Paper Title
Dynamic Simulation Research on Double-Pitch Chain Drive System of a Belt Dryer Based on ADAMS

Abstract
In the testing center of Jiangsu Famsun intelligent technology co, ltd, the plate conveyor belt of the belt dryer during the transmission process is subject to variable impact loads, and unsteady running of the plate conveyor belt mainly will cause fatigue damage to the conveyor belt plate and quality problem in the dried product. Therefore, in order to study its causes and reduce these reasons, it is necessary to start with the plate conveyor belt of the belt dryer, study its motion and dynamic characteristics, and the main factors affecting its dynamic response. So In this paper, the 3D model of the belt dryer's double-pitch chain drive system is created in SolidWorks. The theoretical analysis was performed, and the dynamic simulation analysis is carried out based on the multi-body dynamic simulation software ADAMS with the goal of achieving the minimum meshing impact force so as to reduce the damage to the conveyor belt plate of the belt dryer. Theoretical analysis indicates that the polygon effect is more obvious when the driving sprocket teeth number is small. The influence on the conveying operation stability of the plate conveyor belt is great. The instantaneous chain velocity change up and down, fast and slow, is one of the critical factors causing pulsating and additional dynamic load and leading to unstable conveying speed of the plate conveyor belt structure. The dynamics simulation results show that the contact force between the sprocket and the chain link for the new structure is smaller than that of the old one; And the angular velocity, angular acceleration, motion trajectory of the new model, and related parts are smaller and slightly more uniform than those of the old one. Keywords - Belt dryer, Simulation, Optimization, Chain drive, Multy-body dynamic, Analysis, Mechanical system automatic dynamics analysis (ADAMS).