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采煤机装机容量和生产能力的不断增加要求可靠性也要相应提高。采煤机的生产使用实践表明,某些重要的零件如壳体,并不总是同时满足这些要求。采煤机经常发生壳体损坏,配合表面严重磨损的现象。(尤其是在壳体经早期变形处理的采煤机中)在复杂的井下工作条件下,由于减速器部件(特别是壳体)的故障而损坏采煤机将导致整个综采设备的长时期停工。此外,大量资金(达大修费的70％)消耗在备件上和传动件的
Increasing the installed capacity and production capacity of shearer requires a corresponding increase in reliability. The practice of shearer production practices shows that some important parts such as housings do not always meet these requirements at the same time. Shearer often happen shell damage, with the phenomenon of serious wear and tear on the surface. (Especially in shearer with early deformation of the casing) Damage to the shearer due to the failure of the reducer components, especially the casing, under complicated downhole operating conditions will result in the long period Shutdown. In addition, large sums of money (up to 70% of major repairs) are spent on spare parts and transmission parts