| 基于勒洛多边形原理的播种机机械式离合装置研究 |
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| 引用本文： | 史乃煜,陈海涛,邹震,魏志鹏,张岩龙,祝祎璠.基于勒洛多边形原理的播种机机械式离合装置研究[J].农业机械学报,2021,52(2):64-74. |
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| 作者姓名： | 史乃煜 陈海涛 邹震 魏志鹏 张岩龙 祝祎璠 |
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| 作者单位： | 东北农业大学 |
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| 基金项目： | 现代农业产业技术体系建设专项资金项目（GARS-04）和国家重点研发计划项目（2018YFD0201004） |
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| 摘 要： | 针对播种机传统机械式离合装置动力切换行程长、接合瞬间冲击载荷大等问题,基于勒洛多边形原理设计了一种机械式离合装置。通过理论分析对该离合装置关键结构进行设计,利用虚拟仿真技术对离合装置动力接合瞬间的冲击载荷与动力切换响应速度进行模拟分析,应用三因素三水平正交试验方法,以播种单体为试验实施载体,以轴向倾角、齿轮半径比和作业速度为试验因素,以动力接合与切断滞后距离为试验评价指标,对影响离合装置作业性能的相关参数进行试验与优化。结果表明,在参数组合为轴向倾角20°、齿轮半径比0.3和作业速度1.5 m/s时,动力接合与切断滞后距离分别为1.2、0.6 cm。对比验证试验表明,相较于牙嵌式离合装置,优化后的勒洛五边形离合装置在保证播种质量的同时,动力接合与切断滞后距离分别降低82.4%、45.5%。
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| 关 键 词： | 播种单体 离合装置 勒洛多边形 仿真 正交试验 |
| 收稿时间： | 2020/9/24 0:00:00 |
Design of Planter Mechanical Clutch Based on Principle of Reuleaux Polygon |
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| SHI Naiyu,CHEN Haitao,ZOU Zhen,WEI Zhipeng,ZHANG Yanlong,ZHU Yifan.Design of Planter Mechanical Clutch Based on Principle of Reuleaux Polygon[J].Transactions of the Chinese Society of Agricultural Machinery,2021,52(2):64-74. |
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| Authors: | SHI Naiyu CHEN Haitao ZOU Zhen WEI Zhipeng ZHANG Yanlong ZHU Yifan |
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| Institution: | Northeast Agricultural University |
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| Abstract: | The ground wheel provides power for the seeding unit when the planter is working.In the turning and transportation state of the field,the traction planter can adjust the ground wheel to separate the seeding unit from the seed bed.At the same time,the ground wheel is used as a walking wheel.The device cuts off the ground wheel power to stop seeding.The mechanical clutch device has the advantages of strong environmental adaptability and high reliability.Due to the large amount of dust during the planting season,traditional planters mostly use mechanical clutch devices,and they are mainly divided into two types:jaw type and friction type.But compared with the electronically controlled clutch device,the mechanical clutch device has a longer power switching stroke,resulting in a lag in power switching.Based on the comprehensive analysis of the existing research results and methods,a mechanical clutch device was designed based on Reuleaux polygon principle to solve the problems of long power switching stroke and large instantaneous impact load of traditional jaw clutch device.Through theoretical analysis,the key structure of the clutch device was designed,the response speed of the clutch device and the instantaneous impact load of power coupling were simulated and analyzed through virtual simulation technology.Using the three-factor and three-level orthogonal test method,the seeding unit was used as the carrier,the axial inclination angle,gear radius ratio and operating speed were taken as test factors,and the power engagement and cut-off lag distance as test evaluation indicators,which were related to the performance of the clutch device.Parameters were tested and optimized.The test results showed that for the power engagement lag distance Y l,the axial inclination angle had a significant impact on it(P<0.01),and the gear radius ratio and operating speed had a significant impact on it(0.01
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| Keywords: | seeding unit clutch Reuleaux polygon simulation orthogonal test |
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