CN211654040U - College mathematics probability incident teaching presentation device - Google Patents
College mathematics probability incident teaching presentation device Download PDFInfo
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- CN211654040U CN211654040U CN202020809965.6U CN202020809965U CN211654040U CN 211654040 U CN211654040 U CN 211654040U CN 202020809965 U CN202020809965 U CN 202020809965U CN 211654040 U CN211654040 U CN 211654040U
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- 238000007599 discharging Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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Abstract
The utility model discloses a university mathematics probability incident teaching presentation device, including the presentation device body, the presentation device body includes mount pad, fixed mounting at the transparent casing at mount pad top, is equipped with probability ball discharge pipe in the transparent casing, and the bottom of probability ball discharge pipe extends to the below of mount pad, and the fixed cover of mount pad is established on probability ball discharge pipe, the below of mount pad is equipped with the base, and first through-hole has been seted up to one side of base, and the equal fixed mounting in bottom both sides of mount pad has a rectangular pipe, the bottom of rectangular pipe and the top movable contact of base. The utility model relates to a rationally, be convenient for adjust transparent housing's high position according to actual need, the staff at the back of being convenient for watches, improves the teaching quality, and when the demonstration, is convenient for collect the probability ball, avoids appearing the phenomenon that the probability ball scatters, and can pour the probability ball of collecting and be convenient for use next time, satisfies the user demand.
Description
Technical Field
The utility model relates to a teaching demonstration equipment technical field especially relates to a college mathematics probability incident teaching presentation device.
Background
Probability is a measure of the probability of a random event occurring, and generally represents the magnitude of the probability of an event occurring in terms of a real number between 0 and 1, with events more likely to occur closer to 1; the closer to 0, the more unlikely the event is to occur, which is objective demonstration rather than subjective verification, most of the probability teaching processes of university mathematics are the explanation of probability theory by teachers at present, and because of no specific demonstration process, students can hardly completely understand the specific contents of the probability only by studying theoretically, and through retrieval, application numbers: 201720116262.3 discloses a university mathematics probability event teaching demonstration device in the technical field of teaching equipment, which comprises a transparent shell, a driving motor is arranged in the middle of the inner cavity of the transparent shell, a shaft sleeve is sleeved on the outer wall of an output shaft of the driving motor, rocking bars are uniformly arranged on the outer wall of the shaft sleeve, an arc-shaped kickplate is arranged at the outer end of each rocking bar, the outer wall of each arc-shaped kickplate is in contact with the inner wall of the transparent shell, the driving motor drives the rocker to stir the probability ball, so that the probability teaching can have a solid demonstration process, the learning interest of students is increased, the students can understand the probability specifically, the teaching quality is improved, meanwhile, the continuous repeated explanation of the teachers is not needed, the teaching burden of the teachers is reduced, the teaching process is improved, and the number and the labels of the probability balls can be increased or decreased according to the teaching content, so that teaching demonstration of different probabilities can be achieved.
Although the teaching demonstration of probability can be realized to above-mentioned patent, it still has some inadequacies, it is not convenient for collect the probability ball when the probability ball is discharged, in the above-mentioned patent, the probability ball directly drops to desktop or subaerial from discharging in the probability ball discharge tube, probability ball scattering phenomenon appears easily, and be not convenient for adjust presentation device's high position, when presentation device places and demonstrates on the desktop, if presentation device is lower, the phenomenon that the follow classmate can not see appears easily, and then influence the teaching quality, can not satisfy the user demand, therefore we have proposed a college mathematics probability event teaching presentation device and have been used for solving above-mentioned problem.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects existing in the prior art and providing a college mathematics probability event teaching demonstration device.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a demonstration device for university mathematics probability event teaching comprises a demonstration device body, wherein the demonstration device body comprises a mounting seat and a transparent shell fixedly arranged at the top of the mounting seat, a probability ball discharge pipe is arranged in the transparent shell, the bottom end of the probability ball discharge pipe extends to the lower part of the mounting seat, the mounting seat is fixedly sleeved on the probability ball discharge pipe, a base is arranged below the mounting seat, a first through hole is formed in one side of the base, rectangular pipes are fixedly arranged on two sides of the bottom of the mounting seat, the bottom end of each rectangular pipe is in movable contact with the top of the base, two positioning rods are fixedly arranged on two sides of the top of the base, the top ends of the positioning rods extend into the corresponding rectangular pipes, the same first screw rod is rotatably arranged between the two positioning rods in the same rectangular pipe, the bottom end of the first screw rod extends into the first through hole and is, the same moving block is fixedly arranged between the inner walls of the two sides of the rectangular tube, the moving block is slidably sleeved on the two corresponding positioning rods, the moving block is in threaded sleeve on the corresponding first screw rods, the same large gear is meshed between the two first gears, the rotating shaft is rotatably arranged on the inner wall of the bottom of the first through hole, the top end of the rotating shaft extends to the upper part of the base and is fixedly provided with a knob, the large gear is fixedly sleeved on the rotating shaft, the knob is in threaded fastening on the top of the base, the front side of the mounting seat is provided with two rectangular grooves with the bottoms arranged in an opening, the bottom of the mounting seat is in movable contact with the transparent collecting box, the probability ball discharge tube is positioned in the transparent collecting box, the transparent collecting box is positioned between the two rectangular tubes, the rectangular blocks are fixedly arranged on the two sides of the top of the transparent collecting box, the tops of the rectangular blocks, the rear side inner wall of the rectangular groove is fixedly provided with a second screw rod, the rectangular block sleeves the corresponding second screw rods, the front ends of the second screw rods extend to the front side of the mounting seat, the second screw rods are provided with nuts in a threaded sleeve mode, and the rear sides of the nuts are in movable contact with the front sides of the corresponding rectangular blocks.
Preferably, the top of the moving block is provided with a threaded hole, and the threaded hole is in threaded connection with the corresponding first screw.
Preferably, two first circular holes are formed in the top of the moving block, and the inner walls of the first circular holes are connected with the outer sides of the corresponding positioning rods in a sliding mode.
Preferably, the top of the base is movably contacted with a fastening bolt, and the knob is sleeved on the fastening bolt in a threaded manner.
Preferably, a rotating groove is formed in the inner wall of the bottom of the first through hole, a second circular hole is formed in the inner wall of the top of the first through hole, a first bearing is fixedly sleeved in the rotating groove and the second circular hole, and the inner ring of the first bearing is fixedly sleeved with the outer side of the rotating shaft.
Preferably, one side of each of the two positioning rods in the same rectangular tube, which is close to each other, is fixedly provided with the same second bearing, and the inner ring of the second bearing is fixedly sleeved with the outer side of the corresponding first screw rod.
Preferably, a third circular hole is formed in the front side of the rectangular block, the second screw is located in the third circular hole, the inner wall of the third circular hole is not in contact with the outer side of the corresponding second screw, and the outer side of the rectangular block is in movable contact with the inner wall of the corresponding rectangular groove.
Compared with the prior art, the beneficial effects of the utility model are that:
through the matching of the mounting seat, the transparent shell, the probability discharging pipe, the base, the rectangular pipe, the first screw, the positioning rod, the moving block, the first through hole, the first gear, the gear wheel, the rotating shaft, the transparent collecting box, the rectangular groove, the rectangular block, the second screw and the nut, when demonstration is carried out, the probability ball enters the transparent collecting box through the probability discharging pipe, the transparent collecting box can collect the probability ball, when the probability ball in the transparent collecting box needs to be taken out, the two nuts are rotated forward and respectively moved down from the corresponding second screws, the transparent collecting box is pulled forward to drive the two rectangular blocks to respectively take down from the corresponding second screws, the probability ball in the transparent collecting box can be poured out, when the height position of the transparent shell needs to be adjusted according to actual needs, the forward rotating fastening bolt is separated from the top of the base, then the forward rotating knob drives the gear wheel to rotate through the rotating shaft, the gear wheel drives the two first screw rods to rotate through the two first gears, the first screw rods drive the corresponding moving blocks to move upwards while rotating, the two moving blocks drive the mounting seat to move upwards while driving the transparent shell to move upwards through the two rectangular pipes, and the mounting seat stops rotating the knob when driving the transparent shell to move upwards to a required height, so that the transparent shell is fixed.
The utility model relates to a rationally, be convenient for adjust transparent housing's high position according to actual need, the staff at the back of being convenient for watches, improves the teaching quality, and when the demonstration, is convenient for collect the probability ball, avoids appearing the phenomenon that the probability ball scatters, and can pour the probability ball of collecting and be convenient for use next time, satisfies the user demand.
Drawings
Fig. 1 is a schematic structural diagram of a university mathematics probability event teaching demonstration device provided by the utility model;
fig. 2 is a schematic cross-sectional structural diagram of a university mathematics probability event teaching demonstration device provided by the utility model;
fig. 3 is an enlarged schematic view of a portion a in fig. 2.
In the figure: the device comprises a mounting seat 1, a transparent shell 2, a probability discharge pipe 3, a base 4, a rectangular pipe 5, a first screw rod 6, a positioning rod 7, a moving block 8, a first through hole 9, a first gear 10, a large gear 11, a rotating shaft 12, a transparent collection box 13, a rectangular groove 14, a rectangular block 15, a second screw rod 16 and a nut 17.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1-3, a demonstration device for university mathematics probability event teaching, comprising a demonstration device body, wherein the demonstration device body comprises a mounting seat 1, a transparent shell 2 fixedly installed on the top of the mounting seat 1, a probability ball discharge pipe 3 is arranged in the transparent shell 2, the bottom end of the probability ball discharge pipe 3 extends to the lower part of the mounting seat 1, the mounting seat 1 is fixedly sleeved on the probability ball discharge pipe 3, a base 4 is arranged below the mounting seat 1, a first through hole 9 is arranged on one side of the base 4, rectangular pipes 5 are fixedly installed on both sides of the bottom of the mounting seat 1, the bottom end of each rectangular pipe 5 is in movable contact with the top of the base 4, two positioning rods 7 are fixedly installed on both sides of the top of the base 4, the top ends of the positioning rods 7 extend into the corresponding rectangular pipes 5, the same first screw 6 is rotatably installed between the two positioning rods 7 in, the bottom end of the first screw 6 extends into the first through hole 9 and is fixedly provided with a first gear 10, the same moving block 8 is fixedly arranged between the inner walls at the two sides of the rectangular tube 5, the moving block 8 is slidably sleeved on the corresponding two positioning rods 7, the moving block 8 is in threaded sleeve on the corresponding first screw 6, the same big gear 11 is meshed between the two first gears 10, the inner wall at the bottom of the first through hole 9 is rotatably provided with a rotating shaft 12, the top end of the rotating shaft 12 extends to the upper part of the base 4 and is fixedly provided with a knob, the big gear 11 is fixedly sleeved on the rotating shaft 12, the knob is in threaded fastening at the top of the base 4, the front side of the mounting seat 1 is provided with two rectangular grooves 14 with the bottoms provided with openings, the bottom of the mounting seat 1 is movably contacted with a transparent collecting box 13, the probability ball discharging tube 3 is arranged in the transparent collecting, both sides of the top of the transparent collecting box 13 are fixedly provided with rectangular blocks 15, the tops of the rectangular blocks 15 extend into the corresponding rectangular grooves 14, the rear sides of the rectangular blocks 15 are movably contacted with the inner walls of the rear sides of the corresponding rectangular grooves 14, the inner walls of the rear sides of the rectangular grooves 14 are fixedly provided with second screw rods 16, the rectangular blocks 15 are sleeved on the corresponding second screw rods 16, the front ends of the second screw rods 16 extend to the front sides of the mounting seats 1, the screw thread sleeves on the second screw rods 16 are provided with nuts 17, the rear sides of the nuts 17 are movably contacted with the front sides of the corresponding rectangular blocks 15, the utility model has reasonable design, is convenient for adjusting the height position of the transparent shell 2 according to the actual requirement, is convenient for the following personnel to watch and improve the teaching quality, and is convenient for collecting probability balls during demonstration, avoids the phenomenon of probability ball scattering, and can pour the collected probability balls out for the next use, the use requirement is met.
In the utility model, the top of the moving block 8 is provided with a threaded hole which is in threaded connection with a corresponding first screw 6, the top of the moving block 8 is provided with two first circular holes, the inner wall of the first circular hole is in sliding connection with the outer sides of corresponding positioning rods 7, the top of the base 4 is in movable contact with a fastening bolt, a knob threaded sleeve is arranged on the fastening bolt, the inner wall of the bottom of the first through hole 9 is provided with a rotating groove, the inner wall of the top of the first through hole 9 is provided with a second circular hole, the rotating groove and the second circular hole are both fixedly sleeved with a first bearing, the inner ring of the first bearing is fixedly sleeved with the outer side of the rotating shaft 12, one side of the two positioning rods 7 which are positioned in the same rectangular pipe 5 and close to each other is fixedly provided with the same second bearing, the inner ring of the second bearing is fixedly sleeved with the outer side of the corresponding first, second screw rod 16 is located the third circular hole, and the inner wall in third circular hole and the outside contactless of the second screw rod 16 that corresponds, rectangular block 15's the outside and the inner wall movable contact of the rectangular channel 14 that corresponds, the utility model relates to a rationally, be convenient for adjust transparent housing 2's high position according to actual need, the personnel at the back of being convenient for watch, improve the teaching quality, and when the demonstration, be convenient for collect the probability ball, avoid appearing the phenomenon that the probability ball scatters, and can pour the probability ball of collecting and be convenient for next time use, satisfy the user demand.
The working principle is as follows: when the probability ball is used for demonstration, the probability ball enters the transparent collection box 13 through the probability discharge pipe 3, the transparent collection box 13 can collect the probability ball, the probability ball is prevented from scattering, when the probability ball in the transparent collection box 13 needs to be taken out, the two nuts 17 are rotated in the forward direction, the nuts 17 are gradually moved down from the corresponding second screw rods 16 while rotating, the transparent collection box 13 is pulled forward, the transparent collection box 13 drives the two rectangular blocks 15 to be respectively taken down from the corresponding second screw rods 16, the probability ball in the transparent collection box 13 can be poured out, after the probability ball is taken out, the rectangular blocks 15 are aligned with the corresponding rectangular grooves 14, the transparent collection box 13 is pushed backward, the transparent collection box 13 drives the two rectangular blocks 15 to be respectively moved into the corresponding rectangular grooves 14, the rectangular blocks 15 are sleeved on the corresponding second screw rods 16, and then the nuts 17 are rotated reversely, the nut 17 can be sleeved on the corresponding second screw 16, so that the transparent collection box 13 is fixed;
when the transparent shell 2 is too low to be watched or demonstrated by a person conveniently and the height position of the transparent shell 2 needs to be adjusted according to actual needs, the fastening bolt is rotated in the forward direction, the fastening bolt is gradually separated from the top of the base 4 while rotating, and further the fixing of the knob is released, then the knob is rotated in the forward direction, the knob drives the rotating shaft 12 to rotate, the rotating shaft 12 drives the large gear 11 to rotate, the large gear 11 drives the two first gears 10 to rotate, the first gears 10 drive the corresponding first screw rods 6 to rotate, under the action of the threaded holes formed in the tops of the moving blocks 8, the first screw rods 6 drive the corresponding moving blocks 8 to move upwards while rotating, the moving blocks 8 drive the corresponding rectangular tubes 5 to move upwards, the two rectangular tubes 5 simultaneously drive the mounting seats 1 to move upwards, the mounting seats 1 drive the transparent shell 2 to move upwards, and when the transparent shell 2 moves upwards to the required height, stop rotating the knob, under the screw hole and the 6 screw thread locking damping force effect of first screw rod that correspond for transparent housing 2 is fixed, and reverse rotation fastening bolt is followed, and the position removes to the top in close contact with base 4 when fastening bolt rotates, and then makes the knob fixed, makes to be convenient for adjust transparent housing 2's high position according to actual need, and the personnel of the back of being convenient for watch, improve the quality of teaching.
In the description of the present application, it should be further noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, a connection through an intermediate medium, and a connection between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to specific circumstances.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (7)
1. The demonstration device for the university mathematics probability event teaching comprises a demonstration device body, wherein the demonstration device body comprises a mounting seat (1) and a transparent shell (2) fixedly mounted at the top of the mounting seat (1), a probability ball discharge pipe (3) is arranged in the transparent shell (2), the bottom end of the probability ball discharge pipe (3) extends to the lower part of the mounting seat (1), and the mounting seat (1) is fixedly sleeved on the probability ball discharge pipe (3), the demonstration device is characterized in that a base (4) is arranged below the mounting seat (1), a first through hole (9) is formed in one side of the base (4), rectangular pipes (5) are fixedly mounted on two sides of the bottom of the mounting seat (1), the bottom ends of the rectangular pipes (5) are in movable contact with the top of the base (4), two positioning rods (7) are fixedly mounted on two sides of the top of the base (4), and the top ends of the positioning rods (7) extend into the corresponding rectangular pipes (5, a same first screw rod (6) is rotatably arranged between two positioning rods (7) positioned in a same rectangular tube (5), the bottom end of the first screw rod (6) extends into a first through hole (9) and is fixedly provided with a first gear (10), a same moving block (8) is fixedly arranged between the inner walls of two sides of the rectangular tube (5), the moving block (8) is slidably sleeved on the corresponding two positioning rods (7), the moving block (8) is in threaded sleeve on the corresponding first screw rod (6), a same big gear (11) is meshed between the two first gears (10), a rotating shaft (12) is rotatably arranged on the inner wall of the bottom of the first through hole (9), the top end of the rotating shaft (12) extends to the upper part of the base (4) and is fixedly provided with a knob, the big gear (11) is fixedly sleeved on the rotating shaft (12), the knob is in threaded fastening at the top of the base (4), the front side of the mounting seat (1) is provided with two rectangular grooves (14) with the bottoms being open, the bottom of the mounting seat (1) is movably contacted with a transparent collecting box (13), the probability ball discharging pipe (3) is positioned in the transparent collecting box (13), the transparent collecting box (13) is positioned between two rectangular pipes (5), two sides of the top of the transparent collecting box (13) are fixedly provided with rectangular blocks (15), the tops of the rectangular blocks (15) extend into the corresponding rectangular grooves (14), the rear sides of the rectangular blocks (15) are movably contacted with the inner walls of the rear sides of the corresponding rectangular grooves (14), the inner walls of the rear sides of the rectangular grooves (14) are fixedly provided with second screw rods (16), the rectangular blocks (15) are sleeved on the corresponding second screw rods (16), the front ends of the second screw rods (16) extend to the front sides of the mounting seat (1), and nuts (17) are sleeved on the second screw rods (16), the rear side of the nut (17) is movably contacted with the front side of the corresponding rectangular block (15).
2. The university mathematics probability event teaching demonstration device according to claim 1, characterized in that the top of the moving block (8) is equipped with a threaded hole, and the threaded hole is in threaded connection with the corresponding first screw (6).
3. The university mathematics probability event teaching demonstration device according to claim 1, characterized in that the top of the moving block (8) is provided with two first circular holes, and the inner walls of the first circular holes are slidably connected with the outer sides of the corresponding positioning rods (7).
4. The university mathematics probability event teaching demonstration device according to claim 1, characterized in that the top of the base (4) is movably contacted with a fastening bolt, and the knob is threaded on the fastening bolt.
5. The university mathematics probability event teaching demonstration device according to claim 1, wherein the bottom inner wall of the first through hole (9) is provided with a rotating groove, the top inner wall of the first through hole (9) is provided with a second circular hole, the rotating groove and the second circular hole are both fixedly sleeved with a first bearing, and the inner ring of the first bearing is fixedly sleeved with the outer side of the rotating shaft (12).
6. The university mathematics probability event teaching demonstration device according to claim 1, characterized in that the side of two positioning rods (7) in the same rectangular pipe (5) close to each other is fixedly installed with the same second bearing, and the inner ring of the second bearing is fixedly sleeved with the outer side of the corresponding first screw (6).
7. A university mathematics probability event teaching demonstration device according to claim 1, characterized in that the front side of the rectangular block (15) is provided with a third circular hole, the second screw (16) is located in the third circular hole, the inner wall of the third circular hole is not in contact with the outer side of the corresponding second screw (16), and the outer side of the rectangular block (15) is in movable contact with the inner wall of the corresponding rectangular groove (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020809965.6U CN211654040U (en) | 2020-05-15 | 2020-05-15 | College mathematics probability incident teaching presentation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020809965.6U CN211654040U (en) | 2020-05-15 | 2020-05-15 | College mathematics probability incident teaching presentation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211654040U true CN211654040U (en) | 2020-10-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020809965.6U Expired - Fee Related CN211654040U (en) | 2020-05-15 | 2020-05-15 | College mathematics probability incident teaching presentation device |
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| Country | Link |
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| CN (1) | CN211654040U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112555595A (en) * | 2020-12-03 | 2021-03-26 | 重庆工程职业技术学院 | But real time monitoring analysis's computer teaching device |
| CN112634714A (en) * | 2020-12-28 | 2021-04-09 | 山东交通学院 | Higher mathematics probability presentation device |
| CN113870666A (en) * | 2021-11-09 | 2021-12-31 | 甘肃民族师范学院 | Probability calculation demonstration equipment for mathematical education |
-
2020
- 2020-05-15 CN CN202020809965.6U patent/CN211654040U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112555595A (en) * | 2020-12-03 | 2021-03-26 | 重庆工程职业技术学院 | But real time monitoring analysis's computer teaching 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 |
| CN113870666A (en) * | 2021-11-09 | 2021-12-31 | 甘肃民族师范学院 | Probability calculation demonstration equipment for mathematical education |
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Granted publication date: 20201009 |