CN111445765A - Display device for advanced mathematics - Google Patents
Display device for advanced mathematics Download PDFInfo
- Publication number
- CN111445765A CN111445765A CN202010387429.6A CN202010387429A CN111445765A CN 111445765 A CN111445765 A CN 111445765A CN 202010387429 A CN202010387429 A CN 202010387429A CN 111445765 A CN111445765 A CN 111445765A
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- CN
- China
- Prior art keywords
- box body
- fixed
- motor
- supporting
- block
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Classifications
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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
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/02—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for mathematics
- G09B23/04—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for mathematics for geometry, trigonometry, projection or perspective
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L11/00—Non-circular-curve-drawing instruments
Abstract
The invention discloses a display device for advanced mathematics, which comprises a horizontal slideway fixed on a drawing board through a fixing mechanism, wherein a longitudinal support body is connected on the horizontal slideway in a sliding manner; a round box body is fixed at the upper end of the supporting body, the bottom surface of the round box body is fixed at the upper end of the supporting body through a first fixing block, and a first telescopic rod in the horizontal direction is arranged on the top surface of the round box body; one side of the round box body facing the drawing board is provided with a longitudinal sliding groove through a connecting block fixedly connected with vertical supporting rod, the sliding groove is connected with a sliding block in a sliding mode, the sliding block is fixedly connected with the other end of the first telescopic rod through a second fixing block, the sliding block is provided with a clamping mechanism used for clamping a painting brush facing the drawing board, and the vertical supporting rod is fixed on a supporting body through a third fixing block. According to the invention, one end of the first telescopic rod moves along the vertical supporting rod in the vertical direction and moves at a constant speed in the horizontal direction in a matched manner, so that the drawn sine curve is very standard.
Description
Technical Field
The invention relates to the field of demonstration devices, in particular to a demonstration device for advanced mathematics.
Background
The sine value of the angle is the ratio of the opposite side of the right-angled triangle formed by the angle to the hypotenuse of the right-angled triangle. The sine function is one of the trigonometric functions, and its definition is: for any real number x, which corresponds to a unique angle (radian system equals this real number), and this angle corresponds to a uniquely determined sine value sinx, the function established according to this rule of correspondence is denoted as f (x) sinx. In the research of the trigonometric function, a pattern of a sinusoidal function is usually drawn, then the pattern of the sinusoidal function is researched, when the sinusoidal function is drawn, the function is usually drawn by a five-point method, namely, five points of a characteristic angle are drawn firstly, and then smooth curves are used for connecting the points.
Disclosure of Invention
The invention aims to overcome the problems in the prior art and provide a display device for advanced mathematics, wherein a first telescopic rod is enabled to perform circular motion on one point of a round box body, so that one end of the first telescopic rod performs vertical motion along a vertical supporting rod, and performs uniform motion in the horizontal direction in a matched mode, and a drawn sine curve is very standard.
Therefore, the invention provides a display device for advanced mathematics, which comprises a horizontal slide way fixed on a drawing board through a fixing mechanism, wherein a longitudinal support body is connected onto the horizontal slide way in a sliding manner, and the support body moves at a constant speed on the horizontal slide way through a first driving mechanism.
The upper end of supporter is fixed with the circle box body, and the underrun first fixed block of circle box body is fixed the upper end of supporter is equipped with the first telescopic link of horizontal direction on the top surface of circle box body, and the one end of first telescopic link articulates on second actuating mechanism through universal hinge joint, and second actuating mechanism sets up just be used for the drive on the circle box body universal hinge joint is the circular motion at the uniform velocity at the top surface of circle box body.
One side of the round box body facing the drawing board is provided with a longitudinal sliding groove through a connecting block fixedly connected with vertical supporting rod, the sliding groove is connected with a sliding block in a sliding mode, the sliding block is fixedly connected with the other end of the first telescopic rod through a second fixing block, the sliding block is provided with a clamping mechanism used for clamping a painting brush facing the drawing board, and the vertical supporting rod is fixed on the supporting body through a third fixing block.
The first driving mechanism and the second driving mechanism are respectively electrically connected with a power supply device.
Further, second actuating mechanism is including seting up opening, first motor, first pivot, connecting rod and the turning block of circle box body roof, first motor sets up on the circle box body diapire, the output shaft of first motor with the key-type connection is passed through to the one end of first pivot, the epaxial one end that is fixed with of first pivot the one end of connecting rod, the other end of connecting rod connect with turning block fixed connection, the turning block runs through the opening of circle box body roof, the turning block is located the one side in the circle box body outside with universal hinge connects, first motor with the power supply unit electricity is connected.
Furthermore, the connecting rod is a telescopic rod with adjustable length and capable of limiting.
Furthermore, the other end of the first rotating shaft is connected with a circular plate through a first bearing, the circular plate and the top wall of the circular box body are located on the same plane, an annular gap is reserved between the outer edge of the circular plate and the inner edge of the through opening, and the rotating block penetrates through the gap.
Furthermore, the first motor is electrically connected with the power supply device through a first adjusting knob, and the first adjusting knob is used for adjusting the output rotating speed of the first motor.
Furthermore, fixture includes that the even at least a set of torsion spring that fixes on the slider, each set includes two relative torsion springs that set up, and each torsion spring's one end is connected the surface of slider, and a splint is connected to each torsion spring's the other end.
Further, still including setting up circle box side wall is used for supporting the supporting mechanism of circle box body, supporting mechanism includes base, the adjustable second telescopic link and the gyro wheel that can be spacing of length on the longitudinal direction, the top of second telescopic link is fixed on the circle box side wall, the second telescopic link is located one side of horizontal slide, the bottom of second telescopic link with base fixed connection sets up below the base the gyro wheel.
Further, first actuating mechanism is including setting up rope, second pivot, bracing piece, second motor and second bearing, the quantity of bracing piece has two and two relative settings of bracing piece, fixes on one of them bracing piece the second motor, the output shaft of second motor with the key-type connection is passed through to the one end of second pivot, the other end of second pivot passes through the second bearing is connected on another bracing piece, the bracing piece is fixed one end on the horizontal slideway, the epaxial fixed of second pivot the one end of rope, the other end of rope are fixed on the supporter, the second motor with the power supply unit electricity is connected.
Furthermore, the second rotating shaft is arranged at one end below the horizontal slide way, a fixed pulley is arranged on the side face of the other end of the horizontal slide way, and the rope is wound around the fixed pulley.
Furthermore, the second motor is electrically connected with the power supply device through a second adjusting knob, and the second adjusting knob is used for adjusting the output rotating speed of the second motor.
The display device for advanced mathematics provided by the invention has the following beneficial effects:
1. one end of the first telescopic rod moves in the vertical direction along the vertical supporting rod by enabling the first telescopic rod to do circular motion on one point of the round box body, and the drawn sine curve is enabled to be very standard by matching with uniform motion in the horizontal direction;
2. the rotating speed of the first motor is adjusted through the first adjusting knob, so that the influence of the rotating speed of the first motor on the sine curve period can be researched under the condition that the speed in the horizontal direction is unchanged, and the influence of the rotating speed of the second motor on the sine curve period can be researched under the condition that the movement in the vertical direction is unchanged;
3. the adjustable second telescopic link that can limit of length that sets up under the circle box body can be so that support the circle box body, and the gyro wheel under the base also can be so that the circle box body is when the uniform motion is done to the horizontal direction, becomes even rolling friction with inhomogeneous slip friction power for uniform motion's more even steady.
Drawings
FIG. 1 is a schematic front view of the overall structure of the present invention;
FIG. 2 is a left side view of the structural connection between the round box and the vertical support bar of FIG. 1;
FIG. 3 is a schematic cross-sectional view of the longitudinal structure of FIG. 2;
FIG. 4 is a first schematic longitudinal sectional view of the first driving mechanism according to the present invention;
fig. 5 is a second schematic longitudinal sectional view of the first driving mechanism according to the present invention.
Description of reference numerals:
1. a round box body; 2. a first motor; 3. a first adjustment knob; 4. a support body; 5. a fixing mechanism; 6. a horizontal slideway; 7. a roller; 8. a base; 9. a second telescopic rod; 10. a positioner; 11. a first telescopic rod; 12. rotating the block; 13. a vertical strut; 14. connecting blocks; 15. a slider; 16. a splint; 17. a chute; 18. a gap; 19. a circular plate; 20. a universal joint; 21. a torsion spring; 22. a second fixed block; 23. a first rotating shaft; 24. a first bearing; 25. a connecting rod; 26. a first fixed block; 27. a third fixed block; 28. a rope; 29. a fixed pulley; 30. a second rotating shaft; 31. a support bar; 32. a second bearing; 33. a second motor; 34. a second adjustment knob.
Detailed Description
Several embodiments of the present invention will be described in detail below with reference to the drawings, but it should be understood that the scope of the present invention is not limited to the embodiments.
In the present application, the type and structure of components that are not specified are all the prior art known to those skilled in the art, and those skilled in the art can set the components according to the needs of the actual situation, and the embodiments of the present application are not specifically limited.
Example 1
The embodiment provides a display device for advanced mathematics, which is realized by basic necessary technical characteristics so as to solve the problems provided by the technical background part in the application document.
Specifically, as shown in fig. 1-2, an embodiment of the present invention provides a display device for advanced mathematics, including a horizontal slide 6 fixed on a drawing board by a fixing mechanism 5, wherein the horizontal slide 6 is slidably connected with a longitudinal support 4, and the support 4 makes a uniform motion on the horizontal slide 6 by a first driving mechanism. The uniform motion of the supporting body 4 provides the motion speed of the sine function in the horizontal direction, and the supporting body 4 does uniform linear motion in the horizontal direction due to the support of the horizontal slideway 6.
The upper end of supporter 4 is fixed with circle box body 1, and the underrun first fixed block 26 of circle box body 1 is fixed the upper end of supporter 4 is equipped with the first telescopic link 11 of horizontal direction on the top surface of circle box body 1, and the one end of first telescopic link 11 articulates on second actuating mechanism through universal hinge joint 20, and second actuating mechanism sets up just be used for driving on the circle box body 1 universal hinge joint 20 is the circular motion at the uniform velocity at the top surface of circle box body 1. The universal joint is driven by the second driving mechanism to do uniform circular motion, so that the first telescopic rod 11 is driven to do uniform circular motion.
The first driving mechanism and the second driving mechanism are respectively electrically connected with a power supply device. The first driving mechanism and the second driving mechanism are driven simultaneously by the power supply device, so that the sliding block 15 can move in a sinusoidal manner in the longitudinal direction and move at a constant speed in the horizontal direction at the same time, and the sliding block 15 can move in the horizontal direction and the vertical direction at the same time, so that a standard sinusoidal curve can be drawn.
Example 2
The present embodiment is based on example 1 and optimizes the implementation scheme in example 1, so that the present embodiment is more stable and better in performance during the operation process, but the present embodiment is not limited to the implementation manner described in the present embodiment.
Specifically, as shown in fig. 1-3, in this embodiment, the second driving mechanism includes opening, first motor 2, first pivot 23, connecting rod 25 and turning block 12 that set up the 1 roof of circle box body, first motor 2 sets up on the 1 diapire of circle box body, the output shaft of first motor 2 with the one end of first pivot 23 is through the key-type connection, be fixed with on the shaft body of first pivot 23 the one end of connecting rod 25, the other end of connecting rod 25 connect with turning block 12 fixed connection, turning block 12 runs through the opening of 1 roof of circle box body, turning block 12 are located the one side in the 1 outside of circle box body with universal joint 20 connects, first motor 2 with power supply unit electricity is connected.
Power supply unit supplies power for first motor 2, and the output shaft of first motor 2 rotates, drives first pivot 23 and rotates to connecting rod 25 rotates round first pivot 23, thereby makes turning block 12 be circular motion in the opening of 1 roof of circle box body, just so can make the one end of first telescopic link 11 also be circular motion along 1 roof of circle box body.
Meanwhile, in this embodiment, the connecting rod 25 is a telescopic rod with adjustable length and capable of limiting. By adjusting the length of the connecting rod 25, the maximum peak of the drawn sinusoidal curve, i.e. the length of the connecting rod 25, can be adjusted.
Meanwhile, in this embodiment, the other end of the first rotating shaft 23 is connected to a circular plate 19 through a first bearing 24, the circular plate 19 and the top wall of the circular box body 1 are located on the same plane, an annular gap 18 is left between the outer edge of the circular plate 19 and the inner edge of the through opening, and the rotating block 12 penetrates through the gap 18. The product is more attractive and elegant in appearance by leaving the gap 18.
Meanwhile, in the present embodiment, the first motor 2 is electrically connected to the power supply device through a first adjusting knob 3, and the first adjusting knob 3 is used for adjusting the output rotation speed of the first motor 2. Therefore, the rotating speed of the rotating block 12 and the moving speed of the sliding block 15 can be adjusted by adjusting the rotating speed of the first motor 2, so that the parameters of a sine curve can be adjusted to draw the sine curve.
In this embodiment, the clamping mechanism includes at least one set of torsion springs 21 uniformly fixed on the sliding block 15, each set includes two torsion springs 21 oppositely arranged, one end of each torsion spring 21 is connected to the surface of the sliding block 15, and the other end of each torsion spring 21 is connected to one clamping plate 16. The two clamping plates 18 clamp the painting brush under the action of the torsion spring 21, so that the painting brush moves along with the movement of the sliding block 15, and a sinusoidal curve can be drawn on the painting board.
In this embodiment, still including setting up 1 lateral wall of circle box body is used for supporting 1 supporting mechanism of circle box body, supporting mechanism includes base 8, the adjustable spacing second telescopic link 9 of length and gyro wheel 7 on the longitudinal direction, the top of second telescopic link 9 is fixed on 1 lateral wall of circle box body, second telescopic link 9 is located one side of horizontal slide 6, the bottom of second telescopic link 9 with base 8 fixed connection sets up below the base 8 gyro wheel 7. Through the regulation of the length of second telescopic link 9, make the height of circle box body 1 adjust, also can adjust horizontal slide 6's height simultaneously, and simultaneously, use second telescopic link 9 and base 8's support, make the removal of circle box body 1 more steady, when drawing sinusoidal like this, just can be more convenient, gyro wheel 7 to setting up below base 8, make when drawing sinusoidal, reduce and ground between frictional force, just so can make more level and smooth that sinusoidal drawn, more accurate, draw sinusoidal after the parameter of adjusting sinusoidal, can make more level and smooth that sinusoidal draws, more accurate.
Example 3
The present embodiment is based on example 1 and optimizes the implementation scheme in example 1, so that the present embodiment is more stable and better in performance during the operation process, but the present embodiment is not limited to the implementation manner described in the present embodiment.
Specifically, as shown in fig. 1 to 5, in this embodiment, the first driving mechanism includes a rope 28, a second rotating shaft 30, a supporting rod 31, a second motor 33 and a second bearing 32, the number of the supporting rods 31 is two, and the two supporting rods 31 are disposed oppositely, the second motor 33 is fixed on one of the supporting rods 31, an output shaft of the second motor 33 is connected to one end of the second rotating shaft 30 through a key, the other end of the second rotating shaft 30 is connected to the other supporting rod 31 through the second bearing 32, the supporting rod 31 is fixed to one end of the horizontal sliding rail 6, one end of the rope 28 is fixed to a shaft body of the second rotating shaft 30, the other end of the rope 28 is fixed to the supporting body 4, and the second motor 33 is electrically connected to the power supply device.
The power supply device supplies power to the second motor 33, so that the second motor 33 works, at the moment, the output shaft of the second motor 33 rotates, the second rotating shaft 30 rotates, one end of the rope 28 is wound on the shaft body of the second rotating shaft 30 when the second rotating shaft 30 rotates, the other end of the rope 28 pulls the support body 4 to move, and the support body 4 achieves linear movement.
Meanwhile, in the present embodiment, the second rotating shaft 30 is disposed at one end of the lower surface of the horizontal sliding path 6, a fixed pulley 29 is disposed at a side surface of the other end of the horizontal sliding path 6, and the rope 28 is threaded around the fixed pulley 29. The fixed pulley 29 changes the direction of the rope 28 in the hand so that, in the initial state, the support body 4 and the second rotating shaft 30 are both located at the same end of the horizontal sliding path 6, which facilitates the adjustment and the start-up.
Meanwhile, in the present embodiment, the second motor 33 is electrically connected to the power supply device through a second adjustment knob 34, and the second adjustment knob 34 is used for adjusting the output rotation speed of the second motor 33. Therefore, the speed of the uniform linear motion of the support body 4 can be adjusted, so that the parameters of the sine curve can be adjusted to draw the sine curve.
The above disclosure is only for a few specific embodiments of the present invention, however, the present invention is not limited to the above embodiments, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.
Claims (10)
1. A display device for advanced mathematics is characterized by comprising a horizontal slide way (6) fixed on a drawing board through a fixing mechanism (5), wherein a longitudinal support body (4) is connected onto the horizontal slide way (6) in a sliding manner, and the support body (4) moves at a constant speed on the horizontal slide way (6) through a first driving mechanism;
a round box body (1) is fixed at the upper end of the supporting body (4), the bottom surface of the round box body (1) is fixed at the upper end of the supporting body (4) through a first fixing block (26), a first telescopic rod (11) in the horizontal direction is arranged on the top surface of the round box body (1), one end of the first telescopic rod (11) is hinged to a second driving mechanism through a universal hinge joint (20), and the second driving mechanism is arranged on the round box body (1) and is used for driving the universal hinge joint (20) to do uniform circular motion on the top surface of the round box body (1);
one side, facing the drawing board, of the round box body (1) is fixedly connected with a vertical supporting rod (13) through a connecting block (14), a longitudinal sliding groove (17) is formed in the vertical supporting rod (13), a sliding block (15) is connected onto the sliding groove (17) in a sliding mode, the sliding block (15) is fixedly connected with the other end of the first telescopic rod (11) through a second fixing block (22), a clamping mechanism used for clamping a painting brush is arranged on one side, facing the drawing board, of the sliding block (15), and the vertical supporting rod (13) is fixed on the supporting body (4) through a third fixing block (27);
the first driving mechanism and the second driving mechanism are respectively electrically connected with a power supply device.
2. The higher mathematics demonstration device according to claim 1, wherein said second driving means comprises a through opening provided on the top wall of said circular box body (1), a first motor (2), a first rotating shaft (23), a connecting rod (25) and a rotating block (12), the first motor (2) is arranged on the bottom wall of the round box body (1), the output shaft of the first motor (2) is connected with one end of the first rotating shaft (23) through a key, the one end of connecting rod (25), the other end of connecting rod (25) connect with turning block (12) fixed connection, turning block (12) run through the opening of circle box body (1) roof, turning block (12) are located the one side in circle box body (1) outside with universal hinge joint (20) are connected, first motor (2) with the power supply unit electricity is connected.
3. The demonstrator for higher mathematics as in claim 2, wherein said connecting rod (25) is a telescopic rod with adjustable length and capable of limiting position.
4. The higher mathematics demonstration device according to claim 2, wherein the other end of said first shaft (23) is connected to a circular plate (19) through a first bearing (24), the circular plate (19) and the top wall of said circular box (1) are located on the same plane, an annular gap (18) is left between the outer edge of the circular plate (19) and the inner edge of said through opening, and said rotating block (12) penetrates through said gap (18).
5. A presentation device for higher mathematics as claimed in claim 2, wherein said first motor (2) is electrically connected to said power supply means by means of a first adjustment knob (3), said first adjustment knob (3) being adapted to adjust the output rotation speed of said first motor (2).
6. A higher mathematics demonstration device as claimed in claim 1 wherein said clamping means comprises at least one set of torsion springs (21) uniformly fixed on said slide (15), each set comprising two torsion springs (21) oppositely arranged, one end of each torsion spring (21) being connected to the surface of said slide (15) and the other end of each torsion spring (21) being connected to a clamping plate (16).
7. The device for displaying higher mathematics as claimed in claim 1, further comprising a supporting mechanism disposed on the side wall of the round box body (1) for supporting the round box body (1), wherein the supporting mechanism comprises a base (8), a second telescopic rod (9) with adjustable length and limited position in the longitudinal direction, and a roller (7), the top of the second telescopic rod (9) is fixed on the side wall of the round box body (1), the second telescopic rod (9) is located on one side of the horizontal slideway (6), the bottom of the second telescopic rod (9) is fixedly connected with the base (8), and the roller (7) is disposed under the base (8).
8. The higher mathematics demonstration device according to claim 1, wherein said first driving mechanism comprises a rope (28), a second rotating shaft (30), a supporting rod (31), a second motor (33) and a second bearing (32), said supporting rod (31) has two numbers and two supporting rods (31) are oppositely arranged, one of said supporting rods (31) is fixed with said second motor (33), the output shaft of said second motor (33) is connected with one end of said second rotating shaft (30) by key joint, the other end of said second rotating shaft (30) is connected with the other supporting rod (31) by said second bearing (32), said supporting rod (31) is fixed on one end of said horizontal slideway (6), said shaft body of said second rotating shaft (30) is fixed with one end of said rope (28), the other end of said rope (28) is fixed on said supporting body (4), the second motor (33) is electrically connected to the power supply device.
9. A higher mathematics demonstration device as claimed in claim 8 wherein said second rotation shaft (30) is arranged at one end under said horizontal slide (6), the side of the other end of the horizontal slide (6) is provided with a fixed pulley (29), said rope (28) passes around said fixed pulley (29).
10. The demonstrator for higher mathematics as recited in claim 8, wherein said second motor (33) is electrically connected to said power supply unit by means of a second adjusting knob (34), said second adjusting knob (34) being adapted to adjust the output rotation speed of said second motor (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010387429.6A CN111445765A (en) | 2020-05-09 | 2020-05-09 | Display device for advanced mathematics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010387429.6A CN111445765A (en) | 2020-05-09 | 2020-05-09 | Display device for advanced mathematics |
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| Publication Number | Publication Date |
|---|---|
| CN111445765A true CN111445765A (en) | 2020-07-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010387429.6A Pending CN111445765A (en) | 2020-05-09 | 2020-05-09 | Display device for advanced mathematics |
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| CN (1) | CN111445765A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102381106A (en) * | 2010-08-30 | 2012-03-21 | 天津职业技术师范大学 | Ruler for drawing sine wave |
| CN102602808A (en) * | 2012-04-09 | 2012-07-25 | 上海海事大学 | Device and method for detecting rope length of two-hanger crane |
| CN102689552A (en) * | 2012-06-15 | 2012-09-26 | 无锡市市北高级中学 | Drawing tool for sine function |
| CN202956959U (en) * | 2012-11-26 | 2013-05-29 | 卢浩源 | Sine curve demonstration instrument |
| CN203882488U (en) * | 2014-03-21 | 2014-10-15 | 田峰 | Simple harmonic motion and unit circle demonstration instrument |
| CN206639465U (en) * | 2017-01-17 | 2017-11-14 | 崔振坤 | A kind of simple harmonic motion demonstrator of circular motion |
| CN107377564A (en) * | 2017-09-07 | 2017-11-24 | 吴启航 | A kind of beverage production beverage bottle cleaning device |
| CN108261000A (en) * | 2018-03-07 | 2018-07-10 | 盐城国众化工有限公司 | A kind of showing stand of Hazardous Chemical Substances security display |
| CN108922333A (en) * | 2018-09-27 | 2018-11-30 | 莆田学院 | Describe sinusoidal teaching demonstration device and application method |
| CN210052354U (en) * | 2019-04-02 | 2020-02-11 | 重庆工业职业技术学院 | Ideological and political theory teaching auxiliary device |
| CN210227604U (en) * | 2019-04-18 | 2020-04-03 | 南京旅游职业学院 | Scientific research achievement information display device |
-
2020
- 2020-05-09 CN CN202010387429.6A patent/CN111445765A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102381106A (en) * | 2010-08-30 | 2012-03-21 | 天津职业技术师范大学 | Ruler for drawing sine wave |
| CN102602808A (en) * | 2012-04-09 | 2012-07-25 | 上海海事大学 | Device and method for detecting rope length of two-hanger crane |
| CN102689552A (en) * | 2012-06-15 | 2012-09-26 | 无锡市市北高级中学 | Drawing tool for sine function |
| CN202956959U (en) * | 2012-11-26 | 2013-05-29 | 卢浩源 | Sine curve demonstration instrument |
| CN203882488U (en) * | 2014-03-21 | 2014-10-15 | 田峰 | Simple harmonic motion and unit circle demonstration instrument |
| CN206639465U (en) * | 2017-01-17 | 2017-11-14 | 崔振坤 | A kind of simple harmonic motion demonstrator of circular motion |
| CN107377564A (en) * | 2017-09-07 | 2017-11-24 | 吴启航 | A kind of beverage production beverage bottle cleaning device |
| CN108261000A (en) * | 2018-03-07 | 2018-07-10 | 盐城国众化工有限公司 | A kind of showing stand of Hazardous Chemical Substances security display |
| CN108922333A (en) * | 2018-09-27 | 2018-11-30 | 莆田学院 | Describe sinusoidal teaching demonstration device and application method |
| CN210052354U (en) * | 2019-04-02 | 2020-02-11 | 重庆工业职业技术学院 | Ideological and political theory teaching auxiliary device |
| CN210227604U (en) * | 2019-04-18 | 2020-04-03 | 南京旅游职业学院 | Scientific research achievement information display device |
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Application publication date: 20200724 |