FIELD: mining.
SUBSTANCE: cutter attachment point includes cams and split sleeve with annular cavity on outer surface and cones on ends, the sleeve is installed in joined grooves of cam and cutter liner. Cutter attachment point is provided with restrainer in a form of a bar installed in cavity of split sleeve and fixed rigidly with it, at that in initial position outer diameter of split sleeve is less than diameter of groove formed by joining of grooves on inner surface of cam channel and side surface of liner, and inner diameter is less than outer diameter of restrainer. Groove in cam for split sleeve is of a stepped configuration.
EFFECT: reducing time required for cutter replacement.
2 cl, 2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| FLUSHING UNIT FOR DRILLING BIT (VARIANTS) | 2005 |
|
RU2279529C1 |
| DRILL TOOL (VERSIONS) | 2010 |
|
RU2415249C1 |
| ROCK-DESTROYING DRILLING TOOL | 2009 |
|
RU2392413C1 |
| DRILLING TOOLS | 2015 |
|
RU2581171C1 |
| DETACHABLE JOINT OF DRILLING TOOL | 2011 |
|
RU2468180C1 |
| FLUSHING ASSEMBLY OF DRILLING UNIT (OPTIONS) | 2017 |
|
RU2663516C1 |
| FLUSHING ASSEMBLY OF DRILLING UNIT (OPTIONS) | 2017 |
|
RU2663511C1 |
| FLUSHING ASSEMBLY OF THE DRILLING UNIT (OPTIONS) | 2017 |
|
RU2663520C1 |
| FLUSHING ASSEMBLY OF THE DRILLING UNIT (OPTIONS) | 2017 |
|
RU2658959C1 |
| FLUSHING ASSEMBLY OF THE DRILLING UNIT (OPTIONS) | 2017 |
|
RU2658960C1 |
