论文部分内容阅读
1 问题提出1987年—1990年,我国从前东德先后进口了920辆B22型机械冷藏车,而该车型的制动机与我国普通货车混编运行时,因设计性能不相适应,造成其轮对踏面擦伤现象时有发生。据不完全统计,配属丰台机保段的300辆B22型机冷车在1990年—1993年间,先后发生踏面擦伤故障78次,更换
1 PROBLEM PROBLEMS From 1987 to 1990, China imported 920 B22 mechanical refrigerated trucks from the former East Germany. When the brake motor of this model was mixed with the ordinary truck in our country, its round of design was not compatible Scratch the phenomenon of the tread from time to time. According to incomplete statistics, the 300 B22-type cold-type vehicles belonging to the Fengtai section of the Fengtai Group suffered a tread galling failure of 78 times between 1990 and 1993,