CRAWLER TRAVELING DEVICE

PROBLEM TO BE SOLVED: To provide a crawler traveling device capable of suppressing reduction in propulsion efficiency.SOLUTION: A crawler traveling device comprises: a crawler belt 15; a plurality of core metals 18 embedded in the crawler belt 15 in a belt circumferential direction with an interval; engagement holes formed on the crawler belt 15 in the belt circumferential direction between adjacent core metals 18 in a state where the core metals 18 are exposed; a driving wheel body 10 rotatively driving the crawler belt 15; and a plurality of engagement projections 21 in a wheel body circumferential direction arranged on a peripheral part of the driving wheel body 10 so as to get into the engagement holes and contact to the core metals 18. A contact surface 30 of the engagement projections 21 to the core metals 18 comprises a flush contact surface 32 contacting to the core metals 18 in a flush manner along with the projection direction.