关键词：绿色与环保 黑板 健康 机械设计
Abstract
Blackboard as an essential component of school teaching is an important tool for schools currently. But the dust is seen distinctly when the traditional blackboard is wrote and wiped, so the environment of teaching is polluted seriously. With social progress and Accelerating of the school’s pace, the rate of teachers occupational diseases are rising year by year, and occupational diseases develop in the direction of diversification, One of pneumoconiosis and a variety of acute and chronic respiratory diseases caused by dust in China currently is one of the most important, the most serious harm and the most extensive. The myopia rate of students has increased year after year, and has reached to a very serious level. This is the issue in which the researching of the dust-free and automatic blackboard’s function lie
Developing a blackboard with dust-free is the problem which the teaching profession has failed to properly resolve on over the years. Teachers are engineers of human souls, and also is human noble career, Students are the future of our motherland, The Government and social are concerned about their physical and mental health, the concept of environmental protection has become popular increasingly.
In this huge industry behind education how to eliminate the dust pollution of classroom completely and how to protect health of the teachers and students’ health have also become a problem, which the government and society are concern. The previous blackboard exists many different disadvantages, Such as high cost, Low life, or inefficient and difficulty of maintenance. Therefore, it is very important and long-tem significant that to develop a new machine, which can solve the classroom dust pollution. The research of the task has great significance in improving the teaching environment and the health of students and teachers. But it has a vast market and application prospects.
This text introduced the new dust-free and automatic blackboard’s design thinking and process. The new equipment in this subject should have the following main characteristics:
Small size, simple and compact structure, low noise.
Having its own cleansing and collection device, to achieve the objective of the green and environmental protection
For writing, wipe cleanly, and improving the efficiency of cleansing.
According to the above function requirements, the author turns to relevant references, compares and analyses the differences of the existing researches about blackboard. Based on the comparison, the researcher determines the design program of this new equipment and does the relevant structural design.
The thesis interprets this new equipment’s innovations by analyzing the present situation, doing the program design and the structural design and designing components and the relevant calculation.
Keywords：Green and environmental protection；blackboard；health；mechanical design
