ELEVATOR

摘要

An elevator includes a first elevator unit vertically movable in a hoistway, and a second elevator unit vertically movable in a hoistway. At least one of said elevator units is an elevator car. One or more belt-shaped hoisting ropes interconnects the first elevator unit and the second elevator unit. A drive wheel is provided for moving said one or more belt-shaped hoisting ropes. Each of the belt-shaped hoisting ropes passes around the drive wheel and includes consecutively a first rope section extending between the drive wheel and the first elevator unit, and a second rope section extending between the drive wheel and the second elevator unit. The elevator further includes non-driven cambered diverting wheels, each said first rope section being arranged to pass around a first cambered diverting wheel, in particular resting against a cambered circumferential surface area thereof, and each the second rope section being arranged to pass around a second cambered diverting wheel, in particular resting against a cambered circumferential surface area thereof. A rope monitoring arrangement is configured to monitor displacement of each of the first rope sections in the axial direction of the wheels away from a predefined zone, and displacement of each of the second rope sections in the axial direction of the wheels away from a predefined zone. The elevator is configured to stop the rotation of the drive wheel when one or more of the first and second rope sections is displaced in the axial direction of the wheels away from a predefined zone.

主权项

1. An elevator, comprising:
a first elevator unit vertically movable in a hoistway, and a second elevator unit vertically movable in a hoistway, at least one of said elevator units being an elevator car; one or more belt-shaped hoisting ropes interconnecting the first elevator unit and the second elevator unit; and rope wheels including a drive wheel for moving said one or more belt-shaped hoisting ropes wherein each of said one or more belt-shaped hoisting ropes passes around the drive wheel and comprises consecutively a first rope section extending between the drive wheel and the first elevator unit, and a second rope section extending between the drive wheel and the second elevator unit, wherein the rope wheels further include one or more non-driven cambered diverting wheels, each said first rope section being arranged to pass around a first non-driven cambered diverting wheel, and wherein the elevator further comprises: a rope monitoring arrangement configured to monitor displacement of each of said first rope sections in the axial direction of the rope wheels away from a predefined zone, and displacement of each of the second rope sections in the axial direction of the rope wheels away from a predefined zone, and wherein the elevator is configured to stop rotation of the drive wheel when one or more of the first and second rope sections is displaced in the axial direction of the rope wheels away from a predefined zone.