| 摘要 |
An assembly (30) controls the amount of downward movement of a counterweight (24) within an elevator system (20). By limiting the downward movement of the counterweight (24), a desired overhead clearance above an elevator car (22) can be maintained. A disclosed example includes at least one safety device (80, 84, 86, 88) on top of the elevator car (22) to provide an indication for when a holding member (34) should allow a stop member of the assembly (30) to move into a position to limit ELEVATOR CAR the downward movement of the counterweight (24). In a disclosed example, the stop member (32) moves into an employed position by the force of gravity and is manually moveable back into a retracted position when it is not needed. A disclosed example includes a guide member (60) that facilitates controlling the position of the stop member (32) when it is in the employed position.
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