B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
B61F3/00—Types of bogies
B61F3/02—Types of bogies with more than one axle
B61F3/08—Types of bogies with more than one axle without driven axles or wheels
Structure porteuse comportant un chassis intermediaire porte par un chassis principal, procede de montage de cette structure, et application a un groupe motopropulseur de vehicule automobile