ROCK DRILLING DEVICE AND DRILL RIG INCORPORATING A DEVICE FOR MEASURING THE LOCATION OF THE DRILLING MACHINE

摘要

This invention relates to a rock drilling device comprising a feed beam (4),which has a drill end (41) from which the drill point protrudes at drillingand a rear end (42) opposite said drill end; a rock drilling machine (5)movable along the feed beam (4); a pressure cylinder (6), which is arranged inconnection with the feed beam (4) with one end (622) movable relative to thefeed beam (4) and one end (611) fixedly arranged relative to the feed beam(4). The pressure cylinder (6) drives a feed line (51) for feeding thedrilling machine (5) to and fro along the feed beam (4). The feed line (51) isrouted over two outer sheaves (52,53) that are arranged at each end (41,42) ofthe feed beam (4) and a measuring device (7) for measuring the location of thedrilling machine (5) relative to the feed beam (4) is arranged to the shaft(9) of one of the sheaves (52,53) and the sheave and the shaft (9) arearranged such that they rotate together.