摘要
从齿轮传动机理出发,考虑直齿轮局部故障对啮合振动的调幅调频作用,建立了直齿轮局部故障振动信号模型;在直齿轮局部故障模型的基础上,分析了行星齿轮结构特征及振动信号产生和变化规律,建立了行星齿轮局部故障振动信号模型。对带有不同齿轮局部故障的摇臂进行加载试验,对采集的试验振动信号进行了频谱分析,分析结果表明,所建立的齿轮故障振动信号模型能客观、准确地反映摇臂齿轮故障状态,应用频谱分析方法可实现摇臂齿轮局部故障诊断。
A partial failure vibration signal model of spur gear was established starting from gear drive mechanism and considering both amplitude modulation and frequency modulation effects of meshing vibration due to partial spur gear damage.Based on partial failure model of spur gear,structure feature of planetary gear and vibration signal generation and changing rule were analyzed,and partial failure vibration signal model of planetary gear was established.Load test of rocker arm with different gear partial failures and spectrum analysis of collected vibration signal were conducted,the results show that the model of gear fault vibration signal model can objectively and accurately reflect failure state of rocker gear,and using the method of spectrum analysis can achieve partial failure diagnosis of rocker gear.
出处
《工矿自动化》
北大核心
2016年第7期34-39,共6页
Journal Of Mine Automation
基金
山西省科技重大专项项目(20131101029)
关键词
采煤机摇臂
直齿轮
行星齿轮
局部故障
振动信号
频谱分析
shearer rocker arm
spur gear
planetary gear
partial failure
vibration signal
spectrum analysis
