发明名称 |
Rail road freight car truck with self-steering rocker |
摘要 |
A rail road freight car truck has a truck bolster mounted transversely between a pair of side frames. The mounting interface between the wheelset axle ends and the sideframe pedestals allows self-restorative longitudinal rocking self-steering motion proportionately resisted as a function of displacement and of the vertical force carried at the interface. The center of rotation of the rocking motion is lower than the center of rotation of the axle. The interface may also permit lateral rocking swing motion of the sideframes. Auxiliary centering elements may be mounted in the pedestal seats. The auxiliary centering elements may be elastomeric. The truck may also have low stick-slip friction dampers, and may be provided with brake linings, or similar features. The friction dampers may be mounted in a four-cornered arrangement at each end of the truck bolster. |
申请公布号 |
US8726812(B2) |
申请公布日期 |
2014.05.20 |
申请号 |
US201213620958 |
申请日期 |
2012.09.15 |
申请人 |
FORBES JAMES WILFRED;HEMATIAN JAMAL;NATIONAL STEEL CAR LIMITED |
发明人 |
FORBES JAMES WILFRED;HEMATIAN JAMAL |
分类号 |
B61F5/26;B61F;B61F3/00;B61F5/30 |
主分类号 |
B61F5/26 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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