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油菜钵苗移栽机开孔机构结构设计

摘  要：我国油菜大面积生产采用机械移栽是农时、农艺条件的必然选择，是社会发展的必然需求。但我国油菜移栽机械研究处于刚起步阶段，机械技术与配套农艺技术都缺乏成熟的模式。根据我国国情，油菜移栽机械应追求中小型、多功能复式作业，通过机具作业体现高效率.移栽机具能适应裸苗也能适应带土钵苗，提高机具对秧苗形式和作物种类的适应性。为降低机具造价，多行自动化应是今后油菜移栽机械的主要机型。本文主要对油菜钵苗移栽机开孔机构的动力选型，传动方案的设计，以达到所需要求。        
关键词：油菜；移栽机；开孔；传动；

The Design of Rape Seedlings Transplant Machine Hole Institutions Structure
S

Abstract : Large area of rape planting by machine is not only the farming, agronomic developing inevitable choice, but also the result of social development requirement. But the rape transplanting machine study in our country just at the beginning , mechanical technology and supporting agricultural technology are lack of mature mode. According to national conditions, rape transplanting machine product should pursue small and medium, multi-function as a goal，through machine work show high efficiency compare with handwork. Besides,transplanting machine should adapt to the soilless seedlings but also the taking-soil seedlings. In order to reduce the cost of the machine. The first choice of the rape transplanting machine scheme should be automatic line. In order to meet the requirements, in this paper, the main is put on the design of rack and the transmission project.
Keywords: rape; transplanting machine; hole; transmission;

目   录

摘要……………………………………………………………………………………1
关键词…………………………………………………………………………………1
1前言……………………………………………………………………………………2
    1.1选题的根据和意义…………………………………………………………………2
    1.2国内外研究情况……………………………………………………………………2
    2 总体方案的选用……………………………………………………………………3
    2.1选定拖拉机…………………………………………………………………………3
    2.2合理布置传动装置…………………………………………………………………5
    2.3合理分配传动比……………………………………………………………………5
    2.4 确定传动比………………………………………………………………………6
    3主要的传动参数的确定和计算………………………………………………………6
    3.1减速机的选择………………………………………………………………………6
    3.1.1确定齿轮箱………………………………………………………………………6
    3.1.2确定润滑方式……………………………………………………………………6
    3.1.3确定冷却方式……………………………………………………………………6
    3.1.4记录外形尺寸参数………………………………………………………………6
    3.2各轴的运动参数……………………………………………………………………7
    3.1.1各轴的转速………………………………………………………………………7
    3.1.2各轴的功率………………………………………………………………………7
    3.1.3各轴的转矩………………………………………………………………………7
    4关键零件的设计与结构说明…………………………………………………………………7
    4.1圆锥齿轮计算………………………………………………………………………7
    4.2直齿圆柱齿轮计算…………………………………………………………………9
    4.3链轮设计计算……………………………………………………………………10
    5轴的设计与校核………………………………………………………………………………12
    5.1输出轴的功率、转速和转矩……………………………………………………12
    5.2作用在齿轮上的力………………………………………………………………12
    5.3确定轴的最小直径………………………………………………………………12
    5.4轴的结构设计……………………………………………………………………12
    5.5 轴上的载荷………………………………………………………………………13
    5.5 校核轴的疲劳强度………………………………………………………………13
    6滚动轴承的选择与校核………………………………………………………………………16
    7设计弹簧………………………………………………………………………………………17
    8 其他部分……………………………………………………………………………19
    8.1去泥部分…………………………………………………………………………19
    8.2行走部分…………………………………………………………………………19
9 总结……………………………………………………………………………19
    参考文献………………………………………………………………………………20
    致谢……………………………………………………………………………………21