带传动是一种依靠摩擦传递运动和动力的简单传动装置。众所周知,三角带具有传动能力大、可在短中心距和小包角等条件下工作的优点。传统的平带由于材质、制造和维护保养等方面的缺陷,很难与新出现的三角带相匹敌。近二十多年来,各国先后研制了新型的多层复合平传动带,不仅避免了传统平带的短处,并且在使用效果上远比三角带优越。 Belt drive is a simple transmission that relies on friction to transmit motion and power. It is well-known that the V-belt has the advantages of large transmission capacity, working under conditions of short center distance and small package angle. The traditional flat belt due to material, manufacturing and maintenance defects, it is difficult with the new triangular belt to rival. In recent twenty years, all countries have developed a new multi-layer composite flat belt, which not only avoids the disadvantages of the traditional flat belt, but also has a superior effect in use than the triangular belt.