FIELD: mining.
SUBSTANCE: drilling rock bit comprises legs with inclined journals, where mills are installed, the rear part of which is reinforced with rock-breaking teeth, besides, mills are fixed by means of lock and stop elements, serially installed in radial channels of the mill, combined with circular grooves of journals. Stop elements are made with slots on the side surface, where tails of rock-breaking teeth are installed, being fixed on the rear part of the mills.
EFFECT: increased resource of bit operation, reliable fixation of mills.
2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| DRILLING BIT | 2012 |
|
RU2496963C1 |
| DRILL BIT AND METHOD OF ITS ASSEMBLY | 2012 |
|
RU2493349C1 |
| ROTARY DRILLING BIT (VERSIONS) | 2012 |
|
RU2494216C1 |
| BORING ROLLING CUTTER BIT | 2008 |
|
RU2364699C1 |
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|
RU2347058C1 |
| ROLLING CUTTER DRILLING BIT | 2005 |
|
RU2291270C1 |
| SUPPORT OF CONE BIT | 2007 |
|
RU2351740C1 |
| SUPPORT OF CONE-ROCK BIT AND MOUNTING METHODS (OPTIONS) | 2006 |
|
RU2327849C1 |
| ROCK-DRILLING BIT | 2012 |
|
RU2509198C1 |
| ROLLING BORING BIT | 2012 |
|
RU2514021C1 |
