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
B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
B61F5/26—Mounting or securing axle-boxes in vehicle or bogie underframes
B61F5/30—Axle-boxes mounted for movement under spring control in vehicle or bogie underframes
B61F5/301—Axle-boxes mounted for movement under spring control in vehicle or bogie underframes incorporating metal springs
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