Recyclable escape descent control device for tall building

The invention discloses a recyclable escape descent control device for a tall building. The recyclable escape descent control device comprises a transmission mechanism, a heat dissipation mechanism, a brake mechanism and a steel wire rope take-up and pay-off mechanism. A steel wire rope pulls a roller to rotate, a sun wheel meshed with a planet wheel is driven through the planet wheel to rotate, meanwhile, fan blades and a ratchet wheel rotate to drive a friction wheel to rotate, under the action of centrifugal force, friction resistance torque is generated by friction blocks and the inner wall of a box plate, and therefore the objects of heat dissipation, speed reduction and braking are achieved; after an escaper safely lands, reverse motion take-up is performed on the rope through the take-up and pay-off mechanism, and finally the rope is evenly wound on the roller to be get ready for using next time. The recyclable escape descent control device has the advantages of being high in heat dissipation capacity,