Dynamic Analysis And Mechanism Optimization Design For Working Device Of Tunnel Wall And Acoustic Barrier Comprehensive Cleaning Vehicle

Currently,most tunnel wall cleaning vehicles and acoustic barrier cleaning vehicles existing in the market have a single function and low cleaning efficiency.If different cleaning tasks are to be completed,road maintenance companies need to purchase a variety of cleaning equipment,which will greatly increase the company's acquisition costs.Therefore,in order to satisfy different kind of cleaning objects,improve cleaning efficiency,reduce enterprise purchase cost,and meet current market demands,a multifunctional comprehensive cleaning device capable of simultaneously cleaning tunnel walls and acoustic barriers needs to be designed.The research of this article relies on the Development of Comprehensive Cleaning Equipment of Road acoustic Barrier and Tunnel project of the Department of Transport of Shaanxi Province.By comparing the different types of tunnel wall cleaning vehicles and acoustic barrier cleaning vehicles,according to the current development trend of tunnel walls and acoustic barrier cleaning vehicles,and combining the common ground of both,a comprehensive cleaning vehicle for tunnel walls and acoustic barriers was designed,and the static analysis,dynamic analysis,and finite element analysis of the working device were performed under different working conditions.(1)The designed cleaning vehicle working device adopts the layout of the front suspension and the structure of multiple folding arms.According to the different kind of cleaning objects,single brush and double brush working devices were designed respectively,and three-dimensional modeling was performed in Solidworks.(2)The static analysis of the working device of the cleaning vehicle under different working conditions was carried out and solved in MATLAB to obtain the force of each hinge point under different working conditions,which provided the parameter basis for the finite element analysis of the single component.(3)Using virtual prototype technology,the ADAMS software was used to analyze the kinematics and dynamics of the cleaning vehicle working device,and the operating parameters such as the maximum cleaning height,the maximum cleaning distance,and the minimum cleaning height of the cleaning car working device were obtained,as well as the hydraulic cylinders.Force.According to the results of the dynamic analysis,an optimization model for the hinge position of the working device of the cleaning vehicle is established and solved using the MATLAB genetic algorithm toolbox.The optimization results showed that the force of the hydraulic cylinder 4 after optimization was reduced by 46% compared with that before optimization.(4)In ANSYS,the strength analysis of the working device under different operating conditions was carried out.The stress concentration area of each component was obtained and an improvement scheme was proposed for the components with insufficient strength according to the analysis results.Finally,the cleaning vehicle working device satisfying the strength requirements was obtained.