Patent ID: 9676596
Date: 2017-06-13
CPC Classifications: B66B

Claim:
1. An elevator refurbishing method in which a hydraulic elevator in which a hydraulic jack is installed in an equipment installation zone is refurbished into a machine-roomless elevator that uses a two-to-one (2:1) roping method that comprises a hoisting machine, a counterweight, and a pair of counterweight guide rails, the equipment installation zone being a region inside a hoistway on either a left side or a right side of a car when viewed from directly above, wherein the elevator refurbishing method includes steps of: installing at least one guide rail from the pair of counterweight guide rails in the equipment installation zone while leaving the hydraulic jack in position; removing the hydraulic jack from the hoistway; installing the hoisting machine in a lower portion of the equipment installation zone using a space that is created by removal of the hydraulic jack; and installing a car return sheave and a counterweight return sheave on an upper portion of the counterweight guide rails.