CN110853462A - MBA course assists teaching drawing device - Google Patents

MBA course assists teaching drawing device Download PDF

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Publication number
CN110853462A
CN110853462A CN201911186733.8A CN201911186733A CN110853462A CN 110853462 A CN110853462 A CN 110853462A CN 201911186733 A CN201911186733 A CN 201911186733A CN 110853462 A CN110853462 A CN 110853462A
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fixedly connected
frame
wall
mba
motor
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CN201911186733.8A
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Chinese (zh)
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张军波
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    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09BEDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B19/00Teaching not covered by other main groups of this subclass
    • G09B19/24Use of tools

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  • Business, Economics & Management (AREA)
  • Engineering & Computer Science (AREA)
  • Entrepreneurship & Innovation (AREA)
  • Physics & Mathematics (AREA)
  • Educational Administration (AREA)
  • Educational Technology (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
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Abstract

The invention discloses an MBA course auxiliary teaching drawing device, which belongs to the technical field of MBA course auxiliary teaching, and comprises a frame, wherein a strip-shaped groove is formed in the frame, the inner wall of the strip-shaped groove is fixedly connected with a first motor, and an output shaft of the first motor is fixedly connected with a screw rod. Draw the survey board perpendicularly through setting up, make more standard when drawing vertical coordinate line or chart, required time is shorter simultaneously, improve the time of teaching, improve teaching efficiency, draw the survey board through setting up the level, make when drawing horizontal line more high-efficient, the cooperation is drawn the survey board perpendicularly and is used, the icon of drawing is more standard, it is pleasing to the eye, through setting up the thread bush, make and draw the survey board perpendicularly and can round trip movement, and directly through first motor operation when removing, automatic operation, need not manual operation, reduce teacher's intensity of labour, it is more convenient to make and draw the survey board perpendicularly when using.

Description

MBA course assists teaching drawing device
Technical Field
The invention relates to the technical field of MBA course auxiliary teaching, in particular to an MBA course auxiliary teaching drawing device.
Background
The industrial and commercial management Major (MBA) is a research position of industrial and commercial management major, the MBA is a practical, compound and application high-level management talent which can be competent for high-level management work of industrial and commercial enterprises and economic management departments, and has theory and practice combined, while other major researchers only cultivate scientific research and teaching talents, lean on the theory and do not participate in the practice; the enrollment objects of MBA are generally the national institution and public institution managers and technicians of the university and public institution and technical staff, and other major research students can enroll the enrollment of the enrollment and public institution and staff; the MBA education of a culture party is a professional practice essentially, and particularly emphasizes that on the basis of mastering modern management theories and methods, the practical operation skills of students are cultured through business case analysis, practical combat impression, analysis, decision skill training and the like, so that the students receive challenges in the aspects of knowledge and skill, personality and psychology, targets and aspirations and the like, and have more professional competitive strength, and other research students pay more attention to theoretical learning and academic research.
When the MBA teaching, the teacher need draw proportion picture and flow trend picture on the blackboard, and the teacher generally draws manually when drawing, and is too much when the classroom personnel, when the classroom is too big, and the required picture of drawing also needs to be enlargied, and the manual required time of drawing in classroom is many, has reduced the teaching time to a certain extent, and meeting that draws simultaneously has the error, and is not pleasing to the eye, has the teaching inefficiency and draws the problem of irregularity.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide the MBA course auxiliary teaching drawing device which has the advantages of high teaching efficiency and standard drawing and solves the problems of low teaching efficiency and irregular drawing.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
An MBA course auxiliary teaching drawing device comprises a frame, wherein a strip-shaped groove is formed in the frame, a first motor is fixedly connected to the inner wall of the strip-shaped groove, an output shaft of the first motor is fixedly connected with a lead screw, a rotating seat is embedded in the inner wall of the strip-shaped groove and is connected with the lead screw in a rotating mode, a threaded sleeve is connected to the surface of the lead screw in a threaded mode, a vertical drawing and measuring plate is fixedly connected to the surface of the threaded sleeve and penetrates through the strip-shaped groove and extends into the frame, a third electric push rod is fixedly connected to the inner top wall of the frame, a horizontal drawing and measuring plate is fixedly connected to the bottom of the third electric push rod, an installation box is fixedly connected to the left side of the frame, a second motor is fixedly connected to the front side of the inner wall of the installation box, a first gear is fixedly connected to the output shaft of the second motor, and a second gear is, the front fixedly connected with connecting rod of second gear, and the connecting rod runs through the install bin and extends to the outside of install bin, the first electric putter of front fixedly connected with of connecting rod, first electric putter's back fixedly connected with third motor, the output shaft fixedly connected with second electric putter of third motor, second electric putter's back fixedly connected with connecting plate, the left side fixedly connected with locking device of connecting plate.
Preferably, the left side fixedly connected with slider of survey board is painted to the level, the spout has been seted up on the inner wall right side of frame, the slider is located the inner wall of spout.
Preferably, the inner top wall of the frame is provided with a strip-shaped opening, and the vertical drawing board is positioned on the inner wall of the strip-shaped opening.
Preferably, the left side fixedly connected with first gag lever post of survey board is painted perpendicularly, and first gag lever post runs through the frame and extends to the outside of frame, the through-hole has been seted up on the left side of frame, first gag lever post is located the inner wall of through-hole.
Preferably, the locking device comprises a locking ring and an arc-shaped locking plate, the periphery of the locking ring is fixedly connected with fourth electric push rods distributed annularly, the fourth electric push rods are fixedly connected with the arc-shaped locking plate, one side, far away from the locking ring, of the arc-shaped locking plate is provided with a resistance increasing layer, the resistance increasing layer is made of rubber material components, one side, close to the locking ring, of the arc-shaped locking plate is fixedly connected with a second limiting rod, and the second limiting rod penetrates through the locking ring and extends to the outside of the locking ring.
Preferably, a bearing seat is embedded into the front surface of the mounting box, and the inner edge of the bearing seat is fixedly connected with the surface of the connecting rod.
Preferably, the surface of the locking device is provided with limit holes distributed annularly, and the second limit rod is positioned on the inner wall of the limit hole.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) the scheme has the advantages that the vertical drawing and measuring plate is arranged, so that the drawing of a vertical coordinate line or a chart is more standard, the required time is shorter, the teaching time is prolonged, the teaching efficiency is improved, the horizontal drawing and measuring plate is arranged, the horizontal line is more efficient, the drawing and measuring plate is matched with the vertical drawing and measuring plate, the drawn icon is more standard and beautiful, the vertical drawing and measuring plate can move back and forth by arranging the thread sleeve, the vertical drawing and measuring plate is directly operated by the first motor during moving, the automatic operation is realized, the manual operation is not needed, the labor intensity of teachers is reduced, the vertical drawing and measuring plate is more convenient to use, the locking device can be directly driven to draw a circle by arranging the third motor, the drawn circular proportion chart is more standard, the drawing required time is shorter, the time for drawing the graph is shortened, the teaching efficiency is improved, and the locking device is, make the drawing in-process instrument of drawing can not the landing, the normal operating of guarantee drawing through setting up second electric putter, can adjust at will and draw circular shape size for the figure of drawing accords with the teaching more and needs, improves the efficiency of teaching.
(2) This scheme is through setting up slider and spout, draws the survey board to the level and carries on spacingly, guarantees that the level draws the survey board and can not take place the displacement when removing, ensures the reasonable operation of drawing the process.
(3) This scheme is through setting up first gag lever post, and it is spacing to drawing the survey board perpendicularly, thereby avoids drawing the survey board perpendicularly and takes place the displacement when removing and influence the drawing progress, has ensured the reasonable operation of drawing the survey board perpendicularly.
(4) This scheme is through setting up the resistance-increasing layer, and rubber has the effect that increases the resistance for locking device and drawing tool are connected inseparabler, and the drawing in-process is difficult for the landing, and rubber has plasticity, can not damage the drawing tool surface at the locking in-process, plays the guard action to the drawing process, through setting up the second gag lever post, carries on spacingly to arc locking plate, avoids arc locking plate to take place the displacement at the locking in-process.
(5) This scheme is through setting up the bearing frame for the connecting rod can not damage the install bin when rotating, plays the guard action to the install bin.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a front cross-sectional view of the present invention;
FIG. 3 is a side view of the present invention;
FIG. 4 is an enlarged view taken at A of FIG. 1 in accordance with the present invention;
fig. 5 is a schematic structural view of the locking device of the present invention.
The reference numbers in the figures illustrate:
1. a frame; 101. a strip-shaped opening; 102. a through hole; 103. a slider; 104. a chute; 2. a strip-shaped groove; 3. a first motor; 4. a screw rod; 5. a threaded sleeve; 6. a rotating seat; 7. vertically drawing a measuring plate; 8. installing a box; 801. a bearing seat; 9. a first limit rod; 10. a second motor; 11. a first gear; 12. a second gear; 13. a connecting rod; 14. a first electric push rod; 15. a third motor; 16. a second electric push rod; 17. a connecting plate; 18. a locking device; 1801. locking a ring; 1802. a fourth electric push rod; 1803. an arc-shaped locking plate; 1804. a resistance increasing layer; 1805. a second limiting rod; 19. a third electric push rod; 20. and (4) horizontally drawing and measuring a plate.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-5, an MBA course auxiliary teaching drawing device comprises a frame 1, a strip-shaped groove 2 is formed inside the frame 1, a first motor 3 is fixedly connected to the inner wall of the strip-shaped groove 2, an output shaft of the first motor 3 is fixedly connected with a lead screw 4, a rotating seat 6 is embedded in the inner wall of the strip-shaped groove 2, the lead screw 4 is rotatably connected with the rotating seat 6, a threaded sleeve 5 is connected to the surface of the lead screw 4 through a thread, a vertical drawing plate 7 is fixedly connected to the surface of the threaded sleeve 5, the vertical drawing plate 7 penetrates through the strip-shaped groove 2 and extends into the frame 1, a strip-shaped opening 101 is formed in the inner top wall of the frame 1, the vertical drawing plate 7 is located on the inner wall of the strip-shaped opening 101, a third electric push rod 19 is fixedly connected to the inner top wall of the frame 1, a horizontal drawing plate 20 is fixedly connected to the bottom of the, the front fixedly connected with second motor 10 of the inner wall of install bin 8, the first gear 11 of output shaft fixedly connected with of second motor 10, the surface engagement of first gear 11 is connected with second gear 12, the front fixedly connected with connecting rod 13 of second gear 12, and connecting rod 13 runs through install bin 8 and extends to the outside of install bin 8, the first electric putter 14 of front fixedly connected with of connecting rod 13, the back fixedly connected with third motor 15 of first electric putter 14, the output shaft fixedly connected with second electric putter 16 of third motor 15, the back fixedly connected with connecting plate 17 of second electric putter 16, the left side fixedly connected with locking device 18 of connecting plate 17.
Further, the left side fixedly connected with slider 103 of survey board 20 is painted to the level, and spout 104 has been seted up on the inner wall right side of frame 1, and slider 103 is located the inner wall of spout 104, through setting up slider 103 and spout 104, paints survey board 20 to the level and carries on spacingly, guarantees that the level is painted survey board 20 and can not take place the displacement when removing, ensures the reasonable operation of drawing process.
Further, draw perpendicularly the first gag lever post 9 of left side fixedly connected with of survey board 7, and first gag lever post 9 runs through frame 1 and extends to the outside of frame 1, through-hole 102 has been seted up in the left side of frame 1, first gag lever post 9 is located the inner wall of through-hole 102, through setting up first gag lever post 9, draw perpendicularly survey board 7 and carry out spacingly, thereby avoid drawing perpendicularly survey board 7 and take place the displacement when removing and influence the drawing progress, ensured the reasonable operation of drawing survey board 7 perpendicularly.
Further, the locking device 18 comprises a locking ring 1801 and an arc-shaped locking plate 1803, the periphery of the locking ring 1801 is fixedly connected with a fourth electric push rod 1802 in annular distribution, the fourth electric push rod 1802 is fixedly connected with the arc-shaped locking plate 1803, one side of the arc-shaped locking plate 1803, which is far away from the locking ring 1801, is provided with a resistance-increasing layer 1804, the resistance-increasing layer 1804 is made of a rubber material component, one side of the arc-shaped locking plate 1803, which is close to the locking ring 1801, is fixedly connected with a second limiting rod 1805, the second limiting rod 1805 penetrates through the locking ring 1801 and extends to the outside of the locking ring 1801, by arranging the locking device 18, the drawing tool cannot slide down in the drawing process, the normal operation of drawing is guaranteed, by arranging the resistance-increasing layer 1804, the rubber has the effect of increasing resistance, the locking device 18 and the drawing tool are more tightly connected, the drawing tool is not easy to slide down in, the drawing process is protected.
Furthermore, bearing frame 801 is installed in the front embedding of installing bin 8, and the inner edge of bearing frame 801 is connected with the fixed surface of connecting rod 13, through setting up bearing frame 801 for connecting rod 13 can not damage installing bin 8 when rotating, plays the guard action to installing bin 8.
Furthermore, the surface of the locking device 18 is provided with a limit hole distributed in an annular shape, the second limit rod 1805 is located on the inner wall of the limit hole, and the arc-shaped locking plate 1803 is limited by the second limit rod 1805, so that the arc-shaped locking plate 1803 is prevented from displacing in the locking process.
The working principle is as follows: the device is fixedly installed on a wall surface, when a coordinate system needs to be drawn for assisting teaching, a first motor 3 (model D180M-0250030C-E) is started, the first motor 3 rotates to drive a screw rod 4 to rotate in a rotating seat 6, so that a thread sleeve 5 is driven to move in the horizontal direction, the vertical drawing and measuring plate 7 can move back and forth by arranging the thread sleeve 5 and is directly operated by the first motor 3 during moving, automatic operation is realized, manual operation is not needed, the labor intensity of teachers is reduced, the vertical drawing and measuring plate 7 is more convenient to use, the vertical drawing and measuring plate 7 is further driven to move, the vertical drawing and measuring plate 7 is arranged, the vertical drawing and measuring plate 7 is more standard during drawing of a vertical coordinate line or a chart, the required time is shorter, the teaching time is prolonged, the teaching efficiency is improved, the first limiting rod 9 limits the vertical drawing and the first limiting rod 9 is arranged, the vertical drawing and measuring plate 7 is limited, the situation that drawing progress is influenced due to displacement of the vertical drawing and measuring plate 7 when the vertical drawing and measuring plate 7 moves is avoided, reasonable operation of the vertical drawing and measuring plate 7 is guaranteed, drawing can be directly carried out by a drawing tool when the vertical drawing and measuring plate 7 moves to be proper, the vertical drawing and measuring plate 7 is directly moved to the side edge after drawing is finished, a third electric push rod 19 (with the model of ANT-52) is started, the horizontal drawing and measuring plate 20 moves in the vertical direction, the horizontal drawing and measuring plate 20 is more efficient when horizontal lines are drawn by arranging the horizontal drawing and measuring plate 20, the drawing is matched with the vertical drawing and measuring plate 7, drawn icons are more standard and attractive, the sliding block 103 moves in the sliding groove 104, the horizontal drawing and measuring plate 20 is limited by arranging the sliding block 103 and the sliding groove 104, the situation that the horizontal drawing and measuring plate 20 does not displace when moving is guaranteed, reasonable operation of the drawing process is guaranteed, when a circular drawing needs to be drawn in teaching, a second motor 10 (model MCA17N23-RSOBO) is started, the second motor 10 rotates to drive a first gear 11 to rotate, so that a second gear 12 is driven to rotate, the second gear 12 drives a connecting rod 13 to rotate in a bearing seat 801, the connecting rod 13 cannot damage an installation box 8 when rotating by arranging the bearing seat 801, the installation box 8 is protected, so that a first electric push rod 14 (model ANT-52) is driven to rotate, the length is adjusted as required, a drawing tool is placed in a locking device 18, a fourth electric push rod 1802 (model JETG-B02) is started, the fourth electric push rod 1802 drives an arc-shaped locking plate 1803 to move inwards, a resistance increasing layer 1804 directly contacts the surface of the drawing tool, and rubber has a resistance increasing effect by arranging the resistance increasing layer 1804, so that the locking device 18 is connected with the drawing tool more tightly, the drawing device is not easy to slip off in the drawing process, rubber has plasticity, the surface of the drawing tool cannot be damaged in the locking process, the drawing process is protected, the second limiting rod 1805 limits the arc-shaped locking plate 1803, the arc-shaped locking plate 1803 is limited by the second limiting rod 1805, the arc-shaped locking plate 1803 is prevented from displacing in the locking process, the third motor 15 (the model is D180M-0250030C-E) is started, the locking device 18 can be directly driven to draw a circle by the third motor 15, the drawn circle proportion graph is more standard, the drawing time is shorter, the drawing time is shortened, the teaching efficiency is improved, the second electric push rod 16 (the model is JETG-B02) is started, the size of the drawn circle can be adjusted by the second electric push rod 16, and the drawn graph is more in line with the teaching requirement, efficiency of teaching is improved, the suitable size of adjustment, and third motor 15 drives second electric putter 16 and locking device 18 and rotates, through setting up locking device 18 for the drawing in-process draws the instrument and can not the landing, ensures the normal operating of drawing, thereby accomplishes the drawing process.
The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.

Claims (7)

1. The utility model provides a MBA course assists teaching drawing device, includes frame (1), its characterized in that: the inner wall of the frame (1) is provided with a strip-shaped groove (2), the inner wall of the strip-shaped groove (2) is fixedly connected with a first motor (3), the output shaft of the first motor (3) is fixedly connected with a lead screw (4), the inner wall of the strip-shaped groove (2) is embedded with a rotating seat (6), the lead screw (4) is rotatably connected with the rotating seat (6), the surface of the lead screw (4) is in threaded connection with a threaded sleeve (5), the surface of the threaded sleeve (5) is fixedly connected with a vertical drawing and measuring plate (7), the vertical drawing and measuring plate (7) penetrates through the strip-shaped groove (2) and extends to the inner part of the frame (1), the inner top wall of the frame (1) is fixedly connected with a third electric push rod (19), the bottom of the third electric push rod (19) is fixedly connected with a horizontal drawing and measuring plate (20), the left side of the frame (1) is fixedly connected, the front surface of the inner wall of the mounting box (8) is fixedly connected with a second motor (10), the output shaft of the second motor (10) is fixedly connected with a first gear (11), the surface of the first gear (11) is engaged with a second gear (12), the front surface of the second gear (12) is fixedly connected with a connecting rod (13), and the connecting rod (13) penetrates through the mounting box (8) and extends to the outside of the mounting box (8), the front surface of the connecting rod (13) is fixedly connected with a first electric push rod (14), the back of the first electric push rod (14) is fixedly connected with a third motor (15), the output shaft of the third motor (15) is fixedly connected with a second electric push rod (16), the back of the second electric push rod (16) is fixedly connected with a connecting plate (17), and a locking device (18) is fixedly connected to the left side of the connecting plate (17).
2. The MBA lesson teaching aid drawing device according to claim 1, wherein: the left side fixedly connected with slider (103) of survey board (20) is painted to the level, spout (104) have been seted up on the inner wall right side of frame (1), slider (103) are located the inner wall of spout (104).
3. The MBA lesson teaching aid drawing device according to claim 1, wherein: the inner top wall of the frame (1) is provided with a strip-shaped opening (101), and the vertical drawing and measuring plate (7) is positioned on the inner wall of the strip-shaped opening (101).
4. The MBA lesson teaching aid drawing device according to claim 1, wherein: draw first gag lever post (9) of left side fixedly connected with of survey board (7) perpendicularly, and first gag lever post (9) run through frame (1) and extend to the outside of frame (1), through-hole (102) have been seted up in the left side of frame (1), first gag lever post (9) are located the inner wall of through-hole (102).
5. The MBA lesson teaching aid drawing device according to claim 1, wherein: locking device (18) include locking ring (1801) and arc locking plate (1803), the fourth electric putter (1802) that the fixedly connected with annular distributes around locking ring (1801), fourth electric putter (1802) and arc locking plate (1803) fixed connection, one side that locking ring (1801) were kept away from to arc locking plate (1803) is provided with resistance-increasing layer (1804), the material of resistance-increasing layer (1804) is the rubber materials component, one side fixedly connected with second gag lever post (1805) that arc locking plate (1803) are close to locking ring (1801), and second gag lever post (1805) run through locking ring (1801) and extend to the outside of locking ring (1801).
6. The MBA lesson teaching aid drawing device according to claim 1, wherein: the front surface of the mounting box (8) is embedded with a bearing seat (801), and the inner edge of the bearing seat (801) is fixedly connected with the surface of the connecting rod (13).
7. The MBA course teaching aid drawing device according to claim 5, wherein: the surface of the locking device (18) is provided with limit holes distributed annularly, and the second limit rod (1805) is positioned on the inner wall of the limit hole.
CN201911186733.8A 2019-11-19 2019-11-19 MBA course assists teaching drawing device Pending CN110853462A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911186733.8A CN110853462A (en) 2019-11-19 2019-11-19 MBA course assists teaching drawing device

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Application Number Priority Date Filing Date Title
CN201911186733.8A CN110853462A (en) 2019-11-19 2019-11-19 MBA course assists teaching drawing device

Publications (1)

Publication Number Publication Date
CN110853462A true CN110853462A (en) 2020-02-28

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2420795A1 (en) * 2010-08-17 2012-02-22 Julien Vaidis Angle finder square
CN203032194U (en) * 2013-02-01 2013-07-03 佳木斯大学 Automatically-adjustable teaching blackboard with horizontal coordinatometer and vertical coordinatometer
CN207257187U (en) * 2018-01-11 2018-04-20 绥化学院 A kind of higher mathematics drawing device
CN108297581A (en) * 2017-01-13 2018-07-20 西北农林科技大学 A kind of screw type ellipse plotting unit
CN208602175U (en) * 2018-07-18 2019-03-15 哈尔滨科学技术职业学院 A kind of dedicated plotting unit of mathematical education
CN208946943U (en) * 2018-09-02 2019-06-07 萍乡市上栗中学 A kind of mathematical function limit plotting unit
CN209433632U (en) * 2018-11-23 2019-09-24 康海滨 A kind of several plot exhibits plates

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2420795A1 (en) * 2010-08-17 2012-02-22 Julien Vaidis Angle finder square
CN203032194U (en) * 2013-02-01 2013-07-03 佳木斯大学 Automatically-adjustable teaching blackboard with horizontal coordinatometer and vertical coordinatometer
CN108297581A (en) * 2017-01-13 2018-07-20 西北农林科技大学 A kind of screw type ellipse plotting unit
CN207257187U (en) * 2018-01-11 2018-04-20 绥化学院 A kind of higher mathematics drawing device
CN208602175U (en) * 2018-07-18 2019-03-15 哈尔滨科学技术职业学院 A kind of dedicated plotting unit of mathematical education
CN208946943U (en) * 2018-09-02 2019-06-07 萍乡市上栗中学 A kind of mathematical function limit plotting unit
CN209433632U (en) * 2018-11-23 2019-09-24 康海滨 A kind of several plot exhibits plates

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Application publication date: 20200228

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