CN210324774U - Probability presentation device for mathematical education - Google Patents
Probability presentation device for mathematical education Download PDFInfo
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- CN210324774U CN210324774U CN201920471492.0U CN201920471492U CN210324774U CN 210324774 U CN210324774 U CN 210324774U CN 201920471492 U CN201920471492 U CN 201920471492U CN 210324774 U CN210324774 U CN 210324774U
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- 238000005192 partition Methods 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 1
- BGOFCVIGEYGEOF-UJPOAAIJSA-N helicin Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1OC1=CC=CC=C1C=O BGOFCVIGEYGEOF-UJPOAAIJSA-N 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Abstract
A probability demonstration device for mathematical education effectively solves the problem that teachers are difficult to understand by students when writing and explaining on a blackboard at the present stage; the box body is internally provided with a baffle plate, the outer end of the baffle plate is higher than the inner end of the baffle plate, a plurality of partition plates are uniformly distributed on the baffle plate, a containing barrel positioned below the baffle plate is arranged in the center of the baffle plate, a first barrel hermetically connected with the containing barrel is fixed below the containing barrel, the middle part of the first barrel is hollow, the outside of the first barrel is rotatably connected with a second barrel, a jacking block capable of vertically sliding is arranged inside the first barrel, a spiral lug is arranged outside the jacking block, a jacking rod in contact with the lug is arranged inside the second barrel, a spring connected with the bottom of the box body is arranged at the lower part of the jacking block; the utility model discloses the structure is ingenious, characteristics such as easy operation, facilitate the use, improvement work efficiency that can be very big to the randomness is strong, very big improvement the accuracy of experimental result.
Description
Technical Field
The utility model relates to a mathematical education field, especially a probability presentation device for mathematical education.
Background
Probability and statistics are one of basic contents of mathematical teaching and are important components of modern mathematics, but often probability and statistics can not be well understood by students due to over abstract property in learning, especially, when a teacher explains a probability event, the teacher can only explain students in a blackboard writing teaching mode but can not understand thoroughly, auxiliary teaching tools aiming at probability and mathematical statistics are lacked in the teaching process, so that the learning efficiency of students is low, the learning efficiency of students can be effectively improved if a novel probability teaching demonstration device capable of more intuitively demonstrating probability correlation rules can be invented, and the probability teaching demonstration device for mathematical teaching is provided.
SUMMERY OF THE UTILITY MODEL
To the situation, for overcoming prior art's defect, the utility model provides a probability presentation device is used in mathematical education has solved the mr at present effectively and has write through the blackboard and explain the problem that the student is difficult to understand.
The technical scheme is as follows: the utility model provides a probability presentation device for mathematical education, the power distribution box comprises a box body, the box top is the proof box, the box below is the equipment box, be equipped with the baffle between proof box and the equipment box, the baffle outer end is higher than the inner, the equipartition has a plurality of baffles on the baffle, baffle central authorities are equipped with the receiver that is located the baffle below, the receiver below is fixed with the first drum with receiver sealing connection, first drum middle part is empty and outside rotation is connected with the second drum, the second drum outside is the gear, the equipment incasement be equipped with can with the incomplete gear of second drum external gear engagement, but the inside kicking block that is equipped with vertical gliding of first drum, the kicking block outside is equipped with spiral helicine lug, the inside ejector pin that contacts with the lug that is equipped with of second drum, the kicking block lower part is equipped with the spring of being connected with the bottom half, receiver central authorities are equipped with the launching tube, leave the.
The utility model discloses the structure is ingenious, characteristics such as easy operation, facilitate the use, improvement work efficiency that can be very big to the randomness is strong, very big improvement the accuracy of experimental result.
Drawings
Fig. 1 is a schematic view of the structure of the present invention.
Fig. 2 is a schematic view of the top view after the top plate is removed.
Fig. 3 is a bottom view of the top plate of the present invention.
Fig. 4 is a schematic view of the connection structure of the middle top block of the present invention.
Fig. 5 is a schematic view of the connection structure between the second cylinder and the incomplete gear according to the present invention.
Detailed Description
The following description of the present invention will be made in detail with reference to the accompanying drawings 1 to 5.
As can be seen from figures 1 to 5, a probability demonstration device for mathematical education comprises a box body 1, a test box is arranged above the box body 1, an equipment box is arranged below the box body 1, a baffle 2 is arranged between the test box and the equipment box, the outer end of the baffle 2 is higher than the inner end, a plurality of baffles 3 are uniformly distributed on the baffle 2, a storage barrel 4 positioned below the baffle 2 is arranged in the center of the baffle 2, a first barrel 5 hermetically connected with the storage barrel 4 is fixed below the storage barrel 4, the middle part of the first barrel 5 is hollow, the outside of the first barrel 5 is rotatably connected with a second barrel 6, a gear is arranged outside the second barrel 6, an incomplete gear 7 capable of being meshed with the outer gear of the second barrel 6 is arranged in the equipment box, a jacking block 8 capable of vertically sliding is arranged inside the first barrel 5, a spiral bump 9 is arranged outside the jacking block 8, a jacking rod 10 contacted with the bump 9 is arranged inside the second barrel 6, a spring 11 connected with the bottom of, the center of the containing barrel 4 is provided with a launching barrel 12, and a gap larger than the diameter of the small ball 23 is reserved between the launching barrel 12 and the bottom of the containing barrel 4.
The top of the test box is rotatably provided with a top plate 13, the rotating center of the top plate 13 and the center of the launching tube 12 are on the same straight line, a hemisphere 14 is fixed below the top plate 13, and the sphere center of the hemisphere 14 is not on the rotating center of the top plate 13.
The box body 1 is provided with a first motor 15 for controlling the rotation of the top plate 13.
The first cylinder 5 and the second cylinder 6 are rotatably connected through a bearing 16.
The incomplete gear 7 is connected with a second motor 17.
A counter 18 fixed on the inner wall of the storage barrel 4 is arranged between every two partition boards 3.
The kicking block 8 in be equipped with the cavity, sliding connection has connecting block 19 in the cavity, connecting block 19 is fixed in 1 bottom of box, is equipped with constant head tank 20 in the kicking block 8, connecting block 19 stretches into the cavity inside part outside and is equipped with locating pin 21, locating pin 21 constitutes kicking block 8 vertical gliding structure on connecting block 19 with the cooperation of constant head tank 20.
The top of the top block 8 is provided with a groove 22.
The diameter of the top of the launch canister 12 is smaller than that of the bottom, and the diameter of the top opening is larger than that of the small ball 23.
When the utility model is used in a concrete way,
starting a first motor 15 and a second motor 17, putting a small ball 23 into the box body 1, enabling the small ball 23 to slide into the containing barrel 4 along the baffle 2 in an inclined mode, then enabling the small ball to slide into a groove 22 in the top of the ejector block 8, enabling the second motor 17 to rotate the incomplete gear 7 to drive the second cylinder 6 to rotate, enabling the ejector rod 10 to be in contact with the lug 9 and enabling the ejector rod 10 to be located above the lug 9, enabling the ejector rod 10 to press the lug 9 downwards in the rotating process, enabling the ejector block 8 to move downwards under the pressure effect, enabling the small ball 23 to move downwards at the same time, enabling the lug 9 to be provided with a circle outside the ejector block 8, enabling the ejector block 8 to move upwards quickly under the effect of the spring 11 to jack up the small ball 23 and throw out from an opening above the launching barrel 12 when the ejector rod 10 is separated from the top end of the lug 9, enabling the small ball 23 to impact on the hemisphere 14 because the center of the small ball 23 and the center of the small ball 14 are not in a straight line, at the moment, the small ball 23 is rebounded to one side of the hemisphere 14 by the hemisphere 14, so that the small ball 23 enters a space formed between the two random partition plates 3, then slides onto the top block 8 again, and passes through the counter 18 in the space in the sliding process to count, when the small ball 23 is thrown out, the ejector rod 10 is disengaged from the lug 9, after the top block 8 moves upwards, the ejector rod 10 is contacted with the lug 9 again, and at the moment, the ejector rod 10 is located at the lower end of the lug 9 so as to throw out the small ball 23 next time.
The rotation of the top plate 13 is controlled by the first motor 15, the rotation of the first motor 15 and the rotation of the second motor 17 are asynchronous, namely the rotating positions of the hemispheroid 14 are inconsistent when the small ball 23 is thrown out every time, so that the randomness of the falling point of the small ball 23 can be ensured.
The second cylinder 6 is meshed with the incomplete gear 7, the second motor 17 drives the incomplete gear 7 to rotate, when the incomplete gear 7 is meshed with the outer gear of the second cylinder 6, the second cylinder 6 and the incomplete gear 7 rotate simultaneously, when the incomplete gear 7 rotates to a toothless part, the small ball 23 is just in a popup state at the moment, the second cylinder 6 does not rotate, when the small ball 23 falls into the jacking block 8 again, the incomplete gear 7 is meshed with the second cylinder 6 again, therefore, the whole test process can be more accurate, and unnecessary time is not wasted.
After the test is finished, the numbers on the counters 18 are counted, so that probability statistics can be carried out, students and teachers can control the rotating speeds of the first motor 15 and the second motor 17, and the falling point of the small ball 23 can be found to be irrelevant to the rotating speeds of the motors after multiple tests.
The diameter of the upper part of the launching tube 12 is smaller than that of the lower part, and the opening of the upper part is larger than that of the small ball 23, so that the small ball 23 can be prevented from accidentally rebounding when being thrown out, and the smooth proceeding of the test is ensured.
The utility model discloses the structure is ingenious, characteristics such as easy operation, facilitate the use, improvement work efficiency that can be very big to the randomness is strong, very big improvement the accuracy of experimental result.
Claims (9)
1. A probability demonstration device for mathematical teaching comprises a box body (1) and is characterized in that a test box is arranged above the box body (1), an equipment box is arranged below the box body (1), a baffle (2) is arranged between the test box and the equipment box, the outer end of the baffle (2) is higher than the inner end, a plurality of partition plates (3) are uniformly distributed on the baffle (2), a containing barrel (4) positioned below the baffle (2) is arranged in the center of the baffle (2), a first cylinder (5) hermetically connected with the containing barrel (4) is fixed below the containing barrel (4), the middle of the first cylinder (5) is hollow, the outside of the first cylinder is rotatably connected with a second cylinder (6), a gear is arranged outside the second cylinder (6), an incomplete gear (7) capable of being meshed with an outer gear of the second cylinder (6) is arranged in the equipment box, a top block (8) capable of vertically sliding is arranged in the first cylinder (5), and a spiral convex block (9) is arranged outside the top block, an ejector rod (10) in contact with the bump (9) is arranged inside the second cylinder (6), a spring (11) connected with the bottom of the box body (1) is arranged on the lower portion of the ejector block (8), a launching cylinder (12) is arranged in the center of the storage cylinder (4), and a gap larger than the diameter of the small ball (23) is reserved between the launching cylinder (12) and the bottom of the storage cylinder (4).
2. The probability demonstration device for mathematics teaching as claimed in claim 1, wherein the top of the test chamber is rotatably provided with a top plate (13), the rotation center of the top plate (13) is collinear with the center of the launching tube (12), a hemisphere (14) is fixed below the top plate (13), and the sphere center of the hemisphere (14) is not on the rotation center of the top plate (13).
3. The probability demonstration device for mathematical education as claimed in claim 2 wherein said box body (1) is provided with a first motor (15) for controlling the rotation of the top plate (13).
4. The probability demonstration device for mathematical education as claimed in claim 1 wherein the first cylinder (5) and the second cylinder (6) are rotatably connected via a bearing (16).
5. A probability demonstration device for mathematics as claimed in claim 1, characterised in that said incomplete gear (7) is connected to a second motor (17).
6. A probability demonstration device for mathematics as claimed in claim 1, wherein a counter (18) fixed to the inner wall of the container (4) is provided between each two of said partitions (3).
7. The probability demonstration device for mathematics teaching as claimed in claim 1, wherein said top block (8) is internally provided with a cavity, a connecting block (19) is slidably connected in the cavity, the connecting block (19) is fixed at the bottom of the box body (1), a positioning groove (20) is arranged in the top block (8), a positioning pin (21) is arranged at the outer side of the part of the connecting block (19) extending into the cavity, and the positioning pin (21) and the positioning groove (20) are matched to form a structure that the top block (8) vertically slides on the connecting block (19).
8. A probability demonstration device for mathematics as claimed in claim 1, wherein the top of said top block (8) is provided with a groove (22).
9. The probability demonstration device for mathematics as claimed in claim 1, wherein the diameter of the top of said launch canister (12) is smaller than the diameter of the bottom thereof, and the diameter of the top opening is larger than the diameter of the small ball (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920471492.0U CN210324774U (en) | 2019-04-09 | 2019-04-09 | Probability presentation device for mathematical education |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920471492.0U CN210324774U (en) | 2019-04-09 | 2019-04-09 | Probability presentation device for mathematical education |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210324774U true CN210324774U (en) | 2020-04-14 |
Family
ID=70135643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920471492.0U Expired - Fee Related CN210324774U (en) | 2019-04-09 | 2019-04-09 | Probability presentation device for mathematical education |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210324774U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113870662A (en) * | 2021-09-17 | 2021-12-31 | 广东有念文化产业有限公司 | Demonstration method of nonlinear conceptual relationship |
-
2019
- 2019-04-09 CN CN201920471492.0U patent/CN210324774U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113870662A (en) * | 2021-09-17 | 2021-12-31 | 广东有念文化产业有限公司 | Demonstration method of nonlinear conceptual relationship |
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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: 20200414 Termination date: 20210409 |