Influencing Factors of Dynamic Balance on Pulverizing Mechanism of Straw Crushing and Returning Machine Based on Digital Simulation
Excessive dynamic unbalance force between the cutter roll and the frame will increase abnormal vibration of the grinding mechanism and reduce the working performance of the mechanism.In order to strengthen the balance of the grinding mechanism of the returning machine,the dynamic relation of the mechanism was established,and the relationship between the stress state of the cutter and the balance of the roll motion was analyzed and discussed.The influence factors were analyzed by engineering software,and the simulation images were imported into data processing software for quantitative processing.The re-sults showed that the position of cutting stalk,the material and the speed of cutting blade affect the bal-ance of cutting blade motion.The phase angle of the cutter group,the speed and the distance between the cutter group and the cutter roll affect the balance of the cutter roll motion,and the cutter roll dynamic bal-ance is the best when the phase angle of the cutter group is 90 °.It was calculated that the symmetry of cutter roll is the best when the distance between two adjacent cutter sets is 133.61 mm.The cutter mathe-matical model was established to verify the rationality of cutter roll speed.Then the improvement measures were put forward:increasing the phase angle of cutter group and adjusting the distance between cutter and cutter roller can enhance the dynamic balance performance of cutter roll.
万方数据
维普
