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1.发明授权Lightweight fatigue resistant railcar truck sideframe with tapering I-beam construction 失效轻型耐疲劳的轨道车侧车架采用锥形工字钢结构
公开(公告)号：US5410968A
公开(公告)日：1995-05-02
申请号：US131143
申请日：1993-10-04
CPC分类号： B61F5/52
摘要： The sideframe of a railway car truck are constructed such that basic overall sideframe appearance is maintained, but the actual construction results in a more efficient use of the materials as a way of reducing the sideframe weight. This means that material is used according to how the stresses are encountered by the sideframe, dictating that the sideframe midsection is structurally heavier than the sideframe ends. Maximization of this construction is provided by shaping the entire sideframe into a solid, unitary cross-sectional I-beam shape. A solid top flange of the I-beam corresponds to the typical top compression member while the solid bottom flange corresponds to the typical bottom compression member. The solid vertical web, which interconnects the top and bottom flanges is a typical, thereby allowing the web to absorb forces which would normally have to be absorbed by either top or bottom member. This feature allows the sideframe to be lighter, yet structurally stronger because the top and bottom members can now be cast dimensionally smaller. To take advantage of the weight savings even further, the I-beam shape has a structurally tapering thickness from the midsection to the ends and this corresponds to the loading experienced by the sideframe. The open, I-beam exterior allows for easier and more reliable inspection, as well as improved casting quality due to a substantial reduction in casting core usage.
摘要翻译： 铁路车辆的侧架被构造成使得基本的整体侧架外观得以保持，但是实际的结构使得材料的更有效的使用作为减小侧架重量的方式。 这意味着根据侧架遇到的应力如何使用材料，这意味着侧框中央部在结构上比侧架端部重。 通过将整个侧架成形为固体，整体的横截面I形梁形状，可以实现该结构的最大化。 工字梁的固体顶部凸缘对应于典型的顶部压缩构件，而实心底部凸缘对应于典型的底部压缩构件。 互连顶部和底部凸缘的实心垂直腹板是典型的，从而允许腹板吸收通常必须由顶部或底部构件吸收的力。 该特征允许侧架更轻，但在结构上更强，因为顶部和底部构件现在可以尺寸更小。 为了进一步利用重量节省，工字梁形状具有从中部至末端的结构上逐渐变细的厚度，并且这对应于侧架所经受的载荷。 开放的I型梁外观允许更容易和更可靠的检查，以及由于铸造芯使用量的显着降低而提高了铸件质量。
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