Cutting speed follow-up adjusting system of bidirectional electric drive side cutter for rape combine harvester

Guan, Zhuohuai; Wu, Chongyou; Li, Ying; Mu, Shenglin; Jiang, Lan

doi:10.1177/0036850420935728

Cited by 13 publications

(8 citation statements)

References 9 publications

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“…They optimized the structural parameters of the rapeseed cutting knife to reduce the cutting force of the rapeseed combine harvester’s cutting platform and decrease the cutting loss of rapeseed, providing reference for further improvement. Guan et al 14 designed a bidirectional electric-driven row vertical cutting device to solve the problem of large vibration and high loss rate of traditional rapeseed combine harvester row vertical cutting knives. Ran et al 15 designed a dual-action cutting knife planetary wheel drive, which has small cutting knife vibration, low power consumption, stable operation performance, and significantly reduces the loss of cutting platform grain.…”

Section: Introductionmentioning

confidence: 99%

Finite element analysis and experiment of cutting rape shoot stalks based on Ansys

Xiong,

Ai,

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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The cutting device is a key component of the rape shoot stalks harvester, and currently there is little research on the cutting device for edible rape shoots. Based on the material characteristics of edible rape shoot stalks, this paper conducts mechanical and finite element analysis on the cutting device to ensure low-resistance and high-efficiency cutting operations. Slip cutting angle of the cutter is set at 20° to ensure that the stalk is clamped during cutting, and the cutting speed ratio of the cutter is determined to be 0.8 to avoid missed cuts and overcuts. The cutting angle of inclination is upward to assist the post-cutting rape shoot stalks to tilt backward. The maximum cutting stress and cutting energy consumption of the blade are used as evaluation indicators for the experiment. Through single-factor simulation experiments, it is found that the cutting speed and cutting angle of inclination have a significant impact on the low-resistance and high-efficiency cutting of the device. Through multi-factor simulation experiments, the optimal working parameter combination of the device is determined to be a cutting speed of 0.3 m/s and a cutting angle of inclination of 7.13°. At this working parameter, the device can achieve low-resistance and high-efficiency cutting, and it has been verified that the cutting device can cut the stalk in one go with a smooth cut without tearing. This paper provides a theoretical basis for the design and parameter determination of the cutting device for vegetable rape shoot stalks harvesters.

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Section: Introductionmentioning

confidence: 99%

Finite element analysis and experiment of cutting rape shoot stalks based on Ansys

Xiong,

Ai,

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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“…High rape machine harvesting losses are one of the main reasons limiting the healthy and rapid development of China's rape industry [4,5]. According to statistics, the losses of the cu ing table during rape harvesting are relatively large and can reach 40% of the total harvesting losses on average [6,7]. The reel is an important working part of the rape combine harvesting cu er [8][9][10][11], its role is to guide the rape to be cut to the cu er or to support the fallen rape in the guidance process, to support the stalks and push the cut stalks backwards during cu ing, to prevent the cut stalks from piling up on the cu er causing knife blockage and congestion [12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Design and Parameter Optimization of Variable Speed Reel for Oilseed Rape Combine Harvester

Zhang¹,

Liu²,

Yang³

et al. 2023

Preprint

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A variable speed anti-tangling reel mechanism was designed to address the problems of tangling, hanging and rewinding of the tassel wheel and the high paddling loss in the current Chinese rape combine harvester cutting table. The kinematic equations of the reel mechanism were developed, and the analysis showed that the speed in the entry stage is low and the speed in the exit stage is high, and the attitude of the reel teeth change with the rape plant movement during the whole paddling process. A single-factor test and a multi-factor regression orthogonal combination test were carried out using the cutting table loss rate of rape harvesting as the evaluation index. The main and secondary factors affecting the cutting table loss of the variable speed reel were obtained as the reel speed, the machine travel speed and the ground angle of the frame. A mathematical model of regression of cutter loss and the main influencing factors was established, with the coefficient of determination R2 = 0.9918. The optimal combination of parameters for the variable speed reel was obtained with the lowest cutting table loss rate in rape harvesting as the optimization target: reel speed 25r/min, frame parallel to the ground and implement travel speed 0.7m/s. Field validation tests and comparative tests of cutting table loss of the two reels were carried out. The test results show that the regression mathematical model of the cutting table loss is more accurate, and the cutting table loss is reduced by 13.9% with the variable speed reel compared to the cam-action reel, and there are no problems with the paddle teeth hanging and tangling during the paddling process.

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“…Xu et al, (2014), Chen et al, (2011) and He, (2012), tested and analysed the vibration of combine header. Guan et al (2019) proposed bidirectional electric drive side knife for rape combine harvester and a cutting speed adaptive control system, compared to the fixed speed cutting, header loss was reduced by 14.05% and side knife loss was reduced by 34.76% (Copur et al, 2017). However, there are few reports on the application of frequency control of machine cutter.…”

Section: Introductionmentioning

confidence: 99%

Development and Test of Frequency Subsection Regulation System for Combine Harvester Header Cutter

Liu

Guan

Chen

2021

INMATEH

Self Cite

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Aiming at the problems that the cutter frequency of combine harvester is difficult to be adjusted adaptively with the forward speed, and that the missed cut or repeated cut may cause the harvesting loss to increase and the operation effect to fluctuate greatly, the system is designed to regulate the cutter frequency of combine harvester by sections. By constructing the cutter trajectory equation, the influence of the relationship between the forward speed of the harvester and the cutting frequency on the cutting area is analyzed, and the optimum cutting frequency range at different operating speeds is determined. The results show that the error between the actual cutting frequency and the desired frequency of the cutter is less than 0.8Hz, and the maximum relative error is less than 8.6%; the average steady-state adjustment time of the system is 1.3s when the input cutting frequency of the device changes abruptly. The research class provides technical support for the improvement of the combine harvester handling system and the increase of the machine automation level.

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Cutting speed follow-up adjusting system of bidirectional electric drive side cutter for rape combine harvester

Cited by 13 publications

References 9 publications

Finite element analysis and experiment of cutting rape shoot stalks based on Ansys

Finite element analysis and experiment of cutting rape shoot stalks based on Ansys

Design and Parameter Optimization of Variable Speed Reel for Oilseed Rape Combine Harvester

Development and Test of Frequency Subsection Regulation System for Combine Harvester Header Cutter

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