bogie

Japanese: bogie
bogie

…Early railroad cars used fixed-axle vehicles, with the wheelsets attached directly to the car body via springs. However, because the length of the car body of a four-wheeled car with two fixed axles is limited in terms of curve-passing and running performance, when it became necessary to make the car larger, a car (bogie car) was created that used two sets of bogies that had rotational freedom relative to the car body. In addition, to improve running stability even with two-axle cars with a short car body length, a structure that allows a certain degree of relative movement (forward/backward and left/right) between the wheelsets and the car body has been adopted (sometimes called a single-axle bogie). …

*Some of the terminology that mentions "bogie" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…初期の鉄道車両には,車体にばねを介して輪軸を直接取り付けた固定軸車両が用いられた。しかし,2軸固定式の四輪車では曲線通過性能と走行性能の面から車体長に限界があるため,車両の大型化が必要となると,車体に対して回転の自由度をもたせた台車(ボギーbogie台車)を2組用いた車両(ボギー車)が生まれた。また車体長の短い2軸車でも走行安定性を向上させるため,輪軸と車体の間にはある程度の相対運動(前後,左右方向)が可能な構造が採られるようになってきている(これを1軸台車と呼ぶことがある)。…

※「bogie」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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