Snowfield actuating system

The utility model relates to a with the supporting crawler attachment technical field who uses of current vehicle, especially relate to a snowfield actuating system who is used for current sheave type automotive, including track assemblie to and the drive assembly of setting in the track assemblie top, track assemblie includes two splint, is equipped with a set of beam barrel between the splint, still is equipped with a track between two splint, and the track cladding is outside at the beam barrel, the surface of track is equipped with the bead, drive assembly includes two supports, is equipped with two drive wheels between two supports, and the drive wheel is cylindrical, and the surface of drive wheel evenly is equipped with stirs the arch, and the distance of stirring between two adjacent beads of bellied width and track surface is unanimous, the surface of drive wheel stir bead intermeshing protruding and the track surface, the top of support is equipped with the baffle, is equipped with the diaphragm bet