Determination of pin-roller parameters and evaluation of the uniformity of granular fertilizer application metering devices in precision farming

Sugirbay, Adilet; Zhao, Jing; Nukeshev, Sayakhat; Chen, Jun

doi:10.1016/j.compag.2020.105835

Cited by 32 publications

(30 citation statements)

References 31 publications

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“…In the case that the opening size of the duckbill meets the requirements, it should also be considered that the time t for the seeds to fall from the duckbill to the seeding hole is less than the effective time T for the duckbill to open, that is, t < T. The effective time of duckbill opening refers to the time when the duckbill opening size K ≥ 7.74 mm under the premise that the depth of the duckbill's penetration into the soil is in the range of 20-40 mm. When the rotational speed of the dibber wheel is 40 r/min, it can be obtained that t = 0.041 s through Equations ( 7)- (10). According to Equation ( 11), T = 0.10 s can be obtained, which satisfies the condition of smooth seeding.…”

Section: Pressure Plate Designmentioning

confidence: 98%

“…The design needs to pay attention to the influence of hole spacing, hole seeding depth (duckbill upper jaw depth into soil) and duckbill opening size on the smooth discharge of seeds. The spring has an When the rotational speed of the dibber wheel is 40 r/min, it can be obtained that t = 0.041 s through Equations ( 7)- (10). According to Equation ( 11), T = 0.10 s can be obtained, which satisfies the condition of smooth seeding.…”

Section: The Influence Of Spring On Cavitation Hole Formingmentioning

confidence: 99%

“…2πn v=wR=R 60 (10) 1 60 T=φ 360n (11) In Formulas ( 7)- (11), ag is seed acceleration (m/s 2 ); F is the centrifugal force of the seed (N); n is the rotational speed of the dibber wheel (r/min); and φ1 is the rotation angle required by seeding. According to Formulas ( 7)- (11), the value of φ1 is 24°.…”

Section: Pressure Plate Designmentioning

confidence: 99%

“…Therefore, related scholars and manufacturing companies have conducted a lot of research on the dibber wheel. After more than 70 years of development, the seed metering devicerelated technology tends to mature [10]. At present, seeding apparatus mainly includes mechanical seeding apparatus and pneumatic seeding apparatus, both of which have high working efficiency and a good precision seeding effect, and are widely used in the seeding process of rice and corn, etc.…”

Section: Introductionmentioning

confidence: 99%

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Design and Experiment of the Buckwheat Hill-Drop Planter Hole Forming Device

et al. 2021

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The hole forming device is an important element of the buckwheat hill-drop planter, and its design level directly affects the seeding quality of the hill-drop planter. A hole forming device with a duckbill structure is widely used in hill-drop planters for wheat, cotton, peanuts, etc. According to the requirements of buckwheat seeding operations, this study designs the components of the duckbill hole forming device. It is determined that the duckbill upper jaw length is 65 mm, the duckbills number is 10, the pressure plate on the spring side length is 90 mm, the duckbill opening size is 8.79 mm, and the duckbill effective opening time is 0.1 s. Through co-simulation analysis of discrete element software EDEM (DEM-Solutions, Edinburgh, United Kingdom) and multi-body dynamics software RecurDyn (FunctionBay, Inc., Seongnam-si, South Korea), it is measured that when the pressure plate on the spring side is directly below the rotation axis of the dibber wheel, the spring compression is 33.3 mm, the pressure on the pressure plate is 95–102.6 N, and the contact time of a single duckbill with the soil is 0.2 s at a speed of 40 r/min. Based on the results of the design and simulation analysis, the large end diameter, small end diameter, original length and wire diameter of the duckbill spring are 36 mm, 26 mm, 60 mm, and 1.8 mm, respectively. An experimental bench for the seeding wheel of a buckwheat hill-drop planter was built, and three wire diameter duckbill springs of 1.6 mm, 1.8 mm and 2.0 mm were tested to verify the simulation and calculation results. The experimental results show that the optimal wire diameter of the duckbill spring is 1.8 mm. Finally, a single factor experiment of the dibber wheel rotation speed was carried out. The experimental results show that when the rotation speed of the dibber wheel is 40–65 r/min, the seeding qualification rate, seeding void hole rate and seeding damage rate of the buckwheat hill-drop planter are ≥85.3%, 0, and <0.3%, respectively. This study provides a basis and reference for the hole forming device design of a buckwheat hill-drop planter.

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Section: Pressure Plate Designmentioning

confidence: 98%

Section: The Influence Of Spring On Cavitation Hole Formingmentioning

confidence: 99%

Section: Pressure Plate Designmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Design and Experiment of the Buckwheat Hill-Drop Planter Hole Forming Device

et al. 2021

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“…Compared with the disk-cell type and pneumatic type seed-metering devices [ 5 , 6 ], the flute-roller type seed-metering device can discharge the largest amount of the seeds in a rotation. Therefore, in order to meet the requirement of seeding efficiency of the grain seeds, the flute roller type seed-metering device was chosen to discharge the grain seeds [ 7 ].…”

Section: Introductionmentioning

confidence: 99%

An Adaptive Roller Speed Control Method Based on Monitoring Value of Real-Time Seed Flow Rate for Flute-Roller Type Seed-Metering Device

Liu

Zhao

et al. 2020

Sensors

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In order to obtain desirable crop yields, grain seeds need to be sown at the optimal seed amount per hectare with uniform distribution in the field. In previous grain sowing processes, the seeding rates are controlled by the rotational speed of the flute roller which significantly effects the uniform distribution of the seeds due to disturbances, such as the reduction of the seeds’ mass in the hopper and the change of working length of the flute roller. In order to overcome the above problem, we developed an adaptive roller speed control system based on the seed flow rate sensor. The developed system can monitor and feedback actual seeding rates. In addition, based on the monitoring value of the real-time seeding rates, an adaptive roller speed control method (ARSCM), which contains an algorithm for calculating the seeding rate with a compensation, was proposed. Besides, the seeding performance of the ARSCM and that of the conventional roller speed control method (CRSCM) were compared. The results of constant-velocity experiments demonstrated that the accuracy (SA) and the coefficient of variation (SCV) of the seeding rates controlled by the ARSCM were 94.12% and 6.77%, respectively. As for the CRSCM, the SA and SCV were 89.00% and 8.95%, respectively. Under variable-velocity conditions, the SA and SCV of the proposed system were 91.58% and 11.08%, respectively, while those of the CRSCM were 88.48% and 13.08%, respectively. Based on the above results, this study concluded that the ARSCM is able to replace the CRSCM in practical sowing processes for the optimal and uniform seed distribution in the field.

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