CN204537550U - Higher mathematics demonstration device for probability - Google Patents
Higher mathematics demonstration device for probability Download PDFInfo
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- CN204537550U CN204537550U CN201520193569.4U CN201520193569U CN204537550U CN 204537550 U CN204537550 U CN 204537550U CN 201520193569 U CN201520193569 U CN 201520193569U CN 204537550 U CN204537550 U CN 204537550U
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- coin
- cylinder
- base
- end cap
- sidewall
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Abstract
Higher mathematics demonstration device for probability, for solve artificial throwing coin statistics front side equal with anti-supine probability upward time, the problem wasted time and energy.Be provided with some cylinders in inside sidewalls, be provided with the first cylinder within the barrel, the first cylinder piston rod is provided with electromagnet, be provided with the spring being enclosed within the first cylinder outside within the barrel, be fixed with metal jacking block on the top of spring; The mat of an inclination is provided with on the top of each cylinder bore; Some cylinders surround coin throwing space, are provided with coin supply assembly between each cylinder and sidewall; In coin throwing space, be provided with end cap, end cap is hollow structure and end cap upper end is uncovered, is provided with one by the poke rod of motor-driven rotation, between the installation end and base of end cap, is provided with coin exit on base top.This apparatus for demonstrating, environment facies when can ensure each throwing coin are same, the accuracy of warranty test result and the cogency of test, and convenient and simple for operation.
Description
Technical field
The utility model relates to higher mathematics probabilistic technique field, specifically a kind of demonstration jettisoning front side upward with the reverse side apparatus for demonstrating that probability is equal upward.
Background technology
In higher mathematics, probability is a very indigestible knowledge point.Jettisoning coin time, when statistics front side is upward or the anti-raw upward probability of reverse side is equal, need the hand-held coin of statistics person to throw in the air, then coin such as grade falls to the ground, and repeats above-mentioned action repeatedly.Under this mode, need to take statistics person's more time, and waste time and energy.
Utility model content
The purpose of this utility model is to provide a kind of higher mathematics demonstration device for probability, for solve artificial throwing coin statistics front side equal with anti-supine probability upward time, the problem wasted time and energy.
The technical scheme in the invention for solving the technical problem is: higher mathematics demonstration device for probability, it is characterized in that, comprise base, eject assembly, coin supply assembly and poke rod, the sidewall of annular is provided with at the top of described base, some cylinders circumferentially evenly arranged are provided with in the inner side of described sidewall, first cylinder vertically placed is provided with in cylinder described in each, an electromagnet is provided with at the piston rod free end of described first cylinder, the spring that one is enclosed within the first cylinder outside is provided with in cylinder described in each, the bottom of described spring is fixed on base, jacking block is fixed with on the top of described spring, described jacking block is circular metalwork and lubricates good between described jacking block and the inwall of cylinder, described in each, the top of cylinder bore is provided with an inclined-plane, described inclined-plane is positioned on the cylinder bore at sidewall center, and the low side on described inclined-plane is towards the center of sidewall, described inclined-plane is provided with flexible mat, and described spring, the first cylinder, jacking block and electromagnet constitute and eject assembly,
Some described cylinders surround coin throwing space, coin supply assembly is provided with between cylinder and sidewall described in each, described coin supply assembly comprises the second cylinder, coin support and dividing plate, described second cylinder is vertically placed and is fixed on base, a platform is provided with at the piston rod free end of described second cylinder, be provided with coin support on the platform, described coin support is columniform hollow structure, and the upper end of described coin support is uncovered, the dividing plate of some upper and lower spaced sets is provided with in the inner chamber of described coin support, described dividing plate be obliquely installed and the low side of described dividing plate towards the side at cylinder place, coin placed by described dividing plate, the low side of coin coordinates with the wall contacts of cylinder, coin inlet port is provided with in the cylinder side near coin support,
An end cap is provided with in coin throwing space, described end cap is hollow structure and the upper end of described end cap is uncovered, one is provided with by the poke rod of motor-driven rotation on described base top, described poke rod is circular arc bar, between the installation end and base of described end cap, be provided with coin exit, be positioned at the groove base outside coin exit being provided with and collecting coins.
Further, described coin support and platform are articulated and connected, and both pin joints are positioned at the side near sidewall, and are provided with the through hole corresponding with each coin support on described sidewall, and coin support passes through through hole after pin joint rotates.
Further, described end cap is dish type, and the large end of described end cap is fixed on base, and the small end of described end cap is arranged upward, and when shifting part is in off working state, shifting part is hidden in end cap.
Further, described mat is the sponge member be pasted onto on inclined-plane.
Further, described base is circular working of plastics, and the motor driving poke rod to rotate is arranged in the square hole of base top.
The beneficial effects of the utility model are: the higher mathematics demonstration device for probability that the utility model provides, and in presentation process, many pieces of coins are successively dished out, and the problem wasted time and energy brought when avoiding the hand-held coin of statistics person to carry out throwing, has liberated manpower; The throwing of coin is primarily of cylinder, spring and magnet control, and automaticity is high; Each ejects the spring of assembly, the first cylinder is all identical with electromagnet, in the throwing process of coin, throwing environment facies when can ensure each throwing coin with, the accuracy of warranty test result and the cogency of test; This apparatus for demonstrating, convenient and simple for operation, can be applicable in campus.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present utility model;
Fig. 2 is the schematic diagram ejecting assembly;
Fig. 3 is the schematic diagram of coin supply assembly;
Schematic diagram when Fig. 4 is coin supply;
Fig. 5 is the schematic diagram that coin drops on jacking block;
Fig. 6 is the schematic diagram of electromagnet retracting spring;
Fig. 7 is the schematic diagram of coin when flying out;
Fig. 8 is the schematic diagram that coin drops on base;
Fig. 9 is poke rod and base engagement schematic diagram;
Figure 10 is the schematic diagram that coin stirred by poke rod;
Figure 11 is the position relationship schematic diagram of cylinder and sidewall;
In figure: 1 base, 11 sidewalls, 12 through holes, 2 cylinders, 20 coin inlet ports, 21 first cylinders, 22 springs, 23 jacking blocks, 24 electromagnet, 25 inclined-planes, 26 mats, 3 second cylinders, 31 platforms, 32 coin supports, 33 dividing plates, 4 coins, 41 without hindrance sides, 42 are obstructed side, 5 motors, 51 poke rods, 6 end caps, 7 is hinged.
Embodiment
As shown in Figure 1 to 11, base 1 is basis of the present utility model, and base is for installing other parts, and base can be circular or square working of plastics, and be provided with the sidewall 11 of annular at the top of base, sidewall and base surround the space of throwing coin.As shown in figure 11, the base in sidewall inner chamber is provided with some some cylinders 2 circumferentially arranged, and contacts with each other between two adjacent cylinders.
As shown in Figure 2, cylinder is cylindric working of plastics, is provided with the first cylinder 21 be fixed on base within the barrel, is fixed with electromagnet 24 at the piston rod free end of the first cylinder.Spring 22 is provided with in the outside of the first cylinder, the bottom of spring is fixed on base, and be fixed with circular jacking block 23 at the top of spring, the external diameter of jacking block is identical with the internal diameter of cylinder, the sidewall of jacking block is provided with lubricant, to reduce the friction force between jacking block and cylinder.Cylinder, the first cylinder, spring, jacking block and electromagnet constitute and eject assembly.
As shown in Figure 3, be provided with an inclined-plane 25, inclined-plane is pasted with mat 26 at the top of cylinder bore, mat is sponge member or rubber parts.The second vertical cylinder 3 is provided with in space between each cylinder and sidewall, second cylinder barrel is fixed on base, platform 31 is provided with at the piston rod free end of the second cylinder, hinged on platform coin support 32 is installed, coin support is the columniform hollow plastic article of overall one-tenth, some dividing plates 33 setting up and down are provided with in the inner chamber of coin support, dividing plate is the plastic plate be obliquely installed, coin placed by dividing plate, and be provided with the breach that coin skids off coin support on the coin support of dividing plate low side.Be provided with coin inlet port 20 in the cylinder side near coin support, when the coin low side on coin support contacts with cylinder side wall, coin is relative with dividing plate fixing; When coin low side points to coin inlet port, coin can enter into cylinder through coin inlet port, then drops on jacking block.Second cylinder, coin support and dividing plate constitute coin supply assembly.For ease of placing coin on coin support, the sidewall corresponding with each coin support being provided with through hole 12, rotating coin support around pin joint and coin support via through holes can be made to pass, now can place on dividing plate and treat throwing coin.
As shown in Figure 9, Figure 10, be provided with an end cap 6 at the top of base, end cap is the hollow plastic article of dish type, and the large end of end cap is fixed on base, and end cap is arranged in the inner chamber that some cylinders surround.Be provided with a motor 5 on the top of base, motor output shaft is fixed with a poke rod 51, and for ease of hiding poke rod, poke rod is in the arc-shaped, and when not needing to stir coin, poke rod is positioned at the below at end cap edge.For ease of the collection of coin, between the large end and base of end cap, be provided with coin exit, the base at coin exit place is provided with the groove collected coins, and coin stirred by poke rod makes it skid off in a groove through coin exit.
As shown in Figure 4, when coin low side contacts with cylinder side wall, cylinder blocks the landing that coin avoided by coin.Drive the second cylinder piston rod to extend, make coin support increase, as shown in Figure 5, when coin low side is positioned at coin inlet port, the coin of inclination can slide in cylinder through coin inlet port automatically.Drive the first cylinder piston rod to stretch out, electromagnet is contacted with jacking block, is then energized to electromagnet, now, electromagnet just holds jacking block; Then drive the first cylinder piston rod to shrink, make electromagnet drive jacking block to decline, the attractive force between electromagnet and jacking block is greater than the elastic force of spring.As shown in Figure 6, carry out power operation to electromagnet, now, the attractive force between electromagnet and jacking block disappears, and under the action of the spring, jacking block is ejected and makes jacking block increase rapidly, and the coin being positioned at jacking block top is upwards dished out.As shown in Figure 7, along with the continuous rising of coin 4, coin arrives the upper port place of cylinder, and have gap between one end of coin and cylinder, cylinder does not have drag effect to coin, and this end is without hindrance side 41; The other end of coin contacts rear speed gradually to be reduced with mat, and this end is the side 42 of being obstructed of coin.The accessible side speed of coin is high, and the side speed of being obstructed of coin is low, and coin is rotated.As shown in Figure 8, coin constantly overturns, and moves in coin throwing space.After coin reversion repeatedly, finally drop on base.After statistics, motor drives poke rod to swing, and coin is pushed aside from base by poke rod, to avoid impacting the follow-up coin dropped on base.Then motor overturning, makes poke rod get back to initial position.Then the first cylinder piston rod stretches out, and electromagnet is energized, electromagnet is held after electromagnet contacts with jacking block, then the first cylinder piston rod is driven to shrink, after first cylinder piston rod is retracted completely, drive the second cylinder piston rod to stretch out one section, make coin through the landing of coin inlet port in cylinder.
After the coin on a coin support has been thrown, repeat above-mentioned action, realize the throwing of the coin on other coin support.After coin on all coin supports has been thrown, statistics front side upward with anti-supine number of times.This apparatus for demonstrating, in presentation process, many pieces of coins are successively dished out, and the problem wasted time and energy brought when avoiding the hand-held coin of statistics person to carry out throwing, has liberated manpower; The throwing of coin is primarily of the first cylinder, the second cylinder, spring and magnet control, and automaticity is high; Each ejects the spring of assembly, the first cylinder is all identical with electromagnet, in the throwing process of coin, throwing environment facies when can ensure each throwing coin with, the accuracy of warranty test result and the cogency of test.
Claims (5)
1. higher mathematics demonstration device for probability, it is characterized in that, comprise base, eject assembly, coin supply assembly and poke rod, the sidewall of annular is provided with at the top of described base, some cylinders circumferentially evenly arranged are provided with in the inner side of described sidewall, first cylinder vertically placed is provided with in cylinder described in each, an electromagnet is provided with at the piston rod free end of described first cylinder, the spring that one is enclosed within the first cylinder outside is provided with in cylinder described in each, the bottom of described spring is fixed on base, jacking block is fixed with on the top of described spring, described jacking block is circular metalwork and lubricates good between described jacking block and the inwall of cylinder, described in each, the top of cylinder bore is provided with an inclined-plane, described inclined-plane is positioned on the cylinder bore at sidewall center, and the low side on described inclined-plane is towards the center of sidewall, described inclined-plane is provided with flexible mat, and described spring, the first cylinder, jacking block and electromagnet constitute and eject assembly,
Some described cylinders surround coin throwing space, coin supply assembly is provided with between cylinder and sidewall described in each, described coin supply assembly comprises the second cylinder, coin support and dividing plate, described second cylinder is vertically placed and is fixed on base, a platform is provided with at the piston rod free end of described second cylinder, be provided with coin support on the platform, described coin support is columniform hollow structure, and the upper end of described coin support is uncovered, the dividing plate of some upper and lower spaced sets is provided with in the inner chamber of described coin support, described dividing plate be obliquely installed and the low side of described dividing plate towards the side at cylinder place, coin placed by described dividing plate, the low side of coin coordinates with the wall contacts of cylinder, coin inlet port is provided with in the cylinder side near coin support,
An end cap is provided with in coin throwing space, described end cap is hollow structure and the upper end of described end cap is uncovered, one is provided with by the poke rod of motor-driven rotation on described base top, described poke rod is circular arc bar, between the installation end and base of described end cap, be provided with coin exit, be positioned at the groove base outside coin exit being provided with and collecting coins.
2. higher mathematics demonstration device for probability according to claim 1, it is characterized in that, described coin support and platform are articulated and connected, and both pin joints are positioned at the side near sidewall, and the through hole corresponding with each coin support is provided with on described sidewall, coin support passes through through hole after pin joint rotates.
3. higher mathematics demonstration device for probability according to claim 1, is characterized in that, described end cap is dish type, and the large end of described end cap is fixed on base, and the small end of described end cap is arranged upward, and when shifting part is in off working state, shifting part is hidden in end cap.
4. higher mathematics demonstration device for probability according to claim 1, is characterized in that, described mat is the sponge member be pasted onto on inclined-plane.
5. higher mathematics demonstration device for probability according to claim 3, is characterized in that, described base is circular working of plastics, and the motor driving poke rod to rotate is arranged in the square hole of base top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520193569.4U CN204537550U (en) | 2015-04-01 | 2015-04-01 | Higher mathematics demonstration device for probability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520193569.4U CN204537550U (en) | 2015-04-01 | 2015-04-01 | Higher mathematics demonstration device for probability |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204537550U true CN204537550U (en) | 2015-08-05 |
Family
ID=53751522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520193569.4U Withdrawn - After Issue CN204537550U (en) | 2015-04-01 | 2015-04-01 | Higher mathematics demonstration device for probability |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204537550U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104715655A (en) * | 2015-04-01 | 2015-06-17 | 白依川 | Advanced mathematics probability presentation device |
| CN106971652A (en) * | 2017-06-02 | 2017-07-21 | 李维波 | Maths demonstration device |
| CN110288879A (en) * | 2019-06-27 | 2019-09-27 | 淮阴师范学院 | A kind of mathematical simulation apparatus for demonstrating under applied probability statistical theory |
| CN110570728A (en) * | 2019-09-25 | 2019-12-13 | 王旭 | Probability demonstration device |
-
2015
- 2015-04-01 CN CN201520193569.4U patent/CN204537550U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104715655A (en) * | 2015-04-01 | 2015-06-17 | 白依川 | Advanced mathematics probability presentation device |
| CN106971652A (en) * | 2017-06-02 | 2017-07-21 | 李维波 | Maths demonstration device |
| CN110288879A (en) * | 2019-06-27 | 2019-09-27 | 淮阴师范学院 | A kind of mathematical simulation apparatus for demonstrating under applied probability statistical theory |
| CN110570728A (en) * | 2019-09-25 | 2019-12-13 | 王旭 | Probability demonstration device |
| CN110570728B (en) * | 2019-09-25 | 2021-10-22 | 成都大学 | Probability demonstration device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150805 Effective date of abandoning: 20171114 |