CN216331083U

CN216331083U - Calculation demonstration board for mathematical education with large writing area

Info

Publication number: CN216331083U
Application number: CN202120960799.4U
Authority: CN
Inventors: 王晓晗; 罗南勇
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-05-07
Filing date: 2021-05-07
Publication date: 2022-04-19
Anticipated expiration: 2031-05-07

Abstract

The utility model discloses a calculation demonstration board for mathematical education with a large writing area, which comprises a frame body, wherein fixed plates are fixedly arranged on the left side and the right side of the top end of the frame body, fixed holes are formed in the centers of the two fixed plates in a penetrating mode, rolling shafts are fixedly arranged in the left side and the right side of the frame body in the vertical direction, bearings are fixedly arranged at the upper ends and the lower ends of the two rolling shafts, the outer side ends of the four bearings are fixedly connected with the frame body, through grooves are formed in the centers of the inner sides of the left end and the right end of the frame body in a penetrating mode, a writing belt is wound between the two rolling shafts, and the length of the writing belt is larger than the distance between the two rolling shafts. Through setting up framework, fixed plate, fixed orifices, roller bearing, leading to the groove, writing the cooperation of area, gear and chain and using, it is limited to have solved current mathematical education with calculating demonstration board writing area, writes the back full and need wipe and write the part and just can continue to write, can't keep the preceding problem of writing the part.

Description

Calculation demonstration board for mathematical education with large writing area

Technical Field

The utility model belongs to the technical field of mathematics, and particularly relates to a calculation demonstration board with a large writing area for mathematical teaching.

Background

In mathematical education, often need the teacher to write more computational formula step on the demonstration board, because demonstration board area is limited, write the space limited, often can't satisfy and write whole step, need wipe the partial step that the storefront was written, the student can't observe the front end in follow-up study and write the part.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems in the prior art, the utility model provides a calculation demonstration board for mathematical education with a large writing area, wherein two rolling shafts are arranged to wind and connect a longer writing belt, so that after part of the writing belt is written, the rolling shafts can be rotated to expose a new writing belt for continuous writing, and in subsequent learning, the rolling shafts can be rotated to expose the front writing belt, so that students can find all writing parts of teachers in the subsequent learning.

The utility model is realized in such a way, comprising a frame body, wherein the left side and the right side of the top end of the frame body are both fixedly provided with a fixed plate, the centers of the two fixed plates are both provided with a fixed hole in a penetrating way, the inner parts of the left side and the right side of the frame body are fixedly provided with rolling shafts in the vertical direction, the upper ends and the lower ends of the two rolling shafts are fixedly provided with bearings, the outer side end parts of the four bearings are fixedly connected with the frame body, a through groove is arranged at the center of the inner sides of the left and right ends of the frame body in a penetrating way in the vertical direction, a writing belt is wound between the two rolling shafts, the length of the writing belt is larger than the distance between the two rolling shafts, two ends of the writing belt are respectively and fixedly connected with the inner side end parts of the two rolling shafts, two through grooves are respectively penetrated through two sides of the writing belt, gears are fixedly arranged at the positions, close to the bearings, of the lower ends of the two rolling shafts, and chains are connected between the gears in a driving mode.

Preferably, the lower end of the roller inside the right side of the frame body extends out of the lower end of the frame body, the end part of the lower end of the roller inside the right side of the frame body extending out of the frame body is fixedly provided with a turntable, and the outer side end part of the turntable is fixedly provided with a rotating handle.

Preferably, the rear end of the center of the frame body is fixedly provided with a limiting plate, and the front side surface of the limiting plate is abutted against the writing tape.

Compared with the prior art, the utility model has the following beneficial effects:

1. the utility model solves the problems that the prior calculation demonstration board for mathematical education has limited writing area, needs to wipe off the writing part after full writing and can continue writing and cannot keep the front writing part by arranging the frame body, the fixing plate, the fixing hole, the rolling shaft, the bearing, the through groove, the writing belt, the gear and the chain for matching use.

2. According to the utility model, by arranging the turntable and the rotating handle, after a teacher writes a part of the writing tape, the rotating handle is rotated to drive the turntable to rotate, so that the right roller is driven to rotate, the two rollers are driven to rotate simultaneously through the driving link of the gear and the chain, the writing tape is loosened by the roller on one side, the roller on the other side is tightened, the blank writing tape part is exposed, and the rotating handle is rotated reversely when the front-end writing tape part needs to be demonstrated, so that the front-end writing tape part can be exposed.

3. According to the utility model, the limiting plate is arranged, so that the limiting plate is abutted against the rear end of the writing belt, a teacher can write more smoothly, and the writing belt is prevented from shaking under stress during writing.

Drawings

FIG. 1 is a schematic diagram of an overall structure provided by an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of the overall structure provided by the embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view of an overall structure provided by an embodiment of the present invention;

FIG. 4 is an enlarged view at A of FIG. 2 according to an embodiment of the present invention;

in the figure: 1. a frame body; 2. a fixing plate; 3. a fixing hole; 4. a roller; 5. a bearing; 6. a through groove; 7. a writing tape; 8. a gear; 9. a chain; 10. a turntable; 11. rotating the handle; 12. and a limiting plate.

Detailed Description

In order to further understand the contents, features and effects of the present invention, the following embodiments are illustrated and described in detail with reference to the accompanying drawings.

The structure of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1 to 4, the calculation demonstration board for mathematical education with a large writing area provided by the embodiment of the present invention comprises a frame body 1, wherein fixing plates 2 are fixedly arranged on the left and right sides of the top end of the frame body 1, fixing holes 3 are respectively formed through the centers of the two fixing plates 2, rollers 4 are fixedly arranged in the vertical direction inside the left and right sides of the frame body 1, bearings 5 are fixedly arranged on the upper and lower ends of the two rollers 4, the outer ends of the four bearings 5 are fixedly connected with the frame body 1, through grooves 6 are respectively formed through the vertical direction in the centers of the left and right ends of the frame body 1, a writing tape 7 is wound between the two rollers 4, the length of the writing tape 7 is greater than the distance between the two rollers 4, the two ends of the writing tape 7 are respectively fixedly connected with the inner ends of the two rollers 4, the two sides of the writing tape 7 are respectively passed through the two through grooves 6, gears 8 are fixedly arranged at the positions of the lower ends of the two rollers 4 close to the bearings 5, a chain 9 is in driving connection between the two gears 8.

Referring to fig. 1, 2 and 4, the lower end of the roller 4 inside the right side of the frame 1 extends out of the lower end of the frame 1, the end of the lower end of the roller 4 inside the right side of the frame 1 extending out of the frame 1 is fixedly provided with a turntable 10, and the outer end of the turntable 10 is fixedly provided with a rotating handle 11.

Adopt above-mentioned scheme: through setting up carousel 10 and turning handle 11, can be so that the teacher write after full part writes area 7, turning handle 11 through rotating, it rotates to drive carousel 10, and then drive roller bearing 4 on right side and rotate, drive through gear 8 and chain 9 is linked, and then drive two roller bearings 4 and rotate simultaneously, one side roller bearing 4 relaxs and writes area 7, opposite side roller bearing 4 realizes tightening up, the realization exposes blank writing area 7 part, and then write when taking 7 parts in the front end at needs demonstration, reverse rotation turning handle 11, can make the writing area 7 of front end expose.

Referring to fig. 1, 2 and 3, a stopper plate 12 is fixed to the rear end of the center of the frame 1, and the front side surface of the stopper plate 12 abuts on the writing tape 7.

Adopt above-mentioned scheme: through setting up limiting plate 12, can be so that limiting plate 12 butt is writing taking 7 rear ends, can make the teacher more smooth when writing, avoid when writing, write and take 7 atresss to rock.

The working principle of the utility model is as follows:

when using, at first, can will demonstrate the convenient fixed of board through fixed plate 2 and fixed orifices 3, then in use, the teacher can realize writing in the writing area 7 upper end that exposes the part, expose the part and write the back full, can rotate turning handle 11, drive carousel 10 and rotate, and then drive the roller bearing 4 rotation on right side, drive through gear 8 and chain 9 is linked, and then drive two roller bearings 4 and rotate simultaneously, one side roller bearing 4 relaxs and writes area 7, the other side roller bearing 4 realizes tightening up, realize exposing blank writing area 7 part, and then when needing demonstration front end writing area 7 part, reverse rotation turning handle 11, can make the writing area 7 of front end expose, the student can observe all writing parts in follow-up study.

In summary, the following steps: this write great mathematical education of area with calculating demonstration board, through setting up framework 1, fixed plate 2, fixed orifices 3, roller bearing 4, bearing 5, lead to groove 6, write area 7, gear 8, chain 9, carousel 10, the cooperation of twist grip 11 and limiting plate 12 is used, it is limited with calculating demonstration board writing area to have solved current mathematical education, it can just continue to write to need to wipe off after full, can't keep the preceding problem of writing the part.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a write great mathematical education of area and use calculation demonstration board, includes framework (1), its characterized in that: the fixing plate comprises a frame body (1), fixing plates (2) are fixedly arranged on the left side and the right side of the top end of the frame body (1), fixing holes (3) are formed in the central positions of the two fixing plates (2) in a penetrating mode, rolling shafts (4) are fixedly arranged in the vertical directions in the left side and the right side of the frame body (1), bearings (5) are fixedly arranged at the upper end and the lower end of the two rolling shafts (4), the outer side end portions of the four bearings (5) are fixedly connected with the frame body (1), through grooves (6) are formed in the vertical directions in the central positions of the inner sides of the left end and the right end of the frame body (1) in a penetrating mode, a writing belt (7) is connected between the two rolling shafts (4) in a winding mode, the length of the writing belt (7) is larger than the distance between the two rolling shafts (4), the two ends of the writing belt (7) are fixedly connected with the inner side ends of the two rolling shafts (4) respectively, the two sides of the writing belt (7) are respectively penetrated through the two through grooves (6), the lower ends of the two rolling shafts (4) are respectively and fixedly provided with a gear (8) at the position close to the bearing (5), and a chain (9) is connected between the gears (8) in a driving manner.

2. The mathematical education demonstration board with the large writing area according to claim 1, wherein: the lower end of the roller (4) inside the right side of the frame body (1) extends out of the lower end of the frame body (1), a turntable (10) is fixedly arranged at the end part of the lower end of the roller (4) inside the right side of the frame body (1) extending out of the frame body (1), and a rotating handle (11) is fixedly arranged at the outer side end part of the turntable (10).

3. The mathematical education demonstration board with the large writing area according to claim 1, wherein: a limiting plate (12) is fixedly arranged at the rear end of the center of the frame body (1), and the front side surface of the limiting plate (12) is abutted against the writing belt (7).