Dynamical model of idler and simulation of wheel's falling-off for triangular tracked

QIAN Yao-yi， HOU Liang， LIN Wen-guang， LIN Sen-quan
（Department of Mechanical and Electrical Engineering， Xiamen University， Xiamen 361005， China）

Abstract： Aiming at the problem of wheel's falling-off for triangular tracked，dynamics simulation technology was investigated. After the analysis of the stress based on the structure of idler，tension device，supporting the wheel and so on，the tension device's dynamic model of idler was established. By using mutibody dynamic software-RecurDyn，the model of triangular track vehicle was developed. Dynamics simulation was established，the influence to tension of the track and the vertical deviation of the anterior supporting wheel through changing the preload parameter of the idler's tension device was analyzed. The results show that the vertical deviation of supporting wheel is reduced effectively by increasing prestressing force suitably. The calculated results are compared with the simulation value，which shows they are reasonable. The results can be used as a reference for optimum of the design phase.
Key words： triangle track； idler； dynamics； wheel's falling-off； RecurDyn； simulation