Elevator arrangement and method

Patent metadata

Field	Value
Publication number	US-10227212-B2
Application number	US-201414264781-A
Country	US
Kind code	B2
Filing date	Apr 29, 2014
Priority date	Nov 28, 2011
Publication date	Mar 12, 2019
Grant date	Mar 12, 2019

Abstract

An elevator arrangement, includes an elevator hoistway, an elevator car, which is arranged to travel in the elevator hoistway, a counterweight, a movable supporting platform above the elevator car, suspension roping, which is connected to the elevator car and to the counterweight, and supports them while suspended from the supporting platform, and a hoisting machine, which includes a device configured to move the roping. The elevator arrangement also includes a hoisting machine and traction roping that are separate from the supporting platform, which hoisting machine is in power transmission connection via the traction roping with the elevator car and with the counterweight.

First claim

The invention claimed is:

1. An elevator arrangement, comprising:
an elevator hoistway;
an elevator car, which is arranged to travel in the elevator hoistway;
a counterweight;
guiderails;
a movable supporting platform above the elevator car, the movable supporting platform comprising at least one diverting pulley and two supports, each support being attached to one of the guiderails;
a suspension roping comprising a suspension roping first end connected to a first rope supply storage that is disposed on the elevator car and a suspension roping second end connected to the counterweight, the suspension roping supports the elevator car and the counterweight while suspended from the movable supporting platform;
a traction roping comprising a traction roping first end connected to a second rope supply storage disposed outside the elevator hoistway and a traction roping second end fixedly connected to a bottom of the elevator hoistway;
a hoisting machine and the traction roping are separate from the movable supporting platform, which hoisting machine is in power transmission connection via the traction roping with the elevator car and with the counterweight;
a first clamp configured to clamp the suspension roping, the first clamp is located on the suspension roping between the at least one diverting pulley and the first rope supply storage; and
a second clamp configured to clamp the traction roping, the second clamp is located on the traction roping between the hoisting machine and the second rope supply storage,
wherein the movable supporting platform is lifted taking vertical support force from a support arrangement that is above the supporting platform and supported in its position in the elevator hoistway, and
wherein the support arrangement is fixed to top ends of the guide rails.

2. The elevator arrangement according to claim 1 , wherein the hoisting machine is disposed in a proximity of a bottom end of the path of movement of the elevator car.

3. The elevator arrangement according to claim 2 , wherein the hoisting machine is arranged to exert via the traction roping a downward pulling force on the elevator car or on the counterweight.

4. The elevator arrangement according to claim 1 , wherein the hoisting machine is arranged to exert via the traction roping a downward pulling force on the elevator car or on the counterweight.

5. The elevator arrangement according to claim 1 , wherein the traction roping is suspended to hang from the elevator car and from the counterweight.

6. The elevator arrangement according to claim 1 , further comprising a device configured to lift the movable supporting platform higher up in the elevator hoistway.

7. The elevator arrangement according to claim 1 , wherein when lifting the movable supporting platform, a vertical support force is arranged to be taken from the guide rails of the elevator, and/or after the lifting of the movable supporting platform, the movable supporting platform is arranged to be supported in the elevator hoistway by locking the movable supporting platform in the vertical direction to be supported by the guide rails.

8. The elevator arrangement according to claim 1 , wherein the supports vertically support the movable supporting platform in the elevator hoistway, the supports being configured to vertically support the movable supporting platform being shiftable between a state supporting the moveable supporting platform in a vertical direction and a state not supporting the movable supporting platform in the vertical direction, in which state supporting the movable supporting platform, the supports rest on the elevator hoistway or on a structure installed in the elevator hoistway, and in which state not supporting the movable supporting platform, the supports do not hamper the vertical transfer of the movable supporting platform in the hoistway.

9. The elevator arrangement according to claim 1 , wherein the suspension roping includes ropes that are different to the traction roping in their material and/or in their cross-section.

10. The elevator arrangement according to claim 1 , wherein the suspension roping includes one or more ropes of essentially round cross-sectional shape, and the traction roping comprises one or more belts.

11. The elevator arrangement according to claim 1 , wherein the suspension roping includes one or more ropes, a longitudinal power transmission capability of which ropes is based at least essentially on non-metallic fibers in the longitudinal direction of said suspension roping.

12. The elevator arrangement according claim 1 , wherein the suspension roping includes one or more ropes, a longitudinal power transmission capability of which ropes is based at least essentially on metal wires in the longitudinal direction of said suspension roping.

13. A method for fabricating an elevator, comprising the steps of:
installing guiderails, an elevator car, a counterweight, and a movable supporting platform in an elevator hoistway, the movable supporting platform comprising at least one diverting pulley and two supports, each support being attached to one of the guiderails;
installing suspension roping to connect the elevator car and the counterweight, and to support them while suspended by the movable supporting platform supported above the elevator car, the suspension roping comprises a suspension roping first end connected to a first rope supply storage disposed on the elevator car and a suspension roping second end connected to the counterweight;
installing a hoisting machine and traction roping separate from the movable supporting platform, such that the hoisting machine is in power transmission connection via the traction roping with the elevator car and with the counterweight, the traction roping comprises a traction roping first end connected to a second rope supply storage disposed outside the elevator hoistway and a traction roping second end fixedly connected to a bottom of the elevator hoistway;
installing a first clamp at the suspension roping between the at least one diverting pulley and the first rope supply storage;
installing a second clamp at the traction roping between the hoisting machine and the second rope supply storage;
taking the elevator car into use to serve passengers and/or to transport goods;
removing the elevator car from said use;
changing the service range of the elevator car to reach higher up in the elevator hoistway by lifting the movable supporting platform higher up in the elevator hoistway; and
taking the elevator car back into said use,
wherein the movable support platform is lifted via a support arrangement fixed to top ends of the guide rails.

14. The method according to claim 13 , wherein the elevator car and the counterweight are moved during said use by exerting with the hoisting machine via the traction roping a vertical pulling force on the elevator car or on the counterweight, thus acting on a force imbalance between them, thereby controlling their movement.

15. The method according to claim 13 , wherein the service range of the elevator car is changed to reach higher up in the elevator hoistway by shifting the movable supporting platform higher up in the elevator hoistway, and by supplying more rope from the first rope supply storage and the second rope supply storage.

16. The method according to claim 13 , wherein the movable supporting platform is lifted taking vertical support force from the guide rails of the elevator that extend to above the movable supporting platform.

17. The method according to claim 13 , wherein after the lifting of

Assignees

• Kone Corp

Inventors

• Alasentie Pentti

Classifications

• B66B7/062

  Belts · CPC title

• B66B11/009

  with separate traction and suspension ropes · CPC title

• B66B11/0045 Primary

  in the hoistway · CPC title

• B66B19/00

  Mining-hoist operation · CPC title

• B66B11/004

  in the machine room · CPC title