1.工作原理及结构 通常冷床输送辊道的电机功率是按轧件受阻,在辊道上打滑时的最大滑动摩擦力矩M选取,以避免电机过载烧坏。在正常工作状态下,轧件在辊道上是滚动的,所需静力矩M_1比M小得多。虽然轧件受阻的情况极少,持续时间又不长,但按M选取电机功率,显然是不小的浪费。 针对以上情况,作者设计了一种摩擦块式安全联轴器,如图所示。半联轴器I及压盖通过螺栓及蝶簧将装在半联轴器Ⅱ孔内的摩擦块压紧。在正常情况下,电机转矩通过摩擦块与半联轴器I及压盖之间的静摩擦力,由半联轴器I传给了半联轴器 1. Working principle and structure Usually cooling bed conveyor roller motor power is blocked by the rolling, slip on the roller when the maximum sliding friction torque M selected to avoid motor overload burnout. Under normal working conditions, rolling on the roller is rolling, the required static torque M_1 is much smaller than M. Although the case of rolling obstruction is extremely small, the duration is not long, but according to M select motor power, obviously not a small waste. In view of the above, the author designed a friction block safety coupling, as shown. Half coupling I and gland bolt and the butterfly spring will be installed in the half shaft II friction block compression. Under normal circumstances, the motor torque through the friction block and semi-coupling I and the static friction between the gland, the half-coupling I passed to the half-coupling