Rail vehicle suspension gear, particularly for the four-wheel cars

摘要

The invention provides a design solution for a suspension system of a railway vehicle, especially four-wheel freight car, that assures the system functioning at possibly low rolling resistance; at the same time this is solution assures that wheel sets can be correctly aligned in relation to tracks and stabilized, owing to which increased rolling resistance and wear-and-tear of both the wheel sets and rails is reduced. The objective has been achieved in such a way that in order to reduce friction resistance, rollers (9), preferably up to two of them, were incorporated in friction wedges (6) on a sloped surface, while other surfaces were provided with friction lining pads (7) and (8). Working surfaces of the wedge (13), also mating surfaces of the base plate (1) and saddle column (5) were provided with friction pads (7) of a material having low friction factor, below 0.2. For better stabilization of the suspension system, the crosswise rigidity of spring sets (2) was enhanced, and rigidity of conventional spring sets was increased by dividing the springs with a plate (10) at half height. Further increase of the spring system rigidity was achieved by connecting the dividing plates (10) from adjoining spring sets (2) to each other, and joining the matching connected plates (10) on both sides of a car by use of stabilizing rods (12).