CN109935111A - A kind of computer network teaching device - Google Patents
A kind of computer network teaching device Download PDFInfo
- Publication number
- CN109935111A CN109935111A CN201711357203.6A CN201711357203A CN109935111A CN 109935111 A CN109935111 A CN 109935111A CN 201711357203 A CN201711357203 A CN 201711357203A CN 109935111 A CN109935111 A CN 109935111A
- Authority
- CN
- China
- Prior art keywords
- fixedly connected
- bearing
- display screen
- bevel gear
- shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention discloses a kind of computer network teaching devices, including bottom plate, the upper surface of the bottom plate is fixedly connected with U-board, the upper surface of the U-board is connected with rotating device, the top of the rotating device is fixedly connected with display screen, the outer surface of the rotating device is connected with first bevel gear, and the side of U-board is connected with second bearing, and the inner surface of second bearing is socketed with the second shaft.The computer network teaching device, spring pushes downwards the rear side of moving lever upper surface by pulley, so that fixture block is connected in card slot again, so that turntable no longer rotates, so that display screen no longer rotates, the adjusting of display screen angle does not use motor drive, to save electric energy, manually adjust the rotation angle of display screen, so that the rotation of display screen is easier to control, the rotation angle for avoiding display screen is too big or too small, is adjusted again to not have to teacher, the time for saving teacher brings conveniently to teacher.
Description
Technical field
The present invention relates to computer teaching technology field, specially a kind of computer network teaching device.
Background technique
Teaching is a kind of distinctive personnel training activity of the mankind composed by the religion of teacher and student.Pass through this work
Dynamic, teacher is purposeful, planned and in an organized way guidance student actively consciously learns and accelerate to grasp Cultural Science basis
Knowledge and basic skills promote student's various aspects quality to improve comprehensively, them is made to become people required for society.The concept of teaching
It is abstract from teaching phenomenon and teaching practice and summarizes, the development of the intension of teaching also with history.
Computer teaching device is both provided with display screen mostly, and display screen is connected with computer, display screen display teaching
Content is to teach student's study by teacher, and according to field research needs, existing display screen can rotate mostly, display screen
Rotation is often driven by a motor, and wastes electric energy, and when rotating using motor driving display screen, the rotation angle of display screen
Degree is not easy to control, to be easy to teacher must be needed to adjust again aobvious so that the rotation angle of display screen is too big or too small
The angle of display screen brings inconvenience to teacher to waste the time of teacher.
Summary of the invention
(1) the technical issues of solving
In view of the deficiencies of the prior art, the present invention provides a kind of computer network teaching device, computer teaching dress is solved
It sets and is both provided with display screen mostly, display screen is connected with computer, and the display screen display content of courses is to by teacher's didactics
Raw study, according to field research needs, existing display screen can rotate mostly, and the rotation of display screen is often by motor band
It is dynamic, electric energy is wasted, and when rotating using motor driving display screen, the rotation angle of display screen is not easy to control, thus very
It is easy teacher must be needed to adjust the angle of display screen again, thus unrestrained so that the rotation angle of display screen is too big or too small
The time for having taken teacher brings inconvenient problem to teacher.
(2) technical solution
To achieve the above object, the invention provides the following technical scheme: a kind of computer network teaching device, including bottom plate, institute
The upper surface for stating bottom plate is fixedly connected with U-board, and the upper surface of the U-board is connected with rotating device, the rotating device
Top is fixedly connected with display screen, and the outer surface of the rotating device is connected with first bevel gear, the side clamping of the U-board
There is second bearing, the inner surface of the second bearing is socketed with the second shaft, and the outer surface of second shaft is connected with second
Bevel gear, the second bevel gear are meshed with first bevel gear, and the outer surface of second shaft is socketed with 3rd bearing, institute
The left side that 3rd bearing is connected to riser is stated, the second bevel gear is between second bearing and 3rd bearing, and described
The right end of two shafts is fixedly connected with turntable, and several card slots are offered in the outer rim of the turntable, and the right side of the riser is solid
There are two gripping mechanism, the turntables to be located between two gripping mechanisms for fixed connection.
The gripping mechanism includes fixed link, and the right side of the riser is fixedly connected with sliding sleeve by fixed link, described
The inner surface of sliding sleeve is socketed with slide bar, and the bottom end of two slide bars is fixedly connected in the upper surface of connecting rod, the slide bar
Top the front side of moving lever lower surface is fixedly connected on by traction rope, be fixedly connected in the middle part of the moving lever upper surface
Fourth bearing, the inner surface of the fourth bearing are socketed with third shaft, and the left end of the third shaft is fixedly connected on riser
Right side, the bottom end of the rear side of the moving lever upper surface and pulley overlaps, and the top of the pulley is solid by telescopic device
Surely it is connected to the lower surface of fixed plate, the left side of the fixed plate is fixedly connected on the right side of riser, and the moving lever is remote
One end from traction rope is fixedly connected with fixture block, and the fixture block is connected in card slot far from one end of moving lever.
Preferably, the right side of the turntable is fixedly connected with handle, and the upper surface of the connecting rod, which is fixedly connected with, to be stepped on
Plate.
Preferably, the rotating device includes first bearing, and the first bearing is connected to the upper surface of U-board, described
The inner surface of first bearing is socketed with first rotating shaft, and the first bevel gear is connected to the outer surface of first rotating shaft, and described first
The top of shaft is fixedly connected with the lower surface of display screen.
Preferably, the telescopic device includes telescopic rod and the spring for being socketed in flexible rod outer surface, the top of the pulley
End is fixedly connected on the lower surface of fixed plate by telescopic rod and spring.
Preferably, the lower surface of the bottom plate is fixedly connected with supporting leg, and the shape of the supporting leg is trapezoidal.
Preferably, the quantity of the supporting leg is four, and four supporting legs are located at the quadrangle of lower surface of base plate
Place.
(3) beneficial effect
The present invention provides a kind of computer network teaching device, have it is following the utility model has the advantages that
(1), the computer network teaching device, when teacher needs to adjust the angle of display screen, teacher is stepped on downwards with foot and is stepped on
Plate, traction rope pull downward on the front side of moving lever lower surface, and the rear end of moving lever drives fixture block to move upwards, and fixture block is no longer stuck in
In card slot, teacher rotates turntable by handle at this time, and turntable drives second bevel gear rotation, second bevel gear by the second shaft
First bevel gear rotation is engaged, first bevel gear is rotated by first rotating shaft driving display screen, when the angle for regulating display screen
Later, teacher no longer steps on pedal, under the elastic force effect of spring, after spring pushes downwards moving lever upper surface by pulley
Side, so that fixture block is connected in card slot again, so that turntable no longer rotates, so that display screen no longer rotates, display screen angle
The adjusting of degree does not use motor drive, to save electric energy, manually adjusts the rotation angle of display screen, so that display
The rotation of screen is easier to control, and the rotation angle for avoiding display screen is too big or too small, is adjusted again to not have to teacher
Section, saves the time of teacher, brings conveniently to teacher.
(2), computer network teaching device, by setting U-board and first bearing, so that first rotating shaft, the
The rotation of one bevel gear and display screen is more stable, while but also first bevel gear is more stable mutually nibbles with second bevel gear
It closes, by the way that handle is arranged, so that teacher is more convenient to rotate turntable by handle, to realize display screen angle
It adjusts.
(3), computer network teaching device, by the way that pulley is arranged, so that spring more smoothly passes over pulley
Push the rear side of moving lever upper surface downwards, by the way that traction rope is arranged so that slide bar it is more flexible by traction rope to
The lower front side for pulling moving lever lower surface, and structure of the invention is compact, design is rationally, practical.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that the present invention faces；
Fig. 2 is the structural schematic diagram of the right view of gripping mechanism of the present invention.
In figure: 1 bottom plate, 2 U-boards, 3 first bevel gears, 4 display screens, 5 rotating devices, 51 first bearings, 52 first turns
Axis, 6 gripping mechanisms, 601 sliding sleeves, 602 slide bars, 603 traction ropes, 604 moving levers, 605 telescopic devices, 6051 telescopic rods, 6052
Spring, 606 third shafts, 607 fourth bearings, 608 pulleys, 609 fixture blocks, 610 fixed links, 611 fixed plates, 7 second bevel gears,
8 second shafts, 9 second bearings, 10 3rd bearings, 11 turntables, 12 card slots, 13 handles, 14 connecting rods, 15 pedals, 16 supporting legs,
17 risers.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
As shown in Figs. 1-2, the present invention provides a kind of technical solution: a kind of computer network teaching device, including bottom plate 1,
The upper surface of bottom plate 1 is fixedly connected with U-board 2, and the lower surface of bottom plate 1 is fixedly connected with supporting leg 16, the shape of supporting leg 16
To be trapezoidal, the quantity of supporting leg 16 is four, and by the way that four supporting legs 16 are arranged, supporting leg 16 plays support to bottom plate 1 and makees
With under the cooperation of bottom plate 1, to ensure that the stability of whole device, and four supporting legs 16 are located under bottom plate 1
The four corners on surface, the upper surface of U-board 2 are connected with rotating device 5, and rotating device 5 includes first bearing 51, first bearing 51
It is connected to the upper surface of U-board 2, by setting U-board 2 and first bearing 51, so that first rotating shaft 52, first bevel gear
3 and display screen 4 rotation it is more stable, while but also first bevel gear 3 is more stable is meshed with second bevel gear 7,
The inner surface of first bearing 51 is socketed with first rotating shaft 52, and first bevel gear 3 is connected to the outer surface of first rotating shaft 52, and first turn
The top of axis 52 is fixedly connected with the lower surface of display screen 4, and the top of rotating device 5 is fixedly connected with display screen 4, rotating device
5 outer surface is connected with first bevel gear 3, and the side of U-board 2 is connected with second bearing 9, the inner surface socket of second bearing 9
There is the second shaft 8, by setting second bearing 9 and 3rd bearing 10, so that the second shaft 8 and second bevel gear 7 are more
Stable rotation, the outer surface of the second shaft 8 are connected with second bevel gear 7, and second bevel gear 7 is meshed with first bevel gear 3,
When teacher needs to adjust the angle of display screen 4, teacher steps on downwards pedal 15 with foot, and pedal 15 is driven by connecting rod 14 and slided
Bar 602 moves downward, and slide bar 602 pulls downward on the front side of 604 lower surface of moving lever by traction rope 603, after moving lever 604
End drives fixture block 609 to move upwards around third shaft 606, and fixture block 609 is no longer stuck in card slot 12, at this time spring 6052 and flexible
Bar 6051 is in compressive state, and teacher rotates turntable 11 by handle 13, and turntable 11 drives second bevel gear by the second shaft 8
7 rotations, second bevel gear 7 engage first bevel gear 3 and rotate, and first bevel gear 3 is revolved by 52 driving display screen 4 of first rotating shaft
Turn, the outer surface of the second shaft 8 is socketed with 3rd bearing 10, and 3rd bearing 10 is connected to the left side of riser 17, the second cone tooth
For wheel 7 between second bearing 9 and 3rd bearing 10, the right end of the second shaft 8 is fixedly connected with turntable 11, the right side of turntable 11
Face is fixedly connected with handle 13, by the way that handle 13 is arranged, so that teacher is more convenient to rotate turntable 11 by handle 13,
To realize the adjusting of 4 angle of display screen, several card slots 12 are offered in the outer rim of turntable 11, the right side of riser 17 is fixed
There are two gripping mechanisms 6 for connection, by the way that two gripping mechanisms 6 are arranged, to play on former and later two directions to turntable 11
Position-limiting action, so that turntable 11, which can neither rotate forward, to be inverted, turntable 11 is located between two gripping mechanisms 6.
Gripping mechanism 6 includes fixed link 610, and the right side of riser 17 is fixedly connected with sliding sleeve 601 by fixed link 610,
The inner surface of sliding sleeve 601 is socketed with slide bar 602, by the way that sliding sleeve 601 is arranged, so that the movement of slide bar 602 is more stable, and
And the bottom end of two slide bars 602 is fixedly connected in the upper surface of connecting rod 14, the upper surface of connecting rod 14, which is fixedly connected with, to be stepped on
Plate 15, pedal 15 are located between two slide bars 602, by the way that pedal 15 is arranged so that teacher it is more convenient pass through pedal
15 step on downwards connecting rod 14, and the top of slide bar 602 is fixedly connected on the front side of 604 lower surface of moving lever by traction rope 603,
By be arranged traction rope 603, by be arranged traction rope 603 so that slide bar 602 it is more flexible by traction rope 603 to
The lower front side for pulling 604 lower surface of moving lever, moving lever is fixedly connected with fourth bearing 607 in the middle part of 604 upper surface, by setting
Fourth bearing 607 is set, so that the movement of moving lever 604 is more stable, the inner surface of fourth bearing 607 is socketed with third and turns
Axis 606, the left end of third shaft 606 are fixedly connected on the right side of riser 17, the rear side and pulley of 604 upper surface of moving lever
608 bottom end overlap joint, by the way that pulley 608 is arranged, by the way that pulley 608 is arranged, so that spring 6052 more smoothly passes over
Pulley 608 pushes downwards the rear side of 604 upper surface of moving lever, and the top of pulley 608 is fixedly connected on by telescopic device 605
The lower surface of fixed board 611, telescopic device 605 include telescopic rod 6051 and the spring 6052 for being socketed in 6051 outer surface of telescopic rod,
By the way that telescopic rod 6051 is arranged, to ensure that the stability of pulley 608, simultaneous retractable bar 6051 also ensures that spring 6052 is stretched
Stability when contracting, the top of pulley 608 are fixedly connected on the following table of fixed plate 611 by telescopic rod 6051 and spring 6052
Face, by the way that spring 6052 is arranged, after regulating the angle of display screen 4, teacher no longer steps on pedal 15, in spring 6052
Under elastic force effect, spring 6052 pushes downwards the rear side of 604 upper surface of moving lever, the rear end band of moving lever 604 by pulley 608
Dynamic fixture block 609 is moved downward around third shaft 606, and fixture block 609 is connected to again in card slot 12, so that turntable 11 no longer rotates,
To ensure that display screen 4 no longer rotates, the left side of fixed plate 611 is fixedly connected on the right side of riser 17, moving lever 604
One end far from traction rope 603 is fixedly connected with fixture block 609, and fixture block 609 is connected to card slot 12 far from one end of moving lever 604
It is interior.
In use, teacher steps on downwards pedal 15 with foot when teacher needs to adjust the angle of display screen 4, pedal 15 is logical
It crosses connecting rod 14 to move downward with moving slide-bar 602, before slide bar 602 pulls downward on 604 lower surface of moving lever by traction rope 603
The rear end of side, moving lever 604 drives fixture block 609 to move upwards around third shaft 606, and fixture block 609 is no longer stuck in card slot 12, this
When spring 6052 and telescopic rod 6051 be in compressive state, teacher rotates turntable 11 by handle 13, and turntable 11 passes through second turn
Axis 8 drives second bevel gear 7 to rotate, and second bevel gear 7 engages first bevel gear 3 and rotates, and first bevel gear 3 passes through first rotating shaft
The rotation of 52 driving display screens 4, after regulating the angle of display screen 4, teacher no longer steps on pedal 15, in the bullet of spring 6052
Under power effect, spring 6052 pushes downwards the rear side of 604 upper surface of moving lever by pulley 608, and the rear end of moving lever 604 drives
Fixture block 609 is moved downward around third shaft 606, and fixture block 609 is connected to again in card slot 12, so that turntable 11 no longer rotates, from
And ensure that display screen 4 no longer rotates, when the rear end of moving lever 604 moves upwards, the front end of moving lever 604 passes through traction rope
603 and slide bar 602 drive connecting rod 14 and pedal 15 to move upwards so that connecting rod 14 and pedal 15 are restored to original position
It sets.
It can to sum up obtain, 1, the computer network teaching device, when teacher needs to adjust the angle of display screen 4, Lao Shiyong
Foot steps on downwards pedal 15, and traction rope 603 pulls downward on the front side of 604 lower surface of moving lever, and the rear end of moving lever 604 drives card
Block 609 moves upwards, and fixture block 609 is no longer stuck in card slot 12, and teacher rotates turntable 11 by handle 13 at this time, and turntable 11 passes through
Second shaft 8 drives second bevel gear 7 to rotate, and second bevel gear 7 engages first bevel gear 3 and rotates, and first bevel gear 3 passes through the
The rotation of one shaft, 52 driving display screen 4, after regulating the angle of display screen 4, teacher no longer steps on pedal 15, in spring
Under 6052 elastic force effect, spring 6052 pushes downwards the rear side of 604 upper surface of moving lever by pulley 608, so that fixture block 609
Again it is connected in card slot 12, so that turntable 11 no longer rotates, so that display screen 4 no longer rotates, the tune of 4 angle of display screen
Section does not use motor drive, to save electric energy, manually adjusts the rotation angle of display screen 4, so that display screen 4
Rotation is easier to control, and the rotation angle for avoiding display screen 4 is too big or too small, is adjusted again to not have to teacher,
The time for saving teacher brings conveniently to teacher.
2, the computer network teaching device, by the way that U-board 2 and first bearing 51 is arranged, so that first rotating shaft 52,
The rotation of first bevel gear 3 and display screen 4 is more stable, while but also first bevel gear 3 is more stable to bore tooth with second
Wheel 7 is meshed, by the way that handle 13 is arranged, so that teacher is more convenient to rotate turntable 11 by handle 13, to realize
The adjusting of 4 angle of display screen.
3, computer network teaching device, by the way that pulley 608 is arranged, so that spring 6052 more smoothly passes over
Pulley 608 pushes downwards the rear side of 604 upper surface of moving lever, by the way that traction rope 603 is arranged, so that slide bar 602 is cleverer
The front side that 604 lower surface of moving lever is pulled downward on by traction rope 603 living, and structure of the invention is compact, design is rationally, practical
Property is strong.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (6)
1. a kind of computer network teaching device, including bottom plate (1), it is characterised in that: the upper surface of the bottom plate (1) is fixed to be connected
It is connected to U-board (2), the upper surface of the U-board (2) is connected with rotating device (5), and the top of the rotating device (5) is fixed
It is connected with display screen (4), the outer surface of the rotating device (5) is connected with first bevel gear (3), the side of the U-board (2)
It is connected with second bearing (9), the inner surface of the second bearing (9) is socketed with the second shaft (8), second shaft (8)
Outer surface is connected with second bevel gear (7), and the second bevel gear (7) is meshed with first bevel gear (3), second shaft
(8) outer surface is socketed with 3rd bearing (10), and the 3rd bearing (10) is connected to the left side of riser (17), and described second
Bevel gear (7) is located between second bearing (9) and 3rd bearing (10), and the right end of second shaft (8), which is fixedly connected with, to be turned
Disk (11) offers several card slots (12) in the outer rim of the turntable (11), and the right side of the riser (17) is fixedly connected with
Two gripping mechanisms (6), the turntable (11) are located between two gripping mechanisms (6)；
The gripping mechanism (6) includes fixed link (610), and the right side of the riser (17) connects by the way that fixed link (610) are fixed
It is connected to sliding sleeve (601), the inner surface of the sliding sleeve (601) is socketed with slide bar (602), and the bottom end of two slide bars (602) is equal
It is fixedly connected on the upper surface of connecting rod (14), the top of the slide bar (602) is fixedly connected on movement by traction rope (603)
The front side of bar (604) lower surface is fixedly connected with fourth bearing (607) in the middle part of moving lever (604) upper surface, described
The inner surface of four bearings (607) is socketed with third shaft (606), and the left end of the third shaft (606) is fixedly connected on riser
(17) right side, the rear side of moving lever (604) upper surface and the bottom end of pulley (608) overlap, the pulley (608)
Top is fixedly connected on the lower surface of fixed plate (611) by telescopic device (605), and the left side of the fixed plate (611) is solid
Surely it is connected to the right side of riser (17), the moving lever (604) is fixedly connected with fixture block far from the one end of traction rope (603)
(609), the fixture block (609) is connected in card slot (12) far from the one end of moving lever (604).
2. a kind of computer network teaching device according to claim 1, it is characterised in that: the right side of the turntable (11)
Face is fixedly connected with handle (13), and the upper surface of the connecting rod (14) is fixedly connected with pedal (15).
3. a kind of computer network teaching device according to claim 1, it is characterised in that: rotating device (5) packet
It includes first bearing (51), the first bearing (51) is connected to the upper surface of U-board (2), the interior table of the first bearing (51)
Surface cover is connected to first rotating shaft (52), and the first bevel gear (3) is connected to the outer surface of first rotating shaft (52), the first rotating shaft
(52) top is fixedly connected with the lower surface of display screen (4).
4. a kind of computer network teaching device according to claim 1, it is characterised in that: the telescopic device (605)
Including telescopic rod (6051) and it is socketed in the spring (6052) of telescopic rod (6051) outer surface, the top of the pulley (608) is logical
It crosses telescopic rod (6051) and spring (6052) is fixedly connected on the lower surface of fixed plate (611).
5. a kind of computer network teaching device according to claim 1, it is characterised in that: the following table of the bottom plate (1)
Face is fixedly connected with supporting leg (16), and the shape of the supporting leg (16) is trapezoidal.
6. a kind of computer network teaching device according to claim 5, it is characterised in that: the number of the supporting leg (16)
Amount is four, and four supporting legs (16) are located at the four corners of bottom plate (1) lower surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711357203.6A CN109935111A (en) | 2017-12-16 | 2017-12-16 | A kind of computer network teaching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711357203.6A CN109935111A (en) | 2017-12-16 | 2017-12-16 | A kind of computer network teaching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109935111A true CN109935111A (en) | 2019-06-25 |
Family
ID=66981477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711357203.6A Pending CN109935111A (en) | 2017-12-16 | 2017-12-16 | A kind of computer network teaching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109935111A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112460428A (en) * | 2020-11-24 | 2021-03-09 | 李文江 | Hidden and simple operation's electronic screen for classroom |
-
2017
- 2017-12-16 CN CN201711357203.6A patent/CN109935111A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112460428A (en) * | 2020-11-24 | 2021-03-09 | 李文江 | Hidden and simple operation's electronic screen for classroom |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110120162B (en) | Korean teaching shows teaching aid that uses | |
| CN206579347U (en) | A kind of novel English teaching equipment | |
| CN107154176A (en) | A kind of multimedia teaching facility for being capable of comprehensive displaying | |
| CN106683560A (en) | Multifunctional hinge four-rod mechanism experimental platform | |
| CN108294486A (en) | Think political affairs classroom instruction auxiliary device | |
| CN111145618A (en) | Mechanical teaching aid integrating multiple motion mechanisms | |
| CN206320488U (en) | A kind of computer teaching display screen adjustment structure | |
| CN111870031A (en) | Intelligent teaching system for ideological and political education | |
| CN109935111A (en) | A kind of computer network teaching device | |
| CN113425130A (en) | A diversified display device for building relates to outward appearance picture | |
| CN214123237U (en) | Teaching display board for software technology development | |
| CN107599688B (en) | Blackboard is adjusted in multi-angle | |
| CN208367969U (en) | A kind of polyhedron rotary education tool | |
| CN109882696B (en) | English teaching multimedia device | |
| CN207571912U (en) | A kind of intelligent mathematical teaching displaying device convenient for adjusting | |
| CN213365941U (en) | Intermittent indexing device driven by air cylinder | |
| CN204029257U (en) | A kind of mechanism kinematic demo platform | |
| CN211124411U (en) | Education training system | |
| CN107993526A (en) | Mathematical education interaction device is used in one kind teaching | |
| CN209895652U (en) | ERP show sand table for economics | |
| CN212789694U (en) | Basketball training device for physical training | |
| CN210865347U (en) | Comprehensive teaching and training device for mechanical transmission mechanism | |
| CN107713435A (en) | The teaching appliance of multidirectional regulation | |
| CN206819592U (en) | Visual communication teaching aid | |
| CN209199438U (en) | A kind of chemical bond rupture for quantum chemistry and formation apparatus for demonstrating |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190625 |
|
| WD01 | Invention patent application deemed withdrawn after publication |