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Topic

Technologies and technical equipment for agriculture and food industry

Volume

Volume 65 / No. 3 / 2021

Pages : 410-420

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PARAMETER OPTIMIZATION AND EXPERIMENT OF SLIDER-HOLE-WHEEL SEED-METERING DEVICE BASED ON DISCRETE ELEMENT METHOD

基于离散元法的滑片型孔轮式排种器参数优化与试验

DOI : https://doi.org/10.35633/inmateh-65-43

Authors

Xiaoshuang Zhang

School of Engineering, Anhui Agricultural University, Hefei 230036, China

(*) Dequan Zhu

Anhui Province Engineering Laboratory of Intelligent Agricultural Machinery and Equipment, Hefei 230036, China

Kang Xue

School of Engineering, Anhui Agricultural University, Hefei 230036, China

Lanlan Li

School of Engineering, Anhui Agricultural University, Hefei 230036, China

Jianjun Zhu

School of Engineering, Anhui Agricultural University, Hefei 230036, China

Shun Zhang

School of Engineering, Anhui Agricultural University, Hefei 230036, China

Juan Liao

School of Engineering, Anhui Agricultural University, Hefei 230036, China

(*) Corresponding authors:

[email protected] |

Dequan Zhu

Abstract

To improve the adaptability and precision of the slider-hole-wheel seed-metering device to meet the requirements of precision sowing, the single factor simulation experiments and the three factors three levels of orthogonal simulation experiments were carried out based on the discrete element method. The rotation speed of the seeding shaft, the shape of the hole, and the depth of the hole were set as experiment factors. The results of simulation experiments showed that the qualified rate was the highest when the rotation speed of the seeding shaft was 30 r/min, the shape of the hole was oval, and the depth of the hole was 9 mm. The qualified rate, replay rate, and miss-seeding rate were 89.09 %, 3.64 %, and 7.27 %,respectively. The hybrid rice seeds of Zhongnong 2008, Chuangliangyou 4418, and Gangyou 898 were chosen as the materials for the bench and field seeding performance tests to verify the reliability of the simulation results. The test results showed that the qualified rate of Zhongnong 2008, Chuangliangyou 4418, and Gangyou 898 seed in bench tests were 85.07 %, 85.20 %, and 82.13 %, and the qualified rate of Zhongnong 2008, Chuangliangyou 4418, and Gangyou 898 seed in field tests were 82.13 %, 82.27 %, and 80.53 %. The seeding performance with the three kinds of rice seeds could meet the agronomic requirements for precision sowing of hybrid rice. The paper provided the basis for the structure optimization and seeding performance improvement of the slider-hole-wheel seed-metering device.

Abstract in Chinese

为了提高滑片型孔轮式排种器的适应性和排种精度,满足水稻精量穴播要求,采用离散元法,以排种轴转速、型孔形状、型孔深度为试验因素,开展了单因素仿真试验和3因素3水平正交仿真试验。仿真结果表明,在排种轴转速为30 r/min、型孔形状为椭圆形、型孔深度为9 mm时,排种合格率最高,合格率、重播率、漏播率分别为89.09 %、3.64 %、7.27 %。为了验证仿真结果的可靠性,以中农2008、创两优4418和冈优898为试验材料,进行了排种器台架性能试验和田间播种试验。试验结果表明,中农2008、创两优4418、冈优898种子台架试验排种合格率分别为85.07 %、85.20 %、82.13 %,中农2008、创两优4418、冈优898种子田间试验播种合格率分别为82.13 %、82.27 %、80.53 %,3种水稻种子的排种性能均能满足杂交水稻精量播种的农艺要求。该研究为滑片型孔轮式排种器结构优化及排种性能提升提供了依据。

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