Structure Design Of High Speed Handling Robot For Lightweight Materialbox And Structural Reliability Analysis In Dynamic Environment Abstract

Based on the high-speed sorting system of light and small parcels in warehouse or logistics center,this paper designs a mobile robot for the task of material box handling in the high-speed sorting system for light and small parcels.Specific work is as follows:The structural design requirements of the robot is clarified,and the modular design concept is adopted to design the robot’s rudder wheel,container fixing and lifting mechanism,robot chassis and other modules respectively.The three-dimensional modeling of the light material box handling mobile robot is carried out with SolidWorks.The static analysis of the chassis,steering wheel and and of the mobile robot are carried out,and the strength and stiffness of the parts mentioned above are checked by the finite element analysis technology.In order to study the motion stability of the lightweight container handling mobile robot in the uneven ground environment,the paper constructs a rigid-flexible coupling virtual prototype model and ground simulation environment of the lightweight container-handling mobile robot.The virtual prototype technology is used to analyze the robot’s longitudinal forward movement,lateral movement and in situ rotation movement,and to verified the motion stability of the lightweight container-handling mobile robot.In order to check the reliability of the structure of the mobile robot in the environment of random vibration with high frequency and small amplitude for a long time,the random vibration of the chassis of the mobile robot and the material box center obtained by motion simulation is used as an incentive signal to analyze the random vibration of the chassis,arm and L-shaped support plate in the steering wheel of the mobile robot.The dynamic strength characteristics of the above-mentioned key parts of the robot are checked by finite element analysis technique.The prototype processing and assembly of the designed lightweight container handling mobile robot are carried out,and the experiments of the robot longitudinal forwar-d movement,lateral movement and in situ rotation movement are carried out.The motion test of the lightweight container handling mobile robot prototype verifies the motion stability of the robot under light load condition.In addition,through the processing and motion testing of the prototype of the mobile robot,the shortcomings of the robot are studied,and the corresponding improvement direction is given.