Reliability Analysis Of The Frame Of Hydraulic Trailer For The Highway Large-scale Freight Transport

In recent years,with the increase of the national investment in large projects,such as nuclear power,wind power,smelting chemicals,marine engineering and so on,large-scale equipment transport services has become an important basis to ensure the progress of the project as scheduled to advance.Large-scale transport as a special form of transport,the safety of the transport of goods put forward higher requirements,from vehicle selection of the transport of goods to the loading,binding,reinforcement methods of goods,from safety training for operators to the development of the optimal transport plan,which are ensure the safety of large-scale transport from different links and different aspects.As the vehicle body structure of the transport of goods,the reliability of the hydraulic flat frame is the necessary condition to directly ensure the safety of the transportation.Under the influence of many factors and complicated load of the hydraulic flat frame,which will be broken,the irreversible deformation and other dangerous situations if it over own stiffness and strength requirements,resulting in immeasurable loss of transport services.In order to verify the reliability of the hydraulic flat frame,a new method of deformation analysis of the main girder of the frame is established,and the stiffness and strength of the hydraulic flat frame are studied.Based on the theory of material mechanics,superposition principle and statically indeterminate structure research methods,this paper establishes the mechanical analysis model of the main girder of the hydraulic flat frame under complex load,at the same time,according to the superposition principle of force,deduced arbitrary cross section the deflection and bending moment of change model under the m bearing reaction,n hydraulic support force and the gravity of the frame,and compared with ANSYS finite element analysis results to verify the practicality and reliability of theoretical research,the main research contents of the paper are completed:(1)Based on the summary of the transportation technology in the practical operation project,this paper establishes a reliable and practical bearing quantitative selection model and placement optimization model for horizontal containers and non-horizontal containers of conventional goods.(2)Analyzed the stress condition of the hydraulic flat frame and the distribution of the force acting on the main girder,and established the mechanical analysis model.Meanwhile,in this paper,the redundant constraint condition and the static equilibrium condition of the statically indeterminate structure are used to verify the rationality of the bearings selection and optimized the model,and ultimately determined the analysis model of deformation of the main girder.(3)According to the actual operation of the large Fischer-Tropsch reactor transport project to verify the practical value of theoretical research,and the results of the study were compared with the actual operation.(4)With the existing and maturity mechanical analysis method of ANSYS finite element analysis,finished the force frame modeling and simulation analysis,the results were compared with the theoretical study calculation results,to verify the feasibility of theoretical research.The reliability analysis of the main girder of the hydraulic flat frame has further improved the mechanical theory research system for the safe transportation in the large-scale cargo,and provided a reliable theoretical basis for the analysis of the stiffness and strength of the transport frame.