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0111797A1 (de
Inventor
Roland Dipl.-Ing. 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.)
Drahtseilwerk Saar GmbH
Original Assignee
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6180785&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0111797(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Drahtseilwerk Saar GmbH filed Critical Drahtseilwerk Saar GmbH
Priority to AT83112131T priority Critical patent/ATE20256T1/de
Publication of EP0111797A1 publication Critical patent/EP0111797A1/de
Application granted granted Critical
Publication of EP0111797B1 publication Critical patent/EP0111797B1/de
Expired 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
    • D07B1/06—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
    • D07B1/0673—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core having a rope configuration
    • D07B1/068—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core having a rope configuration characterised by the strand design
    • 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
    • D07B5/005—Making ropes or cables from special materials or of particular form characterised by their outer shape or surface properties
    • 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
    • D07B5/005—Making ropes or cables from special materials or of particular form characterised by their outer shape or surface properties
    • D07B5/006—Making ropes or cables from special materials or of particular form characterised by their outer shape or surface properties by the properties of an outer surface polymeric coating
    • 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
    • D07B2201/20—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
    • 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
    • D07B2401/2075—Reducing wear externally

Definitions

  • the invention relates to a wire rope with a plurality of strands.
  • Wire ropes are mainly used when running over rollers, but also on other guides, on drums, etc. Exposed to wear. This applies not only to the outer strand layer, but in the case of multi-layer ropes also to the inner strand layer (s) due to the support of the outer strand layer and the relative movement of the outer strands relative to the rope core comprising the inner strand layer (s) and, if necessary, within the rope core.
  • rope sheaths made of plastic are known, which should cushion the rope and protect the rest from corrosion.
  • Another means of protecting the wire ropes is to let them run over plastic rollers.
  • the plastic rollers very preferably protect the outer strands and especially their outer peripheral sections. This creates a dangerous uncertainty with regard to the timely detection of discard, because wire breaks already occur on the inside while everything is still intact on the outside.
  • the plastic rollers are susceptible to diagonal pull.
  • the invention is based on the object of protecting the outer strand layer of a multi-layer wire rope to a desired extent. Wire breaks in the outer strand layer should be recognizable. Other advantages are mentioned below.
  • the intended purpose is achieved in that, in a wire rope with a plurality of strand layers, at least one quarter and at most three quarters of the outer strands have a plastic sheath which projects beyond the circle of the wire rope circumscribing the other outer strands.
  • the outer strands of the rope are only partially protected by padding, namely the sheathed strands.
  • the other strands are protected to a certain extent by the fact that the encircling circle of the wire rope is surmounted by the sheathing and therefore does not carry them or carries them less.
  • the desired degree of protection of the outer strand layer can be set with the number ratio between the sheathed and the other strands and with the extent to which the sheaths protrude.
  • the uncovered strands allow wire breaks to be recognized by them without any hindrance.
  • the operation of the jackets can be included in the calculation.
  • the service life of the outer strand layer can be influenced in this as well as in that direction by varying the stress over time.
  • unsheathed strands these are also exposed to progressive contact and greater transverse pressures. If the originally covered strands are finally completely exposed on the outside, the stress on the strand layer is similar to that of a rope with normal outer strands. Then wire breaks can also be seen on the originally coated strands. For this reason, too, it is possible to provide for complete abrasion of the plastic coating.
  • The, increased, lifespan of the rope core can, since the lifespan of the outer strand layer can be adapted almost arbitrarily according to the above, can be implemented almost completely in the lifespan of the rope as a whole. With the service life of the outer strand layer, it is only necessary to remain slightly below that of the rope core in order to recognize that it is ready to take off.
  • Annoying scraps occur when the rope is worn compared to the sheathing of an entire rope only small amounts and dimensions of plastic are not present in a strand sheath.
  • the metallic cross-section of the plastic-sheathed outer strands will touch the circumscribed circle or be cut slightly so that the exposed strand continues to bear transverse forces.
  • a slight cutting of the circumscribing circle and protrusion may be necessary for carrying it to compensate for the elastic sinking of the strand into the plastic that is still present on its underside, which is to be expected in each case.
  • their metallic cross section can be kept completely within the circumscribed circle.
  • plastic-coated outer strands As secure and permanent support as possible on the rope core, they can be pressed into the rope cross-section by molding the plastic sheathing on the underside of the strand on the rope core, if necessary also with a slight flattening on the top of the rope.
  • the result of this procedure is particularly advantageous in that the plastic-coated outer strands are pressed into the rope cross-section while the plastic sheathing is thermally deformed on the previously heated rope core and / or the other, previously heated, outer strands.
  • the plastic then deforms exactly where it should and not where it should not: on the underside of the strand, it is pressed into the gaps between the strands due to the heating of the surrounding material, so that this does not happen first happen in the course of use and can loosen the rope structure, rather the strand immediately receives a firm, final bed, and on the unheated upper side the sheath is preserved, as it is.
  • a particularly advantageous embodiment of the invention consists of a Warrington-type rope with thicker and thinner outer strands, in which the smaller outer strands have the plastic sheathing. Because with this construction, the smaller strands mentioned only fill in gaps and have no load-bearing function, the rope structure is stable without them.
  • plastic-coated outer strands will be distributed as evenly as possible over the rope circumference.
  • the drawing shows an embodiment of the invention.
  • An inner strand layer of five strands 2 and an outer strand layer of five larger strands 2 and fifth smaller strands 4 are stranded on a core strand 1 in one operation.
  • the larger strands 3 lie in the grooves between the strands 2 of the inner strand layer.
  • the smaller strands 4 sit on the humps of the strands 2 in the spaces between the strands 3.
  • the strands 4 are provided with an extruded casing 5 made of plastic. They were pressed in during stranding in such a way that the sheathing on the underside of the strands 4 was slightly deformed, i.e. has adapted to the curvature of the strands 2 and has pressed something into the side in the interstices between the strands 2 and the strands 3.
  • the sheathing 5 projects beyond the circumscribing circle 6 of the metallic cable cross section.
  • the protrusion of the jackets 5 over the circumscribing circle 6 is 0.30 mm. In the case of the rope described, it could be changed approximately in a range from 0.10 to 0.50 mm, preferably from 0.20 to 0.40 mm. In the case of ropes of different diameters, these values would increase or decrease in proportion.

Landscapes

  • Ropes Or Cables (AREA)
  • Communication Cables (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Semiconductor Memories (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
EP83112131A 1982-12-16 1983-12-02 Drahtseil mit einer Mehrzahl von Litzenlagen Expired EP0111797B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83112131T ATE20256T1 (de) 1982-12-16 1983-12-02 Drahtseil mit einer mehrzahl von litzenlagen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19823246508 DE3246508A1 (de) 1982-12-16 1982-12-16 Drahtseil mit einer mehrzahl von litzenlagen
DE3246508 1982-12-16

Publications (2)

Publication Number Publication Date
EP0111797A1 EP0111797A1 (de) 1984-06-27
EP0111797B1 true EP0111797B1 (de) 1986-06-04

Family

ID=6180785

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83112131A Expired EP0111797B1 (de) 1982-12-16 1983-12-02 Drahtseil mit einer Mehrzahl von Litzenlagen

Country Status (5)

Country Link
EP (1) EP0111797B1 (da)
AT (1) ATE20256T1 (da)
DE (1) DE3246508A1 (da)
DK (1) DK163254C (da)
NO (1) NO166593C (da)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110753672A (zh) * 2017-06-08 2020-02-04 法尔福达高钢丝绳有限公司 用作电梯牵引绳的缆绳

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1348033A (en) * 1920-03-17 1920-07-27 George C Moon Wire rope
US2136865A (en) * 1936-10-22 1938-11-15 Malcolm W Reed Wire rope
GB586353A (da) * 1940-06-19 1900-01-01
DE1510073A1 (de) * 1963-04-27 1969-07-31 Alfred Dietz Litzenspiralseil
GB1145014A (en) * 1965-03-22 1969-03-12 Peter Philip Riggs Strand and rope production
US3482034A (en) * 1967-03-07 1969-12-02 Rochester Ropes Inc Conductive tow cable
DE2326742C3 (de) * 1973-05-25 1985-05-30 Drahtseilwerk Saar GmbH, 6654 Kirkel Verfahren zur Herstellung eines Drahtseils mit einer in einer Einbettung aus Kunststoff liegenden inneren Litzenlage
ATA203981A (de) * 1981-05-08 1982-10-15 Teufelberger Gmbh Mehrlagiges litzenseil in parallelmachart und verfahren zu seiner herstellung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110753672A (zh) * 2017-06-08 2020-02-04 法尔福达高钢丝绳有限公司 用作电梯牵引绳的缆绳

Also Published As

Publication number Publication date
DK163254B (da) 1992-02-10
NO834232L (no) 1984-06-18
DK163254C (da) 1992-06-29
DE3246508C2 (da) 1989-12-21
NO166593C (no) 1991-09-18
DE3246508A1 (de) 1984-06-20
DK583283D0 (da) 1983-12-16
EP0111797A1 (de) 1984-06-27
DK583283A (da) 1984-06-17
NO166593B (no) 1991-05-06
ATE20256T1 (de) 1986-06-15

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