Parameter Optimization and Testing of a Self-Propelled Combine Cabbage Harvester

Zhang, Jianfei; Cao, Guangqiao; Ye, Jin; Tong, Wenyu; Zhao, Ying; Song, Zhiyu

doi:10.3390/agriculture12101610

Cited by 12 publications

(5 citation statements)

References 10 publications

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“…7c, it can be seen that when the cutter inclination X1 is center level, i.e., X1=10 o , the value of MRF decreases and then increases with the increase of X2; and with the decrease of X3, the MRF also decreases gradually. (11) According to the optimization calculation results of DesignExpert software, the minimum value of MRF was 99.636 N. At this time, the optimal parameter combinations were a cutter inclination angle of 11.055 o , cutter rotational speed of 215.669 r/min, and working speed of 0.276 m/s. Considering the cost of the optimized parameter combinations and the feasibility of the field test, the above values were rounded up to the closest integer, which was 11 o , 216 r/min, and 0.28 m/s respectively.…”

Section: Analysis Of the Influence Law Of Interaction Terms On Test I...mentioning

confidence: 99%

“…When working, the serrated mouth on the edge of the serrated disc cutter will clamp and shear the cabbage root [11], and the related process is shown in Figure 3b. During the root-cutting process, if analyzing from the starting point of root cutting, it suggests that the cabbage root is subjected to cutting force FX and clamping force FY, which is:…”

Section: Analysis Of Root Cutting Mechanismmentioning

confidence: 99%

“…According to the actual measurement and reference to literature related to cabbage and sugar cane cutting [13] [14], Δl is taken as 100 mm, dc (the average diameter of cabbage) is 200 mm, and cabbage planting row spacing is 450 mm, so as to determine R (the radius of the disc cutter) should not be longer than 125 mm. Considering that the cutter is installed with the ground into a certain angle of inclination, the range of R values can be appropriately increased.…”

Section: Analysis Of Root Cutting Mechanismmentioning

confidence: 99%

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Analysis on Root Cutting Mechanism of Self-Propelled Chinese Cabbage Harvester and Optimisation of Device Parameters

ZHOU,

ZENG,

NIU

et al. 2023

INMATEH

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For Chinese cabbage cutting device in the harvesting process, the problem of cutting resistance and low cutting root qualification rate will occur. This paper takes the Chinese cabbage root as the research object, analyses the root-cutting mechanism of Chinese cabbage, and determines that the main factors affecting its cutting effect are the cutter's inclination angle, rotational speed and its working speed. The finite element method is adopted to establish a rigid-flexible coupling model between the cutting device and the cabbage root, and the Response Surface Method (RSM) central composite design method is used to investigate the relationship among the cutter inclination angle, the cutter rotational speed as well as the working speed and Maximum root-cutting reaction force (MRF) of the cabbage and to further obtain the optimal combination of parameters. Field test results show that in the optimal combination of parameters, which means cutter inclination angle of 11o, cutter rotating speed of 216 r/min and working speed of 0.28 m/s, the root cutting effect is perfect. At this time, the root-cutting qualification rate of 92.81% and field productivity of 0.12 hm2/h, meet the requirements of the standard of Chinese cabbage harvesting mechanization. The results of the study can provide reference for optimization of Chinese cabbage harvesting equipment design.

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Section: Analysis Of the Influence Law Of Interaction Terms On Test I...mentioning

confidence: 99%

Section: Analysis Of Root Cutting Mechanismmentioning

confidence: 99%

Section: Analysis Of Root Cutting Mechanismmentioning

confidence: 99%

See 1 more Smart Citation

Analysis on Root Cutting Mechanism of Self-Propelled Chinese Cabbage Harvester and Optimisation of Device Parameters

ZHOU,

ZENG,

NIU

et al. 2023

INMATEH

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“…The test material was mature flax plants, the flax planting density was relatively uniform, with no collapse phenomenon, the test area was 0.17 hm 2 , the planted flax variety was Longya 14, the average plant height was 437.21 mm, the average number of flax capsules in a single plant was 6-11, the planting density was 689 plants•m −2 , and the planting pattern was typical dryland dense flax planting. The test machine's working parameters were set according to the working state of the test design, but in practice it was difficult to adjust the parameters precisely, so the parameters closest to the working state were used as the test machine's working parameters during the test [33,34]. An LED stroboscope (SW-6500, 60-49,999 r•min −1 , Guangzhou Suwei Electronic Instrument Co., LTD, Guangzhou, China.)…”

Section: Test Site Materials Equipmentmentioning

confidence: 99%

Optimal Design and Testing of a Crawler-Type Flax Combine Harvester

et al. 2023

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China is a large flax-growing country, with planting area and production ranking among the top three in the world. However, the cultivation range of flax in China is very broad, complex, and diverse, resulting in different planting scales and patterns, making it difficult to apply foreign large combine harvesters, and China lacks a dedicated flax combine harvester. This research improved the design of the 4LZ-4.0 crawler-type flax combine harvester for the regional features and flax cropping patterns in China. First, the structure, technical parameters, and working principles of the machine were introduced; second, the theoretical analysis and optimization of key components were performed; and finally, with the advancing speed of the machine, the speed of the threshing drum, and the speed of the suction fan as independent variables and the rate of removal and the total loss rate as response values, a three-factor, three-level response surface analysis method was used. For each component and response value, a mathematical model was created, and the factors and their interactions were evaluated and confirmed. The results demonstrated that the three parameters impact the threshing drum speed, advancing speed, and centrifugal fan speed in that order of priority, as well as the total loss rate in that order of priority. The machine’s optimal operating settings were 1.5 m·s−1 advancing speed, 788.49 r·min−1 threshing drum speed, and 885.34 r·min−1 centrifugal fan speed, and the validation test results indicated that under the typical dryland dense flax cultivation mode, it had a 97.46% threshing rate and 2.99% total loss rate after the test. This demonstrated that optimizing operational parameters may decrease losses in the process of mechanical flax harvesting, enhance harvesting efficiency, and satisfy the marketable flax harvesting standards.

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“…Because the cutting positions of the left and right cutters are asymmetric, and the two cutters overlap in the axial direction, there is still some cutting force in the X-axis and Z-axis directions (F 2 ). Under the combined action of the forces F 1z and F 3z in the Z-axis direction and the feeding direction and the cutting friction force of the cabbage, the longitudinal component force above the cabbage is larger after receiving, which is helpful to clamp the rhizome of the cabbage [25]. Due to the actual root-cutting process, the vertical plane angle γ, which is the angle between the resultant force F 3xy and the force F 3 in the XY plane, is small; therefore, F 1x can be approximated as the root main cutting force.…”

Section: Design Of Root Cutting Devicementioning

confidence: 99%

Design and Experiment of a Low-Loss Harvesting Test Platform for Cabbage

et al. 2023

Self Cite

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In order to explore the mechanism and influence mechanism of cabbage harvest damage, a low-loss cabbage harvest test platform was designed on the basis of combining the physical characteristics of cabbage with the mechanical characteristics of mechanical harvest and the cabbage harvest operation process. Through the design of key components of the test platform harvesting, the key parameters of the pulling-out device, the reel device, the flexible clamping and conveying device, and the double-disc cutting device were determined. The movement changes of cabbage during pulling out, conveying, and cutting were analyzed to clarify the process of damage generation and critical conditions of damage in cabbage harvesting operations. The test results showed that when the speed of the pulling out device was controlled at 80–120 r/min, the speed of the clamping and conveying device was controlled at 120–240 r/min, and the speed of the double disc cutter was controlled at 140–180 r/min, the average success rate of pulling on the low-loss harvesting test platform was 92.7%; the average damage rate of the pulling process was 7.32%; the average success rate of clamping and conveying was 88.6%; the average damage rate of the clamping and conveying link was 12%; the average success rate of root cutting was 89.3%; and the average damage rate of the cutting link was 11.34%. The average qualified rate of harvesting in the pulling link was 86.7%, the average qualified rate of harvesting in the clamping and conveying link was 75.3%, and the average qualified rate of harvesting in the cutting link was 77.3%. All the performance indicators meet the design requirements and relevant standards, and the research results can provide a reference for the development and structural improvement of low-loss harvesting equipment for cabbage.

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Parameter Optimization and Testing of a Self-Propelled Combine Cabbage Harvester

Cited by 12 publications

References 10 publications

Analysis on Root Cutting Mechanism of Self-Propelled Chinese Cabbage Harvester and Optimisation of Device Parameters

Analysis on Root Cutting Mechanism of Self-Propelled Chinese Cabbage Harvester and Optimisation of Device Parameters

Optimal Design and Testing of a Crawler-Type Flax Combine Harvester

Design and Experiment of a Low-Loss Harvesting Test Platform for Cabbage

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