CN206672472U - A kind of physics teaching friction force demonstration machine - Google Patents
A kind of physics teaching friction force demonstration machine Download PDFInfo
- Publication number
- CN206672472U CN206672472U CN201720374518.0U CN201720374518U CN206672472U CN 206672472 U CN206672472 U CN 206672472U CN 201720374518 U CN201720374518 U CN 201720374518U CN 206672472 U CN206672472 U CN 206672472U
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- friction
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- slide
- face
- driven
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Abstract
It the utility model is related to a kind of physics teaching friction force demonstration machine, it includes left and right two stand, wherein there is the second motor in a stand and by the second motor-driven driving pulley, there is driven pulley in another stand, by being driven V belt translation between driving pulley and driven pulley, the friction examination face for being covered with different coefficients of friction is segmented on transmission belt；The slide rail and the drive screw of rotation connection being fixedly connected between two stands above friction examination face, drive screw is driven by the first motor in stand, slide is slidably connected on slide rail, slide is with drive screw worm drive to be slided by screw drive slide along slide rail, weight beam is installed, the hook of weight beam mounts with the test block being placed on friction examination face on the slide.The teaching demonstration of frictional force and friction effects factor can be carried out well by the utility model, and the demonstration machine is mainly mechanical movement manipulation, has experiment accurately, the good advantage of ornamental.
Description
Technical field
It the utility model is related to teaching equipment field, and in particular to a kind of physics teaching friction force demonstration machine.
Background technology
In physics teaching, especially junior middle school physics teaching, due to the various physics knowledges of student's initial contact, for knowing
The understanding of knowledge is more abstract.In the past, many teachers were to use the "Duck-stuffing" type of teaching, it is desirable to which student memorize mechanicallys, and causes student couple
Physical knowledge lacks enough understanding and understanding, and this learns deeper physical knowledge to student's later stage and causes extremely bad influence.
At present, in education sector it is well recognized that this problem, most of teacher also can pay attention to leading in teaching
Cross with reference to related tool to demonstrate physical phenomenon, so that student is better understood when physical knowledge.But lack in existing teaching aid
For the presentation tool in physics on frictional force in mechanics field, therefore, applicant combines experience with students for many years, develop
A kind of teaching demonstration instrument that can be good at showing frictional force and friction effects factor.
Utility model content
The utility model is in view of the above-mentioned problems, spy provides a kind of physics teaching friction force demonstration machine.
The technical solution of the utility model is as follows：
A kind of physics teaching friction force demonstration machine, it includes left and right two stand, wherein there is the second motor in a stand
And by the second motor-driven driving pulley, there is driven pulley in another stand, pass through transmission between driving pulley and driven pulley
V belt translation, on transmission belt segmentation be covered with the friction examination face of different coefficients of friction；It is fixedly connected between two stands positioned at friction examination face
The slide rail of top and the drive screw of rotation connection, drive screw are driven by the first motor in stand, are slidably connected on slide rail
There is slide, slide, to be slided by screw drive slide along slide rail, spring is provided with the slide with drive screw worm drive
Dynamometer, the hook of weight beam mount with the test block being placed on friction examination face.
Preferably, friction examination face includes silks and satins face, rough cloth surface, lint face and rubber grain face.
More preferably, there is the second card nose 20 on transmission belt, the both ends in friction examination face have the second grab for being hung on the second card nose
22, the second grab is connected with friction examination face by elastic connecting strip 21.
Preferably, test block includes test block housing, the bottom surface of the test block housing is frictional plane, and top has protrusion
Roller for rolling friction.
More preferably, the bottom of test block housing has vertical cumulative fixation of the lock chamber for test block；Test block housing both sides
The first grab with the first card nose and rotation connection, realizes that the transverse direction of test block is tired out by the mounting of the first card nose and the first grab
Add connection.
Preferably, weight beam is threadedly connected on slide.
The beneficial effects of the utility model are：By the utility model can carry out well frictional force and friction effects because
The teaching demonstration of element, and the demonstration machine is mainly mechanical movement manipulation, has experiment accurately, the good advantage of ornamental.
Brief description of the drawings
The utility model is further described below in conjunction with the accompanying drawings.
Fig. 1 is sliding friction state diagram of the present utility model；
Fig. 2 is rolling friction state diagram of the present utility model；
Fig. 3 is the state diagram that test block is vertical and laterally cumulative in the utility model；
Fig. 4 is the connection structure diagram of friction examination face and transmission belt in the utility model；
In figure, 1 stand, 2 slide rails, 3 drive screws, 4 slides, 5 weight beams, 6 test blocks, 7 first motors, 8 second electricity
Machine, 9 driving pulleys, 10 driven pulleys, 11 transmission belts, 12 silks and satins faces, 13 rough cloth surfaces, 14 lint faces, 15 rubber grain faces,
16 test block housings, 17 rollers, 18 first card noses, 19 first grabs, 20 second card noses, 21 elastic connecting strips, 22 second grabs, 23
Lock chamber.
Embodiment
The utility model is described in detail below with reference to specific embodiment：
Embodiment 1
As shown in Figure 1,2,3, 4, the embodiment includes left and right two stand 1, wherein have in a stand the second motor 8 and
By the second motor-driven driving pulley 9, there is driven pulley 10 in another stand, pass through transmission between driving pulley and driven pulley
Band 11 is driven, on transmission belt segmentation be covered with the differences such as silks and satins face 12, rough cloth surface 13, lint face 14 and rubber grain face 15 and rub
Wipe the friction examination face of coefficient；The slide rail 2 and the transmission spiral shell of rotation connection being fixedly connected between two stands above friction examination face
Bar 3, drive screw are driven by the first motor 7 in stand, and slide 4, slide and drive screw spiral are slidably connected on slide rail
Transmission is threaded with weight beam 5 to be slided by screw drive slide along slide rail on slide, the hook of weight beam with
The test block 6 being placed on friction examination face mounts.
Test block includes test block housing, and the bottom surface of test block housing is frictional plane for sliding friction, test block housing
Top has the roller of protrusion for rolling friction.
The bottom of test block housing has vertical cumulative fixation of the lock chamber for test block.
Test block housing both sides have the first card nose 18 and the first grab 19 of rotation connection, are blocked by the first card nose and first
The cumulative connection of transverse direction of test block can be achieved in the mounting of hook.
The both ends in the examination face of friction are connected with the second grab 22 by elastic connecting strip 21, and the second grab is with being distributed in transmission
The the second card nose 20 taken mounts.
In the embodiment, transmission belt can be driven by the second motor, the differentiated friction on transmission belt is tried face positioned at experiment
Position；Slide can be driven to move by the first motor, slide pulls test block to be moved on friction examination face by weight beam, bullet
Spring dynamometer can show the size of frictional force.
Test block in the embodiment is just put, and can try the enterprising line slip frictional experiment in face in the friction of different coefficients of friction；Examination
Block is counter to be put, and rolling friction experiment can be carried out on the friction examination face of different coefficients of friction；Test block can vertically be fixed and added up to test
The relation of frictional force and vertical gravity；Ten pieces can also laterally add up connection to test the relation of frictional force and contact area.
Claims (7)
- A kind of 1. physics teaching friction force demonstration machine, it is characterised in that：Include left and right two stand（1）, wherein in a stand There is the second motor（8）And by the second motor-driven driving pulley（9）, have driven pulley in another stand（10）, the driving Pass through transmission belt between belt wheel and driven pulley（11）It is driven, the friction examination for being covered with different coefficients of friction is segmented on the transmission belt Face；The slide rail being fixedly connected between two stands above friction examination face（2）And the drive screw of rotation connection（3）, the biography Dynamic screw rod is by the first motor in stand（7）Drive, slide is slidably connected on the slide rail（4）, the slide is with being driven spiral shell Bar worm drive are provided with weight beam to be slided by screw drive slide along slide rail on the slide（5）, the spring survey The hook of power meter and the test block being placed on friction examination face（6）Mounting.
- 2. the physics teaching friction force demonstration machine according to claim 1, it is characterised in that：The friction examination face includes Silks and satins face（12）, rough cloth surface（13）, lint face（14）, rubber grain face（15）.
- 3. the physics teaching friction force demonstration machine according to claim 1, it is characterised in that：Have second on the transmission belt Card nose（20）, the both ends in the friction examination face have the second grab for being hung on the second card nose（22）, second grab is with rubbing Examination face passes through elastic connecting strip（21）Connection.
- 4. the physics teaching friction force demonstration machine according to claim 1, it is characterised in that：The test block includes test block Housing（16）, the bottom surface of the test block housing is frictional plane, and top has the roller of protrusion（17）For rolling friction.
- 5. the physics teaching friction force demonstration machine according to claim 4, it is characterised in that：The bottom of the test block housing With lock chamber（23）For the vertical cumulative fixation of test block.
- 6. the physics teaching friction force demonstration machine according to claim 4, it is characterised in that：The test block housing of the test block Both sides have the first card nose（18）With the first grab of rotation connection（19）, realized by the mounting of the first card nose and the first grab The cumulative connection of the transverse direction of test block.
- 7. the physics teaching friction force demonstration machine according to claim 1, it is characterised in that：The weight beam screw thread It is connected on slide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720374518.0U CN206672472U (en) | 2017-04-11 | 2017-04-11 | A kind of physics teaching friction force demonstration machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720374518.0U CN206672472U (en) | 2017-04-11 | 2017-04-11 | A kind of physics teaching friction force demonstration machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206672472U true CN206672472U (en) | 2017-11-24 |
Family
ID=60381080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720374518.0U Expired - Fee Related CN206672472U (en) | 2017-04-11 | 2017-04-11 | A kind of physics teaching friction force demonstration machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206672472U (en) |
-
2017
- 2017-04-11 CN CN201720374518.0U patent/CN206672472U/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: 20171124 Termination date: 20180411 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |