Abstract
As the key component of mechanical picking device of marigold flower, the structure, size, strength and motion of comb are closely related to the reliability and the rate of picking. In this paper, a mechanical comb for marigold based on bionic finger is designed, and the parameters of structure, row, spacing and outside diameter are designed respectively. Then, the three-dimensional model is established with ANSYS/LS-dyna platform, and the design strength of the comb-type picking mechanism is checked. The results show that the maximum deformation of the comb with 2.3802mm occurs near the top of the tooth during the picking process, which is small and meets the design strength requirements. Finally, the picking process of the comb-type picking mechanism is simulated and the result shows that when the operating speed v is set to 3.0km/h and w is set to 30r/min, the picking effect is good. The above research provides a theoretical reference for the mechanical picking of marigold.
Highlights
Marigold is an important flower widely used in industry and medicine for its economic value
A mechanical comb for marigold based on bionic finger is designed, and the mechanical properties of the mechanism are analyzed and the picking process is simulated based on ANSYS/LS-dyna platform
It can be concluded that the maximum deformation of the comb appears near the top of the teeth in the picking process and the value is small, which meets the strength requirements of the mechanism
Summary
Marigold is an important flower widely used in industry and medicine for its economic value. The pigments in marigold have obvious medicinal benefits on anti-cancer, anti-aging, anti-human immunodeficiency virus, so the attention and demand for marigold flower is increasing, attention is increasing with the result that marigold is planted in large quantities[1,2].At present, marigold mainly relies on manual picking, which costs huge labor with low efficiency, high cost is, time-consuming and pollen allergy, especially susceptible to weather factors. Apart from that, marigold should be treated with anti-oxidation and preservation immediately after picking, which could cause huge economic loss with incorrect operation[3,4]. The research on mechanical picking of marigold mainly focuses on small-scale hand-held or backpack picking mechanism with low level of mechanization, which is not applicable to the large-scale operation. A mechanical comb for marigold based on bionic finger is designed, and the mechanical properties of the mechanism are analyzed and the picking process is simulated based on ANSYS/LS-dyna platform
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