…It is said that the first grader was used in the United States in 1878, with a steel plate attached to the underside of a wooden wagon. The self-propelled tire-type grader with a diesel engine as we know it today appeared in 1931. There are two types: a towed type pulled by a tractor, and a self-propelled type called a motor grader. The power source for the working equipment can be mechanical or hydraulic. … *Some of the terminology that refers to "motor grader" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…1878年アメリカにおいて木製ワゴンの下側に鋼板を取り付けて使用されたのが最初といわれ,現在のようなディーゼルエンジンを有する自走タイヤ式グレーダーが出現したのは1931年である。トラクターによって牽引される被牽引式のものと,モーターグレーダーmotor graderと呼ぶ自走式の2種類がある。作業装置の動力としては,機械式のものと油圧式のものとがある。… ※「motor grader」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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