CN111127983A - Mathematical probability demonstration device - Google Patents
Mathematical probability demonstration device Download PDFInfo
- Publication number
- CN111127983A CN111127983A CN202010060763.0A CN202010060763A CN111127983A CN 111127983 A CN111127983 A CN 111127983A CN 202010060763 A CN202010060763 A CN 202010060763A CN 111127983 A CN111127983 A CN 111127983A
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- ball
- rocker
- clamping disc
- belt pulley
- bin
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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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- Physics & Mathematics (AREA)
- Pure & Applied Mathematics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Mathematical Physics (AREA)
- Computational Mathematics (AREA)
- Engineering & Computer Science (AREA)
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- Business, Economics & Management (AREA)
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Abstract
The invention discloses a mathematical probability demonstration device which comprises a base, a support plate, a number ball bin, a ball inlet, a ball outlet, a disturbing slurry, a number ball, a rocker, a crank, a ball clamping disc, a ball clamping port, a rocker belt pulley, a ball clamping disc belt pulley, a belt and a ball collecting pipe.
Description
Technical Field
The invention relates to a mathematics teaching aid, in particular to a mathematics probability demonstration device.
Background
Probability, also known as "probability", is the magnitude of the probability that a random event occurs (likelihood). Random events are events that may or may not occur under the same conditions. For example, a random drawing of a good from a batch of good and bad merchandise, the "drawing of good" is a random event. Let n times of experiments and observations of a random phenomenon, where the event a occurs m times, i.e. its frequency of occurrence is m/n. After a large number of trial and error runs, often m/n is closer and closer to a certain constant (this argument proves to be detailed in bernoulli's law). The constant is the probability of occurrence of event a, and is usually represented by p (a). In the mathematical education, in order to deepen the impression for the student, can adopt the device demonstration probability, probability demonstration device among the prior art is electronic, also has manually, but mostly is difficult for embodying less probability of following, therefore, exists the space of improving.
Disclosure of Invention
The present invention has been made to solve the above problems, and an object of the present invention is to provide a mathematical probability demonstration apparatus.
The invention realizes the purpose through the following technical scheme:
the invention comprises a base, a support plate, a number ball bin, a ball inlet, a ball outlet, a beating slurry, a number ball, a rocker, a crank, a ball clamping disc, a ball clamping port, a rocker belt pulley, a ball clamping disc belt pulley, a belt and a ball collecting pipe, wherein the lower end of the support plate is fixed on the base, one side of the number ball bin is fixed on one side of the upper section of the support plate, the upper end of the number ball bin is provided with the ball inlet communicated with the inside and the outside, the lower end of the number ball bin is provided with the ball outlet communicated with the inside and the outside, the size of the ball outlet is used for accommodating one number ball to pass through, the beating slurry is positioned in the number ball bin, the number ball is positioned in the number ball bin, the rocker simultaneously passes through the middle part of the side surface of the number ball bin and the support plate, one end of the rocker is fixedly connected with the middle part of the beating slurry, the other end of the rocker is rotatably connected with the crank, the middle part of one side of the ball clamping disc passes through the lower section, the circumference of the ball clamping disc is provided with the ball clamping port, the size of the ball clamping port accommodates one ball, the other end of a rotating shaft connected with the ball clamping disc is fixedly connected with the middle part of the ball clamping disc belt pulley, the rotating shaft of the rocker is fixedly connected with the rocker belt pulley, the rocker belt pulley is in transmission connection with the ball clamping disc belt pulley through a belt, the ball clamping disc is positioned below a ball outlet of the ball bin, and the ball collecting pipe is positioned below the ball clamping disc.
Preferably, the diameter of the ball clamping disc pulley is larger than that of the rocker pulley.
The invention has the beneficial effects that:
the invention relates to a mathematical probability demonstration device, which can show smaller follow-up probability, when a rocker is shaken, a disturbing paddle stirs a number ball in a number ball bin to be disturbed and falls into a ball outlet, the ball does not directly fall out at the moment, the number ball can fall into a ball clamping port after a ball clamping disc rotates for a circle, the number ball falls into a ball collecting pipe after the ball clamping disc rotates for half a circle, and the diameter of a rocker belt pulley is smaller than that of a ball clamping disc belt pulley, so that the rotating speed of the ball clamping disc is lower than that of the disturbing paddle, and the disturbing paddle can stir for many times after a ball falls out, thereby realizing larger follow-up probability and being beneficial to teaching demonstration.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic side view of the present invention.
In the figure: 1-base, 2-support plate, 3-ball bin, 4-ball inlet, 5-ball outlet, 6-disturbing paddle, 7-ball, 8-rocker, 9-crank, 10-ball clamping disc, 11-ball clamping port, 12-rocker belt pulley, 13-ball clamping disc belt pulley, 14-belt and 15-ball collecting pipe.
Detailed Description
The invention will be further described with reference to the accompanying drawings in which:
as shown in fig. 1: the invention comprises a base 1, a support plate 2, a number ball bin 3, a ball inlet 4, a ball outlet 5, a beating paddle 6, a number ball 7, a rocker 8, a crank 9, a ball clamping disc 10, a ball clamping port 11, a rocker belt pulley 12, a ball clamping disc belt pulley 13, a belt 14 and a ball collecting pipe 15, wherein the lower end of the support plate is fixed on the base, one side of the number ball bin is fixed on one side of the upper section of the support plate, the upper end of the number ball bin is provided with the ball inlet communicated with the inside and the outside, the lower end of the number ball bin is provided with the ball outlet communicated with the inside and the outside, the size of the ball outlet is used for accommodating one number ball to pass through, the beating paddle is positioned in the number ball bin, the number ball is positioned in the number ball bin, the rocker simultaneously penetrates through the middle part of the side surface of the number ball bin and the support plate, one end of the rocker is fixedly connected with the middle part of the beating paddle, and the other end of the rocker is rotatably connected, the middle part of one side of the ball clamping disc penetrates through the lower section of the support plate through a rotating shaft and is connected in a rotating mode, the ball clamping port is formed in the circumference of the ball clamping disc, one number ball is contained in the size of the ball clamping port, the other end of the rotating shaft connected with the ball clamping disc is fixedly connected with the middle part of the ball clamping disc belt pulley, the rocker belt pulley is fixedly connected with the rotating shaft of the rocker, the rocker belt pulley is connected with the ball clamping disc belt pulley in a transmission mode through the belt, the ball clamping disc is located below the ball outlet of the number ball bin, and the ball collecting pipe is located below the ball clamping disc.
Preferably, the diameter of the ball clamping disc pulley is larger than that of the rocker pulley.
The foregoing shows and describes the general principles and features of the present invention, together with the advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (2)
1. A mathematical probability demonstration apparatus, characterized by: the device comprises a base, a support plate, a number ball bin, a ball inlet, a ball outlet, a disturbing slurry, a number ball, a rocker, a crank, a ball clamping disc, a ball clamping port, a rocker belt pulley, a ball clamping disc belt pulley, a belt and a ball collecting pipe, wherein the lower end of the support plate is fixed on the base, one side of the number ball bin is fixed on one side of the upper section of the support plate, the upper end of the number ball bin is provided with the ball inlet which is communicated with the inside and the outside, the lower end of the number ball bin is provided with the ball outlet which is communicated with the inside and the outside, the size of the ball outlet is used for accommodating one number ball to pass through, the disturbing slurry is positioned in the number ball bin, the number ball is positioned in the number ball bin, the rocker simultaneously penetrates through the middle part of the side surface of the number ball bin and the support plate, one end of the rocker is fixedly connected with the middle part of the disturbing slurry, the other end of the rocker is rotatably connected with the crank, one side of the ball clamping disc penetrates through a, the circumference of the ball clamping disc is provided with the ball clamping port, the size of the ball clamping port accommodates one ball, the other end of a rotating shaft connected with the ball clamping disc is fixedly connected with the middle part of the ball clamping disc belt pulley, the rotating shaft of the rocker is fixedly connected with the rocker belt pulley, the rocker belt pulley is in transmission connection with the ball clamping disc belt pulley through a belt, the ball clamping disc is positioned below a ball outlet of the ball bin, and the ball collecting pipe is positioned below the ball clamping disc.
2. The mathematical probability presentation device of claim 1, wherein: the diameter of the ball clamping disc belt pulley is larger than that of the rocker belt pulley.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010060763.0A CN111127983A (en) | 2020-01-19 | 2020-01-19 | Mathematical probability demonstration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010060763.0A CN111127983A (en) | 2020-01-19 | 2020-01-19 | Mathematical probability demonstration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111127983A true CN111127983A (en) | 2020-05-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010060763.0A Pending CN111127983A (en) | 2020-01-19 | 2020-01-19 | Mathematical probability demonstration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111127983A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000194257A (en) * | 1998-12-28 | 2000-07-14 | Tokai Univ | Probability statistic distribution display unit |
| CN107025827A (en) * | 2017-06-08 | 2017-08-08 | 商丘工学院 | A kind of applied mathematics probability event teaching method and device |
| CN206558067U (en) * | 2017-02-08 | 2017-10-13 | 高建全 | A kind of College Maths probability event teaching demonstration device |
| CN206574325U (en) * | 2017-03-17 | 2017-10-20 | 孙正雨 | A kind of mathematical education demonstration device for probability |
| CN207602086U (en) * | 2017-09-25 | 2018-07-10 | 河北机电职业技术学院 | A kind of College Maths probability event teaching demonstration device |
| CN111145617A (en) * | 2020-01-18 | 2020-05-12 | 西安文理学院 | Mathematical probability demonstration device |
-
2020
- 2020-01-19 CN CN202010060763.0A patent/CN111127983A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000194257A (en) * | 1998-12-28 | 2000-07-14 | Tokai Univ | Probability statistic distribution display unit |
| CN206558067U (en) * | 2017-02-08 | 2017-10-13 | 高建全 | A kind of College Maths probability event teaching demonstration device |
| CN206574325U (en) * | 2017-03-17 | 2017-10-20 | 孙正雨 | A kind of mathematical education demonstration device for probability |
| CN107025827A (en) * | 2017-06-08 | 2017-08-08 | 商丘工学院 | A kind of applied mathematics probability event teaching method and device |
| CN207602086U (en) * | 2017-09-25 | 2018-07-10 | 河北机电职业技术学院 | A kind of College Maths probability event teaching demonstration device |
| CN111145617A (en) * | 2020-01-18 | 2020-05-12 | 西安文理学院 | Mathematical probability demonstration device |
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| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200508 |
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| RJ01 | Rejection of invention patent application after publication |