Elevator with compensation rope

Patent metadata

Field	Value
Publication number	US-9695012-B2
Application number	US-201314098284-A
Country	US
Kind code	B2
Filing date	Dec 5, 2013
Priority date	Dec 6, 2012
Publication date	Jul 4, 2017
Grant date	Jul 4, 2017

Abstract

An elevator includes at least one elevator car and a counterweight which are at least partly suspended on hoisting ropes and a drive machine driving a traction sheave engaging the hoisting ropes for moving the elevator car along guide rails in an elevator shaft, which elevator further includes a compensation rope. The compensation rope is led upwards to an upper part of the elevator shaft and from there aside to a balancing area located aside of the travel paths of the car and counterweight. This solution is particularly adapted for high travel elevators facing horizontal forces during operation as e.g. ship elevators. Collision of compensation ropes are avoided in the area below the car and counterweight paths which could affect the elevator safety when subjected to high horizontal forces, e.g. during rough sea.

First claim

The invention claimed is:

1. An elevator comprising:
a car and a counterweight which are at least partly suspended on hoisting ropes and a drive machine driving a traction sheave engaging the hoisting ropes for moving the car in an elevator shaft; and
a compensation rope, wherein the compensation rope is led upwards to an upper part of the elevator shaft and from there aside to a balancing area located aside of the travel paths of the car and counterweight, wherein a first part of the compensation rope connected with one of the car and counterweight and a second part of the compensation rope connected with the other of the car and counterweight are led upwards to an upper part of the elevator shaft where they are guided over a first upper diverting pulley and a second upper diverting pulley, respectively,
wherein the first part of the compensation rope and the second part of the compensation rope are guided via the corresponding first upper diverting pulley and the second upper diverting pulley to the balancing area and in the balancing area downwards to a third balancing part of the compensation rope connecting the first part of the compensation rope and the second part of the compensation rope.

2. The elevator according to claim 1 , wherein the balancing area is arranged in a separated part of the elevator shaft or in a separate shaft.

3. The elevator according to claim 2 , wherein the first part of the compensation rope is led directly upwards from the one of the car and counterweight to the first diverting pulley.

4. The elevator according to claim 2 , wherein the second part of the compensation rope is led directly upwards from the other of the car and counterweight to the second upper diverting pulley.

5. The elevator according to claim 2 , wherein the first part of the compensation rope is led downwards from the one of the car and counterweight to a first lower diverting pulley before being led upwards to the first upper diverting pulley.

6. The elevator according to claim 2 , wherein the second part of the compensation rope is led downwards from the other of the car or counterweight to a second lower diverting pulley before being led upwards to the second upper diverting pulley.

7. The elevator according to claim 1 , wherein the first part of the compensation rope is led directly upwards from the one of the car and counterweight to the first upper diverting pulley.

8. The elevator according to claim 7 , wherein the second part of the compensation rope is led directly upwards from the other of the car and counterweight to the second upper diverting pulley.

9. The elevator according to claim 1 , wherein the second part of the compensation rope is led directly upwards from the other of the car and counterweight to the second upper diverting pulley.

10. The elevator according to claim 9 , wherein the first part of the compensation rope is led downwards from the one of the car and counterweight to a first lower diverting pulley before being led upwards to the first upper diverting pulley.

11. The elevator according to claim 1 , wherein the first part of the compensation rope is led downwards from the one of the car and counterweight to a first lower diverting pulley before being led upwards to the first upper diverting pulley.

12. The elevator according to claim 11 , wherein the second part of the compensation rope is led downwards from the other of the car and counterweight to a second lower diverting pulley before being led upwards to the second upper diverting pulley.

13. The elevator according to claim 1 , wherein the second part of the compensation rope is led downwards from the other of the car or counterweight to a second lower diverting pulley before being led upwards to the second upper diverting pulley.

14. The elevator according to claim 1 , wherein the third balancing part of the compensation rope is a compensation chain.

15. The elevator according to claim 1 , wherein a vertical guide is provided for the compensation rope in the balancing area.

16. The elevator according to claim 15 wherein the vertical guide extends over at least a major part of a vertical run of the compensation rope in the balancing area.

17. The elevator according to claim 1 , wherein, either for the first part of the compensation rope or the second part of the compensation rope, a third upper diverting pulley is provided.

18. The elevator according to claim 1 , wherein an auxiliary diverting pulley for the hoisting ropes is provided adjacent to the traction sheave.

19. The elevator according to claim 1 , wherein a tensioner for the compensation rope is provided in the balancing area.

Assignees

• Kone Corp

Inventors

• De Jong Johannes
• Perälä Jussi

Classifications

• B66B11/009

  with separate traction and suspension ropes · CPC title

• B66B7/10 Primary

  for equalising rope or cable tension · CPC title

• B66B7/068 Primary

  Cable weight compensating devices · CPC title