The supporting wheel is one of the four wheels of the crawler construction machinery chassis, and its main function is to support the excavator andBulldozerThe weight of the track moves along the wheel. The number and arrangement of supporting wheels should be conducive to the uniform distribution of track grounding pressure. The agricultural walking mechanism works mostly in mountainous or hilly areas, the road surface is mostly dirt road, the crawler device needs a smaller average grounding specific pressure, and the pressure of the supporting wheel should be evenly distributed.