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全路提速设备改造工程中普遍采用了道岔外锁闭装置,经过几年的运用,证明道岔采用了外锁闭装置极大地提高了道岔锁闭的可靠性,保证了提速列车运行的安全。特别是从原燕尾型锁(水平锁闭)改为我国自行研制的勾型外锁(立式锁闭)后设备运用更加稳定。由于勾型外锁研制的周期短,上道的时间快仍有部分需要优化和改进的地方。在运用中,发现问题较多的是可动心轨的外锁。
Throughout several years of application, it has been proved that the turnout adopts the external locking device, which greatly improves the reliability of the turnout locking and ensures the safety of the train running at a high speed. Especially from the original dovetail lock (horizontal lock) to our own developed hook type lock (vertical lock) after the use of more stable equipment. Due to the hook lock developed short cycle time on the road there are still some areas need optimization and improvement. In use, found that more problems can move the rail outside the lock.