著者

会田 俊夫 石橋 重遠 佐進 進

出版者

一般社団法人 資源・素材学会

雑誌

日本鉱業会誌 (ISSN:03694194)

巻号頁・発行日

vol.78, no.887, pp.377-384, 1962-05-25 (Released:2011-07-13)

参考文献数

2

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In this paper we have studied the characteristics of the vibration of winding ropes in vertical shafts when the drums are braked in an emergency, measuring the vibration and analying the measured results by the theoretical methods published in our former paper.Some results we have obtained through our researches are as follows;1) The maximum vibration of a winding rope in a vertical shaft when the drum is braked in an emergency can safely be estimated to be 1.3 times as large as the maximum acceleration of the winding drum.2) The shock absorber is hardly effective for reducing the vibration of a winding rope in an emergency braking.3) We find that the length of a winding rope has nothing to do with its vibration in a shaft.

著者

会田 俊夫 藤尾 博重 高下 二郎

出版者

公益社団法人 精密工学会

雑誌

精密機械 (ISSN:03743543)

巻号頁・発行日

vol.31, no.360, pp.109-114, 1965-01-05 (Released:2010-02-16)

参考文献数

2

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Sintered metal is widely applied to mechanical parts and also to gears in special use. Bending strength and surface durability of sintered metal gears are, however, hardly discussed. Therefore, the authors carry out this test for the purpose of comparing bending strength and surface durability of sintered metal gears with those of hobbed carbon steel or cast iron gears.The test results make it clear that sintered metal gears have remarkably good characteristics on surface durability especially in the case of insufficient lubrication and its operating noise is smaller, although static and fatigue bending strength of sintered metal gears are lower than those of cast iron gears.