Operation and maintenance of the fan height is not a problem filing legitimate national security benefits of 12 accredited test for detection of internal certification authority patented product fan installation free climbing device, the fan will achieve a safe and effective maintenance of scientific management, shorten each time eliminating defects fan failure, improve work efficiency, reduce the maximum degree of maintenance personnel to climb up and down frequently, the risk of personal safety, technical staff to work longer, and thus guarantee the stable operation of the wind farm turbine, turbine wind farm is equivalent to enhance efficiency, while effectively managing through scientific and rational allocation fan maintenance personnel, improve the economic efficiency of wind farms.