摘要
为分析轮式装载机动臂参数对不同坡度角下的横向稳定性的影响,以某轮式装载机为研究对象,对满载运输工况下动臂由水平分别转至各个工作位置及动臂外侧厚度变化时的振动模态进行分析,并进一步研究动臂参数对振动特性和动应力特性的影响。结果表明:调节动臂的工作位置对固有频率影响不明显,但增加动臂外侧厚度能明显增加系统各阶固有频率;不同坡度路面下,增加动臂外侧厚度,动臂横向振动RMS值均明显减小,横向稳定性得到改善,且动应力波动趋缓。
In order to analyze the influence of boom parameters of wheel loaders on system vibration characteristics under the action of different road excitation,taking a certain type of wheel loader as the research object,analyzing the vibration modal of whole system when wheel loader under full-load situation with moving arm rotated from horizontal to each working place and the change of lateral thickness of the boom.Further analyzing the influence of boom parameters on system vibration characteristics and dynamic stress characteristics.The results show that there are no obvious influence on the natural frequency of system when change the boom working place,however,increasing the lateral thickness of boom can significantly increase the natural frequencies of the system.Under different road excitation,increasing the lateral thickness of boom cause the RMS of transverse vibration of moving arm decreases obviously,and the lateral stability has been improved,also the fluctuation of dynamic stress is slowing down.
作者
徐向阳
艾星
董绍江
韩洵
XU Xiang-yang;AI Xing;DONG Shao-jiang;HAN Xun(School of Mechatronics and Vehicle Engineering,Chongqing Jiaotong University,Chongqing 400074,China)
出处
《机械设计与制造》
北大核心
2020年第9期132-135,139,共5页
Machinery Design & Manufacture
基金
国家自然科学基金(51775072)
中央高校基本科研业务费资助项目(310825161104)
重庆市基础研究与前沿探索项目(cstc2018jcyjAX0087)
重庆市重大主题专项项目(cstc2017rgzn-zdyfX0038)。
关键词
轮式装载机
动臂参数
动态仿真
振动特性
Wheel Loader
Boom Parameters
Dynamic Simulation
Vibration Characteristics
作者简介
徐向阳,(1981-),男,河南人,博士研究生,副教授,主要研究方向:机械系统动力学;艾星,(1993-),男,江西人,硕士研究生,主要研究方向:机械系统动力学。
