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一、前言 1977～1981年,轴承故障所造成的运转事故件数每年分别为14、11、10、16、11件,其中以1980年的16件为最高,而且目前尚无消灭的迹象。另外,由于需要修复有剥离故障的轮对,又没有多余轮对更换,以致减少了运用车辆数,因而影响了列车的正常运用。为了解决这个问题,组成研究小组对热轴故障和轮踏面剥离故障进行了调查。 24系客车,自1976年10月,在青森——大阪及青森——上野之间的广大地区反复运行。为了保证在降雪期的制动力,全年都使
I. Foreword From 1977 to 1981, the number of operational accidents caused by bearing failures was 14,11,10,16,11 each year, of which 16 were the highest in 1980 and there is no sign of elimination. In addition, due to the need to repair the wheel with peel failure, and no unnecessary wheel replacement, resulting in reduced the number of vehicles used, thus affecting the normal operation of the train. To solve this problem, a research team was formed to investigate the failure of the hot shaft and the failure of the tread surface. The 24 series passenger car has repeatedly operated in a large area between Aomori, Osaka and Aomori and Ueno since October 1976. In order to ensure the braking force during snowfall, all year round