Abstract: A grouser for crawler vehicle tracks defined by a fastening member which extends in a first direction substantially crosswise to a second traveling direction of a track, is fixed to at least one supporting belt of the track, and has an inner cavity open laterally in the first direction. The grouser includes a toothed gripping member projecting from the fastening member to grip the terrain. The grouser also includes two plugs for closing the inner cavity laterally in the first direction.

Abstract: A grouser for crawler vehicle tracks defined by a fastening member which extends in a first direction substantially crosswise to a second traveling direction of a track, is fixed to at least one supporting belt of the track, and has an inner cavity open laterally in the first direction. The grouser includes a toothed gripping member projecting from the fastening member to grip the terrain. The grouser also includes two plugs for closing the inner cavity laterally in the first direction.

Abstract: A milling unit for the beating of snow-covered slopes consisting of a box-shaped structure comprising a central part to which two side parts are connected by hinging elements, in order to allow for oscillation. The structure has two hooking elements for its connection to a tool-holder, in turn connected to a rear part of the vehicle and, on the opposite side the structure has a rake for the beating of the snow. Inside each of the side portions of the structure there is a side miller and within the central structure there is a central miller, where the side millers can be activated in rotation by at least one motor, and each one of them is connected to the central miller by a constant-velocity transmission. The hinging axles do not pass through the axles of the central and the side millers.