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方草捆壓捆機打結(jié)器空間參數(shù)研究
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“十二五”國家科技支撐計劃資助項目(2011BAD20B08)、中央高校基本科研業(yè)務費專項資金資助項目（2012YJ091）、公益性行業(yè)（農(nóng)業(yè)）科研專項資助項目（200903009）和北京市自然科學基金資助項目（6112015）


Spatial Parameters of Knotters of Square Balers
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    摘要:

    以D型打結(jié)器為對象，在打結(jié)器時序研究的基礎上對打結(jié)器空間結(jié)構(gòu)布局進行了研究。通過打結(jié)器工作原理分析，確定了保證D型打結(jié)器成結(jié)八大動作順利實現(xiàn)的各關鍵空間結(jié)構(gòu)參數(shù)關系，建立了打結(jié)器參數(shù)化模型。以mathematica 8.0為工具對空間關鍵軸參數(shù)進行設計，最終確定了具有不同空間參數(shù)的機架Ⅰ和機架Ⅱ。兩機架配合New Holland其他零件后進行了打結(jié)試驗。結(jié)果表明，在室內(nèi)，機架Ⅰ的成結(jié)率比機架Ⅱ低1.0%，但相同預緊力下，其所成繩結(jié)平均可承受拉力比機架Ⅱ所成繩結(jié)提高了13.9%；在田間，機架Ⅰ成結(jié)率比機架Ⅱ低4.0%，但其所成繩結(jié)可承受拉力比機架Ⅱ高2.5%。田間所成繩結(jié)的平均可承受拉力比室內(nèi)成結(jié)高94.2%~115.9%，表明預緊力及成結(jié)過程外界對捆繩的附加拉力會影響最終繩結(jié)可承受拉力。

    Abstract:

    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. 

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李慧,何進,李洪文,王慶杰,曹慶春,盧偉杰.方草捆壓捆機打結(jié)器空間參數(shù)研究[J].農(nóng)業(yè)機械學報,2013,44(8):99-105. Li Hui, He Jin, Li Hongwen, Wang Qingjie, Cao Qingchun, Lu Weijie. Spatial Parameters of Knotters of Square Balers[J]. Transactions of the Chinese Society for Agricultural Machinery,2013,44(8):99-105.

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  • 在線發(fā)布日期: 2013-07-19
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