CN111261003A - Probability demonstration device for mathematical teaching - Google Patents
Probability demonstration device for mathematical teaching Download PDFInfo
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- CN111261003A CN111261003A CN202010120733.4A CN202010120733A CN111261003A CN 111261003 A CN111261003 A CN 111261003A CN 202010120733 A CN202010120733 A CN 202010120733A CN 111261003 A CN111261003 A CN 111261003A
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- 238000013016 damping Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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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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- Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)
Abstract
A probability demonstration device for mathematical education is used for realizing the deduction of a classical probability formula. It includes: the top of the base is provided with an ear plate; the storage mechanism comprises a storage cylinder, a fixing ring fixed at the lower part of the storage cylinder, a pair of limiting plates arranged at the bottom of the fixing ring in a sliding manner, a spring arranged between the limiting plates and the fixing ring, a pair of wire wheels arranged at the upper part of the storage cylinder, and a pull wire arranged between the wire wheels and the corresponding limiting plates; the pushing mechanism is arranged on the left side of the storage cylinder and used for pushing the coin at the lowest part of the storage cylinder out to the right side of the storage cylinder; the throwing mechanism comprises a warping plate hinged with a base, a supporting plate fixed at the front end of the warping plate, and a driving unit arranged on the base and used for driving the warping plate to swing, wherein a groove is formed in the top of the base, and the supporting plate is arranged in the groove in a natural state. The device can conveniently realize the demonstration of probability.
Description
Technical Field
The invention relates to the technical field of advanced math teaching, in particular to a probability demonstration device for math teaching.
Background
Probability is one of the more difficult knowledge points to master by interpretation in higher mathematics, where classical probability is the concept of first contact in probability learning. For the deduction of the classical probability formula, more test times are needed as support.
Disclosure of Invention
The invention aims to provide a probability demonstration device for mathematical education, which is used for realizing deduction of a classical probability formula.
The technical scheme adopted by the invention for solving the technical problems is as follows: a probability presentation device for mathematical education, characterized by that, it includes:
the top of the base is provided with an ear plate;
the storage mechanism comprises a storage cylinder, a fixing ring fixed at the lower part of the storage cylinder, a pair of limiting plates arranged at the bottom of the fixing ring in a sliding manner, a spring arranged between the limiting plates and the fixing ring, a pair of wire wheels arranged at the upper part of the storage cylinder, and a pull wire arranged between the wire wheels and the corresponding limiting plates, wherein the limiting plates are arranged at the lower part of the inner cavity of the storage cylinder under the action of the spring, and the limiting plates are pulled by the pull wire to move away from the lower part of the inner cavity of the storage cylinder when the wire;
the pushing mechanism is arranged on the left side of the storage cylinder and used for pushing the coin at the lowest part of the storage cylinder out to the right side of the storage cylinder;
the throwing mechanism comprises a warping plate hinged with a base, a supporting plate fixed at the front end of the warping plate, and a driving unit arranged on the base and used for driving the warping plate to swing, wherein a groove is formed in the top of the base, and the supporting plate is arranged in the groove in a natural state.
Further, be equipped with a pair of mounting groove on solid fixed ring, first leading wheel and second leading wheel are installed to the mounting groove internal rotation, the first end and the limiting plate fixed connection of acting as go-between, the second end and the line wheel outer wall fixed connection of acting as go-between, and act as go-between and first, the equal contact of second leading wheel.
Furthermore, the wire wheel and the driven gear are coaxially arranged, and a driving gear meshed with the driven gear is rotatably arranged at the upper part of the storage cylinder.
Furthermore, the driving mechanism comprises a motor fixed on the base, a crank fixed at the output end of the motor and a connecting rod hinged with the rear end of the wane, and the connecting rod is further hinged with the crank.
Furthermore, a pair of support lugs is fixed at the top of the base, and the support lugs are hinged with the wane.
Furthermore, a fixing ring is fixed at the top of the base, the limiting ring is arranged on the inner side of the fixing ring, and the outer wall of the limiting ring is in contact with the inner wall of the fixing ring.
The invention has the beneficial effects that: the probability demonstration device for mathematical education provided by the invention has the advantages that coins fall under the dead weight, the coins moved out of the storage barrel are moved out of the storage barrel under the action of the pushing-out mechanism, and then are thrown out by the throwing mechanism, and then statistics is carried out.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a schematic view of FIG. 1 with the fence removed;
FIG. 3 is a schematic view of the ejection mechanism;
FIG. 4 is a schematic view of a slinger mechanism;
FIG. 5 is a schematic view of a storage mechanism;
FIG. 6 is a schematic view of the internal structure of the storage mechanism;
FIG. 7 is a view from the direction A of FIG. 5;
FIG. 8 is an enlarged view of a portion of FIG. 6 at B;
FIG. 9 is a schematic view of the placement of coins within the cartridge;
in the figure: the coin-freed type automatic feeding machine comprises a base 1, a coaming 11, a supporting lug 12, an electric telescopic rod 2, a push plate 21, a rocker 3, a supporting plate 31, an ear plate 32, a connecting rod 33, a crank 34, a motor 35, a positioning ring 4, an opening 41, a storage cylinder 5, a fixing ring 6, a limiting plate 61, a spring plate 611, a spring 612, a spring 62, a mounting groove 63, a first guide wheel 64, a second guide wheel 64, a stay wire 65, a wire wheel 66, a driven gear 67, a driving gear 68, a knob 69 and a coin 7.
Detailed Description
As shown in fig. 1 to 9, the present invention mainly comprises a base 1, a coaming 11, a pushing mechanism, a storage mechanism and a throwing mechanism, and the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1 and 2, the base 1 is a rectangular mechanism, and a surrounding plate 11 is fixed on the top of the base, and the surrounding plate is a closed structure and includes four side walls. The left end of the top of the base is provided with a positioning ring 4 which is of a circular ring structure. An opening 41 is provided in the side wall of the lower portion of the retaining ring to facilitate removal of the coin.
The storage mechanism is mounted on the positioning ring, as shown in fig. 5 to 9, the storage mechanism comprises a cylindrical storage cylinder 5, a fixing ring 6 fixed on the outer wall of the lower part of the storage cylinder, a pair of limiting plates 61 arranged on the left and right of the bottom of the fixing ring in a sliding manner, a first guide wheel 63 rotatably mounted in a mounting groove 62 on the fixing ring, a second guide wheel 64 rotatably mounted in a mounting groove on the fixing ring, a pair of wire wheels 66 rotatably mounted on the outer wall of the upper part of the storage cylinder, a driven gear 67 coaxially arranged with the wire wheels, a driving gear 68 rotatably mounted on the outer wall of the upper part of the storage cylinder, a pull wire 65 arranged between the limiting plate and the wire wheels, a spring plate 611 fixed at the bottom of the fixing ring, and a spring 612 arranged between the spring plate and the limiting plates, wherein a. The mounting groove is for controlling the a pair of that sets up, and the first end and the limiting plate fixed connection of acting as go-between, and act as go-between and first, second leading wheel contact back, and the second end winding of acting as go-between takes turns to the outer wall. One section of the limiting plate is arranged below the inner cavity of the storage cylinder under the action of the spring, so that the coin in the storage cylinder is lifted. When the knob is rotated, the stay wire can be wound on the wire wheel, and then the limiting plate is pulled to move away from the lower part of the inner cavity of the storage cylinder through the movement of the stay wire pulling limiting plate. After the limiting plate is removed from the lower part of the inner cavity of the storage barrel, the coins in the storage barrel fall under the action of self gravity. As shown in fig. 9, a coin 7 is placed in the storage cylinder. Be equipped with the damping piece between line wheel and the storage cylinder, the spring is fixed after compressing under the effect of damping piece like this, and limiting plate and solid fixed ring relatively fixed.
The base is provided with a push-out mechanism, as shown in fig. 3, the push-out mechanism comprises an electric telescopic rod 2 fixed at the top of the base and a push plate 21 fixed on the electric telescopic rod, and under the action of the electric telescopic rod, the push plate can pass through the notch to enter the positioning ring.
When the storage cylinder fixing device is used, the lower portion of the storage cylinder is arranged in the positioning ring, and the outer wall of the fixing ring is in contact with the inner wall of the positioning ring, so that the storage cylinder is fixed. The knob is rotated to drive the two limiting plates to move towards two sides, and when the limiting plates are moved away from the lower part of the inner cavity of the storage barrel, the coins 7 in the storage barrel fall under the dead weight and the coins at the lowest part are moved out of the storage barrel. The thickness of the pushing plate is equal to that of the coin and that of the limiting plate.
In order to throw coins, a throwing mechanism is further arranged at the top of the base, as shown in fig. 3 and 4, a pair of support lugs 12 are fixed at the top of the base, a warping plate 3 is hinged to the support lugs, a supporting plate 31 is fixed at the front end of the warping plate, and a groove for accommodating the supporting plate is formed in the top of the base. A motor 35 is fixed on the top of the base, a crank 34 is fixed on the output end of the motor, an ear plate 32 is fixed on the rear end of the rocker, a connecting rod 33 is arranged between the ear plate and the crank, and the connecting rod is hinged with the ear plate and the crank. Can drive the rocker under the effect of motor around the swing of pin joint, and when the rear end downstream of rocker, the layer board of rocker front end throws out the coin, and then realizes the throw to the coin. When the rear end of the wane is arranged at the highest point, the supporting plate is arranged in the groove, and the pushing mechanism can push out the coins in the storage cylinder to the supporting plate. The motor, the crank and the connecting rod constitute a driving unit.
The use of the invention is described below:
(1) placing the coins in the storage cylinder, then placing the storage cylinder on the fixing ring, and rotating the knob to enable the limiting plate to be moved away from the lower portion of the inner cavity of the storage cylinder;
(2) the push plate continuously reciprocates to enter and exit the fixed ring to push the coins in the storage cylinder to the supporting plate one by one;
(3) after the coins are placed on the supporting plate, the motor acts to throw out the coins;
(4) and counting the number of the coins with two upward faces after all the coins are thrown.
Claims (6)
1. A probability presentation device for mathematical education, characterized by that, it includes:
the top of the base is provided with an ear plate;
the storage mechanism comprises a storage cylinder, a fixing ring fixed at the lower part of the storage cylinder, a pair of limiting plates arranged at the bottom of the fixing ring in a sliding manner, a spring arranged between the limiting plates and the fixing ring, a pair of wire wheels arranged at the upper part of the storage cylinder, and a pull wire arranged between the wire wheels and the corresponding limiting plates, wherein the limiting plates are arranged at the lower part of the inner cavity of the storage cylinder under the action of the spring, and the limiting plates are pulled by the pull wire to move away from the lower part of the inner cavity of the storage cylinder when the wire;
the pushing mechanism is arranged on the left side of the storage cylinder and used for pushing the coin at the lowest part of the storage cylinder out to the right side of the storage cylinder;
the throwing mechanism comprises a warping plate hinged with a base, a supporting plate fixed at the front end of the warping plate, and a driving unit arranged on the base and used for driving the warping plate to swing, wherein a groove is formed in the top of the base, and the supporting plate is arranged in the groove in a natural state.
2. The probability demonstration device for mathematics teaching of claim 1, wherein the fixing ring is provided with a pair of mounting grooves, the first guide wheel and the second guide wheel are rotatably mounted in the mounting grooves, the first end of the stay wire is fixedly connected with the limiting plate, the second end of the stay wire is fixedly connected with the outer wall of the wire wheel, and the stay wire is in contact with both the first guide wheel and the second guide wheel.
3. A probability demonstration apparatus for use in mathematical education as claimed in claim 1 wherein the reel is coaxially disposed with the driven gear, and a driving gear engaged with the driven gear is rotatably mounted on the upper portion of the storage cylinder.
4. The probability demonstration device for mathematics teaching of claim 1, wherein the driving mechanism comprises a motor fixed on the base, a crank fixed on the output end of the motor, and a connecting rod hinged with the rear end of the wane, and the connecting rod is further hinged with the crank.
5. A probability demonstration device as claimed in claim 1 wherein a pair of support lugs are fixed to the top of the base, the support lugs being hinged to the rocker.
6. The probability demonstration device for mathematics teaching of claim 1, wherein a fixing ring is fixed on the top of the base, the limit ring is arranged inside the fixing ring and the outer wall of the limit ring is in contact with the inner wall of the fixing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010120733.4A CN111261003A (en) | 2020-02-26 | 2020-02-26 | Probability demonstration device for mathematical teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010120733.4A CN111261003A (en) | 2020-02-26 | 2020-02-26 | Probability demonstration device for mathematical teaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111261003A true CN111261003A (en) | 2020-06-09 |
Family
ID=70947427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010120733.4A Pending CN111261003A (en) | 2020-02-26 | 2020-02-26 | Probability demonstration device for mathematical teaching |
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| Country | Link |
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| CN (1) | CN111261003A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR456700A (en) * | 1913-01-20 | 1913-09-02 | Charles Stine Batdorf | Automatic coin wrapping machine |
| GB464684A (en) * | 1935-10-18 | 1937-04-19 | British Insulated Cables Ltd | Improvements relating to prepayment meters |
| WO2002086841A1 (en) * | 2001-04-20 | 2002-10-31 | Educational Testing Service | A latent property diagnosing procedure |
| KR20070119159A (en) * | 2006-06-14 | 2007-12-20 | 주식회사 네오테크 | Horizontal feeding apparatus |
| CN104715655A (en) * | 2015-04-01 | 2015-06-17 | 白依川 | Advanced mathematics probability presentation device |
| CN206115799U (en) * | 2016-07-15 | 2017-04-19 | 六盘水师范学院 | High probability learning device for mathematics education |
| CN106781884A (en) * | 2017-02-04 | 2017-05-31 | 刘本祜 | Students ' Learning demonstration device for probability |
| CN206774037U (en) * | 2017-04-06 | 2017-12-19 | 江鑫媛 | A kind of mathematical probabilities demonstration device |
| CN108230835A (en) * | 2018-01-30 | 2018-06-29 | 张家梁 | A kind of higher mathematics demonstration device for probability |
| CN109272827A (en) * | 2018-11-09 | 2019-01-25 | 山东劳动职业技术学院（山东劳动技师学院） | Probability learning secondary presentation device |
| CN211604465U (en) * | 2020-02-26 | 2020-09-29 | 菏泽学院 | Probability demonstration device for mathematical teaching |
-
2020
- 2020-02-26 CN CN202010120733.4A patent/CN111261003A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR456700A (en) * | 1913-01-20 | 1913-09-02 | Charles Stine Batdorf | Automatic coin wrapping machine |
| GB464684A (en) * | 1935-10-18 | 1937-04-19 | British Insulated Cables Ltd | Improvements relating to prepayment meters |
| WO2002086841A1 (en) * | 2001-04-20 | 2002-10-31 | Educational Testing Service | A latent property diagnosing procedure |
| KR20070119159A (en) * | 2006-06-14 | 2007-12-20 | 주식회사 네오테크 | Horizontal feeding apparatus |
| CN104715655A (en) * | 2015-04-01 | 2015-06-17 | 白依川 | Advanced mathematics probability presentation device |
| CN206115799U (en) * | 2016-07-15 | 2017-04-19 | 六盘水师范学院 | High probability learning device for mathematics education |
| CN106781884A (en) * | 2017-02-04 | 2017-05-31 | 刘本祜 | Students ' Learning demonstration device for probability |
| CN206774037U (en) * | 2017-04-06 | 2017-12-19 | 江鑫媛 | A kind of mathematical probabilities demonstration device |
| CN108230835A (en) * | 2018-01-30 | 2018-06-29 | 张家梁 | A kind of higher mathematics demonstration device for probability |
| CN109272827A (en) * | 2018-11-09 | 2019-01-25 | 山东劳动职业技术学院（山东劳动技师学院） | Probability learning secondary presentation device |
| CN211604465U (en) * | 2020-02-26 | 2020-09-29 | 菏泽学院 | Probability demonstration device for mathematical teaching |
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