Scheme design and structural safety analysis of lifting net cage

Abstract Deep-water cage culture can better simulate the natural growth environment of fish, improve the culture environment, and improve the yield and quality of cultured varieties. A lifting cage is a new type of fishery culture equipment, which has the advantages that ordinary deep-sea cages do not have: lifting can be realized in the case of heavy waves, wave load can be reduced, and structural safety can be improved. In this paper, according to the needs of deep-sea aquaculture, a lifting cage scheme is designed, the structural strength and stability of the cage structure under extremely typical working conditions are checked by ANSYS, and the stress concentration parts are optimized. The results show that the lifting cage platform designed in this paper has the characteristics of a simple structure and high safety factor, which provides a reference for structural design and safety evaluation of deep-sea lifting cages.