The Crawler is composed of a driving wheel, driving around the driving wheel, wheel, wheel and supporting flexible link induced pulley. The crawler is composed of crawler plate and crawler pin. The crawler board connected track chain track pin. Both ends of track plate with holes, and the driving gear, the gear is used to control the track, induction, and to prevent the tank to turn or roll the track off when running in contact with the ground side to strengthen the antiskid (the pattern), in order to improve the adhesion of solid track plate and track and ground surface.