文章摘要信息 关键词 ： 煤体强度；钻屑温度；煤电钻；煤与瓦斯突出 [gap=576]Keywords : coal intensity；drillings temperature；electric coal drill；coal and gas outburst
基于148个网页-相关网页
Flameproof hand-held electric coal drill 隔爆型手持式煤电钻
Switch for electric coal drill 煤电钻开关
The problems in leakage protection and executive circuit of synthetical protection set in coal electric drill have been analyzed and calculated.
通过分析和计算说明老式煤电钻综合保护装置在漏电保护和执行电路中存在的问题。
The causes of using traditional wet drilling difficultly are analysed. And the wet drilling method of the coal electric drill of external spray hydroelectric interlock is related.
分析了传统湿式打眼难以推广应用的原因，叙述了外喷雾水电联锁煤电钻湿式打眼法。
The paper mainly introduces the design method of power supply and earth-leakage circuit for the electric-coal-drill integrated unit.
本文主要介绍煤电钻综合装置电源与漏电保护电路的设计方法。
应用推荐