Patent ID: 7481604

Claim:
A machine for digging a trench and making a wall in said trench, the machine being suitable for advancing along a path and comprising rear and front portions relative to the direction of advance of the machine, together with: excavator means disposed in the front portion of the machine and defining a substantially vertical cutting front; wall-forming means situated in the rear portion of the machine; and propulsion means suitable for causing the machine to advance along said path; the machine further comprising a central portion, controllable brake means for slowing advance or blocking at least one portion of the machine, and controllable connection and disconnection means for connecting and disconnecting the central portion respectively with the front and rear portions of the machine, thereby enabling the type of excavator means and the type of wall-forming means to be changed, wherein the machine further comprises guide means situated in the central portion for modifying the path by causing the cutting front to pivot in a horizontal plane relative to the rear portion of the machine, wherein the front portion of the machine can pivot relative to the rear portion of the machine, and wherein the guide means comprise at least one actuator engaged between the front and rear portions of the machine, so that actuating said at least one actuator causes the front portion to pivot relative to the rear portion of the machine.