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1. 发明授权

US06796448B1 Railcar draft gear housing 有权
标题翻译：铁路牵引齿轮箱
公开(公告)号：US06796448B1
公开(公告)日：2004-09-28
申请号：US10379028
申请日：2003-03-04
申请人： Donald E. Wilt , David G. Anderson , Andrew W. Withall
发明人： Donald E. Wilt , David G. Anderson , Andrew W. Withall
IPC分类号： B61G1100
CPC分类号： B61G9/24 , B61G7/10
摘要： A railcar draft gear housing formed from an austempered ductile iron casting having an original shape and including an open end, a closed end, and wall structure axially extending between the housing's ends. The wall structure of the housing defines an axial section between and spaced from the ends. The axial section of the wall structure is configured to withstand impact energy imparted to the housing in excess of 81,000 inch pounds while retaining and exhibiting substantially linear elasticity wherein the resultant ratio of stress to energy input remains substantially constant thereby allowing for flexible distortion of the housing in a manner promoting enhanced energy damping characteristics while allowing the casting to return to the original shape after the impact energy is released threrefrom.
摘要翻译：轨道牵引齿轮壳体由具有原始形状的奥氏体球墨铸铁铸件形成并且包括在壳体的端部之间轴向延伸的开口端，封闭端和壁结构。壳体的壁结构限定了在两端之间和间隔开的轴向部分。壁结构的轴向部分构造成承受超过81,000英寸磅的施加到壳体的冲击能量，同时保持并呈现基本上线性的弹性，其中应力与能量输入的合成比保持基本上恒定，从而允许壳体的柔性变形以促进增强的能量阻尼特性的方式，同时允许铸造在冲击能量被释放之后恢复到原始形状。

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