Arrangement in rock drill and method of controlling rock...

Details Arrangement in rock drill and method of controlling rock... Arrangement in rock drill and method of controlling rock...

B - Operations, Transporting

25

D

B25D 9/00 (2006.01) B25D 9/12 (2006.01) B25D 17/24 (2006.01) E21B 4/06 (2006.01) E21B 6/00 (2006.01) E21B 44/06 (2006.01)

Patent

CA 2285971

An arrangement in a rock drill comprising a shank (3) and a percussion piston (2) and lifting means for moving the shank (3) towards the percussion piston (2), and a method of controlling rock drilling. The arrangement comprises a lifting sleeve (7) around the shank (3) and a plurality of cylindrical lifting pistons (8a, 8b) around the shank (3). In the method, upon downward drilling, the magnitude of the feed force of the rock drill is decreased as the number of extension rods increases, and a force is set to act on some lifting pistons to move the shank (3) towards the percussion point.

L'invention concerne un agencement de perforatrice de roches comprenant une tige (3) et un piston à percussion (2), ainsi que des moyens de levage destinés à déplacer la tige (3) en direction du piston (2), et elle concerne également un procédé de commande de cette perforatrice. L'agencement comprend un manchon de levage (7) placé autour de la tige (3) ainsi qu'une pluralité de pistons de levage cylindriques (8a, 8b) également disposés autour de la tige (3). Dans le procédé de l'invention, lors du forage, l'amplitude de la force d'entraînement de la perforatrice diminue au fur et à mesure que le nombre de tiges d'extension augmente, et on règle une force qui doit agir sur quelques-uns des pistons de levage, aux fins de déplacement par ceux-ci de la tige (3) en direction du point de percussion.

Affiliated with

Also associated with

Rating

Arrangement in rock drill and method of controlling rock... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Arrangement in rock drill and method of controlling rock..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Arrangement in rock drill and method of controlling rock... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1795782