A Study on Strength of Toothed Belt : 3rd Report, Fatigue Strength and Features of Fracture

概要

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In this paper, the relation between the tight side tension, the belt life and the features of fracture of toothed belt is discussed experimentally. Two kinds of toothed belts are used. They are a section-L polyurethane belt using wire rope as the load-carrying cords a polychloroprene rubber belt using glass fibre cord. From the experiment, the following results have been obtained. Both of belts present several feature of fracture which are classified into a break of the cords, a shearing on the tooth, an abrasive wear of the tooth frank, etc. depending on the tight side tension and the number of cycles. The greater the number of pulley teeth is, the longer the belt life is. And life increases with a decreasing tight side tension. However there is no endurance limit observed as steel.
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