Landing door device

The landing door device comprises a bottom plate and a landing door hanging plate, a guide rail is arranged below the bottom plate, the landing door hanging plate slides along the top of the guide rail through a roller to achieve door opening and closing, and the landing door device further comprises a rope wheel assembly for achieving linkage of the landing door hanging plate, a heavy hammer assembly for achieving forced door closing and a landing door lock for locking a landing door and preventing the landing door from being opened. The rope wheel assembly comprises two rope wheels and a linkage rope wound on the rope wheels; the landing door hanging plates comprise the first hanging plate and the second hanging plate, and the two landing door hanging plates are arranged on the linkage ropes opposite in moving direction. The device is simple in structure and small in occupied space, and meets the requirements of new national standards. 本申请公开了一种层门装置，包括底板和层门挂板，所述底板下方设有导轨，所述层门挂板通过滚轮沿所述导轨顶部滑动实现开关门，还包括实现所述层门挂板联动