随着电液转辙机在全路的大量上道 ,其在运用过程中存在的问题日渐突出。 1999年共发生故障2 34件 ,其中影响行车 4 5件 ,延误列车 92列 ,故障延时 4 4ｈ 2 8ｍｉｎ。全年设备故障率 14 8%。因此 ,提高使用维护质量已成为电液转辙机推广运用过程中首要解决的问题。1　主要原因1 With the large number of electro-hydraulic switch machines on the road, the problems existing in the application process have become increasingly prominent. In 1999, a total of 2 34 vehicles were damaged, of which 45 were affected by traffic, 92 were delaying trains, and the delay was 4 4h 2 8min. The annual equipment failure rate of 14 8%. Therefore, to improve the quality of the use of maintenance has become the first solution to the problem of popularization and application of electro-hydraulic switch machine. 1 main reason 1