FIELD: drilling of soil or rock.
SUBSTANCE: invention relates to drilling equipment, namely to the roller bits of a rock drilling type. Drilling bit comprises the body with the inclined trunnions, on which, by means of the locking element, the with annular boring and sealing assemblies arranged therein, each of which is formed by an elastic clamping ring and a package of rigid sealing rings. Lateral surfaces of rigid sealing rings in the plane, which is perpendicular to the axis of the trunnion, are barrel-shaped with convex and reciprocating concave surfaces.
EFFECT: technical result consists in improvement of drilling bit operation efficiency.
1 cl, 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| DRILL BIT | 2017 |
|
RU2658965C1 |
| DRILL BIT | 2017 |
|
RU2658958C1 |
| ROLLING CUTTER DRILLING BIT | 2005 |
|
RU2291270C1 |
| ROCK-DRILLING BIT | 2012 |
|
RU2509198C1 |
| SUPPORT OF ROLLING CUTTER DRILLING BIT | 2011 |
|
RU2452842C1 |
| SUPPORT FOR ROLLING CUTTER BIT | 2005 |
|
RU2287656C1 |
| SUPPORT OF CONE-ROCK BIT AND MOUNTING METHODS (OPTIONS) | 2006 |
|
RU2327849C1 |
| SEALED BEARING STRUCTURE OF DRILLING BIT | 2011 |
|
RU2465428C1 |
| ROLLER CUTTER DRILLING TOOL BEARING ASSEMBLY (VERSIONS) | 2008 |
|
RU2377382C1 |
| SUPPORT FOR ROLLING CUTTER BIT AND METHOD FOR MOUNTING THEREOF | 2005 |
|
RU2291273C1 |
