Automatic adjusting device for thermal expansion and cold contraction of railway fastener: Fid-Bau Portal

Automatic adjusting device for thermal expansion and cold contraction of railway fastener

CEN YUFEI

The invention relates to the technical field of rail transit, and discloses an automatic adjusting device for thermal expansion and cold contraction of the railway fastener. The device comprises a sleeper body, the sleeper body is built by concrete, two clamping plates are placed at the top of the sleeper body, the clamping plates are in a Z shape and are fixed to the sleeper body through fixing bolts, fixing holes are formed in the tops of the clamping plates, and teeth are arranged at the bottom of a base plate and openings of the fixing holes. The utility model discloses a railway fastenerthermal expansion and cold contraction automatic adjusting device. A connecting plate and a mounting block are mounted between a clamping plate and a rail; rail when heated to expand, the mounting block is pushed by the movable connecting plate to move obliquely upwards; when the installation blocks slide along the rolling wheels and the rail contracts, the connecting plates move obliquely downwards, so that the distance between the clamping plates and the installation blocks is increased during expansion, expansion space is provided for the rail, the distance between the clamping plates and the installation blocks is reduced during contraction, the rail is kept in a clamped state all the time, and the safety of the rail is improved.

本发明涉及轨道交通技术领域，且公开了一种铁道扣件热张冷缩自动调节装置，包括轨枕，轨枕采用混凝土筑成，所述轨枕顶部放置有两个夹板，所述夹板的形状呈Z形，通过固定螺栓固定在轨枕上，所述夹板的顶部开设有固定孔，所述垫板的底部与固定孔的开口处均设置有齿牙。该铁道扣件热张冷缩自动调节装置，通过在夹板和铁轨之间安装连接板和安装块，当铁轨受热膨胀时，通过动连接板推动安装块向斜上方移动，安装块顺着滚轮滑动，铁轨收缩时，连接板向斜下方移动，这样膨胀时增大夹板和安装块之间的间距，为铁轨提供膨胀空间，收缩时减小夹板和安装块之间的间距，使其一直保持夹紧状态，提高了轨道的安全性。

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