Research And Engineering Practice On Suspension System Of 120T Hybrid Power Frame Transporter

The rapid development of the metallurgical industry has brought new opportunities for the development of heavy machinery transport vehicles.The development of the steel industry is also more diversified and personalized.Therefore,the production of heavy transport vehicles is no longer limited to traditional ones.Design.Yanshan University research team,Qinhuangdao Tianye Tonglian Heavy Industry Technology Co.,Ltd.and Dalian Huarui Heavy Industry Coke oven Vehicle Equipment Co.,Ltd.cooperated to research and design a frame transport vehicle used in the factory.In this paper,the mechanical analysis and structural optimization of the suspension mechanism of the frame transport vehicle are carried out.The simulation analysis and experimental research on how to improve the lifting synchronization precision of the suspension system and the automatic leveling accuracy of the vehicle body are carried out to improve the safety of the transportation process.Significance.Firstly,according to the performance requirements of the whole vehicle,the vehicle battery pack is designed with the motor-driven power system,lifting and steering hydraulic system,which can meet the basic requirements of long cruising range,low pollution and flexible operation.A series of auxiliary safety designs have been carried out on the vehicle to ensure the basic safety of the vehicle operator.Then the static and dynamic analysis of the suspension mechanism and frame of the vehicle in ANSYS finite element analysis software.The static analysis results show that the stiffness and strength of the above structures meet the requirements,and the dynamic analysis results of the frame are the operators.It provides the basis for safe operation;multi-objective optimization of the suspension mechanism based on genetic algorithm,and the optimization result makes the suspension structure more reasonable,Under certain constraints,the hydraulic cylinder has the highest lifting height when the force is minimum.Finally,the AMESim modeling analysis of the suspension hydraulic system is carried out.The control strategy is studied for the existence of synchronization error in theascending hydraulic cylinder during the ascent and the static position error at the end of the rise.The fuzzy PID control method is adopted to improve the vehicle.The synchronization accuracy of the suspension system improves the attitude leveling accuracy of the carrier platform.The joint simulation of AMESim and MATLAB/Simulink for the suspension hydraulic system verifies the feasibility of the control strategy.Finally,field experiments were carried out to verify that the control strategy has a significant effect on improving the synchronization accuracy of the vehicle and improving the attitude of the vehicle.It has practical guiding significance for the production of frame transport vehicles.