Device for improving warp stiffness of a railcar truck

Railway rolling stock – Trucks – Axle bearing mounting

Patent

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Details

B61F 526

Patent

active

057223270

ABSTRACT:
A sideframe pedestal jaw accommodates a bearing adapter which locks the adapter to the sideframe, thereby preventing it from all forms of movement within the pedestal jaw opening. Locking the bearing adapter forces the truck axles to remain at a right angle with respect to the sideframes. Maintaining this right angular relationship substantially curtails truck warpage, which induces wheel misalignment that leads to undesirable truck hunting and high speed instability.

REFERENCES:
patent: 1414554 (1922-05-01), Doerr
patent: 2207848 (1940-07-01), Barrows
patent: 4674412 (1987-06-01), Mulcahy et al.
patent: 4870914 (1989-10-01), Radwill
patent: 5450799 (1995-09-01), Goding
patent: 5509358 (1996-04-01), Hawthorne et al.
patent: 5537932 (1996-07-01), Jones
patent: 5572931 (1996-11-01), Lazar et al.
"Truck Hunting in the Three-Piece Freight Car Truck", by V.T. Hawthorne, P.E.

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