Making saffron harvesting machine in Iran
The saffron harvesting mechanism is such that a carriage with a rubber cover, which is rotational with car wheels, and a roller that runs counterclockwise with the wheel of the car, Composed.
The design of the carousel is such that the flowers of saffron can pass through the rods; the smooth roller, which is located behind the carousel, is made as a complete cylinder.
Both cylinders are in the direction perpendicular to the direction of movement of the device; when the flower of the saffron is placed between the carved rods, with its time, it is directed to the rear (between the carriage and the roller), and since the carousel has a covering Rubber and roller bearings, it prevents the flower from flowing between itself and is arranged with the movement of the flower of saffron.
Moving the carriage and roller is performed by a chain gear transmissions system that moves itself from the car carrier; this makes the flower picking speed commensurate with the speed of the car.
Mustafa Khojastanjand, the developer of the project, said on the issues that had been considered in relation to the construction of this device from the outset, said: To minimize as much as possible to avoid rising costs, choosing fittings based on the ease of separating all components if needed. Or changing the design, making a prototype based on the principle of use by manpower and wheel and the geometry of the device and making the machine for use in a saffron field with a width of 70 cm planting and flowering saffron plant at the same height.
He described the chassis as one of the main components of the car and stated: “To build and mount all parts of the car, a tight and heavy chassis has been selected; the chassis is tight due to the small distance between the parts mounted on it, This does not take into account the desired distance between the parts and causes the device to not function properly.
The technologist added: The chassis’ weight is also due to the fact that the car is designed as a wheel and moves with the carriage rotation to be heavy enough to keep the wheels off from the ground while working on the field, Prevent it.
“The first issue during planting is the choice of a flat and flat land so that the product to be planted is identical in height at the same time; along with the depth of planting for all the planted scions, the same is true because Insufficient accuracy at planting depth causes the flower of saffron in the field to appear at different heights that makes it difficult to harvest the machine.
The technology activist stated that the next issue that should be considered during planting is the issue of planting width, said that in the prototype, the useful working width of the machine is 76 centimeters; the total width of the device, including the wheels, is 120 centimeters.
He added: So according to the width of the machine, the width of the plant should be 70 cm; in larger specimens it should be decided on the basis of the useful width of the machine as well as the space required for transportation.
The developer noted: at the stage of the product, it was necessary to select the irrigation scheduler so that flowering could occur before saffron planting, which is also possible by setting the irrigation time.
He said harvesting can be done by adjusting the height of the front wheel, as well as the distance between the nose and the carriage of a carcass with a smooth roller in place of contact using the facilities considered.
According to him, by moving the car on a row planted with the speed of walking a normal person, the carcass nose and the roller are rotated in an opposite direction; by moving to the front of the car and rotating the nose, the saffron plant The empty space is located between the nose bars and is moved forward by moving the car and turning the nose to the rear, and when the stem reaches the end of the nose circumference, on the other hand it collides with a smooth roller that runs opposite the direction of the nose, and Because the collision of the stem with the nose and roller contact is lower than the saffron flower, so the saffron flower in the top of the contact area Because of the direction of rotation and the impossibility of crossing the short distance between the nose and the roller is off.
Khojostanjand also said: because the nose speed is higher than the perimeter of the roller, and because of the high nose than the roller, the flower is thrown backward, which is placed on the rear and under the roller by placing a flower cloth They are collected and transferred to the premises for separation work.
source: dolatebahar /com
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