The way of the stretching device of powerful belt conveyor and the advantages and disadvantages of the heavy hammer stretching device and the automatic controlling hydraulic stretchine device,and how to turn the heavy hammer stretching device into the automatic controlling hydraulic stretching device and their working state after being reformed.

This paper studies on the interference from frequercy-convertor to microcircuit including collection signal and control signal during mightiness belt is detected.

Design and application of high stress belt conveyor;