机车轴折断后的维修是大多数中小矿井都很，棘手的一件事，因轴与我的装配是过盈配合，难以完整无损地拆卸分解并保持精度。所以，遇到断轴大都是整体报废更换全套轮、轴。据悉，各矿都有多少不等的废弃轴轮难以利用其浪费可观。我校实习工厂经科研攻关较好地解决了这个难题， Broken locomotive shaft repair is most of the small and medium-sized mine are very tricky thing, because the shaft and my assembly is interference fit, it is difficult to disassemble and maintain integrity intact and maintain accuracy. Therefore, most of the broken shaft is scrapped to replace the entire set of round, shaft. It is reported that the mine has a number of unequal discarded axles difficult to use its considerable waste. My school internship plant by the scientific research to solve this problem,