Blackboard erasing device for education and teaching

A blackboard eraser and blackboard technology, which is applied to blackboard or slate cleaning devices, office supplies, printing, etc., can solve the problems of physical damage, time-consuming and labor-intensive, and chalk dust is easily inhaled by erasers, so as to save material costs and not easily inhalation effect

Inactive Publication Date: 2016-12-21
杨建锋
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the disadvantages of the present invention, which is time-consuming and labor-intensive when erasing and cleaning the blackboard, chalk dust is easily inhaled by the erasing personnel, and causes damage to the b

Method used

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  • Blackboard erasing device for education and teaching
  • Blackboard erasing device for education and teaching
  • Blackboard erasing device for education and teaching

Examples

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Embodiment 1

[0026] A blackboard erasing device for education and teaching, such as Figure 1-3 As shown, it includes a lifting frame 1, a first slider 2, a first slide rail 3, a first blackboard eraser 4, a rack 5, a disc 6, a first pole 7, a first connecting rod 8, a second pole Rod 9, second blackboard eraser 10, first swing seat 11, sector gear 12, second connecting rod 13, cylinder 14, second swing seat 15, electric push rod 16, second slide block 17, pull cord 18, electric Wheel 19, the second slide rail 20, the 3rd pole 23 and the 3rd blackboard eraser 24; The second slide rail 20 is installed on the wall 21, is provided with the second slide block 17 on the second slide rail 20, the second slide rail 20 front left and right sides are symmetrically equipped with electric wheel 19, is connected with stay cord 18 on the electric wheel 19, and stay cord 18 is connected with the second slide block 17, and the second slide block 17 bottom end is connected with electric push rod 16, elect...

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Abstract

The invention relates to a blackboard erasing device, in particular to a blackboard erasing device for education and teaching. The technical problem, which the invention needs to solve, is to provide a blackboard erasing device for education and teaching, which is time-saving and labor-saving, prevents chalk dust from being inhaled and avoids damage to a human body. In order to solve the technical problem, the invention provides the blackboard erasing device for education and teaching, which comprises a lifting frame, a first sliding block, a first sliding rail, a first blackboard eraser, a rack, a disk, a first supporting rod, a first connecting rod, a second supporting rod, a second blackboard eraser, a first swinging base, a sector gear, a second connecting rod, an air cylinder, a second swinging base, an electric push rod, a second sliding block, a pull rope, an electric wheel, a second sliding rail, a third supporting rod and a third blackboard eraser, wherein the second sliding rail is arranged on the wall; and the second sliding block is arranged on the second sliding rail. The invention has the effects that the blackboard erasing device for education and teaching is time-saving and labor-saving, prevents chalk dust from being inhaled and avoids damage to the human body.

Description

technical field [0001] The invention relates to a blackboard erasing device, in particular to a blackboard erasing device for education and teaching. Background technique [0002] Education is education and cultivation. It uses existing experience and knowledge to deduce people and explain various phenomena, problems or behaviors. It basically treats people with a relatively mature or rational thinking, so that things can be approached. Its most fundamental existence is that people in it slowly change from sensory touch to cognitive understanding of a thing, and form a relatively perfect or rational self-awareness thinking. But at the same time, people have self-conscious thinking and their own sensory dimension, so any educational conscious thinking may not be absolutely correct, but should understand the direction of their thinking perceptually, as long as they do not bias the inner nature of things . [0003] Education is also a kind of teaching of thinking, and people ...

Claims

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Application Information

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IPC IPC(8): B43L21/00B43L21/04
CPCB43L21/00B43L21/04
Inventor 杨建锋
Owner 杨建锋
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