CN101236707B - Active and static friction force demonstration instrument for plane and inclined slope - Google Patents
Active and static friction force demonstration instrument for plane and inclined slope Download PDFInfo
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- CN101236707B CN101236707B CN2008100204889A CN200810020488A CN101236707B CN 101236707 B CN101236707 B CN 101236707B CN 2008100204889 A CN2008100204889 A CN 2008100204889A CN 200810020488 A CN200810020488 A CN 200810020488A CN 101236707 B CN101236707 B CN 101236707B
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- panel
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- base plate
- friction
- plane
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Abstract
The invention relates to a kinetic force of friction and breakout friction on a plane and a slope demonstration instrument, belonging to the physics teaching demonstration instrument field. The invention is characterized in that one end of a panel and one end of a soleplate are connected with each other by a rotational connection shaft of the panel and the soleplate, the other end of the panel and the other end of the soleplate are connected with each other by a highly regulating shaft connection rod, a spring tensometer retaining plate is vertically connected with the panel, two spring tensometers are fixed on the spring tensometer retaining plate horizontally and parallel. By adopting the technical proposal, the demonstration instrument has the advantages that the factors which are related to the kinetic force of friction and the breakout friction on the plane and the slope can be demonstrated, the relation of the maximum kinetic force of friction and the force of sliding friction can be demonstrated, the directions of the kinetic force of friction and the breakout friction on the plane and the slope can be demonstrated, the relation of the friction and the size of speed can be demonstrated; the structure is simple and the operation of demonstration is convenient.
Description
Affiliated technical field
The present invention relates to a kind of plane, the dynamic and static friction force demonstration instrument in slope, belong to physics teaching demonstration instrument field.
Background technology
At present, in physics teaching, the student is relevant with those factors to dynamic and static friction force in plane and slope, the relation of maximum static friction force and force of sliding friction how, the direction of dynamic and static friction force how in plane and the slope, follows the relation of velocity magnitude etc., often do not understand, traditional friction force demonstration instrument can not quantitatively, intuitively, dynamically be demonstrated the size and Orientation of dynamic and static friction force in plane and the slope, to students system, understand friction force all sidedly and make troubles.
Summary of the invention
The purpose of this invention is to provide a kind of plane, the dynamic and static friction force demonstration instrument in slope, can quantitatively, intuitively, dynamically demonstrate the size and Orientation of dynamic and static friction force in plane and the slope.
The object of the present invention is achieved like this: by transformer, rectification circuit, electric capacity, three terminal regulator 7812, switch, speed adjusting resistance, direct current generator, panel, friction block, control panel, the speed adjusting resistance knob, velometer, main rotary shaft, travelling belt, pulley, the spring tension meter, spring tension meter fixed head, bearing, height regulating shaft knob, base plate, globule horizontal glass bubble, panel and the base plate axle that is rotatably connected, from rotation axis, height regulating shaft connecting link, the height regulating shaft is formed, 220V alternating current input end links to each other with rectification circuit by transformer, rectification circuit output end and electric capacity parallel connection, rectification circuit output end connects three terminal regulator 7812 input ends, switch, be connected on three terminal regulator 7812 output terminals after speed adjusting resistance and the direct current generator series connection, the circuit elements device is fixed on the control panel, control panel vertically links to each other with panel, the speed adjusting resistance knob links to each other with speed adjusting resistance, direct current generator links to each other with main rotary shaft, main rotary shaft and from each personal bearing fixing of rotation axis two ends on panel, travelling belt is enclosed within main rotary shaft and between the rotation axis, globule horizontal glass bubble is placed on the base plate, the below of base plate is fixed with the base plate pin, two spring tension meters and two friction blocks link to each other with backguy by pulley between separately, it is characterized in that: an end of panel and an end of base plate by panel and base plate be rotatably connected the axle link to each other, the other end of panel links to each other by height regulating shaft connecting link with the other end of base plate, spring tension meter fixed head vertically links to each other with panel, and two spring tension meter horizontal parallel are fixed on the spring tension meter fixed head.Direct current generator low-speed DC motor, nominal voltage are 12V.
Owing to adopt technique scheme, the advantage that the present invention had with good effect is: it is relevant with those factors to demonstrate in plane and slope dynamic and static friction force, the relation of maximum static friction force and force of sliding friction how, the direction of dynamic and static friction force how in plane and the slope, follow the relation of velocity magnitude etc., simple in structure, the operation demonstration is convenient.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is circuit theory diagrams of the present invention.
Fig. 2 is an one-piece construction synoptic diagram of the present invention.
Fig. 3 is the I-I cutaway view Amplified image of Fig. 2.
A.220V alternating current input T. transformer B. rectification circuit C. capacitor I among the figure. three terminal regulator 7812 K. switch R. speed adjusting resistance M. direct current generators 1. panels 2. brake pads 3. control panels 5. speed adjusting resistance knobs 6. speedometers 7. brake pads 8. main rotary shafts 9. conveyer belts 10. backguys 11. pulleys 12. spring tension meters 13. spring tension meters 14. spring tension meter fixed heads 15. pulleys 16. pulleys 17. bearings 18. height regulating shaft knobs 19. base plates 20. globule horizontal glass steep 21. base plate pin, 22. panels and base plate is rotatably connected axle 23. bearings 24. from turning cylinder 25. height regulating shaft connecting rods 26. height regulating shafts
Embodiment
In Fig. 1,220V alternating current input end (A) links to each other with rectification circuit (B) by transformer (T), rectification circuit (B) output terminal and electric capacity (C) parallel connection, rectification circuit (B) output termination three terminal regulator 7812 (I) input end is connected on three terminal regulator 7812 (I) output terminal after switch (K), speed adjusting resistance (R) and direct current generator (M) series connection.
In Fig. 2, circuit elements device among Fig. 1 is fixed on the control panel (3), control panel (3) vertically links to each other with panel (1), speed adjusting resistance knob (5) links to each other with speed adjusting resistance (R), direct current generator (M) links to each other with main rotary shaft (8), main rotary shaft (8) and from each personal bearing (17 of rotation axis (24) two ends, 23) be fixed on the panel (1), travelling belt (9) is enclosed within main rotary shaft (8) and between the rotation axis (24), globule horizontal glass bubble (20) is placed on the base plate (19), the below of base plate (19) is fixed with base plate pin (21), two spring tension meters (12,13) and two friction blocks (2,7) separately between by pulley (11,15,16) link to each other with backguy (10), one end of one end of panel (1) and base plate (19) by panel and base plate be rotatably connected the axle (22) link to each other, the other end of the other end of panel (1) and base plate (19) links to each other by height regulating shaft connecting link (25), spring tension meter fixed head (14) vertically links to each other with panel (1), two spring tension meters (12,13) horizontal parallel is fixed on the spring tension meter fixed head (14).
In Fig. 3, logical height regulating shaft connecting link (25) links to each other between panel (1) and the base plate (19), is equipped with height regulating shaft (26) in the middle of the height regulating shaft connecting link (25), and height regulating shaft (26) links to each other with height regulating shaft knob (18).
Claims (2)
1. plane, the slope is moving, the stiction demonstrator, 220V alternating current input end (A) links to each other with rectification circuit (B) by transformer (T), rectification circuit (B) output terminal and electric capacity (C) parallel connection, rectification circuit (B) output termination three terminal regulator 7812 (I) input end, switch (K), be connected on three terminal regulator 7812 (I) output terminal after speed adjusting resistance (R) and direct current generator (M) series connection, the circuit elements device is fixed on the control panel (3), control panel (3) vertically links to each other with panel (1), speed adjusting resistance knob (5) links to each other with speed adjusting resistance (R), direct current generator (M) links to each other with main rotary shaft (8), main rotary shaft (8) and from each personal bearing (17 of rotation axis (24) two ends, 23) be fixed on the panel (1), travelling belt (9) is enclosed within main rotary shaft (8) and between the rotation axis (24), globule horizontal glass bubble (20) is placed on the base plate (19), the below of base plate (19) is fixed with base plate pin (21), two spring tension meters (12,13) and two friction blocks (2,7) separately between by pulley (11,15,16) link to each other with backguy (10), it is characterized in that: an end of an end of panel (1) and base plate (19) by panel and base plate be rotatably connected the axle (22) link to each other, the other end of the other end of panel (1) and base plate (19) links to each other by height regulating shaft connecting link (25), be equipped with height regulating shaft (26) in the middle of the height regulating shaft connecting link (25), height regulating shaft (26) links to each other with height regulating shaft knob (18), spring tension meter fixed head (14) vertically links to each other with panel (1), two spring tension meters (12,13) horizontal parallel is fixed on the spring tension meter fixed head (14).
2. a kind of plane according to claim 1, the dynamic and static friction force demonstration instrument in slope is characterized in that: direct current generator low-speed DC motor, nominal voltage are 12V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100204889A CN101236707B (en) | 2008-03-10 | 2008-03-10 | Active and static friction force demonstration instrument for plane and inclined slope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100204889A CN101236707B (en) | 2008-03-10 | 2008-03-10 | Active and static friction force demonstration instrument for plane and inclined slope |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101236707A CN101236707A (en) | 2008-08-06 |
| CN101236707B true CN101236707B (en) | 2010-06-02 |
Family
ID=39920294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100204889A Expired - Fee Related CN101236707B (en) | 2008-03-10 | 2008-03-10 | Active and static friction force demonstration instrument for plane and inclined slope |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101236707B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104680913B (en) * | 2015-03-25 | 2017-05-24 | 江西理工大学 | Experimental system for simulating raining-caused landslide |
| CN106546532A (en) * | 2016-12-08 | 2017-03-29 | 辽宁石油化工大学 | A kind of novel friction factor detection device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4068394A (en) * | 1977-04-08 | 1978-01-17 | Dayco Corporation | V-belt demonstrator device |
| CN87204227U (en) * | 1987-05-16 | 1988-04-06 | 文求林 | Multipurpose mechanics experimental instrument |
| CN2181052Y (en) * | 1992-12-31 | 1994-10-26 | 天津市第三中学 | Demonstration defvice for static frinction force |
| EP0625772A1 (en) * | 1993-05-10 | 1994-11-23 | San Yu Huang | Transmission and reading guide rapid return device for an auxiliary reading apparatus |
| CN1547176A (en) * | 2003-12-11 | 2004-11-17 | 彤 李 | Static and kinetic friction demonstrator |
| CN2775775Y (en) * | 2005-01-28 | 2006-04-26 | 杜丽娟 | Friction test teaching demonstration instrument |
| CN2911837Y (en) * | 2006-05-26 | 2007-06-13 | 王梅泉 | Friction force demonstrator |
-
2008
- 2008-03-10 CN CN2008100204889A patent/CN101236707B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4068394A (en) * | 1977-04-08 | 1978-01-17 | Dayco Corporation | V-belt demonstrator device |
| CN87204227U (en) * | 1987-05-16 | 1988-04-06 | 文求林 | Multipurpose mechanics experimental instrument |
| CN2181052Y (en) * | 1992-12-31 | 1994-10-26 | 天津市第三中学 | Demonstration defvice for static frinction force |
| EP0625772A1 (en) * | 1993-05-10 | 1994-11-23 | San Yu Huang | Transmission and reading guide rapid return device for an auxiliary reading apparatus |
| CN1547176A (en) * | 2003-12-11 | 2004-11-17 | 彤 李 | Static and kinetic friction demonstrator |
| CN2775775Y (en) * | 2005-01-28 | 2006-04-26 | 杜丽娟 | Friction test teaching demonstration instrument |
| CN2911837Y (en) * | 2006-05-26 | 2007-06-13 | 王梅泉 | Friction force demonstrator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101236707A (en) | 2008-08-06 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100602 Termination date: 20140310 |