CN112289142A - Probability statistics teaching presentation device - Google Patents
Probability statistics teaching presentation device Download PDFInfo
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- CN112289142A CN112289142A CN202011230559.5A CN202011230559A CN112289142A CN 112289142 A CN112289142 A CN 112289142A CN 202011230559 A CN202011230559 A CN 202011230559A CN 112289142 A CN112289142 A CN 112289142A
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- fixedly connected
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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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- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a probability statistics teaching demonstration device, and belongs to the technical field of teaching devices. The utility model provides a probability statistics teaching presentation device, includes the box, fixedly connected with fixed plate in the box, the top of fixed plate is equipped with rotates the groove, it is equipped with the experiment ball to rotate the inslot, the inside fixedly connected with slide rail of box, it rotates the groove and connects in the slide rail to rotate, the bottom that rotates the groove is equipped with first opening, the bottom of fixed plate is equipped with the second opening with first opening matched with, the lateral wall threaded connection of box has first dwang, the bottom fixedly connected with second dwang that rotates the groove, the lateral wall fixedly connected with case that resets of box, the incasement that resets is equipped with the conveyer belt. The experimental ball resetting device is simple in internal structure and convenient to operate, the experimental ball can be randomly disturbed, the reasonability of the experimental result is ensured, and the experimental ball can be reset after one experiment is completed, so that the experimental device can be used for multiple experiments.
Description
Technical Field
The invention relates to the technical field of teaching devices, in particular to a probability statistics teaching demonstration device.
Background
The probability statistics concept is abstract and difficult to understand, so that a teacher is difficult to clearly describe the cognition of students by language in the teaching process, and great difficulty exists in teaching. In order to make students lay a solid foundation and make the students visually contact with the probability statistics concept, teachers need to perform probability statistics demonstration in teaching. The presentation device that uses at present operates complicacy, and random extraction demonstration bobble and demonstration bobble all need the manual operation to reset, expend time, and demonstration inefficiency exists artificial subjective factor in the extraction process simultaneously, makes the demonstration result deviate from appearing, and the unable height-adjusting of device simultaneously can not satisfy numerous student's observation, under this kind of condition, we propose a probability statistics teaching presentation device.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a probability statistics teaching demonstration device.
In order to achieve the purpose, the invention adopts the following technical scheme:
a probability statistics teaching demonstration device comprises a box body, wherein a fixed plate is fixedly connected in the box body, a rotating groove is formed in the top of the fixed plate, an experimental ball is arranged in the rotating groove, a sliding rail is fixedly connected in the box body, the rotating groove is rotatably connected in the sliding rail, a first opening is formed in the bottom of the rotating groove, a second opening matched with the first opening is formed in the bottom of the fixed plate, a first rotating rod is in threaded connection with the side wall of the box body, a second rotating rod is fixedly connected at the bottom of the rotating groove, a reset box is fixedly connected with the side wall of the box body, a conveying belt is arranged in the reset box and comprises two rotating shafts, a cylinder and a belt, the cylinder is connected to the outer wall of the rotating shaft, the two rotating shafts are rotatably connected to the inner wall of the reset box, and a, one of the rotating shafts is connected with the output end of the motor, a belt is arranged on the cylinder, and a plurality of baffles are arranged on the belt.
Preferably, the first rotating rod is fixedly connected with a driving gear, and the second rotating rod is fixedly connected with a driven gear meshed with the driving gear.
Preferably, two telescopic links of fixedly connected with of the bottom symmetry of box, two the equal fixedly connected with supporting leg of one end that the box was kept away from to the telescopic link, two fixedly connected with diaphragm between the lateral wall of supporting leg, the top fixedly connected with cylinder of diaphragm, the output of cylinder offsets with the bottom of box.
Preferably, the bottom of the second opening is connected with a falling pipe, one end of the falling pipe, which is far away from the second opening, is communicated with the side wall of the reset box, and the top of the reset box is also connected with a reset pipe.
Preferably, one end of the first rotating rod, which is far away from the driving gear, is rotatably connected with a handle, and the handle is provided with anti-skid grains.
Preferably, the top of the transverse plate is provided with a balancing weight.
Preferably, the top of the box body is provided with a ball inlet.
Preferably, one end of the reset tube, which is far away from the reset box, is connected right above the rotating groove.
Preferably, the bottom of box is equipped with the motion groove, the one end rotation connection in the motion groove of keeping away from the rotation groove of second dwang.
Preferably, the reset tube is arranged obliquely.
Compared with the prior art, the invention provides a probability statistics teaching demonstration device, which has the following beneficial effects:
1. this probability statistics teaching presentation device when carrying out probability statistics teaching demonstration, puts the experiment ball of different colours through the goal mouth and rotates the inslot, then rotates the rotating groove, carries out random sampling, and concrete operating procedure is: the handle is rotated to drive the first rotating rod to rotate, the driving gear on the first rotating rod rotates along with the first rotating rod and drives the driven gear meshed with the first rotating rod to rotate, after the driven gear rotates, the rotating groove fixedly connected with the top of the driven gear is driven to rotate in the sliding rail, the experimental ball in the rotating groove is disturbed, the randomness of sampling is guaranteed, the probability statistical result is accurate, when the first opening at the bottom of the rotating groove is superposed with the second opening at the bottom of the fixed plate, the experimental ball falls into the falling pipe communicated with the second opening and enters the reset box connected with the side wall of the box body, after the experimental ball enters the reset box, the motor is started to drive the rotating shaft to rotate, the belt on the conveying belt is driven to rotate by the rotating shaft, at the moment, the experimental ball is driven to ascend by a plurality of baffles on the belt, and after the experimental ball reaches the highest position of the conveying belt, the experimental, the device can be used for carrying out repeated experiments.
2. This probability statistics teaching presentation device, when watching the student of teaching demonstration too much, can also adjust the height of box to this whole demonstration process of guaranteeing to see, concrete method is: the cylinder on the diaphragm is started, the output end of the cylinder offsets with the bottom of the box body, the box body is pushed to ascend, when the box body ascends, the telescopic rod on the supporting leg stretches out and draws back, the stability of the box body is kept, and meanwhile, the balancing weight on the diaphragm can effectively guarantee the stability of the demonstration device in the process of demonstration.
The device has the advantages that the internal structure is simple, the operation is convenient, the experimental ball can be randomly disturbed, the reasonability of the experimental result is ensured, and the experimental ball can reset after one experiment is completed, so that the device can carry out experiments for many times.
Drawings
FIG. 1 is a schematic structural diagram of a probability statistics teaching demonstration apparatus according to the present invention;
FIG. 2 is a side view of a reset box of a probability statistics teaching demonstration apparatus according to the present invention;
FIG. 3 is a schematic diagram of a partial structure of a probability statistics teaching demonstration apparatus according to the present invention;
FIG. 4 is an enlarged view of a portion A of FIG. 1 of a probability statistics teaching demonstration apparatus according to the present invention;
fig. 5 is a top view of a rotation slot of a probability statistics teaching demonstration apparatus according to the present invention.
In the figure: 1. a box body; 2. a ball inlet; 3. a fixing plate; 4. a slide rail; 5. a rotating groove; 6. an experimental ball; 7. a first opening; 8. a second opening; 9. a first rotating lever; 10. a driving gear; 11. a handle; 12. a second rotating lever; 13. a driven gear; 14. a motion groove; 15. dropping the pipe; 16. a reset box; 17. a rotating shaft; 18. a motor; 19. a cylinder; 20. a belt; 21. a baffle plate; 22. a reset tube; 23. supporting legs; 24. a transverse plate; 25. a cylinder; 26. a telescopic rod; 27. and a balancing weight.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Example 1:
referring to fig. 1-5, a probability statistics teaching demonstration device comprises a box body 1, a fixed plate 3 is fixedly connected in the box body 1, a rotating groove 5 is arranged at the top of the fixed plate 3, an experimental ball 6 is arranged in the rotating groove 5, a sliding rail 4 is fixedly connected in the box body 1, the rotating groove 5 is rotatably connected in the sliding rail 4, a first opening 7 is arranged at the bottom of the rotating groove 5, a second opening 8 matched with the first opening 7 is arranged at the bottom of the fixed plate 3, a first rotating rod 9 is connected to the side wall of the box body 1 in a threaded manner, a second rotating rod 12 is fixedly connected to the bottom of the rotating groove 5, a reset box 16 is fixedly connected to the side wall of the box body 1, a conveyor belt is arranged in the reset box 16 and comprises two rotating shafts 17, a cylinder 19 and a belt 20, the cylinder 19 is connected to the outer wall of the rotating shaft 17, the two rotating shafts, one of the shafts 17 is connected to the output of a motor 18, a belt 20 is provided on the cylinder 19, and a plurality of baffles 21 are provided on the belt 20.
A driving gear 10 is fixedly connected to the first rotating rod 9, and a driven gear 13 engaged with the driving gear 10 is fixedly connected to the second rotating rod 12.
The bottom of the second opening 8 is connected with a falling pipe 15, one end of the falling pipe 15, which is far away from the second opening 8, is communicated with the side wall of the reset box 16, and the top of the reset box 16 is also connected with a reset pipe 22.
One end of the first rotating rod 9, which is far away from the driving gear 10, is rotatably connected with a handle 11, and the handle 11 is provided with anti-skid grains.
The top of the box body 1 is provided with a ball inlet 2.
The end of the reset tube 22 remote from the reset box 16 is connected directly above the rotary slot 5.
The bottom of the box body 1 is provided with a moving groove 14, and one end of the second rotating rod 12 far away from the rotating groove 5 is rotatably connected in the moving groove 14.
The reset tube 22 is obliquely disposed.
In the invention, when probability statistics teaching demonstration is carried out, experimental balls 6 with different colors are placed into a rotating groove 5 through a ball inlet 2, then the rotating groove 5 is rotated, random sampling is carried out, and the specific operation steps are as follows: the handle 11 is rotated to drive the first rotating rod 9 to rotate, the driving gear 10 on the first rotating rod 9 rotates along with the first rotating rod and drives the driven gear 13 meshed with the first rotating rod to rotate, the driven gear 13 rotates to drive the rotating groove 5 fixedly connected with the top of the driven gear to rotate in the slide rail 4, the experimental ball 6 in the rotating groove 5 is disturbed, the randomness of sampling is ensured, the probability statistical result is accurate, when the first opening 7 at the bottom of the rotating groove 5 and the second opening 8 at the bottom of the fixed plate 3 coincide, the experimental ball 6 falls into the falling pipe 15 communicated with the second opening 8 and enters the reset box 16 connected with the side wall of the box body 1, the motor 18 is started after the experimental ball 6 enters the reset box 16, the motor 18 drives the rotating shaft 17 to rotate, the belt 20 on the conveying belt is driven to rotate after the rotating shaft 17 rotates, at the moment, a plurality of baffle plates 21 on the belt 20 drive the experimental ball 6 to, after reaching the highest position of the conveying belt, the reset pipe 22 which is obliquely arranged automatically falls into the rotating groove 5 in the box body 1, so that the device can carry out repeated experiments for a plurality of times.
Example 2:
referring to fig. 1-5, a probability statistics teaching demonstration device comprises a box body 1, a fixed plate 3 is fixedly connected in the box body 1, a rotating groove 5 is arranged at the top of the fixed plate 3, an experimental ball 6 is arranged in the rotating groove 5, a sliding rail 4 is fixedly connected in the box body 1, the rotating groove 5 is rotatably connected in the sliding rail 4, a first opening 7 is arranged at the bottom of the rotating groove 5, a second opening 8 matched with the first opening 7 is arranged at the bottom of the fixed plate 3, a first rotating rod 9 is connected to the side wall of the box body 1 in a threaded manner, a second rotating rod 12 is fixedly connected to the bottom of the rotating groove 5, a reset box 16 is fixedly connected to the side wall of the box body 1, a conveyor belt is arranged in the reset box 16 and comprises two rotating shafts 17, a cylinder 19 and a belt 20, the cylinder 19 is connected to the outer wall of the rotating shaft 17, the two rotating shafts, one of the shafts 17 is connected to the output of a motor 18, a belt 20 is provided on the cylinder 19, and a plurality of baffles 21 are provided on the belt 20.
Two telescopic links 26 of fixedly connected with of bottom symmetry of box 1, the equal fixedly connected with supporting leg 23 of one end that box 1 was kept away from to two telescopic links 26, fixedly connected with diaphragm 24 between the lateral wall of two supporting legs 23, the top fixedly connected with cylinder 25 of diaphragm 24, the output of cylinder 25 offsets with the bottom of box 1.
The top of the horizontal plate 24 is provided with a balancing weight 27.
In the invention, when too many students watching teaching demonstration are available, the height of the box body 1 can be adjusted to ensure the whole demonstration process which can be watched, and the specific method is as follows: starting cylinder 25 on diaphragm 24, the output of cylinder 25 will offset with the bottom of box 1, promotes box 1 and rises, and when box 1 rose, telescopic link 26 on supporting leg 23 will stretch out and draw back, keeps box 1's stability, and simultaneously, the balancing weight 27 on diaphragm 24 can guarantee effectively that the demonstration in-process improves the stability of device.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. The probability statistics teaching demonstration device comprises a box body (1) and is characterized in that a fixed plate (3) is fixedly connected in the box body (1), a rotating groove (5) is arranged at the top of the fixed plate (3), an experiment ball (6) is arranged in the rotating groove (5), a sliding rail (4) is fixedly connected in the box body (1), the rotating groove (5) is rotatably connected in the sliding rail (4), a first opening (7) is arranged at the bottom of the rotating groove (5), a second opening (8) matched with the first opening (7) is arranged at the bottom of the fixed plate (3), a first rotating rod (9) is in threaded connection with the side wall of the box body (1), a second rotating rod (12) is fixedly connected at the bottom of the rotating groove (5), a reset box (16) is fixedly connected with the side wall of the box body (1), a conveying belt is arranged in the reset box (16), the conveyer belt includes two pivot (17), drum (19) and belt (20), the outer wall at pivot (17) is connected to drum (19), two pivot (17) rotate the inner wall of connecting at reset box (16), the outer wall of reset box (16) is fixedly connected with motor (18) still, one of them pivot (17) link to each other with the output of motor (18), be equipped with belt (20) on drum (19), be equipped with a plurality of baffles (21) on belt (20).
2. A probability statistics teaching demonstration device according to claim 1, characterized in that a driving gear (10) is fixedly connected to the first rotating rod (9), and a driven gear (13) engaged with the driving gear (10) is fixedly connected to the second rotating rod (12).
3. The probability statistics teaching demonstration device according to claim 1, wherein the bottom of the box body (1) is symmetrically and fixedly connected with two telescopic rods (26), two telescopic rods (26) are respectively and fixedly connected with supporting legs (23) at the ends far away from the box body (1), two transverse plates (24) are fixedly connected between the side walls of the supporting legs (23), the top of each transverse plate (24) is fixedly connected with an air cylinder (25), and the output end of each air cylinder (25) is abutted to the bottom of the box body (1).
4. A probability statistics teaching demonstration device according to claim 1, characterized in that a drop tube (15) is connected to the bottom of the second opening (8), one end of the drop tube (15) far from the second opening (8) is communicated with the side wall of the reset box (16), and a reset tube (22) is connected to the top of the reset box (16).
5. The probability statistics teaching demonstration device according to claim 1, wherein a handle (11) is rotatably connected to one end of the first rotating rod (9) far away from the driving gear (10), and anti-skid threads are arranged on the handle (11).
6. A probability statistics teaching demonstration device according to claim 3, characterised in that the top of the cross plate (24) is provided with a weight block (27).
7. A probability statistics teaching demonstration device according to claim 3, characterized in that the top of the box body (1) is provided with a ball inlet (2).
8. A probability statistics teaching demonstration device according to claim 4, characterised in that the end of the reset tube (22) remote from the reset box (16) is connected directly above the turning groove (5).
9. A probability statistics teaching demonstration device according to claim 7, characterized in that the bottom of the box body (1) is provided with a moving groove (14), and one end of the second rotating rod (12) far away from the rotating groove (5) is rotatably connected in the moving groove (14).
10. A probabilistic teaching demonstration device according to claim 8, wherein the reset tube (22) is inclined.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011230559.5A CN112289142A (en) | 2020-11-06 | 2020-11-06 | Probability statistics teaching presentation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011230559.5A CN112289142A (en) | 2020-11-06 | 2020-11-06 | Probability statistics teaching presentation device |
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| Publication Number | Publication Date |
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| CN112289142A true CN112289142A (en) | 2021-01-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011230559.5A Pending CN112289142A (en) | 2020-11-06 | 2020-11-06 | Probability statistics teaching presentation device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112885200A (en) * | 2021-02-03 | 2021-06-01 | 淮南师范学院 | Mathematical probability demonstration device |
| CN113160668A (en) * | 2021-04-30 | 2021-07-23 | 电子科技大学成都学院 | Touch screen type mathematical statistics demonstrator |
| CN113223380A (en) * | 2021-05-20 | 2021-08-06 | 电子科技大学成都学院 | Mathematics probability learning device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206097601U (en) * | 2016-08-12 | 2017-04-12 | 王娜娜 | Probability statistics presentation device |
| CN108720279A (en) * | 2018-06-15 | 2018-11-02 | 张素平 | A kind of teaching desk that suitable instruments used for education use |
| CN109729843A (en) * | 2019-02-24 | 2019-05-10 | 桐乡市常新农机专业合作社 | A kind of agricultural stalk crushing recyclable device |
| CN211787761U (en) * | 2020-02-15 | 2020-10-27 | 刘向伟 | Probability calculation demonstration equipment for mathematical education |
-
2020
- 2020-11-06 CN CN202011230559.5A patent/CN112289142A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206097601U (en) * | 2016-08-12 | 2017-04-12 | 王娜娜 | Probability statistics presentation device |
| CN108720279A (en) * | 2018-06-15 | 2018-11-02 | 张素平 | A kind of teaching desk that suitable instruments used for education use |
| CN109729843A (en) * | 2019-02-24 | 2019-05-10 | 桐乡市常新农机专业合作社 | A kind of agricultural stalk crushing recyclable device |
| CN211787761U (en) * | 2020-02-15 | 2020-10-27 | 刘向伟 | Probability calculation demonstration equipment for mathematical education |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112885200A (en) * | 2021-02-03 | 2021-06-01 | 淮南师范学院 | Mathematical probability demonstration device |
| CN112885200B (en) * | 2021-02-03 | 2022-11-01 | 淮南师范学院 | Mathematical probability demonstration device |
| CN113160668A (en) * | 2021-04-30 | 2021-07-23 | 电子科技大学成都学院 | Touch screen type mathematical statistics demonstrator |
| CN113160668B (en) * | 2021-04-30 | 2023-10-13 | 电子科技大学成都学院 | Touch screen type mathematical statistics demonstrator |
| CN113223380A (en) * | 2021-05-20 | 2021-08-06 | 电子科技大学成都学院 | Mathematics probability learning device |
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Application publication date: 20210129 |
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