| 摘要 |
PURPOSE:To lengthen the life of a motive power transmission belt, by making numerous projections of a material of higher thermal conductivity than that for the belt, on the belt except for its sides to be put in pressure contact with a pulley, to improve the heat radiating property of the belt to suppress its temperature rise. CONSTITUTION:A motive power transmission belt 1 is wound in the V-groove of a pulley, for example. A plurality of anti-tension elements 3 are provided in the body 2 of the belt 1 so that the anti-tension elements extend in the direction of the width of the belt. The oblique sides 21, 22 of the belt 1 are put in pressure contact with the pulley at both the sides of its groove. The belt 1 is coated with canvas layers 25, 26 at the top 23 and bottom 24. Numerous projections 4 made of a material of higher thermal conductivity than that for the body 2 of the belt 1 are provided on the canvas layers 25, 26 to increase the surface area of the belt except for the part to be put in pressure contact with the pulley. The radiation of heat to the atmosphere is thus effectively caused to suppress the rise in the temperature of the belt 1 to lengthen its life. |
