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由于煤岩材质的不均匀性及掘进机截割过程中往往会遇到其他的岩石成分,导致掘进机截割过程中截齿受到的载荷具有很大的不确定性,有必要对截齿工作过程中的强度可靠性进行研究。结合有限单元法、神经网络技术和可靠性理论,对截齿在极限载荷状态下的静强度可靠性及可靠性灵敏度进行分析,获得了截齿关键尺寸对截齿可靠度的影响大小排序,从而为截齿的可靠性设计提供指导。
Due to the heterogeneity of coal and rock material and other rock components often encountered in the cutting process of roadheader, there is great uncertainty in the load applied on the pick during the cutting of roadheader. It is necessary to work on the pick The strength and reliability of the process are studied. Based on the finite element method, neural network technology and reliability theory, the static strength reliability and reliability sensitivity of the picks under the ultimate load are analyzed. The influence of the key picks size on the reliability of the picks is obtained. Provide guidance for the reliability design of picks.