Abstract
In this study, an automatic accumulating equipment for a roller-type onion pot-seeding machine was developed. The developed accumulating equipment accumulates the pot trays that complete the seeding in multiple stages using a conveyor belt and elevator plate, and can be easily attached to the existing roller-type onion pot-seeding machines as it is fabricated as a module. The components were selected to meet the conditions required for the accumulating equipment. A factorial experiment was performed by setting the transport speed of the conveyor belt and the one-time operating time of the actuator as test factors. Through the experiment, appropriate operating conditions to minimize the seed bounce rate in the accumulating process were derived. If the developed accumulating equipment is applied to a roller-type onion pot-seeding machine, the labor force and labor load required for seeding will be reduced.
Highlights
A need for ergonomic design is emerging to prevent occupational musculoskeletal diseases that occur owing to the uncomfortable working postures and repeated motions of workers [1,2].In particular, agricultural works are often performed in harsh conditions such as high temperatures and dusty environment
The elevator plate returns to the original position as it descends, but the pot tray is accumulated onto the stopper bracket
In this study, accumulating equipment for a roller-type onion pot-seeding machine was developed, and the appropriate operating conditions were derived through factorial experiments
Summary
A need for ergonomic design is emerging to prevent occupational musculoskeletal diseases that occur owing to the uncomfortable working postures and repeated motions of workers [1,2]. The round bar type and angle beam type have high power transmission efficiency and relatively low production cost because they use simple mechanical components such as chains and gears These types, cannot be used when the flexibility of the pot trays is high because the contact area between the lift element and pot tray is narrow. As the pot trays used for onion seeding can be bent owing to their high flexibility, the flat plate-type accumulating equipment is required to reduce the bending of the pot trays, thereby minimizing the seed bounce in the accumulating process [9]. Flat plate-type accumulating equipment for a roller-type onion pot-seeding machine was developed, and appropriate operating conditions to minimize the seed bounce in the accumulating process were derived
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