830E矿用自卸车转向缸底座开裂原因分析与改进

Analysis and Improve of Steering Cylinder Base of 830E Mining Trucks

神华北电胜利能源公司使用的矿用830E卡车,在经过一段时间的使用,转向缸底座易产生裂纹。利用ANSYS软件对其进行了分析与改进。利用Pro/E软件建立了转向缸底座的几何模型;将其导入ANSYS软件中,对其进行了静力学分析与模态分析。经过分析得知,转向缸底座销孔部分与其底板连接处产生的交变应力大于材料的许用应力,随着使用时间的增加,必然会产生疲劳裂纹。参考同类型结构,对其结构进行了改进,改进后的模型在静、动态性能上都有所提高,经过试验能够满足其工作需求。

After a period of use,the steering cylinder base of 830E mining trucks,which is used by Shenhua north victory energy company,are prone to crack.In this paper,we have used ANSYS software to carry on the analysis and improve the situation mentioned above.First,use Pro/E software to establish the geometric model of steering cylinder based.Import the geometric model into ANSYS software and execute static analysis and modal analysis.The analysis was informed that the alternation stress at the joint of steering cylinder base pin hole part and its base plate is greater than the permissible stress of the material,with the increasing of using time,fatigue cracks will occur inevitably.Reference the structure with same type,we have improved the structure,the model’s static and dynamic performance is improved and can meet the job requirements.