a developed machine to harvest carrot crop - Misr Journal Of ...

- Root damageFig. (5) show that the relationship between belt inclination angle and rootdamage at different belt speeds. The figure illustrated that increasing beltinclination angle from 25 to 45 the root damage decrease from 1.0 to0.5 at belt speed 0.5 m/s, 1.5 to 0.8 at belt speed 1.0 m/s and 2.0 to 1.0 atbelt speed 1.5 m/s. Therefore the data cleared that the root damageincrease as average from 0.77 to 1.51 % by increasing belt speed from0.5 to 1.5 m/s.2.52Belt speed, m/s0.5 11.5Root damage, %1.510.5020 25 30 35 40 45 50Belt inclination angle, degreeFig. 5: The relationship between belt inclination angle and root damage.c- Lifting efficiencyFig. (6) clear that the effect of inclination angle on lifting efficiency atdifferent belt speed and height of foliage catch. From the figure theincreasing in belt inclination angle from 25 to 45 the lifting efficiencyincrease from 78 to 82, 76 to 80 and 73 to 76 % respectively at the beltspeed 0.5, 1.0 and 1.5 m/s and height of foliage catch of 5 cm. On theother side, at the foliage catch 10 cm the figure (6) illustrate that theincreasing in belt inclination angle from 25 to 45 the lifting efficiencyincrease from 69 to 73, 68 to 71 and 64 to 68 % respectively at belt speed0.5, 1.0 and 1.5 m/s and at height of foliage catch of 10 cm. Therefore, theabove figure show that the increasing in belt inclination angle from 25 to45 the lifting efficiency increase from 68 to 73, 64 to 68 and 61 to 65 %respectively at speeds of 0.5, 1.0 and 1.5 m/s and at height of foliagecatch of 15cm. Subsequently, the data cleared that the lifting efficiencyincreased by decrease the belt speed.Misr J. Ag. Eng., October 2008 1170