CN201655098U - Multi-purpose lever demonstration teaching appliance - Google Patents
Multi-purpose lever demonstration teaching appliance Download PDFInfo
- Publication number
- CN201655098U CN201655098U CN2010201045577U CN201020104557U CN201655098U CN 201655098 U CN201655098 U CN 201655098U CN 2010201045577 U CN2010201045577 U CN 2010201045577U CN 201020104557 U CN201020104557 U CN 201020104557U CN 201655098 U CN201655098 U CN 201655098U
- Authority
- CN
- China
- Prior art keywords
- lever
- bar
- round bar
- cross bar
- demonstration teaching
- 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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Abstract
The utility model relates to a multi-purpose lever demonstration teaching appliance which is characterized by comprising a transverse bar (1) with scales, wherein the upper side of the transverse bar (1) is movably connected with a hook (2); a round bar (3) parallel to the transverse bar (1) is arranged below the transverse bar (1); two ends of the round bar (3) and the transverse bar (1) are respectively fixedly connected with each other; the round bar (3) is provided with two hooks (4, 5) that can move along the length direction of the round bar (3). In the utility model, the multi-purpose lever demonstration teaching appliance is a multi-purpose lever which is formed by improving the traditional lever teaching appliance, can demonstrate the lever principle, using principle of steelyard and balance principle according to the requirement, and can be used flexibly and conveniently.
Description
Technical field
The utility model relates to a kind of lever demonstration teaching aid, belongs to physics teaching apparatus field.
Background technology
When in physics teaching, demonstrating lever principle, the teacher uses traditional lever teaching aid usually, this teaching aid all is made up of support and lever, need the teacher to prepare various equipment in addition and on the classroom, carry out the assembly unit demonstration, not only presentation process bothers, wastes time and energy, and demonstration effect shortage intuitive, it is all in tumble also can to seem on the table of teaching.
The utility model content
The purpose of this utility model provides a kind of multi-usage lever demonstration teaching aid, to overcome above-mentioned the deficiencies in the prior art.
The technical solution of the utility model is: a kind of multi-usage lever demonstration teaching aid, it is characterized in that, comprise the cross bar (1) that has scale, the upside of cross bar (1) is connected with hook (2), the below of cross bar (1) is provided with the round bar (3) parallel with cross bar (1), round bar (3) is fixedlyed connected respectively with the two ends of cross bar (1), and round bar (3) is provided with two hooks (4,5) that can move along round bar (3) length direction.
Preferably, the two ends of described round bar (3) are respectively equipped with adjustment nut (6).
Multi-usage lever demonstration teaching aid of the present utility model is to improve a kind of multi-usage lever that forms on the basis of traditional lever teaching aid, can demonstrate the use principle of lever principle, steelyard and the principle of balance as required.Compared with prior art, the utility model also has following beneficial effect:
1) made hook into adjustable type, can move as required or fixing, flexible and convenient to use.
2) the adjustment nut is hidden in the cross bar below, the student is more secure when used.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Among the figure: 1 has the cross bar of scale; 2 hooks; 3 round bars; 4,5 hooks; 6 adjustment nuts.
Embodiment
Further set forth the utility model below in conjunction with specific embodiment, should be understood that these embodiment only be used to the utility model is described and be not used in the restriction protection domain of the present utility model.
As shown in Figure 1, multi-usage lever demonstration teaching aid of the present utility model, it is characterized in that, comprise the cross bar 1 that has scale, the upside of cross bar 1 is connected with hook 2, the below of cross bar 1 is provided with the round bar 3 parallel with cross bar 1, and round bar 3 is fixedlyed connected respectively with the two ends of cross bar 1, and round bar 3 is provided with two hooks 4,5 that can move along round bar 3 length directions.
The two ends of described round bar 3 are respectively equipped with adjustment nut 6.
During the demonstration lever principle: will link up with 2 and hang on the fixed object (as iron stand), make hook 4,5 lay respectively at hook 2 both sides, by on hook 4,5, increasing the hook sign indicating number, and the position of mobile or fixed hook 2,4 and 5, demonstrate relation and change procedure thereof between position of the fulcrum, power and the arm of force.
When demonstrating the principle of steelyard: will link up with 2 and hang on the fixed object (as iron stand), and make hook 2 be positioned at the left end of cross bar 1, and simulate the arm beam of steelyard with cross bar 1; Move hook 4 left ends, and hang up a scale pan to round bar 3; Hook sign indicating number on the hook 5, the simulation sliding weight of steelyard.Allow the making and the use of the students experience arm beam of steelyard.
During the principle of demonstration balance: will link up with 2 and hang on the fixed object (as iron stand), make hook 2 be positioned at the centre of cross bar 1, make hook 4,5 be positioned at the two ends of round bar and, on hook 4,5, hang up a pallet respectively, form simple and easy balance and demonstrate with respect to cross bar centre position symmetry.
Claims (2)
1. multi-usage lever demonstration teaching aid, it is characterized in that, comprise the cross bar (1) that has scale, the upside of cross bar (1) is connected with hook (2), the below of cross bar (1) is provided with the round bar (3) parallel with cross bar (1), round bar (3) is fixedlyed connected respectively with the two ends of cross bar (1), and round bar (3) is provided with two hooks (4,5) that can move along round bar (3) length direction.
2. multi-usage lever demonstration teaching aid as claimed in claim 1 is characterized in that the two ends of described round bar (3) are respectively equipped with adjustment nut (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201045577U CN201655098U (en) | 2010-01-29 | 2010-01-29 | Multi-purpose lever demonstration teaching appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201045577U CN201655098U (en) | 2010-01-29 | 2010-01-29 | Multi-purpose lever demonstration teaching appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201655098U true CN201655098U (en) | 2010-11-24 |
Family
ID=43120343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201045577U Expired - Fee Related CN201655098U (en) | 2010-01-29 | 2010-01-29 | Multi-purpose lever demonstration teaching appliance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201655098U (en) |
-
2010
- 2010-01-29 CN CN2010201045577U patent/CN201655098U/en not_active Expired - Fee Related
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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: 20101124 Termination date: 20110129 |