CN212541663U - Probability statistics device for mathematical education - Google Patents
Probability statistics device for mathematical education Download PDFInfo
- Publication number
- CN212541663U CN212541663U CN202021016217.9U CN202021016217U CN212541663U CN 212541663 U CN212541663 U CN 212541663U CN 202021016217 U CN202021016217 U CN 202021016217U CN 212541663 U CN212541663 U CN 212541663U
- Authority
- CN
- China
- Prior art keywords
- fixedly connected
- probability
- stop lever
- rod
- mathematical education
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000003756 stirring Methods 0.000 claims abstract description 25
- 230000007246 mechanism Effects 0.000 claims abstract description 18
- 238000002474 experimental method Methods 0.000 abstract description 8
- 239000003086 colorant Substances 0.000 abstract description 3
- 230000007087 memory ability Effects 0.000 abstract description 3
- 230000000007 visual effect Effects 0.000 abstract description 3
- 238000000926 separation method Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000019771 cognition Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000013178 mathematical model Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Landscapes
- Mixers Of The Rotary Stirring Type (AREA)
Abstract
The utility model discloses a probability statistical device for mathematical education, which comprises a probability statistical device main body and an inner cavity, wherein the probability statistical device comprises a stirring mechanism and a stop lever mechanism, the stirring mechanism comprises a fixed plate, the fixed plate is fixedly connected with the inner wall surface of the inner cavity, a through hole is arranged on one side surface of the fixed plate, a driven rod is arranged in the through hole, a first bevel gear is fixedly connected with the top surface of the driven rod, a connecting round block is fixedly connected with the bottom surface of the driven rod, the spheres with a plurality of numbers and colors can be stirred, thereby enlarging the experimental range, when the probability statistical experiment is carried out, the spheres are uniformly stirred firstly, when the objects rotate, the visual sense of students can be improved, the spheres can be attracted by the rotating objects, the thinking and the memory ability of the students can be improved, and the unevenness of the placing of people can be avoided, influence the randomness that the spheroid dropped, statistics is more accurate.
Description
Technical Field
The utility model belongs to the technical field of mathematical education, concretely relates to probability statistics device for mathematical education.
Background
Applied mathematics is the general term of the mathematical disciplines or branches with strong applicability, the main learning categories include analytics, algebra, geometry, probability theory, physics, mathematical models, mathematical experiments, computer foundation, numerical methods, mathematical history and the like, the probability theory is the mathematical branch for researching the quantity rule of random phenomena, the random phenomena are relative to the decisive phenomena, the phenomenon that a certain result must occur under certain conditions is called a decisive phenomenon, and in the teaching of probability, since the beginners can not understand the principle of probability and the problem of probability generation, a probability teaching demonstration device is needed when the probability explanation is carried out, demonstrate through the emergence of audio-visual certain thing, make the observer can audio-visual understanding the production process of probability, be favorable to the cognition to the probability more, current probability statistics device for mathematical education still has various problems.
The utility model discloses a probability statistics device of applied mathematics like the utility model discloses of the grant bulletin number CN210006301U, it has realized pressing the movable block and ejecting away the spheroid via the spring telescopic link, touch the contact-type inductor to count through miniature counter, need not artifical count and statistics, the burden effect when alleviating teacher's demonstration, but the use quantity of spheroid is few when using, and need to launch many times and just can acquire more accurate probability statistics numerical value, the experiment is consuming time hard, be not convenient for the classroom in the effective time go on operate; when placing the spheroid experiment simultaneously, easily cause and put the inequality to influence probability statistics randomness, influence the problem of statistical result, for this reason we provide a probability statistics device for mathematical education.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a probability statistical device for mathematical education, which solves the problems that the use quantity of the spheres proposed in the background technology is small, and the spheres need to be ejected for many times to obtain more accurate probability statistical values, the experiment is time-consuming and labor-consuming, and the operation is inconvenient for the classroom within the effective time; when placing the spheroid experiment simultaneously, easily cause and put the inequality to influence probability statistics randomness, influence the problem of statistical result.
In order to achieve the above object, the utility model provides a following technical scheme: a probability statistic device for mathematical education comprises a probability statistic device body and an inner cavity, wherein the probability statistic device comprises a stirring mechanism and a stop lever mechanism, the stirring mechanism comprises a fixed plate, the fixed plate is fixedly connected with the inner wall surface of the inner cavity, a through hole is formed in one side surface of the fixed plate, a driven rod is arranged inside the through hole, a first bevel gear is fixedly connected with the top end surface of the driven rod, a connecting round block is fixedly connected with the bottom end surface of the driven rod, a stirring rod is connected with the outer surface of the connecting round block, a limiting block is fixedly connected with the outer surface of the driven rod, a first limiting groove is formed in the inner wall surface of the through hole relative to the outer surface of the limiting block, a fixed rod is fixedly connected with the top end surface of the inner cavity, a bearing is fixedly connected with the bottom end surface, and a second bevel gear is fixedly connected to the surface of one end of the driving rod, the outer surface of the second bevel gear is in spiral connection with the surface of the first bevel gear, and a rocker is fixedly connected to the other end of the driving rod.
Preferably, the stop lever mechanism comprises second limit grooves formed in two sides of the probability statistics device main body, a first stop lever is arranged inside the second limit grooves, the top end of the first stop lever is located inside the inner cavity, a fixed block is fixedly connected to the outer surface of the first stop lever, and a first spring is connected to the surface of one side of the fixed block.
Preferably, the outer surface of the limiting block is connected with the inner wall surface of the first limiting groove in a clamping manner, and the driving rod penetrates through the inside of the probability statistic device main body.
Preferably, the number of the stirring rods is three, and the stirring rods are annularly distributed on the outer surface of the connecting round block at equal intervals.
Preferably, an inner groove is formed in one side surface of the probability statistics device main body, a second spring is fixedly connected to the inner wall surface of the inner groove, a sliding block is fixedly connected to the other end of the second spring, a second stop lever is fixedly connected to the bottom end surface of the sliding block, and a resisting groove is formed in one side surface of the first stop lever relative to the outer surface of the second stop lever.
Preferably, one side surface of the first spring is fixedly connected with the surface of the fixed block, and the other side surface of the first spring is fixedly connected with the inner wall surface of the second limit groove.
Preferably, the outer surface of the second stop lever is connected with the inner wall surface of the abutting groove in a clamping manner, and the section of the second stop lever is circular.
Compared with the prior art, the beneficial effects of the utility model are that:
1. through the rabbling mechanism of design, can stir the spheroid of a plurality of quantity and multiple colour to increase the experimental range, can be when probability statistics experiment, evenly stir the spheroid earlier, and when the object rotated, student's visual sense can obtain improving, more can be attracted by pivoted object, improves student's thinking and memory ability, also can avoid the artificial inequality of putting simultaneously, influences the randomness that the spheroid dropped, and statistics is more accurate.
2. Through the pin mechanism of design, can make the spheroid of multiple colour be in the surface of first pin, in the twinkling of an eye of releasing first pin, can be free not fall under external force interference to guarantee the fairness that the spheroid falls, make the result of statistics more be close to the fact.
Drawings
FIG. 1 is a sectional view of the main structure of the probability statistic device for mathematical education of the utility model;
FIG. 2 is a sectional view of the bevel gear connection structure according to the present invention;
FIG. 3 is an enlarged schematic view of the structure at A in FIG. 1 according to the present invention;
FIG. 4 is an enlarged schematic view of the structure at B in FIG. 1 according to the present invention;
FIG. 5 is a partial cross-sectional view of the fixed state of the stop lever according to the present invention;
in the figure: 1. a probabilistic statistical device body; 2. an inner cavity; 3. a fixing plate; 4. a through hole; 5. a driven lever; 6. connecting the round blocks; 7. a stirring rod; 8. a first bevel gear; 9. a second bevel gear; 10. a driving lever; 11. fixing the rod; 12. a bearing; 13. a rocker; 14. a limiting block; 15. a first limit groove; 16. a second limit groove; 17. a first bar; 18. a first spring; 19. a fixed block; 20. an inner tank; 21. a second spring; 22. a slider; 23. a second bar; 24. and abutting against the groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides a technical solution: a probability statistic device for mathematical education comprises a probability statistic device body 1 and an inner cavity 2, the probability statistic device comprises a stirring mechanism and a stop lever mechanism, the stirring mechanism comprises a fixing plate 3, the fixing plate 3 is fixedly connected with the inner wall surface of the inner cavity 2, a through hole 4 is formed in one side surface of the fixing plate 3, a driven lever 5 is arranged inside the through hole 4, a first bevel gear 8 is fixedly connected with the top end surface of the driven lever 5, a connecting round block 6 is fixedly connected with the bottom end surface of the driven lever 5, a stirring lever 7 is connected with the outer surface of the connecting round block 6, a limiting block 14 is fixedly connected with the outer surface of the driven lever 5, a first limiting groove 15 is formed in the inner wall surface of the through hole 4 relative to the outer surface of the limiting block 14, a fixing lever 11 is fixedly connected with the top end surface of the inner cavity 2, a bearing, a second bevel gear 9 is fixedly connected to the surface of one end of the driving rod 10, the outer surface of the second bevel gear 9 is in spiral connection with the surface of the first bevel gear 8, and a rocker 13 is fixedly connected to the other end of the driving rod 10.
In order to facilitate the falling of the sphere blocked by the first stop lever, in this embodiment, preferably, the stop lever mechanism includes second limiting grooves 16 formed in two sides of the probability statistic device main body 1, a first stop lever 17 is arranged inside the second limiting grooves 16, the top end of the first stop lever 17 is located inside the inner cavity 2, a fixing block 19 is fixedly connected to the outer surface of the first stop lever 17, and a first spring 18 is connected to one side surface of the fixing block 19.
In order to facilitate the rotation limitation of the driven wheel, in this embodiment, preferably, the outer surface of the limiting block 14 is in snap-fit connection with the inner wall surface of the first limiting groove 15, and the driving rod 10 penetrates through the inside of the probability statistic device main body 1.
In order to facilitate uniform stirring, in the present embodiment, it is preferable that the number of the stirring rods 7 is three, and the stirring rods 7 are disposed at equal intervals and distributed annularly on the outer surface of the joining circular block 6.
In order to facilitate the fixing and limiting of the first stop lever, in this embodiment, preferably, an inner groove 20 is formed in a side surface of the probability statistic device main body 1, a second spring 21 is fixedly connected to an inner wall surface of the inner groove 20, a slider 22 is fixedly connected to the other end of the second spring 21, a second stop lever 23 is fixedly connected to a bottom end surface of the slider 22, and a supporting groove 24 is formed in a side surface of the first stop lever 17 opposite to an outer surface of the second stop lever 23.
In order to facilitate the elastic force of the spring to resist the contraction, in this embodiment, it is preferable that one side surface of the first spring 18 is fixedly connected to the surface of the fixing block 19, and the other side surface of the first spring 18 is fixedly connected to the inner wall surface of the second limiting groove 16.
In order to facilitate the engagement and fixation, in this embodiment, it is preferable that the outer surface of the second stopper 23 is engaged with the inner wall surface of the abutting groove 24, and the cross section of the second stopper 23 is circular.
The utility model discloses a theory of operation and use flow: when the device is used, a plurality of quantities of balls with various colors can be firstly placed in the inner cavity 2, then the rocker 13 is rotated to drive the rocker 13 to rotate, the outer surface of the rocker 13 and the inner wall of the bearing 12 rotate, the fixing rod 11 is utilized to play a supporting role, the second bevel gear 9 fixedly connected with the front end of the driving rod 10 also rotates to drive the first bevel gear 8 to rotate, so that the driven rod 5 rotates along with the rotation, the fixing plate 3 is fixed in the inner wall of the inner cavity 2, the limiting block 14 is utilized to rotationally slide on the inner wall of the first limiting groove 15 to realize the limiting support of the driven rod 5, thereby the position of the driven rod 5 is fixed, the stirring rod 7 arranged at the bottom end of the driven rod 5 rotates, when the first stop rod is blocked, the balls are positioned in the inner cavity 2, the rotation of the stirring rod 7 is utilized, a plurality of quantities of balls with various colors can be stirred, can be when carrying out the probability statistics experiment, can be with the spheroid stirring, and when the object rotated, student's visual sense can obtain improving, more can be attracted by pivoted object, improves student's thought memory ability, also can avoid artificial putting the inequality simultaneously, improves the randomness that the spheroid dropped, and statistics is more accurate.
When the device is used, after a ball is stirred by a stirring mechanism, the first stop lever 17 on the outer surface of the main body 1 of the probability statistic device can be pulled to drive the fixed block 19 to move, so that the first spring 18 can be compressed, the top end of the first stop lever 17 is separated from the inner part of the inner cavity 2, finally, the ball which is uniformly stirred loses the separation of the surface of the first stop lever 17 and directly falls into the lower end of the statistic device, the second stop lever 23 is abutted to the inner groove 20 under the elastic action of the second spring 21, so that the second stop lever 23 is positioned on the surface of the first stop lever 17, after the first stop lever 17 is continuously pulled, after the top end of the second stop lever 23 is parallel to the inner wall of the abutting groove 24, the elastic force of the second spring 21 can be utilized to abut the second stop lever 23 to the inner wall of the abutting groove 24 to be clamped and fixed, so that the first stop lever 17 is prevented from rebounding and moving by the elastic force of the first, first pin 17 must continuously stimulate, lead to the problem of hand ache, utilize the removal of the first pin 17 of easy separation of block, when needing the separation of first pin 17, can carry and draw inside groove 20, make second pin 23 break away from the inner wall that supports groove 24, the automatic shrink of the first spring 18 of accessible, the cooperation of first pin 17 of both sides, first pin 17 forms the separation spheroid state automatically, the operation is simpler, the flexibility is strong, it is more convenient to use, can guarantee not receive external force to disturb down the free whereabouts of spheroid ability, make the result of statistics more approach to the fact.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a probability statistics device for mathematical education, includes probability statistics device main part (1) and inner chamber (2), its characterized in that: the probability statistic device comprises a stirring mechanism and a stop lever mechanism, the stirring mechanism comprises a fixing plate (3), the fixing plate (3) is fixedly connected with the surface of the inner wall of an inner cavity (2), a through hole (4) is formed in the surface of one side of the fixing plate (3), a driven rod (5) is arranged inside the through hole (4), a first bevel gear (8) is fixedly connected with the surface of the top end of the driven rod (5), a linking round block (6) is fixedly connected with the surface of the bottom end of the driven rod (5), a stirring rod (7) is connected with the outer surface of the linking round block (6), a limiting block (14) is fixedly connected with the outer surface of the driven rod (5), a first limiting groove (15) is formed in the surface of the inner wall of the through hole (4) relative to the outer surface of the limiting block (14), and a fixing rod (11), the bottom end surface of the fixed rod (11) is fixedly connected with a bearing (12), a driving rod (10) is arranged inside the bearing (12), one end surface of the driving rod (10) is fixedly connected with a second bevel gear (9), the outer surface of the second bevel gear (9) is in spiral connection with the surface of the first bevel gear (8), and the other end of the driving rod (10) is fixedly connected with a rocker (13).
2. The probability statistic device for mathematical education as claimed in claim 1, wherein: the stop lever mechanism comprises second limit grooves (16) formed in two sides of the probability statistics device main body (1), first stop levers (17) are arranged in the second limit grooves (16), the top ends of the first stop levers (17) are located in the inner cavity (2), fixed blocks (19) are fixedly connected to the outer surfaces of the first stop levers (17), and first springs (18) are connected to one side surfaces of the fixed blocks (19).
3. The probability statistic device for mathematical education as claimed in claim 1, wherein: the outer surface of the limiting block (14) is connected with the inner wall surface of the first limiting groove (15) in a clamping mode, and the driving rod (10) penetrates through the inside of the probability statistics device main body (1).
4. The probability statistic device for mathematical education as claimed in claim 1, wherein: the number of the stirring rods (7) is three, and the stirring rods (7) are annularly distributed on the outer surface of the connecting round block (6) at equal intervals.
5. The probability statistic device for mathematical education as claimed in claim 2, wherein: an inner groove (20) is formed in one side surface of the probability statistics device main body (1), a second spring (21) is fixedly connected to the inner wall surface of the inner groove (20), a sliding block (22) is fixedly connected to the other end of the second spring (21), a second stop lever (23) is fixedly connected to the bottom end surface of the sliding block (22), and a supporting groove (24) is formed in one side surface of the first stop lever (17) relative to the outer surface of the second stop lever (23).
6. The probability statistic device for mathematical education as claimed in claim 2, wherein: one side surface of the first spring (18) is fixedly connected with the surface of the fixed block (19), and the other side surface of the first spring (18) is fixedly connected with the inner wall surface of the second limiting groove (16).
7. The apparatus for probability statistics in mathematics as claimed in claim 5, wherein: the outer surface of the second stop lever (23) is connected with the inner wall surface of the abutting groove (24) in a clamping mode, and the section of the second stop lever (23) is circular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021016217.9U CN212541663U (en) | 2020-06-05 | 2020-06-05 | Probability statistics device for mathematical education |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021016217.9U CN212541663U (en) | 2020-06-05 | 2020-06-05 | Probability statistics device for mathematical education |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212541663U true CN212541663U (en) | 2021-02-12 |
Family
ID=74640056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021016217.9U Expired - Fee Related CN212541663U (en) | 2020-06-05 | 2020-06-05 | Probability statistics device for mathematical education |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212541663U (en) |
-
2020
- 2020-06-05 CN CN202021016217.9U patent/CN212541663U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206058649U (en) | A kind of College Maths probability event teaching demonstration device | |
| CN206657538U (en) | A kind of demonstration device for probability for mathematical education | |
| CN209691180U (en) | A kind of student instruction demonstration device for probability | |
| CN212541663U (en) | Probability statistics device for mathematical education | |
| CN209168495U (en) | A kind of senior middle school physics teaching inclined plane demonstrating device convenient for Students ' Problem-solving | |
| CN109903644B (en) | Interactive teaching device applied to colleges and universities | |
| CN204557872U (en) | A kind of mathematical probabilities demonstration device | |
| CN214410447U (en) | Primary school science physics capillarity presentation device | |
| CN212966686U (en) | Probability normal distribution demonstration device | |
| CN108172073A (en) | A kind of interactive exerciser imparted knowledge to students with primary school mathematics oeprator | |
| CN212302834U (en) | Interesting English teaching competition equipment | |
| CN209607165U (en) | A kind of information management speciality teaching demonstration device | |
| CN204010425U (en) | A kind of primary school mathematics apparatus for demonstrating | |
| CN210324774U (en) | Probability presentation device for mathematical education | |
| CN113432018A (en) | College student effective employment education classification guiding device | |
| CN206133952U (en) | Word combination order | |
| CN205281916U (en) | Physical teaching is with collision ball | |
| CN207302367U (en) | A kind of recreational English teaching device | |
| CN210378005U (en) | Full-automatic arrangement demonstration and random number synthesis device | |
| CN204650774U (en) | Electrical equipment teaching card link plate | |
| CN107644573B (en) | Isochronous circle physical teaching presentation device | |
| CN205428312U (en) | Probability theory principle presentation device | |
| CN210748175U (en) | English teaching equipment | |
| CN213400168U (en) | Physical gravity experiment simulation device | |
| CN206421701U (en) | A kind of College Maths Probability Teaching apparatus for demonstrating |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210212 |