Device for improving warp stiffness of a railcar truck

Details Device for improving warp stiffness of a railcar truck Device for improving warp stiffness of a railcar truck

1994-10-17

1996-04-02

Le, Mark T.

Railway rolling stock

Trucks

Axle bearing mounting

105220, 1052241, 105167, B61F 1500

Patent

active

055030840

ABSTRACT:
A structural device is attached to each sideframe pedestal jaw of a railcar truck wherein the bearing adapter is joined to the sideframe and is prevented from rotating within the pedestal jaw opening. The bearing adapter inboard and outboard faces maintain a parallel relationship with the sideframe inboard and outboard faces during operations, including curving, thereby causing the truck axles to remain at a right angle with respect to the sideframes. Maintaining this right angular relationship substantially curtails truck wheel misalignment, which directly effects truck hunting and curving.

REFERENCES:
patent: 2782732 (1957-02-01), Rossell
patent: 3621792 (1971-11-01), Lich
patent: 3862606 (1975-01-01), Scales
patent: 4170180 (1979-10-01), Houston
patent: 4258629 (1981-03-01), Jackson et al.
patent: 4674412 (1987-06-01), Mulcahy et al.
patent: 4870914 (1989-10-01), Radwill
"Truck Hunting in the Three-Piece Freight Car Truck", by V. T. Hawthorne, P.E. Presented at the Winter Annual ASME Meeting, New York, NY, Dec. 2-7, 1979.
Goding, Patent Appln. No. 08/180,026, filed Jan. 11, 1994 for an Improved Truck Pedestal Design.

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