| abstract |
The invention relates to a power supply safety monitoring device for a coal mine. The power supply safety monitoring device for the coal mine comprises a control box body, wherein the control box body comprises a connecting line plate, the outer surface of the connecting line plate is provided with a line hole, a control machine body is arranged inside the control box body, the surface of the control machine body is provided with a connecting groove body, a connecting line body is inserted into the connecting groove body, the connecting line body comprises a connecting piece, the connecting piece is inserted into the connecting groove body from the line hole, a sealing piece is arranged in the line hole, and the sealing piece is tightly contacted with the outer surface of the connecting piece after the connecting piece is inserted into the connecting groove body to seal the line; this power supply safety monitoring device for coal mine, simple structure, convenient operation uses in a flexible way, uses in the colliery of being convenient for, uses widely in the trade of being convenient for. |