GB1578858A - Wire-rope with load-carrying core fibres - Google Patents

Wire-rope with load-carrying core fibres Download PDF

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Publication number
GB1578858A
GB1578858A GB8575/77A GB857577A GB1578858A GB 1578858 A GB1578858 A GB 1578858A GB 8575/77 A GB8575/77 A GB 8575/77A GB 857577 A GB857577 A GB 857577A GB 1578858 A GB1578858 A GB 1578858A
Authority
GB
United Kingdom
Prior art keywords
rope
wire
steel
fibres
fibre
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
GB8575/77A
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.)
Elkem ASA
Original Assignee
Elkem Spigerverket AS
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 Elkem Spigerverket AS filed Critical Elkem Spigerverket AS
Publication of GB1578858A publication Critical patent/GB1578858A/en
Expired legal-status Critical Current

Links

Classifications

    • DTEXTILES; PAPER
    • D07ROPES; CABLES OTHER THAN ELECTRIC
    • D07BROPES OR CABLES IN GENERAL
    • D07B1/00Constructional features of ropes or cables
    • D07B1/14Ropes or cables with incorporated auxiliary elements, e.g. for marking, extending throughout the length of the rope or cable
    • D07B1/141Ropes or cables with incorporated auxiliary elements, e.g. for marking, extending throughout the length of the rope or cable comprising liquid, pasty or powder agents, e.g. lubricants or anti-corrosive oils or greases
    • D07B1/142Ropes or cables with incorporated auxiliary elements, e.g. for marking, extending throughout the length of the rope or cable comprising liquid, pasty or powder agents, e.g. lubricants or anti-corrosive oils or greases for ropes or rope components built-up from fibrous or filamentary material
    • DTEXTILES; PAPER
    • D07ROPES; CABLES OTHER THAN ELECTRIC
    • D07BROPES OR CABLES IN GENERAL
    • D07B1/00Constructional features of ropes or cables
    • D07B1/005Composite ropes, i.e. ropes built-up from fibrous or filamentary material and metal wires
    • DTEXTILES; PAPER
    • D07ROPES; CABLES OTHER THAN ELECTRIC
    • D07BROPES OR CABLES IN GENERAL
    • D07B1/00Constructional features of ropes or cables
    • D07B1/06Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
    • D07B1/0673Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core having a rope configuration
    • D07B1/0686Ropes 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
    • DTEXTILES; PAPER
    • D07ROPES; CABLES OTHER THAN ELECTRIC
    • D07BROPES OR CABLES IN GENERAL
    • D07B2201/00Ropes or cables
    • D07B2201/20Rope or cable components
    • D07B2201/2047Cores
    • D07B2201/2067Cores characterised by the elongation or tension behaviour
    • D07B2201/2068Cores characterised by the elongation or tension behaviour having a load bearing function
    • DTEXTILES; PAPER
    • D07ROPES; CABLES OTHER THAN ELECTRIC
    • D07BROPES OR CABLES IN GENERAL
    • D07B2205/00Rope or cable materials
    • D07B2205/20Organic high polymers
    • D07B2205/2046Polyamides, e.g. nylons
    • D07B2205/205Aramides
    • DTEXTILES; PAPER
    • D07ROPES; CABLES OTHER THAN ELECTRIC
    • D07BROPES OR CABLES IN GENERAL
    • D07B2401/00Aspects related to the problem to be solved or advantage
    • D07B2401/20Aspects related to the problem to be solved or advantage related to ropes or cables
    • D07B2401/2055Improving load capacity
    • DTEXTILES; PAPER
    • D07ROPES; CABLES OTHER THAN ELECTRIC
    • D07BROPES OR CABLES IN GENERAL
    • D07B2401/00Aspects related to the problem to be solved or advantage
    • D07B2401/20Aspects related to the problem to be solved or advantage related to ropes or cables
    • D07B2401/206Improving radial flexibility
    • DTEXTILES; PAPER
    • D07ROPES; CABLES OTHER THAN ELECTRIC
    • D07BROPES OR CABLES IN GENERAL
    • D07B2501/00Application field
    • D07B2501/20Application field related to ropes or cables
    • D07B2501/2061Ship moorings

Description

(54) WIRE-ROPE WITH LOAD-CARRYING CORE FIBRES (71) We ELKEM-SPIGERVERKET A/S, a Company incorporated under the laws of Norway of, Elkemhuset, Middelthunsgate 27, Oslo 3, Norway, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement: The invention relates to steel-wire-ropes with load-carrying core fibres.
A steel-wire-rope consists as known of several parts (or strands) which are laid helically around a central part (the core).
The parts (or strands) of which the steelwire-rope is built up, consist of wires and/or fibres or fibre yarns which are also laid helically around a central part or core.
The cores as well as a number of the strands can ccnsist of steel wire alone, or of fibre or fibre yarns, possibly also a combination of steel wire and fibre or fibre yarns.
Fibre or fibre yarns in the above mentioned combination is used in wire-rope where there is desired a flexible rope combined with lower weight as compared with a rope which is built up of only steel wires.
The fibre material which has been used up till now, that is natural fibre, e.g. sisal, manila, jute, hemp, cotton, etc., of manmade fibre, e.g. propylene, nylon 6 and 6.6, polyester, poly vinyl chloride and similar fibres of thermoplastic and/or thermosetting material, have physical properties, (breaking strength, elongation etc.) which are far below those of the steel wire, and these types of fibres can therefore not be used as loadcarrying elements. Their function has up till now been to carry the lubricants and/or impregnants which are necessary to prevent the penetration of moisture; which will cause corrosion, into the rope, and at the same time to prevent excessive friction between the fibres, and lubricate the steel wires from inside as the steel-wire-rope is used. The fibre core give important support to the cross-section crush resistance of the rope.
Accordingly the present invention provides a steel-wire-rope incorporating a core of aromatic polyamide fibres, which fibres act as load carrying elements. The polyamide fibres may be formed of material such as that known under the trade name ARENCA" or " KEVLAR", which materials have proved to ha e sufficient strength to be utilized as load-carrying elements together with the steel elements.
In this way there is obtained a flexible steel-wire-rope with low weight and high breaking strength, in which at the same time the fibres may be lubricated and/or impregnated with lubricant.
With certain so-called spring lay ropes produced according to the invention, there was obtained an increase in the breaking load of 113, whilst the weight of the rope is increased by only 17% in relation to the 1SO-standard.
In other types of steel wire rope which have been produced according to the invention there was obtained an increase in breaking load of 40--100% while the weight of the rope was only increased by 3-5% in relation to the ISO-standards.
The advantages derived from the invention are: 1. Considerable increase of the breaking load for most wire-rope constructions.
2. Higher flexibility, use of smaller winch drums, and saving of space.
3. Lower weight in relation to the breaking load as compared with known constructions.
4. Great advantages in use of steel wire-rope for anchorlines for off-shore drilling rigs, ships etc., on the deep sea, as the breaking length of the ropes will be considerably improved.
5. The invention can lead to a con siderable simplification in the production of steel wire ropes using a lower number of wires, in constructions where this new fibrecore act as a load-carrying member.
The load-carrying fibre elements in the rope may be made of aramids such as poly-p-benzamide, poly-p-phenylene terephthalamide and their copolymers.
WHAT WE CLAIM IS: 1. A steel-wire-rope incorporating a core of aromatic polyamide fibres, which fibres act as load-carrying elements.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (4)

**WARNING** start of CLMS field may overlap end of DESC **. (54) WIRE-ROPE WITH LOAD-CARRYING CORE FIBRES (71) We ELKEM-SPIGERVERKET A/S, a Company incorporated under the laws of Norway of, Elkemhuset, Middelthunsgate 27, Oslo 3, Norway, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement: The invention relates to steel-wire-ropes with load-carrying core fibres. A steel-wire-rope consists as known of several parts (or strands) which are laid helically around a central part (the core). The parts (or strands) of which the steelwire-rope is built up, consist of wires and/or fibres or fibre yarns which are also laid helically around a central part or core. The cores as well as a number of the strands can ccnsist of steel wire alone, or of fibre or fibre yarns, possibly also a combination of steel wire and fibre or fibre yarns. Fibre or fibre yarns in the above mentioned combination is used in wire-rope where there is desired a flexible rope combined with lower weight as compared with a rope which is built up of only steel wires. The fibre material which has been used up till now, that is natural fibre, e.g. sisal, manila, jute, hemp, cotton, etc., of manmade fibre, e.g. propylene, nylon 6 and 6.6, polyester, poly vinyl chloride and similar fibres of thermoplastic and/or thermosetting material, have physical properties, (breaking strength, elongation etc.) which are far below those of the steel wire, and these types of fibres can therefore not be used as loadcarrying elements. Their function has up till now been to carry the lubricants and/or impregnants which are necessary to prevent the penetration of moisture; which will cause corrosion, into the rope, and at the same time to prevent excessive friction between the fibres, and lubricate the steel wires from inside as the steel-wire-rope is used. The fibre core give important support to the cross-section crush resistance of the rope. Accordingly the present invention provides a steel-wire-rope incorporating a core of aromatic polyamide fibres, which fibres act as load carrying elements. The polyamide fibres may be formed of material such as that known under the trade name ARENCA" or " KEVLAR", which materials have proved to ha e sufficient strength to be utilized as load-carrying elements together with the steel elements. In this way there is obtained a flexible steel-wire-rope with low weight and high breaking strength, in which at the same time the fibres may be lubricated and/or impregnated with lubricant. With certain so-called spring lay ropes produced according to the invention, there was obtained an increase in the breaking load of 113, whilst the weight of the rope is increased by only 17% in relation to the 1SO-standard. In other types of steel wire rope which have been produced according to the invention there was obtained an increase in breaking load of 40--100% while the weight of the rope was only increased by 3-5% in relation to the ISO-standards. The advantages derived from the invention are:
1. Considerable increase of the breaking load for most wire-rope constructions.
2. Higher flexibility, use of smaller winch drums, and saving of space.
3. Lower weight in relation to the breaking load as compared with known constructions.
4. A steel-wire-rope substantially as herein described.
4. Great advantages in use of steel wire-rope for anchorlines for off-shore drilling rigs, ships etc., on the deep sea, as the breaking length of the ropes will be considerably improved.
5. The invention can lead to a con siderable simplification in the production of steel wire ropes using a lower number of wires, in constructions where this new fibrecore act as a load-carrying member.
The load-carrying fibre elements in the rope may be made of aramids such as poly-p-benzamide, poly-p-phenylene terephthalamide and their copolymers.
WHAT WE CLAIM IS:
1. A steel-wire-rope incorporating a core of aromatic polyamide fibres, which fibres act as load-carrying elements.
2. A steel-wire-rope according to Claim 1 in which the fibres are lubricated and/or impregnated with lubricant.
3. A steel-wire-rope according to Claim 1 or Claim 2 in which the fibres are made of poly-p-benzamide, poly-p-phenylene terephthalamide or their copolymers.
GB8575/77A 1976-03-02 1977-03-01 Wire-rope with load-carrying core fibres Expired GB1578858A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO760684A NO760684L (en) 1976-03-02 1976-03-02 ST} LTAU WITH LOADING FIBER ELEMENTS.

Publications (1)

Publication Number Publication Date
GB1578858A true GB1578858A (en) 1980-11-12

Family

ID=19882749

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8575/77A Expired GB1578858A (en) 1976-03-02 1977-03-01 Wire-rope with load-carrying core fibres

Country Status (12)

Country Link
AU (1) AU513676B2 (en)
CH (1) CH599393A5 (en)
DE (2) DE7706296U1 (en)
DK (1) DK86677A (en)
ES (1) ES456411A1 (en)
FI (1) FI59627C (en)
FR (1) FR2343080A1 (en)
GB (1) GB1578858A (en)
IT (1) IT1115263B (en)
NL (1) NL7702082A (en)
NO (1) NO760684L (en)
ZA (1) ZA771031B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001014630A1 (en) * 1999-08-26 2001-03-01 Otis Elevator Company Tension member for an elevator
WO2013029848A3 (en) * 2011-09-01 2013-04-25 Gustav Wolf Seil- Und Drahtwerke Gmbh & Co. Kg Elevator cable in the shape of a steel cable having a core made of high strength synthetic fibres
US9352935B2 (en) 1998-02-26 2016-05-31 Otis Elevator Company Tension member for an elevator

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3140103A1 (en) * 1981-10-09 1983-04-28 Roland 5000 Köln Lorkowski Angling line
DE3317708A1 (en) * 1983-05-16 1984-11-29 Akzo Gmbh, 5600 Wuppertal Reinforcing cable comprising at least two components
EP0126965B1 (en) * 1983-05-16 1989-03-15 Akzo Patente GmbH Reinforcement cord made of at least two components
DE3410703A1 (en) * 1984-03-23 1985-10-03 Akzo Gmbh, 5600 Wuppertal Reinforcing cable consisting of at least two components
ZA862009B (en) * 1985-04-15 1986-10-29 Otis Elevator Co Composite cable for rope-drawn transportation system
AT407761B (en) * 1989-10-31 2001-06-25 Teufelberger Seil Ges M B H Wire rope

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9352935B2 (en) 1998-02-26 2016-05-31 Otis Elevator Company Tension member for an elevator
WO2001014630A1 (en) * 1999-08-26 2001-03-01 Otis Elevator Company Tension member for an elevator
WO2013029848A3 (en) * 2011-09-01 2013-04-25 Gustav Wolf Seil- Und Drahtwerke Gmbh & Co. Kg Elevator cable in the shape of a steel cable having a core made of high strength synthetic fibres

Also Published As

Publication number Publication date
DE2708904A1 (en) 1977-09-08
ZA771031B (en) 1978-01-25
FI59627C (en) 1981-09-10
NL7702082A (en) 1977-09-06
FR2343080B1 (en) 1981-11-13
ES456411A1 (en) 1978-07-01
DK86677A (en) 1977-09-03
FI59627B (en) 1981-05-29
IT1115263B (en) 1986-02-03
NO760684L (en) 1977-09-05
CH599393A5 (en) 1978-05-31
FI770648A (en) 1977-09-03
AU2283877A (en) 1978-09-07
FR2343080A1 (en) 1977-09-30
DE7706296U1 (en) 1977-06-16
AU513676B2 (en) 1980-12-18

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee