CN206833771U - Friction force demonstration device - Google Patents
Friction force demonstration device Download PDFInfo
- Publication number
- CN206833771U CN206833771U CN201720438468.8U CN201720438468U CN206833771U CN 206833771 U CN206833771 U CN 206833771U CN 201720438468 U CN201720438468 U CN 201720438468U CN 206833771 U CN206833771 U CN 206833771U
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- CN
- China
- Prior art keywords
- sliding block
- rubbing surface
- weight beam
- demonstration device
- friction force
- 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 discloses friction force demonstration device, including experimental bench, the experimental bench upper surface is equipped with the first rubbing surface and the second rubbing surface, and first rubbing surface be located at the side of the second rubbing surface, sliding block is placed with first rubbing surface, and the retainer ring on sliding block is fixedly connected with the draw hook on weight beam, the weight beam is fixedly connected by pull rope with motor.In the utility model, standing groove is offered on sliding block first, place the counterweight of different quality, the different relations with frictional force size of pressure can be demonstrated, next is provided with two different rubbing surfaces of roughness, influence of the contact surface degree of roughness to frictional force can be demonstrated, so that the friction force demonstration device, the pressure and the degree of roughness of contact surface the two factors for influenceing frictional force can be demonstrated, secondly the movement of motor driven sliding block is set, it can ensure that sliding block does linear uniform motion, so that frictional force is equal to the reading of weight beam, measurement is more accurate.
Description
Technical field
It the utility model is related to apparatus for demonstrating technical field, more particularly to friction force demonstration device.
Background technology
Hinder relative motion of object（Or relative motion trend）Power be called frictional force, the direction of frictional force is relative with object
Motion（Or relative motion trend）It is in opposite direction, frictional force is divided into stiction, rolling friction, three kinds, one of sliding friction
Object produces the friction for hindering their relative motions when another body surface slides between contact surface, referred to as slide and rub
Wipe, the size of force of sliding friction is relevant with the size and pressure size of the degree of roughness of contact surface.Pressure is bigger, object contact surface
More coarse, caused force of sliding friction is bigger.
But existing friction force demonstration device, in use there is in place of some shortcomings, demonstration operation is complicated,
Pressure and influence of the roughness difference of contact surface to pressure can not be demonstrated, secondly existing friction force demonstration device, typically all
It is manually to pull sliding block movement so that sliding block can not make linear uniform motion, test the data measured, exist certain
Error.
Utility model content
The purpose of this utility model is and the friction force demonstration dress proposed in order to solve shortcoming present in prior art
Put.
To achieve these goals, the utility model employs following technical scheme：Friction force demonstration device, including experiment
Platform, four corners of the experimental bench bottom are provided with supporting leg, and the experimental bench upper surface is equipped with the first rubbing surface and
Two rubbing surfaces, and the side of the first rubbing surface is fixedly connected with the side of the second rubbing surface, is placed with first rubbing surface
Sliding block, and the traction hook connects in the retainer ring and weight beam on sliding block, graduated scale is provided with the weight beam,
The weight beam is positioned on the second rubbing surface by pull rope and motor connection, described motor, the experimental bench bottom
Electric cabinet is provided with portion, control button is provided with the electric cabinet procapsid, standing groove is offered on the sliding block, it is described
Counterweight is placed with inside standing groove, and handle is provided with counterweight, the sliding block, weight beam and motor are in same level
On line, the electric cabinet electrical connection control button and motor.
Preferably, the degree of roughness of first rubbing surface is less than the second rubbing surface.
Preferably, the electric cabinet electric connection of power supply line.
In the utility model, standing groove is offered on sliding block first, places the counterweight of different quality, pressure can be demonstrated not
With the relation with frictional force size, next is provided with two different rubbing surfaces of roughness, can demonstrate contact surface degree of roughness
Influence to frictional force so that the friction force demonstration device, can be to influenceing the pressure of frictional force and the degree of roughness of contact surface
The two factors are demonstrated, multiple functional, easy to use, secondly set the movement of motor driven sliding block, it is ensured that sliding block
Do linear uniform motion so that frictional force is equal to the reading of weight beam, compared to traditional artificial pulling weight beam
Band movable slider moves, and measurement is more accurate.
Brief description of the drawings
Fig. 1 be the utility model proposes friction force demonstration device structural representation；
Fig. 2 is the structural representation of the utility model sliding block.
Marginal data：
1- supporting legs, 2- experimental benches, the rubbing surfaces of 3- first, 4- sliding blocks, 5- retainer rings, 6- draw hooks, 7- weight beams, 8-
Graduated scale, 9- pull ropes, the rubbing surfaces of 10- second, 11- motors, 12- electric cabinets, 13- control buttons, 14- power lines, 15- are placed
Groove, 16- counterweights, 17- handles.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.
Reference picture 1-2, friction force demonstration device, including experimental bench 2, four corners of the bottom of experimental bench 2 are provided with branch
Leg 1, the upper surface of experimental bench 2 is equipped with the first rubbing surface 3 and the second rubbing surface 10, and the side of the first rubbing surface 3 is rubbed with second
The side in wiping face 10 is fixedly connected, and sliding block 4, and the retainer ring 5 on sliding block 4 and weight beam 7 are placed with the first rubbing surface 3
On draw hook 6 connect, graduated scale 8 is provided with weight beam 7, weight beam 7 is connected by pull rope 9 and motor 11
Connect, motor 11 be positioned on the second rubbing surface 10, electric cabinet 12 is provided with the bottom of experimental bench 2, on the procapsid of electric cabinet 12
Control button 13 is provided with, standing groove 15 is offered on sliding block 4, counterweight 16 is placed with inside standing groove 15, and set on counterweight 16
Handle 17 is equipped with, sliding block 4, weight beam 7 and motor 11 are in same horizontal line, and electric cabinet 12 electrically connects control button 13
With motor 11.
The degree of roughness of first rubbing surface 3 is less than the second rubbing surface 10, the electric connection of power supply line 14 of electric cabinet 12.
The setting of standing groove 15 on sliding block 4, it is intended that the counterweight of the placement different quality of standing groove 15 can be utilized
16, so as to the size of demonstration friction and the relation of pressure, it is provided with the first different rubbing surface 3 of degree of roughness and the second friction
Face 10, its object is to demonstrate out influence of the contact surface degree of roughness to frictional force.
Operation principle：In use, adding counterweight 16 first into the standing groove 15 on sliding block 4, open motor 11 and at the uniform velocity turn
Dynamic, motor 11 is moved by pull rope 9, weight beam 7 with movable slider 4, now observes and records sliding block 4 respectively in the first friction
The reading of weight beam 7, can be contrasted by front and rear data, can compare contact surface when on the rubbing surface 10 of face 3 and second
Influence of the degree of roughness to frictional force, then removes counterweight 16, starts the measurement of first time again by motor 11, observes respectively
Record sliding block 4 respectively when on the first rubbing surface 3 and the second rubbing surface 10 weight beam 7 reading, enter with first group of data
Row contrast, the different relations with frictional force size of pressure, whole device entire run can be compared.
It is described above, the only preferable embodiment of the utility model, but the scope of protection of the utility model is not
This is confined to, any one skilled in the art is in the technical scope that the utility model discloses, according to this practicality
New technical scheme and its utility model design are subject to equivalent substitution or change, should all cover in protection model of the present utility model
Within enclosing.
Claims (3)
1. friction force demonstration device, including experimental bench（2）, it is characterised in that the experimental bench（2）Four corners of bottom set
It is equipped with supporting leg（1）, the experimental bench（2）Upper surface is equipped with the first rubbing surface（3）With the second rubbing surface（10）, and the first friction
Face（3）Side and the second rubbing surface（10）Side be fixedly connected, first rubbing surface（3）On be placed with sliding block（4）, and
Sliding block（4）On retainer ring（5）With weight beam（7）On draw hook（6）Connection, the weight beam（7）Upper setting
There is graduated scale（8）, the weight beam（7）Pass through pull rope（9）With motor（11）Connection, described motor（11）It is positioned over
Second rubbing surface（10）On, the experimental bench（2）Electric cabinet is provided with bottom（12）, the electric cabinet（12）Set on procapsid
It is equipped with control button（13）, the sliding block（4）On offer standing groove（15）, the standing groove（15）Inside is placed with counterweight
（16）, and counterweight（16）On be provided with handle（17）, the sliding block（4）, weight beam（7）And motor（11）In same water
On horizontal line, the electric cabinet（12）Electrically connect control button（13）And motor（11）.
2. friction force demonstration device according to claim 1, it is characterised in that first rubbing surface（3）Coarse journey
Degree is less than the second rubbing surface（10）.
3. friction force demonstration device according to claim 1, it is characterised in that the electric cabinet（12）Electric connection of power supply line
（14）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720438468.8U CN206833771U (en) | 2017-04-25 | 2017-04-25 | Friction force demonstration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720438468.8U CN206833771U (en) | 2017-04-25 | 2017-04-25 | Friction force demonstration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206833771U true CN206833771U (en) | 2018-01-02 |
Family
ID=60769470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720438468.8U Expired - Fee Related CN206833771U (en) | 2017-04-25 | 2017-04-25 | Friction force demonstration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206833771U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109256018A (en) * | 2018-10-29 | 2019-01-22 | 四川省通江县永安中学校 | A kind of experiment instrument of the correlative factor of test influence frictional force |
| CN110648569A (en) * | 2019-09-23 | 2020-01-03 | 西京学院 | Frictional force demonstration platform for physics experiments |
| CN111243395A (en) * | 2019-11-26 | 2020-06-05 | 长春理工大学 | Comprehensive experiment device and experiment method for sliding friction force |
-
2017
- 2017-04-25 CN CN201720438468.8U patent/CN206833771U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109256018A (en) * | 2018-10-29 | 2019-01-22 | 四川省通江县永安中学校 | A kind of experiment instrument of the correlative factor of test influence frictional force |
| CN110648569A (en) * | 2019-09-23 | 2020-01-03 | 西京学院 | Frictional force demonstration platform for physics experiments |
| CN111243395A (en) * | 2019-11-26 | 2020-06-05 | 长春理工大学 | Comprehensive experiment device and experiment method for sliding friction force |
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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: 20180102 Termination date: 20180425 |
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| CF01 | Termination of patent right due to non-payment of annual fee |