MEASURING THE ESCALATOR TRANSMISSION EFFICIENCY
P. J. Kral
Abstract:
At the Institute for Machine Elements and Machine Design three different escalator (moving staircase) gearboxes were tested to compare their coefficient of efficiency. The tested gears are two worm gears and a bevel-spur gear. The two worm gears differ in its tooth shape (hollow flank – involute flank).
For this purpose a test bed consisting of gearbox, electric motor and regulated pendulum generator was built up.
To calculate the coefficient of efficiency it is necessary to measure the input- and output-torque at both gear shafts. First is done by measuring the effective power (2- Wattmeter Method) of the electric motor. The second value, the output-torque, could be controlled with aid of the brake generator and is exactly known.
The coefficient of efficiency of each gear is measured for both directions at idle, 25%, 40%, 50%, 75% and full load.
Keywords:
gears, efficiency, coefficient of efficiency
Download:
IMEKO-WC-2000-TC3-P081.pdf
DOI:
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Event details
Event name:
XVI IMEKO World Congress
Title:

Measurement - Supports Science - Improves Technology - Protects Environment ... and Provides Employment - Now and in the Future

Place:
Vienna, AUSTRIA
Time:
25 September 2000 - 28 September 2000
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