The working conditions of the triangular track chassis are harsh, with sufficient strength and rigidity, good wear resistance requirements, and light weight to reduce metal consumption and reduce dynamic loads during track operation. The track and ground should have good adhesion performance to ensure sufficient traction, and consideration should be given to reducing driving and steering resistance. On tracked operating machinery, most drive wheels are arranged at the rear. The advantage of this arrangement is that it can shorten the length of the track drive section, reduce the friction loss at the track pin caused by the driving force, extend the service life of the track, and prevent the lower part of the track from arching, avoiding the danger of track detachment during steering and improving the efficiency of the walking system. The height of the driving wheel should be conducive to reducing (or increasing) the height of the vehicle body and increasing the length of the track contact and adhesion performance, so the height of the driving wheel should be as small as possible.