Arrangement for damping lateral sways of a rope fixed to an elevator unit and an elevator

摘要

An arrangement is provided for damping lateral sways of a rope fixed to a movable elevator unit, such as an elevator car in an elevator hoistway, the bottom end of which rope has an upward opening bottom loop. The arrangement includes a freely hanging damper supported on the top surface of the bottom loop, which damper includes a device for measuring acceleration and/or twisting of said rope.

主权项

1. An arrangement for damping lateral sways of a rope fixed to at least one elevator unit movable in a hoistway of an elevator including at least an elevator car, the elevator being suitable for transporting passengers and/or goods, the bottom end of the rope having an upward opening bottom loop, which arrangement comprises a freely hanging damper supported on a top surface of the bottom loop, wherein said damper comprises a device for measuring acceleration and/or twisting of said rope,
wherein acceleration and/or twisting values measured by said device for said rope are communicated to an elevator controller and if a certain pre-set acceleration threshold value is exceeded or if twisting is detected, an alarm is triggered and predetermined actions for damping sway of said rope are carried out.