摘要
液压激振器是矿用振动筛液压系统中最关键的元件,在分析液压激振器工作原理和压力变化规律的基础上开发设计了一种液压脉冲系统,并通过实验测试得到了液压脉冲系统中液压缸有杆腔压力和无杆腔压力的波动规律,证明了压力波动呈周期性变化趋势,其波动频率受激振器激振频率的独立控制,各管路压力波的产生是系统流量波动和水锤耦合作用的结果。液压激振最大振幅随液压系统压力的增加而增加,当液压系统压力超过6 MPa以后最大振幅增加的不是很明显。
The hydraulic exciter is the most important component in the hydraulic system of the mine vibrating screen.Based on the analysis of the working principle and the law of the pressure change of the hydraulic exciter,a kind of hydraulic pulse system was developed and designed.The fluctuation law of the pressure in the rod cavity and the pressure without the rod cavity of the hydraulic cylinder in the hydraulic pulse system was obtained through the experimental test.It is proved that the pressure fluctuation is periodic and its frequency is controlled independently by the vibration frequency of the exciter.The pressure wave of each pipeline is caused by the coupling effect of system flow fluctuation and water hammer.The maximum amplitude of hydraulic excitation increases with the increase of hydraulic system pressure,but it is not obvious when the hydraulic system pressure exceeds 6 MPa.
作者
温禄淳
Wen Luchun(Detection Branch,Shenyang Research Institute of China Coal Technology and Engineering Group,Fushun 113006,China;State Key Laboratory of Coal Mine Safety Technology,fushun 113006,China)
出处
《煤矿机械》
北大核心
2020年第10期10-12,共3页
Coal Mine Machinery
基金
国家自然科学基金项目(50775157)。
关键词
液压脉冲系统
激振器
压力波动
实验测试
hydraulic pulse system
exciter
pressure fluctuation
experimental test
