葫芦科植物嫁接机平台、苗木输送系统的设计.doc

摘要 目前在蔬菜种植中，由于营养钵育苗在移栽时对幼苗无损伤，所以有取代传统穴盘育苗的趋势。为了满足营养钵育苗日益普遍的现状，研制新型嫁接机成为现在的一个热门课题。本次设计的自动嫁接机针对的是采用营养钵育苗的葫芦科植物，实现了砧木苗在营养钵内无需拔苗即可直接的操作，有助于嫁接以后苗的恢复，在生产中具有较高的使用价值。 本次毕业设计是葫芦科植物自动嫁接机的苗木传输系统及平台。通过分析原有各种嫁接机，我们决定选取传感器配合带式运输机作为苗木传输系统。首先对嫁接机及其苗木传输系统和胶带输送机作了简单的概述；接着分析了带式输送机的选型原则及计算方法；然后根据这些设计准则与计算选型方法按照给定参数要求进行选型设计；接着对所选择的输送机各主要零部件进行了校核。普通型带式输送机由六个主要部件组成：传动装置，机尾和导回装置，中部机架，拉紧装置以及胶带。简单的说明了输送机的安装与维护。最后说明了传感器的选择，平台的设计。 关键词：嫁接机；苗木传输系统；平台；带式输送机；选型设计；主要部件 Abstract Because the bowl seeding has no harm to the stock when transplanted, therefore it is used widely and tends to replace the hole seeding. In order to apply to the current increasing numbers for nutritional bowl seeding of vegetables, the development of new Grafting automatic machine now become a hot topic. The Grafting automatic machine is the cucurbitaceous vegetables which seedling in nutritional bowl.. It solves a difficult problem in vegetables’ grafting., therefore, has high value for use in vegetable production. The graduation project is the transmission system of grafting automatic machine and platform design. After all of the original graft machine, we decided to select the sensor with a belt conveyor as seedlings transmission system. At first, it is introduction about the grafting automatic machine, seedlings transmission system and the belt conveyor. After that the belt conveyor abase on the principle is designed. Then, it is checking computations about main component parts. The ordinary belt conveyor consists of six main parts: Drive Unit, Jib or Delivery End, Tail Ender Return End, Intermediate Structure, Loop Take-Up and Belt. At last, it is explanation about fix and safeguard of the belt conveyor. Keyword: Grafting automatic machine, seedlings transmission system , belt conveyor; Lectotype Design, main parts目录 摘要 I Abstract II 目录 III 第一章 引言 1 1.1 课题目的意义 1 1.2 葫芦科嫁接机的发展现状 1 1.3 苗木传输系统的研究现状 3 1.4 带式输送机的概述 3 1.4.1 带式输送机的应用 3 1.4.2 带式输送机的分类 4 1.4.3 各式输送机的特点 4 1.4.4 带式运输机的发展现状 5 1.4.5 带式运输机的工作原理 6 1.4.6 带式运输机的机构和布置形