中文摘要：

工作面刮板输送机是关键的煤矿综采设备之一,其采用圆环链传动实现对开采煤炭的输送,具有大载荷、高功率、长距离等特点。通过有限段法将刮板输送机的圆环链传动系统离散成Kelvin-Vogit模型,重点考虑其纵向动力学特性,利用Matlab/Simulink建立考虑链传动预紧力和双电动机驱动的系统动力学仿真模型。基于非线性有限元软件Abaqus分析链轮和链环的接触特性,并得到纵向动力学模型所需的链轮和链环的刚度系数。针对刮板输送机链传动系统的满载启动、自由停机和卡链等工况进行动力学仿真计算,计算得到了确保链条张力大于0所需的最小预紧力和链条预紧力对链条张力、速度等参数的影响。为刮板输送机链传动系统关键部件的优化设计和参数匹配提供理论依据。

英文摘要：

Armoured face conveyor is a key component of the comprehensive mechanized coal mining equipments.The ring chain transmission system is adopted to transport material from the coal face which has the characteristic of heavy duty,high power and long distance.By finite segment method and Matlab Package,the ring chain transmission system is discretized into the Kelvin-Vogit model to study its longitudinal dynamic behavior,and in the dynamic model,predefined force of the chain and two driven motor is considered.The contact model of sprocket and chains are established based on nonlinear finite element analysis via Abaqus package,and thus the stiffness coefficients of the sprocket and chain which are requisite for the dynamic model are got through the analysis.The start-up,power off and chain jam conditions of the armoured face conveyor are simulated by the model with the affects of pretension force.The minimum pretension force,dynamic tension and velocity of the chain are obtained.The methodology and simulation results help to improve the design of the machine and also offer the theoretical guide for parameter selection and match.