| 摘要 |
An elevator system (20) includes multiple elevator cars (22, 32) within a hoistway (26). Counterweights (24, 34) are associated with the respective elevator cars (22, 32) by load bearing members (40, 50). In some examples, different roping ratios are used for the load bearing members (40, 50). In some examples, the lengths of the load bearing members (40, 50) are selected to allow contact between the counterweights (24, 34) within the hoistway (26) and prevent contact between the elevator cars (22, 32). The difference in car and counterweight separation distances is greater than a stroke of a counterweight buffer plus an expected dynamic jump of the elevator cars. A disclosed example includes passages (80) through a portion of at least one of the elevator cars (22) for accommodating the load bearing member (50) of another elevator car (32) located beneath the elevator car (22) with the passages (80).
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