CN202352184U - Demonstrator for forced vibration - Google Patents
Demonstrator for forced vibration Download PDFInfo
- Publication number
- CN202352184U CN202352184U CN2011204533539U CN201120453353U CN202352184U CN 202352184 U CN202352184 U CN 202352184U CN 2011204533539 U CN2011204533539 U CN 2011204533539U CN 201120453353 U CN201120453353 U CN 201120453353U CN 202352184 U CN202352184 U CN 202352184U
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- CN
- China
- Prior art keywords
- cycloid
- gantry support
- fixed
- forced vibration
- pendulum
- 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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- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
The utility model relates to a demonstrator for forced vibration, belonging to the field of physics teaching. All components are connected in the following mode: one end of the cycloid of a simple pendulum is fixed on a gantry support, a bob is hung on the other end of the cycloid, and the bob and the cycloid can slide up and down relatively; the upper end of a frequency calibrated scale is fixed on the gantry support and parallel to the cycloid of the simple pendulum; a smooth rotary shaft is fixed on the cross beam of the gantry support; a soft thin thread penetrates through the smooth rotary shaft, and then one end of the soft thin thread is tied to the upper part of the cycloid, and a spring oscillator is hung on the other end of the soft thin thread; and one end of an amplitude calibrated scale is fixed on the gantry support and keeps parallel to the stretching direction of the spring oscillator. The demonstrator for forced vibration disclosed by the utility model has the following advantage that: an intuitive and quantitative demonstrator for forced vibration is provided for students and the demonstrator is good for a teacher to explain forced vibration and also good for the students to generate perceptual knowledge.
Description
Technical field
The utility model relates to a kind of forced vibration demonstration device, belongs to the physics teaching field.
Background technology
At present, in the existing physics teaching, the student is difficult to understand the relation between forced vibration amplitude and the forced frequency, and does not have demonstration instrument very intuitively in the existing instrument.
Summary of the invention
For the ease of the relation between students understand forced vibration amplitude and the forced frequency, the utility model provides a kind of forced vibration amplitude and frequency demonstration device that intuitively, quantizes.
The purpose of the utility model realizes as follows:
A kind of forced vibration demonstration device is made up of gantry support, single pendulum, smooth rotating shaft, spring oscillator, pendulum, amplitude rule, frequency scale chi, soft fine rule.Each parts connected mode is: cycloid one end of single pendulum is fixed on the gantry support, and other end suspended pendulum can slide up and down between pendulum and the cycloid, and the upper end of frequency scale chi is fixed on the gantry support and is parallel with the cycloid of single pendulum; Smooth rotating shaft is fixed on the crossbeam of gantry support, and soft fine rule passes the top that an end after the smooth rotating shaft ties up to cycloid, other end pendulum spring oscillator, amplitude rule one end be fixed on the gantry support and with the flexible direction keeping parallelism of spring oscillator.
The beneficial effect of the utility model is, to the student a kind of forced vibration demonstration device that intuitively, quantizes is provided, and it had both helped teacher's explanation, also helped the student and produced perceptual knowledge.
Description of drawings:
Accompanying drawing is the structural representation of a kind of forced vibration demonstration device of the utility model.
Embodiment
With reference to accompanying drawing, a kind of forced vibration demonstration device is made up of gantry support (1), single pendulum (2), smooth rotating shaft (3), spring oscillator (4), pendulum (5), amplitude rule (6), frequency scale chi (7), soft fine rule (8).Each parts connected mode is: cycloid one end of single pendulum (2) is fixed on the gantry support (1); Other end suspended pendulum (5); Can slide up and down between pendulum (5) and the cycloid, it is last and parallel with the cycloid of single pendulum (2) that the upper end of frequency scale chi (7) is fixed on gantry support (1); Smooth rotating shaft (3) is fixed on the crossbeam of gantry support (1); Soft fine rule (8) passes the top that smooth rotating shaft (3) back one end ties up to cycloid; Other end pendulum spring oscillator (4), amplitude rule (6) one ends be fixed on that gantry support (1) is gone up and with the flexible direction keeping parallelism of spring oscillator (4).
After each parts connected, spring oscillator (4) remained static, pulling pendulum (5) swing, and the maximum position that spring oscillator (4) can reach is observed in spring oscillator (4) forced vibration that follows suit, and is the amplitude under this driving frequency.Change the upper-lower position revision test of pendulum (5), the good corresponding A of record, F data, described point, line on the A-F coordinate are measured the natural frequency of spring oscillator (4), with image comparison, draw corresponding conclusion.
Claims (1)
1. a forced vibration demonstration device is made up of gantry support (1), single pendulum (2), smooth rotating shaft (3), spring oscillator (4), pendulum (5), amplitude rule (6), frequency scale chi (7), soft fine rule (8); It is characterized in that: cycloid one end of single pendulum (2) is fixed on the gantry support (1); Other end suspended pendulum (5); Can slide up and down between pendulum (5) and the cycloid; The upper end of frequency scale chi (7) is fixed on that gantry support (1) is gone up and is parallel with the cycloid of single pendulum (2), and smooth rotating shaft (3) is fixed on the crossbeam of gantry support (1), and soft fine rule (8) passes the top that smooth rotating shaft (3) back one end ties up to cycloid; Other end pendulum spring oscillator (4), amplitude rule (6) one ends be fixed on that gantry support (1) is gone up and with the flexible direction keeping parallelism of spring oscillator (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204533539U CN202352184U (en) | 2011-11-16 | 2011-11-16 | Demonstrator for forced vibration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204533539U CN202352184U (en) | 2011-11-16 | 2011-11-16 | Demonstrator for forced vibration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202352184U true CN202352184U (en) | 2012-07-25 |
Family
ID=46541170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204533539U Expired - Fee Related CN202352184U (en) | 2011-11-16 | 2011-11-16 | Demonstrator for forced vibration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202352184U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109253061A (en) * | 2018-10-22 | 2019-01-22 | 东北大学 | A kind of single pendulum and single pendulum swing rapid decay method |
-
2011
- 2011-11-16 CN CN2011204533539U patent/CN202352184U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109253061A (en) * | 2018-10-22 | 2019-01-22 | 东北大学 | A kind of single pendulum and single pendulum swing rapid decay method |
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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: 20120725 Termination date: 20121116 |