Ropeway transportation is the most economical method for goods transport in power line project with large height difference. The whole system consists of work rope, scaffold, goods container, driving device and ground anchor, etc, and the driving device is the most crucial. Based on the research of the ropeway used in other construction units, a new driving device was developed. It is suitable for the construction in 500 kV Danba-Dagang power line project with 1 700 m height difference, which can provide the technical guarantee for the successful completion of the project.