CRAWLER TYPE TRAVELLER, AND CONTROL METHOD THEREOF

PROBLEM TO BE SOLVED: To provide a crawler type traveller capable of preventing entangling of a sheet, and a control method thereof.SOLUTION: A control method according an embodiment of the invention is a control method for a crawler type traveller comprising main crawler belts 4, arms 5, and disk-shaped tires 10. By driving of the arms 5, the crawler type traveller is brought into a turning mode. In the turning mode, an axle 9 of the disk-shaped tires 10 is positioned below a straight line connecting a front main rotation shaft 13 with a rear main rotation shaft 13 of the main crawler belts 4 in side view and the axle of the disk-shaped tires 10 is positioned between the front main rotation shaft 13 and the rear main rotation shaft 13 in the forth and back direction. The right and left disk-shaped tires 10 are rotated in opposite directions so as to turn the crawler type traveller 1.