| 摘要 |
Since 1970 fly-wheels made of fibre materials (for example glass, polyaramide) are known; they offer certain advantages in comparison to fly-wheels made of steel, for example a higher mass specific energy density and a substantially danger-free bursting behaviour. Heretofore, fly-wheels obtained by fibre winding have been exclusively fabricated from monofilaments coated with a synthetic matrix (for example epoxy resin). Said winding operation is complicated and requires amongst other things an accurate guiding of the filaments. In order to obtain the fly-wheel according to the invention, a band of fibrous filaments (for example glass, polyaramide) is wound with prestressed conditions to a hub. The prestress is modified in relation to the increasing winding radius. The winding layers are impregnated with a synthetic resin (for example epoxy resin) for the fixing thereof. After completion of the winding, the fly-wheel is hardened by rotation and heat supply under vacuum conditions. The cost of the winding and also of the finished fly-wheel obtained from a band of fibrous filaments is considerably reduced in comparison to fly-wheels made from monofilament yarns. |
