| A new gap adjusting device of mower conditioner was developed to solve the difficult problem adjusting flattening gap during operation process. The feeding amount, upper and lower flattened roll gap and tension of spring were selected as the major parameters for affecting the work performance and the high flattening ratio and less losses of crushed grass as evaluating indicators. The test research and results were carried out the analysis by using the orthogonal experimental method and membership degree weighted comprehensive evaluation method, has obtained the optimal combination for flattening grass: The feeding amount was 2.16 kg·s-1, the upper and lower flattened roll gap was 3 mm, and the tension of spring was 850 N. According to this optimal combination to carry out the test, the experimental results showed that: The average flattening rate was 94.7%, the average crushed grass loss rate was 2.18% which
could be met the operation demand of forage harvest. |