The robot motion trajectory may have some debris such
as newspapers, magazines and toys. These obstacles may hinder the robot stably move to the destination. Compared to the wheel structure, the crawler structure has some characteristics, such as large support area, small ground pressure and rolling resistance, good off-road mobility, etc. In addition, there are track grousers in the crawler support surface, which make the robot hardly slip. Choosing the crawler structure design helps the robot increase the
performance of crossing over obstacles, safely arriving at the designed position.