CN206249717U - A kind of high school physicses momentum conservation demonstrating device - Google Patents
A kind of high school physicses momentum conservation demonstrating device Download PDFInfo
- Publication number
- CN206249717U CN206249717U CN201621204396.2U CN201621204396U CN206249717U CN 206249717 U CN206249717 U CN 206249717U CN 201621204396 U CN201621204396 U CN 201621204396U CN 206249717 U CN206249717 U CN 206249717U
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- CN
- China
- Prior art keywords
- gag lever
- lever post
- sliding block
- high school
- demonstrating device
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Abstract
The utility model discloses a kind of high school physicses momentum conservation demonstrating device, it is related to Physical Experiment apparatus field, including sliding block and air track, as technological improvement of the present utility model：Also include position-limited rack；Described sliding block one end is provided with shell fragment and snap ring；The position-limited rack includes support, gag lever post and connecting rod；The sliding block is placed on air track, and the gag lever post two ends are respectively placed in the snap ring of two sliding blocks.The beneficial effects of the utility model are：Fine rule is instead of using gag lever post, it is to avoid by the fine rule length inaccurate problem of experimental result caused by inaccurate, while avoid burning the potential safety hazard that fine rule brings；Use two gag lever posts of the first gag lever post and the second gag lever post, it is to avoid make sliding block uniform force, it is to avoid the problem that one end tilts；Using air track, the frictional force of sliding block and contact surface is reduced, in sum, it is ensured that the accuracy of law of conservation of momentum experimental result.
Description
Technical field
The utility model is related to Physical Experiment apparatus field, and in particular to a kind of high school physicses momentum conservation demonstrating device.
Background technology
Physical Experiment generally requires the Physical Experiment equipment of specialty, and present teacher of physics is on classroom doing the side tested
Formula allows students more intuitively to be understood physical knowledge and be learnt.The definition of the law of conservation of momentum is not received for a system
External force or suffered external force sum are zero, and the aggregated momentum of this system keeps constant.The law of conservation of momentum is the basis of high school physicses
One of theory, in order to verify the law of conservation of momentum, during experiment, it is common practice to the dollies of quality such as two, and in dolly
Between install a spring, they are tied together with fine rule, fine rule, work of two dollies in the elastic force of spring are cut during experiment
Under, move in the opposite direction, the law of conservation of momentum is verified with this.But this way has certain defect, one is small
There is frictional force between car and laboratory table, influence experiment effect, two is that one end of dolly is easy when being compressed with fine rule limited spring
Tilt, and during bolt fine rule cannot precise control fine rule length, when fine rule is blown, it is necessary to light a fire, also generate disaster hidden-trouble.
Utility model content
To solve the above problems, the utility model provides a kind of high school physicses momentum conservation demonstrating device, it is intended to reduce dynamic
Data error when amount law of conservation is tested, including the friction of wheel and laboratory table when dolly is slided is reduced, when reducing bolt fine rule
Cannot precise control fine rule the data error that causes of length, and avoid the ignition operation in experimentation, reduce experiment
Disaster hidden-trouble.
To achieve the above object, the utility model is adopted the following technical scheme that is：A kind of high school physicses conservation of momentum is drilled
Showing device, including sliding block and air track, as technological improvement of the present utility model：Also include position-limited rack；Described sliding block one end
It is provided with shell fragment and snap ring；The position-limited rack includes support, gag lever post and connecting rod；The sliding block is placed on air track, the limit
Position boom end is separately positioned in the snap ring of two sliding blocks.
Preferably, the gag lever post include the first gag lever post and the second gag lever post, the connecting rod be arranged on two gag lever posts it
Between.
Preferably, the connecting rod is connected with the first gag lever post and the second gag lever post axle respectively.
Preferably, first gag lever post is connected with support shaft；The end of first gag lever post is provided with handle.
Preferably, length of the length of the gag lever post less than shell fragment diastole state between two sliding blocks.
Preferably, the air track is provided with graduation mark.
Preferably, the slider bottom coincide with air track top shape.
The beneficial effects of the utility model are：Fine rule is instead of using gag lever post, it is to avoid by fine rule length inaccurate
The inaccurate problem of caused experimental result, while avoid burning the disaster hidden-trouble that fine rule brings；Using the first gag lever post and
Second gag lever post of gag lever post two, make sliding block bearing up-down force uniform, it is to avoid the problem that one end tilts；Using air track, subtract
Small sliding block and the frictional force of contact surface, in sum, reduce the error easily produced when the law of conservation of momentum is tested, and improve
The accuracy of law of conservation of momentum experimental result.
Brief description of the drawings
Fig. 1 is a kind of high school physicses momentum conservation demonstrating device overall structure diagram；
Fig. 2 is a kind of high school physicses momentum conservation demonstrating device position-limited rack side view.
Mark is followed successively by figure：
1- sliding blocks；11- shell fragments；12- snap rings；2- air tracks；21- graduation marks；3- position-limited racks；31- supports；32- is spacing
Bar；The gag lever posts of 321- first；3211- handles；3212- cross bars；3213- vertical poles；The gag lever posts of 322- second；33- connecting rods.
Specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The all other embodiment for being obtained, belongs to the scope of the utility model protection.
As depicted in figs. 1 and 2, a kind of high school physicses momentum conservation demonstrating device of an embodiment of the present utility model, including
Sliding block 1 and air track 2, also including position-limited rack 3.The one end of sliding block 1 is provided with shell fragment 11 and snap ring 12, and sliding block is equivalent to traditional experiment
In dolly, for intuitively showing sliding distance, sliding block 1 according to requirement of experiment at least provided with two pieces, and each sliding block matter
Amount is equal, and the one end with snap ring 12 and shell fragment 11 is oppositely arranged.Air track 2 is used to replace the wheel of traditional dolly, makes
Sliding block is moved on air track, reduces influence of the friction to experimental result.Position-limited rack 3 includes support 31, gag lever post 32 and connects
Bar 33, position-limited rack 3 replaces the fine rule in traditional experiment, compresses shell fragment 11, and two sliding blocks 1 are fixed.Sliding block 1 is arranged on air cushion
On guide rail 2, the end of gag lever post 32 is respectively placed in the snap ring 12 of two sliding blocks 1.
During experiment, shell fragment is first compressed, respectively hang on snap ring 12 gag lever post 32.Gag lever post 32 is pulled, when making in experiment
During with two sliding blocks 1, two sliding blocks 1 are along the relative motion of air track 2 in the presence of shell fragment, and the distance of the motion of two sliding block 1 is equal.
When three sliding blocks 1 are used in experiment, one end sets two identical sliding blocks 1 wherein, after pulling gag lever post 32, sets one
One end move distance of sliding block 1 is to set two two times of one end move distance of sliding block 1.
As depicted in figs. 1 and 2, a kind of high school physicses momentum conservation demonstrating device of another embodiment of the present utility model, limit
Position bar 32 includes the first gag lever post 321 and the second gag lever post 322, and the length of gag lever post 32 can need to set according to experiment.Connecting rod
33 are located between two gag lever posts 3.321 bar spacing with first and the axle of the second gag lever post 322 are connected connecting rod 33 respectively.First gag lever post
321 are connected with the axle of support 31；The end of the first gag lever post 321 is provided with handle 3211, the more convenient operation limit of setting of handle 3211
The activity of position bar 3.Length of the length of gag lever post 32 less than the diastole state of shell fragment 11 between two sliding blocks 1, it is ensured that gag lever post 32 is hung
When entering snap ring, shell fragment is in impaction state.Air track 2 is provided with graduation mark 21, and graduation mark 21 is used to measure the movement of sliding block 1
Distance.The bottom of sliding block 1 coincide with the top shape of air track 2.
In above-described embodiment, gag lever post 32 is respectively equipped with cross bar 3212 and vertical pole 3213, and the cross bar of two gag lever posts is parallel
In air track 2, connecting rod 33 and support 31 are each perpendicular to the cross bar 3212 of the first gag lever post 321.
The beneficial effects of the utility model are：Fine rule is instead of using gag lever post, it is to avoid by fine rule length inaccurate
The inaccurate problem of caused experimental result, while avoid burning the potential safety hazard that fine rule brings；Using the first gag lever post and
Second gag lever post of gag lever post two, it is to avoid make sliding block uniform force, it is to avoid the problem that one end tilts；Led using air cushion
Rail, reduces the frictional force of sliding block and contact surface, in sum, it is ensured that the accuracy of law of conservation of momentum experimental result.
Embodiment of above is only that preferred embodiment of the present utility model is described, not to the utility model
Scope be defined, on the premise of the utility model design spirit is not departed from, this area ordinary skill technical staff to this
Various modifications and improvement that the technical scheme of utility model is made, all should fall into the guarantor that claims of the present utility model determine
In the range of shield.
Claims (7)
1. a kind of high school physicses momentum conservation demonstrating device, including sliding block（1）And air track（2）, it is characterised in that：Also include
Position-limited rack（3）；The sliding block（1）One end is provided with shell fragment（11）And snap ring（12）；The position-limited rack（3）Including support（31）, limit
Position bar（32）And connecting rod（33）；The sliding block（1）It is arranged on air track（2）On, the gag lever post（32）End is respectively provided with
In two sliding blocks（1）Snap ring（12）It is interior.
2. a kind of high school physicses momentum conservation demonstrating device according to claim 1, it is characterised in that：The gag lever post
（32）Including the first gag lever post（321）With the second gag lever post（322）, the connecting rod（33）It is arranged on two gag lever posts（32）Between.
3. a kind of high school physicses momentum conservation demonstrating device according to claim 2, it is characterised in that：The connecting rod（33）
Respectively with the first gag lever post（321）With the second gag lever post（322）Axle is connected.
4. a kind of high school physicses momentum conservation demonstrating device according to claim 2, it is characterised in that：Described first is spacing
Bar（321）With support（31）Axle is connected；First gag lever post（321）End be provided with handle（3211）.
5. a kind of high school physicses momentum conservation demonstrating device according to claim 1, it is characterised in that：The gag lever post
（32）Length be less than two sliding blocks（1）Between shell fragment（11）The length of diastole state.
6. a kind of high school physicses momentum conservation demonstrating device according to claim 1, it is characterised in that：The air track
（2）It is provided with graduation mark（21）.
7. a kind of high school physicses momentum conservation demonstrating device according to claim 1, it is characterised in that：The sliding block（1）
Bottom and air track（2）Top shape is coincide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621204396.2U CN206249717U (en) | 2016-11-08 | 2016-11-08 | A kind of high school physicses momentum conservation demonstrating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621204396.2U CN206249717U (en) | 2016-11-08 | 2016-11-08 | A kind of high school physicses momentum conservation demonstrating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206249717U true CN206249717U (en) | 2017-06-13 |
Family
ID=58999877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621204396.2U Expired - Fee Related CN206249717U (en) | 2016-11-08 | 2016-11-08 | A kind of high school physicses momentum conservation demonstrating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206249717U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111161600A (en) * | 2020-01-21 | 2020-05-15 | 中北大学 | Experiment demonstration device based on momentum conservation law |
-
2016
- 2016-11-08 CN CN201621204396.2U patent/CN206249717U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111161600A (en) * | 2020-01-21 | 2020-05-15 | 中北大学 | Experiment demonstration device based on momentum conservation law |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170613 Termination date: 20171108 |