CN211582282U

CN211582282U - Lifting blackboard

Info

Publication number: CN211582282U
Application number: CN201921601948.7U
Authority: CN
Inventors: 马军星; 孙孟珂; 王彩涛
Original assignee: Changan University
Current assignee: Changan University
Priority date: 2019-09-24
Filing date: 2019-09-24
Publication date: 2020-09-29
Anticipated expiration: 2029-09-24

Abstract

The utility model discloses a lifting blackboard, which is provided with a blackboard guide frame fixed on a wall surface to be used, wherein the inner sides of the left and right ends of the blackboard guide frame are respectively fixed with a guide rail, the guide rails are vertically arranged at the inner sides of the blackboard guide frame, pulleys are fixed at both sides of a blackboard body, and a vertically arranged rack is fixed at the rear end of the blackboard body; the blackboard body is arranged in a blackboard guide frame, guide rails on two sides of the blackboard guide frame are positioned in sliding grooves of pulleys on two sides of the blackboard body, and the pulleys can slide on the guide rails relative to the guide rails; thereby realize reciprocating of blackboard body, change the height of blackboard body at any time, improve blackboard body's availability factor, be fixed with drive arrangement in blackboard guide frame one side simultaneously, be equipped with drive gear on drive arrangement's the output shaft, drive gear can realize corotation and reversal with rack toothing transmission, drive arrangement can drive gear and realize the automatic rising of blackboard body, labour saving and time saving.

Description

Lifting blackboard

Technical Field

The utility model belongs to the teaching aid, concretely relates to lift blackboard.

Background

The blackboard is a tool for teaching knowledge or publicizing some ideas, ideas and the like, but most of the blackboards are fixed on a wall at present, and the position height cannot be adjusted. It has some problems: 1, to the low people of height, as can not reach the upper portion of blackboard enough, 3 they can raise the arm, not only bring the difficulty for writing, the blackboard utilization ratio has also reduced moreover. 2, when writing on the lower part of the blackboard, there is also difficulty in writing, and it is difficult for a person sitting behind to see the contents of the blackboard. 3, there is a problem when wiping a blackboard, and too high or too low brings difficulty to a person who wipes a blackboard.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a lifting blackboard to overcome prior art's is not enough.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a lifting blackboard comprises a blackboard body and a blackboard guide frame, wherein the front end of the blackboard body is a writing board surface, a vertically arranged rack is fixed at the rear end of the blackboard body, and pulleys are fixed on two sides of the blackboard body; the inner sides of the left end and the right end of the blackboard guide frame are respectively fixed with a guide rail, the guide rails are vertically arranged at the inner sides of the blackboard guide frame, the blackboard body is positioned in the blackboard guide frame, the guide rails at the two sides of the blackboard guide frame are positioned in sliding grooves of pulleys at the two sides of the blackboard body, and the pulleys can slide on the guide rails relative to the guide rails; a driving device is fixed on one side of the blackboard guide frame, a transmission gear is arranged on an output shaft of the driving device, the transmission gear can be meshed with a rack for transmission, the driving device can drive the transmission gear to realize forward rotation and reverse rotation, and the blackboard guide frame is fixed on a wall surface to be used.

Furthermore, the pulleys are fixed on two sides of the blackboard body through a retainer, and the retainer is fixed on the blackboard body through bolts.

Further, the rack is fixed on the blackboard body through a screw.

Furthermore, the driving device comprises a driving motor and a speed reducer, the output end of the driving motor is meshed with the input end of the speed reducer through a worm gear, and a transmission gear is fixed at the output end of the speed reducer.

Furthermore, a first stopper is arranged at the upper end of the blackboard guide frame, and a second stopper is arranged at the lower end of the blackboard guide frame.

Further, an output shaft end of the driving device is also connected with a pneumatic brake for ensuring the stability of the blackboard body 1 in a stop state.

Further, the length of the rack is larger than the up-and-down movement stroke of the blackboard body.

Further, the outer frame of the blackboard is fixed on the wall surface to be used through screws.

Furthermore, the first stopper and the second stopper both adopt capacitive sensors.

Further, the blackboard eraser comprises a wiping driving motor fixed to the other side of the blackboard guide frame, a wiping mechanism transmission gear is fixed to an output shaft of the wiping driving motor, a guide frame is further fixed to the other side of the blackboard guide frame, a wiping mechanism transmission rack capable of sliding along the guide frame is arranged in the guide frame and meshed with the wiping mechanism transmission gear, and a blackboard eraser in contact with the writing board surface of the blackboard body is fixed to one section of the wiping mechanism transmission rack.

Compared with the prior art, the utility model discloses following profitable technological effect has:

the utility model relates to a lifting blackboard, which is characterized in that a blackboard guide frame fixed on a wall surface to be used is arranged, a guide rail is respectively fixed at the inner sides of the left end and the right end of the blackboard guide frame, the guide rail is vertically arranged at the inner side of the blackboard guide frame, pulleys are fixed at both sides of a blackboard body, and a vertically arranged rack is fixed at the rear end of the blackboard body; the blackboard body is arranged in a blackboard guide frame, guide rails on two sides of the blackboard guide frame are positioned in sliding grooves of pulleys on two sides of the blackboard body, and the pulleys can slide on the guide rails relative to the guide rails; thereby realize reciprocating of blackboard body, change the height of blackboard body at any time, improve blackboard body's availability factor, be fixed with drive arrangement in blackboard guide frame one side simultaneously, be equipped with drive gear on drive arrangement's the output shaft, drive gear can realize corotation and reversal with rack toothing transmission, drive arrangement can drive gear and realize the automatic rising of blackboard body, labour saving and time saving.

Further, drive arrangement includes driving motor and reduction gear, and driving motor's output passes through the worm gear meshing with the input of reduction gear, and the output of reduction gear is fixed with drive gear, utilizes worm gear meshing structure, utilizes the drive gear to fix a position the blackboard body, realizes stopping spacing of blackboard body, prevents the automatic landing of blackboard body.

Furthermore, a first limiting stopper is arranged at the upper end of the blackboard guide frame, and a second limiting stopper is arranged at the lower end of the blackboard guide frame, so that the highest position and the lowest position of the blackboard body are limited.

Furthermore, the output shaft end of the driving device is also connected with a pneumatic brake for ensuring the stability of the blackboard body in a stop state, and the pneumatic brake is adopted to brake the output shaft of the driving device so as to ensure the staying stability of the blackboard body.

Furthermore, the blackboard writing board is wiped by arranging the blackboard eraser structure driven by the motor, so that the time for a user to wipe the blackboard is reduced, and the use efficiency is improved.

Drawings

Fig. 1 is a rear view of the structure of the present invention.

Fig. 2 is a front view of the present invention.

Fig. 3 is a schematic structural diagram of the driving device of the present invention.

Fig. 4 is a schematic view of a transmission gear and rack mounting structure.

In the figure, 1, a blackboard body; 2. a blackboard guide frame; 3. a second stopper; 4. a drive device; 5. a first stopper; 6. a rack; 7. a transmission gear; 8. a pneumatic brake; 9. a wall surface to be used; 10. a pulley; 11. a guide rail; 12. a holder; 13. a blackboard eraser; 14. the wiping mechanism drives the rack; 15. a wiping mechanism transmission gear; 16. wiping the driving motor; 17. a guide frame.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings:

as shown in fig. 1 to 4, a lifting blackboard comprises a blackboard body 1 and a blackboard guide frame 2, wherein the front end of the blackboard body 1 is a writing board surface, a vertically arranged rack 6 is fixed at the rear end of the blackboard body 1, and pulleys 10 are fixed on both sides of the blackboard body 1; the inner sides of the left end and the right end of the blackboard guide frame 2 are respectively fixed with a guide rail 11, the guide rails 11 are vertically arranged on the inner sides of the blackboard guide frame 2, pulleys 10 can slide on the guide rails 11 relative to the guide rails 11, a driving device 4 is fixed on one side of the blackboard guide frame 2, a transmission gear 7 is arranged on an output shaft of the driving device 4, the transmission gear 7 can be meshed with a rack 6 for transmission, the driving device 4 can drive the transmission gear to realize forward rotation and reverse rotation, and the blackboard guide frame 2 is fixed on a wall surface 9 to be used.

The blackboard eraser comprises a blackboard body 1 and is characterized by further comprising a wiping driving motor 16 fixed on the other side of the blackboard guide frame 2, a wiping mechanism transmission gear 15 is fixed on an output shaft of the wiping driving motor 16, a guide frame 17 is further fixed on the other side of the blackboard guide frame 2, a wiping mechanism transmission rack 14 capable of sliding along the guide frame 17 is arranged in the guide frame 17, the wiping mechanism transmission rack 14 is meshed with the wiping mechanism transmission gear 15, and a section of the wiping mechanism transmission rack 14 is fixed with a blackboard eraser 13 in contact with the writing board surface of the blackboard body 1. When the writing board surface of the blackboard body is wiped, the transmission gear 15 of the wiping mechanism drives the transmission rack 14 of the wiping mechanism to move left and right, and the blackboard body 1 is matched to move up and down, so that the writing board surface of the blackboard body is wiped.

Two pulleys 10 are installed on one side of the blackboard body 1, so that the stability of the blackboard body 1 in up-and-down sliding is ensured.

The pulley 10 is fixed on both sides of the blackboard body 1 by a holder 12, and the holder 12 is fixed on the blackboard body 1 by a bolt.

The rack 6 is fixed on the blackboard body 1 through a screw.

The driving device 4 comprises a driving motor and a speed reducer, the output end of the driving motor is meshed with the input end of the speed reducer through a worm gear, and the output end of the speed reducer is fixed with a transmission gear 7.

The upper end of the blackboard guide frame 2 is provided with a first stopper 5, and the lower end of the blackboard guide frame 2 is provided with a second stopper 3.

The output shaft end of the driving device 4 is also connected with a pneumatic brake 8 for ensuring the stability of the blackboard body 1 in a stop state.

The length of the rack 6 is larger than the up-and-down movement stroke of the blackboard body 1.

The blackboard outer frame 2 is fixed on the wall surface 9 to be used through screws.

The first stopper 5 and the second stopper 3 both adopt capacitive sensors.

The structure principle and the using steps of the present invention are further explained with the attached drawings as follows:

a gap of the driving device 4 is left on one side of the blackboard outer frame 2 on the wall surface 9 to be used. The blackboard outer frame 2 and the driving device 4 are both fixed on a wall surface 9 to be used, pulleys 10 at two ends of the blackboard body 1 are in contact with a guide rail 11, a transmission gear 7 on an output shaft of the driving device 4 is meshed with a rack 6 at the rear end of the blackboard body 1, the blackboard body 1 is lifted and descended through the meshing transmission of the transmission gear 7 and the rack 6, and the pulleys at two ends of the blackboard body 1 slide on the guide rail 11. When the blackboard body needs to move up and down, the driving device 4 is controlled to be meshed with the rack 6 through the transmission gear 7 for transmission, and the blackboard body 1 moves up or down. The control switch of the driving device 4 may be provided at a position convenient for control, such as on a platform, so as to realize the start, the close, the upward movement and the downward movement of the lifting of the blackboard 1.

Claims

1. A lifting blackboard is characterized by comprising a blackboard body (1) and a blackboard guide frame (2) fixed on a wall surface (9) to be used, wherein the front end of the blackboard body (1) is a writing board surface, a vertically arranged rack (6) is fixed at the rear end of the blackboard body (1), and pulleys (10) are fixed on two sides of the blackboard body (1); the inner sides of the left end and the right end of the blackboard guide frame (2) are respectively fixed with a guide rail (11), the guide rails (11) are vertically arranged on the inner side of the blackboard guide frame (2), the blackboard body (1) is positioned in the blackboard guide frame (2), the guide rails (11) on the two sides of the blackboard guide frame (2) are positioned in sliding grooves of pulleys (10) on the two sides of the blackboard body (1), and the pulleys (10) can slide on the guide rails (11) relative to the guide rails (11); a driving device (4) is fixed on one side of the blackboard guide frame (2), a transmission gear (7) is arranged on an output shaft of the driving device (4), and the transmission gear (7) can be meshed with the rack (6) for transmission.

2. A lifting blackboard according to claim 1, characterised in that the pulleys (10) are fixed on both sides of the blackboard body (1) by means of holders (12), and the holders (12) are fixed on the blackboard body (1) by means of bolts.

3. A lifting blackboard according to claim 1, characterised in that the rack (6) is fixed to the blackboard body (1) by means of screws.

4. A lifting blackboard according to claim 1, characterised in that the driving means (4) comprise a driving motor and a reducer, the output of the driving motor is engaged with the input of the reducer through a worm gear, and the output of the reducer is fixed with a transmission gear (7).

5. A lifting blackboard according to claim 1, characterised in that the upper end of the blackboard guide frame (2) is provided with a first stopper (5) and the lower end of the blackboard guide frame (2) is provided with a second stopper (3).

6. A lifting blackboard according to claim 1, characterised in that the output shaft end of the driving device (4) is also connected with a pneumatic brake (8) for ensuring the stability of the blackboard body (1) in the stop state.

7. A lifting blackboard according to claim 1, characterised in that the length of the rack (6) is greater than the up-and-down movement stroke of the blackboard body (1).

8. A lifting blackboard according to claim 1, characterised in that the blackboard guide frame (2) is fixed to the wall (9) to be used by means of screws.

9. A lifting blackboard according to claim 1, characterised in that the first stop (5) and the second stop (3) are capacitive sensors.

10. The lifting blackboard according to claim 1, further comprising a wiping drive motor (16) fixed to the other side of the blackboard guide frame (2), wherein a wiping mechanism transmission gear (15) is fixed to an output shaft of the wiping drive motor (16), a guide frame (17) is further fixed to the other side of the blackboard guide frame (2), a wiping mechanism transmission rack (14) capable of sliding along the guide frame (17) is arranged in the guide frame (17), the wiping mechanism transmission rack (14) is meshed with the wiping mechanism transmission gear (15), and a section of the wiping mechanism transmission rack (14) is fixed with a blackboard eraser (13) which is in contact with a writing board surface of the blackboard body (1).