公开(公告)号：EP3329096A1

公开(公告)日：2018-06-06

申请号：EP16833646.9

申请日：2016-07-29

申请人： Joy MM Delaware, Inc. ,  Element Six (UK) Limited ,  Element Six GmbH

发明人： ARNOLD, Randy ,  FOLKERTS, James, E. ,  FREDERICK, John, R. ,  HALLBERG, John ,  KRELLNER, James ,  MEADE, David ,  TIRYAKI, Bulent ,  BONETTI, Serena ,  BUSH, Peter, Robert ,  PICKLES, Charles, Simon, James ,  WORT, Christopher, John, Howard ,  RIES, Bernd, Heinrich ,  SCHARTING, Markus, Kilian

IPC分类号： E21C35/193 ,  B28D1/18 ,  E21C35/18 ,  E21C35/19 ,  E21C35/197

CPC分类号： E21C35/1933 ,  B28D1/18 ,  B28D1/188 ,  E21C27/24

摘要： A cutting bit assembly for a mining machine includes a holder having a first surface, a second surface, and a bore extending therebetween, and a bit having a first end and a second end. The bit further includes a tip, a shank, and a shoulder positioned between the tip and the shank. The shank is positioned in the bore of the holder and defines a shank axis. The shoulder engages the first surface of the holder. The shank includes a projection adjacent the second end. The cutting bit assembly also includes a retainer having a groove and a resilient member. The groove engages a portion of the projection. The resilient portion engages the second surface of the holder and biases the retainer along the shank axis and away from the holder.