FIELD: mining engineering.
SUBSTANCE: telescopic drill string comprises the outer and the inner rod, made with the ability of longitudinal displacement relative to each other, having the connecting elements for fixing respectively to the movable rotator of the machine and the rock-destruction tool, the interlock to transmit torque and axial force between the outer and the inner rod, made in the form of at least two curved grooves located on the inner rod, and a rest with an inner projection bonded to the outer rod. The rest is placed in the upper part of the outer rod. The connecting element for fastening to the rock-destruction tool is located on the lower end of the outer rod. The connecting element for fastening the telescopic boom to the movable rotator of the machine is placed in the upper part of the inner rod.
EFFECT: simplification of manufacturing of the structure while simultaneous simplification of production of auxiliary operations.
12 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| RIG FOR ROTARY DRILLING WITH REFLUSHING | 0 |
|
SU1105593A1 |
| CASING REAMER BIT | 2022 |
|
RU2779682C1 |
| MECHANICAL JAR | 2011 |
|
RU2482260C1 |
| DEVICE FOR CONNECTION OF DRILL PIPES | 1996 |
|
RU2114977C1 |
| AUGER FLIGHT LOCKING ASSEMBLY | 2017 |
|
RU2649991C1 |
| METHOD FOR INSTALLING GEOTHERMAL HEAT EXCHANGERS FOR LOW-GRADE HEAT EXTRACTION | 2017 |
|
RU2641439C9 |
| SEMI-LOCK FOR TRANSFER OF TORQUE FROM ROTARY HEAD OF DRILLING UNIT TO HOLLOW SCREW COLUMN | 2014 |
|
RU2544925C1 |
| PROCEDURE FOR CONSTRUCTION OF HORIZONTAL DRAIN HOLE IN UNSTABLE MOVEABLE ROCK AND DRILLING ASSEMBLY FOR ITS IMPLEMENTATION | 2010 |
|
RU2435925C1 |
| 0 |
|
SU307175A1 | |
| 0 |
|
SU1782265A3 |
