本文对局管内运用列车连续发生8起C_(50)型敞车中梁裂纹故障,严重危及行车安全的情况;局管内货车段修中C_(50)型敞车发现中梁裂纹的情况;以及段内施修的和提前返厂的C_(50)型敞车的情况做了分析。为防止发生中梁折断事故,保证运输安全,对C_(50)型敞车使用及检修提出几点建议。望有关领导部门迅速采取措施。 In this paper, 8 cases of C 50 cracked in the middle of the G50 train were seriously damaged and the traffic safety was severely endangered. The crack of the middle girder was found in the C 50 car of Xiuzhong truck in the station. The repair and early return of the C_ (50) gondola was analyzed. In order to prevent accidental breakage of the middle girder and ensure the safety of transportation, some suggestions are put forward for the use and maintenance of C_ (50) Gondola. Hope that the relevant departments to take prompt steps.