Rapidly-assembled fire preventing and smoke blocking brake

The invention belongs to the technical field of fire rescue and discloses a rapidly-assembled fire preventing and smoke blocking brake. The brake comprises a telescopic rod assembly and two roller shutter mechanisms, wherein a sliding rail consistent with the telescopic rod assembly in direction is arranged at the upper side of each roller shutter mechanism; the telescopic rod assembly is connected with the two sliding rails through hanging buckles; and support seats are arranged at two ends of the telescopic rod assembly separately. The telescopic rod assembly extends and retracts, the roller shutter mechanisms are stretched in a staggered manner along the sliding rails, the support seats at the two ends of the telescopic rod assembly are supported at two sides of a channel, and the roller shutter mechanisms are pulled downwards to be unfolded, so that the channel is closed, air circulation is effectively blocked, a fire and high-temperature smoke are prevented from spreading, an effective fireproof partitio