一种包含内摩擦的输送带动态特性研究  

Research on conveyor belt′s dynamic characteristic with internal friction

作　　者：胡坤[1,2] 郭永存[2] 王鹏彧[2] 程刚[2] 

机构地区：[1]安徽理工大学煤矿安全高效开采教育部重点实验室,安徽淮南232001 [2]安徽理工大学机械工程学院,安徽淮南232001

出　　处：《中国矿业大学学报》2012年第4期669-674,共6页Journal of China University of Mining & Technology

基　　金：安徽省科技攻关项目(08010202136);安徽省教育厅重点项目(Kj2011A092);安徽省高校优秀青年基金重点项目(2009SQRZ061ZD)

摘　　要：带式输送机输送带内部填充物产生的内摩擦对输送带的动态特性有着重要的影响.考虑输送带的内部摩擦力,以BERG模型为基础,提出了一种包含内摩擦元件的输送带动力学模型,给出了模型内部参数的识别方法,并进行了模型仿真与验证试验,进而推导出了基于该模型的带式输送机系统动力学方程.在AMEsim软件环境下将复杂的输送带力学模型转化为超级元件,建立带式输送机系统仿真模型,并对带式输送机可控软起动过程进行了仿真.结果表明:仿真速度曲线与起动工况相符,由于输送带较长,张力传递需要时间,并且要克服沿程阻力,机头部与机尾部分别在0s和5s时开始起动加速,经过约10s的爬行段后,速度曲线趋于平滑;系统于80s时达到运行带速2.5m/s;机头部和机尾部输送带张力值最大值分别为238.8kN和59.6kN,与实际张力分布规律一致,证明了包含内摩擦的输送带模型的正确性与可行性.Internal friction force, which is generated by the internal filling materials of conveyor belt, has a significant impact on dynamic characteristics of the belt. Considering the internal friction force of the conveyor belt, a conveyor belt dynamic model including internal friction el- ement was proposed based on BERG model, and a method for recognizing its parameters also given. Then the model simulation and the verification test were carried out. The dynamic sys- tem equation of the belt conveyor system based on the new conveyor belt dynamic model was derived. In the AMEsim software environment, the belt conveyor system model was built with the super component replacing the complex belt model, and the controllable soft-start process of belt conveyor system was simulated. The results show that the velocity curves accords with the starting condition and the belt tensions of the conveyor＇s head and tail are consistent with the theoretical calculation. Because of long belt, tension transmission time and resistance along the conveyor, the head and tail of conveyor belt start at 0 s and 5 s respectively. After passing through 10s constant velocity section, the velocity of belt conveyor achieves 2. and the maximum tensions in the head and tail are 238.8 kN and 59.6 kN,w with the actual tension distributed rule. The validity and feasibility of the be ternal friction are proven. m/s after 80 s, ch is eonsistent model with internal friction are proven.

关 键 词：带式输送机 输送带 内摩擦 动力学模型 AMESIM 

分 类 号：TD528[矿业工程—矿山机电]