CN213781352U - Probability event simulation teaching aid for mathematics in middle school - Google Patents
Probability event simulation teaching aid for mathematics in middle school Download PDFInfo
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- CN213781352U CN213781352U CN202022633347.3U CN202022633347U CN213781352U CN 213781352 U CN213781352 U CN 213781352U CN 202022633347 U CN202022633347 U CN 202022633347U CN 213781352 U CN213781352 U CN 213781352U
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- nut
- threaded rod
- transparent disc
- probability
- fixedly connected
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Abstract
The utility model discloses a middle school mathematics probability event simulation teaching aid, including the probability carousel, the probability carousel includes body frame and carousel, the carousel rotates the upper portion of installing at the body frame, the body frame includes support column, nut, threaded rod and pointer, the inner fixed connection in the rear end of threaded rod in the upper portion of support column, nut screw thread installs in the anterior outer end of threaded rod, the rear end fixed connection of pointer is at the lower part front end of support column, the carousel includes transparent dish, buckle, boundary rod and jack, transparent dish rotates the middle part outer end of installing at the threaded rod, transparent dish is located between support column and the nut, threaded rod and nut contactless, buckle evenly distributed is at the central rear portion of transparent dish, the buckle is as an organic whole with transparent dish fixed connection, the one end lock joint of boundary rod is at the inner wall of buckle. The utility model relates to a teaching equipment technical field, operation and demonstration that can be better, better satisfying the use needs.
Description
Technical Field
The utility model relates to a teaching equipment technical field specifically is a middle school mathematics probability event simulation teaching aid.
Background
The interval range of the conventional mathematical probability event demonstration turntable is usually fixed and unchangeable, the use is not flexible enough, and in the demonstration simulation process, time is wasted by waiting for the rotation and the stop of the turntable, so that a scheme capable of relieving the problems is urgently needed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a middle school mathematics probability incident simulation teaching aid to solve the problem of proposing in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a probability event simulation teaching aid for mathematics in middle school comprises a probability turntable, wherein the probability turntable comprises a main frame and a turntable, and the turntable is rotatably arranged on the upper part of the main frame; the main frame comprises a support column, a nut, a threaded rod and a pointer, wherein the inner end of the upper part of the support column is fixedly connected to the rear end of the threaded rod, the nut is installed at the outer end of the front part of the threaded rod in a threaded manner, and the rear end of the pointer is fixedly connected to the front end of the lower part of the support column; the carousel includes transparent dish, buckle, boundary rod and jack, transparent dish rotates and installs the middle part outer end at the threaded rod, transparent dish is located between support column and the nut, the threaded rod and nut contactless, buckle evenly distributed is at the central rear portion of transparent dish, the buckle is as an organic whole with transparent dish fixed connection, the one end lock joint of boundary rod is at the inner wall of buckle, the inner wall at the jack is installed in the other end sliding plug of boundary rod, the quantity of jack and the quantity phase-match of buckle, the inside wall at transparent dish is evenly seted up to the jack, the lower part of transparent dish is located the inboard of pointer, pointer and transparent dish contactless.
Preferably, the main frame further comprises a cushion block, the cushion block is fixedly installed at the outer end of the rear portion of the threaded rod in a sleeved mode, the transparent disc is located between the cushion block and the nut, and the transparent disc is in sliding contact with the cushion block.
Preferably, the main frame further comprises a pair of knobs, and the knobs are fixedly connected with the nuts.
Preferably, the main frame further comprises a return spring, the return spring is movably sleeved on the outer side of the threaded rod, the return spring is fixedly connected with the nut, and one end, back to the nut, of the return spring is fixedly connected with the threaded rod.
Preferably, the main frame further comprises a fixing seat, and the lower end of the supporting column is fixedly connected to the upper end of the fixing seat.
Compared with the prior art, the beneficial effects of the utility model are as follows:
when a user needs to adjust the area of the partition, the user firstly pokes the buckle inwards by hands to enable the buckle to generate inward elastic deformation, so that the inner end of the boundary rod loses the clamping acting force, then pulls the boundary rod inwards to enable the boundary rod to leave the inner part of the jack, finally takes the boundary rod down backwards, clamps the boundary rod to the inner end of the other group of buckles and the jack, and achieves the purpose of changing the interval by changing the gap between the boundary rods; in the use process, marks are written on the front side of the transparent disc, then the transparent disc is rotated, when a user needs to brake the transparent disc, the nut is screwed by hand, the transparent disc is squeezed by the nut to achieve the purpose of braking the transparent disc, the purpose of saving simulation time is achieved by braking the transparent disc, and after the transparent disc stops rotating, the nut is screwed back; the cushion block is supported on the rear wall of the transparent disc, so that the transparent disc can be protected by the cushion block after the nut extrudes the transparent disc; the manual operation of the nut is facilitated through the knob; the quick recovery of the nut after braking is facilitated through the return spring.
Drawings
FIG. 1 is a schematic view of the main structure of the present invention;
fig. 2 is a schematic structural view of the main frame of the present invention;
fig. 3 is a schematic view of the turntable structure of the present invention.
In the figure: 1. a probability carousel; 2. a main frame; 3. a turntable; 4. a support pillar; 5. cushion blocks; 6. a nut; 7. a knob; 8. a threaded rod; 9. a return spring; 10. a pointer; 11. a fixed seat; 12. a transparent disc; 13. buckling; 14. a boundary rod; 15. and (4) inserting the jack.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to 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.
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 that are relative to each other, are merely for convenience of description and to simplify the description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Referring to fig. 1-3, the present invention provides an embodiment: a probability event simulation teaching aid for mathematics in middle school comprises a probability turntable 1, wherein the probability turntable 1 comprises a main frame 2 and a turntable 3, and the turntable 3 is rotatably arranged on the upper part of the main frame 2; the main frame 2 comprises a support pillar 4, a nut 6, a threaded rod 8 and a pointer 10, wherein the inner end of the upper part of the support pillar 4 is fixedly connected to the rear end of the threaded rod 8, the nut 6 is installed at the outer end of the front part of the threaded rod 8 in a threaded manner, and the rear end of the pointer 10 is fixedly connected to the front end of the lower part of the support pillar 4; the rotary disc 3 comprises a transparent disc 12, buckles 13, boundary rods 14 and jacks 15, the transparent disc 12 is rotatably installed at the outer end of the middle part of the threaded rod 8, the transparent disc 12 is located between the support column 4 and the nut 6, the threaded rod 8 is not in contact with the nut 6, the buckles 13 are uniformly distributed at the rear part of the center of the transparent disc 12, the buckles 13 and the transparent disc 12 are fixedly connected into a whole, one end of the boundary rod 14 is buckled on the inner wall of the buckle 13, the other end of the boundary rod 14 is slidably inserted and installed on the inner wall of the jacks 15, the number of the jacks 15 is matched with the number of the buckles 13, the jacks 15 are uniformly arranged on the inner side wall of the transparent disc 12, the lower part of the transparent disc 12 is located on the inner side of the pointer 10, and the pointer 10 is not in contact with the transparent disc 12; when a user needs to adjust the area of the partition, the user firstly pokes the buckle 13 inwards by hands to enable the buckle 13 to generate inward elastic deformation, the inner end of the boundary rod 14 loses clamping acting force, then pulls the boundary rod 14 inwards to enable the boundary rod 14 to leave the inner part of the jack 15, finally takes the boundary rod 14 backwards, then clamps the boundary rod 14 to the inner ends of the other group of buckles 13 and the jack 15, and achieves the purpose of changing the interval by changing the gap between the boundary rods 14; in the using process, marks are written on the front side of the transparent disc 12, then the transparent disc 12 is rotated, when a user needs to brake the transparent disc 12, the nut 6 is screwed by hand, the transparent disc 12 is squeezed by the nut 6 to achieve the purpose of braking the transparent disc 12, the purpose of saving simulation time is achieved by braking the transparent disc 12, and after the transparent disc 12 stops rotating, the nut 6 is screwed back.
The main frame 2 further comprises a cushion block 5, the cushion block 5 is fixedly sleeved at the outer end of the rear part of the threaded rod 8, the transparent disc 12 is positioned between the cushion block 5 and the nut 6, and the transparent disc 12 is in sliding contact with the cushion block 5; the back wall of the transparent plate 12 is supported by the spacer 5, so that the transparent plate 12 can be protected by the spacer 5 after the nut 6 presses the transparent plate 12.
The main frame 2 also comprises a pair of knobs 7, and the knobs 7 are fixedly connected with the nuts 6; the manual operation nut 6 is convenient to rotate through the knob 7.
The main frame 2 further comprises a return spring 9, the return spring 9 is movably sleeved on the outer side of the threaded rod 8, the return spring 9 is fixedly connected with the nut 6, and one end, back to the nut 6, of the return spring 9 is fixedly connected with the threaded rod 8; the quick recovery of the nut 6 after braking is facilitated by the return spring 9.
The main frame 2 further comprises a fixing seat 11, and the lower end of the supporting column 4 is fixedly connected to the upper end of the fixing seat 11.
The working principle is as follows: when a user needs to adjust the area of the partition, the user firstly pokes the buckle 13 inwards by hands to enable the buckle 13 to generate inward elastic deformation, the inner end of the boundary rod 14 loses clamping acting force, then pulls the boundary rod 14 inwards to enable the boundary rod 14 to leave the inner part of the jack 15, finally takes the boundary rod 14 backwards, then clamps the boundary rod 14 to the inner ends of the other group of buckles 13 and the jack 15, and achieves the purpose of changing the interval by changing the gap between the boundary rods 14; in the using process, marks are written on the front side of the transparent disc 12, then the transparent disc 12 is rotated, when a user needs to brake the transparent disc 12, the nut 6 is screwed by hand, the transparent disc 12 is squeezed by the nut 6 to achieve the purpose of braking the transparent disc 12, the purpose of saving simulation time is achieved by braking the transparent disc 12, and after the transparent disc 12 stops rotating, the nut 6 is screwed back; the back wall of the transparent disc 12 is supported by the cushion block 5, so that the transparent disc 12 can be protected by the cushion block 5 after the nut 6 presses the transparent disc 12; the manual operation of the nut 6 is facilitated through the knob 7; the quick recovery of the nut 6 after braking is facilitated by the return spring 9.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a middle school mathematics probability incident simulation teaching aid which characterized in that: the probability turntable comprises a probability turntable (1), wherein the probability turntable (1) comprises a main frame (2) and a turntable (3), and the turntable (3) is rotatably arranged on the upper part of the main frame (2); the main frame (2) comprises a supporting column (4), a nut (6), a threaded rod (8) and a pointer (10), wherein the inner end of the upper part of the supporting column (4) is fixedly connected to the rear end of the threaded rod (8), the nut (6) is installed at the outer end of the front part of the threaded rod (8) in a threaded mode, and the rear end of the pointer (10) is fixedly connected to the front end of the lower part of the supporting column (4); the rotary table (3) comprises a transparent disc (12), buckles (13), a boundary rod (14) and a jack (15), the transparent disc (12) is rotatably installed at the outer end of the middle of a threaded rod (8), the transparent disc (12) is located between a support column (4) and a nut (6), the threaded rod (8) is not in contact with the nut (6), the buckles (13) are uniformly distributed at the rear center of the transparent disc (12), the buckles (13) are fixedly connected with the transparent disc (12) into a whole, one end of the boundary rod (14) is buckled on the inner wall of the buckles (13), the other end of the boundary rod (14) is slidably inserted and installed on the inner wall of the jack (15), the number of the jacks (15) is matched with the number of the buckles (13), the jacks (15) are uniformly arranged on the inner side wall of the transparent disc (12), the lower portion of the transparent disc (12) is located on the inner side of a pointer (10), the pointer (10) and the transparent disc (12) are not in contact.
2. The probability event simulation teaching aid for mathematics in middle schools according to claim 1, wherein: the main frame (2) further comprises a cushion block (5), the cushion block (5) is fixedly connected to the outer end of the rear portion of the threaded rod (8) in a sleeved mode, the transparent disc (12) is located between the cushion block (5) and the nut (6), and the transparent disc (12) is in sliding contact with the cushion block (5).
3. The probability event simulation teaching aid for mathematics in middle schools according to claim 1, wherein: the main frame (2) further comprises a pair of knobs (7), and the knobs (7) are fixedly connected with the nuts (6).
4. The probability event simulation teaching aid for mathematics in middle schools according to claim 1, wherein: the main frame (2) further comprises a return spring (9), the return spring (9) is movably sleeved on the outer side of the threaded rod (8), the return spring (9) is fixedly connected with the nut (6), and one end, back to the nut (6), of the return spring (9) is fixedly connected with the threaded rod (8).
5. The probability event simulation teaching aid for mathematics in middle schools according to claim 1, wherein: the main frame (2) further comprises a fixing seat (11), and the lower end of the supporting column (4) is fixedly connected to the upper end of the fixing seat (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022633347.3U CN213781352U (en) | 2020-11-16 | 2020-11-16 | Probability event simulation teaching aid for mathematics in middle school |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022633347.3U CN213781352U (en) | 2020-11-16 | 2020-11-16 | Probability event simulation teaching aid for mathematics in middle school |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213781352U true CN213781352U (en) | 2021-07-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022633347.3U Expired - Fee Related CN213781352U (en) | 2020-11-16 | 2020-11-16 | Probability event simulation teaching aid for mathematics in middle school |
Country Status (1)
| Country | Link |
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| CN (1) | CN213781352U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113658488A (en) * | 2021-09-06 | 2021-11-16 | 安徽理工大学 | Probability theory experiment model teaching aid |
-
2020
- 2020-11-16 CN CN202022633347.3U patent/CN213781352U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113658488A (en) * | 2021-09-06 | 2021-11-16 | 安徽理工大学 | Probability theory experiment model teaching aid |
| CN113658488B (en) * | 2021-09-06 | 2023-01-17 | 安徽理工大学 | Probability theory experiment model teaching aid |
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210723 Termination date: 20211116 |
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| CF01 | Termination of patent right due to non-payment of annual fee |