CN111419026B - Height-adjustable's teaching display device for education - Google Patents
Height-adjustable's teaching display device for education Download PDFInfo
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- CN111419026B CN111419026B CN202010394305.0A CN202010394305A CN111419026B CN 111419026 B CN111419026 B CN 111419026B CN 202010394305 A CN202010394305 A CN 202010394305A CN 111419026 B CN111419026 B CN 111419026B
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- air duct
- fixedly connected
- rotating shaft
- frame body
- side wall
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- 230000007246 mechanism Effects 0.000 claims abstract description 88
- 230000005540 biological transmission Effects 0.000 claims abstract description 36
- 239000000428 dust Substances 0.000 claims abstract description 30
- 238000004140 cleaning Methods 0.000 claims description 11
- 230000000149 penetrating effect Effects 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 6
- 230000003028 elevating effect Effects 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 230000010405 clearance mechanism Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Classifications
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B97/00—Furniture or accessories for furniture, not provided for in other groups of this subclass
- A47B97/04—Easels or stands for blackboards or the like
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/68—Regeneration of the filtering material or filter elements inside the filter by means acting on the cake side involving movement with regard to the filter elements
- B01D46/681—Regeneration of the filtering material or filter elements inside the filter by means acting on the cake side involving movement with regard to the filter elements by scrapers, brushes or the like
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
- B08B1/12—Brushes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L1/00—Repeatedly-usable boards or tablets for writing or drawing
- B43L1/04—Blackboards
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L21/00—Blackboard or slate cleaning devices
- B43L21/02—Blackboard or slate cleaning devices with means for absorbing the chalk dust
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Cleaning In General (AREA)
Abstract
The invention discloses a height-adjustable teaching display device for education, which comprises a base, wherein the upper end of the base is fixedly connected with a frame body, the inner walls of the two ends of the frame body are respectively provided with a lifting mechanism, one end of the frame body rotatably penetrates through an extending mechanism with a transmission function, the two lifting mechanisms are both in transmission connection with the extending mechanism, the side wall of the frame body is provided with a driving mechanism, the driving mechanism is in matched connection with the extending mechanism, a teaching board is arranged in the frame body, the side walls of the left end and the right end of the teaching board are respectively and fixedly connected with the driving ends of the two lifting mechanisms, the front end side wall of the teaching board is provided with a gas collecting box, the bottom of the gas collecting box is provided with a gas collecting port, the top surface of the gas collecting box is communicated with a corrugated pipe, the top surface of the frame body is fixedly penetrated with a first gas guide pipe, and the lower end of the first gas guide pipe is communicated with the gas outlet end of the corrugated pipe. The height of the teaching board can be adjusted according to the use requirement of teaching, and in addition, dust generated when the teaching board is used can be absorbed, so that the environmental protection performance of the teaching device is improved.
Description
Technical Field
The invention relates to the technical field of teaching display devices, in particular to a height-adjustable teaching display device for education.
Background
With the progress of science and technology, multimedia teaching is developed vigorously in China. Computers, projectors and the like gradually replace traditional teaching tools such as blackboards and chalks, and have good effects in teaching, training and reporting applications. At present, in the teaching process, the teaching increasingly focuses on the connection between classroom teaching and actual social culture, so the extensible range of teaching and teaching contents is enlarged.
But in the teaching show in-process of time, the blackboard is one of the show instrument that uses always, and its highly be not convenient for adjust when using, in addition, when the teaching show, the dust of production can not absorb the processing for teaching display device's feature of environmental protection is relatively poor.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a height-adjustable teaching display device for education.
In order to achieve the purpose, the invention adopts the following technical scheme:
a height-adjustable teaching display device for education comprises a base, wherein a frame body is fixedly connected to the upper end of the base, lifting mechanisms are arranged on the inner walls of two ends of the frame body, one end of the frame body is rotatably penetrated through an extending mechanism with a transmission function, the two lifting mechanisms are in transmission connection with the extending mechanism, a driving mechanism is arranged on the side wall of the frame body, the driving mechanism is in matched connection with the extending mechanism, a teaching board is arranged in the frame body, the side walls of the left end and the right end of the teaching board are respectively and fixedly connected with the driving ends of the two lifting mechanisms, a gas collection box is arranged on the side wall of the front end of the teaching board, a gas collection port is arranged at the bottom of the gas collection box, a corrugated pipe is arranged on the top surface of the frame body in a communicated manner, a first gas guide pipe is fixedly penetrated through the top surface of the frame body, and the lower end of the first gas guide pipe is communicated with the gas outlet end of the corrugated pipe, rotate on the lateral wall of first air duct and run through and be equipped with the suction mechanism, the suction mechanism is connected with the actuating mechanism transmission, rotate on the vertical part lateral wall of first air duct and run through and be equipped with reciprocating mechanism, the sealing plug has been clogged to the end of giving vent to anger of first air duct, first air duct be equipped with the gas outlet, the gas outlet intercommunication is equipped with the second air duct, the end of giving vent to anger of second air duct is located actuating mechanism directly over, install the dust screen in the gas outlet, the bottom fixedly connected with clearance mechanism of first air duct, clearance mechanism and dust screen offset contact, clearance mechanism rotates with reciprocating mechanism's reciprocal end and is connected.
Preferably, elevating system includes the vertical first spout that sets up on the support body lateral wall, it is equipped with first slider to slide in the first spout, the lateral wall of first slider and the lateral wall fixed connection of teaching board, the screw thread runs through on the first slider is equipped with the threaded rod, the both ends of threaded rod rotate with the both ends of first spout respectively and are connected, coaxial fixedly connected with first bevel gear on the threaded rod, first bevel gear is connected with extension mechanism transmission.
Preferably, the extension mechanism comprises a first rotating shaft which is rotatably arranged on one end side wall of the frame body in a penetrating mode, two second bevel gears are coaxially and fixedly connected to the first rotating shaft and meshed with the first bevel gears, an extension block is sleeved on the portion, located outside the frame body, of the first rotating shaft, an extension opening is formed in the extension block, the inner wall of the extension opening is in sliding connection with the side wall of the first rotating shaft, a first flat gear is coaxially and fixedly connected to the extension block, and the first flat gear is in transmission connection with the driving mechanism.
Preferably, a plurality of second sliding grooves are formed in the inner wall of the extending opening, second sliding blocks are arranged in the second sliding grooves in a sliding mode, and the second sliding blocks are fixedly connected with the side wall of the first rotating shaft.
Preferably, the driving mechanism comprises a driving motor fixedly arranged on the side wall of the frame body, the tail end of a driving shaft of the driving motor is fixedly connected with a second rotating shaft, the second rotating shaft is coaxially and fixedly connected with a second flat gear and a first belt pulley, the second flat gear is in transmission connection with the first flat gear, and the first belt pulley is in transmission connection with the air suction mechanism.
Preferably, the mechanism of breathing in runs through the third rotation axis that sets up on first air duct lateral wall including rotating, the third rotation axis is located first air duct horizontal part and rotates and runs through and be equipped with the bracing piece, the both ends of bracing piece respectively with first air duct inner wall fixed connection, the third rotation axis is located coaxial fixedly connected with fan blade in the first air duct horizontal part, the third rotation axis is located the coaxial fixedly connected with second belt pulley and the third belt pulley of first air duct outer part, the second belt pulley is connected with first belt pulley transmission, the third belt pulley is connected with reciprocating mechanism transmission.
Preferably, reciprocating mechanism runs through the fourth rotation axis that first air duct lateral wall set up including rotating, the coaxial fixedly connected with fourth belt pulley of part that the fourth rotation axis is located first air duct outside of the tubes, the fourth belt pulley is connected with the third belt pulley transmission, the one end fixedly connected with disc that the fourth rotation axis is located first air duct, the edge of disc rotates and is connected with the connecting rod, the connecting rod rotates with clearance mechanism and is connected.
Preferably, clearance mechanism includes the telescopic link of fixed connection on first air duct bottom, telescopic link upper end fixedly connected with montant, a plurality of brush boards of fixedly connected with on the lateral wall of montant, the brush board offsets with the dust screen and contacts, the lateral wall and the connecting rod of montant rotate to be connected, the cover is equipped with the spring on the telescopic link, the both ends of spring respectively with the bottom and the montant fixed connection of first air duct.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the teaching board, the lifting mechanism is arranged, the lifting mechanism can control the lifting of the teaching board, the height of the teaching board can be adjusted according to the use conditions, different teaching use requirements can be met conveniently, the teaching board can be adjusted by the driving motor, and convenience in adjustment can be guaranteed.
2. According to the dust collection device, the dust generated by the teaching board during teaching can be absorbed into the first air guide pipe through the air suction mechanism, the driving mechanism and the dust screen, the dust is filtered and removed through the dust screen, the airflow after dust removal acts on the driving motor, the dust generated during teaching display can be absorbed, the environmental protection performance of the teaching display device is improved, the driving motor can be effectively cooled, the service life of the driving motor is prolonged, in addition, the dust on the dust screen can be cleaned through the reciprocating mechanism and the cleaning mechanism, the circulation of the dust screen is ensured, the dust collection is realized, and the environmental protection performance of the teaching display device is improved.
Drawings
FIG. 1 is a perspective view of a height adjustable educational presentation apparatus in accordance with the present invention;
FIG. 2 is an enlarged view of a portion A of FIG. 1;
FIG. 3 is a partial enlarged view of FIG. 1 at B;
fig. 4 is a left side perspective view of a gas collection box in the height adjustable educational demonstration apparatus according to the present invention.
In the figure: the gas collecting device comprises a base 1, a frame body 2, a teaching board 3, a gas collecting box 4, a gas collecting opening 5, a corrugated pipe 6, a first gas guide pipe 7, a support rod 8, a sealing plug 9, a second gas guide pipe 10, a dust screen 11, a first sliding chute 12, a first sliding block 13, a threaded rod 14, a first bevel gear 15, a first rotating shaft 16, a second bevel gear 17, an extension block 18, an extension opening 19, a second sliding chute 20, a second sliding block 21, a first flat gear 22, a driving motor 23, a second flat gear 24, a first belt pulley 25, a third rotating shaft 26, a fan blade 27, a second belt pulley 28, a third belt pulley 29, a fourth rotating shaft 30, a fourth belt pulley 31, a disk 32, a connecting rod 33, a vertical rod 34, a brush board 35, a telescopic rod 36, a spring 37 and a second rotating shaft 38.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-4, a height-adjustable teaching demonstration device for education comprises a base 1, a frame body 2 is fixedly connected to the upper end of the base 1, lifting mechanisms are respectively arranged on the inner walls of the two ends of the frame body 2, one end of the frame body 2 is rotatably penetrated through an extension mechanism with a transmission function, the two lifting mechanisms are both in transmission connection with the extension mechanism, a driving mechanism is arranged on the side wall of the frame body 2, the driving mechanism is in fit connection with the extension mechanism, a teaching board 3 is arranged in the frame body 2, the side walls of the left and right ends of the teaching board 3 are respectively fixedly connected with the driving ends of the two lifting mechanisms, a gas collection box 4 is arranged on the side wall of the front end of the teaching board 3, a gas collection port 5 is arranged at the bottom of the gas collection box 4, a corrugated pipe 6 is communicated with the top surface of the gas collection box 4, it is required to be noted that the gas collection box 4 is arranged close to the upper end of the teaching board 3, and the length of the corrugated pipe 6 can be changed along with the lifting of the teaching board 3, the top surface of the frame body 2 is fixedly provided with a first air duct 7 in a penetrating way, the lower end of the first air duct 7 is communicated with the air outlet end of the corrugated pipe 6, the side wall of the first air duct 7 is provided with an air suction mechanism in a penetrating way in a rotating way, the air suction mechanism is in transmission connection with a driving mechanism, the vertical part side wall of the first air duct 7 is provided with a reciprocating mechanism in a penetrating way in a rotating way, the air outlet end of the first air duct 7 is stuffed with a sealing plug 9, it needs to be explained that the air outlet end of the first air duct 7 is arranged in an inclined way so as to facilitate the falling cleaning of dust, the sealing plug 9 can seal the first air duct 7, the first air duct 7 is provided with an air outlet, the air outlet is communicated with a second air duct 10, the air outlet end of the second air duct 10 is positioned right above the driving mechanism, a dust screen 11 is arranged in the air outlet, the bottom of the first air duct 7 is fixedly connected with a cleaning mechanism, and the cleaning mechanism is in contact with the dust screen 11 in a propping way, the cleaning mechanism is rotationally connected with the reciprocating end of the reciprocating mechanism.
Wherein, elevating system includes vertical first spout 12 that sets up on 2 lateral walls of support body, it is equipped with first slider 13 to slide in first spout 12, the lateral wall of first slider 13 and the lateral wall fixed connection of teaching board 3, the screw thread runs through on first slider 13 and is equipped with threaded rod 14, the both ends of threaded rod 14 rotate with the both ends of first spout 12 respectively and are connected, coaxial fixedly connected with first bevel gear 15 on the threaded rod 14, first bevel gear 15 is connected with the extension mechanism transmission, it is explainable that, threaded rod 14 and first slider 13 threaded connection, can have the effect of location locking to first slider 13.
Wherein, extend the mechanism including rotating the first rotation axis 16 that runs through the one end lateral wall setting of support body 2, two second bevel gears 17 of coaxial fixedly connected with on the first rotation axis 16, second bevel gear 17 and the meshing of first bevel gear 15, first rotation axis 16 is located the cover on the outer part of support body 2 and is equipped with extension piece 18, be equipped with extension mouth 19 in the extension piece 18, the inner wall of extension mouth 19 and the lateral wall sliding connection of first rotation axis 16, coaxial fixedly connected with first pinion 22 on the extension piece 18, first pinion 22 is connected with the actuating mechanism transmission, it needs to explain, the inner wall of extension mouth 19 is equipped with the dull polish layer, increase the direct frictional force of extension mouth 19 and first rotation axis 16, ensure that extension piece 18 does not receive under the effect of external force on the horizontal direction, the effect that has the location.
Wherein, be equipped with a plurality of second spouts 20 on the inner wall of extension mouth 19, second spout 20 slides and is equipped with second slider 21, and second slider 21 and the lateral wall fixed connection of first rotation axis 16, wherein, be convenient for first rotation axis 16 and extension piece 18 synchronous revolution.
The driving mechanism comprises a driving motor 23 fixedly arranged on the side wall of the frame body 2, the end of a driving shaft of the driving motor 23 is fixedly connected with a second rotating shaft 38, the second rotating shaft 38 is coaxially and fixedly connected with a second flat gear 24 and a first belt pulley 25, the second flat gear 24 is in transmission connection with a first flat gear 22, and the first belt pulley 25 is in transmission connection with the air suction mechanism, it should be noted that when the extension block 18 is pulled, the first flat gear 22 is separated from the second flat gear 24, and when the first flat gear 22 is meshed with the second flat gear, the first flat gear 22 can be manually rotated to be meshed with the second flat gear 24.
More specifically, the air suction mechanism includes a third rotating shaft 26 rotatably disposed on the side wall of the first air duct 7, the third rotating shaft 26 is located in the horizontal portion of the first air duct 7 and rotatably disposed with a support rod 8, two ends of the support rod 8 are fixedly connected with the inner wall of the first air duct 7, the third rotating shaft 26 is located in the horizontal portion of the first air duct 7 and coaxially and fixedly connected with a fan blade 27, the third rotating shaft 26 is located in the outer portion of the first air duct 7 and coaxially and fixedly connected with a second belt pulley 28 and a third belt pulley 29, the second belt pulley 28 is in transmission connection with the first belt pulley 25, the third belt pulley 29 is in transmission connection with the reciprocating mechanism, and it should be noted that the first belt pulley 25 is in transmission connection with the second belt pulley 28 through a belt.
Wherein, reciprocating mechanism runs through the fourth rotation axis 30 that 7 lateral walls of first air duct set up including rotating, the coaxial fixedly connected with fourth belt pulley 31 of part that fourth rotation axis 30 is located outside first air duct 7, fourth belt pulley 31 is connected with the transmission of third belt pulley 29, wherein, fourth belt pulley 31 passes through the second belt and is connected with the transmission of third belt pulley 29, the one end fixedly connected with disc 32 that fourth rotation axis 30 is located first air duct 7, the edge of disc 32 rotates and is connected with connecting rod 33, connecting rod 33 rotates with clearance mechanism and is connected, it needs to explain, connecting rod 33 sets up in the edge of disc 32, be convenient for drive clearance mechanism reciprocating motion in vertical direction.
More specifically, clearance mechanism includes telescopic link 36 of fixed connection in 7 bottoms of first air duct, 36 upper ends of telescopic link fixedly connected with montant 34, a plurality of brush boards 35 of fixedly connected with on the lateral wall of montant 34, brush board 35 offsets with the dust screen 11 and contacts, the lateral wall of montant 34 rotates with connecting rod 33 and is connected, the cover is equipped with spring 37 on the telescopic link 36, spring 37's both ends respectively with the bottom of first air duct 7 and montant 34 fixed connection, it is worth mentioning that, join in marriage a reciprocating mechanism's effect at spring 37, can make brush board 35 reciprocating motion in vertical direction, the dust screen 11 of being convenient for clears up.
In the invention, when in use, the extension block 18 is manually rotated to adjust the meshing angle of the first flat gear 22 and the second flat gear 24, and the extension block 18 is pushed towards the direction of the base 1, so that the first flat gear 22 is meshed with the second flat gear 24, the driving motor 23 is started to rotate at a low speed, and then the first rotating shaft 16 can be driven to rotate, the threaded rod 14 can be driven to rotate due to the meshing of the first bevel gear 15 and the second bevel gear 17, the first sliding block 13 can be driven to slide in the first sliding groove 12, and then the teaching board 3 can be driven to lift, so that the height of the teaching board 3 can be conveniently adjusted according to the teaching and exhibiting requirements, the collision can be prevented by observing the direct distance between the teaching board 3 and the first rotating shaft 16, when in use, the first flat gear 22 and the second flat gear 24 can be separated, and the first belt pulley 25 is in transmission connection with the second belt pulley 28, the third rotating shaft 26 can be rotated, the fan blade 27 and the third belt pulley 29 can be driven to synchronously rotate, the fan blade 27 can suck dust generated when the teaching board 3 is used into the first air duct 7 through the air collecting port 5 of the air collecting box 4, the dust enters the second air duct 10 after being filtered by the dustproof net 11, and the dust is blown onto the driving motor 23 finally, the driving motor 23 can be cooled, the service life of the driving motor 23 is prolonged, meanwhile, the third belt pulley 29 is in transmission connection with the fourth belt pulley 31, the fourth rotating shaft 30 and the disc 32 can be driven to synchronously rotate, the vertical rod 34 can reciprocate in the vertical direction through the rotating connection effect of the connecting rod 33 and the action of the spring 37, so that the brush plate 35 cleans the dust on the dustproof net 11, the circulation of the dustproof net 11 and the cleaned dust are ensured, the sealing plug 9 can be opened periodically for collection and cleaning.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. The height-adjustable teaching display device for education comprises a base (1) and is characterized in that a frame body (2) is fixedly connected to the upper end of the base (1), lifting mechanisms are arranged on the inner walls of the two ends of the frame body (2), one end of the frame body (2) is rotatably penetrated through an extending mechanism with a transmission function, the two lifting mechanisms are in transmission connection with the extending mechanism, a driving mechanism is arranged on the side wall of the frame body (2) and is in matched connection with the extending mechanism, a teaching board (3) is arranged in the frame body (2), the side walls of the left end and the right end of the teaching board (3) are respectively and fixedly connected with the driving ends of the two lifting mechanisms, a gas collecting box (4) is arranged on the side wall of the front end of the teaching board (3), a gas collecting port (5) is arranged at the bottom of the gas collecting box (4), and a corrugated pipe (6) is communicated with the top surface of the gas collecting box (4), the top surface of the frame body (2) is fixedly provided with a first air duct (7) in a penetrating manner, the lower end of the first air duct (7) is communicated with the air outlet end of the corrugated pipe (6), the side wall of the first air duct (7) is rotated to penetrate through an air suction mechanism, the air suction mechanism is in transmission connection with a driving mechanism, the vertical part side wall of the first air duct (7) is rotated to penetrate through a reciprocating mechanism, the air outlet end of the first air duct (7) is plugged with a sealing plug (9), the first air duct (7) is provided with an air outlet, the air outlet is communicated with a second air duct (10), the air outlet end of the second air duct (10) is positioned right above the driving mechanism, a dust screen (11) is installed in the air outlet, the bottom of the first air duct (7) is fixedly connected with a cleaning mechanism, and the cleaning mechanism is in offset contact with the dust screen (11), the cleaning mechanism is rotationally connected with the reciprocating end of the reciprocating mechanism; elevating system is including vertical first spout (12) that sets up on support body (2) lateral wall, it is equipped with first slider (13) to slide in first spout (12), the lateral wall of first slider (13) and the lateral wall fixed connection of teaching board (3), screw thread runs through on first slider (13) and is equipped with threaded rod (14), the both ends of threaded rod (14) rotate with the both ends of first spout (12) respectively and are connected, coaxial fixedly connected with first bevel gear (15) on threaded rod (14), first bevel gear (15) are connected with extension mechanism transmission.
2. The height-adjustable teaching demonstration device for education as claimed in claim 1, wherein the extending mechanism comprises a first rotating shaft (16) rotatably penetrating through a side wall of one end of the frame body (2), two second bevel gears (17) are coaxially and fixedly connected to the first rotating shaft (16), the second bevel gears (17) are meshed with the first bevel gears (15), an extending block (18) is sleeved on a portion, located outside the frame body (2), of the first rotating shaft (16), an extending opening (19) is formed in the extending block (18), an inner wall of the extending opening (19) is in sliding connection with the side wall of the first rotating shaft (16), a first flat gear (22) is coaxially and fixedly connected to the extending block (18), and the first flat gear (22) is in transmission connection with the driving mechanism.
3. The height-adjustable teaching demonstration device for education as claimed in claim 2 wherein, a plurality of second sliding grooves (20) are provided on the inner wall of the extending opening (19), a second sliding block (21) is slidably provided in the second sliding grooves (20), and the second sliding block (21) is fixedly connected with the side wall of the first rotating shaft (16).
4. The height-adjustable teaching demonstration device for education as claimed in claim 3, wherein the driving mechanism comprises a driving motor (23) fixedly arranged on the side wall of the frame body (2), the end of the driving shaft of the driving motor (23) is fixedly connected with a second rotating shaft (38), the second rotating shaft (38) is coaxially and fixedly connected with a second flat gear (24) and a first belt pulley (25), the second flat gear (24) is in transmission connection with the first flat gear (22), and the first belt pulley (25) is in transmission connection with the air suction mechanism.
5. A height adjustable educational demonstration apparatus according to claim 4 wherein, the air suction mechanism comprises a third rotating shaft (26) which is rotatablely arranged on the side wall of the first air duct (7) in a penetrating way, the third rotating shaft (26) is positioned in the horizontal part of the first air duct (7) and is provided with a supporting rod (8) in a rotating and penetrating way, two ends of the support rod (8) are respectively fixedly connected with the inner wall of the first air duct (7), the third rotating shaft (26) is positioned in the horizontal part of the first air duct (7) and is coaxially and fixedly connected with a fan blade (27), the third rotating shaft (26) is coaxially and fixedly connected with a second belt pulley (28) and a third belt pulley (29) at the outer part of the first air duct (7), the second belt pulley (28) is in transmission connection with the first belt pulley (25), and the third belt pulley (29) is in transmission connection with the reciprocating mechanism.
6. The height-adjustable teaching display device for education as claimed in claim 5, wherein the reciprocating mechanism comprises a fourth rotating shaft (30) rotatably penetrating through the side wall of the first air duct (7), a fourth belt pulley (31) is fixedly and coaxially connected to the portion of the fourth rotating shaft (30) located outside the first air duct (7), the fourth belt pulley (31) is in transmission connection with the third belt pulley (29), a disc (32) is fixedly connected to one end of the fourth rotating shaft (30) located inside the first air duct (7), a connecting rod (33) is rotatably connected to the edge of the disc (32), and the connecting rod (33) is rotatably connected with the cleaning mechanism.
7. The height-adjustable teaching display device for education as claimed in claim 6, wherein the cleaning mechanism comprises a telescopic rod (36) fixedly connected to the bottom of the first air duct (7), a vertical rod (34) is fixedly connected to the upper end of the telescopic rod (36), a plurality of brush plates (35) are fixedly connected to the side wall of the vertical rod (34), the brush plates (35) are in contact with the dust screen (11) in a propping manner, the side wall of the vertical rod (34) is rotatably connected with the connecting rod (33), a spring (37) is sleeved on the telescopic rod (36), and two ends of the spring (37) are respectively fixedly connected with the bottom of the first air duct (7) and the vertical rod (34).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010394305.0A CN111419026B (en) | 2020-05-11 | 2020-05-11 | Height-adjustable's teaching display device for education |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010394305.0A CN111419026B (en) | 2020-05-11 | 2020-05-11 | Height-adjustable's teaching display device for education |
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| Publication Number | Publication Date |
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| CN111419026A CN111419026A (en) | 2020-07-17 |
| CN111419026B true CN111419026B (en) | 2021-08-03 |
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| CN202010394305.0A Expired - Fee Related CN111419026B (en) | 2020-05-11 | 2020-05-11 | Height-adjustable's teaching display device for education |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112240462A (en) * | 2020-11-25 | 2021-01-19 | 辽宁省交通高等专科学校 | Remote teaching device based on cloud calculates |
| CN112709914A (en) * | 2020-12-16 | 2021-04-27 | 河南艺术职业学院 | New media mobile news spreading device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6330732B1 (en) * | 2000-07-19 | 2001-12-18 | Te-Hsi Liu | Dust collect device for an eraser |
| CN107952703A (en) * | 2017-10-16 | 2018-04-24 | 安徽泰格电气科技股份有限公司 | A kind of electric power cabinet dust-extraction unit |
| CN208027252U (en) * | 2018-03-06 | 2018-10-30 | 广州云强信息科技有限公司 | A kind of cloud computing server of good dustproof effect |
| CN210136565U (en) * | 2019-01-21 | 2020-03-10 | 文莹 | Chinese teaching presentation device |
| CN209544878U (en) * | 2019-04-01 | 2019-10-25 | 青岛联合智造科技有限公司 | A kind of dust control by ventilation power distribution cabinet |
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