Method of mounting a lift and lift obtained
AssigneeOtis Elevator Company
InventorsJean C. Chapelain, Daniel Beaulieu
Life of this patent
Estimating the term…
Abstract
A temporary pulley assembly is fastened to the ceiling of a lift hoistway, and is used to raise the sheave crossbeam, sheaves, car, and counterweight assembly to the hoistway ceiling. The crossbeam is a telescoping member which is extended to fit into pockets in the hoistway side walls. Installers working on the roof of the car can fix guide rails to the hoistway walls as the entire assembly is being raised en masse. When the assembly reaches the top of the hoistway, the hoisting cables or ropes are properly fastened to the various lift sheaves, and to the hoistway ceiling.
Claims7
A method for mounting a lift assembly in a shaft, said lift assembly comprising a beam with pulleys mounted thereon and having telescoping arms which are extendable into support pockets formed in opposite sides of an upper part of the shaft, said method comprising the steps of:
- (a) securing hoist pulley means to a top wall of the shaft;
- (b) placing guide rails, a counterweight assembly, said beam, and cable drums in the bottom of the shaft;
- (c) providing a support platform in the vicinity of, but above the bottom of the shaft;
- (d) positioning a lift cab on said support platform;
- (e) providing a lift drive machine in the shaft;
- (f) coupling cables from said cable drums with the counterweight assembly while fixing one end of the coupled cables to said beam, said coupled cables being reeved over the pulley on said beam and over a drive pulley on the lift drive machine;
- and
- (g) raising the beams in the shaft by means of the hoist pulley means, and setting the beam at the top of the shaft by extending the beam arms into the support pockets.
Dependencies are inferred from the claim text.