CN2181052Y - Demonstration defvice for static frinction force - Google Patents
Demonstration defvice for static frinction force Download PDFInfo
- Publication number
- CN2181052Y CN2181052Y CN 92240531 CN92240531U CN2181052Y CN 2181052 Y CN2181052 Y CN 2181052Y CN 92240531 CN92240531 CN 92240531 CN 92240531 U CN92240531 U CN 92240531U CN 2181052 Y CN2181052 Y CN 2181052Y
- Authority
- CN
- China
- Prior art keywords
- hollow
- pilot lamp
- rotating disk
- slide rail
- 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
Abstract
The utility model relates to a dedicated instrument for teaching. The utility model is characterized in that the utility model is composed of a hollow rotating disc, a bent lath and a hollow bracket; the hollow rotating disc is provided with a conical shaft and a power supply, and the bent lath is provided with a sliding rail. An upper indicating lamp, a lower indicating lamp and a slide block with holes are installed on the sliding rail of the bent lath. When used, the utility model is installed on a general-purpose turntable, the rotating disc rotates so that the slide block moves upwards and downwards, and the direction of the static friction force is indicated by the indicating lamps.
Description
The utility model relates to a kind of teaching instrumentation.Stiction direction apparatus for demonstrating is by the hollow rotating disk that has power supply and diminished shaft and have hollow stent, slide block with holes, and the bending batten of pilot lamp and telegraph key, slide rail is formed.
At present, in senior middle school physics teaching, can't directly observe having or not and direction of stiction, thereby become teaching difficulty.The purpose of this utility model is to solve the deficiencies in the prior art, providing a kind of by photoelectric display can make the student directly observe having or not of stiction and direction thereof, and prove that it is relevant with rotating speed, thereby solve teaching difficulty, the stiction direction apparatus for demonstrating of improving the quality of teaching.
The purpose of this utility model can reach by following measure: stiction direction apparatus for demonstrating as shown in Figure 1:
Be fixed on the bending batten (5) and the surperficial pitch angle at 45 of rotating disk (3) of the band slide rail (4) on the hollow rotating disk (3) that has diminished shaft (2) by screw (1).The top of bending batten (5) is supported by the support (6) of hollow, and support (6) is fixed on the rotating disk by screw (23) and corner bracket (24), and screw (7) is fixed on lug plate with holes (22) and bending batten (5) at the top of support (6).Pilot lamp (8) is fixed on the lower end of slide rail (4), pilot lamp (9) is fixed on the upper end of slide rail (4), slide block with holes (10) is equipped with at the middle part of slide rail (4), the Kong Zhongyin of slide block (10) is equipped with single-pole double-throw (SPDT) telegraph key (11), (12), at middle part, slide rail (10) back side wooden unit (13) is housed, telegraph key leader (14), (15) are fixed on the wooden unit (13).Pilot lamp (8) is connected with telegraph key leader (14) by lead (16), pilot lamp (9) is connected with telegraph key leader (15) by lead (17), single-pole double-throw (SPDT) power supply (18) is fixed on the back side of hollow rotating disk (3) with screw (19), lead (19) connects the lug plate (22) at power supply (18) and hollow stent (6) top, lead (20) connects power supply (18) and pilot lamp (9), and lead (21) links power supply (18) and pilot lamp (8).
Do the time spent, the diminished shaft (2) at hollow rotating disk (3) back is inserted the general-purpose turntable, rotate general-purpose turntable handle, the rotating disk of hollow (3) rotates thereupon, when rotating disk (3) rotational angular velocity of hollow equals critical angular velocity (W
0=
) time, slide block with holes (10) transfixion, pilot lamp (8) (9) does not work, and illustrating does not have stiction this moment; When central idle running dish (3) rotational angular velocity surpassed critical angular velocity, slide block with holes (10) prolonged slide rail (4) and upwards slides, and telegraph key (11) is connected in slide block (10) hole, and pilot lamp (8) is bright, showed that stiction is downward at this moment; In the middle of the rotational angular velocity of idle running dish (3) during less than critical angular velocity, slide block with holes (11) prolongs slide rail (4) to lower slider, slider bore is connected by telegraph key (12), pilot lamp (9) is bright, show this moment stiction upwards.
Stiction direction apparatus for demonstrating material of the present utility model can be selected for use:
Make for metal material (1) (2) (3) (4) (5) (6) (7) (10) (11) (12) (14) (15) (22) (23) (24) among Fig. 1.
(13) make for wooden materials.
(19) (20) (21) (16) (17) are general lead.
(18) be No. 2 batteries.
The utility model compared with prior art has and can reflect the direction of stiction exactly and have or not, simple in structure, manufacturing, use, easy to carry, characteristics such as cost is low.
Claims (1)
1, a kind of stiction direction apparatus for demonstrating, it is characterized in that it being the hollow rotating disk (3) that has power supply (18) and diminished shaft (2) by the back side, bending batten (5) and hollow stent (6) constitute, bending batten (5) and the surperficial angle at 45 of hollow rotating disk (3), the one end is fixed on the hollow rotating disk (3) by screw (1), the other end is supported by hollow stent (6), hollow stent (6) is vertically fixed on the rotating disk (3), lug plate (22) is equipped with on support (6) top, bending batten (5) is provided with slide rail (4), be equipped with narrow meshed on the slide rail (4), slide block (10) can slide up and down, single-pole double-throw (SPDT) telegraph key (11), (12) latent being contained in the aperture of slide block (10), hollow wooden unit (13) is equipped with at the middle part, the back side of slide rail (4), telegraph key leader (14) is housed on the wooden unit (13), (15), pilot lamp (8) is equipped with in the lower end of slide rail (4), link by lead (16) and telegraph key leader (14), pilot lamp (9) is equipped with in the upper end, link by lead (17) and telegraph key leader (15), power supply (18) is respectively by lead (19), (20), (21) with lug plate (22), pilot lamp (9), pilot lamp (8) links.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92240531 CN2181052Y (en) | 1992-12-31 | 1992-12-31 | Demonstration defvice for static frinction force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92240531 CN2181052Y (en) | 1992-12-31 | 1992-12-31 | Demonstration defvice for static frinction force |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2181052Y true CN2181052Y (en) | 1994-10-26 |
Family
ID=33780867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92240531 Expired - Fee Related CN2181052Y (en) | 1992-12-31 | 1992-12-31 | Demonstration defvice for static frinction force |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2181052Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101236707B (en) * | 2008-03-10 | 2010-06-02 | 南京化工职业技术学院 | Active and static friction force demonstration instrument for plane and inclined slope |
| CN104064079A (en) * | 2014-07-18 | 2014-09-24 | 李钦琦 | Friction self-locking principle teaching test device and test method thereof |
| CN104112391A (en) * | 2014-08-06 | 2014-10-22 | 陶顺 | Building structural mechanics photoelectric demonstration system |
| CN104794963A (en) * | 2015-05-12 | 2015-07-22 | 黄亿蓂 | Experimental facility capable of visually displaying direction of friction force |
-
1992
- 1992-12-31 CN CN 92240531 patent/CN2181052Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101236707B (en) * | 2008-03-10 | 2010-06-02 | 南京化工职业技术学院 | Active and static friction force demonstration instrument for plane and inclined slope |
| CN104064079A (en) * | 2014-07-18 | 2014-09-24 | 李钦琦 | Friction self-locking principle teaching test device and test method thereof |
| CN104064079B (en) * | 2014-07-18 | 2016-03-02 | 李钦琦 | Friction self-locking theory teaching test unit and test method thereof |
| CN104112391A (en) * | 2014-08-06 | 2014-10-22 | 陶顺 | Building structural mechanics photoelectric demonstration system |
| CN104112391B (en) * | 2014-08-06 | 2016-08-17 | 陶顺 | Fabric structure mechanics photoelectricity demo system |
| CN104794963A (en) * | 2015-05-12 | 2015-07-22 | 黄亿蓂 | Experimental facility capable of visually displaying direction of friction force |
| CN104794963B (en) * | 2015-05-12 | 2015-11-18 | 黄亿蓂 | A kind of experimental provision that intuitively can show direction |
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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 |