DEVELOPMENT OF AN ELECTRICAL HAND-HELD OLIVE HARVESTER

Document Type : Original Article

Author

Assoc. Prof., Ag. Eng. Dept., Fac. of Agric., Cairo University., Egypt

Abstract

The objective of this study was developed a hand held olive harvester suitable for small farms. The portable machine was designed, fabricated and evaluated for its performance and techno-economic feasibility. Some physical and mechanical properties (dimensions, mass, fruit detachment force / mass ratio) of olive fruits that are related to the mechanical harvesting were measured and considered in the machine design. The developed machine was evaluated at three levels of head speed (700, 1100 and 1500 rpm) and two types of head length (H1 has stick length of 6 cm and H2 has stick length of 17 cm). The evaluation criteria were: productivity (Pm), fruit removal percentage (FR) and fruit damage percentage (FD), consumed energy (CE) and harvesting cost (HC). From the obtained results, it is deduced an equation and contour chart for the harvesting machine to predict the suitability of the machine to removal the fruit with different olive variety. The most suitable working parameters of the machine at 1100 rpm and 1500 rpm with (H2) where the maximum value of evaluation parameter were Pm of 91.5  kg h-1, FR of  97.7 %, FD of 6.23 %, CE of 1.31 W h kg-1and HC of 0.26 L.E kg-1.

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References

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