Reference system for track working machine

Claim 1

A reference system for a track working machine comprising a vertically and/or laterally adjustable working tool unit, which comprises (a) a front carriage spaced from a front end of the machine and being movable independently thereof, (b) wireless remote control means mounted on the machine and controlling the independent movement of the front carriage, (c) a television camera and an emitter of a reference guide beam pivotally mounted on the front carriage, the television camera and the emitter forming a structural unit and having optical axes extending parallel to each other, (d) drive means for pivoting the structural unit, the drive means comprising three drives independently controlled by the wireless remote control means for respectively pivoting the structural unit about three axes extending substantially perpendicularly to each other, (e) a reference means mounted on the machine and controlling the vertical and/or lateral adjustment of the working tool unit, (f) a reference guide beam receiver associated with the reference means and arranged on the machine for receiving the reference guide beam from the emitter, and (g) a monitor mounted on the machine and in communication with the television camera.