四、用牵引卷扬机取代蒸汽机车拖动清筛机 改造大揭盖清筛机的第二个技术关键,乃是牵引方式的改变。 大家知道筛子的处理量指的是平均值。但是蒸汽机车牵引清筛机时不能匀速前进,我们测试得的1.5km/h,是人为的平均之后的牵引速度,实际上瞬时速度比平均速度高很多, Fourth, the use of traction winch instead of steam locomotive Dragging cleaning machine to change the big Jiegai cleaning machine second key technology, but traction changes. It is known that the throughput of the sieve refers to the average value. However, the steam locomotive traction cleaning machine can not move at a constant speed, we tested 1.5km / h, is the average after the traction speed, in fact, the instantaneous speed is much higher than the average speed,