【摘要】 依据煤体中冲击应力波的传播规律理论 ,利用冲击动力学、弹塑性理论、岩石破碎学的知识 ,对冲击式采煤机的冲壁厚度、刀齿密度、冲击频率、刀齿强度等参数之间的函数关系 ,以及同煤炭本身物理力学性质之间的关系进行研究。为改进和推广现有冲击式采煤机提供了必要的理论依据。更多还原

【Abstract】 Depend on the mechanism of coal and rock breaking by impact,refer to the impact dynamics,the theory of elasticity and plasticity,the rock breaking study,we optimize the parameters of impact_mining machine,make out the reasonable function relationship of the split thickness of impact,the density of impact tools,the impact frequency,the strength of impact tools and the relationship between these parameters and the coal mass property.These researches will provide the necessary theory dependence for optimizing design and popular usage the impact_mining machine.更多还原