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7LS06、7LS6C 和7LS07型采煤机是神华集团神东煤炭分公司2005年以后从美国久益(JOY)公司引进的目前世界装机功率最大、最先进的交流电牵引采煤机。以7LS07型为例:总装机功率为2 330 kW,截割功率为2台860kW 的电动机,截割高度最高可达6.3 m(使用φ3.2 m 滚筒时),生产能力可达5 000 t/h。采煤机在井下工作中一旦出现机械故障,维修相当困难,尤其是采煤机的2个截割摇臂减速器出现故障
The 7LS06, 7LS6C and 7LS07 coal shearer are the largest and most advanced AC traction shearer imported from JOY company in the world since Shen Dong Coal Branch of Shenhua Group in 2005. Taking the Model 7LS07 as an example, a motor with a total installed power of 2 330 kW and a cutting power of 2 units of 860 kW has a cutting height of up to 6.3 m (with φ3.2 m rollers) and a production capacity of up to 5,000 t / h Shearer in the downhole work in the event of mechanical failure, maintenance is quite difficult, especially Shearer 2 cutting arm reducer failure