CN2520537Y - Lever principle teaching experimental apparatus - Google Patents
Lever principle teaching experimental apparatus Download PDFInfo
- Publication number
- CN2520537Y CN2520537Y CN 02202316 CN02202316U CN2520537Y CN 2520537 Y CN2520537 Y CN 2520537Y CN 02202316 CN02202316 CN 02202316 CN 02202316 U CN02202316 U CN 02202316U CN 2520537 Y CN2520537 Y CN 2520537Y
- Authority
- CN
- China
- Prior art keywords
- lever
- scale
- base
- lever principle
- chassis
- 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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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The utility model relates to an experiment apparatus, which comprises a rectangle chassis. The center of the chassis is provided with a column whose upper end is provided with a 'V'-shaped notch, the middle of a lever with scale is supported on the 'V'-shaped notch of the column through a supporting-point, and a hook which can hang poise is arranged at the lower portion of each scale on the lever. The center of the lever is provided with a lever gauge, and manoeuvrable balance female screws are arranged on the two ends of the lever, and imbalance frames are respectively arranged on the two ends of the lever, which are connected with the chassis. With the structure, the number of poises on the two sides of the column and the magnitude of scale are adjusted according to the formula that the power arm is equal to the drag arm, thereby understanding the lever principle, which is direct-viewing and accurate.
Description
The utility model relates to a kind of physics teaching experiment instrument of demonstrating lever principle.Now, the teacher needs hand to take the assembly unit on the classroom of a plurality of teaching aids, demonstration when demonstrating lever principle in the physics teaching, seems cumbersome, and the demonstration effect lacks intuitive.
The purpose of this utility model is exactly cumbersome at demonstration lever principle in the existing physics teaching, as to lack intuitive problem, and a kind of experiment instrument of demonstrating convenient and visual pattern of design.
The purpose of this utility model is to realize like this, this experiment instrument has a rectangle base, the pillar that one upper end band " V " type otch is arranged in the centre of base, be supported on " V " type otch of pillar by a fulcrum in the middle of the lever of one band scale, the hanging hole that can hang counterweight is arranged in the bottom of each scale of lever, the place is provided with the spirit-leveling instrument of a band bubble in the middle of lever, the lever two ends respectively are provided with the balance nut that can transfer, and the lever two ends also respectively are provided with a unbalance support that links with base.
Owing to adopt said structure, when the demonstration lever principle, according to the formula of power power arm=resistance resistance arm, the size of counterweight number and scale (being the arm of force) that can be by the adjustable fixing both sides is got a thorough understanding of the principle of lever, and is intuitively accurate.
Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing
Fig. 1 lever principle teaching experimental synoptic diagram
Among the figure: 1, base 2, pillar 3, " V " type otch 4, lever 5, scale 6, hanging hole 7, fulcrum 8, spirit-leveling instrument 9, bubble 10, counterweight 11, balance nut 12, unbalance support
In Fig. 1:
Show rectangle base (1), the pillar (2) that one upper end band " V " type otch (3) is arranged in the centre of base (1), be supported on " V " type otch (3) of pillar (2) by a fulcrum (7) in the middle of the lever (4) of one band scale (5), the hanging hole (6) that can hang counterweight (10) is arranged in the bottom of each scale of lever (4) (5), the place is provided with the spirit-leveling instrument (8) of a band bubble (9) in the middle of lever (4), lever (4) two ends respectively are provided with the balance nut (11) that can transfer, and lever (4) two ends also respectively are provided with a unbalance support (12) that links with base (1).
Claims (1)
1, a kind of lever principle teaching experimental, it is characterized in that this experiment instrument has a rectangle base, the pillar that one upper end band " V " type otch is arranged in the centre of base, be supported on " V " type otch of pillar by a fulcrum in the middle of the lever of one band scale, the hanging hole that can hang counterweight is arranged in the bottom of each scale of lever, the place is provided with the spirit-leveling instrument of a band bubble in the middle of lever, the lever two ends respectively are provided with the balance nut that can transfer, and the lever two ends also respectively are provided with a unbalance support that links with base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02202316 CN2520537Y (en) | 2002-01-11 | 2002-01-11 | Lever principle teaching experimental apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02202316 CN2520537Y (en) | 2002-01-11 | 2002-01-11 | Lever principle teaching experimental apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2520537Y true CN2520537Y (en) | 2002-11-13 |
Family
ID=33684896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02202316 Expired - Fee Related CN2520537Y (en) | 2002-01-11 | 2002-01-11 | Lever principle teaching experimental apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2520537Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105608964A (en) * | 2016-04-06 | 2016-05-25 | 王星竹 | Simple lever principle demonstration device for physical learning |
| CN111862736A (en) * | 2020-09-09 | 2020-10-30 | 河南四季竹信息科技有限公司 | Lever principle experimental instrument and lever principle experimental instrument teaching data acquisition system |
-
2002
- 2002-01-11 CN CN 02202316 patent/CN2520537Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105608964A (en) * | 2016-04-06 | 2016-05-25 | 王星竹 | Simple lever principle demonstration device for physical learning |
| CN111862736A (en) * | 2020-09-09 | 2020-10-30 | 河南四季竹信息科技有限公司 | Lever principle experimental instrument and lever principle experimental instrument teaching data acquisition system |
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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 |