摘要
为了提高下运带式输送机的运行可靠性,降低撒料、断带、打滑、飞车等事故发生的概率,采用永磁阻尼托辊实现下运带式输送机的平稳制动停车。简述了永磁阻尼装置的工作原理,给出了阻尼力矩的计算方法,建立了阻尼装置完整的三维有限元模型。利用Ansoft Maxwell软件对永磁阻尼装置进行瞬态仿真,得到了永磁阻尼装置的磁场分布特点及气隙、磁极厚度、托辊转速对输出阻尼力矩的影响关系。结果表明,该永磁阻尼阻尼装置能够提供稳定的阻尼力矩输出,有助于下运带式输送机的稳定运行。
In order to improve the operating reliability of the downward belt conveyor and reduce the probability of accidents such as material spilling, belt breakage, skidding and runaway, permanent magnet damping rollers were used to realize the steady braking and stopping of the downward belt conveyor. The working principle of the permanent magnet damping device was briefly described, the calculation method of the damping torque was given, and a complete three-dimensional finite element model of the damping device was established. The transient simulation of the permanent magnet damping device with Ansoft Maxwell software was carried out to obtain the magnetic field distribution characteristics of the permanent magnet damping device and the influence of the air gap, magnetic pole thickness and roller speed on the output damping torque. The results show that the permanent magnet damping damping device can provide a stable damping torque output, which is helpful for the stable operation of the downward belt conveyor.
作者
王亚湖
张亮有
琚超
程建博
刘孟飞
Wang Yahu;Zhang Liangyou;Ju Chao;Cheng Jianbo;Liu Mengfei(School of Mechanical Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,China)
出处
《煤矿机械》
2021年第6期35-37,共3页
Coal Mine Machinery
