JP2003281942A - Low thermal expansion wire shaped body - Google Patents
Low thermal expansion wire shaped bodyInfo
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- JP2003281942A JP2003281942A JP2002083665A JP2002083665A JP2003281942A JP 2003281942 A JP2003281942 A JP 2003281942A JP 2002083665 A JP2002083665 A JP 2002083665A JP 2002083665 A JP2002083665 A JP 2002083665A JP 2003281942 A JP2003281942 A JP 2003281942A
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- Prior art keywords
- thermal expansion
- low thermal
- dyneema
- trolley wire
- linear
- Prior art date
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、低熱膨張線状体に
係り、特に、トロリ線に適用される低熱膨張線状体に関
するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a low thermal expansion linear body, and more particularly to a low thermal expansion linear body applied to a trolley wire.
【０００２】[0002]
【従来の技術】トロリ線などの線状体は、温度変化によ
り収縮膨張する。このため熱膨張の影響を防止するため
の設備（張力調整装置）が不可欠であり、敷設時の作業
が増加するとともに、設備のメンテナンスなどが必要に
なる。2. Description of the Related Art A linear body such as a trolley wire contracts and expands due to a change in temperature. For this reason, equipment (tension adjusting device) for preventing the influence of thermal expansion is indispensable, and the work at the time of laying increases, and maintenance of the equipment is required.
【０００３】そこで、かかる熱膨張による影響をなくす
ためには、線膨張係数の小さい線状体の開発が必要であ
る。Therefore, in order to eliminate the influence of such thermal expansion, it is necessary to develop a linear body having a small linear expansion coefficient.
【０００４】図９は従来のトロリ線を架設した状態を示
す図である。FIG. 9 is a view showing a state in which a conventional trolley wire is installed.
【０００５】この図において、１０１，１０２は支持
体、１０３は支持体１０１と１０２間に架設されたトロ
リ線、１０４は張力調整装置である。In this figure, 101 and 102 are supports, 103 is a trolley wire installed between the supports 101 and 102, and 104 is a tension adjusting device.
【０００６】この図に示すように、トロリ線１０３は、
車両の高速化に伴い弦としての横波の伝搬速度を向上さ
せるため高張力で架設する必要がある。しかし、温度変
化によりトロリ線１０３は伸縮するため、端部には張力
調整装置１０４を設置して張力を一定に保持するように
している。As shown in this figure, the trolley wire 103 is
As the speed of vehicles increases, it is necessary to erect with high tension in order to improve the propagation speed of transverse waves as a string. However, since the trolley wire 103 expands and contracts due to temperature changes, a tension adjusting device 104 is installed at the end to keep the tension constant.
【０００７】[0007]
【発明が解決しようとする課題】上記したように、従来
のトロリ線では、温度変化により伸縮するため、端部に
は張力調整装置１０４を設置して張力を一定に保持する
必要があり、そのため、張力調整装置の設置コストが嵩
み、また点検保守が必要である。As described above, since the conventional trolley wire expands and contracts due to temperature changes, it is necessary to install a tension adjusting device 104 at the end to keep the tension constant. The installation cost of the tension adjusting device is high, and inspection and maintenance are required.
【０００８】もともと、トロリ線は、耐摩耗性と機械的
強度を上げることを目的としており、複合構造のトロリ
線として、導体にアルミ、芯材に軟鋼を用いた鋼心アル
ミニウムトロリ線（ＴＡトロリ線）と、導体に銅、芯材
に炭素鋼を用いた銅被覆鋼線（ＣＳトロリ線）の開発実
績がある。Originally, the trolley wire was intended to improve wear resistance and mechanical strength, and as a trolley wire of a composite structure, a steel core aluminum trolley wire (TA trolley wire using aluminum as a conductor and mild steel as a core material). Wire) and copper-coated steel wire (CS trolley wire) using copper for the conductor and carbon steel for the core material.
【０００９】しかしながら、上記した複合構造のトロリ
線では複合される材料は全て正の熱膨張係数を有する材
料であり、その熱膨張を極力抑えるには難があった。However, in the trolley wire having the above-mentioned composite structure, the materials to be composited are all materials having a positive coefficient of thermal expansion, and it has been difficult to suppress the thermal expansion as much as possible.
【００１０】本発明は、上記状況に鑑みて、正の線膨張
特性を持つ導電性材料と負の線膨張特性を持つ材料との
複合構造化を図り、熱膨張を極力抑えることができる低
熱膨張線状体を提供することを目的とする。In view of the above situation, the present invention has a low thermal expansion capable of suppressing the thermal expansion as much as possible by achieving a composite structure of a conductive material having a positive linear expansion characteristic and a material having a negative linear expansion characteristic. It is intended to provide a linear body.
【００１１】[0011]
【課題を解決するための手段】本発明は、上記目的を達
成するために、
〔１〕正の線膨張特性を持つ導電性材料と負の線膨張特
性を持つ材料との複合構造からなることを特徴とする。In order to achieve the above object, the present invention comprises [1] a composite structure of a conductive material having a positive linear expansion characteristic and a material having a negative linear expansion characteristic. Is characterized by.
【００１２】〔２〕上記〔１〕記載の低熱膨張線状体に
おいて、前記材料が超高分子量ポリエチレン繊維である
ことを特徴とする。[2] The low thermal expansion linear member as described in [1] above is characterized in that the material is an ultra high molecular weight polyethylene fiber.
【００１３】〔３〕上記〔１〕記載の低熱膨張線状体に
おいて、前記材料がポリパラフェニレンベンゾビスオキ
サゾール（ＰＢＯ）を液晶紡糸した繊維であることを特
徴とする。[3] The low thermal expansion linear body according to the above [1], characterized in that the material is a liquid crystal-spun fiber of polyparaphenylenebenzobisoxazole (PBO).
【００１４】〔４〕上記〔１〕、〔２〕又は〔３〕記載
の低熱膨張線状体がトロリ線であることを特徴とする。[4] The low thermal expansion linear body according to the above [1], [2] or [3] is a trolley wire.
【００１５】[0015]
【発明の実施の形態】以下、本発明の実施の形態につい
て、詳細に説明する。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below.
【００１６】ここでは、本発明をトロリ線に適用した場
合について説明する。Here, a case where the present invention is applied to a trolley wire will be described.
【００１７】図１は本発明の実施例を示すトロリ線を架
設した状態を示す図である。FIG. 1 is a view showing a state in which a trolley wire according to an embodiment of the present invention is installed.
【００１８】この図において、１，２は支持体、３は支
持体１と２間に架設された低熱膨張線状体からなるトロ
リ線、４は簡易張力調整装置である。In this figure, 1 and 2 are supports, 3 is a trolley wire made of a low thermal expansion linear member that is installed between the supports 1 and 2, and 4 is a simple tension adjusting device.
【００１９】なお、従来用いられている張力調整装置
は、滑車と重りを組み合わせた構造が主流であり、その
機構が複雑であり定期的に検査が必要であった。本発明
のように線膨張係数が小さくなると、トロリ線の伸縮量
が小さくなるので、油圧、ガス圧、バネ式などの簡易な
張力調整装置が使用できる。また、線膨張係数を０にで
きれば、伸縮がなくなり、張力をかけて架設すれば、張
力調整装置は不要となる。Incidentally, the tension adjusting device used conventionally has a structure in which a pulley and a weight are combined, and its mechanism is complicated, so that periodical inspection is required. When the linear expansion coefficient is small as in the present invention, the amount of expansion and contraction of the trolley wire is small, so that a simple tension adjusting device such as hydraulic pressure, gas pressure, or spring type can be used. Further, if the linear expansion coefficient can be set to 0, expansion and contraction will disappear, and if tension is applied to construct the structure, the tension adjusting device becomes unnecessary.
【００２０】まず、低熱膨張線状体からなるトロリ線に
ついて説明する。First, a trolley wire made of a low thermal expansion linear material will be described.
【００２１】図２は本発明にかかる低熱膨張線状体から
なるトロリ線の模式図である。FIG. 2 is a schematic view of a trolley wire made of a low thermal expansion linear body according to the present invention.
【００２２】本発明の低熱膨張線状体からなるトロリ線
１１は、銅、アルミニウム導体１２の中に、フィラ状、
線状、ケーブル状、棒状の負の線膨張係数を持つ有機材
料１３を埋め込む。この負の線膨張係数を持つ有機材料
１３として、超高分子量ポリエチレン繊維「ダイニー
マ」（東洋紡製）やポリパラフェニレンベンゾビスオキ
サゾール（ＰＢＯ）を液晶紡糸した繊維「ザイロン」
（東洋紡製）を用いる。The trolley wire 11 made of the low-thermal-expansion linear material of the present invention comprises a copper- and aluminum conductor 12 and a filler-like
An organic material 13 having a linear, cable, or rod-shaped negative linear expansion coefficient is embedded. As the organic material 13 having this negative linear expansion coefficient, ultra high molecular weight polyethylene fiber "Dyneema" (manufactured by Toyobo) or polyparaphenylene benzobisoxazole (PBO) liquid crystal spun fiber "Zylon"
(Manufactured by Toyobo) is used.
【００２３】有機材料系の新材料である超高分子量ポリ
エチレン繊維（ダイニーマ）、ＰＢＯ繊維（ザイロン）
は、負の線膨張係数を持つ材料であり、ザイロンは、室
温付近で−８×１０-6／Ｋ程度での負膨張を示し、ダイ
ニーマはザイロンより大きな負膨張の特性がある。な
お、ダイニーマ、ザイロンなどの新材料には、高強力、
高弾性率で耐衝撃特性が高い、比重が小さいなどの特性
もある。Ultra-high molecular weight polyethylene fiber (Dyneema), PBO fiber (Zylon), which is a new organic material
Is a material having a negative linear expansion coefficient, Zylon exhibits a negative expansion of about −8 × 10 −6 / K around room temperature, and Dyneema has a larger negative expansion characteristic than Zyron. For new materials such as Dyneema and Zylon, high strength,
It also has high elastic modulus, high impact resistance, and low specific gravity.
【００２４】また、ダイニーマ、ザイロンの他にも、−
２〜８×１０-6／Ｋ程度の負の線膨張特性を示す負膨張
ガラスセラミックスが開発されており、こうした材料を
使用することもできる。In addition to Dyneema and Zylon,
Negative expansion glass-ceramics exhibiting a negative linear expansion characteristic of about 2 to 8 × 10 −6 / K have been developed, and such materials can also be used.
【００２５】ダイニーマ、ザイロンを芯材に使用する場
合には、従来のＣＳトロリ線の製造方法が使用できる可
能性がある。この場合、熱的な問題があるため、ディッ
プフォーミング法よりコンフォーム法のような方法が適
していると考えられる。When Dyneema or Zylon is used as the core material, there is a possibility that the conventional CS trolley wire manufacturing method can be used. In this case, since there is a thermal problem, it is considered that a method such as the conform method is more suitable than the dip forming method.
【００２６】表１に、ダイニーマ、ザイロンとの比較の
ためにスチールファイバーの諸特性を示した。Table 1 shows various characteristics of steel fibers for comparison with Dyneema and Zylon.
【００２７】[0027]
【表１】 [Table 1]
【００２８】ダイニーマ、ザイロンともに繊維方向に負
の線膨張係数を持つ他、比重が金属の数分の１と軽量
で、特にザイロンは金属やアラミドなどの従来の高機能
繊維などに比べて高強度、高弾性率で、耐衝撃特性の良
い材料である。Both Dyneema and Zylon have a negative linear expansion coefficient in the fiber direction, and their specific gravity is a fraction of that of metal, which is light weight. Especially, Zylon has higher strength than conventional high-performance fibers such as metal and aramid. It has high elastic modulus and good impact resistance.
【００２９】ダイニーマ、ザイロンの比重は、０．９８
ｇ／ｃｍ3 及び１．５６ｇ／ｃｍ3で、鋼線の比重７．
８ｇ／ｃｍ3 と比べて１／９および１／５である。The specific gravity of Dyneema and Zylon is 0.98.
In g / cm 3 and 1.56 g / cm 3, the specific gravity of the steel wire 7.
1/9 and 1/5 compared to 8 g / cm 3 .
【００３０】ダイニーマ、ザイロンを芯材に用いたトロ
リ線では、低熱収縮の効果の他に、ダイニーマ、ザイロ
ンの機械特性などから、以下のような効果も期待でき
る。In the trolley wire using Dyneema or Zylon as the core material, the following effects can be expected from the mechanical properties of Dyneema and Zylon in addition to the effect of low heat shrinkage.
【００３１】（１）鋼線に比べるとダイニーマ、ザイロ
ンは比重が１／９および１／５と小さく、トロリ線の軽
量化ができる。(1) Compared with steel wire, Dyneema and Zylon have a small specific gravity of 1/9 and 1/5, and the weight of the trolley wire can be reduced.
【００３２】（２）耐衝撃特性が高く、エネルギー吸収
部材として使用できるので、トロリ線の振動特性を向上
させることができる。(2) Since it has a high impact resistance and can be used as an energy absorbing member, it is possible to improve the vibration characteristics of the trolley wire.
【００３３】（３）トロリ線交換後の処理において、芯
材が有機材料であることから銅と分離が容易になり、リ
サイクルが容易になる。(3) In the process after the exchange of the trolley wire, since the core material is an organic material, it is easy to separate it from copper, which facilitates recycling.
【００３４】負の線膨張係数を持つ材料との複合化によ
る低熱膨張線状体開発の可能性を確認するため、以下の
実験を行った。The following experiment was conducted to confirm the possibility of developing a low thermal expansion linear body by compounding with a material having a negative linear expansion coefficient.
【００３５】実験は、銅板、負の線膨張係数を持つダイ
ニーマのプリプレグシート、および両者をエポキシ系接
着剤により張り合わせた材料について、温度変化による
線膨張を歪みゲージにより測定した。In the experiment, a linear expansion due to temperature change was measured by a strain gauge for a copper plate, a dynaima prepreg sheet having a negative linear expansion coefficient, and a material obtained by bonding the both with an epoxy adhesive.
【００３６】図３は各種の熱膨張体の熱膨張をみるため
のサンプルを示す図である。FIG. 3 is a diagram showing samples for observing the thermal expansion of various thermal expansion bodies.
【００３７】（１）サンプル
（ａ）図３（ａ）に示すように、銅板（０．３ｍｍ厚）
のサンプル２１
（ｂ）図３（ｂ）に示すように、ダイニーマのＵＤ（一
方向）プリプレグ（繊維と樹脂からなる）のサンプル３
１
（ｃ）図３（ｃ）に示すように、銅板４１にダイニーマ
４２を貼り付けた複合部材のサンプル４０
（ｄ）図３（ｄ）に示すように、ダイニーマ５１−銅板
５２−ダイニーマ５３の複合部材のサンプル５０
（ｅ）図３（ｅ）に示すように、銅板６１−ダイニーマ
（５枚）６２−銅板６３の複合部材のサンプル６０
なお、各サンプルとも、５０×２０ｍｍであり、また、
２２，３２，４３，５４，６４はそれぞれ測定用の歪み
ゲージである。(1) Sample (a) As shown in FIG. 3 (a), a copper plate (thickness: 0.3 mm)
Sample 21 of (b) As shown in FIG. 3 (b), sample 3 of UD (unidirectional) prepreg (comprising fibers and resin) of Dyneema
1 (c) As shown in FIG. 3 (c), a sample 40 of a composite member in which a dyneema 42 is attached to a copper plate 41 (d) As shown in FIG. 3 (d), a dyneema 51-copper plate 52-dyneema 53 Sample 50 of composite member (e) As shown in FIG. 3 (e), sample 60 of composite member of copper plate 61-dyneema (5 sheets) 62-copper plate 63 Note that each sample has a size of 50 × 20 mm, and
Reference numerals 22, 32, 43, 54 and 64 are strain gauges for measurement.
【００３８】（２）測定方法
歪みゲージ：歪みゲージ（適合線膨張係数：ＳＵＳ鋼
用）
３枚／サンプル
温度変化：室温（２５℃程度）から８０℃まで、３回の
測定
（３）測定結果
各サンプルについて、３回目の温度変化時の線膨張を、
歪みゲージの見かけ歪みによる影響を除去し、３０℃を
基準にして、図４から図８に示した。すなわち、図４は
サンプル２１〔図３（ａ）〕の熱膨張特性図、図５はサ
ンプル３１〔図３（ｂ）〕の熱膨張特性図、図６はサン
プル４０〔図３（ｃ）〕の熱膨張特性図、図７はサンプ
ル５０〔図３（ｄ）〕の熱膨張特性図、図８はサンプル
６０〔図３（ｅ）〕の熱膨張特性図である。なお、これ
らの図においては、＋が膨張、−が収縮となり、図４か
ら図８のシンボルは、３点測定したそれぞれの歪みゲー
ジ毎の測定結果を示している。それぞれの値は、３０℃
を基準（０）としたときの各温度までの歪み＝線膨張の
値である。図６の銅−ダイニーマのサンプルでは、銅面
とダイニーマ面にそれぞれに歪みゲージを張り付けて測
定したので、銅面とダイニーマ面の結果がある。図８の
ダイニーマを銅板で挟んだサンプルでは、両面に歪みゲ
ージを３枚ずつ貼り付けて測定したので、合計６点の測
定結果が得られる。(2) Measuring method Strain gauge: Strain gauge (Compatible linear expansion coefficient: for SUS steel) 3 sheets / Sample temperature change: 3 times measurement from room temperature (about 25 ° C) to 80 ° C (3) Measurement result For each sample, the linear expansion during the third temperature change,
The effect of the apparent strain of the strain gauge was removed, and the results are shown in FIGS. That is, FIG. 4 is a thermal expansion characteristic diagram of sample 21 [FIG. 3 (a)], FIG. 5 is a thermal expansion characteristic diagram of sample 31 [FIG. 3 (b)], and FIG. 6 is sample 40 [FIG. 3 (c)]. 7 is a thermal expansion characteristic diagram of Sample 50 [FIG. 3 (d)], and FIG. 8 is a thermal expansion characteristic diagram of Sample 60 [FIG. 3 (e)]. In these figures, + is expansion and − is contraction, and the symbols in FIGS. 4 to 8 show the measurement results for each strain gauge measured at three points. Each value is 30 ℃
Is the value of strain = linear expansion up to each temperature, where is the reference (0). In the copper-dyneema sample of FIG. 6, strain gauges were attached to the copper surface and the dyneema surface, respectively. Therefore, there are results for the copper surface and the dyneema surface. In the sample in which the Dyneema shown in FIG. 8 is sandwiched between copper plates, three strain gauges were attached on both sides for measurement, so that a total of 6 measurement results can be obtained.
【００３９】測定結果から、各サンプルの平均の線膨張
係数をまとめると表２のようになる。The average linear expansion coefficient of each sample is summarized in Table 2 from the measurement results.
【００４０】[0040]
【表２】 [Table 2]
【００４１】図５に示すサンプル３１のダイニーマで
は、線膨張係数が０から負を示している。銅板４１とダ
イニーマ４２を貼り付けた、図６に示すサンプル４０で
は銅板の面とダイニーマの面で線膨張係数に大きな差が
あり、バイメタル的な特性を示し、銅部分の線膨張係数
が単体の場合（図４参照）より大きくなっている。銅板
６１，６３でダイニーマ５枚６２を挟んだ、図８に示す
サンプル６０では、銅板の線膨張係数が１３．１と、図
４に示すサンプル２１の銅板単体に比べて７８％に減少
しており、銅板とダイニーマとの複合化により低熱膨張
材料を得ることができることが分かる。実験は一例であ
り、割合や複合方法により調整できる。In the dyneema of sample 31 shown in FIG. 5, the linear expansion coefficient is 0 to negative. In the sample 40 shown in FIG. 6 in which the copper plate 41 and the dyneema 42 are attached, there is a large difference in the coefficient of linear expansion between the surface of the copper plate and the surface of the dyneema, exhibiting bimetallic characteristics, and the linear expansion coefficient of the copper portion It is larger than the case (see FIG. 4). In the sample 60 shown in FIG. 8 in which five dyneema 62 are sandwiched between the copper plates 61 and 63, the linear expansion coefficient of the copper plate is 13.1, which is reduced to 78% as compared with the single copper plate of the sample 21 shown in FIG. Therefore, it is understood that the low thermal expansion material can be obtained by combining the copper plate and the dyneema. The experiment is an example, and can be adjusted by the ratio or the composite method.
【００４２】上記したように、銅のトロリ線等の線状体
では、温度変化に伴う熱伸縮があるため、敷設や保守管
理において問題となる。そこで、極力線膨張係数の小さ
い材料の適用により低熱膨張の線状体の開発を行い、低
熱膨張線状体を得ることができた。As described above, a linear body such as a copper trolley wire causes thermal expansion and contraction due to temperature change, which causes a problem in laying and maintenance. Therefore, we have developed a linear body with low thermal expansion by applying a material with a linear expansion coefficient as low as possible, and obtained a linear body with low thermal expansion.
【００４３】なお、上記実施例では、低熱膨張線状体の
適用を主にトロリ線について述べたが、その他の給電線
やレールへの適用も可能である。In the above embodiment, the application of the low thermal expansion linear body was mainly described for the trolley wire, but the application to other power supply lines and rails is also possible.
【００４４】また、負の線膨張特性を持つ材料に代え
て、熱膨張係数の小さいインバー合金などを用いるよう
にすることもできる。Further, instead of a material having a negative linear expansion characteristic, an Invar alloy having a small coefficient of thermal expansion may be used.
【００４５】なお、本発明は上記実施例に限定されるも
のではなく、本発明の趣旨に基づいて種々の変形が可能
であり、それらを本発明の範囲から排除するものではな
い。The present invention is not limited to the above embodiments, and various modifications can be made based on the spirit of the present invention, and these modifications are not excluded from the scope of the present invention.
【００４６】[0046]
【発明の効果】以上、詳細に説明したように、トロリ線
等の線状体では、温度変化に伴う熱伸縮があるため、敷
設や保守管理において問題となるが、本発明によれば、
導電性材料と負の熱膨張係数の材料との複合構造の線状
体により、極力線膨張係数の小さい低熱膨張の線状体を
得ることができる。As described above in detail, a linear body such as a trolley wire causes thermal expansion and contraction due to temperature change, which causes a problem in laying and maintenance. However, according to the present invention,
A linear body having a composite structure of a conductive material and a material having a negative coefficient of thermal expansion makes it possible to obtain a linear body having a low coefficient of thermal expansion and low thermal expansion.
【００４７】従って、トロリ線の熱伸縮に伴う架線支持
部構造を簡素化することができた。Therefore, the structure of the overhead wire supporting portion associated with the thermal expansion and contraction of the trolley wire could be simplified.
【図１】本発明の実施例を示すトロリ線を架設した状態
を示す図である。FIG. 1 is a view showing a state in which a trolley wire according to an embodiment of the present invention is installed.
【図２】本発明にかかる低熱膨張線状体からなるトロリ
線の模式図である。FIG. 2 is a schematic view of a trolley wire made of a low thermal expansion linear body according to the present invention.
【図３】各種の熱膨張体の熱膨張をみるためのサンプル
を示す図である。FIG. 3 is a diagram showing samples for observing thermal expansion of various thermal expansion bodies.
【図４】サンプル〔図３（ａ）〕の熱膨張特性図であ
る。FIG. 4 is a thermal expansion characteristic diagram of a sample [FIG. 3 (a)].
【図５】サンプル〔図３（ｂ）〕の熱膨張特性図であ
る。FIG. 5 is a thermal expansion characteristic diagram of a sample [FIG. 3 (b)].
【図６】サンプル〔図３（ｃ）〕の熱膨張特性図であ
る。FIG. 6 is a thermal expansion characteristic diagram of the sample [FIG. 3 (c)].
【図７】サンプル〔図３（ｄ）〕の熱膨張特性図であ
る。FIG. 7 is a thermal expansion characteristic diagram of a sample [FIG. 3 (d)].
【図８】サンプル〔図３（ｅ）〕の熱膨張特性図であ
る。FIG. 8 is a thermal expansion characteristic diagram of a sample [FIG. 3 (e)].
【図９】従来のトロリ線を架設した状態を示す図であ
る。FIG. 9 is a view showing a state in which a conventional trolley wire is installed.
１，２ 支持体
３ 支持体間に架設される低熱膨張線状体からなるト
ロリ線
４ 簡易張力調整装置
１１ 低熱膨張線状体からなるトロリ線
１２ 銅、アルミニウム導体
１３ 負の線膨張係数を持つ有機材料
２１ 銅板（０．３ｍｍ厚）のサンプル
２２，３２，４３，５４，６４ 歪みゲージ
３１ ダイニーマのＵＤ（一方向）プリプレグのサン
プル
４０ 銅板とダイニーマを貼り付けた複合部材のサン
プル
４１，５２，６１，６３ 銅板
４２，５１，５３，６２ ダイニーマ
５０ ダイニーマ−銅板−ダイニーマの複合部材のサ
ンプル
６０ 銅板−ダイニーマ（５枚）−銅板の複合部材の
サンプル1, 2 support 3 trolley wire made of a low thermal expansion linear body installed between the supports 4 simple tension adjusting device 11 trolley wire 12 made of a low thermal expansion linear body 12 copper, aluminum conductor 13 having a negative linear expansion coefficient Organic material 21 Copper plate (0.3 mm thickness) samples 22, 32, 43, 54, 64 Strain gauge 31 Dyneema UD (one direction) prepreg sample 40 Composite member samples 41, 52 with copper plate and dyneema attached 61, 63 Copper plate 42, 51, 53, 62 Dyneema 50 Dyneema-Copper plate-Dyneema composite member sample 60 Copper plate-Dyneema (5 sheets) -Copper plate composite member sample
───────────────────────────────────────────────────── フロントページの続き (72)発明者 根津 一嘉 東京都国分寺市光町二丁目８番地38 財団 法人 鉄道総合技術研究所内 Ｆターム(参考） 5G309 AA11 5G311 AB01 AD03 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Kazuyoshi Nezu 38-8, Hikarimachi, Kokubunji, Tokyo 38 Foundation Corporate Railway Technical Research Institute F-term (reference) 5G309 AA11 5G311 AB01 AD03
Claims (4)
線膨張特性を持つ材料との複合構造からなる低熱膨張線
状体。1. A low thermal expansion linear body having a composite structure of a conductive material having a positive linear expansion characteristic and a material having a negative linear expansion characteristic.
て、前記材料が超高分子量ポリエチレン繊維であること
を特徴とする低熱膨張線状体。2. The low thermal expansion linear body according to claim 1, wherein the material is an ultrahigh molecular weight polyethylene fiber.
て、前記材料がポリパラフェニレンベンゾビスオキサゾ
ールを液晶紡糸した繊維であることを特徴とする低熱膨
張線状体。3. The low thermal expansion linear body according to claim 1, wherein the material is a liquid crystal spun fiber of polyparaphenylenebenzobisoxazole.
体がトロリ線であることを特徴とする低熱膨張線状体。4. The low thermal expansion linear body according to claim 1, 2 or 3, wherein the low thermal expansion linear body is a trolley wire.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002083665A JP4281891B2 (en) | 2002-03-25 | 2002-03-25 | Low thermal expansion trolley wire |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002083665A JP4281891B2 (en) | 2002-03-25 | 2002-03-25 | Low thermal expansion trolley wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003281942A true JP2003281942A (en) | 2003-10-03 |
| JP4281891B2 JP4281891B2 (en) | 2009-06-17 |
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|---|---|---|---|
| JP2002083665A Expired - Fee Related JP4281891B2 (en) | 2002-03-25 | 2002-03-25 | Low thermal expansion trolley wire |
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