CN111700419A

CN111700419A - Remote teaching platform

Info

Publication number: CN111700419A
Application number: CN202010604596.1A
Authority: CN
Inventors: 吴钰; 李金芳; 袁媛; 张月玥; 刘阳; 冯佳
Original assignee: Zhengzhou Railway Vocational and Technical College
Current assignee: Shaanxi Xinbada Intelligent Technology Co.,Ltd.
Priority date: 2020-06-29
Filing date: 2020-06-29
Publication date: 2020-09-25
Anticipated expiration: 2040-06-29
Also published as: CN111700419B

Abstract

The invention relates to a remote teaching platform; the technical scheme includes that the device comprises a box body, a cover plate is hinged at an opening of the box body, a first wire coiling wheel is coaxially fixed on a hinge shaft of the cover plate, a first rope is wound and fixed on the first wire coiling wheel, two upright posts are symmetrically arranged at the front end and the rear end of the right side of the box body, a connecting rod is hinged at the inner side of each upright post, a second wire coiling wheel is coaxially and fixedly connected on the connecting rod on the upright post at the rear side, the free end of the first rope is wound and fixed on the second wire coiling wheel, a vertical pneumatic telescopic rod is arranged at the left side of the box body, a U-shaped bracket with an upward opening is fixed at the extending end of the pneumatic telescopic rod, a pneumatic cylinder with a piston capable of automatically resetting upwards is arranged in the box body, the pneumatic cylinder is communicated with the pneumatic telescopic rod through an air, the pneumatic telescopic rod is inflated to extend and drive the U-shaped support to move upwards along with the blackboard.

Description

Remote teaching platform

Technical Field

The invention relates to the field of education equipment, in particular to a remote teaching platform.

Background

In the period of new coronary pneumonia epidemic situation, a teacher is required to give lessons to students remotely, and remote education is developed along with the era, the main equipment for the teacher to give lessons remotely is a mobile phone or a flat board at the present stage, the camera of the flat board or the mobile phone is used for live remote broadcasting to give lessons, the teacher needs to stand between the blackboard and the camera when writing on a small blackboard, so that a larger interval is needed between the blackboard and the camera to ensure that the teacher has enough space to write on the blackboard, but when the distance between the blackboard and the camera is too large, the pixels of the camera are limited, the students at the other end of the screen cannot see the content on the blackboard clearly, and if the blackboard and the camera are placed close to each other, the teacher can be caused to be incapable of standing at the front end of the blackboard to write.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides the remote teaching platform which effectively solves the problem that the distance between the blackboard and the camera cannot be adjusted in a self-adaptive mode to cooperate with teachers to write books and students to effectively watch and write contents on the blackboard in the remote teaching at the present stage.

The technical scheme for solving the problems comprises a box body with an opening at the upper end, a cover plate which can seal the opening of the box body is hinged at the opening of the box body, the rear end of the cover plate is hinged on the box body, the front end of the cover plate is tilted and tends to turn upwards around a hinged shaft, a first coiling wheel which is arranged at the right side of the box body is coaxially fixed on the hinged shaft of the cover plate, a first rope is wound and fixed on the first coiling wheel, two upright posts are symmetrically arranged at the front end and the rear end of the right side of the box body, the inner side of each upright post is respectively hinged with a connecting rod, a second coiling wheel is coaxially and fixedly connected on the connecting rod which is arranged on the upright post at the rear side, the free end of the first rope is wound and fixed on the second coiling wheel, a first positioning block which can position the connecting rod when the connecting rod rotates to be horizontal is arranged below each, a vertical blackboard is arranged above the box body, the free ends of the two connecting rods are respectively correspondingly hinged on the front side and the rear side of the upper end of the blackboard, the lower end of the blackboard is provided with a balancing weight, the balancing weight is provided with a first permanent magnet, the front end of the cover plate is provided with a supporting rod, the supporting rod is provided with a second permanent magnet, when the connecting rods rotate to the horizontal position and the front end of the cover plate is turned upwards to the maximum position, the first permanent magnet is contacted with the second permanent magnet and is mutually adsorbed, the left side of the box body is provided with a vertical pneumatic telescopic rod, the extending end of the pneumatic telescopic rod is fixed with a U-shaped bracket with an upward opening, a pneumatic cylinder with a piston capable of automatically resetting upwards is arranged in the box body, the pneumatic cylinder is communicated with the pneumatic telescopic rod through a gas pipe, when the cover plate is pressed, the pneumatic telescopic rod is inflated to extend and drive the U-shaped support to move upwards along with the blackboard.

The invention has novel concept, smart structure and strong practicability, and effectively solves the problem that the distance between the blackboard and the camera cannot be adjusted in a self-adaptive manner to match with the teacher's blackboard writing and the students to effectively watch and write contents on the blackboard in the prior stage of distance education.

Drawings

FIG. 1 is a front sectional view of the blackboard of the present invention when it is below.

Figure 2 is a left side sectional view of the blackboard of the present invention when it is below.

Fig. 3 is a front view of the blackboard of the present invention as it is above.

Fig. 4 is a left side view of the blackboard of the present invention as it is above.

Figure 5 is a top view of the blackboard of the present invention, with the blackboard under.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

As can be seen from figures 1 to 5, the invention comprises a box body 1 with an opening at the upper end, a cover plate 2 which can close the opening of the box body 1 is hinged at the opening of the box body 1, the rear end of the cover plate 2 is hinged on the box body 1, the front end is tilted and tends to turn upwards around a hinged shaft, a first reel 3 which is arranged at the right side of the box body 1 is coaxially fixed on the hinged shaft of the cover plate 2, a first rope 4 is wound and fixed on the first reel 3, two upright posts 5 are symmetrically arranged at the front and rear ends at the right side of the box body 1, a connecting rod 6 is respectively hinged at the inner side of each upright post 5, a second reel 7 is coaxially and fixedly connected on the connecting rod 6 which is arranged on the upright post 5 at the rear side, the free end of the first rope 4 is wound and fixed on the second reel 7, a first positioning block 8 which can limit the connecting rod 6 when rotating to, the upper end of each upright post 5 is provided with a second positioning block 9 for limiting the connecting rods 6 when the connecting rods 6 rotate to be vertical, a vertical blackboard 10 is arranged above the box body 1, the free ends of the two connecting rods 6 are correspondingly hinged to the front side and the rear side of the upper end of the blackboard 10 respectively, the lower end of the blackboard 10 is provided with a balancing weight 11, the balancing weight 11 is provided with a first permanent magnet 12, the front end of the cover plate 2 is provided with a supporting rod 13, the supporting rod 13 is provided with a second permanent magnet 14, when the connecting rods 6 rotate to be horizontal and the front end of the cover plate 2 turns upwards to the maximum position, the first permanent magnet 12 is in contact with the second permanent magnet 14 and adsorbs each other, the left side of the box body 1 is provided with a vertical air pressure telescopic rod 15, the extending end of the air pressure telescopic rod 15 is fixed with a U-shaped bracket 16, pneumatic cylinder 17 and pneumatic telescoping rod 15 are through the trachea intercommunication, when pressing apron 2 to horizontal position, and first take-up reel 3 is rotated to vertical position by horizontal position through second take-up reel 7 drive connecting rod 6, and pneumatic cylinder 17 is pressed simultaneously, and pneumatic telescoping rod 15 gets gas extension and drive U-shaped support and follow blackboard 10 upward movement.

In order to realize the tilting of the front end of the cover plate 2 and make the front end of the cover plate have a tendency of upwards turning around a hinge shaft, a plurality of first pressure springs 18 which are arranged side by side at intervals are arranged in the box body 1, one end of each first pressure spring 18 is fixed at the bottom of the box body 1, and the other end of each first pressure spring 18 is fixed on the lower end face of the cover plate 2.

In order to limit the cover plate 2, a third positioning block 19 is arranged on the inner side of the box body 1, when the cover plate 2 rotates to be horizontal, the lower end of the cover plate 2 is placed on the third positioning block 19, a second rope 20 is arranged between the cover plate 2 and the box body 1, one end of the second rope 20 is fixed on the cover plate 2, and the other end of the second rope 20 is fixed at the bottom of the box body 1.

In order to facilitate the guiding of the first rope 4, a guide tube 21 is arranged on the upright post 5 at the rear side, and the free end of the first rope 4 passes through the guide tube 21 and is connected with a tension spring.

In order to facilitate the automatic upward return of the piston in the pneumatic cylinder 17, a second pressure spring 22 is arranged in the pneumatic cylinder 17, one end of the second pressure spring 22 is fixed at the bottom of the cylinder body of the pneumatic cylinder 17, and the other end of the second pressure spring is fixed on the piston.

In order to facilitate the downward return of the blackboard 10, a return coil spring 23 mounted on the front side of the front end upright 5 is coaxially fixed to the hinge shaft of the front end link 6.

Make things convenient for the mr to write when blackboard 10 rotates to rise to the highest position in order to realize, second locating piece 9 is the stairstepping locating piece, when connecting rod 6 rotates to vertical, can be spacing to connecting rod 6, can support and spacing blackboard 10 right-hand member face from the right side again, makes things convenient for the mr to write.

The specific working process of the invention is as follows: the initial state of the device is as follows: the teacher does not stand on the cover plate 2, at the moment, the front end of the cover plate 2 is tilted upwards under the reset action of the first pressure spring 18, the tilting height of the front end of the cover plate 2 is limited under the limiting action of the second rope 20, at the moment, the two connecting rods 6 rotate to be horizontal under the resetting action of the resetting coil spring 23, at the moment, the blackboard 10 moves to the lowest end position, the distance between the blackboard and the camera is the shortest, the support rod 13 at the front end of the cover plate 2 drives the second permanent magnet 14 to be adsorbed with the first permanent magnet 12, so that the blackboard 10 keeps vertical, under the reset action of the second pressure spring 22, the pneumatic cylinder 17 sucks back the air in the pneumatic telescopic rod 15 and enables the extending end of the pneumatic telescopic rod 15 to retract, at the moment, the U-shaped support is opposite to the blackboard 10 at the position, and the mobile phone is arranged on the U-shaped support, so that the camera of the mobile phone can clearly shoot all contents on the blackboard 10 when shooting.

When a teacher needs to write on a blackboard, the teacher steps from the rear end of the cover plate 2 to the cover plate 2, the cover plate 2 enables the front end of the cover plate 2 to move downwards under the action of gravity of the teacher, and the cover plate 2 is enabled to be in a horizontal shape under the action of the second positioning block 9, at the moment, the first pressure spring 18 is compressed and enables the cover plate to have a rebounding trend and elastic potential energy, meanwhile, when the cover plate 2 rotates around a hinge shaft of the cover plate, the hinge shaft of the cover plate drives the first winding wheel 3 to tighten the first rope 4, the tightening of the first rope 4 drives the second winding wheel 7 to rotate 90 degrees clockwise, in order to ensure that the second winding wheel 7 can drive the second winding wheel 7 to rotate 90 degrees when the first winding wheel 3 rotates a small angle, the diameter of the first winding wheel 3 is larger than that of the second winding wheel 7, the originally horizontal connecting rod 6 rotates to a vertical shape after the second winding wheel 7 rotates 90 degrees, at the moment, the second winding wheel is compressed and enables, when the connecting rod 6 rotates horizontally to be vertical, the connecting rod 6 moves from the first positioning block 8 and contacts with the second positioning block 9, the second positioning block 9 is in a step shape, therefore, the connecting rod 6 and the blackboard 10 can be positioned by the second positioning block 9, at the moment, the blackboard 10 moves to the uppermost position, a teacher can walk on the upper cover plate 2 and write on the blackboard 10, when the cover plate 2 rotates to be horizontal, the cover plate 2 extrudes the piston rod of the pneumatic cylinder 17, so that the air in the pneumatic cylinder 17 is transferred into the pneumatic telescopic rod 15, the second pressure spring 22 is compressed in the process and has the rebound tendency and the elastic potential energy, meanwhile, the pneumatic telescopic rod 15 is inflated to extend and drive the U-shaped plate to move upwards to the blackboard 10 corresponding to the uppermost position at the moment, the distance between the black spot and the camera is farthest at the moment, the students can still effectively watch the blackboard 10 when the teachers write, and the students are not easy to be distracted when listening to the class.

When the mr accomplished the blackboard writing, from apron 2 go up down, realize under the reset action of

first pressure spring

18, 2 front ends of apron reset, blackboard 10 resets down and is spacing under the adsorption of first permanent magnet 12 and second permanent magnet 14, realize the reset of air telescopic link 15 simultaneously at the reset action of second pressure spring 22, the U-shaped support resets to vertical form and makes the camera this moment just to moving to the blackboard 10 of position of the bottom, make things convenient for the clear mr's on the blackboard 10 of watching of student to write the content.

Compared with the traditional equipment, the device has the following advantages:

1. this device has two states, the mr writes the state and the top position when blackboard motion promptly, the position of highly meeting the mr blackboard-writing of blackboard this moment, the connecting rod is rotated into vertical form by the level form simultaneously, the space of standing is provided for the mr, the extension of atmospheric pressure telescopic link makes the camera follow blackboard upward movement simultaneously, and the student that makes can watch the mr blackboard-writing action, make the student thinking follow the mr all the time and be difficult to run the spirit, from the apron after the mr accomplishes the blackboard-writing, the blackboard resets, make the blackboard forward and move down, the atmospheric pressure telescopic link resets U-shaped support and moves down to just the position to camera this moment, the distance between blackboard and the camera becomes little this moment, make things convenient for the clear mr blackboard-writing content of seeing of student, the mr explains from the next door, student learns faster.

2. Because the blackboard is the articulated lower extreme non-stationary of upper end in this device, consequently install the balancing weight and install first permanent magnet simultaneously at the lower extreme of blackboard, when the blackboard resets from the top position to the bottom position, the blackboard must have the swing, the setting of two permanent magnets, make the blackboard can realize the location of blackboard when two permanent magnets adsorb each other when the swing, make the blackboard location more rapid, the second locating piece adopts cascaded simultaneously, effectually carry on spacingly to connecting rod and blackboard, make mr can not cause rocking of blackboard when writing conveniently write.

3. This device realizes through removing blackboard position that can be effectual providing writing the space for the mr and can make the clear content of writing of watching of student again when writing the completion for whole distance education process student is more concentrated, and this device convenient operation need not use electric power to operate simultaneously, makes this device can carry out remote teaching under various environment, more has practical value.

Claims

1. A long-distance teaching platform comprises a box body (1) with an opening at the upper end, and is characterized in that the opening of the box body (1) is hinged with a cover plate (2) capable of sealing the opening of the box body (1), the rear end of the cover plate (2) is hinged on the box body (1), the front end of the cover plate is tilted and tends to turn upwards around a hinged shaft, a first reel (3) arranged at the right side of the box body (1) is coaxially fixed on the hinged shaft of the cover plate (2), a first rope (4) is wound and fixed on the first reel (3), two upright posts (5) are symmetrically arranged at the front end and the rear end of the right side of the box body (1), the inner side of each upright post (5) is respectively hinged with a connecting rod (6), a second reel (7) is coaxially and fixedly connected on the connecting rod (6) arranged on the upright post (5) at the rear side, the free end of the first rope (4) is wound and, a first locating block (8) for limiting the connecting rod (6) when the connecting rod (6) rotates to the horizontal position is arranged below each connecting rod (6), a second locating block (9) for limiting the connecting rod (6) when the connecting rod (6) rotates to the vertical position is arranged at the upper end of each upright post (5), a vertical blackboard (10) is arranged above the box body (1), the free ends of the two connecting rods (6) are correspondingly hinged to the front side and the rear side of the upper end of the blackboard (10) respectively, a balancing weight (11) is arranged at the lower end of the blackboard (10), a first permanent magnet (12) is arranged on the balancing weight (11), a supporting rod (13) is arranged at the front end of the cover plate (2), a second permanent magnet (14) is arranged on the supporting rod (13), when the connecting rod (6) rotates to the horizontal position and the front end of the cover plate (2) upwards turns to the maximum position, the first permanent magnet (12), the left side of box (1) is equipped with a vertical air telescopic link (15), the end that stretches out of air telescopic link (15) is fixed with U-shaped support (16) that an opening up, be equipped with pneumatic cylinder (17) that a piston can make progress automatic re-setting in box (1), pneumatic cylinder (17) and air telescopic link (15) are through the trachea intercommunication, when pressing apron (2) to horizontal position, first spiral wheel (3) are rotated to vertical position by horizontal position through second spiral wheel (7) drive connecting rod (6), pneumatic cylinder (17) are pressed simultaneously, air telescopic link (15) get angry extension and drive U-shaped support and follow blackboard (10) upward movement.

2. The remote teaching platform according to claim 1, wherein a plurality of first compression springs (18) are arranged in the box body (1) at intervals side by side, one end of each first compression spring (18) is fixed at the bottom of the box body (1), and the other end of each first compression spring is fixed on the lower end face of the cover plate (2).

3. The remote teaching platform according to claim 1, wherein a third positioning block (19) is arranged on the inner side of the box body (1), the lower end of the cover plate (2) is arranged on the third positioning block (19) when the cover plate (2) rotates to be horizontal, a second rope (20) is arranged between the cover plate (2) and the box body (1), one end of the second rope (20) is fixed on the cover plate (2), and the other end of the second rope is fixed at the bottom of the box body (1).

4. A platform according to claim 1, wherein the post (5) on the rear side is provided with a guide tube (21), and the free end of the first rope (4) passes through the guide tube (21) and is connected with the tension spring.

5. A remote teaching platform according to claim 1, wherein a second pressure spring (22) is provided in the pneumatic cylinder (17), one end of the second pressure spring (22) is fixed to the bottom of the cylinder body of the pneumatic cylinder (17), and the other end is fixed to the piston.

6. A remote teaching lecture platform according to claim 1, wherein a return coil spring (23) installed at the front side of the front end upright (5) is coaxially fixed to the hinge axis of the front end link (6).

7. The remote teaching platform according to claim 1, wherein the second positioning block (9) is a stepped positioning block, and when the connecting rod (6) rotates to be vertical, the connecting rod (6) can be limited, and the right end face of the blackboard (10) can be supported and limited from the right side.