The buffer spring of the rubber track chassis tensioning device has a certain amount of preload, which generates pre tension force in the track. Its function is to not be affected by slight external forces when moving forward, and to generate sufficient traction to ensure the normal meshing of the track pin and the driving gear teeth.

Due to the recoil effect of the device, the tensioning spring is pressed against the guide wheel on the right side to maintain a certain tension state during operation, thereby guiding the track tensioning guide wheel.

The main function is to cooperate with the tensioning device to achieve elastic tensioning of the track. Due to the function of the tensioning device, the tensioning effect is achieved by pushing the guide wheel through the spring. Therefore, compression and tension springs can be selected.