Research on Structure Design of Main Reducer Based on Vertical Mill

∗The vertical mill is a large-scale mechanical equipment with high efficiency for grinding and drying, and the gear reducer of the vertical mill is the most important transmission part in the large-scale grinding equipment, which is located at the bottom of the vertical mill, and it is also the main power source for driving the grinding disc to rotate. Since 1960s, vertical mill gear reducer has been widely used in vertical mills at home and abroad. In the design and research, the main research objects include the calculation and analysis of spiral bevel gear, involute helical cylindrical gear and planetary gear transmission, shaft design, key design, coupling design, bearing selection, lubrication system parameter analysis and box design. Firstly, the hierarchical structure of reducer is divided, and then three-dimensional parametric design models are established in Inventor according to the characteristics of components, and parameter associations are established to realize the parametric design of reducer. Parametric design process integrates parameter calculation, design rules, selection methods and parametric modeling, etc. Only by inputting basic parameters, the modified design of products can be completed. In this paper, the structure of vertical mill reducer is described, and its main components and functions are discussed in order to provide reference for the development of vertical mill reducer in China.