滾筒播種技術(shù)已經(jīng)在國內(nèi)外廣泛應(yīng)用,特別是在大豆、玉米、花生等大粒徑的種子排種器中。在大粒徑種子播種作業(yè)中這項技術(shù)已經(jīng)較為成熟,但是滾筒播種技術(shù)在小粒徑的油菜種子播種中的應(yīng)用還有待研究。排種滾筒是排種器關(guān)鍵部件。其工作過程分為四個階段:充種過程、清種過程、攜種過程和投種過程。本文的研究對象是對油菜的滾筒式排種器,研究目標(biāo)為良好的播種均勻性能,較低的種子損傷率,更強的適應(yīng)性,克服傷種和漏種等問題。設(shè)計了一種適用于油菜播種的滾筒式排種器,并進(jìn)行臺架和田間試驗。實驗結(jié)果表明,該排種器能夠有效的解決傳統(tǒng)排種滾筒存在的種子損傷和型孔堵塞問題。使用三維設(shè)計軟件設(shè)計6行滾筒排種器,同時使用仿真軟件對所設(shè)計的6行滾筒排種器進(jìn)行仿真分析。可以根據(jù)實際需要對6行進(jìn)行擴(kuò)展。通過臺架試驗驗證該6行滾筒排種器的速度適應(yīng)性。該研究提供了一種新的高效的油菜排種器,研究內(nèi)容如下:（1）系統(tǒng)的分析了不同國家的油菜排種器現(xiàn)狀和發(fā)展情況。在此基礎(chǔ)上確定了滾筒排種器的形式。依據(jù)工作環(huán)境、農(nóng)藝要求和仿真分析的結(jié)果設(shè)計了滾筒排種器關(guān)鍵部件和基本參數(shù):滾筒直徑、清種材料、支架和總體方案等。（2）對油菜進(jìn)行物理和力學(xué)特性分析。研究了油... 

【文章頁數(shù)】：62 頁

【學(xué)位級別】：碩士

【文章目錄】：
摘要
Abstract
1. Introduction
2. Literature review
    2.1. History of cylinder hill seeding
    2.2. Domestic research status of rape seeding apparatus
    2.3. Current Situation of foreign metering seeding apparatus
    2.4. Seeding classification and working principle
    2.5. The basic ideas and methods
    2.6. ANSYS and Application EDEM seeding apparatus research
    2.7. The purpose and significance of research
    2.8. Research objective
    2.9. Research content
    2.10. Technical route
3. Materials and method
    3.1. Materials
        3.1.1 The new 2BFQ-6 combined planter
        3.1.2. Physical characteristics of rapeseed
        3.1.3. Following a brief overview of the seed of important physical and mechanical parameters ofthe test procedures and methods
    3.2. The seed moisture content determination
        3.2.1. The seeds of the bulk density are measured
        3.2.2. Determination of angle repose
        3.2.3. Designed and structure
        3.2.4. Metering cylinder parameter
    3.3. Rows cylinder structure parameters on the performance index of test and analysis this kind of dishtype hole
        3.3.1. Cylinder seeding speed
    3.4. Design components
        3.4.1. Cleaning device
        3.4.2. Type of thin steel wire
    3.5. Seeding working principle and working process
        3.5.1. Working principle
        3.5.2. Seed dropping device
        3.5.3. Key component parameter design and performance influencing factors
    3.6. Type of mechanics analysis
        3.6.1. Filling process of mechanic analysis
        3.6.2. Seeding cylinder analysis
        3.6.3. Track type hole diameter
        3.6.4. Push kinds of wire diameter and groove width push species
        3.6.5. Seed motion analysis
        3.6.6. Seed mechanics and kinematics mathematical model
    3.7. Summary of this chapter
4. Result and Discussion
    4.1. Seed damage and test
    4.2. Seeding damage rate test design
        4.2.1. Test material
        4.2.2. Test and method
    4.3. Damage rate performance test
        4.3.1. Push thin wire angle influence on broken rate
        4.3.2. Single experiment test
        4.3.3. Single factor experiment results and analysis
        4.3.4. Type of rapeseed performance
    4.4. Seed uniformity test
        4.4.1. Improvement measures
        4.4.2. Seeding device structure improvement
        4.4.3. Seeding cylinder structure improvement
        4.4.4. Shape of the groove hole and thin wire of structural improvement
    4.5. Field experiments of cylinder hill seeding device
    4.6. Summary
5. Cylinder hill seeding rapeseed planter
6. Conclusions and Recommendation
    6.1. Conclusion
    6.2. Recommendation
7. Acknowledgement
8. Reference
9. Appendix


【參考文獻(xiàn)】：
期刊論文
[1]氣力式油菜精量排種器試驗[J]. 廖慶喜,李繼波,覃國良.  農(nóng)業(yè)機械學(xué)報. 2009(08)
[2]磁吸滾筒式精密排種器設(shè)計與試驗[J]. 胡建平,鄭賽男,劉文東.  農(nóng)業(yè)機械學(xué)報. 2009(03)



本文編號：3670517