Chassis for multifunctional small crawler combine

The utility model relates to a chassis for a multifunctional small crawler combine. The chassis which is composed of a machine frame, an engine, etc. is characterized in that the machine frame is composed of left and right main vertical beams and front, middle and back cross beams, wherein, the left vertical beam is a horizontal rectangular frame longitudinal beam. The engine is arranged on the machine frame arranged between the front and the middle cross beams. The machine frame can be provided with a harvesting device, the lower part of the front cross beam of the machine frame is provided with a scraper blade bracket, and the back cross beam of the machine frame is provided with an auxiliary power output mechanism or a farm implement traction mechanism. The chassis not only can be used for the combining harvesting of crops, but also can be used as a power for a general farm implement. When provided with a rubber crawler, the utility model can be used for the operation in paddy fields; when provided with a steel crawler, the utility model can be used for the operation in dry land.