Lightweight railcar truck sideframe with increased resistance to

Details Lightweight railcar truck sideframe with increased resistance to Lightweight railcar truck sideframe with increased resistance to

1995-07-13

1996-08-20

Oberleitner, Robert J.

Railway rolling stock

Trucks

Bogie

B61F 552

Patent

active

055468691

ABSTRACT:
A lightweight sideframe having a solid and open, unitary cross-sectional I-beam shape, is structurally improved by strengthening both sides of the sideframe with cross-bracing at each pedestal jaw area. The cross-bracing laterally stiffens the sideframe, eliminating the succeptability to twisting of the I-beam shape when a transverse load is experienced. The increased lateral stiffness at the jaw area also strengthens the total lateral strength of the sideframe, allowing some removal of metallic mass from the sideframe spring seat plate. The improved lateral sideframe strength also contributes to an increase in the threshold speed of truck hunting.

REFERENCES:
patent: 1081405 (1913-12-01), Richards
patent: 1191979 (1916-07-01), McKeen, Jr.
patent: 4351242 (1982-09-01), Irwin
patent: 5410968 (1995-05-01), Hawthorne et al.

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