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    Rail seat crown and concrete rail tie having the same
    1.
    发明授权
    Rail seat crown and concrete rail tie having the same 有权

    公开(公告)号：US10011954B1

    公开(公告)日：2018-07-03

    申请号：US15459279

    申请日：2017-03-15

    申请人： John K Martin

    发明人： John K Martin

    IPC分类号： E01B3/42 ,  E01B3/40 ,  E01B9/04

    CPC分类号： E01B3/42 ,  E01B3/46

    摘要： A concrete rail tie has an elongated tie body made of a first concrete material. The elongated tie body has an elongated top surface having a shaped profile. A preformed rail seat crown made of a second concrete material is embedded in the elongated tie body and disposed at a rail seat location of the elongated tie body. The preformed rail seat crown has top side flush with and shaped to match the shaped profile of the elongated top surface of the elongated tie body. And the second concrete material has a greater compressive strength and a greater flexural strength than the first concrete material.

    Internally resilient tie for railway track
    8.
    发明申请
    Internally resilient tie for railway track 审中-公开
    铁路轨道内弹性领带

    公开(公告)号：US20030136858A1

    公开(公告)日：2003-07-24

    申请号：US10050937

    申请日：2002-01-22

    发明人： Jan Herman Zicha

    IPC分类号： E01B009/38

    CPC分类号： E01B19/003 ,  E01B3/36 ,  E01B3/42 ,  E01B2204/01

    摘要： The Internally Resilient Railroad Tie consists of two independent booted blocks placed in a tie case, one under each rail. An elastomeric bottom pad is placed under each block inside the boot. The stiffness of the elastomeric bottom pad is varied to compensate for the variations of the overall stiffniess of the track that often involves under-lying materials that are difficult to access for modification or replacement. The mass of the block, suspended between the elastomeric bottom pad and the elastomeric rail pad, provides a damper action that along with the enhanced elasticity of the assembly reduces dynamic impact forces and abates vibrations. The damper system reduces the duration and significance of dynamic peak forces and vibrations. However, variations of any or all of the damper system's components can be used to compensate for the variations of the overall dynamic response of the track where needed. A block retainer facilitates lifting whole tie assembly by rail during track installation and maintenance, as well as releasing the blocks during replacements of the bottom elastomeric pad. In service, the block retainer preferably does not restrain elastomers and allows for the rail float. This feature leads to further reduction of track maintenance. In weak soils, or where the carrying participation of ballast and/or surface soils is undesirable or unfeasible, the internally resilient ties can be placed on piles, pile caps, longitudinal beams, firm foundations, bridge decks and tunnel inverts because the internally resilient tie is capable of substituting for ballast action and for the elastic contributions of subgrade. Internally resilient ties are suitable for transition zones between ballasted and ballastless track zones.

    摘要翻译： 内部弹性铁路领带包括两个独立的引导块，放在一个领带箱中，一个在每个轨道下。 将弹性底垫放置在靴子内的每个块下。 弹性体底垫的刚度是变化的，以补偿轨道的总体硬度的变化，其通常涉及难以进行修改或更换的下面的材料。 悬挂在弹性体底垫和弹性体轨道垫之间的块的质量提供了阻尼作用，随着组件的增强弹性减小动态冲击力并减轻振动。 阻尼器系统减少动态峰值力和振动的持续时间和重要性。 然而，可以使用任何或所有阻尼器系统部件的变化来补偿所需轨道的整个动态响应的变化。 块固定器有助于在轨道安装和维护期间通过导轨提升整个连接组件，以及在更换底部弹性垫期间释放块。 在使用中，块保持器优选地不限制弹性体并且允许轨道浮动。 此功能可进一步减少轨道维护。 在弱土壤中，或者压载物和/或表面土壤的携带参与是不希望的或不可行的，内部弹性连接可以放置在桩，桩帽，纵向梁，坚固的基础，桥面和隧道倒塌上，因为内部弹性系 能够代替压载作用和路基的弹性贡献。 内部弹性连接适用于压载和无碴轨道区域之间的过渡区域。