CN111462590B - Linear display device of economic management - Google Patents
Linear display device of economic management Download PDFInfo
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- CN111462590B CN111462590B CN202010491029.XA CN202010491029A CN111462590B CN 111462590 B CN111462590 B CN 111462590B CN 202010491029 A CN202010491029 A CN 202010491029A CN 111462590 B CN111462590 B CN 111462590B
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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
- G09B19/00—Teaching not covered by other main groups of this subclass
- G09B19/18—Book-keeping or economics
Abstract
The invention provides an economic management linear display device, and relates to the field of teaching aids. This linear display device of economic management, including the show board, show board bottom fixedly connected with fixed strip, fixed strip one side is equipped with the removal cover, removes the inside fixedly connected with fixed axle of cover, and the inside screw hole of seting up of fixed axle removes the cover top and has seted up the third recess, removes the cover bottom and has seted up the second sliding tray, the inside fixedly connected with coil spring of second sliding tray, and coil spring one end fixedly connected with second fixture block removes the inside sliding connection of cover and has first magnetic path. According to the economic management linear display device, the first magnetic block can be effectively fixed at each vertex point required to be displayed by the data graph by sliding the movable sleeve on the display plate, the trend of the data is displayed through the first rotating block and the silk thread in the fixed shaft, lines do not need to be drawn manually, and the problems that line segments are not drawn manually, the intervals are unequal and the like are avoided.
Description
Technical Field
The invention relates to the technical field of teaching aids, in particular to an economic management linear display device.
Background
In the course of giving lessons, most of the economic management teachers need to perform statistics and trend analysis of some data, and in order to avoid the problem that students are difficult to understand due to the fact that students are told in a dictation mode, many teachers display and explain the statistics and trend analysis of the data by drawing data graphs such as straight line graphs and sector graphs.
Most of the traditional data diagram drawing modes are that teachers draw on a blackboard repeatedly and manually, the problems that line segments are not straight, intervals are unequal, the required data range cannot be drawn accurately and the like can occur in general manual drawing, economic management is a very rigorous specialty, the requirement on the accuracy of data is very high, most teachers can draw data diagrams by means of tools such as rulers, triangular rulers and compasses, repeated operation and tool replacement bring physical burden to operators, effective teaching time in a classroom can be delayed, and the learning time of students is delayed.
Disclosure of Invention
Technical problem to be solved
In view of the deficiencies of the prior art, the present invention provides an economic management linear display device to solve the problems set forth in the background art.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: an economic management linear display device comprises a display board, wherein the bottom of the display board is fixedly connected with a fixed strip, the middle part of one side of the fixed strip, which is far away from the display board, is provided with a first groove, the bottom of the first groove is provided with a second groove, the inside of the second groove is fixedly connected with a first fixed block, the inside of the first groove is slidably connected with a movable sleeve, the axis of the inner part of the movable sleeve is fixedly connected with a fixed shaft, the inside of the fixed shaft is provided with a threaded hole, the top of the movable sleeve is provided with a third groove, the inside of the third groove is rotatably connected with a first rotating block, the bottom of the first rotating block is provided with a fourth groove, the top of the first rotating block is fixedly connected with a second rotating block, the outer side of the second rotating block is provided with a tooth socket, the top of the outer side of the movable sleeve is provided with a first sliding groove, the inside of the first sliding groove is slidably connected with a first clamping block, the first clamping block is movably clamped with the tooth socket, the bottom of the inner side of the movable sleeve is provided with a second sliding groove, the interior of the second sliding groove is fixedly connected with two coil springs which are symmetrically distributed, one end of the coil spring, which is far away from the moving sleeve, is fixedly connected with a second clamping block, the second clamping block is connected with a second sliding groove in a sliding way through the coil spring, the inner part of the movable sleeve is connected with a plurality of first magnetic blocks in a sliding way, the first magnetic blocks are distributed in a uniform array, the first magnet is internally provided with a first through hole and is connected with the fixed shaft in a sliding way through the first through hole, a third sliding groove is formed in the outer side of the moving sleeve, a third clamping block is connected inside the third sliding groove in a sliding mode, and the sliding sleeve is fixedly connected to one end, far away from the fixed shaft, of the third clamping block.
Preferably, the fixed strip is close to show board one side and has seted up first bearing groove, first bearing inslot portion rotates and is connected with first movable rod, first movable rod is kept away from show board one side and has been seted up the fourth sliding tray, the inside sliding connection of fourth sliding tray has first sliding block, first sliding block top is equipped with the second sliding block, first dead lever has been cup jointed in the inside equal activity of first sliding block and second sliding block.
Preferably, the fixed strip is kept away from show board one side and has been seted up the fifth sliding tray, the inside sliding connection of fifth sliding tray has the third sliding block, the third sliding block top is equipped with the fourth sliding block, the inside equal activity of third sliding block and fourth sliding block has cup jointed the second dead lever.
Preferably, be equipped with the elastic webbing between second sliding block and the fourth sliding block, the elastic webbing both ends are cup jointed in second sliding block and fourth sliding block activity respectively.
Preferably, a second bearing groove is formed in the top, close to the display board, of the first movable rod, a second magnetic block is magnetically connected inside the second bearing groove, the second movable rod is rotatably connected to the outer side of the second magnetic block, a sixth sliding groove is formed in the second movable rod, and a marking pen is slidably connected inside the sixth sliding groove.
Preferably, a blocking plate is arranged on one side of the second movable rod and fixedly connected with the first movable rod.
Preferably, seventh sliding grooves are formed in two sides of the first movable rod, a second through hole is formed in the blocking plate, eighth sliding grooves are formed in two sides of the second movable rod, the seventh sliding grooves are communicated with the second through hole, and the second through hole is communicated with the eighth sliding grooves.
Preferably, a fourth clamping block is slidably connected inside the seventh sliding groove, and the fourth clamping block penetrates through the seventh sliding groove, the second through hole and the eighth sliding groove.
Preferably, the show board is close to fixed strip one side middle part fixedly connected with scale disc, show board, scale disc, fixed strip, first movable rod, second movable rod material all are the metal material.
Preferably, the third clamping block is located at the top of the first magnetic block, the second clamping block is located between the two first magnetic blocks, and a fifth groove is formed in the bottom of the movable sleeve.
The invention provides an economic management linear display device, which has the following beneficial effects:
1. the economic management linear display device can effectively fix the first magnetic block on the display board through the magnetic connection between the first magnetic block and the display board, and the silk threads required by the exhibition are fixed between the first magnetic block and the exhibition plate, the first magnetic block can be effectively controlled to be separated from or retracted into the moving sleeve through the synergistic effect of the second clamping block, the third clamping block and the coil spring, the silk threads required by the exhibition can be effectively controlled to be released or retracted into the first rotating block through the synergistic effect of the first rotating block, the second rotating block and the fixed shaft, an operator can effectively fix the first magnetic block at each vertex required to be exhibited by the data graph through the sliding of the movable sleeve on the exhibiting plate, the trend of data is displayed through the silk threads in the first rotating block and the fixed shaft, lines do not need to be drawn manually, and the problems that line segments are not straight and the intervals are unequal when the line segments are drawn manually are avoided.
2. This linear display device of economic management passes through the magnetism of second magnetic path and scale disc to be connected, and the rotation between second movable rod and the second magnetic path is connected, can effectually form a scope space that can draw fan-shaped picture on the scale disc, rotate on the scale disc through the second movable rod, and through the sliding connection between marker pen and the sixth sliding tray, can effectually divide into the scope size that the required show of data with the scale disc, avoided conventional drawing circular use compasses to bring inconvenience and the injury of compasses bottom to the drawing board for the operator, effectual operator manual drawing when having solved and having painted fan-shaped picture leads to circular out of round and the inaccurate problem of space size handle control.
3. This linear display device of economic management passes through the second sliding block, synergism between fourth sliding block and the elastic webbing, can effectual control remove the position of cover on the show dish, and make the operator can be accurate fix first magnetic path in the required line segment top department of data show, first sliding block, synergism between second sliding block and the first dead lever, the frictional force that produces when can effectual reduction first sliding block and third sliding block slide in fourth sliding tray and fifth sliding tray, thereby the elastic webbing both ends appear the problem when avoiding removing the cover and removing when moving because first sliding block or third sliding block and lead to removing the cover and slide, the effectual operator of having solved can not accurate draw the problem in the required data range with the line segment.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an exploded view of the overall structure of the present invention;
FIG. 3 is a partial schematic structural view of the present invention;
FIG. 4 is a schematic view of a marker of the present invention;
FIG. 5 is a schematic view of a stationary shaft according to the present invention;
FIG. 6 is a schematic view of a coil spring of the present invention;
FIG. 7 is a schematic view of a shift collar of the present invention;
FIG. 8 is a schematic structural diagram of a first rotating block of the present invention;
FIG. 9 is an enlarged view of the portion A of FIG. 2 according to the present invention;
FIG. 10 is an enlarged view of the portion B of FIG. 2 according to the present invention;
fig. 11 is an enlarged view of the structure of the portion C of fig. 2 according to the present invention.
In the figure: 1. a display board; 2. a fixing strip; 3. a first groove; 4. a second groove; 5. a first fixed block; 6. moving the sleeve; 7. a fixed shaft; 8. a threaded hole; 9. a third groove; 10. a first rotating block; 11. a fourth groove; 12. a second turning block; 13. a tooth socket; 14. a first sliding groove; 15. a first clamping block; 16. a second sliding groove; 17. a coil spring; 18. a second fixture block; 19. a first magnetic block; 20. a third sliding groove; 21. a third fixture block; 22. a sliding sleeve; 23. a first bearing groove; 24. a first movable bar; 25. a fourth sliding groove; 26. a first slider; 27. a second slider; 28. a first fixing lever; 29. a fifth sliding groove; 30. a third slider; 31. a fourth slider; 32. a second fixing bar; 33. an elastic band; 34. a second bearing groove; 35. a second magnetic block; 36. a second movable bar; 37. a sixth sliding groove; 38. a marking pen; 39. a blocking plate; 40. a second through hole; 41. an eighth sliding groove; 42. a seventh sliding groove; 43. a fourth fixture block; 44. a graduated disk; 45. and a fifth groove.
Detailed Description
The embodiment of the invention provides an economic management linear display device, as shown in figures 1-11, which comprises a display board 1, wherein the bottom of the display board 1 is fixedly connected with a fixed strip 2, the middle part of one side of the fixed strip 2, which is far away from the display board 1, is provided with a first groove 3, the bottom of the first groove 3 is provided with a second groove 4, the inside of the second groove 4 is fixedly connected with a first fixed block 5, the inside of the first groove 3 is slidably connected with a movable sleeve 6, the inner axis of the movable sleeve 6 is fixedly connected with a fixed shaft 7, the inside of the fixed shaft 7 is provided with a threaded hole 8, the inside of the fixed shaft 7, which is close to the surface, is provided with a threaded hole 8, the threaded hole 8 can effectively transmit a silk thread on the outer side, thereby increasing the friction force when the silk thread is conducted and avoiding that the external silk thread can not be straightened because the friction force borne by the silk thread is small when the silk thread is conveyed like a straight hole. The top of the moving sleeve 6 is provided with a third groove 9, the inside of the third groove 9 is rotatably connected with a first rotating block 10, the bottom of the first rotating block 10 is provided with a fourth groove 11, the top of the first rotating block 10 is fixedly connected with a second rotating block 12, the outer side of the second rotating block 12 is provided with a tooth socket 13, the top of the outer side of the moving sleeve 6 is provided with a first sliding groove 14, the inside of the first sliding groove 14 is slidably connected with a first clamping block 15, the first clamping block 15 is movably clamped with the tooth socket 13, the bottom of the inner side of the moving sleeve 6 is provided with a second sliding groove 16, the inside of the second sliding groove 16 is fixedly connected with a coil spring 17, the number of the coil springs 17 is two, the two coil springs 17 are symmetrically distributed, one end of the coil spring 17, far away from the moving sleeve 6, is fixedly connected with a second clamping block 18, the second clamping block 18 is slidably connected with the second sliding groove 16 through the coil spring 17, and the coil spring 17 is formed by bending an elastic metal sheet in an S shape, a article that is used for some straight inslot portions to need the elastic component control, can the inside slip of second fixture block 18 of effectual control second sliding tray 16, the inside sliding connection of removal cover 6 has first magnetic path 19, the quantity of first magnetic path 19 sets up to a plurality ofly, a plurality of first magnetic paths 19 are even array distribution, first magnetic path 19 is inside to have seted up first through-hole, first magnetic path 19 is through first through-hole and fixed axle 7 sliding connection, all inhale for opposite sex between a plurality of first magnetic paths 19, through the magnetic attraction between the first magnetic path 19, can be effectual with the quick removal of accomodating of a plurality of first magnetic paths 19 inside the removal cover 6, third sliding tray 20 has been seted up in the removal cover 6 outside, the inside sliding connection of third sliding tray 20 has third fixture block 21, fixed axle 7 one end fixedly connected with sliding sleeve 22 is kept away from to third fixture block 21.
The top of one side of the first movable rod 24 close to the display board 1 is provided with a second bearing groove 34, the inside of the second bearing groove 34 is magnetically connected with a second magnetic block 35, the outer side of the second magnetic block 35 is rotatably connected with a second movable rod 36, the inside of the second movable rod 36 is provided with a sixth sliding groove 37, the inside of the sixth sliding groove 37 is slidably connected with a marking pen 38, one side of the second movable rod 36 is provided with a blocking plate 39, the blocking plate 39 is fixedly connected with the first movable rod 24, both sides of the first movable rod 24 are provided with seventh sliding grooves 42, the inside of the blocking plate 39 is provided with a second through hole 40, both sides of the second movable rod 36 are provided with eighth sliding grooves 41, the seventh sliding groove 42 is communicated with the second through hole 40, the second through hole 40 is communicated with the eighth sliding grooves 41, the inside of the seventh sliding groove 42 is slidably connected with a fourth clamping block 43, the fourth clamping block 43 penetrates through the seventh sliding groove 42, a second through hole 40 and an eighth sliding groove 41.
The implementation mode is specifically as follows: in the process of practical use, a worker firstly determines whether a line drawing graph or a sector drawing graph is drawn, when the line drawing graph is drawn, the worker rotates the first movable rod 24 to rotate the first movable rod 24 to a vertical state, then marks required scales on the outer sides of the fixed strip 2 and the first movable rod 24, after the scales are marked, the worker fixes the first rotating block 10 and the free end of the silk thread which is arranged in the fixed shaft 7 in advance on the first fixed block 5, the worker slides the movable sleeve 6 onto the display board 1 through the first groove 3, when the movable sleeve slides, the first magnetic block 19 is adsorbed on the surface of the display board 1 through magnetic attraction, along with the movement of the movable sleeve 6 on the display board 1, the elastic belt 33 moves along with the movement of the movable sleeve 6, the elastic belt 33 moves to drive the first sliding block 26 and the third sliding block 30 at the two ends of the elastic belt 33 to slide in the fourth sliding groove 25 and the fifth sliding groove 29, when the two ends of the elastic belt 33 are both located on the scales required by the data display, the worker slides the sliding sleeve 22 downwards, the sliding sleeve 22 slides downwards to drive the third fixture block 21 to move downwards, meanwhile, the worker moves the moving sleeve 6 upwards slightly, when moving, the second fixture block 18 moves towards the inside of the first sliding groove 14 under the action of force, the first magnet 19 is not fixed by the second fixture block 18 any more, and is separated from the moving sleeve 6 from the fifth groove 45, the first magnet 19 is fixed on the display board 1, the silk thread is extruded and fixed between the first magnet 19 and the display board 1, after the worker fixes the first magnet, the above operations are repeated, all the first magnet 19 are adsorbed on the display board 1, a complete linear graph is formed, the worker can effectively fix the first magnet 19 at each vertex required by the data display by the sliding sleeve 6 on the display board 1, and show the trend of data through the silk thread of first turning block 10 and the inside of fixed axle 7, do not need manual drawing lines, thereby it is not straight to have avoided the manual drawing line segment to appear the line segment, the problem of interval inequality, thereby after the staff demonstrates and accomplishes the line pattern, the staff slides and moves cover 6, receive into the removal cover 6 through fifth recess 45 first magnetic path 19, rotate second turning block 12 simultaneously, second turning block 12 rotates and drives first turning block 10 and rotate, first turning block 10 rotates and receives the silk thread into the first turning block 10 outside through fourth recess 11 and the inside screw hole 8 of fixed axle 7, after receiving the silk thread, the staff slides first fixture block 15, through the activity joint between first fixture block 15 and tooth's socket 13 with second turning block 12 fixed.
When drawing a sector graph, a worker firstly marks a required scale on the scale disc 44, then rotates the first movable rod 24 to rotate the first movable rod 24 to a vertical state, the second magnetic block 35 is adsorbed on the display board 1 through magnetic attraction between the second magnetic block and the display board 1, then the worker slides the fourth clamping block 43 downwards until the fourth clamping block 43 slides to the bottom of the seventh sliding groove 42, then the worker rotates the first movable rod 24 to a horizontal state, then rotates the second movable rod 36 according to a required range of data, after the second movable rod 36 rotates to a certain angle, the worker moves the marker 38, the marker 38 draws a straight line on the surface of the scale disc 44 through the sliding connection between the marker 38 and the sixth sliding groove 37, the above operations are repeated until the sector graph required by the work is drawn, and the second movable rod 36 rotates on the scale disc 44, through the sliding connection between the marker pen 38 and the sixth sliding groove 37, the scale disc 44 can be effectively divided into the range size of data display required, inconvenience brought to an operator by using compasses for drawing in a conventional drawing circle shape and damage to the drawing board by the bottom of the compasses are avoided, the problems of roundness and inaccurate control of space size due to manual drawing of the operator during drawing of a sector graph are effectively solved, after the working of a worker is finished, the worker rotates the second movable rod 36 to a numerical state, then rotates the first movable rod 24 to a vertical state, the worker abuts against the second movable rod 36 to one side of the blocking plate 39, then slides the fourth clamping block 43 upwards, fixes the first movable rod 24 and the second movable rod 36 mutually, and finally rotates the first fixing rod 28 to a horizontal state.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be appreciated by those skilled in the art that while the present invention has been described in terms of a preferred embodiment, which is not intended to be limited by the above-described embodiments, the principles of the invention are described in the above-described embodiments and the description is provided as illustrative of the principles of the invention and that various changes and modifications can be made without departing from the spirit and scope of the invention and these changes and modifications are to be considered as within the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. An economic management linear display device, includes show board (1), its characterized in that: the bottom of the display board (1) is fixedly connected with a fixed strip (2), the middle of one side, away from the display board (1), of the fixed strip (2) is provided with a first groove (3), the bottom of the first groove (3) is provided with a second groove (4), the inside of the second groove (4) is fixedly connected with a first fixed block (5), the inside of the first groove (3) is slidably connected with a movable sleeve (6), the inner axis of the movable sleeve (6) is fixedly connected with a fixed shaft (7), the inside of the fixed shaft (7) is provided with a threaded hole (8), the top of the movable sleeve (6) is provided with a third groove (9), the inside of the third groove (9) is rotatably connected with a first rotating block (10), the bottom of the first rotating block (10) is provided with a fourth groove (11), and the top of the first rotating block (10) is fixedly connected with a second rotating block (12), the outer side of the second rotating block (12) is provided with a tooth socket (13), the top of the outer side of the moving sleeve (6) is provided with a first sliding groove (14), the first sliding groove (14) is internally and slidably connected with a first clamping block (15), the first clamping block (15) is movably clamped with the tooth socket (13), the bottom of the inner side of the moving sleeve (6) is provided with a second sliding groove (16), the second sliding groove (16) is internally and fixedly connected with coil springs (17), the number of the coil springs (17) is two, the two coil springs (17) are symmetrically distributed, one end, far away from the moving sleeve (6), of each coil spring (17) is fixedly connected with a second clamping block (18), the second clamping block (18) is slidably connected with the second sliding groove (16) through the coil springs (17), and the first magnetic block (19) is slidably connected with the inside the moving sleeve (6), the number of the first magnetic blocks (19) is set to be multiple, the first magnetic blocks (19) are distributed in a uniform array, first through holes are formed in the first magnetic blocks (19), the first magnetic blocks (19) are connected with the fixed shaft (7) in a sliding mode through the first through holes, a third sliding groove (20) is formed in the outer side of the moving sleeve (6), a third clamping block (21) is connected in the third sliding groove (20) in a sliding mode, and one end, far away from the fixed shaft (7), of the third clamping block (21) is fixedly connected with a sliding sleeve (22);
a first bearing groove (23) is formed in one side, close to the display board (1), of the fixed strip (2), a first movable rod (24) is rotatably connected inside the first bearing groove (23), a fourth sliding groove (25) is formed in one side, far away from the display board (1), of the first movable rod (24), a first sliding block (26) is slidably connected inside the fourth sliding groove (25), a second sliding block (27) is arranged at the top of the first sliding block (26), and first fixed rods (28) are movably sleeved inside the first sliding block (26) and the second sliding block (27);
a fifth sliding groove (29) is formed in one side, away from the display board (1), of the fixing strip (2), a third sliding block (30) is connected to the inside of the fifth sliding groove (29) in a sliding mode, a fourth sliding block (31) is arranged at the top of the third sliding block (30), and second fixing rods (32) are movably sleeved inside the third sliding block (30) and the fourth sliding block (31);
be equipped with elastic webbing (33) between second sliding block (27) and fourth sliding block (31), elastic webbing (33) both ends are cup jointed in second sliding block (27) and fourth sliding block (31) activity respectively.
2. An economic management linear display device according to claim 1, wherein: first movable rod (24) are close to show board (1) one side top and have seted up second bearing groove (34), second bearing groove (34) inside magnetism is connected with second magnetic block (35), second magnetic block (35) outside is rotated and is connected with second movable rod (36), sixth sliding tray (37) have been seted up to second movable rod (36) inside, sixth sliding tray (37) inside sliding connection has marker pen (38).
3. An economic management linear display device according to claim 2, wherein: and a blocking plate (39) is arranged on one side of the second movable rod (36), and the blocking plate (39) is fixedly connected with the first movable rod (24).
4. An economic management linear display device according to claim 3, wherein: seventh sliding grooves (42) are formed in two sides of the first movable rod (24), second through holes (40) are formed in the blocking plate (39), eighth sliding grooves (41) are formed in two sides of the second movable rod (36), the seventh sliding grooves (42) are communicated with the second through holes (40), and the second through holes (40) are communicated with the eighth sliding grooves (41).
5. An economic management linear display device according to claim 4, wherein: a fourth clamping block (43) is connected in the seventh sliding groove (42) in a sliding mode, and the fourth clamping block (43) penetrates through the seventh sliding groove (42), the second through hole (40) and the eighth sliding groove (41).
6. An economic management linear display apparatus according to claim 1 or 2, wherein: show board (1) is close to fixed strip (2) one side middle part fixedly connected with scale disc (44), show board (1), scale disc (44), fixed strip (2), first movable rod (24), second movable rod (36) material all are the metal material.
7. An economic management linear display device according to claim 1, wherein: the third fixture block (21) is located at the top of the first magnetic blocks (19), the second fixture block (18) is located between the two first magnetic blocks (19), and a fifth groove (45) is formed in the bottom of the movable sleeve (6).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010491029.XA CN111462590B (en) | 2020-06-02 | 2020-06-02 | Linear display device of economic management |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010491029.XA CN111462590B (en) | 2020-06-02 | 2020-06-02 | Linear display device of economic management |
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| CN111462590A CN111462590A (en) | 2020-07-28 |
| CN111462590B true CN111462590B (en) | 2021-08-13 |
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| US20060121428A1 (en) * | 2004-10-28 | 2006-06-08 | Alejandro Terrazas | Electronic token economy media access as reinforcement |
| CN208460253U (en) * | 2018-01-11 | 2019-02-01 | 郑州康晓科技有限公司 | A kind of Novel finical teaching display board |
| CN210378001U (en) * | 2019-08-02 | 2020-04-21 | 黑龙江工程学院 | Economic management teaching operation demonstration teaching aid |
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| CN206349018U (en) * | 2016-12-19 | 2017-07-21 | 陕西职业技术学院 | A kind of economical management teaching demonstration teaching aid |
| CN208298425U (en) * | 2017-12-04 | 2018-12-28 | 魏婧 | A kind of Teaching of Economics datagraphic display board |
| CN209674641U (en) * | 2019-02-27 | 2019-11-22 | 武汉商贸职业学院 | A kind of economics and management science teaching demonstration device |
| CN210039288U (en) * | 2019-06-10 | 2020-02-07 | 四川邮电职业技术学院 | Economic management chart drawing teaching aid |
| CN210535114U (en) * | 2019-09-24 | 2020-05-15 | 吉林工程技术师范学院 | Display device for economic teaching |
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