System to enable access to travelling cable dead end hitch from inside an elevator car

Patent metadata

Field	Value
Publication number	US-10544008-B2
Application number	US-201715644702-A
Country	US
Kind code	B2
Filing date	Jul 7, 2017
Priority date	Jul 11, 2016
Publication date	Jan 28, 2020
Grant date	Jan 28, 2020

Abstract

A travelling cable end hitch and rail arrangement for an elevator system includes a rail assembly fixed to an elevator car of the elevator system, a movable device positioned at and movable along the rail assembly, and an end hitch portion of a travelling cable of the elevator system secured to the movable device and movable with the movable device along the rail assembly. A method of accessing a travelling cable end hitch of an elevator system includes accessing a travelling cable from inside of an elevator car, pulling the travelling cable upward from inside of the elevator car, moving an end hitch portion of the travelling cable along a rail assembly secured to a bottom of the elevator car via pulling the travelling cable upward, and inspecting the end hitch portion from inside the elevator car when the end hitch portion reaches a first end of the rail assembly.

First claim

What is claimed is:

1. A travelling cable end hitch and rail arrangement for an elevator system, comprising:
a rail assembly fixed to an elevator car of the elevator system;
a movable device disposed at and movable along the rail assembly; and
an end hitch portion of a travelling cable of the elevator system secured to the movable device and movable with the roller along the rail assembly;
wherein the rail assembly slopes downwardly with increasing distance from a first end of the rail assembly nearest a sidewall of the elevator car, the first rail end protruding from the sidewall of the elevator car to improve ease of removing the movable device from the rail assembly from inside of the elevator car.

2. The travelling cable end hitch and rail arrangement of claim 1 , wherein the rail assembly slopes downwardly linearly, curvilinearly or a combination of linearly and curvilinearly.

3. The travelling cable end hitch and rail arrangement of claim 1 , wherein the rail assembly is disposed below a floor of the elevator car.

4. The travelling cable end hitch and rail arrangement of claim 1 , further comprising a movable device stop at an end of the rail assembly.

5. The travelling cable end hitch and rail arrangement of claim 1 , wherein the rail assembly includes two rails with the movable device extending between the two rails.

6. The travelling cable end hitch and rail arrangement of claim 1 , wherein the travelling cable end hitch portion is wrapped around the movable device.

7. A method of accessing a travelling cable end hitch of an elevator system, comprising:
accessing a travelling cable from inside of an elevator car;
pulling the travelling cable upward from inside of the elevator car;
moving an end hitch portion of the travelling cable along a rail assembly secured to a bottom of the elevator car via pulling the travelling cable upward; and
inspecting the travelling cable end hitch portion from inside of the elevator car when the travelling cable end hitch portion reaches a first end of the rail assembly;
wherein the rail assembly slopes downwardly with increasing distance from a first end of the rail assembly nearest a sidewall of the elevator car, the first rail end protruding from the sidewall of the elevator car to improve ease of removing the travelling cable end hitch portion from the rail assembly from inside of the elevator car.

8. The method of claim 7 , further comprising:
securing the travelling cable end hitch portion to a movable device disposed at the rail assembly; and
moving the travelling cable end hitch portion along the rail assembly via the movable device disposed at the rail assembly.

9. The method of claim 8 , wherein the end hitch portion is wrapped around the movable device.

10. The method of claim 7 , further comprising:
opening an access opening in a sidewall of the elevator car; and
accessing a travelling cable via the access opening.

11. The method of claim 7 , further comprising:
replacing the travelling cable end hitch portion at the first end of the rail assembly;
releasing the travelling cable; and
allowing the travelling cable end hitch portion to move from the first end to a second end of the rail assembly opposite the first end.

12. An elevator system comprising:
a hoistway;
a travelling cable disposed in the hoistway; and
an elevator car movable along the hoistway and operably connected to the travelling cable, the elevator car including:
an elevator car floor;
a rail assembly disposed below the floor;
a movable device disposed at and movable along the rail assembly; and
an end hitch portion of the travelling cable secured to the movable device and movable therewith;
wherein the rail assembly slopes downwardly with increasing distance from a first end of the rail assembly nearest a sidewall of the elevator car, the first rail end protruding from the sidewall of the elevator car to improve ease of removing the movable device from the rail assembly from inside of the elevator car.

13. The elevator system of claim 12 , wherein the rail assembly slopes downwardly with increasing distance from a first end of the rail assembly nearest a sidewall of the elevator car, and wherein the slope is one of linear, curvilinear or a combination of linear and curvilinear.

14. The elevator system of claim 12 , further comprising a movable device stop at a second end of the rail assembly.

Assignees

• Otis Elevator Co

Inventors

• Fauconnet Aurelien
• Beauchaud Frederic

Classifications

• B66B9/00

  Kinds or types of lifts in, or associated with, buildings or other structures (characterised by control systems B66B1/00; apparatus for raising or lowering persons on stages of theatres A63J5/12) · CPC title

• B66B7/08

  for connection to the cars or cages, e.g. couplings · CPC title

• B66B7/064 Primary

  Power supply or signal cables · CPC title

• B66B7/12 Primary

  Checking, lubricating, or cleaning means for ropes, cables or guides · CPC title

• B66B5/005

  Safety of maintenance personnel · CPC title