公开(公告)号：US20180171793A1

公开(公告)日：2018-06-21

申请号：US15738229

申请日：2015-06-22

Applicant: SANDVIK INTELLECTUAL PROPERTY AB

Inventor： Bernhard EBNER

IPC: E21C25/16

CPC classification number: E21C25/16 ,  E21B10/22 ,  E21D9/1013 ,  E21D9/11

Abstract: The present disclosure relates to a cutter assembly for an undercutting machine for cutting a rock workface and a method of disassembling a cutter assembly. The cutter assembly includes a shaft supporting structure, a shaft at least partly arranged within the shaft supporting structure, a cutter device arranged on the shaft or the shaft supporting structure, a first rolling element arranged between the shaft supporting structure and the shaft in a floating or slidable manner in an axial direction, and a second rolling element arranged between the shaft supporting structure and the shaft. A line orthogonal to an outer surface of the second rolling element crosses the longitudinal axis of the shaft at a center plane of the first rolling element or within a range of +/−25% of an axial extension of the first rolling element from the center plane.

公开(公告)号：US20180306032A1

公开(公告)日：2018-10-25

申请号：US15737996

申请日：2015-06-22

Applicant: SANDVIK INTELLECTUAL PROPERTY AB

Inventor： Bernhard EBNER ,  Christoph HABERER

IPC: E21C27/24 ,  E21C25/16 ,  E21C27/12 ,  E21D9/11

CPC classification number: E21C27/24 ,  E21C25/16 ,  E21C27/128 ,  E21D9/117

Abstract: A cutter assembly for an undercutting machine for cutting a rock workface and a method of assembling a cutter assembly is provided. The cutter assembly includes a shaft mountable on the machine with one end extending from the machine, and a cutter device arranged in connection to the extended end of the shaft. The cutter device is connected releasably and rotationally rigid to the shaft with a locking arrangement. The locking arrangement includes a first locking device arranged to transfer substantially axial loads, and a second locking device arranged to transfer substantially radial loads.