CN2775775Y - Friction test teaching demonstration instrument - Google Patents
Friction test teaching demonstration instrument Download PDFInfo
- Publication number
- CN2775775Y CN2775775Y CN 200520080387 CN200520080387U CN2775775Y CN 2775775 Y CN2775775 Y CN 2775775Y CN 200520080387 CN200520080387 CN 200520080387 CN 200520080387 U CN200520080387 U CN 200520080387U CN 2775775 Y CN2775775 Y CN 2775775Y
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- fixed
- slide
- spring balance
- conveyor belt
- slide block
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Abstract
The utility model discloses a friction test teaching demonstration instrument, which is composed of a fixing frame 1, a spring balance 2, a drawing wire 3 and a slide block 4, wherein the left end of the drawing wire 3 is fixed on the spring balance 2, the right end of the drawing wire 3 is fixed on the slide block 4, the left end of the fixing support 1 is fixed with a spring balance sliding mechanism 5, the right end of the fixing frame 1 is fixed with a uniform speed rotary mechanism 6 and the spring balance 2 is fixed on a slide board of the spring balance sliding mechanism 5. The slide block is arranged on an annular conveying band of the uniform speed rotary mechanism 6. The friction test teaching demonstration instrument can once accomplish various demonstrations. Moreover, the utility model has the advantages of accurate number reading, stable tests, convenient operation, labor saving, time saving and obvious contrast effects. The utility model can objectively show the correlation factors of sliding friction force or rolling friction force and exactly test the value of sliding friction force and rolling friction force. The learning interest of students and the teaching quality of teachers can be raised.
Description
Technical field
The utility model relates to a kind of improvement of physics teaching utensil, specifically a kind of frictional experiment demonstration instrument for teaching.
Background technology
In the junior physics textbook, the size experiment relevant with which factor of a research force of sliding friction arranged, mainly be flatly to haul wood particle uniform motion on a plank with constant weight with spring balance, read the reading on the spring balance again, thereby the friction force of calculating, gravity, with the relation value of friction factor, though this method simply is easy to do, but have the following disadvantages: 1, use hand spring scale, the pulling force inequality, cause the wood particle movement velocity sometimes fast and sometimes slow, the motion that can not remain a constant speed, and plank is shorter; 2, because spring balance is kept in motion, be difficult for reading numerical values; 3, need repeat repeatedly to test, the each error of experimental result is bigger; 4, because apparatus is more single, can't oppose than test; 5, the weight that changes wood particle need be changed wood particle, inconvenient operation.
Summary of the invention
The purpose of this utility model is to overcome the deficiency of existing frictional experiment utensil, provide that a kind of experiment is stable, accuracy of reading, simple to operation, contrast effect is obvious, can fully disclose the correlative factor that influences force of sliding friction, accurately measure a kind of frictional experiment demonstration instrument for teaching of the size of force of sliding friction and force of rolling friction.
For reaching above purpose, the technical scheme that the utility model adopted is: this frictional experiment demonstration instrument for teaching, constitute by fixed mount, spring balance, backguy, slide block, the left end of backguy is fixed on the spring balance, the right-hand member of backguy is fixed on the slide block, it is characterized in that in the fixing upper spring scale slide mechanism of the left end of fixed mount, uniform rotation mechanism on the right-hand member of fixed mount is fixing, spring balance is fixed on the slide plate of spring balance slide mechanism, and slide block is placed on the endless conveyor belt of uniform rotation mechanism.The utility model is also implemented by following measure: described spring balance slide mechanism, constitute by slide rail, slide plate, slide rail is fixed on the top left end of fixed mount, and parallelly be provided with two, sliding mouthful of the slide plate bottom surface is stuck on two slide rails, makes the slide plate can be along two forward and backward slips of slide rail, spring balance be fixed on slide plate above, so that spring balance moves in company with one on slide plate, on slide plate, be carved with the indicating graduation of spring balance; Described uniform rotation mechanism, by the supporting plane plate, slowspeed machine, endless conveyor belt, driving shaft, driven axle constitutes, the supporting plane plate is located at the upper right of fixed mount, the two ends of driven axle and driving shaft are fixed on the both sides of supporting plane plate respectively with axle sleeve, and can rotate in the corresponding axle sleeve separately respectively, slowspeed machine is fixed on the fixed mount of driveshaft end, and be connected with battery case on the supporting plane plate by lead, gear on the slowspeed machine and driveshaft end gearing mesh, when slowspeed machine starts, can be by the transmission of gear, make drive shaft turns, sheathed endless conveyor belt between driven axle and driving shaft, the supporting plane plate is inserted in the bottom surface on endless conveyor belt upper strata, so that when drive shaft turns, endless conveyor belt is rotated, because the upper strata of supporting plane plate pop-up endless conveyor belt, thereby the upper strata that makes endless conveyor belt remains a plane, the parallel side-friction face of establishing three wide different materials on endless conveyor belt, can be respectively by silk, nonwoven fabrics, alum cloth is made, so that three kinds of different friction factor to be provided; The bottom surface of slide block is the plane, is provided with four scroll wheels above, and the middle part is provided with the load-carrying hole, regulates counterweight and puts into the load-carrying hole.During use, start slowspeed machine, endless conveyor belt is made uniform motion, along the slide rail moving slide board, be on the different side-friction face of endless belt again, counterweight is put into the load-carrying hole with adjusting slider, the weight of scalable slide block with the slide block upset, can be tested rolling friction.
The beneficial effects of the utility model are: compared with prior art, can once finish multiple demonstration, and accuracy of reading, experiment is stable, easy to operate, time saving and energy saving, contrast effect is obvious, can disclose the correlative factor that influences force of sliding friction or force of rolling friction objectively, accurately measure the size of force of sliding friction and force of rolling friction, can improve students'interest in learning and teacher's quality of instruction.
Description of drawings
Fig. 1 looks synoptic diagram for the utility model structure master.
Fig. 2 is the utility model structure schematic top plan view.
Fig. 3 is that the utility model is along Fig. 2 A-A section cross-sectional schematic.
Embodiment
Make the utility model with reference to accompanying drawing 1,2,3.This frictional experiment demonstration instrument for teaching, constitute by fixed mount 1, spring balance 2, backguy 3, slide block 4, the left end of backguy 3 is fixed on the spring balance 2, the right-hand member of backguy 3 is fixed on the slide block 4, at the fixing upper spring scale slide mechanism 5 of the left end of fixed mount 1, uniform rotation mechanism 6 on the right-hand member of fixed mount 1 is fixing, spring balance 2 is fixed on the slide plate of spring balance slide mechanism 5, and slide block 4 is placed on the endless conveyor belt of uniform rotation mechanism 6.Described spring balance slide mechanism 5, constitute by slide rail 51, slide plate 52, slide rail 51 is fixed on the top left end of fixed mount 1, and parallelly be provided with two, sliding mouthful of slide plate 52 bottom surfaces is stuck on two slide rails 51, make the slide plate 52 can be along the 51 forward and backward slips of two slide rails, spring balance 2 be fixed on slide plate 52 above, on slide plate 52, be carved with the indicating graduation 53 of spring balance; Described uniform rotation mechanism 6, by supporting plane plate 61, slowspeed machine 62, endless conveyor belt 63, driving shaft 64, driven axle 65 constitutes, supporting plane plate 61 is located at the upper right of fixed mount 1, the two ends of driven axle 65 and driving shaft 64 are fixed on the both sides of supporting plane plate 61 respectively with axle sleeve, and can rotate in the corresponding axle sleeve separately respectively, slowspeed machine 62 is fixed on the fixed mount 1 of driving shaft 64 ends, and be connected with battery case 67 on the supporting plane plate 61 by lead 66, gear on the slowspeed machine 62 and the engagement of driving shaft 64 end gear, sheathed endless conveyor belt 63 between driven axle 65 and driving shaft 64, supporting plane plate 61 is inserted in the bottom surface on endless conveyor belt 63 upper stratas, so that when driving shaft 64 rotates, endless conveyor belt 63 is rotated, because the upper strata of supporting plane plate 61 pop-up endless conveyor belts 63, thereby the upper strata that makes endless conveyor belt 63 remains a plane, the parallel side-friction face of establishing three wide different materials on endless conveyor belt 63 can be respectively by silk, nonwoven fabrics, alum cloth is made; The bottom surface of slide block 4 is the plane, is provided with four scroll wheels 41 above, and the middle part is provided with load-carrying hole 42, regulates counterweight and puts into load-carrying hole 42.
Claims (4)
1, a kind of frictional experiment demonstration instrument for teaching, constitute by fixed mount (1), spring balance (2), backguy (3), slide block (4), the left end of backguy (3) is fixed on the spring balance (2), the right-hand member of backguy (3) is fixed on the slide block (4), it is characterized in that at the fixing upper spring scale slide mechanism (5) of the left end of fixed mount (1), in the fixing uniform rotation mechanism (6) of going up of the right-hand member of fixed mount (1), spring balance (2) is fixed on the slide plate of spring balance slide mechanism (5), and slide block (4) is placed on the endless conveyor belt of uniform rotation mechanism (6).
2, frictional experiment demonstration instrument for teaching according to claim 1, it is characterized in that described spring balance slide mechanism (5), constitute by slide rail (51), slide plate (52), slide rail (51) is fixed on the top left end of fixed mount (1), and parallelly establish two, sliding mouthful of slide plate (52) bottom surface is stuck on two slide rails (51), spring balance (2) be fixed on slide plate (52) above, on slide plate (52), be carved with the indicating graduation (53) of spring balance.
3, frictional experiment demonstration instrument for teaching according to claim 1, it is characterized in that described uniform rotation mechanism (6), by supporting plane plate (61), slowspeed machine (62), endless conveyor belt (63), driving shaft (64), driven axle (65) constitutes, supporting plane plate (61) is located at the upper right of fixed mount (1), the two ends of driven axle (65) and driving shaft (64) are fixed on the both sides of supporting plane plate (61) respectively with axle sleeve, slowspeed machine (62) is fixed on the fixed mount (1) of driving shaft (64) end, and be connected with battery case (67) on the supporting plane plate (61) by lead (66), gear on the slowspeed machine (62) and the engagement of driving shaft (64) end gear, sheathed endless conveyor belt (63) between driven axle (65) and driving shaft (64), supporting plane plate (61) is inserted in the bottom surface on endless conveyor belt (63) upper strata, go up the parallel side-friction face of establishing three wide different materials at endless conveyor belt (63), can be respectively by silk, nonwoven fabrics, alum cloth is made.
4, frictional experiment demonstration instrument for teaching according to claim 1, the bottom surface that it is characterized in that slide block (4) is the plane, is provided with four scroll wheels (41) above, the middle part is provided with load-carrying hole (42), regulates counterweight and puts into load-carrying hole (42).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520080387 CN2775775Y (en) | 2005-01-28 | 2005-01-28 | Friction test teaching demonstration instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520080387 CN2775775Y (en) | 2005-01-28 | 2005-01-28 | Friction test teaching demonstration instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2775775Y true CN2775775Y (en) | 2006-04-26 |
Family
ID=36750091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520080387 Expired - Fee Related CN2775775Y (en) | 2005-01-28 | 2005-01-28 | Friction test teaching demonstration instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2775775Y (en) |
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 |
| CN103578330A (en) * | 2012-07-27 | 2014-02-12 | 郭茂清 | All-purpose friction force exploration instrument |
| CN105243932A (en) * | 2015-08-30 | 2016-01-13 | 盐城工学院 | Frictional vibration generation method and device |
| CN108480054A (en) * | 2018-02-10 | 2018-09-04 | 中国矿业大学 | A kind of adjustable powder electric separation environmental protection collection device of wall friction material rotation |
| CN109387313A (en) * | 2018-09-18 | 2019-02-26 | 江苏大学 | A kind of adjustable straight line small and special electric machine thrust-measuring device of dual load |
| CN109637303A (en) * | 2019-02-26 | 2019-04-16 | 吕德盛 | A kind of frictional force study apparatus for demonstrating |
| CN113284402A (en) * | 2021-05-17 | 2021-08-20 | 许文龙 | A novel demonstration teaching aid for physics frictional force experiment |
-
2005
- 2005-01-28 CN CN 200520080387 patent/CN2775775Y/en not_active Expired - Fee Related
Cited By (10)
| 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 |
| CN103578330A (en) * | 2012-07-27 | 2014-02-12 | 郭茂清 | All-purpose friction force exploration instrument |
| CN103578330B (en) * | 2012-07-27 | 2016-01-20 | 郭茂清 | Friction force exploring instrument |
| CN105243932A (en) * | 2015-08-30 | 2016-01-13 | 盐城工学院 | Frictional vibration generation method and device |
| CN108480054A (en) * | 2018-02-10 | 2018-09-04 | 中国矿业大学 | A kind of adjustable powder electric separation environmental protection collection device of wall friction material rotation |
| CN108480054B (en) * | 2018-02-10 | 2019-12-03 | 中国矿业大学 | A kind of adjustable powder electric separation environmental protection collection device of wall friction material rotation |
| CN109387313A (en) * | 2018-09-18 | 2019-02-26 | 江苏大学 | A kind of adjustable straight line small and special electric machine thrust-measuring device of dual load |
| CN109387313B (en) * | 2018-09-18 | 2020-08-28 | 江苏大学 | Double-load-adjustable thrust measuring device for linear micro and special motor |
| CN109637303A (en) * | 2019-02-26 | 2019-04-16 | 吕德盛 | A kind of frictional force study apparatus for demonstrating |
| CN113284402A (en) * | 2021-05-17 | 2021-08-20 | 许文龙 | A novel demonstration teaching aid for physics frictional force experiment |
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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 |