Patent ID: 7640865

Claim:
A rail car shunting device for road-rail operation, for shunting rail cars guided on a track with mutually parallel rails, comprising: a bogie; wheels with rubber tires mounted on said bogie, said wheels defining a rolling level; bolt elements each assigned to a respective said wheel and mounted for movement from a first, retracted position for a road mode in which a lower end face of said bolt element is disposed above said rolling level of said wheel, downward beyond said rolling level into a second, deployed position for a rail mode in which said lower end face of said bolt element is disposed below said rolling level; an adjusting device for moving each said bolt element between said retracted position for the road mode and said deployed position for the rail mode, such that, in said deployed position, outer peripheral faces of said bolt elements of two wheels that are assigned to one another extend along an inner lateral edge and/or an outer lateral edge of the rails in order to guide said wheels on the rails; said four wheels each being pivotally mounted on said bogie and rotatable by way of servomotors, and each said wheel having a respective drive motor assigned thereto for driving the respective said wheel, in order to do drive and steer the rail car shunting device in a desired direction in the road mode when said elements are retracted.