Teaching device for teaching recent mining history

Abstract

The invention discloses a teaching device for modern mining history teaching and relates to the technical field of modern history explanation teaching. The teaching device comprises a base, wherein aplurality of supporting columns are fixedly connected to the side wall of the upper end of the base, a mounting frame is fixedly connected to the upper ends of the supporting columns jointly, and a blackboard body is mounted in the mounting frame; a mounting groove is formed in the side wall of the mounting frame, a threaded rod is rotatably connected into the mounting groove, a servo motor is mounted in the mounting frame, the tail end of an output shaft of the servo motor is fixedly connected with the threaded rod, and a threaded sleeve is in threaded connection with the outer side wall of the servo motor, through the friction between the rubber rod and silk during the rotation process, the rubber rod has a certain gravitational effect, so the absorption work of dust drifting in the airis realized, and the influence of dust drifting on workers and students is avoided; and through the filtering mechanism, dust filtering work is achieved, and subsequent cleaning work is facilitated.

Description

Technical field [0001] The present invention relates to the field of decision teaching in modern contemporary, in particular, involving a teaching device with modern mining history. Background technique [0002] The development of mineral resources has had a huge role in promoting the progress of human social civilization. It is an important source of promoting social and economic development. It has made great contributions to the soaring of China's economy. Before thousands of years ago, the ancestors of the Chinese nation have been known. The development and utilization of mineral resources is started in the process of natural and transformation, and it is in the longer period of time in the longer period, laid the foundation for the development of China's modern mining. The closed-door chain of the feudal dynasty, causing China Mining The development is in a very backward state, and the invasion of Western powers has made modern China in patients and outsourced. The developme...

AI Technical Summary

Problems solved by technology

[0003] However, in the process of assisting the explanation, it is necessary to use traditional teaching tools such as chalk and blackboard to assist the explanation. In the process of wiping the blackboard, a large amount of dust is easily generated, and the diffuse dust is more serious to the teacher. It is easy to cause extremely bad situations such as pneumoconiosis. Although with the continuous development of society, there are many electronic display screens for assistance, but some instructors' key points and content that need to be handwritten are not fully reflected. A teaching device for teaching the history of modern mining to solve the problems raised above

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