CN207818030U - A kind of friction force demonstration device - Google Patents
A kind of friction force demonstration device Download PDFInfo
- Publication number
- CN207818030U CN207818030U CN201721456683.7U CN201721456683U CN207818030U CN 207818030 U CN207818030 U CN 207818030U CN 201721456683 U CN201721456683 U CN 201721456683U CN 207818030 U CN207818030 U CN 207818030U
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- CN
- China
- Prior art keywords
- counterweight
- small handcart
- workbench
- friction force
- pointer
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Abstract
The utility model discloses a kind of friction force demonstration devices, including substrate, workbench, dynamometer spring, first fixed pulley, second chain rope and the second fixed pulley, counterweight storage device is provided between the substrate and workbench, and the upper right side of workbench is equipped with cushion block, the upper ends of the cushion block have brake pad, the inside left end of the workbench is equipped with the second sliding rail, the outer ring of first fixed pulley is wound with the first chain rope, the outer ring of second fixed pulley is wound with the second chain rope, and second chain rope left end and right end be connected separately with small handcart and counterweight and aggravate platform, the inside that the counterweight aggravates platform is placed with counterweight.The friction force demonstration device, pointer fixing piece and pointer are mounted on the lower end of dynamometer spring in a manner of lifting, it avoids damaging dynamometer spring because frictional force is excessive, small handcart is arranged the accuracy that can increase frictional force experiment in a manner of dual, and can the experiment of multiple frictional force be carried out at the same time.
Description
Technical field
The utility model is related to frictional force technical field, specially a kind of friction force demonstration device.
Background technology
Frictional force is a noun of classical mechanics, refers to that two objects contacted with each other are elastic, when they will occur
Or when having trend that relative motion occurs, a kind of power hindering relative motion will be generated on the contact surface, this power, which is just called, rubs
It wipes when power object moves in liquids and gases also by frictional force, therefore friction force demonstration device just seems outstanding in present teaching
Its is important, but the accuracy of the friction force demonstration device experimental verification frictional force used now is not high, can not be carried out at the same time
Multiple frictional force experiments, and it is inconvenient to use.
Invention content
The purpose of this utility model is to provide a kind of friction force demonstration devices, to solve mesh mentioned above in the background art
The accuracy of the preceding friction force demonstration device experimental verification frictional force used now is not high, can not be carried out at the same time multiple frictional force
Experiment, and inconvenient problem with use.
To achieve the above object, the utility model provides the following technical solutions：A kind of friction force demonstration device, including substrate,
Workbench, dynamometer spring, the first fixed pulley, the second chain rope and the second fixed pulley, weight is provided between the substrate and workbench
Code storage device, and the upper right side of workbench is equipped with cushion block, the upper ends of the cushion block have brake pad, the workbench
Internal left end is equipped with the second sliding rail, and the upper end of the second sliding rail is provided with small handcart, and the lower end of the small handcart is equipped with rolling
Wheel, and the inside left end of small handcart is provided with scale plate, the dynamometer spring is connect by linking up with small handcart, and dynamometer spring
Lower end be fixed with pointer fixing piece, the left end of the pointer fixing piece is connected with pointer, and the outer ring of first fixed pulley twines
It is wound with the first chain rope, and the left end of the first chain rope and right end are connected separately with dynamometer spring and brake pad, second fixed pulley
Outer ring be wound with the second chain rope, and the left end of the second chain rope and right end are connected separately with small handcart and counterweight aggravates platform, institute
The inside for stating counterweight exacerbation platform is placed with counterweight.
Preferably, the counterweight storage device is made of the first sliding rail, active carbon layer, partition board and counterweight placing groove, and the
It is provided with counterweight placing groove between one sliding rail, partition board is installed between counterweight placing groove, the lower end of counterweight placing groove is provided with work
Property layer of charcoal.
Preferably, the cushion block is connect in a manner of being bonded with workbench, and the vertical tangent plane of cushion block is " recessed " type structure.
Preferably, the small handcart is moving structure between the second sliding rail, and the moving range of small handcart and second is slided
The equal length of rail, and the quantity of small handcart is two.
Preferably, the pointer fixing piece and pointer are lifting structure in the lower end of dynamometer spring, and the maximum of pointer
Lifting amount is identical with the largest deformation amount of dynamometer spring.
Preferably, it is lifting structure that the counterweight, which aggravates platform in the lower end of the second chain rope, and it is three that counterweight, which aggravates platform,
Angular structure.
Compared with prior art, the utility model has the beneficial effects that：The friction force demonstration device, cushion block is with concave structure
Mode is mounted on the upper end of workbench, convenient for there is the case where brake pad is fallen from cushion block when carrying out frictional experiment, favorably
In the progress of experiment, the accuracy of experiment can be improved, pointer fixing piece and pointer are mounted on dynamometry bullet in a manner of lifting
The lower end of spring avoids damaging dynamometer spring because frictional force is excessive, is conducive to the service life for increasing dynamometer spring, scale
Plate is provided with conducive to the size that user can be allowed to be accurately judged to frictional force, and counterweight storage device is mounted on substrate and work
Be conducive to the placement and storage of counterweight between platform, and be conducive to when carrying out frictional experiment convenient for taking to counterweight, Neng Gouneng
Add experiment rate, small handcart to be provided with the progress conducive to frictional experiment in a manner of dual, and frictional force experiment can be increased
Accuracy, and can the experiment of multiple frictional force be carried out at the same time, it is easy to use and simple in structure.
Description of the drawings
Fig. 1 is the utility model positive structure diagram；
Fig. 2 is the left side structure schematic view of the utility model；
Fig. 3 is the utility model overlooking structure diagram.
In figure：1, substrate, 2, counterweight storage device, the 201, first sliding rail, 202, active carbon layer, 203, partition board, 204, weight
Code placing groove, 3, workbench, 4, cushion block, 5, brake pad, the 6, second sliding rail, 7, small handcart, 8, scale plate, 9, hook, 10, dynamometry
Spring, 11, pointer fixing piece, 12, pointer, the 13, first fixed pulley, the 14, first chain rope, 15, idler wheel, the 16, second chain rope, 17,
Second fixed pulley, 18, counterweight aggravate platform, 19, counterweight.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
- 3 are please referred to Fig.1, the utility model provides a kind of technical solution：A kind of friction force demonstration device, including substrate 1, weight
Code storage device 2, the first sliding rail 201, active carbon layer 202, partition board 203, counterweight placing groove 204, workbench 3, cushion block 4, friction
Block 5, the second sliding rail 6, small handcart 7, scale plate 8, hook 9, dynamometer spring 10, pointer fixing piece 11, pointer 12, the first fixed pulley
13, the first chain rope 14, idler wheel 15, the second chain rope 16, the second fixed pulley 17, counterweight aggravate platform 18 and counterweight 19, substrate 1 and work
Make to be provided with counterweight storage device 2 between platform 3, and the upper right side of workbench 3 is equipped with cushion block 4, counterweight storage device 2 is by first
Sliding rail 201, active carbon layer 202, partition board 203 and counterweight placing groove 204 form, and are provided with counterweight between the first sliding rail 201 and put
Slot 204 to be set, partition board 203 is installed between counterweight placing groove 204, the lower end of counterweight placing groove 204 is provided with active carbon layer 202,
Be conducive to the placement and storage of counterweight 19, and be conducive to add convenient for taking to counterweight 19 when carrying out frictional experiment
Rate is tested, the upper ends of cushion block 4 have brake pad 5, cushion block 4 to be connect with workbench 3 in a manner of bonding, and cushion block 4 is perpendicular
Section is that " recessed " type structure is conducive to reality convenient for there is the case where brake pad 5 is fallen from cushion block 4 when carrying out frictional experiment
The progress tested, can improve the accuracy of experiment, and the inside left end of workbench 3 is equipped with the second sliding rail 6, and the second sliding rail 6
Upper end is provided with small handcart 7, and small handcart 7 is moving structure between the second sliding rail 6, and the moving range of small handcart 7 and second
The equal length of sliding rail 6, and the quantity of small handcart 7 is two, is conducive to the progress of frictional experiment, and can increase the friction
The accuracy of power experiment, and can the experiment of multiple frictional force be carried out at the same time, be conducive to increase frictional force conventional efficient, small handcart 7
Lower end idler wheel 15 is installed, and the inside left end of small handcart 7 is provided with scale plate 8, and dynamometer spring 10 is pushed away by hook 9 with small
Vehicle 7 connects, and the lower end of dynamometer spring 10 is fixed with pointer fixing piece 11, and the left end of pointer fixing piece 11 is connected with pointer 12,
Pointer fixing piece 11 and pointer 12 are lifting structure in the lower end of dynamometer spring 10, and the maximum lifting amount and dynamometry of pointer 12
The largest deformation amount of spring 10 is identical, avoids damaging dynamometer spring 10 because frictional force is excessive, is conducive to increase dynamometry bullet
The service life of spring 10, and user can be allowed to be accurately judged to the size of frictional force, the outer ring of the first fixed pulley 13 is wound with
First chain rope 14, and the left end of the first chain rope 14 and right end are connected separately with dynamometer spring 10 and brake pad 5, the second fixed pulley 17
Outer ring be wound with the second chain rope 16, and the left end of the second chain rope 16 and right end be connected separately with small handcart 7 and counterweight aggravate it is flat
Platform 18, it is lifting structure that counterweight, which aggravates platform 18 in the lower end of the second chain rope 16, and it is triangular structure that counterweight, which aggravates platform 18,
Be conducive to drive the movement of small handcart 7, and be conducive to the progress of frictional force experiment, the inside that counterweight aggravates platform 18 is placed with weight
Code 19.
Operation principle：When using the friction force demonstration device, pass through the first sliding rail inside counterweight storage device 2 first
201 pull out counterweight placing groove 204 to come, then the counterweight inside counterweight placing groove 204 is placed on counterweight as required and is aggravated
Platform 18 and small handcart 7, the first chain rope are aggravated in the inside of platform 18 because the left and right ends of the second chain rope 16 are connected separately with counterweight
14 left and right ends are connected separately with dynamometer spring 10 and brake pad 5, and small handcart 7 delays under the action of the second fixed pulley 17 at this time
Slowly it is moved to the left, while brake pad 5 is slowly moved to the left under the action of the first fixed pulley 13, in the process, dynamometer spring
10 states in elongation, while pointer 12 is directed toward under the action of dynamometer spring 10 at a certain scale of scale plate 8, and then
Subtract original scale, just the size of the frictional force of brake pad 5 thus, at the same can by increased or decrease the quantity of counterweight 19 come
The frictional force of 5 different times of testing friction block, easy to use and simple in structure, the setting of last double small cart 7 can increase this
The accuracy of frictional force experiment, and can the experiment of multiple frictional force be carried out at the same time, the content not being described in detail in this specification
Belong to the prior art well known to professional and technical personnel in the field.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is appreciated that can these embodiments be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaiied
Change, replace and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.
Claims (6)
1. a kind of friction force demonstration device, including substrate（1）, workbench（3）, dynamometer spring（10）, the first fixed pulley（13）, second
Chain rope（16）With the second fixed pulley（17）, it is characterised in that：The substrate（1）And workbench（3）Between be provided with counterweight storage
Device（2）, and workbench（3）Upper right side cushion block is installed（4）, the cushion block（4）Upper ends have brake pad（5）, institute
State workbench（3）Inside left end the second sliding rail is installed（6）, and the second sliding rail（6）Upper end be provided with small handcart（7）, institute
State small handcart（7）Lower end idler wheel is installed（15）, and small handcart（7）Inside left end be provided with scale plate（8）, the dynamometry
Spring（10）Pass through hook（9）With small handcart（7）Connection, and dynamometer spring（10）Lower end be fixed with pointer fixing piece（11）,
The pointer fixing piece（11）Left end be connected with pointer（12）, first fixed pulley（13）Outer ring be wound with the first chain rope
（14）, and the first chain rope（14）Left end and right end be connected separately with dynamometer spring（10）And brake pad（5）, described second is fixed sliding
Wheel（17）Outer ring be wound with the second chain rope（16）, and the second chain rope（16）Left end and right end be connected separately with small handcart（7）
Platform is aggravated with counterweight（18）, the counterweight exacerbation platform（18）Inside be placed with counterweight（19）.
2. a kind of friction force demonstration device according to claim 1, it is characterised in that：The counterweight storage device（2）By
One sliding rail（201）, active carbon layer（202）, partition board（203）With counterweight placing groove（204）Composition, and the first sliding rail（201）Between
It is provided with counterweight placing groove（204）, counterweight placing groove（204）Between partition board is installed（203）, counterweight placing groove（204）Under
End is provided with active carbon layer（202）.
3. a kind of friction force demonstration device according to claim 1, it is characterised in that：The cushion block（4）In a manner of bonding
With workbench（3）Connection, and cushion block（4）Vertical tangent plane be " recessed " type structure.
4. a kind of friction force demonstration device according to claim 1, it is characterised in that：The small handcart（7）In the second sliding rail
（6）Between be moving structure, and small handcart（7）Moving range and the second sliding rail（6）Equal length, and small handcart（7）
Quantity be two.
5. a kind of friction force demonstration device according to claim 1, it is characterised in that：The pointer fixing piece（11）And pointer
（12）In dynamometer spring（10）Lower end be lifting structure, and pointer（12）Maximum lifting amount and dynamometer spring（10）Most
Large deformation amount is identical.
6. a kind of friction force demonstration device according to claim 1, it is characterised in that：The counterweight aggravates platform（18）
Two chain ropes（16）Lower end be lifting structure, and counterweight aggravate platform（18）For triangular structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721456683.7U CN207818030U (en) | 2017-11-05 | 2017-11-05 | A kind of friction force demonstration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721456683.7U CN207818030U (en) | 2017-11-05 | 2017-11-05 | A kind of friction force demonstration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207818030U true CN207818030U (en) | 2018-09-04 |
Family
ID=63334432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721456683.7U Expired - Fee Related CN207818030U (en) | 2017-11-05 | 2017-11-05 | A kind of friction force demonstration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207818030U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2773439C1 (en) * | 2021-05-05 | 2022-06-03 | Федеральное государственное бюджетное учреждение "Арктический и Антарктический научно-исследовательский институт" (ФГБУ "ААНИИ") | Stand for simulating low-frequency horizontal oscillations of ice |
-
2017
- 2017-11-05 CN CN201721456683.7U patent/CN207818030U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2773439C1 (en) * | 2021-05-05 | 2022-06-03 | Федеральное государственное бюджетное учреждение "Арктический и Антарктический научно-исследовательский институт" (ФГБУ "ААНИИ") | Stand for simulating low-frequency horizontal oscillations of ice |
| RU2797928C1 (en) * | 2022-11-07 | 2023-06-13 | Федеральное государственное бюджетное учреждение "Арктический и Антарктический научно-исследовательский институт" (ФГБУ "ААНИИ") | Stand for imitation of low-frequency vertical vibrations of ice |
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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: 20180904 Termination date: 20191105 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |