CN203415139U - Dynamics teaching aid - Google Patents
Dynamics teaching aid Download PDFInfo
- Publication number
- CN203415139U CN203415139U CN201320422079.8U CN201320422079U CN203415139U CN 203415139 U CN203415139 U CN 203415139U CN 201320422079 U CN201320422079 U CN 201320422079U CN 203415139 U CN203415139 U CN 203415139U
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- CN
- China
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- weight
- light
- dazzling screen
- pulley
- teaching aid
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- Expired - Fee Related
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Abstract
The utility model relates to a dynamics teaching aid. The dynamics teaching aid can be used for studying the relationship between force and motion. The technical scheme of the utility model for solving the technical problems is that: the dynamic teaching aid is characterized in that a vertical bracket is vertical to a base and is fixedly connected with the base, a cross bar is vertical to the vertical bracket, one end of the cross bar is fixedly connected with the vertical bracket, the other end is connected with a pulley, the rotating plane of the pulley is a vertical plane, a light rope spans the pulley, one end of the light rope is connected with a first weight, the other end is connected with a second weight, the mass of the second weight is greater than that of the first weight, the light rope is fixedly connected with a first light-shading piece and a second light-shading piece which are respectively in a rectangular shape, the first light-shading piece and the second light-shading piece are on the same vertical plane, the first light-shading piece and the second light-shading piece are distributed up and down, and positions of the two light-shading pieces are above that of the second weight. The utility model provides a new technical scheme for the field of dynamics teaching aid.
Description
Technical field
The utility model relates to a kind of mechanics teaching apparatus, in particular for dynamic (dynamical) apparatus for demonstrating.
Background technology
The relation of dynamics research force and motion, existing teaching aid is very abundant, still, can also supplement new technical scheme with the quantity that increases this area to adapt to different teaching demands.
Utility model content
In order to solve the deficiencies in the prior art, the utility model proposes a kind of dynamics teaching aid, the utility model can be used for studying the relation of force and motion.
The utility model solves the technical scheme that its technical matters adopts: a kind of dynamics teaching aid, comprise base, vertical rack, cross bar, pulley, light rope, the first weight, the second weight, the first anti-dazzling screen, the second anti-dazzling screen, it is characterized in that: vertical rack is perpendicular to base and be fixedly connected with, cross bar is vertical with vertical rack, and one end of cross bar is fixedly connected with vertical rack, the other end connects a pulley, and the rotational plane of pulley is perpendicular, a light rope strides across pulley, one end of light rope connects the first weight, the other end connects the second weight, and the quality of the second weight is greater than the quality of the first weight, light rope is fixedly connected with the first anti-dazzling screen and the second anti-dazzling screen that is shaped as rectangle, the first anti-dazzling screen and the second anti-dazzling screen are at same perpendicular, and the first anti-dazzling screen and the second anti-dazzling screen are distribution up and down, and the position of these two anti-dazzling screens is all above the second weight.
The utility model provides a kind of new technical scheme for dynamics teaching aid.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
1-base in figure, 2-vertical rack, 3-cross bar, 4-pulley, 5-gently restricts, 6-the first weight, 7-the second weight, 8-the first anti-dazzling screen, 9-the second anti-dazzling screen.
Embodiment
Below in conjunction with accompanying drawing, design and use of the present utility model are further illustrated.
Referring to accompanying drawing 1, be structural representation of the present utility model, a kind of dynamics teaching aid, comprises base 1, vertical rack 2, cross bar 3, pulley 4, gently restrict the 5, first weight 6, the second weight 7, the first anti-dazzling screen 8, the second anti-dazzling screen 9, and:
Using method: the first lighter weight 6 is pulled to and approaches base 1, then, loose one's grip, the first weight 6 moves upward, the second weight 7 moves downward, and a photoelectricity door (being also optocoupler) is placed in the position that anti-dazzling screen can also be passed through, and photoelectricity door can be selected flute profile optocoupler.Various equivalent modifications should be known and also has supporting photoelectrometer timer.
Measure the length of side of the first anti-dazzling screen 8, and measure the length of side of the second anti-dazzling screen 9, by photoelectricity door and the photoelectrometer timer that is connected with photoelectricity door, can know that anti-dazzling screen passes through the photoelectricity door time used, so just can know speed.
Further the distance of two anti-dazzling screens can also be measured, just acceleration can be known.
Further the quality of two weights can also be measured, just the certain law in dynamics can be verified.
The utility model is simple in structure, for dynamics teaching aid field provides a kind of new technical scheme.
Claims (1)
1. a dynamics teaching aid, comprise base (1), vertical rack (2), cross bar (3), pulley (4), light rope (5), the first weight (6), the second weight (7), the first anti-dazzling screen (8), the second anti-dazzling screen (9), it is characterized in that: vertical rack (2) is perpendicular to base (1) and be fixedly connected with, cross bar (3) is vertical with vertical rack (2), and one end of cross bar (3) is fixedly connected with vertical rack (2), the other end connects a pulley (4), and the rotational plane of pulley (4) is perpendicular, a light rope (5) strides across pulley (4), one end of light rope (5) connects the first weight (6), the other end connects the second weight (7), and the quality of the second weight (7) is greater than the quality of the first weight (6), light rope (5) is fixedly connected with the first anti-dazzling screen (8) and the second anti-dazzling screen (9) that is shaped as rectangle, the first anti-dazzling screen (8) and the second anti-dazzling screen (9) are at same perpendicular, and the first anti-dazzling screen (8) is up and down and distributes with the second anti-dazzling screen (9), and the position of these two anti-dazzling screens is all in the top of the second weight (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320422079.8U CN203415139U (en) | 2013-07-17 | 2013-07-17 | Dynamics teaching aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320422079.8U CN203415139U (en) | 2013-07-17 | 2013-07-17 | Dynamics teaching aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203415139U true CN203415139U (en) | 2014-01-29 |
Family
ID=49978015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320422079.8U Expired - Fee Related CN203415139U (en) | 2013-07-17 | 2013-07-17 | Dynamics teaching aid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203415139U (en) |
-
2013
- 2013-07-17 CN CN201320422079.8U patent/CN203415139U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140129 Termination date: 20140717 |
|
| EXPY | Termination of patent right or utility model |