| 摘要 |
<p>Provided is an elevator governor capable of achieving, with a simple configuration, an overspeed detection mechanism to which rotation dependence is added while preventing a decrease in reliability due to the generation of vibrations and noises and the wear of parts. For this purpose, the elevator governor includes: a sheave on which a rope moving in response to the movement of an ascending and descending body of an elevator is wound, and which changes the rotation speed in one direction in response to the ascent speed of the ascending and descending body and changes the rotation speed in the other direction in response to the descent speed of the ascending and descending body; a fly-weight which is provided in the sheave and increases and decreases an outward moving quantity in response to an increase and decrease in the rotation speed of the sheave; a detector which is provided in proximity to the fly-weight and performs overspeed detection of the sheave when the fly-weight has moved outward by a predetermined quantity; and a stopper which is provided in proximity to the fly-weight and prevents the fly-weight from moving outward more than or equal to the predetermined quantity while the sheave is rotating in a predetermined direction which is either of the two rotation directions.</p> |
