Method and apparatus for opening threaded joints of drilling equipment

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 vi...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: HANSKI SAMI, UITTO VESA, PIRINEN TUOMO, AHONEN ISTO, HUIKKOLA MIIKA, MANTTARI MAUNU
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung: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.