关键词: 两支点支撑, 减速器, 响应面优化, 轻量化, 力学特性

Abstract: Lightweight hoisting mechanism adopted two-point support that supported strutting members on both sides of frame,which influenced on the whole mechanical properties of reducer.For this reason,the mechanical analysis,optimization and improvement for reducer were conducted.By means of basic static analysis,the reducer response of lightweight hoisting mechanism was analyzed,and the key factors for influencing on mechanical properties of reducer were confirmed.The parametric finite element model of lightweight hoisting mechanism was built with ANYSYS Workbench.The relevant position parameters of strutting members both on two sides of reducer were chosen as design variables,the optimal scheme about supporting position of reduce was obtained by combining response surface methodology with multi-objective optimization design method.In addition,the further design optimization of lightweight hoisting mechanism was conducted in view of the above optimal scheme,and the optimum support position of reducer was finally obtained.The optimization results showed that the maximum deformation value of reducer decreases 16.3% and the maximum stress value decreases 23.8% by comparing with original mechanism,thus the whole static and dynamic performances were improved significantly.

Key words: two-point support, reducer response, surface methodology, lightweight, mechanical properties