Method and system for controlling the movement of a mast of a drilling machine, in particular for obtaining piles

System for controlling the movement of a mast (5) of a drilling machine for obtaining piles;

• said system comprising:
• a movement supply circuit configured so as to be connected, at the inlet, with a power source and for delivering, at the outlet, a moving power to at least one linear actuator (7) so as to move a mast (5) mounted so as to swing with respect to a self-propelled structure (3) among a plurality of moving operating configurations;
• and
• an actuating supply circuit configured so as to be connected, at the inlet, with a power source and for delivering, at the outlet, an actuating power to a winch (8) which is supported by said self-propelled structure (3) so as to allow the winding or unwinding of a traction element which is constrained to a drilling assembly, in particular a bank of telescopic or kelly bars (12) to which a drilling tool can be associated;
• said system being characterised in that it further comprises:
• locking means (14, 15, 16, 16b, 17) which can be deactivated adapted to at least temporarily prevent and at least in a sense along the longitudinal axis of the mast (5) a relative axial movement between said drilling assembly (12) and said mast (5) during the passage between at least two consecutive operating configurations;
• and
• control means configured for automatically controlling the delivery of said moving power in a coordinated manner with the delivery of said actuating power when said locking means prevent said relative axial movement.