方草捆压捆机打结器空间参数研究  

Spatial Parameters of Knotters of Square Balers

作　　者：李慧[1] 何进[1] 李洪文[1] 王庆杰[1] 曹庆春 卢伟杰 

机构地区：[1]中国农业大学现代农业装备优化设计北京市重点实验室 [2]河南豪丰机械制造有限公司

出　　处：《农业机械学报》2013年第8期99-105,共7页Transactions of the Chinese Society for Agricultural Machinery

基　　金：'十二五'国家科技支撑计划资助项目(2011BAD20B08);中央高校基本科研业务费专项资金资助项目(2012YJ091);公益性行业(农业)科研专项资助项目(200903009);北京市自然科学基金资助项目(6112015)

摘　　要：以D型打结器为对象,在打结器时序研究的基础上对打结器空间结构布局进行了研究。通过打结器工作原理分析,确定了保证D型打结器成结八大动作顺利实现的各关键空间结构参数关系,建立了打结器参数化模型。以mathematica 8.0为工具对空间关键轴参数进行设计,最终确定了具有不同空间参数的机架Ⅰ和机架Ⅱ。两机架配合New Holland其他零件后进行了打结试验。结果表明,在室内,机架Ⅰ的成结率比机架Ⅱ低1.0%,但相同预紧力下,其所成绳结平均可承受拉力比机架Ⅱ所成绳结提高了13.9%;在田间,机架Ⅰ成结率比机架Ⅱ低4.0%,但其所成绳结可承受拉力比机架Ⅱ高2.5%。田间所成绳结的平均可承受拉力比室内成结高94.2%～115.9%,表明预紧力及成结过程外界对捆绳的附加拉力会影响最终绳结可承受拉力。Spatial structure of the D-type knotter was studied based on its working sequence.Key spatial parameter relationships were confirmed to ensure the eight knotting processes going well through analyzing the knotter working principle,and the parameter model of knotter was build.Key spatial axes parameters were also designed by using mathematica 8.0 software,and two knotter frames were finally determined with different spatial parameters.The knotting experiments were carried out by using the two different knotter frames which were both assembled with the homogeneous New Holland parts,the results showed that,in the indoor experiment,the knotting rate of knotter frame Ⅰ（KFI） was 1.0% lower than knotter frame Ⅱ（KFII）,while the average breaking force of the knot formed by the KFI was 13.9% higher than KFII at the same preload.In the field experiment,the knotting rate of KFI was decreased 4.0% in compared with KFII while its average breaking force was 2.5% higher than KFII.The average breaking force of the knot formed in the field was 94.2% ～ 115.9% higher than indoor due to the different preloads and the additional extend force of the compressed straw baler.

关 键 词：方草捆压捆机 打结器 空间参数 工作时序 成结率 

分 类 号：S817.115[农业科学—畜牧学] TH113.22[农业科学—畜牧兽医]