Abstract: In order to solve the disadvantages of complex structure, inconvenient operation and low escape efficiency of the current escape device, a new escape cantilever device which can realize rapid escape is developed. Firstly, the design idea is clarified. The escape cantilever device not only has the advantages of simple structure, easy installation, but also has the advantages of simple operation, safety and reliability. Then, the escape cantilever device is designed in detail. Finally, the escape cantilever device is designed and analyzed. The safety of the escape cantilever device is simulated by finite element analysis. Verified by the actual operation on site, it can meet the rapid escape needs of two on-site maintenance personnel, so as to meet the design requirements and use requirements.

Key words: wind turbine engine room, escape cantilever device, welding of escape support beam, welding of escape cantilever