Double-decker elevator with adjustable inter-car spacing

Patent metadata

Field	Value
Publication number	US-9643818-B2
Application number	US-201314650943-A
Country	US
Kind code	B2
Filing date	Nov 29, 2013
Priority date	Dec 10, 2012
Publication date	May 9, 2017
Grant date	May 9, 2017

Abstract

An elevator installation has an elevator car carrier that can be displaced in a travel space, a first elevator car arranged on the carrier in an adjustable manner, and a second elevator car arranged on the carrier. A drive unit on the carrier drives a traction device to adjust the first elevator car relative to the carrier. The traction device forms a closed loop and is guided over a drive roller and at least one guide roller, which rollers are arranged on the carrier. The guide roller is displaceable on the carrier to set tensioning of the traction device.

First claim

The invention claimed is:

1. An elevator installation having an elevator car carrier movable in a travel space, a first elevator car adjustably arranged at the elevator car carrier and a second elevator car arranged at the elevator car carrier comprising:
a drive unit arranged at the elevator car carrier;
a drive roller rotated by the drive unit;
a guide roller arranged at the elevator car carrier and being displaceable relative to the elevator carrier unit; and
a traction device guided by the drive roller and the guide roller and suspending the first elevator car and the second elevator car, wherein at least the first elevator car is adjustable relative to the elevator car carrier by the drive unit driving the traction device through the drive roller, the traction device forming a closed loop, and wherein a tension of the traction device is settable by displacement of the guide roller relative to the elevator car carrier; wherein the traction device travels directly between the drive roller and the guide roller, the first elevator car is suspended on a first portion of the traction device and the second elevator car is suspended on a second portion of the traction device, and wherein the first portion and the second portion travel in opposite direction from each other.

2. The elevator installation according to claim 1 wherein the second elevator car is adjustably arranged at the elevator car carrier and is adjustable relative to the elevator car carrier by the drive unit driving the traction device through the drive roller, and wherein the first elevator car and the second elevator car are adjustable oppositely to one another when the first elevator car and the second elevator car are adjusted relative to the elevator car carrier.

3. The elevator installation according to claim 1 wherein the traction device is formed as an endless loop.

4. The elevator installation according to claim 1 wherein opposite ends of the traction device are fixed together in a holding element.

5. The elevator installation according to claim 1 wherein the first elevator car is connected with the traction device by a first holding element.

6. The elevator installation according to claim 5 wherein a suspension force of the first elevator car at the traction device is introduced in vertical alignment with the traction device at the first holding element.

7. The elevator installation according to claim 5 wherein the second elevator car is connected with the traction device by a second holding element.

8. The elevator installation according to claim 7 wherein a suspension force of the second elevator car at the traction device is introduced in vertical alignment with the traction device at the second holding element.

9. The elevator installation according to claim 1 wherein the traction device is formed as a belt having a first side and a second side remote from the first side, and wherein the first side is a front side that contacts the drive roller of the drive unit and the guide roller and the second side is a free rear side.

10. The elevator installation according to claim 9 wherein the belt has a toothing formed at the front side.

11. The elevator installation according to claim 9 wherein the belt has at least one longitudinal rib with a V-shaped profile formed at the front side.

12. The elevator installation according to claim 9 wherein the belt is formed as a flat belt.

Assignees

• Inventio Ag
• Schindler Aufzüge Ag

Inventors

• Sen Fuat

Classifications

• B66B11/022 Primary

  with changeable inter-deck distances · CPC title

• B66B7/062

  Belts · CPC title

• B66B1/425

  adapted for multi-deck cars in a single car frame · CPC title