WO2017208469A1 - Running wire rope - Google Patents

Running wire rope Download PDF

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Publication number
WO2017208469A1
WO2017208469A1 PCT/JP2016/068966 JP2016068966W WO2017208469A1 WO 2017208469 A1 WO2017208469 A1 WO 2017208469A1 JP 2016068966 W JP2016068966 W JP 2016068966W WO 2017208469 A1 WO2017208469 A1 WO 2017208469A1
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WO
WIPO (PCT)
Prior art keywords
resin
rope
wire rope
core
moving
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Application number
PCT/JP2016/068966
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French (fr)
Japanese (ja)
Inventor
新也 井上
祐樹 西井
Original Assignee
株式会社テザックワイヤロープ
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Application filed by 株式会社テザックワイヤロープ filed Critical 株式会社テザックワイヤロープ
Priority to KR1020187029068A priority Critical patent/KR102087335B1/en
Priority to EP16904093.8A priority patent/EP3467197B1/en
Priority to CN201680083090.2A priority patent/CN108713079B/en
Publication of WO2017208469A1 publication Critical patent/WO2017208469A1/en

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    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/16—Ropes or cables with an enveloping sheathing or inlays of rubber or plastics
    • D07B1/162—Ropes or cables with an enveloping sheathing or inlays of rubber or plastics characterised by a plastic or rubber enveloping sheathing
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/16—Ropes or cables with an enveloping sheathing or inlays of rubber or plastics
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/06—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
    • D07B1/0673—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core having a rope configuration
    • D07B1/0686—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core having a rope configuration characterised by the core design
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • 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
    • D07B1/145—Ropes or cables with incorporated auxiliary elements, e.g. for marking, extending throughout the length of the rope or cable comprising elements for indicating or detecting the rope or cable status
    • 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
    • D07B1/148—Ropes or cables with incorporated auxiliary elements, e.g. for marking, extending throughout the length of the rope or cable comprising marks or luminous elements
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/16—Ropes or cables with an enveloping sheathing or inlays of rubber or plastics
    • D07B1/165—Ropes or cables with an enveloping sheathing or inlays of rubber or plastics characterised by a plastic or rubber inlay
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2047—Cores
    • D07B2201/2051—Cores characterised by a value or range of the dimension given
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2047—Cores
    • D07B2201/2052—Cores characterised by their structure
    • D07B2201/2053—Cores characterised by their structure being homogeneous
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2047—Cores
    • D07B2201/2052—Cores characterised by their structure
    • D07B2201/2055—Cores characterised by their structure comprising filaments or fibers
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2047—Cores
    • D07B2201/2052—Cores characterised by their structure
    • D07B2201/2065—Cores characterised by their structure comprising a coating
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2047—Cores
    • D07B2201/2066—Cores characterised by the materials used
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2205/00—Rope or cable materials
    • D07B2205/20—Organic high polymers
    • D07B2205/2003—Thermoplastics
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2205/00—Rope or cable materials
    • D07B2205/20—Organic high polymers
    • D07B2205/201—Polyolefins
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2205/00—Rope or cable materials
    • D07B2205/20—Organic high polymers
    • D07B2205/2039—Polyesters
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • 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
    • D07B2401/207—Reducing wear internally
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2501/00—Application field
    • D07B2501/20—Application field related to ropes or cables
    • D07B2501/2007—Elevators

Definitions

  • the present invention relates to a moving wire rope used for an elevator moving cord or the like.
  • the wire rope used for the elevator moving rope is configured by further twisting a strand in which a plurality of wires are twisted together around a core material.
  • a core material In conventional wire ropes for moving cords, many fiber cores and steel cores are used. Such a core material is gradually worn and thinned by repeated bending after a certain period of use. When the core material is thinned, there is a problem that abrasion powder is generated due to contact between the strands, the wire rope is stretched, the wire rope itself is damaged, and the strength is lowered. Therefore, a wire rope using a resin such as polyethylene or polypropylene as a core material has been proposed (for example, see Patent Document 1).
  • the standard for exchanging wire rope for moving cables is stipulated by each law (for example, occupational safety and health regulations, crane safety regulations, gondola structure standards, elevator inspection standards (JISA4302), etc.), and the rope diameter is below a certain level. It must be replaced when it becomes thin. Therefore, it is an important matter to maintain and manage the diameter (thickness) of the moving wire rope. This is because if the timing for measuring the diameter state is delayed or there is a measurement error, it may lead to a serious accident.
  • the conventional wire rope for moving cords has a problem that it is not easy to confirm the rope diameter regardless of whether it is a fiber core or a resin core. That is, when measuring the diameter using a measuring tool (vernier caliper) as specified in JISG3525, it is necessary to stop the machine (for example, an elevator) and perform measurement at a plurality of locations. It takes time and effort. At this time, if the number of measurement points is increased, the accuracy of the state detection of the moving wire rope can be improved, but if the machine stoppage is taken into consideration, there are time restrictions and the measurement points are also limited. There is a limit to the improvement of accuracy.
  • the present invention has been made in view of such a problem, and an object thereof is to provide a wire rope for moving rope that is excellent in performance and facilitates the state measurement of the rope diameter and contributes to safety improvement. To do.
  • a wire rope for moving cords is a wire rope for moving cords formed by twisting a plurality of strands around a resin core which is a resin core material, and the resin rope
  • the core is composed of a plurality of resin layers, and the resin materials of the adjacent resin layers are different or / and the color arrangement of the adjacent layers is different.
  • each layer is made of a different resin material, and each layer is made of a different color, it is possible to easily measure the state of the rope diameter.
  • the wire rope for moving ropes changes due to wear over time, and the resin material constituting each layer wears sequentially from the outer layer into powder, so the rope diameter depends on the amount of powder generated. It is possible to estimate the state of the rope, and to obtain a rough standard for rope replacement.
  • the resin layer on the outer side of the center side of the resin core is configured to have higher durability against abrasion of the resin layer.
  • a multi-layered structure using a relatively inexpensive resin material on the inner side where abrasion is difficult can be achieved by using a resin material having excellent durability against wear on the outer side where wear is likely to proceed.
  • a wire rope for moving cords with a resin core is realized.
  • the color arrangement of the resin layer outside the resin layer on the center side of the resin core is a light color system.
  • the resin core has a multi-layer structure made of different materials, the state of the rope diameter can be judged by the resin material that has become powder after being worn. As a result, it is possible to obtain a standard for rope replacement standards, which in turn contributes to an improvement in safety.
  • FIG. 1 is a cross-sectional view of a moving wire rope according to this embodiment.
  • the moving wire rope 1 is a wire rope used for an elevator moving rope or the like, which is formed by twisting a plurality of strands 2 around a core material.
  • a wire rope used for an elevator moving rope or the like which is formed by twisting a plurality of strands 2 around a core material.
  • eight strands 2 are twisted together is illustrated, but there are cases where the strands are composed of six strands.
  • the wire rope 1 for moving cords is provided with a resin core 3 as a core material.
  • the resin core 3 is composed of a first resin layer 4 and a second resin layer 5 and has a multilayer structure.
  • the 1st resin layer 4 and the 2nd resin layer 5 which comprise the resin core 3 are formed with thermoplastic resin materials, such as polyethylene, a polypropylene, and polyester.
  • the resin material constituting the first resin layer 4 and the resin material constituting the second resin layer are different from each other.
  • the first resin layer 4 serving as the central portion is made of a relatively inexpensive polyethylene or polypropylene resin material
  • the second resin layer 5 serving as the outside is made of a highly durable resin material such as high-density polyethylene or polyester.
  • the low-cost but high-performance resin core 3 can be configured.
  • the resin core has a multi-layer structure, and the materials constituting each layer are different, so that the diameter of the rope that changes over time can be confirmed by the resin material that has become worn and powdered. become.
  • the fact that the resin material is powdered due to wear means that the layer is exposed at any point.
  • the thickness of each layer is preferably 1 mm or more in order to generate a certain amount of powder that can be confirmed visually by the measurer.
  • FIG. 2 is a diagram for explaining the ratio of the resin core.
  • the diameter B of the resin core 3 before the strands are twisted is preferably 55 to 65% of the rope diameter A. This is because if it falls below 55%, finding a decrease in the rope diameter may be delayed. On the other hand, if it exceeds 65%, the rope diameter will be reduced at an earlier stage than the time when the rope should be replaced, and the life of the rope may be shortened.
  • the diameter B of the resin core is preferably 35 to 45% of the rope diameter A. The reason is the same as above.
  • FIG. 3 is a cross-sectional view showing another example of the resin core.
  • the resin core 3 a shown in FIG. 3 is composed of the first resin layer 4, the second resin layer 5, and the third resin layer 6.
  • the color arrangement of each layer may be different instead of changing the resin material. For example, if colors close to the primary colors of cyan (C), magenta (M), and yellow (Y), which are the three primary colors, are arranged in each layer, the diameter of the rope can be easily adjusted by the resin material that has become worn and powdered. The state of can be confirmed.
  • the difference in color arrangement may be different depending on the shades of similar colors. In this case, for example, it is preferable to arrange the colors from the dark color system to the light color system from the inner side to the outer side of the center of the heart.
  • the rope If the rope is worn and the resin material becomes powder, it can be determined to which layer the rope has been worn depending on the color of the powder. Further, since the rope is worn over the long direction, it is possible to visually determine that a layer having a different color scheme is exposed at any location.
  • the thickness of each layer may be different.
  • the thickness may be increased using a resin material with excellent durability, and a different color may be used, or the resin material with excellent durability and a relatively inexpensive resin material may be used.
  • a resin core suitable for the equipment using the wire rope for moving cords such as alternately arranging and increasing or decreasing the thickness of each layer. If the resin material of at least the adjacent layers of the multilayer structure is made different or the color arrangement is made different, the state of the rope diameter can be grasped by the powder of the resin material caused by the wear of the rope. There are many possible patterns for the resin core having a suitable multilayer structure.
  • the present invention can be applied as a moving wire rope used for an elevator moving cord or the like.

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  • Ropes Or Cables (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)

Abstract

[Problem] To provide a running wire rope with superior performance, making measurement of rope diameter state easy, and conducive to improving safety. [Solution] A running wire rope 1 is formed by intertwining a plurality of strands 2 around a resin core 3, which is a core material made of resin, and is characterized in that the resin core 3 is formed from a plurality of first resin layers 4 and second resin layers 5, and the resin material for adjacent first resin layers 4 and second resin layers 5 is different, or the coloration of adjacent layers is different.

Description

動索用ワイヤロープWire rope for moving cable
　本発明は、エレベータ用動索などに用いられる動索用ワイヤロープに関する。 The present invention relates to a moving wire rope used for an elevator moving cord or the like.
　エレベータ用動索に使用されるワイヤロープは、複数のワイヤが撚り合わされたストランドを、心材を中心としてさらに撚り合わせることで構成されている。従来の動索用ワイヤロープでは、繊維心や鋼製の心材が多く用いられている。このような心材は、一定期間の使用を経ると曲げの繰り返し等によって徐々に摩耗して細くなっていく。心材が細くなると、ストランド同士の接触により摩耗粉が発生したり、ワイヤロープに伸びを生じさせてたり、ワイヤロープ自体が傷み、強度が低下するという問題があった。そのため、ポリエチレンやポリプロピレン等の樹脂を心材として用いたワイヤロープが提案されるようになっている（例えば、特許文献１参照。）。 The wire rope used for the elevator moving rope is configured by further twisting a strand in which a plurality of wires are twisted together around a core material. In conventional wire ropes for moving cords, many fiber cores and steel cores are used. Such a core material is gradually worn and thinned by repeated bending after a certain period of use. When the core material is thinned, there is a problem that abrasion powder is generated due to contact between the strands, the wire rope is stretched, the wire rope itself is damaged, and the strength is lowered. Therefore, a wire rope using a resin such as polyethylene or polypropylene as a core material has been proposed (for example, see Patent Document 1).
特開２０１０－１４４３０５号公報JP 2010-144305 A
　動索用ワイヤロープは、その交換基準が各法規によって定められており（例えば、労働安全衛生規則・クレーン等安全規則・ゴンドラ構造規格・昇降機検査基準（JISA4302）等。）、ロープ径が一定以下の細さになると交換しなければならない。そのため、動索用ワイヤロープの径（太さ）を維持し管理することが重要事項となっている。径の状態を測定する時期が遅くなったり、測定ミスがあったりすると重大な事故につながりかねないからである。 The standard for exchanging wire rope for moving cables is stipulated by each law (for example, occupational safety and health regulations, crane safety regulations, gondola structure standards, elevator inspection standards (JISA4302), etc.), and the rope diameter is below a certain level. It must be replaced when it becomes thin. Therefore, it is an important matter to maintain and manage the diameter (thickness) of the moving wire rope. This is because if the timing for measuring the diameter state is delayed or there is a measurement error, it may lead to a serious accident.
　しかしながら、従来の動索用ワイヤロープでは、繊維心であれ樹脂心であれ、ロープ径の確認が容易ではないという問題がある。すなわち、JISG3525に明記されているように測定工具（ノギス）を用いて径を測定するにあたっては、測定するために機械（例えば昇降機）を停止させ、複数箇所の測定を行う必要があり、多大な時間と労力を要する。このとき、測定箇所を多くすれば動索用ワイヤロープの状態検知の精度を上げることができるが、機械停止を考慮すれば時間的な制約があり、測定箇所も限定されてしまうため、状態検知の精度向上も限界がある。 However, the conventional wire rope for moving cords has a problem that it is not easy to confirm the rope diameter regardless of whether it is a fiber core or a resin core. That is, when measuring the diameter using a measuring tool (vernier caliper) as specified in JISG3525, it is necessary to stop the machine (for example, an elevator) and perform measurement at a plurality of locations. It takes time and effort. At this time, if the number of measurement points is increased, the accuracy of the state detection of the moving wire rope can be improved, but if the machine stoppage is taken into consideration, there are time restrictions and the measurement points are also limited. There is a limit to the improvement of accuracy.
　そこで、本発明は、このような問題に鑑みなされたものであり、性能に優れ、かつ、ロープ径の状態測定を容易にして安全性向上に資する動索用ワイヤロープを提供することを目的とする。 Therefore, the present invention has been made in view of such a problem, and an object thereof is to provide a wire rope for moving rope that is excellent in performance and facilitates the state measurement of the rope diameter and contributes to safety improvement. To do.
　上記課題を解決するために、本発明に係る動索用ワイヤロープは、樹脂製の心材である樹脂心の周囲に複数本のストランドを撚り合わせてなる動索用ワイヤロープであって、前記樹脂心が複数の樹脂層からなり、隣り合う樹脂層の樹脂材が異なる、または／および、隣り合う層の配色が異なることを特徴とする。 In order to solve the above-mentioned problem, a wire rope for moving cords according to the present invention is a wire rope for moving cords formed by twisting a plurality of strands around a resin core which is a resin core material, and the resin rope The core is composed of a plurality of resin layers, and the resin materials of the adjacent resin layers are different or / and the color arrangement of the adjacent layers is different.
　これによれば、樹脂心を複層構造として各層を異なる樹脂材で構成したり、各層を異なる配色で構成するので、ロープ径の状態測定を容易にすることができる。すなわち、動索用ワイヤロープは経年的に摩耗して変化するところ、各層を構成する樹脂材は外側の層から順次摩耗して粉体となっていくので、この粉体の発生量によってロープ径の状態を推し量ることができ、ロープの交換基準の目安が得られる。 According to this, since the resin core has a multi-layer structure, each layer is made of a different resin material, and each layer is made of a different color, it is possible to easily measure the state of the rope diameter. In other words, the wire rope for moving ropes changes due to wear over time, and the resin material constituting each layer wears sequentially from the outer layer into powder, so the rope diameter depends on the amount of powder generated. It is possible to estimate the state of the rope, and to obtain a rough standard for rope replacement.
　ここで、樹脂心の中心側の樹脂層よりも外側の樹脂層の摩耗に対する耐久性が高くなるよう構成されているのが好ましい。 Here, it is preferable that the resin layer on the outer side of the center side of the resin core is configured to have higher durability against abrasion of the resin layer.
　これによれば、摩耗が進みやすい外側に摩耗に対する耐久性に優れた樹脂材を用いて、摩耗されにくい内側を比較的安価な樹脂材を用いる複層構造とできるので、低コストで高性能な樹脂心を備えた動索用ワイヤロープが実現される。 According to this, a multi-layered structure using a relatively inexpensive resin material on the inner side where abrasion is difficult can be achieved by using a resin material having excellent durability against wear on the outer side where wear is likely to proceed. A wire rope for moving cords with a resin core is realized.
　また、樹脂心の中心側の樹脂層よりも外側の樹脂層の配色が淡色系になるよう構成されているのも好ましい。 It is also preferable that the color arrangement of the resin layer outside the resin layer on the center side of the resin core is a light color system.
　これによれば、摩耗により発生する粉体が淡色系から濃色系へと変化していくので、ロープ径の状態を一見して把握することが可能となる。 According to this, since the powder generated by wear changes from a light color system to a dark color system, it is possible to grasp the state of the rope diameter at a glance.
　以上のように、本発明に係る動索用ワイヤロープによれば、樹脂心を異なる素材の複層構造としているので、ロープ径の状態を摩耗して粉体となった樹脂材で判断可能になり、ロープの交換基準の目安を得ることができ、ひいては、安全性向上に資するものとなる。 As described above, according to the wire rope for moving cords according to the present invention, since the resin core has a multi-layer structure made of different materials, the state of the rope diameter can be judged by the resin material that has become powder after being worn. As a result, it is possible to obtain a standard for rope replacement standards, which in turn contributes to an improvement in safety.
動索用ワイヤロープの断面図である。It is sectional drawing of the wire rope for moving cords. 樹脂心の比率を説明するための図である。It is a figure for demonstrating the ratio of the resin core. 樹脂心の別の例を示す断面図である。It is sectional drawing which shows another example of the resin core.
　以下、本発明の実施形態について図面を参照しながら説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
　図１は、本実施形態の動索用ワイヤロープの断面図である。 FIG. 1 is a cross-sectional view of a moving wire rope according to this embodiment.
　動索用ワイヤロープ１は、心材の周囲に複数本のストランド２を撚り合わせることにより構成される、エレベータ用動索などに使用されるワイヤロープである。ここでは８本のストランド２を撚り合わせた例を図示しているが、６本のストランドで構成される場合もある。 The moving wire rope 1 is a wire rope used for an elevator moving rope or the like, which is formed by twisting a plurality of strands 2 around a core material. Here, an example in which eight strands 2 are twisted together is illustrated, but there are cases where the strands are composed of six strands.
　動索用ワイヤロープ１は、心材として樹脂心３を備えている。この樹脂心３は、第１樹脂層４と第２樹脂層５とから構成されており、複層構造となっている。樹脂心３を構成する第１樹脂層４および第２樹脂層５は、ポリエチレンやポリプロピレン、ポリエステルなどの熱可塑性樹脂材で形成されている。 The wire rope 1 for moving cords is provided with a resin core 3 as a core material. The resin core 3 is composed of a first resin layer 4 and a second resin layer 5 and has a multilayer structure. The 1st resin layer 4 and the 2nd resin layer 5 which comprise the resin core 3 are formed with thermoplastic resin materials, such as polyethylene, a polypropylene, and polyester.
　第１樹脂層４を構成する樹脂材と第２樹脂層を構成する樹脂材とは異なるものが用いられている。例えば、中心部分となる第１樹脂層４を比較的安価なポリエチレンやポリプロピレンの樹脂材とし、その外側となる第２樹脂層５を高密度ポリエチレンやポリエステルといった高耐久性の樹脂材を用いた場合、低コストでありながら高性能な樹脂心３を構成することができる。 The resin material constituting the first resin layer 4 and the resin material constituting the second resin layer are different from each other. For example, when the first resin layer 4 serving as the central portion is made of a relatively inexpensive polyethylene or polypropylene resin material, and the second resin layer 5 serving as the outside is made of a highly durable resin material such as high-density polyethylene or polyester. The low-cost but high-performance resin core 3 can be configured.
　このように、樹脂心を複層構造として各層を構成する素材を異ならせているので、経年的に変化するロープの径を、摩耗して粉体となった樹脂材により確認することができるようになる。摩耗して樹脂材が粉体となっているということは、当該層がいずれかの箇所において露出していることになる。特にロープは長尺方向に亘って摩耗が進むため、樹脂材の粉体は一定量が発生することになり、ロープの交換基準の目安を得ることができる。なお、測定者が目視で発生を確認できる程度の一定量の粉体を発生させるために、各層の厚みは１ｍｍ以上とするのが好ましい。 In this way, the resin core has a multi-layer structure, and the materials constituting each layer are different, so that the diameter of the rope that changes over time can be confirmed by the resin material that has become worn and powdered. become. The fact that the resin material is powdered due to wear means that the layer is exposed at any point. In particular, since the rope wears out in the long direction, a certain amount of the powder of the resin material is generated, and it is possible to obtain a rough standard for exchanging the rope. It should be noted that the thickness of each layer is preferably 1 mm or more in order to generate a certain amount of powder that can be confirmed visually by the measurer.
　図２は、樹脂心の比率を説明するための図である。 FIG. 2 is a diagram for explaining the ratio of the resin core.
　８本のストランド２を撚り合わせた動索用ワイヤロープ１の場合、ストランドが撚り合わされる前の樹脂心３の径Ｂは、ロープ径Ａの５５～６５％とするのが好ましい。５５％を下回ると、ロープ径の減少を発見することが遅れるおそれがでてくるからである。一方、６５％を上回ると、ロープ径の減少を交換すべき時期より早い段階で交換を促すことになり、ロープの寿命を早めてしまうおそれがでてくるからである。 In the case of the wire rope for moving rope 1 in which the eight strands 2 are twisted, the diameter B of the resin core 3 before the strands are twisted is preferably 55 to 65% of the rope diameter A. This is because if it falls below 55%, finding a decrease in the rope diameter may be delayed. On the other hand, if it exceeds 65%, the rope diameter will be reduced at an earlier stage than the time when the rope should be replaced, and the life of the rope may be shortened.
　なお、６本のストランドを撚り合わせた動索用ワイヤロープの場合は、樹脂心の径Ｂは、ロープ径Ａの３５～４５％とするのが好ましい。理由は上記と同様である。 In addition, in the case of a wire rope for moving rope in which six strands are twisted, the diameter B of the resin core is preferably 35 to 45% of the rope diameter A. The reason is the same as above.
　図３は、樹脂心の別の例を示す断面図である。 FIG. 3 is a cross-sectional view showing another example of the resin core.
　図３に示す樹脂心３ａは、第１樹脂層４と第２樹脂層５と第３樹脂層６の各層により構成されている。各層を形成する樹脂材を異ならせるだけでなく、または、樹脂材を異ならせることに替えて、各層の配色を異ならせるとしてもよい。例えば、色料の三原色であるシアン（C）・マゼンタ（M）・イエロー（Y）の原色に近い色を各層にそれぞれ配色すれば、摩耗して粉体となった樹脂材により容易にロープ径の状態を確認することができる。配色の相違は、同系色の濃淡で差異をつけるとしてもよく、この場合は、例えば、心の中心内側から外側に向けて濃色系から淡色系に配色するのが好ましい。ロープが摩耗して樹脂材が粉体となれば、粉体の色によってどの層までロープの摩耗が進んでいるかを判断することができる。また、ロープは長尺方向に亘って摩耗するので、いずれかの箇所において配色が異なる層が露出していると目視による判断も可能となる。 The resin core 3 a shown in FIG. 3 is composed of the first resin layer 4, the second resin layer 5, and the third resin layer 6. Not only the resin material forming each layer is different, but the color arrangement of each layer may be different instead of changing the resin material. For example, if colors close to the primary colors of cyan (C), magenta (M), and yellow (Y), which are the three primary colors, are arranged in each layer, the diameter of the rope can be easily adjusted by the resin material that has become worn and powdered. The state of can be confirmed. The difference in color arrangement may be different depending on the shades of similar colors. In this case, for example, it is preferable to arrange the colors from the dark color system to the light color system from the inner side to the outer side of the center of the heart. If the rope is worn and the resin material becomes powder, it can be determined to which layer the rope has been worn depending on the color of the powder. Further, since the rope is worn over the long direction, it is possible to visually determine that a layer having a different color scheme is exposed at any location.
　また、各層の樹脂材の相違、各層の配色の相違に加えて、各層の厚みも相違させてもよい。例えば、心の中心内側から外側に向けて、耐久性に優れた樹脂材を用いて厚みを増やし、さらに異なる配色をするとしてもよいし、耐久性に優れた樹脂材と比較的安価な樹脂材とを交互に配したり、各層の厚みに強弱をつけたりするなど、動索用ワイヤロープの使用機器に適応した樹脂心を構成することも可能となる。少なくとも複層構造の隣り合う層の樹脂材を異ならせるか配色を異ならせることにすれば、ロープの摩耗によって生じる樹脂材の粉体によってロープ径の状態を把握することができるので、用途等に適した複層構造の樹脂心は多くのパターンが考えられる。 Further, in addition to the difference in the resin material of each layer and the difference in the color scheme of each layer, the thickness of each layer may be different. For example, from the center inner side to the outer side, the thickness may be increased using a resin material with excellent durability, and a different color may be used, or the resin material with excellent durability and a relatively inexpensive resin material may be used. It is also possible to construct a resin core suitable for the equipment using the wire rope for moving cords, such as alternately arranging and increasing or decreasing the thickness of each layer. If the resin material of at least the adjacent layers of the multilayer structure is made different or the color arrangement is made different, the state of the rope diameter can be grasped by the powder of the resin material caused by the wear of the rope. There are many possible patterns for the resin core having a suitable multilayer structure.
　以上、本発明に係る動索用ワイヤロープについて、各実施の形態に基づいて説明したが本発明はこれに限定されるものではなく、本発明の目的を達成でき、かつ発明の要旨を逸脱しない範囲内で種々設計変更が可能であり、それらも全て本発明の範囲内に包含されるものである。 Although the moving wire rope according to the present invention has been described based on each embodiment, the present invention is not limited to this, and the object of the present invention can be achieved and does not depart from the gist of the invention. Various design changes are possible within the scope, and they are all included in the scope of the present invention.
　本発明は、エレベータ用動索などに用いられる動索用ワイヤロープとして適用可能である。 The present invention can be applied as a moving wire rope used for an elevator moving cord or the like.
　１　動索用ワイヤロープ
　２　ストランド
　３，３ａ　樹脂心
　４　第１樹脂層
　５　第２樹脂層
　６　第３樹脂層
  DESCRIPTION OF SYMBOLS 1 Wire rope for moving cords 2 Strands 3, 3a Resin core 4 1st resin layer 5 2nd resin layer 6 3rd resin layer

Claims (3)

  1. 　樹脂製の心材である樹脂心の周囲に複数本のストランドを撚り合わせてなる動索用ワイヤロープであって、
    　前記樹脂心が複数の樹脂層からなり、隣り合う樹脂層の樹脂材が異なる、または／および、隣り合う層の配色が異なる
    　ことを特徴とする動索用ワイヤロープ。     A wire rope for moving rope formed by twisting a plurality of strands around a resin core, which is a resin core material,
    The wire rope for moving cords, wherein the resin core is composed of a plurality of resin layers, and the resin materials of the adjacent resin layers are different or / and the colors of the adjacent layers are different.
  2. 　樹脂心の中心側の樹脂層よりも外側の樹脂層の摩耗に対する耐久性が高くなるよう構成されている
    　ことを特徴とする請求項１記載の動索用ワイヤロープ。     The wire rope for moving cords according to claim 1, wherein the rope is configured to have higher durability against abrasion of a resin layer on the outer side than the resin layer on the center side of the resin core.
  3. 　樹脂心の中心側の樹脂層よりも外側の樹脂層の配色が淡色系になるよう構成されている
    　ことを特徴とする請求項１または２記載の動索用ワイヤロープ。
          The wire rope for moving cords according to claim 1 or 2, wherein the color arrangement of the resin layer outside the resin layer on the center side of the resin core is light-colored.
PCT/JP2016/068966 2016-05-30 2016-06-27 Running wire rope WO2017208469A1 (en)

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