城市绿地割草机设计-小型手推式含11张CAD图+说明书

A总装图

城市绿地割草机设计

摘要
本课题设计了一种由小型汽油机带动刀片旋转运动，人工推动机具前进完成作业的割草机。
设计的割草机组成部分主要有：旋刀，集草袋，传动机构，发动机和机壳支撑座等。拟采用发动机XY168F，这款发动机的最大功率为：5.5HP/3600rpm。
工作装置则是运用割草刀装在发动机输出轴上，通过高速旋转切割草茎。将割草刀的非刃口做成风机叶片，割草作业时将草吹成直立状态，便于切割并与罩壳形成涡流将碎草送入集草装置--集草袋。护罩为涡流形状的草坪修剪机的支架也是冲压件，用于保护操作者和行人安全，并给切下物导向。
行走装置则是由割草机调高装置和行走轮组成。通过手柄另行走轮相对割草机的护罩进行调节，轮子降低时，割草刀下降，则割草高度上升；反之亦然。

关键词：割草机；刀具；罩壳；传动轴

Design of lawn mower in urban green space

Abstract
This paper designs a kind of lawn mowerwhich is driven by a small gasoline engine to drive the blade.
The design of the lawn mower components mainly include: rotary knife, collecting straw bag, transmission mechanism, engine and chassis support. The engine XY168F is to be used, the maximum power of this engine is: 5.5HP/3600rpm.
Theworking device USES a mowing knife to be mounted on the engine's output shaft, cutting the stalk through high speed. The blade of the blade is made into a fan blade, and the grass is blown into an upright positionwhen mowing the grass,which is convenient for cutting and forming avortexwith the cover shell to send the grass into the collecting plant-- collecting straw bag. The bracket for the eddy-shaped lawn trimmer is also a stamping part to protect the operator and pedestrian safety and to guide the cutting.
Thewalking device is composed of a lawn mower and awalkingwheel. When thewheel is reduced, the cutting blade is lowered, and the grass height is increased. Andviceversa.

Keywords: grass cutter；reamer；transmission shaft；mantle；design of structure
protection

目录

摘要III
Abstract IV
1绪论1
1.1割草机研究背景1
1.2我国割草机的发展2
1.3手推式割草机的使用4
2总体方案设计5
2.1割草机的分类5
2.2割草机的基本要求5
2.3总体设计6
3结构设计计算8
3.1发动机的选择8
3.2旋刀设计8
3.3外壳设计11
3.4传动轴结构设计计算11
3.5离合器的设计14
3.6调高装置设计14
3.7车轮及把手选择15
3.8消音减噪设计15
4结论16
参考文献17

传动轴

刀柄

刀片

后轮轴焊合件

离心离合器

前轮轴焊合件

上端盖

设计所包含文件

手把

下端盖

箱体图

说明书前三页

字数统计