摘 要
茶树在我过种植地域广泛，面积广，手工对成龄茶树的深修剪和衰老茶树的重修剪，效率低，不经济。本次设计的是手推式茶树修剪机，避免了背负式和手提式的负荷作业。整个设计经历了茶树修剪机总体、传动系统和机架等的设计过程。首先进行茶树修剪机的总体结构设计，包括设计步骤、设计构思和拟定传动方案；其次进入到零部件的选型和设计，依次包括汽油机的型号选择、普通V带传动系统的设计、刀片的设计、轴的设计校核以及机架的设计。其中，设计的弧形刀刃能锁紧茶树枝干，增加了切口的平整度，将对茶树的伤害降到最低；最后阶段进行了零件图和装配图的绘制工作。
本课题即针对成龄茶树的深修剪、衰老茶树的重修剪，研究出一种新的茶树重修剪机械设备，并对整机各结构部件进行协调，对修剪机所用刀片的材料、结构进行分析，研制配套的传动系统，相应的带轮，轴，机架，并进行计算和装配图的绘制。
关键词：茶树修剪机；传动系统；弧形刀片；重修剪；带轮；轴
Abstract
Tea trees in my past planting area is wide, wide area, manual deep pruning of adult tea tree and aging tea tree heavy pruning, low efficiency, not economical.This design is a hand-push tea tree pruning machine, to avoid the negative and portable load operation.The whole design went through the design process of tea tree pruning machine overall, drivetrain system and rack.First, the overall structural design of tea tree trimmer, including design steps, design conception and design scheme; then, enter the component selection and design, including model selection of gasoline machine, design of ordinary V belt transmission system, blade design, shaft design and frame design.Among them, the designed curved blade can lock the tea tree branches, increase the flatness of the incision, and minimize the damage to the tea tree; the final stage of the part drawing and assembly drawing drawing work.
This topic is for the aging tea tree deep pruning, aging tea tree pruning, study a new tea tree pruning machinery equipment, and coordinate the structural components, the blade used in the material, structure analysis, develop supporting transmission system, corresponding pulley, shaft, frame, and calculation and assembly drawing.
Key words: tea tree trim machine; drivetrain; arc blade; heavy trim; pulley; shaft
目 录
摘 要 I
Abstract II
第一章 绪论 1
1.1选题背景及意义 1
1.2国内外同类研究概况 1
1.2茶树修剪机应用研究 1
1.2.1幼龄茶树的定形修剪 2
1.2.2成龄茶树的轻修剪与深修剪 2
1.2.3茶树常用的修剪方法 3
第二章 茶树修剪机设计方案 6
2.1主要原理 6
2.2主要技术指标 6
2.3主要经济指标 6
2.4传动路线的拟定 6
2.5设计步骤 7
2.6传动路线的拟定 7
2.6.1方案1 7
2.6.2方案2 7
第三章 零部件的选择和设计 9
3.1汽油机的选择 9
3.2普通V带传动系统的设计 10
3.2.1 Ⅰ带的设计 10
3.2.2 Ⅱ带设计 12
3.2.3轴Ⅰ的设计 15
3.2.4 Ⅱ轴的设计 18
3.2.5 III 轴的设计 21
总 结 26
参考文献 27
致 谢 28
