A0挖树机总装图
摘要
近年来,我国持续不断的发展农业机械化,加上有关工作人员对挖树机等一系列的农业机械装置的热衷不断。因此怎么设计效率高、实用,操作简单的挖树机是一个重要的发展点。本文设计的小型挖树机将参照国外大约翰型的树木移栽机的结构,针对国内现有的研究条件,对原移栽机进行尺寸上的改造。本文设计的小型挖树机可以悬挂在拖拉机或装载机后,与之配合使用,采用液压传动做传动系统。机械结构包括有铲刀、机架、导轨、提升架等。在液压传动部分,本文将根据设计要求,自行设计一套完整的液压系统。通过查阅资料,完成标准件的计算、选型和校核,并画出液压系统的原理图。在机械结构部分,本文将针对铲刀、机架、导轨做相关设计。
关键词:小型挖树机;液压传动;挖树装置;结构设计
Design of small tree excavators
Abstract
In recent years, China's continuous development of agricultural mechanization, coupled with the relevant staff of the tree digging machine and a series of agricultural machinery equipment enthusiasm. So how to design high efficiency, practical, simple operation of tree digging machine is an important point of development. The small tree digging machine designed in this paper will refer to the structure of foreign big John tree transplanter and transform the size of the original transplanter according to the existing domestic research conditions.In this paper, The small tree digger designed in this paper can be hung behind the tractor or loader, with the use of hydraulic transmission as the transmission system. The mechanical structure includes shovel knife, frame, guide rail, lifting frame and so on. In the hydraulic transmission part, this paper will design a complete hydraulic system according to the design requirements. Through access to information, complete the standard parts of the calculation, selection and check, and draw the hydraulic system schematic diagram. In the mechanical structure part, this paper will be for the shovel knife, frame, guide rail to do the relevant design.
Key Words: Small semi-automatic digging machine tree;Hydraulic transmission device ;Dig tree device
目录
1绪论1
1.1课题研究背景及意义1
1.1.1研究背景1
1.1.2研究意义2
1.2挖树机的国内外研究现状2
2机械结构设计4
2.1研究方案4
2.1.1方案设计4
2.1.2方案确定6
2.2挖树机总体结构与工作原理6
2.2.1挖树机的总体结构6
2.2.2挖树机的工作原理和过程7
2.3土球大小确定7
2.4挖树铲刀及导向机构设计8
2.4.1铲刀形式8
2.4.2铲刀下铲阻力计算说明10
2.4.3铲刀导向机构设计10
2.5底座及升降机构的设计12
2.5.1底座结构设计12
2.5.2开合油缸行程计算13
2.5.3升降装置设计.....................................................................................14
2.5.4升降油缸的行程计算14
3液压传动系统的设计15
3.1液压系统的组成15
3.2液压子系统设计15
3.2.1开合装置液压子系统15
3.2.2铲土装置液压子系统16
3.2.3升降装置液压子系统17
3.3液压系统执行元件的计算与选型18
3.3.1开合装置子系统18
3.3.2铲土装置液压子系统20
3.3.3升降液压子系统22
3.4液压系统辅助元件的选型25
3.4.1液压泵的选择25
3.4.2油箱设计26
3.4.3冷却器的设计26
3.4.4液压阀的选择26
3.4.5液压油的选择27
3.4.6油管的选择27
3.5液压系统压力的验算28
4结论与展望30
参考文献31
致谢32
升降连接架A1
字数
挖掘导向架A1
摘要
机器底座A1
液压系统图A3
目录
设计所包含文件
铲刀A2
铲刀导套A2
设计方案比较