Ride control constant contact side bearing arrangement

Details Ride control constant contact side bearing arrangement Ride control constant contact side bearing arrangement

B - Operations, Transporting

61

F

B61F 5/14 (2006.01)

Patent

CA 2489162

A long travel constant contact side bearing for railway cars provides better handling characteristics, achieving improved tracking and curving through use of various combinations of features. Such a long travel side bearing is able to meet recent stringent American Association of Railroads standards, such as M-976. Lowered spring rates, preferably less than 6,000 lb/in., help with stability and reduce set-up sensitivity. Reduced cap and base dimensions and spring design help achieve travel of at least 5/8". A visual inspection windows allows ready inspection. Increased service life and wear characteristics are obtained by addition of hardened wear surfaces, improved tolerances, changes to Grade E steel, increase of top contact surface flatness and coped top surface peripheral edges. Standardized sets of spring components can be mixed and matched, requiring fewer specialty parts. Interchangeability of improper components can be prevented by a combination of keying features and/or spring lockout features.

Un palier lat~ral ~ contact constant ~ long cheminement destin~ ~ des wagons ferroviaires pr~sente de meilleures caract~ristiques de maniabilit~, r~alisent une meilleure tenue d'axe et n~gocie mieux les courbes via l'utilisation de diverses combinaisons d'~l~ments. Ce palier lat~ral ~ long cheminement est capable d'atteindre les r~centes normes rigoureuses de l'American Association of Railroad, telles que la norme M-976. Des raideurs de ressort abaiss~e, de pr~f~rence en dessous de 6000 livres/pouce, favorisent la stabilit~ et r~duisent la sensibilit~ du montage. Des bouchons, des dimensions de base r~duits et une conception de ressort permettent d'obtenir un cheminement d'au moins 5/8''. Des fenÚtres d'inspection visuelle permettent une inspection imm~diate. On obtient une dur~e de vie utile et des caract~ristiques d'usures am~lior~es par l'addition de surfaces d'usure durcies, par des tol~rances am~lior~es, par des changements de l'acier en niveau E, par une am~lioration de la planarit~ des surfaces de contact et par des bords p~riph~riques de surface sup~rieure en dos d'~ne. On peut m~langer et apparier des ensembles normalis~s d'~l~ments de ressort, ce qui n~cessite moins de pi­ces sp~cialis~es. L'interchangeabilit~ d'~l~ments non adapt~s peut Útre ~vit~e par une combinaison de caract~ristiques de d~trompeur et/ou par des caract~ristiques de verrouillage de ressort.

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