Abstract： Based on the torque shaft of MG900 / 2210-GWD shearer cutting unit in Xiegou Coal Mine, the influence of U-shaped structure unloading groove, V-shaped structure unloading groove and I-shaped structure unloading groove on the static strength of torque shaft was analyzed by using ANSYS finite element simulation software. The results show that the stress concentration distribution of the U-shaped structure unloading groove is relatively uniform, and the value is suitable, which can meet the application requirements. Compared with the V-shaped and I-shaped structure unloading groove, it can better play the role of transmission and overload protection. It is an ideal structural form of the torque shaft of the shearer cutting unit. The research results provide a reference for the design of torque shaft of shearer cutting unit in similar situations.
