CN107839379A - The practical small blackboard of one kind teaching - Google Patents
The practical small blackboard of one kind teaching Download PDFInfo
- Publication number
- CN107839379A CN107839379A CN201710947450.5A CN201710947450A CN107839379A CN 107839379 A CN107839379 A CN 107839379A CN 201710947450 A CN201710947450 A CN 201710947450A CN 107839379 A CN107839379 A CN 107839379A
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- CN
- China
- Prior art keywords
- bearing seat
- blackboard
- support
- slide rail
- nut
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- 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.)
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Classifications
-
- 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
-
- 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
-
- 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
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- Drawing Aids And Blackboards (AREA)
Abstract
The present invention relates to a kind of blackboard, more particularly to a kind of practical small blackboard of teaching.It can be moved freely the technical problem to be solved in the present invention is to provide one kind, automatic blackboard cleaning and can well collect chalk dust teaching with practical small blackboard.In order to solve the above-mentioned technical problem, the invention provides the practical small blackboard of such a teaching, support etc. is included;Base top is provided with support, is sequentially provided with erasing mechanism, blackboard and collection device in support between the wall of left and right from top to bottom.Invention achieves can move freely, automatic blackboard cleaning and can well collect the effect of chalk dust, wheel causes blackboard not being confined to a place, teacher can be free to travel to convenient place, wiping board moves left and right under the cooperation of the first nut and screw mandrel, it is possible thereby to black automatically, also collection frame can collect chalk dust, cleaning can also be unloaded, it is convenient and hygienic.
Description
Technical field
The present invention relates to a kind of blackboard, more particularly to a kind of practical small blackboard of teaching.
Background technology
Teaching is the distinctive personnel training activity of a kind of mankind that the religion of teacher and student are formed.Pass through this work
Dynamic, teacher is purposeful, the study of planned and organized ground guiding student and grasp cultural and technical knowledge and technical ability, promotion student are plain
Matter improves, and them is turned into the people required for society.
Small blackboard, to be mainly used for family learning, every regular instrument that match need to be write, and constituent parts are used for publicizing
Purposes.Small blackboard in all audio-visual aids, to count small blackboard is most common, be most teaching flexibly tool one of them.
In school, blackboard is all integrally fixed on wall used in teacher, and in actual use, this blackboard is present not
The shortcomings that moving freely, being unable to automatic blackboard cleaning and chalk dust can not be collected well, therefore need a kind of energy of research and development badly freely
It is mobile, automatic blackboard cleaning and can well collect the practical small blackboard of the teaching of chalk dust.
The content of the invention
(1)Technical problems to be solved
The present invention can not move freely to overcome existing blackboard presence, be unable to automatic blackboard cleaning and can not collect powder well
The shortcomings that pen is grey, can be moved freely, can automatic blackboard cleaning and can be well the technical problem to be solved in the present invention is to provide one kind
Collect the practical small blackboard of chalk dust teaching.
(2)Technical scheme
In order to solve the above-mentioned technical problem, the invention provides such a teaching with practical small blackboard, support, black is included
Plate, base, erasing mechanism and collection device, base top are provided with support, are sequentially provided with from top to bottom between the wall of left and right in support
Wipe mechanism, blackboard and collection device.
Preferably, erasing mechanism includes motor, first bearing seat, the first nut, screw mandrel, the first slide rail, second bearing
Seat, the first sliding block, head rod and wiping board, the first slide rail are provided between two walls of left and right in support, the first slide rail is located at blackboard
Lower section, slidingtype is connected with the first sliding block on the first slide rail, and support inner top is provided with first bearing seat and second bearing seat, and first
Bearing seat is provided with motor on the upside of second bearing seat left, support inner left wall, is installed in first bearing seat and second bearing seat
There are screw mandrel, screw mandrel left end and motor connection, screw mandrel is provided with the first nut, and screw mandrel and the first nut coordinate, the first nut bottom
Provided with head rod, head rod lower end is connected with the first slider top, is provided with wiping board on rear side of head rod, after wiping board
Side contacts with blackboard.
Preferably, collection device includes 3rd bearing seat, U-shaped block, screw, the first contiguous block, collection frame, rocking bar,
Two nuts and rotating shaft, two walls of left and right are equipped with 3rd bearing seat in support, are provided with rotating shaft on 3rd bearing seat, inner side in rotating shaft
Provided with U-shaped block, the first screwed hole is provided with U-shaped block, the first contiguous block is placed with U-shaped block, second is provided with the first contiguous block
Screwed hole, the first screwed hole is corresponding with the second screwed hole, is equipped with screw in the first screwed hole and the second screwed hole, under screw
End is provided with the second nut, and screw and the second nut coordinate, and the rotating shaft right-hand member of right is provided with rocking bar.
Preferably, flat belt, the first belt pulley, housing, the second connecting rod, the second slide rail, the second sliding block, are also included
Two contiguous blocks, rack, the 3rd slide rail, gear, the 3rd sliding block, the 3rd contiguous block, fourth bearing seat, the second belt pulley, bull stick and
First spring, rocking bar are provided with the first belt pulley, and the 3rd contiguous block is provided with the right side of base top, tooth is provided with the top of the 3rd contiguous block
Bar, support left and right sides lower end are equipped with housing, and right housing right wall is provided with fourth bearing seat, is provided with and turns on fourth bearing seat
Bar, bull stick right-hand member are provided with the second belt pulley, flat belt are wound with the second belt pulley and the first belt pulley, and bull stick left end is provided with tooth
Wheel, gear be located in front of rack, and wheel and rack engages, and right housing rear is provided with the 3rd slide rail, slidingtype on the 3rd slide rail
The 3rd sliding block is connected with, the 3rd sliding block antetheca is connected with rack rear wall, is provided with groove on the left of base top, and chassis left side is provided with the
Two contiguous blocks, the second contiguous block in the grooves between top, the second connecting rod is provided with the top of the second contiguous block, in the housing of left
Rear wall is provided with the second slide rail, and slidingtype is connected with the second sliding block on the second slide rail, after the antetheca of the second sliding block and the second connecting rod
Side is connected, and the first spring is connected between the housing bottom and groove inner bottom part of left.
Preferably, framework, Graphic Panel, second spring, transparent bag, the 4th slide rail, Four-slider, drawstring, circle are also included
Ring and fix bar, support inner top are provided with second spring, are arranged with the 4th slide rail at left and right sides of support, are slided on the 4th slide rail
Formula is connected with Four-slider, and Graphic Panel is provided between Four-slider, is connected at the top of Graphic Panel with second spring lower end, before Graphic Panel
Side is provided with transparent bag, and Four-slider bottom is provided with drawstring, and drawstring end is connected with annulus, fix bar is provided with left and right sides of support,
Annulus coordinates with fix bar.
Preferably, cover plate, chalk holder and dividing plate are also included, support left wall is provided with chalk holder, dividing plate is provided with chalk holder,
Rotary type is connected with cover plate at the top of chalk holder.
Preferably, kelly, wheel and wheelhouse portions are also included, base bottom is symmetrical to be provided with wheel, is set above wheel
There are wheelhouse portions, kelly is provided with the outside of wheel.
Preferably, the material of support is stainless steel.
Preferably, the material of gear is Q235 steel.
Operation principle:When teacher needs to be write, erasing mechanism can be started, erasing mechanism moves left and right, can be with
Original font on small blackboard is wiped clean, dust can be produced during erasing the board, dust is fallen down, and concentrates on collection device
Interior, when have collected a large amount of dusts in collection device, dust can be disposed by rotating collection device.
Because erasing mechanism include motor, first bearing seat, the first nut, screw mandrel, the first slide rail, second bearing seat,
First sliding block, head rod and wiping board, the first slide rail are provided between two walls of left and right in support, the first slide rail is located under blackboard
Square, slidingtype is connected with the first sliding block on the first slide rail, and support inner top is provided with first bearing seat and second bearing seat, first axle
Bearing is located at second bearing seat left, is provided with motor on the upside of support inner left wall, is provided with first bearing seat and second bearing seat
Screw mandrel, screw mandrel left end and motor connection, screw mandrel are provided with the first nut, and screw mandrel and the first nut coordinate, and the first nut bottom is set
There is head rod, head rod lower end is connected with the first slider top, and wiping board, wiping board rear side are provided with rear side of head rod
Contacted with blackboard, so when teacher needs writing on the blackboard, motor can be started, motor drives screw mandrel rotates so that the first nut moves
Dynamic, the positive and negative rotation of motor can cause the first nut to move left and right, it is possible thereby to so that wiping board moves left and right, wiping board is wiped small
Writing on the blackboard on blackboard, teacher can the new contents of writing on the blackboard again.
Because collection device includes 3rd bearing seat, U-shaped block, screw, the first contiguous block, collection frame, rocking bar, the second spiral shell
Female and rotating shaft, two walls of the interior left and right of support are equipped with 3rd bearing seat, rotating shaft are provided with 3rd bearing seat, and inner side is provided with rotating shaft
U-shaped block, the first screwed hole is provided with U-shaped block, the first contiguous block is placed with U-shaped block, the second screw thread is provided with the first contiguous block
Hole, the first screwed hole is corresponding with the second screwed hole, and screw is equipped with the first screwed hole and the second screwed hole, and screw lower end is set
There is the second nut, screw and the second nut coordinate, and the rotating shaft right-hand member of right is provided with rocking bar, so when eraser board eraser small blackboard, powder
Pen ash is fallen into collection frame, it is necessary to when clearing up the dust in collection frame, and teacher is first placed on dustbin immediately below collection frame, is rotated
Rocking bar so that collection frame topples over dust, if still remaining more dust inside collection frame, teacher can screw out the second nut, take
Lower screw so that collection frame is not fixed, and is easy to people to remove collection frame and is cleaned, and after cleaning and drying, teacher is collection
Frame is reattached to original position.
Because also include flat belt, the first belt pulley, housing, the second connecting rod, the second slide rail, the second sliding block, second
Contiguous block, rack, the 3rd slide rail, gear, the 3rd sliding block, the 3rd contiguous block, fourth bearing seat, the second belt pulley, bull stick and
One spring, rocking bar are provided with the first belt pulley, and the 3rd contiguous block is provided with the right side of base top, tooth is provided with the top of the 3rd contiguous block
Bar, support left and right sides lower end are equipped with housing, and right housing right wall is provided with fourth bearing seat, is provided with and turns on fourth bearing seat
Bar, bull stick right-hand member are provided with the second belt pulley, flat belt are wound with the second belt pulley and the first belt pulley, and bull stick left end is provided with tooth
Wheel, gear be located in front of rack, and wheel and rack engages, and right housing rear is provided with the 3rd slide rail, slidingtype on the 3rd slide rail
The 3rd sliding block is connected with, the 3rd sliding block antetheca is connected with rack rear wall, is provided with groove on the left of base top, and chassis left side is provided with the
Two contiguous blocks, the second contiguous block in the grooves between top, the second connecting rod is provided with the top of the second contiguous block, in the housing of left
Rear wall is provided with the second slide rail, and slidingtype is connected with the second sliding block on the second slide rail, after the antetheca of the second sliding block and the second connecting rod
Side is connected, and the first spring is connected between the housing bottom and groove inner bottom part of left, thus when to adjust the height of blackboard with
When more facilitating the teaching in classroom, shaking rocking bar can move up and down along reversion with carry-over bar, so as to be carried out to the height of blackboard
Adjustment up and down, when being adjusted to correct position, stop operating rocking bar, and the elastic force of the first spring plays branch to the housing in left side
Support effect.
Because also include framework, Graphic Panel, second spring, transparent bag, the 4th slide rail, Four-slider, drawstring, annulus and
Fix bar, support inner top are provided with second spring, and the 4th slide rail is arranged with left and right sides of support, and slidingtype connects on the 4th slide rail
Four-slider is connected to, Graphic Panel is provided between Four-slider, is connected at the top of Graphic Panel with second spring lower end, is set on front side of Graphic Panel
There is transparent bag, Four-slider bottom is provided with drawstring, and drawstring end is connected with annulus, fix bar, annulus are provided with left and right sides of support
Coordinate with fix bar, so when teacher needs to show teaching card, hold annulus and be hung in fix bar, be easy to teacher by card
It is placed in transparent bag, card can be now placed in transparent bag, then pull out annulus so that Graphic Panel is in the presence of elastic force
Reset, be easy to classmates to learn.
Because also including cover plate, chalk holder and dividing plate, support left wall is provided with chalk holder, and dividing plate, powder are provided with chalk holder
Rotary type is connected with cover plate at the top of pencil box, so when teacher needs writing on the blackboard, teacher can turn on cover plate, be taken out of chalk holder
Go out chalk, dividing plate can more facilitate teacher to take chalk.
Because also including kelly, wheel and wheelhouse portions, base bottom is symmetrical to be provided with wheel, and car is provided with above wheel
Wheel cover, wheel outside is provided with kelly, so small blackboard can be moved to conjunction by the setting of wheel in order to the movement of the device, teacher
Right position postpones, and can step on kelly, be fixed wheel.
Because the material of support is stainless steel, stainless steel is not easy to get rusty, and can extend the service life of the device.
Because the material of gear is Q235 steel, the high Q235 of combination property is more wear-resisting, can extend the device
Service life.
In order to clearly demonstrate the operation principle of the present apparatus, do not have the guiding dress of picture feed screw nut in Figure of description
Put(The guider of feed screw nut is generally sliding-rail sliding either linear guides), in the real work of the present apparatus, screw mandrel
The guider of nut is to must have, and otherwise screw mandrel rotates, and nut also can be rotated and then, and the guider of feed screw nut is just
It is to follow screw mandrel to rotate for limiting nut, forces axial movement of the nut along screw mandrel, because the technical staff of mechanical field
See when having feed screw nut's device, just necessarily know in the actual fabrication present apparatus, add the guider of upper screw rod nut, add
Add the guider of feed screw nut not need mechanical field personnel to pay performing creative labour to can be achieved, hereby illustrate.
The control mode of the present invention is automatically controlled by controller, the skill that the control circuit of controller passes through this area
Art personnel simple programming can be achieved, and belong to the common knowledge of this area, and the present invention is mainly used to protect mechanical device, institute
Control mode is not explained with the present invention to connect with circuit.
(3)Beneficial effect
Invention achieves that can move freely, automatic blackboard cleaning and can well collect the effect of chalk dust, wheel causes black
Plate be not confined to a place, and teacher can be free to travel to convenient place, cooperation of the wiping board in the first nut and screw mandrel
Under move left and right, it is possible thereby to black automatically, also collection frame can collect chalk dust, can also unload cleaning, convenient to defend again
It is raw.
Brief description of the drawings
Fig. 1 is the main structure diagram of the present invention.
Fig. 2 is the first part main structure diagram of the present invention.
Fig. 3 is second of part main structure diagram of the present invention.
Fig. 4 is the third part main structure diagram of the present invention.
Fig. 5 is the 4th kind of part main structure diagram of the present invention.
Fig. 6 is the 5th kind of part main structure diagram of the present invention.
Fig. 7 is the 6th kind of part main structure diagram of the present invention.
Mark in accompanying drawing for:1- supports, 2- blackboards, 3- bases, 4- erasings mechanism, 40- motors, 41- first bearing seats,
The nuts of 42- first, 43- screw mandrels, the slide rails of 44- first, 45- second bearing seats, the sliding blocks of 46- first, 47- head rods, 48- are wiped
Plate, 5- collection devices, 50- 3rd bearing seats, 51-U shape blocks, 52- screws, the contiguous blocks of 53- first, 54- collection frames, 55- first
Screwed hole, 56- rocking bars, the nuts of 57- second, the screwed holes of 58- second, 59- rotating shafts, 6- flat belts, the belt pulleys of 7- first, 8- shells
Body, the connecting rods of 9- second, the slide rails of 10- second, the sliding blocks of 11- second, the contiguous blocks of 12- second, 13- racks, the slide rails of 14- the 3rd, 15-
Gear, the sliding blocks of 16- the 3rd, the contiguous blocks of 17- the 3rd, 18- fourth bearing seats, the belt pulleys of 19- second, 20- bull sticks, the bullets of 21- first
Spring, 22- grooves, 23- frameworks, 24- Graphic Panels, 25- second springs, 26- transparent bags, the slide rails of 27- the 4th, 28- Four-sliders,
29- drawstrings, 30- annulus, 31- fix bars, 32- cover plates, 33- chalk holders, 34- dividing plates, 35- kellies, 36- wheels, 37- wheels
Cover.
Embodiment
The present invention is further illustrated with reference to the accompanying drawings and examples.
Embodiment 1
The practical small blackboard of one kind teaching, as shown in figs. 1-7, include support 1, blackboard 2, base 3, erasing mechanism 4 and receive
Acquisition means 5, the top of base 3 are provided with support 1, are sequentially provided with from top to bottom between the wall of left and right in support 1 and wipe mechanism 4, the and of blackboard 2
Collection device 5.
Embodiment 2
The practical small blackboard of one kind teaching, as shown in figs. 1-7, include support 1, blackboard 2, base 3, erasing mechanism 4 and receive
Acquisition means 5, the top of base 3 are provided with support 1, are sequentially provided with from top to bottom between the wall of left and right in support 1 and wipe mechanism 4, the and of blackboard 2
Collection device 5.
Erasing mechanism 4 includes motor 40, first bearing seat 41, the first nut 42, screw mandrel 43, the first slide rail 44, second
Bearing block 45, the first sliding block 46, head rod 47 and wiping board 48, the first slide rail 44 is provided between two walls of left and right in support 1, the
One slide rail 44 is located at the lower section of blackboard 2, and slidingtype is connected with the first sliding block 46 on the first slide rail 44, and the inner top of support 1 is provided with first
Bearing block 41 and second bearing seat 45, first bearing seat 41 are located at the left of second bearing seat 45, electricity are provided with the upside of the inner left wall of support 1
Screw mandrel 43 is installed, the left end of screw mandrel 43 is connected with motor 40, on screw mandrel 43 in machine 40, first bearing seat 41 and second bearing seat 45
Provided with the first nut 42, screw mandrel 43 coordinates with the first nut 42, and the bottom of the first nut 42 is provided with head rod 47, the first connection
The lower end of bar 47 is connected with the top of the first sliding block 46, and the rear side of head rod 47 is provided with wiping board 48, and the rear side of wiping board 48 connects with blackboard 2
Touch.
Embodiment 3
The practical small blackboard of one kind teaching, as shown in figs. 1-7, include support 1, blackboard 2, base 3, erasing mechanism 4 and receive
Acquisition means 5, the top of base 3 are provided with support 1, are sequentially provided with from top to bottom between the wall of left and right in support 1 and wipe mechanism 4, the and of blackboard 2
Collection device 5.
Erasing mechanism 4 includes motor 40, first bearing seat 41, the first nut 42, screw mandrel 43, the first slide rail 44, second
Bearing block 45, the first sliding block 46, head rod 47 and wiping board 48, the first slide rail 44 is provided between two walls of left and right in support 1, the
One slide rail 44 is located at the lower section of blackboard 2, and slidingtype is connected with the first sliding block 46 on the first slide rail 44, and the inner top of support 1 is provided with first
Bearing block 41 and second bearing seat 45, first bearing seat 41 are located at the left of second bearing seat 45, electricity are provided with the upside of the inner left wall of support 1
Screw mandrel 43 is installed, the left end of screw mandrel 43 is connected with motor 40, on screw mandrel 43 in machine 40, first bearing seat 41 and second bearing seat 45
Provided with the first nut 42, screw mandrel 43 coordinates with the first nut 42, and the bottom of the first nut 42 is provided with head rod 47, the first connection
The lower end of bar 47 is connected with the top of the first sliding block 46, and the rear side of head rod 47 is provided with wiping board 48, and the rear side of wiping board 48 connects with blackboard 2
Touch.
Collection device 5 includes 3rd bearing seat 50, U-shaped block 51, screw 52, the first contiguous block 53, collection frame 54, rocking bar
56th, the second nut 57 and rotating shaft 59, two walls of the interior left and right of support 1 are equipped with 3rd bearing seat 50, are provided with 3rd bearing seat 50
Rotating shaft 59, inner side is provided with U-shaped block 51 in rotating shaft 59, and the first screwed hole 55 is provided with U-shaped block 51, first is placed with U-shaped block 51
Contiguous block 53, the second screwed hole 58 is provided with the first contiguous block 53, the first screwed hole 55 is corresponding with the second screwed hole 58, and first
Screw 52 is equipped with the screwed hole 58 of screwed hole 55 and second, the lower end of screw 52 is provided with the second nut 57, the spiral shell of screw 52 and second
Mother 57 coordinates, and the right-hand member of rotating shaft 59 of right is provided with rocking bar 56.
Embodiment 4
The practical small blackboard of one kind teaching, as shown in figs. 1-7, include support 1, blackboard 2, base 3, erasing mechanism 4 and receive
Acquisition means 5, the top of base 3 are provided with support 1, are sequentially provided with from top to bottom between the wall of left and right in support 1 and wipe mechanism 4, the and of blackboard 2
Collection device 5.
Erasing mechanism 4 includes motor 40, first bearing seat 41, the first nut 42, screw mandrel 43, the first slide rail 44, second
Bearing block 45, the first sliding block 46, head rod 47 and wiping board 48, the first slide rail 44 is provided between two walls of left and right in support 1, the
One slide rail 44 is located at the lower section of blackboard 2, and slidingtype is connected with the first sliding block 46 on the first slide rail 44, and the inner top of support 1 is provided with first
Bearing block 41 and second bearing seat 45, first bearing seat 41 are located at the left of second bearing seat 45, electricity are provided with the upside of the inner left wall of support 1
Screw mandrel 43 is installed, the left end of screw mandrel 43 is connected with motor 40, on screw mandrel 43 in machine 40, first bearing seat 41 and second bearing seat 45
Provided with the first nut 42, screw mandrel 43 coordinates with the first nut 42, and the bottom of the first nut 42 is provided with head rod 47, the first connection
The lower end of bar 47 is connected with the top of the first sliding block 46, and the rear side of head rod 47 is provided with wiping board 48, and the rear side of wiping board 48 connects with blackboard 2
Touch.
Collection device 5 includes 3rd bearing seat 50, U-shaped block 51, screw 52, the first contiguous block 53, collection frame 54, rocking bar
56th, the second nut 57 and rotating shaft 59, two walls of the interior left and right of support 1 are equipped with 3rd bearing seat 50, are provided with 3rd bearing seat 50
Rotating shaft 59, inner side is provided with U-shaped block 51 in rotating shaft 59, and the first screwed hole 55 is provided with U-shaped block 51, first is placed with U-shaped block 51
Contiguous block 53, the second screwed hole 58 is provided with the first contiguous block 53, the first screwed hole 55 is corresponding with the second screwed hole 58, and first
Screw 52 is equipped with the screwed hole 58 of screwed hole 55 and second, the lower end of screw 52 is provided with the second nut 57, the spiral shell of screw 52 and second
Mother 57 coordinates, and the right-hand member of rotating shaft 59 of right is provided with rocking bar 56.
Also include flat belt 6, the first belt pulley 7, housing 8, the second connecting rod 9, the second slide rail 10, the second sliding block 11,
Second contiguous block 12, rack 13, the 3rd slide rail 14, gear 15, the 3rd sliding block 16, the 3rd contiguous block 17, fourth bearing seat 18,
Two belt pulleys 19, the spring 21 of bull stick 20 and first, rocking bar 56 are provided with the first belt pulley 7, and the top right side of base 3 is provided with the 3rd and connected
Block 17 is connect, the top of the 3rd contiguous block 17 is provided with rack 13, and the left and right sides lower end of support 1 is equipped with housing 8, the right wall of right housing 8
Provided with fourth bearing seat 18, bull stick 20 is installed on fourth bearing seat 18, the right-hand member of bull stick 20 is provided with the second belt pulley 19, the second skin
Flat belt 6 is wound with the belt pulley 7 of belt wheel 19 and first, the left end of bull stick 20 is provided with gear 15, and gear 15 is located at the front of rack 13, tooth
Wheel 15 engages with rack 13, and the rear wall of right housing 8 is provided with the 3rd slide rail 14, and slidingtype is connected with the 3rd sliding block on the 3rd slide rail 14
16, the antetheca of the 3rd sliding block 16 is connected with the rear wall of rack 13, and the top left side of base 3 is provided with groove 22, and the left side of base 3 is provided with second and connected
Block 12 is connect, the second contiguous block 12 is located at the middle upper part of groove 22, and the top of the second contiguous block 12 is provided with the second connecting rod 9, left
Rear wall is provided with the second slide rail 10 in housing 8, and slidingtype is connected with the second sliding block 11, the antetheca of the second sliding block 11 on the second slide rail 10
It is connected with the rear side of the second connecting rod 9, the first spring 21 is connected between the bottom of housing 8 of left and the inner bottom part of groove 22.
Also include framework 23, Graphic Panel 24, second spring 25, transparent bag 26, the 4th slide rail 27, Four-slider 28, drawing
Rope 29, annulus 30 and fix bar 31, the inner top of support 1 are provided with second spring 25, and the left and right sides of support 1 is arranged with the 4th slide rail
27, slidingtype is connected with Four-slider 28 on the 4th slide rail 27, and Graphic Panel 24, the top of Graphic Panel 24 are provided between Four-slider 28
It is connected with the lower end of second spring 25, the front side of Graphic Panel 24 is provided with transparent bag 26, and the bottom of Four-slider 28 is provided with drawstring 29, drawstring 29
End is connected with annulus 30, and the left and right sides of support 1 is provided with fix bar 31, and annulus 30 coordinates with fix bar 31.
Also include cover plate 32, chalk holder 33 and dividing plate 34, the left wall of support 1 is provided with chalk holder 33, is provided with chalk holder 33
Dividing plate 34, the top rotary type of chalk holder 33 are connected with cover plate 32.
Also include kelly 35, wheel 36 and wheelhouse portions 37, the bottom of base 3 is symmetrical to be provided with wheel 36, on wheel 36
Side is provided with wheelhouse portions 37, and the outside of wheel 36 is provided with kelly 35.
The material of support 1 is stainless steel.
The material of gear 15 is Q235 steel.
Operation principle:When teacher needs to be write, erasing mechanism 4 can be started, erasing mechanism 4 moves left and right, can
So that original font on small blackboard 2 is wiped clean, dust can be produced during 2 by erasing the board, and dust is fallen down, and concentrate on collection dress
Put in 5, when have collected a large amount of dusts in collection device 5, dust can be disposed by rotating collection device 5.
Because erasing mechanism 4 include motor 40, first bearing seat 41, the first nut 42, screw mandrel 43, the first slide rail 44,
Second bearing seat 45, the first sliding block 46, head rod 47 and wiping board 48, the first slide rail is provided between two walls of left and right in support 1
44, the first slide rail 44 is located at the lower section of blackboard 2, and slidingtype is connected with the first sliding block 46 on the first slide rail 44, and the inner top of support 1 is provided with
First bearing seat 41 and second bearing seat 45, first bearing seat 41 are located at the left of second bearing seat 45, set on the upside of the inner left wall of support 1
There is motor 40, screw mandrel 43 is installed in first bearing seat 41 and second bearing seat 45, the left end of screw mandrel 43 is connected with motor 40, screw mandrel
43 are provided with the first nut 42, and screw mandrel 43 coordinates with the first nut 42, and the bottom of the first nut 42 is provided with head rod 47, and first
The lower end of connecting rod 47 is connected with the top of the first sliding block 46, and the rear side of head rod 47 is provided with wiping board 48, the rear side of wiping board 48 and blackboard 2
Contact, so when teacher needs writing on the blackboard, motor 40 can be started, motor 40 drives screw mandrel 43 to rotate so that the first nut 42
Mobile, the positive and negative rotation of motor 40 can cause the first nut 42 to move left and right, it is possible thereby to so that wiping board 48 moves left and right, wipe
Plate 48 wipes the writing on the blackboard on small blackboard 2, and teacher can the new content of writing on the blackboard again.
Because collection device 5 include 3rd bearing seat 50, U-shaped block 51, screw 52, the first contiguous block 53, collection frame 54,
Rocking bar 56, the second nut 57 and rotating shaft 59, two walls of the interior left and right of support 1 are equipped with 3rd bearing seat 50, pacified on 3rd bearing seat 50
Equipped with rotating shaft 59, inner side is provided with U-shaped block 51 in rotating shaft 59, and the first screwed hole 55 is provided with U-shaped block 51, is placed with U-shaped block 51
First contiguous block 53, the second screwed hole 58 is provided with the first contiguous block 53, the first screwed hole 55 is corresponding with the second screwed hole 58,
Screw 52 is equipped with first screwed hole 55 and the second screwed hole 58, the lower end of screw 52 is provided with the second nut 57, screw 52 and
Two nuts 57 coordinate, and the right-hand member of rotating shaft 59 of right is provided with rocking bar 56, so when wiping board 48 wipes small blackboard 2, chalk dust falls into receipts
Collect in frame 54, it is necessary to when clearing up the dust in collection frame 54, teacher is first placed on dustbin immediately below collection frame 54, rotating rocker
56 so that collection frame 54 topples over dust, if still remaining more dust inside collection frame 54, teacher can screw out the second nut
57, remove screw 52 so that collection frame 54 is not fixed, and is easy to people to remove collection frame 54 and is cleaned, after cleaning and drying,
Collection frame 54 is reattached to original position by teacher.
Because also include flat belt 6, the first belt pulley 7, housing 8, the second connecting rod 9, the second slide rail 10, the second sliding block
11st, the second contiguous block 12, rack 13, the 3rd slide rail 14, gear 15, the 3rd sliding block 16, the 3rd contiguous block 17, fourth bearing seat
18th, the second belt pulley 19, the spring 21 of bull stick 20 and first, rocking bar 56 are provided with the first belt pulley 7, and the top right side of base 3 is provided with
3rd contiguous block 17, the top of the 3rd contiguous block 17 are provided with rack 13, and the left and right sides lower end of support 1 is equipped with housing 8, right housing
8 right walls are provided with fourth bearing seat 18, and bull stick 20 is provided with fourth bearing seat 18, and the right-hand member of bull stick 20 is provided with the second belt pulley 19,
Flat belt 6 is wound with second belt pulley 19 and the first belt pulley 7, the left end of bull stick 20 is provided with gear 15, and gear 15 is located at rack 13
Front, gear 15 are engaged with rack 13, and the rear wall of right housing 8 is provided with the 3rd slide rail 14, and slidingtype is connected with the 3rd slide rail 14
3rd sliding block 16, the antetheca of the 3rd sliding block 16 are connected with the rear wall of rack 13, and the top left side of base 3 is provided with groove 22, and the left side of base 3 is set
There is the second contiguous block 12, the second contiguous block 12 is located at the middle upper part of groove 22, and the top of the second contiguous block 12 is provided with the second connecting rod
9, rear wall is provided with the second slide rail 10 in the housing 8 of left, and slidingtype is connected with the second sliding block 11, the second sliding block on the second slide rail 10
11 antetheca is connected with the rear side of the second connecting rod 9, and the first spring is connected between the bottom of housing 8 of left and the inner bottom part of groove 22
21, so when the height of blackboard 2 to be adjusted is more to facilitate the teaching in classroom, shaking rocking bar 56 can be with carry-over bar 13 along reversion
Move up and down, so as to carry out adjusting up and down to the height of blackboard 2, when being adjusted to correct position, stop operating rocking bar 56 i.e.
Can, the elastic force of the first spring 21 plays support effect to the housing 8 in left side.
Because also include framework 23, Graphic Panel 24, second spring 25, transparent bag 26, the 4th slide rail 27, Four-slider
28th, drawstring 29, annulus 30 and fix bar 31, the inner top of support 1 are provided with second spring 25, and the left and right sides of support 1 is arranged with the
Four slide rails 27, slidingtype is connected with Four-slider 28 on the 4th slide rail 27, and Graphic Panel 24, Graphic Panel are provided between Four-slider 28
24 tops are connected with the lower end of second spring 25, and the front side of Graphic Panel 24 is provided with transparent bag 26, and the bottom of Four-slider 28 is provided with drawstring 29,
The end of drawstring 29 is connected with annulus 30, and the left and right sides of support 1 is provided with fix bar 31, and annulus 30 coordinates with fix bar 31, so working as
When teacher needs to show teaching card, hold annulus 30 and be hung in fix bar 31, be easy to teacher that card is placed in transparent bag 26,
Card can be now placed in transparent bag 26, then pull out annulus 30 so that Graphic Panel 24 resets in the presence of elastic force, just
Learn in classmates.
Because also including cover plate 32, chalk holder 33 and dividing plate 34, the left wall of support 1 is provided with chalk holder 33, in chalk holder 33
Provided with dividing plate 34, the top rotary type of chalk holder 33 is connected with cover plate 32, so when teacher needs writing on the blackboard, teacher can be cover plate
32 turn on, and take out chalk out of chalk holder 33, and dividing plate 34 can more facilitate teacher to take chalk.
Because also including kelly 35, wheel 36 and wheelhouse portions 37, the bottom of base 3 is symmetrical to be provided with wheel 36, wheel
36 tops are provided with wheelhouse portions 37, and the outside of wheel 36 is provided with kelly 35, thus the setting of wheel 36 can in order to the movement of the device,
After small blackboard 2 is moved to correct position by teacher, kelly 35 can be stepped on, is fixed wheel.
Because the material of support 1 is stainless steel, stainless steel is not easy to get rusty, and can extend the service life of the device.
Because the material of gear 15 is Q235 steel, the high Q235 of combination property is more wear-resisting, can extend the device
Service life.
In order to clearly demonstrate the operation principle of the present apparatus, do not have the guiding of the nut of picture screw mandrel 43 in Figure of description
Device(The guider of the nut of screw mandrel 43 is generally sliding-rail sliding either linear guides), in the real work of the present apparatus,
The guider of the nut of screw mandrel 43 is to must have, and otherwise screw mandrel 43 rotates, and nut also can be rotated and then, the nut of screw mandrel 43
Guider follows screw mandrel 43 to rotate for limiting nut, axial movement of the nut along screw mandrel 43 is forced, because mechanical
The technical staff in field is seen when having 43 nut apparatus of screw mandrel, is just necessarily known in the actual fabrication present apparatus, adds upper screw rod
The guider of 43 nuts, the guider of the addition nut of screw mandrel 43 do not need mechanical field personnel to pay performing creative labour i.e.
It can be achieved, illustrate hereby.
The control mode of the present invention is automatically controlled by controller, the skill that the control circuit of controller passes through this area
Art personnel simple programming can be achieved, and belong to the common knowledge of this area, and the present invention is mainly used to protect mechanical device, institute
Control mode is not explained with the present invention to connect with circuit.
Embodiment described above only expresses the preferred embodiment of the present invention, and its description is more specific and detailed, but simultaneously
Therefore the limitation to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art
For, without departing from the inventive concept of the premise, some deformations can also be made, improves and substitutes, these belong to this hair
Bright protection domain.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (9)
1. the practical small blackboard of one kind teaching, it is characterised in that include support(1), blackboard(2), base(3), erasing machine
Structure(4)And collection device(5), base(3)Top is provided with support(1), support(1)It is sequentially provided with from top to bottom between interior left and right wall
Wipe mechanism(4), blackboard(2)And collection device(5).
A kind of 2. practical small blackboard of teaching according to claim 1, it is characterised in that erasing mechanism(4)Include
Motor(40), first bearing seat(41), the first nut(42), screw mandrel(43), the first slide rail(44), second bearing seat(45),
One sliding block(46), head rod(47)And wiping board(48), support(1)The first slide rail is provided between two walls of interior left and right(44), the
One slide rail(44)Positioned at blackboard(2)Lower section, the first slide rail(44)Upper slidingtype is connected with the first sliding block(46), support(1)Interior top
Portion is provided with first bearing seat(41)With second bearing seat(45), first bearing seat(41)Positioned at second bearing seat(45)Left, branch
Frame(1)Motor is provided with the upside of inner left wall(40), first bearing seat(41)And second bearing seat(45)On screw mandrel is installed(43), silk
Bar(43)Left end and motor(40)Connection, screw mandrel(43)It is provided with the first nut(42), screw mandrel(43)With the first nut(42)Match somebody with somebody
Close, the first nut(42)Bottom is provided with head rod(47), head rod(47)Lower end and the first sliding block(46)Top connects
Connect, head rod(47)Rear side is provided with wiping board(48), wiping board(48)Rear side and blackboard(2)Contact.
A kind of 3. practical small blackboard of teaching according to claim 2, it is characterised in that collection device(5)Include
3rd bearing seat(50), U-shaped block(51), screw(52), the first contiguous block(53), collection frame(54), rocking bar(56), the second nut
(57)And rotating shaft(59), support(1)Two walls of interior left and right are equipped with 3rd bearing seat(50), 3rd bearing seat(50)On be provided with turn
Axle(59), rotating shaft(59)Upper inner side is provided with U-shaped block(51), U-shaped block(51)On be provided with the first screwed hole(55), U-shaped block(51)It is interior
It is placed with the first contiguous block(53), the first contiguous block(53)On be provided with the second screwed hole(58), the first screwed hole(55)With second
Screwed hole(58)It is corresponding, the first screwed hole(55)With the second screwed hole(58)Inside it is equipped with screw(52), screw(52)Lower end
Provided with the second nut(57), screw(52)With the second nut(57)Coordinate, the rotating shaft of right(59)Right-hand member is provided with rocking bar(56).
4. the practical small blackboard of a kind of teaching according to claim 3, it is characterised in that also include flat belt(6)、
First belt pulley(7), housing(8), the second connecting rod(9), the second slide rail(10), the second sliding block(11), the second contiguous block(12)、
Rack(13), the 3rd slide rail(14), gear(15), the 3rd sliding block(16), the 3rd contiguous block(17), fourth bearing seat(18),
Two belt pulleys(19), bull stick(20)With the first spring(21), rocking bar(56)It is provided with the first belt pulley(7), base(3)Top right
Side is provided with the 3rd contiguous block(17), the 3rd contiguous block(17)Top is provided with rack(13), support(1)Left and right sides lower end is equipped with
Housing(8), right housing(8)Right wall is provided with fourth bearing seat(18), fourth bearing seat(18)On bull stick is installed(20), bull stick
(20)Right-hand member is provided with the second belt pulley(19), the second belt pulley(19)With the first belt pulley(7)On be wound with flat belt(6), bull stick
(20)Left end is provided with gear(15), gear(15)Positioned at rack(13)Front, gear(15)With rack(13)Engagement, right housing
(8)Rear wall is provided with the 3rd slide rail(14), the 3rd slide rail(14)Upper slidingtype is connected with the 3rd sliding block(16), the 3rd sliding block(16)Before
Wall and rack(13)Rear wall connects, base(3)Top left side is provided with groove(22), base(3)Left side is provided with the second contiguous block
(12), the second contiguous block(12)Positioned at groove(22)Middle upper part, the second contiguous block(12)Top is provided with the second connecting rod(9),
The housing of left(8)Interior rear wall is provided with the second slide rail(10), the second slide rail(10)Upper slidingtype is connected with the second sliding block(11), the
Two sliding blocks(11)Antetheca and the second connecting rod(9)Rear side connects, the housing of left(8)Bottom and groove(22)Between inner bottom part
It is connected with the first spring(21).
5. the practical small blackboard of a kind of teaching according to claim 4, it is characterised in that also include framework(23)、
Graphic Panel(24), second spring(25), transparent bag(26), the 4th slide rail(27), Four-slider(28), drawstring(29), annulus
(30)And fix bar(31), support(1)Inner top is provided with second spring(25), support(1)The left and right sides is arranged with the 4th cunning
Rail(27), the 4th slide rail(27)Upper slidingtype is connected with Four-slider(28), Four-slider(28)Between be provided with Graphic Panel(24),
Graphic Panel(24)Top and second spring(25)Lower end connects, Graphic Panel(24)Front side is provided with transparent bag(26), Four-slider
(28)Bottom is provided with drawstring(29), drawstring(29)End is connected with annulus(30), support(1)The left and right sides is provided with fix bar
(31), annulus(30)With fix bar(31)Coordinate.
6. the practical small blackboard of a kind of teaching according to claim 5, it is characterised in that also include cover plate(32)、
Chalk holder(33)And dividing plate(34), support(1)Left wall is provided with chalk holder(33), chalk holder(33)It is interior to be provided with dividing plate(34), chalk
Box(33)Top rotary type is connected with cover plate(32).
7. the practical small blackboard of a kind of teaching according to claim 6, it is characterised in that also include kelly(35)、
Wheel(36)And wheelhouse portions(37), base(3)Bottom is symmetrical to be provided with wheel(36), wheel(36)Top is provided with wheelhouse portions
(37), wheel(36)Outside is provided with kelly(35).
A kind of 8. practical small blackboard of teaching according to claim 7, it is characterised in that support(1)Material for not
Become rusty steel.
A kind of 9. practical small blackboard of teaching according to claim 8, it is characterised in that gear(15)Material be
Q235 steel.
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CN201710947450.5A CN107839379A (en) | 2017-10-12 | 2017-10-12 | The practical small blackboard of one kind teaching |
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CN201710947450.5A CN107839379A (en) | 2017-10-12 | 2017-10-12 | The practical small blackboard of one kind teaching |
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Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
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CN107827046A (en) * | 2017-10-20 | 2018-03-23 | 赣州市亿研机械设计研究院有限公司 | One kind teaching is erased the board servicing unit with pupil |
CN108638704A (en) * | 2018-05-24 | 2018-10-12 | 衢州学院 | A kind of English teaching board with automatic recording function |
CN108749406A (en) * | 2018-05-24 | 2018-11-06 | 衢州学院 | A kind of board of education of English teaching |
CN109584682A (en) * | 2019-01-21 | 2019-04-05 | 河南工业职业技术学院 | For the movable tool of language teaching |
CN111317310A (en) * | 2020-03-02 | 2020-06-23 | 山东百特展览工程有限公司 | Display stand based on VR technique |
CN111605342A (en) * | 2020-06-05 | 2020-09-01 | 尹冰 | Drawing device for mathematical education |
CN112519457A (en) * | 2020-12-22 | 2021-03-19 | 王琳 | Blackboard capable of being erased quickly for teaching |
CN113865547A (en) * | 2021-11-15 | 2021-12-31 | 福建省民益建设工程有限公司 | Road surface flatness measuring device |
CN114312109A (en) * | 2022-01-26 | 2022-04-12 | 郭天平 | Movable blackboard for education |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN2178184Y (en) * | 1993-12-25 | 1994-09-28 | 邓良华 | Rotating belt type dust-free blackboard |
CN201362113Y (en) * | 2009-02-04 | 2009-12-16 | 上海市民办尚德实验学校 | Blackboard chalk dust collection device |
CN201423840Y (en) * | 2009-06-16 | 2010-03-17 | 徐紫宸 | Blackboard with movable chalk tray groove |
CN201619344U (en) * | 2009-11-09 | 2010-11-03 | 罗旭 | Blackboard groove with convenient cleaning |
CN201646126U (en) * | 2010-04-18 | 2010-11-24 | 卫家宣 | Movable small blackboard |
CN102963172A (en) * | 2012-12-10 | 2013-03-13 | 黄霞 | Blackboard device convenient to clean |
KR101393649B1 (en) * | 2013-12-30 | 2014-05-13 | 이병일 | Lifting apparatus for blackboard |
CN204774242U (en) * | 2015-06-11 | 2015-11-18 | 南京师范大学 | Multifunctional blackboard |
CN205044369U (en) * | 2015-10-20 | 2016-02-24 | 陈仰芹 | Blackboard used for language teaching |
CN205498423U (en) * | 2016-02-16 | 2016-08-24 | 广西机电职业技术学院 | Blackboard is used in elementary english teaching |
CN206217437U (en) * | 2016-09-23 | 2017-06-06 | 牛淑娴 | One kind teaching cleaning non-proliferation type blackboard slot |
-
2017
- 2017-10-12 CN CN201710947450.5A patent/CN107839379A/en active Pending
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN2178184Y (en) * | 1993-12-25 | 1994-09-28 | 邓良华 | Rotating belt type dust-free blackboard |
CN201362113Y (en) * | 2009-02-04 | 2009-12-16 | 上海市民办尚德实验学校 | Blackboard chalk dust collection device |
CN201423840Y (en) * | 2009-06-16 | 2010-03-17 | 徐紫宸 | Blackboard with movable chalk tray groove |
CN201619344U (en) * | 2009-11-09 | 2010-11-03 | 罗旭 | Blackboard groove with convenient cleaning |
CN201646126U (en) * | 2010-04-18 | 2010-11-24 | 卫家宣 | Movable small blackboard |
CN102963172A (en) * | 2012-12-10 | 2013-03-13 | 黄霞 | Blackboard device convenient to clean |
KR101393649B1 (en) * | 2013-12-30 | 2014-05-13 | 이병일 | Lifting apparatus for blackboard |
CN204774242U (en) * | 2015-06-11 | 2015-11-18 | 南京师范大学 | Multifunctional blackboard |
CN205044369U (en) * | 2015-10-20 | 2016-02-24 | 陈仰芹 | Blackboard used for language teaching |
CN205498423U (en) * | 2016-02-16 | 2016-08-24 | 广西机电职业技术学院 | Blackboard is used in elementary english teaching |
CN206217437U (en) * | 2016-09-23 | 2017-06-06 | 牛淑娴 | One kind teaching cleaning non-proliferation type blackboard slot |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107827046A (en) * | 2017-10-20 | 2018-03-23 | 赣州市亿研机械设计研究院有限公司 | One kind teaching is erased the board servicing unit with pupil |
CN108638704A (en) * | 2018-05-24 | 2018-10-12 | 衢州学院 | A kind of English teaching board with automatic recording function |
CN108749406A (en) * | 2018-05-24 | 2018-11-06 | 衢州学院 | A kind of board of education of English teaching |
CN112331030A (en) * | 2019-01-21 | 2021-02-05 | 河南工业职业技术学院 | Tool for Chinese teaching |
CN109584682A (en) * | 2019-01-21 | 2019-04-05 | 河南工业职业技术学院 | For the movable tool of language teaching |
CN112331030B (en) * | 2019-01-21 | 2022-07-29 | 河南工业职业技术学院 | Tool for Chinese teaching |
CN111317310A (en) * | 2020-03-02 | 2020-06-23 | 山东百特展览工程有限公司 | Display stand based on VR technique |
CN111605342A (en) * | 2020-06-05 | 2020-09-01 | 尹冰 | Drawing device for mathematical education |
CN112519457A (en) * | 2020-12-22 | 2021-03-19 | 王琳 | Blackboard capable of being erased quickly for teaching |
CN112519457B (en) * | 2020-12-22 | 2022-03-25 | 山东育博苑文化传媒有限公司 | Blackboard capable of being erased quickly for teaching |
CN113865547A (en) * | 2021-11-15 | 2021-12-31 | 福建省民益建设工程有限公司 | Road surface flatness measuring device |
CN113865547B (en) * | 2021-11-15 | 2023-09-29 | 福建省民益建设工程有限公司 | Road surface roughness measuring device |
CN114312109A (en) * | 2022-01-26 | 2022-04-12 | 郭天平 | Movable blackboard for education |
CN114312109B (en) * | 2022-01-26 | 2023-09-19 | 南京善若网络科技有限公司 | Mobile blackboard for education |
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Application publication date: 20180327 |