COMPOSITE MATERIAL STRUCTURE FOR RAILROAD CAR CHASSIS

摘要

A structure, made from composite materials for a vehicle chassis, being configured to receive an undercarriage at its ends and includes at least one central beam that includes a median box having a central part and two ends with a reinforced structure, and the central part includes a reinforced part increasing the strength of the beam with respect to the bending stresses imposed by the transported load. The median box is reinforced by two lateral boxes extending over the entire length of the median box), assembled to the median box, the upper faces of which, together with the upper face of the median box, form the upper face of the beam. The structure includes a floor that covers the upper faces of the median box and the lateral boxes. The elements making up the structure have shapes that are simple, easy to make from composite materials and easy to assemble.

主权项

1. A composite material structure, for chassis of vehicles for transporting freight, or passengers, said structure being configured to accept running gear at each of its ends, the structure includes at least one central beam forming a platform on which the load of the vehicle rests, said beam including:
a middle box having a central portion and two ends, said ends having reinforcements for withstanding the stresses transmitted to the chassis by the articulation elements of the running gear and by the shock absorber elements disposed at the ends of the vehicle, the central portion of the middle box being configured so as to have a reinforced portion increasing the resistance of the beam to bending forces imposed by the transported load; two lateral boxes extending over all the length of the middle box, assembled to said middle box, the upper faces of which form with the upper face of the middle box the upper face of the beam, said lateral boxes being configured so as to reinforce the resistance of the beam to longitudinal and transverse bending forces imposed on it; a covering floor forming a skin, configured so as to cover the upper faces of the middle box and the lateral boxes;The various elements constituting the beam being made of composite materials reinforced with glass fibers or carbon fibers or a mixture of glass fibers and carbon fibers.