纵轴式掘进机截割人工岩壁的振动试验研究

Study on Vibration Experiment of Artificial Rock Wall Cutting with Longitudinal Shaft Type Mine Roadheader

为解决纵轴式掘进机截割硬岩时振动幅度较大的问题,对其振动特性进行了试验研究。通过建立人工岩壁和试验测试系统,并按照实际工况及不同工作参数,对EBZ315纵轴式掘进机进行截割人工岩壁的振动试验研究。对振动数据从时域与频域进行了进一步的分析,结果显示,EBZ315纵轴式掘进机截割普氏系数为8的硬岩时局部加速度最大不超过6g(g为重力加速度),整体振幅较小,各部件不存在共振现象,说明该掘进机稳定性好,截割能力富余,可以经济地应用于硬岩巷道掘进。

In order to solve the high vibration range problem of the hard rock cutting with the longitudinal shaft type mine roadheader,an experiment study was conducted on the vibration features.With the establishment of the artificial rock wall and the experiment measurement and test system and according to the actual performances and different operation parameters,a vibration test study on the artificial rock wall cutting with the EBZ315 longitudinal shaft type roadheader.A further analysis was conducted on the vibration data from time domain and frequency domain.The results showed that when the EBZ315 longitudinal shaft type roadheader was cutting hard rock with Protodyakonov coefficient of 8,the max local vibration amplitude would be not over 6g,the integrated vibration amplitude would be small and there was no resonance phenomenon between each parts.All above showed that stability of the mine roadheader was good,the cutting capacity was sufficient and the mine roadheader could be economically applied to the heading of the mine hard rock roadway.