Abstract: A design method of the winch driven by contactless magnetic coupling is
researched for the core purpose of the turning shaft sealing in a deepwater environment. This
method has six design phases, including domestic and foreign information query and retrieval,
graphic analyses of relevant structures, innovative design of 2D assembly sketches, a theoretical
computation of structure parameters, the 3D modeling and motion simulation and engineering
drawing. This method is of generality, which can provide examples for the post-graduate students
and engineering personnel in self-renovation design of scientific research.

Key words: magnetic coupling, winch, graph analysis, CAD