July 2009 Steel Wire Ropes for Traction
SPECIAL NOTICE: Please check each course for verification of approval before purchasing. This test is based on the article, Steel Wire Ropes for Traction Elevators: Part Two published in the July 2009 issue and counts as 1 Contact Hour (0.1 CEU) towards recertification. Most courses are approved by NAEC for CET/CAT and NAESAI for QEI and in the following states: Alabama, Arkansas, Florida, Georgia, Illinois, Indiana, Kentucky, Maryland, Mississippi, Missouri, Montana, Oklahoma, Pennsylvania, Vermont, Virginia, Washington, West Virginia, Wisconsin.. Learn Objectives - After reading this article, you should:
- Have realized that the simplest elevator rope is obtained by laying six strands
- Understand that the eight-strand rope with a natural fiber core can be considered the most frequently used elevator rope today
- Have learned that depending on the intended application, two different core types are used in elevator ropes: fiber cores made of natural or synthetic fibers and steel-wire cores
- Have realized that the most commonly used suspension rope diameters are 6-24 mm
- Have understood that the development of small rope diameters is being driven by the trend toward machine-room-less (MRL) elevators with small, fast-running drive machines and the move to reduce drive torque levels
- Have realized that a distinction is made between detachable and permanent rope terminations
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