US3842584A - Strand for a wire cable of synthetic wires and synthetic fibres - Google Patents
Strand for a wire cable of synthetic wires and synthetic fibres Download PDFInfo
- Publication number
- US3842584A US3842584A US00369690A US36969073A US3842584A US 3842584 A US3842584 A US 3842584A US 00369690 A US00369690 A US 00369690A US 36969073 A US36969073 A US 36969073A US 3842584 A US3842584 A US 3842584A
- Authority
- US
- United States
- Prior art keywords
- wires
- strand
- fibres
- coarse
- 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
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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
- D07B1/02—Ropes built-up from fibrous or filamentary material, e.g. of vegetable origin, of animal origin, regenerated cellulose, plastics
-
- 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
- This invention relates to a strand for a wire cable of synethetic wires and synthetic fibres, comprising a core which consists of a bundle of untwisted fine fibres arranged in parallel, a layer of coarse wires spirally surrounding the core, and at least one other layer of coarse wires concentrically and spirally surrounding the first layer.
- Wire cables composed of such strands are used for pulling or lifting loads and for fastening goods, but they are mainly used on ships particularly in mooring ships in harbour. As the sizes of ship increase, so accordingly do the forces which have to be taken by mooring cables.
- lt is an object of this invention to provide a strand for wire cables made of synthetic wires and synthetic fibres which will be able to take much greaterforces, namely up to 1000 t or more and which is constructed so that the cabling loss does not increase and the specific strength and breaking length can be kept constant, independent of the diameter of the cable.
- the invention therefore provides a strand for a wire cable which comprises a core consisting of a bundle of untwisted synthetic fibres, a layer of coarse synthetic wires .spirally surrounding the core and at least one other layer of coarse wires concentrically and spirally surrounding the core, in which a layer of synthetic fibre bundles is arranged between the layers of coarse wires.
- the invention is based on the finding that in wire cables made of synthetic fibres and synthetic wires, the cabling loss is not a function of the cable diameter but a function of the component wire section.
- the definition that the breaking length of the cable decreases with increasing cable diameter would be valid for synthetic wire cables only if the cables were geometrically identical, i.e., if the percentage cross-section or percentage tensile strength of the central core, of the strand cores and of the wires were the same in all the cables.
- the materials which may be used for wires and fibres are mainly polyamide but also include polyethylene, polypropylene, polyurethane, polyesters and polycarbonate.
- a strand may also be made up of wires of dif ferent materials and, for example, the wires and fibres may be made of different synthetic materials.
- N is the number of wires per strand
- f is the ratio of the average specific weight of the fibre material to the average specific weight of the wire material.
- the function V is shown in the accompanying FIG. 1 for various wires in the strand.
- the strand according to the invention may be produced, for example, by passing a bundle of untwisted,
- fine fibres arranged in parallel as the core of the strand through the centre of a stranding machine and at the same time laying coarse wires which have no internal twist spirally around this coreat the'stranding point.
- This layer of coarse wires is surrounded by fine synthetic fibres placed in parallel and over this is placed a second layer of coarse wires by the same method as that used for laying the first layer.
- Several of these strands, preferably 6 to 8, are then placed spirally, each with an internal twist, about a central fibre core to produce round cables or joined together to form graded cables.
- the fibre bundles are arranged spirally.
- the fibre bundles are arranged with their axes parallel to the axis of the strand, and'according to a third embodiment they are doubled and twisted.
- the three varia tions are equivalent and the particular variation can in each case be selected according to the manufacturing facilities available.
- Fibre bundles which are arranged spirally or with the axes of the fibres parallel to the axis of the strand may also be doubled and twisted. In that case, any load acting on the strand will be taken up uniformly by all the elements.
- a protective twist is imparted to the fibre bundles. This method is well known and serves to facilitate the manufacturing process and prevent capillary splicing.
- the coarse wires in the outermost layer at least are arranged in bundles placed spirally around a core of fibres or a wire.
- This construction has the advantage that, in cables with a very large diameter, the individual wires in the layer of coarse wires can have a smaller diameter.
- Another advantage is the resulting increased flexibility. of the cable.
- filling twine is advantageously inserted between the bundles of coarse wires. The measure is known per 'se. It increases the strength of the cable and, by causing the formation of a sheet of fluff, it protects the cable against mechanical damage in use. I
- .filling twines are inserted in the crest of the outermost layer of wires. These serve the same function as the twines inserted between the bundles of coarse wires. They prevent damage to the surface of the cable and in particular damage due to heat of friction.
- FIG. 1 is a graph for the function V, defined by the equation supra, and which is described supra;
- FIG. 2 is an embodiment of a strand according to the invention.
- a layer 2 of coarse wires 3 is placed spirally around a core 1 which consists of a bundle of untwisted fine fibres arranged in parallel.
- This layer of coarse wires 2 is surrounded by a layer 4 of fibre bundles 5.
- These fibre bundles 5 are arranged spirally and doubled and twisted.
- Round the fibre bundles 5 is a layer 6 of coarse wires 3 arranged spirally.
- This layer is surrounded by a layer 7 of fibre bundles 8 which are arranged parallel to the axis and have a protective twist.
- this layer is surrounded by a layer 9 of coarse wires 3 which are arranged in separate bundles 10 each with a core 11 of fibres.
- the core 11 may alternatively consist of a wire.
- Filling twines 12 are placed between the bundles 10 of coarse wires.
- Filling twines 13 are also inserted between the crests of the outermost layer 9 of wire bundles 10. When the cable is in use, the filling twines 13 are spliced open to form a sheet of fluff which protects the surface of the cable against damage.
- a strand according to the embodiment illustrated in FIG. 2 is composed of polyamide wires and polyamide fibres.
- the density of the polyamide is 1.14 g/cm.
- the wires have a specific strength of 48 kg/mm.
- the fibres have a strength per unit titre of 8.5 g/dtex.
- the structure of the strand is as follows (based on FIG. 2):
- a strand having the construction of the example shown in FIG. 2 is composed of polypropylene wires and polypropylene fibres.
- the density of the polypropylene is 0.9 g/cm.
- the wires have a specific strength of 55 kg per mm
- the fibres have a strength per unit titre of 6 g/dtex.
- the structure of the strand is as follows (based on FIG. 2):
- a strand according to the example shown in FIG. 2 is made up of polyester wires and polyester fibres.
- the density of the polyester is 1.38 g/cm.
- the high strength fibres have a strength per unit titre of 8.5 g/dtex.
- the wires have a specific strength of 48 kg/mm
- the structure of the strand is as follows (based on FIG. 2):
- the total thickness of a strand is 22 332 dtex, made up of wir e amounting to 13 731 300 dtex and fibres amounting to 8 369 032 dtex.
- the compositiori of the material, based on the thickness, is therefore 62 percent of wire and 38 percent of fibres.
- Such strands are made up into a cable which has a central core of 46 101 000 dtex fibres.
- the cable has a weight of 8,150 g/m, a cable tensile strength of 748,312 kg and a cable breaking length of 33.6 kilometers.
- a strand for a wire cable which comprises a core comprising a bundle of untwisted synthetic fibres, a layer of coarse synthetic wires spirally surrounding the core and at least one other layer of coarse wires concentrically and spirally surrounding the core, in which a layer of synthetic fibre bundles is arranged between the layers of coarse wires.
- a strand as claimed in claim 1 in which the core of untwisted fibres are arranged in parallel.
- a strand as claimed in claim 1 in which the fibre bundles are arranged parallel to the axis between the layers of coarse wires.
- a strand as claimed in claim 1 in which the fibre bundles arranged between the layers of coarse wires are twisted and doubled.
- a strand as claimed in claim 1 in which the coarse wires in at least the outermost layer of the strand are arranged in spiral bundles each with a core.
- a strand as claimed in claim 7 in which filling twines are inserted, between the bundles of coarse wires.
- a strand as claimed in claim 7 in which filling twines are inserted between the crest of the outermost layer of wires.
- a strand as claimed in claim 1 in which the wires are polyamide, polyethylene, polypropylene, polyurethane, polyester or polycarbonate, and in which the fibres are polyamide, polyethylene, polypropylene, polyurethane, polyester or polycarbonate.
Landscapes
- Ropes Or Cables (AREA)
- Laminated Bodies (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Multicomponent Fibers (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2231968A DE2231968C3 (de) | 1972-06-29 | 1972-06-29 | Litze für ein Drahtseil aus synthetischen Drähten und synthetischen Fasern |
Publications (1)
Publication Number | Publication Date |
---|---|
US3842584A true US3842584A (en) | 1974-10-22 |
Family
ID=5849217
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00369690A Expired - Lifetime US3842584A (en) | 1972-06-29 | 1973-06-13 | Strand for a wire cable of synthetic wires and synthetic fibres |
Country Status (18)
Country | Link |
---|---|
US (1) | US3842584A (zh) |
JP (1) | JPS5753477B2 (zh) |
BE (1) | BE801515A (zh) |
CH (1) | CH566443A5 (zh) |
DD (1) | DD104580A5 (zh) |
DE (1) | DE2231968C3 (zh) |
DK (1) | DK136223C (zh) |
ES (1) | ES416425A1 (zh) |
FI (1) | FI51505C (zh) |
FR (1) | FR2191568A5 (zh) |
GB (1) | GB1430849A (zh) |
IE (1) | IE38693B1 (zh) |
IT (1) | IT990720B (zh) |
LU (1) | LU67740A1 (zh) |
NL (1) | NL174172C (zh) |
NO (1) | NO142920C (zh) |
SE (1) | SE389134B (zh) |
ZA (1) | ZA734403B (zh) |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4006289A (en) * | 1974-08-16 | 1977-02-01 | Consolidated Products Corporation | Electromechanical cable deployable in a no-torque condition, and method |
US4034547A (en) * | 1975-08-11 | 1977-07-12 | Loos August W | Composite cable and method of making the same |
US4085183A (en) * | 1975-05-05 | 1978-04-18 | Consolidated Products Corporation | Method of making a strain member for use in an electromechanical cable |
US4317000A (en) * | 1980-07-23 | 1982-02-23 | The United States Of America As Represented By The Secretary Of The Navy | Contrahelically laid torque balanced benthic cable |
US6266083B1 (en) * | 1986-05-21 | 2001-07-24 | Canon Kabushiki Kaisha | Image pickup apparatus including interruption means for causing recordation of an electrical image signal in response to operation of a second trigger before completion of a predetermined step by a first trigger |
US20020186436A1 (en) * | 2001-06-08 | 2002-12-12 | Sanjay Mani | Method and apparatus for multiplexing in a wireless communication infrastructure |
US20020191565A1 (en) * | 2001-06-08 | 2002-12-19 | Sanjay Mani | Methods and systems employing receive diversity in distributed cellular antenna applications |
US20040198453A1 (en) * | 2002-09-20 | 2004-10-07 | David Cutrer | Distributed wireless network employing utility poles and optical signal distribution |
US20080307723A1 (en) * | 2007-05-16 | 2008-12-18 | Smith Rory S | Actively Damped Tension Member |
US20120186851A1 (en) * | 2011-01-24 | 2012-07-26 | Michael Winterhalter | Composite core conductors and method of making the same |
CN109791817A (zh) * | 2016-09-29 | 2019-05-21 | 普睿司曼股份公司 | 具有轻质拉伸元件的线缆 |
CN110678602A (zh) * | 2017-01-27 | 2020-01-10 | 法策股份公司钢丝绳厂 | 纵向元件、尤其是用于牵引装置和/或承载装置的纵向元件 |
CN110924198A (zh) * | 2019-12-05 | 2020-03-27 | 芜湖航天特种电缆厂股份有限公司 | 电缆填充物及其制备方法 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2853661C2 (de) * | 1978-12-13 | 1983-12-01 | Drahtseilwerk Saar GmbH, 6654 Kirkel | Kunstfaserseil |
EP0150702B2 (de) * | 1984-02-01 | 1996-10-02 | Teufelberger Gesellschaft m.b.H. | Seil aus Fäden, Garnen oder Litzen aus textilem Fasermaterial |
-
1972
- 1972-06-29 DE DE2231968A patent/DE2231968C3/de not_active Expired
-
1973
- 1973-06-05 LU LU67740A patent/LU67740A1/xx unknown
- 1973-06-13 US US00369690A patent/US3842584A/en not_active Expired - Lifetime
- 1973-06-20 DD DD171688A patent/DD104580A5/xx unknown
- 1973-06-27 FI FI732053A patent/FI51505C/fi active
- 1973-06-27 JP JP48071824A patent/JPS5753477B2/ja not_active Expired
- 1973-06-27 IT IT25917/73A patent/IT990720B/it active
- 1973-06-27 BE BE132778A patent/BE801515A/xx not_active IP Right Cessation
- 1973-06-28 NO NO2686/73A patent/NO142920C/no unknown
- 1973-06-28 ZA ZA734403A patent/ZA734403B/xx unknown
- 1973-06-28 NL NLAANVRAGE7309041,A patent/NL174172C/xx not_active IP Right Cessation
- 1973-06-28 SE SE7309127*A patent/SE389134B/xx unknown
- 1973-06-28 IE IE1081/73A patent/IE38693B1/xx unknown
- 1973-06-28 ES ES416425A patent/ES416425A1/es not_active Expired
- 1973-06-28 DK DK360573A patent/DK136223C/da not_active IP Right Cessation
- 1973-06-28 GB GB3079073A patent/GB1430849A/en not_active Expired
- 1973-06-29 FR FR7324054A patent/FR2191568A5/fr not_active Expired
- 1973-06-29 CH CH953773A patent/CH566443A5/xx not_active IP Right Cessation
Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4006289A (en) * | 1974-08-16 | 1977-02-01 | Consolidated Products Corporation | Electromechanical cable deployable in a no-torque condition, and method |
US4085183A (en) * | 1975-05-05 | 1978-04-18 | Consolidated Products Corporation | Method of making a strain member for use in an electromechanical cable |
US4034547A (en) * | 1975-08-11 | 1977-07-12 | Loos August W | Composite cable and method of making the same |
US4317000A (en) * | 1980-07-23 | 1982-02-23 | The United States Of America As Represented By The Secretary Of The Navy | Contrahelically laid torque balanced benthic cable |
US6266083B1 (en) * | 1986-05-21 | 2001-07-24 | Canon Kabushiki Kaisha | Image pickup apparatus including interruption means for causing recordation of an electrical image signal in response to operation of a second trigger before completion of a predetermined step by a first trigger |
US7127175B2 (en) * | 2001-06-08 | 2006-10-24 | Nextg Networks | Method and apparatus for multiplexing in a wireless communication infrastructure |
US20020191565A1 (en) * | 2001-06-08 | 2002-12-19 | Sanjay Mani | Methods and systems employing receive diversity in distributed cellular antenna applications |
US20020186436A1 (en) * | 2001-06-08 | 2002-12-12 | Sanjay Mani | Method and apparatus for multiplexing in a wireless communication infrastructure |
US20040198453A1 (en) * | 2002-09-20 | 2004-10-07 | David Cutrer | Distributed wireless network employing utility poles and optical signal distribution |
US20080307723A1 (en) * | 2007-05-16 | 2008-12-18 | Smith Rory S | Actively Damped Tension Member |
US8110050B2 (en) | 2007-05-16 | 2012-02-07 | Thyssenkrupp Elevator Capital Corporation | Actively damped tension member |
US9362021B2 (en) * | 2011-01-24 | 2016-06-07 | Gift Technologies, Llc | Composite core conductors and method of making the same |
US20120186851A1 (en) * | 2011-01-24 | 2012-07-26 | Michael Winterhalter | Composite core conductors and method of making the same |
CN109791817A (zh) * | 2016-09-29 | 2019-05-21 | 普睿司曼股份公司 | 具有轻质拉伸元件的线缆 |
US20190228876A1 (en) * | 2016-09-29 | 2019-07-25 | Prysmian S.P.A. | Cable with Lightweight Tensile Elements |
US11189396B2 (en) * | 2016-09-29 | 2021-11-30 | Prysmian S.P.A. | Cable with lightweight tensile elements |
US11646132B2 (en) | 2016-09-29 | 2023-05-09 | Prysmian S.P.A. | Cable with lightweight tensile elements |
CN110678602A (zh) * | 2017-01-27 | 2020-01-10 | 法策股份公司钢丝绳厂 | 纵向元件、尤其是用于牵引装置和/或承载装置的纵向元件 |
CN110924198A (zh) * | 2019-12-05 | 2020-03-27 | 芜湖航天特种电缆厂股份有限公司 | 电缆填充物及其制备方法 |
Also Published As
Publication number | Publication date |
---|---|
IE38693L (en) | 1973-12-29 |
FI51505B (zh) | 1976-09-30 |
NO142920B (no) | 1980-08-04 |
IE38693B1 (en) | 1978-05-10 |
FI51505C (fi) | 1977-01-10 |
DK136223B (da) | 1977-09-05 |
JPS4948951A (zh) | 1974-05-11 |
NL174172C (nl) | 1984-05-01 |
DE2231968C3 (de) | 1980-11-13 |
FR2191568A5 (zh) | 1974-02-01 |
DD104580A5 (zh) | 1974-03-12 |
NL174172B (nl) | 1983-12-01 |
LU67740A1 (zh) | 1973-08-16 |
IT990720B (it) | 1975-07-10 |
JPS5753477B2 (zh) | 1982-11-12 |
SE389134B (sv) | 1976-10-25 |
ZA734403B (en) | 1974-06-26 |
CH566443A5 (zh) | 1975-09-15 |
DE2231968B2 (de) | 1980-03-20 |
NL7309041A (zh) | 1974-01-02 |
BE801515A (fr) | 1973-12-27 |
DK136223C (da) | 1978-02-06 |
ES416425A1 (es) | 1976-03-01 |
GB1430849A (en) | 1976-04-07 |
DE2231968A1 (de) | 1974-01-24 |
NO142920C (no) | 1980-11-12 |
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