EP0261550B1 - Drahtseil für einen hängenden Einsatz über eine grosse Höhendifferenz, insbesondere Förderkorbseil, Tiefseeseil oder Seilbahnseil - Google Patents

Drahtseil für einen hängenden Einsatz über eine grosse Höhendifferenz, insbesondere Förderkorbseil, Tiefseeseil oder Seilbahnseil Download PDF

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Publication number
EP0261550B1
EP0261550B1 EP87113443A EP87113443A EP0261550B1 EP 0261550 B1 EP0261550 B1 EP 0261550B1 EP 87113443 A EP87113443 A EP 87113443A EP 87113443 A EP87113443 A EP 87113443A EP 0261550 B1 EP0261550 B1 EP 0261550B1
Authority
EP
European Patent Office
Prior art keywords
wire rope
lay
cable
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.)
Expired - Lifetime
Application number
EP87113443A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0261550A1 (de
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.)
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
Application filed by Drahtseilwerk Saar GmbH filed Critical Drahtseilwerk Saar GmbH
Priority to AT87113443T priority Critical patent/ATE58402T1/de
Publication of EP0261550A1 publication Critical patent/EP0261550A1/de
Application granted granted Critical
Publication of EP0261550B1 publication Critical patent/EP0261550B1/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
    • 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
    • D07B2201/00—Ropes or cables
    • D07B2201/10—Rope or cable structures
    • D07B2201/104—Rope or cable structures twisted
    • D07B2201/106—Pitch changing over length
    • 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

Definitions

  • the invention relates to a wire rope for hanging use over a large height difference, in particular with a lower end held against rotation, in particular a conveyor rope, deep-sea rope or cable car rope.
  • the invention has for its object to increase the structural strength of such a wire rope.
  • this purpose is achieved by changing the lay length over the rope length such that the load-specific torque of the wire rope decreases upwards.
  • the tensile force acting on the wire rope is equal to the payload at the lower end of the wire rope and the payload on the hanging length of the wire rope is increased by the weight of the wire rope below the point in question in each case.
  • In the upper area of the wire rope where the torque is greater than in the lower area, there is a greater tendency to untwist than in the lower area. This leads to untwisting in the upper area with further twisting in the lower area until equilibrium is reached. The untwisting in the upper area loosens the rope structure there. When running over rope sheaves or winding on rope drums, this leads to longitudinal displacements within the rope. Overall, there is damage that shortens the lifespan.
  • the invention is based on this knowledge and provides a remedy in such a way that the upward increase in the torque M is counteracted by an upward change in the rope structure, which is the load-specific torque ie the torque generated by the load unit, reduced upwards.
  • This basic principle is applicable to only one strand and to several strands of wire strands with the same lay direction, whereby in the latter apart from the outer strand layer also the inner or, if there are several inner strand layers, the next inner strand layer should have an increasing lay length.
  • the basic principle can also be used if one or more inner strand layers is or are present, which partly or all have the opposite direction of lay than the outer strand layer (s), but due to the dimensions and / or the structure has or have neutral turning behavior, ie is unable or are jointly able to generate substantial torque.
  • This basic principle can be used on its own if the remaining rope core itself does not generate any significant torque due to a special low-rotation structure, namely by reducing the lay lengths in the strands of the outer strand layer (s) and / or increasing the lay lengths in the rest of the strands Rope core upwards, which increases or decreases the elasticity of the strands even upwards.
  • this basic principle can also be used in competition with the effect of the first basic principle by reducing the lay lengths of the outer strand layer (s) upwards, which increases the elasticity of the strand layer (s) upwards and thus reduces it by reducing its share of the force absorption acts on the factor p, but at the same time increases the factor k according to the first basic principle. It depends on the structure of the rope as a whole which influence prevails and to what extent the second basic principle of relief can be applied in this way.
  • the first basic principle of the change in the force conversion determined by the lay length or the lay angle is, as is evident from the above, in competition with a relief which occurs at the same time, depending on the circumstances, according to the second basic principle.
  • the application of the basic principle of changing the force conversion therefore requires that no such relief can take place to any significant extent. This is the case with a single-layer rope with a fiber core or an otherwise sufficiently elastic core remaining under the relevant strand layer (s).
  • the application of the basic principle of relief requires a core rope remaining under the relevant strand layer (s), which, after its neutral turning behavior, is at least so much less elastic that it absorbs the intended additional load, and also the necessary metal cross-section having.
  • the third basic principle is always in competition with the first basic principle of changing the force conversion, according to which a load is shifted from the outer strand layer (s) to at least the next inner strand layer with the opposite lay direction:
  • the proportion of the load bearing capacity of the outer strand layer (s) decreases with their metal cross-section and diameter, which exceeds all other strand layers, usually absorbs or absorbs most of the load and generates the torque resulting in the rope.
  • the load portion shifted into the inner or next inner strand layer struck in the opposite direction increases upwards the portion of the counter-torque which arises in this strand layer.
  • the resulting torque then does not increase proportionally with the increase in rope weight. It can be kept constant.
  • the elasticity of the inner or next inner strand layer can be reduced by increasing the lay length of this strand layer.
  • the basic principle of the load shifting caused by a change in elasticity between the outer and the reverse lay direction of the inner or next inner strand layer can only be used if the inner or next inner strand layer is capable of its dimensions and its construction, a substantial torque to create. If, for example, the inner strand layer is part of a core rope, the diameter of which does not make up more than a third of the rope diameter, it can be neglected.
  • the specific load absorption in other words: the load distribution, is approximately uniform in the cable cross-section at the upper end of the cable and that the relatively greater load of individual strand layers necessarily associated with the described load shift then occurs in the lower regions of the wire cable where the load is less.
  • the lay length concerned can be changed step by step.
  • a cardiac cord 1 consists of a cardiac cord 2, an inner strand layer of six strands 3, a plastic sheathing 4 of the inner strand layer and an outer strand layer of ten strands 5 pressed into it.
  • the cardiac cord 2 and the strands 3 and 5 are compressed; the strands 5 are parallel lay strands.
  • the lay direction of the two strands is different. Both strands are stranded in a cross lay.
  • the average fill factor is 0.68, the stranding factor 0.84 and the weight factor 0.86.
  • the diameter of the core rope consisting of the cardiac cord 2 and the strands 3 is 14.8 mm.
  • the lay length factor (quotient of lay length and diameter) of the core rope is 6.3.
  • the share of the core rope in the total metal cross-section of the wire rope is 30%.
  • the free hanging rope length is set at 800 m.
  • the total rope weight is 2.5 t.
  • the rope safety should be 8. This results in a total load of 9.1 t and a payload of 6.6 t or a load on the wire rope on the highest rope cross section of 12.5% and on the lowest rope cross section of 9.1% of the calculated breaking strength.
  • FIG. 2 shows the torque occurring in the wire rope as a function of the load for different lay lengths.
  • the lay lengths must be matched to the loads on the wire rope at different heights in such a way that a horizontal line is obtained in the diagram in FIG. 2.
  • the greatest load is 12.5% of the calculated breaking strength of the wire rope and the smallest experimentally tested lay length, i.e. Lay length factor 5.9, chosen as starting point A. This results in point B between 7.0 and 7.7 for the lowest load of 9.1% and the same for the loads in between.
  • the first 80 m of the wire rope are made with a lay length factor of 5.9, the second 80 m with a lay length factor of 6.06, etc.

Landscapes

  • Ropes Or Cables (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Tents Or Canopies (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)
  • Supports For Pipes And Cables (AREA)
  • Chain Conveyers (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
EP87113443A 1986-09-23 1987-09-15 Drahtseil für einen hängenden Einsatz über eine grosse Höhendifferenz, insbesondere Förderkorbseil, Tiefseeseil oder Seilbahnseil Expired - Lifetime EP0261550B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87113443T ATE58402T1 (de) 1986-09-23 1987-09-15 Drahtseil fuer einen haengenden einsatz ueber eine grosse hoehendifferenz, insbesondere foerderkorbseil, tiefseeseil oder seilbahnseil.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863632298 DE3632298A1 (de) 1986-09-23 1986-09-23 Drahtseil fuer einen haengenden einsatz ueber eine grosse hoehendifferenz, insbesondere foerderkorbseil, tiefseeseil oder seilbahnseil
DE3632298 1986-09-23

Publications (2)

Publication Number Publication Date
EP0261550A1 EP0261550A1 (de) 1988-03-30
EP0261550B1 true EP0261550B1 (de) 1990-11-14

Family

ID=6310155

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87113443A Expired - Lifetime EP0261550B1 (de) 1986-09-23 1987-09-15 Drahtseil für einen hängenden Einsatz über eine grosse Höhendifferenz, insbesondere Förderkorbseil, Tiefseeseil oder Seilbahnseil

Country Status (11)

Country Link
US (1) US4827708A (no)
EP (1) EP0261550B1 (no)
AT (1) ATE58402T1 (no)
AU (1) AU597726B2 (no)
CA (1) CA1301026C (no)
DE (2) DE3632298A1 (no)
DK (1) DK167400B1 (no)
ES (1) ES2018524B3 (no)
GR (1) GR3001479T3 (no)
NO (1) NO169554C (no)
ZA (1) ZA877159B (no)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5131218A (en) * 1990-07-16 1992-07-21 American Manufacturing Company, Inc. Sinking/floating rope
TW305377U (en) * 1993-10-13 1997-05-11 Tokyo Rope Mfg Co Wire rope which is hard to twist
IL132299A (en) * 1998-10-23 2003-10-31 Inventio Ag Stranded synthetic fiber rope
US6182432B1 (en) * 1999-02-19 2001-02-06 Minoru Takahashi Hauling cord
US6339920B1 (en) * 1999-08-27 2002-01-22 Kawasaki Steel Corporation Rotation-resisting wire rope
CA2298945C (en) * 2000-02-18 2004-11-02 Wire Rope Industries Ltd. - Industries De Cables D'acier Ltee Wire rope with reverse jacketed iwrc
FI118732B (fi) * 2000-12-08 2008-02-29 Kone Corp Hissi
US9573792B2 (en) * 2001-06-21 2017-02-21 Kone Corporation Elevator
CA2430325C (en) * 2001-06-21 2010-09-07 Kone Corporation Elevator
FI119234B (fi) * 2002-01-09 2008-09-15 Kone Corp Hissi
DE102004047077B4 (de) * 2004-09-28 2010-09-16 Casar Drahtseilwerk Saar Gmbh Verfahren zum Herstellen eines Drahtseils
JP4799208B2 (ja) * 2005-03-11 2011-10-26 株式会社ハイレックスコーポレーション 操作用インナーケーブル
DE102007024020A1 (de) 2007-05-18 2008-11-20 Casar Drahtseilwerk Saar Gmbh Seil, kombiniertes Seil aus Kunststofffasern und Stahldrahtlitzen, sowie kombinierte Litze aus Kunststofffasern und Stahldrähten
WO2012059284A1 (en) * 2010-11-05 2012-05-10 Nv Bekaert Sa Compacted hybrid elevator rope
US10906353B2 (en) 2014-07-28 2021-02-02 Bridgestone Corporation Steel cord for reinforcing rubber article
JP6400972B2 (ja) * 2014-07-28 2018-10-03 株式会社ブリヂストン ゴム物品補強用スチールコード
JP6545942B2 (ja) * 2014-10-01 2019-07-17 株式会社ブリヂストン ゴム物品補強用スチールコードおよびそれを用いた空気入りタイヤ
CN107923124A (zh) * 2016-05-11 2018-04-17 朝日英达科株式会社 金属丝线
WO2019038665A1 (en) * 2017-08-21 2019-02-28 Scaw South Africa (Pty) Ltd TRAINING BODY CABLE AND SHOVEL

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US861230A (en) * 1906-02-26 1907-07-23 Alexander B Allan Wire rope.
US1786936A (en) * 1928-07-07 1930-12-30 Roeblings John A Sons Co Tapered wire rope and method of making the same
US2181344A (en) * 1938-10-10 1939-11-28 American Mfg Co Rope
US2407634A (en) * 1943-04-05 1946-09-17 All American Aviat Inc Shock absorbing aerial towline
US2562340A (en) * 1950-06-17 1951-07-31 Jones & Laughlin Steel Corp Weight-graduated wire cable
US3374619A (en) * 1966-04-27 1968-03-26 United States Steel Corp Torque balanced rope
GB1386851A (no) * 1972-03-22 1975-03-12 Od Politekhn I Lifting Wire Ro
US4365467A (en) * 1980-12-12 1982-12-28 Armco Inc. Rotation resistant wire rope
DE3117452A1 (de) * 1981-05-02 1982-11-18 Drahtseilwerk Saar GmbH, 6654 Kirkel Drahtseil aus einem kernseil und einer darauf verseilten aeusseren litzenlage, insbesondere drehungsfreies drahtseil

Also Published As

Publication number Publication date
NO873717D0 (no) 1987-09-07
ES2018524B3 (es) 1991-04-16
DK498187A (da) 1988-03-24
ZA877159B (en) 1988-03-24
AU7894487A (en) 1988-03-31
AU597726B2 (en) 1990-06-07
DE3766206D1 (de) 1990-12-20
DK498187D0 (da) 1987-09-22
NO873717L (no) 1988-03-24
GR3001479T3 (en) 1992-10-08
ATE58402T1 (de) 1990-11-15
NO169554C (no) 1992-07-08
CA1301026C (en) 1992-05-19
US4827708A (en) 1989-05-09
DE3632298A1 (de) 1988-04-07
NO169554B (no) 1992-03-30
EP0261550A1 (de) 1988-03-30
DK167400B1 (da) 1993-10-25

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