CN206441420U - A kind of centripetal force teaching platform - Google Patents
A kind of centripetal force teaching platform Download PDFInfo
- Publication number
- CN206441420U CN206441420U CN201720037647.0U CN201720037647U CN206441420U CN 206441420 U CN206441420 U CN 206441420U CN 201720037647 U CN201720037647 U CN 201720037647U CN 206441420 U CN206441420 U CN 206441420U
- Authority
- CN
- China
- Prior art keywords
- centripetal force
- bead
- pressure sensor
- crossbeam
- platform
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The utility model discloses a kind of centripetal force teaching platform, it includes demo platform（1）With at least two centripetal force experimental provisions（2）, at least two centripetal force experimental provisions include turning arm（3）, turning arm include shaft coupling base（301）, bead bracket（302）, crossbeam（303）And graduated scale（304）, shaft coupling base is provided with crossbeam, and crossbeam is provided with the graduated scale, and bead bracket includes at least one turning arm guide barrel construction（305）, bead pallet base（306）With pressure sensor installation pedestal（307）；Demo platform is provided with least two digital display voltmeters（7）With speed governing knob（8）, digital display voltmeter is electrically connected in the anti-jamming signal amplifier（5）, demo platform is provided with least two motors（11）；The shaft coupling base of at least two centripetal force experimental provisions passes through motor（11）Rotating shaft（13）On demo platform.The utility model uses centripetal force teaching platform, and teaching demonstration effect is good.
Description
Technical field
The utility model is related to centripetal force teaching demonstration technical field, more particularly to a kind of centripetal force teaching platform.
Background technology
Centripetal force occupies critical role in physics teaching in secondary school, refers to work as object circumferentially or curve track does even
During speed motion, the center of circle is pointed to（The center of curvature）Bonding force active force.Traditional centripetal force teaching demonstration instruments are used in classroom
Aspect has problems, and centripetal force teaching demonstration instruments traditional first are to coordinate colour circle demonstration centripetal using pulling force floating drum
The size of power, teaching demonstration effect is poor, and secondly traditional centripetal force teaching platform is to produce circumference fortune using hand mode
Dynamic, whole presentation process medium velocity can not be stablized, and teaching demonstration effect is poor.
Utility model content
There is provided a kind of good centripetal force teaching demonstration of teaching demonstration effect in view of the shortcomings of the prior art for the utility model
Platform.
It solves the technical scheme that is used of technical problem：A kind of centripetal force teaching platform, it is flat that it includes demonstration
Platform and at least two centripetal force experimental provisions, centripetal force experimental provision described at least two include turning arm, the turning arm bag
Shaft coupling base, bead bracket, crossbeam and graduated scale are included, the shaft coupling base is provided with crossbeam, and the crossbeam is provided with
The graduated scale, the bead bracket includes at least one turning arm guide barrel construction, bead pallet base and pressure sensor
Installation pedestal, the bead pallet base lower end is provided with least one described turning arm guide barrel construction, the turning arm guide groove knot
Structure is on the crossbeam, and the bead pallet base side is provided with pressure sensor installation pedestal, the bead pallet base
Bead guide groove is provided with, the bead guide groove is provided with bead, and the pressure sensor installation pedestal is provided with pressure sensor,
The pressure sensor side is provided with anti-jamming signal amplifier, and described crossbeam one end is additionally provided with pressure sensing transmitter；
The demo platform is provided with least two digital display voltmeters and at least two speed governing knobs, the digital display voltmeter
The anti-jamming signal amplifier is electrically connected to, the demo platform side is additionally provided with charging connector and power switch, described to drill
Show and at least two motors are additionally provided with platform, the motor is provided with speed regulator；
The shaft coupling base of centripetal force experimental provision described at least two is flat located at the demonstration by the rotating shaft of motor
On.
Preferably, the pressure sensor is semiconductor pressure sensor.
Preferably, the motor is 2, and it is rotating speed 250rpm, moment of torsion 4.3kg cm direct current generator.
Preferably, the digital display voltmeter is 4.
Preferably, the speed governing knob is 2.
The beneficial effects of the utility model are that, by using centripetal force teaching platform, teaching demonstration effect is good；Using
Pressure sensor coordinates digital display voltmeter to show centripetal force, intuitively demonstrates centripetal force F and quality m, radius r and angular velocity omega
Between relation, the specific size of centripetal force can be accurately shown by data, teaching demonstration effect is good；Pressure sensor is partly to lead
Pressure sensor, small volume, light weight, degree of accuracy height, good temp characteristic；Using anti-jamming signal amplifier, anti-interference energy
Power is strong, and is easier to be received and gathered data；It is engaged, is realized real with speed regulator and digital display manometer by direct current generator
Turning arm rotary course stepless time adjustment during testing, whole presentation process medium velocity is stable, and solves traditional centripetal force
Demo platform needed in the overall process of experiment teacher ceaselessly crank handle provide turning arm rotating speed pattern.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
1. demo platform in figure, 2. centripetal force experimental provisions, 3. turning arms, 301. shaft coupling bases, 302. beads
Bracket, 303. crossbeams, 304. graduated scales, 305. turning arm guide barrel constructions, 306. bead pallet bases, 307. pressure
Sensor installation pedestal, 308. bead guide grooves, 309. beads, 4. pressure sensors, 5. anti-jamming signal amplifiers, 6.
Pressure sensing transmitter, 7. digital display voltmeters, 8. speed governing knobs, 9. charging connectors, 10. power switches, 11. motors,
12. speed regulator, 13. rotating shafts.
Embodiment
The utility model is described in further details below in conjunction with the drawings and specific embodiments.
As shown in figure 1, structural representation of the present utility model, a kind of centripetal force teaching platform, it is flat that it includes demonstration
The centripetal force experimental provision 2 of platform 1 and at least two, centripetal force experimental provision 2 described at least two includes turning arm 3, the rotation
Arm 3 includes shaft coupling base 301, bead bracket 302, crossbeam 303 and graduated scale 304, and the shaft coupling base 301 is provided with
Crossbeam 303, the crossbeam 303 is provided with the graduated scale 304, and the bead bracket 302 is led including at least one turning arm
Slot structure 305, bead pallet base 306 and pressure sensor installation pedestal 307, the lower end of bead pallet base 306 are provided with
At least one described turning arm guide barrel construction 305, the turning arm guide barrel construction 305 is sheathed on the crossbeam 303, described small
The side of ball pallet base 306 is provided with pressure sensor installation pedestal 307, and the bead pallet base 306 is provided with bead guide groove
308, the bead guide groove 308 is provided with bead 309, and the pressure sensor installation pedestal 307 is provided with pressure sensor 4,
The side of pressure sensor 4 is provided with anti-jamming signal amplifier 5, and described one end of crossbeam 303 is additionally provided with pressure sensing transmitter
6；
The demo platform 1 is provided with least two digital display voltmeters 7 and at least two speed governing knobs 8, the digital display electricity
Pressure table 7 is electrically connected to the anti-jamming signal amplifier 5, and the side of demo platform 1 is additionally provided with charging connector 9 and power switch
10, at least two motors 11 are additionally provided with the demo platform 1, the motor 11 is provided with speed regulator 12；
The shaft coupling base 301 of centripetal force experimental provision 2 described at least two is located at institute by the rotating shaft 13 of motor 11
State on demo platform 1.
The pressure sensor 4 is semiconductor pressure sensor.The motor 11 is 2, and it is rotating speed 250rpm, turned round
Square 4.3kg cm direct current generator.The digital display voltmeter 7 is 4.The speed governing knob 8 is 2.
During centripetal force teaching demonstration, the power switch 10 of the side of demo platform 1 is opened, in two centripetal force experimental provisions 2
Respective bead bracket 302 bead pallet base 306 on bead guide groove 308 in be respectively put into bead 309, respective
Mobile bead bracket 302, makes bead bracket 302 be locked at the certain position of the graduated scale 304 of crossbeam 303 on crossbeam 303,
Speed governing knob 8 is adjusted, using pressure sensor 4 with reference to suffered by the bead 309 of uniform circular motion is done in the display of digital display voltmeter 7
Centripetal force size, pass through change be arranged on demo platform 1 on two groups of turning arms 3 radius, acceleration and the matter of bead 309
Amount, visually discloses centripetal force F=m ω2Relation between r tri- variables m, ω and r.
The utility model preferred embodiment is these are only, therefore the scope of the utility model implementation can not be limited according to this, i.e.,
The equivalence changes and decoration made according to the utility model description, should all belong in the range of the utility model covering.
Claims (5)
1. a kind of centripetal force teaching platform, it is characterised in that：It includes demo platform（1）With the experiment of at least two centripetal force
Device（2）, centripetal force experimental provision described at least two（2）Including turning arm（3）, the turning arm（3）Including shaft coupling bottom
Seat（301）, bead bracket（302）, crossbeam（303）And graduated scale（304）, the shaft coupling base（301）It is provided with crossbeam
（303）, the crossbeam（303）It is provided with the graduated scale（304）, the bead bracket（302）Including at least one rotation
Arm guide barrel construction（305）, bead pallet base（306）With pressure sensor installation pedestal（307）, the bead pallet base
（306）Lower end is provided with least one described turning arm guide barrel construction（305）, the turning arm guide barrel construction（305）Located at described
Crossbeam（303）On, the bead pallet base（306）Side is provided with pressure sensor installation pedestal（307）, the bead bracket
Pedestal（306）It is provided with bead guide groove（308）, the bead guide groove（308）It is provided with bead（309）, the pressure sensor
Installation pedestal（307）It is provided with pressure sensor（4）, the pressure sensor（4）Side is provided with anti-jamming signal amplifier
（5）, the crossbeam（303）One end is additionally provided with pressure sensing transmitter（6）；
The demo platform（1）It is provided with least two digital display voltmeters（7）With at least two speed governing knobs（8）, the digital display
Voltmeter（7）It is electrically connected to the anti-jamming signal amplifier（5）, the demo platform（1）Side is additionally provided with charging connector（9）
And power switch（10）, the demo platform（1）Inside it is additionally provided with least two motors（11）, the motor（11）It is provided with speed governing
Device（12）；
Centripetal force experimental provision described at least two（2）Shaft coupling base（301）Pass through motor（11）Rotating shaft（13）If
In the demo platform（1）On.
2. centripetal force teaching platform according to claim 1, it is characterised in that：The pressure sensor（4）For half
Conductor pressure sensor.
3. centripetal force teaching platform according to claim 1, it is characterised in that：The motor（11）For 2, and its
For rotating speed 250rpm, moment of torsion 4.3kg cm direct current generator.
4. centripetal force teaching platform according to claim 1, it is characterised in that：The digital display voltmeter（7）For 4
It is individual.
5. centripetal force teaching platform according to claim 1, it is characterised in that：The speed governing knob（8）For 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720037647.0U CN206441420U (en) | 2017-01-13 | 2017-01-13 | A kind of centripetal force teaching platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720037647.0U CN206441420U (en) | 2017-01-13 | 2017-01-13 | A kind of centripetal force teaching platform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206441420U true CN206441420U (en) | 2017-08-25 |
Family
ID=59635816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720037647.0U Expired - Fee Related CN206441420U (en) | 2017-01-13 | 2017-01-13 | A kind of centripetal force teaching platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206441420U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113393739A (en) * | 2021-05-27 | 2021-09-14 | 呼伦贝尔学院 | Physical centrifugal force demonstrator |
-
2017
- 2017-01-13 CN CN201720037647.0U patent/CN206441420U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113393739A (en) * | 2021-05-27 | 2021-09-14 | 呼伦贝尔学院 | Physical centrifugal force demonstrator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170825 Termination date: 20180113 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |