Method of replacing sheave liner
AssigneeOtis Elevator Company
InventorsJohn Randazzo, John D. Barrett, Christopher J. Elliott, David W. McKee, Hugh J. O'Donnell, John P. Wesson, Blair J. Cohen
Life of this patent
Estimating the term…
Abstract
A sheave liner for an elevator system sheave that supports a hoist rope with an elevator car suspended therefrom is replaced without having to remove the hoist ropes and without having to hang the elevator car by means other than the hoist ropes. The existing liner is cut and removed while the elevator car is suspended from the hoist ropes resting on the sheave. The new liner is rotated into its position and two ends of the liner are joined by either a mechanical bond or by a room temperature adhesive bond.
Claims13
A method of replacing an existing sheave liner for a drive sheave with a new liner, said drive sheave having a sheave groove for accommodating said existing liner, said existing liner supporting a rope with said rope having contact with a substantial portion of said existing sheave liner and hanging downward from said sheave thereby having an exposed portion of said existing sheave liner, said sheave groove having a circumference, said method comprising the steps of:
- providing a new liner for said drive sheave, said new liner having a first new liner end and a second new liner end, said new liner having length substantially equal to the length of said circumference of said sheave groove;
- cutting said existing sheave liner so that a first existing liner end and a second existing liner end are formed;
- pulling said first existing liner end outwardly to remove said existing liner;
- positioning said first new liner end between said rope and said groove so that said first end of said new liner being pulled inward in direction of rotation of said sheave;
- and
- joining said first new liner end and said second new liner end to form a substantially continuous new liner.
Dependencies are inferred from the claim text.