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    Method of laying railroad rail
    1.
    发明授权
    Method of laying railroad rail 失效
    铁路轨道铺设方法

    公开(公告)号：US3999276A

    公开(公告)日：1976-12-28

    申请号：US181105

    申请日：1971-09-16

    申请人： Robert M. Brown ,  Melvin E. Byrne ,  George H. Maxwell

    发明人： Robert M. Brown ,  Melvin E. Byrne ,  George H. Maxwell

    IPC分类号： E01B27/17 ,  E01B31/18 ,  E01B29/02 ,  E01B29/42

    CPC分类号： E01B27/17 ,  E01B31/18 ,  Y10S29/046 ,  Y10T29/49831 ,  Y10T29/49865

    摘要： The disclosure relates to laying railroad rail. The rail is placed on the unspiked tie plates of a roadbed. One end is fixed in place. Starting at the fixed end, successive sections of the rail are if necessary subjected to heat exchange to bring them to a predetermined temperature, relates to the mean ambient temperature of the locality where the rail is being laid. The necessary heating or cooling may be performed using means moved along the rail from the fixed end toward the free end. In order that rail may be laid at said predetermined temperature and while stress free, vibrations are imparted to the rail whereby any stress tending to develop in the rail from expansion or contraction, because of the temperature change, is relieved. The stress free rail at the predetermined temperature is then spiked in place and rail anchors are applied. By practice of the disclosed method, railroad track is produced which is stress free at said predetermined temperature and is uniformly stressed under other temperature conditions. These stresses are controlled by proper selection of the predetermined temperature used in laying operation.

    摘要翻译： 本公开涉及铺设铁路轨道。 轨道被放置在路基的未刺激的平台上。 一端固定就位。 从固定端开始，轨道的连续部分必要时进行热交换使其达到预定温度，涉及轨道铺设的地点的平均环境温度。 可以使用沿着轨道从固定端向自由端移动的装置来执行必要的加热或冷却。 为了使轨道可以放置在所述预定温度并且在无应力的情况下，振动被施加到轨道，由此由于温度变化，倾向于在轨道中膨胀或收缩的任何应力被释放。 然后将预定温度下的无应力导轨加入到位，并施加导轨锚。 通过实施所公开的方法，产生在所述预定温度下无应力的铁轨，并在其它温度条件下均匀地受力。 这些应力通过适当地选择放置操作中使用的预定温度来控制。