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Article: Lifting Performance of Crop Dividers with Variable Pitch Spiral Scrolls

Bai, Jing / Ma, Shaochun / Wang, Fenglei / Xing, Haonan / Ding, Zhengliang / Hu, Jiwei

Sugar tech. 2022 Dec., v. 24, no. 6

2022

Abstract: To study the lifting performance of crop dividers, three variable pitch spiral scrolls were designed in this paper, such as the spiral scrolls with increasing pitch, equal pitch, and decreasing pitch. Paired T test was conducted, which showed that the ... ...

Abstract	To study the lifting performance of crop dividers, three variable pitch spiral scrolls were designed in this paper, such as the spiral scrolls with increasing pitch, equal pitch, and decreasing pitch. Paired T test was conducted, which showed that the pitch distribution of scrolls had a significant effect on the lifting performance of crop divider. The machine forward speed, rotational speed, and installation angle of scrolls were taken as the test factors, and the lifting angle was selected as the test index. A response surface test (three factors and three levels) was carried out for three variable pitch spiral scrolls. The regression model was established through the test, and the optimal parameters of the model were also obtained: the forward speed was 0.8 m/s; rotational speed of scrolls was 120 r/min, and installation angle of scrolls was 60°. In addition, the regression model was verified and this study was expected to provide reference for design and improvement of crop dividers.
Keywords	models ; regression analysis ; sugars ; t-test
Language	English
Dates of publication	2022-12
Size	p. 1877-1886.
Publishing place	Springer India
Document type	Article
ZDB-ID	2433394-3
ISSN	0974-0740 ; 0972-1525
ISSN (online)	0974-0740
ISSN	0972-1525
DOI	10.1007/s12355-021-01077-0
Database	NAL-Catalogue (AGRICOLA)

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Article: Development and Testing of an Electro-Hydraulic System for Height Control of Sugarcane Harvester Basecutter

Ding, Zhengliang / Ma, Shaochun / Wang, Fenglei / Xing, Haonan / Bai, Jing / Hu, Jiwei

Journal of the ASABE. , v. 65, no. 2

2022

Abstract: HighlightsThis article focuses on an automatic control system for basecutter height.The influence of three factors on the performance indexes was studied.The best parameter combination for working performance was obtained.Abstract. Precision control of ... ...

Abstract	HighlightsThis article focuses on an automatic control system for basecutter height.The influence of three factors on the performance indexes was studied.The best parameter combination for working performance was obtained.Abstract. Precision control of the basecutter height of sugarcane harvesters is an effective method to reduce stubble damage and sugar loss. Due to uneven ground, it is difficult to maintain the desired basecutter height. Therefore, an electro-hydraulic control system for controlling the basecutter height was developed to address these issues. In this control system, an angle sensor was used to detect the basecutter height by measuring the swing angle of a profiling device. To evaluate the performance of the control system, a series of tests was conducted with a mobile cutting platform. Forward speed (1, 2, or 3 km h-1), ground wavelength (1, 2, or 3 m), and ground amplitude (4, 8, or 12 cm) were selected as influencing factors. ANOVA of the orthogonal experiment results showed that forward speed and ground amplitude had significant effects on the coefficient of variation (CV) of cutting depth, while ground wavelength had a non-significant effect. The influence order of the factors on the CV of cutting depth was forward speed > ground amplitude > ground wavelength. The best combination was determined as a forward speed of 1 km h-1, ground wavelength of 2 m, and ground amplitude of 4 cm. A single-factor test indicated that a forward speed of less than 2 km h-1 can meet the requirement that the CV is less than 10%. This study provides a reference for future design and development of automatic adjustment systems for basecutter height. Keywords: Automatic adjustment of basecutter height, Electro-hydraulic control system, Sugarcane, Sugarcane harvester.
Keywords	automation ; stubble ; sugarcane ; sugars ; wavelengths
Language	English
Size	p. 305-312.
Publishing place	American Society of Agricultural and Biological Engineers (ASABE)
Document type	Article
ISSN	2769-3287
DOI	10.13031/ja.14728
Database	NAL-Catalogue (AGRICOLA)

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Article: Improving the performance of a sugarcane harvester extractor using design changes validated by computational fluid dynamic modelling and experiment

Xing, Haonan / Ma, Shaochun / Li, Weiqing / Wang, Fenglei / Bai, Jing / Hu, Jiwei

IAgrE Biosystems engineering. 2022 Apr. 01,

2022

Abstract: Sugarcane harvester extractors are used to separate impurities during mechanical harvesting and their performance directly determines the impurity content of sugarcane billets. In this study, computational fluid mechanics (CFD) was used to analyse the ... ...

Abstract	Sugarcane harvester extractors are used to separate impurities during mechanical harvesting and their performance directly determines the impurity content of sugarcane billets. In this study, computational fluid mechanics (CFD) was used to analyse the flow field near the impeller of original design of extractor. The SST k-ω model and realisable k-ε model were used to calculate the turbulence in 2D and 3D flow fields respectively. The simulation results of 2D models showed that sharply shape from the leading to trailing edges of the original blade design could cause more energy losses. An improved blade design with smoother leading edge and trailing edges had improved performance with a maximum lift coefficient increased by 28.7%. 3D simulation results showed that when the fan speed was 1050 rpm, 1350 rpm and 1650 rpm respectively, the total pressure efficiency of the improved extractor was 11.45%, 9.03% and 6.7% higher than the original extractor, respectively. Impurity content experiments showed that when the feed rate was 1 kg s⁻¹, 2 kg s⁻¹ and 3 kg s⁻¹, compared with the original extractor, the impurity content of the improved extractor decreased by 0.46, 0.41 and 0.71 percentage points at most. The results showed that the impurity content and energy consumption of the improved extractor was less than that of the original design of extractor.
Keywords	energy ; impellers ; sugarcane ; turbulent flow
Language	English
Dates of publication	2022-0401
Publishing place	Elsevier Ltd
Document type	Article
Note	Pre-press version
ZDB-ID	2075942-3
ISSN	1537-5110
ISSN	1537-5110
DOI	10.1016/j.biosystemseng.2022.04.001
Database	NAL-Catalogue (AGRICOLA)

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Article: Key Technologies of Crop Dividers of Sugarcane Harvesters: A Review

Bai, Jing / Ma, Shaochun / Liu, Binchang / Wang, Fenglei / Xing, Haonan / Ding, Zhengliang / Hu, Jiwei

Applied engineering in agriculture. 2021, v. 37, no. 5

2021

Abstract: The crop divider is an important mechanism of a sugarcane harvester, which affects the efficiency and quality of sugarcane mechanical harvesting. This article mainly summarized the key technologies of crop dividers. Firstly, four crop dividers (spiral ... ...

Abstract	The crop divider is an important mechanism of a sugarcane harvester, which affects the efficiency and quality of sugarcane mechanical harvesting. This article mainly summarized the key technologies of crop dividers. Firstly, four crop dividers (spiral crop divider, finger-chain crop divider, combined crop divider, and lever crop divider) were briefly reviewed. The advantages and disadvantages of different crop dividers were then summarized. The research status of crop dividers was introduced with theoretical analysis, simulation studies, and field experiments. Finally, the scientific researches and commercial machines were compared for a comprehensive review. Additionally, the potential new technologies and development directions of spiral crop dividers were presented to improve the performance and adaptability of sugarcane harvesters. This article is expected to provide a reference for the design of crop dividers.
Keywords	agriculture ; crops ; engineers ; field experimentation ; mechanical harvesting ; research ; sugarcane ; sugarcane harvesters
Language	English
Size	p. 839-849.
Publishing place	American Society of Agricultural Engineers
Document type	Article
ZDB-ID	54345-7
ISSN	0883-8542
ISSN	0883-8542
DOI	10.13031/aea.14694
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Long-term outcome of NPM1 mutated acute myeloid leukemia: A single-institution experience.

Sayar, Hamid / Bashardoust, Parvaneh / Cripe, Larry / Chakraborty, Sujata / Bai, Shaochun

American journal of hematology

2017 Volume 92, Issue 2, Page(s) E17–E18

Language	English
Publishing date	2017-02
Publishing country	United States
Document type	Letter
ZDB-ID	196767-8
ISSN	1096-8652 ; 0361-8609
ISSN (online)	1096-8652
ISSN	0361-8609
DOI	10.1002/ajh.24601
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: Experimental Study on Tensile Properties of Sugarcane Leaves

Bai, Jing / Ma, Shaochun / Hu, Jiwei / Wei, Yi / Wang, Fenglei / Xing, Haonan

Applied engineering in agriculture. 2021, v. 37, no. 4

2021

Abstract: The tensile properties of sugarcane leaves are critical factors affecting the harvesting quality of sugarcane harvesters. Thus, it is important to investigate the tensile properties of sugarcane stalks and leaves. The selected test factors were leaf ... ...

Abstract	The tensile properties of sugarcane leaves are critical factors affecting the harvesting quality of sugarcane harvesters. Thus, it is important to investigate the tensile properties of sugarcane stalks and leaves. The selected test factors were leaf moisture content and sheath diameter, and the stalk-leaf connecting force was selected as test index. The tests were conducted with two moisture content levels of 15% and 20%, and three sheath diameters of 22, 26, and 30 mm. The stress-strain curves of stalks and leaves were plotted to show how the tensile force varied during the tensile test. The results showed that there was a strong linear correlation between the stalk-leaf connecting force and diameter of leaf sheath, and the connecting force also increased with the increasing moisture content. In addition, leaf tensile forces in longitudinal direction were much larger than in transverse direction. Two-way ANOVA revealed that both of the moisture contents (A) and sheath diameters (B) had significant effects on the stalk-leaf connecting force (p < 0.01), however, the interaction between A and B was not significant (p > 0.1). This study provides a theoretical reference for the design and improvement of crop dividers of sugarcane harvester.
Keywords	agriculture ; leaves ; sugarcane ; water content
Language	English
Size	p. 615-621.
Publishing place	American Society of Agricultural Engineers
Document type	Article
ZDB-ID	54345-7
ISSN	0883-8542
ISSN	0883-8542
DOI	10.13031/aea.14170
Database	NAL-Catalogue (AGRICOLA)

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Article: Aerodynamic Performance Evaluation of Sugarcane Harvester Extractor Based on CFD

Xing, Haonan / Ma, Shaochun / Wang, Fenglei / Bai, Jing / Ma, Jinzhi

Sugar tech. 2021 June, v. 23, no. 3

2021

Abstract: The ability of extractors to remove impurities has an important effect on harvesting quality and the benefit to sugar mills and sugarcane growers. Due to the low impurity removal efficiency of the existing harvesters, improving the performance of ... ...

Abstract	The ability of extractors to remove impurities has an important effect on harvesting quality and the benefit to sugar mills and sugarcane growers. Due to the low impurity removal efficiency of the existing harvesters, improving the performance of extractors is an urgent problem to address. In this paper, a series of simulation analyses were carried out using an existing extractor. A simplified model of the extractor was established, and the realizable k–ε turbulence model was used to calculate the airflow distribution and performance curves of the extractor for various impeller speeds. The simulations were in good agreement with the previously measured results. The results revealed that the impeller speed affects only the air velocity in the airflow field; it does not affect the velocity distribution of the airflow field. The structure of the discharge hood should be improved to avoid local eddy currents and an uneven distribution of airflow velocity. Additionally, increasing the impeller speed can enhance the adaptability of the extractor to a higher cane feed rate. This research will be helpful for guiding the design and optimization of sugarcane harvester extractors.
Keywords	aerodynamics ; air ; air flow ; impellers ; models ; sugarcane ; sugars ; turbulent flow
Language	English
Dates of publication	2021-06
Size	p. 627-633.
Publishing place	Springer India
Document type	Article
Note	NAL-AP-2-clean
ZDB-ID	2433394-3
ISSN	0974-0740 ; 0972-1525
ISSN (online)	0974-0740
ISSN	0972-1525
DOI	10.1007/s12355-020-00920-0
Database	NAL-Catalogue (AGRICOLA)

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Article: Sugarcane Basecutters: A Critical Review

Wang, Fenglei / Ma, Shaochun / Xing, Haonan / Bai, Jing / Yang, Yezhen / Hu, Jiwei / Wei, Yi

Applied engineering in agriculture. 2021, v. 37, no. 2

2021

Abstract: Basecutter is a core component of a sugarcane harvester, and its performance significantly influences cane yield and harvesting efficiency. Therefore, it is meaningful to conduct a critical review of sugarcane basecutters. In this article, an ... ...

Abstract	Basecutter is a core component of a sugarcane harvester, and its performance significantly influences cane yield and harvesting efficiency. Therefore, it is meaningful to conduct a critical review of sugarcane basecutters. In this article, an introduction about basecutter structure was performed first; then two cutting theories (support/free cutting) and two cutting modes (straight/sliding cutting) were briefly reviewed; and the advantages and disadvantages of different cutting modes were summarized. It was followed by a comprehensive introduction of three optimization methods: theoretical analysis and simulation, indoor experiments, and field experiments. Finally, four potential research interests in improving basecutting quality and exploring the stubble damage process were discussed. In this review, the comprehensive, detailed, and accurate information about sugarcane basecutter was expected to provide engineers with a technology reference to improve the basecutting performance.
Keywords	agriculture ; stubble ; sugarcane
Language	English
Size	p. 251-265.
Publishing place	American Society of Agricultural Engineers
Document type	Article
ZDB-ID	54345-7
ISSN	0883-8542
ISSN	0883-8542
DOI	10.13031/aea.14179
Database	NAL-Catalogue (AGRICOLA)

In stock of ZB MED Bonn / Germany

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Article: Design and Development of Sugarcane Top Chopper and its Field Performance

Hu, Jiwei / Ma, Shaochun / Wang, Fenglei / Xing, Haonan / Bai, Jing / Wei, Yi / Ding, Zhengliang

Sugar tech. 2021 Oct., v. 23, no. 5

2021

Abstract: As a by-product of sugarcane industry, sugarcane green tops has not been effectively collected and utilized in the mechanized harvesting of sugarcane. It has caused significant economic losses. In this study, a tractor mounted sugarcane top chopper was ... ...

Abstract	As a by-product of sugarcane industry, sugarcane green tops has not been effectively collected and utilized in the mechanized harvesting of sugarcane. It has caused significant economic losses. In this study, a tractor mounted sugarcane top chopper was designed. A series of field tests were carried out to explore the effect of the cutting speed and cutting drum gap on cane top recovery weight and machine chopping efficiency. In the field experiment, a 2 factor 3 level test was conducted to examine the significance of tested factors’ effects on evaluation indicators. According to the 2 factor 3 level test, the effect of cutting speed on recovery weight was recorded better than that of cutting the drum gap. Cutting speed had a significant impact on chopping efficiency, but in case of cutting drum gap had no significant impact on it. The optimal parameters combination for good working performance of the machine was obtained with cutting speed of 150 rpm and cutting drum gap of 20 mm. This paper analyzed the relationship between the chopping performance and the two critical factors that provided a theoretical basis for the design and development of sugarcane top chopper.
Keywords	byproducts ; field experimentation ; mechanization ; sugar industry ; sugarcane ; sugars ; tractors
Language	English
Dates of publication	2021-10
Size	p. 1192-1198.
Publishing place	Springer India
Document type	Article
ZDB-ID	2433394-3
ISSN	0974-0740 ; 0972-1525
ISSN (online)	0974-0740
ISSN	0972-1525
DOI	10.1007/s12355-021-00990-8
Database	NAL-Catalogue (AGRICOLA)

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Article: High-Speed Photography Analysis on Sugarcane Base Cutting Process of Contra-Rotating Basecutters

Wang, Fenglei / Ma, Shaochun / Xing, Haonan / Bai, Jing / Ma, Jinzhi / Hu, Jiwei / Yang, Yezhen

Sugar tech. 2021 Oct., v. 23, no. 5

2021

Abstract: In mechanical sugarcane harvesting, the basecutter is a critical component determining the basecutting quality and energy consumption, both of which have a close relationship with basecutting times (number of contacts between sugarcane and basecutting ... ...

Abstract	In mechanical sugarcane harvesting, the basecutter is a critical component determining the basecutting quality and energy consumption, both of which have a close relationship with basecutting times (number of contacts between sugarcane and basecutting blades to completely cut cane stools). Therefore, the purpose of this study was to investigate the relationship between the influencing factors and basecutting times by employing a high-speed camera. In this paper, the influencing factors were determined to be the rotational speed (RS) and tilt angle (TA) of the cutting disk, sugarcane stalk feeding rate (FR), and sugarcane stool diameter (SD). Four single-factor experiments and an orthogonal experiment (four factors and four levels) were carried out. In addition, two methods were employed to analyze the experimental data: analysis of range (ANOR) and analysis of variance (ANOVA). The results showed that RS, TA, and SD had positive effects on the basecutting times, while FR had a negative effect. In addition, the order of influence of the above four factors on the basecutting times, obtained by ANOR, was FR > SD > RS > TA (2.625 > 1.75 > 1.425 > 1), and the optimal combination (150 rpm of RS, 5° of TA, 60 mm of SD, and 1.3 m/s of FR) to minimize the basecutting times was also determined. Based on the ANOVA results, basecutting times were significantly affected by FR and RS (p = 0.008, 0.047 < 0.05), while SD and TA had no significant effect (p = 0.09, 0.121 > 0.05). The results of this study will provide a reference for engineers to design and optimize sugarcane basecutters.
Keywords	analysis of variance ; cameras ; energy ; photography ; sugarcane ; sugars
Language	English
Dates of publication	2021-10
Size	p. 1118-1125.
Publishing place	Springer India
Document type	Article
ZDB-ID	2433394-3
ISSN	0974-0740 ; 0972-1525
ISSN (online)	0974-0740
ISSN	0972-1525
DOI	10.1007/s12355-020-00942-8
Database	NAL-Catalogue (AGRICOLA)

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