CN206147996U - Ramdom variable probabilistic testing device for mathematical education - Google Patents
Ramdom variable probabilistic testing device for mathematical education Download PDFInfo
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- CN206147996U CN206147996U CN201620602048.4U CN201620602048U CN206147996U CN 206147996 U CN206147996 U CN 206147996U CN 201620602048 U CN201620602048 U CN 201620602048U CN 206147996 U CN206147996 U CN 206147996U
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Abstract
The utility model relates to a probabilistic testing device especially relates to a ramdom variable probabilistic testing device for mathematical education. The to -be -solved technical problem of the utility model is to provide a ramdom variable probabilistic testing device for mathematical education that the test is directly perceived, strong, the easy operation of test randomness. In order to solve the technical problem, the utility model provides a such ramdom variable probabilistic testing device for mathematical education, including N type frame, T type guide arm, the electro -magnet, the switch, the test box, left side collecting box, right side collecting box, left side pipeline, right side pipeline, the chamber door, a spring, the push pedal, the guide bar, the iron plate, the left branch pole, the right branch pole, a guiding sleeve, the rack, including a motor, an end cap, a controller, and a cover plate, gear and movable plate, it has guiding hole II to open in the middle of the top of N type frame, guiding hole II is equipped with T type guide arm with going up the slidingtype, the electro -magnet is connected at T type guide arm top, be provided with the switch on the horizontal pole on the T type guide arm. The utility model discloses reached test directly perceived, test randomness is strong, easy operation's effect.
Description
Technical field
This utility model is related to a kind of probabilistic testing device, more particularly to a kind of mathematical education stochastic variable probabilistic testing
Device.
Background technology
Stochastic variable represents the real-valued monotropic function of the various results of random experiment, row such as sometime in bus stop
Patronage, number of calls that telephone exchange is received within the regular hour etc., are all the examples of stochastic variable.
Probability also known as probability, chance rate and, probability or probability, she is the basic conception of theory of probability, probability be to
The tolerance of the probability that machine event occurs, as someone has percent how many assurance to take an examination by current, what something occurred
Probability is how many, and these are all the examples of probability.
Existing stochastic variable probabilistic testing device haves the shortcomings that test is not directly perceived, test randomness is poor, complex operation,
Therefore need a kind of mathematical education that test is directly perceived, test randomness is strong, simple to operate of research and development badly to be filled with stochastic variable probabilistic testing
Put.
Utility model content
（1）The technical problem to be solved
Test is not directly perceived, test randomness is poor, complex operation shortcoming in order to overcome for this utility model, and this utility model will
It is general with stochastic variable that the technical problem of solution is to provide a kind of mathematical education that test is directly perceived, test randomness is strong, simple to operate
Rate test device.
（2）Technical scheme
In order to solve above-mentioned technical problem, this utility model provides such a mathematical education stochastic variable probability and surveys
Trial assembly is put, and includes N-type frame, T-shaped guide rod, electric magnet, switch, test box, left collecting box, right collecting box, left pipeline, right pipe
Road, chamber door, spring, push pedal, guide post, iron block, left branching rod, right pole, fairlead, tooth bar, motor, gear and movable plate, N-type
The crown center of frame is provided with pilot hole II, and T-shaped guide rod is slidably provided with pilot hole II, and T-shaped guide rod top connects electric magnet,
Switch is provided with cross bar on T-shaped guide rod, electric magnet has circuit to be connected with switch, and N-type frame is arranged above test box, N
Type frame top left side is provided with left collecting box, and N-type top of the trellis right side is provided with right collecting box, and test box bottom left is provided with a left side
Pipeline, left pipeline is connected on left collecting box, and test box bottom right is provided with right pipeline, and right pipeline is connected to right collecting box
On, the bottom that test box bottom middle setting has mounting groove, mounting groove is provided with pilot hole I, the mounting groove of the left and right sides of pilot hole I
Spring is provided with, the top of spring is connected with push pedal, guide post is connected with the middle of push pedal bottom, guide post passes through pilot hole I simultaneously
Guide post is connected with, guide post bottom is connected with iron block, and test box top left wall is provided with left branching rod, and test box top right wall sets
Right pole is equipped with, left branching rod is provided with fairlead, and fairlead is provided with tooth bar, and tooth bar is connected with fairlead slidingtype, right pole
On motor is installed, be connected with gear on motor, wheel and rack engagement, tooth bar lower end is connected with portable plate, and portable plate is located at
In test box.
Preferably, counting chamber is also included, N-type frame upper left side is provided with counting chamber.
Preferably, the material of test box is clear glass.
Operation principle：When to carry out probability demonstration test using this device, chamber door opening is placed on ball pushes away first
On plate, chamber door is then shut, then handss hold T-shaped guide rod, T-shaped guide rod is pushed up, electric magnet is contacted with iron block, electromagnetism
After ferrum is contacted with iron block, switch is pressed, make electric magnet be powered, after energization, electric magnet is attracting with iron block, then pull T-shaped guide rod
Move downward, T-shaped guide rod moves downward electric magnet, iron block and push pedal and also moves downward therewith, spring-compressed.When push pedal and installation
When trench bottom is contacted, then switch is pressed, make electric magnet power-off, after electric magnet power-off, spring effect ejects in ball in push pedal, and ball exists
Upper and lower springing in test box, is fallen in left collecting box or right collecting box, such repeatable operation, with regard to energy by left pipeline or right pipeline
Test out the probability that ball falls in left collecting box or right collecting box.Can be rotated forward with controlled motor or be inverted, band moving gear
Forward or reverse, because rack and pinion engagement, gear forward or reverse band carry-over bar moves up and down, and tooth bar moves up and down
Movable plate is driven to move up and down in test box, by the upper-lower height for adjusting movable plate, observation movable plate is after altitude mixture control
The whether right difference of probability of falling sphere before height is not adjusted, the variation of test is added.
Because also including counting chamber, counting chamber is provided with N-type frame, when ball falls in left collecting box or right collecting box
When, people counting chamber just on write the quantity of left collecting box or the falling sphere in right collecting box.
Because the material of test box is clear glass composition, when ball upper and lower springing in test box, people can pass through
Clear glass observes the situation of ball upper and lower springing in test box.
（3）Beneficial effect
This utility model has reached the effect that test is directly perceived, test randomness is strong, simple to operate.
Description of the drawings
Fig. 1 is the first structural representation of the present utility model.
Fig. 2 is second structural representation of the present utility model.
Labelling in accompanying drawing for：1-N type frame, 2- pilot holes II, 3-T type guide rods, 4- electric magnet, 5- switches, 6- test boxs,
The left collecting boxs of 7-, the right collecting boxs of 8-, 9- left pipelines, 10- right pipelines, 11- mounting grooves, 12- chamber doors, 13- pilot holes I, 14- bullets
Spring, 15- push pedals, 16- guide posts, 17- iron blocks, 18- left branching rods, the right poles of 19-, 20- fairleads, 21- tooth bars, 22- motors,
23- gears, 24- movable plates, 25- counting chambeies.
Specific embodiment
This utility model is further described with reference to the accompanying drawings and examples.
Embodiment 1
A kind of mathematical education stochastic variable probabilistic testing device, as shown in Figure 1-2, include N-type frame 1, T-shaped guide rod 3,
Electric magnet 4, switch 5, test box 6, left collecting box 7, right collecting box 8, left pipeline 9, right pipeline 10, chamber door 12, spring 14, push pedal
15th, guide post 16, iron block 17, left branching rod 18, right pole 19, fairlead 20, tooth bar 21, motor 22, gear 23 and movable plate 24,
The crown center of N-type frame 1 is provided with pilot hole II 2, and T-shaped guide rod 3 is slidably provided with pilot hole II 2, and the top of T-shaped guide rod 3 connects
Electric magnet 4 is connect, switch 5 is provided with the cross bar on T-shaped guide rod 3, electric magnet 4 has circuit to be connected with switch 5, directly over N-type frame 1
Test box 6 is provided with, the top left side of N-type frame 1 is provided with left collecting box 7, and the top right side of N-type frame 1 is provided with right collecting box 8, is surveyed
The examination bottom left of case 6 is provided with left pipeline 9, and left pipeline 9 is connected on left collecting box 7, and the bottom right of test box 6 is provided with right pipe
Road 10, right pipeline 10 is connected on right collecting box 8, and the bottom that the bottom middle setting of test box 6 has mounting groove 11, mounting groove 11 is opened
The mounting groove 11 for having pilot hole I 13, the left and right sides of pilot hole I 13 is provided with spring 14, and the top of spring 14 is connected with push pedal 15,
Guide post 16 is connected with the middle of the bottom of push pedal 15, guide post 16 is through pilot hole I 13 and is connected with guide post 16, the bottom of guide post 16
Portion is connected with iron block 17, and the top left wall of test box 6 is provided with left branching rod 18, and the top right wall of test box 6 is provided with right pole 19, left
Pole 18 is provided with fairlead 20, and fairlead 20 is provided with tooth bar 21, and tooth bar 21 is connected with the slidingtype of fairlead 20, right pole 19
On motor 22 is installed, gear 23 is connected with motor 22, gear 23 is engaged with tooth bar 21, and the lower end of tooth bar 21 is connected with activity
Plate, portable plate is located in test box 6.
Counting chamber 25 is also included, the upper left side of N-type frame 1 is provided with counting chamber 25.
The material of test box 6 is clear glass.
Operation principle：When to carry out probability demonstration test using this device, chamber door 12 is opened first ball is placed on
In push pedal 15, chamber door 12 is then shut, then handss hold T-shaped guide rod 3, T-shaped guide rod 3 is pushed up, make electric magnet 4 and iron block
17 contacts, after electric magnet 4 is contacted with iron block 17, press switch 5, make electric magnet 4 be powered, after energization, electric magnet 4 and the phase of iron block 17
Inhale, then pull T-shaped guide rod 3 to move downward, it is also downward therewith that T-shaped guide rod 3 moves downward electric magnet 4, iron block 17 and push pedal 15
Motion, spring 14 compresses.When push pedal 15 is contacted with the bottom of mounting groove 11, then switch 5 is pressed, make the power-off of electric magnet 4, electric magnet
After 4 power-off, spring 14 acts on push pedal 15 and ejects in ball, ball upper and lower springing in test box 6, by left pipeline 9 or right pipeline
10 fall in left collecting box 7 or right collecting box 8, and such repeatable operation can just test out ball and fall in left collecting box 7 or right collection
Probability in case 8.Can rotate forward or invert with controlled motor 22, the band forward or reverse of moving gear 23, because tooth bar 21 and tooth
Wheel 23 is engaged, so the forward or reverse of gear 23 band carry-over bar 21 moves up and down, tooth bar 21 moves up and down and drives movable plate 24 to exist
Move up and down in test box 6, by the upper-lower height for adjusting movable plate 24, movable plate 24 is after altitude mixture control and does not adjust for observation
The whether right difference of the probability of falling sphere, adds the variation of test before height.
Because also including counting chamber 25, counting chamber 25 is provided with N-type frame 1, when ball falls in left collecting box 7 or right collection
When in case 8, people write the quantity of left collecting box 7 or the falling sphere in right collecting box 8 in counting chamber 25 with regard on.
Because the material of test box 6 is clear glass composition, when ball upper and lower springing in test box 6, people can lead to
Cross the situation that clear glass observes ball upper and lower springing in test box 6.
Embodiment described above only expresses preferred implementation of the present utility model, and its description is more concrete and detailed,
But therefore can not be interpreted as the restriction to this utility model the scope of the claims.It should be pointed out that common for this area
For technical staff, without departing from the inventive concept of the premise, some deformations, improvement can also be made and substituted, these are all
Belong to protection domain of the present utility model.Therefore, the protection domain of this utility model patent should be defined by claims.
Claims (3)
1. a kind of mathematical education stochastic variable probabilistic testing device, it is characterised in that include N-type frame（1）, T-shaped guide rod
（3）, electric magnet（4）, switch（5）, test box（6）, left collecting box（7）, right collecting box（8）, left pipeline（9）, right pipeline（10）、
Chamber door（12）, spring（14）, push pedal（15）, guide post（16）, iron block（17）, left branching rod（18）, right pole（19）, fairlead
（20）, tooth bar（21）, motor（22）, gear（23）And movable plate（24）, N-type frame（1）Crown center be provided with pilot hole II
（2）, pilot hole II（2）On be slidably provided with T-shaped guide rod（3）, T-shaped guide rod（3）Top connection electric magnet（4）, T-shaped guide rod
（3）On cross bar on be provided with switch（5）, electric magnet（4）With switch（5）There is circuit to connect, N-type frame（1）It is arranged above
Test box（6）, N-type frame（1）Top left side is provided with left collecting box（7）, N-type frame（1）Top right side is provided with right collecting box
（8）, test box（6）Bottom left is provided with left pipeline（9）, left pipeline（9）It is connected to left collecting box（7）On, test box（6）Bottom
Portion right side is provided with right pipeline（10）, right pipeline（10）It is connected to right collecting box（8）On, test box（6）Bottom middle setting has
Mounting groove（11）, mounting groove（11）Bottom be provided with pilot hole I（13）, pilot hole I（13）The mounting groove of the left and right sides（11）On
It is provided with spring（14）, spring（14）Top be connected with push pedal（15）, push pedal（15）Guide post is connected with the middle of bottom（16）, lead
To bar（16）Through pilot hole I（13）And it is connected with guide post（16）, guide post（16）Bottom is connected with iron block（17）, test box
（6）Top left wall is provided with left branching rod（18）, test box（6）Top right wall is provided with right pole（19）, left branching rod（18）On set
There is fairlead（20）, fairlead（20）It is provided with tooth bar（21）, tooth bar（21）With fairlead（20）Slidingtype connects, right pole
（19）On motor is installed（22）, motor（22）On be connected with gear（23）, gear（23）With tooth bar（21）Engagement, tooth bar（21）
Lower end is connected with portable plate, and portable plate is located at test box（6）It is interior.
2. a kind of mathematical education according to claim 1 stochastic variable probabilistic testing device, it is characterised in that also include
There is counting chamber（25）, N-type frame（1）Upper left side is provided with counting chamber（25）.
3. a kind of mathematical education according to claim 1 stochastic variable probabilistic testing device, it is characterised in that test box
（6）Material be clear glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620602048.4U CN206147996U (en) | 2016-06-19 | 2016-06-19 | Ramdom variable probabilistic testing device for mathematical education |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620602048.4U CN206147996U (en) | 2016-06-19 | 2016-06-19 | Ramdom variable probabilistic testing device for mathematical education |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206147996U true CN206147996U (en) | 2017-05-03 |
Family
ID=58616188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620602048.4U Expired - Fee Related CN206147996U (en) | 2016-06-19 | 2016-06-19 | Ramdom variable probabilistic testing device for mathematical education |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206147996U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109903649A (en) * | 2019-04-17 | 2019-06-18 | 德州学院 | A kind of College Maths probability event teaching demonstration device based on big data analysis |
-
2016
- 2016-06-19 CN CN201620602048.4U patent/CN206147996U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109903649A (en) * | 2019-04-17 | 2019-06-18 | 德州学院 | A kind of College Maths probability event teaching demonstration device based on big data analysis |
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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: 20170503 Termination date: 20180619 |