Spatial Layout Optimization Of On-board Rescue Equipment For Small Fire Trucks

Fire trucks play a great role in today’s society.They escort people’s life and property safety.With the development of society,the scale of buildings is increasing and traffic is becoming more and more congested.The traditional large fire trucks can not reach the fire on time to a certain extent through difficulties,and at the same time can not do road patrol work.In order to solve these problems,people began to study small fire trucks.At present,the popularity of small fire trucks in China is low,and the layout of their internal working space is confused.The space layout of fire-fighting equipment on small fire-fighting trucks affects the efficiency of firefighters and the safety of vehicles.Therefore,the space layout of small fire-fighting trucks has great development prospects.Aiming at this problem,this paper combines human factor engineering and vehicle handling stability analysis to analyze a small fire engine and optimize its fire equipment layout space.The main research contents are as follows:(1)SOLIDWORKS2016 software was used to build the three-dimensional model of the original working layout space of the selected small fire truck,and to analyze the vehicle load,the center of gravity and the equipment layout,which provided the basis for the rational spatial layout.(2)A mathematical model was constructed by restraining the center of gravity and interferometric constraints of the scheme to be redesigned,which solved the problem of unstable center of gravity and made the position of the center of gravity of the whole vehicle more reasonable after optimizing the spatial layout.(3)According to the principles of anthropometry and equipment layout in human factors engineering,the frame of the cloth space was designed,and the upper and lower limits of the height of the partition plate and the height of the person’s direct eye were calculated,and the visible field was obtained by JACK software.The simulation of Da domain has reduced the fatigue of firefighters and improved work efficiency.(4)Three design schemes were proposed through the above constraints to design the space to be deployed,and the three-dimensional structure of its spatial layout framework and fire fighting equipment was constructed by SOLIDWORKS.The center of gravity of the whole vehicle was calculated under the conditions of manned full load,unmanned full load,manned no load and unmanned on load for each scheme.Weighted factor analysis was used to select the best scheme and select the one with the highest score.(5)The optimal scheme was used to analyze the vehicle driving stability,and the lateral stability analysis and the longitudinal stability analysis were carried out respectively.By comparing the calculated results with the national standards,it was found that the results met the national standards.(6)ADAMS software was used to analyze the handling and stability of the small fire truck.First,the steering wheel angle step input analysis was carried out.By processing the curve,the evaluation score was 98.4,which was in line with the national standard.The snake-like simulation analysis was carried out,and the score was 79.38 from the processing of the analysis image,which was in line with the national standard.The scheme has been applied to the actual layout,and the actual operation is good.