电动机械取心钻具反扭装置实验台设计及实验

Anti-torque device with high torque is one of the main parts of the electromechanical coring tools of armored cable type for sub-glacial bedrock drilling, the failure of this device will cause the drilling process ceasing, even will lead to the drill falling off and other drilling accidents. The experimental stand of anti-torque device for armored cable assembly is designed; the paper introduces in detail the design concept, design principle, main structure parameters and the preliminary experimental results. This experimental stand can test the anti-torque of the anti-torque device in any combination with ice of different temperature and borehole of different diameter, and can show the sliding down resistance. The preliminary experiments verify that the experimental stand works well, and it can provide an important basis for the better selection of anti-torque device type and optimal operation parameters.

sub-glacial bedrock; anti-torque device; mechanical model; coring tool