CN208908099U - A kind of friction force demonstration device - Google Patents
A kind of friction force demonstration device Download PDFInfo
- Publication number
- CN208908099U CN208908099U CN201820911640.1U CN201820911640U CN208908099U CN 208908099 U CN208908099 U CN 208908099U CN 201820911640 U CN201820911640 U CN 201820911640U CN 208908099 U CN208908099 U CN 208908099U
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- China
- Prior art keywords
- work department
- transfer roller
- friction
- postposition
- preposition
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Abstract
The utility model relates to a kind of friction force demonstration device in instruments used for education field, friction testing platform includes left work department, right work department and its intermediate work department being arranged among left work department and right work department；Left work department and right work department are directly anchored on support frame；The front-end and back-end of intermediate work department are respectively arranged with preposition transfer roller and postposition transfer roller, and fricting working surface is surrounded between preposition transfer roller and postposition transfer roller, is provided with rotating device on preposition transfer roller or postposition transfer roller；Fricting working surface includes that several groups divide working face, and several groups divide working face to be successively spliced from beginning to end；Friction block is provided on fricting working surface；The front end of support frame corresponds to friction block setting driving work department, drives and is provided with dynamometer between work department and friction block；The utility model can simultaneously under simulated experiment different roughness environment frictional force, operate and practise convenient for student, improve the cognition degree of student, while promoting quality of instruction.
Description
Technical field
The utility model relates to friction force demonstration devices a kind of in instruments used for education field.
Background technique
In physics teaching in secondary school, force of sliding friction is the emphasis and difficult point of teaching, and breaks through the best of this difficult point
Method is that student is allowed to go the size of understanding force of sliding friction related with which factor by experiment；Current experimental method is mainly
Wood particle is horizontally hauled with weight beam to move with uniform velocity on one piece of long plank, using the condition of balance between two forces, is passed through
The registration of weight beam obtains the size of force of sliding friction；In the prior art, since environment is limited, one kind can only often be done
The frictional force of roughness is tested, and when the frictional force of Yao Jinhang different roughness is tested, is operated more troublesome；The prior art
In, application number 201310463802.1, applying date 2013.10.08,103473973 A of application publication number CN, Shen Qing Publication
A kind of sliding friction force demonstration apparatus of day 2013.12.25, construction include weight beam, fixed pulley, sliding block, long wood
Block, weight, motor, filament, reading plate, vertical plate and power supply, it is characterised in that: weight beam is fixed on reading plate vertically
On, it is arranged right below fixed pulley, fixed pulley is connect by filament one end with weight beam, and the other end is connected with sliding block, sliding
Block is placed horizontally on long wooden unit, and the other end of long wooden unit is connected by filament with motor, and long wooden unit is done under motor drive
Horizontal linear uniform motion；The utility model can not be rapidly performed by replacement rough surface, can only be enterprising in single rough surface
Row experiment；Service efficiency is not high.
Utility model content
The purpose of the utility model is to provide a kind of friction force demonstration device, which being capable of the difference of simulated experiment simultaneously
Frictional force under roughness environment, operates and is practised convenient for student, improves the cognition degree of student, while promoting teaching matter
Amount.
Purpose of the utility model is realized as follows: a kind of friction force demonstration device, including support frame, support frame are fixed on
It is provided with friction testing platform on workbench, on support frame, friction testing platform includes left work department, right work department and its sets
Set the intermediate work department among left work department and right work department；Left work department and right work department are directly anchored on support frame；In
Between the front-end and back-end of work department be respectively arranged with preposition transfer roller and postposition transfer roller, around setting between preposition transfer roller and postposition transfer roller
It is equipped with fricting working surface, is provided with rotating device on preposition transfer roller or postposition transfer roller；Fricting working surface includes the several groups division of labor
Make face, several groups divide working face to be successively spliced from beginning to end；Friction block is provided on fricting working surface；The front end of support frame is corresponding
Friction block setting driving work department, drives and is provided with dynamometer between work department and friction block.
When utility model works, when student carries out frictional force experiment, support frame is placed on the table first,
Adjust preposition transfer roller and postposition transfer roller by rotating device, so drive fricting working surface along preposition transfer roller and postposition transfer roller into
Row rotates, and divides working face to form using several groups on fricting working surface, then directly working face will be divided to turn to uppermost position
It sets；After friction block is placed on dividing working face, then again pass through dynamometer connection driving work department, operation, driving
Work department is started to work, and then starts to draw high dynamometer, finally friction block is driven to be moved；Student can observe dynamometer
Then registration calculates the size of frictional force by mobile distance again；When carrying out the laboratory of differentiated friction power, behaviour
Make personnel and only needs to switch the different frictional force sizes for dividing working face to test under different roughness, it is simple and convenient.
The beneficial effects of the utility model are, which can be simultaneously under simulated experiment different roughness environment
Frictional force operates and is practised convenient for student, improves the cognition degree of student, while promoting quality of instruction.
It can work normally and not beat for the preposition transfer roller of guarantee and postposition transfer roller as a further improvement of the utility model,
It is sliding；Preposition transfer roller and postposition transfer roller are symmetrical arranged, and the surface of preposition transfer roller and postposition transfer roller is coated with anti-slip layer.
It as a further improvement of the utility model, being capable of normal frictional force experiment for guarantee student；Drive work department
Fixing seat including corresponding support frame setting, driving motor arranged on the fixing seat, driving motor are fixed by fixed device
In fixing seat, drum is provided on driving motor, the upper cotton rope of drum is connect with dynamometer, and dynamometer passes through cotton rope and rubs
Cleaning block connection.
The frictional force under different roughness can be normally carried out as a further improvement of the utility model, for guarantee student
Experiment；Divide working face to be provided with four groups, the successively splicing of working face is divided to be arranged；Each divide the roughness of face surface different
It causes.
As a further improvement of the utility model, to guarantee that student can accurately test, guarantee will not be generated
Error；Each divide between working face and is distinguished by line segment.
It is tested as a further improvement of the utility model, to guarantee that student can test the frictional force under friction speed；
Driving motor is variable speed electric motors, particularly.
Detailed description of the invention
Fig. 1 is the main view of the utility model.
Fig. 2 is the top view of friction testing platform.
Fig. 3 is the top view of fricting working surface.
Wherein, 1 driving motor, 2 dynamometers, 3 cotton ropes, 4 friction blocks, 5 postposition transfer rollers, 6 support frames, 7 preposition transfer rollers, 8 lines
Disk, 9 fixing seats, 10 left work departments, 11 right work departments, 12 intermediate 13 fricting working surfaces of work department, 14 points of working faces, 15 line segments.
Specific embodiment
As shown in Figure 1-3, purpose of the utility model is realized as follows: a kind of friction force demonstration device, including support frame
6, support frame 6 is fixed on the table, friction testing platform is provided on support frame 6, friction testing platform includes left work
Portion 10, right work department 11 and its intermediate work department 12 being arranged among left work department 10 and right work department 11；Left 10 He of work department
Right work department 11 is directly anchored on support frame 6；The front-end and back-end of intermediate work department 12 are respectively arranged with preposition transfer roller 7 with after
Transfer roller 5 is set, fricting working surface 13, preposition transfer roller 7 or postposition transfer roller 5 are surrounded between preposition transfer roller 7 and postposition transfer roller 5
On be provided with rotating device；Fricting working surface 13 includes that several groups divide working face 14, and several groups divide working face 14, and successively head and the tail are spelled
It connects；Friction block 4 is provided on fricting working surface 13；The front end of support frame 6 corresponds to the setting driving work department of friction block 4, drives
Dynamometer 2 is provided between dynamic work department and friction block 4；Preposition transfer roller 7 and postposition transfer roller 5 are symmetrical arranged, and preposition transfer roller 7 is with after
The surface for setting transfer roller 5 is coated with anti-slip layer；Driving work department includes the fixing seat 9 that corresponding support frame 6 is arranged, and is arranged in fixing seat 9
On driving motor 1, driving motor 1 is fixed in fixing seat 9 by fixed device, and drum 8, line are provided on driving motor 1
The upper cotton rope 3 of disk 8 is connect with dynamometer 2, and dynamometer 2 is connect by cotton rope 3 with friction block 4；Working face 14 is divided to be provided with four
Group divides the successively splicing of working face 14 to be arranged；Each divide the roughness on 14 surface of working face inconsistent；Each divide working face 14
Between distinguished by line segment 15；Driving motor 1 is variable speed electric motors, particularly.
When utility model works, when student carries out frictional force experiment, support frame 6 is placed on workbench first
On, preposition transfer roller 7 and postposition transfer roller 5 are adjusted by rotating device, and then drive fricting working surface 13 along preposition transfer roller 7 with after
It sets transfer roller 5 to be rotated, the nonskid coating being arranged on preposition transfer roller 7 and postposition transfer roller 5 can be avoided to be beaten during rotation
The generation of sliding phenomenon；Divide working face 14 to form using several groups on fricting working surface 13, then directly working face 14 will be divided to rotate
It is distinguished to uppermost position and by line segment 15；After on dividing working face 14 place friction block 4, then pass through survey again
The driving motor 1 of the connection driving work department of power meter 2, operation drive the driving motor 1 of work department to start to work, Jin Erkai
Beginning draws high dynamometer 2, finally friction block 4 is driven to be moved；Student can observe the registration of dynamometer 2 and then pass through movement again
Distance so that calculate the size of frictional force；When carrying out the laboratory of differentiated friction power, operator only needs to switch not
The same frictional force size for dividing working face 14 to test under different roughness, it is simple and convenient.
The utility model is not limited to above-described embodiment, on the basis of technical solution disclosed by the utility model, this
For the technical staff in field according to disclosed technology contents, not needing creative labor can be special to some of which technology
Sign makes some replacements and deformation, these replacements and deformation are within the protection scope of the present utility model.
Claims (6)
1. a kind of friction force demonstration device, including support frame, support frame as described above is fixed on the table, which is characterized in that the branch
Friction testing platform is provided on support, the friction testing platform includes left work department, right work department and its left work of setting
Make the intermediate work department among portion and right work department；The left work department and right work department are directly anchored on support frame；It is described
The front-end and back-end of intermediate work department are respectively arranged with preposition transfer roller and postposition transfer roller, between the preposition transfer roller and postposition transfer roller
It is surrounded with fricting working surface, is provided with rotating device on the preposition transfer roller or postposition transfer roller；The fricting working surface
Divide working face including several groups, the several groups divide working face to be successively spliced from beginning to end；It is provided on the fricting working surface
Friction block；The front end of support frame as described above corresponds to friction block setting driving work department, sets between driving work department and the friction block
It is equipped with dynamometer.
2. a kind of friction force demonstration device according to claim 1, it is characterised in that: the preposition transfer roller and postposition transfer roller pair
Claim to be arranged, the surface of the preposition transfer roller and postposition transfer roller is coated with anti-slip layer.
3. a kind of friction force demonstration device according to claim 1, it is characterised in that: the driving work department includes corresponding branch
The fixing seat of support setting, driving motor arranged on the fixing seat, the driving motor are fixed on fixation by fixed device
On seat, drum is provided on the driving motor, the upper cotton rope of the drum is connect with dynamometer, and the dynamometer passes through line
Rope is connect with friction block.
4. a kind of friction force demonstration device according to claim 1, it is characterised in that: it is described that working face is divided to be provided with four groups,
The successively splicing setting of described point of working face；Each divide the roughness of face surface inconsistent.
5. a kind of friction force demonstration device according to claim 1 or 4, it is characterised in that: described each to divide between working face
It is distinguished by line segment.
6. a kind of friction force demonstration device according to claim 3, it is characterised in that: the driving motor is variable speed electric motors, particularly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820911640.1U CN208908099U (en) | 2018-06-13 | 2018-06-13 | A kind of friction force demonstration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820911640.1U CN208908099U (en) | 2018-06-13 | 2018-06-13 | A kind of friction force demonstration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208908099U true CN208908099U (en) | 2019-05-28 |
Family
ID=66612394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820911640.1U Expired - Fee Related CN208908099U (en) | 2018-06-13 | 2018-06-13 | A kind of friction force demonstration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208908099U (en) |
-
2018
- 2018-06-13 CN CN201820911640.1U patent/CN208908099U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190528 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |