FIELD: mining.
SUBSTANCE: anchor bolt includes the first and the second ends, shaft passing between ends and anchor device located along the first part of shaft near the first end. Anchor device has mandrel and expanding element. Expanding element overlaps the mandrel and is capable of being offset radially outwards at the pre-determined relative movement between the mandrel and other expanding element. Expanding element is connected to connector for formation of anchor assembly fixed on the mandrel and containing power-actuated device of relative rotation, which is active during rotation of anchor device.
EFFECT: improving the anchor fastening in bore pits.
25 cl, 10 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| SELF-DRILLING ANCHOR BOLT AND ANCHOR DEVICE FOR IT | 2007 |
|
RU2454543C2 |
| ANCHOR BOLT WITH MECHANICAL ANCHOR | 2008 |
|
RU2470158C2 |
| ANCHOR BOLT | 2004 |
|
RU2343287C2 |
| SELF-TAPPING ANCHOR BOLT | 2006 |
|
RU2404364C2 |
| HOLLOW ANCHOR BOLT, SELF-DRILLING ANCHOR BOLT AND METHOD TO SHAPE HOLLOW ANCHOR BOLT | 2008 |
|
RU2458226C2 |
| SPIRAL BLADE BIT, CONTAINING THIS BIT SYSTEM FOR ROCK CASING, METHOD FOR CUTTING SPIRAL GROOVE IN INTERNAL SURFACE OF GUIDE BOREHOLE AND METHOD OF GUIDE BOREHOLE REAMING BY MEANS OF SAID BIT, SYSTEM FOR CASING ROCK WITH ANCHOR BOLT | 2004 |
|
RU2362879C2 |
| TURBINE DRIVE OF THE SHOE-BIT FOR DRILLING A COMPLICATED SECTION OF THE WELL | 2022 |
|
RU2781653C1 |
| CASING PIPE LOWERING TOOL, ANCHORING SYSTEMS AND METHODS | 2017 |
|
RU2745315C2 |
| DRILL ROD WITH THE LOCKING COUNTERACTION FOR THE COAL MINE ROADWAY FLOOR ANCHORING | 2014 |
|
RU2662831C2 |
| METHOD OF PRODUCING ANCHOR ROD REINFORCED BY FIBER | 2008 |
|
RU2486059C2 |
