| 翻訳と辞書 |
| JNR Class EF62 ： ウィキペディア英語版 |
JNR Class EF62
The is a Co-Co wheel arrangement DC electric locomotive type built between 1962 and 1969 for use hauling passenger and freight on the Shinetsu Main Line and particularly over the extreme 66.7‰ gradient of the Usui Pass between and . The prototype, EF62 1, was built by Kawasaki Sharyō in 1962, with the full-production locomotives built by Kawasaki, Tōshiba, and Tōyō & Kisha delivered from 1963 onward.
==Design==
The EF62s were the first adhesion locomotives used on the Shinetsu Main Line following the abandonment of the under-powered ED42 rack-and-pinion locos dating from the 1930s. They were designed to work in multiple with pairs of the specially-designed JNR Class EF63 "Sherpa" locomotives between Yokokawa and Karuizawa.
While high adhesion was clearly an important requirement, the locos had to be designed with a low axle load (16 t, compared to 18 t for the EF63s) allowing them to be used on other sections of the Shinetsu Main Line with stricter axle-load restrictions. The need to reduce overall weight was one reason behind the decision to use the unique Co-Co wheel arrangement rather than the more commonly used Bo-Bo-Bo arrangement.
The need to reduce unnecessary weight led to the EF62s being the first DC electric locomotives in Japan to include an electric generator (320 kW) for train heating rather than using a steam generator. The locos also made extensive use of FRP (fibreglass-reinforced plastic) for roof panels, again to reduce weight.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
■ウィキペディアで「JNR Class EF62」の詳細全文を読む
スポンサード リンク
| 翻訳と辞書 : 翻訳のためのインターネットリソース |
Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.
|
|