摘要
针对自动扶梯运行过程中经常产生的异常噪音、梯路振动问题,对自动扶梯传动系统振动、振动频率、张紧问题进行了研究。首先,采用频谱分析方式分析了自动扶梯运行中出现的振动频率和谐波频率情况,与理论频率相对照,分析并寻找了异常振动频率的来源;然后,对可能的振动源做了进一步验证,并对确定的振动源进行了调整,根据振动测试结果判定了调整方法是否有效;最后,设计了一款便于观察和调整的主驱动链条张紧装置,其不仅改善了振动状态,而且可以在链条断裂状态下起到安全保护作用。研究结果表明:基于各振动源的固有频率和谐波频率,将实际频率与其相对照,可以快速确定振动源;对识别出的确定振动源有针对性地进行了调整,振动值最大降低了61.5%,提高了自动扶梯测试效率;使用张紧装置后,噪音降低达3.3 dB(A),有效改善了主驱动链条振动状态,提升了运行质量。
A study was conducted on the vibration,frequency,and tension issues of the escalator transmission system in response to the abnormal noise and vibration problems that often occur during the operation of the escalator.Firstly,the frequency spectrum analysis method was used to analyze the vibration frequency and harmonic frequency that occur during the operation of the escalator.Comparing with the theoretical frequency,the source of abnormal vibration frequency was analyzed and identified.Then,the possible vibration sources were further verified,the determined vibration sources were adjusted,and whether the adjustment method was effective based on the vibration test results was determined.Finally,a main drive chain tensioning device was designed for easy observation and adjustment,which not only improved the vibration state but also provided safety protection in the event of chain breakage.The research results indicate that based on the natural frequency and harmonic frequency of each vibration source,the actual frequency can be compared with it to quickly determine the vibration source.Targeted adjustments are made to the identified vibration sources,resulting in a maximum reduction of 61.5% in vibration values and improving the efficiency of escalator testing.After using the tensioning device,the noise is reduced by 3.3 dB(A),effectively improving the vibration state of the main drive chain and enhancing the quality of operation.
作者
杨天玲
朱蔷
刘菲
YANG Tianling;ZHU Qiang;LIU Fei(Institute of Intelligent Manufacturing,Zhejiang Institute of Mechanical&Electrical Engineering,Hangzhou 310053,China)
出处
《机电工程》
CAS
北大核心
2024年第6期1068-1074,共7页
Journal of Mechanical & Electrical Engineering
基金
浙江省省级课程思政教学项目(浙教函[2022]51号)
浙江省教育厅高校国内访学访工项目(FG2023063)。
关键词
机械振动
自动扶梯传动系统
异常噪音
频谱分析
主驱动链条张紧装置
振动频率
mechanical vibration
escalator transmission system
abnormal noise
spectrum analysis
main drive chain tensioning device
vibration frequency
