单圆盘甘蔗切割器影响破头率的运动学仿真

Simulative Kinematics Analysis on the Affecting Factors of Rate of Broken Biennial Root of Single Base Cutter of Sugarcane Harvester

利用有限元软件ANSYS对甘蔗切割进行有限元分析,制定了单圆盘甘蔗切割器切割甘蔗的坏切割状态判别标准,通过物理试验制定了刀盘压破蔗头的判别标准。利用动力学仿真分析软件ADAMS进行了切割器连续切割多根甘蔗的运动学仿真,定量研究了影响切割状态和压破蔗头的各因素及交互作用对破头率的影响机理。结果表明,小频率和小速比、小振幅和少刀片的组合有利于降低破头率,当频率、振幅为零,速比为24,倾角为15°,刀片数目为2片时破头率为6.7%。

Sugarcane cutting was analyzed with the currency finity cell analysis software ANSYS, and distinguish standard of single base cutter on the bad incision state has been worked out by means of finity cell. Through physical simulative experiment, distinguish standard of broken root by base cutter＇s pressing was formulated. Simulative kinematics analysis of cutting sugarcane continuously has been carried out by using the dynamics analysis software ADAMS, and the quantity study on affecting factors and interactive effect on the rate of broken biennial root was done. The results showed that the combination of low frequency and low speed ratio, low amplitude and few razor blades are beneficial in reducing the rate of broken biennial root. Under the combination of factors （amplitude and frequency is zero, speed ratioX1 = 24, obliquity of base cutterX4 = 15°, the number of razor bladesX5 = 2）, the rate of broken biennial root is 6.7 %.