Railway rolling stock – Trucks – Supplemental wheel
Patent
1995-02-24
1998-07-14
Oberleitner, Robert J.
Railway rolling stock
Trucks
Supplemental wheel
105 722, 280711, B61C 1100
Patent
active
057787980
ABSTRACT:
A suspension assembly for a large volume trailer has a pair of spaced apart control arms pivotally mounted beneath the trailer. One end of each control arm is pivotally mounted to a hanger bracket suspended from the trailer frame, and another end of each control arm has an axle stub mounted thereto for receiving a tire wheel assembly. A stabilizer beam extends transversely between the control arms, and is mounted to each of the control arms intermediate the pivot and the axle stub. A lower beam, parallel to the stabilizer beam, extends between the axle stubs and a pair of air springs are mounted between the lower beam and the trailer frame. A center weldment is attached to the lower beam intermediate the air springs, and to the stabilizer beam intermediate the control arms. A lift mechanism is attached directly to the stabilizer beam and includes compression springs acting against force plates to move the tire wheel assemblies between ground engaging and non-ground engaging positions through an interconnected lift bar. The lift mechanism will raise the tire wheel assemblies between a non-ground engaging position, a first ground engaging position, and a second ground engaging position for use in roadrailer applications.
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Bartz C. T.
Oberleitner Robert J.
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