文档介绍：毕业设计(论文)
题目自动黑板擦的设计
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摘要
教室黑板凌乱给教师和学生带来了诸多不便,灰尘漫天给学生健康和教室干净的形象带来影响。个人的身体健康在一定程度上取决于你所呼吸的空气的洁净程度。粉笔教具是目前教学的必备工具,用它来传授知识,是最原始和最传统的主要教学方法之一,粉笔其应用到现在已有几千年的历史,对人类的教育事业做出了不可磨灭的贡献,随着历史的进步和社会的发展,人类对粉笔教具的认识不断提高,即粉笔给人类教育事业带来进步和做出巨大贡献的同时,也给从事教育事业的教师及学生带来巨大的危害。
根据全国部分城市调研资料显示,随着社会进步和社会节奏的加快,教师职业病率呈逐年上升的趋势,职业病呈现多样化方向发展,其中粉尘引起的尘肺以及各种急慢性呼吸道疾病是中国目前职业病中最主要,危害最严重和最广泛的一种。学生近视患病率亦逐年上升,到了异常严重的程度。
本文的设计思路电机通过采用自动送料螺杆的原则驱动,同时对设计方案进行了包括其机构组成和某些重要结构在内的具体设计。该机构介绍派生关系橡皮擦运动形式和结构参数的工作原理。
该分析机构对研究黑板擦的运动规律具有重要意义。该黑板擦由外壳、减速器、齿轮、轴、轴承、毛毡等组成,黑板擦边缘采用密封装置,外接吸尘管。本文所设计的黑板擦具有收尘效率高,结构简单,清灰方便,成本低,可靠性高等特点。
关键词:黑板擦、粉尘、电动机
ABSTRACT
Messy classroom blackboard for teachers and students a lot of inconvenience , dust filled the health impact to students and classrooms clean image. Personal health depends to some extent on the cleanliness of the air you breathe . Chalk is an essential tool currently teaching aids , and use it to impart knowledge , is one of the most original and most traditional main teaching method applied to chalk it now has thousands of years of history, mankind has made education indelible contribution , along with the historical development and social progress , human understanding of the continuous improvement of teaching aids chalk , chalk that brings education to human progress and at the same time make a significant contribution , but also to engage in education of teachers and students bring great harm.
According to the National Survey data show that part of the city , along with social progress and social rhythm accelerated rate of occupational teachers showed an increasing trend in the direction of occupational diversified development, including pneumoconiosis and a variety of acute and chronic respiratory diseases caused by dust is China's occupational most important , the most serious and widespread harm one . Students prevalence of myopia has increased year by year , to the unusually severe degree.
In this paper, the desi