FIELD: mining.
SUBSTANCE: hand drill comprises a rod having a sharpened lower portion and provided with a handle in the upper portion, and a cutting unit which is above the sharpened portion and made of discs with sharpened rectilinear edges fixed on the rod in such a way that their planes form an angle them between. The rod has hollow tubular design with end incisions in the lower portion and a double hole in the upper portion for replaceable handle. The cutting unit is made in form of replaceable cone insert coaxial to sharpened portion of the rod, on cone part of which there are cutting units-disc formed to the outer side with equal pitch.
EFFECT: increase of labour productivity and convenience of use for hand drilling of wells, including holes deeper than the length of the rod.
1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| HAND DRILL | 2016 |
|
RU2636335C1 |
| HAND DRILL | 2018 |
|
RU2675262C1 |
| MANUAL REAMER FOR WELLS | 2012 |
|
RU2488680C1 |
| HAND DRILL FOR HOLE PERFORATION IN GROUND (VARIANTS) | 2004 |
|
RU2262579C1 |
| ROUND-LINK CHAIN | 2017 |
|
RU2679796C2 |
| DEVICE FROM THE LUGGAGE CROSSBEAMS STRUCTURE | 2017 |
|
RU2677937C2 |
| DEVICE FOR DRILLING WELLS IN LOOSE MINE ROCKS | 2009 |
|
RU2425206C1 |
| CIRCULAR ROLLER | 2017 |
|
RU2647251C1 |
| ICEBREAKER FORE END | 2014 |
|
RU2535588C1 |
| SOIL DRILL | 0 |
|
SU874905A1 |
