摘要
通过建立掘进机电控箱的力学模型,分析了机架底板受到简谐振动作用时电控箱的振动响应。通过对系统进行瞬态仿真,得出掘进机在水平工况作业时,电控箱的竖直方向速度和加速度响应最大;另外,通过对电控箱、基础以及隔振垫用螺栓紧固后的系统进行谐响应分析,得出在不同频率的激振载荷作用下,电控箱各端点始终对竖直方向的振动激励最敏感,并且得到了系统的固有频率。
By establishing a mechanical model of the tunnel's electromechanical control box,the vibration response of the electrical control box when the chassis floor is subjected to a simple resonance action is analyzed.Through transient simulation of the system,it is concluded that the vertically speed and acceleration response of the electric control box is the largest when the roadheader is operating in horizontal conditions.In addition,through the harmonic response analysis of the bolted system of the electric control box,the foundation and the vibration isolation pad,it is concluded that under the action of the excitation load of different frequencies,each end of the electric control box is always the most sensitive to vertical vibration excitation.And the natural frequency of the system is obtained.
作者
陈君宇
张宏耀
CHEN Jun-yu;ZHANG Hong-yao(Xishan Coal Electricity Group Xiqu Coal Mine,Gujiao 030200,China)
出处
《机械工程与自动化》
2020年第2期108-110,共3页
Mechanical Engineering & Automation
关键词
掘进机
电控箱
减振设计
roadheader
electric control box
vibration reduction design
