CN110570728A - Probability demonstration device - Google Patents
Probability demonstration device Download PDFInfo
- Publication number
- CN110570728A CN110570728A CN201910910554.8A CN201910910554A CN110570728A CN 110570728 A CN110570728 A CN 110570728A CN 201910910554 A CN201910910554 A CN 201910910554A CN 110570728 A CN110570728 A CN 110570728A
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- fixed
- coin
- plate
- storage cylinder
- coin storage
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- 210000004209 hair Anatomy 0.000 claims description 7
- 230000008602 contraction Effects 0.000 claims description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 2
- 235000017491 Bambusa tulda Nutrition 0.000 description 2
- 241001330002 Bambuseae Species 0.000 description 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 2
- 239000011425 bamboo Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000003437 trachea Anatomy 0.000 description 1
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
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- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Pure & Applied Mathematics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Mathematical Physics (AREA)
- Computational Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Algebra (AREA)
- Business, Economics & Management (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- Theoretical Computer Science (AREA)
- Coin-Freed Apparatuses For Hiring Articles (AREA)
Abstract
The invention relates to a mathematical teaching device, in particular to a probability demonstration device, which comprises a device body, wherein the device body comprises a transparent ring, a coin storage cylinder and a coin throwing cylinder, the bottom of the coin storage cylinder is fixed on a second fixing plate, the right side of the upper part of the coin storage cylinder is provided with a first slot, the upper part of the left side of the coin storage cylinder is communicated with a collecting pipe, the rear side of the coin storage cylinder is provided with the coin throwing cylinder, an ejection plate is arranged in the coin throwing cylinder, the right sides outside the coin storage cylinder and the coin throwing cylinder are provided with rotating shafts, the outer side of the top of the rotating shafts is provided with blades, the blades are sequentially provided with a second hole and a first hole from inside to outside, the annular plate is arranged in the second hole, a first spring is arranged below the annular plate, when probability demonstration is required, a motor box below the rotating shafts is opened to drive the rotating shafts to rotate the blades, an annular baffle plate above the blades is ejected, a coin is, and after counting, the coins fall into the coin storage cylinder again.
Description
Technical Field
the invention mainly relates to a mathematical teaching device, in particular to a probability demonstration device.
Background
In present classroom, the teacher can adopt the presentation device to demonstrate for a long time in order to facilitate student understanding, especially when probability teaching is carried out, the content on the book can not be understood directly through only lectures, for example, the experiment of throwing coins is carried out, the experiment result can be obtained more accurately only through carrying out the experiment of throwing coins for a plurality of times, but in the experiment process, the coin throwing can not be carried out continuously, the demonstration efficiency is low, the manual coin throwing can also bring interference of artificial factors, the experiment result is influenced, the thrown coin is required to be taken back, the operation is troublesome, the coin throwing device in the prior art can not continuously and effectively throw coins, the coins need to be recovered manually, and the prior presentation device is single in function and can not carry out other experiments.
Disclosure of Invention
The invention aims to solve the problems and provides a probability demonstration device.
In order to achieve the purpose, the invention adopts the following technical scheme: a probability demonstration device comprises a device body, wherein the device body comprises a transparent circular ring, a coin storage cylinder and a coin throwing cylinder, the bottom of the coin storage cylinder is fixed on a second fixing plate, the second fixing plate is fixed on the inner wall of a left side plate of a first box body, a first notch is arranged on the right side of the upper part of the coin storage cylinder and is annular, pig hairs are arranged on the inner side of the first notch and are fixed on fixing rings which are symmetrical up and down, the fixing rings are fixed on the inner wall of the coin storage cylinder, the upper part of the left side of the coin storage cylinder is communicated with a collecting pipe, the rear side of the coin storage cylinder is provided with the coin throwing cylinder, the left side of the upper part of the coin throwing cylinder is provided with a second notch, a first baffle is fixed on the fixing ring on the rear side of the second notch, an ejection plate is arranged below the first baffle, an air valve is arranged in the middle part below the ejection plate and is fixed on an, the lower end of a second spring is fixed on the upper side face of the gas tank, the right side outside the coin storage cylinder and the coin throwing cylinder is provided with a rotating shaft, the outer side of the top of the rotating shaft is provided with a blade, a blade shell is a second box body, a switch is fixed on a first box body side plate on the right side of the same height of the second box body, the upper side face of the second box body is provided with a second opening and a first opening from inside to outside in sequence, a ring plate is arranged in the second opening, a first spring is arranged below the ring plate, a first connecting rod is fixed on the inner side of the ring plate, a second connecting rod is fixed on the inner side of the first connecting rod, a first spring is arranged.
Preferably, the bottom of the transparent circular ring is fixed on a first fixing plate, the middle of the first fixing plate is provided with an electric valve, the electric valve is arranged below the transparent circular ring, and the lower side surface of the first fixing plate below the electric valve is provided with a collecting pipe.
Preferably, the collection tube is a shrink tube.
Preferably, the lower end of the rotating shaft is fixed on an output shaft of a motor in the motor box, and the bottom of the motor box is fixed on the second fixing plate.
Preferably, the first baffle is annular.
Preferably, a second baffle is arranged on the outer wall of the coin storage barrel above the first open slot, the second baffle is annular, and the height of the second baffle is the same as that of the upper side of the first open slot.
Preferably, the upper side of the front half part of the first slot is obliquely arranged.
Advantageous effects
Compared with the prior art, the invention has the advantages that the device body comprises a transparent circular ring, a coin storage cylinder and a coin throwing cylinder, the bottom of the coin storage cylinder is fixed on a second fixing plate, the right side of the upper part of the coin storage cylinder is provided with a first slot, the upper part of the left side of the coin storage cylinder is communicated with a collecting pipe, the rear side of the coin storage cylinder is provided with the coin throwing cylinder, an ejection plate is arranged in the coin throwing cylinder, the outer right sides of the coin storage cylinder and the coin throwing cylinder are provided with rotating shafts, the outer side of the top of the rotating shafts is provided with blades, the blades are sequentially provided with a second opening and a first opening from inside to outside, an annular plate is arranged in the second opening, a first spring is arranged below the annular plate, when probability demonstration is required, the motor box below the rotating shafts is opened to drive the rotating shafts to rotate the blades, the annular baffle on the upper sides of the blades takes out one coin from the coin storage cylinder, the coin is taken out along with the rotation of the, the sensor of launching the side on the board makes the pneumatic valve open, makes launch the board and go into transparent ring with the coin parabola, and through making statistics of the back, the blade continues to rotate trigger switch, makes the motorised valve of transparent ring below open, and the coin falls into the collecting pipe, and the coin passes through the collecting pipe and reenters a storage coin section of thick bamboo, carries out next round of experiment, adjusts the height of second connecting rod simultaneously, can carry out other experiments such as dice.
Drawings
FIG. 1 is an overall block diagram of the present invention;
FIG. 2 is a top view of the present invention;
FIG. 3 is an enlarged view at A in FIG. 1;
FIG. 4 is a side view of the coin storage and coin throwing cylinder at the slot;
Fig. 5 is a view showing the internal structure of the coin throwing cylinder.
Reference numerals in the figures
1. A device body; 2. a first case; 3. a first fixing plate; 4. a transparent ring; 5. an electrically operated valve; 6. a collection pipe; 7. a coin storage cylinder; 8. a second fixing plate; 9. throwing a coin cylinder; 10. a first baffle plate; 11. a blade; 12. a first opening; 13. a second opening; 14. a second baffle; 15. a switch; 16. a rotating shaft; 17. a second case; 18. a first slot; 19. a first spring; 20. a motor case; 21. a third fixing plate; 22. an annular plate; 23. a first connecting rod; 24. a second connecting rod; 25. a second slot; 26. a second spring; 27. a gas tank; 28. pig hair; 29. a fixing ring; 30. ejecting a plate; 31. an air valve; 32. the trachea.
Detailed Description
The present invention will be described in further detail below by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not to be construed as limiting the present invention.
As shown in fig. 1-5, a probability demonstration device comprises a device body 1, the device body 1 comprises a transparent ring 4, a coin storage cylinder 7 and a coin throwing cylinder 9, the bottom of the transparent ring 4 is fixed on a first fixing plate 3, the middle part of the first fixing plate 3 is provided with an electric valve 5, the electric valve 5 is arranged below the transparent ring 4, the lower side of the first fixing plate 3 below the electric valve 5 is provided with a collecting pipe 6, the collecting pipe 6 is a contraction pipe, the bottom of the coin storage cylinder 7 is fixed on a second fixing plate 8, the second fixing plate 8 is fixed on the inner wall of the left side plate of a first box 5, the right side of the upper part of the coin storage cylinder 7 is provided with a first open groove 18, the front half part of the first open groove 18 is obliquely arranged on the upper side, the first open groove 18 is annular, the inner side of the first open groove 18 is provided with a pig hair 28, the pig hair 28 is fixed on a fixing ring 29 which is symmetrical up and, a second baffle plate 14 is arranged on the outer wall of the coin storage cylinder 7 above the first slot 18, the second baffle plate 14 is annular, the height of the second baffle plate 14 is the same as that of the upper side of the first slot 15, the coin throwing cylinder 9 is arranged on the rear side of the coin storage cylinder 7, a second slot 25 is arranged on the left side of the upper part of the coin throwing cylinder 9, a pig hair 28 and a fixing ring 29 are also arranged on the inner side of the second slot 25, the pig hair 28 inclines inwards and the upper part and the lower part are staggered to prevent coins from leaking out of the slot, a first baffle plate 10 is fixed on the fixing ring 29 on the rear side of the second slot 25, the first baffle plate 10 is annular, an ejection plate 30 is arranged below the first baffle plate 10, an air valve 31 is arranged in the middle of the lower part of the ejection plate 30, the air valve 31 is fixed on an air pipe 32, the lower end of the air pipe 32 is communicated with an air tank 27, the air tank 9 is fixed on the bottom of the coin, the outer right side of the coin storage cylinder 7 and the coin throwing cylinder 9 is provided with a rotating shaft 16, the lower end of the rotating shaft 16 is fixed on an output shaft of a motor in a motor box 20, the bottom of the motor box 20 is fixed on a second fixing plate 8, the outer side of the top of the rotating shaft 16 is provided with a blade 11, the shell of the blade 11 is a second box body 17, a switch 15 is fixed on a side plate of a first box body 2 on the right side of the same height of the second box body 17, a second opening 13 and a first opening 12 are sequentially arranged on the upper side surface of the second box body 17 from inside to outside, an annular plate 22 is arranged in the second opening 13, a first spring 19 is arranged below the annular plate 22, a first connecting rod 23 is fixed on the inner side of the annular plate 22, a second connecting rod 24 is fixed on the inner side of the first connecting rod 23.
When probability demonstration is needed, a motor box 20 below a rotating shaft 16 is opened to enable the rotating shaft 16 to drive a blade 11 to rotate, an annular baffle 22 on the upper side of the blade 11 is opened, a coin is taken out from a coin storage cylinder 7, a second connecting rod 24 rotates along with the rotating shaft 16 under the second baffle 14, a first spring 19 is still pressed after the blade 11 rotates out of the coin storage cylinder 7, the coin is prevented from being ejected too early, when the coin throwing cylinder 9 is used, the second baffle 14 does not press the second connecting rod any more, the coin is ejected upwards by the first spring 19, the coin is pushed into an ejecting plate 30 in the coin throwing cylinder 9 by a first baffle 10, a sensor on the upper side surface of the ejecting plate 30 enables an air valve 31 to be opened, the air valve 31 enables the ejecting plate 30 to eject the coin into a transparent ring 4 in a parabolic manner, after statistics, the blade 11 continues to rotate to trigger a trigger switch 15, the electric valve 5 below the transparent ring 4 is opened, a coin collecting pipe 6, the coin passes through collecting pipe 6 and reenters storage coin section of thick bamboo 7, carries out the experiment of next round, only needs to carry out the record, can continuously insert coins the experiment, has avoided the influence of the human factor in the experimentation, makes the experiment combine more accurate, does not need the manual work to go the operation process of inserting coins, realizes inserting coins continuously going on, adjusts the height of second connecting rod, can carry out other experiments such as dice.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (7)
1. a probability demonstration device comprises a device body and is characterized in that the device body comprises a transparent circular ring, a coin storage cylinder and a coin throwing cylinder, the bottom of the coin storage cylinder is fixed on a second fixing plate which is fixed on the inner wall of a left side plate of a first box body, a first groove is arranged on the right side of the upper portion of the coin storage cylinder and is annular, pig hairs are arranged on the inner side of the first groove and are fixed on fixing rings which are symmetrical up and down, the fixing rings are fixed on the inner wall of the coin storage cylinder, the upper portion of the left side of the coin storage cylinder is communicated with a collecting pipe, the coin throwing cylinder is arranged on the rear side of the coin storage cylinder, a second groove is arranged on the left side of the upper portion of the coin throwing cylinder, a first baffle is fixed on the fixing ring on the rear side of the second groove, an ejection plate is arranged below the first baffle, an air valve is arranged in the middle of the lower portion of the ejection, the upper end of a second spring is fixed on the lower side surface of the ejection plate, the lower end of the second spring is fixed on the upper side surface of the gas tank, the right sides of the coin storage cylinder and the coin throwing cylinder are provided with rotating shafts, the outer side of the top of each rotating shaft is provided with a blade, a blade shell is a second box body, a switch is fixed on a first box body side plate on the right side of the same height of the second box body, the upper side surface of the second box body is provided with a second opening and a first opening from inside to outside in sequence, a ring plate is arranged in the second opening, a first spring is arranged below the ring plate, a first connecting rod is fixed on the inner side of the ring plate, a second connecting rod is fixed on the inner side of the.
2. A probability demonstration apparatus as claimed in claim 1, wherein: transparent ring bottom is fixed on first fixed plate, and first fixed plate middle part sets up the motorised valve, and the motorised valve setting is in transparent ring below, and the first fixed plate downside of motorised valve below sets up the collecting pipe.
3. A probability demonstration apparatus according to claim 2, wherein: the collecting pipe is a contraction pipe.
4. A probability demonstration apparatus as claimed in claim 1, wherein: the lower end of the rotating shaft is fixed on an output shaft of a motor in the motor box, and the bottom of the motor box is fixed on the second fixing plate.
5. A probability demonstration apparatus as claimed in claim 1, wherein: the first baffle is annular.
6. A probability demonstration apparatus as claimed in claim 1, wherein: and a second baffle is arranged on the outer wall of the coin storage barrel above the first open slot, the second baffle is annular, and the height of the second baffle is the same as that of the upper side of the first open slot.
7. a probability demonstration apparatus as claimed in claim 1, wherein: the upper side of the first open slot front half part is obliquely arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910910554.8A CN110570728B (en) | 2019-09-25 | 2019-09-25 | Probability demonstration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910910554.8A CN110570728B (en) | 2019-09-25 | 2019-09-25 | Probability demonstration device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110570728A true CN110570728A (en) | 2019-12-13 |
| CN110570728B CN110570728B (en) | 2021-10-22 |
Family
ID=68782275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910910554.8A Active CN110570728B (en) | 2019-09-25 | 2019-09-25 | Probability demonstration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110570728B (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4048731A (en) * | 1976-08-24 | 1977-09-20 | Anastasia Baguioro | Educational game apparatus |
| JP2000194257A (en) * | 1998-12-28 | 2000-07-14 | Tokai Univ | Probability statistic distribution display unit |
| CN204537550U (en) * | 2015-04-01 | 2015-08-05 | 白依川 | Higher mathematics demonstration device for probability |
| CN107067895A (en) * | 2017-05-24 | 2017-08-18 | 李虹阅 | A kind of Higher Mathematics Teaching probability demonstration teaching aid |
| CN107146502A (en) * | 2017-07-17 | 2017-09-08 | 山东交通学院 | Mathematical probabilities apparatus for demonstrating |
| CN206774037U (en) * | 2017-04-06 | 2017-12-19 | 江鑫媛 | A kind of mathematical probabilities demonstration device |
| CN206849339U (en) * | 2017-04-30 | 2018-01-05 | 崔凌云 | A kind of mathematical probabilities student experimenting is with throwing away coin device |
| CN207367441U (en) * | 2017-04-28 | 2018-05-15 | 黑龙江工业学院 | A kind of mathematical probabilities demonstration teaching aid |
| CN108961939A (en) * | 2018-08-27 | 2018-12-07 | 岳广琴 | A kind of higher mathematics demonstration device for probability |
| CN109272827A (en) * | 2018-11-09 | 2019-01-25 | 山东劳动职业技术学院（山东劳动技师学院） | Probability learning secondary presentation device |
| CN209216369U (en) * | 2018-06-07 | 2019-08-06 | 湖南人文科技学院 | A kind of Probability Teaching demonstrating appliance convenient to use |
| CN209216370U (en) * | 2018-06-07 | 2019-08-06 | 湖南人文科技学院 | A kind of ejection monetary apparatus Probability Teaching demonstration device |
-
2019
- 2019-09-25 CN CN201910910554.8A patent/CN110570728B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4048731A (en) * | 1976-08-24 | 1977-09-20 | Anastasia Baguioro | Educational game apparatus |
| JP2000194257A (en) * | 1998-12-28 | 2000-07-14 | Tokai Univ | Probability statistic distribution display unit |
| CN204537550U (en) * | 2015-04-01 | 2015-08-05 | 白依川 | Higher mathematics demonstration device for probability |
| CN206774037U (en) * | 2017-04-06 | 2017-12-19 | 江鑫媛 | A kind of mathematical probabilities demonstration device |
| CN207367441U (en) * | 2017-04-28 | 2018-05-15 | 黑龙江工业学院 | A kind of mathematical probabilities demonstration teaching aid |
| CN206849339U (en) * | 2017-04-30 | 2018-01-05 | 崔凌云 | A kind of mathematical probabilities student experimenting is with throwing away coin device |
| CN107067895A (en) * | 2017-05-24 | 2017-08-18 | 李虹阅 | A kind of Higher Mathematics Teaching probability demonstration teaching aid |
| CN107146502A (en) * | 2017-07-17 | 2017-09-08 | 山东交通学院 | Mathematical probabilities apparatus for demonstrating |
| CN209216369U (en) * | 2018-06-07 | 2019-08-06 | 湖南人文科技学院 | A kind of Probability Teaching demonstrating appliance convenient to use |
| CN209216370U (en) * | 2018-06-07 | 2019-08-06 | 湖南人文科技学院 | A kind of ejection monetary apparatus Probability Teaching demonstration device |
| CN108961939A (en) * | 2018-08-27 | 2018-12-07 | 岳广琴 | A kind of higher mathematics demonstration device for probability |
| CN109272827A (en) * | 2018-11-09 | 2019-01-25 | 山东劳动职业技术学院（山东劳动技师学院） | Probability learning secondary presentation device |
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| Publication number | Publication date |
|---|---|
| CN110570728B (en) | 2021-10-22 |
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| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Lv Jingjing Inventor after: Wang Xu Inventor before: Wang Xu |
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| CB03 | Change of inventor or designer information | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20210929 Address after: 610106 Sichuan province Chengdu City Shiling Town East Applicant after: CHENGDU University Address before: 450000 No. 103 Huashan Road, Zhongyuan District, Zhengzhou City, Henan Province Applicant before: Wang Xu |
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