The structure of the truck's walking device is very complex and the operating environment is complex and variable. The study of the walking mechanism of truck-type tractors is divided into two sides, one linked to the truck or to its operation, the other to the suspension system of the walking mechanism. Since the appearance of the movement mechanism of trucks, we began to study the relationship between the surface functions of trucks. Shortly after the birth of steam cars, at At the beginning of the 1830s, these were too heavy and sank easily on soft roads. I look forward to the next stage of the car which will be able to trace its course.the performance and performance of the first truck has decreased and the design of the truck has not seen any significant improvement for a long time. In 1901, loombard (United States of America) invented the first more efficient truck during the development of a forestry tractor. At the time, epidemiological studies of vehicle surfaces had not been carried out and the design of the trucks did not take into account the interactions between the ground and the vehicles.had not been carried out and the design of the trucks did not take into account the interactions between the ground and the vehicles.had not been carried out and the design of the trucks did not take into account the interactions between the ground and the vehicles.