PASSENGER LIFT FOR MULTISTORY BUILDINGS Russian patent published in 2014 - IPC B66B9/00 B66B11/08 

FIELD: construction.

SUBSTANCE: passenger lift for multistory buildings comprises a friction pulley kinematically connected with an electric motor, enveloped with a traction steep wire rope with a cabin fixed on one of its ends for accommodation of people, while making the rope-guiding pulley as multi-stream with rope reeving on it with the help of an additional diverting pulley. At the second end of the traction rope there is the second cabin for accommodation of people, dimensions and weight of which are equal to dimensions and weight of the cabin fixed on the first end of the rope. The section of the traction rope with the second cabin fixed on its end is placed as capable of enveloping the diverting block by the rope, and the diverting block is installed with displacement away from the driving friction pulley. The traction factor of the driving friction pulley is determined in accordance with the following formula: e^fα≥1+G_p/G_c, where e - base of the natural logarithms, f - coefficient of friction of the traction rope against the friction pulley, G_p - design load from weight of people in the cabin, G_c - cabin weight.

EFFECT: considerable increase of lift efficiency during its operation, especially when the lift is installed in a multistory building, reduced capital and operating costs due to reduced required number of passenger lifts within a building.

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