基于牧草压缩特性的凸轮式牧草压捆机设计
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摘要
牧草是发展畜牧业的基础,但由于其地理分布和自身松散的特性,导致牧草储运成本过高,通常需要对牧草进行压缩打捆处理。牧草压缩过程中预压缩阶段位移大压力小,致密阶段位移小压力大,压缩过程中牧草的压缩特性不断变化。为此,设计了一凸轮式牧草压捆机,利用凸轮能够实现复杂运动的特点,使牧草在压缩过程中进行变速压缩,符合压缩特性曲线的变化规律。通过Pro/E软件对整机进行干涉检测以及运动学仿真模拟,结果表明:该机构可以实现快速进行预压缩、慢速进行压紧阶段的压缩,进而提高牧草压缩效率并达到降低能耗的目的。
Hay is the foundation of animal husbandry,but due to its geographical distribution and its loose nature,the costs of storage and transportation of hay are too high,so it is necessary to be compressed. The compression characteristics of the forage during the compression process are constantly changing. In the pre-compression stage,it is normally with large displacement but with small pressure; and in the densifying phase,it is with small displacement but large pressure. In this paper,a cam-type hay baler was designed,in which the characteristics of the complex movement can be realized by using the cam mechanism. The hay is compressed in variable speed during the compression process which is matched the variation rule of the compression characteristic curve. Through the software Pro/E,the interference detection and kinematics simulation were performed for the whole machine. The results prove that the new machine can achieve rapid pre-compression,slow compaction stage of compression,and thus improve forage compression efficiency and achieve the goal of reducing energy consumption.
Hay is the foundation of animal husbandry,but due to its geographical distribution and its loose nature,the costs of storage and transportation of hay are too high,so it is necessary to be compressed. The compression characteristics of the forage during the compression process are constantly changing. In the pre-compression stage,it is normally with large displacement but with small pressure; and in the densifying phase,it is with small displacement but large pressure. In this paper,a cam-type hay baler was designed,in which the characteristics of the complex movement can be realized by using the cam mechanism. The hay is compressed in variable speed during the compression process which is matched the variation rule of the compression characteristic curve. Through the software Pro/E,the interference detection and kinematics simulation were performed for the whole machine. The results prove that the new machine can achieve rapid pre-compression,slow compaction stage of compression,and thus improve forage compression efficiency and achieve the goal of reducing energy consumption.
引文
[1]刘敬华,金鸷,王彦玲.畜牧业适度规模经营发展的策略[J].养殖技术顾问,2012(2):275-275.
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[3]张博.高密度饲草压捆机设计[D].太谷:山西农业大学,2013.
[4]邵志强.约翰迪尔牧草机械[J].现代化农业,2003(11):36.
[5]克拉斯QUADRANT 5200/4200系列打捆机[J].河北农机,2017(4):69.
[6]杨明韶,李旭英,杨红蕾.牧草压缩过程的研究[J].农业工程学报,1996(1):60-64.
[7]孟庆福,黄明智,韩国军.方草捆压捆机压缩装置的研究与分析[J].农村牧区机械化,2009(4):20-21.
[8]雷昌毅,陈建能,李鹏鹏.非圆齿轮—曲柄滑块压捆机构反求设计[J].农业工程学报,2012(13):22-27.
[9]李旭英.草物料压缩流变动力学特性研究及压缩过程优化[D].呼和浩特:内蒙古农业大学,2006.
[10]周国栋,杜健民,佘文龙,等.牧草压缩过程应力松弛试验研究及压缩活塞的力学分析[J].农机化研究,2017,39(4):197-201.
[11]姚海蓉.平面凸轮设计及运动仿真系统的研究[D].北京:中国农业大学,2004.
[12]石永刚,吴央芳.凸轮机构设计与应用创新[M].北京:机械工业出版社,2007.
[2]陈艳.中国草地类型分布的地理条件特点及其存在的问题和开发的潜力[J].西昌学院学报:社会科学版,1996(2):70-72.
[3]张博.高密度饲草压捆机设计[D].太谷:山西农业大学,2013.
[4]邵志强.约翰迪尔牧草机械[J].现代化农业,2003(11):36.
[5]克拉斯QUADRANT 5200/4200系列打捆机[J].河北农机,2017(4):69.
[6]杨明韶,李旭英,杨红蕾.牧草压缩过程的研究[J].农业工程学报,1996(1):60-64.
[7]孟庆福,黄明智,韩国军.方草捆压捆机压缩装置的研究与分析[J].农村牧区机械化,2009(4):20-21.
[8]雷昌毅,陈建能,李鹏鹏.非圆齿轮—曲柄滑块压捆机构反求设计[J].农业工程学报,2012(13):22-27.
[9]李旭英.草物料压缩流变动力学特性研究及压缩过程优化[D].呼和浩特:内蒙古农业大学,2006.
[10]周国栋,杜健民,佘文龙,等.牧草压缩过程应力松弛试验研究及压缩活塞的力学分析[J].农机化研究,2017,39(4):197-201.
[11]姚海蓉.平面凸轮设计及运动仿真系统的研究[D].北京:中国农业大学,2004.
[12]石永刚,吴央芳.凸轮机构设计与应用创新[M].北京:机械工业出版社,2007.