CN201327684Y - Inertia law demonstration platform - Google Patents
Inertia law demonstration platform Download PDFInfo
- Publication number
- CN201327684Y CN201327684Y CNU2008202231034U CN200820223103U CN201327684Y CN 201327684 Y CN201327684 Y CN 201327684Y CN U2008202231034 U CNU2008202231034 U CN U2008202231034U CN 200820223103 U CN200820223103 U CN 200820223103U CN 201327684 Y CN201327684 Y CN 201327684Y
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- fixed plate
- inertia
- law
- tracks
- demo rack
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Abstract
The utility model discloses an inertia law demonstration platform which pertains to a teaching instrument and solves the teaching problems that the teaching process in partial chapters and links during physics teaching is too inflexible, the intuitiveness is poor, and the teaching process can not fully reflect that physics is an experimental science. The inertia law demonstration platform comprises a fixed bracket, a moving track, an inclined angle changing frame, a front fixed plate and a rear fixed plate; wherein the fixed bracket comprises a level fixed plate and a vertical baffle that is vertically fixed at one end of the level fixed plate; the inclined angle changing frame is L-shaped and the lower end of the inclined angle changing frame is arranged at one end opposite to the vertical baffle on the level fixed plate; the moving track is strip-shaped, the front end thereof is a fixed end which is fixed on the vertical baffle, and the tail end thereof is a movable end; and the front fixed plate and the rear fixed plate are vertically fixed at the two sides of the level fixed plate respectively and are vertically and fixedly connected with the vertical baffle. The inertia law demonstration platform has smart design, simple operation, good demonstration effect and quite high practical value.
Description
Technical field
The utility model relates to a kind of teaching demonstration frame, specifically, relates to a kind of law of inertia demo rack.
Background technology
The law of inertia is a crucial law of physics, in the actual physical teaching process, owing to lack suitable demonstration equipment, can't demonstrate intuitively.Therefore in actual teaching with probe in the process, under most of situations, the teacher all adopts the oral account teaching, explains the law of inertia by picture demonstration graph or employing flash demo in addition, above form of teaching all can not be given the visual experience of student image, the science cognitive law of " fact → science inference → put into practice " can not be experienced, the scientific research thought of physics " experiment → cognition → experiment " can not be embodied.Can not give full play to student's learning interest, teaching efficiency is relatively poor.
The utility model content
The purpose of this utility model is to provide a kind of law of inertia demo rack, the law of inertia can be reproduced in the student at the moment intuitively by this demo rack, makes the student understand the law of inertia faster and betterly, thereby improves teaching efficiency.
To achieve these goals, the technical solution adopted in the utility model:
Law of inertia demo rack, it is characterized in that, described law of inertia demo rack comprises that fixed support, tracks, inclination angle change frame, front shoe and rear fixed plate, fixed support comprises that horizontal fixed plate and vertical fixing are in the vertical baffle of horizontal fixed plate one end, it is " L " shape that the inclination angle changes frame, and its lower end is arranged at an end relative with vertical baffle on the horizontal fixed plate; Tracks into strips, front end is a stiff end, is fixed on the vertical baffle, end is a movable end, leans to the top that changes frame in the inclination angle; Front shoe and rear fixed plate are distinguished vertical fixing in the both sides of horizontal fixed plate, and all are connected with the vertical baffle vertical fixing.
Described law of inertia demo rack also is provided with tie rod and briquetting, and the front end of tie rod is fixed in the inclination angle by briquetting and changes on the frame.
Described tie rod end is
Shape.
Have aperture on the described vertical baffle, the stiff end of tracks is realized fixing by embedding aperture.
Described tracks bends to arc, and tangent with the horizontal fixed plate.
The surface of contact that described inclination angle changes frame and tracks is a cambered surface.
Described horizontal fixed plate lower surface also is provided with at least two counterbalance weights vertical with the horizontal fixed plate.
Described front shoe is made by transparent material.
Also be provided with the connecting rod that is used to connect front shoe and rear fixed plate between described front shoe top and the rear fixed plate top.
Described inertia demo rack also is provided with the track geometrical clamp, described track geometrical clamp is arranged at the top infall of tracks movable end and front shoe, rear fixed plate, and by the screw on the track geometrical clamp tracks movable end and front shoe, rear fixed plate is fixed.
Principle of the present utility model: by the pulling tie rod, making the inclination angle change frame front and back on the horizontal fixed plate moves, the movable end of tracks is owing to lean to the top that changes frame in the inclination angle, therefore, along with the inclination angle changes moving of frame, the movable end of tracks also moves under himself elastic force effect thereupon, makes the movement locus of ball on tracks change.
In the utility model, tracks is formed by the stronger material of toughness, such as thin steel plate, not only can change the track of the movable end of tracks during demonstration, can also select to demonstrate ball or other equipment of usefulness voluntarily, probe into phenomenon thereby demonstrate multiple vital phenomena and the science relevant with phenomenons such as inertia.Simultaneously, the utility model can also be demonstrated other law of physics, such as even change speed linear motion rule etc.Therefore, the utlity model has range of application widely.
The utility model design is ingenious, simple to operate, and cost of manufacture is low, good demonstration effect, and the learning interest of mobilizing students greatly, thus to improve the quality of teaching, very suitable teaching is promoted.The utility model belongs to a kind of teaching demonstration instrument.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the structural representation of the utility model middle orbit geometrical clamp.
Fig. 3 is the structural representation of the utility model-embodiment 1.
Fig. 4 is the structural representation of the utility model-embodiment 2.
Fig. 5 is the structural representation of the utility model-embodiment 3.
The corresponding title of label in the accompanying drawing: the 1-tracks, the 2-inclination angle changes frame, 3-front shoe, 4-rear fixed plate, 5-horizontal fixed plate, 6-vertical baffle, 7-aperture, 8-track geometrical clamp, 9-counterbalance weight, 10-connecting rod, 11-ball, 12-tie rod, 13-briquetting.
Embodiment
Below by giving an example the utility model is further specified.
As shown in Figure 3, law of inertia demo rack, it is characterized in that, described law of inertia demo rack comprises that fixed support, tracks 1, inclination angle change frame 2, front shoe 3 and rear fixed plate 4, fixed support comprises that horizontal fixed plate 5 and vertical fixing are in the vertical baffle 6 of horizontal fixed plate 5 one ends, it is " L " shape that the inclination angle changes frame 2, and its lower end is arranged on the horizontal fixed plate 5 end relative with vertical baffle 6; Tracks 1 into strips, be made by sheet steel, front end is a stiff end, by offering aperture 7 in the vertical baffle upper end, stiff end is embedded aperture 7 to be realized fixing, end is a movable end, leans to the top that changes frame 2 in the inclination angle, and by track geometrical clamp 8 that tracks 1 movable end, front shoe 3 and rear fixed plate 4 is fastening; Front shoe 3 and rear fixed plate 4 are distinguished vertical fixing in the both sides of horizontal fixed plate 5, and all are connected with vertical baffle 6 vertical fixing; Also be provided with tie rod 12 and briquetting 13 on the law of inertia demo rack, tie rod 12 front ends are fixed in the inclination angle by briquetting 13 and change on the frame 2, and end extends to the inclination angle and changes outside the frame 2, and pulling tie rod 12 can make the inclination angle change frame 2 and move on horizontal fixed plate 5.Horizontal fixed plate 5 lower surfaces also are provided with two counterbalance weights 9 that are used for the whole device of balance, also are provided with connecting rod 10 between the top of front shoe and rear fixed plate, are used to connect forward and backward fixed head, prevent that forward and backward fixed head from use rocking.
Tracks is bent to arc, and tangent with the horizontal fixed plate, and line and plane, horizontal fixed plate place that point of contact and inclination angle change top of the trellis form 60 ° of angles.Ball 11 is selected steel ball, steel ball is positioned over the static release in a certain position of stiff end of tracks 1, steel ball is the meeting rolls downward under action of gravity, in steel ball rolls downward process, the potential energy converting and energy of steel ball is a kinetic energy, because inertia, steel ball will continue to roll along tracks 1 then, back roll after himself kinetic energy runs out of again.Because resistance is unconquerable, the maximum height that steel ball can arrive will reduce one after another gradually.
As shown in Figure 4, embodiment 2 is with the difference of embodiment 1, among the embodiment 2, outside the horizontal fixed plate, spur tie rod, make the inclination angle change frame outside the horizontal fixed plate side shifting one end distance from, the line and plane, the horizontal fixed plate place formation angle that make point of contact and inclination angle change top of the trellis reduce, and are 30 °.Because the degree of tilt of tracks movable end is littler than the degree of tilt among the embodiment 1, repeats to implement 1 experiment, steel ball static release of same position from the stiff end of track 1.Therefore steel ball is when the tracks movable end rolls, because resistance reduces, so the energy that mobile phase distance together consumes reduces, steel ball can move farther distance at the tracks movable end.
As shown in Figure 5, embodiment 3 is with the difference of embodiment 1, among the embodiment 3, the inclination angle is changed frame pull out the horizontal fixed plate fully, and the tracks movable end is overlapped with the horizontal fixed plate.Repeat to implement 2 experiment, after steel ball arrived horizontal rail, because this moment, the tracks movable end was horizontal, the kinetic energy of steel ball no longer was converted to potential energy, and the very long distance of therefore will moving on horizontal rail goes out horizontal rail with " dashing " at last.
In the foregoing description, not only demonstrated the law of inertia,, can also demonstrate and study the characteristics of motion of steel ball on horizontal rail if cooperate timing to wait instrument (as flash camera).Presentation process is vivid, and student oneself can participate, thereby has improved student's learning initiative, has improved quality of instruction.
Claims (10)
1. law of inertia demo rack, it is characterized in that, described law of inertia demo rack comprises that fixed support, tracks (1), inclination angle change frame (2), front shoe (3) and rear fixed plate (4), fixed support comprises that horizontal fixed plate (5) and vertical fixing are in the vertical baffle (6) of horizontal fixed plate (5) one ends, it is " L " shape that the inclination angle changes frame (2), and its lower end is arranged at horizontal fixed plate (5) and goes up an end relative with vertical baffle (6); Tracks (1) into strips, front end is a stiff end, is fixed on the vertical baffle (6), end is a movable end, leans to the top that changes frame (2) in the inclination angle; Front shoe (3) and rear fixed plate (4) are distinguished vertical fixing in the both sides of horizontal fixed plate (5), and all are connected with vertical baffle (6) vertical fixing.
2. law of inertia demo rack according to claim 1 is characterized in that, described law of inertia demo rack also is provided with tie rod (12) and briquetting (13), and the front end of tie rod (12) is fixed in the inclination angle by briquetting (13) and changes on the frame (2).
3. law of inertia demo rack according to claim 2 is characterized in that, described tie rod (12) end be "
" shape.
4. law of inertia demo rack according to claim 1 is characterized in that, has aperture (7) on the described vertical baffle (6), and the stiff end of tracks (1) is realized fixing by embedding aperture (7).
5. law of inertia demo rack according to claim 1 is characterized in that, described tracks (1) bends to arc, and tangent with horizontal fixed plate (5).
6. law of inertia demo rack according to claim 2 is characterized in that, the surface of contact that described inclination angle changes frame (2) and tracks (1) is a cambered surface.
7. law of inertia demo rack according to claim 1 is characterized in that, described horizontal fixed plate (5) lower surface also is provided with at least two counterbalance weights (9) vertical with horizontal fixed plate (5).
8. law of inertia demo rack according to claim 1 is characterized in that, described front shoe (3) is made by transparent material.
9. law of inertia demo rack according to claim 1 is characterized in that, also is provided with the connecting rod (10) that is used to connect front shoe and rear fixed plate between described front shoe (3) top and rear fixed plate (4) top.
10. law of inertia demo rack according to claim 1, it is characterized in that, described inertia demo rack also is provided with track geometrical clamp (8), described track geometrical clamp (8) is arranged at the top infall of tracks (1) movable end and front shoe (3), rear fixed plate (4), and by the screw on the track geometrical clamp (8) tracks (1) movable end and front shoe (3), rear fixed plate (4) is fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202231034U CN201327684Y (en) | 2008-12-03 | 2008-12-03 | Inertia law demonstration platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202231034U CN201327684Y (en) | 2008-12-03 | 2008-12-03 | Inertia law demonstration platform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201327684Y true CN201327684Y (en) | 2009-10-14 |
Family
ID=41179649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202231034U Expired - Fee Related CN201327684Y (en) | 2008-12-03 | 2008-12-03 | Inertia law demonstration platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201327684Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103594011A (en) * | 2013-12-09 | 2014-02-19 | 江南大学 | Interesting rolling device |
| CN103778824A (en) * | 2014-02-14 | 2014-05-07 | 江南大学 | Rolling instrument |
-
2008
- 2008-12-03 CN CNU2008202231034U patent/CN201327684Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103594011A (en) * | 2013-12-09 | 2014-02-19 | 江南大学 | Interesting rolling device |
| CN103778824A (en) * | 2014-02-14 | 2014-05-07 | 江南大学 | Rolling instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091014 Termination date: 20101203 |