Development of a generator-powered self-propelled automatic tray loading/unloading machine for use in rice nurseries

Chiu, Yi-Chich; Wu, Gang-Jhy; Chen, Chi-Hui

doi:10.1016/j.eaef.2019.02.002

Cited by 3 publications

(3 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Many scholars studied the fully automated production of facility nursery machinery. Chiu et al [14,15] developed a generator-powered, self-propelled automatic tray loading/unloading machine for rice seedling nurseries by using a gantry as the transport system to automate seedling tray placement and harvesting. This equipment enables the placement of seedling trays from conveyor belts to seedbeds and vice-versa to the automatic seedling tray stacking.…”

Section: State Of the Artmentioning

confidence: 99%

See 1 more Smart Citation

Design and Optimized Simulation of Seedling Tray Stacking Manipulator for Seedling Machine Producing Square Substrate Blocks

Li¹,

Liu²,

Li³

et al. 2019

JESTR

View full text Add to dashboard Cite

Industrialized seedling has the advantages of high efficiency, low cost, easy promotion of fine varieties, and standardized seedling management, so it is the trend of modern agriculture development. Seedlings using square substrate blocks is one of the main ways, but the high labor intensity and high labor costs have hindered its rapid development. In order to realize the automatic unloading of the seedling trays, this study designed and optimized a kind of seedling tray stacking manipulator for nursery machine that produces square substrate blocks. A design method for the robustness of grabbing the seedling trays and the anti-interference between manipulator and seedling tray was also proposed. Firstly, the principle of stacking manipulator was analyzed, and the structure was optimized. Kinematics analysis was conducted, and a kinematic model was established. The relationship between the stroke of an electric push rod and the opening and closing angle of a claw was obtained through model analysis. The movement stroke of the electric push rod was optimized to meet the design requirements of the maximum and minimum limit positions of the manipulator. Finally, the rationality of the parameter design was verified by static and kinematics simulation. The results demonstrate that the stroke range of the electric push rod is 27.6-105.6 mm, and the opening and closing angle range of the claw is 11.7-66.7°, which meets the requirements. In addition, the force of each component during the seedling moving is within a reasonable range. This study provides an important reference for the development and performance improvement of automatic square substrate seedling machines that support automatic loading, unloading, and palletizing.

show abstract

Section: State Of the Artmentioning

confidence: 99%

“…Taking Equations (13)- (15) into (12) can obtain Equation (16). (16) Equation 17is given by taking Equations (11) into (16).…”

Section: Determination Of the Minimum Limit Positionmentioning

confidence: 99%

Design and Optimized Simulation of Seedling Tray Stacking Manipulator for Seedling Machine Producing Square Substrate Blocks

Li¹,

Liu²,

Li³

et al. 2019

JESTR

View full text Add to dashboard Cite

show abstract

“…However, these conveyors are not always easily available, especially for field operations. Moreover, an improved cart with a conveyor that can be used to load and unload seeds is evidently required ( Chiu et al., 2019 ; Hafez et al., 2021 ). The current study aims to improve wheat transportation through the design, fabrication, and testing of an innovative cart for transporting wheat from fields to storage sites.…”

Section: Introductionmentioning

confidence: 99%

Development and evaluation of an innovative grain cart with a pneumatic conveyor

Elkholy

Kamel

2021

Heliyon

View full text Add to dashboard Cite

In line with the requirements of the Egyptian government to find a solution for wheat transportation during the peak harvesting season, an innovative design for a grain cart with a capacity of 8 tons supplemented with a grain hopper, a lifting double-action pneumatic conveyor, and a built-in digital scale was tested and evaluated to facilitate the transport of wheat crops from farmers' fields to storage sites. The cart was manufactured in the workshop of a local industrial company. It was tested under varying operational conditions in different wheat production areas in terms of working performance, efficiency of the grain loading and unloading mechanism, precision of the grain weighing mechanism, and cost/ton. The cart will enable wheat farmers and traders to transport and deliver their crops easily to storage sites with minimal losses and maximum working efficiency. It will also increase farmers’ profit because transportation cost by using this grain cart is less than that of the current conventional method. Moreover, the developed cart can secure wheat supply in government storage sites without any interruption during the peak wheat harvesting season.

show abstract

Design and Experiment of the Automatic Laying System for Rice Seedling Tray

et al. 2021

View full text Add to dashboard Cite

In the process of raising rice seedlings, it is necessary to manually place the seedling trays one by one in the seedling field, which is labor intensive and low in efficiency. In order to solve this problem, according to the actual conditions of the rice seedling field, this paper designs and develops an automatic rice tray laying system, which consists of a gantry truss moving unit, a tray laying trolley unit, a tray laying mechanism unit and a sensor control unit. Through the movement and timing coordination of the cams in the laying mechanism unit, four actions of holding, clamping, laying and restoring are designed to realize the orderly and automatic laying of the stacked seedling trays one by one. In order to meet the agronomic requirements of the horizontal and vertical spacing of seeding trays, especially the efficiency of rice tray laying, the control strategies of the key parts of the system were simulated, selected and optimized. For the longitudinal movement of the gantry truss, the cross-coupling control strategy is adopted to realize the detection and compensation correction of the synchronous position error of the two driving motors. As for the drive motor of the laying trolley and the laying mechanism, the optimized master-slave follow-up control method is adopted to improve the efficiency and accuracy. The results of simulation and field experiment show that when the tray trolley moves on the gantry truss at the speed of 7.5 cm/s, the gantry truss moves at the speed of 35 cm/s in the longitudinal direction, and when the height of the tray laying mechanism is 100 mm from the ground and the motor speed is 375 rpm, the horizontal spacing of the tray can be maintained at 25 ± 5 mm and the vertical spacing at 15 ± 5 mm. The efficiency of tray laying can be increased by 35.7%, up to 380 trays/h, meeting the technical requirements of mechanized field tray laying.

show abstract

Development of a generator-powered self-propelled automatic tray loading/unloading machine for use in rice nurseries

Cited by 3 publications

References 4 publications

Design and Optimized Simulation of Seedling Tray Stacking Manipulator for Seedling Machine Producing Square Substrate Blocks

Design and Optimized Simulation of Seedling Tray Stacking Manipulator for Seedling Machine Producing Square Substrate Blocks

Development and evaluation of an innovative grain cart with a pneumatic conveyor

Design and Experiment of the Automatic Laying System for Rice Seedling Tray

Contact Info

Product

Resources

About