mechanical model of the drill carriage with rotation and vibrating hammer for the new type taphole drill is established. the natural frequencies and mode shapes of the model are calculated.
建立了新型开铁口机电动鉆沖机构的力学模型,计算了它的固有频率和主振型。
the technology of lining by rail shuttering drill carriage is emphatically introduced, which has a definite reference value to the lining construction of the shallow buried, under…