Design and Experiment of Symmetrical Spiral Row-Sorting of the Straw Device Based on Kinematics Analysis

Li, Yunxiang; Lu, Caiyun; Li, Hongwen; Wang, Zhinan; Gao, Zhen; Wei, Xuyang; He, Duanwei

doi:10.3390/agriculture12070896

Cited by 4 publications

(4 citation statements)

References 21 publications

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“…Based on the previous research, the pressure angle and fertilization gap are the main structural parameters affecting the flow uniformity of the double-gear fertilizer discharger [14,15]. The theoretical fertilizer discharge volume can reach the agronomic requirement of 750 kg/hm 2 of the ultimate fertilizer application when the operating speed of the discharge wheel is 60 rpm.…”

Section: Analysis Of Fertilizer Discharge Volume In Fertilizer Capaci...mentioning

confidence: 99%

Simulation Analysis and Test of Gap Squeeze Gear Type Fertilizer Discharger for Granular Fertilizer Containing Caking

Dun

Mao

et al. 2023

Preprint

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Precision fertilizer application technology is necessary to improve fertilizer utilization efficiency in agricultural production. To achieve precision fertilizer application and solve problems in production practice that contain the structure problem of the traditional mechanical fertilization systems, and the fertilizer discharger is blocked and can not achieve uniform fertilization because the fertilizer contains caking fertilizer in response to the characteristics of conventional fertilizers containing caking fertilizers, innovative design and system experimental simulation studies were carried out. A gap squeeze gear-type fertilizer dis-charger was designed, and fertilizer caking crushing was achieved by configuring the gear gap squeezing method. Combined with engineering practice, two mixed fertilizers (granular fertilizer with caking fertilizer) were constructed and blended by using BPM (Hertz Mindlin with bonding) discrete element, the fertilizer discharger was used as the object of study to simulate and experimentally investigate the process of crushing and discharging of mixed fertilizer and the process of uniform discharging of mixed fertilizer. The simulation test model of the separation device with vibration screen of the caking fertilizer and granular fertilizer after fertilizing was established to study the crushing rate of the caking fertilizer, and the simulation model with collection plate of the uniformity of the mixed fertilizer discharge was based on to explore the uniformity of the mixed fertilizer. The L9 (34) orthogonal test was carried out under the conditions with the number of teeth, pressure angle, and fertilization gap as test factors and the fertilizer crushing rate and fertilizer uniformity coefficient as test indicators. The test results showed that the number of teeth and pressure angle had significant effects (0.01 < P < 0.05) on the crushing fertilizer rate and fertilizer uniformity, and the fertilization gap had no significant impact (P༞0.05) on the crushing fertilizer rate and fertilizer uniformity. In the optimal combination of parameters, the number of teeth 6, pres-sure angle 15 °, fertilization gap 6mm operation, the coefficient of uniformity of crushing fertilizer rate and fertilizer uniformity were 74.89% and 17.21%, respectively. The bench test results compared with the outer groove wheeled fertilizer drainer showed that the optimized gap squeeze gear type fertilizer discharger has higher fertilizer crushing quality at different speeds, and the fertilizer crushing rate and uniformity were79.69% and 18.56%, respectively, within the error range. The simulation results are in general agreement. This study provides evidence for fertilizer discharger structure design and enhances the effect of fertilizer discharger crushing.

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Section: Analysis Of Fertilizer Discharge Volume In Fertilizer Capaci...mentioning

confidence: 99%

Simulation Analysis and Test of Gap Squeeze Gear Type Fertilizer Discharger for Granular Fertilizer Containing Caking

Dun

Mao

et al. 2023

Preprint

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“…Direct seeding will lead to difficulties in the operation of machines and tools, which will seriously affect the seeding effect [5,6], and row-sorting of the straw before sowing is an effective way to improve the seeding quality [7,8]. However, problems such as high soil loss in the seeding belt, incomplete cleaning of short straw, straw blockage of row-sorting parts, and so on are prone to occur during the straw row-sorting operation [9]. Therefore, it is necessary to identify how to achieve the high-efficiency and high-quality row-sorting of corn straw under the premise of minimizing the soil loss in the seeding belt.…”

Section: Introductionmentioning

confidence: 99%

Design and Experiment of Active Spiral Pushing Straw Row-Sorting Device

Guo,

Lu,

et al. 2024

Agriculture

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Aiming to solve the problems of excessive straw residue and large soil loss in the seeding belt of the straw row-sorting operation when the full volume of straw is crushed and returned to the field in the northeastern region of China, an active spiral pushing straw row-sorting device (ASPSRD) was designed in this paper. The straw on the surface of the land is collected and stirred by the high-speed rotating spiral-notched blades in the device and pushed to the non-seeding area for the purpose of cleaning the seeding belt. The parameters of key components were determined through theoretical analysis. The orthogonal combination test method of four factors and three levels was adopted. The EDEM discrete element simulation experiment was carried out by selecting the straw mulching quantity (SMQ), the rotating speed of the active rotating shaft (RSARS), the forward speed of the tractor (FST), and the notch width of the spiral notch blade (NWSNB) as the test factors, and the straw-cleaning rate (SCR) and soil loss rate (SLR) as the test indexes. Through range analysis, the parameters were optimized, and the optimal operation parameters of the straw row-sorting device were determined as follows: SMQ was 1.8 kg/m2, RSARS was 120 rpm, FST was 4 m/s, and NWSNB was 9 mm. The operational performance of the device was verified by field experiments. The results of the test showed that after the device was operated with the optimal combination of parameters, the SCR of the 20 cm wide seeding belt was 95.32%, and the SLR was 7.12%, which met the agronomic and technical requirements of corn no-tillage sowing operation in Northeast China. This study can provide a reference for the design of a straw row-sorting device of a no-tillage machine.

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“…These anti-blocking mechanisms find applications in rapeseed direct planting as well as corn no-tillage planting. Theoretical [14,15], experimental [16,17], and numerical [18,19] methods are employed to assess the performance of anti-blocking mechanisms in terms of soil disturbance and straw cleaning rate. For instance, Li et al [14] analyzed the performance of symmetrical spiral row-sorting of the straw device with a theoretical method, Jiang et al [16] tested the performance of a seedbed preparation machine before transplanting of rapeseed with a combined transplanter in the field, and Zhu et al [18] optimized the structural parameters of the bionic shifting and diffluence straw anti-blocking mechanism via EDEM 2022 software.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Analysis of Straw Motion under the Action of an Anti-Blocking Mechanism for a No-Till Maize Planter

Zhang,

Fang,

et al. 2024

Agriculture

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To address the low clearance rate issue of the anti-blocking mechanism for maize no-till planters in the Huang-Huai-Hai Plain of China, experiments and simulations were conducted to analyze the individual and collective movements of straw under the action of the round roller-claw anti-blocking mechanism. A tracer-based measurement method for straw displacement was applied firstly. Experimental results showed that the straw forward displacement could be characterized by the average horizontal displacements of longitudinal and lateral tracers, while the straw side displacement could be characterized by the lateral displacement of the longitudinal tracer. The straw forward displacement was 58.95% greater than the side displacement. Forward, side, and total displacements of straw increased as the mechanism’s forward speed increased from 3 km/h to 7 km/h, with corresponding rates of increase at 233.98%, 43.20%, and 162.47%, respectively. Furthermore, a model of straw–soil–mechanism interaction was constructed in EDEM 2022 software. The relative error between experimental and simulated straw clearance rates was 11.20%, confirming the applicability of the simulation model for studying straw–soil–mechanism interaction. Based on the simulation model, three straw tracers of different lengths were selected to study the motion behavior of straw. It was inferred that despite differences in straw length, the movement behaviors of the three straw tracers under the influence of the anti-blocking mechanism were similar. Additionally, longer straws exhibited greater displacements in all directions. This paper serves as a reference for studying straw motion behavior influenced by anti-blocking mechanisms.

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Design and Experiment of Symmetrical Spiral Row-Sorting of the Straw Device Based on Kinematics Analysis

Cited by 4 publications

References 21 publications

Simulation Analysis and Test of Gap Squeeze Gear Type Fertilizer Discharger for Granular Fertilizer Containing Caking

Simulation Analysis and Test of Gap Squeeze Gear Type Fertilizer Discharger for Granular Fertilizer Containing Caking

Design and Experiment of Active Spiral Pushing Straw Row-Sorting Device

Experimental and Numerical Analysis of Straw Motion under the Action of an Anti-Blocking Mechanism for a No-Till Maize Planter

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