CN203982637U - A kind of tricycle wheel direction demonstrator - Google Patents
A kind of tricycle wheel direction demonstrator Download PDFInfo
- Publication number
- CN203982637U CN203982637U CN201420410927.8U CN201420410927U CN203982637U CN 203982637 U CN203982637 U CN 203982637U CN 201420410927 U CN201420410927 U CN 201420410927U CN 203982637 U CN203982637 U CN 203982637U
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- tricycle
- splat
- wheel
- plastic cylinder
- utility
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Abstract
The utility model discloses tricycle wheel direction demonstrator, comprise tricycle mechanism and fixed support, in described fixed support, be provided with groove, in described groove, plastic cylinder is installed, on described plastic cylinder, be crossed with splat, described tricycle mechanism is placed on splat, described tricycle mechanism comprises tricycle main body and is arranged on an engaged wheel and two driving wheels in tricycle main body, described engaged wheel is placed on the splat of middle part, described driving wheel is placed on the splat of both sides, the utility model cost is lower, phenomenon is obvious, simple in structure, easy to operate demonstration instrument for teaching is for classroom instruction, on the one hand, this teaching aid has been broken this knowledge content without the auxiliary defect of teaching aid, on the other hand, this teaching aid interest is extremely strong, can transfer the enthusiasm that classmates learn, and helps student image memory, and knowledge is better grasped and understood.
Description
Technical field
The utility model relates to a kind of tricycle wheel direction demonstrator.
Background technology
At present, along with curriculum reform deepens constantly, Physics Course requires further to promote student's scientific literacy from objective.Require student to have the consciousness that physical knowledge is applied to life and production practices, dare to probing into the physical problems relevant with daily life.
Experiment is physical basis.The basic law of phenomenon, grasp things development is directly paid close attention in Physical Experiment as student, finally form the important tool of concept, is also the important component part of physics teaching, is just more and more subject to people's attention.Carry out Physical Experiment, object is relevant theory, method and the technical ability that makes student's learning physics experiment more deeply; Further improve student's experiment attainment, the interest that excites student experimenting to probe into; Strengthen student's creativity consciousness; Cultivate practical, the rigorous conscientious scientism of student; Form the good habit of exchanges and cooperation; The ability of practice of Developing Students '.Therefore select and use appropriate experiment teaching aid, just become key one ring of first-class laboratory.Along with deepening continuously of curriculum reform, instructional mode is also in continuous variation.Some knowledge does not have teaching aid auxiliary, and traditional experiment teaching aid does not catch up with again the needs that teaching material changes, and not innovation and improvement in content, is therefore badly in need of supplementing new instruments used for education and experimental apparatus, and this is the needs of the reform in education, is the needs that develop education.
In Ren Jiaoban regular senior secondary school " physics " 1 teaching material, in the content of " friction force " this joint, the method judging for the direction of friction force is often taking teacher's explanation as main, and the direction of friction force is not directly tested and proved.And after exercise in often there is the exercise of cycle wheel direction judgement.The consequence causing is thus that, for such exercise, student memorize mechanicallys afterwards, there is no vivid memory, not deep enough to the understanding of knowledge, only rests on surface.The direction of at this moment how to show wheel friction force is a difficult point that needs are broken through.
Summary of the invention
The technical problems to be solved in the utility model is to provide one and utilizes Newton's laws of motion, in conjunction with tricycle driving wheel and not overlapping this feature of engaged wheel movement locus etc., design the tricycle wheel direction demonstrator for testing friction force direction that a kind of cost is lower, phenomenon is obvious, simple in structure, easy to operate.
For addressing the above problem, the utility model adopts following technical scheme:
A kind of tricycle wheel direction demonstrator, comprise tricycle mechanism and fixed support, in described fixed support, be provided with groove, in described groove, plastic cylinder is installed, on described plastic cylinder, be crossed with splat, described tricycle mechanism is placed on splat, described tricycle mechanism comprises tricycle main body and is arranged on an engaged wheel and two driving wheels in tricycle main body, described engaged wheel is placed on the splat of middle part, and described driving wheel is placed on the splat of both sides.
As preferred technical scheme: the upper surface of described splat posts waterproof abrasive paper, and lower surface is smooth.
As preferred technical scheme: described plastic cylinder is hollow body, and the length of plastic cylinder is greater than the width of splat.
The beneficial effect of the utility model tricycle wheel direction demonstrator is: in conjunction with tricycle driving wheel and not overlapping this feature of engaged wheel movement locus etc., design a kind of cost is lower, phenomenon is obvious, simple in structure, easy to operate demonstration instrument for teaching for classroom instruction, on the one hand, this teaching aid has been broken this knowledge content without the auxiliary defect of teaching aid; On the other hand, this teaching aid interest is extremely strong, can transfer the enthusiasm that classmates learn, and helps student image memory, and knowledge is better grasped and understood.
Brief description of the drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the front view of the utility model tricycle wheel direction demonstrator.
Fig. 2 is the left view of the utility model tricycle wheel direction demonstrator.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail, thereby so that advantage of the present utility model and feature can be easier to be it will be appreciated by those skilled in the art that, protection domain of the present utility model is made to more explicit defining.
Consult a kind of tricycle wheel direction demonstrator shown in Fig. 1 and Fig. 2, comprise tricycle mechanism and fixed support 6, in described fixed support 6, be provided with groove, plastic cylinder 3 is installed in described groove, on described plastic cylinder 3, be crossed with splat 2, described tricycle mechanism is placed on splat 2, described tricycle mechanism comprises tricycle main body 1 and is arranged on an engaged wheel 5 and two driving wheels 4 in tricycle main body 1, described engaged wheel 5 is placed on the splat 2 of middle part, described driving wheel 4 is placed on the splat 2 of both sides.
Preferred version of the present utility model: the upper surface of described splat 2 posts waterproof abrasive paper, and lower surface is smooth.
Preferred version of the present utility model: described plastic cylinder 3 is hollow body, and the length of plastic cylinder 3 is greater than the width of splat.
Between the smooth lower surface of splat and plastic cylinder, have rolling friction, what lower surface was subject to is force of rolling friction.What between splat roughened upper surface and driving wheel, exist is stiction, and what between engaged wheel, exist is force of rolling friction.The power that splat upper surface is subject to is all large than lower surface, and the direction of the power that the direction of making a concerted effort is subject to upper surface is consistent.Therefore according to Newton second law, the trend of the motion of plank can reflect the direction of the friction force that splat upper surface is subject to indirectly.According to Newton third law, the friction force that the friction force that wheel is subject to and plank are subject to is a pair of acting force and reacting force, its equal and opposite in direction, opposite direction again.Can judge thus the direction of friction force that wheel is subject to contrary with the direction of motion of splat.
The above, be only embodiment of the present utility model, but protection domain of the present utility model is not limited to this, and any variation of expecting without creative work or replacement, within all should being encompassed in protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain that claims were limited.
Claims (3)
1. a tricycle wheel direction demonstrator, it is characterized in that: comprise tricycle mechanism and fixed support, in described fixed support, be provided with groove, in described groove, plastic cylinder is installed, on described plastic cylinder, be crossed with splat, described tricycle mechanism is placed on splat, described tricycle mechanism comprises tricycle main body and is arranged on an engaged wheel and two driving wheels in tricycle main body, described engaged wheel is placed on the splat of middle part, and described driving wheel is placed on the splat of both sides.
2. tricycle wheel direction demonstrator according to claim 1, is characterized in that: the upper surface of described splat posts waterproof abrasive paper, and lower surface is smooth.
3. tricycle wheel direction demonstrator according to claim 1, is characterized in that: described plastic cylinder is hollow body, the length of plastic cylinder is greater than the width of splat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420410927.8U CN203982637U (en) | 2014-07-24 | 2014-07-24 | A kind of tricycle wheel direction demonstrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420410927.8U CN203982637U (en) | 2014-07-24 | 2014-07-24 | A kind of tricycle wheel direction demonstrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203982637U true CN203982637U (en) | 2014-12-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420410927.8U Expired - Fee Related CN203982637U (en) | 2014-07-24 | 2014-07-24 | A kind of tricycle wheel direction demonstrator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203982637U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106652476A (en) * | 2017-02-24 | 2017-05-10 | 成都皆为科技有限公司 | Drive wheel identification device |
| CN106768231A (en) * | 2016-12-06 | 2017-05-31 | 北京万集科技股份有限公司 | Vehicle drive shaft and nonpowered axle compartment system and method |
| CN106846821A (en) * | 2017-02-24 | 2017-06-13 | 成都皆为科技有限公司 | A kind of full model recognition system |
| CN107578652A (en) * | 2017-10-31 | 2018-01-12 | 浙江师范大学 | A kind of novel interactive education and instruction exhibiting device |
-
2014
- 2014-07-24 CN CN201420410927.8U patent/CN203982637U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106768231A (en) * | 2016-12-06 | 2017-05-31 | 北京万集科技股份有限公司 | Vehicle drive shaft and nonpowered axle compartment system and method |
| CN106768231B (en) * | 2016-12-06 | 2019-06-18 | 北京万集科技股份有限公司 | Vehicle drive shaft and nonpowered axle compartment system and method |
| CN106652476A (en) * | 2017-02-24 | 2017-05-10 | 成都皆为科技有限公司 | Drive wheel identification device |
| CN106846821A (en) * | 2017-02-24 | 2017-06-13 | 成都皆为科技有限公司 | A kind of full model recognition system |
| CN106652476B (en) * | 2017-02-24 | 2023-08-15 | 成都皆为科技有限公司 | Driving wheel identification device |
| CN106846821B (en) * | 2017-02-24 | 2023-09-01 | 成都皆为科技有限公司 | Full-vehicle type recognition system |
| CN107578652A (en) * | 2017-10-31 | 2018-01-12 | 浙江师范大学 | A kind of novel interactive education and instruction exhibiting device |
| CN107578652B (en) * | 2017-10-31 | 2023-12-22 | 深圳芝思客文化教育科技有限公司 | Novel interactive education and teaching show device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141203 Termination date: 20150724 |
|
| EXPY | Termination of patent right or utility model |