论文部分内容阅读
提高滚筒式采煤机功率和性能的措施１前言自１９８０年以来，采用长壁开采法开采的煤炭产量已经翻了两番，平均年增长率为１３％。这是由于对采煤设备进行了技术改造以后，使得它们的功率、强度和生产能力都有所提高的缘故。滚筒式采煤机结构上的改进旨在提高其生产能力和...
MEASURES TO ENHANCE POWER AND PERFORMANCE OF TAPE Shearer 1 INTRODUCTION Coal production using longwall mining has tripled since 1980, with an average annual growth rate of 13%. This is due to improvements in the power, strength and productivity of coal mining equipment after they have been retrofitted. The structural improvement of the drum shearer aims to increase its production capacity and ...