Elevator system comprising at least two elevator cars that can travel along a common rail section

Patent metadata

Field	Value
Publication number	US-2019367331-A1
Application number	US-201816485223-A
Country	US
Kind code	A1
Filing date	Jan 16, 2018
Priority date	Feb 10, 2017
Publication date	Dec 5, 2019
Grant date	—

Abstract

An elevator system may include at least two elevator cars that are movable along a common rail section on a wall. The common rail section may comprise a plurality of rail segments arranged consecutively along a direction of travel of the elevator cars. Furthermore, the rail section may comprise at least one first rotary segment. A first rail segment of the plurality of rail segments may be arranged adjacent to the first rotary segment. The first rail segment may be fixed to the wall via a first fixed bearing such that the first rail segment is fixed in all three directions in space with respect to the wall. The first fixed bearing may be positioned at an end of the first rail segment that faces the first rotary segment.

First claim

1 .- 15 . (canceled)

16 . An elevator system comprising:
a first elevator car; a second elevator car; and a rail section disposed on a wall, wherein the first and second elevator cars are movable along the rail section, wherein the rail section comprises:
rail segments that are disposed consecutively in a direction of travel of the first and second elevator cars, wherein a first rail segment of the rail segments is fixed to the wall via a first fixed bearing, and
a rotary segment adjacent to the first rail segment, wherein the first fixed bearing is disposed at an end of the first rail segment that faces the first rotary segment.

17 . The elevator system of claim 16 wherein a second rail segment of the rail segments is adjacent to the first rail segment, the second rail segment being fixed to the wall via a second fixed bearing, wherein the first rail segment is spaced apart from the second rail segment to permit the first rail segment to thermally expand towards the second rail segment.

18 . The elevator system of claim 17 wherein the second fixed bearing is disposed at an end of the second rail segment that faces away from the first rail segment so as to permit the first rail segment and the second rail segment to thermally expand toward each other.

19 . The elevator system of claim 18 wherein the rail section comprises a second rotary segment, wherein the second rail segment is adjacent to the second rotary segment, wherein the first rail segment and the second rail segment are disposed between the first rotary segment and the second rotary segment, wherein the second fixed bearing is disposed at an end of the second rail segment that faces the second rotary segment.

20 . The elevator system of claim 17 wherein a plurality of rail segments are disposed between the first rail segment and the second rail segment.

21 . The elevator system of claim 16 wherein at least one of the first rail segment or the second rail segment comprises a plurality of rail elements that are disposed consecutively along the direction of travel.

22 . The elevator system of claim 16 wherein the first and second elevator cars each comprise a braking device that acts on the rail segment with which the respective elevator car is engaged when the braking device is activated, wherein an acceleration force that occurs during braking of the respective elevator car is introduced into the rail segment with which the respective elevator car is engaged.

23 . The elevator system of claim 16 comprising a linear drive for driving the first and second elevator cars, the linear drive comprising:
primary parts that are connected to the rail segments, and
secondary parts that are connected to the first and second elevator cars, wherein an acceleration force that occurs during acceleration or braking of the first or second elevator car by way of the linear drive acts on the respective rail segment with which the first or second elevator car is engaged during the acceleration or the braking.

24 . The elevator system of claim 23 wherein the first and second elevator cars each comprise a braking device that acts on the rail segment with which the respective elevator car is engaged when the braking device is activated, wherein an acceleration force that occurs during braking of the respective elevator car is introduced into the rail segment with which the respective elevator car is engaged, wherein the first and second elevator cars are engaged with the rail segments such that a weight force of each of the first and second elevator cars acts via the linear drive or via the braking device on the respective rail segment with which the first or second elevator car is engaged.

25 . An elevator system comprising:
a first elevator car; a second elevator car; a rail section along which the first and second elevator cars are movable, wherein the rail section comprises rail segments that are disposed consecutively along a direction of travel of the first and second elevator cars; and a control system for controlling movement of the first and second elevator cars, the control system configured to control the first and second elevator cars such that a sum of forces attributable to the first and second elevator cars, when the first and second elevator cars are simultaneously engaged with one of the rail segments and when the sum of forces acts on the one of the rail segments, is smaller than a predetermined threshold value.

26 . The elevator system of claim 25 comprising a sensor for determining the loading of the first and second elevator cars, wherein the control system is configured to determine maximum forces of the first and second elevator cars via a sensor signal of the sensor.

27 . The elevator system of claim 25 wherein the predetermined threshold value is 2% less than a maximal permitted load of a fixed bearing of a rail element.

28 . The elevator system of claim 25 wherein during normal operation of the elevator system the control system is configured to control the first and second elevator cars such that only one of the first or second elevator cars travels on each of the rail segments at a time.

29 . The elevator system of claim 28 wherein a maximum force attributable to the first or second elevator car and exerted on one of the rail segments is less than the predetermined threshold value.

Assignees

• Thyssenkrupp Elevator Ag
• Thyssenkrupp Ag

Inventors

• Dietze Ronald
• Burutjis Petros
• Kuczera Thomas
• Madera Martin

Classifications

• B66B7/024 Primary

  Lateral supports · CPC title

• B66B7/02

  Guideways; Guides (arrangements in mine shafts E21D7/02) · CPC title

• B66B9/003 Primary

  for lateral transfer of car or frame, e.g. between vertical hoistways or to/from a parking position · CPC title

• B66B11/0407

  actuated by an electrical linear motor (in the counterweight B66B17/12) · CPC title

• B66B7/023

  Mounting means therefor · CPC title