FIELD: mining.
SUBSTANCE: demountable roller cutter drilling tool contains a housing to which legs with demountable rolling cutters on replaceable bearings capable together stand the radial and multidirectional axial loading by stopped fixing assemblies are fastened in detachable manner. The housing is elongated towards a face and for formation of the advancing well with smaller diameter is fitted on the end with rock cutting elements or the device for their attaching. The fixing unit of each rolling cutter is located from the top of its cone and designed as a boss on the housing elongated towards a face. The boss is supported by the internal ring of the bearing capable to stand the axial loading facing from the of rolling cutter top.
EFFECT: increase in durability and durability of removable rolling cutter and their support by shifting of rolling cutter fixing unit towards the least loaded zone.
1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| ROLLER CUTTER DRILLING TOOL | 2015 |
|
RU2592911C1 |
| DEMOUNTABLE ROCK DRILL WITH CONE ROLLERS ON BALL BEARINGS WITH CAGES | 2006 |
|
RU2333341C2 |
| DEMOUNTABLE DRILLING BIT | 2014 |
|
RU2549336C1 |
| DEMOUNTABLE CONE BIT WITH SUPPORTS OF ROLLER CUTTERS ON ROLLER BEARINGS WITH SEPARATORS AND WITH SHORTENED DEMOUNTABLE SECTIONS OF LEGS BY GRIBENNIKOV-MALINKIN | 2006 |
|
RU2347883C2 |
| DRILLING TOOLS | 2017 |
|
RU2655505C1 |
| BIT GREBENNIKOV-MALINKIN-USHAKOVA'S CONE CUTTER | 2006 |
|
RU2334075C2 |
| ROCK DRILLING BIT BY MALINKIN-GRIBENNIKOV | 2006 |
|
RU2325502C2 |
| DISMOUNTABLE WHEEL-TYPE DRILLING BIT WITH SHORTENED SECTIONS OF ARMS | 2007 |
|
RU2369717C2 |
| DRILLING ROCK BIT | 2011 |
|
RU2473770C1 |
| ROLLING DRILLING BIT | 2010 |
|
RU2451151C1 |
