Authors

Abstract

The shelling stress of the castor capsule is difficult to obtain by experiments, which is vital for the design of the key components for the shelling machine. The stress analysis of the shelling process of the castor capsule is carried out. In this study, the typical variety Tongbi 11 is taken as the research object, and the model of shell extraction is established. The stress and rate of shelling removal of the inner roller are analysed. The effects of size optimization on the shelling results were analyzed, and the testbed was designed for the experiment. In the condition of the highest rate of shelling, the size of the outer drum is maintained, and the inner drum angle is 4.5°. The length of the drum is 605mm. At this time, the shelling rate is 96.42 %, which is 0.39 % different from the fitting value. This study provides theoretical support for the design and parameter optimization of the castor shelling machine and its key components.

Abstract in Chinese

蓖麻蒴果的脱壳应力难以通过实验获得，这对脱壳机关键部件的设计至关重要。本研究对蓖麻蒴果脱壳过程进行了应力分析并对关键部件进行优化。本研究以典型品种通蓖11号为研究对象，建立了脱壳模型。分析脱壳的应力和脱壳率。得到蓖麻蒴果各阶段的最大压力、内外辊力和内力。分析尺寸优化结果对脱壳效果的影响，并设计试验台进行试验。结果表明，脱壳率最高的情况下，保持外筒尺寸不变，内筒角度为4.5°。滚筒的长度为605mm。此时脱壳率为96.42%，与拟合值相差0.39%。本研究为蓖麻脱壳关键部件的设计和参数优化提供了理论支持。