| 摘要 |
<p>An elevator device wherein hoists and ropes have extended service life. In speed reduction control in an emergency braking operation, a speed reduction command value-generating unit (40) reads rotational speed detection values (braking condition signals) of drive sheaves (11, 21), said rotational speed detection values changing due to the respective conditions of reductions in the speed of hoists (10, 20) or due to respective braking forces applied to the hoists (10, 20). Also, the speed reduction command value-generating unit (40) changes the braking forces of the brakes (13, 23) to perform speed reduction control in order that the braking forces of the brakes (13, 23) are equalized on the basis of the rotational speed detection values of the drive sheaves (11, 21) inputted from speed detectors (14, 24).</p> |
