Elevator system including a 4:1 roping arrangement

摘要

An exemplary elevator system includes an elevator car. A plurality of belts are situated relative to the elevator car such that movement of the belts for causing movement of the elevator car is approximately four times a corresponding movement of the elevator car. First, second, third and fourth sheaves are supported for vertical movement with the elevator car and rotational movement relative to the elevator car. Each belt has a portion extending across the elevator car between the first and second sheaves that is vertically aligned with another portion of the same belt extending across the elevator car between the third and fourth sheaves.

主权项

1. An elevator system, comprising:
an elevator car; a plurality of belts situated relative to the elevator car such that movement of the belts for causing movement of the elevator car is approximately four times a corresponding movement of the elevator car; a first sheave, a second sheave, a third sheave and a fourth sheave all supported for vertical movement with the elevator car and rotational movement relative to the elevator car; and wherein each belt has a portion extending across the elevator car between the first and second sheaves that is vertically aligned with another portion of the same belt extending across the elevator car between the third and fourth sheaves.