Abstract: Based on the state and problem for heavy duty scraper conveyor, proposesd the condition of heavy duty scraper conveyor reliably starting and running, i ntroduced the principles for frequency conversion motor drive, the CST and the fill controlled turbo coupling controlled by valves, discused their merits and drawbacks w hen used in heavy duty scraper conveyor.And made deeply comprising and analyzing to their function, technical function, reliability, technology and economy etc., it con cluded that there were the merits:full functions, reasonable technology and economy for the fill controlled turbo coupling controlled by valves, which was the ideal drive equipment for heavy duty scraper conveyor.