重型叉车前驱动桥桥壳尺寸优化设计  

Optimization Design of Front Drive Axle Housing Dimensions for Heavy-Duty Forklift Trucks

作　　者：张远锋 戚海勇 梅磊 宁晓斌[2] Zhang Yuanfeng;Qi Haiyong;Mei Lei

机构地区：[1]杭叉集团股份有限公司 [2]浙江工业大学机械学院

出　　处：《工程机械》2025年第2期100-104,I0006,I0007,共7页Construction Machinery and Equipment

基　　金：浙江省基础公益研究计划项目(LGG22E050019)。

摘　　要：为解决新型重型叉车研发中出现的前驱动桥桥壳强度不足的问题,建立叉车多体动力学模型,得出货叉满载举升时桥壳的受力,并应用有限元计算桥壳应力;进行重型叉车样车满载举升,采用测试装备测量桥壳实际应力,实测应力与有限元计算结果吻合;分析重型叉车紧急转向、紧急制动、凹凸路面行驶等极端行驶情况下桥壳的动态载荷,分别得出桥壳最大载荷;以桥壳尺寸为设计变量,桥壳重量为约束条件,桥壳最大应力为优化目标,进行桥壳有限元尺寸优化,在不增加桥壳重量的前提下,降低桥壳最大应力,桥壳优化设计结果满足强度要求。To solve the problem of insufficient strength of the front drive axle housing in the research and development of new heavy-duty forklift trucks,a multi-body dynamic model of the forklift truck is established to obtain the force on the axle housing when the forks lift with a full load,and the stress on the axle housing is calculated by applying finite element.Full load lifting of the prototype of the heavy-duty forklift truck is carried out,the actual stress on the axle housing is measured by using test equipment,and the measured stress is in line with the finite element calculation result.The dynamic loads of the axle housing under extreme travelling conditions of the heavy-duty forklift truck such as emergency steering,emergency braking and uneven load surface travelling are analyzed to obtain the maximum load of the axle housing respectively.With the dimensions of the axle housing as the design variable,the weight of the axle housing as the constraint and the maximum stress on the axle housing as the optimization objective,finite element dimension optimization of the axle housing is carried out to reduce the maximum stress on the axle housing without increasing the weight of the axle housing,and the optimization design results of the axle housing meet the strength requirements.

关 键 词：叉车 桥壳 尺寸优化设计 

分 类 号：TH242[机械工程—机械制造及自动化]