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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.
The internal friction generated by the internal packing of the belt conveyor has an important influence on the dynamic characteristics of the belt.According to the internal friction of the belt, based on the BERG model, a dynamic model of the conveyor belt with internal friction elements Model, the identification method of the internal parameters of the model is given, and the model simulation and verification test are carried out, then the dynamic equation of the belt conveyor system based on the model is deduced.The complex mechanical model of conveyor belt The simulation model of the belt conveyor system is established and the controllable soft start process of the belt conveyor is simulated.The results show that the simulation speed curve is consistent with the starting condition and the tension transmission needs due to the longer conveyor belt Time, and to overcome the resistance along the way, the nose and tail were 0s and 5s, respectively, when the start of acceleration, after about 10s of the crawling section, the velocity curve tends to be smooth; the system reaches the operating speed of 80s 2.5m / s; the maximum value of the tension value of the head and the tail of the conveyor belts are 238.8kN and 59.6kN, respectively, consistent with the actual tension distribution, which proves the correctness of the belt model with internal friction And feasibility.