【摘要】 为了分析和排除牙轮钻机常见故障，首先给出了系统正常运行状态的标准，然后抓住一些较关键、较突出的故障现象进行对比，指出这些不正常状态造成的危害和形成的原因及消除办法，以期对更好地维护牙轮钻机的正常运行有所助益。更多还原

【Abstract】 In order to analyze and shoot common troubles with rotary rig, the author provides at first the standard of normal running of electric system,then compares some important trouble phenomena;points out the harm created by these irregular running ,the resulting causes and the eliminating methods,and hopes that this paper would be helpful to better keeping the normal running of rotary rig.更多还原