CN112648512A - Intelligent computer teaching equipment based on mobile internet - Google Patents
Intelligent computer teaching equipment based on mobile internet Download PDFInfo
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- CN112648512A CN112648512A CN202011527894.1A CN202011527894A CN112648512A CN 112648512 A CN112648512 A CN 112648512A CN 202011527894 A CN202011527894 A CN 202011527894A CN 112648512 A CN112648512 A CN 112648512A
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- bottom plate
- computer teaching
- teaching equipment
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- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/42—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters with arrangement for propelling the support stands on wheels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
- F16M11/043—Allowing translations
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
- F16M11/06—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting
- F16M11/08—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting around a vertical axis, e.g. panoramic heads
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
- F16M11/06—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting
- F16M11/10—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting around a horizontal axis
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/18—Heads with mechanism for moving the apparatus relatively to the stand
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/20—Undercarriages with or without wheels
- F16M11/24—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other
- F16M11/26—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other by telescoping, with or without folding
- F16M11/28—Undercarriages for supports with one single telescoping pillar
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B5/00—Electrically-operated educational appliances
- G09B5/08—Electrically-operated educational appliances providing for individual presentation of information to a plurality of student stations
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Business, Economics & Management (AREA)
- Physics & Mathematics (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Electrically Operated Instructional Devices (AREA)
Abstract
The invention belongs to the technical field of teaching equipment, discloses intelligent computer teaching equipment based on mobile interconnection, and solves the problem that the existing teaching equipment lacks an adjusting part; the technical key points are as follows: including the bottom plate, bottom plate top mid-mounting has the lifting unit, and the bottom plate top is connected with the horizontally mounting panel through the lifting unit, and the top of mounting panel is rotated and is connected with vertical ascending axis of rotation, the top fixed mounting of axis of rotation has the horizontally loading board, and the spout has inwards been seted up at the top of loading board, and sliding connection has the slider in the spout, and the top of controlling two sets of sliders has the riser respectively fixed mounting, controls and installs the rotating member on the relative both sides wall of two sets of risers, controls and two sets of relative both sides wall of riser rotate respectively through the rotating member and be connected with L type frame, has seted up the standing groove in the L type frame, controls two sets ofly L type frame is through placing.
Description
Technical Field
The invention relates to the technical field of teaching equipment, in particular to intelligent computer teaching equipment based on mobile interconnection.
Background
With the continuous development of basic education cause in China, the teaching mode is not limited to the traditional classroom teaching mode, and the computer multimedia interactive teaching mode is widely welcomed by students.
In order to solve the problems, Chinese patent (publication No. CN 109064805A, publication No. 2018.12.21) discloses intelligent computer teaching equipment based on mobile interconnection, and a crawler-type mobile chassis and an electric push rod are arranged at the bottom of a bottom plate of the intelligent computer teaching equipment, so that the equipment can be controlled to move. However, the device lacks a part for adjusting the position of the computer, the rotation and the height of the computer cannot be controlled, and the device cannot fix computers with different models and sizes.
Disclosure of Invention
The invention aims to provide intelligent computer teaching equipment based on mobile internet, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
an intelligent computer teaching device based on mobile interconnection comprises a bottom plate, wherein supporting legs are fixedly arranged on the periphery of the bottom plate, the bottoms of the supporting legs are rotatably connected with idler wheels, a lifting part is arranged in the middle of the top of the bottom plate, the top of the bottom plate is connected with a horizontal mounting plate through the lifting part, the top of the mounting plate is rotatably connected with a vertical upward rotating shaft, a circle of rack is fixedly arranged on the circumferential surface of the rotating shaft, a motor is fixedly arranged at the top of the mounting plate on the left side of the rotating shaft, a driving gear disc meshed with the rack is fixedly arranged on an output shaft of the motor, a horizontal bearing plate is fixedly arranged at the top of the rotating shaft, a sliding groove is formed in the top of the bearing plate, ball screws with opposite thread directions on the left side and the right side are, the top of controlling two sets of sliders is fixed mounting respectively has the riser, ball screw's right-hand member extends the loading board and is connected with the motor of fixing on the loading board lateral wall, installs rotating member on controlling two sets of relative both sides walls of riser, controls two sets of relative both sides walls of riser and rotates respectively through rotating member and be connected with L type frame, has seted up the standing groove in the L type frame, controls two sets of the L type frame is through placing the display screen of placing computer teaching equipment can dismantle.
As a further scheme of the invention: the lifting component comprises a sleeve fixedly installed in the middle of the top of the bottom plate, a lifting cylinder is connected in the sleeve in a sliding mode, and an electric telescopic rod fixedly connected with a telescopic end and the lifting cylinder is fixedly installed at the bottom in the sleeve.
As a further scheme of the invention: the top fixed mounting of mounting panel has the bracing piece that is located axis of rotation periphery, and the top of bracing piece is rotated and is connected with the carousel of hugging closely the loading board diapire.
As a further scheme of the invention: the rotatable part comprises rotating rods which are rotatably connected to the vertical plates, a rotating groove is formed in one side wall of each of the left and right vertical plates, the side wall of each of the left and right vertical plates opposite to each other is fixedly connected with the L-shaped frame, and a rotating disc which is located in the rotating groove is fixedly mounted on one side wall of each of the left and right vertical plates opposite to each other.
As a still further scheme of the invention: the inner wall is fixed with multiunit expanding spring respectively around the standing groove on, two sets of fixed plates around the multiunit expanding spring of both sides is common fixedly connected with respectively around.
Compared with the prior art, the invention has the beneficial effects that: the lifting component consisting of the sleeve, the lifting cylinder and the electric telescopic rod is arranged, so that the display screen can be conveniently and quickly adjusted to a proper height for teaching; the distance between the left and right groups of L-shaped frames can be adjusted by arranging the ball screws with opposite thread directions on the left and right sides, so that display screens with different models and sizes can be fixed; through setting up the rotatable parts who comprises dwang, swivelling chute and rotary disk, the rotation angle of adjustment display screen that can convenient and fast.
Drawings
Fig. 1 is a schematic structural diagram of an intelligent computer teaching device based on mobile internet.
FIG. 2 is a schematic diagram of a bearing plate and a connection structure thereof in an intelligent computer teaching device based on mobile interconnection.
FIG. 3 is a schematic diagram of an L-shaped frame and an internal structure thereof in the intelligent computer teaching device based on mobile interconnection.
Wherein: the device comprises a bottom plate 1, supporting legs 2, rollers 3, a lifting part 4, a sleeve 41, a lifting cylinder 42, an electric telescopic rod 43, a mounting plate 5, a rotating shaft 6, a rack 7, a motor 8, a transmission fluted disc 9, a supporting rod 10, a turntable 11, a bearing plate 12, a sliding chute 13, a ball screw 14, a sliding block 15, a vertical plate 16, a rotating part 17, a rotating rod 171, a rotating groove 172, a rotating disc 173, an L-shaped frame 18, a display screen 19, a placing groove 20, a telescopic spring 21 and a fixing plate 22.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; 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 by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Example one
Referring to fig. 1-3, an intelligent computer teaching device based on mobile interconnection comprises a bottom plate 1, supporting legs 2 are fixedly arranged around the bottom of the bottom plate 1, rollers 3 are rotatably connected to the bottoms of the supporting legs 2, a lifting part 4 is arranged in the middle of the top of the bottom plate 1, the top of the bottom plate 1 is connected with a horizontal mounting plate 5 through the lifting part 4, the top of the mounting plate 5 is rotatably connected with a vertical and upward rotating shaft 6, a circle of rack 7 is fixedly arranged on the circumferential surface of the rotating shaft 6, a motor 8 is fixedly arranged on the top of the mounting plate 5 on the left side of the rotating shaft 6, a transmission gear disc 9 meshed with the rack 7 is fixedly arranged on an output shaft of the motor 8, a horizontal bearing plate 12 is fixedly arranged on the top of the rotating shaft 6, a chute 13 is inwards arranged on the top of the bearing plate 12, the peripheral surface of the ball screw 14 is in threaded connection with a left group of sliders 15 and a right group of sliders 15 which are respectively in sliding connection with the sliding grooves 13, the tops of the left group of sliders 15 and the right group of sliders 15 are respectively and fixedly provided with a vertical plate 16, the right end of the ball screw 14 extends out of the bearing plate 12 and is connected with a motor 8 which is fixed on the side wall of the bearing plate 12, two opposite side walls of the left group of sliders 16 and the right group of sliders 16 are provided with rotating parts 17, two opposite side walls of the left group of sliders and the right group of sliders 16 are respectively and rotatably connected with an L-shaped frame 18 through the rotating parts 17, a placing groove 20 is formed in the L-shaped frame 18, the left group of L-shaped frames 18 and the right group of L-shaped frames 18 are detachably provided with display screens 19 of computer teaching equipment through the placing groove 20, the height of the display screens 19, be convenient for to the classmates in different position explain of imparting knowledge to students, drive ball screw 14 through motor 8 and rotate and then adjust the distance between the two sets of sliders 15 about, can adjust the distance between the two sets of L type framves 18 about and then can fix the display screen 19 of different model sizes through adjusting the distance between the two sets of sliders 15.
Example two
On the basis of the first embodiment, the lifting component 4 comprises a sleeve 41 fixedly installed in the middle of the top of the bottom plate 1, a lifting cylinder 42 is slidably connected in the sleeve 41, an electric telescopic rod 43 fixedly connected with a telescopic end and the lifting cylinder 42 is fixedly installed at the bottom in the sleeve 41, the height is adjusted by the mutual matching of the sleeve 41 and the lifting cylinder 42, the supporting rods 10 positioned around the rotating shaft 6 are fixedly installed at the top of the mounting plate 5, the top of the supporting rods 10 is rotatably connected with a turntable 11 tightly attached to the bottom wall of the bearing plate 12, the stability of the bearing plate 12 can be further improved by the mutual matching of the supporting rods 10 and the turntable 11, the rotating component 17 comprises rotating rods 171 rotatably connected to the vertical plates 16, a rotating groove 172 is respectively formed on one side wall of the left and right sets of vertical plates 16 opposite to each other, one side wall of the left and right sets of rotating rods 171 opposite to each other is fixedly connected with the L-, drive dwang 171 through rotating rotary disk 173 and rotate and then drive L type frame 18 and rotate to suitable angle, on the inner wall around standing groove 20 respectively fixed mounting have multiunit expanding spring 21, two sets of fixed plates 22 around the multiunit expanding spring 21 of both sides around the common fixedly connected with respectively, mutually support through expanding spring 21 and fixed plate 22 and can be with display screen 19 fixed more stable.
The working principle of the invention is as follows: height through lifting unit 4 regulation mounting panel 5 and then can adjust display screen 19 to suitable height and be convenient for teach, starter motor 8 drives transmission fluted disc 9 and rotates and then drive rack 7 and rotate, rack 7 rotates and drives axis of rotation 6 and rotate and then adjust the angle of display screen 19, be convenient for teach the explanation to the classmate in different position, drive ball screw 14 through motor 8 and rotate and then adjust the distance between two sets of sliders 15 about, can adjust the distance between two sets of L type framves 18 about through adjusting the distance between two sets of sliders 15 and then can fix the display screen 19 of different model sizes.
Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.
Claims (5)
1. The utility model provides an intelligence computer teaching equipment based on remove interconnection, includes bottom plate (1), and bottom plate (1) bottom fixed mounting all around has supporting leg (2), and supporting leg (2) bottom is rotated and is connected with gyro wheel (3), its characterized in that, bottom plate (1) top mid-mounting has lifting unit (4), and bottom plate (1) top is connected with horizontally mounting panel (5) through lifting unit (4), and the top of mounting panel (5) is rotated and is connected with vertical ascending axis of rotation (6), and fixed mounting has round rack (7) on the circumference surface of axis of rotation (6), fixed mounting has motor (8) at the left mounting panel (5) top of axis of rotation (6), and fixed mounting has transmission fluted disc (9) of being connected with rack (7) meshing on the output shaft of motor (8), the top fixed mounting of axis of rotation (6) has horizontally loading board (12), the top of the bearing plate (12) is inwards provided with a sliding chute (13), the sliding chute (13) is rotationally connected with a ball screw (14) with opposite thread directions at the left side and the right side, the circumferential surface of the ball screw (14) is in threaded connection with a left group of sliding blocks (15) and a right group of sliding blocks (15) which are respectively in sliding connection with the sliding chute (13), the tops of the left group of sliding blocks and the right group of sliding blocks (15) are respectively and fixedly provided with a vertical, the right-hand member of ball (14) extends loading board (12) and is connected with motor (8) of fixing on loading board (12) lateral wall, installs rotating member (17) on the relative both sides wall of two sets of risers (16) about, and the relative both sides wall of two sets of risers (16) is rotated respectively through rotating member (17) and is connected with L type frame (18) about, has seted up standing groove (20) in L type frame (18), controls two sets of L type frame (18) are through placing (20) can dismantle the display screen (19) of placing computer teaching equipment.
2. The intelligent computer teaching device based on mobile internet according to claim 1, wherein the lifting component (4) comprises a sleeve (41) fixedly installed in the middle of the top of the bottom plate (1), a lifting cylinder (42) is slidably connected in the sleeve (41), and an electric telescopic rod (43) with a telescopic end fixedly connected with the lifting cylinder (42) is fixedly installed at the bottom in the sleeve (41).
3. The intelligent computer teaching device based on mobile interconnection of claim 1, wherein the top of the mounting plate (5) is fixedly provided with a support rod (10) positioned around the rotating shaft (6), and the top of the support rod (10) is rotatably connected with a turntable (11) tightly attached to the bottom wall of the bearing plate (12).
4. The intelligent computer teaching equipment based on mobile internet of claim 1, wherein the rotating part (17) comprises a vertical plate (16) and a rotating rod (171) connected in a rotating manner, a rotating groove (172) is respectively formed in one side wall of each of the left and right vertical plates (16) opposite to each other, one side wall of each of the left and right rotating rods (171) opposite to each other is fixedly connected with the L-shaped frame (18), and a rotating disc (173) positioned in the rotating groove (172) is respectively and fixedly installed on one side wall of each of the left and right vertical plates (16) opposite to each other.
5. The intelligent computer teaching device based on mobile interconnection of any one of claims 1-4, wherein a plurality of sets of expansion springs (21) are fixedly mounted on the front and rear inner walls of the placement groove (20), and the sets of expansion springs (21) on the front and rear sides are fixedly connected with a front and rear two sets of fixing plates (22) respectively.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN202011527894.1A CN112648512A (en) | 2020-12-22 | 2020-12-22 | Intelligent computer teaching equipment based on mobile internet |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN202011527894.1A CN112648512A (en) | 2020-12-22 | 2020-12-22 | Intelligent computer teaching equipment based on mobile internet |
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CN112648512A true CN112648512A (en) | 2021-04-13 |
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CN202011527894.1A Withdrawn CN112648512A (en) | 2020-12-22 | 2020-12-22 | Intelligent computer teaching equipment based on mobile internet |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113071248A (en) * | 2021-05-11 | 2021-07-06 | 福州外语外贸学院 | Audit analysis recording device |
CN113294662A (en) * | 2021-05-28 | 2021-08-24 | 上海彼诚文化传播有限公司 | Advertisement playing equipment based on big data |
CN113446492A (en) * | 2021-09-02 | 2021-09-28 | 北京智星空间技术研究院有限公司 | Fixing support of synthetic aperture radar |
CN113116052B (en) * | 2021-05-10 | 2022-06-24 | 济源职业技术学院 | Computer-aided teaching device |
CN114903289A (en) * | 2022-06-20 | 2022-08-16 | 山东理工职业学院 | Integrated practice desk device on accounting teaching computer |
-
2020
- 2020-12-22 CN CN202011527894.1A patent/CN112648512A/en not_active Withdrawn
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113116052B (en) * | 2021-05-10 | 2022-06-24 | 济源职业技术学院 | Computer-aided teaching device |
CN113071248A (en) * | 2021-05-11 | 2021-07-06 | 福州外语外贸学院 | Audit analysis recording device |
CN113071248B (en) * | 2021-05-11 | 2022-05-24 | 福州外语外贸学院 | Audit analysis recording device |
CN113294662A (en) * | 2021-05-28 | 2021-08-24 | 上海彼诚文化传播有限公司 | Advertisement playing equipment based on big data |
CN113446492A (en) * | 2021-09-02 | 2021-09-28 | 北京智星空间技术研究院有限公司 | Fixing support of synthetic aperture radar |
CN114903289A (en) * | 2022-06-20 | 2022-08-16 | 山东理工职业学院 | Integrated practice desk device on accounting teaching computer |
CN114903289B (en) * | 2022-06-20 | 2024-01-26 | 山东理工职业学院 | Computer integrated practice desk device on accounting teaching computer |
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Application publication date: 20210413 |
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