输送链不仅广泛用于输送工件、物品及材料等的运输机械上,而且也常用在某些产品的连续测试上。如电扇测试线和电饭锅测试线。一般输送链的节距较长,链轮的齿数少,并且链条的滚子在导轨上滚动同时受导轨的约束,团此在低速传动时往往会产生链条松紧不一致的周期变化。这表明传动过程中两轮之间的理论中心距存在着明显的变化。如果两轮各进出 Conveyor chains are not only widely used to transport workpieces, objects and materials, but also used in the continuous testing of certain products. Such as fan test line and rice cooker test line. In general, the pitch of the conveying chain is longer, the number of teeth of the sprocket is small, and the rollers of the chain roll on the guide rail and are restrained by the guide rail at the same time. This shows that there is a clear change in the theoretical center distance between the two wheels during the transmission. If two rounds of each access