Different tests were performed to measure parameters required for calculating power consumption and designing of cumin mowers. Hence, some engineering properties of cumin stems were measured. They included shearing and bending tests on cumin stem and specifying the coefficient of friction between mower knives and cumin stem. After that, relationships between static and dynamic friction forces being exerted on mower runners (soles) by soil with normal load on them and important factor of soil moisture content were found out. Harvest moisture content, maximum and average of cumin stem diameter, maximum bio-yield point of force and maximum ultimate point of force in the cutting, average needed energy to cut a stem, maximum elasticity module, maximum bending rupture force, average needed energy for bending a stem, friction coefficient between the stem and knife edge, relation between bio-yield force, failure force, elasticity and diameter in the cutting, relation between rupture forces and diameter in the bending and relations between soil friction draft forces and mower weight are some of the main measured and discussed parameters in this study that are important for calculating the power consumption and designing an optimized mower.
کلید واژگان :Design parameters; Cumin mower design; Cumin stem properties; Soil to runner friction; Power consumption.
ارزش ریالی : 600000 ریال
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