煤层中回采及掘进时钻炮眼用的矿用隔爆型电动工具。
... hand drill 手摇钻 ; 手钻 ; 煤电钻 ; 手电钻 Foot drill 步操 ; 脚踏光计 ; 步操 THREADY DRILL 线斜纹 ; 线卡其 ; 线斜纹 ...
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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
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...d-held electric coal drill 隔爆型手持式煤电钻 westbank electric hand drill 手提电钻 electric hand drill for coal 煤电钻 ..
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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。
The paper mainly introduces the design method of power supply and earth-leakage circuit for the electric-coal-drill integrated unit.
煤电钻采用热继电器进行过载保护方式已逐渐被IC型过载保护电路取代。
IC type overload protection circuit has gradually replaced thermal relay overload protection mode.
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 problems in leakage protection and executive circuit of synthetical protection set in coal electric drill have been analyzed and calculated.
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