CN210091404U - Multimedia teaching device that chinese teaching used - Google Patents
Multimedia teaching device that chinese teaching used Download PDFInfo
- Publication number
- CN210091404U CN210091404U CN201920681147.XU CN201920681147U CN210091404U CN 210091404 U CN210091404 U CN 210091404U CN 201920681147 U CN201920681147 U CN 201920681147U CN 210091404 U CN210091404 U CN 210091404U
- Authority
- CN
- China
- Prior art keywords
- dust cover
- positive
- threaded rod
- projector
- teaching
- 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.)
- Active
Links
Images
Landscapes
- Projection Apparatus (AREA)
Abstract
The utility model relates to the technical field of teaching devices, in particular to a multimedia teaching device used for Chinese teaching, which comprises an upper wall body, a supporting plate, a projector and a connecting rod, wherein the supporting plate is connected on the upper wall body in a lifting way, the connecting rod is vertically connected at the middle section of the lower plate surface of the supporting plate, the projector is arranged at the lower end of the connecting rod, two ends of the lower plate surface of the supporting plate are respectively provided with a fixed plate, a transverse positive and negative threaded rod is rotatably connected between the two fixed plates, the positive and negative threaded rod is driven by a motor, the positive and negative threaded rod is respectively in threaded connection with a left dust cover and a right dust cover, the positive and negative threaded rod can drive the left dust cover and the right dust cover to be closed to form a dust-proof cavity when; the projector solves the problems that the projector needs good heat dissipation when in use and needs dust prevention when not in use.
Description
Technical Field
The utility model relates to a teaching technical field specifically is a multimedia teaching device that chinese teaching was used.
Background
Along with the continuous progress of scientific technology, multimedia teaching has obtained more popularization, especially at the in-process of chinese teaching, often can use multimedia equipment so that carry out vivid visual teaching, thereby promote the teaching quality, generally all can use the projecting apparatus at multimedia teaching's in-process, place the in-process at the projecting apparatus, there is a large amount of dusts attached to the projecting apparatus surface, influence the heat dissipation of projecting apparatus like this, and then influence the life of projecting apparatus, and traditional solution is that one deck inoxidizing coating plays dirt-proof effect on the projecting apparatus overcoat, although the inoxidizing coating can have played dirt-proof effect, but still be unfavorable for the heat dissipation of projecting apparatus, so need a multimedia teaching device that chinese teaching used to solve the dustproof and the radiating problem of projecting apparatus.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a multimedia teaching device that chinese teaching was used to solve the projecting apparatus and need good heat dissipation and need dirt-proof problem when not using when using.
In order to solve the technical problem, the utility model adopts the following technical scheme:
a multimedia teaching device for Chinese teaching comprises an upper wall body, a supporting plate, a projector and a connecting rod, wherein the supporting plate is connected to the upper wall body in a lifting manner, the connecting rod is vertically connected to the middle section of the lower plate surface of the supporting plate, and the projector is arranged at the lower end of the connecting rod;
the two ends of the lower plate surface of the supporting plate are respectively provided with a fixed plate, a transverse positive and negative threaded rod is rotatably connected between the two fixed plates, and the positive and negative threaded rod is driven by a motor;
the positive tooth section and the anti-tooth section of positive and negative tooth threaded rod respectively threaded connection have left dust cover and right dust cover, can drive left dust cover and the closed dustproof cavity that forms of right dust cover when positive and negative tooth threaded rod rotates, the projecting apparatus sets up in the dustproof cavity when out of work.
Preferably, the upper ends of the left dust cover and the right dust cover are respectively provided with a movable plate, and the two movable plates are respectively in threaded connection with the orthodontic section and the counter-toothing section of the positive and negative-toothing threaded rod.
Preferably, the fixing plates are transversely provided with limiting rods between, the limiting rods are arranged at two sides of the positive and negative threaded rods, the movable plate is provided with threaded holes and limiting holes, the threaded holes and the limiting holes are matched with the positive and negative threaded rods and the limiting rods in position, the positive and negative threaded rods are in threaded connection with each other and are arranged in the threaded holes, and the limiting rods are movably connected with each other and arranged in the limiting holes.
According to a further technical scheme, the upper sides of the left dust cover and the right dust cover are respectively provided with a strip-shaped notch which is through up and down, and the connecting rod penetrates into the left dust cover or the right dust cover from the strip-shaped notch to be connected with the projector.
A further technical scheme is that a containing groove is formed in the side wall of the strip-shaped notch, a spring and a plugging plate are arranged in the containing groove, one end of the spring is connected with the groove bottom of the containing groove, the other end of the spring is connected with one side of the plugging plate, two ends of the other side of the plugging plate incline to the middle section, and the plugging plate plugs the strip-shaped notch.
According to a further technical scheme, when the blocking plate blocks the strip-shaped gap, a connecting channel is reserved on the inner side of the strip-shaped gap, and the connecting rod penetrates into the left dust cover or the right dust cover from the connecting channel to be connected with the projector.
The technical scheme is that the lower plate surface of the upper wall body is connected with a top plate, a telescopic rod is vertically arranged on the lower plate surface of the top plate, and the lower end of the telescopic rod is connected with the upper plate surface of the supporting plate.
Compared with the prior art, the utility model discloses one of following beneficial effect has at least:
1. the support plate is movably connected to the upper wall body, so that the position of the projector can be adjusted conveniently, the projector can adapt to different projection positions, and the projector can be maintained conveniently;
2. the motor drives the positive and negative threaded rod to rotate so as to drive the left dust cover and the right dust cover to move along the positive and negative threaded rod, when the positive and negative thread threaded rod rotates, the left dust cover and the right dust cover respectively positioned on the positive thread section and the negative thread section can move reversely, when the projector needs to work, the rotation of the positive and negative tooth threaded rods can drive the left dust cover and the right dust cover to move back to back, thereby the left dust cover and the right dust cover can not form a dust-proof cavity any more, the projector can not only work normally, but also can avoid the influence of the left dust cover and the right dust cover on the heat dissipation of the projector when the projector works, when the projector does not work, the left dustproof cover and the right dustproof cover can be driven to move oppositely by the reverse rotation of the positive and negative tooth threaded rods, the left dustproof cover and the right dustproof cover are closed, the projector is sealed in the dustproof cavity, and the dustproof effect is achieved on the projector;
3. connect left dust cover and positive and negative tooth threaded rod and connect right dust cover and positive and negative tooth threaded rod through setting up the fly leaf, realize the threaded connection between positive and negative tooth threaded rod and left dust cover and the right dust cover.
4. The threaded hole is used for realizing threaded connection between the movable plate and the positive and negative threaded rod, and the matching between the limiting rod and the limiting hole can ensure that the movable plate horizontally moves along the positive and negative threaded rod;
5. the upper sides of the left dust cover and the right dust cover are provided with the strip-shaped gaps, so that the connecting rod can be ensured not to influence the horizontal movement of the left dust cover and the right dust cover;
6. the strip-shaped notch is blocked by the blocking plate, so that a dustproof effect can be further achieved, and dust is prevented from falling into the dustproof cavity from the strip-shaped notch when the projector is placed;
7. the plugging plate is connected through the spring, and two ends of the outer side of the plugging plate incline to the middle section, so that the top of the plugging plate can be recovered into the containing groove under the action of the connecting rod in the movement process of the left dust cover and the right dust cover, and the plugging plate is prevented from influencing the movement of the left dust cover and the right dust cover;
8. the plugging plate reserves a connecting channel at the inner side of the strip-shaped notch, and the connecting channel is a reserved position for the connecting rod, so that the normal placement of the connecting rod is ensured;
9. wall body is connected to the roof, sets up the telescopic link at the roof downside and connects the backup pad to realize that the backup pad and the liftable of going up between the wall body are connected, adjust the height of projecting apparatus through the concertina movement of telescopic link, the not projection of co-altitude of convenient to use, and be convenient for overhaul and maintain the projecting apparatus.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of an embodiment of the middle left dust cover and the right dust cover of the present invention.
Fig. 3 is a schematic structural diagram of an embodiment of the middle left dust cover of the present invention.
Fig. 4 is a schematic structural diagram of another embodiment of the middle left dust cover of the present invention.
Fig. 5 is a cross-sectional view of one embodiment of the middle left or right dust cover of the present invention at the receiving groove.
Fig. 6 is a cross-sectional view of another embodiment of the middle left or right dust cover of the present invention at the storage groove.
Fig. 7 is a schematic structural view of the middle movable plate of the present invention.
In the figure: 1. an upper wall body; 2. a top plate; 3. a support plate; 4; a fixing plate; 5. a positive and negative thread rod; 6. a movable plate; 7. a dust-proof cavity; 71. a left dust cover; 72. a right dust cover; 8. A projector; 9. a connecting rod; 10. a motor; 11. a limiting rod; 12. a strip-shaped notch; 13. a plugging plate; 14. a receiving groove; 15. a spring; 16. a threaded hole; 17. a limiting hole; 18. a telescopic rod; 19. a connecting channel.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Fig. 1-7 illustrate an embodiment of a multimedia teaching apparatus for chinese teaching.
Referring to the attached drawing 1, the utility model provides a multimedia teaching device for Chinese teaching, which specifically comprises a support plate 3, a connecting rod 9, a projector 8, a fixed plate 4, a positive and negative threaded rod 5, a motor 10, a left dustproof cover 71 and a right dustproof cover 72, wherein the support plate 3 is arranged on an upper wall 1 of a classroom in a lifting way, the connecting rod 9 is fixedly arranged on a lower plate surface of the support plate 3, the connecting rod 9 is vertically arranged and used for connecting the support plate 3 and the projector 8, namely, the upper end of the connecting rod 9 is connected with the lower plate surface of the support plate 3, and the lower end of the connecting rod 9 is connected with the upper side surface of the projector 8; the two fixing plates 4 are arranged at two ends of the lower plate surface of the supporting plate 3 respectively, the two fixing plates 4 are arranged oppositely, and two ends of the positive and negative tooth threaded rod 5 are rotatably connected and arranged on the two fixing plates 4 respectively; the positive tooth section and the negative tooth section of the positive and negative tooth threaded rod 5 are respectively provided with a left dust cover 71 and a right dust cover 72 in threaded connection, and the left dust cover 71 and the right dust cover 72 can be driven to move along the positive and negative tooth threaded rod 5 when the positive and negative tooth threaded rod 5 rotates, so that the positions of the left dust cover 71 and the right dust cover 72 can be adjusted; when the projector 8 is placed, the left dust cover 71 and the right dust cover 72 are connected in a closed manner, and the projector 8 is placed in the dust-proof cavity 7 formed by the left dust cover 71 and the right dust cover 72, so that the projector 8 can be protected from dust; the motor 10 is arranged on the outer side of any one fixing plate 4, the output shaft of the motor 10 is connected with the positive and negative threaded rod 5, the positive and negative threaded rod 5 can be driven to rotate through the work of the motor 10, and the motor 10 is a motor which can be purchased on the market and can rotate positively and reversely through the output shaft.
Further, can all connect in the upper end of left dust cover 71 and right dust cover 72 and set up fly leaf 6, in time fly leaf 6 sets up to two and threaded connection is respectively at positive tooth section and the anti-tooth section of positive and negative tooth threaded rod 5, and then realizes the threaded connection between left dust cover 71 and right dust cover 72 and the positive and negative tooth threaded rod 5, can drive two fly leaves 6 reverse motion through the rotation of positive and negative tooth threaded rod 5, and then drive left dust cover 71 and right dust cover 72 and carry out the lateral motion of opposite direction along positive and negative tooth threaded rod 5.
The positive and negative thread threaded rod 5 can be driven to rotate by the rotation of the output shaft of the motor 10, and the two movable plates 6 can be driven to move back to back or move in opposite directions; when the projector 8 is needed for teaching, the motor 10 drives the two movable plates 6 to move backwards, so as to drive the left dust cover 71 and the right dust cover 72 to move backwards, and the left dust cover 71 and the right dust cover 72 are far away from the projector 8, at the moment, the projector 8 can be used for normal teaching work, the left dust cover 71 and the right dust cover 72 cannot influence the normal heat dissipation of the projector 8, the projector 8 can be guaranteed to dissipate heat stably and quickly, and the problem that the projector 8 influences the service life due to too slow heat dissipation is avoided; after the use, can drive two fly leaf 6 relative motion through the reversal of motor 10, and then drive left dust cover 71 and right dust cover 72 relative motion, and make left dust cover 71 and right dust cover 72 move to the closed state, make and form closed dustproof cavity 7 between left dust cover 71 and the right dust cover 72, projecting apparatus 8 sets up in dustproof cavity 7 this moment and just can play dirt-proof effect, avoid piling up the dust when projecting apparatus 8 is placing at ordinary times and influence the heat dissipation of projecting apparatus 8 during operation.
Further, two fly leafs 6 can specifically be divided into left fly leaf and right fly leaf, and left fly leaf is connected at the upside of left dust cover 71 to left fly leaf 71 and positive and negative tooth threaded rod 5's orthodontic section threaded connection, and right fly leaf is connected at the upside of right dust cover 72, and right fly leaf and positive and negative tooth threaded rod 5's anti-tooth section threaded connection, positive and negative tooth threaded rod 5's rotation alright drive left dust cover 71 and right dust cover 72 motion, and then make left dust cover 71 and right dust cover 72 move to closed state or separation mode. The left dust cover 71 and the right dust cover 72 can be of the same structure and are vertically and symmetrically arranged along the central end of the positive and negative tooth threaded rod 5, the left dust cover 71 and the right dust cover 72 can be specifically arranged to be hollow cubes, an opening communicated with the inner cavity is formed in one side of the left dust cover 71, the opening of the right dust cover 72 is opposite, and the dust-proof cavity 7 can be formed when the left dust cover 71 and the right dust cover are moved to a closed state.
Referring to fig. 1 and 7, in order to ensure that the movable plate 6 transversely moves along the external threaded post of the positive and negative threaded rod 5, a threaded hole 16 and a limiting hole 17 may be formed in the movable plate 6, the threaded hole 16 is in threaded connection with the external threaded post of the positive and negative threaded rod 5, a limiting rod 11 is also transversely arranged between the two fixing plates 4, the limiting rod 11 passes through the limiting hole 17, and the movable plate 6 can only transversely slide along the positive and negative threaded rod 5 by the cooperation of the limiting rod 11 and the limiting hole 17.
The limiting rods 11 can be arranged to be two, the limiting holes 17 are symmetrically arranged on the upper side, the lower side or the left side and the right side of the positive and negative tooth threaded rod 5, the two limiting holes 17 are also symmetrically arranged on the movable plate 6 and are symmetrically arranged on the upper side, the lower side or the left side and the right side of the threaded hole 16, the positions of the two limiting holes 17 are corresponding to the positions of the two limiting rods 11, and the positions of the threaded hole 16 are corresponding to the positions of the positive and negative tooth threaded rod 5.
The threaded holes 16 on the two movable plates 6 are respectively matched with the external threads on the two external positive and negative thread threaded rods.
Referring to fig. 1 and 2, the upper side surfaces of the left dust cover 71 and the right dust cover 72 can be transversely provided with strip-shaped notches 12 which are through up and down, the strip-shaped notches 12 are used for normally placing the connecting rods 9, when the left dust cover 71 and the right dust cover 72 transversely move, the positions of the connecting rods 9 are kept unchanged, and the strip-shaped notches 12 can move along with the movement of the dust covers 7, so that the connecting rods 9 are prevented from influencing the transverse movement of the left dust cover 71 and the right dust cover 72.
The links 9 may be provided in two and correspond to the left and right dust covers 71 and 72.
Referring to fig. 3, 4, 5 and 6, a receiving groove 14 may be formed on a side wall of the strip-shaped notch 12, a spring 15 and a blocking plate 13 are disposed in the receiving groove 14, one end of the spring 15 is connected to a bottom of the receiving groove 14, and the other end is connected to the blocking plate 13; when the spring 15 is in a normal state, the strip-shaped notch 12 is blocked by the blocking plate 13, and a connecting channel 19 is reserved at the inner end of the strip-shaped notch 12 at the moment, wherein the connecting channel 19 is used for placing the position of the connecting rod 9; the arrangement and placement can ensure that the strip-shaped gap 12 can be blocked when the projector 8 is placed, so that the probability that dust falls into the dustproof cavity 7 from the strip-shaped gap 12 can be reduced, and the projector 8 can be more conveniently prevented from dust; and the blocking plate 13 is connected through the spring 15, and two ends of the outer side of the blocking plate 13 incline to the middle section, so that the blocking plate 13 can be jacked back into the accommodating groove 14 under the action of the connecting rod 11 in the movement process of the left dust cover 71 and the right dust cover 72, and the blocking plate 13 is prevented from influencing the movement of the left dust cover 71 and the right dust cover 72.
Referring to the attached drawing 1, a top plate 2 can be arranged on an upper wall 1, the top plate 2 can be fixed on the lower side of the upper wall 1 in a bolt connection mode, specifically, an expansion threaded sleeve can be arranged in the upper wall 1, a through connecting hole is vertically arranged on the top plate 2, the connecting hole and the expansion threaded sleeve are aligned and then screwed into a bolt, and therefore stable connection between the top plate 2 and the upper wall 1 is achieved; and can be on above-mentioned basis at the vertical telescopic link 18 that sets up of downside of roof 2, the downside at roof 2 is connected to the upper end of telescopic link 18, the upside at backup pad 3 is connected to the lower extreme, alright the swing joint between backup pad 3 and the last wall body 1 of telescopic link 18's concertina movement realization this moment, the height of backup pad 3 can be adjusted through telescopic link 18's concertina movement, and then adjust projector 8's height, in order to adapt to the not projection of co-altitude and be convenient for overhaul and maintain projector 8.
The telescopic rod 18 is an electric telescopic rod commercially available, and the normal operation of the telescopic rod 18 can be ensured by providing a power supply.
Although the invention has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this invention. More specifically, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.
Claims (7)
1. The utility model provides a multimedia teaching device that chinese teaching was used, includes wall body (1), backup pad (3), projecting apparatus (8) and connecting rod (9), its characterized in that: the supporting plate (3) is connected to the upper wall body (1) in a lifting mode, the connecting rod (9) is vertically connected to the middle section of the lower plate surface of the supporting plate (3), and the projector (8) is arranged at the lower end of the connecting rod (9);
fixing plates (4) are arranged at two ends of the lower plate surface of the supporting plate (3), a transverse positive and negative tooth threaded rod (5) is rotatably connected between the two fixing plates (4), and the positive and negative tooth threaded rod (5) is driven by a motor (10);
positive tooth section and the anti-tooth section of positive and negative tooth threaded rod (5) have left dust cover (71) and right dust cover (72) respectively threaded connection, positive and negative tooth threaded rod (5) can drive left dust cover (71) and closed formation dustproof cavity (7) of right dust cover (72) when rotating, set up in dustproof cavity (7) when out of work projecting apparatus (8).
2. The multimedia teaching apparatus for chinese teaching of claim 1, wherein: the upper ends of the left dust cover (71) and the right dust cover (72) are respectively provided with a movable plate (6), and the two movable plates (6) are respectively in threaded connection with the orthodontic section and the counter-toothing section of the positive and negative-toothing threaded rod (5).
3. The multimedia teaching apparatus for chinese teaching as claimed in claim 2, wherein: two fixed plate (4) between transversely be equipped with gag lever post (11), gag lever post (11) set up to two and are located the both sides of positive and negative tooth threaded rod (5), be equipped with screw hole (16) and spacing hole (17) on fly leaf (6), screw hole (16) and spacing hole (17) and the position looks adaptation of positive and negative tooth threaded rod (5) and gag lever post (11), positive and negative tooth threaded rod (5) threaded connection sets up in screw hole (16), gag lever post (11) swing joint sets up in spacing hole (17).
4. The multimedia teaching apparatus for chinese teaching of claim 1, wherein: the upper sides of the left dust cover (71) and the right dust cover (72) are respectively provided with a strip-shaped notch (12) which is through up and down, and the connecting rod (9) penetrates into the left dust cover (71) or the right dust cover (72) from the strip-shaped notch (12) and is connected with the projector (8).
5. The multimedia teaching device for chinese teaching of claim 4, wherein: be equipped with on the lateral wall of bar breach (12) and accomodate groove (14), be equipped with spring (15) and shutoff board (13) in accomodating groove (14), the one end of spring (15) links to each other with the tank bottom of accomodating groove (14), and the other end links to each other with one side of shutoff board (13), the both ends of shutoff board (13) opposite side are to the middle section slope, just shutoff board (13) are with bar breach (12) shutoff.
6. The multimedia teaching apparatus for chinese teaching of claim 5, wherein: when the blocking plate (13) blocks the strip-shaped gap (12), a connecting channel (19) is reserved on the inner side of the strip-shaped gap (12), and the connecting rod (9) penetrates into the left dust cover (71) or the right dust cover (72) from the connecting channel (19) to be connected with the projector (8).
7. The multimedia teaching apparatus for chinese teaching of claim 1, wherein: the lower board surface of the upper wall body (1) is connected with a top board (2), the lower board surface of the top board (2) is vertically provided with an expansion link (18), and the lower end of the expansion link (18) is connected with the upper board surface of the support board (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920681147.XU CN210091404U (en) | 2019-05-13 | 2019-05-13 | Multimedia teaching device that chinese teaching used |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920681147.XU CN210091404U (en) | 2019-05-13 | 2019-05-13 | Multimedia teaching device that chinese teaching used |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210091404U true CN210091404U (en) | 2020-02-18 |
Family
ID=69478074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920681147.XU Active CN210091404U (en) | 2019-05-13 | 2019-05-13 | Multimedia teaching device that chinese teaching used |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210091404U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112628889A (en) * | 2020-12-21 | 2021-04-09 | 慈溪市富运电器有限公司 | Circulating ultra-low temperature air-cooler |
| CN112700685A (en) * | 2021-01-21 | 2021-04-23 | 菏泽学院 | Special teaching device of political economy problem analysis |
-
2019
- 2019-05-13 CN CN201920681147.XU patent/CN210091404U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112628889A (en) * | 2020-12-21 | 2021-04-09 | 慈溪市富运电器有限公司 | Circulating ultra-low temperature air-cooler |
| CN112700685A (en) * | 2021-01-21 | 2021-04-23 | 菏泽学院 | Special teaching device of political economy problem analysis |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210091404U (en) | Multimedia teaching device that chinese teaching used | |
| CN209220301U (en) | A kind of psychological sand table of psychology profession | |
| CN107940195A (en) | A kind of bulk storage plant long-distance monitorng device | |
| CN211209236U (en) | Adjustable electric power transmission device | |
| CN212776630U (en) | Projection arrangement is used in official working | |
| CN212929215U (en) | Weaving equipment is with just dismantling type fixing device | |
| CN210372588U (en) | Novel LED indication screen fixing device | |
| CN214958162U (en) | Movable control cabinet | |
| CN211427513U (en) | Electronic display screen for teaching | |
| CN211698064U (en) | Multifunctional portable circuit fault diagnosis instrument | |
| CN209417902U (en) | A kind of mountain landslide supervision device | |
| CN214312096U (en) | Box for placing projector | |
| CN210051805U (en) | Wireless control type ammeter convenient to installation | |
| CN209682136U (en) | A kind of motor vehicle repair crane of vapour core pump | |
| CN211524089U (en) | Connecting and locking device for building template | |
| CN211417995U (en) | Electrical equipment conveyer for building electrical engineering | |
| CN209393936U (en) | A kind of insulated feeder structure of the casting with cameron core | |
| CN207551817U (en) | A kind of general site intelligent management unit device | |
| CN110676407A (en) | Anti-theft device applied to communication base station storage battery | |
| CN210725031U (en) | Camera convenient to it is dustproof | |
| CN211383663U (en) | Municipal park body-building apparatus | |
| CN214467367U (en) | Projecting device with adjustable education and training is used | |
| CN216215235U (en) | Power distribution control equipment convenient to nimble removal is used | |
| CN218819258U (en) | Classroom recording shooting equipment | |
| CN213361566U (en) | Environmental monitoring is with building site raise dust monitor of preventing turning on one's side |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |