| 摘要 |
FIELD: mining. ^ SUBSTANCE: in method and device for removing blockage of drilling bit during drilling process, namely during percussion or percussion-rotary drilling in the material of soil or rock, at that, by means of drilling bit located on drilling rod and brought by means of drilling rod into rotary movement, and if necessary into impact movement and connected to it, there formed is bore well. When the drilling bit is blocked, which prevents further drilling process, and namely further rotary movement of drilling bit, the drilling bit by means of drilling rod is brought into linear movement opposite to the drilling direction and by means of the appropriate connection between the end of drilling rod, which faces the drilling bit, and the drilling bit, and irrespective of rotation drive for performing the drilling process it is brought into rotary movement in the direction opposite to the rotation direction during the drilling process. ^ EFFECT: reducing additional consumption of time, resources and materials. ^ 12 cl, 7 dwg |
