Design of multifunctional lifting and climbing trailer
                                                            DONG Zhiyang1, WANG Qixuan2, WANG Feng3
（1.High School Affiliated to BIT, Beijing 100089, China; 2.Chaoyang Future School of Affiliated Middle School of Peking University, Beijing 100080, China; 3.School of Automation, Beijing Institute of Technology, Beijing 100081, China）

Abstract: Aiming at the heavy structure, complex operation and physical consumption of the existing daily and production trailer equipment, a sixdegreeoffreedom multifunctional trailer were designed. The structure and working principle of the designed multifunctional hand trailer were analyzed. The advantages of the new type of trailer in structure and the characteristics of its working mode were discussed. The rationality of the design of key structural components was analyzed and verified by finite element method. On the basis of setting up the control hardware framework, the trailer hardware system based on DSP 56F8037 control, DC motor driving and CAN bus communication was designed. Finally, the performance of multifunctional hand trailer in noload and with load was tested by experiments. The experimental results show that the designed multifunctional hand trailer can effectively carry more than 40 kg, and can improve the efficiency of workers by more than 20% in the process of climbing and lifting goods. It has the advantages of simple structure, high efficiency, timesaving and powersaving.

Key words: multifunctional trailer; structural design; finite element analysis; hardware design; prototype experiment