| 发明名称 |
METHOD AND APPARATUS FOR OPENING THREADED JOINTS OF DRILLING EQUIPMENT |
| 摘要 |
The invention relates to a method and apparatus for opening threaded joints of drilling equipment (6) by striking the drilling equipment (6) with the percussion device of a rock drilling rig (1) and by measuring vibration originating from the drilling equipment (6) during striking. In addition to vibration, measuring means (9) measure a parameter defining at least one additional condition, on the basis of which the decision to stop striking is made. |
| 申请公布号 |
US2013048378(A1) |
申请公布日期 |
2013.02.28 |
| 申请号 |
US201113695922 |
申请日期 |
2011.05.03 |
| 申请人 |
PIRINEN TUOMO;UITTO VESA;HUIKKOLA MIIKA;MANTTARI MAUNU;HANSKI SAMI;AHONEN ISTO;SANDVIK MINING AND CONSTRUCTION OY |
发明人 |
PIRINEN TUOMO;UITTO VESA;HUIKKOLA MIIKA;MANTTARI MAUNU;HANSKI SAMI;AHONEN ISTO |
| 分类号 |
E21B47/00;E21B44/00 |
主分类号 |
E21B47/00 |
| 代理机构 |
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