Mechanical Property Analysis And Structure Optimization Of A Car C-type Lifting Appliance

The mechanized line body of the traditional automobile production line adopts the most primitive form of suspended accumulation chain transportation,and the suspension of the automobile sling is realized by impact,causing the sling and the track to inevitably shake.At the same time,the production line has undergone multiple transformations due to the incorporation of vehicle models.The overall steel structure has undergone a large amount of change and its carrying capacity has decreased.How to achieve model transformation and productivity increase on the original production line,shorten the research and development cycle,reduce research and development costs,and improve design quality is one of the current research hotspots of auto companies.Finite element calculation analysis and structural optimization are effective means to realize the safety and reliability of its key structure(C-type lifting appliance).In this paper,modeling software and programming language are used to analyze the mechanical performance and structure optimization of the automobile C-type lifting appliance based on the finite element method.Through the finite element modeling and full-condition calculation of the car spreader,the dangerous working conditions and the dangerous points of the components of the car C-type lifting appliance in the process of hoisting the vehicle are obtained,and the weak structure of the car C-type lifting appliance is reinforced design.Combining the field test data and the finite element calculation results,the optimized design of the car’s C-type lifting appliance is realized.The specific works are as follows:(1)The establishment of the finite element calculation model was completed based on the original digital model provided by the manufacturer and the data measured on site.(2)According to the load and actual working conditions provided by the manufacturer,the finite element model was simplified,the hoisting process of the car C-type lifting appliance was simulated,and the dangerous point of the structure was found,which is the weak position of a C-type lifting appliance.Provide basic data for reinforcement.(3)Carry out on-site data collection,follow-up testing of all working conditions,and record the time points of each typical working condition.Through the analysis of the data,the dynamic load factor at the moment of impact during the assembly process of the C7 and C8 hybrid models were obtained.(4)Determine the dangerous parts,and optimize the corresponding parts based on the strength and stiffness standards of the automobile C-type lifting appliance,so that it can meet the requirements of the production of C8 hybrid models,and provide effective data for the structural optimization of the same type of spreader support.After a series of analysis and research,this paper verifies the structural strength and rigidity of the automobile C-type lifting appliance in the production process of the C7 model.Through finite element analysis and on-site measurement,an improved reinforcement plan for the automobile C-type lifting appliance is proposed.It provides a theoretical basis for the research on the improved design and dynamic characteristics of automobile C-type lifting appliances,and also provides technical support for automobile production.