Spring group for a railway truck assembly

B - Operations – Transporting – 61 – F

Patent

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B61F 5/06 (2006.01) F16F 3/04 (2006.01)

Patent

CA 2154338

A variable spring group for a railcar wheel truck assembly, which spring group has independent variable rate control springs for biasing snubber assemblies of a bolster in the wheel truck assembly, with the spring group having a first linear spring rate at an empty-railcar condition and a second linear spring rate at a loaded railcar condition that is at least five times as great as the empty-car spring rate, and the control springs are variable rate springs with a first and empty-railcar rate and a second and loaded-railcar spring rate, which is about twice the empty car control spring rate.

Groupe de ressorts à flexibilité variable pour bogie de wagon de chemin de fer. Ce groupe comporte des ressorts de commande de la flexibilité variable, qui sont indépendants, pour incliner les dispositifs amortisseurs à frottement d'une traverse danseuse dans le bogie; le groupe de ressorts possède une première raideur totale linéaire, lorsque le wagon est vide, et une deuxième, lorsqu'il est chargé, qui est au moins cinq fois plus grande que la raideur totale pour le wagon à vide, et les ressorts de commande sont des ressorts à flexibilité variable possédant une première raideur lorsque le wagon est vide et une deuxième lorsqu'il est chargé, cette raideur est environ le double de la raideur du ressort de commande pour le wagon vide.

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