EP0652989A1 - Verbesserte seele für drahtseil - Google Patents
Verbesserte seele für drahtseilInfo
- Publication number
- EP0652989A1 EP0652989A1 EP93901057A EP93901057A EP0652989A1 EP 0652989 A1 EP0652989 A1 EP 0652989A1 EP 93901057 A EP93901057 A EP 93901057A EP 93901057 A EP93901057 A EP 93901057A EP 0652989 A1 EP0652989 A1 EP 0652989A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- core
- strands
- central member
- plastics material
- 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.)
- Granted
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
-
- 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
- D07B1/0686—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core having a rope configuration characterised by the core design
-
- 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
- D07B2201/1032—Rope or cable structures characterised by the number of strands three to eight strands respectively forming a single layer
-
- 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
- D07B2201/2001—Wires or filaments
- D07B2201/2002—Wires or filaments characterised by their cross-sectional 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
- D07B2201/2036—Strands characterised by the use of different wires or filaments
- D07B2201/2037—Strands characterised by the use of different wires or filaments regarding the dimension of the wires or filaments
-
- 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
- D07B2201/2048—Cores characterised by their cross-sectional shape
- D07B2201/2049—Cores characterised by their cross-sectional shape having protrusions extending radially functioning as spacer between strands or 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
- D07B2201/2047—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
- D07B2201/2065—Cores characterised by their structure comprising a coating
-
- 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
- D07B2201/2067—Cores characterised by the elongation or tension behaviour
- D07B2201/2068—Cores characterised by the elongation or tension behaviour having a load bearing function
-
- 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
- D07B2201/2071—Spacers
- D07B2201/2073—Spacers in circumferencial direction
-
- 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
- D07B2205/2039—Polyesters
-
- 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
- D07B2205/3003—Glass
Definitions
- This invention relates to cores for wire ropes, particularly steel wire ropes.
- GB-A-2 219 014 describes a core for wire rope comprising a fluted member of polymeric or elastomeric material having helical grooves symmetrically spaced around its outer surface, each groove in cross-section (in a plane normal to the longitudinal axis of the core) having the form of an arc of a ellipse.
- the properties and control of manufacture of the core may be substantially improved by incorporating within the extrusion a reinforcing member or cord constituted by a fibre core or independent wire rope.
- the present invention provides a core for a wire rope, comprising a tubular outer member made of plastics material and a solid cylindrical central member made of plastics material, the outer member having a cylindrical inner surface in intimate contact with the central member and having a fluted outer surface with symmetrically spaced helical grooves for receiving respective wire strands of the rope.
- Figure 1 is a diagrammatic cross-section through a core for a wire rope
- Figure 2 is a diagrammatic cross-section through a wire rope incorporating the core.
- the core illustrated comprises a tubular outer member 1 o f plastics material ana a solid cylindrical central memoer 3 of plastics material.
- the outer member 1 has a cylindrical inner surface in intimate contact with the central member 3.
- the outer member 1 has a fluted outer surface with symmetrically spaced helical grooves 2 for receiving respective steel wire strands 4.
- each strand 4 is a round strand whose circumscribing envelope E - in a cross-section perpendicular to the strand axis - is a circle of diameter d 1 . Since each strand extends helically, the envelope E appears slightly elliptical in a cross-section in the plane of the drawings, which plane is perpendicular to the axis of the core. Each groove 2 - in a cross-section perpendicular to the groove - is an arc of a circle of diameter d 1 .
- the strand is a Dyform (Trade Mark - Bridon pic) strand which - in cross-section perpendicular to .its axis - has a compacted structure in which the outer wires 6 nave eternal edges 6a which are arcs of a circle of diameter d 1 .
- Dyform Trade Mark - Bridon pic
- conventional strands made up of round wires may be used instead.
- non-round strands may be used, with grooves o f suitable cross-section.
- the core having a solid cross-section provides good support to the strands 4.
- dimension d 1 represents the diameter cf the outer strands 4 of the rope and diameter d 2 denotes the root diameter of the fluted member 1, i.e. the minimum distance between the bottoms of any two diametrically opposing grooves.
- the minimum root diameter d 2 may be expressed as a function of the outer strand diameter d 1 .
- the exact relationship will depend primarily upon the number of outer strands in the rope and the lay angle (or pitch) at which they are closed together, although additional account may be taken of the strand construction and service duty. For example, different factors will be required for ropes in which the strands are of quasi-triangular shape. For the more common round-strand rope constructions and lays, the following relationships are recommended :
- the two members 1,3 may be made of the same type of plastics material or different types.
- the plastics material may, for example, be selected from the following types: Polypropylene
- the optimum blend of core properties may be obtained by using two dissimilar materials to produce the core.
- the outer member 1 may comprise a material with good elongation properties to accept the high bending strains and also be capable of deforming locally to provide close conformance with the surface geometry of the outer strands of the rope, whereas the central member 3 may be beneficially composed of a harder and more rigid material, perhaps incorporating reinforcing fibres.
- the core is preferably prepared in two separate extrusion operations, the first of which produces the solid cylindrical member 3.
- a lubricant or a release agent is applied to the solid cylindrical member 3. This is then fed into an extruder for a further operation which produces the fluted member 1, the central member 3 greatly assisting in the control of the second extrusion operation.
- the size of the central member 3 in relation to the size of the core may vary, so that one size of central member can be used for a range of core sizes, thereby achieving an economy in manufacturing costs.
- the cross-sectional area of the central member 3 is preferably at least 40% (more preferably at least 45%) and preferably at most 60% (more preferably at most 55%) of the cross-sectional area of the core, a convenient ratio being about 50% (enabling extrusion speeds to be equalised).
- the central member 3 preferably has a circular cross-section whose diameter d 1 is at least 70% (more preferably at least 75%) of the root diameter d preferably d 3 is at most 90% (more preferably 85%) of d 2 , a convenient ratio being about
Landscapes
- Ropes Or Cables (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Organic Insulating Materials (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9216482A GB2269400B (en) | 1992-08-03 | 1992-08-03 | Core for wire rope |
GB9216482 | 1992-08-03 | ||
PCT/GB1993/000008 WO1994003672A1 (en) | 1992-08-03 | 1993-01-06 | Improved core for wire rope |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0652989A1 true EP0652989A1 (de) | 1995-05-17 |
EP0652989B1 EP0652989B1 (de) | 1998-07-08 |
Family
ID=10719754
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93901057A Expired - Lifetime EP0652989B1 (de) | 1992-08-03 | 1993-01-06 | Verbesserte seele für drahtseil |
Country Status (12)
Country | Link |
---|---|
EP (1) | EP0652989B1 (de) |
JP (1) | JP3229055B2 (de) |
KR (1) | KR100250193B1 (de) |
AT (1) | ATE168148T1 (de) |
AU (1) | AU674295B2 (de) |
BR (1) | BR9306801A (de) |
CA (1) | CA2140937A1 (de) |
DE (1) | DE69319600D1 (de) |
GB (1) | GB2269400B (de) |
NO (1) | NO950264D0 (de) |
WO (1) | WO1994003672A1 (de) |
ZA (1) | ZA93896B (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11578458B2 (en) | 2018-03-06 | 2023-02-14 | Bridon International Limited | Synthetic rope |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2320933B (en) * | 1997-01-03 | 1999-04-07 | Bridon Plc | Manufacture of wire rope |
CA2269017A1 (en) * | 1998-04-20 | 1999-10-20 | Paul Ormon Sullivan | Lariat, lariat rope body, method and apparatus |
FR2783585B1 (fr) | 1998-09-23 | 2000-11-17 | Trefileurope | Cable mixte a ame synthetique pour le levage ou de traction |
KR100318184B1 (ko) * | 1999-11-26 | 2001-12-24 | 홍영철 | 플래스틱 코팅된 코어 로프를 갖는 와이어 로프의제조방법 및 그 장치 |
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 |
KR101065787B1 (ko) | 2011-03-14 | 2011-09-19 | (주)신흥이앤지 | 스트랜드부 상호 간의 마찰로 인한 마모를 방지할 수 있는 스트랜드부 분리 막이 구비되는 와이어 로프 |
CH708244B1 (de) * | 2013-06-28 | 2016-10-14 | Fatzer Ag | Drahtseil sowie ein Verfahren zu dessen Herstellung. |
JP6417362B2 (ja) * | 2016-05-30 | 2018-11-07 | 株式会社テザックワイヤロープ | 動索用ワイヤロープ |
WO2018051395A1 (ja) * | 2016-09-13 | 2018-03-22 | 東京製綱株式会社 | 動索用ワイヤロープおよびその製造方法 |
CN109295780A (zh) * | 2018-09-17 | 2019-02-01 | 江苏普乐菲塑料有限公司 | 一种高韧性的pp塑料绳 |
WO2020083893A1 (en) | 2018-10-23 | 2020-04-30 | Bekaert Advanced Cords Aalter Nv | Steel wire rope, coated steel wire rope and belt comprising steel wire rope |
JP7248502B2 (ja) * | 2019-05-28 | 2023-03-29 | 東京製綱株式会社 | ワイヤロープ用心材,ワイヤロープおよびその製造方法 |
JP2021075824A (ja) * | 2019-11-12 | 2021-05-20 | 東京製綱株式会社 | ワイヤロープ用心材およびワイヤロープ |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA570733A (en) * | 1959-02-17 | Columbian Rope Company | Plastic covered wire rope center | |
GB408291A (en) * | 1932-10-06 | 1934-04-06 | William Cormack Robertson | Improvements in or relating to trawl ropes |
DE2703670C2 (de) * | 1977-01-29 | 1983-11-10 | Drahtseilwerk Saar GmbH, 6654 Kirkel | Drahtseil mit einem in geschäumten Kunststoff eingehüllten Seilkern |
GB2219014B (en) * | 1988-05-19 | 1991-12-18 | Bridon Plc | Cores for wire ropes |
-
1992
- 1992-08-03 GB GB9216482A patent/GB2269400B/en not_active Expired - Fee Related
-
1993
- 1993-01-06 EP EP93901057A patent/EP0652989B1/de not_active Expired - Lifetime
- 1993-01-06 AT AT93901057T patent/ATE168148T1/de not_active IP Right Cessation
- 1993-01-06 CA CA002140937A patent/CA2140937A1/en not_active Abandoned
- 1993-01-06 AU AU32610/93A patent/AU674295B2/en not_active Ceased
- 1993-01-06 BR BR9306801A patent/BR9306801A/pt not_active Application Discontinuation
- 1993-01-06 DE DE69319600T patent/DE69319600D1/de not_active Expired - Lifetime
- 1993-01-06 KR KR1019950700302A patent/KR100250193B1/ko not_active IP Right Cessation
- 1993-01-06 WO PCT/GB1993/000008 patent/WO1994003672A1/en active IP Right Grant
- 1993-01-21 JP JP02609793A patent/JP3229055B2/ja not_active Expired - Fee Related
- 1993-02-09 ZA ZA93896A patent/ZA93896B/xx unknown
-
1995
- 1995-01-24 NO NO950264A patent/NO950264D0/no unknown
Non-Patent Citations (1)
Title |
---|
See references of WO9403672A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11578458B2 (en) | 2018-03-06 | 2023-02-14 | Bridon International Limited | Synthetic rope |
Also Published As
Publication number | Publication date |
---|---|
GB9216482D0 (en) | 1992-09-16 |
JPH06257078A (ja) | 1994-09-13 |
CA2140937A1 (en) | 1994-02-04 |
BR9306801A (pt) | 1998-12-08 |
JP3229055B2 (ja) | 2001-11-12 |
NO950264L (no) | 1995-01-24 |
AU674295B2 (en) | 1996-12-19 |
EP0652989B1 (de) | 1998-07-08 |
ZA93896B (en) | 1993-09-13 |
ATE168148T1 (de) | 1998-07-15 |
DE69319600D1 (de) | 1998-08-13 |
NO950264D0 (no) | 1995-01-24 |
AU3261093A (en) | 1994-03-03 |
GB2269400B (en) | 1995-09-27 |
GB2269400A (en) | 1994-02-09 |
KR100250193B1 (ko) | 2000-05-01 |
WO1994003672A1 (en) | 1994-02-17 |
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