Elevator rope slippage detecting device, and elevator apparatus

B - Operations – Transporting – 66 – B

Patent

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Details

B66B 5/02 (2006.01)

Patent

CA 2541365

In an elevator apparatus, a pulley is provided in a hoistway. A rope that moves together with the movement of a car is wound around the pulley. Further, the pulley is provided with a pulley sensor for generating a signal according to the rotation of the pulley. The car is provided with a car speed sensor for directly detecting the speed of the car. A control panel is provided with: a first speed detecting portion for obtaining the speed of the car based on information from the pulley sensor; a second car speed detecting portion for obtaining the speed of the car based on information from the car speed sensor; and a determination portion for determining the presence/absence of slippage between the rope and the pulley by comparing the speeds of the car as respectively obtained by the first and second speed detecting portions.

L'invention concerne un système d'ascenseur comprenant une poulie positionnée dans le puits de l'ascenseur. Un câble est entraîné autour de la poulie de façon à se déplacer en même temps que la cabine. La poulie comprend un capteur générant un signal dépendant de la rotation de la poulie. La cabine est équipée d'un capteur de vitesse détectant directement la vitesse de la cabine. Un panneau de commande comprend une première section de détection de vitesse déterminant la vitesse de la cabine à partir des informations reçues du capteur de la poulie, une seconde section de détection de vitesse déterminant la vitesse de la cabine à partir des informations reçues du capteur de vitesse de la cabine, et une section d'évaluation destinée à évaluer si un glissement se produit entre le câble et la poulie à partir des informations de vitesse de la cabine respectivement déterminées au niveau de la première section et de la seconde section de détection de vitesse.

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