CN2363334Y - Speed measurer - Google Patents
Speed measurer Download PDFInfo
- Publication number
- CN2363334Y CN2363334Y CN 99230979 CN99230979U CN2363334Y CN 2363334 Y CN2363334 Y CN 2363334Y CN 99230979 CN99230979 CN 99230979 CN 99230979 U CN99230979 U CN 99230979U CN 2363334 Y CN2363334 Y CN 2363334Y
- Authority
- CN
- China
- Prior art keywords
- swash plate
- electromagnet
- timer
- angle
- utility
- 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
Links
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- Measurement Of Unknown Time Intervals (AREA)
Abstract
The utility model relates to a physical teaching instrument, particularly a multipurpose speed measurer. The utility model is composed of a sloping plate, an angle frame, a carriage, an electromagnet, a second timer, etc. A dual-purpose switch controlled electromagnet and a timer are arranged on the second timer. Automatically measuring speed and timing can be achieved by pressing a switch. The utility model has the advantages of no influence of the slide of the trolley by external force, reduction of errors, rapid measuring speed, accurate timing, etc.
Description
The utility model relates to a kind of physics teaching experiment instrument, especially a kind of multi-usage velocity test instrument.
In the existing teaching, by the average velocity tester that swash plate, dolly, baffle plate, stopwatch or clock are formed, exist timing uncertainty, dolly to be subjected to external force to influence movement velocity, bevel angle is difficult for shortcomings such as definite.The inferior counting number acceleration of gravity that check weighing power acceleration adopts single pendulum to swing in 1 minute usually exists time-consumingly, and angle be difficult for to be determined (requirement is 5 °), and timing uncertainty increases defect error.
The purpose of this utility model is to overcome the deficiency of prior art, and a kind of multi-usage velocity test device of fast, accurately measuring average velocity, acceleration of gravity etc. is provided.
Realize above-mentioned purpose, the utility model adopts the velocity test instrument that comprises that seat board, swash plate, angle frame, dolly, electromagnet and manual time-keeping device are formed, electromagnet is connected by lead with the manual time-keeping device, one end of seat board and swash plate can be adjusted 0～90 angle for flexibly connecting, and the swash plate other end is provided with electromagnet, the manual time-keeping device can be placed on diverse location on the swash plate, on the manual time-keeping device two-way switch is set, control electromagnet and timer also indicate scale and show length on the inclined-plane.
Adopt the velocity test instrument of this structure, only need by switch can test the speed automatically, timing, dolly slides and not influenced by external force, reduces error, angle can be regulated on request, has advantages such as fast, the timing standard of testing the speed, and is middle school physics replacement instruments used for education.
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is the utility model one example structure synoptic diagram.
Referring to accompanying drawing 1, the utility model is made up of base plate 1, swash plate 2, angle frame 3, dolly 4, electromagnet 5 and manual time-keeping device 6, and electromagnet is connected by lead with the manual time-keeping device; Near the dress dry cell electromagnet; Base plate 1 and swash plate 2 are connected for hinge 7, and angle frame 3 indicates angle number, middle part and establishes dead slot is adjusted inclined-plane and base plate by itself and screw angle.As to adjust swash plate 2 be 30 ° with base plate 1 angle, and energized is positioned over dolly on the swash plate by electromagnet.Dolly 2 is subjected to the electromagnet effect motionless, and the manual time-keeping tolerance is in swash plate 2 bottoms.Open two-way switch, stopwatch timer timing when dolly leaves electromagnet, dolly glides along the inclined-plane and runs into manual time-keeping device switch, stops timing immediately, just can carry out the calculating of speed.When adjustment inclined-plane 2 is spent for 1 one-tenth 90 with base plate, getting a bead places by electromagnet, open two-way switch, bead falls the switch of running into the manual time-keeping device naturally, finish timing and can calculate acceleration of gravity, adopt the utility model to can be used for the equal speed of lining, instantaneous velocity, acceleration of gravity and the checking law of conservation of mechanical energy in the physics teaching, use very convenient.
Claims (3)
1, a kind of multi-usage velocity test instrument comprises seat board (1), swash plate (2), angle frame (3), dolly (4), it is characterized in that: seat board (1) and swash plate (2) one ends can be adjusted 0～90 ° of angle for flexibly connecting; Swash plate (2) other end fixedly installs electromagnet (5), links to each other with timer (6) by circuit, and manual time-keeping device (6) can be placed on the swash plate diverse location.
2, tester as claimed in claim 1 is characterized in that: the manual time-keeping device is provided with two-way switch on (6), control electromagnet and timer switch.
3, tester as claimed in claim 1 is characterized in that: angle frame (3) indicates angle and is provided with bracing or strutting arrangement and can support swash plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99230979 CN2363334Y (en) | 1999-02-08 | 1999-02-08 | Speed measurer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99230979 CN2363334Y (en) | 1999-02-08 | 1999-02-08 | Speed measurer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2363334Y true CN2363334Y (en) | 2000-02-09 |
Family
ID=34019928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99230979 Expired - Fee Related CN2363334Y (en) | 1999-02-08 | 1999-02-08 | Speed measurer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2363334Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103985295A (en) * | 2012-12-03 | 2014-08-13 | 曾飞 | Time compensating method for photoelectric timer |
| CN106898202A (en) * | 2017-04-24 | 2017-06-27 | 王国锋 | Integrate the experimental bench of physics teaching and Students ' Learning |
| CN108053730A (en) * | 2018-02-09 | 2018-05-18 | 亓迪 | A kind of high school physics speed experiments simulator |
-
1999
- 1999-02-08 CN CN 99230979 patent/CN2363334Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103985295A (en) * | 2012-12-03 | 2014-08-13 | 曾飞 | Time compensating method for photoelectric timer |
| CN106898202A (en) * | 2017-04-24 | 2017-06-27 | 王国锋 | Integrate the experimental bench of physics teaching and Students ' Learning |
| CN106898202B (en) * | 2017-04-24 | 2019-07-05 | 温州翔达教仪有限公司 | Integrate the experimental bench of physics teaching and student's study |
| CN108053730A (en) * | 2018-02-09 | 2018-05-18 | 亓迪 | A kind of high school physics speed experiments simulator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |