Based on the actual structure and vibration model of the sunflower combine harvesters (SCH), the three different design cases, including Case 1-Original design of the SCH, Case 2-The rubber mounts added to the cab frame, and Case 3-The hydraulic mounts added to the cab frame to improve the operator’s ride comfort, have been proposed and researched. The operator’s ride comfort is evaluated via the root mean square of the displacement (zw1) and acceleration (aw1) of the operator’s seat. The study results indicate that with Cases 2 and 3 used, both the operator’s displacement and acceleration are strongly reduced in comparison with Case 1. With the optimal parameters of Case2 2 and 3 applied, the zw1 in Case 2 is higher than that of Case 3 by 24.4%. However, the aw1 in Case 2 is smaller than that of Case 3 by 60.8%. In addition, the structure of the rubber mounts in Case 2 is simpler than that of the hydraulic mounts in Case 3. Thus, the rubber mounts should be used to improve the operator’s ride comfort.
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