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液態(tài)施肥機分配機構空間凸輪設計與試驗
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國家自然科學基金資助項目（51205056）和“十二五”國家科技支撐計劃資助項目(2013BAD08B04)


Design and Test of Spatial Cam for Liquid Fertilizer Assigned Machinery
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    摘要:

    為滿足液態(tài)施肥機轉(zhuǎn)子式轉(zhuǎn)換器空間凸輪機構運轉(zhuǎn)平穩(wěn)、防止液肥泄漏與施肥量精準的性能要求,，建立了空間凸輪數(shù)學模型,。應用Visual Basic 6.0開發(fā)空間凸輪優(yōu)化軟件，得到凸輪的平均圓柱半徑為37mm以及輪廓曲線圖,，應用Pro/E軟件對空間凸輪機構進行三維建模與運動學仿真,，驗證了該空間凸輪機構設計的合理性。進行試驗臺試驗,，當液壓泵壓力0.4MPa,、輸出軸轉(zhuǎn)速69.75r/min時，所測施肥量基本相同,，且噴肥針只在空間凸輪的推程到回程階段噴肥,。結果表明：空間凸輪機構運轉(zhuǎn)平穩(wěn)，符合設計要求,。

    Abstract:

    In order to satisfy the performance requirements of spatial cam mechanism in rotary converter of liquid fertilizer applicator, such as stable working and precise liquid fertilization, a mathematical model of spatial cam was established. The software for optimizing the spatial cam was developed by using Visual Basic 6.0. The average radius of cylinder was got as 37mm and curve profile of spatial cam was obtained. Threedimensional model and kinematics simulation of spatial cam mechanism were established by using Pro/E software, which verified the design reasonability of spatial cam mechanism. Finally, the mechanism was tested on the testbed. The result showed that when the pump pressure is 0.4MPa and the output shaft speed is 69.75r/min, the fertilizer consumptions are almost the same at different measurement time, and the picking hole mechanism only sprays liquid fertilizer on the rise to fall travel process of converters spatial cam. The results show that the proposed spatial cam mechanism could work smoothly that meets the design requirements of spatial cam. 

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周文琪,王金武,潘振偉,唐 漢,王 奇,多天宇.液態(tài)施肥機分配機構空間凸輪設計與試驗[J].農(nóng)業(yè)機械學報,2015,46(11):64-69. Zhou Wenqi, Wang Jinwu, Pan Zhenwei, Tang Han, Wang Qi, Duo Tianyu. Design and Test of Spatial Cam for Liquid Fertilizer Assigned Machinery[J]. Transactions of the Chinese Society for Agricultural Machinery,2015,46(11):64-69.

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  • 收稿日期:2015-01-20
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  • 在線發(fā)布日期: 2015-11-10
  • 出版日期: 2015-11-10
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