某型矿用自卸车油改电再制造电池支架强度分析及结构优化  

Strength Analysis and Structure Optimization of Battery Bracket for a Mining Dumper after Oil-to-electricity Remanufacturing

作　　者：郭骏 Guo Jun

机构地区：[1]福建宏大时代新能源科技有限公司

出　　处：《工程机械》2024年第1期153-158,I0014,共7页Construction Machinery and Equipment

摘　　要：在分析矿用自卸车油改电再制造后运行过程中车架及电池支架所承受的载荷的基础上,结合电池支架有限元模型,着重研究电池支架在极限载荷、坡道行驶、曲线行驶、启动、紧急制动及在组装过程中起吊等6种工况下,电池支架整体结构的受力情况,发现电池支架在长边两端安装时应力水平远超材料屈服强度极限,存在较大强度失效风险。通过在车架两纵梁位置(Z向位置)增加底托结构而改变电池支架整体的安装方式和受力情况,同时考虑采用改变电池支架型材及板材厚度的方式进行优化。优化后,电池支架在各工况下的应力水平均满足强度要求。On the basis of analyzing the loads borne by the frame and battery bracket during the operation of a mining dumper after oilto-electricity remanufacturing,combined with the finite element model of the battery bracket,the stress on the overall structure of the battery bracket under six working conditions such as extreme loads,slope running,curve running,start-up,emergency braking and lifting during assembly is emphatically studied.It is found that the stress level of the battery bracket during installation of the two ends of the long side far exceeds the yield strength limit of the material,posing a great risk of strength failure.By adding a bottom support structure to the two longitudinal beams(Z-direction)of the frame,the overall installation method and stress situation of the battery bracket are changed.At the same time,the means of changing the thicknesses of the battery bracket profiles and plates is considered for optimization.After optimization,the stress level of the battery bracket under each working condition meets the strength requirements.

关 键 词：矿用自卸车 电池支架 强度分析 结构优化 

分 类 号：U469.4[机械工程—车辆工程] TD52[交通运输工程—载运工具运用工程]