双轴异速立式捏合机传动系统优化设计

Optimization Design of Transmission System of Biaxial Heterogeneous Vertical Kneader

双轴异速立式捏合机一般采用单输入多输出的复合行星轮系来实现空心桨、实心桨的自转与公转。由于其传动系统结构的复杂性,目前还没有建立相关设计计算的理论依据。针对上述问题,采用桨叶分层切片简化算法进行仿真计算,以得到桨叶自转与公转的扭矩关系,反推传动系统内各传动轴的扭矩关系。该分层简化算法经过与全桨叶仿真结果对比,误差较小,证明该简化算法可行。仿真结果表明:实心桨扭矩、空心桨扭矩及公转扭矩,在不同切片厚度的情况下变化趋势一致,得到了桨叶自转扭矩及公转扭矩最大时的相位角;实心桨、空心桨扭矩在相位角变化时,扭矩比例基本不变,得到了空心桨、实心桨自转与公转扭矩比例关系;然后根据仿真结果对传动系统各传动轴扭矩分配进行优化,并使用优化结果完成了某小型立式捏合机的设计与制造。

Single-input and multi-output compound planetary gear train is often used to realize the rotation and revolution of the hollow propeller and the solid propeller of biaxial heterogeneous vertical kneader.Due to the complexity of the transmission system structure,no relevant theory basis has been established.In order to solve the problem,a propeller slicing algorithm was used to simulate and calculate the torque relationship between blade rotation and revolution and then to obtain the torque relationship of each transmission shaft in the transmission system.Compared with the simulation results of the whole propellers,the error of the simplified simulation method results was acceptable.The simulation results show that the solid propeller torque,the hollow propeller torque and the revolution torque at different slice thickness change at the same trend;the phase angles are obtained when the rotation and revolution torque are respectively maximum;the proportional relationship between the rotation torque and the revolution torque is obtained.Then based on the simulation results,the transmission torque distribution of each drive shaft was optimized,and a small-scale biaxial heterogeneous vertical kneader was designed and manufactured by using the optimization results.