Patent ID: 9458673
Filing Date: 2016-10-04
CPC Classification: B28D,E21B

Claim Text:
1. A hard-rock core barrel roller cutter assembly, comprises a roller cutter and a saddle, wherein the roller cutter includes a base portion for operating, a connecting portion integrated with the base portion and detachably connected to the saddle; the connecting portion has a butted oblique plane at its one side; width of the connecting portion is gradually increased from one end adjacent to the base portion to another end far away from the base portion; a fixing block is detachably connected to the saddle; the fixing block has, at its one side, a pressure slope which matches with the butted oblique plane; width of the fixing block is gradually decreased from one end adjacent to the base portion to another end far away from the base portion; the connecting portion and the fixing block are disposed within the saddle and then are held in place; wherein the saddle is cannular with opennings at two ends thereof; a fixing plate is arranged at one end of the saddle far away from the base portion, the connecting portion and the fixing block are connected to the fixing plate through a fastening bolt respectively; an outer end of each fastening bolt is screwed with two nuts, and the fixing plate has, at its periphery, a stopper portion which is stopped by an end of the saddle and restricts the fixing plate to move towards the base portion.