Crawler tractor also called “chain track tractor” or “crawler tractor” is a kind of tractor. The walking device is composed of a guide wheel, a driving wheel, a supporting wheel, a driving wheel and a track. During operation, the driving wheel circulates around the track, and the supporting wheel rolls forward or backward on the track of the track. Working advantages: low grounding ratio, soil protection, large traction force, deep turning heavy load operation advantages, high efficiency, through and climbing ability, high operating comfort, utilization and maintenance convenience Excellent quality makes you handy