FIELD: construction.
SUBSTANCE: invention relates to rock-breaking tool, namely to drilling cone rock bits, mostly of low diametre. Drilling triple cone rock bit includes legs with inclined journals and cutters installed on them by means of locking bearing with additional top cones, on which one hard-alloy tooth is fixed. Distance s1 from point of crossing of axis of teeth in collar close to top tooth, with generatrix of the main cone of body till axis of bit is identified through mathematical formula.
EFFECT: reduced energy intensity of rock breaking due to elimination of rack in bottomhole, which in its turn results in improved drilling and mechanical speed of drilling.
2 cl, 2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| THREE-CONE ROLLING DRILLING BIT | 2009 |
|
RU2391484C1 |
| DRILLING THREE-ROLLER BIT | 2009 |
|
RU2387786C1 |
| DRILLING CONE ROCK BIT | 2009 |
|
RU2390616C1 |
| DRILLING ROLLER BIT | 2009 |
|
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| BIT FOR REACTIVE TURBODRILLING | 2016 |
|
RU2620108C1 |
| DRILLING CONE BIT WITH CENTRAL FLUSH | 2009 |
|
RU2394145C1 |
| ROCK DRILL BIT | 2014 |
|
RU2543824C1 |
| DRILLING ROCK BIT | 2011 |
|
RU2473770C1 |
| ROCK DRILL BIT | 2014 |
|
RU2543760C1 |
| BIT FOR JET-TURBINE DRILLING | 2015 |
|
RU2579087C1 |
