DEVICE FOR DRILLING

摘要

The device helps to lay drillings by the method "rock solidification". It has enhanced reliability at work. It consists of an actuating mechanism with a shaft, heads of crown rolls, eccentrically placed onto the shaft so that the mechanism may revolve, and spherical rings located between the foreheads of the rolls. Each roll's head is connected with the crown via spokes. The device is supplied with a screw spade, attached to the shaft and located in the bottom part of the internal hollow space between the crown and the head. The direction of revolution of the screw spade is opposite to the direction of revolution of the actuating mechanism.