Automatic elevators mechanical system consists of:Automatic elevators lift mechanical system consists of inlet and outlet transmission mechanism,the car transmission mechanism inside the basket,Cab lifting mechanism, elevator hoistway door safety security agencies and liftingTelescopic belt conveyor motor holding brake body composition. Elevator entrance and exit transmission mechanism for the production line of products sent outside the elevator or lift to. The car inside the gondola transport mechanism for incoming or outgoing product cab. Cab lifting mechanism for lifting the elevator airport conveyor car or down the elevator car. Elevator hoistway door safety mechanism for lifting the elevator car during the closed elevator shaft entrance hall doors to prevent accidents. Lifting motor safety brake mechanism for clinging to lift the elevator car when the motor spindle stop motion to prevent the occurrence of sliding up and down the elevator car at the time of stop motion, to avoid accidents arising therefrom.