A comb-brushing-type green soybean pod harvesting equipment: Design and experiment
Fig 5
Schematic diagram of measuring points.
Note: hf is the height of soybean stalk, m; α1 is the angle between ground and plant before harvest, rad; h1 is the lowest distance from the ground to green soybean, cm; α2 is the angle between plants and ground in the feeding area, rad; α3~α4 is the angle between plants and ground in harvest area, rad; α5 is the angle between plants and ground in extraction state, rad; h is the distance of the drum to ground, cm; v is the travel speed of the device, m/s; ω is the rotational speed of drum, rpm/min; r is the inner diameter of the drum (mounting comb teeth), mm; Hg is the distance of drum axis from ground, cm; θ is the rotation angle of the drum, rad; Rm is the tangential point between the plant located at position C and the inner diameter of the roller; Rn is the tangential point between plant located at position D and the inner circle of drum; vt is the advance distance of C to E, m.