Feed-extension cylinder arrangement in a feed beam for a...

Details Feed-extension cylinder arrangement in a feed beam for a... Feed-extension cylinder arrangement in a feed beam for a...

E - Fixed Constructions

21

B

E21B 7/02 (2006.01) E21B 19/086 (2006.01)

Patent

CA 2180536

A feed-extension cylinder arrangement in a feed beam for a rock drill, the feed beam comprising a lower beam (2) and an upper beam (1) positioned slideably on top of it. The cylinder pipe of a feed extension cylinder (6) between the lower beam (2) and the upper beam (1) is fixed in a chute-like space (2c) of the lower beam (2) to the lower surface of the upper beam (1) immovably with respect to it. The piston rod (7) of the feed-extension cylinder (6) is connected at its end to the rear end of the lower beam (2) movably in its transverse direction, so that the feed-extension cylinder (6) and the piston rod (7) are always protected against damage, being positioned between the upper beam (1) and the lower beam (2).

L'invention se rapporte à l'agencement d'un cylindre télescopique d'avance dans un longeron d'avance d'une perforatrice de roche, ce longeron d'avance comprenant un longeron inférieur (2) et un longeron supérieur (1) positionné coulissant sur la partie supérieure du longeron inférieur. Le tuyau d'un cylindre télescopique d'avance (6) se trouvant entre le longeron inférieur (2) et le longeron supérieur (1) est fixé dans un espace (2c) du longeron inférieur (2) analogue à un plan incliné, à la surface inférieure du longeron supérieur (1), ceci de manière inamovible par rapport à celle-ci. La tige (7) de piston du cylindre télescopique d'avance (6) est raccordée au niveau de son extrémité à l'extrémité arrière du longeron inférieur (2), ceci de manière mobile dans son sens transversal de sorte que le cylindre télescopique d'avance (6) et la tige (7) de piston soient toujours protégés des dommages, étant positionnés entre le longeron supérieur (1) et le longeron inférieur.

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