Influence analysis of the helical gear pair’s center distance of vibration screen exciter on its dynamic characteristics: Case design for the linkage between simulation experiments and scientific research

This article uses numerical simulation technology to design a project case that combines simulation experiments and scientific research practices with the characteristics of the coal mining industry. The case takes the helical gear pair, the key component of the vibration exciter of the mining vibrating screen, as the research object, establishes the virtual prototype of the vibration exciter system of the vibrating screen, determines the complex working conditions and dangerous working conditions of the helical gear pair, and calculates the fatigue life under the standard center distance and non-standard center distance. The dynamic fluctuation characteristics and dynamic vibration response characteristics of center distance of helical gear pair under non-standard center distance are studied. It is concluded that non-standard center distance can not only eliminate the phenomenon of “tooth squeezing”, but also make the meshing transmission more stable. Through case training combined with simulation experiments and scientific research practice, it has promoted the internalization and absorption of students’ professional knowledge, as well as the cultivation of students’ comprehensive practical and engineering innovation abilities.