Abstract: A train axle system with movable wheels, comprising an axle whose necks, where the wheels are positioned, are provided with a toothing formed with straight teeth having axial generators, the inner part of the wheel hubs having a similar toothing so that the rotating wheel is joined to the axle when it occupies positions corresponding to two track gauges, the axial blocking of the wheel being carried out by means of an outer locking bolt, there being attached to the end of the axle an external bearing (1) which supports the vertical load through a supporting part, the hub of the wheel (R) having a tubular extension with a central roller bearing (3) and two axial bearings (4), there being attached on the central bearing (3) a part (5) with protuberances (6) which assist in immobilising the wheel in each track gauge.

Abstract: A single-axle wheel set with outer suspension supports for railway vehicles with pendulum-type suspension. This wheel set consists of a flat, horizontal chassis on which the independent, movable wheels are mounted, and upright suspension supports situated at the outer part of the wheels and joined to each other at their upper part by means of a crosspiece to form a portico, in whose upper part suspension springs are provided.

Abstract: Single-axle running gear with movable independent wheels for articulated car transporter wagons. The running gear comprises a carrying frame (1), suspension springs (2) with vertical dampers (AV) mounted inside them, sliding shoes for supporting the running gear during the process of changing track gauge, suspension headers (4) with stabilizing arms (5), hanging suspension links connected to the suspension headers, and systems for guiding the running gear. The invention is useful for allowing the articulated car transporter platform wagons to be used on networks with two different track guages.

Abstract: Railway axle assembly furnished with automatic change of track gauge and adaptable to conventional freight bogies. It comprises two independent rolling element assemblies (2), each composed of a wheel, a semiaxle, an outer bearing and an inner bearing, the inner bearing carrying a locking catch with two vertical shafts connected together by a bridge which contains the pieces which facilitate its unlocking and subsequent locking. It also includes an axle frame (1) on which are mounted the rolling elements (2) and their locking systems, a device (3) for connecting between the rolling elements, two trusses (4) for translating the brake shoes, a system of electrical continuity between wheels and a device (6) for detecting hot inner bearings. The invention is useful for converting current bogies with fixed axles into bogies with transversely displaceable axles.