Slowly lowering device for saving residents from building

The utility model relates to a slowly lowering device for saving residents from a building, which comprises a tie-line spiral body and a speed reduction differential driven by the tie-line spiral body. One side of the tie-line spiral body is provided with a small gear, the radiation direction of the spiral body is provided with a plurality of extension arms, the end point of the extension arms is connected with a ring body, and arced position on the ring body is used for placing a braking sheet. The speed reduction differential comprises an inner gear and a plurality of planetary gears which are engaged with the inner gear, the planetary gears are engaged with the small gear, and an extended sleeve element for brake friction is arranged on the inner gear. Band iron is circularly arranged at the outer side of the speed reduction differential, and one end of the band iron is provided with an executive component. The utility model has the advantages of light weight, adjustable speed, locking, etc.