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根据铁道部车辆局要求，结合１０辆Ｃ＿（６３）型敞车段修的试修工作，在测定Ｍａｒｋ５０型缓冲器压吨曲线基础上，并结合Ｃ＿（６３）型敞车制造工艺以及对该车钩缓装置工作状态的分析，设计了一套钩缓拆卸装置及Ｍａｒｋ５０型缓冲器复位装置。经使用效果良好。
According to the requirements of the Ministry of Railways Vehicle Bureau, combined with 10 C_ (63) type open car repair repair work, measured Mark50 buffer tonnage curve based on the combination of C_ (63) gondola car manufacturing process and the car coupler Analysis of the working status of the device, designed a set of hook slow release device and Mark50 buffer reset device. By the use of good results.