Design and tests of biomimetic blades for soil-rototilling and stubble-breaking

Jin, Tao; Ji, Wenfeng; Hu, Jia; Chen, Donghui; Yang, Xinrong

doi:10.1016/s1672-6529(14)60140-2

Cited by 29 publications

(28 citation statements)

References 7 publications

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“…3, with an increase in the number of discs on the roller from 6 to 12 and more, the value of the location coefficient changes insignificantly and is in the range of 0.22 ... 0.24. Consequently, the optimal value of the coefficient of the arrangement of the discs on the tillage roller can be considered 0.22 ... 0.24, which is consistent with the arrangement of the studs along the circumference of the wide rings on the tail of the girdle tail [7][8].…”

Section: Resultsmentioning

confidence: 55%

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Substantiation of the arrangement and parameters of the loosening compacting discs of tillage rollers with a bionic approach

2020

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The article presents the methods and results of bionic modeling in agricultural mechanics, which made it possible to substantiate the arrangement and parameters of the working bodies of the loosening compacting discs of tillage rollers adapted to the soil environment using the regularities of the arrangement of thorns on wide rings of the tail in the biological prototype of the girdle tail (Cordylidae). Based on the principle of multi-contact action of the teeth and toothed plates of the roller discs on the soil layer, the coefficient of the arrangement of the discs on the roller is equal to 0.22 ... 0.24, as well as the number of toothed plates and teeth on the working surface of the loosening compacting disc of the roller, which is in the range of 6 ... 12, which is consistent with the arrangement of spines along the circumference of the wide rings on the tail of the girdle. The results of experimental studies, confirming the decrease in the traction resistance of the proposed working bodies of the loosening compacting discs of tillage rollers for surface tillage are presented.

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Section: Resultsmentioning

confidence: 55%

“…Examining function (7) for the extremum by the Lagrange finite-increment theorem, we finally obtain kopt, determined by the solution of the quadratic equation:…”

Section: Resultsmentioning

confidence: 99%

Substantiation of the arrangement and parameters of the loosening compacting discs of tillage rollers with a bionic approach

2020

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“…The maximum cutting torque data of stubbles over the 4 types of cutting devices are shown in Figure 10. Clearly, the cutting torque -time curves of S1 and S3 at 3 working velocities were all divided into 3 stages [32] . With Figure 10a as an example, OA(OA′) was the first cutting stage, and the cutting torque gradually rose and maximized.…”

Section: Resultsmentioning

confidence: 99%

Design of bionic locust mouthparts stubble cutting device

Zhao¹,

Guo²,

Lu³

et al. 2020

International Journal of Agricultural and Biological Engineering

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Given the technical problems of low maize stubble breaking efficiency, large cutting torque and high power consumption faced during springtime no-till planting in Northeast China, we designed a high-performance coupling bionic stubble cutting device capable by integrating the structure (multi-segment and serrate) and cutting mode (isokinetic and symmetrical) of locust mouthparts. Methods of bionic construction, mechanism design, theoretical analysis, parameter optimization, Arduino systems and intelligent control were combined to design a planetary gear mechanism and an intelligent speed control system. In particular, the bionic cutting blade could reconstruct the multi-segment and serrate structure of locust mouthparts, while the planetary gear mechanism and the intelligent speed control system jointly comprised the bionic drive system, which could simulate the isokinetic and symmetrical cutting mode, thereby bionically coupling morphological structures and movement patterns. Analysis of comparative tests showed the coupling bionic cutting device could reduce the cutting torque by 26.6%-31.6% and the power consumption by 21.9%-26.1%. This work confirmed that coupling bionic method can significantly improve the stubble cutting efficiency, which was a valuable contribution to the design of stubble cutting device for no-till planter.

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“…Li et al [ 5 ] showed that a biomimetic disc designed based on the profile curves of the second claw performed better in structural strength and cutting efficiency using finite element analysis. Tong et al [ 6 ] found out that the torque of the optimal biomimetic blades designed based on the geometries of the tips of claws was lower during soil-rototilling and stubble-breaking operations compared with the conventional universal blade. As is well known, the mole has evolved into the structure of five-claw combination to self-adapt to its living circumstances.…”

Section: Introductionmentioning

confidence: 99%

Study on the Interaction between Soil and the Five-Claw Combination of a Mole Using the Discrete Element Method

Yang

Jin

et al. 2018

Applied Bionics and Biomechanics

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A mole is a born digger spending its entire existence digging tunnels. The five claws of a mole's hand are combinative to cut soil powerfully and efficiently. However, little was known in detail about the interaction between the soil and the five-claw combination. In this study, we simulated the soil cutting process of the five-claw combination using the discrete element method (DEM) as an attempt for the potential design of soil-engaging tools to reduce soil resistance. The five-claw combination moved horizontally in the soil bin. Soil forces (draught and vertical forces) and soil failure (soil rupture distance ratio) were measured at different rake angles and speeds. Results showed that the draught and vertical forces varied nonlinearly as the rake angle increased from 10 to 90°, and both changed linearly with the speed increasing from 1 to 5 m/s. The curve of the soil rupture distance ratio with rake angles could be better described using a quadric function, but the speed had little effect on the soil rupture distance ratio. Notably, the soil rupture distance ratio of the five-claw combination in simulation was on average 19.6% lower than the predicted ratio of simple blades at different rake angles indicating that the five-claw combination could make less soil failure and thereby produce lower soil resistance. Given the draught and vertical forces, the performance of the five-claw combination was optimized at the rake angle of 30°.

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Design and tests of biomimetic blades for soil-rototilling and stubble-breaking

Cited by 29 publications

References 7 publications

Substantiation of the arrangement and parameters of the loosening compacting discs of tillage rollers with a bionic approach

Substantiation of the arrangement and parameters of the loosening compacting discs of tillage rollers with a bionic approach

Design of bionic locust mouthparts stubble cutting device

Study on the Interaction between Soil and the Five-Claw Combination of a Mole Using the Discrete Element Method

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