Is the escalator a kind of escalator?

It can be said that escalators include moving sidewalks, but the difference is that the steps are flat and the stairs are the same. So, there is another difference between them. The angle of the escalator can be 30 and 35. Note that 35 cannot be used as a fire escape. The automatic pedestrian degree is only 12 or 0. Their transmission principles are basically the same. Now the industry has adopted helical gear transmission, and frequency conversion (when no one is around, it can automatically judge whether it is rising or falling) is an additional function.