(一)前言机车超速行驶是机车运行中普遍存在的现象。这不仅严重违反了铁路运行规程,同时还给工务部门线路维修增添了负担,影响行车安全。所以,控制机车速度对保证铁路行车安全具有重要的意义。(二)机车超速自动报警装置的实用性1.有较宽的超速记录范围由于各铁路干线的最高允许速度不同,因此机车超速记录装置就应有较宽的运用范围,以适应不同线路的超速记录要求。 (A) Foreword locomotive speeding is a common phenomenon in locomotive operation. This not only seriously violated the railway operation rules, but also added a burden to the maintenance department line maintenance, affecting traffic safety. Therefore, the control of locomotive speed is of great significance to ensure the safety of railway traffic. (B) the locomotive speeding automatic alarm device practical 1. A wide range of speeding record As the maximum allowable speed of the railway lines are different, so the locomotive speeding device should have a wider range of applications in order to adapt to different lines of speeding Record requirements.