8 m以上超大采高采煤机牵引力效分析

Analysis on Traction Force Effect of Super Large Mining Height Shearer above 8 m

针对8 m以上超大采高采煤机在特殊工况下易发生牵引过载的问题,通过建立采煤机力学模型,计算滑靴受力,分析了行走轮与销排啮合中心距增大的原因,以及啮合位置变化对牵引力效的影响。在理论分析的基础上,提出了超大采高采煤机提高牵引力输出的设计方法和配套原则,为后续超大采高综采装备的开发提供技术支撑。

Aiming at the problem of traction overload of shearer with super large mining height of more than 8 m under special working conditions,the mechanical model of shearer was established to calculate the force of sliding boots,and the reason for the increase of meshing center distance between walking wheel and pin row was analyzed,as well as the influence of meshing position on traction efficiency.On the basis of theoretical analysis,the design method and matching principle of super high mining height shearer to improve traction output were put forward,which could provide technical support for the subsequent development of fully mechanized mining equipment with super large mining height.