某链条拉式平衡机优化设计

Optimum Design of a Chain Equilibrator

针对某链条拉式平衡机设计效率低、优化设计难度大的现状,建立该类平衡机不平衡力矩数学模型并进行优化设计.研究了该链条拉式平衡机的设计过程,用直角坐标系中曲线方程描述链条几何位置,建立了不平衡力矩的数学模型.考虑各种使用工况,建立平衡机优化设计目标函数和约束条件,形成了平衡机优化设计数学模型.基于SQP方法,编制优化设计计算程序,得到了优化设计结果.该链条拉式平衡机优化设计结果表明:优化后不平衡力矩均降低,将有效减低高低机手轮力、随动功率,且极大提高了设计效率.

Aimed at the poor design efficiency and difficult optimum design,the mathematic modal of unbalance moment of chain equilibrator was established and optimized.Studying the design process and describing the position of chain with curvilinear equation in rectangular coordinate system,the mathematic modal of unbalance moment of chain equilibrator was established.Considering various working conditions,the objective function and constraint conditions of optimum design of equilibrator were established,as well as the mathematic model was formed.Based on SQP method,the program of optimum design was generated and the optimum result was obtained.The results indicate that the unbalance moments is reduced,which reduces the handwheel force of elevating and the power of following,thus the design efficiency is greatly increased.