US20170328000A1 - Wire rope - Google Patents

Wire rope Download PDF

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Publication number
US20170328000A1
US20170328000A1 US15/450,446 US201715450446A US2017328000A1 US 20170328000 A1 US20170328000 A1 US 20170328000A1 US 201715450446 A US201715450446 A US 201715450446A US 2017328000 A1 US2017328000 A1 US 2017328000A1
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US
United States
Prior art keywords
wire
metal element
wire rope
wires
core
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.)
Abandoned
Application number
US15/450,446
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English (en)
Inventor
Takaya Hashimoto
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.)
Asahi Intecc Co Ltd
Original Assignee
Asahi Intecc Co Ltd
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
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Application filed by Asahi Intecc Co Ltd filed Critical Asahi Intecc Co Ltd
Assigned to ASAHI INTECC CO., LTD. reassignment ASAHI INTECC CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HASHIMOTO, TAKAYA
Publication of US20170328000A1 publication Critical patent/US20170328000A1/en
Assigned to ASAHI INTECC CO., LTD. reassignment ASAHI INTECC CO., LTD. CHANGE OF ADDRESS Assignors: ASAHI INTECC CO., LTD.
Abandoned 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
    • 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
    • D07B1/0693—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core having a strand configuration
    • 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
    • D07B1/0606—Reinforcing cords for rubber or plastic articles
    • D07B1/0646—Reinforcing cords for rubber or plastic articles comprising longitudinally preformed wires
    • D07B1/0653—Reinforcing cords for rubber or plastic articles comprising longitudinally preformed wires in the core
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • 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
    • D07B1/0606—Reinforcing cords for rubber or plastic articles
    • D07B1/066—Reinforcing cords for rubber or plastic articles the wires being made from special alloy or special steel composition
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/09—Guide wires
    • A61M2025/09191—Guide wires made of twisted 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
    • D07B2201/2001—Wires or filaments
    • D07B2201/2009—Wires or filaments characterised by the materials used
    • 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
    • D07B2201/2014—Compound wires or compound 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
    • D07B2201/2015—Strands
    • D07B2201/2019—Strands pressed to 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
    • D07B2201/2047—Cores
    • D07B2201/2052—Cores characterised by their structure
    • D07B2201/2059—Cores characterised by their structure comprising 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
    • D07B2201/2066—Cores characterised by the materials used
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2207/00—Rope or cable making machines
    • D07B2207/40—Machine components
    • D07B2207/404—Heat treating devices; Corresponding methods
    • D07B2207/4045—Heat treating devices; Corresponding methods to change the crystal structure of the load bearing material
    • 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

Definitions

  • the disclosed embodiments relate to a wire rope comprising multiple metal element wires.
  • wire ropes In a conventional wire rope, multiple metal element wires are twisted together to form the wire rope.
  • wire ropes In general, wire ropes have advantages such as excellent impact resistance and good flexibility as compared with a single metal element wire. Further, wire ropes are often subjected to repeated bending, and thus desirably have good durability under such usage conditions.
  • Japanese Patent Application Laid-Open No. 2004-327254 describes an aluminum twisted wire (a wire rope) in which spaces between twisted wires inside an outermost aluminum twisted wire layer are filled with grease to improve the life time of the wire rope (see FIG. 1 and the like).
  • Japanese Patent Application Laid-Open No. H08-144182 describes a twisted wire rope having an improved life time, which can be prepared by (1) forming an uneven surface on each surface of multiple metal element wires, (2) forming element twisted wires by twisting the multiple metal element wires each having the uneven surface, (3) twisting the element twisted wires and then applying a resin coating around the twisted element twisted wires, and (4) filling spaces between the resin coating and the element twisted wires with grease (see FIG. 2 and others).
  • Japanese Patent Application Laid-Open No. 2004-124342 describes an inner wire rope having an improved abrasion resistance and the like, which can be prepared by subjecting side strands to deforestation processing to make surface contacts between a core strand and the side strands, and sealing lubricating oil between the core strand and the side strands (see FIG. 1 and the like).
  • wire ropes described in Japanese Patent Applications Laid-Open Nos. 2004-327254, H08-144182, and 2004-124342 cannot be used in medical devices to be inserted into a patient's body because these wire ropes are filled with grease within the wire ropes. Therefore, there is a need to develop a wire rope having an improved durability without containing grease for use in medical devices.
  • An object of the disclosed embodiments is to provide a wire rope having improved durability without containing grease, and in particular a wire rope with improved durability which can be used in a medical device to be inserted into a patient's body.
  • the disclosed embodiments include a wire rope comprising multiple metal element wires wound together, and in which the multiple metal element wires include at least one special metal element wire that has a first hardness at an outer periphery in a cross-section thereof that is higher than a second hardness at the center in the cross-section thereof.
  • the special metal element wire can impart improved durability to the wire rope without requiring the use of grease, enabling the wire rope to be used in a medical device.
  • a “special metal element wire” is a metal element wire in which the hardness at the outer periphery of the metal element wire is higher than at the center of the metal element wire.
  • the at least one special metal element wire may be arranged at the center of the wire rope. This can further improve the durability of the wire rope.
  • the wire rope may consist only of the at least one special metal element wire and multiple side metal element wires in contact with the at least one special metal element wire. This can further improve the durability of the wire rope.
  • the at least one special metal element wire may have a circular cross-section, and the multiple side metal element wires may each have an approximately trapezoidal cross-section.
  • the cross-section is “approximately trapezoidal” if it resembles a trapezoid having 4 defined sides, even if the sides and/or corners are partially or even completely curved. This can even further improve the durability of the wire rope.
  • a bundled wire rope may be formed by twisting together a plurality of any one of the wire ropes discussed above. This can further improve durability.
  • the wire rope may comprise, at its center, a twisted wire in which multiple special metal element wires are twisted together. This can improve the flexibility of the wire rope.
  • FIG. 1 shows a cross-sectional view of a wire rope according to the disclosed embodiments.
  • FIG. 2 shows a first hardness distribution in a cross-section of a special metal element wire.
  • FIG. 3 shows a second hardness distribution in a cross-section of a special metal element wire.
  • FIG. 4 shows a side view of a wire rope according to the disclosed embodiments.
  • FIG. 5 shows a cross-sectional view taken along line A-A in FIG. 4 .
  • FIG. 6 shows a side view of a wire rope according to the disclosed embodiments.
  • FIG. 7 shows a cross-sectional view taken along line B-B in FIG. 6 .
  • FIG. 8 shows a cross-sectional view of a wire rope according to the disclosed embodiments.
  • FIG. 9 shows a cross-sectional view of a wire rope according to the disclosed embodiments.
  • FIG. 1 shows a cross-sectional view of a wire rope according to the disclosed embodiments.
  • FIG. 2 shows a first hardness distribution of a cross-section of a special metal element wire used for the wire rope.
  • FIG. 3 shows a second hardness distribution of a cross-section of a special metal element wire used for the wire rope.
  • a wire rope 1 comprises a core wire 3 (which corresponds to the “special metal element wire”) located at the center, and 6 side wires 5 ( 5 a , 5 b , 5 c , 5 d , 5 e , and 5 f ) wound around the core wire 3 .
  • the core wire 3 is a metal element wire having a circular cross-section. There is no particular limitation for the material of the core wire 3 , but stainless steel is used for purposes of this discussion.
  • a peripheral part (outer periphery, or outer edge) of the core wire 3 in a cross-section has a higher hardness than a center of the core wire 3 in the cross-section. That is, the core wire 3 is configured to have a structure where only the surface region (surface) of the core wire 3 is hardened, but the inside of the core wire 3 is not hardened. This structure allows the core wire 3 to have both flexibility and improved resistance to abrasion due to contact between the core wire 3 and the side wires 5 .
  • a metal element wire e.g., the core wire 3
  • a hardness of the peripheral part in a cross-section of the metal element wire is higher than that of the center in the cross-section.
  • the hardness of the core wire 3 may increase in a second-order fashion toward the outer periphery from the center in a cross-section of the core wire 3 as shown in FIG. 2 , or may increase in a linear fashion.
  • the core wire 3 may include a constant-hardness region in the vicinity of the center of the core wire 3 that spans from the center to an intermediate position of the core wire 3 in a cross-section, and the hardness may increase from the intermediate position toward the outer periphery as shown in FIG. 3 .
  • the hardness described in FIGS. 2 and 3 is expressed in the Vickers hardness as measured with a Vickers hardness meter, and has a unit of “HV.”
  • the hardness of the center of the core wire 3 in FIG. 2 is about 650 HV, while the hardness at the outer periphery is about 700 HV, showing a difference of 50 HV.
  • the hardness of the core wire 3 in FIG. 3 is constant at about 650 HV in the vicinity of the center of the core wire 3 , while it is about 700 HV at the outer periphery, showing a difference of 50 HV.
  • the flexibility of the wire rope 1 was impaired and the durability decreased when the hardness of the entire region in a cross-section of the core wire 3 was, for example, 700 HV.
  • the side wires 5 ( 5 a , 5 b , 5 c , 5 d , 5 e , and 5 f ), which are metal element wires each having a circular cross-section, are spirally wound around the core wire 3 in the longitudinal direction.
  • the material of the side wires 5 ( 5 a , 5 b , 5 c , 5 d , 5 e , and 5 f ) as well, but stainless steel is used for purposes of this discussion. Tungsten may also be used.
  • the core wire 3 having a hardness of the peripheral part in a cross-section higher than that of the center is arranged at the center of the wire rope 1 such that the multiple side wires 5 ( 5 a , 5 b , 5 c , 5 d , 5 e , and 5 f ) all make contact with the core wire 3 .
  • This can improve the durability of the wire rope 1 .
  • FIG. 4 shows a side view of the wire rope
  • FIG. 5 shows a cross-sectional view taken along line A-A in FIG. 4 .
  • a wire rope 11 comprises a core wire 3 located at the center of the wire rope 11 , and 6 side wires 15 ( 15 a , 15 b , 15 c , 15 d , 15 e , and 15 f ) wound around the core wire 3 .
  • the side wires 15 ( 15 a , 15 b , 15 c , 15 d , 15 e , and 15 f ), which are metal element wires each deforestation-processed into an approximately trapezoidal shape, are spirally wound around the core wire 3 in the longitudinal direction.
  • the material of the side wires 15 15 a , 15 b , 15 c , 15 d , 15 e , and 15 f
  • stainless steel is used for purposes of this discussion. Tungsten may also be used.
  • the core wire 3 having a hardness of the peripheral part in a cross-section higher than that of the center is arranged at the center of the wire rope 11 such that the 6 side wires 15 ( 15 a , 15 b , 15 c , 15 d , 15 e , and 15 f ) each having an approximately trapezoidal cross-section all make surface contact with the core wire 3 .
  • the wire rope 11 has an approximately circular cross-sectional outer periphery. This can improve not only the torque transmissibility of the wire rope 11 (the torque transmissibility to one end of a wire rope when the other end of the wire rope is rotated), but also the durability of the wire rope.
  • FIG. 6 shows a side view of a wire rope according to the disclosed embodiments
  • FIG. 7 shows a cross-sectional view taken along line B-B in FIG. 6 .
  • a wire rope 101 comprises the core wire rope 11 shown in FIGS. 4 and 5 located at the center, and 6 side wire ropes 21 , 31 , 41 , 51 , 61 , and 71 wound around the core wire rope 11 . That is, the wire rope 101 is a bundled wire rope.
  • the side wire ropes 21 , 31 , 41 , 51 , 61 , and 71 each have a similar structure to that of the core wire rope 11 , and are spirally wound around the core wire rope 11 in the longitudinal direction.
  • the side wire rope 21 comprises a core wire 3 a located at the center (which corresponds to the “special metal element wire”) and 6 side wires 25 ( 25 a , 25 b , 25 c , 25 d , 25 e , and 25 f ) wound around the core wire 3 a ;
  • the side wire rope 31 comprises a core wire 3 b (which corresponds to the “special metal element wire”) located at the center and 6 side wires 35 ( 35 a , 35 b , 35 c , 35 d , 35 e , and 35 f ) wound around the core wire 3 b ;
  • the side wire rope 41 comprises a core wire 3 c (which corresponds to the “special metal element wire”) located at the center and 6 side wires 45 ( 45 a , 45 b , 45 c , 45 d , 45 e , and 45 f ) wound around the core wire 3 c ;
  • the side wire rope 51 comprises a core wire 3 d (which corresponds
  • the wire rope 101 is formed by twisting a plurality of wire ropes, each of which has arranged at its center a core wire having a hardness of the peripheral part in a cross-section higher than that of the center such that 6 side wires each having an approximately trapezoidal cross-section all make contact with the core wire, each wire rope being configured to have an approximately circular cross-sectional outer periphery. This can further improve not only the torque transmissibility of the wire rope 101 (the torque transmissibility to one end of a wire rope when the other end of the wire rope is rotated), but also the durability of the wire rope 101 .
  • FIG. 8 shows a cross-sectional view of a wire rope 81 according to the disclosed embodiments.
  • the wire rope 81 comprises a core twisted wire 13 located at the center, 4 inner side wires 82 arranged at the outside of the core twisted wire 13 , and 8 outer side wires 85 wound around the core twisted wire 13 and the inner side wires 82 .
  • the core twisted wire 13 comprises 4 metal element wires ( 13 a , 13 b , 13 c , and 13 d (each corresponds to the “special metal element wire”), and each metal element wire has a circular cross-section.
  • metal element wires 13 a , 13 b , 13 c , and 13 d
  • stainless steel is used for purposes of this discussion.
  • the metal element wires ( 13 a , 13 b , 13 c , and 13 d ), which constitute the core twisted wire 13 each have a hardness of the peripheral part in a cross-section higher than that of the center in the cross-section. That is, each metal element wire ( 13 a , 13 b , 13 c , and 13 d ) has a structure in which only the surface of the metal element wire is hardened, but the inside of the metal element wire is not hardened. Further, the core twisted wire 13 is formed by twisting four of these metal element wires. This can improve the flexibility and durability of the core twisted wire 13 .
  • inner side wires 82 ( 82 a , 82 b , 82 c , and 82 d ) are arranged at the outside of the core twisted wire 13 .
  • Each of the inner side wires 82 ( 82 a , 82 b , 82 c , and 82 d ) has a circular cross-section and a diameter smaller than that of each metal element wire ( 13 a , 13 b , 13 c , and 13 d ) of the core twisted wire 13 .
  • the material of the inner side wires 82 ( 82 a , 82 b , 82 c , and 82 d ), but stainless steel is used for purposes of this discussion.
  • outer side wires 85 ( 85 a , 85 b , 85 c , 85 d , 85 e , 85 f , 85 g , and 85 h ), which are metal element wires each having a circular cross-section, are arranged at the outside of the core twisted wire 13 and the inner side wires 82 ( 82 a , 82 b , 82 c , and 82 d ).
  • the material of the outer side wires 85 ( 85 a , 85 b , 85 c , 85 d , 85 e , 85 f , 85 g , and 85 h ), but stainless steel is used for purposes of this discussion.
  • the core twisted wire 13 (formed by twisting 4 metal element wires each having a hardness of the peripheral part in a cross-section higher than that of the central part) is arranged at the center. This can further improve the flexibility and durability of the wire rope 81 .
  • FIG. 9 shows a cross-sectional view of a wire rope 91 .
  • the wire rope 91 comprises a core twisted wire 23 located at the center, 4 inner side wires 92 arranged at the outside of the core twisted wire 23 , and 8 outer side wires 95 wound around the core twisted wire 23 and the inner side wires 92 .
  • the core twisted wire 23 comprises 4 metal element wires ( 23 a , 23 b , 23 c , and 23 d , and each of the metal element wire has a circular cross-section.
  • metal element wires 23 a , 23 b , 23 c , and 23 d
  • stainless steel is used for purposes of the discussion.
  • the metal element wire 23 d has a hardness of the peripheral part in a cross-section higher than that of the center in the cross-section. That is, the metal element wire 23 d is configured to have a structure in which only the surface of the metal element wire is hardened, but the inside of the metal element wire is not hardened (the metal element wire 23 d corresponds to the “special metal element wire”).
  • the metal element wires 23 a , 23 b , and 23 c each have an approximately constant hardness profile throughout a cross-section.
  • the core twisted wire 23 is formed by twisting the 4 metal element wires. This can further improve the flexibility of the core twisted wire 23 .
  • each of the inner side wires 92 ( 92 a , 92 b , 92 c , and 92 d ) has a circular cross-section and a diameter smaller than that of each metal element wire ( 23 a , 23 b , 23 c , and 23 d ) of the core twisted wire 23 .
  • the material of the inner side wires 92 ( 92 a , 92 b , 92 c , and 92 d ), but stainless steel is used for purposes of this discussion.
  • outer side wires 95 ( 95 a , 95 b , 95 c , 95 d , 95 e , 95 f , 95 g , and 95 h ), which are metal element wires each having a circular cross-section, are arranged at the outside of the core twisted wire 23 and the inner side wires 92 ( 92 a , 92 b , 92 c , and 92 d ).
  • the material of the outer side wires 95 ( 95 a , 95 b , 95 c , 95 d , 95 e , 95 f , 95 g , and 95 h ), but stainless steel is used for purposes of this discussion.
  • the core twisted wire 23 formed with the metal element wires each having a hardness of the peripheral part in a cross-section higher than that of the central part is arranged at the center of the wire rope 91 . This can improve the flexibility and durability of the wire rope 91 .
  • the side wires 5 , 15 , 25 , 35 , 45 , 55 , 65 , and 75 in the wire ropes 1 , 11 , and 101 are each formed with 6 metal element wires.
  • the number of metal element wires is, however, not limited to 6, and 3 or more may be sufficient.
  • the core twisted wires 13 and 23 are described as being formed by twisting 4 metal element wires.
  • the number of metal element wires is, however, not limited to 4, and two or more may be sufficient.
  • outer side wires 85 and 95 in the wire ropes 81 and 91 each comprise 8 metal element wires.
  • the number of metal element wires is, however, not limited to 8, and any number may be used as long as the core twisted wire 13 or 23 is covered.
  • the inner side wires 82 and 92 are provided in the wire ropes 81 and 91 , but the inner side wires 82 and 92 may not be present.

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  • Ropes Or Cables (AREA)
US15/450,446 2016-05-11 2017-03-06 Wire rope Abandoned US20170328000A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2016/063945 WO2017195284A1 (ja) 2016-05-11 2016-05-11 ワイヤーロープ

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2016/063945 Continuation WO2017195284A1 (ja) 2016-05-11 2016-05-11 ワイヤーロープ

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US20170328000A1 true US20170328000A1 (en) 2017-11-16

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US15/450,446 Abandoned US20170328000A1 (en) 2016-05-11 2017-03-06 Wire rope

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US (1) US20170328000A1 (de)
EP (1) EP3456876A4 (de)
JP (1) JP6344781B2 (de)
KR (1) KR102001319B1 (de)
CN (1) CN107923124A (de)
WO (1) WO2017195284A1 (de)

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JP7304160B2 (ja) * 2018-01-26 2023-07-06 東京製綱株式会社 フレキシブル・ウエイト・ワイヤロープ
US11993894B2 (en) * 2018-10-23 2024-05-28 Bekaert Advanced Cords Aalter Nv Steel wire rope, coated steel wire rope and belt comprising steel wire rope
CN110538945B (zh) * 2019-09-19 2021-04-13 中国人民解放军陆军装甲兵学院 一种难熔高熵合金绞股丝材、其应用及制备方法
JP2023064965A (ja) * 2021-10-27 2023-05-12 朝日インテック株式会社 ワイヤーロープ

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EP3456876A4 (de) 2019-11-20
EP3456876A1 (de) 2019-03-20
JPWO2017195284A1 (ja) 2018-06-07
KR102001319B1 (ko) 2019-07-17
KR20170141181A (ko) 2017-12-22
CN107923124A (zh) 2018-04-17
JP6344781B2 (ja) 2018-06-20

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