Method for constructing an elevator system having increasing usable lifting height

Patent metadata

Field	Value
Publication number	US-11208296-B2
Application number	US-201816649740-A
Country	US
Kind code	B2
Filing date	Sep 19, 2018
Priority date	Oct 6, 2017
Publication date	Dec 28, 2021
Grant date	Dec 28, 2021

Abstract

A method for constructing at least two elevators in a building under construction adapts the usable lifting heights of the elevators to an increasing height of the building, wherein each of the elevators is arranged in an elevator shaft of the building associated with the elevator and includes a drive platform having an elevator drive machine that supports and drives an elevator car and a counterweight by a traction sheave and at least one flexible suspension device. In order to adapt the usable lifting heights, lifting operations are performed in which in alternation one of the drive platforms is raised to a higher level in the associated elevator shaft and is locked there. A single lifting platform is temporarily fastened above the particular drive platform to be lifted to apply a lifting force required to raise the drive platform, which force is transferred to supporting elements of the elevator shaft.

First claim

The invention claimed is:

1. A method for constructing elevators in a building under construction, wherein a usable lifting height of each of the elevators is adapted to an increasing height of the building, wherein each of the elevators is arranged in an associated elevator shaft of the building and includes a drive platform having an elevator drive machine that supports and drives an elevator car and a counterweight by a traction sheave and at least one flexible suspension means, and wherein, in order to adapt the usable lifting heights, lifting operations are performed in which in alternation the drive platforms of the elevators are each raised to a higher level in the associated elevator shaft and locked there, the method comprising the steps of:
for performing the lifting operations, positioning a single lifting platform alternately above one of the drive platforms of the elevators to be lifted and temporarily fastening the lifting platform in the associated elevator shaft; and
applying a lifting force from the lifting platform to the drive platform currently to be lifted, in order to raise the drive platform to the higher level, whereby the lifting force is transferred via the lifting platform to supporting elements of the associated elevator shaft.

2. The method according to claim 1 wherein the lifting platform has installed thereon a drive platform hoist with a drive platform traction means for raising the drive platforms, and including, for performing the lifting operations, coupling the drive platform traction means to the drive platform of the elevator to be lifted.

3. The method according to claim 1 wherein each of the drive platforms has installed thereon a drive platform hoist with a drive platform traction means for raising the drive platform, and including, for performing the lifting operations, coupling the drive platform traction means of the drive platform hoist of the drive platform to be lifted to the lifting platform positioned above the drive platform to be lifted.

4. The method according to claim 1 including transferring the lifting platform between adjacent ones of the associated elevator shafts for alternately raising the drive platforms wherein the lifting platform is suspended on a first lifting platform traction means driven by a first lifting platform hoist and on a second lifting platform traction means driven by a second lifting platform hoist, and performing the transfer of the lifting platform by a coordinated actuation of the first and second lifting platform hoists.

5. The method according to claim 4 including at least one shock-absorbing element formed as an elastic roller or an elastic buffer mounted on at least one side of the lifting platform for guiding the lifting platform between walls of the associated elevator shafts.

6. The method according to claim 4 including the steps of:
guiding the first lifting platform traction means from the first lifting platform hoist and fastening to a first suspension point, wherein the first suspension point is supported above the lifting platform in a region of a cross-sectional center of a first of the adjacent associated elevator shafts; and
guiding the second lifting platform traction means from the second lifting platform hoist and fastening to a second suspension point, wherein the second suspension point is supported above the lifting platform in a region of a cross-sectional center of a second of the adjacent associated elevator shafts.

7. The method according to claim 6 wherein the first and second suspension points are arranged on at least one protective platform installed in and supported by a region at upper ends of the adjacent associated elevator shafts, the at least one protective platform being vertically moveable during the construction of the building.

8. The method according to claim 6 including mounting at least one securing traction means in the building to function as fall protection for the lifting platform during the transferring, the at least one securing traction means being fastened to the lifting platform, guided from the lifting platform to a securing traction means deflection roller fastened in a region of one of the first and second suspension points, and guided back to the lifting platform and through a traction means safety catch attached to the lifting platform, the traction means safety catch blocking the at least one securing traction means and thus a lowering of the lifting platform when a speed, at which the at least one securing traction means moves through the traction means safety catch, exceeds a specific limit.

9. The method according to claim 6 wherein prior to performing one of the lifting operations, raising the lifting platform within one of the first and second associated elevator shafts using at least one of the first and second lifting platform hoists with the associated one of the first and second lifting platform traction means.

10. The method according to claim 4 including the steps of:
guiding the first lifting platform traction means from the first lifting platform hoist to wrap around a first lifting platform traction means deflection roller at a first suspension point and back and fastening the first lifting platform traction means to the lifting platform, wherein the first suspension point is supported above the lifting platform in a region of a cross-sectional center of a first elevator shaft of the adjacent associated elevator shafts; and
guiding the second lifting platform traction means from the second lifting platform hoist to wrap around a second lifting platform traction means deflection roller at a second suspension point and back and fastening the second lifting platform traction means to the lifting platform, wherein the second suspension point is supported above the lifting platform in a region of a cross-sectional center of a second elevator shaft of the adjacent associated elevator shafts.

11. The method according to claim 10 including the steps of:
raising the lifting platform from support points in the first elevator shaft by retracting the first lifting platform traction means into the first lifting platform hoist;
pivoting the lifting platform about the first suspension point as a pivot center approximately into the cross-sectional center of the second elevator shaft by retracting the second lifting platform traction means into the second lifting platform hoist; and
moving the lifting platform to an intended vertical position in the second elevator shaft by retracting or extending the second lifting platform traction means respectively into or from the second lifting platform hoist.

12. The method according to claim 11 including actuating the first and second lifting platform hoists alternately a predetermined number of times during the transfer to affect a straight-line sideways movement of the lifting platform.

13. The method according to claim 10 including the steps of:
raising the lifting platform vertically by retracting the first lifting platform traction means into the first lifting platform hoist, and during or after either keeping the second lifting platform traction means taut or tightening by retracting the second lifting platform means into the second lifting platform hoist;
pivoting the lifting platform about the second suspension point as a pivot center approximately into the cross-sectional center of the second elevator shaft by extending the first lifting platform traction means from the first lifting platform hoist; and
moving the lifting platform to an intended vertical position in the second elevator shaft by retracting or extending the second lifting platform traction means respect

Assignees

• Inventio Ag

Inventors

• Christen Lukas
• Bläsi Pascal
• Weber Stefan
• Bizzozero Gabriele

Classifications

• B66B5/284

  mounted on cars or counterweights · CPC title

• B66B5/005 Primary

  Safety of maintenance personnel · CPC title

• B66B19/00 Primary

  Mining-hoist operation · CPC title

• B66B19/002

  installing or exchanging guide rails (details of rails B66B7/02) · CPC title