Fireproof equipment hoisting opening

The invention discloses a fireproof equipment hoisting opening which comprises a frame, a plurality of cover plates and a cover plate rotating mechanism. The frame is arranged around the object hanging hole, and the cover plates are rotatably connected with the frame through the cover plate rotating mechanism; the device is characterized in that all the cover plates and the cover plate rotating mechanism are provided with fireproof plates and/or fireproof cotton; a first smoke isolation sealing structure is arranged at the joint gap of the plurality of cover plates and the frame, and a second smoke isolation sealing structure is arranged at the joint gap between every two adjacent cover plates. The flame-retardant and smoke-isolating cable is good in flame-retardant and smoke-isolating effect and high in 本发明公开了防火型设备吊装口，包括框架、若干块盖板和盖板转动机构；框架设置在吊物孔的周围，若干块盖板通过盖板转动机构与框架可转动地连接；其特点在于，各盖板以及盖板转动机构均设有防火板和/或防火棉；若干块盖板与框架的交接缝隙处设有第一隔烟密封结构，相邻两块盖板之间的交接缝隙处设有第二隔烟密封结构。本发明阻燃隔烟效果好，使用安全性高。