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邢鹤琛,廖庆喜,王磊,王都,廖宜涛,王迪,余琦.油麦兼用斜锥型孔轮式集排器设计与试验[J].华中农业大学学报,2019,38(5):143-151
油麦兼用斜锥型孔轮式集排器设计与试验
Design and test of oblique taper hole type wheel centralized metering device for rapeseed and wheat
投稿时间:2018-12-10  
DOI:
中文关键词:  兼用型排种器  斜锥型孔轮  破损率  多行排种  油菜  小麦
英文关键词:dual purpose seed metering device  oblique hole type wheel  damage rate  multi row seeding  rapeseed  wheat
基金项目:国家重点研发计划项目(2017YFD0700702); 国家自然科学基金项目(51875229); 国家油菜产业体系专项(CARS-12)
作者单位E-mail
邢鹤琛 华中农业大学工学院/农业农村部长江中下游农业装备重点实验室武汉 430070 xinghc1993@163.com 
廖庆喜 华中农业大学工学院/农业农村部长江中下游农业装备重点实验室武汉 430070 liaoqx@mail.hzau.edu.cn 
王磊 华中农业大学工学院/农业农村部长江中下游农业装备重点实验室武汉 430070  
王都 华中农业大学工学院/农业农村部长江中下游农业装备重点实验室武汉 430070  
廖宜涛 华中农业大学工学院/农业农村部长江中下游农业装备重点实验室武汉 430070  
王迪 华中农业大学工学院/农业农村部长江中下游农业装备重点实验室武汉 430070  
余琦 华中农业大学工学院/农业农村部长江中下游农业装备重点实验室武汉 430070  
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中文摘要:
      为满足长江中下游地区油菜和小麦播种要求、提高播种机作业效率、简化播种机结构并有效控制机械式排种方式的种子易破损和堵塞型孔等问题,设计一种无需清种与护种装置的油麦兼用斜锥型孔轮式集排器,提出一种油菜双圈、小麦三圈型孔交错排布以及斜锥形型孔结构。构建充种、携种、投种和输种等过程的力学模型,分别确定排种器充种时的最小充填高度比基准高度低10 mm、验证该集排器结构的合理性、得到油菜小麦型孔后倾角分别低于30°和15°时,油菜和小麦的最大投种角分别可达40.8°、34.4°以及油菜和小麦输种管与水平面夹角需不小于33°。正交试验结果显示,油菜型孔后倾角20°、充填高度为基准高度、转速20 r/min,小麦型孔后倾角5°、充填高度20 mm、转速15 r/min,油菜、小麦各行排量一致性变异系数分别低于6.00%、6.32%,总排量稳定性变异系数分别低于1.25%、1.00%,破损率均低于0.5%。田间试验表明,油菜、小麦播种试验出苗效果良好。
英文摘要:
      An oblique taper hole type wheel centralized metering device for rapeseed and wheat without cleaning and protection device was developed to satisfy the requirements of planting rapeseed and wheat in the middle and lower reaches of the Yangtze River in China,and to improve the efficiency of the planter and simplify the structure of the planter.The key component of the metering device was the hole type wheel designed with two rows of staggered holes for rapeseed and three rows for wheat.An oblique tapered hole structure was developed to prevent seed from plugging holes and reduce the damage rate of seed.The mechanical model of filling,carrying,throwing,and delivering seed were established.The results showed that the minimum height of the seed filling was 10 mm lower than the reference height.The rationality of the device structure was verified.The maximum seeding angle of rapeseed and wheat reached 40.8° and 34.4° when the back angle of the hole ranged from 0° to 30° and from 0° to 15°,respectively.The angle between the seed tube and the horizontal plane should be no less than 33°.The results of orthogonal test showed that the back angle of the hole was 20°,the filling height was the reference height,the rotation speed was 20 r/min for rapeseed.The back angle of the hole was 5°,the filling height was 20 mm,the rotation speed was 15 r/min for wheat.The variation coefficient of the consistency of each line displacement was less than 6.00% for rapeseed and 6.32% for wheat.The coefficient of variation of total displacement stability was less than 1.25% for rapeseed and 1.00% for wheat.The damage rate of both rapeseed and wheat was less than 0.5%.The results of field test showed that both rapeseed and wheat had good sowing.It will provide a reference for designing the structure of mechanical seed metering device for rapeseed and wheat.
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