Mechanical principle demonstration teaching tool of opening and closing type

Abstract

The invention discloses a mechanical principle demonstration teaching tool of an opening and closing type, and the teaching tool is characterized in that the teaching tool comprises a rack, an openingand closing mechanism, and an opening and closing drive mechanism; the opening and closing mechanism is disposed at the upper end of the rack, and the opening and closing drive mechanism comprises apush rod, a slider-crank mechanism, a crank and rocker mechanism, and a rotating drive device; the rotating drive device is fixed on the rack, and is connected with the slider-crank mechanism, and therack is fixedly provided with a vertical chute; the slider-crank mechanism and the crank and rocker mechanism slidingly cooperate with the chute, and the slider-crank mechanism drives the crank and rocker mechanism to move; the crank and rocker mechanism is connected with the push rod; the opening and closing mechanism comprises a top seat and a plurality of four-connecting-rod mechanisms which have the same structure and are arranged in a peripheral direction; the top seat is fixedly connected with the upper end of the push rod; the four-connecting-rod mechanisms are hinged to the upper endof the rack and the top seat. The teaching tool is advantageous in that the teaching tool can enable the students to visually and specifically know the movement locus and principle of each mechanism,and enables the students to master the knowledge of the mechanical principles in a better way; moreover, the teaching tool is small and exquisite in structure, and is portable.

Description

technical field [0001] The invention relates to demonstration teaching aids for classroom or experimental teaching, in particular to an open-close mechanical principle demonstration teaching aid. Background technique [0002] Mechanical principles are the core courses of mechanical majors. At present, the teaching of mechanical principles is mostly principle concepts and calculations, and there are very few examples in the classroom. This leads to a disconnect between theory and practice for contemporary college students, and they cannot apply the knowledge they have learned to Go for practice. In order to make the course teaching of mechanical principles more effective and enable students to fully understand the boring and empty theoretical knowledge, the use of teaching aids is particularly important. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide an open-close mechanical principle demonstration teaching aid ...

AI Technical Summary

Problems solved by technology

[0002] Mechanical principles are the core courses of mechanical majors. At present, the teaching of mechanical principles is mostly principle concepts and calculations, and there are very few examples in the classroom. This leads to a disconnect between theory and practice for contemporary college students, and they cannot apply the knowledge they have learned to go in practice

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