Method for constructing an elevator system having an adaptable usable lifting height

Patent metadata

Field	Value
Publication number	US-11034550-B2
Application number	US-201716310588-A
Country	US
Kind code	B2
Filing date	Jun 29, 2017
Priority date	Jun 30, 2016
Publication date	Jun 15, 2021
Grant date	Jun 15, 2021

Abstract

A method for constructing an elevator system in a building includes performing at least one lifting operation to adapt a usable lifting height of the elevator system to an increasing height of the building. A drive platform supporting an elevator drive machine and, by a flexible support, an elevator car and a counterweight is raised during the lifting operation. A difference between an elevator-car-side support weight and a counterweight-side support weight is substantially compensated by a compensating tension device guided from a bottom side of the elevator car to a bottom side of the counterweight by a deflecting device including two roller assemblies having deflecting rollers forming a compensating tension loop. A distance between the roller assemblies is reduced before and/or during the lifting operation such that an amount of the compensating tension device required for the performance of the lifting operation is released from the compensating tension loop.

First claim

The invention claimed is:

1. A method for constructing an elevator system in a building, the elevator system including an elevator drive machine, an elevator car, a counterweight, and a flexible supporting means, the method including performing at least one lifting operation to adapt a usable lifting height of the elevator system to an increasing height of the building, the at least one lifting operation raising a drive platform that supports the elevator drive machine and, by the supporting means, supports the elevator car and the counterweight, and the method further including substantially compensating a difference between an elevator-car-side supporting-means weight and a counterweight-side supporting-means weight of the supporting means by a compensating tension means that is guided from a bottom side of the elevator car to a bottom side of the counterweight by a deflecting device, the method comprising the further steps of:
guiding the compensating means with the deflecting device, the deflecting device including two roller assemblies each having at least one deflecting roller, wherein the compensating tension means is guided by the at least one deflecting roller of each of the two roller assemblies to form a compensating tension means loop in which loop a defined amount of the compensating tension means is stored; and
reducing a distance between the two roller assemblies at least one of before and during the at least one lifting operation such that an amount of the compensating tension means required for performance of the at least one lifting operation is released from the compensating tension means loop.

2. The method according to claim 1 wherein one of the roller assemblies is a stationary roller assembly having at least one stationary deflecting roller as the at least one deflecting roller and another of the roller assemblies is a displaceable roller assembly having at least one displaceable deflecting roller as the at least one deflecting roller.

3. The method according to claim 1 wherein the defined amount of the compensating tension means stored in the compensating tension means loop is formed by a portion of the compensating tension means guided from the bottom side of the elevator car via the deflecting device to the bottom side of the counterweight.

4. The method according to claim 1 including fixing at least indirectly a first fastening point of the compensating tension means to the elevator car and fixing at least indirectly a second fastening point of the compensating tension means to the counterweight, or guiding the compensating tension means around further deflecting rollers connected to the elevator car and to the counterweight.

5. The method according claim 1 including fixing the compensating tension means by fixing devices to the elevator car and to the counterweight or fixing the compensating tension means by stationary fixing devices to the elevator system, wherein the compensating tension means remains fixed by the fixing devices or the stationary fixing devices before, during and after the at least one lifting operation.

6. The method according to claim 1 including guiding the compensating tension means with a single turn along the compensating tension means loop.

7. The method according to claim 1 including guiding the compensating tension means with more than one turn along the compensating tension means loop, or guiding the compensating tension means with a multiple reeving along the compensating tension means loop.

8. The method according to claim 1 including displacing at least one of the roller assemblies that forms the compensating tension means loop with an electrically driven displacement device to reduce or increase the distance between the two roller assemblies.

9. The method according to claim 1 displacing the roller assemblies that form the compensating tension means loop in opposite directions with a displacement device.

10. The method according to claim 1 including displacing at least one of the roller assemblies that forms the compensating tension means loop with a displacement device approximately synchronously with the raising of the drive platform during the at least one lifting operation.

11. The method according to claim 1 including arranging the compensating tension means loop at least largely in an elevator shaft associated with the elevator system, wherein at least one of the roller assemblies of the deflecting device is displaceable substantially in a vertical displacement direction.

12. The method according to claim 1 wherein the elevator system is associated with an elevator shaft and including arranging the compensating tension means loop at least in part in a further elevator shaft.

13. The method according to claim 1 wherein the elevator system is associated with an elevator shaft and including arranging the compensating tension means loop at least in part in a space not associated with the elevator shaft.

14. The method according to claim 1 including displacing at least one of the roller assemblies of the deflecting device in a substantially horizontal displacement direction.

15. The method according to claim 1 including after a last lifting operation removing elements of the deflecting device used to form the compensating tension means loop and converting the deflecting device into a deflecting device without the compensating tension means loop.

Assignees

• Inventio Ag

Inventors

• Christen Lukas
• Bläsi Pascal

Classifications

• B66B19/02 Primary

  Installing or exchanging ropes or cables · CPC title

• B66B7/068 Primary

  Cable weight compensating devices · CPC title

• B66B19/00

  Mining-hoist operation · CPC title