Cutting Mechanism Rotor System Dynamic Characteristics of Cantilever Roadheader under Random Hard Rock Load

Abstract

Accurately mastering the power transmission characteristics of the cutting arm transmission shaft system is key to improving the reliability and working capacity of the cantilever roadheader. Based on the rigid–flexible coupling vibration characteristic modeling of the roadheader cutting arm, the vibration characteristics of different substructures in the transmission shaft system of the roadheader cutting arm were considered, the dynamic characteristic model was comprehensively constructed, and the numerical analysis was carried out with the parameters of the XTR260 tunnel hard rock roadheader to compare the vibration characteristics of the cutting head under different cutting conditions. The experiment was carried out by using an artificial concrete wall, and the measurement results verify the established dynamic model that lays the foundation for the dynamic design of a high-performance roadheader.

Research on the resistance of cutting mechanism of longitudinal roadheader

“…H. Ergin et al 3 developed a new computer program to analyze the stability state of longitudinal roadheader. Based on the rigid-flexible coupling vibration characteristic of the roadheader cutting arm, Zhang et al 4 built a dynamic characteristic model by considering the vibration characteristics of different substructures in the drive shaft system of the cutting arm. Liu et al 5 Designed the three-dimensional model of the cutting head with pro/e software, and conducted static simulation with workbench software to obtain the stress information of key parts.…”