综掘巷道超前支护装置支撑态动力学特性仿真研究

SIMULATION STUDY ON DYNAMIC CHARACTERISTICS OF SUPPORTING STATE OF ADVANCE SUPPORTING DEVICE FOR FULLY MECHANIZED ROADWAY

为提高综掘巷道的超前支护装置工作时的动力稳定性,针对其支撑态动力学特性仿真进行了研究。根据超前支护装置的结构和工作原理,利用拉格朗日方法,建立支护设备全支撑状态多自由度振动系统的动力学模型。建立模拟动力扰动下超前支护系统的仿真模型,为单组支架和整机模型施加扰动函数,基于Ansys分析软件进行了单组支架和整机不同状态时模态分析,分别得到不同状态的前6阶模态参数并进行对比分析。在模态分析基础上使用模态叠加法进行单组支架和整机的谐响应分析,研究其动力响应特性。对比整机和单组支架的谐响应分析结果,得到推移机构对提高超前支护装置适应性和工作稳定性有重要作用。

In order to improve the dynamic stability of the advanced supporting device of the roadway,This paper studies the simulation of its support state dynamics.According to the structure and working principle of the supporting equipment,the Lagrangian method is used to establish the dynamic model of the multi-degree-of-freedom vibration system of the fully supported state of the self-moving support equipment.Establish a simulation model of the pre-support system under simulated dynamic disturbance,and apply a disturbance function to the single-group bracket and the whole machine model,Based on the ANSYS analysis software,the modal analysis of the single-group bracket and the whole machine in different states was carried out,and the first 6-order modal parameters of different states were obtained and compared.On the basis of modal analysis,the modal superposition method is used to analyze the harmonic response of single-group support and the whole machine,and its dynamic response characteristics are studied.Comparing the harmonic response analysis results of the whole machine and the single set of brackets,Getting the moving mechanism plays an important role in improving the adaptability and working stability of the advanced support device.