四连杆升降机构的仿真与结构优化

摘要

Through the four connecting rod lifting mechanism modeling, use the method of motion simulation, it is concluded that the maximum tension rod for 38049 kg;Further through the finite element method to bar stress and strain of the four rod lifting mechanism is simulated;In finite element based on the results of simulation and structure optimization, the optimized rod performance is more reasonable, the maximum Von Mises reduced from 300.7 MPa to 300.7 MPa, the overall quality and to reduce the 18.65 kg, lower by 33%, but also for other parts of four rod lifting mechanism design provides a feasible method for reference.%通过对四连杆升降机构进行建模，用运动仿真的方法，得出拉杆的最大拉力为38049kg；进一步通过有限元方法对四杆升降机构中的拉杆应力、应变进行了模拟；在有限元仿真结果的基础上进行了结构优化，优化后的拉杆性能更加趋于合理，最大Von Mises由300.7MPa降低到259.5MPa，整体质量也减轻了18.65kg，降低幅度达33%，同时也为四杆升降机构的其他零部件设计提供了切实可行的借鉴方法。