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Improved design and experiment of whole stalk operating system after sugar cane severing

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan

Citation:  2016 ASABE Annual International Meeting  162459969.(doi:10.13031/aim.20162459969)
Authors:   Luxin Xie, Jun Wang, Shaoming Cheng, Jinbing Hu
Keywords:   Abrasion rate, Impurity rate, Leaf-cleaning, Non-fracture rate, Optimization, Sugar cane harvester, Top-severing, Top-severing rate, Whole stalk.

Abstract. Leaves cleaning and top severing, as the key procedures during whole stalk sugar cane harvesting, are influenced by growth height and lodging status of cane stalks. A whole stalk operating system after sugar cane severing was designed and experimented to improve the adaptability of sugar cane harvester. In this system, the rotary rollers of leaf-shredding, leaf-cleaning and top-severing lacerated and peeled leaves by producing centrifugal and frictional force. According to the mechanical properties of cane stalks, the anti-deformation and impact resistance of the tops were significantly lower than other parts, and the anti-float mechanism was designed for severing tops. In this experiment, the speeds of leaf-shredding, leaf-cleaning and top-severing rollers were regarded as experimental factors. Four indices (impurity rate, top-severing rate, abrasion rate and non-fracture rate) were selected as assessment criteria. The working parameters were optimized using quadratic general rotary unitized design to find out the optimum parameter combination. The results indicated that the top-severing rate and abrasion rate were influenced by the speeds of three kinds of rollers significantly. However, the non-fracture rate was influenced by the speeds of top-severing rollers only, though they had no effect on the impurity rate. Optimum working parameters were nonlinearly optimized and determined as 512.9 r/min of leaf-shredding roller speed, 418.8 r/min of leaf-cleaning roller speed and 307.0 r/min of top-severing roller speed. Under the optimized conditions, the verification experiments showed that the experimental results were consistent with the theoretical results.

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