Writing cloth for teaching

Abstract

The invention discloses writing cloth for teaching. A roll of black wear-resistant inelastic waterproof cloth is arranged on a main shaft above an iron stand; the writing cloth is discharged from two press shafts and is wound around a secondary shaft below the iron stand under the drive of a motor, a speed reducer, a main shaft gear, an indirect gear, a press shaft gear and a chain, and is wound on a rotating shaft which is higher than the secondary shaft by the secondary shaft, so that the static writing cloth is in a tense state, and is tightly adhered to a wall plate of which the back is protruded; and a roller provided with furs is arranged on the side close to the secondary shaft, and is driven by another motor through the speed reducer, the rotating speed of the roller is several times that of the secondary shaft, a container which can accommodate water is arranged at the position of the roller of the secondary shaft, and when a roll of cloth is written, a reversal switch and a roller switch can be switched on, and a water inlet tap and a water outlet tap of the container are turned on simultaneously, so that the secondary shaft and the roller which are wound around the writing cloth are in water to facilitate cleaning a roller brush. For ensuring safety and beauty, the writing cloth is exposed out of the surface, and other parts are covered; and by the writing cloth, the defects of a writing plate are effectively overcome, and teaching efficiency is improved.

Description

Technical field [0001] The invention relates to a teaching writing cloth. Background technique [0002] At present, the teaching writing board generally adopts a fixed blackboard, which needs to be wiped frequently while writing with chalk, which is time-consuming and laborious, and the dust is easily absorbed by people. Contents of the invention [0003] In order to overcome the shortcomings of the existing writing board, the invention provides a teaching writing cloth, which does not need to be wiped by people, and the writing is easier and smoother, and the teaching efficiency is improved. [0004] The technical scheme adopted by the present invention to solve its technical problems is: utilize a roll of black wear-resistant non-stretchable waterproof cloth to be installed on the main shaft above an iron frame, through the motor, reducer, main shaft gear, indirect gear, final shaft gear, chain Driven, the writing cloth is sent out from the two finale shafts and passed ...

AI Technical Summary

Problems solved by technology

[0002] At present, teaching writing boards generally use fixed blackboards, which need to be wiped frequently while writing with chalk, which is time-consuming and laborious, and dust is easily absorbed by people.

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