B - Operations – Transporting – 60 – G
Patent
B - Operations, Transporting
60
G
B60G 5/02 (2006.01) B60G 11/22 (2006.01) B60G 11/24 (2006.01) F16F 1/40 (2006.01) F16F 1/50 (2006.01)
Patent
CA 2716198
An elastomeric spring suspension is described for supporting a longitudinally extending vehicle frame rail above first and second axles forming a tandem axle configuration. The suspension includes a frame hanger assembly mounted to the ve-hicle frame rail. The frame hanger assembly has two full spring modules, each of which includes two shear springs, a progressive spring rate load cushion having a pyramidal shape with a flattened top surface and a spring mount for mounting the springs. A saddle assembly is connected to the spring mount, and an equalizing beam is connected to the saddle assembly and further con-nected to the axles. The spring rate for the suspension increases almost linearly as a function of sprung load, resembling a pneu-matic suspension. Accordingly, the suspension exhibits excellent ride quality, without sacrificing roll stability.
La présente invention se rapporte à une suspension à ressort élastomère destinée à soutenir un longeron de châssis de véhicule sétendant longitudinalement au-dessus de premier et second essieux formant une configuration essieux tandem. La suspension comprend un ensemble dispositif de suspension de châssis monté sur le longeron de châssis de véhicule. Lensemble dispositif de suspension comporte deux modules ressorts complets, chacun comprenant deux ressorts de cisaillement, un amortisseur progressif de charge de constante de rappel ayant une forme pyramidale avec une surface supérieure aplatie et une monture de ressort pour monter les ressorts. Un ensemble selle est relié à la monture de ressort, et une poutre déquilibrage est reliée à lensemble selle et reliée en outre aux essieux. La constante de rappel pour la suspension augmente presque linéairement en fonction de la charge de ressort, ressemblant à une suspension pneumatique. En conséquence, la suspension présente une excellente qualité de mouvement, sans sacrifier la stabilité de roulement.
Brannigan Michael
Dudding Ashley T.
Forrest Christopher W.
Noble Shawn D.
Robinson Michael P.
Goodmans Llp
Hendrickson Usa L.l.c.
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