Mechanical type fire prevention biological shield self -closing apron

The utility model relates to a mechanical type fire prevention biological shield self -closing apron, including support, drive mechanism, apron, balancing weight and fuse, drive mechanism sets up on the support, apron, balancing weight all set up drive mechanism is last, just the apron with the balancing weight between be connected through the drive mechanism transmission, the apron is in throughfuse locking the upper end of support. The utility model discloses have at nuclear facilities etc. Under the condition of radiation, fire prevention, do not rely on the operation of motor or crane, but rely on the structural design of material physics characteristic and realize through mechanical system self -closing to realize the effect of fire prevention isolation. 本实用新型涉及种机械式防火生物屏蔽自动关闭盖板，包括支架、传动机构、盖板、配重块以及熔断器；所述传动机构设置在支架上，所述盖板、配重块均设置在所述传动机构上，且所述盖板与配重块之间通过传动机构传动连接，所述盖板通过熔断器锁紧在所述支架的上端。本实用新型在核设施等具有辐射、防火的条件下，不依赖电机或吊车操作，而是依赖材料物理特性的结构设计来实现通过机械方式自动关闭，从而实现防火隔离的作用。