Lifting and positioning device of switched blackboard

Abstract

The invention discloses a lifting and positioning device of a switched blackboard. The device comprises a blackboard body, support blocks symmetrically arranged on the left and right sides of the blackboard body, and lifting motors symmetrically and fixedly arranged in the top end wall of a wall left and right; lifting screw rods extending up and down are connected in the support blocks in a threaded fit mode; the top tail ends of the lifting screw rods are connected with the bottom tail ends of the lifting motors in a power fit mode; a sunk groove extending left and right is formed in the front side end surface of the blackboard body; a first blackboard is fixedly arranged in the extension section on the right side of the sunk groove; a second blackboard is connected into the sunk grooveon the left side of the first blackboard in a sliding fit mode; a third blackboard is fixedly arranged on the front side end surface of the extension section on the left side of the blackboard body; and the extension section on the left side of the second blackboard extends into the sunk groove on the back side of the third blackboard.

Description

technical field [0001] The invention relates to the technical field of blackboard equipment, in particular to a lifting and positioning device for a switch-type blackboard. Background technique [0002] Teaching is a human-specific talent cultivation activity composed of teachers' teaching and students' learning. Through such activities, teachers guide students to learn and master cultural and scientific knowledge and skills purposefully, in a planned and organized manner, and promote the improvement of students' quality, so that they can become the people needed by society. In the process of teaching, the teacher will write down the teaching content on the blackboard, so that the students can learn better, but the existing blackboard cannot freely adjust the height according to the teacher's teaching requirements, which is not humanized enough, and cannot make teachers with different heights more comfortable. It is convenient for teaching and has a single function. In addi...

AI Technical Summary

Problems solved by technology

In the process of teaching, the teacher will write down the teaching content on the blackboard, so that the students can learn better, but the existing blackboard cannot freely adjust the height according to the teacher's teaching requirements, which is not humanized enough, and cannot make teachers with different heights more comfortable. It is convenient for teaching and has a single function. In addition, although some existing blackboards integrate multimedia tools, they are difficult to move because of their fixed positions, and the multimedia display screens integrated on them cannot be moved, which cannot satisfy this kind of discussion teaching. demand, which brings great inconvenience to the normal teaching work of teachers

Images