对MG250/300-NWD型电牵引短壁采煤机，在大同进行工业性试验期间出现装煤效果差的原因进行分析，并提出改进建议。
The paper analyses poor loading effects of MG250/300-NWD electric-driven short-wall shearer during its testing period in Datong and puts forward the recommendations of improvement.
分析介绍了滚筒装煤、最大采煤高度、薄煤层输送机、薄煤层对采煤机的要求等问题。
This paper discusses coal cutting drum, coal loading, maximum coal cutting height, low coal seam conveyor and how the low coal seams restrict the use of coal shearers.
环式卸煤机犁煤盘、卸煤盘的拼装制作工作台，属于机械零部件加工的工 装。
The utility model provides a ring-type workbench for assembling and manufacturing a coal plough disc or a coal unloading disc of a coal unloader, and belongs to tooling for processing machine parts.
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