E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 19/18 (2006.01) E21B 19/20 (2006.01)
Patent
CA 2667876
A device for automatic changing of a drill bit (2) on a drill rod (5) for a drilling machine (4) which is supported by a feeder (3), which device comprises a bracket (6) for fastening to a forward portion of the feeder (3) and, attached to the bracket, a magazine (10) for drill bits (2), and a separate basket (9) for gathering up replaced drill bits (2) and comprises also a clamping means (14) for firmly clamping the drill rod (5) during a change of drill bit (2), whereby the device is pivoted upwards in front of a worn drill bit (2), which is unscrewed and gathered up in the basket (9), after which another drill bit from the magazine is screwed onto the drill rod.
La présente invention concerne un dispositif pour changer automatiquement un foret (2) sur une tige à foret (5) pour une foreuse (4) qui est supporté par un organe d'alimentation (3), lequel dispositif comprend un support (6) destiné à être fixé à une partie avant de l'organe d'alimentation (3) et, fixé au support, un magasin (10) pour forets (2), et un panier séparé (9) pour collecter les forets remplacés (2) et comprend également un moyen de serrage (14) pour serrer fermement la tige à foret (5) au cours d'un changement de foret (2), moyennant quoi le dispositif pivote vers le haut devant un foret usé (2), qui est dévissé et collecté dans le panier (9), après quoi un autre foret à partir du magasin est vissé sur la tige à foret.
Andren Mats
Jonsson Hans
Atlas Copco Rock Drills Ab
Fetherstonhaugh & Co.
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