Alloy steel rail leg and small-radius rhombic turnout formed by welding three materials: Fid-Bau Portal

Alloy steel rail leg and small-radius rhombic turnout formed by welding three materials

ZHOU JIANXIN / WU JIANKANG / SHU WENLONG / CAI SHAOFENG / XU BIN / XIAO BO / ZHANG YUNXIANG

The invention discloses an alloy steel rail leg and a small-radius rhombic turnout formed by welding three materials. Each alloy steel rail leg comprises abrasion-resistant alloy steel located on theupper portion and a low alloy steel base located on the lower portion. The wear-resistant alloy steel is welded on the top surface of the low alloy steel base; the alloy steel rail legs extend in therunning direction of a vehicle. The cross section of the wear-resisting alloy steel is larger than that of a steel rail on a line. Rail leg rail grooves matched with the fork point rail grooves are formed in the top of the abrasion-resistant alloy steel in the same direction, the ends of the alloy steel rail legs are connected to a fork center or a steel rail or another alloy steel rail leg, the fork center and the steel rail are welded to the ends of the alloy steel rail legs, and a gap is reserved between the connected alloy steel rail legs. The material performance, the mass and the sectionof the alloy steel rail leg are all larger than those of a light rail so that the structural strength of the small-radius turnout in the part is obviously enhanced, the alloy steel rail leg is heavyin self weight, impact can be effectively resisted, and it is guaranteed that abrasion of the turnout is low.

本发明公开了一种合金钢轨腿及一种三种材料焊接制成的小半径菱形道岔，合金钢轨腿包括位于上部的耐磨合金钢和位于下部的低合金钢基座，所述耐磨合金钢焊接在所述低合金钢基座的顶面上，所述合金钢轨腿沿车辆行驶方向延伸，所述耐磨合金钢的横截面大于线路上钢轨的横截面，所述耐磨合金钢顶部同向开设有与所述叉心轨槽配合的轨腿轨槽，所述合金钢轨腿端部连接到叉心、钢轨或另一个合金钢轨腿，所述叉心和所述钢轨焊接到所述合金钢轨腿端部，相连的所述合金钢轨腿之间留有空隙。合金钢轨腿的材质性能、质量和截面都比轻质轨道大，因此小半径道岔在该部分的结构强度得到明显增强，合金钢轨腿自重重，能有效抵抗冲击，保证道岔的磨耗较低。

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