Having sufficient strength and stiffness, good wear resistance requirements, lightweight to reduce metal consumption and reduce dynamic loads during track operation, good adhesion between the track and the ground to ensure sufficient traction, and consideration for reducing resistance during driving and steering. The buffer spring of the tensioning device has a certain preloading amount, which generates a pre tensioning force in the track. Its function is to not affect the meshing between the track pin and the driving gear teeth due to slight external forces when moving forward, and to generate sufficient traction force to ensure the normal meshing between the track pin and the driving gear teeth. The front and rear positions of the guide wheel are determined by the position of the drive wheel and are usually arranged at the front. The guide wheel is used to guide the track to rotate correctly, which can prevent deviation and deviation. The height of the guide wheel above the ground should be conducive to reducing