Lift installation having a compensating device, so that a first roller is largely relieved of loading when the lift car is at rest
AssigneesThyssenkrupp Elevator AG, thyssenkrupp AG
InventorsFriedrich Löser, Markus Jetter
Life of this patent
Estimating the term…
Abstract
The disclosure relates to a lift installation having a lift car which can be moved along a guide rail. The lift installation here comprises at least a first pair of rollers and a second pair of rollers. The guide rail runs between the two rollers of the first pair of rollers and between the two rollers of the second pair of rollers. The lift installation also has an apparatus for subjecting the lift car to a retaining force, wherein there is a horizontal offset between the point at which the retaining force takes effect and the center of gravity of the lift car, and therefore the lift car is subjected to a first torque.
Claims20
A lift installation having a lift car which can be moved along a guide rail, the lift installation comprising:
- a first pair of rollers comprising a first and second roller receiving the guide rail therebetween;
- a second pair of rollers comprising a first and second roller receiving the guide rail therebetween, wherein the lift installation has an apparatus for subjecting the lift car to a retaining force, wherein there is a horizontal offset between a point at which the retaining force takes effect and a center of gravity of the lift car, and therefore the lift car is subjected to a first torque;
- and
- a first compensating device so that, when the lift car is at rest, the guide rail is subjected to sufficient force to give rise to a second torque, which at least partially compensates for the first torque, so that the first roller of the first pair of rollers is at least partially relieved of loading when the lift car is at rest,
- wherein the first compensating device includes an actuator configured to move a contact element into and out of contact with the guide rail, wherein a travel distance of the actuator is selectively adjustable by a control unit such that the first compensating device is configured to selectively (i) relieve the entire loading on the first roller of the first pair of rollers, or (ii) partially relieve the loading on the first roller of the first pair of rollers.
A lift installation comprising:
- a guide rail;
- a lift car having a load bearing frame;
- a roller housing coupled to the load bearing frame;
- a first pair of rollers disposed within the roller housing and comprising first and second rollers receiving the guide rail therebetween;
- a second pair of rollers disposed within the roller housing and comprising first and second rollers receiving the guide rail therebetween;
- an elastic connection element individually coupling each of the first and second rollers of both the first and second pair of rollers to a mounting of the roller housing, each elastic connection element pre-tensioned to secure one of the first and second rollers of the first and second pair of rollers against the guide rail;
- a first compensating device coupled to the roller housing and configured to selectively engage the guide rail to establish a first torque on the lift car to compensate for a second torque acting on the lift car when the lift car is at rest, such that loading on the first roller of the first pair of rollers is relieved;
- a second compensating device coupled to the roller housing and configured to selectively engage the guide rail to further establish the first torque such that loading on the second roller of the second pair of rollers is relieved.
A lift installation comprising:
- a guide rail;
- a lift car movable along the guide rail;
- a first pair of rollers comprising a first and second roller receiving the guide rail therebetween;
- a second pair of rollers comprising a first and second roller receiving the guide rail therebetween;
- an apparatus for subjecting the lift car to a retaining force, wherein there is a horizontal offset between a point at which the retaining force takes effect and a center of gravity of the lift car, and therefore the lift car is subjected to a first torque;
- and
- a first compensating device having an actuator configured to move a contact element into selective contact with the guide rail, to thereby produce a second torque when the lift car is at rest, and at least partially relieve loading on the first roller of the first pair of rollers,
- wherein a travel distance of the actuator is selectively adjustable by a control unit such that a magnitude of the second torque produced by the compensation device is variable.
Dependencies are inferred from the claim text.