Rope wheel assembly, compensator and elevator arrangement

Patent metadata

Field	Value
Publication number	US-2019106295-A1
Application number	US-201816117226-A
Country	US
Kind code	A1
Filing date	Aug 30, 2018
Priority date	Oct 11, 2017
Publication date	Apr 11, 2019
Grant date	—

Abstract

A rope wheel assembly of an elevator includes a frame, a plurality of rope wheels for guiding ropes of the elevator, and a plurality of bearings. The rope wheels are mounted coaxially on the frame such that they are rotatable relative to the frame as well as relative to each other. The rope wheel assembly includes a central shaft passing through the rope wheels, which central shaft is non-rotatable relative to the frame, and the rope wheel assembly includes a hollow cylinder surrounding the central shaft, the hollow cylinder being mounted on the central shaft rotatably relative to the central shaft, each said rope wheel being mounted on the cylinder rotatably relative to the cylinder. The rope wheel assembly includes a bearing axially between rope wheels that are next to each other via which bearing they are supported on each other in axial direction. A compensator and an elevator arrangement implementing the rope wheel assembly are also disclosed.

First claim

1 . A rope wheel assembly of an elevator, comprising:
a frame; a plurality of rope wheels for guiding ropes of the elevator; and bearings, wherein the plurality of rope wheels are mounted coaxially on the frame such that the plurality of rope wheels are rotatable relative to the frame as well as relative to each other; a central shaft passing through said plurality of rope wheels, the central shaft being non-rotatable relative to the frame; a hollow cylinder surrounding the central shaft, the hollow cylinder being mounted on the central shaft rotatably relative to the central shaft, each of said plurality of rope wheels being mounted on the cylinder rotatably relative to the cylinder; and a bearing in an axial direction between the rope wheels that are next to each other via which bearing they are supported on each other in the axial direction.

2 . The rope wheel assembly according to claim 1 , wherein the rope wheel assembly comprises gap between the rope wheels that are next to each other, and an annular seal in the gap for blocking substances passing in the gap in a radial direction.

3 . The rope wheel assembly according to claim 2 , wherein the seal is positioned in the radial direction on the outer side of the bearing.

4 . The rope wheel assembly according to claim 2 , wherein the seal is positioned in the radial direction on the outer side of the bearing and closer to the bearing than the outer rims of the rope wheels that are next to each other.

5 . The rope wheel assembly according to claim 2 , wherein the rope wheel assembly comprises lubricant in the radial direction on the inner side of the seal.

6 . The rope wheel assembly according to claim 5 , wherein the lubricant is arranged to lubricate the bearing.

7 . The rope wheel assembly according to claim 5 , wherein the seal is suitable for blocking the lubricant from passing radially outwards in the gap.

8 . The rope wheel assembly according to claim 2 , wherein the seal is suitable for blocking dirt and/or water from passing radially inwards in the gap.

9 . The rope wheel assembly according to claim 2 , wherein the rope wheels next to each other comprise annular seal grooves on their axial sides facing each other, and the axial sides of the seal extend into the annular seal grooves of the rope wheels next to each other.

10 . The rope wheel assembly according to claim 1 , wherein the bearing is a rolling element bearing.

11 . The rope wheel assembly according to claim 10 , wherein the rope wheels next to each other comprise annular bearing grooves on their axial sides facing each other in which annular bearing grooves the rolling elements are placed, in direct contact with the annular bearing grooves.

12 . The rope wheel assembly according to claim 10 , wherein the rolling elements are arranged between rope wheels next to each other in a circular array surrounding the cylinder, and the diameter of the circular array is more than 15 times the diameter of the rolling bearing elements.

13 . The rope wheel assembly according to claim 9 , wherein each of the rope wheels next to each other comprise a rope wheel body, and said annular seal grooves and/or said annular bearing grooves are delimited by the body.

14 . The rope wheel assembly according to claim 9 , wherein each of the rope wheels next to each other comprise a rope wheel body, and the body comprises a hub, and said annular seal grooves and/or said annular bearing grooves are formed in the hub.

15 . The rope wheel assembly according to claim 1 , wherein the rope wheel assembly comprises an adjusting means mounted on the cylinder for adjusting axial position of the rope wheels relative to the cylinder.

16 . The rope wheel assembly according to claim 1 , wherein the rope wheel assembly comprises at least one bearing radially between each of the rope wheels and the cylinder, said at least one bearing being a sliding contact bearing.

17 . The rope wheel assembly according to claim 1 , wherein the rope wheel assembly comprises at least one bearing radially between the shaft and the cylinder, said at least one bearing being a rolling element bearing.

18 . A compensator of an elevator, comprising the rope wheel assembly according to claim 1 .

19 . An arrangement for guiding belt-shaped ropes of an elevator, the arrangement comprising:
a plurality of ropes; and the rope wheel assembly according to claim 1 .

20 . An arrangement for guiding belt-shaped ropes of an elevator, the arrangement comprising:
a plurality of ropes; and the compensator according to claim 18 .

Assignees

• Kone Corp

Inventors

• Salmi Markus

Classifications

• B66B15/04

  Friction sheaves; "Koepe" pulleys · CPC title

• B66B11/008

  with hoisting rope or cable operated by frictional engagement with a winding drum or sheave · CPC title

• B66B15/02 Primary

  Rope or cable carriers · CPC title

• F16C19/14

  for both radial and axial load · CPC title

• B66B7/02 Primary

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