HOLE MAKING ROBOT Russian patent published in 1995 - IPC

FIELD: mining; applicable in construction of cased slim holes. SUBSTANCE: hole making robot has drilling head in form of front and rear sections interconnected by means of controlled deflecting tool. Slip forms 5 is in form of outer and inner cylinders. Inner cylinder outer surface has spline 20 with channels 23 communicated with independent chambers 11 and 12 for cementing material components. Hoses 31 are rigidly connected with drilling head and feeding mechanism. Hoses are installed coaxial to channels 23 and communicated with them by means of union 27. In this case, quick-detachable connection is formed in axial direction. When necessity arises for replacement of tool, working member is withdrawn from forms 5, and unions 27 are withdrawn from channels 23 by means of feeding mechanism. Design of communication lines allows their multiple disconnection and subsequent joining for withdrawal of working member from blind hole. EFFECT: higher reliability of work in dense grounds in making curved holes. 9 dwg