Functions of the crawler Combine harvester: the crawler Combine harvester can complete the whole process of harvesting, threshing, cleaning, stubble cutting and bagging at one time. It is easy to operate and flexible, easy to maintain, simple and practical cleaning mechanism, low impurity content, low loss rate, and high efficiency. The chassis has high ground clearance, the crawler can rotate in both positive and negative directions, and can also brake left and right to turn. It has good paddy field trafficability and cross-country performance. The chassis mechanism of this machine adopts a track type drive, with a compact and lightweight structure, and can operate normally in paddy fields with a mud depth of less than 250mm. Without the help of external conditions, it is possible to smoothly climb over soil ridges less than 400mm high. The harvester does not cause any damage to the hard soil layer of the paddy field after harvesting, and the surface of the paddy field is basically flat after harvesting, providing convenient cultivation conditions for the next season. The header, threshing, grain lifting, and cleaning are integrated, with hydraulic lifting and no intermediate conveying device. The structure is simple, the center of gravity of the entire machine is low, and the climbing ability is strong, making it easy to climb up and down the fields; There is a secondary cutting blade installed under the header that can float up and down. The straw is cut and returned to the field, with low cutting stubble, which can effectively overcome damage caused by uneven surface or collision with the field ridge.