FIELD: mining.
SUBSTANCE: group of inventions relates to hybrid drill bits for drilling underground rocks. Bit for underground rocks drilling includes housing; at least one fixed blade, connected to housing and holding at least one cutting element; one or more tabs, each of which holds cutter with possibility of rotation, having at least one cutting element, wherein drill bit body has slot, which has first and second side walls, third wall connecting side walls, and made with possibility of tab mounting part installation into it with sidewall made with possibility to be adjoined to slot first side wall; key arranged between tab installation part and slot wall; wedge having lateral side inclined at an obtuse angle and made with possibility of arrangement between tab side wall inclined at an acute angle and slot second side wall, thus fixing tab inside the slot; and several fasteners attaching tab and wedge to bit housing.
EFFECT: technical result consists in simplification of bit assembly and repair while maintaining its strength.
13 cl, 8 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| DRILLING BITS WITH ANTI-TRECKING PROPERTIES | 2011 |
|
RU2598388C2 |
| HYBRID DRILL BIT WITH HIGH RATIO BETWEEN DIAMETERS OF GUIDE STUD AND JOURNAL | 2009 |
|
RU2541414C2 |
| HYBRID DRILL BIT | 2010 |
|
RU2564320C2 |
| DRILLING ROLLER BIT (VARIANTS) | 2003 |
|
RU2257457C1 |
| DRILLING SYSTEMS AND HYBRID DRILL BITS FOR DRILLING IN SUBTERRANEAN FORMATION AND METHODS RELATING THERETO | 2014 |
|
RU2669623C1 |
| DYNAMICALLY STABLE HYBRID DRILL BIT | 2009 |
|
RU2536914C2 |
| DRILLING BIT WITH CALIBRATING-AND-STABILIZING MEANS | 2005 |
|
RU2294424C2 |
| DRILL BIT | 2000 |
|
RU2179619C2 |
| CHISEL WITH CONICAL CUTTERS, WHICH HAS OIL SEAL FOR COMPLETE FIXATION OF SEAL | 2017 |
|
RU2754252C2 |
| HYBRID DRILLING BIT WITH HIGH SIDE FRONT INCLINATION ANGLE OF AUXILIARY BACKUP CUTTERS | 2009 |
|
RU2531720C2 |
