CN207752674U - A kind of physical friction power automatic demonstrating device - Google Patents
A kind of physical friction power automatic demonstrating device Download PDFInfo
- Publication number
- CN207752674U CN207752674U CN201721850279.8U CN201721850279U CN207752674U CN 207752674 U CN207752674 U CN 207752674U CN 201721850279 U CN201721850279 U CN 201721850279U CN 207752674 U CN207752674 U CN 207752674U
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- CN
- China
- Prior art keywords
- level board
- loading plate
- stepper motor
- sliding block
- riser
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Abstract
The utility model discloses a kind of physical friction power automatic demonstrating devices, it is including level board and on the upper surface of level board rear and with the integrally formed riser of level board, riser front end face left part, which can slide up and down to, is connected with sliding block, stepper motor is installed on level board, the output shaft of stepper motor is threadedly coupled with sliding block, controller is installed on level board, control button is installed on the front end face of controller, loading plate is provided on level board, it is provided with weight above loading plate, weight is connected with drawstring by tensiometer, the one end of drawstring far from tensiometer is fixed around the lateral wall with sliding block after two fixed pulleys on riser successively, loading plate is pressed on by hold-down mechanism on level board；Drawstring is pulled by using stepper motor, so, it enables to stepper motor to be to ensure that the pulling force of drawstring uniformly constant, so as to avoid the numerical value that tensiometer is shown from occurring beating or the phenomenon that there are errors, and then can ensure the accuracy of experimental data.
Description
Technical field
The utility model belongs to apparatus for demonstrating technical field, is related to a kind of physical friction power automatic demonstrating device.
Background technology
It is seen in order to which the physical phenomenon of frictional force is demonstrated to student, teacher of physics can be used to physical friction power and be demonstrated
Device, however current physical friction power demonstration device, in presentation process, teacher can only move to pull for traction by hand
Dynamic drawstring, however teacher manually pull pulling force when drawstring be it is non-uniform, so, the number that tensiometer can be made to show
Value generates bounce or there are errors, to influence experimental data.
Utility model content
To solve the above-mentioned problems, the utility model devises a kind of physical friction power automatic demonstrating device, by using
Stepper motor pulls drawstring, so, enables to stepper motor to be to ensure that the pulling force of drawstring uniformly constant, to
The numerical value that tensiometer is shown can be avoided to occur beating or the phenomenon that there are errors, and then can ensure the accurate of experimental data
Property.
What the purpose of this utility model was realized in：
The physical friction power automatic demonstrating device of the utility model, including level board and on the upper surface of level board rear
And with the integrally formed riser of level board, riser front end face left part, which can slide up and down to, is connected with sliding block, on the front end face of riser
A pair of of sliding rail is installed, sliding block is slidably connected with sliding rail, and the stepping electricity for driving sliding block to slide up and down is equipped on level board
The output shaft of machine, stepper motor is threadedly coupled with sliding block, and the control for controlling stepper motor positive and negative rotation is equipped on level board
Device, stepper motor are electrically connected with the controller, and the control for controlling stepper motor positive and negative rotation is equipped on the front end face of controller
Button is provided with loading plate on level board, is provided with weight above loading plate, weight is connected with drawstring, drawstring by tensiometer
One end far from tensiometer is fixed around the lateral wall with sliding block after two fixed pulleys on riser successively, and loading plate passes through compression
Mechanism is pressed on level board.
The physical friction power automatic demonstrating device of the utility model, wherein hold-down mechanism includes being located on front side of loading plate with after
Several " L " shape supporting racks on the level board of side, push rod is vertically equipped on supporting rack, and the lower thread connection of push rod is useful
In the briquetting for compressing loading plate, the push rod outer cover between briquetting and supporting rack is equipped with for pushing briquetting so that briquetting compression is held
The spring of support plate；Loading plate is pressed on by hold-down mechanism on level board, so, can easily be carried out more to loading plate
It changes, the loading plate of unlike material can be replaced, so as to simulate the shadow of the loading plate of unlike material to the static friction of weight
It rings；In upper pulling-pushing rod, briquetting is released to the pressing force of loading plate, then can remove loading plate from level board, when changing
After the loading plate of upper unlike material, under the action of the spring, briquetting can compress loading plate.
The physical friction power automatic demonstrating device of the utility model, wherein if it is anti-skidding to be provided with arterial highway on the lower face of briquetting
Slot；Pass through the setting of anti-slip tank so that sliding block can play anti-skidding effect between loading plate.
The physical friction power automatic demonstrating device of the utility model, wherein the vertical section of anti-slip tank is inverted " v " shape shape knot
Structure；By setting anti-slip tank to inverted " v " shape shape structure, so, can further increase anti-slip tank and loading plate it
Between frictional force so that the compression to loading plate is better achieved in briquetting.
The utility model pulls drawstring, so, enable to stepper motor to drawstring by using stepper motor
Pulling force be to ensure that it is uniformly constant, so as to avoid the numerical value that tensiometer is shown from occurring beating or the phenomenon that there are errors,
And then it can ensure the accuracy of experimental data.
Description of the drawings
Fig. 1 is the main structure diagram of the utility model；
Fig. 2 is the right side structural representation that loading plate is pressed on by hold-down mechanism on level board；
Fig. 3 is amplified structural schematic diagram at A in Fig. 2.
Specific implementation mode
Specific embodiment of the present invention is described in further detail below in conjunction with the accompanying drawings.
In the description of the present invention, unless otherwise indicated, term "upper", "lower", "left", "right", "front", "rear",
The orientation or state relation of the instructions such as " top ", " bottom " are orientation based on ... shown in the drawings or state relation, merely to just
It is described in description the utility model and simplifying, does not indicate or imply the indicated mechanism or certain party that component must have
Position, with specific azimuth configuration and operation, therefore should not be understood as limiting the present invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " connection "
It shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can be direct phase
It even, can also be indirectly connected through an intermediary.For the ordinary skill in the art, on being understood with concrete condition
State the concrete meaning of term in the present invention.
A kind of physical friction power automatic demonstrating device, including level board 11 and on 11 rear upper surface of level board and with
11 integrally formed riser 12 of level board, 12 front end face left part of riser, which can slide up and down to, is connected with sliding block 2, the front end of riser 12
A pair of of sliding rail 4 is installed, sliding block 2 is slidably connected with sliding rail 4, is equipped on level board 11 and glides on sliding block 2 for driving on face
The output shaft of dynamic stepper motor 5, stepper motor 5 is threadedly coupled with sliding block 2, is equipped on level board 11 for controlling stepping electricity
The controller 6 of 5 positive and negative rotation of machine, stepper motor 5 are electrically connected with controller 6, are equipped on the front end face of controller 6 for controlling step
The control button 61 of 5 positive and negative rotation of stepper motor, loading plate 7 is provided on level board 11, and 7 top of loading plate is provided with weight 8, weight
8 are connected with drawstring 10 by tensiometer 9, and the one end of drawstring 10 far from tensiometer 9 bypasses two fixed pulleys on riser 12 successively
Lateral wall after 121 with sliding block 2 is fixed, and loading plate 7 is pressed on by hold-down mechanism on level board 11；Hold-down mechanism includes being located at
Several " L " shape supporting racks 201 on the level board 11 of the front side of loading plate 7 and rear side are vertically equipped with push rod on supporting rack 201
202, the lower thread of push rod 202 is connected with the briquetting 203 for compressing loading plate 7, between briquetting 203 and supporting rack 201
202 outer cover of push rod is equipped with for pushing briquetting 203 so that briquetting 203 compresses the spring 204 of loading plate 7；Loading plate passes through pressure
Tight mechanism is pressed on level board, so, can easily be replaced to loading plate, can be replaced unlike material
Loading plate, so as to simulate the influence of the loading plate of unlike material to the static friction of weight；In upper pulling-pushing rod, briquetting releases
To the pressing force of loading plate, then loading plate can be removed from level board, after changing the loading plate of unlike material, in bullet
Under the action of spring, briquetting can compress loading plate；If being provided with arterial highway anti-slip tank 205 on the lower face of briquetting 203；By anti-
The setting of sliding slot so that sliding block can play anti-skidding effect between loading plate；The vertical section of anti-slip tank 205 is inverted " V " word
Shape and structure；By setting anti-slip tank to inverted " v " shape shape structure, so, anti-slip tank can be further increased and held
Frictional force between support plate, so that the compression to loading plate is better achieved in briquetting；It should be noted that this practicality
The prior art current when involved controller and stepper motor in novel, as long as that is, controller can be realized to stepper motor
Positive and negative rotation control, which is the prior art, therefore is not repeated herein；And the button on controller is also existing skill
Art, as long as controller can be manipulated so that control the positive and negative rotation of stepper motor, therefore do not repeat herein.
It should be noted that in the embodiment above, as long as reconcilable technical solution can carry out permutation and combination, this
Field technology personnel can be possible to according to the mathematical knowledge limit of permutation and combination, and therefore, the utility model is no longer to arrangement
Technical solution after combination 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
It is not limited to above example, 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 scope of protection of the utility model.
Claims (4)
1. a kind of physical friction power automatic demonstrating device, including level board（11）With positioned at level board（11）It is on the upper surface of rear and
With level board（11）Integrally formed riser（12）, it is characterised in that：The riser（12）Front end face left part can slide up and down to
It is connected with sliding block（2）, the riser（12）Front end face on a pair of of sliding rail is installed（4）, the sliding block（2）With sliding rail（4）It is sliding
Dynamic connection, the level board（11）On be equipped with for driving sliding block（2）The stepper motor slided up and down（5）, the stepping electricity
Machine（5）Output shaft and sliding block（2）It is threadedly coupled, the level board（11）On be equipped with for controlling stepper motor（5）It is positive and negative
The controller turned（6）, the stepper motor（5）With controller（6）Electrical connection, the controller（6）Front end face on be equipped with
For controlling stepper motor（5）The control button of positive and negative rotation（61）, the level board（11）On be provided with loading plate（7）, described
Loading plate（7）Top is provided with weight（8）, the weight（8）Pass through tensiometer（9）It is connected with drawstring（10）, the drawstring
（10）Far from tensiometer（9）One end successively bypass riser（12）On two fixed pulleys（121）Afterwards with sliding block（2）Lateral wall
It is fixed, the loading plate（7）It is pressed on level board by hold-down mechanism（11）On.
2. physical friction power automatic demonstrating device according to claim 1, which is characterized in that the hold-down mechanism includes being located at
Loading plate（7）The level board of front side and rear side（11）On several " L " shape supporting racks（201）, support frame as described above（201）It is upper perpendicular
To being equipped with push rod（202）, the push rod（202）Lower thread be connected with for compressing loading plate（7）Briquetting（203）,
The briquetting（203）With supporting rack（201）Between push rod（202）Outer cover is equipped with for pushing briquetting（203）So that briquetting
（203）Compress loading plate（7）Spring（204）.
3. physical friction power automatic demonstrating device according to claim 2, which is characterized in that the briquetting（203）Lower end
If being provided with arterial highway anti-slip tank on face（205）.
4. physical friction power automatic demonstrating device according to claim 3, which is characterized in that the anti-slip tank（205）It is perpendicular
Section is inverted " v " shape shape structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721850279.8U CN207752674U (en) | 2017-12-27 | 2017-12-27 | A kind of physical friction power automatic demonstrating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721850279.8U CN207752674U (en) | 2017-12-27 | 2017-12-27 | A kind of physical friction power automatic demonstrating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207752674U true CN207752674U (en) | 2018-08-21 |
Family
ID=63150666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721850279.8U Expired - Fee Related CN207752674U (en) | 2017-12-27 | 2017-12-27 | A kind of physical friction power automatic demonstrating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207752674U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108982134A (en) * | 2018-10-15 | 2018-12-11 | 迈特诺（马鞍山）特种电缆有限公司 | A kind of simulated locomotive high/low temperature impact resistance telecontrol equipment |
| CN109036017A (en) * | 2018-09-10 | 2018-12-18 | 任浩田 | A kind of high school student's physics frictional experiment demonstrator |
| CN109377837A (en) * | 2018-11-24 | 2019-02-22 | 田镇宇 | A kind of mechanics comprehensive experiment device |
| CN109473018A (en) * | 2018-12-29 | 2019-03-15 | 路依丹 | A kind of high school physics study apparatus for demonstrating |
-
2017
- 2017-12-27 CN CN201721850279.8U patent/CN207752674U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109036017A (en) * | 2018-09-10 | 2018-12-18 | 任浩田 | A kind of high school student's physics frictional experiment demonstrator |
| CN108982134A (en) * | 2018-10-15 | 2018-12-11 | 迈特诺（马鞍山）特种电缆有限公司 | A kind of simulated locomotive high/low temperature impact resistance telecontrol equipment |
| CN109377837A (en) * | 2018-11-24 | 2019-02-22 | 田镇宇 | A kind of mechanics comprehensive experiment device |
| CN109473018A (en) * | 2018-12-29 | 2019-03-15 | 路依丹 | A kind of high school physics study apparatus for demonstrating |
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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: 20180821 Termination date: 20181227 |
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| CF01 | Termination of patent right due to non-payment of annual fee |