CN208689801U - A kind of College Maths probability demonstration device - Google Patents
A kind of College Maths probability demonstration device Download PDFInfo
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- CN208689801U CN208689801U CN201820146886.4U CN201820146886U CN208689801U CN 208689801 U CN208689801 U CN 208689801U CN 201820146886 U CN201820146886 U CN 201820146886U CN 208689801 U CN208689801 U CN 208689801U
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- demonstration
- drain cap
- swingle
- college maths
- guide pipe
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Abstract
The utility model discloses a kind of College Maths probability demonstration devices, including demonstration cylinder；Its top of the demonstration cylinder is provided with storing bucket；Its bottom of the demonstration cylinder is detachably equipped with bottom cover；Control box is installed in the bottom cover；Its outside of the bottom cover is equipped with control panel；The control panel is electrically connected with control box；Drain cap is fixed in the demonstration cylinder；Its center of the drain cap is fitted with swingle；Plug is equipped with more levers on the outside of the swingle；Its lower end of the swingle is sequentially connected with driving motor；Multiple leak holes are provided on the drain cap；Its bottom surface of the drain cap is equipped with a guide pipe below each leak hole；The guide pipe underside is equipped with chassis；The chassis is connected with air-leg；The air-leg and driving motor are electrically connected with control box respectively；The College Maths probability demonstration device of the utility model is, it can be achieved that the probability under different conditions is demonstrated, and can more intuitively be demonstrated.
Description
Technical field
The utility model relates to a kind of demonstration devices, and in particular to a kind of College Maths probability demonstration device belongs to teaching equipment
Technical field.
Background technique
When teacher's progress mathematical probabilities are demonstrated, all it is often to carry out throwing using one piece of coin, has recorded front and back sides
It is simply counted after the number of generation；Probabilistic knowledge high to the level of abstraction and that difficulty is high do not understand on help；Again or
Person teacher is simple to be explained by theoretical explanation, and student is difficult to grasp relevant knowledge；Need probability occur apparatus for demonstrating into
Row aided education.
Summary of the invention
A kind of in order to solve the above problems, the utility model proposes College Maths probability demonstration device is, it can be achieved that different conditions
Under probability demonstration, and can more intuitively be demonstrated.
The College Maths probability demonstration device of the utility model, including demonstration cylinder；Its top of the demonstration cylinder is provided with storing
Bucket；Its bottom of the demonstration cylinder is detachably equipped with bottom cover；Control box is installed in the bottom cover；Its outside installation of the bottom cover
There is control panel；The control panel is electrically connected with control box；Drain cap is fixed in the demonstration cylinder；It inserts at its center of the drain cap
Equipped with swingle；Plug is equipped with more levers on the outside of the swingle；Its lower end of the swingle is sequentially connected with driving electricity
Machine；Multiple leak holes are provided on the drain cap；Its bottom surface of the drain cap is equipped with a guiding below each leak hole
Pipe；The guide pipe underside is equipped with chassis；The chassis is connected with air-leg；The air-leg and driving motor difference
It is electrically connected with control box；Described swingle the upper end sequentially passes through chassis and drain cap, and its end is set to above drain cap；It is described
It is located at the drain cap upper periphery to swingle, axially staggered is provided with multiple clamping positions along its；The lever one end inserting
In clamping in position, the other end is hanging.
Further, described its bottom of storing bucket is movably installed with partition.
Further, the through-hole for collecting demonstration ball is provided through on the bottom cover.
Still further, inserted with plug in the through-hole.
Still further, the through-hole is connected with transfer passage；Its other end of the transfer passage is obliquely installed in storing
Bucket top；The transfer passage is connected with aspiration pump.
Further, its aperture of the leak hole is slightly larger than demonstration its sphere diameter of ball.
Further, when demonstration, the chassis contacts at the guiding bottom of the tube.
Further, after demonstration, the chassis is set to below guide pipe, and between being installed between the guide pipe
Away from；The spacing is greater than demonstration its diameter of ball.
As preferred embodiment, the demonstration cylinder is made of transparent acrylic material；The demonstration ball is baton round.
Further, air-leg start and stop key, motor start and stop key and total start key are provided on the control panel.
Compared with prior art, the College Maths probability demonstration device of the utility model, statistics is inserted every time
The quantity that ball is demonstrated in each guide pipe when filling different lever quantity, to obtain different probability values, and can be by probability value
It compares；The probability demonstration under different conditions can be achieved, and can more intuitively be demonstrated.
Detailed description of the invention
Fig. 1 is 1 structural schematic diagram of the embodiments of the present invention.
Fig. 2 is 2 structural schematic diagram of the embodiments of the present invention.
Each component mark in attached drawing are as follows: 1- demonstrates cylinder, 2- storing bucket, 3- bottom cover, 4- control panel, 41- air-leg start and stop
Key, 42- motor start and stop key, the total start key of 43-, 5- drain cap, 6- swingle, 7- lever, 8- leak hole, 9- guide pipe, the chassis 10-,
11- air-leg, 12- clamp position, 13- partition, 14- through-hole, 15- plug, 16- transfer passage, 17- aspiration pump.
Specific embodiment
Embodiment 1:
College Maths probability demonstration device as shown in Figure 1, including demonstration cylinder 1；Its top of the demonstration cylinder 1 is provided with storing
Bucket 2；Described 1 its bottom of demonstration cylinder is detachably equipped with bottom cover 3；Control box (not shown) is installed in the bottom cover 3；The bottom
Its outside of lid 3 is equipped with control panel 4；The control panel 4 is connect with control box electric (not shown)；It is solid in the demonstration cylinder 1
Surely there is drain cap 5；Described its center of drain cap 5 is fitted with swingle 6；Plug is equipped with more levers 7 on the outside of the swingle 6；Institute
It states its lower end of swingle 6 and is sequentially connected with driving motor (not shown)；Multiple leak holes 8 are provided on the drain cap 5；The drain cap
5 its bottom surface are equipped with a guide pipe 9 below each leak hole 8；9 underside of guide pipe is equipped with chassis
10；The chassis 10 is connected with air-leg 11；The air-leg 11 and driving motor (not shown) (are not schemed with control box respectively
Show) electrical connection；Described 6 the upper end of swingle sequentially passes through chassis 10 and drain cap 5, and its end is set to 5 top of drain cap；It is described
It is located at 5 upper periphery of drain cap to swingle 6, axially staggered is provided with multiple clamping positions 12 along its；7 one end of lever
It is plugged in and clamps in position 12, the other end is hanging.
Described its bottom of storing bucket 2 is movably installed with partition 13.
The through-hole 14 for collecting demonstration ball is provided through on the bottom cover 3.
Inserted with plug 15 in the through-hole 14.
Described its aperture of leak hole 8 is slightly larger than demonstration ball (not shown) its sphere diameter.
When demonstration, the chassis 10 contacts at 9 bottom of guide pipe.
After demonstration, the chassis 10 is set to 9 lower section of guide pipe, and is installed with spacing between the guide pipe 9；It is described
Spacing is greater than demonstration its diameter of ball.
The demonstration cylinder 1 is made of transparent acrylic material；The demonstration ball (not shown) is baton round.
Air-leg start and stop key 41, motor start and stop key 42 and total start key 43 are provided on the control panel 4.
Embodiment 2:
College Maths probability demonstration device as shown in Figure 2, structure are substantially the same manner as Example 1, wherein the through-hole 14
It is connected with transfer passage 16；Described its other end of transfer passage 16 is obliquely installed above storing bucket 2；The transfer passage 16 connects
It is connected to aspiration pump 17.
Its demenstration method of the College Maths probability demonstration device of the utility model is as follows,
1) lever is not inserted on swingle, and demonstration ball is fitted into storing bucket, air-leg start and stop key is pressed, adjusts air-leg
Highly, so that chassis contacts at guiding bottom of the tube；Then, partition is opened manually, so that demonstration ball is in self gravitation effect
Lower free-falling, and fallen in guide pipe from the leak hole on drain cap, by counting the demonstration ball quantity in each guide pipe,
To obtain probability value；Later, by adjusting air-leg height, demonstration ball is fallen on bottom cover, convenient for collecting；
2) lever is inserted on swingle, and demonstration ball is fitted into storing bucket, air-leg start and stop key is pressed, it is high to adjust air-leg
Degree, so that chassis contacts at guiding bottom of the tube；Then, partition is opened manually, so that demonstration ball is under self gravitation effect
The demonstration ball of free-falling, whereabouts falls again after the blocking of lever, and falls in guide pipe from the leak hole on drain cap,
By counting the demonstration ball quantity in each guide pipe, to obtain probability value；Later, by adjusting air-leg height, so that
Demonstration ball can be fallen on bottom cover, convenient for collecting；It can need to select the quantity of inserting lever according to demonstration, meanwhile, it counts every time
The quantity that ball is demonstrated in each guide pipe when inserting different lever quantity, to obtain different probability values, and can be by probability
Value compares；
3) lever is inserted on swingle, and demonstration ball is fitted into storing bucket, air-leg start and stop key is pressed, it is high to adjust air-leg
Degree, so that chassis contacts at guiding bottom of the tube；Meanwhile motor start and stop key is pressed, it is rotated by driving motor driving swingle,
To drive the lever rotation for being inserted into swingle；Then, open partition manually so that demonstration ball under self gravitation effect from
By falling, the demonstration ball of whereabouts falls again after the blocking of lever, and falls in guide pipe from the leak hole on drain cap, leads to
The demonstration ball quantity counted in each guide pipe is crossed, to obtain probability value；Later, by adjusting air-leg height, so that drilling
Show that ball can be fallen on bottom cover, convenient for collecting；It can need to select the quantity of inserting lever according to demonstration；It can need to select according to demonstration
The quantity of inserting lever is selected, meanwhile, the quantity of ball is demonstrated in each guide pipe when statistics inserts different lever quantity every time, from
And different probability values is obtained, and probability value can be compared；
The probability demonstration under different conditions can be achieved, and can more intuitively be demonstrated；
When collection, plug can be extracted, and collected manually；It can also be by connecting transfer passage, and by transfer passage
It is connect with aspiration pump, opens aspiration pump, automatically pumped demonstration ball into storing bucket by aspiration pump.
Above-described embodiment is only the better embodiment of the utility model, therefore all according to the utility model patent application range
The equivalent change or modification that the structure, feature and principle is done, is included in the scope of the utility model patent application.
Claims (10)
1. a kind of College Maths probability demonstration device, it is characterised in that: including demonstrating cylinder (1)；Its top setting of the demonstration cylinder (1)
There are storing bucket (2)；Described its bottom of demonstration cylinder (1) is detachably equipped with bottom cover (3)；Control box is installed in the bottom cover (3)；
Its outside of the bottom cover (3) is equipped with control panel (4)；The control panel (4) is electrically connected with control box；The demonstration cylinder
(1) drain cap (5) are fixed in；Described its center of drain cap (5) is fitted with swingle (6)；Plug installation on the outside of the swingle (6)
There are more levers (7)；Described its lower end of swingle (6) is sequentially connected with driving motor；Multiple leakages are provided on the drain cap (5)
Hole (8)；Described its bottom surface of drain cap (5) is located at below each leak hole (8) and is equipped with a guide pipe (9)；The guide pipe
(9) underside is equipped with chassis (10)；The chassis (10) is connected with air-leg (11)；The air-leg (11) and driving electricity
Machine is electrically connected with control box respectively；Described swingle (6) the upper end sequentially passes through chassis (10) and drain cap (5), and its end is set
It is placed in above drain cap (5)；It is located at the drain cap (5) upper periphery to the swingle (6), along its it is axially staggered be provided with it is multiple
It clamps position (12)；Lever (7) one end, which is plugged in, to be clamped in position (12), and the other end is hanging.
2. College Maths probability demonstration device according to claim 1, it is characterised in that: described its bottom of storing bucket (2) is living
It is dynamic that partition (13) are installed.
3. College Maths probability demonstration device according to claim 1, it is characterised in that: through setting on the bottom cover (3)
There is the through-hole (14) for collecting demonstration ball.
4. College Maths probability demonstration device according to claim 3, it is characterised in that: inserted with stifled in the through-hole (14)
Head (15).
5. College Maths probability demonstration device according to claim 3, it is characterised in that: the through-hole (14) is connected with conveying
Channel (16)；Described its other end of transfer passage (16) is obliquely installed above storing bucket (2)；Transfer passage (16) connection
There are aspiration pump (17).
6. College Maths probability demonstration device according to claim 1, it is characterised in that: described its aperture of leak hole (8) is bigger
In demonstration its sphere diameter of ball.
7. College Maths probability demonstration device according to claim 1, it is characterised in that: when demonstration, the chassis (10) is supported
It touches in the guide pipe (9) bottom.
8. College Maths probability demonstration device according to claim 1, it is characterised in that: after demonstration, the chassis (10) is set
It is placed in below guide pipe (9), and is installed with spacing between the guide pipe (9)；The spacing is greater than demonstration its diameter of ball.
9. College Maths probability demonstration device according to claim 3, it is characterised in that: the demonstration cylinder (1) is by transparent Asia
Gram force material is made；The demonstration ball is baton round.
10. College Maths probability demonstration device according to claim 1, it is characterised in that: be arranged on the control panel (4)
There are air-leg start and stop key (41), motor start and stop key (42) and total start key (43).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820146886.4U CN208689801U (en) | 2018-01-29 | 2018-01-29 | A kind of College Maths probability demonstration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820146886.4U CN208689801U (en) | 2018-01-29 | 2018-01-29 | A kind of College Maths probability demonstration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208689801U true CN208689801U (en) | 2019-04-02 |
Family
ID=65875230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820146886.4U Expired - Fee Related CN208689801U (en) | 2018-01-29 | 2018-01-29 | A kind of College Maths probability demonstration device |
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| Country | Link |
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| CN (1) | CN208689801U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110009974A (en) * | 2019-04-24 | 2019-07-12 | 黄淮学院 | A kind of mathematical probabilities teaching demonstration device |
| CN112489535A (en) * | 2020-12-10 | 2021-03-12 | 江苏经贸职业技术学院 | Mathematical statistics distribution demonstrator |
-
2018
- 2018-01-29 CN CN201820146886.4U patent/CN208689801U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110009974A (en) * | 2019-04-24 | 2019-07-12 | 黄淮学院 | A kind of mathematical probabilities teaching demonstration device |
| CN112489535A (en) * | 2020-12-10 | 2021-03-12 | 江苏经贸职业技术学院 | Mathematical statistics distribution demonstrator |
| CN112489535B (en) * | 2020-12-10 | 2022-05-24 | 江苏经贸职业技术学院 | Mathematical statistics distribution demonstrator |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Heilongjiang Beisheng electric complete equipment Co.,Ltd. Assignor: QIQIHAR University Contract record no.: X2022230000029 Denomination of utility model: A probability demonstrator for College Mathematics Granted publication date: 20190402 License type: Exclusive License Record date: 20220510 |
|
| 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: 20190402 |