CN208256147U - A kind of friction force demonstration device - Google Patents
A kind of friction force demonstration device Download PDFInfo
- Publication number
- CN208256147U CN208256147U CN201721507741.4U CN201721507741U CN208256147U CN 208256147 U CN208256147 U CN 208256147U CN 201721507741 U CN201721507741 U CN 201721507741U CN 208256147 U CN208256147 U CN 208256147U
- Authority
- CN
- China
- Prior art keywords
- glass plate
- plank
- rubber strip
- pedestal
- screw rod
- 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 a kind of friction force demonstration devices, including pedestal, the glass plate slided respectively when tensiometer pulls trolley for trolley is provided on the upper surface of pedestal, plank and rubber strip, glass plate, plank is arranged in parallel with rubber strip and thickness is identical, the both ends of glass plate, the both ends of plank and the both ends of rubber strip pass through locking mechanism and the both ends of pedestal are locked, locking mechanism includes the " [locking rack of " shape, the inner wall of the one of side of locking rack and the upper surface of glass plate, the upper surface of plank and the upper surface of rubber strip are close to, screw rod is threaded on another side of locking rack, the upper end of screw rod, which is rotatably coupled, to offset for the lower end surface with pedestal so that locking rack is by glass plate, plank and rubber strip are pressed on the top on pedestal, the lower end of screw rod is fixed with the turntable for rotating screw rod；The utility model can demonstrate out the phenomenon that influence of the different materials to trolley frictional force, have the advantages that good demonstration effect.
Description
Technical field
The utility model belongs to teaching demonstration device technical field, is related to a kind of friction force demonstration device.
Background technique
In physical teaching course, often use friction force demonstration device, in current friction force demonstration device it is general only
Being provided with the slideway made of a kind of material for trolley sliding so can not demonstrate different materials and rub to trolley
The phenomenon that wiping the influence of power, to have the shortcomings that demonstrating effect is poor.
Utility model content
To solve the above-mentioned problems, the utility model devises a kind of friction force demonstration device, by being arranged on pedestal
For glass plate, plank and the rubber strip of trolley sliding, so, when trolley is respectively on glass plate, plank and rubber strip
After sliding, the phenomenon that influence of the different materials to trolley frictional force can be demonstrated out, has the advantages that good demonstration effect.
Purpose of the utility model is realized as follows:
The friction force demonstration device of the utility model, including pedestal, be provided on the upper surface of pedestal pulled in tensiometer it is small
Glass plate, plank and the rubber strip slided respectively when vehicle for trolley, glass plate, plank and rubber strip are arranged in parallel and thickness phase
Together, the both ends at the both ends of glass plate, the both ends of plank and rubber strip pass through locking mechanism and the both ends of pedestal are locked, locking knot
Structure includes " [upper surface of the locking rack of " shape, the inner wall of the one of side of locking rack and glass plate, the upper surface of plank and rubber
The upper surface of adhesive tape is close to, and is threaded with screw rod on another side of locking rack, the upper end of screw rod has been rotatably coupled
It is offseted for the lower end surface with pedestal so that glass plate, plank and rubber strip are pressed on the top on pedestal, screw rod by locking rack
Lower end be fixed with the turntable for rotating screw rod.
The friction force demonstration device of the utility model, wherein the side that locking rack and glass plate, plank and rubber strip are affixed
Non-slip mat is fitted on inner wall；Pass through the setting of non-slip mat, in locking rack pressed glass plate, plank and rubber strip, Neng Gouqi
To anti-skidding effect, so that locking rack being capable of preferably locking glass plate, plank and rubber strip.
The friction force demonstration device of the utility model, wherein if it is wide along non-slip mat to be provided with arterial highway on the lower end surface of non-slip mat
Spend the anti-skidding raised line of directional spreding；By the setting of anti-skidding raised line, non-slip mat is capable of increasing to glass plate, plank and rubber strip
Pressure, so as to preferably pressed glass plate, plank and rubber strip.
The friction force demonstration device of the utility model, wherein the vertical section of anti-skidding raised line is inverted ladder shape structure；By using
After this structure, anti-skidding raised line is capable of increasing to the pressure of glass plate, plank and rubber strip, so as to preferably pressed glass
Plate, plank and rubber strip.
The utility model on pedestal by being arranged the glass plate, plank and the rubber strip that slide for trolley, so,
After trolley slides on glass plate, plank and rubber strip respectively, influence of the different materials to trolley frictional force can be demonstrated out
The phenomenon that, have the advantages that good demonstration effect, and come locking glass plate, plank and rubber strip by using locking mechanism, has
Lock the high advantage of firmness.
Detailed description of the invention
Fig. 1 is the schematic view of the front view of the utility model；
Fig. 2 is amplified structural schematic diagram at A in Fig. 1；
Fig. 3 is that the utility model removes the overlooking structure diagram after trolley and tensiometer.
Specific embodiment
Specific embodiment of the present invention is described in further detail with reference to the accompanying drawing.
A kind of friction force demonstration device, including pedestal 1 are provided on the upper surface of pedestal 1 when tensiometer 2 pulls trolley 3
Glass plate 4, plank 5 and the rubber strip 6 slided respectively for trolley 3, glass plate 4, plank 5 and rubber strip 6 are arranged in parallel and thickness
Spend identical, the both ends that the both ends at the both ends of glass plate 4, the both ends of plank 5 and rubber strip 6 pass through locking mechanism and pedestal 1 are locked
Tightly, locking mechanism includes " [locking rack 71 of " shape, the inner wall of the one of side of locking rack 71 and upper surface, the wood of glass plate 4
The upper surface of plate 5 and the upper surface of rubber strip 6 are close to, and are threaded with screw rod 72, screw rod on another side of locking rack 71
72 upper end is rotatably coupled for being offseted with the lower end surface of pedestal 1 so that locking rack 71 is by glass plate 4, plank 5 and rubber
Adhesive tape 6 is pressed on the top 721 on pedestal 1, and the lower end of screw rod 72 is fixed with the turntable 722 for rotating screw rod 72；In turntable
After 722 rotations, screw rod 72 can push top 721 to move up and offset so that come directly towards 721 with the lower end surface of pedestal 1, so, lock
Tight frame 71 can pressed glass plate 4, plank 5 and rubber strip 6；The side that locking rack 71 and glass plate 4, plank 5 and rubber strip 6 are affixed
Non-slip mat 8 is fitted on the inner wall on side；Pass through the setting of non-slip mat, in locking rack pressed glass plate, plank and rubber strip, energy
Anti-skidding effect is enough played, so that locking rack being capable of preferably locking glass plate, plank and rubber strip；Under non-slip mat 8
If being provided with the anti-skidding raised line 81 that arterial highway is distributed along 8 width direction of non-slip mat on end face；Pass through the setting of anti-skidding raised line, Neng Gouzeng
Big non-slip mat is to the pressure of glass plate, plank and rubber strip, so as to preferably pressed glass plate, plank and rubber strip；It is anti-
The vertical section of sliding raised line 81 is inverted ladder shape structure；After by using this structure, anti-skidding raised line is capable of increasing to glass plate, wood
The pressure of plate and rubber strip, so as to preferably pressed glass plate, plank and rubber strip；The utility model passes through on pedestal
Glass plate, plank and rubber strip for trolley sliding is set, so, when trolley is respectively in glass plate, plank and rubber
After sliding on item, the phenomenon that influence of the different materials to trolley frictional force can be demonstrated out, have the advantages that good demonstration effect, and
Come locking glass plate, plank and rubber strip by using locking mechanism, has the advantages that locking firmness is high.
It should be noted that in the embodiment above, as long as reconcilable technical solution can carry out permutation and combination, this
Field technical staff can be according to the exhaustive all possibility of mathematical knowledge of permutation and combination, and therefore, the utility model is no longer to arrangement
Technical solution after combination is illustrated one by one, but it is understood that being the technical solution after permutation and combination by the utility model
It is disclosed.
It should be noted that listed above is only a kind of specific embodiment of the utility model.Obviously, the utility model
Above embodiments are not limited to, acceptable there are many deformations.
In short, the institute that those skilled in the art directly can export or associate from content disclosed by the utility model
There is deformation, is considered as the protection scope of the utility model.
Claims (4)
1. a kind of friction force demonstration device, it is characterised in that: including pedestal (1), be provided with and drawing on the upper surface of the pedestal (1)
Power meter (2) pulls glass plate (4), plank (5) and the rubber strip (6) slided respectively when trolley (3) for trolley (3), the glass
Glass plate (4), plank (5) is arranged in parallel with rubber strip (6) and thickness is identical, the both ends of the glass plate (4), plank (5) two
End and the both ends of rubber strip (6) pass through locking mechanism and the both ends of pedestal (1) are locked, and the locking mechanism includes " [" shape
Locking rack (71), inner wall and the upper surface of glass plate (4), the upper end of plank (5) of the one of side of the locking rack (71)
Face and the upper surface of rubber strip (6) are close to, and are threaded with screw rod (72) on another side of the locking rack (71), described
The upper end of screw rod (72) is rotatably coupled for being offseted with the lower end surface of pedestal (1) so that locking rack (71) is by glass plate
(4), plank (5) and rubber strip (6) are pressed on the top (721) on pedestal (1), and the lower end of the screw rod (72), which is fixed with, to be used for
Rotate the turntable (722) of screw rod (72).
2. friction force demonstration device according to claim 1, which is characterized in that the locking rack (71) and glass plate (4), wood
Non-slip mat (8) are fitted on the inner wall for the side that plate (5) and rubber strip (6) are affixed.
3. friction force demonstration device according to claim 2, which is characterized in that be arranged on the lower end surface of the non-slip mat (8)
If the anti-skidding raised line (81) for thering is arterial highway to be distributed along non-slip mat (8) width direction.
4. friction force demonstration device according to claim 3, which is characterized in that the vertical section of the anti-skidding raised line (81) is to fall
Trapezoidal shape structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721507741.4U CN208256147U (en) | 2017-11-14 | 2017-11-14 | A kind of friction force demonstration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721507741.4U CN208256147U (en) | 2017-11-14 | 2017-11-14 | A kind of friction force demonstration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208256147U true CN208256147U (en) | 2018-12-18 |
Family
ID=64619602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721507741.4U Expired - Fee Related CN208256147U (en) | 2017-11-14 | 2017-11-14 | A kind of friction force demonstration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208256147U (en) |
-
2017
- 2017-11-14 CN CN201721507741.4U patent/CN208256147U/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: 20181218 Termination date: 20191114 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |