B - Operations – Transporting – 61 – F
Patent
B - Operations, Transporting
61
F
B61F 5/00 (2006.01) B61D 3/10 (2006.01) B61D 3/18 (2006.01) B61F 5/12 (2006.01)
Patent
CA 2354611
An auto rack rail road freight car is provided for carrying low density, relatively high value, relatively fragile lading. The car has a relatively soft suspension and an empty vertical bounce natural frequency of less than 2.0 Hz. The car also has additional ballast to increase the dead sprung weight of the car relative to the weight of the lading. In the embodiments in which multi-unit articulated freight cars are employed, such as for auto rack rail cars, the ballast is located preferentially toward the coupler end trucks. The trucks for the rail car have an increased wheel base and damping located to provide a greater moment arm and bearing face to encourage a higher threshold for rail car hunting.
L'invention concerne un wagon de marchandises conçu pour le transport de chargements de faible densité, de valeur relativement élevée et relativement fragiles. Le wagon est pourvu d'une suspension relativement souple et possède une fréquence propre d'oscillation verticale inférieure à 2,0 Hz. Le wagon est également pourvu de ballast supplémentaire dont la fonction est d'accroître le poids suspendu du wagon par rapport au poids du chargement. Dans les cas où des wagons articulés sont nécessaires, notamment dans le cas des wagons porte-automobiles, le ballast est, de préférence, situé à proximité des bogies, qui se trouvent aux extrémités des wagons. Les bogies du wagon visé par l'invention possèdent un empattement accru et des éléments amortisseurs disposés de sorte à offrir un bras de levier supérieur et une surface portante accrue afin d'augmenter le seuil d'oscillation transversale du wagon.
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
National Steel Car Limited
LandOfFree
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