Conceptual Modeling Automated Seedling Transfer from Growing Trays to Shipping Modules

Brewer, H. L.

doi:10.13031/2013.28174

Cited by 16 publications

(6 citation statements)

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“…The functions of seedling pick-up devices are to auto-extract seedlings from growing trays, transfer them, and release them into the planting unit where they are to be transplanted into the ground (Brewer, 1994). Although the working speed was about the speed of hand placement, it was intended at the beginning of the study to concentrate many efforts on making the extracting function of the seedling pick-up device more accurate.…”

Section: Design Planmentioning

confidence: 99%

“…The articles authored by Brewer (1994) were reviewed to develop a conceptual framework of a seedling pick-up device that will satisfy such transplanting requirements. The FUTURA transplanter is such an automatic machine that has been studied for transplantation of vegetables in modules or in trays (FMC, 2014).…”

Section: Introductionmentioning

confidence: 99%

“…As the concepts for a machine are modeled on a computer in the agricultural engineering, sufficient information is presented to allow the judgment of design feasibility (Brewer, 1994). Therefore, the dynamics of the seedling pick-up system were simulated on Adams (Mechanical Dynamics Inc.…”

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confidence: 99%

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Development of a doorframe-typed swinging seedling pick-up device for automatic field transplantation

Han

Mao

et al. 2015

Span. j. agric. res.

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<p>A doorframe-typed swing seedling pick-up device for automatic field transplanters was developed and evaluated in a laboratory. The device, consisting of a path manipulator and two grippers, can move the pins slowly to extract seedlings from the tray cells and return quickly to the pick-up point for the next extraction. The path manipulator was constructed with the creative design of type-Ⅱ mechanism combination in series. It consists of an oscillating guide linkage mechanism and a grooved globoidal cam mechanism. The gripper is a pincette-type mechanism using the pick-up pins to penetrate into the root mass for seedling extraction. The dynamic analysis of the designed seedling pick-up device was simulated with ADAMS software. Being the first prototype, various performance tests under local production conditions were conducted to find out the optimal machine operation parameters and transplant production conditions. As the gripper with multiple fine pins was moved by the swing pick-up device, it can effectively complete the transplanting work cycle of extracting, transferring, and discharging a seedling. The laboratory evaluation showed that the pick-up device equipped with two grippers can extract 80 seedlings/min with a 90% success and a 3% failure in discharging seedlings, using 42-day-old tomato plantlets. The quality of extracting seedlings was satisfactory.</p>

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Section: Design Planmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Development of a doorframe-typed swinging seedling pick-up device for automatic field transplantation

Han

Mao

et al. 2015

Span. j. agric. res.

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“…Nursery equipment often combines both lifting and deplugging when extracting seedlings (Tuinbouw Technisch Atelier 2013). Deplugging using blasts of air has also been proposed for nursery activities (Brewer 1994).…”

Section: Introductionmentioning

confidence: 99%

Reloading mechanized tree planting devices faster using a seedling tray carousel

Ersson¹,

Bergsten²,

Lindroos³

2014

Silva Fenn.

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Reloading mechanized tree planting devices faster using a seedling tray carousel Ersson B.T., Bergsten U., Lindroos O. (2014). Reloading mechanized tree planting devices faster using a seedling tray carousel. Silva Fennica vol. 48 no. 2 article id 1064. 14 p. Highlights• Seedling reloading onto the Bracke Planter crane-mounted planting device was twice as fast with the MagMat tray-wise-loaded carousel as today's seedling-wise-loaded carousel.• Tray-wise reloading combined with deplugging seedlings from suitable cultivation trays has the potential to be an efficient and robust way to feed seedlings on any type of tree planting machine. AbstractOn Nordic clearcuts, today's tree planting machines produce high-quality but costly regenerations. Much of this high cost is attributable to the planting machines' low productivity. One promising way of raising productivity is to lessen the time spent manually reloading seedlings onto the carousels of crane-mounted planting devices. Using MagMat, a carousel test-rig designed by engineering students, we studied how much faster tray-wise seedling reloading is on the Bracke Planter compared to reloading with today's seedling-wise-loaded carousel. The MagMat test-rig held eight Hiko cultivation trays from which seedlings were deplugged individually and dropped into the planting tube. The time study confirmed that seedling reloading was on average twice as fast with MagMat compared to today's seedling carousel, thereby increasing assumed planting machine productivity by 8-9% depending on the planting device used. MagMat's cost-efficiency was analysed to be particularly reliant on its added investment cost, mechanical availability and how quickly trays can be switched automatically. Nevertheless, MagMat's field performance illustrated the overall potential of tray-wise loading compared to piecewise seedling loading for increasing the productivity of crane-mounted planting devices. Also, deplugging proved to be a reliable method of extracting seedlings from the rigid, copper-painted Hiko cultivation trays even when performed at the excavator's boom-tip during mounding work. We conclude that, rather than piecewise seedling loading, tray-wise loading combined with deplugging seedlings from suitable cultivation trays is a reliable and much more time-efficient method to feed seedlings on probably any type of tree planting machine.

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“…Europe, America and Japan are international leader in the field of dry land transplantation, but all the full-automatic transplanting machines use 3 devices to achieve the 3 actions of taking, transportation and planting separately. It causes complex structure, high cost and low efficiency, and mainly applies to economic crop [3][4][5][6][7]. China in the copying stage, transplanting machines are most semi-automatic, which need artificial feeding seedlings and cause high labor intensive and low efficiency [8].…”

Section: Introductionmentioning

confidence: 99%

Kinematic Optimization of Corn Full-Automatic Transplanting Mechanism with Non-Circular Gears Based on Matlab

Zuo

Li²

2014

AMM

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In order to guarantee the high and stable yields, improve the economic benefits and promote the transplanting technology of corn. The pitch curve of non-circular gear is fitted based on quasi uniform B-spline theory, corn full-automatic transplanting mechanism has been invented, and its kinematics mathematical model has been built through analysis of transplanting mechanism. The computer aided analytical and optimized software has been developed on software Matlab’s platform. Through tuning the data points by man-machine interaction, pitch curve of non-circular gear and structural parameters are optimized, until track and attitude of mechanism meet the demands for corn transplanting process. The 3 actions of taking, transportation and planting corn transplantation can be achieved orderly by a mechanism.

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Conceptual Modeling Automated Seedling Transfer from Growing Trays to Shipping Modules

Cited by 16 publications

References 0 publications

Development of a doorframe-typed swinging seedling pick-up device for automatic field transplantation

Development of a doorframe-typed swinging seedling pick-up device for automatic field transplantation

Reloading mechanized tree planting devices faster using a seedling tray carousel

Kinematic Optimization of Corn Full-Automatic Transplanting Mechanism with Non-Circular Gears Based on Matlab

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