设计描述：

文档包括:
Word版说明书一份，28页，约12000字
任务书一份
开题报一份

CAD版本图纸，共25张

目    录

摘要……………………………………………………………………………………1
关键词…………………………………………………………………………………1
    1  前言…………………………………………………………………………………2
        1.1  研究背景……………………………………………………………………2
      1.2  国内外研究现状……………………………………………………………2
      1.3  苗池图………………………………………………………………………4
  2  设计任务……………………………………………………………………………4
      2.1  本文研究的内容……………………………………………………………4
      2.2  设计步骤……………………………………………………………………4
      2.3 方案确定……………………………………………………………………5
          2.3.1  行走方案的对比选择………………………………………………5
          2.3.2  升降方案的对比选择………………………………………………6
          2.3.3  机架方案的对比选择………………………………………………6
      2.4 整体机构介绍………………………………………………………………6
      2.5预期主要技术指标……………………………………………………………8
  3  剪叶机构的改装……………………………………………………………………8
  4  电机的选择………………………………………………………………………10
      4.1  中间行走驱动电机的选择………………………………………………10
      4.2  车轮行走驱动电机的选择………………………………………………10
      4.3  生产率的计算……………………………………………………………11
  5支撑机构的设计……………………………………………………………………11
      5.1  升降机构的设计…………………………………………………………11
      5.2  小车行走机构的设计……………………………………………………12
      5.3  横梁的选材与强度校核…………………………………………………13
      5.4  横梁的选材与强度校核…………………………………………………14
          5.4.1  摩擦性计算………………………………………………………14
          5.4.2  螺杆强度校核……………………………………………………15
          5.4.3  螺母螺纹牙的强度校核…………………………………………16
          5.4.3  螺杆的稳定性计算………………………………………………17
  6  行走转向系统的设计……………………………………………………………18
      6．1  转向机构的设计…………………………………………………………18
      6.2  行走机构的设计…………………………………………………………19
      6.3  轮轴的设计与校核………………………………………………………21
  7总结…………………………………………………………………………………23
  8结束语………………………………………………………………………………23
  参考文献………………………………………………………………………………24
  致谢……………………………………………………………………………………25

自走式烟苗剪叶机的设计

摘  要： 一种自走式烟苗剪叶设备，包括机架组件和剪叶小车；在温室烟苗池两边有一对水泥轨道，机架组件底部的车轮可以在上面行走；在机架上还有使剪叶设备整体跨间转移的机构组件；剪叶小车的剪叶机机头组件垂吊在机架横梁的下方，通过一驱动电机驱动，可以在横梁滚动行走。剪叶小车通过电机驱动，实现剪叶设备的无极调速。螺杆和螺母的滑动螺旋可以调控剪叶机头的剪叶高度，实现剪叶设备在育苗盘上方的前后、左右、上下方向剪叶作业；通过机架组件实现剪叶机跨间转移，实现剪叶机多功能作业。
关键词：漂浮育苗；烟苗；剪叶机；自走式

Design of Self-moving Tobacco Seedling Leaf-cutting Machine

Abstract: A self-propelled Tobacco seedlings cutting device, comprising a frame assembly and a leaf cutting trolley;  each cultivate greenhouse tobacco seedlings Medium pool’s both sides have a pair of cement rail, so that rack assembly bottom wheels can walk on it; and there is a mechanism component on the  frame which can make the whole span leaf cutting device transfer; leaf cutting trolley‘s leaf cutting machine head assembly are hanging under the Rack beams ，which drived by a driving motor so that can roll along the beam. Leaf cutting   trolley which is driven by the motor can make the cutting devices non level speed control, the screw and the nut’s Slide helix can Regulate leaf cutting head leaf‘s cutting height , so that the leaf cutting device which above the seedling traycan work from around, up and down; through the Rack components which can make leaf cutting machine span transfer and realize Achieve multiple functions.
Key words: floating seedling system; tobacco; leaf cutting machine; self-propelled