NATURAL GROUND CUTTING APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a natural ground cutting apparatus capable of considerably extending a cutting construction section of the natural ground by increasing a storage amount of a flexible cutting tool such as a wire saw.SOLUTION: The natural ground cutting apparatus for cutting the natural ground in ditch shape with the flexible cutting tool 65 such as the endless wire saw includes a machine frame 50 of rectangular parallelepiped shape as a whole; a main pulley 51 provided inside the machine frame 50 and having a horizontal shaft to reciprocate in the longitudinal direction of the machine frame; a large number of adjusting pulleys 54a, 54b provided on a side face extended in the longitudinal direction of the machine frame 50 so as to form two rows in the longitudinal direction at mutual spaces, and having horizontal shafts parallel with the shaft of the main pulley 51; and the flexible cutting tool 65 wound on the main pulley 51 and the adjusting pulleys 54a, 54b. Each adjusting pulley can be wound with the flexible cutting tool 65 in a plurality of stages.