FIELD: mining.
SUBSTANCE: invention relates to mining, specifically cone drill bits for drilling large diameter holes under piles of rocks develop. Rolling cutter drill bit includes a body with a through axial axis of channel, in a housing mounted on bearings, a cover, a variable volume chamber with a piston communicating with interior of cone. Central axis of hole, opposing each other, two pistons mounted connected tension spring, and in middle part of axis, to communicate with central axis of hole interior of cone, it is designed as at least one radial channel.
EFFECT: technical result is to increase service life of cutter while reducing complexity of manufacturing.
3 cl, 2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| DRILL BIT ROLLER CUTTER | 2015 |
|
RU2612171C1 |
| DRILL BIT ROLLER CUTTER | 2015 |
|
RU2612172C1 |
| DRILLING BIT ROLLING CUTTER | 2015 |
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| WELL REAMER | 1993 |
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| SUPPORT FOR CUTTER DRILL BIT | 2007 |
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| DRILLING BIT WITH SYSTEM OF LUBRICANT CONSUMPTION COMPENSATION IN ROLLER CUTTER SUPPORTS | 2010 |
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| ROLLING-CUTTER DRILLING BIT | 2001 |
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| CONE DRILL BIT | 1985 |
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| BOX-TYPE ROLLING DRILLING BIT | 2009 |
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RU2433243C2 |
