US20220170204A1 - Wire rope - Google Patents

Wire rope Download PDF

Info

Publication number
US20220170204A1
US20220170204A1 US17/672,030 US202217672030A US2022170204A1 US 20220170204 A1 US20220170204 A1 US 20220170204A1 US 202217672030 A US202217672030 A US 202217672030A US 2022170204 A1 US2022170204 A1 US 2022170204A1
Authority
US
United States
Prior art keywords
wire
wire rope
strands
single wire
section
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.)
Pending
Application number
US17/672,030
Other languages
English (en)
Inventor
Yu Shinohara
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
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: SHINOHARA, YU
Publication of US20220170204A1 publication Critical patent/US20220170204A1/en
Pending legal-status Critical Current

Links

Images

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
    • D07B1/0673—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core having a rope configuration
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/14—Ropes or cables with incorporated auxiliary elements, e.g. for marking, extending throughout the length of the rope or cable
    • 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
    • D07B2201/1012—Rope or cable structures characterised by their internal structure
    • D07B2201/1014—Rope or cable structures characterised by their internal structure characterised by being laid or braided from several sub-ropes or sub-cables, e.g. hawsers
    • 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
    • D07B2201/1048—Rope or cable structures twisted using regular lay, i.e. the wires or filaments being parallel to rope axis
    • 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
    • D07B2201/2001—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
    • D07B2201/2015—Strands
    • D07B2201/2024—Strands twisted
    • D07B2201/2027—Compact winding
    • 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
    • D07B2205/3021—Metals
    • D07B2205/3025—Steel
    • D07B2205/3028—Stainless steel
    • 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
    • D07B2401/2005—Elongation or elasticity
    • 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
    • D07B2401/2005—Elongation or elasticity
    • D07B2401/201—Elongation or elasticity regarding structural elongation
    • 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 technique disclosed in the present specification relates to a wire rope.
  • Wire ropes can take forms such as so-called single-twisted and multi-twisted forms.
  • a single-twisted form is a form in which a plurality of single wires are twisted with each other
  • a multi-twisted form is a form in which a plurality of strands are twisted with each other, where each strand is constituted by a plurality of element wires that are twisted with each other.
  • Single-twisted wire ropes have a higher rigidity than multi-twisted wire ropes, which provides advantages such as a high elongation resistance of the wire rope, an example of which is a low initial elongation.
  • the initial elongation of a wire rope is the elongation that occurs in the initial stages of using a new wire rope.
  • the operability of a wire rope can decrease if the initial elongation of the wire rope is large, it is preferable that the initial elongation of the wire rope is small.
  • multi-twisted wire ropes have a lower rigidity than single-twisted wire ropes, the flexibility of shape changes is correspondingly higher, which provides advantages when the wire rope is used by being inserted inside a bent tube, such as a lower frictional resistance and higher slidability of the wire rope inside the tube.
  • filling wires and the like are disposed between each of the plurality of strands in a multi-twisted wire rope.
  • filling wires and the like by interposing the filling wires and the like between two strands that are adjacent to each other, the elongation resistance of the wire rope can be improved due to a higher filling rate of the wire rope (fewer gaps in the transverse cross-section of the wire rope). That is to say, according to these conventional techniques, an improvement in the elongation resistance of the wire rope can be expected while ensuring the flexibility of shape changes.
  • Patent Literature 1 Japanese Unexamined Patent Application Publication No. 117-138923
  • Patent Literature 2 U.S. Pat. No. 6,049,042
  • a wire rope disclosed herein is provided with a plurality of strands that are twisted with each other, the plurality of strands each having a configuration in which a plurality of element wires are twisted with each other, the wire rope including: a single wire that is disposed in a recess section formed on an outer peripheral side of the wire rope by two strands that are adjacent to each other along a peripheral direction of the wire rope; wherein in a transverse cross-section of the wire rope, a portion of the single wire is positioned inside a virtual circumscribed circle of one of the two strands.
  • the single wire is disposed in a recess section formed on the outer peripheral side of the wire rope by two strands that are adjacent to each other.
  • the gap that exists between the two strands is filled such that a portion of the single wire is positioned inside the virtual circumscribed circle of one of the two strands that are adjacent to each other. Therefore, according to this wire rope, compared to a configuration in which the single wire is interposed between two strands that are adjacent to each other, or a configuration in which the single wire is positioned outside the virtual circumscribed circle of the two strands that are adjacent to each other, the filling rate of the wire rope can be increased, which enables the elongation resistance of the wire rope to be improved.
  • the wire rope described above may be configured such that, in the transverse cross-section, an element wire of one of the two strands and an element wire of the other of the two strands are adjacently disposed further inward of the single wire in a radial direction of the wire rope, and a portion of the single wire is positioned between the element wire of the one strand and the element wire of the other strand in the peripheral direction.
  • the gap that exists between the two strands is filled such that the single wire is positioned between element wires that constitute each of the two strands that are adjacent to each other, and which are disposed adjacent to each other.
  • the filling rate of the wire rope can be increased, which enables the elongation resistance of the wire rope to be more effectively improved.
  • the wire rope described above may be configured such that, in the transverse cross-section, the single wire makes contact with each of the element wire of the one of the two strands and the element wire of the other strand.
  • the gap that exists between the two strands is filled such that the single wire makes contact with the element wires constituting each of the two strands that are adjacent to each other. Therefore, according to this wire rope, compared to a configuration in which the single wire is separated from the element wires constituting the strands, the filling rate of the wire rope can be increased, which enables the elongation resistance of the wire rope to be more effectively improved.
  • the wire rope described above may be configured such that, in the transverse cross-section, a cross-sectional area of the single wire is larger than a cross-sectional area of each of the element wires constituting the strands.
  • this wire rope compared to a configuration in which the cross-sectional area of the single wire is smaller than the cross-sectional area of each of the element wires of the strands, the strength of the wire rope can be improved by the single wire.
  • the wire rope described above may be configured such that a tensile strength of the single wire is lower than a tensile strength of each of the element wires constituting the strands. According to this wire rope, compared to a configuration in which the tensile strength of the single wire is greater than or equal to the tensile strength of the element wires constituting the strands, the single wire enters between the element wires of the two strands more easily, which enables the elongation resistance of the wire rope to be more effectively improved.
  • the wire rope described above may be configured such that a tensile strength of the single wire is within a range of ⁇ 5% of a tensile strength of each of the element wires constituting the strands. According to this wire rope, the tensile strength of the wire rope as a whole can be made uniform.
  • the wire rope described above may be configured such that an area of the virtual circumscribed circle is smaller than an area of a virtual circumscribed circle of a virtual strand in a case where all of the element wires constituting the one strand are perfectly circular (are perfect circles circle having the same area as the area of the element wires). According to this wire rope, compared to a configuration in which the area of the virtual circumscribed circle of the strand is the same as that of the virtual circumscribed circle of the virtual strand, the elongation resistance of the wire rope can be more effectively improved by an amount corresponding to the extent that the gap between the element wires of the strand is reduced.
  • the wire rope described above may be configured such that, in the transverse cross-section, an area of a virtual circumscribed circle of the single wire is larger than an area of the single wire (area of a perfect circle) when being perfectly circular (a perfect circle having the same area as the area of the single wire).
  • this wire rope it is possible to effectively fill (block) the recess section (gap) formed on the outer peripheral side of the wire rope by the two strands that are adjacent to each other with the single wire.
  • the gaps between the plurality of element wires inside each of the side strands (each individual side strand) can be more effectively filled (blocked) by the plurality of element wires. Therefore, the elongation resistance of the wire rope can be more effectively improved.
  • the wire rope described above may be configured such that the single wire includes a first single wire that is disposed in a recess section formed on an outer peripheral side of the wire rope by a first group of strands that are adjacent to each other, and a second single wire that is disposed in a recess section formed on an outer peripheral side of the wire rope by a second group of strands that are adjacent to each other, and in the transverse cross-section, a distance between a pair of element wires positioned so as to sandwich the first single wire in the peripheral direction is larger than a distance between a pair of element wires positioned so as to sandwich the second single wire in the peripheral direction, and further, the number of element wires of the first group of strands making contact with the first single wire is larger than the number of element wires of the second group of strands making contact with the second single wire.
  • the larger the distance between the pair of element wires sandwiching the single wire the larger the number of element wires that make contact with the single wire.
  • the gap that exists between the two strands that are adjacent to each other becomes larger, the gap that exists between the two strands is filled such that the single wire makes contact with a larger number of element wires. Therefore, according to this wire rope, compared to a configuration in which the number of element wires making contact with the single wire is the same regardless of the size of the gap that exists between the two strands, the filling rate of the wire rope can be increased, which enables the elongation resistance of the wire rope to be improved.
  • the wire rope described above may be configured such that the single wire includes a first single wire that is disposed in a recess section formed on an outer peripheral side of the wire rope by a first group of strands that are adjacent to each other, and in the transverse cross-section, a distance between a pair of element wires positioned so as to sandwich the first single wire in the peripheral direction is larger than a distance between a pair of element wires positioned so as to sandwich the first single wire in another transverse cross-section different from the transverse cross-section, and further, the number of element wires of the first group of strands making contact with the first single wire in the transverse cross-section is larger than the number of element wires making contact with the first single wire in the another transverse cross-section.
  • the distance between the pair of element wires positioned so as to sandwich the first single wire in the peripheral direction differs between the transverse cross-section of the wire rope and the another transverse cross-section, and the number of element wires making contact with the first single wire becomes larger as the distance between the pair of element wires sandwiching the first single wire becomes larger.
  • the filling rate of the wire rope can be increased, which enables the elongation resistance of the wire rope to be improved.
  • the wire rope described above may be configured such that the single wire includes a first single wire that is disposed in a recess section formed on an outer peripheral side of the wire rope by a first group of strands that are adjacent to each other, and a second single wire that is disposed in a recess section formed on an outer peripheral side of the wire rope by a second group of strands that are adjacent to each other, in the transverse cross-section, a distance between a pair of element wires positioned so as to sandwich the first single wire in the peripheral direction is larger than a distance between a pair of element wires positioned so as to sandwich the second single wire in the peripheral direction, and further, the number of element wires of the first group of strands making contact with the first single wire is larger than the number of element wires of the second group of strands making contact with the second single wire, and in the transverse cross-section, a distance between a pair of element wires positioned so as to sandwich the first single wire in the peripheral direction is larger than a distance between a distance
  • the wire rope described above may be configured such that a shape of the element wires in a transverse cross-section is a shape which is different from a perfect circle, an ellipse, or an oval. According to this wire rope, the gap that exists between the two strands is filled by the shape of the element wires in the transverse cross-section being different from that of a perfect circle, an ellipse, or an oval, which enables the elongation resistance of the wire rope to be improved.
  • the wire rope described above may be configured such that a shape of the single wire in a transverse cross-section is a shape which is different from a perfect circle, an ellipse, or an oval. According to this wire rope, the gap that exists between the two strands is filled by the shape of the single wire in the transverse cross-section being different from that of a perfect circle, an ellipse, or an oval, which enables the elongation resistance of the wire rope to be improved.
  • the technique disclosed herein can be achieved in various aspects including, for example, a wire rope and a method of manufacturing a wire rope.
  • FIG. 1 is a cross-sectional perspective view schematically showing a configuration of a wire rope 10 of an embodiment.
  • FIG. 2 is an explanatory view showing a transverse cross-sectional configuration of the wire rope 10 of an embodiment.
  • FIGS. 3A and 3B are explanatory views partially showing different transverse cross-sectional configurations of the wire rope 10 .
  • FIGS. 4A and 4B are explanatory views showing transverse cross-sectional configurations of a side strand 30 and a virtual strand 30 P.
  • FIG. 1 is a cross-sectional perspective view schematically showing the configuration of a wire rope 10 according to an exemplary embodiment
  • FIG. 2 is an explanatory view showing a transverse cross-sectional configuration of the wire rope 10 according to the present embodiment.
  • the wire rope 10 of the present embodiment may be used in various applications (such as in bicycle brakes, and for operating an endoscope).
  • the wire rope 10 includes a core material 20 , a plurality (or more specifically, six) side strands 30 , and a plurality (or more specifically, six) single wires (individual wires) 40 ( 40 A to 40 F).
  • the core material 20 has a plurality of metallic element wires 22 that are twisted with each other. More specifically, the core material 20 has a configuration in which six metallic element wires 22 are twisted around one metallic element wire 22 .
  • each of the metallic element wires 22 constituting the core material 20 is formed of stainless steel (such as SUS 304 ).
  • the plurality of side strands 30 are twisted with each other around the core material 20 . That is to say, the plurality of side strands 30 are disposed side-by-side along the peripheral direction of the wire rope 10 (peripheral direction of a virtual circle centered on a central axis Q 1 of the wire rope 10 (core material 20 )).
  • the central axis Q 1 is the center of a virtual circumscribed circle of the metallic element wire 22 positioned at the center of the core material 20 .
  • the central axis Q 1 is the center of a virtual circumscribed circle of the transverse cross-section of the element wire.
  • Each of the side strands 30 has a plurality of metallic element wires 32 that are twisted with each other. More specifically, each of the side strands 30 has a configuration in which six metallic element wires 32 are twisted around one metallic element wire 32 .
  • each of the metallic element wires 32 constituting the side strands 30 is formed of stainless steel (such as SUS 304 ).
  • the side strands 30 are an example of a strand in the scope of the claims, and each of the metallic element wires 32 constituting the side strands 30 is an example of an element wire in the scope of the claims.
  • the plurality of single wires 40 are twisted around the core material 20 together with the side strands 30 , and in the same direction as the side strands 30 .
  • the single wire 40 is disposed in a recess section formed on the outer peripheral side of the wire rope 10 by two side strands 30 that are adjacent to each other along the peripheral direction of the wire rope 10 . That is to say, the wire rope 10 is provided with the same number of single wires 40 as side strands 30 .
  • each of the single wires 40 is constituted by one metallic element wire.
  • each of the single wires 40 is formed of stainless steel (such as SUS 304 ).
  • the wire rope 10 includes six side strands 30 , there are six combinations of two side strands 30 that are adjacent to each other along the peripheral direction of the wire rope 10 .
  • one single wire 40 is disposed with respect to each of the six combinations.
  • the core material 20 is Z-twisted
  • each of the side strands 30 is S-twisted
  • the plurality of side strands 30 and single wires 40 around the core material 20 are Z-twisted, but the twisting method and twisting direction of each wire is not limited to this. The details of the cross-sectional configuration of the wire rope 10 will be described below.
  • Condition 1 is satisfied with respect to one single wire 40 and one side strand 30 .
  • a portion of at least one single wire 40 is positioned inside a first virtual circumscribed circle M 1 of at least one of the side strands 30 among the two side strands 30 that are adjacent to each other along the peripheral direction of the wire rope 10 .
  • the first virtual circumscribed circles M 1 are perfect circles circumscribed on the side strands 30 (group of metallic element wires 32 constituting the side strands 30 ), and have the smallest radius of the perfect circles that enclose all of the metallic element wires 32 constituting one side strand 30 .
  • Condition 1 indicates that one single wire 40 enters so as to be positioned between the metallic element wires 32 constituting one side strand 30 .
  • the gap that exists between two side strands 30 is filled by a portion of the single wire 40 being positioned inside the first virtual circumscribed circles M 1 of the side strands 30 .
  • the filling rate of the wire rope 10 can be increased, which enables the elongation resistance of the wire rope 10 to be improved (for example, the initial elongation is reduced).
  • a portion of one single wire 40 is positioned inside the first virtual circumscribed circles M 1 of each of the two side strands 30 that are adjacent to each other in the peripheral direction of the wire rope 10 .
  • the filling rate of the wire rope 10 can be further increased, which enables the elongation resistance of the wire rope 10 to be more effectively improved.
  • Condition 1A is further satisfied with respect to one single wire 40 and one side strand 30 .
  • At least a portion of one single wire 40 is positioned further on the central axis Q 2 side of the side strand 30 than a first virtual circumscribed line B 1 that is circumscribed on both of the two metallic element wires 32 that, of the plurality of metallic element wires 32 that configure the one side strand 30 , are positioned closest to the single wire 40 .
  • the first virtual circumscribed line B 1 is a virtual line that, of the two virtual straight lines that make contact so as to straddle both of the two metallic element wires 32 that are positioned closest to the single wire 40 , is positioned on the single wire 40 side.
  • Condition 1A indicates that, compared to Condition 1 described above, one single wire 40 enters to greater extent with respect to one side strand 30 .
  • the filling rate of the wire rope 10 can be further increased, which enables the elongation resistance of the wire rope 10 to be more effectively improved.
  • Condition 1B below is further satisfied with respect to one single wire 40 and one side strand 30 .
  • At least one single wire 40 makes contact with at least one of two metallic element wires 32 that, of the plurality of metallic element wires 32 that configure one side strand 30 , are positioned closest to the single wire 40 .
  • the filling rate of the wire rope 10 can be further increased, which enables the elongation resistance of the wire rope 10 to be more effectively improved. Furthermore, as a result of the contact between the single wire 40 and the side strand 30 , the entry of liquid into the wire rope 10 from the gap between the single wire 40 and the side strand 30 is suppressed, which enables the water immersion resistance of the wire rope 10 to be improved.
  • one single wire 40 makes contact with both of the two metallic element wires 32 that are positioned closest to the single wire 40 .
  • the single wire 40 may be in a point contact with the metallic element wires 32 , but preferably makes surface contact with each of the metallic element wires 32 .
  • surface contact refers to a case where, in the transverse cross-section of the wire rope 10 , a substantially straight section of the single wire 40 and a substantially straight section of the element wires (such as the metallic element wires 32 ) are in a partial or total line contact.
  • the gap that exists between two side strands 30 that are adjacent to each other is filled even further, which enables the improvement in the elongation resistance of the wire rope 10 described above to be more effectively obtained, and further, because the surface contact between the single wire 40 and the side strand 30 (metallic element wires 32 ) is large, it is possible improve the water immersion resistance of the wire rope 10 , and suppress the displacement between the single wire 40 and the side strands 30 more effectively.
  • a portion of each of the six single wires 40 ( 40 A to 40 F) is positioned inside the first virtual circumscribed circles M 1 of each of the two side strands 30 that are adjacent to each other, which satisfies Condition 1.
  • a portion of each of the six single wires 40 ( 40 A to 40 F) is positioned inside the first virtual circumscribed circle M 1 of one of the two side strands 30 that are adjacent to each other, and another portion of the single wires 40 is positioned inside the first virtual circumscribed circle M 1 of the other of the two side strands 30 that are adjacent to each other, which satisfies Condition 1.
  • at least the single wires 40 B to 40 F satisfy Condition 1A and Condition 1B described above.
  • the single wire 40 F is positioned further on the central axis Q 2 side of the side strand 30 than the first virtual circumscribed line B 1 that is circumscribed on both of the two metallic element wires 32 (metallic element wires 32 E and 32 F in FIG. 2 ) of one side strand 30 that are positioned closest to the single wire 40 F (see also FIG. 3 described below).
  • the two metallic element wires 32 positioned closest to the single wire 40 F are the two metallic element wires 32 (metallic element wires 32 E and 32 F in FIG. 2 ) disposed next to the single wire 40 F without interposing other element wires.
  • the wire rope 10 it is preferable that 50% or more of the total number of single wires 40 satisfy Condition 1 (and also Condition 1A and Condition 1B), and it is preferable that 80% or more of the total number of single wires 40 satisfy Condition 1 (and also Condition 1A and Condition 1B).
  • Condition 2 is satisfied with respect to one single wire 40 and two side strands 30 .
  • first metallic element wire 32 X a metallic element wire 32 constituting one side strand 30
  • second metallic element wire 32 Y a metallic element wire 32 constituting another side strand 30
  • first metallic element wire 32 X a metallic element wire 32 constituting one side strand 30
  • second metallic element wire 32 Y a metallic element wire 32 constituting another side strand 30
  • a portion of the single wire 40 being positioned between the first metallic element wire 32 X and the second metallic element wire 32 Y means that a portion of the single wire 40 is positioned inside a second virtual circumscribed circle M 2 , which is centered on the central axis Q 1 of the wire rope 10 , encloses both the first metallic element wire 32 X and the second metallic element wire 32 Y, and is circumscribed on at least one of the first metallic element wire 32 X and the second metallic element wire 32 Y (see also FIG. 3 below).
  • the gap that exists between two side strands 30 is filled as a result of the single wire 40 entering so as to be positioned between the first metallic element wire 32 X and the second metallic element wire 32 Y.
  • the filling rate of the wire rope 10 can be increased, which enables the elongation resistance of the wire rope 10 to be more effectively improved.
  • Condition 2A is further satisfied with respect to one single wire 40 and two side strands 30 .
  • At least a portion of one single wire 40 is positioned further on the central axis Q 1 side of the wire rope 10 than a second virtual circumscribed line B 2 that is circumscribed on both the first metallic element wire 32 X and the second metallic element wire 32 Y.
  • the second virtual circumscribed line B 2 is a virtual straight line that, of the two virtual straight lines that make contact so as to straddle both the first metallic element wire 32 X and the second metallic element wire 32 , are positioned on the single wire 40 side.
  • Condition 2A indicates that, compared to Condition 2 described above, one single wire 40 enters to a greater extent between the first metallic element wire 32 X and the second metallic element wire 32 Y.
  • the filling rate of the wire rope 10 can be further increased, which enables the elongation resistance of the wire rope 10 to be more effectively improved.
  • Condition 2B below is further satisfied with respect to one single wire 40 and two side strands 30 .
  • At least one single wire 40 makes contact with at least one of the first metallic element wire 32 X and the second metallic element wire 32 Y.
  • the filling rate of the wire rope 10 can be further increased, which enables the elongation resistance of the wire rope 10 to be more effectively improved. Furthermore, as a result of the contact between the single wire 40 and the side strands 30 (metallic element wires 32 X and 32 Y), the entry of liquid into the wire rope 10 from the gap between the single wire 40 and the side strand 30 is suppressed, which enables the water immersion resistance of the wire rope 10 to be improved.
  • one single wire 40 makes contact with both the first metallic element wire 32 X and the second metallic element wire 32 Y.
  • the single wire 40 may be in a point contact with the first metallic element wire 32 X and the second metallic element wire 32 Y, but preferably makes surface contact with the first metallic element wire 32 X and the second metallic element wire 32 Y.
  • the gap that exists between the two side strands 30 that are adjacent to each other is filled even further, which enables the elongation resistance of the wire rope 10 described above to be more effectively improved, and further, because the surface contact between the single wire 40 and the side strands 30 (metallic element wires 32 X and 32 Y) is large, it is possible to improve the water immersion resistance of the wire rope 10 , and suppress the displacement between the single wire 40 and the side strands 30 more effectively.
  • Condition 2C is further satisfied with respect to one single wire 40 and two side strands 30 .
  • a distance L 1 between a pair of metallic element wires 32 positioned so as to sandwich a first single wire 40 in the peripheral direction with a first group of side strands 30 is larger than a distance L 2 between a pair of metallic element wires 32 positioned so as to sandwich the second single wire 40 in the peripheral direction with a second group of side strands 30 .
  • the number of metallic element wires 32 of the first group of side strands 30 making contact with the first single wire 40 is larger than the number of metallic element wires 32 of the second group of side strands 30 making contact with the second single wire 40 .
  • the filling rate of the wire rope 10 can be increased, which enables the elongation resistance of the wire rope 10 to be improved.
  • Condition 2D is further satisfied with respect to one single wire 40 and two side strands 30 .
  • the distance in a first transverse cross-section of the wire rope between a pair of metallic element wires 32 , which are in one group of side strands 30 that are adjacent to each other, that are positioned so as to sandwich the single wire 40 in the peripheral direction is larger than the distance in a second transverse cross-section of the wire rope 10 (a transverse cross-section taken in a different position to the first cross-section in the axial direction of the wire rope 10 ) between a pair of metallic element wires 32 , which are in the one group of side strands 30 , that are positioned so as to sandwich the single wire 40 in the peripheral direction.
  • the number of metallic element wires 32 in one group of side strands 30 making contact with the single wire 40 in the first transverse cross-section is larger than the number of metallic element wires 32 in the one group of side strands 30 making contact with the single wire 40 in the second transverse cross-section.
  • the gap that exists between the two side strands 30 becomes larger in the transverse cross-section, the gap that exists between the two side strands 30 is filled such that the single wire 40 makes contact with a larger number of metallic element wires 32 . Therefore, according to the present embodiment, compared to a configuration in which the number of metallic element wires 32 making contact with the single wire 40 is the same despite the gap that exists between the two side strands 30 being different depending on the axial direction position of the wire rope 10 , the filling rate of the wire rope 10 can be increased, which enables the elongation resistance of the wire rope 10 to be improved.
  • each of at least the single wires 40 B, 40 D, and 40 F is positioned between the first metallic element wire 32 X and the second metallic element wire 32 Y in the peripheral direction of the wire rope 10 , which satisfies Condition 2. Furthermore, at least the single wires 40 B, 40 D, and 40 F satisfy Condition 2A and Condition 2B described above. For example, a portion of the single wire 40 B is positioned further on the central axis Q 1 side of the wire rope 10 than the second virtual circumscribed line B 2 that is circumscribed on both the first metallic element wire 32 X and the second metallic element wire 32 Y (see also FIG. 3 described below).
  • the single wires 40 ( 40 B, 40 D, and 40 F) that satisfy Condition 2 (Condition 2A), and the single wires 40 ( 40 A, 40 C, and 40 E that do not satisfy Condition 2 (Condition 2A) are alternately arranged along the peripheral direction of the wire rope 10 .
  • the wire rope 10 it is preferable that 30% or more of the total number of single wires 40 satisfy Condition 2 (and also Condition 2A and Condition 2B), and it is preferable that 50% or more of the total number of single wires 40 satisfy Condition 2 (and also Condition 2A and Condition 2B).
  • the distance L 1 between a pair of metallic element wires 32 positioned so as to sandwich the first single wire 40 B is larger than the distance L 2 between a pair of metallic element wires 32 positioned so as to sandwich the second single wire 40 C.
  • the number of metallic element wires 32 making contact with the first single wire 40 B is larger than the number of metallic element wires 32 making contact with the second single wire 40 C. Note that, for example, the same relationship is established between the single wire 40 F and the single wire 40 A, and the single wire 40 D and the single wire 40 E.
  • the plurality of side strands 30 are unevenly arranged in the peripheral direction, and even though the size of the gaps in each group of side strands 30 is also uneven, single wires 40 having a shape corresponding to the gaps of each group of side strands 30 are positioned so as enter and fill the uneven gaps.
  • the filling rate of the wire rope 10 can be increased, which enables the elongation resistance of the wire rope 10 to be improved.
  • FIGS. 3A and 3B are explanatory views partially showing different transverse cross-sectional configurations of the wire rope 10 .
  • a transverse cross-sectional configuration near the single wire 40 B in a first transverse cross-section (the same transverse cross-section as FIG. 2 ) is shown
  • a transverse cross-sectional configuration near the single wire 40 B in a second transverse cross-section (a transverse cross-section taken in a different position than the first cross-section in the axial direction of the wire rope 10 ) is shown.
  • FIGS. 3A a transverse cross-sectional configuration near the single wire 40 B in a first transverse cross-section (the same transverse cross-section as FIG. 2 ) is shown
  • a transverse cross-sectional configuration near the single wire 40 B in a second transverse cross-section (a transverse cross-section taken in a different position than the first cross-section in the axial direction of the wire rope 10 ) is shown.
  • the distance L 1 in the first transverse cross-section between a pair of metallic element wires 32 positioned so as to sandwich the single wire 40 B in the peripheral direction is larger than a distance L 3 in the second transverse cross-section between a pair of metallic element wires 32 positioned so as to sandwich the single wire 40 B in the peripheral direction.
  • the number of metallic element wires 32 making contact with the single wire 40 B in the first transverse cross-section is larger than the number of metallic element wires 32 making contact with the single wire 40 B in the second transverse cross-section.
  • the filling rate of the wire rope 10 can be increased, which enables the elongation resistance of the wire rope 10 to be improved.
  • Condition 3 is satisfied with respect to the structure of the single wire 40 and the metallic element wires 32 constituting the side strands 30 .
  • the cross-sectional area of one single wire 40 is larger than the cross-sectional area of each of the metallic element wires 32 constituting one side strand 30 .
  • the strength of the wire rope 10 can be improved by the single wire 40 .
  • the single wire 40 can more easily enter between the metallic element wires 32 when the wire rope 10 is formed and when the wire rope 10 is bent, and therefore, the filling rate of the wire rope 10 can be increased, which enables the elongation resistance of the wire rope 10 to be more effectively improved.
  • the cross-sectional area of one single wire 40 is preferably less than or equal to the sum of the cross-sectional areas of two metallic element wires 32 .
  • the diameter of the virtual circumscribed circle of one single wire 40 is preferably larger than the diameter of the virtual circumscribed circle of one metallic element wire 32 .
  • the diameter of the circumscribed circle of one single wire 40 is preferably smaller than the diameter of the first virtual circumscribed circle M 1 of one side strand 30 .
  • the diameter is preferably two times or less than the diameter of the virtual circumscribed circle of one metallic element wire 32 , and more preferably 1 . 5 times or less than the diameter of the virtual circumscribed circle of one metallic element wire 32 .
  • Condition 3A is satisfied with respect to the structure of the single wire 40 and the metallic element wires 32 constituting the side strands 30 .
  • the tensile strength (N/mm 2 ) of at least one single wire 40 is substantially equal to the tensile strength of each of the metallic element wires 32 constituting the side strands 30 .
  • the hardness of the single wire 40 is substantially equal to the hardness of each of the metallic element wires 32 constituting the side strands 30 .
  • the tensile strength of each of the single wire 40 and the metallic element wires 32 is, for example, 1,500 N/mm 2 or more and 2,500 N/mm 2 or less.
  • the tensile strength of the single wire 40 and the metallic element wires 32 being substantially equal means that the difference in the tensile strength between them is less than ⁇ 5%.
  • the tensile strength of each of the single wire 40 and the metallic element wires 32 may be, for example, 1,500 N/mm 2 or more and 2,000 N/mm 2 or less.
  • the cross-sectional area of each of the six single wires 40 ( 40 A to 40 F) is larger than the cross-sectional area of each of the metallic element wires 32 constituting one side strand 30 , which satisfies Condition 3. Furthermore, the tensile strength of each of the six single wires 40 ( 40 A to 40 F) is substantially equal to the tensile strength of the side strands 30 (metallic element wires 32 ). As a result, it can be seen that the single wire 40 changes shape with the metallic element wires 32 , and enter the gap that exists between the two side strands 30 that are adjacent to each other.
  • the plurality of side strands 30 each have an irregular shape (a shape different from a perfect circle, an ellipse, or an oval), and the shapes are different from each other. Therefore, the shapes of the gaps (recess sections) between two side strands 30 that are adjacent to each other are all different from each other, and each of the gaps has a single wire 40 that has changed shape into a shape that corresponds to the gap (a shape different from a perfect circle, an ellipse, or an oval), and which is disposed so as to enter between the two side strands 30 .
  • the plurality of side strands 30 are unevenly disposed, and the shapes of the plurality of side strands 30 are different from each other, the plurality of single wires 40 are also unevenly disposed, and the shapes are different from each other. This is described in detail below.
  • At least two single wires 40 have a third virtual circumscribed circle M 3 of the single wire 40 having different diameters from each other.
  • the distance in the peripheral direction of a pair of single wires 40 positioned so as to sandwich one side strand 30 (the shortest distance between the pair of single wires 40 in the peripheral direction of the wire rope 10 ) and the distance in the peripheral direction of a pair of single wires 40 positioned so as to sandwich another side strand 30 are different.
  • the cross-sectional shapes of the six single wires 40 are different from each other.
  • the third virtual circumscribed circles M 3 of at least the single wire 40 A and the 40 C have different diameters.
  • the area of the first virtual circumscribed circle M 1 of at least one of the two side strands 30 between which the single wire 40 is disposed is smaller than a fourth virtual circumscribed circle M 4 of a virtual strand 30 P in a case where all of the metallic element wires 32 constituting the side strand 30 are perfectly circular (but otherwise have the same area in cross-section).
  • the elongation resistance of the wire rope 10 can be more effectively improved by an amount corresponding to the extent in which the gap between the metallic element wires 32 of the side strand 30 is narrowed.
  • the plurality of side strands 30 are disposed along the peripheral direction of the wire rope 10 such that they make contact with each other, and are disposed over the entire periphery. Furthermore, all of the side strands 30 make contact with the core material 20 .
  • the contact between the side strands 30 may be a point contact, but is preferably a surface contact.
  • the contact between the side strands 30 and the core material 20 may be a point contact, but is preferably a surface contact.
  • FIGS. 4A and 4B are explanatory views showing transverse cross-sectional configurations of the side strand 30 and the virtual strand 30 P.
  • FIG. 4A shows the transverse cross-sectional configuration of the virtual strand 30 P
  • FIG. 4B shows the transverse cross-sectional configuration of the side strand 30 .
  • the side strands 30 have the metallic element wires 32 P in the virtual strand 30 P deformed such that they are flattened. As shown in FIG.
  • the area (radius r 1 ) of the first virtual circumscribed circle M 1 of the side strand 30 is smaller than the area (radius r 4 ) of the fourth virtual circumscribed circle M 4 of the virtual strand 30 P, which satisfies Condition 5.
  • the area of a third virtual circumscribed circles M 3 of the single wires 40 shown in FIG. 2 may be configured to be larger than the area of the single wires (area of the perfect circles) when the single wires 40 are perfectly circular (perfect circles circle having the same area as the area of the single wires 40 ).
  • the elongation resistance of the wire rope 10 can be more effectively improved. Furthermore, the entry of liquid into the core material 20 of the wire rope 10 from the gaps between the single wires 40 and the side strands 30 or the gaps between adjacent metallic element wires 32 in the side strands 30 is suppressed, which enables the durability of the wire rope 10 to be improved.
  • each of the single wires 40 is separated from the core material 20 .
  • each of the single wires 40 is positioned outside a fifth virtual circumscribed circle M 5 of the core material 20 .
  • each of the single wires 40 is positioned further outward in the radial direction of the wire rope 10 than the contact position of the two side strands 30 that are adjacent to each other.
  • one metallic element wire 22 constituting the core material 20 is disposed so as to face the one single wire 40 via the contact position of the two side strands 30 that are adjacent to each other.
  • the wire rope 10 that satisfies each of the conditions described above can be produced as follows.
  • a plurality of single wires 40 are twisted together with a plurality of side strands 30 around a core material 20 .
  • the plurality of side strands 30 are disposed side by side around the wire rope 10 , and a twisted wire is produced in which the single wires 40 are disposed in recess sections formed on the outer peripheral side of the wire rope 10 by two side strands 30 that are adjacent to each other.
  • the twisted wire is subjected to secondary processing such as swaging processing for deforming the side strands 30 and the single wires 40 , or wire drawing processing using a deforming die.
  • the core material 20 , the side strands 30 , and the single wires 40 are inwardly flattened in the radial direction of the wire rope 10 , producing the wire rope 10 described above.
  • single wires 40 are disposed between each of the plurality of side strands 30 in the multi-twisted wire. Further, in at least one transverse cross-section of the wire rope 10 , at least a portion of one single wire 40 is positioned inside the first virtual circumscribed circle M 1 of at least one of the two side strands 30 that are adjacent to each other in the peripheral direction of the wire rope 10 (Condition 1 described above). This makes it possible to improve the elongation resistance of the wire rope 10 while ensuring the flexibility of shape changes in the wire rope 10 .
  • the configuration of the wire rope 10 in the embodiment described above is only one example, and it can be modified in various ways.
  • the number of side strands 30 in the wire rope 10 of the above embodiment, and the number of element wires and number of layers constituting the side strands 30 and the core material 20 can be changed in various ways.
  • the number of side strands 30 may be three or more.
  • the wire rope 10 of the above embodiment includes the core material 20 , it is also possible to use a configuration in which a plurality of side strands 30 and a plurality of single wires 40 are twisted with each other without providing the core material 20 .
  • the core material 20 is a twisted wire in which a plurality of element wires are twisted together, it may also be a single wire constituted by a single element wire.
  • the wire rope 10 does not have to satisfy at least one of Conditions 1A and 1B, Condition 2, Conditions 2A to 2D, Condition 3, Condition 3A, Condition 4, Condition 4A, and Condition 5.
  • the tensile strength of the single wires 40 may be higher or lower than the tensile strength of each of the metallic element wires 32 constituting the side strands 30 .
  • the single wires 40 can enter between the metallic element wires 32 of the two side strands 30 even more easily, which enables the elongation resistance of the wire rope 10 to be more effectively improved.
  • each member of the wire rope 10 of the embodiment described above is provided only as an example, and can be modified in various ways.
  • the metallic element wires 22 and 32 constituting the core material 20 and the side strands 30 , and the single wire 40 may be formed of a metal other than stainless steel, and may be formed of a material other than a metal (such as a resin).

Landscapes

  • Ropes Or Cables (AREA)
US17/672,030 2019-08-22 2022-02-15 Wire rope Pending US20220170204A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2019152317 2019-08-22
JP2019-152317 2019-08-22
PCT/JP2020/028833 WO2021033497A1 (fr) 2019-08-22 2020-07-28 Câble métallique

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2020/028833 Continuation WO2021033497A1 (fr) 2019-08-22 2020-07-28 Câble métallique

Publications (1)

Publication Number Publication Date
US20220170204A1 true US20220170204A1 (en) 2022-06-02

Family

ID=74660815

Family Applications (1)

Application Number Title Priority Date Filing Date
US17/672,030 Pending US20220170204A1 (en) 2019-08-22 2022-02-15 Wire rope

Country Status (4)

Country Link
US (1) US20220170204A1 (fr)
EP (1) EP4019695A4 (fr)
JP (1) JP7138251B2 (fr)
WO (1) WO2021033497A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3111001A (en) * 1958-08-14 1963-11-19 Bayer Ag Stranded rope of endless fully synthetic plastic filaments
US3154910A (en) * 1961-05-05 1964-11-03 Dictz Alfred Stranded spiral rope
US4311001A (en) * 1978-12-08 1982-01-19 Glushko Mikhail F Method for manufacturing twisted wire products and product made by this method
US5048280A (en) * 1988-12-27 1991-09-17 Sumimoto Electric Industries, Ltd. Steel composite cord
US20080296546A1 (en) * 2007-06-01 2008-12-04 Peter Bergendahl Cable for use in safety barrier
US20130318937A1 (en) * 2012-05-31 2013-12-05 Tokyo Rope Manufactuting Co., Ltd. Hybrid core rope

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2241955A (en) * 1940-07-16 1941-05-13 Wickwire Spencer Steel Company Metallic rope and cable
JPS5218829B2 (fr) * 1972-01-14 1977-05-24
JPS60177995U (ja) * 1984-09-26 1985-11-26 神鋼鋼線工業株式会社 ワイヤロ−プ
JP2761794B2 (ja) * 1990-06-08 1998-06-04 東京製綱株式会社 ケーブルレイドロープ
JPH07138923A (ja) 1993-11-15 1995-05-30 Igeta Seiko Kk ガードロープ
GB2324542A (en) * 1997-04-25 1998-10-28 Bridon Plc Rope with additional reinforcing members
US6049042A (en) 1997-05-02 2000-04-11 Avellanet; Francisco J. Electrical cables and methods of making same
JP4064668B2 (ja) * 2001-12-26 2008-03-19 東京製綱株式会社 複合型ワイヤロープ
JP6077941B2 (ja) * 2013-06-07 2017-02-08 株式会社日立製作所 エレベータ用ワイヤロープ
KR101752686B1 (ko) * 2014-11-11 2017-07-11 주식회사 디에스글로벌이씨엠 내부식성이 향상된 구조 보강용 강연선 및 그 제조 방법
JP7286410B2 (ja) * 2019-05-21 2023-06-05 東京製綱株式会社 ワイヤロープ、ワイヤロープの端部処理方法、及び、螺旋部材

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3111001A (en) * 1958-08-14 1963-11-19 Bayer Ag Stranded rope of endless fully synthetic plastic filaments
US3154910A (en) * 1961-05-05 1964-11-03 Dictz Alfred Stranded spiral rope
US4311001A (en) * 1978-12-08 1982-01-19 Glushko Mikhail F Method for manufacturing twisted wire products and product made by this method
US5048280A (en) * 1988-12-27 1991-09-17 Sumimoto Electric Industries, Ltd. Steel composite cord
US20080296546A1 (en) * 2007-06-01 2008-12-04 Peter Bergendahl Cable for use in safety barrier
US20130318937A1 (en) * 2012-05-31 2013-12-05 Tokyo Rope Manufactuting Co., Ltd. Hybrid core rope

Also Published As

Publication number Publication date
EP4019695A1 (fr) 2022-06-29
WO2021033497A1 (fr) 2021-02-25
JPWO2021033497A1 (fr) 2021-02-25
EP4019695A4 (fr) 2023-09-13
JP7138251B2 (ja) 2022-09-15

Similar Documents

Publication Publication Date Title
US10443191B2 (en) Rope for elevator and manufacturing method therefor
KR101437321B1 (ko) 하이브리드 로프 및 그 제조 방법
EP3009560B1 (fr) Procédé de fabrication d'un câble d'acier de renforcement de pneu
JPH0742665B2 (ja) ゴム付着性スチ−ルコ−ド
US20170328000A1 (en) Wire rope
JP2018076625A (ja) 高強度ワイヤロープ
JP6329695B1 (ja) 多層体、多層中空体及び多層中空体を備えたカテーテル
JP2012036927A (ja) ゴムホース
JP4925986B2 (ja) 金属素線のゴム被覆方法、コードの製造方法、コード、ゴム被覆装置およびコードの製造装置
JP5091438B2 (ja) インナーケーブルおよびそれを用いたプッシュプルコントロールケーブル
US20220170204A1 (en) Wire rope
JP2010508450A (ja) マルチストランド鋼製ワイヤロープ
JP2009084711A (ja) ゴム−スチール複合体コードの製造方法およびそれにより得られるゴム−スチール複合体コード
US9887022B2 (en) Stranded conductors and method for producing stranded conductors
JP5179810B2 (ja) ゴム物品補強用スチールコードの製造方法
EP2628850B1 (fr) Toron ou câble torsadé avec une surface extérieure lisse
JP4810388B2 (ja) 撚線導体及びその製造方法
CN210797070U (zh) 一种改进型钢丝绳
JP3895135B2 (ja) タイヤ補強用スチールコード
JPH0673673A (ja) ゴム補強用スチールコード
SU960338A1 (ru) Проволочный канат
JPH05186975A (ja) タイヤ用スチールコード
JP2021188211A (ja) ワイヤロープ
KR100279563B1 (ko) 내마모성 와이어 로프
JP2002235289A (ja) タイヤ補強用スチールコードの製造方法

Legal Events

Date Code Title Description
AS Assignment

Owner name: ASAHI INTECC CO., LTD., JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SHINOHARA, YU;REEL/FRAME:059016/0058

Effective date: 20220131

STPP Information on status: patent application and granting procedure in general

Free format text: DOCKETED NEW CASE - READY FOR EXAMINATION

STPP Information on status: patent application and granting procedure in general

Free format text: NON FINAL ACTION MAILED