Hard-rock core barrel roller cutter assembly

摘要

The present invention provides a hard-rock core barrel roller cutter assembly, which comprises a roller cutter and a saddle. The roller cutter comprises a base portion for operating, and a connecting portion integrated with the base portion and detachably connected to the saddle. The connecting portion has a butted oblique plane, and a 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, and the fixing block has a pressure slope which matches with the butted oblique plane. A 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, and the saddle is muff-jointed out of the connecting portion and the fixing block. Comparing with the conventional technology, the roller cutter and the saddle of the present invention can be quickly assembled and detached, to improve the efficiency of the drilling operation. Simultaneously, the connecting strength thereof is high, and can satisfy the requirements of the drilling operation, and can be standardized.

主权项

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.