CN209879904U - College mathematics probability incident teaching presentation device - Google Patents
College mathematics probability incident teaching presentation device Download PDFInfo
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- CN209879904U CN209879904U CN201822015016.6U CN201822015016U CN209879904U CN 209879904 U CN209879904 U CN 209879904U CN 201822015016 U CN201822015016 U CN 201822015016U CN 209879904 U CN209879904 U CN 209879904U
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Abstract
The utility model relates to a university's teaching equipment field specifically discloses a university's mathematics probability event teaching presentation device, including box, back shaft, supporting platform, annular rack, driving motor, probability ball inlet, play ball mouth, stirring pole and driving gear, the back shaft rotates and sets up on the axis of box, the both ends of back shaft are fixed respectively on two support columns, the equidistant three play ball mouths that are provided with in middle section of box, the fender material ring sliding sleeve is established outside the middle section of box, the inner circle surface of fender material ring has seted up the ring channel, the tip of play ball mouth is arranged in the ring channel; the bottom of the material blocking ring is provided with a ball outlet pipe. The utility model discloses can reach random probability's demonstration purpose, increase student's interest in learning, make things convenient for the student to the concrete understanding of probability, improve the quality of teaching.
Description
Technical Field
The utility model relates to a college teaching equipment field specifically is a college mathematics probability incident teaching presentation device.
Background
Probability is a measure of the likelihood of a random event occurring and generally represents the magnitude of the likelihood of an event occurring in a real number between 0 and 1. The closer to 1, the more likely the event is to occur; the closer to 0, the less likely the event is to occur, which is an objective demonstration, not subjective verification.
Probability mostly is more abstract's concept, in university's mathematics probability theory course, lacks some and to the supplementary teaching apparatus of probability and mathematical statistics, only can write the mode of giving lessons through the blackboard and explain, derives the explanation from theory, and the student often is difficult to understand and master, and the teaching effect is unsatisfactory. If can explain probability time with the help of probability thing teaching presentation device, demonstrate its probability of appearing many times to probability event directly perceived, can impel the student to deepen to understand and master relevant knowledge point.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a university's mathematics probability incident teaching presentation device to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
a college mathematics probability event teaching demonstration device comprises a box body, a supporting shaft, a supporting platform, an annular rack, a driving motor, a probability ball inlet, a ball outlet, a material stirring rod and a driving gear, wherein the lower surface of the end part of the supporting platform is provided with a supporting leg for supporting, and the upper surface of the end part of the supporting platform is fixedly provided with a vertically arranged supporting column; the supporting shaft is rotatably arranged on a central axis of the box body, and two ends of the supporting shaft are respectively fixed on the two supporting columns; the probability ball feeding port is arranged at the left end of the box body, three ball outlets are arranged in the middle section of the box body at equal intervals, the material blocking ring is sleeved outside the middle section of the box body in a sliding mode, an annular groove is formed in the surface of the inner ring of the material blocking ring, and the end portions of the ball outlets are arranged in the annular groove; the bottom of keeping off the material ring is provided with out the bulb, install on the supporting platform and be used for driving box pivoted driving motor.
As a further aspect of the present invention: and the top end of the probability ball feeding port is provided with a sealing cover in a threaded connection mode.
As a further aspect of the present invention: an annular rack is fixedly arranged on the surface of the outer ring of the right end of the box body, and a driving gear meshed with the annular rack is mounted on an output shaft of the driving motor.
As a further aspect of the present invention: the middle section internal diameter of the box that the level was placed is greater than its both ends internal diameter setting, makes the probability ball in the box concentrate on the middle part of box like this, makes things convenient for the probability ball to discharge through a ball mouth.
As a further aspect of the present invention: a stirring support rod is fixedly arranged on the support shaft positioned in the inner cavity of the box body, and a material poking rod matched with the inclined surface of the inner cavity of the box body is arranged at the end part of the stirring support rod.
As a further aspect of the present invention: university's mathematics probability incident teaching presentation device still includes collection ball funnel, accomodates the pipe, goes out the ball baffle and supports the base, support base fixed mounting in the bottom of supporting leg, be the low high slope of right side left side and place accomodate a pipe fixed mounting on supporting the base, collection ball funnel sets up at the right-hand member of accomodating the pipe, accomodates the pipe and is located out the ball under the pipe.
As a further aspect of the present invention: the containing pipe is made of transparent plastic.
As a further aspect of the present invention: the left end of the containing pipe is provided with a ball outlet baffle.
A mathematics teaching aid contains university mathematics probability incident teaching presentation device.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses a probability ball inlet adds the probability ball of different colours to the box in, then screw the closing cap and install on probability ball inlet, then utilize the driving motor drive box of circular telegram to rotate the pivoted box and make the probability ball in the box constantly move, and utilize stirring branch and dial the probability ball of feed rod in to the box in disorder, rotate when the box to one of them play ball mouth with keep off the material on the ring play ball pipe when corresponding, the probability ball is discharged through play ball mouth and play ball pipe, the colour to the probability ball of discharging at every turn is marked, reach random probability's demonstration purpose, student's interest in learning has been increased, make things convenient for the student to specifically understand of probability, the teaching quality has been improved.
Drawings
Figure 1 is the utility model discloses university's mathematics probability incident teaching presentation device embodiment 1's schematic structure diagram.
Figure 2 is the utility model discloses university's mathematics probability incident teaching presentation device embodiment 2's schematic structure.
Figure 3 is the utility model discloses keep off the cross-sectional view of material ring in university's mathematics probability incident teaching presentation device.
In the figure: the device comprises a box body 1, a support shaft 2, a support platform 3, an annular rack 4, a driving motor 5, a probability ball feeding port 6, a sealing cover 7, a material blocking ring 8, a ring groove 81, a support rod 9, a ball outlet 10, a support column 11, a stirring support rod 12, a material stirring rod 13, a driving gear 14, a ball outlet pipe 15, a support leg 16, a ball collecting funnel 17, a ball collecting funnel 18, a ball outlet baffle 19 and a support base 20.
Detailed Description
The present invention will be described in further detail with reference to the following examples and drawings, but the present invention is not limited thereto.
Example 1
Referring to fig. 1 and 3, in an embodiment of the present invention, a demonstration apparatus for college mathematics probability event teaching includes a box 1, a supporting shaft 2, a supporting platform 3, an annular rack 4, a driving motor 5, a probability ball inlet 6, a ball outlet 10, a material stirring rod 13 and a driving gear 14, wherein a supporting leg 16 for supporting is arranged on the lower surface of the end of the supporting platform 3, and a supporting column 11 vertically arranged is fixedly arranged on the upper surface of the end of the supporting platform 3; the supporting shaft 2 is rotatably arranged on the central axis of the box body 1, and two ends of the supporting shaft 2 are respectively fixed on the two supporting columns 11; the left end of the box body 1 is provided with a probability ball inlet 6, probability balls are added into the box body 1 through the probability ball inlet 6, a sealing cover 7 is installed at the top end of the probability ball inlet 6 in a threaded connection mode, and the probability ball inlet 6 is sealed.
In the embodiment of the utility model, three ball outlets 10 are arranged at equal intervals in the middle section of the box body 1, the material blocking ring 8 is slidably sleeved outside the middle section of the box body 1, the material blocking ring 8 is fixedly arranged on the support column 11 through the support rod 9, the annular groove 81 is arranged on the inner ring surface of the material blocking ring 8, and the end part of the ball outlet 10 is arranged in the annular groove; the bottom of the material blocking ring 8 is provided with a ball outlet pipe 15, and the bottom end of the ball outlet pipe 15 is arranged below the supporting platform 3.
Furthermore, a driving motor 5 for driving the box body 1 to rotate is installed on the supporting platform 3, an annular rack 4 is fixedly arranged on the surface of the outer ring of the right end of the box body 1, a driving gear 14 meshed with the annular rack 4 is installed on an output shaft of the driving motor 5, and the box body 1 can be driven to rotate by the aid of the electrified driving motor 5.
Furthermore, the inner diameter of the middle section of the horizontally placed box body 1 is larger than the inner diameters of the two ends of the box body, so that probability balls in the box body 1 are concentrated in the middle of the box body 1, and the probability balls are conveniently discharged through the ball outlet 10; a stirring support rod 12 is fixedly arranged on the support shaft 2 positioned in the inner cavity of the box body 1, and a material stirring rod 13 matched with the inclined surface of the inner cavity of the box body 1 is arranged at the end part of the stirring support rod 12.
The utility model discloses university mathematics probability incident teaching presentation device, when using, open 7 backs of closing cap, add the probability ball of different colours in to box 1 through probability ball inlet 6, then screw and install closing cap 7 on probability ball inlet 6, then utilize 5 drive box 1 of circular telegram to rotate pivoted box 1 and make the probability ball continuous motion in the box 1, and utilize stirring branch 12 and dial material pole 13 to disturb the probability ball in the box 1, it is relative when box 1 rotates to one of them output ball mouth 10 and keeps off ball pipe 15 on the material ring 8, the probability ball passes through output ball mouth 10 and output ball pipe 15 and discharges, mark the colour of the probability ball of discharging at every turn, reach random probability's demonstration purpose.
A mathematics teaching aid contains university mathematics probability incident teaching presentation device.
Example 2
Different from embodiment 1, please refer to fig. 2 and 3, in the embodiment of the utility model, a university's mathematics probability event teaching presentation device still includes collection ball funnel 17, accomodate pipe 18, play ball baffle 19 and support base 20, support base 20 fixed mounting in the bottom of supporting leg 16, be the high slope of left side low right side and place accomodate pipe 18 fixed mounting on supporting base 20, collection ball funnel 17 sets up the right-hand member at accomodating pipe 18, accomodate pipe 18 and be located out ball pipe 15 under, after the probability ball that goes out ball pipe 15 exhaust falls into collection ball funnel 17, the landing to accomodating in the pipe 18, and is further, accomodate pipe 18 and adopt transparent plastic to make, and the convenience of customers intuitionally observed receives the colour of the interior probability ball of taking in the pipe 18.
In the embodiment of the utility model provides an in, the left end of accomodating pipe 18 is provided with out ball baffle 19, opens out behind the ball baffle 19, conveniently accomodates taking out of 18 interior probability balls of pipe.
The utility model discloses the standard part that uses all can purchase from the market, and dysmorphism piece all can be customized according to the description with the record of drawing of description, and the concrete connection mode of each part all adopts conventional means such as ripe bolt, rivet, welding among the prior art, and machinery, part and equipment all adopt prior art, and conventional model, including circuit connection adopts conventional connection mode among the prior art, does not detailed here again.
The above is only the preferred embodiment of the present invention, not to the limitation of the present invention in any form, all the technical matters of the present invention all fall into the protection scope of the present invention to any simple modification and equivalent change of the above embodiments.
Claims (8)
1. A university mathematics probability event teaching demonstration device comprises a box body (1), a supporting shaft (2), a supporting platform (3), an annular rack (4), a driving motor (5), a probability ball inlet (6), a ball outlet (10), a material stirring rod (13) and a driving gear (14), wherein supporting legs (16) playing a supporting role are arranged on the lower surface of the end part of the supporting platform (3), and supporting columns (11) which are vertically arranged are fixedly arranged on the upper surface of the end part of the supporting platform (3), and the university mathematics probability event teaching demonstration device is characterized in that the supporting shaft (2) is rotatably arranged on the central axis of the box body (1), and two ends of the supporting shaft (2) are respectively fixed on the two supporting columns (11); a probability ball inlet (6) is formed in the left end of the box body (1), three ball outlets (10) are formed in the middle section of the box body (1) at equal intervals, the material blocking ring (8) is slidably sleeved outside the middle section of the box body (1), an annular groove (81) is formed in the surface of the inner ring of the material blocking ring (8), and the end part of each ball outlet (10) is arranged in the annular groove (81); the bottom of the material blocking ring (8) is provided with a ball outlet pipe (15), and a driving motor (5) used for driving the box body (1) to rotate is installed on the supporting platform (3).
2. The university mathematics probability event teaching demonstration device according to claim 1, characterized in that the top end of the probability ball addition port (6) is screwed with a cover (7).
3. The university mathematics probability event teaching demonstration device according to claim 1, characterized in that the outer ring surface of the right end of the box body (1) is fixedly provided with an annular rack (4), and the output shaft of the driving motor (5) is provided with a driving gear (14) meshed with the annular rack (4).
4. The university mathematics probability event teaching demonstration device according to claim 1, characterized in that the internal diameter of the middle section of the horizontally placed case (1) is larger than the internal diameters of the two ends.
5. The university mathematics probability event teaching demonstration device according to claim 4, characterized in that, the supporting shaft (2) located in the inner cavity of the box body (1) is fixedly provided with a stirring rod (12), and the end of the stirring rod (12) is provided with a material stirring rod (13) matched with the inclined surface of the inner cavity of the box body (1).
6. The university mathematics probability event teaching demonstration device according to any one of claims 1-5, characterized in that, still include ball collection funnel (17), accomodate pipe (18), play ball baffle (19) and support base (20), support base (20) fixed mounting is in the bottom of supporting leg (16), and accomodate pipe (18) that the high slope was placed about being low right side fixed mounting is on support base (20), ball collection funnel (17) sets up the right-hand member at accomodate pipe (18), accomodates pipe (18) and is located play ball pipe (15) under.
7. The university mathematical probabilistic event teaching demonstration device according to claim 6, wherein the receiving tube (18) is made of transparent plastic.
8. The university mathematical probability event teaching demonstration device according to claim 6, characterized in that the left end of the receiving pipe (18) is provided with a ball-out flap (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822015016.6U CN209879904U (en) | 2018-12-03 | 2018-12-03 | College mathematics probability incident teaching presentation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822015016.6U CN209879904U (en) | 2018-12-03 | 2018-12-03 | College mathematics probability incident teaching presentation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209879904U true CN209879904U (en) | 2019-12-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822015016.6U Expired - Fee Related CN209879904U (en) | 2018-12-03 | 2018-12-03 | College mathematics probability incident teaching presentation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209879904U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111653159A (en) * | 2020-01-16 | 2020-09-11 | 高天驰 | Mathematical probability demonstration device |
| CN112634714A (en) * | 2020-12-28 | 2021-04-09 | 山东交通学院 | Higher mathematics probability presentation device |
-
2018
- 2018-12-03 CN CN201822015016.6U patent/CN209879904U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111653159A (en) * | 2020-01-16 | 2020-09-11 | 高天驰 | Mathematical probability demonstration device |
| CN112634714A (en) * | 2020-12-28 | 2021-04-09 | 山东交通学院 | Higher mathematics probability presentation device |
| CN112634714B (en) * | 2020-12-28 | 2022-03-08 | 山东交通学院 | Higher mathematics probability presentation device |
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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 |
Granted publication date: 20191231 Termination date: 20201203 |
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| CF01 | Termination of patent right due to non-payment of annual fee |