Parameter Optimization And Experimental Study Of The Mechanical And Electrical Control Box Suspension Damping System

Roadheader is a kind of integrated mechanized excavating equipment that widely used in coal mining,tunnel construction and mining fields of tunneling equipment.With the continuous development of mechanized production,the national standard of industrial vibration and noise has been continuously improved,and the severe vibration and noise problem of roadheader has become the key problem that restricts the improvement of its quality.This thesis is based on the Jincheng science and technology program".Taking a certain type of roadheader as the research object,the design of the damping element of the electronic control box is studied.The purpose of this paper is to reduce the vibration of the roadheader frame to the electric control box by taking the mechanical and electrical control box damping suspension system as the research object.After the field visits,the existing electric isolator for investigation and research,according to the relevant theory and the kinetic theory of rubber,has established 6 degrees of freedom vibration model of the tubular rubber damper;the original driving electrical control box damping suspension system of coupled vibration analysis using energy decoupling method,the calculation results show that the the decoupling degree is limited,the system related parameters need to be optimized.After determining the distribution range of the natural frequency of the damping system,the constraints on the variation range of the stiffness parameters of the damping element are also presented.The decoupling degree of each order natural frequency of main vibration direction of the system as the object,using the MATLAB optimization toolbox of damping element three stiffness parameters are optimized,the distribution of natural frequency of the system after optimization is more reasonable,the degree of vibration decoupling is also improved.In order to verify the feasibility of the optimization,compared to the original vehicle test shock absorber damper and improved,the improved isolator reduces the tunneling machine vibration energy transmission to the control box,electrical components of the electric cabinet for better protection.