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Synthetic non-metallic rope for an elevator

A non-metallic material, elevator technology, used in textile cables, elevators in buildings, elevators, etc., can solve problems such as limiting durability, and achieve the effect of preventing wear and contact and prolonging service life.

Inactive Publication Date: 2005-03-30
OTIS ELEVATOR CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Prevents strands from moving relative to each other, however, limits durability by creating undesired compressive tension as the cable moves over the traction sheave

Method used

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  • Synthetic non-metallic rope for an elevator
  • Synthetic non-metallic rope for an elevator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] Figure 1 shows an elevator system 10 with the hoistway and hoisting components, such as guide rails, removed for clarity. Elevator system 10 includes a car 12 on a car frame 14 , a counterweight 16 , a pair of hoist ropes 18 connecting the car frame 14 to the counterweight 16 , a drive motor 22 , and a traction sheave 26 . Although only two cables are shown for illustration, those skilled in the art will appreciate that a greater number of cables may be used, the exact number of cables depending on the particular application.

[0021] Drive to rotate the traction sheave 24 is provided by a drive motor 22 . Friction between the pulley 24 and the hoisting rope 18 creates traction that pulls the hoisting rope 18, thereby causing the car 12 or counterweight 16 to move up and down in the hoistway. The traction between the hoist rope 18 and the pulley 24 can also provide a reaction force to keep the car frame 14 stationary when the pulley 24 is not rotating, such as when the...

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PUM

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Abstract

A hoist rope (18) for an elevator is formed from synthetic, non-metallic materials. The hoist rope (18) includes a plurality of load-carrying strands (28) with each strand (28) encased within a coating layer (32). The coating layers (32) provide protection against wear and provide sufficient lubricity to permit relative movement of the strands (28) to equalize loading on the strands (28). The plurality of strands (28) are surrounded by a jacket (34). The jacket (34) provides sufficient traction with a traction sheave (24), transfers traction loads to the strands (28) while permitting movement of the strands (28), and provides a flame retardant characteristic to the hoist rope (18). In one embodiment of a passenger conveyor system (10), the hoist rope (18) is engaged with a traction sheave (24) having a sheave liner (36). The material for the jacket (34) and sheave liner (36) are selected to optimize the coefficient of friction between the hoist rope (18) and traction sheave (24).

Description

[0001] This application is a divisional application of the invention patent application with the title of "synthetic non-metallic cable for elevator" and application number 97198828.5. technical field [0002] This invention relates to ropes for use in elevators, and more particularly to ropes made of synthetic non-metallic materials to be used in elevators having a traction sheave for driving the ropes and thus the elevator . Background technique [0003] A traditional traction-type elevator consists of a car mounted on a car frame, a counterweight connected to the car frame by cables, and a machine that drives a traction sheave that engages the cables. As the machine turns the pulley, the friction between the grooved surface of the pulley and the cable moves the cable, which in turn causes the car frame and counterweight to rise and fall. In some cases, linings are located in the grooves to improve the friction between the cables and the pulleys and reduce wear on the pul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66B7/06B66B11/08D07B1/02D07B1/16
CPCD07B5/005D07B2501/2007B66B7/06D07B2201/2044B66B11/08D07B2201/2088D07B1/162D07B2205/205D07B1/025D07B5/006D07B2201/2087D07B2201/1014D07B2801/10D07B2801/12D07B2801/24D07B1/16
Inventor H·J·奥唐奈E·G·奥尔森
Owner OTIS ELEVATOR CO
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