DISPOSITIF DE LIMITATION DE COURSE POUR MECANISMES DE POUSSEE A PISTON, NOTAMMENT POUR VERINS DE RIPAGE OU D'AVANCE DESTINES A RIPER UN CONVOYEUR OU UN SOUTENEMENT MARCHANT DANS LES EXPLOITATIONS MINIERES AU FOND

摘要

A device for limiting the stroke of a hydraulic ram of mining apparatus employs a segmental stop which partly surrounds the piston rod of the ram. The stop locates between the cylinder of the ram and a head piece at the end of the piston rod. The cylinder of the ram makes contact with the stop during retraction of the ram thereby limiting the stroke of the ram. The stop is connected to the head piece via replaceable or adjustable pins. These pins permit the distance between the head piece and the stop element to be altered at will. The connection pins also enable the stop to be arranged to partly surround the piston rod periphery over different regions thereof.