Secondary installs structure of elevator additional

The utility model relates to a secondary installs structure of elevator additional, passageway including multi -storey building, parallel two race stair, elevator device and connection elevator device and multi -storey building, parallel two race stair are including first bench and the second bench of connecting the floor for the middle platform of connecting first bench and second bench, the elevator car that the elevator device includes the elevator well and moves in the elevator well, the passageway is including setting up the unit door hole on the stair outer wall of middle platform side, and middle platform at same height, and set up the time ladder platform between elevator well and stair outer wall, the room door of setting on the first well wall of elevator well, elevator well next -door neighbour stair outer wall just just sets up the second bench, the unit door hole is just right first bench setting, first well wall is just to the setting of stair ladder well, wait terraced platform just to first be