Rock drilling device and drill rig incorporating a pressure cylinder for feeding the drilling machine

摘要

The drill comprises a feeder beam with a drill crown protruding from its front end, a drilling device which can travel along the beam and a press cylinder at least partially housed inside the beam. The cylinder has one end which can move relative to the beam and one end which is in a fixed position at the rear end of the beam. The drive chain is powered by the cylinder and connected to the drilling device in order to move the latter backwards and forwards along the beam.