基于多目标优化的叉车框架结构设计  

Design of Forklift Frame Structure Based on Multi-objective Optimization

作　　者：张洪涛[1,2] 董玉德[1] 李宏玲[1] 钱正旺[2] Zhang Hongtao;Dong Yude;Li Hongling

机构地区：[1]合肥工业大学 [2]安徽合力股份有限公司,安徽合肥市230601

出　　处：《工程机械》2021年第9期42-48,I0019,共8页Construction Machinery and Equipment

摘　　要：框架结构是叉车的主要载荷承载部件,针对叉车使用工况复杂,车架焊接应力集中以及车架自身固有频率与发动机低阶振动频率可能发生共振等情况,以典型或极限工况对某型叉车车架上受力的关键零部件进行刚度强度校核;针对整体框架结构进行模态、仿真分析并优化现有结构改变其固有频率,以降低低阶振动频率产生共振的情况;结合落物冲击试验验证框架结构的安全性。Frame structure is the main load-bearing component of forklift.In view of complicated working conditions of forklift,welding stress concentration of frame and possible resonance between natural frequency of frame and low-order vibration frequency of engine,stiffness and strength of key components stressed on frame of a forklift are checked under typical or extreme working conditions;modal and simulation analysis of overall frame structure are carried out,and existing structure is optimized to change its natural frequency to reduce resonance of low-order vibration frequency;combined with falling object impact test,safety of frame structure is verified.

关 键 词：框架结构 有限元 仿真分析 落物冲击 

分 类 号：TH242[机械工程—机械制造及自动化]