| 摘要 |
In a braking device for an elevator, a sheave around which main ropes for suspending a car and a counterweight are looped is provided with a pressing device. A braking disc provided with a plurality of engaging portions is pressed against the sheave by the pressing device. An engaging device has a movable portion that can be displaced between an engagement position corresponding to engagement with the engaging portions and a release position corresponding to release from the engaging portions. The braking disc can rotate together with the sheave when the movable portion is at the release position. The braking disc is stopped to brake rotation of the sheave when the movable portion is at the engagement position.
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