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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Pit head ： ウィキペディア英語版 Headframe A headframe (also known as a gallows frame,〔(【引用サイトリンク】 url=http://www.msha.gov/century/colliery/colliery.asp )〕 winding tower,〔 hoist frame,〔Ernst, Dr.-Ing. Richard (1989). ''Wörterbuch der Industriellen Technik'' (5th ed.). Wiesbaden: Oscar Brandstetter, 1989. ISBN 3-87097-145-2〕 pit frame,〔 shafthead frame,〔 headgear,〔 headstock or poppethead) is the structural frame above an underground mine shaft.〔 ==Design== Modern headframes are built out of steel, concrete or a combination of both. Timber headframes are no longer used in industrialized countries, but are still used in developing nations. Conventionally steel headframes are used when a drum hoist is employed, and concrete headframes are built for friction hoists; however a steel headframe can be used with a friction hoist for shafts with a smaller capacity and depth.〔 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「Headframe」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.