Autobalance roping and drive arrangement

B - Operations – Transporting – 66 – B

Patent

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Details

B66B 7/06 (2006.01)

Patent

CA 2503321

An autobalancing roping and drive arrangement for elevators which continuously balances the weight of an elevator cab and the weight of a counterweight such that the force necessary to move the cab from floor to floor is minimized. A weighing device connected to a drive sheave imparts a downward force on the drive sheave and creates a tension in a force section, causing traction contact between the drive sheave and the drive rope. The tension in the force section and the weight of the counterweight combine to create a downward force on one side of the suspension sheave section. This downward force balances the downward force created by the weight of the cab on the opposite side of the suspension sheave section. The tension in the force section automatically compensates for the difference in weight between the cab and the counterweight and thereby maintains the elevator in balance.

L'invention concerne un ensemble de traction et de cordages auto-équilibrant pour des ascenseurs qui équilibre continuellement le poids d'une cabine d'ascenseur et le poids d'un contrepoids, de sorte que la force nécessaire pour déplacer la cabine du sol est réduite. Un dispositif de pesage relié à une poulie de traction confère une force vers le bas à ladite poulie de traction et crée une tension dans une partie de force, ceci entraînant la mise en contact de la poulie de traction et du cordage de traction. La tension dans la partie force et le poids du contrepoids se combinent pour créer une force vers le bas créée par le poids de la cabine sur le côté opposé de la partie poulie de suspension. La tension dans la partie force compense automatiquement la différence de poids entre la cabine et le contrepoids, tout en maintenant l'ascenseur en équilibre.

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