Abstract: The problems in the field operation of the small whole stalk sugarcane harvester were considered, such as high rate of broken head, unstable cutting quality and large vibration of cutter head. The displacement and acceleration sensors were used to collect and analyze the vibration signals of cutter head and vibration source. Therefore, the influence degree of vibration intensity of different test points on the rigidity of cutter head joint was obtained. Then, combined with the vibration test system, the main frequency of cutter head vibration was measured by FFT. Finally, considering the cutting quality and stability of the harvester, the optimal design scheme for the assembly of cutter head, leaf stripper, frame and gearbox was proposed. It could provide reference for the improvement of the small whole stalk sugarcane harvester.

Key words: small whole stalk, sugarcane harvester, vibration, FFT, optimal design