公开(公告)号：EP3656977A1

公开(公告)日：2020-05-27

申请号：EP19218676.5

申请日：2013-09-16

申请人： Joy Global Underground Mining LLC

发明人： SMITH, Russell, P ,  HUNTER, Andrew, D ,  LUGG, Peter, A ,  SCHIRMER, Ian, B ,  KEECH, Geoffrey, W ,  COATES, Christopher ,  NEILSON, Bradley, M

IPC分类号： E21D9/10 ,  E21C27/16 ,  E21C31/02

摘要： A cutter head 22 includes a first member 90, a cutting bit 86, and a second member 94. The first member 90 includes a first end and a second end and includes a first mass. The cutting bit 86 is coupled to the first member 90 proximate the second end. The cutting bit 86 includes a cutting edge rotatable about the axis. The second member 94 is rotatable about the axis and includes a second mass eccentrically positioned with respect to the axis. Rotation of the second mass causes the first member 90 and the cutting bit 86 to oscillate.