| 发明名称 |
Drill string component for noise control during percussion drilling |
| 摘要 |
Rock drilling equipment and drill string components (2;18) for top hammer drilling and down-the-hole drilling for positioning between a drill rig and a drill bit include a pipe-shaped element (3;19), which is arranged for transferring only rotational movements from the drill rig to the drill hit. A vibration-damping structure (12) is arranged adjoining to at least a part of an inside (11) of the pipe-shaped element in a space (41) formed inwardly of the inside (11). |
| 申请公布号 |
US9109397(B2) |
申请公布日期 |
2015.08.18 |
| 申请号 |
US201013261180 |
申请日期 |
2010.08.30 |
| 申请人 |
Atlas Copco Secoroc AB |
发明人 |
Carlsson Jimmy;Stenberg Göran;Beronius Alexander;Göthberg Mattias;Enblom Samuel |
| 分类号 |
E21B3/02;E21B1/00;E21B17/00;E21B17/07 |
主分类号 |
E21B3/02 |
| 代理机构 |
|
代理人 |
Stone Mark P. |
| 主权项 |
1. Drill string component for positioning between a top hammer drill rig and a drill bit for percussive drilling and including a pipe-shaped element which transfers rotational movements from the drill rig to the drill bit, and which is arranged to enclose at least one rod element of a drill string extending along a longitudinal axis for transferring impact pulses from a percussion drilling machine belonging to the top hammer drill rig to the drill bit, wherein the pipe-shaped element is arranged concentrically surrounding said at least one rod element, and wherein a vibration-damping structure is arranged adjoining to and rotatable with at least a part of an inside of the pipe-shaped element in a space formed inwardly of said inside for reducing emissions of noise from the drill string component when in operation and being outside a bore hole. |
| 地址 |
Fagersta SE |
