一款新型非对称轨道减振扣件的设计

Design of a New Dissymmetry Track Damping Fastener

介绍了一种钢轨内外侧结构非对称设计的新型轨道减振扣件。该扣件由承轨板、橡胶圈和底座三部份组成。其中,承轨板用于安装固定钢轨,底座通过锚固螺栓固定在道床上,橡胶圈将承轨板和底座通过粘接硫化成一个整体。该设计的显著特点是在轨道的横向采取非对称结构,以提高轨道的横向稳定性。对该扣件进行有限元分析计算及静刚度试验,结果表明,减振扣件的垂向刚度与横向刚度达到和谐的统一,既保证轨道安全又能提高扣件的减振性能。

A new track damping fastener is introduced in this paper, which is formed with three parts： top plate, rubber circle and bottom plate. The top plate is installed to fasten the track, and bottom plate is fastened on the bed with anchor bolt, after vulcanization the rubber circle will bond the top plate and bottom plate into a whole. The most obviously characteristic of this fastener is the dissymmetry structure, aiming to improve the stability on track crosswise direction. The test result shows that the damping fastener vertical and crosswise stiffness could be integrated with FEM, thus could secure the track safety and improve fas- tener damping performance.