公开(公告)号：EP4421288A2

公开(公告)日：2024-08-28

申请号：EP24188575.5

申请日：2017-05-26

申请人： Joy Global Underground Mining LLC

发明人： De Sousa, Joaquim Antonio Soares ,  Laing, Michael

IPC分类号： E21C25/18

CPC分类号： E21C27/02 ,  E02F9/2866 ,  E02F5/18 ,  E21C25/18

摘要： A cutting device for engaging a rock face, a cutting head and a method of servicing a cutting device for a mining machine are disclosed. The cutting device may include a plurality of cutting portions supported on a disc body, each cutting portion including a plurality of cutting bits positioned along a peripheral edge. The method e.g. comprises: uncoupling one of the cutting portions from the disc body; and securing a replacement cutting portion to the disc body in a position previously occupied by the one cutting portion such that the replacement cutting portion is secured against movement relative to the disc body, the replacement cutting portion engaging a planar surface of the disc body that is oriented at an oblique angle with respect to an axis of rotation of the disc body.