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国产B_(19)型机械保温车,从1979年下半年开始小批量投入运用。该型车安装的是13号车钩(下作用)。到目前为止,仅配属我段的B_(19)型车组(共107辆)就发生过两次由于车钩自动开锁而造成的列车自动分离事故。另外,段内调车作业也发生过车钩自动开锁的现象。经分析,是属于车钩防跳性能不良所致。以下对13号车钩(下作用)自动开锁的原因作一分析。
Domestic B_ (19) -type mechanical insulation car, starting from the second half of 1979 put into operation in small quantities. This model is mounted on the 13th coupler (the next role). So far, there have been two automatic train disconnections caused by the automatic unlocking of the coupler for the B19 (19), which belongs to me alone, of a total of 107 units. In addition, shunting operations have also occurred within the segment automatically unlock the phenomenon of the coupler. After analysis, it belongs to the hook anti-jump performance due to poor. The following on the 13th car hook (the role of) automatically unlock the reasons for an analysis.