不同物料流对皮带机转载点的振动冲击分析与研究  

VIBRATION AND SHOCK ANALYSIS AND RESEARCH OF DIFFERENT MATERIAL FLOWS ON TRANSFER POINT OF BELT CONVEYORS

作　　者：卢进南[1] 黎洛 丁文宇 刘扬 LU JinNan;LI Luo;DING WenYu;LIU Yang(School of Mechanical Engineering,Liaoning University of Engineering and Technology,Fuxin 123000,China)

机构地区：[1]辽宁工程技术大学机械工程学院,阜新123000

出　　处：《机械强度》2024年第5期1045-1052,共8页Journal of Mechanical Strength

基　　金：新疆维吾尔自治区自然科学基金面上基金项目(2022D01A322);新疆露天矿智能生产与管控重点实验室(XJQY2007)资助。

摘　　要：选煤厂带式输送机转载点处两皮带有一定高度差,受上端面煤块大小、含水量等因素影响,会对皮带机造成不同程度的振动冲击,从而影响皮带机带身及托辊的使用寿命。为探究物料流对转载点振动冲击的影响,结合现场调研及相关理论,推出落料冲击的影响因素主要为物料流粒度级别和含水量。然后利用光纤振动传感器、数据采集卡等器材和Labview测试系统进行现场试验,将落料口下方带式输送机在不同物料流冲击下的振动信号进行采集和处理,试验结果表明,不同粒度物料流对转载点振动冲击不同,小粒度物料流对转载点的振动波形峰值为大粒度物料流的20%,自功率谱波形峰值为0.625%;不同含水量对转载点振动冲击不同,含水量少的物料流对转载点的振动波形峰值为含水量多物料流的60%,自功率谱波形峰值降低为45%。研究结果可为降低皮带机转载点振动冲击提供合理的方法。There is a certain height difference between the two belts at the transfer point of the belt conveyor in the coal preparation plant.Affected by factors such as the size of the coal block on the upper end face and the water content,it will cause different degrees of vibration impact on the belt conveyor,thus affecting the service life of the belt conveyor body and the roller.In order to explore the influence of the material flow on the vibration impact of transfer point,combined with field investigation and related theories,it was concluded that the main influencing factors of blanking impact are material flow particle size level and water content.Then,the field test was carried out by using optical fiber vibration sensor,data acquisition card and Labview test system.The vibration signals of the belt conveyor under the blanking port under the impact of different material flows were collected and processed.The test results show that the vibration impact of different particle size material flows on the transfer point is different.The peak value of the vibration waveform of the small particle size material flow on the transfer point is 20%of the large particle size material flow,and the peak value of the self-power spectrum waveform is 0.625%.Different water content has different vibration impact on the transfer point.The peak value of the vibration waveform of the material flow with less water content is 60%of the material flow with more water content,and the peak value of the self-power spectrum waveform is reduced to 45%.The research results provide a reasonable method for reducing the vibration impact of the belt conveyor transfer point.

关 键 词：带式输送机 转载点 振动冲击 光纤振动传感 

分 类 号：TD57[矿业工程—矿山机电]